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/.
32 #include "gdkpixmap.h"
33 #include "gdkprivate.h"
37 gdk_gc_new (GdkWindow *window)
39 return gdk_gc_new_with_values (window, NULL, 0);
43 gdk_gc_new_with_values (GdkWindow *window,
45 GdkGCValuesMask values_mask)
48 GdkGCPrivate *private;
49 static GdkColor black;
50 static GdkColor white;
51 static gboolean beenhere = FALSE;
55 gdk_color_black (gdk_colormap_get_system (), &black);
56 gdk_color_white (gdk_colormap_get_system (), &white);
60 g_return_val_if_fail (window != NULL, NULL);
62 if (GDK_DRAWABLE_DESTROYED (window))
65 private = g_new (GdkGCPrivate, 1);
66 gc = (GdkGC*) private;
68 private->ref_count = 1;
69 private->rop2 = R2_COPYPEN;
70 private->fill_style = GDK_SOLID;
71 private->values_mask = values_mask;
72 private->values_mask |= GDK_GC_FUNCTION | GDK_GC_FILL;
74 GDK_NOTE (MISC, g_print ("gdk_gc_new: {"));
76 if (values_mask & GDK_GC_FOREGROUND)
78 private->foreground = values->foreground;
81 private->foreground = black;
83 if (values_mask & GDK_GC_BACKGROUND)
85 private->background = values->background;
88 private->background = white;
90 if ((values_mask & GDK_GC_FONT) && (values->font->type == GDK_FONT_FONT
91 || values->font->type == GDK_FONT_FONTSET))
93 private->font = (HFONT) ((GdkFontPrivate*) values->font)->xfont;
94 GDK_NOTE (MISC, g_print (" font=%#x", private->font));
97 if (values_mask & GDK_GC_FUNCTION)
99 switch (values->function)
102 private->rop2 = R2_COPYPEN; break;
104 private->rop2 = R2_NOT; break;
106 private->rop2 = R2_XORPEN; break;
108 private->rop2 = R2_BLACK; break;
110 private->rop2 = R2_MASKPEN; break;
111 case GDK_AND_REVERSE:
112 private->rop2 = R2_MASKPENNOT; break;
114 private->rop2 = R2_MASKNOTPEN; break;
116 private->rop2 = R2_NOP; break;
118 private->rop2 = R2_MERGEPEN; break;
120 private->rop2 = R2_NOTXORPEN; break;
122 private->rop2 = R2_MERGEPENNOT; break;
123 case GDK_COPY_INVERT:
124 private->rop2 = R2_NOTCOPYPEN; break;
126 private->rop2 = R2_MERGENOTPEN; break;
128 private->rop2 = R2_NOTMASKPEN; break;
130 private->rop2 = R2_WHITE; break;
132 GDK_NOTE (MISC, g_print (" function=%d", private->rop2));
135 if (values_mask & GDK_GC_FILL)
137 private->fill_style = values->fill;
138 GDK_NOTE (MISC, g_print (" fill=%d", private->fill_style));
141 if (values_mask & GDK_GC_TILE)
143 private->tile = values->tile;
144 gdk_pixmap_ref (private->tile);
145 GDK_NOTE (MISC, g_print (" tile=%#x", GDK_DRAWABLE_XID (private->tile)));
148 private->tile = NULL;
150 if (values_mask & GDK_GC_STIPPLE)
152 private->stipple = values->stipple;
153 gdk_pixmap_ref (private->stipple);
154 GDK_NOTE (MISC, g_print (" stipple=%#x", GDK_DRAWABLE_XID (private->stipple)));
157 private->stipple = NULL;
159 if (values_mask & GDK_GC_CLIP_MASK)
161 private->clip_region =
162 BitmapToRegion ((HBITMAP) GDK_DRAWABLE_XID (values->clip_mask));
163 GDK_NOTE (MISC, g_print (" clip=%#x", private->clip_region));
166 private->clip_region = NULL;
168 if (values_mask & GDK_GC_SUBWINDOW)
170 private->subwindow_mode = values->subwindow_mode;
171 GDK_NOTE (MISC, g_print (" subw=%d", private->subwindow_mode));
174 if (values_mask & GDK_GC_TS_X_ORIGIN)
