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1 | package Imager; | |
2 | ||
3 | use strict; | |
4 | use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS %formats $DEBUG %filters %DSOs $ERRSTR $fontstate %OPCODES $I2P $FORMATGUESS $warn_obsolete); | |
5 | use IO::File; | |
6 | ||
7 | use Imager::Color; | |
8 | use Imager::Font; | |
9 | ||
10 | @EXPORT_OK = qw( | |
11 | init | |
12 | init_log | |
13 | DSO_open | |
14 | DSO_close | |
15 | DSO_funclist | |
16 | DSO_call | |
17 | ||
18 | load_plugin | |
19 | unload_plugin | |
20 | ||
21 | i_list_formats | |
22 | i_has_format | |
23 | ||
24 | i_color_new | |
25 | i_color_set | |
26 | i_color_info | |
27 | ||
28 | i_img_empty | |
29 | i_img_empty_ch | |
30 | i_img_exorcise | |
31 | i_img_destroy | |
32 | ||
33 | i_img_info | |
34 | ||
35 | i_img_setmask | |
36 | i_img_getmask | |
37 | ||
38 | i_line | |
39 | i_line_aa | |
40 | i_box | |
41 | i_box_filled | |
42 | i_arc | |
43 | i_circle_aa | |
44 | ||
45 | i_bezier_multi | |
46 | i_poly_aa | |
47 | i_poly_aa_cfill | |
48 | ||
49 | i_copyto | |
50 | i_rubthru | |
51 | i_scaleaxis | |
52 | i_scale_nn | |
53 | i_haar | |
54 | i_count_colors | |
55 | ||
56 | i_gaussian | |
57 | i_conv | |
58 | ||
59 | i_convert | |
60 | i_map | |
61 | ||
62 | i_img_diff | |
63 | ||
64 | i_init_fonts | |
65 | i_t1_new | |
66 | i_t1_destroy | |
67 | i_t1_set_aa | |
68 | i_t1_cp | |
69 | i_t1_text | |
70 | i_t1_bbox | |
71 | ||
72 | i_tt_set_aa | |
73 | i_tt_cp | |
74 | i_tt_text | |
75 | i_tt_bbox | |
76 | ||
77 | i_readjpeg_wiol | |
78 | i_writejpeg_wiol | |
79 | ||
80 | i_readtiff_wiol | |
81 | i_writetiff_wiol | |
82 | i_writetiff_wiol_faxable | |
83 | ||
84 | i_readpng_wiol | |
85 | i_writepng_wiol | |
86 | ||
87 | i_readgif | |
88 | i_readgif_wiol | |
89 | i_readgif_callback | |
90 | i_writegif | |
91 | i_writegifmc | |
92 | i_writegif_gen | |
93 | i_writegif_callback | |
94 | ||
95 | i_readpnm_wiol | |
96 | i_writeppm_wiol | |
97 | ||
98 | i_readraw_wiol | |
99 | i_writeraw_wiol | |
100 | ||
101 | i_contrast | |
102 | i_hardinvert | |
103 | i_noise | |
104 | i_bumpmap | |
105 | i_postlevels | |
106 | i_mosaic | |
107 | i_watermark | |
108 | ||
109 | malloc_state | |
110 | ||
111 | list_formats | |
112 | ||
113 | i_gifquant | |
114 | ||
115 | newfont | |
116 | newcolor | |
117 | newcolour | |
118 | NC | |
119 | NF | |
120 | NCF | |
121 | ); | |
122 | ||
123 | @EXPORT=qw( | |
124 | init_log | |
125 | i_list_formats | |
126 | i_has_format | |
127 | malloc_state | |
128 | i_color_new | |
129 | ||
130 | i_img_empty | |
131 | i_img_empty_ch | |
132 | ); | |
133 | ||
134 | %EXPORT_TAGS= | |
135 | (handy => [qw( | |
136 | newfont | |
137 | newcolor | |
138 | NF | |
139 | NC | |
140 | NCF | |
141 | )], | |
142 | all => [@EXPORT_OK], | |
143 | default => [qw( | |
144 | load_plugin | |
145 | unload_plugin | |
146 | )]); | |
147 | ||
148 | # registered file readers | |
149 | my %readers; | |
150 | ||
151 | # registered file writers | |
152 | my %writers; | |
153 | ||
154 | # modules we attempted to autoload | |
155 | my %attempted_to_load; | |
156 | ||
157 | # library keys that are image file formats | |
158 | my %file_formats = map { $_ => 1 } qw/tiff pnm gif png jpeg raw bmp tga/; | |
159 | ||
160 | # image pixel combine types | |
161 | my @combine_types = | |
162 | qw/none normal multiply dissolve add subtract diff lighten darken | |
163 | hue saturation value color/; | |
164 | my %combine_types; | |
165 | @combine_types{@combine_types} = 0 .. $#combine_types; | |
166 | $combine_types{mult} = $combine_types{multiply}; | |
167 | $combine_types{'sub'} = $combine_types{subtract}; | |
168 | $combine_types{sat} = $combine_types{saturation}; | |
169 | ||
170 | # this will be used to store global defaults at some point | |
171 | my %defaults; | |
172 | ||
173 | BEGIN { | |
174 | require Exporter; | |
175 | @ISA = qw(Exporter); | |
176 | $VERSION = '0.62'; | |
177 | eval { | |
178 | require XSLoader; | |
179 | XSLoader::load(Imager => $VERSION); | |
180 | 1; | |
181 | } or do { | |
182 | require DynaLoader; | |
183 | push @ISA, 'DynaLoader'; | |
184 | bootstrap Imager $VERSION; | |
185 | } | |
186 | } | |
187 | ||
188 | BEGIN { | |
189 | Imager::Font::__init(); | |
190 | for(i_list_formats()) { $formats{$_}++; } | |
191 | ||
192 | if (!$formats{'t1'} and !$formats{'tt'} | |
193 | && !$formats{'ft2'} && !$formats{'w32'}) { | |
194 | $fontstate='no font support'; | |
195 | } | |
196 | ||
197 | %OPCODES=(Add=>[0],Sub=>[1],Mult=>[2],Div=>[3],Parm=>[4],'sin'=>[5],'cos'=>[6],'x'=>[4,0],'y'=>[4,1]); | |
198 | ||
199 | $DEBUG=0; | |
200 | ||
201 | # the members of the subhashes under %filters are: | |
202 | # callseq - a list of the parameters to the underlying filter in the | |
203 | # order they are passed | |
204 | # callsub - a code ref that takes a named parameter list and calls the | |
205 | # underlying filter | |
206 | # defaults - a hash of default values | |
207 | # names - defines names for value of given parameters so if the names | |
208 | # field is foo=> { bar=>1 }, and the user supplies "bar" as the | |
209 | # foo parameter, the filter will receive 1 for the foo | |
210 | # parameter | |
211 | $filters{contrast}={ | |
212 | callseq => ['image','intensity'], | |
213 | callsub => sub { my %hsh=@_; i_contrast($hsh{image},$hsh{intensity}); } | |
214 | }; | |
215 | ||
216 | $filters{noise} ={ | |
217 | callseq => ['image', 'amount', 'subtype'], | |
218 | defaults => { amount=>3,subtype=>0 }, | |
219 | callsub => sub { my %hsh=@_; i_noise($hsh{image},$hsh{amount},$hsh{subtype}); } | |
220 | }; | |
221 | ||
222 | $filters{hardinvert} ={ | |
223 | callseq => ['image'], | |
224 | defaults => { }, | |
225 | callsub => sub { my %hsh=@_; i_hardinvert($hsh{image}); } | |
226 | }; | |
227 | ||
228 | $filters{autolevels} ={ | |
229 | callseq => ['image','lsat','usat','skew'], | |
230 | defaults => { lsat=>0.1,usat=>0.1,skew=>0.0 }, | |
231 | callsub => sub { my %hsh=@_; i_autolevels($hsh{image},$hsh{lsat},$hsh{usat},$hsh{skew}); } | |
232 | }; | |
233 | ||
234 | $filters{turbnoise} ={ | |
235 | callseq => ['image'], | |
236 | defaults => { xo=>0.0,yo=>0.0,scale=>10.0 }, | |
237 | callsub => sub { my %hsh=@_; i_turbnoise($hsh{image},$hsh{xo},$hsh{yo},$hsh{scale}); } | |
238 | }; | |
239 | ||
240 | $filters{radnoise} ={ | |
241 | callseq => ['image'], | |
242 | defaults => { xo=>100,yo=>100,ascale=>17.0,rscale=>0.02 }, | |
243 | callsub => sub { my %hsh=@_; i_radnoise($hsh{image},$hsh{xo},$hsh{yo},$hsh{rscale},$hsh{ascale}); } | |
244 | }; | |
245 | ||
246 | $filters{conv} ={ | |
247 | callseq => ['image', 'coef'], | |
248 | defaults => { }, | |
249 | callsub => sub { my %hsh=@_; i_conv($hsh{image},$hsh{coef}); } | |
250 | }; | |
251 | ||
252 | $filters{gradgen} = | |
253 | { | |
254 | callseq => ['image', 'xo', 'yo', 'colors', 'dist'], | |
255 | defaults => { dist => 0 }, | |
256 | callsub => | |
257 | sub { | |
258 | my %hsh=@_; | |
259 | my @colors = @{$hsh{colors}}; | |
260 | $_ = _color($_) | |
261 | for @colors; | |
262 | i_gradgen($hsh{image}, $hsh{xo}, $hsh{yo}, \@colors, $hsh{dist}); | |
263 | } | |
264 | }; | |
265 | ||
266 | $filters{nearest_color} = | |
267 | { | |
268 | callseq => ['image', 'xo', 'yo', 'colors', 'dist'], | |
269 | defaults => { }, | |
270 | callsub => | |
271 | sub { | |
272 | my %hsh=@_; | |
273 | # make sure the segments are specified with colors | |
274 | my @colors; | |
275 | for my $color (@{$hsh{colors}}) { | |
276 | my $new_color = _color($color) | |
277 | or die $Imager::ERRSTR."\n"; | |
278 | push @colors, $new_color; | |
279 | } | |
280 | ||
281 | i_nearest_color($hsh{image}, $hsh{xo}, $hsh{yo}, \@colors, | |
282 | $hsh{dist}) | |
283 | or die Imager->_error_as_msg() . "\n"; | |
284 | }, | |
285 | }; | |
286 | $filters{gaussian} = { | |
287 | callseq => [ 'image', 'stddev' ], | |
288 | defaults => { }, | |
289 | callsub => sub { my %hsh = @_; i_gaussian($hsh{image}, $hsh{stddev}); }, | |
290 | }; | |
291 | $filters{mosaic} = | |
292 | { | |
293 | callseq => [ qw(image size) ], | |
294 | defaults => { size => 20 }, | |
295 | callsub => sub { my %hsh = @_; i_mosaic($hsh{image}, $hsh{size}) }, | |
296 | }; | |
297 | $filters{bumpmap} = | |
298 | { | |
299 | callseq => [ qw(image bump elevation lightx lighty st) ], | |
300 | defaults => { elevation=>0, st=> 2 }, | |
301 | callsub => sub { | |
302 | my %hsh = @_; | |
303 | i_bumpmap($hsh{image}, $hsh{bump}{IMG}, $hsh{elevation}, | |
304 | $hsh{lightx}, $hsh{lighty}, $hsh{st}); | |
305 | }, | |
306 | }; | |
307 | $filters{bumpmap_complex} = | |
308 | { | |
309 | callseq => [ qw(image bump channel tx ty Lx Ly Lz cd cs n Ia Il Is) ], | |
310 | defaults => { | |
311 | channel => 0, | |
312 | tx => 0, | |
313 | ty => 0, | |
314 | Lx => 0.2, | |
315 | Ly => 0.4, | |
316 | Lz => -1.0, | |
317 | cd => 1.0, | |
318 | cs => 40, | |
319 | n => 1.3, | |
320 | Ia => Imager::Color->new(rgb=>[0,0,0]), | |
321 | Il => Imager::Color->new(rgb=>[255,255,255]), | |
322 | Is => Imager::Color->new(rgb=>[255,255,255]), | |
323 | }, | |
324 | callsub => sub { | |
325 | my %hsh = @_; | |
326 | i_bumpmap_complex($hsh{image}, $hsh{bump}{IMG}, $hsh{channel}, | |
327 | $hsh{tx}, $hsh{ty}, $hsh{Lx}, $hsh{Ly}, $hsh{Lz}, | |
328 | $hsh{cd}, $hsh{cs}, $hsh{n}, $hsh{Ia}, $hsh{Il}, | |
329 | $hsh{Is}); | |
330 | }, | |
331 | }; | |
332 | $filters{postlevels} = | |
333 | { | |
334 | callseq => [ qw(image levels) ], | |
335 | defaults => { levels => 10 }, | |
336 | callsub => sub { my %hsh = @_; i_postlevels($hsh{image}, $hsh{levels}); }, | |
337 | }; | |
338 | $filters{watermark} = | |
339 | { | |
340 | callseq => [ qw(image wmark tx ty pixdiff) ], | |
341 | defaults => { pixdiff=>10, tx=>0, ty=>0 }, | |
342 | callsub => | |
343 | sub { | |
344 | my %hsh = @_; | |
345 | i_watermark($hsh{image}, $hsh{wmark}{IMG}, $hsh{tx}, $hsh{ty}, | |
346 | $hsh{pixdiff}); | |
347 | }, | |
348 | }; | |
349 | $filters{fountain} = | |
350 | { | |
351 | callseq => [ qw(image xa ya xb yb ftype repeat combine super_sample ssample_param segments) ], | |
352 | names => { | |
353 | ftype => { linear => 0, | |
354 | bilinear => 1, | |
355 | radial => 2, | |
356 | radial_square => 3, | |
357 | revolution => 4, | |
358 | conical => 5 }, | |
359 | repeat => { none => 0, | |
360 | sawtooth => 1, | |
361 | triangle => 2, | |
362 | saw_both => 3, | |
363 | tri_both => 4, | |
364 | }, | |
365 | super_sample => { | |
366 | none => 0, | |
367 | grid => 1, | |
368 | random => 2, | |
369 | circle => 3, | |
370 | }, | |
371 | combine => { | |
372 | none => 0, | |
373 | normal => 1, | |
374 | multiply => 2, mult => 2, | |
375 | dissolve => 3, | |
376 | add => 4, | |
377 | subtract => 5, 'sub' => 5, | |
378 | diff => 6, | |
379 | lighten => 7, | |
380 | darken => 8, | |
381 | hue => 9, | |
382 | sat => 10, | |
383 | value => 11, | |
384 | color => 12, | |
385 | }, | |
386 | }, | |
387 | defaults => { ftype => 0, repeat => 0, combine => 0, | |
388 | super_sample => 0, ssample_param => 4, | |
389 | segments=>[ | |
390 | [ 0, 0.5, 1, | |
391 | Imager::Color->new(0,0,0), | |
392 | Imager::Color->new(255, 255, 255), | |
393 | 0, 0, | |
394 | ], | |
395 | ], | |
396 | }, | |
397 | callsub => | |
398 | sub { | |
399 | my %hsh = @_; | |
400 | ||
401 | # make sure the segments are specified with colors | |
402 | my @segments; | |
403 | for my $segment (@{$hsh{segments}}) { | |
404 | my @new_segment = @$segment; | |
405 | ||
406 | $_ = _color($_) or die $Imager::ERRSTR."\n" for @new_segment[3,4]; | |
407 | push @segments, \@new_segment; | |
408 | } | |
409 | ||
410 | i_fountain($hsh{image}, $hsh{xa}, $hsh{ya}, $hsh{xb}, $hsh{yb}, | |
411 | $hsh{ftype}, $hsh{repeat}, $hsh{combine}, $hsh{super_sample}, | |
412 | $hsh{ssample_param}, \@segments) | |
413 | or die Imager->_error_as_msg() . "\n"; | |
414 | }, | |
415 | }; | |
416 | $filters{unsharpmask} = | |
417 | { | |
418 | callseq => [ qw(image stddev scale) ], | |
419 | defaults => { stddev=>2.0, scale=>1.0 }, | |
420 | callsub => | |
421 | sub { | |
422 | my %hsh = @_; | |
423 | i_unsharp_mask($hsh{image}, $hsh{stddev}, $hsh{scale}); | |
424 | }, | |
425 | }; | |
426 | ||
427 | $FORMATGUESS=\&def_guess_type; | |
428 | ||
429 | $warn_obsolete = 1; | |
430 | } | |
431 | ||
432 | # | |
433 | # Non methods | |
434 | # | |
435 | ||
436 | # initlize Imager | |
437 | # NOTE: this might be moved to an import override later on | |
438 | ||
439 | sub import { | |
440 | my $i = 1; | |
441 | while ($i < @_) { | |
442 | if ($_[$i] eq '-log-stderr') { | |
443 | init_log(undef, 4); | |
444 | splice(@_, $i, 1); | |
445 | } | |
446 | else { | |
447 | ++$i; | |
448 | } | |
449 | } | |
450 | goto &Exporter::import; | |
451 | } | |
452 | ||
453 | sub init_log { | |
454 | i_init_log($_[0],$_[1]); | |
455 | i_log_entry("Imager $VERSION starting\n", 1); | |
456 | } | |
457 | ||
458 | ||
459 | sub init { | |
460 | my %parms=(loglevel=>1,@_); | |
461 | if ($parms{'log'}) { | |
462 | init_log($parms{'log'},$parms{'loglevel'}); | |
463 | } | |
464 | ||
465 | if (exists $parms{'warn_obsolete'}) { | |
466 | $warn_obsolete = $parms{'warn_obsolete'}; | |
467 | } | |
468 | ||
469 | # if ($parms{T1LIB_CONFIG}) { $ENV{T1LIB_CONFIG}=$parms{T1LIB_CONFIG}; } | |
470 | # if ( $ENV{T1LIB_CONFIG} and ( $fontstate eq 'missing conf' )) { | |
471 | # i_init_fonts(); | |
472 | # $fontstate='ok'; | |
473 | # } | |
474 | if (exists $parms{'t1log'}) { | |
475 | i_init_fonts($parms{'t1log'}); | |
476 | } | |
477 | } | |
478 | ||
479 | END { | |
480 | if ($DEBUG) { | |
481 | print "shutdown code\n"; | |
482 | # for(keys %instances) { $instances{$_}->DESTROY(); } | |
483 | malloc_state(); # how do decide if this should be used? -- store something from the import | |
484 | print "Imager exiting\n"; | |
485 | } | |
486 | } | |
487 | ||
488 | # Load a filter plugin | |
489 | ||
490 | sub load_plugin { | |
491 | my ($filename)=@_; | |
492 | my $i; | |
493 | my ($DSO_handle,$str)=DSO_open($filename); | |
494 | if (!defined($DSO_handle)) { $Imager::ERRSTR="Couldn't load plugin '$filename'\n"; return undef; } | |
495 | my %funcs=DSO_funclist($DSO_handle); | |
496 | if ($DEBUG) { print "loading module $filename\n"; $i=0; for(keys %funcs) { printf(" %2d: %s\n",$i++,$_); } } | |
497 | $i=0; | |
498 | for(keys %funcs) { if ($filters{$_}) { $ERRSTR="filter '$_' already exists\n"; DSO_close($DSO_handle); return undef; } } | |
499 | ||
500 | $DSOs{$filename}=[$DSO_handle,\%funcs]; | |
501 | ||
502 | for(keys %funcs) { | |
503 | my $evstr="\$filters{'".$_."'}={".$funcs{$_}.'};'; | |
504 | $DEBUG && print "eval string:\n",$evstr,"\n"; | |
505 | eval $evstr; | |
506 | print $@ if $@; | |
507 | } | |
508 | return 1; | |
509 | } | |
510 | ||
511 | # Unload a plugin | |
512 | ||
513 | sub unload_plugin { | |
514 | my ($filename)=@_; | |
515 | ||
516 | if (!$DSOs{$filename}) { $ERRSTR="plugin '$filename' not loaded."; return undef; } | |
517 | my ($DSO_handle,$funcref)=@{$DSOs{$filename}}; | |
518 | for(keys %{$funcref}) { | |
519 | delete $filters{$_}; | |
520 | $DEBUG && print "unloading: $_\n"; | |
521 | } | |
522 | my $rc=DSO_close($DSO_handle); | |
523 | if (!defined($rc)) { $ERRSTR="unable to unload plugin '$filename'."; return undef; } | |
524 | return 1; | |
525 | } | |
526 | ||
527 | # take the results of i_error() and make a message out of it | |
528 | sub _error_as_msg { | |
529 | return join(": ", map $_->[0], i_errors()); | |
530 | } | |
531 | ||
532 | # this function tries to DWIM for color parameters | |
533 | # color objects are used as is | |
534 | # simple scalars are simply treated as single parameters to Imager::Color->new | |
535 | # hashrefs are treated as named argument lists to Imager::Color->new | |
536 | # arrayrefs are treated as list arguments to Imager::Color->new iff any | |
537 | # parameter is > 1 | |
538 | # other arrayrefs are treated as list arguments to Imager::Color::Float | |
539 | ||
540 | sub _color { | |
541 | my $arg = shift; | |
542 | # perl 5.6.0 seems to do weird things to $arg if we don't make an | |
543 | # explicitly stringified copy | |
544 | # I vaguely remember a bug on this on p5p, but couldn't find it | |
545 | # through bugs.perl.org (I had trouble getting it to find any bugs) | |
546 | my $copy = $arg . ""; | |
547 | my $result; | |
548 | ||
549 | if (ref $arg) { | |
550 | if (UNIVERSAL::isa($arg, "Imager::Color") | |
551 | || UNIVERSAL::isa($arg, "Imager::Color::Float")) { | |
552 | $result = $arg; | |
553 | } | |
554 | else { | |
555 | if ($copy =~ /^HASH\(/) { | |
556 | $result = Imager::Color->new(%$arg); | |
557 | } | |
558 | elsif ($copy =~ /^ARRAY\(/) { | |
559 | $result = Imager::Color->new(@$arg); | |
560 | } | |
561 | else { | |
562 | $Imager::ERRSTR = "Not a color"; | |
563 | } | |
564 | } | |
565 | } | |
566 | else { | |
567 | # assume Imager::Color::new knows how to handle it | |
568 | $result = Imager::Color->new($arg); | |
569 | } | |
570 | ||
571 | return $result; | |
572 | } | |
573 | ||
574 | sub _combine { | |
575 | my ($self, $combine, $default) = @_; | |
576 | ||
577 | if (!defined $combine && ref $self) { | |
578 | $combine = $self->{combine}; | |
579 | } | |
580 | defined $combine or $combine = $defaults{combine}; | |
581 | defined $combine or $combine = $default; | |
582 | ||
583 | if (exists $combine_types{$combine}) { | |
584 | $combine = $combine_types{$combine}; | |
585 | } | |
586 | ||
587 | return $combine; | |
588 | } | |
589 | ||
590 | sub _valid_image { | |
591 | my ($self) = @_; | |
592 | ||
593 | $self->{IMG} and return 1; | |
594 | ||
595 | $self->_set_error('empty input image'); | |
596 | ||
597 | return; | |
598 | } | |
599 | ||
600 | # | |
601 | # Methods to be called on objects. | |
602 | # | |
603 | ||
604 | # Create a new Imager object takes very few parameters. | |
605 | # usually you call this method and then call open from | |
606 | # the resulting object | |
607 | ||
608 | sub new { | |
609 | my $class = shift; | |
610 | my $self ={}; | |
611 | my %hsh=@_; | |
