uint32_t get_ft2_text_width(wchar_t *text, struct ft2_source *srcdata) { FT_GlyphSlot slot = 0; FT_UInt glyph_index = 0; uint32_t w = 0, max_w = 0; size_t len; if (!text) return 0; len = wcslen(text); for (size_t i = 0; i < len; i++) { //遇到换行,重置当前行宽度 if (text[i] == L'\n') { w = 0; continue; } FT_Face curFace; glyph_index = FT_Get_Char_Index_Fallback(srcdata, &curFace, text[i]); if (curFace == 0) continue; slot = curFace->glyph; FT_Load_Glyph(curFace, glyph_index, FT_LOAD_DEFAULT); if (slot->format == FT_GLYPH_FORMAT_OUTLINE && srcdata->fake_bold) FT_Outline_EmboldenXY(&slot->outline, 0x80, 0x40); w += slot->advance.x >> 6; if (w > max_w) max_w = w; } FT_Vector size; size.x = max_w; size.y = srcdata->max_h; FT_Vector tmp = size; FT_Vector_Transform(&size, &srcdata->transform_matrix); FT_Vector_Transform(&tmp, &srcdata->fallback_transform); max_w = size.x; if (max_w < tmp.x) max_w = tmp.x; if (max_w > texbuf_w) return texbuf_w; else return max_w; }
/* load a glyph into the slot and compute bearing */ static FT_Error set_glyph(FT_Face face, FT_UInt codepoint, FT_UInt *previous, FT_Vector *pen, FT_Bool vertical, FT_Matrix *rotation, FT_Vector *bearing, FT_Int halign) { FT_Error error; FT_UInt glyph_index; glyph_index = FT_Get_Char_Index(face, codepoint); if (FT_HAS_KERNING(face) && *previous && !vertical && glyph_index) { FT_Vector delta; FT_Get_Kerning(face, *previous, glyph_index, FT_KERNING_DEFAULT, &delta); FT_Vector_Transform(&delta, rotation); pen->x += delta.x; pen->y += delta.y; } error = FT_Load_Glyph(face, glyph_index, vertical ? FT_LOAD_VERTICAL_LAYOUT : FT_LOAD_DEFAULT); if (error) { gks_perror("glyph could not be loaded: %c", codepoint); return 1; } error = FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL); if (error) { gks_perror("glyph could not be rendered: %c", codepoint); return 1; } *previous = glyph_index; bearing->x = face->glyph->metrics.horiBearingX; bearing->y = 0; if (vertical) { if (halign == GKS_K_TEXT_HALIGN_RIGHT) { bearing->x += face->glyph->metrics.width; } else if (halign == GKS_K_TEXT_HALIGN_CENTER) { bearing->x += face->glyph->metrics.width / 2; } if (bearing->x != 0) FT_Vector_Transform(bearing, rotation); bearing->x = 64 * face->glyph->bitmap_left - bearing->x; bearing->y = 64 * face->glyph->bitmap_top - bearing->y; } else { if (bearing->x != 0) FT_Vector_Transform(bearing, rotation); pen->x -= bearing->x; pen->y -= bearing->y; bearing->x = 64 * face->glyph->bitmap_left; bearing->y = 64 * face->glyph->bitmap_top; } return 0; }
FT_Glyph_Transform( FT_Glyph glyph, FT_Matrix* matrix, FT_Vector* delta ) { const FT_Glyph_Class* clazz; FT_Error error = FT_Err_Ok; if ( !glyph || !glyph->clazz ) error = FT_Err_Invalid_Argument; else { clazz = glyph->clazz; if ( clazz->glyph_transform ) { /* transform glyph image */ clazz->glyph_transform( glyph, matrix, delta ); /* transform advance vector */ if ( matrix ) FT_Vector_Transform( &glyph->advance, matrix ); } else error = FT_Err_Invalid_Glyph_Format; } return error; }
FT_EXPORT_DEF( void ) FT_Outline_Transform( FT_Outline* outline, FT_Matrix* matrix ) { FT_Vector* vec = outline->points; FT_Vector* limit = vec + outline->n_points; for ( ; vec < limit; vec++ ) FT_Vector_Transform( vec, matrix ); }
void SkScalerContext_CairoFT::fixVerticalLayoutBearing(FT_GlyphSlot glyph) { FT_Vector vector; vector.x = glyph->metrics.vertBearingX - glyph->metrics.horiBearingX; vector.y = -glyph->metrics.vertBearingY - glyph->metrics.horiBearingY; if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) { if (fHaveShape) { FT_Vector_Transform(&vector, &fShapeMatrix); } FT_Outline_Translate(&glyph->outline, vector.x, vector.y); } else if (glyph->format == FT_GLYPH_FORMAT_BITMAP) { glyph->bitmap_left += SkFDot6Floor(vector.x); glyph->bitmap_top += SkFDot6Floor(vector.y); } }
FT_Outline_Transform( const FT_Outline* outline, const FT_Matrix* matrix ) { FT_Vector* vec; FT_Vector* limit; if ( !outline || !matrix ) return; vec = outline->points; limit = vec + outline->n_points; for ( ; vec < limit; vec++ ) FT_Vector_Transform( vec, matrix ); }
void FT::drawString(ft_pixmap *pixmap, ft_string *string) { FT_Vector where; ft_char *glyph; int n, error; where.x = -string->bbox.xMin + 1; where.y = string->bbox.yMax; glyph = string->glyphs; for (n = 0; n < string->num_glyphs; ++n, ++glyph) { FT_Glyph image; FT_Vector vec; /* 26.6 */ FT_BitmapGlyph bit; // make copy to transform if (!glyph->image) { fprintf(stderr, "no image\n"); continue; } error = FT_Glyph_Copy(glyph->image, &image); if (error) { fprintf(stderr, "couldn't copy image\n"); continue; } /* transform it */ vec = glyph->pos; FT_Vector_Transform(&vec, &string->transform); bit = (FT_BitmapGlyph)image; drawBitmap(pixmap, bit, where); FT_Done_Glyph(image); } }
ft_string *FT::createString(ft_pixmap *pixmap, const char *text) { FT_GlyphSlot slot = pixmap->face->glyph; /* a small shortcut */ FT_Bool use_kerning; FT_UInt previous; FT_Vector ft_pen; ft_string *string; ft_char *glyph; /* current glyph in table */ int n, error; ft_pen.x = 0; /* start at (0,0) !! */ ft_pen.y = 0; string = new ft_string(); string->width = 0; string->height = 0; string->count = strlen(text); string->glyphs = new ft_char[string->count]; string->num_glyphs = 0; string->transform.xx = (FT_Fixed)(0x10000); string->transform.xy = (FT_Fixed)(0); string->transform.yx = (FT_Fixed)(0); string->transform.yy = (FT_Fixed)(0x10000); use_kerning = FT_HAS_KERNING(pixmap->face); previous = 0; glyph = string->glyphs; for (n = 0; n < string->count; n++, glyph++) { FT_Vector vec; /* initialize each struct ft_char_s */ glyph->index = 0; glyph->pos.x = 0; glyph->pos.y = 0; glyph->image = NULL; glyph->index = FT_Get_Char_Index(pixmap->face, text[n]); /* compute glyph origin */ if (use_kerning && previous && glyph->index) { FT_Vector kerning; FT_Get_Kerning(pixmap->face, previous, glyph->index, ft_kerning_default, &kerning); ft_pen.x += kerning.x; ft_pen.y += kerning.y; } /* store current pen position */ glyph->pos.x = ft_pen.x; glyph->pos.y = ft_pen.y; /* load the glyph image (in its native format) */ /* for now, we take a monochrome glyph bitmap */ error = FT_Load_Glyph(pixmap->face, glyph->index, FT_LOAD_DEFAULT); if (error) { fprintf(stderr, "couldn't load glyph: %c\n", text[n]); continue; } error = FT_Get_Glyph(slot, &glyph->image); if (error) { fprintf(stderr, "couldn't get glyph from slot: %c\n", text[n]); continue; } ft_pen.x += slot->advance.x; ft_pen.y += slot->advance.y; /* translate glyph */ vec = glyph->pos; FT_Vector_Transform(&vec, &string->transform); error = FT_Glyph_Transform(glyph->image, &string->transform, &vec); if (error) { fprintf(stderr, "couldn't transform glyph\n"); continue; } /* convert to a bitmap - destroy native image */ error = FT_Glyph_To_Bitmap(&glyph->image, ft_render_mode_normal, 0, 1); if (error) { fprintf(stderr, "couldn't convert glyph to bitmap\n"); continue; } /* increment number of glyphs */ previous = glyph->index; string->num_glyphs++; } computeBBox(string); pixmap->width = string->bbox.xMax - string->bbox.xMin; pixmap->height = string->bbox.yMax - string->bbox.yMin; pixmap->rowstride = pixmap->width * FT_BYTES_PER_PIXEL; int size = pixmap->height * pixmap->rowstride; pixmap->buffer = new unsigned char[size]; printf("-----%d %d: %d\n", pixmap->width, pixmap->height, size); memset(pixmap->buffer, 0x00, size); return string; }
af_loader_load_glyph( AF_Loader loader, AF_Module module, FT_Face face, FT_UInt glyph_index, FT_Int32 load_flags ) { FT_Error error; FT_Size size = face->size; FT_Size_Internal size_internal = size->internal; FT_GlyphSlot slot = face->glyph; FT_Slot_Internal slot_internal = slot->internal; FT_GlyphLoader gloader = slot_internal->loader; AF_GlyphHints hints = loader->hints; AF_ScalerRec scaler; AF_StyleMetrics style_metrics; FT_UInt style_options = AF_STYLE_NONE_DFLT; AF_StyleClass style_class; AF_WritingSystemClass writing_system_class; if ( !size ) return FT_THROW( Invalid_Size_Handle ); FT_ZERO( &scaler ); if ( !size_internal->autohint_metrics.x_scale || size_internal->autohint_mode != FT_LOAD_TARGET_MODE( load_flags ) ) { /* switching between hinting modes usually means different scaling */ /* values; this later on enforces recomputation of everything */ /* related to the current size */ size_internal->autohint_mode = FT_LOAD_TARGET_MODE( load_flags ); size_internal->autohint_metrics = size->metrics; #ifdef AF_CONFIG_OPTION_TT_SIZE_METRICS { FT_Size_Metrics* size_metrics = &size_internal->autohint_metrics; /* set metrics to integer values and adjust scaling accordingly; */ /* this is the same setup as with TrueType fonts, cf. function */ /* `tt_size_reset' in file `ttobjs.c' */ size_metrics->ascender = FT_PIX_ROUND( FT_MulFix( face->ascender, size_metrics->y_scale ) ); size_metrics->descender = FT_PIX_ROUND( FT_MulFix( face->descender, size_metrics->y_scale ) ); size_metrics->height = FT_PIX_ROUND( FT_MulFix( face->height, size_metrics->y_scale ) ); size_metrics->x_scale = FT_DivFix( size_metrics->x_ppem << 6, face->units_per_EM ); size_metrics->y_scale = FT_DivFix( size_metrics->y_ppem << 6, face->units_per_EM ); size_metrics->max_advance = FT_PIX_ROUND( FT_MulFix( face->max_advance_width, size_metrics->x_scale ) ); } #endif /* AF_CONFIG_OPTION_TT_SIZE_METRICS */ } /* * TODO: This code currently doesn't support fractional advance widths, * i.e., placing hinted glyphs at anything other than integer * x-positions. This is only relevant for the warper code, which * scales and shifts glyphs to optimize blackness of stems (hinting on * the x-axis by nature places things on pixel integers, hinting on the * y-axis only, i.e., LIGHT mode, doesn't touch the x-axis). The delta * values of the scaler would need to be adjusted. */ scaler.face = face; scaler.x_scale = size_internal->autohint_metrics.x_scale; scaler.x_delta = 0; scaler.y_scale = size_internal->autohint_metrics.y_scale; scaler.y_delta = 0; scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags ); scaler.flags = 0; /* note that the fallback style can't be changed anymore */ /* after the first call of `af_loader_load_glyph' */ error = af_loader_reset( loader, module, face ); if ( error ) goto Exit; #ifdef FT_OPTION_AUTOFIT2 /* XXX: undocumented hook to activate the latin2 