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- /* Copyright (C) 1993, 1995, 1996, 1997 Aladdin Enterprises. All rights reserved.
-
- This file is part of Aladdin Ghostscript.
-
- Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
- or distributor accepts any responsibility for the consequences of using it,
- or for whether it serves any particular purpose or works at all, unless he
- or she says so in writing. Refer to the Aladdin Ghostscript Free Public
- License (the "License") for full details.
-
- Every copy of Aladdin Ghostscript must include a copy of the License,
- normally in a plain ASCII text file named PUBLIC. The License grants you
- the right to copy, modify and redistribute Aladdin Ghostscript, but only
- under certain conditions described in the License. Among other things, the
- License requires that the copyright notice and this notice be preserved on
- all copies.
- */
-
- /* gxdcolor.h */
- /* Device color representation for Ghostscript */
-
- #ifndef gxdcolor_INCLUDED
- # define gxdcolor_INCLUDED
-
- #include "gscsel.h"
- #include "gsdcolor.h"
- #include "gsropt.h"
- #include "gsstruct.h" /* for extern_st, GC procs */
-
- /* Define opaque types. */
-
- #ifndef gx_device_DEFINED
- # define gx_device_DEFINED
- typedef struct gx_device_s gx_device;
- #endif
-
- /*
- * Define a source structure for RasterOp.
- */
- typedef struct gx_rop_source_s {
- const byte *sdata;
- int sourcex;
- uint sraster;
- gx_bitmap_id id;
- gx_color_index scolors[2];
- bool use_scolors;
- } gx_rop_source_t;
- /*
- * Note that the following definition depends on the gx_color_index for
- * black, which may not be 0. Clients must check this and construct
- * a different null source if necessary.
- */
- #define gx_rop_no_source_body(black_pixel)\
- NULL, 0, 0, gx_no_bitmap_id, {black_pixel, black_pixel}, true
- #define gx_rop_source_set_color(prs, pixel)\
- ((prs)->scolors[0] = (prs)->scolors[1] = (pixel))
- extern const gx_rop_source_t gx_rop_no_source_0; /* with black_pixel = 0 */
- #define set_rop_no_source(source, no_source, dev)\
- do {\
- gx_color_index black_ =\
- (*dev_proc(dev, map_rgb_color))(dev, (gx_color_index)0,\
- (gx_color_index)0, (gx_color_index)0);\
- if ( black_ == 0 )\
- source = &gx_rop_no_source_0;\
- else\
- { no_source = gx_rop_no_source_0;\
- gx_rop_source_set_color(&no_source, black_);\
- source = &no_source;\
- }\
- } while (0)
-
- /*
- * Device colors are 'objects' (with very few procedures). In order to
- * simplify memory management, we use a union, but since different variants
- * may have different pointer tracing procedures, we have to include those
- * procedures in the type.
- */
-
- struct gx_device_color_procs_s {
-
- /*
- * If necessary and possible, load the halftone or Pattern cache
- * with the rendering of this color.
- */
-
- #define dev_color_proc_load(proc)\
- int proc(P4(gx_device_color *pdevc, const gs_imager_state *pis,\
- gx_device *dev, gs_color_select_t select))
- dev_color_proc_load((*load));
-
- /*
- * Fill a rectangle with the color.
- * We pass the device separately so that pattern fills can
- * substitute a tiled mask clipping device.
- */
-
- #define dev_color_proc_fill_rectangle(proc)\
- int proc(P8(const gx_device_color *pdevc, int x, int y, int w, int h,\
- gx_device *dev, gs_logical_operation_t lop, const gx_rop_source_t *source))
- dev_color_proc_fill_rectangle((*fill_rectangle));
-
- /*
- * Fill a masked region with a color. Nearly all device colors
- * use the default implementation, which simply parses the mask
- * into rectangles and calls fill_rectangle. Note that in this
- * case there is no RasterOp source: the mask is the source.
