1 /* GDK - The GIMP Drawing Kit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
31 #include "gdkprivate.h"
34 gdk_gc_new (GdkWindow *window)
36 return gdk_gc_new_with_values (window, NULL, 0);
40 gdk_gc_new_with_values (GdkWindow *window,
42 GdkGCValuesMask values_mask)
44 GdkWindowPrivate *window_private;
46 GdkGCPrivate *private;
47 static GdkColor black;
48 static GdkColor white;
49 static gboolean beenhere = FALSE;
53 gdk_color_black (gdk_colormap_get_system (), &black);
54 gdk_color_white (gdk_colormap_get_system (), &white);
58 g_return_val_if_fail (window != NULL, NULL);
60 window_private = (GdkWindowPrivate*) window;
61 if (window_private->destroyed)
64 private = g_new (GdkGCPrivate, 1);
65 gc = (GdkGC*) private;
67 private->ref_count = 1;
68 private->rop2 = R2_COPYPEN;
69 private->fill_style = GDK_SOLID;
70 private->values_mask = values_mask;
71 private->values_mask |= GDK_GC_FUNCTION | GDK_GC_FILL;
73 GDK_NOTE (MISC, g_print ("gdk_gc_new: {"));
75 if (values_mask & GDK_GC_FOREGROUND)
77 private->foreground = values->foreground;
80 private->foreground = black;
82 if (values_mask & GDK_GC_BACKGROUND)
84 private->background = values->background;
87 private->background = white;
89 if ((values_mask & GDK_GC_FONT) && (values->font->type == GDK_FONT_FONT))
91 private->font = (HFONT) ((GdkFontPrivate*) values->font)->xfont;
92 GDK_NOTE (MISC, g_print (" font=%#x", private->font));
95 if (values_mask & GDK_GC_FUNCTION)
97 switch (values->function)
100 private->rop2 = R2_COPYPEN; break;
102 private->rop2 = R2_NOT; break;
104 private->rop2 = R2_XORPEN; break;
106 private->rop2 = R2_BLACK; break;
108 private->rop2 = R2_MASKPEN; break;
109 case GDK_AND_REVERSE:
110 private->rop2 = R2_MASKPENNOT; break;
112 private->rop2 = R2_MASKNOTPEN; break;
114 private->rop2 = R2_NOP; break;
116 private->rop2 = R2_MERGEPEN; break;
118 private->rop2 = R2_NOTXORPEN; break;
120 private->rop2 = R2_MERGEPENNOT; break;
121 case GDK_COPY_INVERT:
122 private->rop2 = R2_NOTCOPYPEN; break;
124 private->rop2 = R2_MERGENOTPEN; break;
126 private->rop2 = R2_NOTMASKPEN; break;
128 private->rop2 = R2_WHITE; break;
130 GDK_NOTE (MISC, g_print (" function=%d", private->rop2));
133 if (values_mask & GDK_GC_FILL)
135 private->fill_style = values->fill;
136 GDK_NOTE (MISC, g_print (" fill=%d", private->fill_style));
139 if (values_mask & GDK_GC_TILE)
141 private->tile = values->tile;
142 gdk_pixmap_ref (private->tile);
143 GDK_NOTE (MISC, g_print (" tile=%#x", ((GdkPixmapPrivate *)private->tile)->xwindow));
146 private->tile = NULL;
148 if (values_mask & GDK_GC_STIPPLE)
150 private->stipple = values->stipple;
151 gdk_pixmap_ref (private->stipple);
152 GDK_NOTE (MISC, g_print (" stipple=%#x", ((GdkPixmapPrivate *)private->stipple)->xwindow));
155 private->stipple = NULL;
157 if (values_mask & GDK_GC_CLIP_MASK)
159 private->clip_region =
160 BitmapToRegion (((GdkPixmapPrivate *)values->clip_mask)->xwindow);
161 GDK_NOTE (MISC, g_print (" clip=%#x", private->clip_region));
164 private->clip_region = NULL;
166 if (values_mask & GDK_GC_SUBWINDOW)
168 private->subwindow_mode = values->subwindow_mode;
169 GDK_NOTE (MISC, g_print (" subw=%d", private->subwindow_mode));
172 if (values_mask & GDK_GC_TS_X_ORIGIN)
174 private->ts_x_origin = values->ts_x_origin;
175 GDK_NOTE (MISC, g_print (" ts_x=%d", private->ts_x_origin));
178 if (values_mask & GDK_GC_TS_Y_ORIGIN)
180 private->ts_y_origin = values->ts_y_origin;
181 GDK_NOTE (MISC, g_print (" ts_y=%d", private->ts_y_origin));
184 if (values_mask & GDK_GC_CLIP_X_ORIGIN)
186 private->clip_x_origin = values->clip_x_origin;
187 GDK_NOTE (MISC, g_print (" clip_x=%d", private->clip_x_origin));
190 if (values_mask & GDK_GC_CLIP_Y_ORIGIN)
192 private->clip_y_origin = values->clip_y_origin;
193 GDK_NOTE (MISC, g_print (" clip_y=%d", private->clip_y_origin));
196 if (values_mask & GDK_GC_EXPOSURES)
198 private->graphics_exposures = values->graphics_exposures;
