home *** CD-ROM | disk | FTP | other *** search
- /* Copyright (C) 1993, 2000 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL 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 Free Public License (the
- "License") for full details.
-
- Every copy of AFPL 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 AFPL 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.
- */
-
- /*$Id: gxdcolor.h,v 1.3 2000/09/19 19:00:35 lpd Exp $ */
- /* 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))
- void gx_set_rop_no_source(P3(const gx_rop_source_t **psource,
- gx_rop_source_t *pno_source, gx_device *dev));
- #define set_rop_no_source(source, no_source, dev)\
- gx_set_rop_no_source(&(source), &(no_source), dev)
-
- /*
- * Define the device color structure per se.
- */
-
- /* The typedef is in gsdcolor.h. */
- /*typedef struct gx_device_color_type_s gx_device_color_type_t; */
- struct gx_device_color_type_s {
-
- /*
- * In order to simplify memory management, we use a union, but since
- * different variants may have different pointer tracing procedures,
- * we have to define a separate GC structure type for each variant.
- */
-
- gs_memory_type_ptr_t stype;
-
- /*
- * 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));
-
- /*
- * Test whether this color is equal to another.
- */
-
- #define dev_color_proc_equal(proc)\
- bool proc(P2(const gx_device_color *pdevc1, const gx_device_color *pdevc2))
- dev_color_proc_equal((*equal));
-
- };
-
- /* 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_type_t
- #define gx_dc_type_none (&gx_dc_type_data_none)
- gx_dc_type_data_none, /* gxdcolor.c */
- #define gx_dc_type_null (&gx_dc_type_data_null)
- gx_dc_type_data_null, /* gxdcolor.c */
- #define gx_dc_type_pure (&gx_dc_type_data_pure)
- gx_dc_type_data_pure, /* gxdcolor.c */
- /*#define gx_dc_type_pattern (&gx_dc_type_data_pattern) */
- /*gx_dc_type_data_pattern, *//* gspcolor.c */
- #define gx_dc_type_ht_binary (&gx_dc_type_data_ht_binary)
- gx_dc_type_data_ht_binary, /* gxht.c */
- #define gx_dc_type_ht_colored (&gx_dc_type_data_ht_colored)
- gx_dc_type_data_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 */
-