writing system. */ if ( load_flags & ( 1UL << 20 ) ) style_options = AF_STYLE_LTN2_DFLT; #endif /* * Glyphs (really code points) are assigned to scripts. Script * analysis is done lazily: For each glyph that passes through here, * the corresponding script analyzer is called, but returns immediately * if it has been run already. */ error = af_face_globals_get_metrics( loader->globals, glyph_index, style_options, &style_metrics ); if ( error ) goto Exit; style_class = style_metrics->style_class; writing_system_class = af_writing_system_classes[style_class->writing_system]; loader->metrics = style_metrics; if ( writing_system_class->style_metrics_scale ) writing_system_class->style_metrics_scale( style_metrics, &scaler ); else style_metrics->scaler = scaler; if ( writing_system_class->style_hints_init ) { error = writing_system_class->style_hints_init( hints, style_metrics ); if ( error ) goto Exit; } /* * Do the main work of `af_loader_load_glyph'. Note that we never have * to deal with composite glyphs as those get loaded into * FT_GLYPH_FORMAT_OUTLINE by the recursed `FT_Load_Glyph' function. * In the rare cases where FT_LOAD_NO_RECURSE is set, it implies * FT_LOAD_NO_SCALE and as such the auto-hinter is never called. */ load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_IGNORE_TRANSFORM | FT_LOAD_LINEAR_DESIGN; load_flags &= ~FT_LOAD_RENDER; error = FT_Load_Glyph( face, glyph_index, load_flags ); if ( error ) goto Exit; /* * Apply stem darkening (emboldening) here before hints are applied to * the outline. Glyphs are scaled down proportionally to the * emboldening so that curve points don't fall outside their * precomputed blue zones. * * Any emboldening done by the font driver (e.g., the CFF driver) * doesn't reach here because the autohinter loads the unprocessed * glyphs in font units for analysis (functions `af_*_metrics_init_*') * and then above to prepare it for the rasterizers by itself, * independently of the font driver. So emboldening must be done here, * within the autohinter. * * All glyphs to be autohinted pass through here one by one. The * standard widths can therefore change from one glyph to the next, * depending on what script a glyph is assigned to (each script has its * own set of standard widths and other metrics). The darkening amount * must therefore be recomputed for each size and * `standard_{vertical,horizontal}_width' change. * * Ignore errors and carry on without emboldening. * */ /* stem darkening only works well in `light' mode */ if ( scaler.render_mode == FT_RENDER_MODE_LIGHT && ( !face->internal->no_stem_darkening || ( face->internal->no_stem_darkening < 0 && !module->no_stem_darkening ) ) ) af_loader_embolden_glyph_in_slot( loader, face, style_metrics ); loader->transformed = slot_internal->glyph_transformed; if ( loader->transformed ) { FT_Matrix inverse; loader->trans_matrix = slot_internal->glyph_matrix; loader->trans_delta = slot_internal->glyph_delta; inverse = loader->trans_matrix; if ( !FT_Matrix_Invert( &inverse ) ) FT_Vector_Transform( &loader->trans_delta, &inverse ); } switch ( slot->format ) { case FT_GLYPH_FORMAT_OUTLINE: /* translate the loaded glyph when an internal transform is needed */ if ( loader->transformed ) FT_Outline_Translate( &slot->outline, loader->trans_delta.x, loader->trans_delta.y ); /* compute original horizontal phantom points */ /* (and ignore vertical ones) */ loader->pp1.x = hints->x_delta; loader->pp1.y = hints->y_delta; loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance, hints->x_scale ) + hints->x_delta; loader->pp2.y = hints->y_delta; /* be sure to check for spacing glyphs */ if ( slot->outline.n_points == 0 ) goto Hint_Metrics; /* now load the slot image into the auto-outline */ /* and run the automatic hinting process */ if ( writing_system_class->style_hints_apply ) { error = writing_system_class->style_hints_apply( glyph_index, hints, &gloader->base.outline, style_metrics ); if ( error ) goto Exit; } /* we now need to adjust the metrics according to the change in */ /* width/positioning that occurred during the hinting process */ if ( scaler.render_mode != FT_RENDER_MODE_LIGHT ) { AF_AxisHints axis = &hints->axis[AF_DIMENSION_HORZ]; if ( axis->num_edges > 1 && AF_HINTS_DO_ADVANCE( hints ) ) { AF_Edge edge1 = axis->edges; /* leftmost edge */ AF_Edge edge2 = edge1 + axis->num_edges - 1; /* rightmost edge */ FT_Pos old_rsb = loader->pp2.x - edge2->opos; /* loader->pp1.x is always zero at this point of time */ FT_Pos old_lsb = edge1->opos; /* - loader->pp1.x */ FT_Pos new_lsb = edge1->pos; /* remember unhinted values to later account */ /* for rounding errors */ FT_Pos pp1x_uh = new_lsb - old_lsb; FT_Pos pp2x_uh = edge2->pos + old_rsb; /* prefer too much space over too little space */ /* for very small sizes */ if ( old_lsb < 24 ) pp1x_uh -= 8; if ( old_rsb < 24 ) pp2x_uh += 8; loader->pp1.x = FT_PIX_ROUND( pp1x_uh ); loader->pp2.x = FT_PIX_ROUND( pp2x_uh ); if ( loader->pp1.x >= new_lsb && old_lsb > 0 ) loader->pp1.x -= 64; if ( loader->pp2.x <= edge2->pos && old_rsb > 0 ) loader->pp2.x += 64; slot->lsb_delta = loader->pp1.x - pp1x_uh; slot->rsb_delta = loader->pp2.x - pp2x_uh; } else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x + hints->xmin_delta ); loader->pp2.x = FT_PIX_ROUND( pp2x + hints->xmax_delta ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } } /* `light' mode uses integer advance widths */ /* but sets `lsb_delta' and `rsb_delta' */ else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x ); loader->pp2.x = FT_PIX_ROUND( pp2x ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } break; default: /* we don't support other formats (yet?) */ error = FT_THROW( Unimplemented_Feature ); } Hint_Metrics: { FT_BBox bbox; FT_Vector vvector; vvector.x = slot->metrics.vertBearingX - slot->metrics.horiBearingX; vvector.y = slot->metrics.vertBearingY - slot->metrics.horiBearingY; vvector.x = FT_MulFix( vvector.x, style_metrics->scaler.x_scale ); vvector.y = FT_MulFix( vvector.y, style_metrics->scaler.y_scale ); /* transform the hinted outline if needed */ if ( loader->transformed ) { FT_Outline_Transform( &gloader->base.outline, &loader->trans_matrix ); FT_Vector_Transform( &vvector, &loader->trans_matrix ); } /* we must translate our final outline by -pp1.x and compute */ /* the new metrics */ if ( loader->pp1.x ) FT_Outline_Translate( &gloader->base.outline, -loader->pp1.x, 0 ); FT_Outline_Get_CBox( &gloader->base.outline, &bbox ); bbox.xMin = FT_PIX_FLOOR( bbox.xMin ); bbox.yMin = FT_PIX_FLOOR( bbox.yMin ); bbox.xMax = FT_PIX_CEIL( bbox.xMax ); bbox.yMax = FT_PIX_CEIL( bbox.yMax ); slot->metrics.width = bbox.xMax - bbox.xMin; slot->metrics.height = bbox.yMax - bbox.yMin; slot->metrics.horiBearingX = bbox.xMin; slot->metrics.horiBearingY = bbox.yMax; slot->metrics.vertBearingX = FT_PIX_FLOOR( bbox.xMin + vvector.x ); slot->metrics.vertBearingY = FT_PIX_FLOOR( bbox.yMax + vvector.y ); /* for mono-width fonts (like Andale, Courier, etc.) we need */ /* to keep the original rounded advance width; ditto for */ /* digits if all have the same advance width */ if ( scaler.render_mode != FT_RENDER_MODE_LIGHT && ( FT_IS_FIXED_WIDTH( slot->face ) || ( af_face_globals_is_digit( loader->globals, glyph_index ) && style_metrics->digits_have_same_width ) ) ) { slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, style_metrics->scaler.x_scale ); /* Set delta values to 0. Otherwise code that uses them is */ /* going to ruin the fixed advance width. */ slot->lsb_delta = 0; slot->rsb_delta = 0; } else { /* non-spacing glyphs must stay as-is */ if ( slot->metrics.horiAdvance ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; } slot->metrics.vertAdvance = FT_MulFix( slot->metrics.vertAdvance, style_metrics->scaler.y_scale ); slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance ); slot->metrics.vertAdvance = FT_PIX_ROUND( slot->metrics.vertAdvance ); slot->format = FT_GLYPH_FORMAT_OUTLINE; } Exit: return error; }
unsigned char *gks_ft_get_bitmap(int *x, int *y, int *width, int *height, gks_state_list_t *gkss, const char *text, int length) { FT_Face face; /* font face */ FT_Vector pen; /* glyph position */ FT_BBox bb; /* bounding box */ FT_Vector bearing; /* individual glyph translation */ FT_UInt previous; /* previous glyph index */ FT_Vector spacing; /* amount of additional space between glyphs */ FT_ULong textheight; /* textheight in FreeType convention */ FT_Error error; /* error code */ FT_Matrix rotation; /* text rotation matrix */ FT_UInt size; /* number of pixels of the bitmap */ FT_String *file; /* concatenated font path */ const FT_String *font, *prefix; /* font file name and directory */ FT_UInt *unicode_string; /* unicode text string */ FT_Int halign, valign; /* alignment */ FT_Byte *mono_bitmap = NULL; /* target for rendered text */ FT_Int num_glyphs; /* number of glyphs */ FT_Vector align; FT_Bitmap ftbitmap; FT_UInt codepoint; int i, textfont, dx, dy, value, pos_x, pos_y; unsigned int j, k; double angle; const int windowwidth = *width; const int direction = (gkss->txp <= 3 && gkss->txp >= 0 ? gkss->txp : 0); const FT_Bool vertical = (direction == GKS_K_TEXT_PATH_DOWN || direction == GKS_K_TEXT_PATH_UP); const FT_String *suffix_type1 = ".afm"; if (!init) gks_ft_init(); if (gkss->txal[0] != GKS_K_TEXT_HALIGN_NORMAL) { halign = gkss->txal[0]; } else if (vertical) { halign = GKS_K_TEXT_HALIGN_CENTER; } else if (direction == GKS_K_TEXT_PATH_LEFT) { halign = GKS_K_TEXT_HALIGN_RIGHT; } else { halign = GKS_K_TEXT_HALIGN_LEFT; } valign = gkss->txal[1]; if (valign != GKS_K_TEXT_VALIGN_NORMAL) { valign = gkss->txal[1]; } else { valign = GKS_K_TEXT_VALIGN_BASE; } textfont = abs(gkss->txfont); if (textfont >= 101 && textfont <= 131) textfont -= 100; else if (textfont > 1 && textfont <= 32) textfont = map[textfont - 1]; else textfont = 9; textfont = textfont - 1; font = gks_font_list[textfont]; if (font_face_cache[textfont] == NULL) { prefix = gks_getenv("GKS_FONTPATH"); if (prefix == NULL) { prefix = gks_getenv("GRDIR"); if (prefix == NULL) prefix = GRDIR; } file = (FT_String *) malloc(strlen(prefix) + 7 + strlen(font) + 4 + 1); strcpy(file, prefix); #ifndef _WIN32 strcat(file, "/fonts/"); #else strcat(file, "\\FONTS\\"); #endif