176 private->ts_x_origin = values->ts_x_origin;
177 GDK_NOTE (MISC, g_print (" ts_x=%d", private->ts_x_origin));
180 if (values_mask & GDK_GC_TS_Y_ORIGIN)
182 private->ts_y_origin = values->ts_y_origin;
183 GDK_NOTE (MISC, g_print (" ts_y=%d", private->ts_y_origin));
186 if (values_mask & GDK_GC_CLIP_X_ORIGIN)
188 private->clip_x_origin = values->clip_x_origin;
189 GDK_NOTE (MISC, g_print (" clip_x=%d", private->clip_x_origin));
192 if (values_mask & GDK_GC_CLIP_Y_ORIGIN)
194 private->clip_y_origin = values->clip_y_origin;
195 GDK_NOTE (MISC, g_print (" clip_y=%d", private->clip_y_origin));
198 if (values_mask & GDK_GC_EXPOSURES)
200 private->graphics_exposures = values->graphics_exposures;
201 GDK_NOTE (MISC, g_print (" exp=%d", private->graphics_exposures));
204 private->pen_style = PS_GEOMETRIC;
205 private->pen_width = 1;
207 if (values_mask & (GDK_GC_LINE_WIDTH | GDK_GC_LINE_STYLE))
209 if (values_mask & GDK_GC_LINE_WIDTH)
211 private->pen_width = values->line_width;
212 GDK_NOTE (MISC, g_print (" pw=%d", private->pen_width));
214 if (values_mask & GDK_GC_LINE_STYLE)
216 switch (values->line_style)
219 private->pen_style |= PS_SOLID; break;
220 case GDK_LINE_ON_OFF_DASH:
221 case GDK_LINE_DOUBLE_DASH: /* ??? */
222 private->pen_style |= PS_DASH; break;
224 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
228 if (values_mask & GDK_GC_CAP_STYLE)
230 switch (values->cap_style)
232 case GDK_CAP_NOT_LAST: /* ??? */
234 private->pen_style |= PS_ENDCAP_FLAT; break;
236 private->pen_style |= PS_ENDCAP_ROUND; break;
237 case GDK_CAP_PROJECTING:
238 private->pen_style |= PS_ENDCAP_SQUARE; break;
240 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
243 if (values_mask & GDK_GC_JOIN_STYLE)
245 switch (values->join_style)
248 private->pen_style |= PS_JOIN_MITER;
251 private->pen_style |= PS_JOIN_ROUND;
254 private->pen_style |= PS_JOIN_BEVEL;
257 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
260 private->hwnd = NULL;
263 GDK_NOTE (MISC, g_print ("} = %p\n", private));
269 gdk_gc_destroy (GdkGC *gc)
275 gdk_gc_ref (GdkGC *gc)
277 GdkGCPrivate *private = (GdkGCPrivate*) gc;
279 g_return_val_if_fail (gc != NULL, NULL);
280 private->ref_count += 1;
286 gdk_gc_unref (GdkGC *gc)
288 GdkGCPrivate *private = (GdkGCPrivate*) gc;
290 g_return_if_fail (gc != NULL);
292 if (private->ref_count > 1)
293 private->ref_count -= 1;
296 if (private->values_mask & GDK_GC_FONT)
299 if (!DeleteObject (private->font))
300 g_warning ("gdk_gc_unref: DeleteObject #3 failed");
304 if (private->values_mask & GDK_GC_TILE)
306 gdk_pixmap_unref (private->tile);
309 if (private->values_mask & GDK_GC_STIPPLE)
311 gdk_pixmap_unref (private->stipple);
314 if (private->values_mask & GDK_GC_CLIP_MASK)
316 DeleteObject (private->clip_region);
318 memset (gc, 0, sizeof (GdkGCPrivate));
324 gdk_gc_get_values (GdkGC *gc,
327 GdkGCPrivate *private;
329 g_return_if_fail (gc != NULL);
330 g_return_if_fail (values != NULL);
332 private = (GdkGCPrivate*) gc;
334 values->foreground = private->foreground;
335 values->background = private->background;
336 values->font = gdk_font_lookup (private->font);
338 switch (private->rop2)
