*/
undef_int
-i_init_fonts() {
+i_init_fonts(int t1log) {
mm_log((1,"Initializing fonts\n"));
#ifdef HAVE_LIBT1
- init_t1();
+ i_init_t1(t1log);
#endif
#ifdef HAVE_LIBTT
- init_tt();
+ i_init_tt();
#endif
#ifdef HAVE_FT2
/*
-=item i_init_t1()
+=item i_init_t1(t1log)
Initializes the t1lib font rendering engine.
*/
undef_int
-init_t1() {
+i_init_t1(int t1log) {
+ int init_flags = IGNORE_CONFIGFILE|IGNORE_FONTDATABASE;
mm_log((1,"init_t1()\n"));
- if ((T1_InitLib(LOGFILE|IGNORE_CONFIGFILE|IGNORE_FONTDATABASE) == NULL)){
+
+ if (t1log)
+ init_flags |= LOGFILE;
+ if ((T1_InitLib(init_flags) == NULL)){
mm_log((1,"Initialization of t1lib failed\n"));
return(1);
}
#endif /* HAVE_LIBT1 */
+/* Truetype font support */
+#ifdef HAVE_LIBTT
+#include <freetype.h>
+#define TT_CHC 5
+/* convert a code point into an index in the glyph cache */
+#define TT_HASH(x) ((x) & 0xFF)
+typedef struct i_glyph_entry_ {
+ TT_Glyph glyph;
+ unsigned long ch;
+} i_tt_glyph_entry;
+#define TT_NOCHAR (~0UL)
+struct TT_Instancehandle_ {
+ TT_Instance instance;
+ TT_Instance_Metrics imetrics;
+ TT_Glyph_Metrics gmetrics[256];
+ i_tt_glyph_entry glyphs[256];
+ int smooth;
+ int ptsize;
+ int order;
+};
+typedef struct TT_Instancehandle_ TT_Instancehandle;
-/* Truetype font support */
-
-#ifdef HAVE_LIBTT
-
+struct TT_Fonthandle_ {
+ TT_Face face;
+ TT_Face_Properties properties;
+ TT_Instancehandle instanceh[TT_CHC];
+ TT_CharMap char_map;
+};
/* Defines */
static void i_tt_done_raster_map( TT_Raster_Map *bit );
static void i_tt_clear_raster_map( TT_Raster_Map* bit );
static void i_tt_blit_or( TT_Raster_Map *dst, TT_Raster_Map *src,int x_off, int y_off );
-static int i_tt_get_glyph( TT_Fonthandle *handle, int inst, unsigned char j );
-static void i_tt_render_glyph( TT_Glyph glyph, TT_Glyph_Metrics* gmetrics, TT_Raster_Map *bit, TT_Raster_Map *small_bit, int x_off, int y_off, int smooth );
-static void i_tt_render_all_glyphs( TT_Fonthandle *handle, int inst, TT_Raster_Map *bit, TT_Raster_Map *small_bit, int cords[6], char* txt, int len, int smooth );
+static int i_tt_get_glyph( TT_Fonthandle *handle, int inst, unsigned long j );
+static void
+i_tt_render_glyph( TT_Glyph glyph, TT_Glyph_Metrics* gmetrics,
+ TT_Raster_Map *bit, TT_Raster_Map *small_bit,
+ int x_off, int y_off, int smooth );
+static int
+i_tt_render_all_glyphs( TT_Fonthandle *handle, int inst, TT_Raster_Map *bit,
+ TT_Raster_Map *small_bit, int cords[6],
+ char const* txt, int len, int smooth, int utf8 );
static void i_tt_dump_raster_map2( i_img* im, TT_Raster_Map* bit, int xb, int yb, i_color *cl, int smooth );
static void i_tt_dump_raster_map_channel( i_img* im, TT_Raster_Map* bit, int xb, int yb, int channel, int smooth );
-static int i_tt_rasterize( TT_Fonthandle *handle, TT_Raster_Map *bit, int cords[6], float points, char* txt, int len, int smooth );
-static undef_int i_tt_bbox_inst( TT_Fonthandle *handle, int inst ,const char *txt, int len, int cords[6] );
+static int
+i_tt_rasterize( TT_Fonthandle *handle, TT_Raster_Map *bit, int cords[6],
+ float points, char const* txt, int len, int smooth, int utf8 );
+static undef_int i_tt_bbox_inst( TT_Fonthandle *handle, int inst ,const char *txt, int len, int cords[6], int utf8 );
/* static globals needed */
*/
undef_int
-init_tt() {
+i_init_tt() {
TT_Error error;
mm_log((1,"init_tt()\n"));