199 GDK_NOTE (MISC, g_print (" exp=%d", private->graphics_exposures));
202 private->pen_style = PS_GEOMETRIC;
203 private->pen_width = 1;
205 if (values_mask & (GDK_GC_LINE_WIDTH | GDK_GC_LINE_STYLE))
207 if (values_mask & GDK_GC_LINE_WIDTH)
209 private->pen_width = values->line_width;
210 GDK_NOTE (MISC, g_print (" pw=%d", private->pen_width));
212 if (values_mask & GDK_GC_LINE_STYLE)
214 switch (values->line_style)
217 private->pen_style |= PS_SOLID; break;
218 case GDK_LINE_ON_OFF_DASH:
219 case GDK_LINE_DOUBLE_DASH: /* ??? */
220 private->pen_style |= PS_DASH; break;
222 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
226 if (values_mask & GDK_GC_CAP_STYLE)
228 switch (values->cap_style)
230 case GDK_CAP_NOT_LAST: /* ??? */
232 private->pen_style |= PS_ENDCAP_FLAT; break;
234 private->pen_style |= PS_ENDCAP_ROUND; break;
235 case GDK_CAP_PROJECTING:
236 private->pen_style |= PS_ENDCAP_SQUARE; break;
238 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
241 if (values_mask & GDK_GC_JOIN_STYLE)
243 switch (values->join_style)
246 private->pen_style |= PS_JOIN_MITER;
249 private->pen_style |= PS_JOIN_ROUND;
252 private->pen_style |= PS_JOIN_BEVEL;
255 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
258 private->hwnd = NULL;
261 GDK_NOTE (MISC, g_print ("} = %p\n", private));
267 gdk_gc_destroy (GdkGC *gc)
273 gdk_gc_ref (GdkGC *gc)
275 GdkGCPrivate *private = (GdkGCPrivate*) gc;
277 g_return_val_if_fail (gc != NULL, NULL);
278 private->ref_count += 1;
284 gdk_gc_unref (GdkGC *gc)
286 GdkGCPrivate *private = (GdkGCPrivate*) gc;
288 g_return_if_fail (gc != NULL);
290 if (private->ref_count > 1)
291 private->ref_count -= 1;
294 if (private->values_mask & GDK_GC_FONT)
297 if (!DeleteObject (private->font))
298 g_warning ("gdk_gc_unref: DeleteObject #3 failed");
302 if (private->values_mask & GDK_GC_TILE)
304 gdk_pixmap_unref (private->tile);
307 if (private->values_mask & GDK_GC_STIPPLE)
309 gdk_pixmap_unref (private->stipple);
312 if (private->values_mask & GDK_GC_CLIP_MASK)
314 DeleteObject (private->clip_region);
316 memset (gc, 0, sizeof (GdkGCPrivate));
322 gdk_gc_get_values (GdkGC *gc,
325 GdkGCPrivate *private;
327 g_return_if_fail (gc != NULL);
328 g_return_if_fail (values != NULL);
330 private = (GdkGCPrivate*) gc;
332 values->foreground = private->foreground;
333 values->background = private->background;
334 values->font = gdk_font_lookup (private->font);
336 switch (private->rop2)
339 values->function = GDK_COPY; break;
341 values->function = GDK_INVERT; break;
343 values->function = GDK_XOR; break;
345 values->function = GDK_CLEAR; break;
347 values->function = GDK_AND; break;
349 values->function = GDK_AND_REVERSE; break;
351 values->function = GDK_AND_INVERT; break;
353 values->function = GDK_NOOP; break;
355 values->function = GDK_OR; break;
357 values->function = GDK_EQUIV; break;
359 values->function = GDK_OR_REVERSE; break;
361 values->function = GDK_COPY_INVERT; break;
363 values->function = GDK_OR_INVERT; break;
365 values->function = GDK_NAND; break;
367 values->function = GDK_SET; break;
370 values->fill = private->fill_style;
372 values->tile = private->tile;
373 values->stipple = private->stipple;
374 if (private->clip_region != NULL)
382 GetRgnBox (private->clip_region, &rect);
384 gdk_pixmap_new (NULL, rect.right - rect.left, rect.bottom - rect.top,
386 hbr = GetStockObject (WHITE_BRUSH);
387 if ((hdc = CreateCompatibleDC (NULL)) == NULL)
388 g_warning ("gdk_gc_get_values: CreateCompatibleDC failed");
390 SelectObject (hdc, ((GdkPixmapPrivate *) pixmap)->xwindow)) == NULL)
391 g_warning ("gdk_gc_get_values: SelectObject #1 failed");
392 hbr = GetStockObject (BLACK_BRUSH);
393 if (!FillRect (hdc, &rect, hbr))
394 g_warning ("gdk_gc_get_values: FillRect failed");
395 hbr = GetStockObject (WHITE_BRUSH);
396 if (!FillRgn (hdc, private->clip_region, hbr))
397 g_warning ("gdk_gc_get_values: FillRgn failed");
398 if (SelectObject (hdc, oldbitmap) == NULL)
