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- /* Copyright (C) 1989, 1995, 1996 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.
- */
-
- /* gdevmswn.c */
- /*
- * Microsoft Windows 3.n driver for Ghostscript.
- * Original version by Russell Lang and Maurice Castro with help from
- * Programming Windows, 2nd Ed., Charles Petzold, Microsoft Press;
- * created from gdevbgi.c and gnuplot/term/win.trm 5th June 1992.
- * Extensively modified by L. Peter Deutsch, Aladdin Enterprises.
- */
- #include "gdevmswn.h"
- #include "gp.h"
- #include "gpcheck.h"
- #include "gsparam.h"
- #include "gdevpccm.h"
- #include "gsdll.h"
-
- /* Forward references */
- private int win_set_bits_per_pixel(P2(gx_device_win *, int));
-
- #define TIMER_ID 1
-
- /* Open the win driver */
- int
- win_open(gx_device *dev)
- { HDC hdc;
- int code;
-
- if (dev->width == INITIAL_WIDTH)
- dev->width = (int)(8.5 * dev->x_pixels_per_inch);
- if (dev->height == INITIAL_HEIGHT)
- dev->height = (int)(11.0 * dev->y_pixels_per_inch);
-
- if (wdev->BitsPerPixel == 0) {
- int depth;
- /* Set parameters that were unknown before opening device */
- /* Find out if the device supports color */
- /* We recognize 1, 4, 8, 24 bit/pixel devices */
- hdc = GetDC(NULL); /* get hdc for desktop */
- depth = GetDeviceCaps(hdc,PLANES) * GetDeviceCaps(hdc,BITSPIXEL);
- if (depth > 8) {
- wdev->BitsPerPixel = 24;
- }
- else if (depth >= 8) {
- wdev->BitsPerPixel = 8;
- }
- else if (depth >= 4) {
- wdev->BitsPerPixel = 4;
- }
- else {
- wdev->BitsPerPixel = 1;
- }
- ReleaseDC(NULL,hdc);
- wdev->mapped_color_flags = 0;
- }
-
- if ( (code = win_set_bits_per_pixel(wdev, wdev->BitsPerPixel)) < 0 )
- return code;
-
- if (wdev->nColors > 0) {
- /* create palette for display */
- if ((wdev->limgpalette = win_makepalette(wdev))
- == (LPLOGPALETTE)NULL)
- return win_nomemory();
- wdev->himgpalette = CreatePalette(wdev->limgpalette);
- }
-
- return 0;
- }
-
- /* Make the output appear on the screen. */
- int
- win_sync_output(gx_device *dev)
- {
- (*pgsdll_callback)(GSDLL_SYNC, (unsigned char *)wdev, 0);
- return(0);
- }
-
- /* Make the window visible, and display the output. */
- int
- win_output_page(gx_device *dev, int copies, int flush)
- {
- (*pgsdll_callback)(GSDLL_PAGE, (unsigned char *)wdev, 0);
- return 0;
- }
-
- /* Close the win driver */
- int
- win_close(gx_device *dev)
- {
- /* Free resources */
- if (wdev->nColors > 0) {
- gs_free(wdev->mapped_color_flags, 4096, 1, "win_set_bits_per_pixel");
- DeleteObject(wdev->himgpalette);
- gs_free((char *)(wdev->limgpalette), 1, sizeof(LOGPALETTE) +
- (1<<(wdev->color_info.depth)) * sizeof(PALETTEENTRY),
- "win_close");
- }
- return(0);
- }
-
- /* Map a r-g-b color to the colors available under Windows */
- gx_color_index
- win_map_rgb_color(gx_device *dev, gx_color_value r, gx_color_value g,
- gx_color_value b)
- {
- switch(wdev->BitsPerPixel) {
- case 24:
- return (((unsigned long)b >> (gx_color_value_bits - 8)) << 16) +
- (((unsigned long)g >> (gx_color_value_bits - 8)) << 8) +
- (((unsigned long)r >> (gx_color_value_bits - 8)));
- case 8: {
- int i;
- LPLOGPALETTE lpal = wdev->limgpalette;
