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- /* Copyright (C) 1989, 1995, 1996, 1997 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: gdevwddb.c,v 1.2 2000/09/19 19:00:23 lpd Exp $ */
- /*
- * Microsoft Windows 3.n driver for Ghostscript,
- * using device-dependent bitmap.
- *
- * 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"
-
- /* Make sure we cast to the correct structure type. */
- typedef struct gx_device_win_ddb_s gx_device_win_ddb;
-
- #undef wdev
- #define wdev ((gx_device_win_ddb *)dev)
-
- /* Forward references */
- private void near win_addtool(P2(gx_device_win_ddb *, int));
- private void near win_maketools(P2(gx_device_win_ddb *, HDC));
- private void near win_destroytools(P1(gx_device_win_ddb *));
-
- /* Device procedures */
-
- /* See gxdevice.h for the definitions of the procedures. */
- private dev_proc_open_device(win_ddb_open);
- private dev_proc_close_device(win_ddb_close);
- private dev_proc_map_rgb_color(win_ddb_map_rgb_color);
- private dev_proc_fill_rectangle(win_ddb_fill_rectangle);
- private dev_proc_tile_rectangle(win_ddb_tile_rectangle);
- private dev_proc_copy_mono(win_ddb_copy_mono);
- private dev_proc_copy_color(win_ddb_copy_color);
-
- /* Windows-specific procedures */
- private win_proc_copy_to_clipboard(win_ddb_copy_to_clipboard);
- private win_proc_repaint(win_ddb_repaint);
- private win_proc_alloc_bitmap(win_ddb_alloc_bitmap);
- private win_proc_free_bitmap(win_ddb_free_bitmap);
-
- /* The device descriptor */
- struct gx_device_win_ddb_s {
- gx_device_common;
- gx_device_win_common;
-
- /* Handles */
-
- HBITMAP FAR hbitmap;
- HDC FAR hdcbit;
- HPEN hpen, *hpens;
- uint hpensize;
- HBRUSH hbrush, *hbrushs;
- uint hbrushsize;
- #define select_brush(color)\
- if (wdev->hbrush != wdev->hbrushs[color])\
- { wdev->hbrush = wdev->hbrushs[color];\
- SelectObject(wdev->hdcbit,wdev->hbrush);\
- }
- HPALETTE hpalette;
- LPLOGPALETTE lpalette;
-
- /* A staging bitmap for copy_mono. */
- /* We want one big enough to handle the standard 16x16 halftone; */
- /* this is also big enough for ordinary-size characters. */
-
- #define bmWidthBytes 4 /* must be even */
- #define bmWidthBits (bmWidthBytes * 8)
- #define bmHeight 32
- HBITMAP FAR hbmmono;
- HDC FAR hdcmono;
- gx_bitmap_id bm_id;
- };
- private const gx_device_procs win_ddb_procs =
- {
- win_ddb_open,
- NULL, /* get_initial_matrix */
- win_sync_output,
- win_output_page,
- win_ddb_close,
- win_ddb_map_rgb_color,
- win_map_color_rgb,
- win_ddb_fill_rectangle,
- win_ddb_tile_rectangle,
- win_ddb_copy_mono,
- win_ddb_copy_color,
- NULL, /* draw_line */
- NULL, /* get_bits */
- win_get_params,
- win_put_params,
- NULL, /* map_cmyk_color */
- win_get_xfont_procs
- };
- gx_device_win_ddb far_data gs_mswin_device =
- {
- std_device_std_body(gx_device_win_ddb, &win_ddb_procs, "mswin",
- INITIAL_WIDTH, INITIAL_HEIGHT, /* win_open() fills these in later */
- INITIAL_RESOLUTION, INITIAL_RESOLUTION /* win_open() fills these in later */
- ),
- {0}, /* std_procs */
- 0, /* BitsPerPixel - not used */
- 5000, /* UpdateInterval (in milliseconds) */
- "\0", /* GSVIEW_STR */
- 0, /* not a DLL device */
- 2, /* nColors */
- 0, /* mapped_color_flags */
- win_ddb_copy_to_clipboard,
- win_ddb_repaint,
- win_ddb_alloc_bitmap,
- win_ddb_free_bitmap
- };