strcat(file, font); strcat(file, ".pfb"); error = FT_New_Face(library, file, 0, &face); if (error == FT_Err_Unknown_File_Format) { gks_perror("unknown file format: %s", file); return NULL; } else if (error) { gks_perror("could not open font file: %s", file); return NULL; } if (strcmp(FT_Get_X11_Font_Format(face), "Type 1") == 0) { strcpy(file, prefix); #ifndef _WIN32 strcat(file, "/fonts/"); #else strcat(file, "\\FONTS\\"); #endif strcat(file, font); strcat(file, suffix_type1); FT_Attach_File(face, file); } free(file); font_face_cache[textfont] = face; } else { face = font_face_cache[textfont]; } num_glyphs = length; unicode_string = (FT_UInt *) malloc(length * sizeof(FT_UInt) + 1); if (textfont + 1 == 13) { symbol_to_unicode((FT_Bytes)text, unicode_string, num_glyphs); } else { utf_to_unicode((FT_Bytes)text, unicode_string, &num_glyphs); } textheight = nint(gkss->chh * windowwidth * 64 / caps[textfont]); error = FT_Set_Char_Size(face, nint(textheight * gkss->chxp), textheight, 72, 72); if (error) gks_perror("cannot set text height"); if (gkss->chup[0] != 0.0 || gkss->chup[1] != 0.0) { angle = atan2f(gkss->chup[1], gkss->chup[0]) - M_PI / 2; rotation.xx = nint( cosf(angle) * 0x10000L); rotation.xy = nint(-sinf(angle) * 0x10000L); rotation.yx = nint( sinf(angle) * 0x10000L); rotation.yy = nint( cosf(angle) * 0x10000L); FT_Set_Transform(face, &rotation, NULL); } else { FT_Set_Transform(face, NULL, NULL); } spacing.x = spacing.y = 0; if (gkss->chsp != 0.0) { error = FT_Load_Glyph(face, FT_Get_Char_Index(face, ' '), vertical ? FT_LOAD_VERTICAL_LAYOUT : FT_LOAD_DEFAULT); if (!error) { spacing.x = nint(face->glyph->advance.x * gkss->chsp); spacing.y = nint(face->glyph->advance.y * gkss->chsp); } else { gks_perror("cannot apply character spacing"); } } bb.xMin = bb.yMin = LONG_MAX; bb.xMax = bb.yMax = LONG_MIN; pen.x = pen.y = 0; previous = 0; for (i = 0; i < num_glyphs; i++) { codepoint = unicode_string[direction == GKS_K_TEXT_PATH_LEFT ? (num_glyphs - 1 - i) : i]; error = set_glyph(face, codepoint, &previous, &pen, vertical, &rotation, &bearing, halign); if (error) continue; bb.xMin = ft_min(bb.xMin, pen.x + bearing.x); bb.xMax = ft_max(bb.xMax, pen.x + bearing.x + 64*face->glyph->bitmap.width); bb.yMin = ft_min(bb.yMin, pen.y + bearing.y - 64*face->glyph->bitmap.rows); bb.yMax = ft_max(bb.yMax, pen.y + bearing.y); if (direction == GKS_K_TEXT_PATH_DOWN) { pen.x -= face->glyph->advance.x + spacing.x; pen.y -= face->glyph->advance.y + spacing.y; } else { pen.x += face->glyph->advance.x + spacing.x; pen.y += face->glyph->advance.y + spacing.y; } } *width = (int)((bb.xMax - bb.xMin) / 64); *height = (int)((bb.yMax - bb.yMin) / 64); if (bb.xMax <= bb.xMin || bb.yMax <= bb.yMin) { gks_perror("invalid bitmap size"); free(unicode_string); return NULL; } size = *width * *height; mono_bitmap = (FT_Byte *) safe_realloc(mono_bitmap, size); memset(mono_bitmap, 0, size); pen.x = 0; pen.y = 0; previous = 0; for (i = 0; i < num_glyphs; i++) { bearing.x = bearing.y = 0; codepoint = unicode_string[direction == GKS_K_TEXT_PATH_LEFT ? (num_glyphs - 1 - i) : i]; error = set_glyph(face, codepoint, &previous, &pen, vertical, &rotation, &bearing, halign); if (error) continue; pos_x = ( pen.x + bearing.x - bb.xMin) / 64; pos_y = (-pen.y - bearing.y + bb.yMax) / 64; ftbitmap = face->glyph->bitmap; for (j = 0; j < (unsigned int) ftbitmap.rows; j++) { for (k = 0; k < (unsigned int) ftbitmap.width; k++) { dx = k + pos_x; dy = j + pos_y; value = mono_bitmap[dy * *width + dx]; value += ftbitmap.buffer[j * ftbitmap.pitch + k]; if (value > 255) { value = 255; } mono_bitmap[dy * *width + dx] = value; } } if (direction == GKS_K_TEXT_PATH_DOWN) { pen.x -= face->glyph->advance.x + spacing.x; pen.y -= face->glyph->advance.y + spacing.y; } else { pen.x += face->glyph->advance.x + spacing.x; pen.y += face->glyph->advance.y + spacing.y; } } free(unicode_string); /* Alignment */ if (direction == GKS_K_TEXT_PATH_DOWN) { pen.x += spacing.x; pen.y += spacing.y; } else { pen.x -= spacing.x; pen.y -= spacing.y; } align.x = align.y = 0; if (valign != GKS_K_TEXT_VALIGN_BASE) { align.y = nint(gkss->chh * windowwidth * 64); FT_Vector_Transform(&align, &rotation); if (valign == GKS_K_TEXT_VALIGN_HALF) { align.x = nint(0.5 * align.x); align.y = nint(0.5 * align.y); } else if (valign == GKS_K_TEXT_VALIGN_TOP) { align.x = nint(1.2 * align.x); align.y = nint(1.2 * align.y); } else if (valign == GKS_K_TEXT_VALIGN_BOTTOM) { align.x = nint(-0.2 * align.x); align.y = nint(-0.2 * align.y); } } if (!vertical && halign != GKS_K_TEXT_HALIGN_LEFT) { FT_Vector right; right.x = face->glyph->metrics.width + face->glyph->metrics.horiBearingX; right.y = 0; if (right.x != 0) { FT_Vector_Transform(&right, &rotation); } pen.x += right.x - face->glyph->advance.x; pen.y += right.y - face->glyph->advance.y; if (halign == GKS_K_TEXT_HALIGN_CENTER) { align.x += pen.x / 2; align.y += pen.y / 2; } else if (halign == GKS_K_TEXT_HALIGN_RIGHT) { align.x += pen.x; align.y += pen.y; } } *x += (bb.xMin - align.x) / 64; *y += (bb.yMin - align.y) / 64; return mono_bitmap; }
static FT_Error af_loader_load_g( AF_Loader loader, AF_Scaler scaler, FT_UInt glyph_index, FT_Int32 load_flags, FT_UInt depth ) { FT_Error error; FT_Face face = loader->face; FT_GlyphLoader gloader = loader->gloader; AF_ScriptMetrics metrics = loader->metrics; AF_GlyphHints hints = &loader->hints; FT_GlyphSlot slot = face->glyph; FT_Slot_Internal internal = slot->internal; FT_Int32 flags; flags = load_flags | FT_LOAD_LINEAR_DESIGN; error = FT_Load_Glyph( face, glyph_index, flags ); if ( error ) goto Exit; loader->transformed = internal->glyph_transformed; if ( loader->transformed ) { FT_Matrix inverse; loader->trans_matrix = internal->glyph_matrix; loader->trans_delta = internal->glyph_delta; inverse = loader->trans_matrix; FT_Matrix_Invert( &inverse ); FT_Vector_Transform( &loader->trans_delta, &inverse ); } switch ( slot->format ) { case FT_GLYPH_FORMAT_OUTLINE: /* translate the loaded glyph when an internal transform is needed */ if ( loader->transformed ) FT_Outline_Translate( &slot->outline, loader->trans_delta.x, loader->trans_delta.y ); /* copy the outline points in the loader's current */ /* extra points which are used to keep original glyph coordinates */ error = FT_GLYPHLOADER_CHECK_POINTS( gloader, slot->outline.n_points + 4, slot->outline.n_contours ); if ( error ) goto Exit; FT_ARRAY_COPY( gloader->current.outline.points, slot->outline.points, slot->outline.n_points ); FT_ARRAY_COPY( gloader->current.outline.contours, slot->outline.contours, slot->outline.n_contours ); FT_ARRAY_COPY( gloader->current.outline.tags, slot->outline.tags, slot->outline.n_points ); gloader->current.outline.n_points = slot->outline.n_points; gloader->current.outline.n_contours = slot->outline.n_contours; /* compute original horizontal phantom points (and ignore */ /* vertical ones) */ loader->pp1.x = hints->x_delta; loader->pp1.y = hints->y_delta; loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance, hints->x_scale ) + hints->x_delta; loader->pp2.y = hints->y_delta; /* be sure to check for spacing glyphs */ if ( slot->outline.n_points == 0 ) goto Hint_Metrics; /* now load the slot image into the auto-outline and run the */ /* automatic hinting process */ if ( metrics->clazz->script_hints_apply ) metrics->clazz->script_hints_apply( hints, &gloader->current.outline, metrics ); /* we now need to adjust the metrics according to the change in */ /* width/positioning that occurred during the hinting process */ if ( scaler->render_mode != FT_RENDER_MODE_LIGHT ) { FT_Pos old_rsb, old_lsb, new_lsb; FT_Pos pp1x_uh, pp2x_uh; AF_AxisHints axis = &hints->axis[AF_DIMENSION_HORZ]; AF_Edge edge1 = axis->edges; /* leftmost edge */ AF_Edge edge2 = edge1 + axis->num_edges - 1; /* rightmost edge */ if ( axis->num_edges > 1 && AF_HINTS_DO_ADVANCE( hints ) ) { old_rsb = loader->pp2.x - edge2->opos; old_lsb = edge1->opos; new_lsb = edge1->pos; /* remember unhinted values to later account */ /* for rounding errors */ pp1x_uh = new_lsb - old_lsb; pp2x_uh = edge2->pos + old_rsb; /* prefer too much space over too little space */ /* for very small sizes */ if ( old_lsb < 24 ) pp1x_uh -= 8; if ( old_rsb < 24 ) pp2x_uh += 8; loader->pp1.x = FT_PIX_ROUND( pp1x_uh ); loader->pp2.x = FT_PIX_ROUND( pp2x_uh ); if ( loader->pp1.x >= new_lsb && old_lsb > 0 ) loader->pp1.x -= 64; if ( loader->pp2.x <= edge2->pos && old_rsb > 0 ) loader->pp2.x += 64; slot->lsb_delta = loader->pp1.x - pp1x_uh; slot->rsb_delta = loader->pp2.x - pp2x_uh; } else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x ); loader->pp2.x = FT_PIX_ROUND( pp2x ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } } else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x + hints->xmin_delta ); loader->pp2.x = FT_PIX_ROUND( pp2x + hints->xmax_delta ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } /* good, we simply add the glyph to our loader's base */ FT_GlyphLoader_Add( gloader ); break; case FT_GLYPH_FORMAT_COMPOSITE: { FT_UInt nn, num_subglyphs = slot->num_subglyphs; FT_UInt num_base_subgs, start_point; FT_SubGlyph subglyph; start_point = gloader->base.outline.n_points; /* first of all, copy the subglyph descriptors in the glyph loader */ error = FT_GlyphLoader_CheckSubGlyphs( gloader, num_subglyphs ); if ( error ) goto Exit; FT_ARRAY_COPY( gloader->current.subglyphs, slot->subglyphs, num_subglyphs ); gloader->current.num_subglyphs = num_subglyphs; num_base_subgs = gloader->base.num_subglyphs; /* now read each subglyph independently */ for ( nn = 0; nn < num_subglyphs; nn++ ) { FT_Vector pp1, pp2; FT_Pos x, y; FT_UInt num_points, num_new_points, num_base_points; /* gloader.current.subglyphs can change during glyph loading due */ /* to re-allocation -- we must recompute the current subglyph on */ /* each iteration */ subglyph = gloader->base.subglyphs + num_base_subgs + nn; pp1 = loader->pp1; pp2 = loader->pp2; num_base_points = gloader->base.outline.n_points; error = af_loader_load_g( loader, scaler, subglyph->index, load_flags, depth + 1 ); if ( error ) goto Exit; /* recompute subglyph pointer */ subglyph = gloader->base.subglyphs + num_base_subgs + nn; if ( subglyph->flags & FT_SUBGLYPH_FLAG_USE_MY_METRICS ) { pp1 = loader->pp1; pp2 = loader->pp2; } else { loader->pp1 = pp1; loader->pp2 = pp2; } num_points = gloader->base.outline.n_points; num_new_points = num_points - num_base_points; /* now perform the transformation required for this subglyph */ if ( subglyph->flags & ( FT_SUBGLYPH_FLAG_SCALE | FT_SUBGLYPH_FLAG_XY_SCALE | FT_SUBGLYPH_FLAG_2X2 ) ) { FT_Vector* cur = gloader->base.outline.points + num_base_points; FT_Vector* limit = cur + num_new_points; for ( ; cur < limit; cur++ ) FT_Vector_Transform( cur, &subglyph->transform ); } /* apply offset */ if ( !