612 | bless $self,$class; | |
613 | $self->{IMG}=undef; # Just to indicate what exists | |
614 | $self->{ERRSTR}=undef; # | |
615 | $self->{DEBUG}=$DEBUG; | |
616 | $self->{DEBUG} && print "Initialized Imager\n"; | |
617 | if (defined $hsh{xsize} && defined $hsh{ysize}) { | |
618 | unless ($self->img_set(%hsh)) { | |
619 | $Imager::ERRSTR = $self->{ERRSTR}; | |
620 | return; | |
621 | } | |
622 | } | |
623 | return $self; | |
624 | } | |
625 | ||
626 | # Copy an entire image with no changes | |
627 | # - if an image has magic the copy of it will not be magical | |
628 | ||
629 | sub copy { | |
630 | my $self = shift; | |
631 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
632 | ||
633 | unless (defined wantarray) { | |
634 | my @caller = caller; | |
635 | warn "copy() called in void context - copy() returns the copied image at $caller[1] line $caller[2]\n"; | |
636 | return; | |
637 | } | |
638 | ||
639 | my $newcopy=Imager->new(); | |
640 | $newcopy->{IMG} = i_copy($self->{IMG}); | |
641 | return $newcopy; | |
642 | } | |
643 | ||
644 | # Paste a region | |
645 | ||
646 | sub paste { | |
647 | my $self = shift; | |
648 | ||
649 | unless ($self->{IMG}) { | |
650 | $self->_set_error('empty input image'); | |
651 | return; | |
652 | } | |
653 | my %input=(left=>0, top=>0, src_minx => 0, src_miny => 0, @_); | |
654 | my $src = $input{img} || $input{src}; | |
655 | unless($src) { | |
656 | $self->_set_error("no source image"); | |
657 | return; | |
658 | } | |
659 | $input{left}=0 if $input{left} <= 0; | |
660 | $input{top}=0 if $input{top} <= 0; | |
661 | ||
662 | my($r,$b)=i_img_info($src->{IMG}); | |
663 | my ($src_left, $src_top) = @input{qw/src_minx src_miny/}; | |
664 | my ($src_right, $src_bottom); | |
665 | if ($input{src_coords}) { | |
666 | ($src_left, $src_top, $src_right, $src_bottom) = @{$input{src_coords}} | |
667 | } | |
668 | else { | |
669 | if (defined $input{src_maxx}) { | |
670 | $src_right = $input{src_maxx}; | |
671 | } | |
672 | elsif (defined $input{width}) { | |
673 | if ($input{width} <= 0) { | |
674 | $self->_set_error("paste: width must me positive"); | |
675 | return; | |
676 | } | |
677 | $src_right = $src_left + $input{width}; | |
678 | } | |
679 | else { | |
680 | $src_right = $r; | |
681 | } | |
682 | if (defined $input{src_maxy}) { | |
683 | $src_bottom = $input{src_maxy}; | |
684 | } | |
685 | elsif (defined $input{height}) { | |
686 | if ($input{height} < 0) { | |
687 | $self->_set_error("paste: height must be positive"); | |
688 | return; | |
689 | } | |
690 | $src_bottom = $src_top + $input{height}; | |
691 | } | |
692 | else { | |
693 | $src_bottom = $b; | |
694 | } | |
695 | } | |
696 | ||
697 | $src_right > $r and $src_right = $r; | |
698 | $src_bottom > $b and $src_bottom = $b; | |
699 | ||
700 | if ($src_right <= $src_left | |
701 | || $src_bottom < $src_top) { | |
702 | $self->_set_error("nothing to paste"); | |
703 | return; | |
704 | } | |
705 | ||
706 | i_copyto($self->{IMG}, $src->{IMG}, | |
707 | $src_left, $src_top, $src_right, $src_bottom, | |
708 | $input{left}, $input{top}); | |
709 | ||
710 | return $self; # What should go here?? | |
711 | } | |
712 | ||
713 | # Crop an image - i.e. return a new image that is smaller | |
714 | ||
715 | sub crop { | |
716 | my $self=shift; | |
717 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
718 | ||
719 | unless (defined wantarray) { | |
720 | my @caller = caller; | |
721 | warn "crop() called in void context - crop() returns the cropped image at $caller[1] line $caller[2]\n"; | |
722 | return; | |
723 | } | |
724 | ||
725 | my %hsh=@_; | |
726 | ||
727 | my ($w, $h, $l, $r, $b, $t) = | |
728 | @hsh{qw(width height left right bottom top)}; | |
729 | ||
730 | # work through the various possibilities | |
731 | if (defined $l) { | |
732 | if (defined $w) { | |
733 | $r = $l + $w; | |
734 | } | |
735 | elsif (!defined $r) { | |
736 | $r = $self->getwidth; | |
737 | } | |
738 | } | |
739 | elsif (defined $r) { | |
740 | if (defined $w) { | |
741 | $l = $r - $w; | |
742 | } | |
743 | else { | |
744 | $l = 0; | |
745 | } | |
746 | } | |
747 | elsif (defined $w) { | |
748 | $l = int(0.5+($self->getwidth()-$w)/2); | |
749 | $r = $l + $w; | |
750 | } | |
751 | else { | |
752 | $l = 0; | |
753 | $r = $self->getwidth; | |
754 | } | |
755 | if (defined $t) { | |
756 | if (defined $h) { | |
757 | $b = $t + $h; | |
758 | } | |
759 | elsif (!defined $b) { | |
760 | $b = $self->getheight; | |
761 | } | |
762 | } | |
763 | elsif (defined $b) { | |
764 | if (defined $h) { | |
765 | $t = $b - $h; | |
766 | } | |
767 | else { | |
768 | $t = 0; | |
769 | } | |
770 | } | |
771 | elsif (defined $h) { | |
772 | $t=int(0.5+($self->getheight()-$h)/2); | |
773 | $b=$t+$h; | |
774 | } | |
775 | else { | |
776 | $t = 0; | |
777 | $b = $self->getheight; | |
778 | } | |
779 | ||
780 | ($l,$r)=($r,$l) if $l>$r; | |
781 | ($t,$b)=($b,$t) if $t>$b; | |
782 | ||
783 | $l < 0 and $l = 0; | |
784 | $r > $self->getwidth and $r = $self->getwidth; | |
785 | $t < 0 and $t = 0; | |
786 | $b > $self->getheight and $b = $self->getheight; | |
787 | ||
788 | if ($l == $r || $t == $b) { | |
789 | $self->_set_error("resulting image would have no content"); | |
790 | return; | |
791 | } | |
792 | if( $r < $l or $b < $t ) { | |
793 | $self->_set_error("attempting to crop outside of the image"); | |
794 | return; | |
795 | } | |
796 | my $dst = $self->_sametype(xsize=>$r-$l, ysize=>$b-$t); | |
797 | ||
798 | i_copyto($dst->{IMG},$self->{IMG},$l,$t,$r,$b,0,0); | |
799 | return $dst; | |
800 | } | |
801 | ||
802 | sub _sametype { | |
803 | my ($self, %opts) = @_; | |
804 | ||
805 | $self->{IMG} or return $self->_set_error("Not a valid image"); | |
806 | ||
807 | my $x = $opts{xsize} || $self->getwidth; | |
808 | my $y = $opts{ysize} || $self->getheight; | |
809 | my $channels = $opts{channels} || $self->getchannels; | |
810 | ||
811 | my $out = Imager->new; | |
812 | if ($channels == $self->getchannels) { | |
813 | $out->{IMG} = i_sametype($self->{IMG}, $x, $y); | |
814 | } | |
815 | else { | |
816 | $out->{IMG} = i_sametype_chans($self->{IMG}, $x, $y, $channels); | |
817 | } | |
818 | unless ($out->{IMG}) { | |
819 | $self->{ERRSTR} = $self->_error_as_msg; | |
820 | return; | |
821 | } | |
822 | ||
823 | return $out; | |
824 | } | |
825 | ||
826 | # Sets an image to a certain size and channel number | |
827 | # if there was previously data in the image it is discarded | |
828 | ||
829 | sub img_set { | |
830 | my $self=shift; | |
831 | ||
832 | my %hsh=(xsize=>100, ysize=>100, channels=>3, bits=>8, type=>'direct', @_); | |
833 | ||
834 | if (defined($self->{IMG})) { | |
835 | # let IIM_DESTROY destroy it, it's possible this image is | |
836 | # referenced from a virtual image (like masked) | |
837 | #i_img_destroy($self->{IMG}); | |
838 | undef($self->{IMG}); | |
839 | } | |
840 | ||
841 | if ($hsh{type} eq 'paletted' || $hsh{type} eq 'pseudo') { | |
842 | $self->{IMG} = i_img_pal_new($hsh{xsize}, $hsh{ysize}, $hsh{channels}, | |
843 | $hsh{maxcolors} || 256); | |
844 | } | |
845 | elsif ($hsh{bits} eq 'double') { | |
846 | $self->{IMG} = i_img_double_new($hsh{xsize}, $hsh{ysize}, $hsh{channels}); | |
847 | } | |
848 | elsif ($hsh{bits} == 16) { | |
849 | $self->{IMG} = i_img_16_new($hsh{xsize}, $hsh{ysize}, $hsh{channels}); | |
850 | } | |
851 | else { | |
852 | $self->{IMG}=Imager::ImgRaw::new($hsh{'xsize'}, $hsh{'ysize'}, | |
853 | $hsh{'channels'}); | |
854 | } | |
855 | ||
856 | unless ($self->{IMG}) { | |
857 | $self->{ERRSTR} = Imager->_error_as_msg(); | |
858 | return; | |
859 | } | |
860 | ||
861 | $self; | |
862 | } | |
863 | ||
864 | # created a masked version of the current image | |
865 | sub masked { | |
866 | my $self = shift; | |
867 | ||
868 | $self or return undef; | |
869 | my %opts = (left => 0, | |
870 | top => 0, | |
871 | right => $self->getwidth, | |
872 | bottom => $self->getheight, | |
873 | @_); | |
874 | my $mask = $opts{mask} ? $opts{mask}{IMG} : undef; | |
875 | ||
876 | my $result = Imager->new; | |
877 | $result->{IMG} = i_img_masked_new($self->{IMG}, $mask, $opts{left}, | |
878 | $opts{top}, $opts{right} - $opts{left}, | |
879 | $opts{bottom} - $opts{top}); | |
880 | # keep references to the mask and base images so they don't | |
881 | # disappear on us | |
882 | $result->{DEPENDS} = [ $self->{IMG}, $mask ]; | |
883 | ||
884 | $result; | |
885 | } | |
886 | ||
887 | # convert an RGB image into a paletted image | |
888 | sub to_paletted { | |
889 | my $self = shift; | |
890 | my $opts; | |
891 | if (@_ != 1 && !ref $_[0]) { | |
892 | $opts = { @_ }; | |
893 | } | |
894 | else { | |
895 | $opts = shift; | |
896 | } | |
897 | ||
898 | unless (defined wantarray) { | |
899 | my @caller = caller; | |
900 | warn "to_paletted() called in void context - to_paletted() returns the converted image at $caller[1] line $caller[2]\n"; | |
901 | return; | |
902 | } | |
903 | ||
904 | my $result = Imager->new; | |
905 | $result->{IMG} = i_img_to_pal($self->{IMG}, $opts); | |
906 | ||
907 | #print "Type ", i_img_type($result->{IMG}), "\n"; | |
908 | ||
909 | if ($result->{IMG}) { | |
910 | return $result; | |
911 | } | |
912 | else { | |
913 | $self->{ERRSTR} = $self->_error_as_msg; | |
914 | return; | |
915 | } | |
916 | } | |
917 | ||
918 | # convert a paletted (or any image) to an 8-bit/channel RGB images | |
919 | sub to_rgb8 { | |
920 | my $self = shift; | |
921 | my $result; | |
922 | ||
923 | unless (defined wantarray) { | |
924 | my @caller = caller; | |
925 | warn "to_rgb8() called in void context - to_rgb8() returns the converted image at $caller[1] line $caller[2]\n"; | |
926 | return; | |
927 | } | |
928 | ||
929 | if ($self->{IMG}) { | |
930 | $result = Imager->new; | |
931 | $result->{IMG} = i_img_to_rgb($self->{IMG}) | |
932 | or undef $result; | |
933 | } | |
934 | ||
935 | return $result; | |
936 | } | |
937 | ||
938 | # convert a paletted (or any image) to an 8-bit/channel RGB images | |
939 | sub to_rgb16 { | |
940 | my $self = shift; | |
941 | my $result; | |
942 | ||
943 | unless (defined wantarray) { | |
944 | my @caller = caller; | |
945 | warn "to_rgb16() called in void context - to_rgb8() returns the converted image at $caller[1] line $caller[2]\n"; | |
946 | return; | |
947 | } | |
948 | ||
949 | if ($self->{IMG}) { | |
950 | $result = Imager->new; | |
951 | $result->{IMG} = i_img_to_rgb16($self->{IMG}) | |
952 | or undef $result; | |
953 | } | |
954 | ||
955 | return $result; | |
956 | } | |
957 | ||
958 | sub addcolors { | |
959 | my $self = shift; | |
960 | my %opts = (colors=>[], @_); | |
961 | ||
962 | unless ($self->{IMG}) { | |
963 | $self->_set_error("empty input image"); | |
964 | return; | |
965 | } | |
966 | ||
967 | my @colors = @{$opts{colors}} | |
968 | or return undef; | |
969 | ||
970 | for my $color (@colors) { | |
971 | $color = _color($color); | |
972 | unless ($color) { | |
973 | $self->_set_error($Imager::ERRSTR); | |
974 | return; | |
975 | } | |
976 | } | |
977 | ||
978 | return i_addcolors($self->{IMG}, @colors); | |
979 | } | |
980 | ||
981 | sub setcolors { | |
982 | my $self = shift; | |
983 | my %opts = (start=>0, colors=>[], @_); | |
984 | ||
985 | unless ($self->{IMG}) { | |
986 | $self->_set_error("empty input image"); | |
987 | return; | |
988 | } | |
989 | ||
990 | my @colors = @{$opts{colors}} | |
991 | or return undef; | |
992 | ||
993 | for my $color (@colors) { | |
994 | $color = _color($color); | |
995 | unless ($color) { | |
996 | $self->_set_error($Imager::ERRSTR); | |
997 | return; | |
998 | } | |
999 | } | |
1000 | ||
1001 | return i_setcolors($self->{IMG}, $opts{start}, @colors); | |
1002 | } | |
1003 | ||
1004 | sub getcolors { | |
1005 | my $self = shift; | |
1006 | my %opts = @_; | |
1007 | if (!exists $opts{start} && !exists $opts{count}) { | |
1008 | # get them all | |
1009 | $opts{start} = 0; | |
1010 | $opts{count} = $self->colorcount; | |
1011 | } | |
1012 | elsif (!exists $opts{count}) { | |
1013 | $opts{count} = 1; | |
1014 | } | |
1015 | elsif (!exists $opts{start}) { | |
1016 | $opts{start} = 0; | |
1017 | } | |
1018 | ||
1019 | $self->{IMG} and | |
1020 | return i_getcolors($self->{IMG}, $opts{start}, $opts{count}); | |
1021 | } | |
1022 | ||
1023 | sub colorcount { | |
1024 | i_colorcount($_[0]{IMG}); | |
1025 | } | |
1026 | ||
1027 | sub maxcolors { | |
1028 | i_maxcolors($_[0]{IMG}); | |
1029 | } | |
1030 | ||
1031 | sub findcolor { | |
1032 | my $self = shift; | |
1033 | my %opts = @_; | |
1034 | $opts{color} or return undef; | |
1035 | ||
1036 | $self->{IMG} and i_findcolor($self->{IMG}, $opts{color}); | |
1037 | } | |
1038 | ||
1039 | sub bits { | |
1040 | my $self = shift; | |
1041 | my $bits = $self->{IMG} && i_img_bits($self->{IMG}); | |
1042 | if ($bits && $bits == length(pack("d", 1)) * 8) { | |
1043 | $bits = 'double'; | |
1044 | } | |
1045 | $bits; | |
1046 | } | |
1047 | ||
1048 | sub type { | |
1049 | my $self = shift; | |
1050 | if ($self->{IMG}) { | |
1051 | return i_img_type($self->{IMG}) ? "paletted" : "direct"; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | sub virtual { | |
1056 | my $self = shift; | |
1057 | $self->{IMG} and i_img_virtual($self->{IMG}); | |
1058 | } | |
1059 | ||
1060 | sub is_bilevel { | |
1061 | my ($self) = @_; | |
1062 | ||
1063 | $self->{IMG} or return; | |
1064 | ||
1065 | return i_img_is_monochrome($self->{IMG}); | |
1066 | } | |
1067 | ||
1068 | sub tags { | |
1069 | my ($self, %opts) = @_; | |
1070 | ||
1071 | $self->{IMG} or return; | |
1072 | ||
1073 | if (defined $opts{name}) { | |
1074 | my @result; | |
1075 | my $start = 0; | |
1076 | my $found; | |
1077 | while (defined($found = i_tags_find($self->{IMG}, $opts{name}, $start))) { | |
1078 | push @result, (i_tags_get($self->{IMG}, $found))[1]; | |
1079 | $start = $found+1; | |
1080 | } | |
1081 | return wantarray ? @result : $result[0]; | |
1082 | } | |
1083 | elsif (defined $opts{code}) { | |
1084 | my @result; | |
1085 | my $start = 0; | |
1086 | my $found; | |
1087 | while (defined($found = i_tags_findn($self->{IMG}, $opts{code}, $start))) { | |
1088 | push @result, (i_tags_get($self->{IMG}, $found))[1]; | |
1089 | $start = $found+1; | |
1090 | } | |
1091 | return @result; | |
1092 | } | |
1093 | else { | |
1094 | if (wantarray) { | |
1095 | return map { [ i_tags_get($self->{IMG}, $_) ] } 0.. i_tags_count($self->{IMG})-1; | |
1096 | } | |
1097 | else { | |
1098 | return i_tags_count($self->{IMG}); | |
1099 | } | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | sub addtag { | |
1104 | my $self = shift; | |
1105 | my %opts = @_; | |
1106 | ||
1107 | return -1 unless $self->{IMG}; | |
1108 | if ($opts{name}) { | |
1109 | if (defined $opts{value}) { | |
1110 | if ($opts{value} =~ /^\d+$/) { | |
1111 | # add as a number | |
1112 | return i_tags_addn($self->{IMG}, $opts{name}, 0, $opts{value}); | |
1113 | } | |
1114 | else { | |
1115 | return i_tags_add($self->{IMG}, $opts{name}, 0, $opts{value}, 0); | |
1116 | } | |
1117 | } | |
1118 | elsif (defined $opts{data}) { | |
1119 | # force addition as a string | |
1120 | return i_tags_add($self->{IMG}, $opts{name}, 0, $opts{data}, 0); | |
1121 | } | |
1122 | else { | |
1123 | $self->{ERRSTR} = "No value supplied"; | |
1124 | return undef; | |
1125 | } | |
1126 | } | |
1127 | elsif ($opts{code}) { | |
1128 | if (defined $opts{value}) { | |
1129 | if ($opts{value} =~ /^\d+$/) { | |
1130 | # add as a number | |
1131 | return i_tags_addn($self->{IMG}, $opts{code}, 0, $opts{value}); | |
1132 | } | |
1133 | else { | |
1134 | return i_tags_add($self->{IMG}, $opts{code}, 0, $opts{value}, 0); | |
1135 | } | |
1136 | } | |
1137 | elsif (defined $opts{data}) { | |
1138 | # force addition as a string | |
1139 | return i_tags_add($self->{IMG}, $opts{code}, 0, $opts{data}, 0); | |
1140 | } | |
1141 | else { | |
1142 | $self->{ERRSTR} = "No value supplied"; | |
1143 | return undef; | |
1144 | } | |
1145 | } | |
1146 | else { | |
1147 | return undef; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | sub deltag { | |
1152 | my $self = shift; | |
1153 | my %opts = @_; | |
1154 | ||
1155 | return 0 unless $self->{IMG}; | |
1156 | ||
1157 | if (defined $opts{'index'}) { | |
1158 | return i_tags_delete($self->{IMG}, $opts{'index'}); | |
1159 | } | |
1160 | elsif (defined $opts{name}) { | |
1161 | return i_tags_delbyname($self->{IMG}, $opts{name}); | |
1162 | } | |
1163 | elsif (defined $opts{code}) { | |
1164 | return i_tags_delbycode($self->{IMG}, $opts{code}); | |
1165 | } | |
1166 | else { | |
1167 | $self->{ERRSTR} = "Need to supply index, name, or code parameter"; | |
1168 | return 0; | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | sub settag { | |
1173 | my ($self, %opts) = @_; | |
1174 | ||
1175 | if ($opts{name}) { | |
1176 | $self->deltag(name=>$opts{name}); | |
1177 | return $self->addtag(name=>$opts{name}, value=>$opts{value}); | |
1178 | } | |
1179 | elsif (defined $opts{code}) { | |
1180 | $self->deltag(code=>$opts{code}); | |
1181 | return $self->addtag(code=>$opts{code}, value=>$opts{value}); | |
1182 | } | |
1183 | else { | |
1184 | return undef; | |
1185 | } | |
1186 | } | |
1187 | ||
1188 | ||
1189 | sub _get_reader_io { | |
1190 | my ($self, $input) = @_; | |
1191 | ||
1192 | if ($input->{io}) { | |
1193 | return $input->{io}, undef; | |
1194 | } | |
1195 | elsif ($input->{fd}) { | |
1196 | return io_new_fd($input->{fd}); | |
1197 | } | |
1198 | elsif ($input->{fh}) { | |
1199 | my $fd = fileno($input->{fh}); | |
1200 | unless ($fd) { | |
1201 | $self->_set_error("Handle in fh option not opened"); | |
1202 | return; | |
1203 | } | |
1204 | return io_new_fd($fd); | |
1205 | } | |
1206 | elsif ($input->{file}) { | |
1207 | my $file = IO::File->new($input->{file}, "r"); | |
1208 | unless ($file) { | |
1209 | $self->_set_error("Could not open $input->{file}: $!"); | |
1210 | return; | |
1211 | } | |
1212 | binmode $file; | |
1213 | return (io_new_fd(fileno($file)), $file); | |
1214 | } | |