-
- /* Open the win_ddb driver */
- private int
- win_ddb_open(gx_device * dev)
- {
- int code = win_open(dev);
- HDC hdc;
-
- if (code < 0)
- return code;
-
- if (wdev->BitsPerPixel > 8)
- return gs_error_limitcheck; /* don't support 24 bit/pixel */
-
- /* Create the backing bitmap. */
- code = win_ddb_alloc_bitmap((gx_device_win *) dev, dev);
- if (code < 0)
- return code;
-
- /* Create the bitmap and DC for copy_mono. */
- hdc = GetDC(wdev->hwndimg);
- wdev->hbmmono = CreateBitmap(bmWidthBits, bmHeight, 1, 1, NULL);
- wdev->hdcmono = CreateCompatibleDC(hdc);
- if (wdev->hbmmono == NULL || wdev->hdcmono == NULL) {
- win_ddb_free_bitmap((gx_device_win *) dev);
- ReleaseDC(wdev->hwndimg, hdc);
- return win_nomemory();
- }
- SetMapMode(wdev->hdcmono, GetMapMode(hdc));
- SelectObject(wdev->hdcmono, wdev->hbmmono);
- wdev->bm_id = gx_no_bitmap_id;
- ReleaseDC(wdev->hwndimg, hdc);
-
- /* create palette and tools for bitmap */
- if ((wdev->lpalette = win_makepalette((gx_device_win *) dev))
- == (LPLOGPALETTE) NULL)
- return win_nomemory();
- wdev->hpalette = CreatePalette(wdev->lpalette);
- (void)SelectPalette(wdev->hdcbit, wdev->hpalette, NULL);
- RealizePalette(wdev->hdcbit);
- win_maketools(wdev, wdev->hdcbit);
-
- wdev->hdctext = wdev->hdcbit; /* draw text here */
-
- return 0;
- }
-
- /* Close the win_ddb driver */
- private int
- win_ddb_close(gx_device * dev)
- {
- /* Free resources */
-
- win_destroytools(wdev);
- DeleteDC(wdev->hdcmono);
- win_ddb_free_bitmap((gx_device_win *) dev);
- DeleteObject(wdev->hpalette);
- DeleteObject(wdev->hbmmono);
- gs_free((char *)(wdev->lpalette), 1, sizeof(LOGPALETTE) +
- (1 << (wdev->color_info.depth)) * sizeof(PALETTEENTRY),
- "win_ddb_close");
-
- return win_close(dev);
- }
-
- /* Map a r-g-b color to the colors available under Windows */
- private gx_color_index
- win_ddb_map_rgb_color(gx_device * dev, gx_color_value r, gx_color_value g,
- gx_color_value b)
- {
- int i = wdev->nColors;
- gx_color_index color = win_map_rgb_color(dev, r, g, b);
- LPLOGPALETTE lipal = wdev->limgpalette;
- LPLOGPALETTE lpal = wdev->lpalette;
-
- if (color != i)
- return color;
-
- /* We just added a color to the window palette. */
- /* Add it to the bitmap palette as well. */
-
- DeleteObject(wdev->hpalette);
- lpal->palPalEntry[i].peFlags = NULL;
- lpal->palPalEntry[i].peRed = lipal->palPalEntry[i].peRed;
- lpal->palPalEntry[i].peGreen = lipal->palPalEntry[i].peGreen;
- lpal->palPalEntry[i].peBlue = lipal->palPalEntry[i].peBlue;
- lpal->palNumEntries = i + 1;
- wdev->hpalette = CreatePalette(lpal);
- (void)SelectPalette(wdev->hdcbit, wdev->hpalette, NULL);
- RealizePalette(wdev->hdcbit);
- win_addtool(wdev, i);
-
- return color;
- }
-
- /* Macro for filling a rectangle with a color. */
- /* Note that it starts with a declaration. */
- #define fill_rect(x, y, w, h, color)\
- RECT rect;\
- rect.left = x, rect.top = y;\
- rect.right = x + w, rect.bottom = y + h;\
- FillRect(wdev->hdcbit, &rect, wdev->hbrushs[(int)color])
-
-
- /* Fill a rectangle. */
- private int
- win_ddb_fill_rectangle(gx_device * dev, int x, int y, int w, int h,
- gx_color_index color)
- {
- fit_fill(dev, x, y, w, h);
- /* Use PatBlt for filling. Special-case black. */
- if (color == 0)
- PatBlt(wdev->hdcbit, x, y, w, h, rop_write_0s);