( subglyph->flags & FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES ) ) { FT_Int k = subglyph->arg1; FT_UInt l = subglyph->arg2; FT_Vector* p1; FT_Vector* p2; if ( start_point + k >= num_base_points || l >= (FT_UInt)num_new_points ) { error = AF_Err_Invalid_Composite; goto Exit; } l += num_base_points; /* for now, only use the current point coordinates; */ /* we eventually may consider another approach */ p1 = gloader->base.outline.points + start_point + k; p2 = gloader->base.outline.points + start_point + l; x = p1->x - p2->x; y = p1->y - p2->y; } else { x = FT_MulFix( subglyph->arg1, hints->x_scale ) + hints->x_delta; y = FT_MulFix( subglyph->arg2, hints->y_scale ) + hints->y_delta; x = FT_PIX_ROUND( x ); y = FT_PIX_ROUND( y ); } { FT_Outline dummy = gloader->base.outline; dummy.points += num_base_points; dummy.n_points = (short)num_new_points; FT_Outline_Translate( &dummy, x, y ); } } } break; default: /* we don't support other formats (yet?) */ error = AF_Err_Unimplemented_Feature; } Hint_Metrics: if ( depth == 0 ) { FT_BBox bbox; FT_Vector vvector; vvector.x = slot->metrics.vertBearingX - slot->metrics.horiBearingX; vvector.y = slot->metrics.vertBearingY - slot->metrics.horiBearingY; vvector.x = FT_MulFix( vvector.x, metrics->scaler.x_scale ); vvector.y = FT_MulFix( vvector.y, metrics->scaler.y_scale ); /* transform the hinted outline if needed */ if ( loader->transformed ) { FT_Outline_Transform( &gloader->base.outline, &loader->trans_matrix ); FT_Vector_Transform( &vvector, &loader->trans_matrix ); } #if 1 /* we must translate our final outline by -pp1.x and compute */ /* the new metrics */ if ( loader->pp1.x ) FT_Outline_Translate( &gloader->base.outline, -loader->pp1.x, 0 ); #endif FT_Outline_Get_CBox( &gloader->base.outline, &bbox ); bbox.xMin = FT_PIX_FLOOR( bbox.xMin ); bbox.yMin = FT_PIX_FLOOR( bbox.yMin ); bbox.xMax = FT_PIX_CEIL( bbox.xMax ); bbox.yMax = FT_PIX_CEIL( bbox.yMax ); slot->metrics.width = bbox.xMax - bbox.xMin; slot->metrics.height = bbox.yMax - bbox.yMin; slot->metrics.horiBearingX = bbox.xMin; slot->metrics.horiBearingY = bbox.yMax; slot->metrics.vertBearingX = FT_PIX_FLOOR( bbox.xMin + vvector.x ); slot->metrics.vertBearingY = FT_PIX_FLOOR( bbox.yMax + vvector.y ); /* for mono-width fonts (like Andale, Courier, etc.) we need */ /* to keep the original rounded advance width; ditto for */ /* digits if all have the same advance width */ #if 0 if ( !FT_IS_FIXED_WIDTH( slot->face ) ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; else slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, x_scale ); #else if ( scaler->render_mode != FT_RENDER_MODE_LIGHT && ( FT_IS_FIXED_WIDTH( slot->face ) || ( af_face_globals_is_digit( loader->globals, glyph_index ) && metrics->digits_have_same_width ) ) ) { slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, metrics->scaler.x_scale ); /* Set delta values to 0. Otherwise code that uses them is */ /* going to ruin the fixed advance width. */ slot->lsb_delta = 0; slot->rsb_delta = 0; } else { /* non-spacing glyphs must stay as-is */ if ( slot->metrics.horiAdvance ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; } #endif slot->metrics.vertAdvance = FT_MulFix( slot->metrics.vertAdvance, metrics->scaler.y_scale ); slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance ); slot->metrics.vertAdvance = FT_PIX_ROUND( slot->metrics.vertAdvance ); /* now copy outline into glyph slot */ FT_GlyphLoader_Rewind( internal->loader ); error = FT_GlyphLoader_CopyPoints( internal->loader, gloader ); if ( error ) goto Exit; /* reassign all outline fields except flags to protect them */ slot->outline.n_contours = internal->loader->base.outline.n_contours; slot->outline.n_points = internal->loader->base.outline.n_points; slot->outline.points = internal->loader->base.outline.points; slot->outline.tags = internal->loader->base.outline.tags; slot->outline.contours = internal->loader->base.outline.contours; slot->format = FT_GLYPH_FORMAT_OUTLINE; } Exit: return error; }
cid_slot_load_glyph( FT_GlyphSlot cidglyph, /* CID_GlyphSlot */ FT_Size cidsize, /* CID_Size */ FT_UInt glyph_index, FT_Int32 load_flags ) { CID_GlyphSlot glyph = (CID_GlyphSlot)cidglyph; FT_Error error; T1_DecoderRec decoder; CID_Face face = (CID_Face)cidglyph->face; FT_Bool hinting; PSAux_Service psaux = (PSAux_Service)face->psaux; FT_Matrix font_matrix; FT_Vector font_offset; if ( glyph_index >= (FT_UInt)face->root.num_glyphs ) { error = CID_Err_Invalid_Argument; goto Exit; } if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; glyph->x_scale = cidsize->metrics.x_scale; glyph->y_scale = cidsize->metrics.y_scale; cidglyph->outline.n_points = 0; cidglyph->outline.n_contours = 0; hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); cidglyph->format = FT_GLYPH_FORMAT_OUTLINE; error = psaux->t1_decoder_funcs->init( &decoder, cidglyph->face, cidsize, cidglyph, 0, /* glyph names -- XXX */ 0, /* blend == 0 */ hinting, FT_LOAD_TARGET_MODE( load_flags ), cid_load_glyph ); if ( error ) goto Exit; /* TODO: initialize decoder.len_buildchar and decoder.buildchar */ /* if we ever support CID-keyed multiple master fonts */ /* set up the decoder */ decoder.builder.no_recurse = FT_BOOL( ( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ) ); error = cid_load_glyph( &decoder, glyph_index ); if ( error ) goto Exit; font_matrix = decoder.font_matrix; font_offset = decoder.font_offset; /* save new glyph tables */ psaux->t1_decoder_funcs->done( &decoder ); /* now set the metrics -- this is rather simple, as */ /* the left side bearing is the xMin, and the top side */ /* bearing the yMax */ cidglyph->outline.flags &= FT_OUTLINE_OWNER; cidglyph->outline.flags |= FT_OUTLINE_REVERSE_FILL; /* for composite glyphs, return only left side bearing and */ /* advance width */ if ( load_flags & FT_LOAD_NO_RECURSE ) { FT_Slot_Internal internal = cidglyph->internal; cidglyph->metrics.horiBearingX = FIXED_TO_INT( decoder.builder.left_bearing.x ); cidglyph->metrics.horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; internal->glyph_transformed = 1; } else { FT_BBox cbox; FT_Glyph_Metrics* metrics = &cidglyph->metrics; FT_Vector advance; /* copy the _unscaled_ advance width */ metrics->horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); cidglyph->linearHoriAdvance = FIXED_TO_INT( decoder.builder.advance.x ); cidglyph->internal->glyph_transformed = 0; /* make up vertical ones */ metrics->vertAdvance = ( face->cid.font_bbox.yMax - face->cid.font_bbox.yMin ) >> 16; cidglyph->linearVertAdvance = metrics->vertAdvance; cidglyph->format = FT_GLYPH_FORMAT_OUTLINE; if ( cidsize->metrics.y_ppem < 24 ) cidglyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION; /* apply the font matrix */ FT_Outline_Transform( &cidglyph->outline, &font_matrix ); FT_Outline_Translate( &cidglyph->outline, font_offset.x, font_offset.y ); advance.x = metrics->horiAdvance; advance.y = 0; FT_Vector_Transform( &advance, &font_matrix ); metrics->horiAdvance = advance.x + font_offset.x; advance.x = 0; advance.y = metrics->vertAdvance; FT_Vector_Transform( &advance, &font_matrix ); metrics->vertAdvance = advance.y + font_offset.y; if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ) { /* scale the outline and the metrics */ FT_Int n; FT_Outline* cur = decoder.builder.base; FT_Vector* vec = cur->points; FT_Fixed x_scale = glyph->x_scale; FT_Fixed y_scale = glyph->y_scale; /* First of all, scale the points */ if ( !hinting || !decoder.builder.hints_funcs ) for ( n = cur->n_points; n > 0; n--, vec++ ) { vec->x = FT_MulFix( vec->x, x_scale ); vec->y = FT_MulFix( vec->y, y_scale ); } /* Then scale the metrics */ metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); } /* compute the other metrics */ FT_Outline_Get_CBox( &cidglyph->outline, &cbox ); metrics->width = cbox.xMax - cbox.xMin; metrics->height = cbox.yMax - cbox.yMin; metrics->horiBearingX = cbox.xMin; metrics->horiBearingY = cbox.yMax; if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) { /* make up vertical ones */ ft_synthesize_vertical_metrics( metrics, metrics->vertAdvance ); } } Exit: return error; }
static FT_Error af_loader_load_g( AF_Loader loader, AF_Scaler scaler, FT_UInt glyph_index, FT_Int32 load_flags ) { AF_Module module = loader->globals->module; FT_Error error; FT_Face face = loader->face; AF_StyleMetrics metrics = loader->metrics; AF_GlyphHints hints = loader->hints; FT_GlyphSlot slot = face->glyph; FT_Slot_Internal internal = slot->internal; FT_GlyphLoader gloader = internal->loader; FT_Int32 flags; flags = load_flags | FT_LOAD_LINEAR_DESIGN; error = FT_Load_Glyph( face, glyph_index, flags ); if ( error ) goto Exit; /* * Apply stem darkening (emboldening) here before hints are applied to * the outline. Glyphs are scaled down proportionally to the * emboldening so that curve points don't fall outside their precomputed * blue zones. * * Any emboldening done by the font driver (e.g., the CFF driver) * doesn't reach here because the autohinter loads the unprocessed * glyphs in font units for analysis (functions `af_*_metrics_init_*') * and then above to prepare it for the rasterizers by itself, * independently of the font driver. So emboldening must be done here, * within the autohinter. * * All glyphs to be autohinted pass through here one by one. The * standard widths can therefore change from one glyph to the next, * depending on what script a glyph is assigned to (each script has its * own set of standard widths and other metrics). The darkening amount * must therefore be recomputed for each size and * `standard_{vertical,horizontal}_width' change. */ if ( !module->no_stem_darkening ) { AF_FaceGlobals globals = loader->globals; AF_WritingSystemClass