error = TT_Init_FreeType( &engine );
int i,idx;
TT_Error error;
- mm_log((1,"i_tt_get_instance(handle 0x%X, points %d, smooth %d)\n",handle,points,smooth));
+ mm_log((1,"i_tt_get_instance(handle 0x%X, points %d, smooth %d)\n",
+ handle,points,smooth));
if (smooth == -1) { /* Smooth doesn't matter for this search */
- for(i=0;i<TT_CHC;i++) if (handle->instanceh[i].ptsize==points) {
- mm_log((1,"i_tt_get_instance: in cache - (non selective smoothing search) returning %d\n",i));
- return i;
+ for(i=0;i<TT_CHC;i++) {
+ if (handle->instanceh[i].ptsize==points) {
+ mm_log((1,"i_tt_get_instance: in cache - (non selective smoothing search) returning %d\n",i));
+ return i;
+ }
}
smooth=1; /* We will be adding a font - add it as smooth then */
} else { /* Smooth doesn't matter for this search */
- for(i=0;i<TT_CHC;i++) if (handle->instanceh[i].ptsize==points && handle->instanceh[i].smooth==smooth) {
- mm_log((1,"i_tt_get_instance: in cache returning %d\n",i));
- return i;
+ for(i=0;i<TT_CHC;i++) {
+ if (handle->instanceh[i].ptsize == points
+ && handle->instanceh[i].smooth == smooth) {
+ mm_log((1,"i_tt_get_instance: in cache returning %d\n",i));
+ return i;
+ }
}
}
/* Found the instance in the cache - return the cache index */
- for(idx=0;idx<TT_CHC;idx++) if (!(handle->instanceh[idx].order)) break; /* find the lru item */
+ for(idx=0;idx<TT_CHC;idx++) {
+ if (!(handle->instanceh[idx].order)) break; /* find the lru item */
+ }
mm_log((1,"i_tt_get_instance: lru item is %d\n",idx));
- mm_log((1,"i_tt_get_instance: lru pointer 0x%X\n",USTRCT(handle->instanceh[idx].instance) ));
+ mm_log((1,"i_tt_get_instance: lru pointer 0x%X\n",
+ USTRCT(handle->instanceh[idx].instance) ));
if ( USTRCT(handle->instanceh[idx].instance) ) {
mm_log((1,"i_tt_get_instance: freeing lru item from cache %d\n",idx));
- TT_Done_Instance( handle->instanceh[idx].instance ); /* Free instance if needed */
+
+ /* Free cached glyphs */
+ for(i=0;i<256;i++)
+ if ( USTRCT(handle->instanceh[idx].glyphs[i].glyph) )
+ TT_Done_Glyph( handle->instanceh[idx].glyphs[i].glyph );
+
+ for(i=0;i<256;i++) {
+ handle->instanceh[idx].glyphs[i].ch = TT_NOCHAR;
+ USTRCT(handle->instanceh[idx].glyphs[i].glyph)=NULL;
+ }
+
+ /* Free instance if needed */
+ TT_Done_Instance( handle->instanceh[idx].instance );
}
/* create and initialize instance */
handle->instanceh[idx].smooth=smooth;
TT_Get_Instance_Metrics( handle->instanceh[idx].instance, &(handle->instanceh[idx].imetrics) );
- /* Zero the memory for the glyph storage so they are not thought as cached if they haven't been cached
- since this new font was loaded */
+ /* Zero the memory for the glyph storage so they are not thought as
+ cached if they haven't been cached since this new font was loaded */
- for(i=0;i<256;i++) USTRCT(handle->instanceh[idx].glyphs[i])=NULL;
+ for(i=0;i<256;i++) {
+ handle->instanceh[idx].glyphs[i].ch = TT_NOCHAR;
+ USTRCT(handle->instanceh[idx].glyphs[i].glyph)=NULL;
+ }
return idx;
}
/* load the typeface */
error = TT_Open_Face( engine, fontname, &handle->face );
if ( error ) {
- if ( error == TT_Err_Could_Not_Open_File ) { mm_log((1, "Could not find/open %s.\n", fontname )) }
- else { mm_log((1, "Error while opening %s, error code = 0x%x.\n",fontname, error )); }
+ if ( error == TT_Err_Could_Not_Open_File ) {
