SWFFont loadSWFFontfromTTF(char *filename)
{
int i;
TT_Engine *engine;
TT_Face face;
TT_Instance instance;
TT_Glyph glyph;
TT_Glyph_Metrics metrics;
TT_Outline outline;
TT_CharMap charmap;
TT_Face_Properties properties;
TT_UShort pid, eid;
TT_Init_FreeType(engine);
error = TT_Open_Face(engine, filename, &face);
if(error)
fprintf(stderr, "Could not open face.\n");
TT_Get_Face_Properties(face, &properties);
for(i=0; i<properties->num_CharMaps; ++i)
TT_Get_CharMap_ID(face, i, &pid, &eid);
TT_Get_CharMap(face, charmapIndex, &charmap);
TT_New_Instance(face, &instance);
TT_New_Glyph(face, &glyph);
for(i=0; i<whatever; ++i)
{
TT_Load_Glyph(instance, glyph, TT_Char_Index(charmap, i), loadFlags);
TT_Get_Glyph_Outline(glyph, &outline);
TT_Get_Glyph_Metrics(glyph, &metrics);
}
TT_Done_FreeType(engine);
}
static TT_Error Load_Glyph(TTF_Font *font, Uint16 ch, struct glyph *glyph)
{
TT_UShort index;
TT_Glyph_Metrics metrics;
TT_Outline outline;
int x_offset;
int y_offset;
TT_Error error;
/* Load the glyph */
index = TT_Char_Index(font->map, UNICODE(ch));
error = TT_Load_Glyph(font->inst, font->glyph, index, TTLOAD_DEFAULT);
if ( error ) return error;
/* Get the bounding box */
TT_Get_Glyph_Metrics(font->glyph, &metrics);
glyph->minx = (metrics.bbox.xMin & -64) / 64;
glyph->maxx = ((metrics.bbox.xMax + 63) & -64) / 64;
glyph->miny = (metrics.bbox.yMin & -64) / 64;
glyph->maxy = ((metrics.bbox.yMax + 63) & -64) / 64;
glyph->advance = (metrics.advance & -64) / 64;
/* Adjust for bold and italic text */
if ( font->style & TTF_STYLE_BOLD ) {
glyph->maxx += font->glyph_overhang;
}
if ( font->style & TTF_STYLE_ITALIC ) {
glyph->maxx += round(font->glyph_italics);
}
/* Get the bitmap memory */
glyph->bitmap.width = ((glyph->maxx - glyph->minx) + 7) & ~7;
glyph->bitmap.rows = font->height;
glyph->bitmap.cols = glyph->bitmap.width/8;
glyph->bitmap.flow = TT_Flow_Down;
glyph->bitmap.size = (glyph->bitmap.rows * glyph->bitmap.cols);
if ( glyph->bitmap.size ) {
glyph->bitmap.bitmap = malloc(glyph->bitmap.size);
if ( ! glyph->bitmap.bitmap ) {
error = TT_Err_Out_Of_Memory;
goto was_error;
}
memset(glyph->bitmap.bitmap, 0, glyph->bitmap.size);
} else {
glyph->bitmap.bitmap = 0;
}
/* Get the pixmap memory */
glyph->pixmap.width = ((glyph->maxx - glyph->minx) + 3) & ~3;
glyph->pixmap.rows = font->height;
glyph->pixmap.cols = glyph->pixmap.width;
glyph->pixmap.flow = TT_Flow_Down;
glyph->pixmap.size = (glyph->pixmap.rows * glyph->pixmap.cols);
if ( glyph->pixmap.size ) {
glyph->pixmap.bitmap = malloc(glyph->pixmap.size);
if ( ! glyph->pixmap.bitmap ) {
error = TT_Err_Out_Of_Memory;
goto was_error;
}
memset(glyph->pixmap.bitmap, 0, glyph->pixmap.size);
} else {
glyph->pixmap.bitmap = 0;
}
/* Render the glyph into the bitmap and pixmap */
error = TT_Get_Glyph_Outline(font->glyph, &outline);
/* Handle the italic style */
if ( font->style & TTF_STYLE_ITALIC ) {
TT_Matrix shear;
shear.xx = 1<<16;
shear.xy = (int)(font->glyph_italics*(1<<16))/font->height;
shear.yx = 0;
shear.yy = 1<<16;
TT_Transform_Outline(&outline, &shear);
}
x_offset = -glyph->minx * 64;
y_offset = -round(font->descent) * 64;
TT_Translate_Outline(&outline, x_offset, y_offset);
error += TT_Get_Outline_Bitmap(engine, &outline, &glyph->bitmap);
error += TT_Get_Outline_Pixmap(engine, &outline, &glyph->pixmap);