399 g_warning ("gdk_gc_get_values: SelectObject #2 failed");
401 values->clip_mask = pixmap;
404 values->clip_mask = NULL;
405 values->subwindow_mode = private->subwindow_mode;
406 values->ts_x_origin = private->ts_x_origin;
407 values->ts_y_origin = private->ts_y_origin;
408 values->clip_x_origin = private->clip_x_origin;
409 values->clip_y_origin = private->clip_y_origin;
410 values->graphics_exposures = private->graphics_exposures;
411 values->line_width = private->pen_width;
413 if (private->pen_style & PS_SOLID)
414 values->line_style = GDK_LINE_SOLID;
415 else if (private->pen_style & PS_DASH)
416 values->line_style = GDK_LINE_ON_OFF_DASH;
418 values->line_style = GDK_LINE_SOLID;
420 /* PS_ENDCAP_ROUND is zero */
421 if (private->pen_style & PS_ENDCAP_FLAT)
422 values->cap_style = GDK_CAP_BUTT;
423 else if (private->pen_style & PS_ENDCAP_SQUARE)
424 values->cap_style = GDK_CAP_PROJECTING;
426 values->cap_style = GDK_CAP_ROUND;
428 /* PS_JOIN_ROUND is zero */
429 if (private->pen_style & PS_JOIN_MITER)
430 values->join_style = GDK_JOIN_MITER;
431 else if (private->pen_style & PS_JOIN_BEVEL)
432 values->join_style = GDK_JOIN_BEVEL;
434 values->join_style = GDK_JOIN_ROUND;
438 gdk_gc_set_foreground (GdkGC *gc,
441 GdkGCPrivate *private;
443 g_return_if_fail (gc != NULL);
444 g_return_if_fail (color != NULL);
446 private = (GdkGCPrivate*) gc;
448 GDK_NOTE (MISC, g_print ("gdk_gc_set_foreground: (%d) %s\n",
449 private, gdk_color_to_string (color)));
450 private->foreground = *color;
451 private->values_mask |= GDK_GC_FOREGROUND;
456 gdk_gc_set_background (GdkGC *gc,
459 GdkGCPrivate *private;
461 g_return_if_fail (gc != NULL);
462 g_return_if_fail (color != NULL);
464 private = (GdkGCPrivate*) gc;
466 GDK_NOTE (MISC, g_print ("gdk_gc_set_backround: (%d) %s\n",
467 private, gdk_color_to_string(color)));
468 private->background = *color;
469 private->values_mask |= GDK_GC_BACKGROUND;
473 gdk_gc_set_font (GdkGC *gc,
476 GdkGCPrivate *gc_private;
477 GdkFontPrivate *font_private;
479 g_return_if_fail (gc != NULL);
480 g_return_if_fail (font != NULL);
482 if (font->type == GDK_FONT_FONT)
484 gc_private = (GdkGCPrivate*) gc;
485 font_private = (GdkFontPrivate*) font;
487 GDK_NOTE (MISC, g_print ("gdk_gc_set_font: (%d) %#x\n",
488 gc_private, font_private->xfont));
490 gc_private->font = font_private->xfont;
491 gc_private->values_mask |= GDK_GC_FONT;
496 gdk_gc_set_function (GdkGC *gc,
497 GdkFunction function)
499 GdkGCPrivate *private;
501 g_return_if_fail (gc != NULL);
503 private = (GdkGCPrivate*) gc;
505 GDK_NOTE (MISC, g_print ("gdk_gc_set_function: (%d) %d\n", private, function));
510 private->rop2 = R2_COPYPEN; break;
512 private->rop2 = R2_NOT; break;
514 private->rop2 = R2_XORPEN; break;
516 private->rop2 = R2_BLACK; break;
518 private->rop2 = R2_MASKPEN; break;
519 case GDK_AND_REVERSE:
520 private->rop2 = R2_MASKPENNOT; break;
522 private->rop2 = R2_MASKNOTPEN; break;
524 private->rop2 = R2_NOP; break;
526 private->rop2 = R2_MERGEPEN; break;
528 private->rop2 = R2_NOTXORPEN; break;
530 private->rop2 = R2_MERGEPENNOT; break;
531 case GDK_COPY_INVERT:
532 private->rop2 = R2_NOTCOPYPEN; break;
534 private->rop2 = R2_MERGENOTPEN; break;
536 private->rop2 = R2_NOTMASKPEN; break;
538 private->rop2 = R2_WHITE; break;
540 private->values_mask |= GDK_GC_FUNCTION;
544 gdk_gc_set_fill (GdkGC *gc,
547 GdkGCPrivate *private;
549 g_return_if_fail (gc != NULL);
551 private = (GdkGCPrivate*) gc;
553 private->fill_style = fill;
554 private->values_mask |= GDK_GC_FILL;
558 gdk_gc_set_tile (GdkGC *gc,
561 GdkGCPrivate *private;
562 GdkPixmapPrivate *pixmap_private;
565 g_return_if_fail (gc != NULL);
567 private = (GdkGCPrivate*) gc;
573 pixmap_private = (GdkPixmapPrivate*) tile;
574 pixmap = pixmap_private->xwindow;
577 if (private->tile != NULL)
578 gdk_pixmap_unref (private->tile);
579 private->tile = tile;
581 gdk_pixmap_ref (tile);
583 private->values_mask |= GDK_GC_TILE;