+ mm_log((1, "Could not find/open %s.\n", fontname ));
+ }
+ else {
+ mm_log((1, "Error while opening %s, error code = 0x%x.\n",fontname,
+ error ));
+ }
return NULL;
}
TT_Get_Face_Properties( handle->face, &(handle->properties) );
+
/* First, look for a Unicode charmap */
-
n = handle->properties.num_CharMaps;
USTRCT( handle->char_map )=NULL; /* Invalidate character map */
for ( i = 0; i < n; i++ ) {
TT_Get_CharMap_ID( handle->face, i, &platform, &encoding );
- if ( (platform == 3 && encoding == 1 ) || (platform == 0 && encoding == 0 ) ) {
- mm_log((2,"i_tt_new - found char map platform %u encoding %u\n", platform, encoding));
+ if ( (platform == 3 && encoding == 1 )
+ || (platform == 0 && encoding == 0 ) ) {
+ mm_log((2,"i_tt_new - found char map platform %u encoding %u\n",
+ platform, encoding));
TT_Get_CharMap( handle->face, i, &(handle->char_map) );
break;
}
static
int
-i_tt_get_glyph( TT_Fonthandle *handle, int inst, unsigned char j) { /* FIXME: Check if unsigned char is enough */
+i_tt_get_glyph( TT_Fonthandle *handle, int inst, unsigned long j) {
unsigned short load_flags, code;
TT_Error error;
- mm_log((1, "i_tt_get_glyph(handle 0x%X, inst %d, j %d (%c))\n",handle,inst,j,j));
- mm_log((1, "handle->instanceh[inst].glyphs[j]=0x%08X\n",handle->instanceh[inst].glyphs[j] ));
+ mm_log((1, "i_tt_get_glyph(handle 0x%X, inst %d, j %d (%c))\n",
+ handle,inst,j, ((j >= ' ' && j <= '~') ? j : '.')));
+
+ /*mm_log((1, "handle->instanceh[inst].glyphs[j]=0x%08X\n",handle->instanceh[inst].glyphs[j] ));*/
- if ( TT_VALID(handle->instanceh[inst].glyphs[j]) ) {
+ if ( TT_VALID(handle->instanceh[inst].glyphs[TT_HASH(j)].glyph)
+ && handle->instanceh[inst].glyphs[TT_HASH(j)].ch == j) {
mm_log((1,"i_tt_get_glyph: %d in cache\n",j));
return 1;
}
+
+ if ( TT_VALID(handle->instanceh[inst].glyphs[TT_HASH(j)].glyph) ) {
+ /* clean up the entry */
+ TT_Done_Glyph( handle->instanceh[inst].glyphs[TT_HASH(j)].glyph );
+ USTRCT( handle->instanceh[inst].glyphs[TT_HASH(j)].glyph ) = NULL;
+ handle->instanceh[inst].glyphs[TT_HASH(j)].ch = TT_NOCHAR;
+ }
/* Ok - it wasn't cached - try to get it in */
load_flags = TTLOAD_SCALE_GLYPH;
if ( code >= handle->properties.num_Glyphs ) code = 0;
} else code = TT_Char_Index( handle->char_map, j );
- if ( (error = TT_New_Glyph( handle->face, &handle->instanceh[inst].glyphs[j])) )
+ if ( (error = TT_New_Glyph( handle->face, &handle->instanceh[inst].glyphs[TT_HASH(j)].glyph)) ) {
mm_log((1, "Cannot allocate and load glyph: error 0x%x.\n", error ));
- if ( (error = TT_Load_Glyph( handle->instanceh[inst].instance, handle->instanceh[inst].glyphs[j], code, load_flags)) )
+ return 0;
+ }
+ if ( (error = TT_Load_Glyph( handle->instanceh[inst].instance, handle->instanceh[inst].glyphs[TT_HASH(j)].glyph, code, load_flags)) ) {
mm_log((1, "Cannot allocate and load glyph: error 0x%x.\n", error ));
-
+ /* Don't leak */
+ TT_Done_Glyph( handle->instanceh[inst].glyphs[TT_HASH(j)].glyph );
+ USTRCT( handle->instanceh[inst].glyphs[TT_HASH(j)].glyph ) = NULL;
+ return 0;
+ }
+
/* At this point the glyph should be allocated and loaded */
+ handle->instanceh[inst].glyphs[TT_HASH(j)].ch = j;
+
/* Next get the glyph metrics */
-
- error = TT_Get_Glyph_Metrics( handle->instanceh[inst].glyphs[j], &handle->instanceh[inst].gmetrics[j] );
- mm_log((1, "TT_Get_Glyph_Metrics: error 0x%x.\n", error ));
