home *** CD-ROM | disk | FTP | other *** search
- /* Copyright (C) 1989, 1990, 1991 Aladdin Enterprises. All rights reserved.
- Distributed by Free Software Foundation, Inc.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* gxdevice.h */
- /* Device description structure for GhostScript library */
- /* Requires gsmatrix.h */
-
- /* Define the structure for bitmaps (opaquely). */
- typedef struct gx_bitmap_s gx_bitmap;
-
- /* Define the type for device color indices. */
- typedef unsigned long gx_color_index;
- /* Define the 'transparent' color index. */
- #define gx_no_color_value (-1) /* no cast -> can be used in #if */
- #define gx_no_color_index ((gx_color_index)gx_no_color_value)
-
- /* See drivers.doc for documentation of the driver interface. */
-
- /* Structure for device procedures */
- typedef struct gx_device_procs_s gx_device_procs;
-
- /* Structure for generic device description */
- #define gx_device_common\
- int params_size; /* size of this structure */\
- gx_device_procs *procs;\
- char *dname; /* the device name */\
- int width; /* width in pixels */\
- int height; /* height in pixels */\
- float x_pixels_per_inch; /* x density */\
- float y_pixels_per_inch; /* y density */\
- float l_margin, b_margin, r_margin, t_margin; /* margins around */\
- /* imageable area, in inches */\
- int has_color; /* true if device supports color */\
- unsigned short max_rgb_value; /* max r, g, b value */\
- int bits_per_color_pixel; /* for copy_color */\
- int is_open /* true if device has been opened */
- #define no_margins 0, 0, 0, 0
- /* A generic device */
- struct gx_device_s {
- gx_device_common;
- };
- #ifndef gx_device_DEFINED
- # define gx_device_DEFINED
- typedef struct gx_device_s gx_device;
- #endif
-
- /* Definition of device procedures */
- struct gx_device_procs_s {
-
- #define dev_proc_open_device(proc)\
- int proc(P1(gx_device *dev))
- dev_proc_open_device((*open_device));
-
- #define dev_proc_get_initial_matrix(proc)\
- void proc(P2(gx_device *dev, gs_matrix *pmat))
- dev_proc_get_initial_matrix((*get_initial_matrix));
-
- #define dev_proc_sync_output(proc)\
- int proc(P1(gx_device *dev))
- dev_proc_sync_output((*sync_output));
-
- #define dev_proc_output_page(proc)\
- int proc(P1(gx_device *dev))
- dev_proc_output_page((*output_page));
-
- #define dev_proc_close_device(proc)\
- int proc(P1(gx_device *dev))
- dev_proc_close_device((*close_device));
-
- #define dev_proc_map_rgb_color(proc)\
- gx_color_index proc(P4(gx_device *dev,\
- unsigned short red, unsigned short green, unsigned short blue))
- dev_proc_map_rgb_color((*map_rgb_color));
-
- #define dev_proc_map_color_rgb(proc)\
- int proc(P3(gx_device *dev,\
- gx_color_index color, unsigned short rgb[3]))
- dev_proc_map_color_rgb((*map_color_rgb));
-
- #define dev_proc_fill_rectangle(proc)\
- int proc(P6(gx_device *dev,\
- int x, int y, int width, int height, gx_color_index color))
- dev_proc_fill_rectangle((*fill_rectangle));
-
- #define dev_proc_tile_rectangle(proc)\
- int proc(P10(gx_device *dev,\
- gx_bitmap *tile, int x, int y, int width, int height,\
- gx_color_index color0, gx_color_index color1,\
- int phase_x, int phase_y))
- dev_proc_tile_rectangle((*tile_rectangle));
-
- #define dev_proc_copy_mono(proc)\
- int proc(P10(gx_device *dev,\
- unsigned char *data, int data_x, int raster,\
- int x, int y, int width, int height,\
- gx_color_index color0, gx_color_index color1))
- dev_proc_copy_mono((*copy_mono));
-
- #define dev_proc_copy_color(proc)\
- int proc(P8(gx_device *dev,\
- unsigned char *data, int data_x, int raster,\
- int x, int y, int width, int height))
- dev_proc_copy_color((*copy_color));
-
- #define dev_proc_draw_line(proc)\
- int proc(P6(gx_device *dev,\
- int x0, int y0, int x1, int y1, gx_color_index color))
- dev_proc_draw_line((*draw_line));
-
- #define dev_proc_fill_trapezoid(proc)\
- int proc(P8(gx_device *dev,\
- int x0, int y0, int width0, int x1, int y1, int width1,\
- gx_color_index color))
- dev_proc_fill_trapezoid((*fill_trapezoid));
-
- #define dev_proc_tile_trapezoid(proc)\
- int proc(P12(gx_device *dev, gx_bitmap *tile,\
- int x0, int y0, int width0, int x1, int y1, int width1,\
- gx_color_index color0, gx_color_index color1,\
- int phase_x, int phase_y))
- dev_proc_tile_trapezoid((*tile_trapezoid));
-
- };
-
- /* Default implementations of optional procedures */
- dev_proc_open_device(gx_default_open_device);
- dev_proc_get_initial_matrix(gx_default_get_initial_matrix);
- dev_proc_sync_output(gx_default_sync_output);
- dev_proc_output_page(gx_default_output_page);
- dev_proc_close_device(gx_default_close_device);
- dev_proc_map_rgb_color(gx_default_map_rgb_color);
- dev_proc_map_color_rgb(gx_default_map_color_rgb);
- dev_proc_tile_rectangle(gx_default_tile_rectangle);
- dev_proc_draw_line(gx_default_draw_line);
- dev_proc_fill_trapezoid(gx_default_fill_trapezoid);
- dev_proc_tile_trapezoid(gx_default_tile_trapezoid);
-