585 private->values_mask &= ~GDK_GC_TILE;
589 gdk_gc_set_stipple (GdkGC *gc,
592 GdkGCPrivate *private;
593 GdkPixmapPrivate *pixmap_private;
596 g_return_if_fail (gc != NULL);
598 private = (GdkGCPrivate*) gc;
604 pixmap_private = (GdkPixmapPrivate*) stipple;
605 pixmap = pixmap_private->xwindow;
608 if (private->stipple != NULL)
609 gdk_pixmap_unref (private->stipple);
610 private->stipple = stipple;
612 gdk_pixmap_ref (stipple);
614 private->values_mask |= GDK_GC_STIPPLE;
616 private->values_mask &= ~GDK_GC_STIPPLE;
620 gdk_gc_set_ts_origin (GdkGC *gc,
624 GdkGCPrivate *private;
626 g_return_if_fail (gc != NULL);
628 private = (GdkGCPrivate*) gc;
630 private->ts_x_origin = x;
631 private->ts_y_origin = y;
632 private->values_mask |= GDK_GC_TS_X_ORIGIN |GDK_GC_TS_Y_ORIGIN;
636 gdk_gc_set_clip_origin (GdkGC *gc,
640 GdkGCPrivate *private;
642 g_return_if_fail (gc != NULL);
644 private = (GdkGCPrivate*) gc;
646 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_origin: (%d) +%d+%d\n",
649 private->clip_x_origin = x;
650 private->clip_y_origin = y;
651 private->values_mask |= GDK_GC_CLIP_X_ORIGIN |GDK_GC_CLIP_Y_ORIGIN;
655 gdk_gc_set_clip_mask (GdkGC *gc,
658 GdkGCPrivate *private;
661 g_return_if_fail (gc != NULL);
665 GdkWindowPrivate *mask_private;
667 mask_private = (GdkWindowPrivate*) mask;
668 if (mask_private->destroyed)
670 xmask = mask_private->xwindow;
675 private = (GdkGCPrivate*) gc;
677 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_mask: (%d) %#x\n", private, xmask));
679 if (private->clip_region != NULL)
680 if (!DeleteObject (private->clip_region))
681 g_warning ("gdk_gc_set_clip_mask: DeleteObject failed");
684 private->clip_region = BitmapToRegion (xmask);
687 GetRgnBox (private->clip_region, &rect);
688 GDK_NOTE (MISC, g_print ("...box = %dx%d@+%d+%d\n",
689 rect.right - rect.left, rect.bottom - rect.top,
690 rect.left, rect.top));
693 /* Test code that sets clip region to whole of mask */
696 GetObject (xmask, sizeof (bm), &bm);
697 private->clip_region = CreateRectRgn (0, 0, bm.bmWidth, bm.bmHeight);
700 private->values_mask |= GDK_GC_CLIP_MASK;
704 private->values_mask &= ~GDK_GC_CLIP_MASK;
705 private->clip_region = NULL;
710 gdk_gc_set_clip_rectangle (GdkGC *gc,
711 GdkRectangle *rectangle)
713 GdkGCPrivate *private;
715 g_return_if_fail (gc != NULL);
717 private = (GdkGCPrivate*) gc;
719 if (private->clip_region != NULL)
720 if (!DeleteObject (private->clip_region))
721 g_warning ("gdk_gc_set_clip_rectangle: DeleteObject failed");
725 g_print ("gdk_gc_set_clip_rectangle: (%d) %dx%d@+%d+%d\n",
727 rectangle->width, rectangle->height,
728 rectangle->x, rectangle->y));
729 if ((private->clip_region =
730 CreateRectRgn (rectangle->x, rectangle->y,
731 rectangle->x + rectangle->width,
732 rectangle->y + rectangle->height)) == NULL)
733 g_warning ("gdk_gc_set_clip_rectangle: CreateRectRgn failed");
735 private->values_mask |= GDK_GC_CLIP_MASK;
739 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_rectangle: (%d) None\n",
741 private->clip_region = NULL;
742 private->values_mask &= ~GDK_GC_CLIP_MASK;
744 private->values_mask &= ~(GDK_GC_CLIP_X_ORIGIN |GDK_GC_CLIP_Y_ORIGIN);
748 gdk_gc_set_clip_region (GdkGC *gc,
751 GdkGCPrivate *private;
753 g_return_if_fail (gc != NULL);
755 private = (GdkGCPrivate*) gc;
757 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_region: (%d) %s\n",
758 private, (region != NULL ? "xxx" : "None")));
760 if (private->clip_region != NULL)
761 if (!DeleteObject (private->clip_region))
762 g_warning ("gdk_gc_set_clip_region: DeleteObject failed");
765 GdkRegionPrivate *region_private;
767 region_private = (GdkRegionPrivate*) region;
768 private->clip_region = CreateRectRgn (1, 1, 0, 0);
769 CombineRgn (private->clip_region, region_private->xregion, NULL, RGN_COPY);
770 private->values_mask |= GDK_GC_CLIP_MASK;
774 private->clip_region = NULL;
775 private->values_mask &= ~GDK_GC_CLIP_MASK;
780 gdk_gc_set_subwindow (GdkGC *gc,