+ error = TT_Get_Glyph_Metrics( handle->instanceh[inst].glyphs[TT_HASH(j)].glyph,
+ &handle->instanceh[inst].gmetrics[TT_HASH(j)] );
+ if (error) {
+ mm_log((1, "TT_Get_Glyph_Metrics: error 0x%x.\n", error ));
+ TT_Done_Glyph( handle->instanceh[inst].glyphs[TT_HASH(j)].glyph );
+ USTRCT( handle->instanceh[inst].glyphs[TT_HASH(j)].glyph ) = NULL;
+ handle->instanceh[inst].glyphs[TT_HASH(j)].ch = TT_NOCHAR;
+ return 0;
+ }
+
return 1;
}
*/
static
-void
-i_tt_render_all_glyphs( TT_Fonthandle *handle, int inst, TT_Raster_Map *bit, TT_Raster_Map *small_bit, int cords[6], char* txt, int len, int smooth ) {
- unsigned char j;
+int
+i_tt_render_all_glyphs( TT_Fonthandle *handle, int inst, TT_Raster_Map *bit, TT_Raster_Map *small_bit, int cords[6], char const* txt, int len, int smooth, int utf8 ) {
+ unsigned long j;
int i;
TT_F26Dot6 x,y;
x=-cords[0]; /* FIXME: If you font is antialiased this should be expanded by one to allow for aa expansion and the allocation too - do before passing here */
y=-cords[4];
- for ( i = 0; i < len; i++ ) {
- j = txt[i];
- if ( !i_tt_get_glyph(handle,inst,j) ) continue;
- i_tt_render_glyph( handle->instanceh[inst].glyphs[j], &handle->instanceh[inst].gmetrics[j], bit, small_bit, x, y, smooth );
- x += handle->instanceh[inst].gmetrics[j].advance / 64;
+ while (len) {
+ if (utf8) {
+ j = i_utf8_advance(&txt, &len);
+ if (j == ~0UL) {
+ i_push_error(0, "invalid UTF8 character");
+ return 0;
+ }
+ }
+ else {
+ j = (unsigned char)*txt++;
+ --len;
+ }
+ if ( !i_tt_get_glyph(handle,inst,j) )
+ continue;
+ i_tt_render_glyph( handle->instanceh[inst].glyphs[TT_HASH(j)].glyph,
+ &handle->instanceh[inst].gmetrics[TT_HASH(j)], bit,
+ small_bit, x, y, smooth );
+ x += handle->instanceh[inst].gmetrics[TT_HASH(j)].advance / 64;
}
+
+ return 1;
}
static
int
-i_tt_rasterize( TT_Fonthandle *handle, TT_Raster_Map *bit, int cords[6], float points, char* txt, int len, int smooth ) {
+i_tt_rasterize( TT_Fonthandle *handle, TT_Raster_Map *bit, int cords[6], float points, char const* txt, int len, int smooth, int utf8 ) {
int inst;
int width, height;
TT_Raster_Map small_bit;
}
/* calculate bounding box */
- i_tt_bbox_inst( handle, inst, txt, len, cords );
+ i_tt_bbox_inst( handle, inst, txt, len, cords, 0 );
width = cords[2]-cords[0];
height = cords[5]-cords[4];
i_tt_clear_raster_map( bit );
if ( smooth ) i_tt_init_raster_map( &small_bit, handle->instanceh[inst].imetrics.x_ppem + 32, height, smooth );
- i_tt_render_all_glyphs( handle, inst, bit, &small_bit, cords, txt, len, smooth );
+ i_tt_render_all_glyphs( handle, inst, bit, &small_bit, cords, txt, len,
+ smooth, utf8 );
/* ascent = ( handle->properties.horizontal->Ascender * handle->instanceh[inst].imetrics.y_ppem ) / handle->properties.header->Units_Per_EM; */
/*
-=item i_tt_cp(handle, im, xb, yb, channel, points, txt, len, smooth)
+=item i_tt_cp(handle, im, xb, yb, channel, points, txt, len, smooth, utf8)
Interface to text rendering into a single channel in an image
*/
undef_int
-i_tt_cp( TT_Fonthandle *handle, i_img *im, int xb, int yb, int channel, float points, char* txt, int len, int smooth ) {
+i_tt_cp( TT_Fonthandle *handle, i_img *im, int xb, int yb, int channel, float points, char const* txt, int len, int smooth, int utf8 ) {
int cords[6];
int ascent, st_offset;
TT_Raster_Map bit;