1215 | elsif ($input->{data}) { | |
1216 | return io_new_buffer($input->{data}); | |
1217 | } | |
1218 | elsif ($input->{callback} || $input->{readcb}) { | |
1219 | if (!$input->{seekcb}) { | |
1220 | $self->_set_error("Need a seekcb parameter"); | |
1221 | } | |
1222 | if ($input->{maxbuffer}) { | |
1223 | return io_new_cb($input->{writecb}, | |
1224 | $input->{callback} || $input->{readcb}, | |
1225 | $input->{seekcb}, $input->{closecb}, | |
1226 | $input->{maxbuffer}); | |
1227 | } | |
1228 | else { | |
1229 | return io_new_cb($input->{writecb}, | |
1230 | $input->{callback} || $input->{readcb}, | |
1231 | $input->{seekcb}, $input->{closecb}); | |
1232 | } | |
1233 | } | |
1234 | else { | |
1235 | $self->_set_error("file/fd/fh/data/callback parameter missing"); | |
1236 | return; | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | sub _get_writer_io { | |
1241 | my ($self, $input, $type) = @_; | |
1242 | ||
1243 | if ($input->{io}) { | |
1244 | return $input->{io}; | |
1245 | } | |
1246 | elsif ($input->{fd}) { | |
1247 | return io_new_fd($input->{fd}); | |
1248 | } | |
1249 | elsif ($input->{fh}) { | |
1250 | my $fd = fileno($input->{fh}); | |
1251 | unless ($fd) { | |
1252 | $self->_set_error("Handle in fh option not opened"); | |
1253 | return; | |
1254 | } | |
1255 | # flush it | |
1256 | my $oldfh = select($input->{fh}); | |
1257 | # flush anything that's buffered, and make sure anything else is flushed | |
1258 | $| = 1; | |
1259 | select($oldfh); | |
1260 | return io_new_fd($fd); | |
1261 | } | |
1262 | elsif ($input->{file}) { | |
1263 | my $fh = new IO::File($input->{file},"w+"); | |
1264 | unless ($fh) { | |
1265 | $self->_set_error("Could not open file $input->{file}: $!"); | |
1266 | return; | |
1267 | } | |
1268 | binmode($fh) or die; | |
1269 | return (io_new_fd(fileno($fh)), $fh); | |
1270 | } | |
1271 | elsif ($input->{data}) { | |
1272 | return io_new_bufchain(); | |
1273 | } | |
1274 | elsif ($input->{callback} || $input->{writecb}) { | |
1275 | if ($input->{maxbuffer}) { | |
1276 | return io_new_cb($input->{callback} || $input->{writecb}, | |
1277 | $input->{readcb}, | |
1278 | $input->{seekcb}, $input->{closecb}, | |
1279 | $input->{maxbuffer}); | |
1280 | } | |
1281 | else { | |
1282 | return io_new_cb($input->{callback} || $input->{writecb}, | |
1283 | $input->{readcb}, | |
1284 | $input->{seekcb}, $input->{closecb}); | |
1285 | } | |
1286 | } | |
1287 | else { | |
1288 | $self->_set_error("file/fd/fh/data/callback parameter missing"); | |
1289 | return; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | # Read an image from file | |
1294 | ||
1295 | sub read { | |
1296 | my $self = shift; | |
1297 | my %input=@_; | |
1298 | ||
1299 | if (defined($self->{IMG})) { | |
1300 | # let IIM_DESTROY do the destruction, since the image may be | |
1301 | # referenced from elsewhere | |
1302 | #i_img_destroy($self->{IMG}); | |
1303 | undef($self->{IMG}); | |
1304 | } | |
1305 | ||
1306 | my ($IO, $fh) = $self->_get_reader_io(\%input) or return; | |
1307 | ||
1308 | unless ($input{'type'}) { | |
1309 | $input{'type'} = i_test_format_probe($IO, -1); | |
1310 | } | |
1311 | ||
1312 | unless ($input{'type'}) { | |
1313 | $self->_set_error('type parameter missing and not possible to guess from extension'); | |
1314 | return undef; | |
1315 | } | |
1316 | ||
1317 | _reader_autoload($input{type}); | |
1318 | ||
1319 | if ($readers{$input{type}} && $readers{$input{type}}{single}) { | |
1320 | return $readers{$input{type}}{single}->($self, $IO, %input); | |
1321 | } | |
1322 | ||
1323 | unless ($formats{$input{'type'}}) { | |
1324 | my $read_types = join ', ', sort Imager->read_types(); | |
1325 | $self->_set_error("format '$input{'type'}' not supported - formats $read_types available for reading"); | |
1326 | return; | |
1327 | } | |
1328 | ||
1329 | # Setup data source | |
1330 | if ( $input{'type'} eq 'jpeg' ) { | |
1331 | ($self->{IMG},$self->{IPTCRAW}) = i_readjpeg_wiol( $IO ); | |
1332 | if ( !defined($self->{IMG}) ) { | |
1333 | $self->{ERRSTR}=$self->_error_as_msg(); return undef; | |
1334 | } | |
1335 | $self->{DEBUG} && print "loading a jpeg file\n"; | |
1336 | return $self; | |
1337 | } | |
1338 | ||
1339 | my $allow_incomplete = $input{allow_incomplete}; | |
1340 | defined $allow_incomplete or $allow_incomplete = 0; | |
1341 | ||
1342 | if ( $input{'type'} eq 'tiff' ) { | |
1343 | my $page = $input{'page'}; | |
1344 | defined $page or $page = 0; | |
1345 | $self->{IMG}=i_readtiff_wiol( $IO, $allow_incomplete, $page ); | |
1346 | if ( !defined($self->{IMG}) ) { | |
1347 | $self->{ERRSTR}=$self->_error_as_msg(); return undef; | |
1348 | } | |
1349 | $self->{DEBUG} && print "loading a tiff file\n"; | |
1350 | return $self; | |
1351 | } | |
1352 | ||
1353 | if ( $input{'type'} eq 'pnm' ) { | |
1354 | $self->{IMG}=i_readpnm_wiol( $IO, $allow_incomplete ); | |
1355 | if ( !defined($self->{IMG}) ) { | |
1356 | $self->{ERRSTR}='unable to read pnm image: '._error_as_msg(); | |
1357 | return undef; | |
1358 | } | |
1359 | $self->{DEBUG} && print "loading a pnm file\n"; | |
1360 | return $self; | |
1361 | } | |
1362 | ||
1363 | if ( $input{'type'} eq 'png' ) { | |
1364 | $self->{IMG}=i_readpng_wiol( $IO, -1 ); # Fixme, check if that length parameter is ever needed | |
1365 | if ( !defined($self->{IMG}) ) { | |
1366 | $self->{ERRSTR} = $self->_error_as_msg(); | |
1367 | return undef; | |
1368 | } | |
1369 | $self->{DEBUG} && print "loading a png file\n"; | |
1370 | } | |
1371 | ||
1372 | if ( $input{'type'} eq 'bmp' ) { | |
1373 | $self->{IMG}=i_readbmp_wiol( $IO, $allow_incomplete ); | |
1374 | if ( !defined($self->{IMG}) ) { | |
1375 | $self->{ERRSTR}=$self->_error_as_msg(); | |
1376 | return undef; | |
1377 | } | |
1378 | $self->{DEBUG} && print "loading a bmp file\n"; | |
1379 | } | |
1380 | ||
1381 | if ( $input{'type'} eq 'gif' ) { | |
1382 | if ($input{colors} && !ref($input{colors})) { | |
1383 | # must be a reference to a scalar that accepts the colour map | |
1384 | $self->{ERRSTR} = "option 'colors' must be a scalar reference"; | |
1385 | return undef; | |
1386 | } | |
1387 | if ($input{'gif_consolidate'}) { | |
1388 | if ($input{colors}) { | |
1389 | my $colors; | |
1390 | ($self->{IMG}, $colors) =i_readgif_wiol( $IO ); | |
1391 | if ($colors) { | |
1392 | ${ $input{colors} } = [ map { NC(@$_) } @$colors ]; | |
1393 | } | |
1394 | } | |
1395 | else { | |
1396 | $self->{IMG} =i_readgif_wiol( $IO ); | |
1397 | } | |
1398 | } | |
1399 | else { | |
1400 | my $page = $input{'page'}; | |
1401 | defined $page or $page = 0; | |
1402 | $self->{IMG} = i_readgif_single_wiol( $IO, $page ); | |
1403 | if ($self->{IMG} && $input{colors}) { | |
1404 | ${ $input{colors} } = | |
1405 | [ i_getcolors($self->{IMG}, 0, i_colorcount($self->{IMG})) ]; | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | if ( !defined($self->{IMG}) ) { | |
1410 | $self->{ERRSTR}=$self->_error_as_msg(); | |
1411 | return undef; | |
1412 | } | |
1413 | $self->{DEBUG} && print "loading a gif file\n"; | |
1414 | } | |
1415 | ||
1416 | if ( $input{'type'} eq 'tga' ) { | |
1417 | $self->{IMG}=i_readtga_wiol( $IO, -1 ); # Fixme, check if that length parameter is ever needed | |
1418 | if ( !defined($self->{IMG}) ) { | |
1419 | $self->{ERRSTR}=$self->_error_as_msg(); | |
1420 | return undef; | |
1421 | } | |
1422 | $self->{DEBUG} && print "loading a tga file\n"; | |
1423 | } | |
1424 | ||
1425 | if ( $input{'type'} eq 'raw' ) { | |
1426 | my %params=(datachannels=>3,storechannels=>3,interleave=>1,%input); | |
1427 | ||
1428 | if ( !($params{xsize} && $params{ysize}) ) { | |
1429 | $self->{ERRSTR}='missing xsize or ysize parameter for raw'; | |
1430 | return undef; | |
1431 | } | |
1432 | ||
1433 | $self->{IMG} = i_readraw_wiol( $IO, | |
1434 | $params{xsize}, | |
1435 | $params{ysize}, | |
1436 | $params{datachannels}, | |
1437 | $params{storechannels}, | |
1438 | $params{interleave}); | |
1439 | if ( !defined($self->{IMG}) ) { | |
1440 | $self->{ERRSTR}=$self->_error_as_msg(); | |
1441 | return undef; | |
1442 | } | |
1443 | $self->{DEBUG} && print "loading a raw file\n"; | |
1444 | } | |
1445 | ||
1446 | return $self; | |
1447 | } | |
1448 | ||
1449 | sub register_reader { | |
1450 | my ($class, %opts) = @_; | |
1451 | ||
1452 | defined $opts{type} | |
1453 | or die "register_reader called with no type parameter\n"; | |
1454 | ||
1455 | my $type = $opts{type}; | |
1456 | ||
1457 | defined $opts{single} || defined $opts{multiple} | |
1458 | or die "register_reader called with no single or multiple parameter\n"; | |
1459 | ||
1460 | $readers{$type} = { }; | |
1461 | if ($opts{single}) { | |
1462 | $readers{$type}{single} = $opts{single}; | |
1463 | } | |
1464 | if ($opts{multiple}) { | |
1465 | $readers{$type}{multiple} = $opts{multiple}; | |
1466 | } | |
1467 | ||
1468 | return 1; | |
1469 | } | |
1470 | ||
1471 | sub register_writer { | |
1472 | my ($class, %opts) = @_; | |
1473 | ||
1474 | defined $opts{type} | |
1475 | or die "register_writer called with no type parameter\n"; | |
1476 | ||
1477 | my $type = $opts{type}; | |
1478 | ||
1479 | defined $opts{single} || defined $opts{multiple} | |
1480 | or die "register_writer called with no single or multiple parameter\n"; | |
1481 | ||
1482 | $writers{$type} = { }; | |
1483 | if ($opts{single}) { | |
1484 | $writers{$type}{single} = $opts{single}; | |
1485 | } | |
1486 | if ($opts{multiple}) { | |
1487 | $writers{$type}{multiple} = $opts{multiple}; | |
1488 | } | |
1489 | ||
1490 | return 1; | |
1491 | } | |
1492 | ||
1493 | sub read_types { | |
1494 | my %types = | |
1495 | ( | |
1496 | map { $_ => 1 } | |
1497 | keys %readers, | |
1498 | grep($file_formats{$_}, keys %formats), | |
1499 | qw(ico sgi), # formats not handled directly, but supplied with Imager | |
1500 | ); | |
1501 | ||
1502 | return keys %types; | |
1503 | } | |
1504 | ||
1505 | sub write_types { | |
1506 | my %types = | |
1507 | ( | |
1508 | map { $_ => 1 } | |
1509 | keys %writers, | |
1510 | grep($file_formats{$_}, keys %formats), | |
1511 | qw(ico sgi), # formats not handled directly, but supplied with Imager | |
1512 | ); | |
1513 | ||
1514 | return keys %types; | |
1515 | } | |
1516 | ||
1517 | # probes for an Imager::File::whatever module | |
1518 | sub _reader_autoload { | |
1519 | my $type = shift; | |
1520 | ||
1521 | return if $formats{$type} || $readers{$type}; | |
1522 | ||
1523 | return unless $type =~ /^\w+$/; | |
1524 | ||
1525 | my $file = "Imager/File/\U$type\E.pm"; | |
1526 | ||
1527 | unless ($attempted_to_load{$file}) { | |
1528 | eval { | |
1529 | ++$attempted_to_load{$file}; | |
1530 | require $file; | |
1531 | }; | |
1532 | if ($@) { | |
1533 | # try to get a reader specific module | |
1534 | my $file = "Imager/File/\U$type\EReader.pm"; | |
1535 | unless ($attempted_to_load{$file}) { | |
1536 | eval { | |
1537 | ++$attempted_to_load{$file}; | |
1538 | require $file; | |
1539 | }; | |
1540 | } | |
1541 | } | |
1542 | } | |
1543 | } | |
1544 | ||
1545 | # probes for an Imager::File::whatever module | |
1546 | sub _writer_autoload { | |
1547 | my $type = shift; | |
1548 | ||
1549 | return if $formats{$type} || $readers{$type}; | |
1550 | ||
1551 | return unless $type =~ /^\w+$/; | |
1552 | ||
1553 | my $file = "Imager/File/\U$type\E.pm"; | |
1554 | ||
1555 | unless ($attempted_to_load{$file}) { | |
1556 | eval { | |
1557 | ++$attempted_to_load{$file}; | |
1558 | require $file; | |
1559 | }; | |
1560 | if ($@) { | |
1561 | # try to get a writer specific module | |
1562 | my $file = "Imager/File/\U$type\EWriter.pm"; | |
1563 | unless ($attempted_to_load{$file}) { | |
1564 | eval { | |
1565 | ++$attempted_to_load{$file}; | |
1566 | require $file; | |
1567 | }; | |
1568 | } | |
1569 | } | |
1570 | } | |
1571 | } | |
1572 | ||
1573 | sub _fix_gif_positions { | |
1574 | my ($opts, $opt, $msg, @imgs) = @_; | |
1575 | ||
1576 | my $positions = $opts->{'gif_positions'}; | |
1577 | my $index = 0; | |
1578 | for my $pos (@$positions) { | |
1579 | my ($x, $y) = @$pos; | |
1580 | my $img = $imgs[$index++]; | |
1581 | $img->settag(name=>'gif_left', value=>$x); | |
1582 | $img->settag(name=>'gif_top', value=>$y) if defined $y; | |
1583 | } | |
1584 | $$msg .= "replaced with the gif_left and gif_top tags"; | |
1585 | } | |
1586 | ||
1587 | my %obsolete_opts = | |
1588 | ( | |
1589 | gif_each_palette=>'gif_local_map', | |
1590 | interlace => 'gif_interlace', | |
1591 | gif_delays => 'gif_delay', | |
1592 | gif_positions => \&_fix_gif_positions, | |
1593 | gif_loop_count => 'gif_loop', | |
1594 | ); | |
1595 | ||
1596 | # options that should be converted to colors | |
1597 | my %color_opts = map { $_ => 1 } qw/i_background/; | |
1598 | ||
1599 | sub _set_opts { | |
1600 | my ($self, $opts, $prefix, @imgs) = @_; | |
1601 | ||
1602 | for my $opt (keys %$opts) { | |
1603 | my $tagname = $opt; | |
1604 | if ($obsolete_opts{$opt}) { | |
1605 | my $new = $obsolete_opts{$opt}; | |
1606 | my $msg = "Obsolete option $opt "; | |
1607 | if (ref $new) { | |
1608 | $new->($opts, $opt, \$msg, @imgs); | |
1609 | } | |
1610 | else { | |
1611 | $msg .= "replaced with the $new tag "; | |
1612 | $tagname = $new; | |
1613 | } | |
1614 | $msg .= "line ".(caller(2))[2]." of file ".(caller(2))[1]; | |
1615 | warn $msg if $warn_obsolete && $^W; | |
1616 | } | |
1617 | next unless $tagname =~ /^\Q$prefix/; | |
1618 | my $value = $opts->{$opt}; | |
1619 | if ($color_opts{$opt}) { | |
1620 | $value = _color($value); | |
1621 | unless ($value) { | |
1622 | $self->_set_error($Imager::ERRSTR); | |
1623 | return; | |
1624 | } | |
1625 | } | |
1626 | if (ref $value) { | |
1627 | if (UNIVERSAL::isa($value, "Imager::Color")) { | |
1628 | my $tag = sprintf("color(%d,%d,%d,%d)", $value->rgba); | |
1629 | for my $img (@imgs) { | |
1630 | $img->settag(name=>$tagname, value=>$tag); | |
1631 | } | |
1632 | } | |
1633 | elsif (ref($value) eq 'ARRAY') { | |
1634 | for my $i (0..$#$value) { | |
1635 | my $val = $value->[$i]; | |
1636 | if (ref $val) { | |
1637 | if (UNIVERSAL::isa($val, "Imager::Color")) { | |
1638 | my $tag = sprintf("color(%d,%d,%d,%d)", $value->rgba); | |
1639 | $i < @imgs and | |
1640 | $imgs[$i]->settag(name=>$tagname, value=>$tag); | |
1641 | } | |
1642 | else { | |
1643 | $self->_set_error("Unknown reference type " . ref($value) . | |
1644 | " supplied in array for $opt"); | |
1645 | return; | |
1646 | } | |
1647 | } | |
1648 | else { | |
1649 | $i < @imgs | |
1650 | and $imgs[$i]->settag(name=>$tagname, value=>$val); | |
1651 | } | |
1652 | } | |
1653 | } | |
1654 | else { | |
1655 | $self->_set_error("Unknown reference type " . ref($value) . | |
1656 | " supplied for $opt"); | |
1657 | return; | |
1658 | } | |
1659 | } | |
1660 | else { | |
1661 | # set it as a tag for every image | |
1662 | for my $img (@imgs) { | |
1663 | $img->settag(name=>$tagname, value=>$value); | |
1664 | } | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | return 1; | |
1669 | } | |
1670 | ||
1671 | # Write an image to file | |
1672 | sub write { | |
1673 | my $self = shift; | |
1674 | my %input=(jpegquality=>75, | |
1675 | gifquant=>'mc', | |
1676 | lmdither=>6.0, | |
1677 | lmfixed=>[], | |
1678 | idstring=>"", | |
1679 | compress=>1, | |
1680 | wierdpack=>0, | |
1681 | fax_fine=>1, @_); | |
1682 | my $rc; | |
1683 | ||
1684 | $self->_set_opts(\%input, "i_", $self) | |
1685 | or return undef; | |
1686 | ||
1687 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
1688 | ||
1689 | if (!$input{'type'} and $input{file}) { | |
1690 | $input{'type'}=$FORMATGUESS->($input{file}); | |
1691 | } | |
1692 | if (!$input{'type'}) { | |
1693 | $self->{ERRSTR}='type parameter missing and not possible to guess from extension'; | |
1694 | return undef; | |
1695 | } | |
1696 | ||
1697 | _writer_autoload($input{type}); | |
1698 | ||
1699 | my ($IO, $fh); | |
1700 | if ($writers{$input{type}} && $writers{$input{type}}{single}) { | |
1701 | ($IO, $fh) = $self->_get_writer_io(\%input, $input{'type'}) | |
1702 | or return undef; | |
1703 | ||
1704 | $writers{$input{type}}{single}->($self, $IO, %input) | |
1705 | or return undef; | |
1706 | } | |
1707 | else { | |
1708 | if (!$formats{$input{'type'}}) { | |
1709 | my $write_types = join ', ', sort Imager->write_types(); | |
1710 | $self->_set_error("format '$input{'type'}' not supported - formats $write_types available for writing"); | |
1711 | return undef; | |
1712 | } | |
1713 | ||
1714 | ($IO, $fh) = $self->_get_writer_io(\%input, $input{'type'}) | |
1715 | or return undef; | |
1716 | ||
1717 | if ($input{'type'} eq 'tiff') { | |
1718 | $self->_set_opts(\%input, "tiff_", $self) | |
1719 | or return undef; | |
1720 | $self->_set_opts(\%input, "exif_", $self) | |
1721 | or return undef; | |
1722 | ||
1723 | if (defined $input{class} && $input{class} eq 'fax') { | |
1724 | if (!i_writetiff_wiol_faxable($self->{IMG}, $IO, $input{fax_fine})) { | |
1725 | $self->{ERRSTR} = $self->_error_as_msg(); | |
1726 | return undef; | |
1727 | } | |
1728 | } else { | |
1729 | if (!i_writetiff_wiol($self->{IMG}, $IO)) { | |
1730 | $self->{ERRSTR} = $self->_error_as_msg(); | |
1731 | return undef; | |
1732 | } | |
1733 | } | |
1734 | } elsif ( $input{'type'} eq 'pnm' ) { | |
1735 | $self->_set_opts(\%input, "pnm_", $self) | |
1736 | or return undef; | |
1737 | if ( ! i_writeppm_wiol($self->{IMG},$IO) ) { | |
1738 | $self->{ERRSTR} = $self->_error_as_msg(); | |
1739 | return undef; | |
1740 | } | |
1741 | $self->{DEBUG} && print "writing a pnm file\n"; | |
1742 | } elsif ( $input{'type'} eq 'raw' ) { | |
1743 | $self->_set_opts(\%input, "raw_", $self) | |
1744 | or return undef; | |
1745 | if ( !i_writeraw_wiol($self->{IMG},$IO) ) { | |
1746 | $self->{ERRSTR} = $self->_error_as_msg(); | |
1747 | return undef; | |
1748 | } | |
1749 | $self->{DEBUG} && print "writing a raw file\n"; | |
1750 | } elsif ( $input{'type'} eq 'png' ) { | |
1751 | $self->_set_opts(\%input, "png_", $self) | |
1752 | or return undef; | |