- */
-
- #define dev_color_proc_fill_masked(proc)\
- int proc(P12(const gx_device_color *pdevc, const byte *data, int data_x,\
- int raster, gx_bitmap_id id, int x, int y, int w, int h,\
- gx_device *dev, gs_logical_operation_t lop, bool invert))
- dev_color_proc_fill_masked((*fill_masked));
-
- /*
- * Trace the pointers for the garbage collector.
- */
-
- struct_proc_enum_ptrs((*enum_ptrs));
- struct_proc_reloc_ptrs((*reloc_ptrs));
-
- };
-
- /* Define the default implementation of fill_masked. */
- dev_color_proc_fill_masked(gx_dc_default_fill_masked);
-
- extern_st(st_device_color);
- /* public_st_device_color() is defined in gsdcolor.h */
-
- /* Define the standard device color types. */
- /* See gsdcolor.h for details. */
- extern const gx_device_color_procs
- #define gx_dc_type_none (&gx_dc_procs_none)
- gx_dc_procs_none, /* gxdcolor.c */
- #define gx_dc_type_null (&gx_dc_procs_null)
- gx_dc_procs_null, /* gxdcolor.c */
- #define gx_dc_type_pure (&gx_dc_procs_pure)
- gx_dc_procs_pure, /* gxdcolor.c */
- /*#define gx_dc_type_pattern (&gx_dc_procs_pattern)*/
- /*gx_dc_procs_pattern,*/ /* gspcolor.c */
- #define gx_dc_type_ht_binary (&gx_dc_procs_ht_binary)
- gx_dc_procs_ht_binary, /* gxht.c */
- #define gx_dc_type_ht_colored (&gx_dc_procs_ht_colored)
- gx_dc_procs_ht_colored; /* gxcht.c */
-
- #define gs_color_writes_pure(pgs)\
- color_writes_pure((pgs)->dev_color, (pgs)->log_op)
-
- /* Set up device color 1 for writing into a mask cache */
- /* (e.g., the character cache). */
- void gx_set_device_color_1(P1(gs_state *pgs));
-
- /* Remap the color if necessary. */
- int gx_remap_color(P1(gs_state *));
- #define gx_set_dev_color(pgs)\
- if ( !color_is_set((pgs)->dev_color) )\
- { int code_dc = gx_remap_color(pgs);\
- if ( code_dc != 0 ) return code_dc;\
- }
-
- /* Indicate that the device color needs remapping. */
- #define gx_unset_dev_color(pgs)\
- color_unset((pgs)->dev_color)
-
- /* Load the halftone cache in preparation for drawing. */
- #define gx_color_load_select(pdevc, pis, dev, select)\
- (*(pdevc)->type->load)(pdevc, pis, dev, select)
- #define gx_color_load(pdevc, pis, dev)\
- gx_color_load_select(pdevc, pis, dev, gs_color_select_texture)
- #define gs_state_color_load(pgs)\
- gx_color_load((pgs)->dev_color, (const gs_imager_state *)(pgs),\
- (pgs)->device)
-
- /* Fill a rectangle with a color. */
- #define gx_device_color_fill_rectangle(pdevc, x, y, w, h, dev, lop, source)\
- (*(pdevc)->type->fill_rectangle)(pdevc, x, y, w, h, dev, lop, source)
- #define gx_fill_rectangle_device_rop(x, y, w, h, pdevc, dev, lop)\
- gx_device_color_fill_rectangle(pdevc, x, y, w, h, dev, lop, NULL)
- #define gx_fill_rectangle_rop(x, y, w, h, pdevc, lop, pgs)\
- gx_fill_rectangle_device_rop(x, y, w, h, pdevc, (pgs)->device, lop)
- #define gx_fill_rectangle(x, y, w, h, pdevc, pgs)\
- gx_fill_rectangle_rop(x, y, w, h, pdevc, (pgs)->log_op, pgs)
-
- #endif /* gxdcolor_INCLUDED */
-