781 GdkSubwindowMode mode)
783 GdkGCPrivate *private;
785 g_return_if_fail (gc != NULL);
787 private = (GdkGCPrivate*) gc;
789 private->subwindow_mode = mode;
790 private->values_mask |= GDK_GC_SUBWINDOW;
794 gdk_gc_set_exposures (GdkGC *gc,
797 GdkGCPrivate *private;
799 g_return_if_fail (gc != NULL);
801 private = (GdkGCPrivate*) gc;
803 private->graphics_exposures = exposures;
804 private->values_mask |= GDK_GC_EXPOSURES;;
808 gdk_gc_set_line_attributes (GdkGC *gc,
810 GdkLineStyle line_style,
811 GdkCapStyle cap_style,
812 GdkJoinStyle join_style)
814 GdkGCPrivate *private;
819 g_return_if_fail (gc != NULL);
821 private = (GdkGCPrivate*) gc;
824 g_print ("gdk_gc_set_line_attributes: (%d) %d %s %s %s\n",
826 (line_style == GDK_LINE_SOLID ? "SOLID" :
827 (line_style == GDK_LINE_ON_OFF_DASH ? "ON_OFF_DASH" :
828 (line_style == GDK_LINE_DOUBLE_DASH ? "DOUBLE_DASH" :
830 (cap_style == GDK_CAP_BUTT ? "BUTT" :
831 (cap_style == GDK_CAP_ROUND ? "ROUND" :
832 (cap_style == GDK_CAP_PROJECTING ? "PROJECTING" :
834 (join_style == GDK_JOIN_MITER ? "MITER" :
835 (join_style == GDK_JOIN_ROUND ? "ROUND" :
836 (join_style == GDK_JOIN_BEVEL ? "BEVEL" :
839 private->pen_width = line_width;
841 /* Mask old style bits away */
842 private->pen_style &= ~(PS_STYLE_MASK|PS_ENDCAP_MASK|PS_JOIN_MASK);
848 private->pen_style |= PS_SOLID; break;
849 case GDK_LINE_ON_OFF_DASH:
850 case GDK_LINE_DOUBLE_DASH: /* ??? */
851 private->pen_style |= PS_DASH; break;
856 case GDK_CAP_NOT_LAST:
860 private->pen_style |= PS_ENDCAP_FLAT; break;
862 private->pen_style |= PS_ENDCAP_ROUND; break;
863 case GDK_CAP_PROJECTING:
864 private->pen_style |= PS_ENDCAP_SQUARE; break;
870 private->pen_style |= PS_JOIN_MITER;
873 private->pen_style |= PS_JOIN_ROUND;
876 private->pen_style |= PS_JOIN_BEVEL;
882 gdk_gc_set_dashes (GdkGC *gc,
887 GdkGCPrivate *private;
889 g_return_if_fail (gc != NULL);
890 g_return_if_fail (dash_list != NULL);
894 private = (GdkGCPrivate *) gc;
896 private->pen_style &= ~(PS_STYLE_MASK);
897 private->pen_style |= PS_DASH;
901 gdk_gc_copy (GdkGC *dst_gc, GdkGC *src_gc)
903 GdkGCPrivate *dst_private, *src_private;
905 src_private = (GdkGCPrivate *) src_gc;
906 dst_private = (GdkGCPrivate *) dst_gc;
908 *dst_private = *src_private;
912 gdk_gc_predraw (GdkWindowPrivate *window_private,
913 GdkGCPrivate *gc_private)
915 GdkColormapPrivate *colormap_private =
916 (GdkColormapPrivate *) window_private->colormap;
923 g_assert (gc_private->xgc == NULL);
925 if (window_private->window_type == GDK_WINDOW_PIXMAP)
927 if ((gc_private->xgc = CreateCompatibleDC (NULL)) == NULL)
928 g_warning ("gdk_gc_predraw: CreateCompatibleDC failed");
930 if ((gc_private->saved_dc = SaveDC (gc_private->xgc)) == 0)
931 g_warning ("gdk_gc_predraw: SaveDC #1 failed");
933 if (SelectObject (gc_private->xgc, window_private->xwindow) == NULL)
934 g_warning ("gdk_gc_predraw: SelectObject #1 failed");
938 if ((gc_private->xgc = GetDC (window_private->xwindow)) == NULL)
939 g_warning ("gdk_gc_predraw: GetDC failed");
941 if ((gc_private->saved_dc = SaveDC (gc_private->xgc)) == 0)
942 g_warning ("gdk_gc_predraw: SaveDC #2 failed");
945 gc_private->hwnd = window_private->xwindow;
947 if (colormap_private == NULL)
949 /* A 1 bit deep bitmap */
954 PALETTEENTRY palPalEntry[2];
956 static HPALETTE hpal = NULL;
960 /* Create a b&w palette */
961 logpal.palVersion = 0x300;
962 logpal.palNumEntries = 2;
963 logpal.palPalEntry[0].peRed =
964 logpal.palPalEntry[0].peGreen =
965 logpal.palPalEntry[0].peBlue = 0x00;
966 logpal.palPalEntry[0].peFlags = 0x00;
967 logpal.palPalEntry[1].peRed =
968 logpal.palPalEntry[1].peGreen =
969 logpal.palPalEntry[1].peBlue = 0xFF;
970 logpal.palPalEntry[1].peFlags = 0x00;
971 if ((hpal = CreatePalette ((LOGPALETTE *) &logpal)) == NULL)
972 g_warning ("gdk_gc_predraw: CreatePalette failed");
974 SelectPalette (gc_private->xgc, hpal, FALSE);
975 RealizePalette (gc_private->xgc);
976 fg = PALETTEINDEX (gc_private->foreground.pixel);