- PALETTEENTRY *pep;
- byte cr, cg, cb;
- int mc_index;
- byte mc_mask;
-
- /* Check for a color in the palette of 64. */
- { static const byte pal64[32] = {
- 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 1
- };
- if ( pal64[r >> (gx_color_value_bits - 5)] &&
- pal64[g >> (gx_color_value_bits - 5)] &&
- pal64[b >> (gx_color_value_bits - 5)]
- )
- return (gx_color_index)(
- ((r >> (gx_color_value_bits - 2)) << 4) +
- ((g >> (gx_color_value_bits - 2)) << 2) +
- (b >> (gx_color_value_bits - 2))
- );
- }
-
- /* map colors to 0->255 in 32 steps */
- cr = win_color_value(r);
- cg = win_color_value(g);
- cb = win_color_value(b);
-
- /* Search in palette, skipping the first 64. */
- mc_index = ((cr >> 3) << 7) + ((cg >> 3) << 2) + (cb >> 6);
- mc_mask = 0x80 >> ((cb >> 3) & 7);
- if ( wdev->mapped_color_flags[mc_index] & mc_mask )
- for ( i = wdev->nColors, pep = &lpal->palPalEntry[i];
- --pep, --i >= 64;
- )
- { if ( cr == pep->peRed &&
- cg == pep->peGreen &&
- cb == pep->peBlue
- )
- return((gx_color_index)i); /* found it */
- }
-
- /* next try adding it to palette */
- i = wdev->nColors;
- if (i < 220) { /* allow 36 for windows and other apps */
- LPLOGPALETTE lipal = wdev->limgpalette;
- wdev->nColors = i+1;
-
- DeleteObject(wdev->himgpalette);
- lipal->palPalEntry[i].peFlags = 0;
- lipal->palPalEntry[i].peRed = cr;
- lipal->palPalEntry[i].peGreen = cg;
- lipal->palPalEntry[i].peBlue = cb;
- lipal->palNumEntries = wdev->nColors;
- wdev->himgpalette = CreatePalette(lipal);
-
- wdev->mapped_color_flags[mc_index] |= mc_mask;
- return((gx_color_index)i); /* return new palette index */
- }
-
- return(gx_no_color_index); /* not found - dither instead */
- }
- case 4:
- if ((r == g) && (g == b) && (r >= gx_max_color_value / 3 * 2 - 1)
- && (r < gx_max_color_value / 4 * 3))
- return ((gx_color_index)8); /* light gray */
- return pc_4bit_map_rgb_color(dev, r, g, b);
- }
- return (gx_default_map_rgb_color(dev,r,g,b));
- }
-
- /* Map a color code to r-g-b. */
- int
- win_map_color_rgb(gx_device *dev, gx_color_index color,
- gx_color_value prgb[3])
- { gx_color_value one;
- switch(wdev->BitsPerPixel) {
- case 24:
- one = (gx_color_value) (gx_max_color_value / 255);
- prgb[0] = ((color) & 255) * one;
- prgb[1] = ((color>>8) & 255) * one;
- prgb[2] = ((color>>16) & 255) * one;
- break;
- case 8:
- if (!dev->is_open)
- return -1;
- one = (gx_color_value) (gx_max_color_value / 255);
- prgb[0] = wdev->limgpalette->palPalEntry[(int)color].peRed * one;
- prgb[1] = wdev->limgpalette->palPalEntry[(int)color].peGreen * one;
- prgb[2] = wdev->limgpalette->palPalEntry[(int)color].peBlue * one;
- break;
- case 4:
- if (color == 8) /* VGA light gray */
- prgb[0] = prgb[1] = prgb[2] = (gx_max_color_value / 4 * 3);
- else
- pc_4bit_map_color_rgb(dev, color, prgb);
- break;
- default:
- prgb[0] = prgb[1] = prgb[2] =
- (int)color ? gx_max_color_value : 0;
- }
- return 0;
- }
-
- /* Get Win parameters */
- int
- win_get_params(gx_device *dev, gs_param_list *plist)
- { int code = gx_default_get_params(dev, plist);
- return code;
- }
-
- /* Put parameters. */
- private int