341 values->function = GDK_COPY; break;
343 values->function = GDK_INVERT; break;
345 values->function = GDK_XOR; break;
347 values->function = GDK_CLEAR; break;
349 values->function = GDK_AND; break;
351 values->function = GDK_AND_REVERSE; break;
353 values->function = GDK_AND_INVERT; break;
355 values->function = GDK_NOOP; break;
357 values->function = GDK_OR; break;
359 values->function = GDK_EQUIV; break;
361 values->function = GDK_OR_REVERSE; break;
363 values->function = GDK_COPY_INVERT; break;
365 values->function = GDK_OR_INVERT; break;
367 values->function = GDK_NAND; break;
369 values->function = GDK_SET; break;
372 values->fill = private->fill_style;
374 values->tile = private->tile;
375 values->stipple = private->stipple;
376 if (private->clip_region != NULL)
384 GetRgnBox (private->clip_region, &rect);
386 gdk_pixmap_new (NULL, rect.right - rect.left, rect.bottom - rect.top,
388 hbr = GetStockObject (WHITE_BRUSH);
389 if ((hdc = CreateCompatibleDC (NULL)) == NULL)
390 g_warning ("gdk_gc_get_values: CreateCompatibleDC failed");
392 SelectObject (hdc, GDK_DRAWABLE_XID (pixmap))) == NULL)
393 g_warning ("gdk_gc_get_values: SelectObject #1 failed");
394 hbr = GetStockObject (BLACK_BRUSH);
395 if (!FillRect (hdc, &rect, hbr))
396 g_warning ("gdk_gc_get_values: FillRect failed");
397 hbr = GetStockObject (WHITE_BRUSH);
398 if (!FillRgn (hdc, private->clip_region, hbr))
399 g_warning ("gdk_gc_get_values: FillRgn failed");
400 if (SelectObject (hdc, oldbitmap) == NULL)
401 g_warning ("gdk_gc_get_values: SelectObject #2 failed");
403 values->clip_mask = pixmap;
406 values->clip_mask = NULL;
407 values->subwindow_mode = private->subwindow_mode;
408 values->ts_x_origin = private->ts_x_origin;
409 values->ts_y_origin = private->ts_y_origin;
410 values->clip_x_origin = private->clip_x_origin;
411 values->clip_y_origin = private->clip_y_origin;
412 values->graphics_exposures = private->graphics_exposures;
413 values->line_width = private->pen_width;
415 if (private->pen_style & PS_SOLID)
416 values->line_style = GDK_LINE_SOLID;
417 else if (private->pen_style & PS_DASH)
418 values->line_style = GDK_LINE_ON_OFF_DASH;
420 values->line_style = GDK_LINE_SOLID;
422 /* PS_ENDCAP_ROUND is zero */
423 if (private->pen_style & PS_ENDCAP_FLAT)
424 values->cap_style = GDK_CAP_BUTT;
425 else if (private->pen_style & PS_ENDCAP_SQUARE)
426 values->cap_style = GDK_CAP_PROJECTING;
428 values->cap_style = GDK_CAP_ROUND;
430 /* PS_JOIN_ROUND is zero */
431 if (private->pen_style & PS_JOIN_MITER)
432 values->join_style = GDK_JOIN_MITER;
433 else if (private->pen_style & PS_JOIN_BEVEL)
434 values->join_style = GDK_JOIN_BEVEL;
436 values->join_style = GDK_JOIN_ROUND;
440 gdk_gc_set_foreground (GdkGC *gc,
443 GdkGCPrivate *private;
445 g_return_if_fail (gc != NULL);
446 g_return_if_fail (color != NULL);
448 private = (GdkGCPrivate*) gc;
450 GDK_NOTE (MISC, g_print ("gdk_gc_set_foreground: (%d) %s\n",
451 private, gdk_color_to_string (color)));
452 private->foreground = *color;
453 private->values_mask |= GDK_GC_FOREGROUND;
458 gdk_gc_set_background (GdkGC *gc,
461 GdkGCPrivate *private;
463 g_return_if_fail (gc != NULL);