- else {
- select_brush((int)color);
- PatBlt(wdev->hdcbit, x, y, w, h, rop_write_pattern);
- }
- win_update((gx_device_win *) dev);
-
- return 0;
- }
-
- /* Tile a rectangle. If neither color is transparent, */
- /* pre-clear the rectangle to color0 and just tile with color1. */
- /* This is faster because of how win_copy_mono is implemented. */
- /* Note that this also does the right thing for colored tiles. */
- private int
- win_ddb_tile_rectangle(gx_device * dev, const gx_tile_bitmap * tile,
- int x, int y, int w, int h, gx_color_index czero, gx_color_index cone,
- int px, int py)
- {
- fit_fill(dev, x, y, w, h);
- if (czero != gx_no_color_index && cone != gx_no_color_index) {
- fill_rect(x, y, w, h, czero);
- czero = gx_no_color_index;
- }
- if (tile->raster == bmWidthBytes && tile->size.y <= bmHeight &&
- (px | py) == 0 && cone != gx_no_color_index
- ) { /* We can do this much more efficiently */
- /* by using the internal algorithms of copy_mono */
- /* and gx_default_tile_rectangle. */
- int width = tile->size.x;
- int height = tile->size.y;
- int rwidth = tile->rep_width;
- int irx = ((rwidth & (rwidth - 1)) == 0 ? /* power of 2 */
- x & (rwidth - 1) :
- x % rwidth);
- int ry = y % tile->rep_height;
- int icw = width - irx;
- int ch = height - ry;
- int ex = x + w, ey = y + h;
- int fex = ex - width, fey = ey - height;
- int cx, cy;
-
- select_brush((int)cone);
-
- if (tile->id != wdev->bm_id || tile->id == gx_no_bitmap_id) {
- wdev->bm_id = tile->id;
- SetBitmapBits(wdev->hbmmono,
- (DWORD) (bmWidthBytes * tile->size.y),
- (BYTE *) tile->data);
- }
- #define copy_tile(srcx, srcy, tx, ty, tw, th)\
- BitBlt(wdev->hdcbit, tx, ty, tw, th, wdev->hdcmono, srcx, srcy, rop_write_at_1s)
-
- if (ch > h)
- ch = h;
- for (cy = y;;) {
- if (w <= icw)
- copy_tile(irx, ry, x, cy, w, ch);
- else {
- copy_tile(irx, ry, x, cy, icw, ch);
- cx = x + icw;
- while (cx <= fex) {
- copy_tile(0, ry, cx, cy, width, ch);
- cx += width;
- }
- if (cx < ex) {
- copy_tile(0, ry, cx, cy, ex - cx, ch);
- }
- }
- if ((cy += ch) >= ey)
- break;
- ch = (cy > fey ? ey - cy : height);
- ry = 0;
- }
-
- win_update((gx_device_win *) dev);
- return 0;
- }
- return gx_default_tile_rectangle(dev, tile, x, y, w, h, czero, cone, px, py);
- }
-
-
- /* Copy a monochrome bitmap. The colors are given explicitly. */
- /* Color = gx_no_color_index means transparent (no effect on the image). */
- private int
- win_ddb_copy_mono(gx_device * dev,
- const byte * base, int sourcex, int raster, gx_bitmap_id id,
- int x, int y, int w, int h,
- gx_color_index zero, gx_color_index one)
- {
- int endx;
- const byte *ptr_line;
- int width_bytes, height;
- DWORD rop = rop_write_at_1s;
- int color;
- BYTE aBit[bmWidthBytes * bmHeight];
- BYTE *aptr = aBit;
-
- fit_copy(dev, base, sourcex, raster, id, x, y, w, h);
-
- if (sourcex & ~7) {
- base += sourcex >> 3;
- sourcex &= 7;
- }
- /* Break up large transfers into smaller ones. */
- while ((endx = sourcex + w) > bmWidthBits) {
- int lastx = (endx - 1) & -bmWidthBits;
- int subw = endx - lastx;
- int code = win_ddb_copy_mono(dev, base, lastx,
- raster, gx_no_bitmap_id,
- x + lastx - sourcex, y,
- subw, h, zero, one);
-
- if (code < 0)
- return code;
- w -= subw;
- }
- while (h > bmHeight) {
- int code;
-
- h -= bmHeight;
