ref: 53078ee7502c4556a54aacf9ccd09906c623d173
dir: /src/renderer/ftrender.c/
#include <freetype/internal/ftobjs.h> /* sets render-specific mode */ static FT_Error ft_renderer_set_mode( FT_Renderer render, FT_ULong mode_tag, FT_Pointer data ) { /* we simply pass it to the raster */ return render->clazz->raster_class->raster_set_mode( render->raster, mode_tag, data ); } /* convert a slot's glyph image into a bitmap */ static FT_Error ft_renderer_render( FT_Renderer render, FT_GlyphSlot slot, FT_UInt mode ) { FT_Error error; FT_Outline* outline; FT_BBox cbox; FT_UInt width, height, pitch; FT_Bitmap* bitmap; FT_Memory memory; FT_Raster_Params params; /* first of all, transform the outline */ if (slot->format != ft_glyph_format_outline) { error = FT_Err_Invalid_Argument; goto Exit; } outline = &slot->outline; FT_Outline_Transform( outline, &slot->transform_matrix ); FT_Outline_Translate( outline, slot->transform_delta.x, slot->transform_delta.y ); /* compute the control box, and grid fit it */ FT_Outline_Get_CBox( outline, &cbox ); cbox.xMin &= -64; cbox.yMin &= -64; cbox.xMax = (cbox.xMax+63) & -64; cbox.yMax = (cbox.yMax+63) & -64; width = (cbox.xMax - cbox.xMin) >> 6; height = (cbox.yMax - cbox.yMin) >> 6; bitmap = &slot->bitmap; memory = slot->face->memory; /* release old bitmap buffer */ if ((slot->flags & ft_glyph_own_bitmap)) FREE(bitmap->buffer); /* allocate new one, depends on pixel format */ if ( mode & ft_render_mode_antialias ) { pitch = width; bitmap->pixel_mode = ft_pixel_mode_grays; bitmap->num_grays = 256; } else { pitch = (width+7) >> 3; bitmap->pixel_mode = ft_pixel_mode_mono; } bitmap->width = width; bitmap->rows = height; bitmap->pitch = pitch; if (ALLOC( bitmap->buffer, (FT_ULong)pitch * height )) goto Exit; /* translate outline to render it into the bitmap */ FT_Outline_Translate( outline, -cbox.xMin, -cbox.yMin ); /* set up parameters */ params.target = bitmap; params.source = outline; params.flags = 0; if ( bitmap->pixel_mode == ft_pixel_mode_grays ) params.flags |= ft_raster_flag_aa; /* render outline into the bitmap */ error = render->render( render->raster, ¶ms ); if (error) goto Exit; slot->format = ft_glyph_format_bitmap; slot->bitmap_left = cbox.xMin >> 6; slot->bitmap_top = cbox.yMax >> 6; Exit: return error; } #ifndef FT_CONFIG_OPTION_NO_STD_RASTER #include <freetype/ftraster.h> const FT_Renderer_Class ft_standard_renderer_class = { { ft_module_renderer, sizeof( FT_RendererRec ), "standard renderer", 0x10000, 0x20000, 0, /* module specific interface */ (FT_Module_Constructor) 0, (FT_Module_Destructor) 0, (FT_Module_Requester) 0 }, ft_glyph_format_outline, (FTRenderer_render) ft_renderer_render, (FTRenderer_setMode) ft_renderer_set_mode, (FT_Raster_Funcs*) &ft_standard_raster }; #endif /* !FT_CONFIG_OPTION_NO_STD_RASTER */ #ifndef FT_CONFIG_OPTION_NO_SMOOTH_RASTER #include <freetype/ftgrays.h> const FT_Renderer_Class ft_smooth_renderer_class = { { ft_module_renderer, sizeof( FT_RendererRec ), "smooth renderer", 0x10000, 0x20000, 0, /* module specific interface */ (FT_Module_Constructor) 0, (FT_Module_Destructor) 0, (FT_Module_Requester) 0 }, ft_glyph_format_outline, (FTRenderer_render) ft_renderer_render, (FTRenderer_setMode) ft_renderer_set_mode, (FT_Raster_Funcs*) &ft_grays_raster }; #endif /* !FT_CONFIG_OPTION_NO_SMOOTH_RASTER */