464 g_return_if_fail (color != NULL);
466 private = (GdkGCPrivate*) gc;
468 GDK_NOTE (MISC, g_print ("gdk_gc_set_backround: (%d) %s\n",
469 private, gdk_color_to_string(color)));
470 private->background = *color;
471 private->values_mask |= GDK_GC_BACKGROUND;
475 gdk_gc_set_font (GdkGC *gc,
478 GdkGCPrivate *gc_private;
479 GdkFontPrivate *font_private;
481 g_return_if_fail (gc != NULL);
482 g_return_if_fail (font != NULL);
484 if (font->type == GDK_FONT_FONT
485 || font->type == GDK_FONT_FONTSET)
487 gc_private = (GdkGCPrivate*) gc;
488 font_private = (GdkFontPrivate*) font;
490 GDK_NOTE (MISC, g_print ("gdk_gc_set_font: (%d) %#x\n",
491 gc_private, font_private->xfont));
493 gc_private->font = font_private->xfont;
494 gc_private->values_mask |= GDK_GC_FONT;
499 gdk_gc_set_function (GdkGC *gc,
500 GdkFunction function)
502 GdkGCPrivate *private;
504 g_return_if_fail (gc != NULL);
506 private = (GdkGCPrivate*) gc;
508 GDK_NOTE (MISC, g_print ("gdk_gc_set_function: (%d) %d\n", private, function));
513 private->rop2 = R2_COPYPEN; break;
515 private->rop2 = R2_NOT; break;
517 private->rop2 = R2_XORPEN; break;
519 private->rop2 = R2_BLACK; break;
521 private->rop2 = R2_MASKPEN; break;
522 case GDK_AND_REVERSE:
523 private->rop2 = R2_MASKPENNOT; break;
525 private->rop2 = R2_MASKNOTPEN; break;
527 private->rop2 = R2_NOP; break;
529 private->rop2 = R2_MERGEPEN; break;
531 private->rop2 = R2_NOTXORPEN; break;
533 private->rop2 = R2_MERGEPENNOT; break;
534 case GDK_COPY_INVERT:
535 private->rop2 = R2_NOTCOPYPEN; break;
537 private->rop2 = R2_MERGENOTPEN; break;
539 private->rop2 = R2_NOTMASKPEN; break;
541 private->rop2 = R2_WHITE; break;
543 private->values_mask |= GDK_GC_FUNCTION;
547 gdk_gc_set_fill (GdkGC *gc,
550 GdkGCPrivate *private;
552 g_return_if_fail (gc != NULL);
554 private = (GdkGCPrivate*) gc;
556 private->fill_style = fill;
557 private->values_mask |= GDK_GC_FILL;
561 gdk_gc_set_tile (GdkGC *gc,
564 GdkGCPrivate *private;
567 g_return_if_fail (gc != NULL);
569 private = (GdkGCPrivate*) gc;
574 pixmap = GDK_DRAWABLE_XID (tile);
576 if (private->tile != NULL)
577 gdk_pixmap_unref (private->tile);
578 private->tile = tile;
580 gdk_pixmap_ref (tile);
582 private->values_mask |= GDK_GC_TILE;
584 private->values_mask &= ~GDK_GC_TILE;
588 gdk_gc_set_stipple (GdkGC *gc,
591 GdkGCPrivate *private;
594 g_return_if_fail (gc != NULL);
596 private = (GdkGCPrivate*) gc;
601 pixmap = GDK_DRAWABLE_XID (stipple);
603 if (private->stipple != NULL)
604 gdk_pixmap_unref (private->stipple);
605 private->stipple = stipple;
607 gdk_pixmap_ref (stipple);
609 private->values_mask |= GDK_GC_STIPPLE;
611 private->values_mask &= ~GDK_GC_STIPPLE;
615 gdk_gc_set_ts_origin (GdkGC *gc,
619 GdkGCPrivate *private;
621 g_return_if_fail (gc != NULL);
623 private = (GdkGCPrivate*) gc;
625 private->ts_x_origin = x;
626 private->ts_y_origin = y;
627 private->values_mask |= GDK_GC_TS_X_ORIGIN |GDK_GC_TS_Y_ORIGIN;
631 gdk_gc_set_clip_origin (GdkGC *gc,
635 GdkGCPrivate *private;
637 g_return_if_fail (gc != NULL);
639 private = (GdkGCPrivate*) gc;
641 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_origin: (%d) +%d+%d\n",