1753 | if ( !i_writepng_wiol($self->{IMG}, $IO) ) { | |
1754 | $self->{ERRSTR}='unable to write png image'; | |
1755 | return undef; | |
1756 | } | |
1757 | $self->{DEBUG} && print "writing a png file\n"; | |
1758 | } elsif ( $input{'type'} eq 'jpeg' ) { | |
1759 | $self->_set_opts(\%input, "jpeg_", $self) | |
1760 | or return undef; | |
1761 | $self->_set_opts(\%input, "exif_", $self) | |
1762 | or return undef; | |
1763 | if ( !i_writejpeg_wiol($self->{IMG}, $IO, $input{jpegquality})) { | |
1764 | $self->{ERRSTR} = $self->_error_as_msg(); | |
1765 | return undef; | |
1766 | } | |
1767 | $self->{DEBUG} && print "writing a jpeg file\n"; | |
1768 | } elsif ( $input{'type'} eq 'bmp' ) { | |
1769 | $self->_set_opts(\%input, "bmp_", $self) | |
1770 | or return undef; | |
1771 | if ( !i_writebmp_wiol($self->{IMG}, $IO) ) { | |
1772 | $self->{ERRSTR} = $self->_error_as_msg; | |
1773 | return undef; | |
1774 | } | |
1775 | $self->{DEBUG} && print "writing a bmp file\n"; | |
1776 | } elsif ( $input{'type'} eq 'tga' ) { | |
1777 | $self->_set_opts(\%input, "tga_", $self) | |
1778 | or return undef; | |
1779 | ||
1780 | if ( !i_writetga_wiol($self->{IMG}, $IO, $input{wierdpack}, $input{compress}, $input{idstring}) ) { | |
1781 | $self->{ERRSTR}=$self->_error_as_msg(); | |
1782 | return undef; | |
1783 | } | |
1784 | $self->{DEBUG} && print "writing a tga file\n"; | |
1785 | } elsif ( $input{'type'} eq 'gif' ) { | |
1786 | $self->_set_opts(\%input, "gif_", $self) | |
1787 | or return undef; | |
1788 | # compatibility with the old interfaces | |
1789 | if ($input{gifquant} eq 'lm') { | |
1790 | $input{make_colors} = 'addi'; | |
1791 | $input{translate} = 'perturb'; | |
1792 | $input{perturb} = $input{lmdither}; | |
1793 | } elsif ($input{gifquant} eq 'gen') { | |
1794 | # just pass options through | |
1795 | } else { | |
1796 | $input{make_colors} = 'webmap'; # ignored | |
1797 | $input{translate} = 'giflib'; | |
1798 | } | |
1799 | if (!i_writegif_wiol($IO, \%input, $self->{IMG})) { | |
1800 | $self->{ERRSTR} = $self->_error_as_msg; | |
1801 | return; | |
1802 | } | |
1803 | } | |
1804 | } | |
1805 | ||
1806 | if (exists $input{'data'}) { | |
1807 | my $data = io_slurp($IO); | |
1808 | if (!$data) { | |
1809 | $self->{ERRSTR}='Could not slurp from buffer'; | |
1810 | return undef; | |
1811 | } | |
1812 | ${$input{data}} = $data; | |
1813 | } | |
1814 | return $self; | |
1815 | } | |
1816 | ||
1817 | sub write_multi { | |
1818 | my ($class, $opts, @images) = @_; | |
1819 | ||
1820 | my $type = $opts->{type}; | |
1821 | ||
1822 | if (!$type && $opts->{'file'}) { | |
1823 | $type = $FORMATGUESS->($opts->{'file'}); | |
1824 | } | |
1825 | unless ($type) { | |
1826 | $class->_set_error('type parameter missing and not possible to guess from extension'); | |
1827 | return; | |
1828 | } | |
1829 | # translate to ImgRaw | |
1830 | if (grep !UNIVERSAL::isa($_, 'Imager') || !$_->{IMG}, @images) { | |
1831 | $class->_set_error('Usage: Imager->write_multi({ options }, @images)'); | |
1832 | return 0; | |
1833 | } | |
1834 | $class->_set_opts($opts, "i_", @images) | |
1835 | or return; | |
1836 | my @work = map $_->{IMG}, @images; | |
1837 | ||
1838 | _writer_autoload($type); | |
1839 | ||
1840 | my ($IO, $file); | |
1841 | if ($writers{$type} && $writers{$type}{multiple}) { | |
1842 | ($IO, $file) = $class->_get_writer_io($opts, $type) | |
1843 | or return undef; | |
1844 | ||
1845 | $writers{$type}{multiple}->($class, $IO, $opts, @images) | |
1846 | or return undef; | |
1847 | } | |
1848 | else { | |
1849 | if (!$formats{$type}) { | |
1850 | my $write_types = join ', ', sort Imager->write_types(); | |
1851 | $class->_set_error("format '$type' not supported - formats $write_types available for writing"); | |
1852 | return undef; | |
1853 | } | |
1854 | ||
1855 | ($IO, $file) = $class->_get_writer_io($opts, $type) | |
1856 | or return undef; | |
1857 | ||
1858 | if ($type eq 'gif') { | |
1859 | $class->_set_opts($opts, "gif_", @images) | |
1860 | or return; | |
1861 | my $gif_delays = $opts->{gif_delays}; | |
1862 | local $opts->{gif_delays} = $gif_delays; | |
1863 | if ($opts->{gif_delays} && !ref $opts->{gif_delays}) { | |
1864 | # assume the caller wants the same delay for each frame | |
1865 | $opts->{gif_delays} = [ ($gif_delays) x @images ]; | |
1866 | } | |
1867 | unless (i_writegif_wiol($IO, $opts, @work)) { | |
1868 | $class->_set_error($class->_error_as_msg()); | |
1869 | return undef; | |
1870 | } | |
1871 | } | |
1872 | elsif ($type eq 'tiff') { | |
1873 | $class->_set_opts($opts, "tiff_", @images) | |
1874 | or return; | |
1875 | $class->_set_opts($opts, "exif_", @images) | |
1876 | or return; | |
1877 | my $res; | |
1878 | $opts->{fax_fine} = 1 unless exists $opts->{fax_fine}; | |
1879 | if ($opts->{'class'} && $opts->{'class'} eq 'fax') { | |
1880 | $res = i_writetiff_multi_wiol_faxable($IO, $opts->{fax_fine}, @work); | |
1881 | } | |
1882 | else { | |
1883 | $res = i_writetiff_multi_wiol($IO, @work); | |
1884 | } | |
1885 | unless ($res) { | |
1886 | $class->_set_error($class->_error_as_msg()); | |
1887 | return undef; | |
1888 | } | |
1889 | } | |
1890 | else { | |
1891 | if (@images == 1) { | |
1892 | unless ($images[0]->write(%$opts, io => $IO, type => $type)) { | |
1893 | return 1; | |
1894 | } | |
1895 | } | |
1896 | else { | |
1897 | $ERRSTR = "Sorry, write_multi doesn't support $type yet"; | |
1898 | return 0; | |
1899 | } | |
1900 | } | |
1901 | } | |
1902 | ||
1903 | if (exists $opts->{'data'}) { | |
1904 | my $data = io_slurp($IO); | |
1905 | if (!$data) { | |
1906 | Imager->_set_error('Could not slurp from buffer'); | |
1907 | return undef; | |
1908 | } | |
1909 | ${$opts->{data}} = $data; | |
1910 | } | |
1911 | return 1; | |
1912 | } | |
1913 | ||
1914 | # read multiple images from a file | |
1915 | sub read_multi { | |
1916 | my ($class, %opts) = @_; | |
1917 | ||
1918 | my ($IO, $file) = $class->_get_reader_io(\%opts, $opts{'type'}) | |
1919 | or return; | |
1920 | ||
1921 | my $type = $opts{'type'}; | |
1922 | unless ($type) { | |
1923 | $type = i_test_format_probe($IO, -1); | |
1924 | } | |
1925 | ||
1926 | if ($opts{file} && !$type) { | |
1927 | # guess the type | |
1928 | $type = $FORMATGUESS->($opts{file}); | |
1929 | } | |
1930 | ||
1931 | unless ($type) { | |
1932 | $ERRSTR = "No type parameter supplied and it couldn't be guessed"; | |
1933 | return; | |
1934 | } | |
1935 | ||
1936 | _reader_autoload($type); | |
1937 | ||
1938 | if ($readers{$type} && $readers{$type}{multiple}) { | |
1939 | return $readers{$type}{multiple}->($IO, %opts); | |
1940 | } | |
1941 | ||
1942 | if ($type eq 'gif') { | |
1943 | my @imgs; | |
1944 | @imgs = i_readgif_multi_wiol($IO); | |
1945 | if (@imgs) { | |
1946 | return map { | |
1947 | bless { IMG=>$_, DEBUG=>$DEBUG, ERRSTR=>undef }, 'Imager' | |
1948 | } @imgs; | |
1949 | } | |
1950 | else { | |
1951 | $ERRSTR = _error_as_msg(); | |
1952 | return; | |
1953 | } | |
1954 | } | |
1955 | elsif ($type eq 'tiff') { | |
1956 | my @imgs = i_readtiff_multi_wiol($IO, -1); | |
1957 | if (@imgs) { | |
1958 | return map { | |
1959 | bless { IMG=>$_, DEBUG=>$DEBUG, ERRSTR=>undef }, 'Imager' | |
1960 | } @imgs; | |
1961 | } | |
1962 | else { | |
1963 | $ERRSTR = _error_as_msg(); | |
1964 | return; | |
1965 | } | |
1966 | } | |
1967 | else { | |
1968 | my $img = Imager->new; | |
1969 | if ($img->read(%opts, io => $IO, type => $type)) { | |
1970 | return ( $img ); | |
1971 | } | |
1972 | Imager->_set_error($img->errstr); | |
1973 | } | |
1974 | ||
1975 | return; | |
1976 | } | |
1977 | ||
1978 | # Destroy an Imager object | |
1979 | ||
1980 | sub DESTROY { | |
1981 | my $self=shift; | |
1982 | # delete $instances{$self}; | |
1983 | if (defined($self->{IMG})) { | |
1984 | # the following is now handled by the XS DESTROY method for | |
1985 | # Imager::ImgRaw object | |
1986 | # Re-enabling this will break virtual images | |
1987 | # tested for in t/t020masked.t | |
1988 | # i_img_destroy($self->{IMG}); | |
1989 | undef($self->{IMG}); | |
1990 | } else { | |
1991 | # print "Destroy Called on an empty image!\n"; # why did I put this here?? | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | # Perform an inplace filter of an image | |
1996 | # that is the image will be overwritten with the data | |
1997 | ||
1998 | sub filter { | |
1999 | my $self=shift; | |
2000 | my %input=@_; | |
2001 | my %hsh; | |
2002 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2003 | ||
2004 | if (!$input{'type'}) { $self->{ERRSTR}='type parameter missing'; return undef; } | |
2005 | ||
2006 | if ( (grep { $_ eq $input{'type'} } keys %filters) != 1) { | |
2007 | $self->{ERRSTR}='type parameter not matching any filter'; return undef; | |
2008 | } | |
2009 | ||
2010 | if ($filters{$input{'type'}}{names}) { | |
2011 | my $names = $filters{$input{'type'}}{names}; | |
2012 | for my $name (keys %$names) { | |
2013 | if (defined $input{$name} && exists $names->{$name}{$input{$name}}) { | |
2014 | $input{$name} = $names->{$name}{$input{$name}}; | |
2015 | } | |
2016 | } | |
2017 | } | |
2018 | if (defined($filters{$input{'type'}}{defaults})) { | |
2019 | %hsh=( image => $self->{IMG}, | |
2020 | imager => $self, | |
2021 | %{$filters{$input{'type'}}{defaults}}, | |
2022 | %input ); | |
2023 | } else { | |
2024 | %hsh=( image => $self->{IMG}, | |
2025 | imager => $self, | |
2026 | %input ); | |
2027 | } | |
2028 | ||
2029 | my @cs=@{$filters{$input{'type'}}{callseq}}; | |
2030 | ||
2031 | for(@cs) { | |
2032 | if (!defined($hsh{$_})) { | |
2033 | $self->{ERRSTR}="missing parameter '$_' for filter ".$input{'type'}; return undef; | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | eval { | |
2038 | local $SIG{__DIE__}; # we don't want this processed by confess, etc | |
2039 | &{$filters{$input{'type'}}{callsub}}(%hsh); | |
2040 | }; | |
2041 | if ($@) { | |
2042 | chomp($self->{ERRSTR} = $@); | |
2043 | return; | |
2044 | } | |
2045 | ||
2046 | my @b=keys %hsh; | |
2047 | ||
2048 | $self->{DEBUG} && print "callseq is: @cs\n"; | |
2049 | $self->{DEBUG} && print "matching callseq is: @b\n"; | |
2050 | ||
2051 | return $self; | |
2052 | } | |
2053 | ||
2054 | sub register_filter { | |
2055 | my $class = shift; | |
2056 | my %hsh = ( defaults => {}, @_ ); | |
2057 | ||
2058 | defined $hsh{type} | |
2059 | or die "register_filter() with no type\n"; | |
2060 | defined $hsh{callsub} | |
2061 | or die "register_filter() with no callsub\n"; | |
2062 | defined $hsh{callseq} | |
2063 | or die "register_filter() with no callseq\n"; | |
2064 | ||
2065 | exists $filters{$hsh{type}} | |
2066 | and return; | |
2067 | ||
2068 | $filters{$hsh{type}} = \%hsh; | |
2069 | ||
2070 | return 1; | |
2071 | } | |
2072 | ||
2073 | sub scale_calculate { | |
2074 | my $self = shift; | |
2075 | ||
2076 | my %opts = ('type'=>'max', @_); | |
2077 | ||
2078 | my ($x_scale, $y_scale); | |
2079 | my $width = $opts{width}; | |
2080 | my $height = $opts{height}; | |
2081 | if (ref $self) { | |
2082 | defined $width or $width = $self->getwidth; | |
2083 | defined $height or $height = $self->getheight; | |
2084 | } | |
2085 | else { | |
2086 | unless (defined $width && defined $height) { | |
2087 | $self->_set_error("scale_calculate: width and height parameters must be supplied when called as a class method"); | |
2088 | return; | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | if ($opts{'xscalefactor'} && $opts{'yscalefactor'}) { | |
2093 | $x_scale = $opts{'xscalefactor'}; | |
2094 | $y_scale = $opts{'yscalefactor'}; | |
2095 | } | |
2096 | elsif ($opts{'xscalefactor'}) { | |
2097 | $x_scale = $opts{'xscalefactor'}; | |
2098 | $y_scale = $opts{'scalefactor'} || $x_scale; | |
2099 | } | |
2100 | elsif ($opts{'yscalefactor'}) { | |
2101 | $y_scale = $opts{'yscalefactor'}; | |
2102 | $x_scale = $opts{'scalefactor'} || $y_scale; | |
2103 | } | |
2104 | else { | |
2105 | $x_scale = $y_scale = $opts{'scalefactor'} || 0.5; | |
2106 | } | |
2107 | ||
2108 | # work out the scaling | |
2109 | if ($opts{xpixels} and $opts{ypixels} and $opts{'type'}) { | |
2110 | my ($xpix, $ypix)=( $opts{xpixels} / $width , | |
2111 | $opts{ypixels} / $height ); | |
2112 | if ($opts{'type'} eq 'min') { | |
2113 | $x_scale = $y_scale = _min($xpix,$ypix); | |
2114 | } | |
2115 | elsif ($opts{'type'} eq 'max') { | |
2116 | $x_scale = $y_scale = _max($xpix,$ypix); | |
2117 | } | |
2118 | elsif ($opts{'type'} eq 'nonprop' || $opts{'type'} eq 'non-proportional') { | |
2119 | $x_scale = $xpix; | |
2120 | $y_scale = $ypix; | |
2121 | } | |
2122 | else { | |
2123 | $self->_set_error('invalid value for type parameter'); | |
2124 | return; | |
2125 | } | |
2126 | } elsif ($opts{xpixels}) { | |
2127 | $x_scale = $y_scale = $opts{xpixels} / $width; | |
2128 | } | |
2129 | elsif ($opts{ypixels}) { | |
2130 | $x_scale = $y_scale = $opts{ypixels}/$height; | |
2131 | } | |
2132 | elsif ($opts{constrain} && ref $opts{constrain} | |
2133 | && $opts{constrain}->can('constrain')) { | |
2134 | # we've been passed an Image::Math::Constrain object or something | |
2135 | # that looks like one | |
2136 | my $scalefactor; | |
2137 | (undef, undef, $scalefactor) | |
2138 | = $opts{constrain}->constrain($self->getwidth, $self->getheight); | |
2139 | unless ($scalefactor) { | |
2140 | $self->_set_error('constrain method failed on constrain parameter'); | |
2141 | return; | |
2142 | } | |
2143 | $x_scale = $y_scale = $scalefactor; | |
2144 | } | |
2145 | ||
2146 | my $new_width = int($x_scale * $width + 0.5); | |
2147 | $new_width > 0 or $new_width = 1; | |
2148 | my $new_height = int($y_scale * $height + 0.5); | |
2149 | $new_height > 0 or $new_height = 1; | |
2150 | ||
2151 | return ($x_scale, $y_scale, $new_width, $new_height); | |
2152 | ||
2153 | } | |
2154 | ||
2155 | # Scale an image to requested size and return the scaled version | |
2156 | ||
2157 | sub scale { | |
2158 | my $self=shift; | |
2159 | my %opts = (qtype=>'normal' ,@_); | |
2160 | my $img = Imager->new(); | |
2161 | my $tmp = Imager->new(); | |
2162 | ||
2163 | unless (defined wantarray) { | |
2164 | my @caller = caller; | |
2165 | warn "scale() called in void context - scale() returns the scaled image at $caller[1] line $caller[2]\n"; | |
2166 | return; | |
2167 | } | |
2168 | ||
2169 | unless ($self->{IMG}) { | |
2170 | $self->_set_error('empty input image'); | |
2171 | return undef; | |
2172 | } | |
2173 | ||
2174 | my ($x_scale, $y_scale, $new_width, $new_height) = | |
2175 | $self->scale_calculate(%opts) | |
2176 | or return; | |
2177 | ||
2178 | if ($opts{qtype} eq 'normal') { | |
2179 | $tmp->{IMG} = i_scaleaxis($self->{IMG}, $x_scale, 0); | |
2180 | if ( !defined($tmp->{IMG}) ) { | |
2181 | $self->{ERRSTR} = 'unable to scale image'; | |
2182 | return undef; | |
2183 | } | |
2184 | $img->{IMG}=i_scaleaxis($tmp->{IMG}, $y_scale, 1); | |
2185 | if ( !defined($img->{IMG}) ) { | |
2186 | $self->{ERRSTR}='unable to scale image'; | |
2187 | return undef; | |
2188 | } | |
2189 | ||
2190 | return $img; | |
2191 | } | |
2192 | elsif ($opts{'qtype'} eq 'preview') { | |
2193 | $img->{IMG} = i_scale_nn($self->{IMG}, $x_scale, $y_scale); | |
2194 | if ( !defined($img->{IMG}) ) { | |
2195 | $self->{ERRSTR}='unable to scale image'; | |
2196 | return undef; | |
2197 | } | |
2198 | return $img; | |
2199 | } | |
2200 | elsif ($opts{'qtype'} eq 'mixing') { | |
2201 | $img->{IMG} = i_scale_mixing($self->{IMG}, $new_width, $new_height); | |
2202 | unless ($img->{IMG}) { | |
2203 | $self->_set_error(Imager->_error_as_meg); | |
2204 | return; | |
2205 | } | |
2206 | return $img; | |
2207 | } | |
2208 | else { | |
2209 | $self->_set_error('invalid value for qtype parameter'); | |
2210 | return undef; | |
2211 | } | |
2212 | } | |
2213 | ||
2214 | # Scales only along the X axis | |
2215 | ||
2216 | sub scaleX { | |
2217 | my $self = shift; | |
2218 | my %opts = ( scalefactor=>0.5, @_ ); | |
2219 | ||
2220 | unless (defined wantarray) { | |
2221 | my @caller = caller; | |
2222 | warn "scaleX() called in void context - scaleX() returns the scaled image at $caller[1] line $caller[2]\n"; | |
2223 | return; | |
2224 | } | |
2225 | ||
2226 | unless ($self->{IMG}) { | |
2227 | $self->{ERRSTR} = 'empty input image'; | |
2228 | return undef; | |
2229 | } | |
2230 | ||
2231 | my $img = Imager->new(); | |
2232 | ||
2233 | my $scalefactor = $opts{scalefactor}; | |
2234 | ||
2235 | if ($opts{pixels}) { | |
2236 | $scalefactor = $opts{pixels} / $self->getwidth(); | |
2237 | } | |
2238 | ||
2239 | unless ($self->{IMG}) { | |
2240 | $self->{ERRSTR}='empty input image'; | |
2241 | return undef; | |
2242 | } | |
2243 | ||
2244 | $img->{IMG} = i_scaleaxis($self->{IMG}, $scalefactor, 0); | |
2245 | ||
2246 | if ( !defined($img->{IMG}) ) { | |
2247 | $self->{ERRSTR} = 'unable to scale image'; | |
2248 | return undef; | |
2249 | } | |
2250 | ||
2251 | return $img; | |
2252 | } | |
2253 | ||
2254 | # Scales only along the Y axis | |
2255 | ||
2256 | sub scaleY { | |
2257 | my $self = shift; | |
2258 | my %opts = ( scalefactor => 0.5, @_ ); | |
2259 | ||
2260 | unless (defined wantarray) { | |
2261 | my @caller = caller; | |
2262 | warn "scaleY() called in void context - scaleY() returns the scaled image at $caller[1] line $caller[2]\n"; | |
2263 | return; | |
2264 | } | |
2265 | ||
2266 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2267 | ||
2268 | my $img = Imager->new(); | |
2269 | ||
2270 | my $scalefactor = $opts{scalefactor}; | |
2271 | ||
2272 | if ($opts{pixels}) { | |
2273 | $scalefactor = $opts{pixels} / $self->getheight(); | |
2274 | } | |
2275 | ||
2276 | unless ($self->{IMG}) { | |
2277 | $self->{ERRSTR} = 'empty input image'; | |
2278 | return undef; | |
2279 | } | |
2280 | $img->{IMG}=i_scaleaxis($self->{IMG}, $scalefactor, 1); | |
2281 | ||
2282 | if ( !defined($img->{IMG}) ) { | |
2283 | $self->{ERRSTR} = 'unable to scale image'; | |
2284 | return undef; | |
2285 | } | |
2286 | ||
2287 | return $img; | |
2288 | } | |
2289 | ||