writing_system_class; FT_Pos stdVW = 0; FT_Pos stdHW = 0; FT_Bool size_changed = face->size->metrics.x_ppem != globals->stem_darkening_for_ppem; FT_Fixed em_size = af_intToFixed( face->units_per_EM ); FT_Fixed em_ratio = FT_DivFix( af_intToFixed( 1000 ), em_size ); FT_Matrix scale_down_matrix = { 0x10000L, 0, 0, 0x10000L }; /* Skip stem darkening for broken fonts. */ if ( !face->units_per_EM ) goto After_Emboldening; /* * We depend on the writing system (script analyzers) to supply * standard widths for the script of the glyph we are looking at. If * it can't deliver, stem darkening is effectively disabled. */ writing_system_class = AF_WRITING_SYSTEM_CLASSES_GET[metrics->style_class->writing_system]; if ( writing_system_class->style_metrics_getstdw ) writing_system_class->style_metrics_getstdw( metrics, &stdHW, &stdVW ); else goto After_Emboldening; if ( size_changed || ( stdVW > 0 && stdVW != globals->standard_vertical_width ) ) { FT_Fixed darken_by_font_units_x, darken_x; darken_by_font_units_x = af_intToFixed( af_loader_compute_darkening( loader, face, stdVW ) ); darken_x = FT_DivFix( FT_MulFix( darken_by_font_units_x, face->size->metrics.x_scale ), em_ratio ); globals->standard_vertical_width = stdVW; globals->stem_darkening_for_ppem = face->size->metrics.x_ppem; globals->darken_x = af_fixedToInt( darken_x ); } if ( size_changed || ( stdHW > 0 && stdHW != globals->standard_horizontal_width ) ) { FT_Fixed darken_by_font_units_y, darken_y; darken_by_font_units_y = af_intToFixed( af_loader_compute_darkening( loader, face, stdHW ) ); darken_y = FT_DivFix( FT_MulFix( darken_by_font_units_y, face->size->metrics.y_scale ), em_ratio ); globals->standard_horizontal_width = stdHW; globals->stem_darkening_for_ppem = face->size->metrics.x_ppem; globals->darken_y = af_fixedToInt( darken_y ); /* * Scale outlines down on the Y-axis to keep them inside their blue * zones. The stronger the emboldening, the stronger the * downscaling (plus heuristical padding to prevent outlines still * falling out their zones due to rounding). * * Reason: `FT_Outline_Embolden' works by shifting the rightmost * points of stems farther to the right, and topmost points farther * up. This positions points on the Y-axis outside their * pre-computed blue zones and leads to distortion when applying the * hints in the code further below. Code outside this emboldening * block doesn't know we are presenting it with modified outlines * the analyzer didn't see! * * An unfortunate side effect of downscaling is that the emboldening * effect is slightly decreased. The loss becomes more pronounced * versus the CFF driver at smaller sizes, e.g., at 9ppem and below. */ globals->scale_down_factor = FT_DivFix( em_size - ( darken_by_font_units_y + af_intToFixed( 8 ) ), em_size ); } FT_Outline_EmboldenXY( &slot->outline, globals->darken_x, globals->darken_y ); scale_down_matrix.yy = globals->scale_down_factor; FT_Outline_Transform( &slot->outline, &scale_down_matrix ); } After_Emboldening: loader->transformed = internal->glyph_transformed; if ( loader->transformed ) { FT_Matrix inverse; loader->trans_matrix = internal->glyph_matrix; loader->trans_delta = internal->glyph_delta; inverse = loader->trans_matrix; if ( !FT_Matrix_Invert( &inverse ) ) FT_Vector_Transform( &loader->trans_delta, &inverse ); } switch ( slot->format ) { case FT_GLYPH_FORMAT_OUTLINE: /* translate the loaded glyph when an internal transform is needed */ if ( loader->transformed ) FT_Outline_Translate( &slot->outline, loader->trans_delta.x, loader->trans_delta.y ); /* compute original horizontal phantom points (and ignore */ /* vertical ones) */ loader->pp1.x = hints->x_delta; loader->pp1.y = hints->y_delta; loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance, hints->x_scale ) + hints->x_delta; loader->pp2.y = hints->y_delta; /* be sure to check for spacing glyphs */ if ( slot->outline.n_points == 0 ) goto Hint_Metrics; /* now load the slot image into the auto-outline and run the */ /* automatic hinting process */ { #ifdef FT_CONFIG_OPTION_PIC AF_FaceGlobals globals = loader->globals; #endif AF_StyleClass style_class = metrics->style_class; AF_WritingSystemClass writing_system_class = AF_WRITING_SYSTEM_CLASSES_GET[style_class->writing_system]; if ( writing_system_class->style_hints_apply ) writing_system_class->style_hints_apply( glyph_index, hints, &gloader->base.outline, metrics ); } /* we now need to adjust the metrics according to the change in */ /* width/positioning that occurred during the hinting process */ if ( scaler->render_mode != FT_RENDER_MODE_LIGHT ) { FT_Pos old_rsb, old_lsb, new_lsb; FT_Pos pp1x_uh, pp2x_uh; AF_AxisHints axis = &hints->axis[AF_DIMENSION_HORZ]; AF_Edge edge1 = axis->edges; /* leftmost edge */ AF_Edge edge2 = edge1 + axis->num_edges - 1; /* rightmost edge */ if ( axis->num_edges > 1 && AF_HINTS_DO_ADVANCE( hints ) ) { old_rsb = loader->pp2.x - edge2->opos; old_lsb = edge1->opos; new_lsb = edge1->pos; /* remember unhinted values to later account */ /* for rounding errors */ pp1x_uh = new_lsb - old_lsb; pp2x_uh = edge2->pos + old_rsb; /* prefer too much space over too little space */ /* for very small sizes */ if ( old_lsb < 24 ) pp1x_uh -= 8; if ( old_rsb < 24 ) pp2x_uh += 8; loader->pp1.x = FT_PIX_ROUND( pp1x_uh ); loader->pp2.x = FT_PIX_ROUND( pp2x_uh ); if ( loader->pp1.x >= new_lsb && old_lsb > 0 ) loader->pp1.x -= 64; if ( loader->pp2.x <= edge2->pos && old_rsb > 0 ) loader->pp2.x += 64; slot->lsb_delta = loader->pp1.x - pp1x_uh; slot->rsb_delta = loader->pp2.x - pp2x_uh; } else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x ); loader->pp2.x = FT_PIX_ROUND( pp2x ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } } else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x + hints->xmin_delta ); loader->pp2.x = FT_PIX_ROUND( pp2x + hints->xmax_delta ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } break; default: /* we don't support other formats (yet?) */ error = FT_THROW( Unimplemented_Feature ); } Hint_Metrics: { FT_BBox bbox; FT_Vector vvector; vvector.x = slot->metrics.vertBearingX - slot->metrics.horiBearingX; vvector.y = slot->metrics.vertBearingY - slot->metrics.horiBearingY; vvector.x = FT_MulFix( vvector.x, metrics->scaler.x_scale ); vvector.y = FT_MulFix( vvector.y, metrics->scaler.y_scale ); /* transform the hinted outline if needed */ if ( loader->transformed ) { FT_Outline_Transform( &gloader->base.outline, &loader->trans_matrix ); FT_Vector_Transform( &vvector, &loader->trans_matrix ); } #if 1 /* we must translate our final outline by -pp1.x and compute */ /* the new metrics */ if ( loader->pp1.x ) FT_Outline_Translate( &gloader->base.outline, -loader->pp1.x, 0 ); #endif FT_Outline_Get_CBox( &gloader->base.outline, &bbox ); bbox.xMin = FT_PIX_FLOOR( bbox.xMin ); bbox.yMin = FT_PIX_FLOOR( bbox.yMin ); bbox.xMax = FT_PIX_CEIL( bbox.xMax ); bbox.yMax = FT_PIX_CEIL( bbox.yMax ); slot->metrics.width = bbox.xMax - bbox.xMin; slot->metrics.height = bbox.yMax - bbox.yMin; slot->metrics.horiBearingX = bbox.xMin; slot->metrics.horiBearingY = bbox.yMax; slot->metrics.vertBearingX = FT_PIX_FLOOR( bbox.xMin + vvector.x ); slot->metrics.vertBearingY = FT_PIX_FLOOR( bbox.yMax + vvector.y ); /* for mono-width fonts (like Andale, Courier, etc.) we need */ /* to keep the original rounded advance width; ditto for */ /* digits if all have the same advance width */ #if 0 if ( !FT_IS_FIXED_WIDTH( slot->face ) ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; else slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, x_scale ); #else if ( scaler->render_mode != FT_RENDER_MODE_LIGHT && ( FT_IS_FIXED_WIDTH( slot->face ) || ( af_face_globals_is_digit( loader->globals, glyph_index ) && metrics->digits_have_same_width ) ) ) { slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, metrics->scaler.x_scale ); /* Set delta values to 0. Otherwise code that uses them is */ /* going to ruin the fixed advance width. */ slot->lsb_delta = 0; slot->rsb_delta = 0; } else { /* non-spacing glyphs must stay as-is */ if ( slot->metrics.horiAdvance ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; } #endif slot->metrics.vertAdvance = FT_MulFix( slot->metrics.vertAdvance, metrics->scaler.y_scale ); slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance ); slot->metrics.vertAdvance = FT_PIX_ROUND( slot->metrics.vertAdvance ); #if 0 /* reassign all outline fields except flags to protect them */ slot->outline.n_contours = internal->loader->base.outline.n_contours; slot->outline.n_points = internal->loader->base.outline.n_points; slot->outline.points = internal->loader->base.outline.points; slot->outline.tags = internal->loader->base.outline.tags; slot->outline.contours = internal->loader->base.outline.contours; #endif slot->format = FT_GLYPH_FORMAT_OUTLINE; } Exit: return error; }