978 else if (colormap_private != NULL
979 && colormap_private->xcolormap->rc_palette)
982 if (SelectPalette (gc_private->xgc,
983 colormap_private->xcolormap->palette, FALSE) == NULL)
984 g_warning ("gdk_gc_predraw: SelectPalette failed");
985 if (TRUE || colormap_private->xcolormap->stale)
987 if ((k = RealizePalette (gc_private->xgc)) == GDI_ERROR)
988 g_warning ("gdk_gc_predraw: RealizePalette failed");
989 colormap_private->xcolormap->stale = FALSE;
992 g_print ("Selected palette %#x for gc %#x, realized %d colors\n",
993 colormap_private->xcolormap->palette, gc_private->xgc, k);
995 fg = PALETTEINDEX (gc_private->foreground.pixel);
999 COLORREF foreground = RGB (gc_private->foreground.red >> 8,
1000 gc_private->foreground.green >> 8,
1001 gc_private->foreground.blue >> 8);
1002 fg = GetNearestColor (gc_private->xgc, foreground);
1004 logbrush.lbStyle = BS_SOLID;
1005 logbrush.lbColor = fg;
1006 if ((hpen = ExtCreatePen (gc_private->pen_style, gc_private->pen_width,
1007 &logbrush, 0, NULL)) == NULL)
1008 g_warning ("gdk_gc_predraw: CreatePen failed");
1010 if (SelectObject (gc_private->xgc, hpen) == NULL)
1011 g_warning ("gdk_gc_predraw: SelectObject #2 failed");
1013 if (SetTextColor (gc_private->xgc, fg) == CLR_INVALID)
1014 g_warning ("gdk_gc_predraw: SetTextColor failed");
1016 if ((hbr = CreateSolidBrush (fg)) == NULL)
1017 g_warning ("gdk_gc_predraw: CreateSolidBrush failed");
1019 if (SelectObject (gc_private->xgc, hbr) == NULL)
1020 g_warning ("gdk_gc_predraw: SelectObject #3 failed");
1022 if (gc_private->values_mask & GDK_GC_BACKGROUND)
1024 if (colormap_private == NULL)
1027 bg = PALETTEINDEX (gc_private->background.pixel);
1029 else if (colormap_private != NULL
1030 && colormap_private->xcolormap->rc_palette)
1032 bg = PALETTEINDEX (gc_private->background.pixel);
1036 COLORREF background = RGB (gc_private->background.red >> 8,
1037 gc_private->background.green >> 8,
1038 gc_private->background.blue >> 8);
1039 bg = GetNearestColor (gc_private->xgc, background);
1041 if (SetBkColor (gc_private->xgc, bg) == CLR_INVALID)
1042 g_warning ("gdk_gc_predraw: SetBkColor failed");
1045 if (SetBkMode (gc_private->xgc, TRANSPARENT) == 0)
1046 g_warning ("gdk_gc_predraw: SetBkMode failed");
1048 if (SetTextAlign (gc_private->xgc, TA_BASELINE) == GDI_ERROR)
1049 g_warning ("gdk_gc_predraw: SetTextAlign failed");
1051 if (gc_private->values_mask & GDK_GC_FONT)
1052 if (SelectObject (gc_private->xgc, gc_private->font) == NULL)
1053 g_warning ("gdk_gc_predraw: SelectObject #4 failed");
1055 if (gc_private->values_mask & GDK_GC_FUNCTION)
1056 if (SetROP2 (gc_private->xgc, gc_private->rop2) == 0)
1057 g_warning ("gdk_gc_predraw: SetROP2 failed");
1059 if (gc_private->values_mask & GDK_GC_CLIP_MASK
1060 && gc_private->clip_region != NULL)
1062 if (gc_private->values_mask & (GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN))
1063 OffsetRgn (gc_private->clip_region,
1064 gc_private->clip_x_origin, gc_private->clip_y_origin);
1065 SelectClipRgn (gc_private->xgc, gc_private->clip_region);
1068 return gc_private->xgc;
1072 gdk_gc_postdraw (GdkWindowPrivate *window_private,
1073 GdkGCPrivate *gc_private)
1077 GdkColormapPrivate *colormap_private =
1078 (GdkColormapPrivate *) window_private->colormap;
1080 if ((hpen = GetCurrentObject (gc_private->xgc, OBJ_PEN)) == NULL)
1081 g_warning ("gdk_gc_postdraw: GetCurrentObject #1 failed");
1083 if ((hbr = GetCurrentObject (gc_private->xgc, OBJ_BRUSH)) == NULL)
1084 g_warning ("gdk_gc_postdraw: GetCurrentObject #2 failed");
1086 if (!RestoreDC (gc_private->xgc, gc_private->saved_dc))
1087 g_warning ("gdk_gc_postdraw: RestoreDC failed");
1089 if (colormap_private != NULL
1090 && colormap_private->xcolormap->rc_palette
1091 && colormap_private->xcolormap->stale)
1093 SelectPalette (gc_private->xgc, GetStockObject (DEFAULT_PALETTE), FALSE);
1094 if (!UnrealizeObject (colormap_private->xcolormap->palette))