- win_put_alpha_param(gs_param_list *plist, gs_param_name param_name, int *pa,
- bool alpha_ok)
- { int code = param_read_int(plist, param_name, pa);
- switch ( code )
- {
- case 0:
- switch ( *pa )
- {
- case 1:
- return 0;
- case 2: case 4:
- if ( alpha_ok )
- return 0;
- default:
- code = gs_error_rangecheck;
- }
- default:
- param_signal_error(plist, param_name, code);
- case 1:
- ;
- }
- return code;
- }
-
- /* Set window parameters -- size and resolution. */
- /* We implement this ourselves so that we can do it without */
- /* closing and opening the device. */
- int
- win_put_params(gx_device *dev, gs_param_list *plist)
- { int ecode = 0, code;
- bool is_open = dev->is_open;
- int width = dev->width;
- int height = dev->height;
- int old_bpp = dev->color_info.depth;
- int bpp = old_bpp;
- byte *old_flags = wdev->mapped_color_flags;
- int atext = wdev->alpha_text, agraphics = wdev->alpha_graphics;
- bool alpha_ok;
-
- /* Handle extra parameters */
-
- switch ( code = param_read_int(plist, "BitsPerPixel", &bpp) )
- {
- case 0:
- if ( dev->is_open && bpp != old_bpp )
- ecode = gs_error_rangecheck;
- else
- { /* Don't release existing mapped_color_flags. */
- if ( bpp != 8 )
- wdev->mapped_color_flags = 0;
- code = win_set_bits_per_pixel(wdev, bpp);
- if ( code < 0 )
- ecode = code;
- else
- break;
- }
- goto bppe;
- default:
- ecode = code;
- bppe: param_signal_error(plist, "BitsPerPixel", ecode);
- case 1:
- break;
- }
-
- alpha_ok = wdev->color_info.depth >= 8;
- if ( (code = win_put_alpha_param(plist, "TextAlphaBits", &wdev->alpha_text, alpha_ok)) < 0 )
- ecode = code;
- if ( (code = win_put_alpha_param(plist, "GraphicsAlphaBits", &wdev->alpha_graphics, alpha_ok)) < 0 )
- ecode = code;
-
- if ( ecode >= 0 )
- { /* Prevent gx_default_put_params from closing the device. */
- dev->is_open = false;
- ecode = gx_default_put_params(dev, plist);
- dev->is_open = is_open;
- }
- if ( ecode < 0 )
- { /* If we allocated mapped_color_flags, release it. */
- if ( wdev->mapped_color_flags != 0 && old_flags == 0 )
- gs_free(wdev->mapped_color_flags, 4096, 1,
- "win_put_params");
- wdev->mapped_color_flags = old_flags;
- if ( bpp != old_bpp )
- win_set_bits_per_pixel(wdev, old_bpp);
- wdev->alpha_text = atext;
- wdev->alpha_graphics = agraphics;
- return ecode;
- }
- if ( wdev->mapped_color_flags == 0 && old_flags != 0 )
- { /* Release old mapped_color_flags. */
- gs_free(old_flags, 4096, 1, "win_put_params");
- }
-
- /* Hand off the change to the implementation. */
- if ( is_open && (bpp != old_bpp ||
- dev->width != width || dev->height != height)
- )
- { int ccode;
- (*wdev->free_bitmap)(wdev);
- ccode = (*wdev->alloc_bitmap)(wdev, (gx_device *)wdev);
- if ( ccode < 0 )
- { /* Bad news! Some of the other device parameters */
- /* may have changed. We don't handle this. */
- /* This is ****** WRONG ******. */
- dev->width = width;
- dev->height = height;
- win_set_bits_per_pixel(wdev, old_bpp);
- wdev->alpha_text = atext;
- wdev->alpha_graphics = agraphics;
- (*wdev->alloc_bitmap)(wdev, dev);
- return ccode;
- }
- }
-
- return 0;
- }
-
- /* Get the number of alpha bits. */
- int
