f04d81751a
This commit enables OpenType's COLR/CPAL table handling; a typical application are color emojis that can be scaled to any size. If the color palette does not exist or is invalid, the rendering step rasterizes the outline instead. The current implementation assumes that the foreground is black. Enable this by defining option TT_CONFIG_OPTION_COLOR_LAYERS. There are still some issues with metrics; additionally, an API to fetch color layers is missing. * devel/ftoption.h, include/freetype/config/ftoption.h (TT_CONFIG_OPTION_COLOR_LAYERS): New macro. * include/freetype/internal/ftobjs.h (FT_Glyph_LayerRec, FT_Colr_InternalRec): New structures. (FT_Slot_InternalRec): Add `color_layers' field. * include/freetype/internal/sfnt.h (TT_Load_Colr_Layer_Func, TT_Blend_Colr_Func): New function types. (SFNT_Interface): Add `load_colr', `free_colr', `load_colr_layer', and `colr_blend' fields. * include/freetype/internal/tttypes.h (TT_FaceRec): Add `colr_and_cpal' field. * include/freetype/internal/tttags. (TTAG_COLR, TTAG_CPAL): New macros. * src/sfnt/ttcolr.c, src/sfnt/ttcolr.h: New files. * src/base/ftobjs.c (ft_glyphslot_done, FT_Render_Glyph_Internal): Handle glyph color layers. * src/sfnt/Jamfile (_sources), src/sfnt/rules.mk (SFNT_DRV_SRC): Add `ttcolr.c'. * src/sfnt/sfdriver.c: Include `ttcolr.h'. (PUT_COLOR_LAYERS): New macro. Update call to `FT_DEFINE_SFNT_INTERFACE'. * src/sfnt/sfnt.c: Include `ttcolr.c'. * src/sfnt/sfobjs.c (sfnt_load_face): Load `COLR' and `CPAL' tables. (sfnt_done_face): Updated. * src/truetype/ttgload.c (TT_Load_Glyph): Handle color layers.
82 lines
2.1 KiB
Makefile
82 lines
2.1 KiB
Makefile
#
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# FreeType 2 SFNT driver configuration rules
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#
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# Copyright 1996-2018 by
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# David Turner, Robert Wilhelm, and Werner Lemberg.
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#
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# This file is part of the FreeType project, and may only be used, modified,
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# and distributed under the terms of the FreeType project license,
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# LICENSE.TXT. By continuing to use, modify, or distribute this file you
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# indicate that you have read the license and understand and accept it
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# fully.
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# SFNT driver directory
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#
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SFNT_DIR := $(SRC_DIR)/sfnt
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# compilation flags for the driver
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#
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SFNT_COMPILE := $(CC) $(ANSIFLAGS) \
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$I$(subst /,$(COMPILER_SEP),$(SFNT_DIR)) \
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$(INCLUDE_FLAGS) \
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$(FT_CFLAGS)
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# SFNT driver sources (i.e., C files)
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#
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SFNT_DRV_SRC := $(SFNT_DIR)/ttload.c \
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$(SFNT_DIR)/ttmtx.c \
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$(SFNT_DIR)/ttcmap.c \
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$(SFNT_DIR)/ttsbit.c \
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$(SFNT_DIR)/ttcolr.c \
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$(SFNT_DIR)/ttpost.c \
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$(SFNT_DIR)/ttkern.c \
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$(SFNT_DIR)/ttbdf.c \
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$(SFNT_DIR)/sfobjs.c \
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$(SFNT_DIR)/sfdriver.c \
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$(SFNT_DIR)/pngshim.c
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# SFNT driver headers
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#
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SFNT_DRV_H := $(SFNT_DRV_SRC:%c=%h) \
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$(SFNT_DIR)/sferrors.h
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# SFNT driver object(s)
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#
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# SFNT_DRV_OBJ_M is used during `multi' builds.
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# SFNT_DRV_OBJ_S is used during `single' builds.
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#
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SFNT_DRV_OBJ_M := $(SFNT_DRV_SRC:$(SFNT_DIR)/%.c=$(OBJ_DIR)/%.$O)
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SFNT_DRV_OBJ_S := $(OBJ_DIR)/sfnt.$O
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# SFNT driver source file for single build
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#
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SFNT_DRV_SRC_S := $(SFNT_DIR)/sfnt.c
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# SFNT driver - single object
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#
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$(SFNT_DRV_OBJ_S): $(SFNT_DRV_SRC_S) $(SFNT_DRV_SRC) \
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$(FREETYPE_H) $(SFNT_DRV_H)
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$(SFNT_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $(SFNT_DRV_SRC_S))
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# SFNT driver - multiple objects
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#
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$(OBJ_DIR)/%.$O: $(SFNT_DIR)/%.c $(FREETYPE_H) $(SFNT_DRV_H)
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$(SFNT_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $<)
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# update main driver object lists
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#
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DRV_OBJS_S += $(SFNT_DRV_OBJ_S)
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DRV_OBJS_M += $(SFNT_DRV_OBJ_M)
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# EOF
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