/* * Renders a glyph immediately, then tries to puts it into cache. * rend and rend->face must be not 0 */ static GLYPH* _gk_rend_workout(GLYPH_REND* const rend,const unsigned unicode) { unsigned glyph_index; int bmp_size; int error; int center_x = 0,center_y = 0; FT_Glyph ft_glyph = 0; GLYPH* glyph; GLYPH_FACE* actual_face; unsigned actual_code; #ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log,"_gk_rend_workout(%p,%d) begin\n",(void*)rend,unicode); #endif CARE(rend && rend->face); CARE(unicode > 0); CARE(unicode <= GK_MAX_UNICODE); funcname = "_gk_rend_workout()"; _gk_find_mapping(rend->face,unicode,&actual_face,&actual_code); if (!actual_face || !actual_code) return 0; if (!actual_face->face) return 0; glyph_index = FT_Get_Char_Index(actual_face->face,actual_code); if (!glyph_index) { if (unicode==rend->undefined_char || unicode==rend->error_char) return 0; else return _gk_rend_render(rend,rend->undefined_char); } #ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," glyph_index is %u\n",glyph_index); #endif /* Preparing for glyph loading: setting size */ /*FT_Activate_Size(size);*/ if (actual_face == rend->face) { error = (rend->size == 0); if (!error) actual_face->face->size = rend->size; } else { error = (actual_face->own_size == 0); if (!error) { actual_face->face->size = actual_face->own_size; error = FT_Set_Char_Size(actual_face->face,rend->hsize,rend->vsize,72,72); } } #ifdef GLYPH_LOG if (error) { if (glyph_log) fprintf(glyph_log," Failed to select size\n"); } else { if (glyph_log) fprintf(glyph_log," Size selected successfully\n"); } #endif /* Loading a glyph with FreeType */ if (!error) { error = FT_Load_Glyph(actual_face->face,glyph_index,rend->load_flags); if (error) _gk_msg("Error: %s: FT_Load_Glyph() bugs on glyph (#%d) for character U+%04X\n",funcname,glyph_index,unicode); else { error = (actual_face->face->glyph == 0); if (error) _gk_msg("Error: %s: Empty glyph slot after FT_Load_Glyph()\n",funcname); } /*#ifdef GLYPH_LOG if (error) { if (glyph_log) fprintf(glyph_log," Could not load a glyph with FT_Load_Glyph()\n"); } else { if (glyph_log) fprintf(glyph_log," Loaded a glyph with FT_Load_Glyph()\n"); } #endif*/ } /* Getting center coordinates (MEGA-HACK) */ /* This whole idea should be re-made in more optimal way */ if (!error) { /*#ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," Getting a center point\n"); #endif*/ FT_Glyph g = 0; error = FT_Get_Glyph(actual_face->face->glyph, &g); /*#ifdef GLYPH_LOG if (glyph_log) { if (error) fprintf(glyph_log," FT_Get_Glyph() failed\n"); else fprintf(glyph_log," FT_Get_Glyph() succeeded\n"); if (g) fprintf(glyph_log," FT_Get_Glyph() returned not 0\n"); else fprintf(glyph_log," FT_Get_Glyph() returned 0\n"); } #endif*/ error = error || !g; if (!error && g->format==FT_GLYPH_FORMAT_OUTLINE) { /*#ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," Calling FT_Glyph_To_Bitmap()\n"); #endif*/ error = FT_Glyph_To_Bitmap(&g,rend->render_mode,0,1); /*#ifdef GLYPH_LOG if (glyph_log) { if (error) fprintf(glyph_log," FT_Glyph_To_Bitmap() failed\n"); else fprintf(glyph_log," FT_Glyph_To_Bitmap() succeeded\n"); } #endif*/ if (!error) { center_x = 64 * ((FT_BitmapGlyph)g)->left + 64 * ((FT_BitmapGlyph)g)->bitmap.width / 2; center_y = 64 * ((FT_BitmapGlyph)g)->top - 64 * ((FT_BitmapGlyph)g)->bitmap.rows / 2; /*center_x = 64 * ((FT_BitmapGlyph)g)->bitmap.width / 2; center_y = -64 * ((FT_BitmapGlyph)g)->bitmap.rows / 2;*/ } } if (g) { /*#ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," Calling FT_Done_Glyph()\n"); #endif*/ FT_Done_Glyph(g); } /*#ifdef GLYPH_LOG if (glyph_log) { if (error) fprintf(glyph_log," Could not find a center point\n"); else fprintf(glyph_log," Computed a center point\n"); } #endif*/ } /* Emboldening the glyph */ if (!error) { if (rend->bold_strength && actual_face->face->glyph->format==FT_GLYPH_FORMAT_OUTLINE) { int xstr, ystr, xstr2, ystr2; int xmin,xmax,ymin,ymax; int center_dx, center_dy; FT_GlyphSlot slot = actual_face->face->glyph; #ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," Emboldening the glyph by %d\n",rend->bold_strength); #endif xstr = rend->bold_strength * FT_MulFix( actual_face->face->units_per_EM, actual_face->face->size->metrics.y_scale ) / 2400; ystr = xstr; #ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," xstr = %d, ystr = %d\n",xstr,ystr); #endif GK_Outline_Embolden(&slot->outline,xstr,&xmin,&xmax,&ymin,&ymax); #ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," xmin = %d, xmax = %d\n",xmin,xmax); if (glyph_log) fprintf(glyph_log," ymin = %d, ymax = %d\n",ymin,ymax); #endif /*xstr = xstr * 2; ystr = xstr;*/ #ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," xstr = %d, ystr = %d\n",xstr,ystr); #endif xstr2 = xmin+xmax; ystr2 = ymin+ymax; #ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," xstr2 = %d, ystr2 = %d\n",xstr2,ystr2); if (glyph_log) fprintf(glyph_log," xscale = %.5f\n",((double)actual_face->face->size->metrics.x_scale)/65536); if (glyph_log) fprintf(glyph_log," yscale = %.5f\n",((double)actual_face->face->size->metrics.y_scale)/65536); #endif if (slot->advance.x) slot->advance.x += xstr; if (slot->advance.y) slot->advance.y += ystr; slot->metrics.width += xstr * 2; slot->metrics.height += ystr * 2; /*slot->metrics.horiBearingX -= xmin;*/ slot->metrics.horiBearingY += ystr * 2; slot->metrics.horiAdvance += xstr * 2; slot->metrics.vertBearingX -= xstr; slot->metrics.vertBearingY += ystr * 2; slot->metrics.vertAdvance += ystr * 2; /*center_dx = (int)( (double)xstr / 2 * (double)actual_face->face->size->metrics.x_scale / (80000) ); center_dy = (int)( (double)ystr / 2 * (double)actual_face->face->size->metrics.y_scale / (65536) );*/ center_dx = (int)( (double)rend->bold_strength * (double)actual_face->face->size->metrics.x_ppem / 80); center_dy = (int)( (double)rend->bold_strength * (double)actual_face->face->size->metrics.y_ppem / 80); #ifdef GLYPH_LOG if (glyph_log) fprintf(glyph_log," center_x += %.1f\n",((double)center_dx)/64); if (glyph_log) fprintf(glyph_log," center_y += %.1f\n",((double)center_dx)/64); #endif center_x += center_dx; center_y += center_dy; /*center_x += xstr;*/ /*center_y += ymin;*/ /*FT_GlyphSlot_Embolden(slot);*/ } } /* Getting a glyph from FreeType */ if (!error) { error = FT_Get_Glyph(actual_face->face->glyph, &ft_glyph); error = error || !ft_glyph; if (error) _gk_msg("Error: %s: Can't get a glyph with FT_Get_Glyph() call. Glyph (#%d) for character U+%04X\n", funcname,glyph_index,unicode); } /* Transforming the glyph to apply rotation and italics */ if (!error && ft_glyph->format==FT_GLYPH_FORMAT_OUTLINE && rend->do_matrix_transform) { error = FT_Glyph_Transform(ft_glyph,&rend->matrix,0); if (!error) { FT_Vector c; c.x = center_x; c.y = center_y; FT_Vector_Transform(&c,&rend->matrix); center_x = c.x; center_y = c.y; } } /* Converting glyph to bitmap */ if (!error && ft_glyph->format==FT_GLYPH_FORMAT_OUTLINE) { error = FT_Glyph_To_Bitmap(&ft_glyph,rend->render_mode,0,1); if (error) _gk_msg("Error: %s: FT_Glyph_To_Bitmap() bugs on character U+%04X\n",funcname,unicode); } /* Checking if we have bitmap now */ if (!error) { error = (ft_glyph->format!=FT_GLYPH_FORMAT_BITMAP); if (error) _gk_msg("Error: %s: Glyph is not FT_GLYPH_FORMAT_BITMAP after rendering with FT_Glyph_To_Bitmap()\n",funcname); } #ifdef GLYPH_LOG /* { if (glyph_log) { fprintf(glyph_log," We got a bitmap glyph from FreeType!\n"); if (ft_glyph->format==FT_GLYPH_FORMAT_BITMAP) { fprintf(glyph_log," Format: FT_GLYPH_FORMAT_BITMAP\n"); fprintf(glyph_log," Size: %dx%d, pitch: %d\n", ((FT_BitmapGlyph)ft_glyph)->bitmap.width, ((FT_BitmapGlyph)ft_glyph)->bitmap.rows, ((FT_BitmapGlyph)ft_glyph)->bitmap.pitch); if (((FT_BitmapGlyph)ft_glyph)->bitmap.pixel_mode==FT_PIXEL_MODE_MONO) { int x,y; int pitch = ((FT_BitmapGlyph)ft_glyph)->bitmap.pitch; fprintf(glyph_log," Pixel mode: FT_PIXEL_MODE_MONO\n"); fprintf(glyph_log," Buffer:\n"); for (y=0; y < ((FT_BitmapGlyph)ft_glyph)->bitmap.rows; y++) { fprintf(glyph_log," "); for (x=0; x < ((FT_BitmapGlyph)ft_glyph)->bitmap.width; x++) { unsigned char byte = ((unsigned char*)((FT_BitmapGlyph)ft_glyph)->bitmap.buffer)[y*pitch+x]; unsigned char mask = 128 >> (x%8); fprintf(glyph_log,"%s",(byte&mask)?" *":" ."); } fprintf(glyph_log,"\n"); } } else if (((FT_BitmapGlyph)ft_glyph)->bitmap.pixel_mode==FT_PIXEL_MODE_GRAY) fprintf(glyph_log," Pixel mode: FT_PIXEL_MODE_GRAY\n"); else if (((FT_BitmapGlyph)ft_glyph)->bitmap.pixel_mode==FT_PIXEL_MODE_GRAY2) fprintf(glyph_log," Pixel mode: FT_PIXEL_MODE_GRAY2\n"); else if (((FT_BitmapGlyph)ft_glyph)->bitmap.pixel_mode==FT_PIXEL_MODE_GRAY4) fprintf(glyph_log," Pixel mode: FT_PIXEL_MODE_GRAY4\n"); else if (((FT_BitmapGlyph)ft_glyph)->bitmap.pixel_mode==FT_PIXEL_MODE_LCD) fprintf(glyph_log," Pixel mode: FT_PIXEL_MODE_LCD\n"); else if (((FT_BitmapGlyph)ft_glyph)->bitmap.pixel_mode==FT_PIXEL_MODE_LCD_V) fprintf(glyph_log," Pixel mode: FT_PIXEL_MODE_LCD_V\n"); } else if (ft_glyph->format==FT_GLYPH_FORMAT_OUTLINE) { fprintf(glyph_log," Format: FT_GLYPH_FORMAT_OUTLINE\n"); } fprintf(glyph_log," Advance: ( %.1f , %.1f ) pixels\n", ((double)ft_glyph->advance.x)/0x10000,((double)ft_glyph->advance.y)/0x10000); } }*/ #endif if (!error) { error = ( ((FT_BitmapGlyph)ft_glyph)->bitmap.pitch < 0 ); if (error) _gk_msg("Error: rend_workout(): Rendered glyph has negative pitch value, can't handle\n"); /* FIXME */ } if (!error) { glyph = (GLYPH*)_gk_malloc(sizeof(GLYPH)); error = (glyph == 0); } if (error || !ft_glyph) { if (ft_glyph) FT_Done_Glyph(ft_glyph); if (unicode==rend->error_char) return 0; else return _gk_rend_render(rend,rend->error_char); } glyph->unicode = unicode; glyph->width = ((FT_BitmapGlyph)ft_glyph)->bitmap.width; glyph->height = ((FT_BitmapGlyph)ft_glyph)->bitmap.rows; glyph->left = ((FT_BitmapGlyph)ft_glyph)->left; glyph->top = ((FT_BitmapGlyph)ft_glyph)->top; glyph->advance_x = ft_glyph->advance.x >> 10; glyph->advance_y = ft_glyph->advance.y >> 10; glyph->center_x = (center_x + 31) / 64; glyph->center_y = (center_y + 31) / 64; glyph->index = 0; glyph->prev = 0; glyph->next = 0; glyph->bmp = 0; glyph->bmpsize = 0; _gk_msg("rendering character '%c'\n",unicode); bmp_size = glyph->width*glyph->height; if (!bmp_size) /* empty glyph, like space (' ') character */ { if (rend->index) _gk_glyph_index_add_glyph(rend->index,glyph); FT_Done_Glyph(ft_glyph); return glyph; } if (((FT_BitmapGlyph)ft_glyph)->bitmap.pixel_mode == FT_PIXEL_MODE_MONO) { #ifdef GLYPH_TARGET_KNOWS_MONO_BITPACK int pitch1 = (glyph->width+7)>>3; int bitpack_size = glyph->height*pitch1; #ifdef GLYPH_TARGET_KNOWS_MONO_RLE7 int rle_size = 0; if (rend->index) rle_size = _gk_make_RLE7( ((FT_BitmapGlyph)ft_glyph)->bitmap.buffer, glyph->width, glyph->height, ((FT_BitmapGlyph)ft_glyph)->bitmap.pitch); if (rle_size>0 && rle_size<=bitpack_size) { glyph->bmp = (unsigned char*)_gk_malloc(rle_size); if (!glyph->bmp) { _gk_free(glyph); return 0; } memcpy(glyph->bmp,rle_buffer,rle_size); glyph->bmpsize = rle_size; } else #endif /* GLYPH_TARGET_KNOWS_MONO_RLE7 */ { glyph->bmp = (unsigned char*)_gk_malloc(bitpack_size+1); if (!glyph->bmp) { _gk_free(glyph); return 0; } glyph->bmp[0] = GLYPH_MONO_BITPACK; if ( ((FT_BitmapGlyph)ft_glyph)->bitmap.pitch == pitch1 ) memcpy( glyph->bmp+1, ((FT_BitmapGlyph)ft_glyph)->bitmap.buffer, bitpack_size ); else { unsigned char *d = glyph->bmp+1; int y = 0; for (; y<glyph->height; y++,d+=pitch1) memcpy( d, ((FT_BitmapGlyph)ft_glyph)->bitmap.buffer + y * ((FT_BitmapGlyph)ft_glyph)->bitmap.pitch, pitch1 ); } glyph->bmpsize = bitpack_size+1; } #else /* GLYPH_TARGET_KNOWS_MONO_BITPACK */ { int y = 0; unsigned char* b; glyph->bmp = (unsigned char*)_gk_malloc(bmp_size+1); if (!glyph->bmp) { _gk_free(glyph); return 0; } glyph->bmp[0] = GLYPH_UNCOMPRESSED; glyph->bmpsize = bmp_size+1; b = glyph->bmp + 1; for (; y<glyph->height; y++) { int x = 0; unsigned char* a = ((FT_BitmapGlyph)ft_glyph)->bitmap.buffer + y * ((FT_BitmapGlyph)ft_glyph)->bitmap.pitch; while (x<glyph->width) { if (x < glyph->width) { *b++ = *a&0x80 ? 255 : 0; x++; } if (x < glyph->width) { *b++ = *a&0x40 ? 255 : 0; x++; } if (x < glyph->width) { *b++ = *a&0x20 ? 255 : 0; x++; } if (x < glyph->width) { *b++ = *a&0x10 ? 255 : 0; x++; } if (x < glyph->width) { *b++ = *a&0x08 ? 255 : 0; x++; } if (x < glyph->width) { *b++ = *a&0x04 ? 255 : 0; x++; } if (x < glyph->width) { *b++ = *a&0x02 ? 255 : 0; x++; } if (x < glyph->width) { *b++ = *a&0x01 ? 255 : 0; x++; } a++; } } } #endif /* GLYPH_TARGET_KNOWS_MONO_BITPACK */ }