2290 | # Transform returns a spatial transformation of the input image | |
2291 | # this moves pixels to a new location in the returned image. | |
2292 | # NOTE - should make a utility function to check transforms for | |
2293 | # stack overruns | |
2294 | ||
2295 | sub transform { | |
2296 | my $self=shift; | |
2297 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2298 | my %opts=@_; | |
2299 | my (@op,@ropx,@ropy,$iop,$or,@parm,$expr,@xt,@yt,@pt,$numre); | |
2300 | ||
2301 | # print Dumper(\%opts); | |
2302 | # xopcopdes | |
2303 | ||
2304 | if ( $opts{'xexpr'} and $opts{'yexpr'} ) { | |
2305 | if (!$I2P) { | |
2306 | eval ("use Affix::Infix2Postfix;"); | |
2307 | print $@; | |
2308 | if ( $@ ) { | |
2309 | $self->{ERRSTR}='transform: expr given and Affix::Infix2Postfix is not avaliable.'; | |
2310 | return undef; | |
2311 | } | |
2312 | $I2P=Affix::Infix2Postfix->new('ops'=>[{op=>'+',trans=>'Add'}, | |
2313 | {op=>'-',trans=>'Sub'}, | |
2314 | {op=>'*',trans=>'Mult'}, | |
2315 | {op=>'/',trans=>'Div'}, | |
2316 | {op=>'-','type'=>'unary',trans=>'u-'}, | |
2317 | {op=>'**'}, | |
2318 | {op=>'func','type'=>'unary'}], | |
2319 | 'grouping'=>[qw( \( \) )], | |
2320 | 'func'=>[qw( sin cos )], | |
2321 | 'vars'=>[qw( x y )] | |
2322 | ); | |
2323 | } | |
2324 | ||
2325 | @xt=$I2P->translate($opts{'xexpr'}); | |
2326 | @yt=$I2P->translate($opts{'yexpr'}); | |
2327 | ||
2328 | $numre=$I2P->{'numre'}; | |
2329 | @pt=(0,0); | |
2330 | ||
2331 | for(@xt) { if (/$numre/) { push(@pt,$_); push(@{$opts{'xopcodes'}},'Parm',$#pt); } else { push(@{$opts{'xopcodes'}},$_); } } | |
2332 | for(@yt) { if (/$numre/) { push(@pt,$_); push(@{$opts{'yopcodes'}},'Parm',$#pt); } else { push(@{$opts{'yopcodes'}},$_); } } | |
2333 | @{$opts{'parm'}}=@pt; | |
2334 | } | |
2335 | ||
2336 | # print Dumper(\%opts); | |
2337 | ||
2338 | if ( !exists $opts{'xopcodes'} or @{$opts{'xopcodes'}}==0) { | |
2339 | $self->{ERRSTR}='transform: no xopcodes given.'; | |
2340 | return undef; | |
2341 | } | |
2342 | ||
2343 | @op=@{$opts{'xopcodes'}}; | |
2344 | for $iop (@op) { | |
2345 | if (!defined ($OPCODES{$iop}) and ($iop !~ /^\d+$/) ) { | |
2346 | $self->{ERRSTR}="transform: illegal opcode '$_'."; | |
2347 | return undef; | |
2348 | } | |
2349 | push(@ropx,(exists $OPCODES{$iop}) ? @{$OPCODES{$iop}} : $iop ); | |
2350 | } | |
2351 | ||
2352 | ||
2353 | # yopcopdes | |
2354 | ||
2355 | if ( !exists $opts{'yopcodes'} or @{$opts{'yopcodes'}}==0) { | |
2356 | $self->{ERRSTR}='transform: no yopcodes given.'; | |
2357 | return undef; | |
2358 | } | |
2359 | ||
2360 | @op=@{$opts{'yopcodes'}}; | |
2361 | for $iop (@op) { | |
2362 | if (!defined ($OPCODES{$iop}) and ($iop !~ /^\d+$/) ) { | |
2363 | $self->{ERRSTR}="transform: illegal opcode '$_'."; | |
2364 | return undef; | |
2365 | } | |
2366 | push(@ropy,(exists $OPCODES{$iop}) ? @{$OPCODES{$iop}} : $iop ); | |
2367 | } | |
2368 | ||
2369 | #parameters | |
2370 | ||
2371 | if ( !exists $opts{'parm'}) { | |
2372 | $self->{ERRSTR}='transform: no parameter arg given.'; | |
2373 | return undef; | |
2374 | } | |
2375 | ||
2376 | # print Dumper(\@ropx); | |
2377 | # print Dumper(\@ropy); | |
2378 | # print Dumper(\@ropy); | |
2379 | ||
2380 | my $img = Imager->new(); | |
2381 | $img->{IMG}=i_transform($self->{IMG},\@ropx,\@ropy,$opts{'parm'}); | |
2382 | if ( !defined($img->{IMG}) ) { $self->{ERRSTR}='transform: failed'; return undef; } | |
2383 | return $img; | |
2384 | } | |
2385 | ||
2386 | ||
2387 | sub transform2 { | |
2388 | my ($opts, @imgs) = @_; | |
2389 | ||
2390 | require "Imager/Expr.pm"; | |
2391 | ||
2392 | $opts->{variables} = [ qw(x y) ]; | |
2393 | my ($width, $height) = @{$opts}{qw(width height)}; | |
2394 | if (@imgs) { | |
2395 | $width ||= $imgs[0]->getwidth(); | |
2396 | $height ||= $imgs[0]->getheight(); | |
2397 | my $img_num = 1; | |
2398 | for my $img (@imgs) { | |
2399 | $opts->{constants}{"w$img_num"} = $img->getwidth(); | |
2400 | $opts->{constants}{"h$img_num"} = $img->getheight(); | |
2401 | $opts->{constants}{"cx$img_num"} = $img->getwidth()/2; | |
2402 | $opts->{constants}{"cy$img_num"} = $img->getheight()/2; | |
2403 | ++$img_num; | |
2404 | } | |
2405 | } | |
2406 | if ($width) { | |
2407 | $opts->{constants}{w} = $width; | |
2408 | $opts->{constants}{cx} = $width/2; | |
2409 | } | |
2410 | else { | |
2411 | $Imager::ERRSTR = "No width supplied"; | |
2412 | return; | |
2413 | } | |
2414 | if ($height) { | |
2415 | $opts->{constants}{h} = $height; | |
2416 | $opts->{constants}{cy} = $height/2; | |
2417 | } | |
2418 | else { | |
2419 | $Imager::ERRSTR = "No height supplied"; | |
2420 | return; | |
2421 | } | |
2422 | my $code = Imager::Expr->new($opts); | |
2423 | if (!$code) { | |
2424 | $Imager::ERRSTR = Imager::Expr::error(); | |
2425 | return; | |
2426 | } | |
2427 | my $channels = $opts->{channels} || 3; | |
2428 | unless ($channels >= 1 && $channels <= 4) { | |
2429 | return Imager->_set_error("channels must be an integer between 1 and 4"); | |
2430 | } | |
2431 | ||
2432 | my $img = Imager->new(); | |
2433 | $img->{IMG} = i_transform2($opts->{width}, $opts->{height}, | |
2434 | $channels, $code->code(), | |
2435 | $code->nregs(), $code->cregs(), | |
2436 | [ map { $_->{IMG} } @imgs ]); | |
2437 | if (!defined $img->{IMG}) { | |
2438 | $Imager::ERRSTR = Imager->_error_as_msg(); | |
2439 | return; | |
2440 | } | |
2441 | ||
2442 | return $img; | |
2443 | } | |
2444 | ||
2445 | sub rubthrough { | |
2446 | my $self=shift; | |
2447 | my %opts= @_; | |
2448 | ||
2449 | unless ($self->{IMG}) { | |
2450 | $self->{ERRSTR}='empty input image'; | |
2451 | return undef; | |
2452 | } | |
2453 | unless ($opts{src} && $opts{src}->{IMG}) { | |
2454 | $self->{ERRSTR}='empty input image for src'; | |
2455 | return undef; | |
2456 | } | |
2457 | ||
2458 | %opts = (src_minx => 0, | |
2459 | src_miny => 0, | |
2460 | src_maxx => $opts{src}->getwidth(), | |
2461 | src_maxy => $opts{src}->getheight(), | |
2462 | %opts); | |
2463 | ||
2464 | my $tx = $opts{tx}; | |
2465 | defined $tx or $tx = $opts{left}; | |
2466 | defined $tx or $tx = 0; | |
2467 | ||
2468 | my $ty = $opts{ty}; | |
2469 | defined $ty or $ty = $opts{top}; | |
2470 | defined $ty or $ty = 0; | |
2471 | ||
2472 | unless (i_rubthru($self->{IMG}, $opts{src}->{IMG}, $tx, $ty, | |
2473 | $opts{src_minx}, $opts{src_miny}, | |
2474 | $opts{src_maxx}, $opts{src_maxy})) { | |
2475 | $self->_set_error($self->_error_as_msg()); | |
2476 | return undef; | |
2477 | } | |
2478 | ||
2479 | return $self; | |
2480 | } | |
2481 | ||
2482 | sub compose { | |
2483 | my $self = shift; | |
2484 | my %opts = | |
2485 | ( | |
2486 | opacity => 1.0, | |
2487 | mask_left => 0, | |
2488 | mask_top => 0, | |
2489 | @_ | |
2490 | ); | |
2491 | ||
2492 | unless ($self->{IMG}) { | |
2493 | $self->_set_error("compose: empty input image"); | |
2494 | return; | |
2495 | } | |
2496 | ||
2497 | unless ($opts{src}) { | |
2498 | $self->_set_error("compose: src parameter missing"); | |
2499 | return; | |
2500 | } | |
2501 | ||
2502 | unless ($opts{src}{IMG}) { | |
2503 | $self->_set_error("compose: src parameter empty image"); | |
2504 | return; | |
2505 | } | |
2506 | my $src = $opts{src}; | |
2507 | ||
2508 | my $left = $opts{left}; | |
2509 | defined $left or $left = $opts{tx}; | |
2510 | defined $left or $left = 0; | |
2511 | ||
2512 | my $top = $opts{top}; | |
2513 | defined $top or $top = $opts{ty}; | |
2514 | defined $top or $top = 0; | |
2515 | ||
2516 | my $src_left = $opts{src_left}; | |
2517 | defined $src_left or $src_left = $opts{src_minx}; | |
2518 | defined $src_left or $src_left = 0; | |
2519 | ||
2520 | my $src_top = $opts{src_top}; | |
2521 | defined $src_top or $src_top = $opts{src_miny}; | |
2522 | defined $src_top or $src_top = 0; | |
2523 | ||
2524 | my $width = $opts{width}; | |
2525 | if (!defined $width && defined $opts{src_maxx}) { | |
2526 | $width = $opts{src_maxx} - $src_left; | |
2527 | } | |
2528 | defined $width or $width = $src->getwidth() - $src_left; | |
2529 | ||
2530 | my $height = $opts{height}; | |
2531 | if (!defined $height && defined $opts{src_maxy}) { | |
2532 | $height = $opts{src_maxy} - $src_top; | |
2533 | } | |
2534 | defined $height or $height = $src->getheight() - $src_top; | |
2535 | ||
2536 | my $combine = $self->_combine($opts{combine}, 'normal'); | |
2537 | ||
2538 | if ($opts{mask}) { | |
2539 | unless ($opts{mask}{IMG}) { | |
2540 | $self->_set_error("compose: mask parameter empty image"); | |
2541 | return; | |
2542 | } | |
2543 | ||
2544 | my $mask_left = $opts{mask_left}; | |
2545 | defined $mask_left or $mask_left = $opts{mask_minx}; | |
2546 | defined $mask_left or $mask_left = 0; | |
2547 | ||
2548 | my $mask_top = $opts{mask_top}; | |
2549 | defined $mask_top or $mask_top = $opts{mask_miny}; | |
2550 | defined $mask_top or $mask_top = 0; | |
2551 | ||
2552 | i_compose_mask($self->{IMG}, $src->{IMG}, $opts{mask}{IMG}, | |
2553 | $left, $top, $src_left, $src_top, | |
2554 | $mask_left, $mask_top, $width, $height, | |
2555 | $combine, $opts{opacity}) | |
2556 | or return; | |
2557 | } | |
2558 | else { | |
2559 | i_compose($self->{IMG}, $src->{IMG}, $left, $top, $src_left, $src_top, | |
2560 | $width, $height, $combine, $opts{opacity}) | |
2561 | or return; | |
2562 | } | |
2563 | ||
2564 | return $self; | |
2565 | } | |
2566 | ||
2567 | sub flip { | |
2568 | my $self = shift; | |
2569 | my %opts = @_; | |
2570 | my %xlate = (h=>0, v=>1, hv=>2, vh=>2); | |
2571 | my $dir; | |
2572 | return () unless defined $opts{'dir'} and defined $xlate{$opts{'dir'}}; | |
2573 | $dir = $xlate{$opts{'dir'}}; | |
2574 | return $self if i_flipxy($self->{IMG}, $dir); | |
2575 | return (); | |
2576 | } | |
2577 | ||
2578 | sub rotate { | |
2579 | my $self = shift; | |
2580 | my %opts = @_; | |
2581 | ||
2582 | unless (defined wantarray) { | |
2583 | my @caller = caller; | |
2584 | warn "rotate() called in void context - rotate() returns the rotated image at $caller[1] line $caller[2]\n"; | |
2585 | return; | |
2586 | } | |
2587 | ||
2588 | if (defined $opts{right}) { | |
2589 | my $degrees = $opts{right}; | |
2590 | if ($degrees < 0) { | |
2591 | $degrees += 360 * int(((-$degrees)+360)/360); | |
2592 | } | |
2593 | $degrees = $degrees % 360; | |
2594 | if ($degrees == 0) { | |
2595 | return $self->copy(); | |
2596 | } | |
2597 | elsif ($degrees == 90 || $degrees == 180 || $degrees == 270) { | |
2598 | my $result = Imager->new(); | |
2599 | if ($result->{IMG} = i_rotate90($self->{IMG}, $degrees)) { | |
2600 | return $result; | |
2601 | } | |
2602 | else { | |
2603 | $self->{ERRSTR} = $self->_error_as_msg(); | |
2604 | return undef; | |
2605 | } | |
2606 | } | |
2607 | else { | |
2608 | $self->{ERRSTR} = "Parameter 'right' must be a multiple of 90 degrees"; | |
2609 | return undef; | |
2610 | } | |
2611 | } | |
2612 | elsif (defined $opts{radians} || defined $opts{degrees}) { | |
2613 | my $amount = $opts{radians} || $opts{degrees} * 3.1415926535 / 180; | |
2614 | ||
2615 | my $back = $opts{back}; | |
2616 | my $result = Imager->new; | |
2617 | if ($back) { | |
2618 | $back = _color($back); | |
2619 | unless ($back) { | |
2620 | $self->_set_error(Imager->errstr); | |
2621 | return undef; | |
2622 | } | |
2623 | ||
2624 | $result->{IMG} = i_rotate_exact($self->{IMG}, $amount, $back); | |
2625 | } | |
2626 | else { | |
2627 | $result->{IMG} = i_rotate_exact($self->{IMG}, $amount); | |
2628 | } | |
2629 | if ($result->{IMG}) { | |
2630 | return $result; | |
2631 | } | |
2632 | else { | |
2633 | $self->{ERRSTR} = $self->_error_as_msg(); | |
2634 | return undef; | |
2635 | } | |
2636 | } | |
2637 | else { | |
2638 | $self->{ERRSTR} = "Only the 'right', 'radians' and 'degrees' parameters are available"; | |
2639 | return undef; | |
2640 | } | |
2641 | } | |
2642 | ||
2643 | sub matrix_transform { | |
2644 | my $self = shift; | |
2645 | my %opts = @_; | |
2646 | ||
2647 | unless (defined wantarray) { | |
2648 | my @caller = caller; | |
2649 | warn "copy() called in void context - copy() returns the copied image at $caller[1] line $caller[2]\n"; | |
2650 | return; | |
2651 | } | |
2652 | ||
2653 | if ($opts{matrix}) { | |
2654 | my $xsize = $opts{xsize} || $self->getwidth; | |
2655 | my $ysize = $opts{ysize} || $self->getheight; | |
2656 | ||
2657 | my $result = Imager->new; | |
2658 | if ($opts{back}) { | |
2659 | $result->{IMG} = i_matrix_transform($self->{IMG}, $xsize, $ysize, | |
2660 | $opts{matrix}, $opts{back}) | |
2661 | or return undef; | |
2662 | } | |
2663 | else { | |
2664 | $result->{IMG} = i_matrix_transform($self->{IMG}, $xsize, $ysize, | |
2665 | $opts{matrix}) | |
2666 | or return undef; | |
2667 | } | |
2668 | ||
2669 | return $result; | |
2670 | } | |
2671 | else { | |
2672 | $self->{ERRSTR} = "matrix parameter required"; | |
2673 | return undef; | |
2674 | } | |
2675 | } | |
2676 | ||
2677 | # blame Leolo :) | |
2678 | *yatf = \&matrix_transform; | |
2679 | ||
2680 | # These two are supported for legacy code only | |
2681 | ||
2682 | sub i_color_new { | |
2683 | return Imager::Color->new(@_); | |
2684 | } | |
2685 | ||
2686 | sub i_color_set { | |
2687 | return Imager::Color::set(@_); | |
2688 | } | |
2689 | ||
2690 | # Draws a box between the specified corner points. | |
2691 | sub box { | |
2692 | my $self=shift; | |
2693 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2694 | my $dflcl=i_color_new(255,255,255,255); | |
2695 | my %opts=(color=>$dflcl,xmin=>0,ymin=>0,xmax=>$self->getwidth()-1,ymax=>$self->getheight()-1,@_); | |
2696 | ||
2697 | if (exists $opts{'box'}) { | |
2698 | $opts{'xmin'} = _min($opts{'box'}->[0],$opts{'box'}->[2]); | |
2699 | $opts{'xmax'} = _max($opts{'box'}->[0],$opts{'box'}->[2]); | |
2700 | $opts{'ymin'} = _min($opts{'box'}->[1],$opts{'box'}->[3]); | |
2701 | $opts{'ymax'} = _max($opts{'box'}->[1],$opts{'box'}->[3]); | |
2702 | } | |
2703 | ||
2704 | if ($opts{filled}) { | |
2705 | my $color = _color($opts{'color'}); | |
2706 | unless ($color) { | |
2707 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2708 | return; | |
2709 | } | |
2710 | i_box_filled($self->{IMG},$opts{xmin},$opts{ymin},$opts{xmax}, | |
2711 | $opts{ymax}, $color); | |
2712 | } | |
2713 | elsif ($opts{fill}) { | |
2714 | unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) { | |
2715 | # assume it's a hash ref | |
2716 | require 'Imager/Fill.pm'; | |
2717 | unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) { | |
2718 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2719 | return undef; | |
2720 | } | |
2721 | } | |
2722 | i_box_cfill($self->{IMG},$opts{xmin},$opts{ymin},$opts{xmax}, | |
2723 | $opts{ymax},$opts{fill}{fill}); | |
2724 | } | |
2725 | else { | |
2726 | my $color = _color($opts{'color'}); | |
2727 | unless ($color) { | |
2728 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2729 | return; | |
2730 | } | |
2731 | i_box($self->{IMG},$opts{xmin},$opts{ymin},$opts{xmax},$opts{ymax}, | |
2732 | $color); | |
2733 | } | |
2734 | return $self; | |
2735 | } | |
2736 | ||
2737 | sub arc { | |
2738 | my $self=shift; | |
2739 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2740 | my $dflcl=i_color_new(255,255,255,255); | |
2741 | my %opts=(color=>$dflcl, | |
2742 | 'r'=>_min($self->getwidth(),$self->getheight())/3, | |
2743 | 'x'=>$self->getwidth()/2, | |
2744 | 'y'=>$self->getheight()/2, | |
2745 | 'd1'=>0, 'd2'=>361, @_); | |
2746 | if ($opts{aa}) { | |
2747 | if ($opts{fill}) { | |
2748 | unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) { | |
2749 | # assume it's a hash ref | |
2750 | require 'Imager/Fill.pm'; | |
2751 | unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) { | |
2752 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2753 | return; | |
2754 | } | |
2755 | } | |
2756 | i_arc_aa_cfill($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'},$opts{'d1'}, | |
2757 | $opts{'d2'}, $opts{fill}{fill}); | |
2758 | } | |
2759 | else { | |
2760 | my $color = _color($opts{'color'}); | |
2761 | unless ($color) { | |
2762 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2763 | return; | |
2764 | } | |
2765 | if ($opts{d1} == 0 && $opts{d2} == 361 && $opts{aa}) { | |
2766 | i_circle_aa($self->{IMG}, $opts{'x'}, $opts{'y'}, $opts{'r'}, | |
2767 | $color); | |
2768 | } | |
2769 | else { | |
2770 | i_arc_aa($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'}, | |
2771 | $opts{'d1'}, $opts{'d2'}, $color); | |
2772 | } | |
2773 | } | |
2774 | } | |
2775 | else { | |
2776 | if ($opts{fill}) { | |
2777 | unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) { | |
2778 | # assume it's a hash ref | |
2779 | require 'Imager/Fill.pm'; | |
2780 | unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) { | |
2781 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2782 | return; | |
2783 | } | |
2784 | } | |
2785 | i_arc_cfill($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'},$opts{'d1'}, | |
2786 | $opts{'d2'}, $opts{fill}{fill}); | |
2787 | } | |
2788 | else { | |
2789 | my $color = _color($opts{'color'}); | |
2790 | unless ($color) { | |
2791 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2792 | return; | |
2793 | } | |
2794 | i_arc($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'}, | |
2795 | $opts{'d1'}, $opts{'d2'}, $color); | |
2796 | } | |
2797 | } | |
2798 | ||
2799 | return $self; | |
2800 | } | |
2801 | ||
2802 | # Draws a line from one point to the other | |
2803 | # the endpoint is set if the endp parameter is set which it is by default. | |
2804 | # to turn of the endpoint being set use endp=>0 when calling line. | |
2805 | ||
2806 | sub line { | |
2807 | my $self=shift; | |
2808 | my $dflcl=i_color_new(0,0,0,0); | |
2809 | my %opts=(color=>$dflcl, | |
2810 | endp => 1, | |
2811 | @_); | |
2812 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2813 | ||
2814 | unless (exists $opts{x1} and exists $opts{y1}) { $self->{ERRSTR}='missing begining coord'; return undef; } | |
2815 | unless (exists $opts{x2} and exists $opts{y2}) { $self->{ERRSTR}='missing ending coord'; return undef; } | |