/* Handle the bold style */
if ( font->style & TTF_STYLE_BOLD ) {
int row, col;
int offset;
int pixel;
Uint8 *pixmap;
/* The bitmap is easy, just render another copy */
for ( offset=0; offset < font->glyph_overhang; ++offset ) {
TT_Translate_Outline(&outline, 64, 0);
error += TT_Get_Outline_Bitmap(engine,
&outline,&glyph->bitmap);
}
x_offset += font->glyph_overhang*64;
/* The pixmap is a little harder, we have to add and clamp */
for ( row=glyph->pixmap.rows-1; row >= 0; --row ) {
pixmap = (Uint8 *)glyph->pixmap.bitmap +
row*glyph->pixmap.cols;
for (offset=1; offset<=font->glyph_overhang; ++offset) {
for (col=glyph->pixmap.cols-1; col > 0; --col) {
pixel=(pixmap[col]+pixmap[col-1]);
if ( pixel > 4 ) {
pixel = 4;
}
pixmap[col] = (Uint8)pixel;
}
}
}
}
TT_Translate_Outline(&outline, -x_offset, -y_offset);
was_error:
if ( error ) {
if ( glyph->bitmap.bitmap ) {
free(glyph->bitmap.bitmap);
glyph->bitmap.bitmap = 0;
}
if ( glyph->pixmap.bitmap ) {
free(glyph->pixmap.bitmap);
glyph->pixmap.bitmap = 0;
}
return error;
}
/* We're done, mark this glyph cached */
glyph->cached = ch;
return TT_Err_Ok;
}
static void image_ttf_faceinstance_ponder(INT32 args)
{
int *sstr;
int len,i,res,base=0;
struct image_ttf_face_struct *face_s;
struct image_ttf_faceinstance_struct *face_i=THISi;
int xmin=1000,xmax=-1000,pos=0;
if (!(face_s=(struct image_ttf_face_struct*)
get_storage(THISi->faceobj,image_ttf_face_program)))
Pike_error("Image.TTF.FaceInstance->ponder(): lost Face\n");
if (args && sp[-1].type==T_INT)
{
base=sp[-1].u.integer;
args--;
pop_stack();
}
if (sp[-args].type!=T_STRING)
Pike_error("Image.TTF.FaceInstance->ponder(): illegal argument 1\n");
switch( sp[-args].u.string->size_shift )
{
case 0:
ttf_please_translate_8bit(face_s->face,
sp[-args].u.string,&sstr,&len,base,
"Image.TTF.FaceInstance->ponder()");
break;
case 1:
ttf_please_translate_16bit(face_s->face,
sp[-args].u.string,&sstr,&len,base,
"Image.TTF.FaceInstance->ponder()");
break;
default:
Pike_error("Too wide string for truetype\n");
}
pop_n_elems(args);
for (i=0; i<len; i++)
{
TT_Glyph glyph;
TT_Glyph_Metrics metrics;
int ind;
ind=sstr[i];
/* fprintf(stderr,"glyph: %d\n",ind); */
if ((res=TT_New_Glyph(face_s->face,&glyph)))
my_tt_error("Image.TTF.FaceInstance->ponder()","TT_New_Glyph: ",res);
if ((res=TT_Load_Glyph(face_i->instance, glyph,
(TT_UShort)ind, (TT_UShort)face_i->load_flags)))
my_tt_error("Image.TTF.FaceInstance->ponder()","TT_Load_Glyph: ",res);
if ((res=TT_Get_Glyph_Metrics(glyph,&metrics)))
my_tt_error("Image.TTF.FaceInstance->ponder()",
"TT_Get_Glyph_Metrics: ",res);
if (pos+metrics.bbox.xMin<xmin) xmin=pos+metrics.bbox.xMin;
if (pos+metrics.bbox.xMax>xmax) xmax=pos+metrics.bbox.xMax;
pos+=metrics.advance; /* insert kerning stuff here */
/* fprintf(stderr,"bbox: (%f,%f)-(%f,%f)\n", */
/* metrics.bbox.xMin/64.0, */
/* metrics.bbox.yMin/64.0, */
/* metrics.bbox.xMax/64.0, */
/* metrics.bbox.yMax/64.0); */
/* fprintf(stderr,"BearingX: %f\n",metrics.bearingX/64.0); */
/* fprintf(stderr,"BearingY: %f\n",metrics.bearingY/64.0); */
/* fprintf(stderr,"advance: %f\n",metrics.advance/64.0); */
/* fprintf(stderr,"\n"); */
}
free(sstr);
/* fprintf(stderr,"xmin: %f\n",xmin/64.0); */
/* fprintf(stderr,"xmax: %f\n",xmax/64.0); */
ref_push_object(THISOBJ);
}
static void image_ttf_faceinstance_write(INT32 args)
