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Diffstat (limited to 'gs/src/gdevnfwd.c')
| -rw-r--r-- | gs/src/gdevnfwd.c | 560 |
1 files changed, 560 insertions, 0 deletions
diff --git a/gs/src/gdevnfwd.c b/gs/src/gdevnfwd.c new file mode 100644 index 000000000..3cddeca64 --- /dev/null +++ b/gs/src/gdevnfwd.c @@ -0,0 +1,560 @@ +/* Copyright (C) 1996, 1997, 1998 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. +*/ + +/* gdevnfwd.c */ +/* Null and forwarding device implementation */ +#include "gx.h" +#include "gxdevice.h" + +/* ---------------- Forwarding procedures ---------------- */ + +#define fdev ((gx_device_forward *)dev) + +/* Fill in NULL procedures in a forwarding device procedure record. */ +/* We don't fill in: open_device, close_device, or the lowest-level */ +/* drawing operations. */ +void +gx_device_forward_fill_in_procs(register gx_device_forward *dev) +{ gx_device_set_procs((gx_device *)dev); + /* NOT open_device */ + fill_dev_proc(dev, get_initial_matrix, gx_forward_get_initial_matrix); + fill_dev_proc(dev, sync_output, gx_forward_sync_output); + fill_dev_proc(dev, output_page, gx_forward_output_page); + /* NOT close_device */ + fill_dev_proc(dev, map_rgb_color, gx_forward_map_rgb_color); + fill_dev_proc(dev, map_color_rgb, gx_forward_map_color_rgb); + /* NOT fill_rectangle */ + /* NOT tile_rectangle */ + /* NOT copy_mono */ + /* NOT copy_color */ + /* NOT draw_line (OBSOLETE) */ + fill_dev_proc(dev, get_bits, gx_forward_get_bits); + fill_dev_proc(dev, get_params, gx_forward_get_params); + fill_dev_proc(dev, put_params, gx_forward_put_params); + fill_dev_proc(dev, map_cmyk_color, gx_forward_map_cmyk_color); + fill_dev_proc(dev, get_xfont_procs, gx_forward_get_xfont_procs); + fill_dev_proc(dev, get_xfont_device, gx_forward_get_xfont_device); + fill_dev_proc(dev, map_rgb_alpha_color, gx_forward_map_rgb_alpha_color); + fill_dev_proc(dev, get_page_device, gx_forward_get_page_device); + fill_dev_proc(dev, get_alpha_bits, gx_forward_get_alpha_bits); + /* NOT copy_alpha */ + fill_dev_proc(dev, get_band, gx_forward_get_band); + fill_dev_proc(dev, copy_rop, gx_forward_copy_rop_proc); + fill_dev_proc(dev, fill_path, gx_forward_fill_path); + fill_dev_proc(dev, stroke_path, gx_forward_stroke_path); + fill_dev_proc(dev, fill_mask, gx_forward_fill_mask); + fill_dev_proc(dev, fill_trapezoid, gx_forward_fill_trapezoid); + fill_dev_proc(dev, fill_parallelogram, gx_forward_fill_parallelogram); + fill_dev_proc(dev, fill_triangle, gx_forward_fill_triangle); + fill_dev_proc(dev, draw_thin_line, gx_forward_draw_thin_line); + fill_dev_proc(dev, begin_image, gx_forward_begin_image); + fill_dev_proc(dev, image_data, gx_forward_image_data); + fill_dev_proc(dev, end_image, gx_forward_end_image); + /* NOT strip_tile_rectangle */ + fill_dev_proc(dev, strip_copy_rop, gx_forward_strip_copy_rop_proc); + fill_dev_proc(dev, get_clipping_box, gx_forward_get_clipping_box); + fill_dev_proc(dev, get_hardware_params, gx_forward_get_hardware_params); + gx_device_fill_in_procs((gx_device *)dev); +} + +/* Forward the color mapping procedures from a device to its target. */ +void +gx_device_forward_color_procs(gx_device_forward *dev) +{ set_dev_proc(dev, map_rgb_color, gx_forward_map_rgb_color); + set_dev_proc(dev, map_color_rgb, gx_forward_map_color_rgb); + set_dev_proc(dev, map_cmyk_color, gx_forward_map_cmyk_color); + set_dev_proc(dev, map_rgb_alpha_color, gx_forward_map_rgb_alpha_color); +} + +void +gx_forward_get_initial_matrix(gx_device *dev, gs_matrix *pmat) +{ gx_device *tdev = fdev->target; + if ( tdev == 0 ) + gx_default_get_initial_matrix(dev, pmat); + else + (*dev_proc(tdev, get_initial_matrix))(tdev, pmat); +} + +int +gx_forward_sync_output(gx_device *dev) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_sync_output(dev) : + (*dev_proc(tdev, sync_output))(tdev)); +} + +int +gx_forward_output_page(gx_device *dev, int num_copies, int flush) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_output_page(dev, num_copies, flush) : + (*dev_proc(tdev, output_page))(tdev, num_copies, flush)); +} + +gx_color_index +gx_forward_map_rgb_color(gx_device *dev, gx_color_value r, gx_color_value g, + gx_color_value b) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_map_rgb_color(dev, r, g, b) : + (*dev_proc(tdev, map_rgb_color))(tdev, r, g, b)); +} + +int +gx_forward_map_color_rgb(gx_device *dev, gx_color_index color, + gx_color_value prgb[3]) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_map_color_rgb(dev, color, prgb) : + (*dev_proc(tdev, map_color_rgb))(tdev, color, prgb)); +} + +int +gx_forward_tile_rectangle(gx_device *dev, const gx_tile_bitmap *tile, + int x, int y, int w, int h, gx_color_index color0, gx_color_index color1, + int px, int py) +{ gx_device *tdev = fdev->target; + dev_proc_tile_rectangle((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_tile_rectangle; + else + proc = dev_proc(tdev, tile_rectangle); + return (*proc)(tdev, tile, x, y, w, h, color0, color1, px, py); +} + +int +gx_forward_get_bits(gx_device *dev, int y, byte *data, byte **actual_data) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_get_bits(dev, y, data, actual_data) : + (*dev_proc(tdev, get_bits))(tdev, y, data, actual_data)); +} + +int +gx_forward_get_params(gx_device *dev, gs_param_list *plist) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_get_params(dev, plist) : + (*dev_proc(tdev, get_params))(tdev, plist)); +} + +int +gx_forward_put_params(gx_device *dev, gs_param_list *plist) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_put_params(dev, plist) : + (*dev_proc(tdev, put_params))(tdev, plist)); +} + +gx_color_index +gx_forward_map_cmyk_color(gx_device *dev, gx_color_value c, gx_color_value m, + gx_color_value y, gx_color_value k) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_map_cmyk_color(dev, c, m, y, k) : + (*dev_proc(tdev, map_cmyk_color))(tdev, c, m, y, k)); +} + +gx_xfont_procs * +gx_forward_get_xfont_procs(gx_device *dev) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_get_xfont_procs(dev) : + (*dev_proc(tdev, get_xfont_procs))(tdev)); +} + +gx_device * +gx_forward_get_xfont_device(gx_device *dev) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_get_xfont_device(dev) : + (*dev_proc(tdev, get_xfont_device))(tdev)); +} + +gx_color_index +gx_forward_map_rgb_alpha_color(gx_device *dev, gx_color_value r, + gx_color_value g, gx_color_value b, gx_color_value alpha) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? + gx_default_map_rgb_alpha_color(dev, r, g, b, alpha) : + (*dev_proc(tdev, map_rgb_alpha_color))(tdev, r, g, b, alpha)); +} + +gx_device * +gx_forward_get_page_device(gx_device *dev) +{ gx_device *tdev = fdev->target; + gx_device *pdev; + + if ( tdev == 0 ) + return gx_default_get_page_device(dev); + pdev = (*dev_proc(tdev, get_page_device))(tdev); + return (pdev == tdev ? dev : pdev); +} + +int +gx_forward_get_alpha_bits(gx_device *dev, graphics_object_type type) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? + gx_default_get_alpha_bits(dev, type) : + (*dev_proc(tdev, get_alpha_bits))(tdev, type)); +} + +int +gx_forward_get_band(gx_device *dev, int y, int *band_start) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? + gx_default_get_band(dev, y, band_start) : + (*dev_proc(tdev, get_band))(tdev, y, band_start)); +} + +int +gx_forward_fill_path(gx_device *dev, const gs_imager_state *pis, + gx_path *ppath, const gx_fill_params *params, + const gx_drawing_color *pdcolor, const gx_clip_path *pcpath) +{ gx_device *tdev = fdev->target; + dev_proc_fill_path((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_fill_path; + else + proc = dev_proc(tdev, fill_path); + return (*proc)(tdev, pis, ppath, params, pdcolor, pcpath); +} + +int +gx_forward_stroke_path(gx_device *dev, const gs_imager_state *pis, + gx_path *ppath, const gx_stroke_params *params, + const gx_drawing_color *pdcolor, const gx_clip_path *pcpath) +{ gx_device *tdev = fdev->target; + dev_proc_stroke_path((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_stroke_path; + else + proc = dev_proc(tdev, stroke_path); + return (*proc)(tdev, pis, ppath, params, pdcolor, pcpath); +} + +int +gx_forward_fill_mask(gx_device *dev, + const byte *data, int dx, int raster, gx_bitmap_id id, + int x, int y, int w, int h, + const gx_drawing_color *pdcolor, int depth, + gs_logical_operation_t lop, const gx_clip_path *pcpath) +{ gx_device *tdev = fdev->target; + dev_proc_fill_mask((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_fill_mask; + else + proc = dev_proc(tdev, fill_mask); + return (*proc)(tdev, data, dx, raster, id, x, y, w, h, pdcolor, depth, + lop, pcpath); +} + +int +gx_forward_fill_trapezoid(gx_device *dev, + const gs_fixed_edge *left, const gs_fixed_edge *right, + fixed ybot, fixed ytop, bool swap_axes, + const gx_drawing_color *pdcolor, gs_logical_operation_t lop) +{ gx_device *tdev = fdev->target; + dev_proc_fill_trapezoid((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_fill_trapezoid; + else + proc = dev_proc(tdev, fill_trapezoid); + return (*proc)(tdev, left, right, ybot, ytop, swap_axes, pdcolor, lop); +} + +int +gx_forward_fill_parallelogram(gx_device *dev, + fixed px, fixed py, fixed ax, fixed ay, fixed bx, fixed by, + const gx_drawing_color *pdcolor, gs_logical_operation_t lop) +{ gx_device *tdev = fdev->target; + dev_proc_fill_parallelogram((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_fill_parallelogram; + else + proc = dev_proc(tdev, fill_parallelogram); + return (*proc)(tdev, px, py, ax, ay, bx, by, pdcolor, lop); +} + +int +gx_forward_fill_triangle(gx_device *dev, + fixed px, fixed py, fixed ax, fixed ay, fixed bx, fixed by, + const gx_drawing_color *pdcolor, gs_logical_operation_t lop) +{ gx_device *tdev = fdev->target; + dev_proc_fill_triangle((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_fill_triangle; + else + proc = dev_proc(tdev, fill_triangle); + return (*proc)(tdev, px, py, ax, ay, bx, by, pdcolor, lop); +} + +int +gx_forward_draw_thin_line(gx_device *dev, + fixed fx0, fixed fy0, fixed fx1, fixed fy1, + const gx_drawing_color *pdcolor, gs_logical_operation_t lop) +{ gx_device *tdev = fdev->target; + dev_proc_draw_thin_line((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_draw_thin_line; + else + proc = dev_proc(tdev, draw_thin_line); + return (*proc)(tdev, fx0, fy0, fx1, fy1, pdcolor, lop); +} + +int +gx_forward_begin_image(gx_device *dev, + const gs_imager_state *pis, const gs_image_t *pim, + gs_image_format_t format, const gs_int_rect *prect, + const gx_drawing_color *pdcolor, const gx_clip_path *pcpath, + gs_memory_t *memory, void **pinfo) +{ gx_device *tdev = fdev->target; + dev_proc_begin_image((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_begin_image; + else + proc = dev_proc(tdev, begin_image); + return (*proc)(tdev, pis, pim, format, prect, pdcolor, pcpath, + memory, pinfo); +} + +int +gx_forward_image_data(gx_device *dev, + void *info, const byte **planes, int data_x, uint raster, int height) +{ gx_device *tdev = fdev->target; + dev_proc_image_data((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_image_data; + else + proc = dev_proc(tdev, image_data); + return (*proc)(tdev, info, planes, data_x, raster, height); +} + +int +gx_forward_end_image(gx_device *dev, + void *info, bool draw_last) +{ gx_device *tdev = fdev->target; + dev_proc_end_image((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_end_image; + else + proc = dev_proc(tdev, end_image); + return (*proc)(tdev, info, draw_last); +} + +int +gx_forward_strip_tile_rectangle(gx_device *dev, const gx_strip_bitmap *tiles, + int x, int y, int w, int h, gx_color_index color0, gx_color_index color1, + int px, int py) +{ gx_device *tdev = fdev->target; + dev_proc_strip_tile_rectangle((*proc)); + + if ( tdev == 0 ) + tdev = dev, proc = gx_default_strip_tile_rectangle; + else + proc = dev_proc(tdev, strip_tile_rectangle); + return (*proc)(tdev, tiles, x, y, w, h, color0, color1, px, py); +} + +void +gx_forward_get_clipping_box(gx_device *dev, gs_fixed_rect *pbox) +{ gx_device *tdev = fdev->target; + + if ( tdev == 0 ) + gx_default_get_clipping_box(dev, pbox); + else + (*dev_proc(tdev, get_clipping_box))(tdev, pbox); +} + +int +gx_forward_get_hardware_params(gx_device *dev, gs_param_list *plist) +{ gx_device *tdev = fdev->target; + return (tdev == 0 ? gx_default_get_hardware_params(dev, plist) : + (*dev_proc(tdev, get_hardware_params))(tdev, plist)); +} + +/* ---------------- The null device(s) ---------------- */ + +private dev_proc_fill_rectangle(null_fill_rectangle); +private dev_proc_copy_mono(null_copy_mono); +private dev_proc_copy_color(null_copy_color); +private dev_proc_put_params(null_put_params); +private dev_proc_copy_alpha(null_copy_alpha); +private dev_proc_copy_rop(null_copy_rop); +private dev_proc_fill_path(null_fill_path); +private dev_proc_stroke_path(null_stroke_path); +private dev_proc_fill_trapezoid(null_fill_trapezoid); +private dev_proc_fill_parallelogram(null_fill_parallelogram); +private dev_proc_fill_triangle(null_fill_triangle); +private dev_proc_draw_thin_line(null_draw_thin_line); +/* We would like to have null implementations of begin/data/end image, */ +/* but we can't do this, because image_data must keep track of the */ +/* Y position so it can return 1 when done. */ +private dev_proc_strip_copy_rop(null_strip_copy_rop); + +#define null_procs(get_page_device) {\ + gx_default_open_device,\ + gx_forward_get_initial_matrix,\ + gx_default_sync_output,\ + gx_default_output_page,\ + gx_default_close_device,\ + gx_forward_map_rgb_color,\ + gx_forward_map_color_rgb,\ + null_fill_rectangle,\ + gx_default_tile_rectangle,\ + null_copy_mono,\ + null_copy_color,\ + gx_default_draw_line,\ + gx_default_get_bits,\ + gx_forward_get_params,\ + null_put_params,\ + gx_forward_map_cmyk_color,\ + gx_forward_get_xfont_procs,\ + gx_forward_get_xfont_device,\ + gx_forward_map_rgb_alpha_color,\ + get_page_device, /* differs */\ + gx_forward_get_alpha_bits,\ + null_copy_alpha,\ + gx_forward_get_band,\ + null_copy_rop,\ + null_fill_path,\ + null_stroke_path,\ + gx_default_fill_mask,\ + null_fill_trapezoid,\ + null_fill_parallelogram,\ + null_fill_triangle,\ + null_draw_thin_line,\ + gx_default_begin_image,\ + gx_default_image_data,\ + gx_default_end_image,\ + gx_default_strip_tile_rectangle,\ + null_strip_copy_rop,\ + gx_default_get_clipping_box,\ + gx_forward_get_hardware_params\ +} + +gx_device_null far_data gs_null_device = { + std_device_std_body_open(gx_device_null, 0, "null", + 0, 0, 72, 72), + null_procs(gx_default_get_page_device /* not a page device */), + 0 /* target */ +}; + +gx_device_null far_data gs_nullpage_device = { + std_device_std_body_open(gx_device_null, 0, "nullpage", + 0, 0, 72, 72), + null_procs(gx_page_device_get_page_device /* a page device */), + 0 /* target */ +}; + +private int +null_fill_rectangle(gx_device *dev, int x, int y, int w, int h, + gx_color_index color) +{ return 0; +} +private int +null_copy_mono(gx_device *dev, const byte *data, + int dx, int raster, gx_bitmap_id id, int x, int y, int w, int h, + gx_color_index zero, gx_color_index one) +{ return 0; +} +private int +null_copy_color(gx_device *dev, const byte *data, + int data_x, int raster, gx_bitmap_id id, + int x, int y, int width, int height) +{ return 0; +} +private int +null_put_params(gx_device *dev, gs_param_list *plist) +{ /* We must defeat attempts to reset the size; */ + /* otherwise this is equivalent to gx_forward_put_params. */ + gx_device *tdev = fdev->target; + int code; + + if ( tdev != 0 ) + return (*dev_proc(tdev, put_params))(tdev, plist); + code = gx_default_put_params(dev, plist); + if ( code < 0 ) + return code; + dev->width = dev->height = 0; + return code; +} +private int +null_copy_alpha(gx_device *dev, const byte *data, int data_x, + int raster, gx_bitmap_id id, int x, int y, int width, int height, + gx_color_index color, int depth) +{ return 0; +} +private int +null_copy_rop(gx_device *dev, + const byte *sdata, int sourcex, uint sraster, gx_bitmap_id id, + const gx_color_index *scolors, + const gx_tile_bitmap *texture, const gx_color_index *tcolors, + int x, int y, int width, int height, + int phase_x, int phase_y, gs_logical_operation_t lop) +{ return 0; +} +private int +null_fill_path(gx_device *dev, const gs_imager_state *pis, + gx_path *ppath, const gx_fill_params *params, + const gx_drawing_color *pdcolor, const gx_clip_path *pcpath) +{ return 0; +} +private int +null_stroke_path(gx_device *dev, const gs_imager_state *pis, + gx_path *ppath, const gx_stroke_params *params, + const gx_drawing_color *pdcolor, const gx_clip_path *pcpath) +{ return 0; +} +private int +null_fill_trapezoid(gx_device *dev, + const gs_fixed_edge *left, const gs_fixed_edge *right, + fixed ybot, fixed ytop, bool swap_axes, + const gx_drawing_color *pdcolor, gs_logical_operation_t lop) +{ return 0; +} +private int +null_fill_parallelogram(gx_device *dev, + fixed px, fixed py, fixed ax, fixed ay, fixed bx, fixed by, + const gx_drawing_color *pdcolor, gs_logical_operation_t lop) +{ return 0; +} +private int +null_fill_triangle(gx_device *dev, + fixed px, fixed py, fixed ax, fixed ay, fixed bx, fixed by, + const gx_drawing_color *pdcolor, gs_logical_operation_t lop) +{ return 0; +} +private int +null_draw_thin_line(gx_device *dev, + fixed fx0, fixed fy0, fixed fx1, fixed fy1, + const gx_drawing_color *pdcolor, gs_logical_operation_t lop) +{ return 0; +} +private int +null_strip_copy_rop(gx_device *dev, + const byte *sdata, int sourcex, uint sraster, gx_bitmap_id id, + const gx_color_index *scolors, + const gx_strip_bitmap *textures, const gx_color_index *tcolors, + int x, int y, int width, int height, + int phase_x, int phase_y, gs_logical_operation_t lop) +{ return 0; +} + +#undef fdev |