2816 | ||
2817 | my $color = _color($opts{'color'}); | |
2818 | unless ($color) { | |
2819 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2820 | return; | |
2821 | } | |
2822 | ||
2823 | $opts{antialias} = $opts{aa} if defined $opts{aa}; | |
2824 | if ($opts{antialias}) { | |
2825 | i_line_aa($self->{IMG},$opts{x1}, $opts{y1}, $opts{x2}, $opts{y2}, | |
2826 | $color, $opts{endp}); | |
2827 | } else { | |
2828 | i_line($self->{IMG},$opts{x1}, $opts{y1}, $opts{x2}, $opts{y2}, | |
2829 | $color, $opts{endp}); | |
2830 | } | |
2831 | return $self; | |
2832 | } | |
2833 | ||
2834 | # Draws a line between an ordered set of points - It more or less just transforms this | |
2835 | # into a list of lines. | |
2836 | ||
2837 | sub polyline { | |
2838 | my $self=shift; | |
2839 | my ($pt,$ls,@points); | |
2840 | my $dflcl=i_color_new(0,0,0,0); | |
2841 | my %opts=(color=>$dflcl,@_); | |
2842 | ||
2843 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2844 | ||
2845 | if (exists($opts{points})) { @points=@{$opts{points}}; } | |
2846 | if (!exists($opts{points}) and exists($opts{'x'}) and exists($opts{'y'}) ) { | |
2847 | @points=map { [ $opts{'x'}->[$_],$opts{'y'}->[$_] ] } (0..(scalar @{$opts{'x'}}-1)); | |
2848 | } | |
2849 | ||
2850 | # print Dumper(\@points); | |
2851 | ||
2852 | my $color = _color($opts{'color'}); | |
2853 | unless ($color) { | |
2854 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2855 | return; | |
2856 | } | |
2857 | $opts{antialias} = $opts{aa} if defined $opts{aa}; | |
2858 | if ($opts{antialias}) { | |
2859 | for $pt(@points) { | |
2860 | if (defined($ls)) { | |
2861 | i_line_aa($self->{IMG},$ls->[0],$ls->[1],$pt->[0],$pt->[1],$color, 1); | |
2862 | } | |
2863 | $ls=$pt; | |
2864 | } | |
2865 | } else { | |
2866 | for $pt(@points) { | |
2867 | if (defined($ls)) { | |
2868 | i_line($self->{IMG},$ls->[0],$ls->[1],$pt->[0],$pt->[1],$color,1); | |
2869 | } | |
2870 | $ls=$pt; | |
2871 | } | |
2872 | } | |
2873 | return $self; | |
2874 | } | |
2875 | ||
2876 | sub polygon { | |
2877 | my $self = shift; | |
2878 | my ($pt,$ls,@points); | |
2879 | my $dflcl = i_color_new(0,0,0,0); | |
2880 | my %opts = (color=>$dflcl, @_); | |
2881 | ||
2882 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2883 | ||
2884 | if (exists($opts{points})) { | |
2885 | $opts{'x'} = [ map { $_->[0] } @{$opts{points}} ]; | |
2886 | $opts{'y'} = [ map { $_->[1] } @{$opts{points}} ]; | |
2887 | } | |
2888 | ||
2889 | if (!exists $opts{'x'} or !exists $opts{'y'}) { | |
2890 | $self->{ERRSTR} = 'no points array, or x and y arrays.'; return undef; | |
2891 | } | |
2892 | ||
2893 | if ($opts{'fill'}) { | |
2894 | unless (UNIVERSAL::isa($opts{'fill'}, 'Imager::Fill')) { | |
2895 | # assume it's a hash ref | |
2896 | require 'Imager/Fill.pm'; | |
2897 | unless ($opts{'fill'} = Imager::Fill->new(%{$opts{'fill'}})) { | |
2898 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2899 | return undef; | |
2900 | } | |
2901 | } | |
2902 | i_poly_aa_cfill($self->{IMG}, $opts{'x'}, $opts{'y'}, | |
2903 | $opts{'fill'}{'fill'}); | |
2904 | } | |
2905 | else { | |
2906 | my $color = _color($opts{'color'}); | |
2907 | unless ($color) { | |
2908 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2909 | return; | |
2910 | } | |
2911 | i_poly_aa($self->{IMG}, $opts{'x'}, $opts{'y'}, $color); | |
2912 | } | |
2913 | ||
2914 | return $self; | |
2915 | } | |
2916 | ||
2917 | ||
2918 | # this the multipoint bezier curve | |
2919 | # this is here more for testing that actual usage since | |
2920 | # this is not a good algorithm. Usually the curve would be | |
2921 | # broken into smaller segments and each done individually. | |
2922 | ||
2923 | sub polybezier { | |
2924 | my $self=shift; | |
2925 | my ($pt,$ls,@points); | |
2926 | my $dflcl=i_color_new(0,0,0,0); | |
2927 | my %opts=(color=>$dflcl,@_); | |
2928 | ||
2929 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
2930 | ||
2931 | if (exists $opts{points}) { | |
2932 | $opts{'x'}=map { $_->[0]; } @{$opts{'points'}}; | |
2933 | $opts{'y'}=map { $_->[1]; } @{$opts{'points'}}; | |
2934 | } | |
2935 | ||
2936 | unless ( @{$opts{'x'}} and @{$opts{'x'}} == @{$opts{'y'}} ) { | |
2937 | $self->{ERRSTR}='Missing or invalid points.'; | |
2938 | return; | |
2939 | } | |
2940 | ||
2941 | my $color = _color($opts{'color'}); | |
2942 | unless ($color) { | |
2943 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2944 | return; | |
2945 | } | |
2946 | i_bezier_multi($self->{IMG},$opts{'x'},$opts{'y'},$color); | |
2947 | return $self; | |
2948 | } | |
2949 | ||
2950 | sub flood_fill { | |
2951 | my $self = shift; | |
2952 | my %opts = ( color=>Imager::Color->new(255, 255, 255), @_ ); | |
2953 | my $rc; | |
2954 | ||
2955 | unless (exists $opts{'x'} && exists $opts{'y'}) { | |
2956 | $self->{ERRSTR} = "missing seed x and y parameters"; | |
2957 | return undef; | |
2958 | } | |
2959 | ||
2960 | if ($opts{border}) { | |
2961 | my $border = _color($opts{border}); | |
2962 | unless ($border) { | |
2963 | $self->_set_error($Imager::ERRSTR); | |
2964 | return; | |
2965 | } | |
2966 | if ($opts{fill}) { | |
2967 | unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) { | |
2968 | # assume it's a hash ref | |
2969 | require Imager::Fill; | |
2970 | unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) { | |
2971 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2972 | return; | |
2973 | } | |
2974 | } | |
2975 | $rc = i_flood_cfill_border($self->{IMG}, $opts{'x'}, $opts{'y'}, | |
2976 | $opts{fill}{fill}, $border); | |
2977 | } | |
2978 | else { | |
2979 | my $color = _color($opts{'color'}); | |
2980 | unless ($color) { | |
2981 | $self->{ERRSTR} = $Imager::ERRSTR; | |
2982 | return; | |
2983 | } | |
2984 | $rc = i_flood_fill_border($self->{IMG}, $opts{'x'}, $opts{'y'}, | |
2985 | $color, $border); | |
2986 | } | |
2987 | if ($rc) { | |
2988 | return $self; | |
2989 | } | |
2990 | else { | |
2991 | $self->{ERRSTR} = $self->_error_as_msg(); | |
2992 | return; | |
2993 | } | |
2994 | } | |
2995 | else { | |
2996 | if ($opts{fill}) { | |
2997 | unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) { | |
2998 | # assume it's a hash ref | |
2999 | require 'Imager/Fill.pm'; | |
3000 | unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) { | |
3001 | $self->{ERRSTR} = $Imager::ERRSTR; | |
3002 | return; | |
3003 | } | |
3004 | } | |
3005 | $rc = i_flood_cfill($self->{IMG}, $opts{'x'}, $opts{'y'}, $opts{fill}{fill}); | |
3006 | } | |
3007 | else { | |
3008 | my $color = _color($opts{'color'}); | |
3009 | unless ($color) { | |
3010 | $self->{ERRSTR} = $Imager::ERRSTR; | |
3011 | return; | |
3012 | } | |
3013 | $rc = i_flood_fill($self->{IMG}, $opts{'x'}, $opts{'y'}, $color); | |
3014 | } | |
3015 | if ($rc) { | |
3016 | return $self; | |
3017 | } | |
3018 | else { | |
3019 | $self->{ERRSTR} = $self->_error_as_msg(); | |
3020 | return; | |
3021 | } | |
3022 | } | |
3023 | } | |
3024 | ||
3025 | sub setpixel { | |
3026 | my $self = shift; | |
3027 | ||
3028 | my %opts = ( color=>$self->{fg} || NC(255, 255, 255), @_); | |
3029 | ||
3030 | unless (exists $opts{'x'} && exists $opts{'y'}) { | |
3031 | $self->{ERRSTR} = 'missing x and y parameters'; | |
3032 | return undef; | |
3033 | } | |
3034 | ||
3035 | my $x = $opts{'x'}; | |
3036 | my $y = $opts{'y'}; | |
3037 | my $color = _color($opts{color}) | |
3038 | or return undef; | |
3039 | if (ref $x && ref $y) { | |
3040 | unless (@$x == @$y) { | |
3041 | $self->{ERRSTR} = 'length of x and y mismatch'; | |
3042 | return; | |
3043 | } | |
3044 | my $set = 0; | |
3045 | if ($color->isa('Imager::Color')) { | |
3046 | for my $i (0..$#{$opts{'x'}}) { | |
3047 | i_ppix($self->{IMG}, $x->[$i], $y->[$i], $color) | |
3048 | or ++$set; | |
3049 | } | |
3050 | } | |
3051 | else { | |
3052 | for my $i (0..$#{$opts{'x'}}) { | |
3053 | i_ppixf($self->{IMG}, $x->[$i], $y->[$i], $color) | |
3054 | or ++$set; | |
3055 | } | |
3056 | } | |
3057 | $set or return; | |
3058 | return $set; | |
3059 | } | |
3060 | else { | |
3061 | if ($color->isa('Imager::Color')) { | |
3062 | i_ppix($self->{IMG}, $x, $y, $color) | |
3063 | and return; | |
3064 | } | |
3065 | else { | |
3066 | i_ppixf($self->{IMG}, $x, $y, $color) | |
3067 | and return; | |
3068 | } | |
3069 | } | |
3070 | ||
3071 | $self; | |
3072 | } | |
3073 | ||
3074 | sub getpixel { | |
3075 | my $self = shift; | |
3076 | ||
3077 | my %opts = ( "type"=>'8bit', @_); | |
3078 | ||
3079 | unless (exists $opts{'x'} && exists $opts{'y'}) { | |
3080 | $self->{ERRSTR} = 'missing x and y parameters'; | |
3081 | return undef; | |
3082 | } | |
3083 | ||
3084 | my $x = $opts{'x'}; | |
3085 | my $y = $opts{'y'}; | |
3086 | if (ref $x && ref $y) { | |
3087 | unless (@$x == @$y) { | |
3088 | $self->{ERRSTR} = 'length of x and y mismatch'; | |
3089 | return undef; | |
3090 | } | |
3091 | my @result; | |
3092 | if ($opts{"type"} eq '8bit') { | |
3093 | for my $i (0..$#{$opts{'x'}}) { | |
3094 | push(@result, i_get_pixel($self->{IMG}, $x->[$i], $y->[$i])); | |
3095 | } | |
3096 | } | |
3097 | else { | |
3098 | for my $i (0..$#{$opts{'x'}}) { | |
3099 | push(@result, i_gpixf($self->{IMG}, $x->[$i], $y->[$i])); | |
3100 | } | |
3101 | } | |
3102 | return wantarray ? @result : \@result; | |
3103 | } | |
3104 | else { | |
3105 | if ($opts{"type"} eq '8bit') { | |
3106 | return i_get_pixel($self->{IMG}, $x, $y); | |
3107 | } | |
3108 | else { | |
3109 | return i_gpixf($self->{IMG}, $x, $y); | |
3110 | } | |
3111 | } | |
3112 | ||
3113 | $self; | |
3114 | } | |
3115 | ||
3116 | sub getscanline { | |
3117 | my $self = shift; | |
3118 | my %opts = ( type => '8bit', x=>0, @_); | |
3119 | ||
3120 | $self->_valid_image or return; | |
3121 | ||
3122 | defined $opts{width} or $opts{width} = $self->getwidth - $opts{x}; | |
3123 | ||
3124 | unless (defined $opts{'y'}) { | |
3125 | $self->_set_error("missing y parameter"); | |
3126 | return; | |
3127 | } | |
3128 | ||
3129 | if ($opts{type} eq '8bit') { | |
3130 | return i_glin($self->{IMG}, $opts{x}, $opts{x}+$opts{width}, | |
3131 | $opts{'y'}); | |
3132 | } | |
3133 | elsif ($opts{type} eq 'float') { | |
3134 | return i_glinf($self->{IMG}, $opts{x}, $opts{x}+$opts{width}, | |
3135 | $opts{'y'}); | |
3136 | } | |
3137 | elsif ($opts{type} eq 'index') { | |
3138 | unless (i_img_type($self->{IMG})) { | |
3139 | $self->_set_error("type => index only valid on paletted images"); | |
3140 | return; | |
3141 | } | |
3142 | return i_gpal($self->{IMG}, $opts{x}, $opts{x} + $opts{width}, | |
3143 | $opts{'y'}); | |
3144 | } | |
3145 | else { | |
3146 | $self->_set_error("invalid type parameter - must be '8bit' or 'float'"); | |
3147 | return; | |
3148 | } | |
3149 | } | |
3150 | ||
3151 | sub setscanline { | |
3152 | my $self = shift; | |
3153 | my %opts = ( x=>0, @_); | |
3154 | ||
3155 | $self->_valid_image or return; | |
3156 | ||
3157 | unless (defined $opts{'y'}) { | |
3158 | $self->_set_error("missing y parameter"); | |
3159 | return; | |
3160 | } | |
3161 | ||
3162 | if (!$opts{type}) { | |
3163 | if (ref $opts{pixels} && @{$opts{pixels}}) { | |
3164 | # try to guess the type | |
3165 | if ($opts{pixels}[0]->isa('Imager::Color')) { | |
3166 | $opts{type} = '8bit'; | |
3167 | } | |
3168 | elsif ($opts{pixels}[0]->isa('Imager::Color::Float')) { | |
3169 | $opts{type} = 'float'; | |
3170 | } | |
3171 | else { | |
3172 | $self->_set_error("missing type parameter and could not guess from pixels"); | |
3173 | return; | |
3174 | } | |
3175 | } | |
3176 | else { | |
3177 | # default | |
3178 | $opts{type} = '8bit'; | |
3179 | } | |
3180 | } | |
3181 | ||
3182 | if ($opts{type} eq '8bit') { | |
3183 | if (ref $opts{pixels}) { | |
3184 | return i_plin($self->{IMG}, $opts{x}, $opts{'y'}, @{$opts{pixels}}); | |
3185 | } | |
3186 | else { | |
3187 | return i_plin($self->{IMG}, $opts{x}, $opts{'y'}, $opts{pixels}); | |
3188 | } | |
3189 | } | |
3190 | elsif ($opts{type} eq 'float') { | |
3191 | if (ref $opts{pixels}) { | |
3192 | return i_plinf($self->{IMG}, $opts{x}, $opts{'y'}, @{$opts{pixels}}); | |
3193 | } | |
3194 | else { | |
3195 | return i_plinf($self->{IMG}, $opts{x}, $opts{'y'}, $opts{pixels}); | |
3196 | } | |
3197 | } | |
3198 | elsif ($opts{type} eq 'index') { | |
3199 | if (ref $opts{pixels}) { | |
3200 | return i_ppal($self->{IMG}, $opts{x}, $opts{'y'}, @{$opts{pixels}}); | |
3201 | } | |
3202 | else { | |
3203 | return i_ppal_p($self->{IMG}, $opts{x}, $opts{'y'}, $opts{pixels}); | |
3204 | } | |
3205 | } | |
3206 | else { | |
3207 | $self->_set_error("invalid type parameter - must be '8bit' or 'float'"); | |
3208 | return; | |
3209 | } | |
3210 | } | |
3211 | ||
3212 | sub getsamples { | |
3213 | my $self = shift; | |
3214 | my %opts = ( type => '8bit', x=>0, offset => 0, @_); | |
3215 | ||
3216 | defined $opts{width} or $opts{width} = $self->getwidth - $opts{x}; | |
3217 | ||
3218 | unless (defined $opts{'y'}) { | |
3219 | $self->_set_error("missing y parameter"); | |
3220 | return; | |
3221 | } | |
3222 | ||
3223 | unless ($opts{channels}) { | |
3224 | $opts{channels} = [ 0 .. $self->getchannels()-1 ]; | |
3225 | } | |
3226 | ||
3227 | if ($opts{target}) { | |
3228 | my $target = $opts{target}; | |
3229 | my $offset = $opts{offset}; | |
3230 | if ($opts{type} eq '8bit') { | |
3231 | my @samples = i_gsamp($self->{IMG}, $opts{x}, $opts{x}+$opts{width}, | |
3232 | $opts{y}, @{$opts{channels}}) | |
3233 | or return; | |
3234 | @{$target}{$offset .. $offset + @samples - 1} = @samples; | |
3235 | return scalar(@samples); | |
3236 | } | |
3237 | elsif ($opts{type} eq 'float') { | |
3238 | my @samples = i_gsampf($self->{IMG}, $opts{x}, $opts{x}+$opts{width}, | |
3239 | $opts{y}, @{$opts{channels}}); | |
3240 | @{$target}{$offset .. $offset + @samples - 1} = @samples; | |
3241 | return scalar(@samples); | |
3242 | } | |
3243 | elsif ($opts{type} =~ /^(\d+)bit$/) { | |
3244 | my $bits = $1; | |
3245 | ||
3246 | my @data; | |
3247 | my $count = i_gsamp_bits($self->{IMG}, $opts{x}, $opts{x}+$opts{width}, | |
3248 | $opts{y}, $bits, $target, | |
3249 | $offset, @{$opts{channels}}); | |
3250 | unless (defined $count) { | |
3251 | $self->_set_error(Imager->_error_as_msg); | |
3252 | return; | |
3253 | } | |
3254 | ||
3255 | return $count; | |
3256 | } | |
3257 | else { | |
3258 | $self->_set_error("invalid type parameter - must be '8bit' or 'float'"); | |
3259 | return; | |
3260 | } | |
3261 | } | |
3262 | else { | |
3263 | if ($opts{type} eq '8bit') { | |
3264 | return i_gsamp($self->{IMG}, $opts{x}, $opts{x}+$opts{width}, | |
3265 | $opts{y}, @{$opts{channels}}); | |
3266 | } | |
3267 | elsif ($opts{type} eq 'float') { | |
3268 | return i_gsampf($self->{IMG}, $opts{x}, $opts{x}+$opts{width}, | |
3269 | $opts{y}, @{$opts{channels}}); | |
3270 | } | |
3271 | elsif ($opts{type} =~ /^(\d+)bit$/) { | |
3272 | my $bits = $1; | |
3273 | ||
3274 | my @data; | |
3275 | i_gsamp_bits($self->{IMG}, $opts{x}, $opts{x}+$opts{width}, | |
3276 | $opts{y}, $bits, \@data, 0, @{$opts{channels}}) | |
3277 | or return; | |
3278 | return @data; | |
3279 | } | |
3280 | else { | |
3281 | $self->_set_error("invalid type parameter - must be '8bit' or 'float'"); | |
3282 | return; | |
3283 | } | |
3284 | } | |
3285 | } | |
3286 | ||
3287 | sub setsamples { | |
3288 | my $self = shift; | |
3289 | my %opts = ( x => 0, offset => 0, @_ ); | |
3290 | ||
3291 | unless ($self->{IMG}) { | |
3292 | $self->_set_error('setsamples: empty input image'); | |
3293 | return; | |
3294 | } | |
3295 | ||
3296 | unless(defined $opts{data} && ref $opts{data}) { | |
3297 | $self->_set_error('setsamples: data parameter missing or invalid'); | |
3298 | return; | |
3299 | } | |
3300 | ||
3301 | unless ($opts{channels}) { | |
3302 | $opts{channels} = [ 0 .. $self->getchannels()-1 ]; | |
3303 | } | |
3304 | ||
3305 | unless ($opts{type} && $opts{type} =~ /^(\d+)bit$/) { | |
3306 | $self->_set_error('setsamples: type parameter missing or invalid'); | |
3307 | return; | |
3308 | } | |
3309 | my $bits = $1; | |
3310 | ||
3311 | unless (defined $opts{width}) { | |
3312 | $opts{width} = $self->getwidth() - $opts{x}; | |
3313 | } | |
3314 | ||
3315 | my $count = i_psamp_bits($self->{IMG}, $opts{x}, $opts{y}, $bits, | |
3316 | $opts{channels}, $opts{data}, $opts{offset}, | |
3317 | $opts{width}); | |
3318 | unless (defined $count) { | |
3319 | $self->_set_error(Imager->_error_as_msg); | |
3320 | return; | |
3321 | } | |
3322 | ||
3323 | return $count; | |
3324 | } | |
3325 | ||
3326 | # make an identity matrix of the given size | |
3327 | sub _identity { | |
3328 | my ($size) = @_; | |
3329 | ||
3330 | my $matrix = [ map { [ (0) x $size ] } 1..$size ]; | |
3331 | for my $c (0 .. ($size-1)) { | |
3332 | $matrix->[$c][$c] = 1; | |
3333 | } | |
3334 | return $matrix; | |
3335 | } | |
3336 | ||
3337 | # general function to convert an image | |
3338 | sub convert { | |
3339 | my ($self, %opts) = @_; | |
3340 | my $matrix; | |
3341 | ||
3342 | unless (defined wantarray) { | |
3343 | my @caller = caller; | |
3344 | warn "convert() called in void context - convert() returns the converted image at $caller[1] line $caller[2]\n"; | |
3345 | return; | |
3346 | } | |
3347 | ||
3348 | # the user can either specify a matrix or preset | |
3349 | # the matrix overrides the preset | |
3350 | if (!exists($opts{matrix})) { | |
3351 | unless (exists($opts{preset})) { | |
3352 | $self->{ERRSTR} = "convert() needs a matrix or preset"; | |
3353 | return; | |
3354 | } | |
3355 | else { | |
3356 | if ($opts{preset} eq 'gray' || $opts{preset} eq 'grey') { | |
3357 | # convert to greyscale, keeping the alpha channel if any | |
3358 | if ($self->getchannels == 3) { | |
3359 | $matrix = [ [ 0.222, 0.707, 0.071 ] ]; | |
3360 | } | |
3361 | elsif ($self->getchannels == 4) { | |
3362 | # preserve the alpha channel | |
3363 | $matrix = [ [ 0.222, 0.707, 0.071, 0 ], | |
3364 | [ 0, 0, 0, 1 ] ]; | |
3365 | } | |
3366 | else { | |