{
int **sstr;
int *slen;
int i,res=0,base=0,a;
struct image_ttf_face_struct *face_s;
struct image_ttf_faceinstance_struct *face_i=THISi;
TT_CharMap charMap;
TT_Kerning kerning;
int has_kerning = 0;
char *errs=NULL;
int scalefactor=0;
int xmin=1000,xmax=-1000,pos=0,ypos;
int width,height,mod;
unsigned char* pixmap;
int maxcharwidth = 0;
if (!(face_s=(struct image_ttf_face_struct*)
get_storage(THISi->faceobj,image_ttf_face_program)))
Pike_error("Image.TTF.FaceInstance->write(): lost Face\n");
if(!TT_Get_Kerning_Directory( face_s->face, &kerning ))
{
TT_Instance_Metrics metrics;
/* fprintf(stderr, "has kerning!\n"); */
has_kerning = 1;
if(TT_Get_Instance_Metrics( face_i->instance, &metrics ))
Pike_error("Nope. No way.\n");
scalefactor = metrics.x_scale;
/* fprintf(stderr, "offset=%d\n", (int)metrics.x_scale); */
}
if (args && sp[-1].type==T_INT)
{
base=sp[-1].u.integer;
args--;
pop_stack();
}
if (!args)
{
push_empty_string();
args=1;
}
ttf_get_nice_charmap(face_s->face,&charMap,
"Image.TTF.FaceInstance->write()");
sstr=alloca(args*sizeof(int*));
slen=alloca(args*sizeof(int));
/* first pass: figure out total bounding box */
for (a=0; a<args; a++)
{
char *errs=NULL;
TT_Glyph_Metrics metrics;
if (sp[a-args].type!=T_STRING)
Pike_error("Image.TTF.FaceInstance->write(): illegal argument %d\n",a+1);
switch(sp[a-args].u.string->size_shift)
{
case 0:
ttf_translate_8bit(charMap,(unsigned char*)sp[a-args].u.string->str,
sstr+a,
DO_NOT_WARN(slen[a]=sp[a-args].u.string->len),
base);
break;
case 1:
ttf_translate_16bit(charMap,(unsigned short*)sp[a-args].u.string->str,
sstr+a,
DO_NOT_WARN(slen[a]=sp[a-args].u.string->len),
base);
break;
case 2:
Pike_error("Too wide string for truetype\n");
break;
}
pos=0;
for (i=0; i<slen[a]; i++)
{
TT_Glyph glyph;
int ind;
ind=sstr[a][i];
/* fprintf(stderr,"glyph: %d\n",ind); */
if ((res=TT_New_Glyph(face_s->face,&glyph)))
{ errs="TT_New_Glyph: "; break; }
if ((res=TT_Load_Glyph(face_i->instance, glyph, (TT_UShort)ind,
(TT_UShort)face_i->load_flags)))
{ errs="TT_Load_Glyph: "; break; }
if ((res=TT_Get_Glyph_Metrics(glyph,&metrics)))
{ errs="TT_Get_Glyph_Metrics: "; break; }
if (pos+metrics.bbox.xMin<xmin)
xmin=pos+metrics.bbox.xMin;
if (pos+metrics.bbox.xMax>xmax)
xmax=pos+metrics.bbox.xMax;
if((metrics.bbox.xMax-(metrics.bbox.xMin<0?metrics.bbox.xMin:0))
>maxcharwidth)
maxcharwidth =
(metrics.bbox.xMax-(metrics.bbox.xMin<0?metrics.bbox.xMin:0));
pos+=metrics.advance;
if(has_kerning && i<slen[a]-1)
{
int kern = find_kerning( kerning, ind, sstr[a][i+1] );
pos += DOUBLE_TO_INT(kern * (scalefactor/65535.0));
}
if ((res=TT_Done_Glyph(glyph)))
{ errs="TT_Done_Glyph: "; break; }
}
pos -= metrics.advance;
pos += metrics.bbox.xMax-metrics.bbox.xMin;
if (pos>xmax)
xmax=pos;
if (errs)
{
for (i=0; i<a; i++) free(sstr[i]);
my_tt_error("Image.TTF.FaceInstance->write()",errs,res);
}
}
pop_n_elems(args);
/* fprintf(stderr,"xmin=%f xmax=%f\n",xmin/64.0,xmax/64.0); */
xmin&=~63;
width=((xmax-xmin+63)>>6)+4;
height=face_i->height*args;
mod=(4-(maxcharwidth&3))&3;
if (width<1) width=1;
if ((pixmap=malloc((maxcharwidth+mod)*face_i->height)))
{
/* second pass: write the stuff */
TT_Raster_Map rastermap;
struct object *o;
struct image *img;
rgb_group *d;
rastermap.rows=face_i->height;
rastermap.cols=rastermap.width=maxcharwidth+mod;
rastermap.flow=TT_Flow_Down;