T1_Load_Glyph( T1_GlyphSlot glyph, T1_Size size, FT_UInt glyph_index, FT_Int32 load_flags ) { FT_Error error; T1_DecoderRec decoder; T1_Face face = (T1_Face)glyph->root.face; FT_Bool hinting; T1_Font type1 = &face->type1; PSAux_Service psaux = (PSAux_Service)face->psaux; const T1_Decoder_Funcs decoder_funcs = psaux->t1_decoder_funcs; FT_Matrix font_matrix; FT_Vector font_offset; FT_Data glyph_data; FT_Bool must_finish_decoder = FALSE; #ifdef FT_CONFIG_OPTION_INCREMENTAL FT_Bool glyph_data_loaded = 0; #endif if ( glyph_index >= (FT_UInt)face->root.num_glyphs ) { error = T1_Err_Invalid_Argument; goto Exit; } FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) ); if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; if ( size ) { glyph->x_scale = size->root.metrics.x_scale; glyph->y_scale = size->root.metrics.y_scale; } else { glyph->x_scale = 0x10000L; glyph->y_scale = 0x10000L; } glyph->root.outline.n_points = 0; glyph->root.outline.n_contours = 0; hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; error = decoder_funcs->init( &decoder, (FT_Face)face, (FT_Size)size, (FT_GlyphSlot)glyph, (FT_Byte**)type1->glyph_names, face->blend, FT_BOOL( hinting ), FT_LOAD_TARGET_MODE( load_flags ), T1_Parse_Glyph ); if ( error ) goto Exit; must_finish_decoder = TRUE; decoder.builder.no_recurse = FT_BOOL( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ); decoder.num_subrs = type1->num_subrs; decoder.subrs = type1->subrs; decoder.subrs_len = type1->subrs_len; decoder.buildchar = face->buildchar; decoder.len_buildchar = face->len_buildchar; /* now load the unscaled outline */ error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index, &glyph_data ); if ( error ) goto Exit; #ifdef FT_CONFIG_OPTION_INCREMENTAL glyph_data_loaded = 1; #endif font_matrix = decoder.font_matrix; font_offset = decoder.font_offset; /* save new glyph tables */ decoder_funcs->done( &decoder ); must_finish_decoder = FALSE; /* now, set the metrics -- this is rather simple, as */ /* the left side bearing is the xMin, and the top side */ /* bearing the yMax */ if ( !error ) { glyph->root.outline.flags &= FT_OUTLINE_OWNER; glyph->root.outline.flags |= FT_OUTLINE_REVERSE_FILL; /* for composite glyphs, return only left side bearing and */ /* advance width */ if ( load_flags & FT_LOAD_NO_RECURSE ) { FT_Slot_Internal internal = glyph->root.internal; glyph->root.metrics.horiBearingX = FIXED_TO_INT( decoder.builder.left_bearing.x ); glyph->root.metrics.horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; internal->glyph_transformed = 1; } else { FT_BBox cbox; FT_Glyph_Metrics* metrics = &glyph->root.metrics; FT_Vector advance; /* copy the _unscaled_ advance width */ metrics->horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); glyph->root.linearHoriAdvance = FIXED_TO_INT( decoder.builder.advance.x ); glyph->root.internal->glyph_transformed = 0; /* make up vertical ones */ metrics->vertAdvance = ( face->type1.font_bbox.yMax - face->type1.font_bbox.yMin ) >> 16; glyph->root.linearVertAdvance = metrics->vertAdvance; glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; if ( size && size->root.metrics.y_ppem < 24 ) glyph->root.outline.flags |= FT_OUTLINE_HIGH_PRECISION; #if 1 /* apply the font matrix, if any */ if ( font_matrix.xx != 0x10000L || font_matrix.yy != font_matrix.xx || font_matrix.xy != 0 || font_matrix.yx != 0 ) FT_Outline_Transform( &glyph->root.outline, &font_matrix ); if ( font_offset.x || font_offset.y ) FT_Outline_Translate( &glyph->root.outline, font_offset.x, font_offset.y ); advance.x = metrics->horiAdvance; advance.y = 0; FT_Vector_Transform( &advance, &font_matrix ); metrics->horiAdvance = advance.x + font_offset.x; advance.x = 0; advance.y = metrics->vertAdvance; FT_Vector_Transform( &advance, &font_matrix ); metrics->vertAdvance = advance.y + font_offset.y; #endif if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ) { /* scale the outline and the metrics */ FT_Int n; FT_Outline* cur = decoder.builder.base; FT_Vector* vec = cur->points; FT_Fixed x_scale = glyph->x_scale; FT_Fixed y_scale = glyph->y_scale; /* First of all, scale the points, if we are not hinting */ if ( !hinting || ! decoder.builder.hints_funcs ) for ( n = cur->n_points; n > 0; n--, vec++ ) { vec->x = FT_MulFix( vec->x, x_scale ); vec->y = FT_MulFix( vec->y, y_scale ); } /* Then scale the metrics */ metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); } /* compute the other metrics */ FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); metrics->width = cbox.xMax - cbox.xMin; metrics->height = cbox.yMax - cbox.yMin; metrics->horiBearingX = cbox.xMin; metrics->horiBearingY = cbox.yMax; /* make up vertical ones */ ft_synthesize_vertical_metrics( metrics, metrics->vertAdvance ); } /* Set control data to the glyph charstrings. Note that this is */ /* _not_ zero-terminated. */ glyph->root.control_data = (FT_Byte*)glyph_data.pointer; glyph->root.control_len = glyph_data.length; }
static FT_Error af_loader_load_g( AF_Loader loader, AF_Scaler scaler, FT_UInt glyph_index, FT_Int32 load_flags ) { FT_Error error; FT_Face face = loader->face; AF_StyleMetrics metrics = loader->metrics; AF_GlyphHints hints = loader->hints; FT_GlyphSlot slot = face->glyph; FT_Slot_Internal internal = slot->internal; FT_GlyphLoader gloader = internal->loader; FT_Int32 flags; flags = load_flags | FT_LOAD_LINEAR_DESIGN; error = FT_Load_Glyph( face, glyph_index, flags ); if ( error ) goto Exit; loader->transformed = internal->glyph_transformed; if ( loader->transformed ) { FT_Matrix inverse; loader->trans_matrix = internal->glyph_matrix; loader->trans_delta = internal->glyph_delta; inverse = loader->trans_matrix; if ( !FT_Matrix_Invert( &inverse ) ) FT_Vector_Transform( &loader->trans_delta, &inverse ); } switch ( slot->format ) { case FT_GLYPH_FORMAT_OUTLINE: /* translate the loaded glyph when an internal transform is needed */ if ( loader->transformed ) FT_Outline_Translate( &slot->outline, loader->trans_delta.x, loader->trans_delta.y ); /* compute original horizontal phantom points (and ignore */ /* vertical ones) */ loader->pp1.x = hints->x_delta; loader->pp1.y = hints->y_delta; loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance, hints->x_scale ) + hints->x_delta; loader->pp2.y = hints->y_delta; /* be sure to check for spacing glyphs */ if ( slot->outline.n_points == 0 ) goto Hint_Metrics; /* now load the slot image into the auto-outline and run the */ /* automatic hinting process */ { #ifdef FT_CONFIG_OPTION_PIC AF_FaceGlobals globals = loader->globals; #endif AF_StyleClass style_class = metrics->style_class; AF_WritingSystemClass writing_system_class = AF_WRITING_SYSTEM_CLASSES_GET[style_class->writing_system]; if ( writing_system_class->style_hints_apply ) writing_system_class->style_hints_apply( hints, &gloader->base.outline, metrics ); } /* we now need to adjust the metrics according to the change in */ /* width/positioning that occurred during the hinting process */ if ( scaler->render_mode != FT_RENDER_MODE_LIGHT ) { FT_Pos old_rsb, old_lsb, new_lsb; FT_Pos pp1x_uh, pp2x_uh; AF_AxisHints axis = &hints->axis[AF_DIMENSION_HORZ]; AF_Edge edge1 = axis->edges; /* leftmost edge */ AF_Edge edge2 = edge1 + axis->num_edges - 1; /* rightmost edge */ if ( axis->num_edges > 1 && AF_HINTS_DO_ADVANCE( hints ) ) { old_rsb = loader->pp2.x - edge2->opos; old_lsb = edge1->opos; new_lsb = edge1->pos; /* remember unhinted values to later account */ /* for rounding errors */ pp1x_uh = new_lsb - old_lsb; pp2x_uh = edge2->pos + old_rsb; /* prefer too much space over too little space */ /* for very small sizes */ if ( old_lsb < 24 ) pp1x_uh -= 8; if ( old_rsb < 24 ) pp2x_uh += 8; loader->pp1.x = FT_PIX_ROUND( pp1x_uh ); loader->pp2.x = FT_PIX_ROUND( pp2x_uh ); if ( loader->pp1.x >= new_lsb && old_lsb > 0 ) loader->pp1.x -= 64; if ( loader->pp2.x <= edge2->pos && old_rsb > 0 ) loader->pp2.x += 64; slot->lsb_delta = loader->pp1.x - pp1x_uh; slot->rsb_delta = loader->pp2.x - pp2x_uh; } else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x ); loader->pp2.x = FT_PIX_ROUND( pp2x ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } } else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x + hints->xmin_delta ); loader->pp2.x = FT_PIX_ROUND( pp2x + hints->xmax_delta ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } break; default: /* we don't support other formats (yet?) */ error = FT_THROW( Unimplemented_Feature ); } Hint_Metrics: { FT_BBox bbox; FT_Vector vvector; vvector.x = slot->metrics.vertBearingX - slot->metrics.horiBearingX; vvector.y = slot->metrics.vertBearingY - slot->metrics.horiBearingY; vvector.x = FT_MulFix( vvector.x, metrics->scaler.x_scale ); vvector.y = FT_MulFix( vvector.y, metrics->scaler.y_scale ); /* transform the hinted outline if needed */ if ( loader->transformed ) { FT_Outline_Transform( &gloader->base.outline, &loader->trans_matrix ); FT_Vector_Transform( &vvector, &loader->trans_matrix ); } #if 1 /* we must translate our final outline by -pp1.x and compute */ /* the new metrics */ if ( loader->pp1.x ) FT_Outline_Translate( &gloader->base.outline, -loader->pp1.x, 0 ); #endif FT_Outline_Get_CBox( &gloader->base.outline, &bbox ); bbox.xMin = FT_PIX_FLOOR( bbox.xMin ); bbox.yMin = FT_PIX_FLOOR( bbox.yMin ); bbox.xMax = FT_PIX_CEIL( bbox.xMax ); bbox.yMax = FT_PIX_CEIL( bbox.yMax ); slot->metrics.width = bbox.xMax - bbox.xMin; slot->metrics.height = bbox.yMax - bbox.yMin; slot->metrics.horiBearingX = bbox.xMin; slot->metrics.horiBearingY = bbox.yMax; slot->metrics.vertBearingX = FT_PIX_FLOOR( bbox.xMin + vvector.x ); slot->metrics.vertBearingY = FT_PIX_FLOOR( bbox.yMax + vvector.y ); /* for mono-width fonts (like Andale, Courier, etc.) we need */ /* to keep the original rounded advance width; ditto for */ /* digits if all have the same advance width */ #if 0 if ( !FT_IS_FIXED_WIDTH( slot->face ) ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; else slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, x_scale ); #else if ( scaler->render_mode != FT_RENDER_MODE_LIGHT && ( FT_IS_FIXED_WIDTH( slot->face ) || ( af_face_globals_is_digit( loader->globals, glyph_index ) && metrics->digits_have_same_width ) ) ) { slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, metrics->scaler.x_scale ); /* Set delta values to 0. Otherwise code that uses them is */ /* going to ruin the fixed advance width. */ slot->lsb_delta = 0; slot->rsb_delta = 0; } else { /* non-spacing glyphs must stay as-is */ if ( slot->metrics.horiAdvance ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; } #endif slot->metrics.vertAdvance = FT_MulFix( slot->metrics.vertAdvance, metrics->scaler.y_scale ); slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance ); slot->metrics.vertAdvance = FT_PIX_ROUND( slot->metrics.vertAdvance ); #if 0 /* reassign all outline fields except flags to protect them */ slot->outline.n_contours = internal->loader->base.outline.n_contours; slot->outline.n_points = internal->loader->base.outline.n_points; slot->outline.points = internal->loader->base.outline.points; slot->outline.tags = internal->loader->base.outline.tags; slot->outline.contours = internal->loader->base.outline.contours; #endif slot->format = FT_GLYPH_FORMAT_OUTLINE; } Exit: return error; }
static FT_Error af_loader_load_g( AF_Loader loader, AF_Scaler scaler, FT_UInt glyph_index, FT_Int32 load_flags, FT_UInt depth ) { FT_Error error = 0; FT_Face face = loader->face; FT_GlyphLoader gloader = loader->gloader; AF_ScriptMetrics metrics = loader->metrics; AF_GlyphHints hints = &loader->hints; FT_GlyphSlot slot = face->glyph; FT_Slot_Internal internal = slot->internal; error = FT_Load_Glyph( face, glyph_index, load_flags ); if ( error ) goto Exit; loader->transformed = internal->glyph_transformed; if ( loader->transformed ) { FT_Matrix inverse; loader->trans_matrix = internal->glyph_matrix; loader->trans_delta = internal->glyph_delta; inverse = loader->trans_matrix; FT_Matrix_Invert( &inverse ); FT_Vector_Transform( &loader->trans_delta, &inverse ); } /* set linear metrics */ slot->linearHoriAdvance = slot->metrics.horiAdvance; slot->linearVertAdvance = slot->metrics.vertAdvance; switch ( slot->format ) { case FT_GLYPH_FORMAT_OUTLINE: /* translate the loaded glyph when an internal transform * is needed */ if ( loader->transformed ) FT_Outline_Translate( &slot->outline, loader->trans_delta.x, loader->trans_delta.y ); /* copy the outline points in the loader's current */ /* extra points which is used to keep original glyph coordinates */ error = FT_GlyphLoader_CheckPoints( gloader, slot->outline.n_points + 4, slot->outline.n_contours ); if ( error ) goto Exit; FT_ARRAY_COPY( gloader->current.outline.points, slot->outline.points, slot->outline.n_points ); FT_ARRAY_COPY( gloader->current.extra_points, slot->outline.points, slot->outline.n_points ); FT_ARRAY_COPY( gloader->current.outline.contours, slot->outline.contours, slot->outline.n_contours ); FT_ARRAY_COPY( gloader->current.outline.tags, slot->outline.tags, slot->outline.n_points ); gloader->current.outline.n_points = slot->outline.n_points; gloader->current.outline.n_contours = slot->outline.n_contours; /* compute original horizontal phantom points (and ignore */ /* vertical ones) */ loader->pp1.x = hints->x_delta; loader->pp1.y = hints->y_delta; loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance, hints->x_scale ) + hints->x_delta; loader->pp2.y = hints->y_delta; /* be sure to check for spacing glyphs */ if ( slot->outline.n_points == 0 ) goto Hint_Metrics; /* now load the slot image into the auto-outline and run the */ /* automatic hinting process */ metrics->clazz->script_hints_apply( hints, &gloader->current.outline, metrics ); /* we now need to hint the metrics according to the change in */ /* width/positioning that occured during the hinting process */ { FT_Pos old_advance, old_rsb, old_lsb, new_lsb; FT_Pos pp1x_uh, pp2x_uh; AF_AxisHints axis = &hints->axis[ AF_DIMENSION_HORZ ]; AF_Edge edge1 = axis->edges; /* leftmost edge */ AF_Edge edge2 = edge1 + axis->num_edges - 1; /* rightmost edge */ if ( edge2 > edge1 ) { old_advance = loader->pp2.x; old_rsb = old_advance - edge2->opos; old_lsb = edge1->opos; new_lsb = edge1->pos; /* remember unhinted values to later account */ /* for rounding errors */ pp1x_uh = new_lsb - old_lsb; pp2x_uh = edge2->pos + old_rsb; /* prefer too much space over too little space */ /* for very small sizes */ if ( old_lsb < 24 ) pp1x_uh -= 5; if ( old_rsb < 24 ) pp2x_uh += 5; loader->pp1.x = FT_PIX_ROUND( pp1x_uh ); loader->pp2.x = FT_PIX_ROUND( pp2x_uh ); slot->lsb_delta = loader->pp1.x - pp1x_uh; slot->rsb_delta = loader->pp2.x - pp2x_uh; #if 0 /* try to fix certain bad advance computations */ if ( loader->pp2.x + loader->pp1.x == edge2->pos && old_rsb > 4 ) loader->pp2.x += 64; #endif } else { loader->pp1.x = FT_PIX_ROUND( loader->pp1.x ); loader->pp2.x = FT_PIX_ROUND( loader->pp2.x ); } } /* good, we simply add the glyph to our loader's base */ FT_GlyphLoader_Add( gloader ); break; case FT_GLYPH_FORMAT_COMPOSITE: { FT_UInt nn, num_subglyphs = slot->num_subglyphs; FT_UInt num_base_subgs, start_point; FT_SubGlyph subglyph; start_point = gloader->base.outline.n_points; /* first of all, copy the subglyph descriptors in the glyph loader */ error = FT_GlyphLoader_CheckSubGlyphs( gloader, num_subglyphs ); if ( error ) goto Exit; FT_ARRAY_COPY( gloader->current.subglyphs, slot->subglyphs, num_subglyphs ); gloader->current.num_subglyphs = num_subglyphs; num_base_subgs = gloader->base.num_subglyphs; /* now, read each subglyph independently */ for ( nn = 0; nn < num_subglyphs; nn++ ) { FT_Vector pp1, pp2; FT_Pos x, y; FT_UInt num_points, num_new_points, num_base_points; /* gloader.current.subglyphs can change during glyph loading due */ /* to re-allocation -- we must recompute the current subglyph on */ /* each iteration */ subglyph = gloader->base.subglyphs + num_base_subgs + nn; pp1 = loader->pp1; pp2 = loader->pp2; num_base_points = gloader->base.outline.n_points; error = af_loader_load_g( loader, scaler, subglyph->index, load_flags, depth + 1 ); if ( error ) goto Exit; /* recompute subglyph pointer */ subglyph = gloader->base.subglyphs + num_base_subgs + nn; if ( subglyph->flags & FT_SUBGLYPH_FLAG_USE_MY_METRICS ) { pp1 = loader->pp1; pp2 = loader->pp2; } else { loader->pp1 = pp1; loader->pp2 = pp2; } num_points = gloader->base.outline.n_points; num_new_points = num_points - num_base_points; /* now perform the transform required for this subglyph */ if ( subglyph->flags & ( FT_SUBGLYPH_FLAG_SCALE | FT_SUBGLYPH_FLAG_XY_SCALE | FT_SUBGLYPH_FLAG_2X2 ) ) { FT_Vector* cur = gloader->base.outline.points + num_base_points; FT_Vector* org = gloader->base.extra_points + num_base_points; FT_Vector* limit = cur + num_new_points; for ( ; cur < limit; cur++, org++ ) { FT_Vector_Transform( cur, &subglyph->transform ); FT_Vector_Transform( org, &subglyph->transform ); } } /* apply offset */ if ( !( subglyph->flags & FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES ) ) { FT_Int k = subglyph->arg1; FT_UInt l = subglyph->arg2; FT_Vector* p1; FT_Vector* p2; if ( start_point + k >= num_base_points || l >= (FT_UInt)num_new_points ) { error = FT_Err_Invalid_Composite; goto Exit; } l += num_base_points; /* for now, only use the current point coordinates; */ /* we may consider another approach in the near future */ p1 = gloader->base.outline.points + start_point + k; p2 = gloader->base.outline.points + start_point + l; x = p1->x - p2->x; y = p1->y - p2->y; } else { x = FT_MulFix( subglyph->arg1, hints->x_scale ) + hints->x_delta; y = FT_MulFix( subglyph->arg2, hints->y_scale ) + hints->y_delta; x = FT_PIX_ROUND(x); y = FT_PIX_ROUND(y); } { FT_Outline dummy = gloader->base.outline; dummy.points += num_base_points; dummy.n_points = (short)num_new_points; FT_Outline_Translate( &dummy, x, y ); } } } break; default: /* we don't support other formats (yet?) */ error = FT_Err_Unimplemented_Feature; } Hint_Metrics: if ( depth == 0 ) { FT_BBox bbox; /* transform the hinted outline if needed */ if ( loader->transformed ) FT_Outline_Transform( &gloader->base.outline, &loader->trans_matrix ); /* we must translate our final outline by -pp1.x and compute */ /* the new metrics */ if ( loader->pp1.x ) FT_Outline_Translate( &gloader->base.outline, -loader->pp1.x, 0 ); FT_Outline_Get_CBox( &gloader->base.outline, &bbox ); bbox.xMin = FT_PIX_FLOOR( bbox.xMin ); bbox.yMin = FT_PIX_FLOOR( bbox.yMin ); bbox.xMax = FT_PIX_CEIL( bbox.xMax ); bbox.yMax = FT_PIX_CEIL( bbox.yMax ); slot->metrics.width = bbox.xMax - bbox.xMin; slot->metrics.height = bbox.yMax - bbox.yMin; slot->metrics.horiBearingX = bbox.xMin; slot->metrics.horiBearingY = bbox.yMax; /* for mono-width fonts (like Andale, Courier, etc.) we need */ /* to keep the original rounded advance width */ #if 0 if ( !FT_IS_FIXED_WIDTH( slot->face ) ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; else slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, x_scale ); #else /* for mono-width fonts (like Andale, Courier, etc.) we need */ /* to keep the original rounded advance width */ if ( !FT_IS_FIXED_WIDTH( slot->face ) ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; else slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, metrics->scaler.x_scale ); #endif slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance ); /* now copy outline into glyph slot */ FT_GlyphLoader_Rewind( internal->loader ); error = FT_GlyphLoader_CopyPoints( internal->loader, gloader ); if ( error ) goto Exit; slot->outline = internal->loader->base.outline; slot->format = FT_GLYPH_FORMAT_OUTLINE; } #ifdef DEBUG_HINTER af_debug_hinter = hinter; #endif Exit: return error; }