644 private->clip_x_origin = x;
645 private->clip_y_origin = y;
646 private->values_mask |= GDK_GC_CLIP_X_ORIGIN |GDK_GC_CLIP_Y_ORIGIN;
650 gdk_gc_set_clip_mask (GdkGC *gc,
653 GdkGCPrivate *private;
656 g_return_if_fail (gc != NULL);
660 if (GDK_DRAWABLE_DESTROYED (mask))
662 xmask = GDK_DRAWABLE_XID (mask);
667 private = (GdkGCPrivate*) gc;
669 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_mask: (%d) %#x\n", private, xmask));
671 if (private->clip_region != NULL)
672 if (!DeleteObject (private->clip_region))
673 g_warning ("gdk_gc_set_clip_mask: DeleteObject failed");
676 private->clip_region = BitmapToRegion (xmask);
679 GetRgnBox (private->clip_region, &rect);
680 GDK_NOTE (MISC, g_print ("...box = %dx%d@+%d+%d\n",
681 rect.right - rect.left, rect.bottom - rect.top,
682 rect.left, rect.top));
685 /* Test code that sets clip region to whole of mask */
688 GetObject (xmask, sizeof (bm), &bm);
689 private->clip_region = CreateRectRgn (0, 0, bm.bmWidth, bm.bmHeight);
692 private->values_mask |= GDK_GC_CLIP_MASK;
696 private->values_mask &= ~GDK_GC_CLIP_MASK;
697 private->clip_region = NULL;
702 gdk_gc_set_clip_rectangle (GdkGC *gc,
703 GdkRectangle *rectangle)
705 GdkGCPrivate *private;
707 g_return_if_fail (gc != NULL);
709 private = (GdkGCPrivate*) gc;
711 if (private->clip_region != NULL)
712 if (!DeleteObject (private->clip_region))
713 g_warning ("gdk_gc_set_clip_rectangle: DeleteObject failed");
717 g_print ("gdk_gc_set_clip_rectangle: (%d) %dx%d@+%d+%d\n",
719 rectangle->width, rectangle->height,
720 rectangle->x, rectangle->y));
721 if ((private->clip_region =
722 CreateRectRgn (rectangle->x, rectangle->y,
723 rectangle->x + rectangle->width,
724 rectangle->y + rectangle->height)) == NULL)
725 g_warning ("gdk_gc_set_clip_rectangle: CreateRectRgn failed");
727 private->values_mask |= GDK_GC_CLIP_MASK;
731 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_rectangle: (%d) None\n",
733 private->clip_region = NULL;
734 private->values_mask &= ~GDK_GC_CLIP_MASK;
736 private->values_mask &= ~(GDK_GC_CLIP_X_ORIGIN |GDK_GC_CLIP_Y_ORIGIN);
740 gdk_gc_set_clip_region (GdkGC *gc,
743 GdkGCPrivate *private;
745 g_return_if_fail (gc != NULL);
747 private = (GdkGCPrivate*) gc;
749 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_region: (%d) %s\n",
750 private, (region != NULL ? "xxx" : "None")));
752 if (private->clip_region != NULL)
753 if (!DeleteObject (private->clip_region))
754 g_warning ("gdk_gc_set_clip_region: DeleteObject failed");
757 GdkRegionPrivate *region_private;
759 region_private = (GdkRegionPrivate*) region;
760 private->clip_region = CreateRectRgn (1, 1, 0, 0);
761 CombineRgn (private->clip_region, region_private->xregion, NULL, RGN_COPY);
762 private->values_mask |= GDK_GC_CLIP_MASK;
766 private->clip_region = NULL;
767 private->values_mask &= ~GDK_GC_CLIP_MASK;
772 gdk_gc_set_subwindow (GdkGC *gc,
773 GdkSubwindowMode mode)
775 GdkGCPrivate *private;
777 g_return_if_fail (gc != NULL);
779 private = (GdkGCPrivate*) gc;
781 private->subwindow_mode = mode;
782 private->values_mask |= GDK_GC_SUBWINDOW;
786 gdk_gc_set_exposures (GdkGC *gc,
789 GdkGCPrivate *private;