1095 g_warning ("gdk_gc_postraw: UnrealizeObject failed");
1098 if (window_private->window_type == GDK_WINDOW_PIXMAP)
1100 if (!DeleteDC (gc_private->xgc))
1101 g_warning ("gdk_gc_postdraw: DeleteDC failed");
1105 ReleaseDC (gc_private->hwnd, gc_private->xgc);
1109 if (!DeleteObject (hpen))
1110 g_warning ("gdk_gc_postdraw: DeleteObject #1 failed");
1113 if (!DeleteObject (hbr))
1114 g_warning ("gdk_gc_postdraw: DeleteObject #2 failed");
1116 gc_private->xgc = NULL;
1119 /* This function originally from Jean-Edouard Lachand-Robert, and
1120 * available at www.codeguru.com. Simplified for our needs, now
1121 * handles just one-bit deep bitmaps (in Window parlance, ie those
1122 * that GDK calls bitmaps (and not pixmaps), with zero pixels being
1127 * BitmapToRegion : Create a region from the "non-transparent" pixels of
1129 * Author : Jean-Edouard Lachand-Robert
1130 * (http://www.geocities.com/Paris/LeftBank/1160/resume.htm), June 1998.
1134 BitmapToRegion (HBITMAP hBmp)
1142 BITMAPINFOHEADER bmiHeader;
1146 RGBQUAD bmiColors[2];
1155 PALETTEENTRY palPalEntry[2];
1157 static HPALETTE bwPalette = NULL;
1170 /* Create a B&W palette */
1171 if (bwPalette == NULL)
1173 /* Create a b&w palette */
1174 logpal.palVersion = 0x300;
1175 logpal.palNumEntries = 2;
1176 logpal.palPalEntry[0].peRed =
1177 logpal.palPalEntry[0].peGreen =
1178 logpal.palPalEntry[0].peBlue = 0;
1179 logpal.palPalEntry[0].peFlags = 0;
1180 logpal.palPalEntry[1].peRed =
1181 logpal.palPalEntry[1].peGreen =
1182 logpal.palPalEntry[1].peBlue = 0xFF;
1183 logpal.palPalEntry[1].peFlags = 0;
1184 if ((bwPalette = CreatePalette ((LOGPALETTE *) &logpal)) == NULL)
1185 g_warning ("BitmapToRegion: CreatePalette failed");
1188 /* Create a memory DC inside which we will scan the bitmap content */
1189 hMemDC = CreateCompatibleDC (NULL);
1192 g_warning ("BitmapToRegion: CreateCompatibleDC #1 failed");
1196 SelectPalette (hMemDC, bwPalette, FALSE);
1197 RealizePalette (hMemDC);
1199 /* Get bitmap size */
1200 GetObject(hBmp, sizeof(bm), &bm);
1202 /* Create a 8 bits depth bitmap and select it into the memory DC */
1203 bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
1204 bmi.bmiHeader.biWidth = bm.bmWidth;
1205 bmi.bmiHeader.biHeight = bm.bmHeight;
1206 bmi.bmiHeader.biPlanes = 1;
1207 bmi.bmiHeader.biBitCount = 8;
1208 bmi.bmiHeader.biCompression = BI_RGB;
1209 bmi.bmiHeader.biSizeImage = 0;
1210 bmi.bmiHeader.biXPelsPerMeter = 0;
1211 bmi.bmiHeader.biYPelsPerMeter = 0;
1212 bmi.bmiHeader.biClrUsed = 2;
1213 bmi.bmiHeader.biClrImportant = 2;
1215 bmi.bmiColors[0] = 0;
1216 bmi.bmiColors[1] = 1;
1217 hbm8 = CreateDIBSection (hMemDC, (BITMAPINFO *)&bmi,
1218 DIB_PAL_COLORS, &pbits8, NULL, 0);
1220 bmi.bmiColors[0].rgbBlue =
1221 bmi.bmiColors[0].rgbGreen =
1222 bmi.bmiColors[0].rgbRed = 0x00;
1223 bmi.bmiColors[0].rgbReserved = 0x00;
1225 bmi.bmiColors[1].rgbBlue =
1226 bmi.bmiColors[1].rgbGreen =
1227 bmi.bmiColors[1].rgbRed = 0xFF;
1228 bmi.bmiColors[0].rgbReserved = 0x00;
1230 hbm8 = CreateDIBSection (hMemDC, (BITMAPINFO *)&bmi,
1231 DIB_RGB_COLORS, &pbits8, NULL, 0);
1235 g_warning ("BitmapToRegion: CreateDIBSection failed");
1240 holdBmp = (HBITMAP) SelectObject (hMemDC, hbm8);
1242 /* Create a DC just to copy the bitmap into the memory DC*/
1243 hDC = CreateCompatibleDC (hMemDC);
1246 g_warning ("BitmapToRegion: CreateCompatibleDC #2 failed");
1247 SelectObject (hMemDC, holdBmp);
1248 DeleteObject (hbm8);
1253 /* Get how many bytes per row we have for the bitmap bits */
1254 GetObject (hbm8, sizeof (bm8), &bm8);
1256 /* Hans Breuer found a fix to the long-standing erroneous behaviour
1257 * on NT 4.0: There seems to be a bug in Win NT 4.0 GDI: scanlines
1258 * in bitmaps are dword aligned on both Win95 and NT. In the case of
1259 * a bitmap with 22 bytes worth of width, GetObject above returns
1260 * with bmWidth == 22. On Win95 bmWidthBytes == 24, as it should be,
1261 * but on NT is it 22. We need to correct this here.