rastermap.bitmap=pixmap;
rastermap.size=rastermap.cols*rastermap.rows;
ypos=0;
/* fprintf(stderr,"rastermap.rows=%d cols=%d width=%d\n", */
/* rastermap.rows,rastermap.cols,rastermap.width); */
push_int(width);
push_int(height);
o=clone_object(image_program,2);
img=(struct image*)get_storage(o,image_program);
d=img->img;
for (a=0; a<args; a++)
{
pos=-xmin;
for (i=0; i<slen[a]; i++)
{
int sw, xp;
TT_Glyph glyph;
TT_Glyph_Metrics metrics;
int ind, x, y;
ind=sstr[a][i];
/* fprintf(stderr,"glyph: %d\n",ind); */
if ((res=TT_New_Glyph(face_s->face,&glyph)))
{ errs="TT_New_Glyph: "; break; }
if ((res=TT_Load_Glyph(face_i->instance, glyph, (TT_UShort)ind,
(TT_UShort)face_i->load_flags)))
{ errs="TT_Load_Glyph: "; break; }
if ((res=TT_Get_Glyph_Metrics(glyph,&metrics)))
{ errs="TT_Get_Glyph_Metrics: "; break; }
MEMSET(pixmap,0,rastermap.size);
if ((res=TT_Get_Glyph_Pixmap(glyph,
&rastermap,
-metrics.bbox.xMin
/*+pos%64*/,
face_i->height*64-
face_i->trans)))
{ errs="TT_Get_Glyph_Pixmap: "; break; }
sw = metrics.bbox.xMax-(metrics.bbox.xMin<0?metrics.bbox.xMin:0);
/* Copy source pixmap to destination image object. */
for(y=0; y<face_i->height; y++)
{
unsigned int s;
unsigned char * source = pixmap+rastermap.width*y;
rgb_group *dt=d+(ypos+y)*width+(xp=(metrics.bbox.xMin+pos)/64);
for(x=0; x<sw && xp<width; x++,xp++,source++,dt++)
if(xp<0 || !(s = *source))
continue;
else if((s=dt->r+s) < 256)
dt->r=dt->g=dt->b=s;
else
dt->r=dt->g=dt->b=255;
}
pos+=metrics.advance;
/* if(metrics.bbox.xMin < 0) */
/* pos += metrics.bbox.xMin; */
if(has_kerning && i<slen[a]-1)
{
int kern = find_kerning( kerning, sstr[a][i], sstr[a][i+1] );
pos += DOUBLE_TO_INT(kern * (scalefactor/65535.0));
/* fprintf(stderr, "Adjusted is %d\n", */
/* (int)(kern * (scalefactor/65535.0))); */
}
if ((res=TT_Done_Glyph(glyph)))
{ errs="TT_Done_Glyph: "; break; }
}
if (errs)
{
for (a=0; a<args; a++) free(sstr[a]);
free(pixmap);
free_object(o);
my_tt_error("Image.TTF.FaceInstance->write()",errs,res);
}
ypos+=face_i->height;
}
free(pixmap);
push_object(o);
}
else
{
Pike_error("Image.TTF.FaceInstance->write(): out of memory\n");
}
for (a=0; a<args; a++)
free(sstr[a]);
}
static
int
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 %p, inst %d, j %lu (%c))\n",
handle,inst,j, (int)((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[TT_HASH(j)].glyph)
&& handle->instanceh[inst].glyphs[TT_HASH(j)].ch == j) {
mm_log((1,"i_tt_get_glyph: %lu 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 ( LTT_hinted ) load_flags |= TTLOAD_HINT_GLYPH;
if ( !TT_VALID(handle->char_map) ) {
code = (j - ' ' + 1) < 0 ? 0 : (j - ' ' + 1);
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[TT_HASH(j)].glyph)) ) {
mm_log((1, "Cannot allocate and load glyph: error %#x.\n", (unsigned)error ));
i_push_error(error, "TT_New_Glyph()");
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 %#x.\n", (unsigned)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;
i_push_error(error, "TT_Load_Glyph()");
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[TT_HASH(j)].glyph,
&handle->instanceh[inst].gmetrics[TT_HASH(j)] );
if (error) {
mm_log((1, "TT_Get_Glyph_Metrics: error %#x.\n", (unsigned)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;
i_push_error(error, "TT_Get_Glyph_Metrics()");
return 0;
}
return 1;
}