- win_get_alpha_bits(gx_device *dev, graphics_object_type type)
- { return (type == go_text ? wdev->alpha_text : wdev->alpha_graphics);
- }
-
- /* ------ Internal routines ------ */
-
- #undef wdev
-
-
-
- /* out of memory error message box */
- int
- win_nomemory(void)
- {
- MessageBox((HWND)NULL,(LPSTR)"Not enough memory",(LPSTR) szAppName, MB_ICONSTOP);
- return gs_error_limitcheck;
- }
-
-
- LPLOGPALETTE
- win_makepalette(gx_device_win *wdev)
- { int i, val;
- LPLOGPALETTE logpalette;
- logpalette = (LPLOGPALETTE)gs_malloc(1, sizeof(LOGPALETTE) +
- (1<<(wdev->color_info.depth)) * sizeof(PALETTEENTRY),
- "win_makepalette");
- if (logpalette == (LPLOGPALETTE)NULL)
- return(0);
- logpalette->palVersion = 0x300;
- logpalette->palNumEntries = wdev->nColors;
- for (i=0; i<wdev->nColors; i++) {
- logpalette->palPalEntry[i].peFlags = 0;
- switch (wdev->nColors) {
- case 64:
- /* colors are rrggbb */
- logpalette->palPalEntry[i].peRed = ((i & 0x30)>>4)*85;
- logpalette->palPalEntry[i].peGreen = ((i & 0xC)>>2)*85;
- logpalette->palPalEntry[i].peBlue = (i & 3)*85;
- break;
- case 16:
- /* colors are irgb */
- val = (i & 8 ? 255 : 128);
- logpalette->palPalEntry[i].peRed = i & 4 ? val : 0;
- logpalette->palPalEntry[i].peGreen = i & 2 ? val : 0;
- logpalette->palPalEntry[i].peBlue = i & 1 ? val : 0;
- if (i == 8) { /* light gray */
- logpalette->palPalEntry[i].peRed =
- logpalette->palPalEntry[i].peGreen =
- logpalette->palPalEntry[i].peBlue = 192;
- }
- break;
- case 2:
- logpalette->palPalEntry[i].peRed =
- logpalette->palPalEntry[i].peGreen =
- logpalette->palPalEntry[i].peBlue = (i ? 255 : 0);
- break;
- }
- }
- return(logpalette);
- }
-
-
- private int
- win_set_bits_per_pixel(gx_device_win *wdev, int bpp)
- {
- static const gx_device_color_info win_24bit_color = dci_color(24,255,255);
- static const gx_device_color_info win_8bit_color = dci_color(8,31,4);
- static const gx_device_color_info win_ega_color = dci_pc_4bit;
- static const gx_device_color_info win_vga_color = dci_pc_4bit;
- static const gx_device_color_info win_mono_color = dci_black_and_white;
- HDC hdc;
- switch(bpp) {
- case 24:
- wdev->color_info = win_24bit_color;
- wdev->nColors = -1;
- break;
- case 8:
- /* use 64 static colors and 166 dynamic colors from 8 planes */
- wdev->color_info = win_8bit_color;
- wdev->nColors = 64;
- break;
- case 4:
- hdc = GetDC(NULL);
- if (GetDeviceCaps(hdc, VERTRES) <= 350)
- wdev->color_info = win_ega_color;
- else
- wdev->color_info = win_vga_color;
- ReleaseDC(NULL,hdc);
- wdev->nColors = 16;
- break;
- case 1:
- wdev->color_info = win_mono_color;
- wdev->nColors = 2;
- break;
- default:
- return (gs_error_rangecheck);
- }
- wdev->BitsPerPixel = bpp;
-
- /* If necessary, allocate and clear the mapped color flags. */
- if ( bpp == 8 )
- { if ( wdev->mapped_color_flags == 0 )
- { wdev->mapped_color_flags = gs_malloc(4096, 1, "win_set_bits_per_pixel");
- if ( wdev->mapped_color_flags == 0 )
- return_error(gs_error_VMerror);
- }
- memset(wdev->mapped_color_flags, 0, 4096);
- }
- else
- { gs_free(wdev->mapped_color_flags, 4096, 1, "win_set_bits_per_pixel");
- wdev->mapped_color_flags = 0;
- }
- return 0;
- }
-
-