1263 bm8.bmWidthBytes = (((bm8.bmWidthBytes-1)/4)+1)*4; /* dword aligned!! */
1265 /* Copy the bitmap into the memory DC*/
1266 holdBmp2 = (HBITMAP) SelectObject (hDC, hBmp);
1268 if (!BitBlt (hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY))
1270 g_warning ("BitmapToRegion: BitBlt failed");
1271 SelectObject (hDC, holdBmp2);
1272 SelectObject (hMemDC, holdBmp);
1273 DeleteObject (hbm8);
1277 SelectObject (hDC, holdBmp2);
1280 /* For better performances, we will use the ExtCreateRegion()
1281 * function to create the region. This function take a RGNDATA
1282 * structure on entry. We will add rectangles by amount of
1283 * ALLOC_UNIT number in this structure.
1285 #define ALLOC_UNIT 100
1286 maxRects = ALLOC_UNIT;
1288 pData = g_malloc (sizeof (RGNDATAHEADER) + (sizeof (RECT) * maxRects));
1289 pData->rdh.dwSize = sizeof (RGNDATAHEADER);
1290 pData->rdh.iType = RDH_RECTANGLES;
1291 pData->rdh.nCount = pData->rdh.nRgnSize = 0;
1292 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1294 /* Scan each bitmap from bottom to top (the bitmap is inverted vertically)*/
1295 p8 = (BYTE *) pbits8 + (bm8.bmHeight - 1) * bm8.bmWidthBytes;
1296 for (y = 0; y < bm.bmHeight; y++)
1298 /* Scan each bitmap row from left to right*/
1299 for (x = 0; x < bm.bmWidth; x++)
1301 /* Search for a continuous range of "non transparent pixels"*/
1304 while (x < bm.bmWidth)
1307 /* This pixel is "transparent"*/
1316 /* Add the pixels (x0, y) to (x, y+1) as a new rectangle
1319 if (pData->rdh.nCount >= maxRects)
1321 maxRects += ALLOC_UNIT;
1322 pData = g_realloc (pData, sizeof(RGNDATAHEADER)
1323 + (sizeof(RECT) * maxRects));
1325 pr = (RECT *) &pData->Buffer;
1326 SetRect (&pr[pData->rdh.nCount], x0, y, x, y+1);
1327 if (x0 < pData->rdh.rcBound.left)
1328 pData->rdh.rcBound.left = x0;
1329 if (y < pData->rdh.rcBound.top)
1330 pData->rdh.rcBound.top = y;
1331 if (x > pData->rdh.rcBound.right)
1332 pData->rdh.rcBound.right = x;
1333 if (y+1 > pData->rdh.rcBound.bottom)
1334 pData->rdh.rcBound.bottom = y+1;
1335 pData->rdh.nCount++;
1337 /* On Windows98, ExtCreateRegion() may fail if the
1338 * number of rectangles is too large (ie: >
1339 * 4000). Therefore, we have to create the region by
1342 if (pData->rdh.nCount == 2000)
1344 HRGN h = ExtCreateRegion (NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
1347 CombineRgn(hRgn, hRgn, h, RGN_OR);
1352 pData->rdh.nCount = 0;
1353 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1358 /* Go to next row (remember, the bitmap is inverted vertically)*/
1359 p8 -= bm8.bmWidthBytes;
1362 /* Create or extend the region with the remaining rectangles*/
1363 h = ExtCreateRegion (NULL, sizeof (RGNDATAHEADER)
1364 + (sizeof (RECT) * maxRects), pData);
1367 CombineRgn (hRgn, hRgn, h, RGN_OR);
1374 SelectObject(hMemDC, holdBmp);
1375 DeleteObject (hbm8);