791 g_return_if_fail (gc != NULL);
793 private = (GdkGCPrivate*) gc;
795 private->graphics_exposures = exposures;
796 private->values_mask |= GDK_GC_EXPOSURES;;
800 gdk_gc_set_line_attributes (GdkGC *gc,
802 GdkLineStyle line_style,
803 GdkCapStyle cap_style,
804 GdkJoinStyle join_style)
806 GdkGCPrivate *private;
811 g_return_if_fail (gc != NULL);
813 private = (GdkGCPrivate*) gc;
816 g_print ("gdk_gc_set_line_attributes: (%d) %d %s %s %s\n",
818 (line_style == GDK_LINE_SOLID ? "SOLID" :
819 (line_style == GDK_LINE_ON_OFF_DASH ? "ON_OFF_DASH" :
820 (line_style == GDK_LINE_DOUBLE_DASH ? "DOUBLE_DASH" :
822 (cap_style == GDK_CAP_BUTT ? "BUTT" :
823 (cap_style == GDK_CAP_ROUND ? "ROUND" :
824 (cap_style == GDK_CAP_PROJECTING ? "PROJECTING" :
826 (join_style == GDK_JOIN_MITER ? "MITER" :
827 (join_style == GDK_JOIN_ROUND ? "ROUND" :
828 (join_style == GDK_JOIN_BEVEL ? "BEVEL" :
831 private->pen_width = line_width;
833 /* Mask old style bits away */
834 private->pen_style &= ~(PS_STYLE_MASK|PS_ENDCAP_MASK|PS_JOIN_MASK);
840 private->pen_style |= PS_SOLID; break;
841 case GDK_LINE_ON_OFF_DASH:
842 case GDK_LINE_DOUBLE_DASH: /* ??? */
843 private->pen_style |= PS_DASH; break;
848 case GDK_CAP_NOT_LAST:
852 private->pen_style |= PS_ENDCAP_FLAT; break;
854 private->pen_style |= PS_ENDCAP_ROUND; break;
855 case GDK_CAP_PROJECTING:
856 private->pen_style |= PS_ENDCAP_SQUARE; break;
862 private->pen_style |= PS_JOIN_MITER;
865 private->pen_style |= PS_JOIN_ROUND;
868 private->pen_style |= PS_JOIN_BEVEL;
874 gdk_gc_set_dashes (GdkGC *gc,
879 GdkGCPrivate *private;
881 g_return_if_fail (gc != NULL);
882 g_return_if_fail (dash_list != NULL);
886 private = (GdkGCPrivate *) gc;
888 private->pen_style &= ~(PS_STYLE_MASK);
889 private->pen_style |= PS_DASH;
893 gdk_gc_copy (GdkGC *dst_gc, GdkGC *src_gc)
895 GdkGCPrivate *dst_private, *src_private;
897 src_private = (GdkGCPrivate *) src_gc;
898 dst_private = (GdkGCPrivate *) dst_gc;
900 *dst_private = *src_private;
904 gdk_gc_predraw (GdkDrawablePrivate *drawable_private,
905 GdkGCPrivate *gc_private)
907 GdkColormapPrivate *colormap_private =
908 (GdkColormapPrivate *) drawable_private->colormap;
915 g_assert (gc_private->xgc == NULL);
917 if (drawable_private->window_type == GDK_DRAWABLE_PIXMAP)
919 if ((gc_private->xgc = CreateCompatibleDC (NULL)) == NULL)
920 g_warning ("gdk_gc_predraw: CreateCompatibleDC failed");
922 if ((gc_private->saved_dc = SaveDC (gc_private->xgc)) == 0)
923 g_warning ("gdk_gc_predraw: SaveDC #1 failed");
925 if (SelectObject (gc_private->xgc, drawable_private->xwindow) == NULL)
926 g_warning ("gdk_gc_predraw: SelectObject #1 failed");
930 if ((gc_private->xgc = GetDC (drawable_private->xwindow)) == NULL)
931 g_warning ("gdk_gc_predraw: GetDC failed");
933 if ((gc_private->saved_dc = SaveDC (gc_private->xgc)) == 0)
934 g_warning ("gdk_gc_predraw: SaveDC #2 failed");
937 gc_private->hwnd = drawable_private->xwindow;
939 if (colormap_private == NULL)
941 /* A 1 bit deep bitmap */
946 PALETTEENTRY palPalEntry[2];
948 static HPALETTE hpal = NULL;
952 /* Create a b&w palette */
953 logpal.palVersion = 0x300;
954 logpal.palNumEntries = 2;