3367 | # an identity | |
3368 | $matrix = _identity($self->getchannels); | |
3369 | } | |
3370 | } | |
3371 | elsif ($opts{preset} eq 'noalpha') { | |
3372 | # strip the alpha channel | |
3373 | if ($self->getchannels == 2 or $self->getchannels == 4) { | |
3374 | $matrix = _identity($self->getchannels); | |
3375 | pop(@$matrix); # lose the alpha entry | |
3376 | } | |
3377 | else { | |
3378 | $matrix = _identity($self->getchannels); | |
3379 | } | |
3380 | } | |
3381 | elsif ($opts{preset} eq 'red' || $opts{preset} eq 'channel0') { | |
3382 | # extract channel 0 | |
3383 | $matrix = [ [ 1 ] ]; | |
3384 | } | |
3385 | elsif ($opts{preset} eq 'green' || $opts{preset} eq 'channel1') { | |
3386 | $matrix = [ [ 0, 1 ] ]; | |
3387 | } | |
3388 | elsif ($opts{preset} eq 'blue' || $opts{preset} eq 'channel2') { | |
3389 | $matrix = [ [ 0, 0, 1 ] ]; | |
3390 | } | |
3391 | elsif ($opts{preset} eq 'alpha') { | |
3392 | if ($self->getchannels == 2 or $self->getchannels == 4) { | |
3393 | $matrix = [ [ (0) x ($self->getchannels-1), 1 ] ]; | |
3394 | } | |
3395 | else { | |
3396 | # the alpha is just 1 <shrug> | |
3397 | $matrix = [ [ (0) x $self->getchannels, 1 ] ]; | |
3398 | } | |
3399 | } | |
3400 | elsif ($opts{preset} eq 'rgb') { | |
3401 | if ($self->getchannels == 1) { | |
3402 | $matrix = [ [ 1 ], [ 1 ], [ 1 ] ]; | |
3403 | } | |
3404 | elsif ($self->getchannels == 2) { | |
3405 | # preserve the alpha channel | |
3406 | $matrix = [ [ 1, 0 ], [ 1, 0 ], [ 1, 0 ], [ 0, 1 ] ]; | |
3407 | } | |
3408 | else { | |
3409 | $matrix = _identity($self->getchannels); | |
3410 | } | |
3411 | } | |
3412 | elsif ($opts{preset} eq 'addalpha') { | |
3413 | if ($self->getchannels == 1) { | |
3414 | $matrix = _identity(2); | |
3415 | } | |
3416 | elsif ($self->getchannels == 3) { | |
3417 | $matrix = _identity(4); | |
3418 | } | |
3419 | else { | |
3420 | $matrix = _identity($self->getchannels); | |
3421 | } | |
3422 | } | |
3423 | else { | |
3424 | $self->{ERRSTR} = "Unknown convert preset $opts{preset}"; | |
3425 | return undef; | |
3426 | } | |
3427 | } | |
3428 | } | |
3429 | else { | |
3430 | $matrix = $opts{matrix}; | |
3431 | } | |
3432 | ||
3433 | my $new = Imager->new; | |
3434 | $new->{IMG} = i_convert($self->{IMG}, $matrix); | |
3435 | unless ($new->{IMG}) { | |
3436 | # most likely a bad matrix | |
3437 | $self->{ERRSTR} = _error_as_msg(); | |
3438 | return undef; | |
3439 | } | |
3440 | return $new; | |
3441 | } | |
3442 | ||
3443 | ||
3444 | # general function to map an image through lookup tables | |
3445 | ||
3446 | sub map { | |
3447 | my ($self, %opts) = @_; | |
3448 | my @chlist = qw( red green blue alpha ); | |
3449 | ||
3450 | if (!exists($opts{'maps'})) { | |
3451 | # make maps from channel maps | |
3452 | my $chnum; | |
3453 | for $chnum (0..$#chlist) { | |
3454 | if (exists $opts{$chlist[$chnum]}) { | |
3455 | $opts{'maps'}[$chnum] = $opts{$chlist[$chnum]}; | |
3456 | } elsif (exists $opts{'all'}) { | |
3457 | $opts{'maps'}[$chnum] = $opts{'all'}; | |
3458 | } | |
3459 | } | |
3460 | } | |
3461 | if ($opts{'maps'} and $self->{IMG}) { | |
3462 | i_map($self->{IMG}, $opts{'maps'} ); | |
3463 | } | |
3464 | return $self; | |
3465 | } | |
3466 | ||
3467 | sub difference { | |
3468 | my ($self, %opts) = @_; | |
3469 | ||
3470 | defined $opts{mindist} or $opts{mindist} = 0; | |
3471 | ||
3472 | defined $opts{other} | |
3473 | or return $self->_set_error("No 'other' parameter supplied"); | |
3474 | defined $opts{other}{IMG} | |
3475 | or return $self->_set_error("No image data in 'other' image"); | |
3476 | ||
3477 | $self->{IMG} | |
3478 | or return $self->_set_error("No image data"); | |
3479 | ||
3480 | my $result = Imager->new; | |
3481 | $result->{IMG} = i_diff_image($self->{IMG}, $opts{other}{IMG}, | |
3482 | $opts{mindist}) | |
3483 | or return $self->_set_error($self->_error_as_msg()); | |
3484 | ||
3485 | return $result; | |
3486 | } | |
3487 | ||
3488 | # destructive border - image is shrunk by one pixel all around | |
3489 | ||
3490 | sub border { | |
3491 | my ($self,%opts)=@_; | |
3492 | my($tx,$ty)=($self->getwidth()-1,$self->getheight()-1); | |
3493 | $self->polyline('x'=>[0,$tx,$tx,0,0],'y'=>[0,0,$ty,$ty,0],%opts); | |
3494 | } | |
3495 | ||
3496 | ||
3497 | # Get the width of an image | |
3498 | ||
3499 | sub getwidth { | |
3500 | my $self = shift; | |
3501 | if (!defined($self->{IMG})) { $self->{ERRSTR} = 'image is empty'; return undef; } | |
3502 | return (i_img_info($self->{IMG}))[0]; | |
3503 | } | |
3504 | ||
3505 | # Get the height of an image | |
3506 | ||
3507 | sub getheight { | |
3508 | my $self = shift; | |
3509 | if (!defined($self->{IMG})) { $self->{ERRSTR} = 'image is empty'; return undef; } | |
3510 | return (i_img_info($self->{IMG}))[1]; | |
3511 | } | |
3512 | ||
3513 | # Get number of channels in an image | |
3514 | ||
3515 | sub getchannels { | |
3516 | my $self = shift; | |
3517 | if (!defined($self->{IMG})) { $self->{ERRSTR} = 'image is empty'; return undef; } | |
3518 | return i_img_getchannels($self->{IMG}); | |
3519 | } | |
3520 | ||
3521 | # Get channel mask | |
3522 | ||
3523 | sub getmask { | |
3524 | my $self = shift; | |
3525 | if (!defined($self->{IMG})) { $self->{ERRSTR} = 'image is empty'; return undef; } | |
3526 | return i_img_getmask($self->{IMG}); | |
3527 | } | |
3528 | ||
3529 | # Set channel mask | |
3530 | ||
3531 | sub setmask { | |
3532 | my $self = shift; | |
3533 | my %opts = @_; | |
3534 | if (!defined($self->{IMG})) { | |
3535 | $self->{ERRSTR} = 'image is empty'; | |
3536 | return undef; | |
3537 | } | |
3538 | unless (defined $opts{mask}) { | |
3539 | $self->_set_error("mask parameter required"); | |
3540 | return; | |
3541 | } | |
3542 | i_img_setmask( $self->{IMG} , $opts{mask} ); | |
3543 | ||
3544 | 1; | |
3545 | } | |
3546 | ||
3547 | # Get number of colors in an image | |
3548 | ||
3549 | sub getcolorcount { | |
3550 | my $self=shift; | |
3551 | my %opts=('maxcolors'=>2**30,@_); | |
3552 | if (!defined($self->{IMG})) { $self->{ERRSTR}='image is empty'; return undef; } | |
3553 | my $rc=i_count_colors($self->{IMG},$opts{'maxcolors'}); | |
3554 | return ($rc==-1? undef : $rc); | |
3555 | } | |
3556 | ||
3557 | # Returns a reference to a hash. The keys are colour named (packed) and the | |
3558 | # values are the number of pixels in this colour. | |
3559 | sub getcolorusagehash { | |
3560 | my $self = shift; | |
3561 | ||
3562 | my %opts = ( maxcolors => 2**30, @_ ); | |
3563 | my $max_colors = $opts{maxcolors}; | |
3564 | unless (defined $max_colors && $max_colors > 0) { | |
3565 | $self->_set_error('maxcolors must be a positive integer'); | |
3566 | return; | |
3567 | } | |
3568 | ||
3569 | unless (defined $self->{IMG}) { | |
3570 | $self->_set_error('empty input image'); | |
3571 | return; | |
3572 | } | |
3573 | ||
3574 | my $channels= $self->getchannels; | |
3575 | # We don't want to look at the alpha channel, because some gifs using it | |
3576 | # doesn't define it for every colour (but only for some) | |
3577 | $channels -= 1 if $channels == 2 or $channels == 4; | |
3578 | my %color_use; | |
3579 | my $height = $self->getheight; | |
3580 | for my $y (0 .. $height - 1) { | |
3581 | my $colors = $self->getsamples('y' => $y, channels => [ 0 .. $channels - 1 ]); | |
3582 | while (length $colors) { | |
3583 | $color_use{ substr($colors, 0, $channels, '') }++; | |
3584 | } | |
3585 | keys %color_use > $max_colors | |
3586 | and return; | |
3587 | } | |
3588 | return \%color_use; | |
3589 | } | |
3590 | ||
3591 | # This will return a ordered array of the colour usage. Kind of the sorted | |
3592 | # version of the values of the hash returned by getcolorusagehash. | |
3593 | # You might want to add safety checks and change the names, etc... | |
3594 | sub getcolorusage { | |
3595 | my $self = shift; | |
3596 | ||
3597 | my %opts = ( maxcolors => 2**30, @_ ); | |
3598 | my $max_colors = $opts{maxcolors}; | |
3599 | unless (defined $max_colors && $max_colors > 0) { | |
3600 | $self->_set_error('maxcolors must be a positive integer'); | |
3601 | return; | |
3602 | } | |
3603 | ||
3604 | unless (defined $self->{IMG}) { | |
3605 | $self->_set_error('empty input image'); | |
3606 | return undef; | |
3607 | } | |
3608 | ||
3609 | return i_get_anonymous_color_histo($self->{IMG}, $max_colors); | |
3610 | } | |
3611 | ||
3612 | # draw string to an image | |
3613 | ||
3614 | sub string { | |
3615 | my $self = shift; | |
3616 | unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; } | |
3617 | ||
3618 | my %input=('x'=>0, 'y'=>0, @_); | |
3619 | defined($input{string}) or $input{string} = $input{text}; | |
3620 | ||
3621 | unless(defined $input{string}) { | |
3622 | $self->{ERRSTR}="missing required parameter 'string'"; | |
3623 | return; | |
3624 | } | |
3625 | ||
3626 | unless($input{font}) { | |
3627 | $self->{ERRSTR}="missing required parameter 'font'"; | |
3628 | return; | |
3629 | } | |
3630 | ||
3631 | unless ($input{font}->draw(image=>$self, %input)) { | |
3632 | return; | |
3633 | } | |
3634 | ||
3635 | return $self; | |
3636 | } | |
3637 | ||
3638 | sub align_string { | |
3639 | my $self = shift; | |
3640 | ||
3641 | my $img; | |
3642 | if (ref $self) { | |
3643 | unless ($self->{IMG}) { | |
3644 | $self->{ERRSTR}='empty input image'; | |
3645 | return; | |
3646 | } | |
3647 | $img = $self; | |
3648 | } | |
3649 | else { | |
3650 | $img = undef; | |
3651 | } | |
3652 | ||
3653 | my %input=('x'=>0, 'y'=>0, @_); | |
3654 | $input{string}||=$input{text}; | |
3655 | ||
3656 | unless(exists $input{string}) { | |
3657 | $self->_set_error("missing required parameter 'string'"); | |
3658 | return; | |
3659 | } | |
3660 | ||
3661 | unless($input{font}) { | |
3662 | $self->_set_error("missing required parameter 'font'"); | |
3663 | return; | |
3664 | } | |
3665 | ||
3666 | my @result; | |
3667 | unless (@result = $input{font}->align(image=>$img, %input)) { | |
3668 | return; | |
3669 | } | |
3670 | ||
3671 | return wantarray ? @result : $result[0]; | |
3672 | } | |
3673 | ||
3674 | my @file_limit_names = qw/width height bytes/; | |
3675 | ||
3676 | sub set_file_limits { | |
3677 | shift; | |
3678 | ||
3679 | my %opts = @_; | |
3680 | my %values; | |
3681 | ||
3682 | if ($opts{reset}) { | |
3683 | @values{@file_limit_names} = (0) x @file_limit_names; | |
3684 | } | |
3685 | else { | |
3686 | @values{@file_limit_names} = i_get_image_file_limits(); | |
3687 | } | |
3688 | ||
3689 | for my $key (keys %values) { | |
3690 | defined $opts{$key} and $values{$key} = $opts{$key}; | |
3691 | } | |
3692 | ||
3693 | i_set_image_file_limits($values{width}, $values{height}, $values{bytes}); | |
3694 | } | |
3695 | ||
3696 | sub get_file_limits { | |
3697 | i_get_image_file_limits(); | |
3698 | } | |
3699 | ||
3700 | # Shortcuts that can be exported | |
3701 | ||
3702 | sub newcolor { Imager::Color->new(@_); } | |
3703 | sub newfont { Imager::Font->new(@_); } | |
3704 | sub NCF { Imager::Color::Float->new(@_) } | |
3705 | ||
3706 | *NC=*newcolour=*newcolor; | |
3707 | *NF=*newfont; | |
3708 | ||
3709 | *open=\&read; | |
3710 | *circle=\&arc; | |
3711 | ||
3712 | ||
3713 | #### Utility routines | |
3714 | ||
3715 | sub errstr { | |
3716 | ref $_[0] ? $_[0]->{ERRSTR} : $ERRSTR | |
3717 | } | |
3718 | ||
3719 | sub _set_error { | |
3720 | my ($self, $msg) = @_; | |
3721 | ||
3722 | if (ref $self) { | |
3723 | $self->{ERRSTR} = $msg; | |
3724 | } | |
3725 | else { | |
3726 | $ERRSTR = $msg; | |
3727 | } | |
3728 | return; | |
3729 | } | |
3730 | ||
3731 | # Default guess for the type of an image from extension | |
3732 | ||
3733 | sub def_guess_type { | |
3734 | my $name=lc(shift); | |
3735 | my $ext; | |
3736 | $ext=($name =~ m/\.([^\.]+)$/)[0]; | |
3737 | return 'tiff' if ($ext =~ m/^tiff?$/); | |
3738 | return 'jpeg' if ($ext =~ m/^jpe?g$/); | |
3739 | return 'pnm' if ($ext =~ m/^p[pgb]m$/); | |
3740 | return 'png' if ($ext eq "png"); | |
3741 | return 'bmp' if ($ext eq "bmp" || $ext eq "dib"); | |
3742 | return 'tga' if ($ext eq "tga"); | |
3743 | return 'sgi' if ($ext eq "rgb" || $ext eq "bw" || $ext eq "sgi" || $ext eq "rgba"); | |
3744 | return 'gif' if ($ext eq "gif"); | |
3745 | return 'raw' if ($ext eq "raw"); | |
3746 | return lc $ext; # best guess | |
3747 | return (); | |
3748 | } | |
3749 | ||
3750 | sub combines { | |
3751 | return @combine_types; | |
3752 | } | |
3753 | ||
3754 | # get the minimum of a list | |
3755 | ||
3756 | sub _min { | |
3757 | my $mx=shift; | |
3758 | for(@_) { if ($_<$mx) { $mx=$_; }} | |
3759 | return $mx; | |
3760 | } | |
3761 | ||
3762 | # get the maximum of a list | |
3763 | ||
3764 | sub _max { | |
3765 | my $mx=shift; | |
3766 | for(@_) { if ($_>$mx) { $mx=$_; }} | |
3767 | return $mx; | |
3768 | } | |
3769 | ||
3770 | # string stuff for iptc headers | |
3771 | ||
3772 | sub _clean { | |
3773 | my($str)=$_[0]; | |
3774 | $str = substr($str,3); | |
3775 | $str =~ s/[\n\r]//g; | |
3776 | $str =~ s/\s+/ /g; | |
3777 | $str =~ s/^\s//; | |
3778 | $str =~ s/\s$//; | |
3779 | return $str; | |
3780 | } | |
3781 | ||
3782 | # A little hack to parse iptc headers. | |
3783 | ||
3784 | sub parseiptc { | |
3785 | my $self=shift; | |
3786 | my(@sar,$item,@ar); | |
3787 | my($caption,$photogr,$headln,$credit); | |
3788 | ||
3789 | my $str=$self->{IPTCRAW}; | |
3790 | ||
3791 | defined $str | |
3792 | or return; | |
3793 | ||
3794 | @ar=split(/8BIM/,$str); | |
3795 | ||
3796 | my $i=0; | |
3797 | foreach (@ar) { | |
3798 | if (/^\004\004/) { | |
3799 | @sar=split(/\034\002/); | |
3800 | foreach $item (@sar) { | |
3801 | if ($item =~ m/^x/) { | |
3802 | $caption = _clean($item); | |
3803 | $i++; | |
3804 | } | |
3805 | if ($item =~ m/^P/) { | |
3806 | $photogr = _clean($item); | |
3807 | $i++; | |
3808 | } | |
3809 | if ($item =~ m/^i/) { | |
3810 | $headln = _clean($item); | |
3811 | $i++; | |
3812 | } | |
3813 | if ($item =~ m/^n/) { | |
3814 | $credit = _clean($item); | |
3815 | $i++; | |
3816 | } | |
3817 | } | |
3818 | } | |
3819 | } | |
3820 | return (caption=>$caption,photogr=>$photogr,headln=>$headln,credit=>$credit); | |
3821 | } | |
3822 | ||
3823 | sub Inline { | |
3824 | my ($lang) = @_; | |
3825 | ||
3826 | $lang eq 'C' | |
3827 | or die "Only C language supported"; | |
3828 | ||
3829 | require Imager::ExtUtils; | |
3830 | return Imager::ExtUtils->inline_config; | |
3831 | } | |
3832 | ||
3833 | 1; | |
3834 | __END__ | |
3835 | # Below is the stub of documentation for your module. You better edit it! | |
3836 | ||
3837 | =head1 NAME | |
3838 | ||
3839 | Imager - Perl extension for Generating 24 bit Images | |
3840 | ||
3841 | =head1 SYNOPSIS | |
3842 | ||
3843 | # Thumbnail example | |
3844 | ||
3845 | #!/usr/bin/perl -w | |
3846 | use strict; | |
3847 | use Imager; | |
3848 | ||
3849 | die "Usage: thumbmake.pl filename\n" if !-f $ARGV[0]; | |
3850 | my $file = shift; | |
3851 | ||
3852 | my $format; | |
3853 | ||
3854 | my $img = Imager->new(); | |
3855 | # see Imager::Files for information on the read() method | |
3856 | $img->read(file=>$file) or die $img->errstr(); | |
3857 | ||
3858 | $file =~ s/\.[^.]*$//; | |
3859 | ||
3860 | # Create smaller version | |
3861 | # documented in Imager::Transformations | |
3862 | my $thumb = $img->scale(scalefactor=>.3); | |
3863 | ||
3864 | # Autostretch individual channels | |
3865 | $thumb->filter(type=>'autolevels'); | |
3866 | ||
3867 | # try to save in one of these formats | |
3868 | SAVE: | |
3869 | ||
3870 | for $format ( qw( png gif jpg tiff ppm ) ) { | |
3871 | # Check if given format is supported | |
3872 | if ($Imager::formats{$format}) { | |
3873 | $file.="_low.$format"; | |
3874 | print "Storing image as: $file\n"; | |
3875 | # documented in Imager::Files | |
3876 | $thumb->write(file=>$file) or | |
3877 | die $thumb->errstr; | |
3878 | last SAVE; | |
3879 | } | |
3880 | } | |
3881 | ||
3882 | =head1 DESCRIPTION | |
3883 | ||
3884 | Imager is a module for creating and altering images. It can read and | |
3885 | write various image formats, draw primitive shapes like lines,and | |
3886 | polygons, blend multiple images together in various ways, scale, crop, | |
3887 | render text and more. | |
3888 | ||
3889 | =head2 Overview of documentation | |
3890 | ||
3891 | =over | |
3892 | ||
3893 | =item * | |
3894 | ||
3895 | Imager - This document - Synopsis, Example, Table of Contents and | |
3896 | Overview. | |
3897 | ||
3898 | =item * | |
3899 | ||
3900 | L<Imager::Tutorial> - a brief introduction to Imager. | |
3901 | ||
3902 | =item * | |
3903 | ||
3904 | L<Imager::Cookbook> - how to do various things with Imager. | |
3905 | ||
3906 | =item * | |
3907 | ||
3908 | L<Imager::ImageTypes> - Basics of constructing image objects with | |
3909 | C<new()>: Direct type/virtual images, RGB(A)/paletted images, | |
3910 | 8/16/double bits/channel, color maps, channel masks, image tags, color | |
3911 | quantization. Also discusses basic image information methods. | |
3912 | ||
3913 | =item * | |
3914 | ||
3915 | L<Imager::Files> - IO interaction, reading/writing images, format | |
3916 | specific tags. | |
3917 | ||
3918 | =item * | |
3919 | ||
3920 | L<Imager::Draw> - Drawing Primitives, lines, boxes, circles, arcs, | |
3921 | flood fill. | |
3922 | ||
3923 | =item * | |
3924 | ||
3925 | L<Imager::Color> - Color specification. | |
3926 | ||
3927 | =item * | |
3928 | ||
3929 | L<Imager::Fill> - Fill pattern specification. | |
3930 | ||
3931 | =item * | |
3932 | ||
3933 | L<Imager::Font> - General font rendering, bounding boxes and font | |
3934 | metrics. | |
3935 | ||
3936 | =item * | |
3937 | ||
3938 | L<Imager::Transformations> - Copying, scaling, cropping, flipping, | |
3939 | blending, pasting, convert and map. | |
3940 | ||
3941 | =item * | |
3942 | ||
3943 | L<Imager::Engines> - Programmable transformations through | |
3944 | C<transform()>, C<transform2()> and C<matrix_transform()>. | |
3945 | ||
3946 | =item * | |
3947 | ||
3948 | L<Imager::Filters> - Filters, sharpen, blur, noise, convolve etc. and | |