- code = win_ddb_copy_mono(dev, base + h * raster, sourcex,
- raster, gx_no_bitmap_id,
- x, y + h, w, bmHeight, zero, one);
- if (code < 0)
- return code;
- }
-
- width_bytes = (sourcex + w + 7) >> 3;
- ptr_line = base;
-
- if (zero == gx_no_color_index) {
- if (one == gx_no_color_index)
- return 0;
- color = (int)one;
- if (color == 0)
- rop = rop_write_0_at_1s;
- else
- select_brush(color);
- } else {
- if (one == gx_no_color_index) {
- color = (int)zero;
- rop = rop_write_at_0s;
- } else { /* Pre-clear the rectangle to zero */
- fill_rect(x, y, w, h, zero);
- color = (int)one;
- }
- select_brush(color);
- }
-
- if (id != wdev->bm_id || id == gx_no_bitmap_id) {
- wdev->bm_id = id;
- if (raster == bmWidthBytes) { /* We can do the whole thing in a single transfer! */
- SetBitmapBits(wdev->hbmmono,
- (DWORD) (bmWidthBytes * h),
- (BYTE *) base);
- } else {
- for (height = h; height--;
- ptr_line += raster, aptr += bmWidthBytes
- ) { /* Pack the bits into the bitmap. */
- switch (width_bytes) {
- default:
- memcpy(aptr, ptr_line, width_bytes);
- break;
- case 4:
- aptr[3] = ptr_line[3];
- case 3:
- aptr[2] = ptr_line[2];
- case 2:
- aptr[1] = ptr_line[1];
- case 1:
- aptr[0] = ptr_line[0];
- }
- }
- SetBitmapBits(wdev->hbmmono,
- (DWORD) (bmWidthBytes * h),
- &aBit[0]);
- }
- }
- BitBlt(wdev->hdcbit, x, y, w, h, wdev->hdcmono, sourcex, 0, rop);
- win_update((gx_device_win *) dev);
- return 0;
- }
-
-
- /* Copy a color pixel map. This is just like a bitmap, except that */
- /* each pixel takes 8 or 4 bits instead of 1 when device driver has color. */
- private int
- win_ddb_copy_color(gx_device * dev,
- const byte * base, int sourcex, int raster, gx_bitmap_id id,
- int x, int y, int w, int h)
- {
- fit_copy(dev, base, sourcex, raster, id, x, y, w, h);
-
- if (gx_device_has_color(dev)) {
- switch (dev->color_info.depth) {
- case 8:
- {
- int xi, yi;
- int skip = raster - w;
- const byte *sptr = base + sourcex;
-
- if (w <= 0)
- return 0;
- if (x < 0 || x + w > dev->width)
- return_error(gs_error_rangecheck);
- for (yi = y; yi - y < h; yi++) {
- for (xi = x; xi - x < w; xi++) {
- int color = *sptr++;
-
- SetPixel(wdev->hdcbit, xi, yi, PALETTEINDEX(color));
- }
- sptr += skip;
- }
- }
- break;
- case 4:
- { /* color device, four bits per pixel */
- const byte *line = base + (sourcex >> 1);
- int dest_y = y, end_x = x + w;
-
- if (w <= 0)
- return 0;
- while (h--) { /* for each line */
- const byte *source = line;
- register int dest_x = x;
-
- if (sourcex & 1) { /* odd nibble first */
- int color = *source++ & 0xf;
-
- SetPixel(wdev->hdcbit, dest_x, dest_y, PALETTEINDEX(color));
- dest_x++;
- }
- /* Now do full bytes */
- while (dest_x < end_x) {
- int color = *source >> 4;
-
- SetPixel(wdev->hdcbit, dest_x, dest_y, PALETTEINDEX(color));
- dest_x++;
- if (dest_x < end_x) {
- color = *source++ & 0xf;
- SetPixel(wdev->hdcbit, dest_x, dest_y, PALETTEINDEX(color));
- dest_x++;
- }
- }
- dest_y++;
- line += raster;
- }
- }
- break;
- default:
- return (-1); /* panic */
- }
- } else
- /* monochrome device: one bit per pixel */
- { /* bitmap is the same as win_copy_mono: one bit per pixel */
- win_ddb_copy_mono(dev, base, sourcex, raster, id, x, y, w, h,
- (gx_color_index) 0,
- (gx_color_index) (dev->color_info.depth == 8 ? 63 : dev->color_info.max_gray));
- }