- if (! i_tt_rasterize( handle, &bit, cords, points, txt, len, smooth ) ) return 0;
+ if (! i_tt_rasterize( handle, &bit, cords, points, txt, len, smooth, utf8 ) ) return 0;
ascent=cords[5];
st_offset=cords[0];
/*
-=item i_tt_text(handle, im, xb, yb, cl, points, txt, len, smooth)
+=item i_tt_text(handle, im, xb, yb, cl, points, txt, len, smooth, utf8)
Interface to text rendering in a single color onto an image
*/
undef_int
-i_tt_text( TT_Fonthandle *handle, i_img *im, int xb, int yb, i_color *cl, float points, char* txt, int len, int smooth) {
+i_tt_text( TT_Fonthandle *handle, i_img *im, int xb, int yb, i_color *cl, float points, char const* txt, int len, int smooth, int utf8) {
int cords[6];
int ascent, st_offset;
TT_Raster_Map bit;
- if (! i_tt_rasterize( handle, &bit, cords, points, txt, len, smooth ) ) return 0;
+ if (! i_tt_rasterize( handle, &bit, cords, points, txt, len, smooth, utf8 ) ) return 0;
ascent=cords[5];
st_offset=cords[0];
/*
-=item i_tt_bbox_inst(handle, inst, txt, len, cords)
+=item i_tt_bbox_inst(handle, inst, txt, len, cords, utf8)
Function to get texts bounding boxes given the instance of the font (internal)
static
undef_int
-i_tt_bbox_inst( TT_Fonthandle *handle, int inst ,const char *txt, int len, int cords[6] ) {
+i_tt_bbox_inst( TT_Fonthandle *handle, int inst ,const char *txt, int len, int cords[6], int utf8 ) {
int i, upm, ascent, descent, gascent, gdescent, width, casc, cdesc, first, start;
- unsigned int j;
+ unsigned long j;
unsigned char *ustr;
ustr=(unsigned char*)txt;
- mm_log((1,"i_tt_box_inst(handle 0x%X,inst %d,txt '%.*s', len %d)\n",handle,inst,len,txt,len));
+ mm_log((1,"i_tt_box_inst(handle 0x%X,inst %d,txt '%.*s', len %d, utf8 %d)\n",handle,inst,len,txt,len, utf8));
upm = handle->properties.header->Units_Per_EM;
gascent = ( handle->properties.horizontal->Ascender * handle->instanceh[inst].imetrics.y_ppem + upm - 1) / upm;
mm_log((1, "i_tt_box_inst: gascent=%d gdescent=%d\n", gascent, gdescent));
first=1;
- for ( i = 0; i < len; ++i ) {
- j = ustr[i];
+ while (len) {
+ if (utf8) {
+ j = i_utf8_advance(&txt, &len);
+ if (j == ~0UL) {
+ i_push_error(0, "invalid UTF8 character");
+ return 0;
+ }
+ }
+ else {
+ j = (unsigned char)*txt++;
+ --len;
+ }
if ( i_tt_get_glyph(handle,inst,j) ) {
- TT_Glyph_Metrics *gm = handle->instanceh[inst].gmetrics + j;
+ TT_Glyph_Metrics *gm = handle->instanceh[inst].gmetrics + TT_HASH(j);
width += gm->advance / 64;
casc = (gm->bbox.yMax+63) / 64;
cdesc = (gm->bbox.yMin-63) / 64;
/*
-=item i_tt_bbox(handle, points, txt, len, cords)
+=item i_tt_bbox(handle, points, txt, len, cords, utf8)
Interface to get a strings bounding box
*/
undef_int
-i_tt_bbox( TT_Fonthandle *handle, float points,char *txt,int len,int cords[6]) {
+i_tt_bbox( TT_Fonthandle *handle, float points,char *txt,int len,int cords[6], int utf8) {
int inst;
- mm_log((1,"i_tt_box(handle 0x%X,points %f,txt '%.*s', len %d)\n",handle,points,len,txt,len));
+ mm_log((1,"i_tt_box(handle 0x%X,points %f,txt '%.*s', len %d, utf8 %d)\n",handle,points,len,txt,len, utf8));
if ( (inst=i_tt_get_instance(handle,points,-1)) < 0) {
mm_log((1,"i_tt_text: get instance failed\n"));
return 0;
}
- return i_tt_bbox_inst(handle, inst, txt, len, cords);
+ return i_tt_bbox_inst(handle, inst, txt, len, cords, utf8);
}
projects / imager.git / blobdiff