3949 | filter plugins. | |
3950 | ||
3951 | =item * | |
3952 | ||
3953 | L<Imager::Expr> - Expressions for evaluation engine used by | |
3954 | transform2(). | |
3955 | ||
3956 | =item * | |
3957 | ||
3958 | L<Imager::Matrix2d> - Helper class for affine transformations. | |
3959 | ||
3960 | =item * | |
3961 | ||
3962 | L<Imager::Fountain> - Helper for making gradient profiles. | |
3963 | ||
3964 | =item * | |
3965 | ||
3966 | L<Imager::API> - using Imager's C API | |
3967 | ||
3968 | =item * | |
3969 | ||
3970 | L<Imager::APIRef> - API function reference | |
3971 | ||
3972 | =item * | |
3973 | ||
3974 | L<Imager::Inline> - using Imager's C API from Inline::C | |
3975 | ||
3976 | =item * | |
3977 | ||
3978 | L<Imager::ExtUtils> - tools to get access to Imager's C API. | |
3979 | ||
3980 | =back | |
3981 | ||
3982 | =head2 Basic Overview | |
3983 | ||
3984 | An Image object is created with C<$img = Imager-E<gt>new()>. | |
3985 | Examples: | |
3986 | ||
3987 | $img=Imager->new(); # create empty image | |
3988 | $img->read(file=>'lena.png',type=>'png') or # read image from file | |
3989 | die $img->errstr(); # give an explanation | |
3990 | # if something failed | |
3991 | ||
3992 | or if you want to create an empty image: | |
3993 | ||
3994 | $img=Imager->new(xsize=>400,ysize=>300,channels=>4); | |
3995 | ||
3996 | This example creates a completely black image of width 400 and height | |
3997 | 300 and 4 channels. | |
3998 | ||
3999 | =head1 ERROR HANDLING | |
4000 | ||
4001 | In general a method will return false when it fails, if it does use | |
4002 | the errstr() method to find out why: | |
4003 | ||
4004 | =over | |
4005 | ||
4006 | =item errstr | |
4007 | ||
4008 | Returns the last error message in that context. | |
4009 | ||
4010 | If the last error you received was from calling an object method, such | |
4011 | as read, call errstr() as an object method to find out why: | |
4012 | ||
4013 | my $image = Imager->new; | |
4014 | $image->read(file => 'somefile.gif') | |
4015 | or die $image->errstr; | |
4016 | ||
4017 | If it was a class method then call errstr() as a class method: | |
4018 | ||
4019 | my @imgs = Imager->read_multi(file => 'somefile.gif') | |
4020 | or die Imager->errstr; | |
4021 | ||
4022 | Note that in some cases object methods are implemented in terms of | |
4023 | class methods so a failing object method may set both. | |
4024 | ||
4025 | =back | |
4026 | ||
4027 | The C<Imager-E<gt>new> method is described in detail in | |
4028 | L<Imager::ImageTypes>. | |
4029 | ||
4030 | =head1 METHOD INDEX | |
4031 | ||
4032 | Where to find information on methods for Imager class objects. | |
4033 | ||
4034 | addcolors() - L<Imager::ImageTypes/addcolors> | |
4035 | ||
4036 | addtag() - L<Imager::ImageTypes/addtag> - add image tags | |
4037 | ||
4038 | align_string() - L<Imager::Draw/align_string> | |
4039 | ||
4040 | arc() - L<Imager::Draw/arc> | |
4041 | ||
4042 | bits() - L<Imager::ImageTypes/bits> - number of bits per sample for the | |
4043 | image | |
4044 | ||
4045 | box() - L<Imager::Draw/box> | |
4046 | ||
4047 | circle() - L<Imager::Draw/circle> | |
4048 | ||
4049 | colorcount() - L<Imager::Draw/colorcount> | |
4050 | ||
4051 | combines() - L<Imager::Draw/combines> | |
4052 | ||
4053 | compose() - L<Imager::Transformations/compose> | |
4054 | ||
4055 | convert() - L<Imager::Transformations/"Color transformations"> - | |
4056 | transform the color space | |
4057 | ||
4058 | copy() - L<Imager::Transformations/copy> | |
4059 | ||
4060 | crop() - L<Imager::Transformations/crop> - extract part of an image | |
4061 | ||
4062 | def_guess_type() - L<Imager::Files/def_guess_type> | |
4063 | ||
4064 | deltag() - L<Imager::ImageTypes/deltag> - delete image tags | |
4065 | ||
4066 | difference() - L<Imager::Filters/"Image Difference"> | |
4067 | ||
4068 | errstr() - L<"Basic Overview"> | |
4069 | ||
4070 | filter() - L<Imager::Filters> | |
4071 | ||
4072 | findcolor() - L<Imager::ImageTypes/findcolor> - search the image palette, if it | |
4073 | has one | |
4074 | ||
4075 | flip() - L<Imager::Transformations/flip> | |
4076 | ||
4077 | flood_fill() - L<Imager::Draw/flood_fill> | |
4078 | ||
4079 | getchannels() - L<Imager::ImageTypes/getchannels> | |
4080 | ||
4081 | getcolorcount() - L<Imager::ImageTypes/getcolorcount> | |
4082 | ||
4083 | getcolors() - L<Imager::ImageTypes/getcolors> - get colors from the image | |
4084 | palette, if it has one | |
4085 | ||
4086 | getcolorusage() - L<Imager::ImageTypes/getcolorusage> | |
4087 | ||
4088 | getcolorusagehash() - L<Imager::ImageTypes/getcolorusagehash> | |
4089 | ||
4090 | get_file_limits() - L<Imager::Files/"Limiting the sizes of images you read"> | |
4091 | ||
4092 | getheight() - L<Imager::ImageTypes/getwidth> | |
4093 | ||
4094 | getmask() - L<Imager::ImageTypes/getmask> | |
4095 | ||
4096 | getpixel() - L<Imager::Draw/getpixel> | |
4097 | ||
4098 | getsamples() - L<Imager::Draw/getsamples> | |
4099 | ||
4100 | getscanline() - L<Imager::Draw/getscanline> | |
4101 | ||
4102 | getwidth() - L<Imager::ImageTypes/getwidth> | |
4103 | ||
4104 | img_set() - L<Imager::ImageTypes/img_set> | |
4105 | ||
4106 | init() - L<Imager::ImageTypes/init> | |
4107 | ||
4108 | is_bilevel() - L<Imager::ImageTypes/is_bilevel> | |
4109 | ||
4110 | line() - L<Imager::Draw/line> | |
4111 | ||
4112 | load_plugin() - L<Imager::Filters/load_plugin> | |
4113 | ||
4114 | map() - L<Imager::Transformations/"Color Mappings"> - remap color | |
4115 | channel values | |
4116 | ||
4117 | masked() - L<Imager::ImageTypes/masked> - make a masked image | |
4118 | ||
4119 | matrix_transform() - L<Imager::Engines/matrix_transform> | |
4120 | ||
4121 | maxcolors() - L<Imager::ImageTypes/maxcolors> | |
4122 | ||
4123 | NC() - L<Imager::Handy/NC> | |
4124 | ||
4125 | NCF() - L<Imager::Handy/NCF> | |
4126 | ||
4127 | new() - L<Imager::ImageTypes/new> | |
4128 | ||
4129 | newcolor() - L<Imager::Handy/newcolor> | |
4130 | ||
4131 | newcolour() - L<Imager::Handy/newcolour> | |
4132 | ||
4133 | newfont() - L<Imager::Handy/newfont> | |
4134 | ||
4135 | NF() - L<Imager::Handy/NF> | |
4136 | ||
4137 | open() - L<Imager::Files> - an alias for read() | |
4138 | ||
4139 | parseiptc() - L<Imager::Files/parseiptc> - parse IPTC data from a JPEG | |
4140 | image | |
4141 | ||
4142 | paste() - L<Imager::Transformations/paste> - draw an image onto an image | |
4143 | ||
4144 | polygon() - L<Imager::Draw/polygon> | |
4145 | ||
4146 | polyline() - L<Imager::Draw/polyline> | |
4147 | ||
4148 | read() - L<Imager::Files> - read a single image from an image file | |
4149 | ||
4150 | read_multi() - L<Imager::Files> - read multiple images from an image | |
4151 | file | |
4152 | ||
4153 | read_types() - L<Imager::Files/read_types> - list image types Imager | |
4154 | can read. | |
4155 | ||
4156 | register_filter() - L<Imager::Filters/register_filter> | |
4157 | ||
4158 | register_reader() - L<Imager::Filters/register_reader> | |
4159 | ||
4160 | register_writer() - L<Imager::Filters/register_writer> | |
4161 | ||
4162 | rotate() - L<Imager::Transformations/rotate> | |
4163 | ||
4164 | rubthrough() - L<Imager::Transformations/rubthrough> - draw an image onto an | |
4165 | image and use the alpha channel | |
4166 | ||
4167 | scale() - L<Imager::Transformations/scale> | |
4168 | ||
4169 | scale_calculate() - L<Imager::Transformations/scale_calculate> | |
4170 | ||
4171 | scaleX() - L<Imager::Transformations/scaleX> | |
4172 | ||
4173 | scaleY() - L<Imager::Transformations/scaleY> | |
4174 | ||
4175 | setcolors() - L<Imager::ImageTypes/setcolors> - set palette colors in | |
4176 | a paletted image | |
4177 | ||
4178 | set_file_limits() - L<Imager::Files/"Limiting the sizes of images you read"> | |
4179 | ||
4180 | setmask() - L<Imager::ImageTypes/setmask> | |
4181 | ||
4182 | setpixel() - L<Imager::Draw/setpixel> | |
4183 | ||
4184 | setsamples() - L<Imager::Draw/setsamples> | |
4185 | ||
4186 | setscanline() - L<Imager::Draw/setscanline> | |
4187 | ||
4188 | settag() - L<Imager::ImageTypes/settag> | |
4189 | ||
4190 | string() - L<Imager::Draw/string> - draw text on an image | |
4191 | ||
4192 | tags() - L<Imager::ImageTypes/tags> - fetch image tags | |
4193 | ||
4194 | to_paletted() - L<Imager::ImageTypes/to_paletted> | |
4195 | ||
4196 | to_rgb16() - L<Imager::ImageTypes/to_rgb16> | |
4197 | ||
4198 | to_rgb8() - L<Imager::ImageTypes/to_rgb8> | |
4199 | ||
4200 | transform() - L<Imager::Engines/"transform"> | |
4201 | ||
4202 | transform2() - L<Imager::Engines/"transform2"> | |
4203 | ||
4204 | type() - L<Imager::ImageTypes/type> - type of image (direct vs paletted) | |
4205 | ||
4206 | unload_plugin() - L<Imager::Filters/unload_plugin> | |
4207 | ||
4208 | virtual() - L<Imager::ImageTypes/virtual> - whether the image has it's own | |
4209 | data | |
4210 | ||
4211 | write() - L<Imager::Files> - write an image to a file | |
4212 | ||
4213 | write_multi() - L<Imager::Files> - write multiple image to an image | |
4214 | file. | |
4215 | ||
4216 | write_types() - L<Imager::Files/read_types> - list image types Imager | |
4217 | can write. | |
4218 | ||
4219 | =head1 CONCEPT INDEX | |
4220 | ||
4221 | animated GIF - L<Imager::Files/"Writing an animated GIF"> | |
4222 | ||
4223 | aspect ratio - L<Imager::ImageTypes/i_xres>, | |
4224 | L<Imager::ImageTypes/i_yres>, L<Imager::ImageTypes/i_aspect_only> | |
4225 | ||
4226 | blend - alpha blending one image onto another | |
4227 | L<Imager::Transformations/rubthrough> | |
4228 | ||
4229 | blur - L<Imager::Filters/guassian>, L<Imager::Filters/conv> | |
4230 | ||
4231 | boxes, drawing - L<Imager::Draw/box> | |
4232 | ||
4233 | changes between image - L<Imager::Filter/"Image Difference"> | |
4234 | ||
4235 | color - L<Imager::Color> | |
4236 | ||
4237 | color names - L<Imager::Color>, L<Imager::Color::Table> | |
4238 | ||
4239 | combine modes - L<Imager::Fill/combine> | |
4240 | ||
4241 | compare images - L<Imager::Filter/"Image Difference"> | |
4242 | ||
4243 | contrast - L<Imager::Filter/contrast>, L<Imager::Filter/autolevels> | |
4244 | ||
4245 | convolution - L<Imager::Filter/conv> | |
4246 | ||
4247 | cropping - L<Imager::Transformations/crop> | |
4248 | ||
4249 | CUR files - L<Imager::Files/"ICO (Microsoft Windows Icon) and CUR (Microsoft Windows Cursor)"> | |
4250 | ||
4251 | C<diff> images - L<Imager::Filter/"Image Difference"> | |
4252 | ||
4253 | dpi - L<Imager::ImageTypes/i_xres>, | |
4254 | L<Imager::Cookbook/"Image spatial resolution"> | |
4255 | ||
4256 | drawing boxes - L<Imager::Draw/box> | |
4257 | ||
4258 | drawing lines - L<Imager::Draw/line> | |
4259 | ||
4260 | drawing text - L<Imager::Draw/string>, L<Imager::Draw/align_string> | |
4261 | ||
4262 | error message - L<"Basic Overview"> | |
4263 | ||
4264 | files, font - L<Imager::Font> | |
4265 | ||
4266 | files, image - L<Imager::Files> | |
4267 | ||
4268 | filling, types of fill - L<Imager::Fill> | |
4269 | ||
4270 | filling, boxes - L<Imager::Draw/box> | |
4271 | ||
4272 | filling, flood fill - L<Imager::Draw/flood_fill> | |
4273 | ||
4274 | flood fill - L<Imager::Draw/flood_fill> | |
4275 | ||
4276 | fonts - L<Imager::Font> | |
4277 | ||
4278 | fonts, drawing with - L<Imager::Draw/string>, | |
4279 | L<Imager::Draw/align_string>, L<Imager::Font::Wrap> | |
4280 | ||
4281 | fonts, metrics - L<Imager::Font/bounding_box>, L<Imager::Font::BBox> | |
4282 | ||
4283 | fonts, multiple master - L<Imager::Font/"MULTIPLE MASTER FONTS"> | |
4284 | ||
4285 | fountain fill - L<Imager::Fill/"Fountain fills">, | |
4286 | L<Imager::Filters/fountain>, L<Imager::Fountain>, | |
4287 | L<Imager::Filters/gradgen> | |
4288 | ||
4289 | GIF files - L<Imager::Files/"GIF"> | |
4290 | ||
4291 | GIF files, animated - L<Imager::File/"Writing an animated GIF"> | |
4292 | ||
4293 | gradient fill - L<Imager::Fill/"Fountain fills">, | |
4294 | L<Imager::Filters/fountain>, L<Imager::Fountain>, | |
4295 | L<Imager::Filters/gradgen> | |
4296 | ||
4297 | grayscale, convert image to - L<Imager::Transformations/convert> | |
4298 | ||
4299 | guassian blur - L<Imager::Filter/guassian> | |
4300 | ||
4301 | hatch fills - L<Imager::Fill/"Hatched fills"> | |
4302 | ||
4303 | ICO files - L<Imager::Files/"ICO (Microsoft Windows Icon) and CUR (Microsoft Windows Cursor)"> | |
4304 | ||
4305 | invert image - L<Imager::Filter/hardinvert> | |
4306 | ||
4307 | JPEG - L<Imager::Files/"JPEG"> | |
4308 | ||
4309 | limiting image sizes - L<Imager::Files/"Limiting the sizes of images you read"> | |
4310 | ||
4311 | lines, drawing - L<Imager::Draw/line> | |
4312 | ||
4313 | matrix - L<Imager::Matrix2d>, | |
4314 | L<Imager::Transformations/"Matrix Transformations">, | |
4315 | L<Imager::Font/transform> | |
4316 | ||
4317 | metadata, image - L<Imager::ImageTypes/"Tags"> | |
4318 | ||
4319 | mosaic - L<Imager::Filter/mosaic> | |
4320 | ||
4321 | noise, filter - L<Imager::Filter/noise> | |
4322 | ||
4323 | noise, rendered - L<Imager::Filter/turbnoise>, | |
4324 | L<Imager::Filter/radnoise> | |
4325 | ||
4326 | paste - L<Imager::Transformations/paste>, | |
4327 | L<Imager::Transformations/rubthrough> | |
4328 | ||
4329 | pseudo-color image - L<Imager::ImageTypes/to_paletted>, | |
4330 | L<Imager::ImageTypes/new> | |
4331 | ||
4332 | posterize - L<Imager::Filter/postlevels> | |
4333 | ||
4334 | png files - L<Imager::Files>, L<Imager::Files/"PNG"> | |
4335 | ||
4336 | pnm - L<Imager::Files/"PNM (Portable aNy Map)"> | |
4337 | ||
4338 | rectangles, drawing - L<Imager::Draw/box> | |
4339 | ||
4340 | resizing an image - L<Imager::Transformations/scale>, | |
4341 | L<Imager::Transformations/crop> | |
4342 | ||
4343 | RGB (SGI) files - L<Imager::Files/"SGI (RGB, BW)"> | |
4344 | ||
4345 | saving an image - L<Imager::Files> | |
4346 | ||
4347 | scaling - L<Imager::Transformations/scale> | |
4348 | ||
4349 | SGI files - L<Imager::Files/"SGI (RGB, BW)"> | |
4350 | ||
4351 | sharpen - L<Imager::Filters/unsharpmask>, L<Imager::Filters/conv> | |
4352 | ||
4353 | size, image - L<Imager::ImageTypes/getwidth>, | |
4354 | L<Imager::ImageTypes/getheight> | |
4355 | ||
4356 | size, text - L<Imager::Font/bounding_box> | |
4357 | ||
4358 | tags, image metadata - L<Imager::ImageTypes/"Tags"> | |
4359 | ||
4360 | text, drawing - L<Imager::Draw/string>, L<Imager::Draw/align_string>, | |
4361 | L<Imager::Font::Wrap> | |
4362 | ||
4363 | text, wrapping text in an area - L<Imager::Font::Wrap> | |
4364 | ||
4365 | text, measuring - L<Imager::Font/bounding_box>, L<Imager::Font::BBox> | |
4366 | ||
4367 | tiles, color - L<Imager::Filter/mosaic> | |
4368 | ||
4369 | unsharp mask - L<Imager::Filter/unsharpmask> | |
4370 | ||
4371 | watermark - L<Imager::Filter/watermark> | |
4372 | ||
4373 | writing an image to a file - L<Imager::Files> | |
4374 | ||
4375 | =head1 SUPPORT | |
4376 | ||
4377 | The best place to get help with Imager is the mailing list. | |
4378 | ||
4379 | To subscribe send a message with C<subscribe> in the body to: | |
4380 | ||
4381 | imager-devel+request@molar.is | |
4382 | ||
4383 | or use the form at: | |
4384 | ||
4385 | =over | |
4386 | ||
4387 | L<http://www.molar.is/en/lists/imager-devel/> | |
4388 | ||
4389 | =back | |
4390 | ||
4391 | where you can also find the mailing list archive. | |
4392 | ||
4393 | You can report bugs by pointing your browser at: | |
4394 | ||
4395 | =over | |
4396 | ||
4397 | L<https://rt.cpan.org/NoAuth/ReportBug.html?Queue=Imager> | |
4398 | ||
4399 | =back | |
4400 | ||
4401 | or by sending an email to: | |
4402 | ||
4403 | =over | |
4404 | ||
4405 | bug-Imager@rt.cpan.org | |
4406 | ||
4407 | =back | |
4408 | ||
4409 | Please remember to include the versions of Imager, perl, supporting | |
4410 | libraries, and any relevant code. If you have specific images that | |
4411 | cause the problems, please include those too. | |
4412 | ||
4413 | If you don't want to publish your email address on a mailing list you | |
4414 | can use CPAN::Forum: | |
4415 | ||
4416 | http://www.cpanforum.com/dist/Imager | |
4417 | ||
4418 | You will need to register to post. | |
4419 | ||
4420 | =head1 CONTRIBUTING TO IMAGER | |
4421 | ||
4422 | =head2 Feedback | |
4423 | ||
4424 | I like feedback. | |
4425 | ||
4426 | If you like or dislike Imager, you can add a public review of Imager | |
4427 | at CPAN Ratings: | |
4428 | ||
4429 | http://cpanratings.perl.org/dist/Imager | |
4430 | ||
4431 | This requires a Bitcard Account (http://www.bitcard.org). | |
4432 | ||
4433 | You can also send email to the maintainer below. | |
4434 | ||
4435 | If you send me a bug report via email, it will be copied to RT. | |
4436 | ||
4437 | =head2 Patches | |
4438 | ||
4439 | I accept patches, preferably against the main branch in subversion. | |
4440 | You should include an explanation of the reason for why the patch is | |
4441 | needed or useful. | |
4442 | ||
4443 | Your patch should include regression tests where possible, otherwise | |
4444 | it will be delayed until I get a chance to write them. | |
4445 | ||
4446 | =head1 AUTHOR | |
4447 | ||
4448 | Tony Cook <tony@imager.perl.org> is the current maintainer for Imager. | |
4449 | ||
4450 | Arnar M. Hrafnkelsson is the original author of Imager. | |
4451 | ||
4452 | Many others have contributed to Imager, please see the README for a | |
4453 | complete list. | |
4454 | ||
4455 | =head1 SEE ALSO | |
4456 | ||
4457 | L<perl>(1), L<Imager::ImageTypes>(3), L<Imager::Files>(3), | |
4458 | L<Imager::Draw>(3), L<Imager::Color>(3), L<Imager::Fill>(3), | |
4459 | L<Imager::Font>(3), L<Imager::Transformations>(3), | |
4460 | L<Imager::Engines>(3), L<Imager::Filters>(3), L<Imager::Expr>(3), | |
4461 | L<Imager::Matrix2d>(3), L<Imager::Fountain>(3) | |
4462 | ||
4463 | L<http://imager.perl.org/> | |
4464 | ||
4465 | L<Affix::Infix2Postfix>(3), L<Parse::RecDescent>(3) | |
4466 | ||
4467 | Other perl imaging modules include: | |
4468 | ||
4469 | L<GD>(3), L<Image::Magick>(3), L<Graphics::Magick>(3). | |
4470 | ||
4471 | =cut |