- win_update((gx_device_win *) dev);
- return 0;
- }
-
- /* ------ Windows-specific device procedures ------ */
-
-
- /* Copy the bitmap to the clipboard. */
- private void
- win_ddb_copy_to_clipboard(gx_device_win * dev)
- { /* make somewhere to put it and copy */
- HDC hdcbit = wdev->hdcbit;
- HBITMAP bitmap = CreateCompatibleBitmap(hdcbit, dev->width,
- dev->height);
-
- if (bitmap) {
- /* there is enough memory and the bitmaps OK */
- HDC mem = CreateCompatibleDC(hdcbit);
-
- SelectObject(mem, bitmap);
- BitBlt(mem, 0, 0, dev->width, dev->height,
- hdcbit, 0, 0, SRCCOPY);
- DeleteDC(mem);
- /* copy it to the clipboard */
- OpenClipboard(wdev->hwndimg);
- EmptyClipboard();
- SetClipboardData(CF_BITMAP, bitmap);
- SetClipboardData(CF_PALETTE, CreatePalette(wdev->limgpalette));
- CloseClipboard();
- }
- }
-
-
- /* Repaint a section of the window. */
- private void
- win_ddb_repaint(gx_device_win * dev, HDC hdc, int dx, int dy, int wx, int wy,
- int sx, int sy)
- {
- BitBlt(hdc, dx, dy, wx, wy, wdev->hdcbit, sx, sy, SRCCOPY);
- }
-
-
- /* Allocate the backing bitmap. */
- private int
- win_ddb_alloc_bitmap(gx_device_win * dev, gx_device * param_dev)
- {
- HDC hdc;
- int i;
-
- hdc = GetDC(wdev->hwndimg);
- for (i = 0;; i++) {
- wdev->hbitmap = CreateCompatibleBitmap(hdc,
- param_dev->width, param_dev->height);
- if (wdev->hbitmap != (HBITMAP) NULL)
- break;
- if (i >= 4) {
- ReleaseDC(wdev->hwndimg, hdc);
- return win_nomemory();
- }
- fprintf(stderr, "\nNot enough memory for bitmap. Halving resolution... ");
- param_dev->x_pixels_per_inch /= 2;
- param_dev->y_pixels_per_inch /= 2;
- param_dev->width /= 2;
- param_dev->height /= 2;
- }
-
- wdev->hdcbit = CreateCompatibleDC(hdc); /* create Device Context for drawing */
- SelectObject(wdev->hdcbit, wdev->hbitmap);
- ReleaseDC(wdev->hwndimg, hdc);
- return 0;
- }
-
-
- /* Free the backing bitmap. */
- private void
- win_ddb_free_bitmap(gx_device_win * dev)
- {
- DeleteDC(wdev->hdcbit); /* must do this first */
- DeleteObject(wdev->hbitmap);
- }
-
-
- /* ------ Internal routines ------ */
-
- #undef wdev
-
-
- private void near
- win_addtool(gx_device_win_ddb * wdev, int i)
- {
- wdev->hpens[i] = CreatePen(PS_SOLID, 1, PALETTEINDEX(i));
- wdev->hbrushs[i] = CreateSolidBrush(PALETTEINDEX(i));
- }
-
-
- private void near
- win_maketools(gx_device_win_ddb * wdev, HDC hdc)
- {
- int i;
-
- wdev->hpensize = (1 << (wdev->color_info.depth)) * sizeof(HPEN);
- wdev->hpens = (HPEN *) gs_malloc(1, wdev->hpensize,
- "win_maketools(pens)");
- wdev->hbrushsize = (1 << (wdev->color_info.depth)) * sizeof(HBRUSH);
- wdev->hbrushs = (HBRUSH *) gs_malloc(1, wdev->hbrushsize,
- "win_maketools(brushes)");
- if (wdev->hpens && wdev->hbrushs) {
- for (i = 0; i < wdev->nColors; i++)
- win_addtool(wdev, i);
-
- wdev->hpen = wdev->hpens[0];
- SelectObject(hdc, wdev->hpen);
-
- wdev->hbrush = wdev->hbrushs[0];
- SelectObject(hdc, wdev->hbrush);
- }
- }
-
-
- private void near
- win_destroytools(gx_device_win_ddb * wdev)
- {
- int i;
-
- for (i = 0; i < wdev->nColors; i++) {
- DeleteObject(wdev->hpens[i]);
- DeleteObject(wdev->hbrushs[i]);
- }
- gs_free((char *)wdev->hbrushs, 1, wdev->hbrushsize,
- "win_destroytools(brushes)");
- gs_free((char *)wdev->hpens, 1, wdev->hpensize,
- "win_destroytools(pens)");
- }
-