955 logpal.palPalEntry[0].peRed =
956 logpal.palPalEntry[0].peGreen =
957 logpal.palPalEntry[0].peBlue = 0x00;
958 logpal.palPalEntry[0].peFlags = 0x00;
959 logpal.palPalEntry[1].peRed =
960 logpal.palPalEntry[1].peGreen =
961 logpal.palPalEntry[1].peBlue = 0xFF;
962 logpal.palPalEntry[1].peFlags = 0x00;
963 if ((hpal = CreatePalette ((LOGPALETTE *) &logpal)) == NULL)
964 g_warning ("gdk_gc_predraw: CreatePalette failed");
966 SelectPalette (gc_private->xgc, hpal, FALSE);
967 RealizePalette (gc_private->xgc);
968 fg = PALETTEINDEX (gc_private->foreground.pixel);
970 else if (colormap_private != NULL
971 && colormap_private->xcolormap->rc_palette)
974 if (SelectPalette (gc_private->xgc,
975 colormap_private->xcolormap->palette, FALSE) == NULL)
976 g_warning ("gdk_gc_predraw: SelectPalette failed");
977 if (TRUE || colormap_private->xcolormap->stale)
979 if ((k = RealizePalette (gc_private->xgc)) == GDI_ERROR)
980 g_warning ("gdk_gc_predraw: RealizePalette failed");
981 colormap_private->xcolormap->stale = FALSE;
984 g_print ("Selected palette %#x for gc %#x, realized %d colors\n",
985 colormap_private->xcolormap->palette, gc_private->xgc, k);
987 fg = PALETTEINDEX (gc_private->foreground.pixel);
991 COLORREF foreground = RGB (gc_private->foreground.red >> 8,
992 gc_private->foreground.green >> 8,
993 gc_private->foreground.blue >> 8);
994 fg = GetNearestColor (gc_private->xgc, foreground);
996 logbrush.lbStyle = BS_SOLID;
997 logbrush.lbColor = fg;
998 if ((hpen = ExtCreatePen (gc_private->pen_style, gc_private->pen_width,
999 &logbrush, 0, NULL)) == NULL)
1000 g_warning ("gdk_gc_predraw: CreatePen failed");
1002 if (SelectObject (gc_private->xgc, hpen) == NULL)
1003 g_warning ("gdk_gc_predraw: SelectObject #2 failed");
1005 if (SetTextColor (gc_private->xgc, fg) == CLR_INVALID)
1006 g_warning ("gdk_gc_predraw: SetTextColor failed");
1009 switch (gc_private->fill_style)
1013 GdkPixmap *stipple = gc_private->stipple;
1014 GdkPixmapPrivate *stipple_private = (GdkPixmapPrivate *) stipple;
1015 HBITMAP hbm = stipple_private->xwindow;
1016 if (NULL == (hbr = CreatePatternBrush (hbm)))
1017 g_warning ("gdk_gc_predraw: CreatePatternBrush failed");
1020 SetBrushOrg (gc_private->xgc, gc_private->ts_x_origin,
1021 gc_private->ts_y_origin);
1023 SetBrushOrgEx(gc_private->xgc, gc_private->ts_x_origin,
1024 gc_private->ts_y_origin, NULL);
1030 if ((hbr = CreateSolidBrush (fg)) == NULL)
1031 g_warning ("gdk_gc_predraw: CreateSolidBrush failed");
1035 if ((hbr = CreateSolidBrush (fg)) == NULL)
1036 g_warning ("gdk_gc_predraw: CreateSolidBrush failed");
1038 if (SelectObject (gc_private->xgc, hbr) == NULL)
1039 g_warning ("gdk_gc_predraw: SelectObject #3 failed");
1041 if (gc_private->values_mask & GDK_GC_BACKGROUND)
1043 if (colormap_private == NULL)
1046 bg = PALETTEINDEX (gc_private->background.pixel);
1048 else if (colormap_private != NULL
1049 && colormap_private->xcolormap->rc_palette)
1051 bg = PALETTEINDEX (gc_private->background.pixel);
1055 COLORREF background = RGB (gc_private->background.red >> 8,
1056 gc_private->background.green >> 8,
1057 gc_private->background.blue >> 8);
1058 bg = GetNearestColor (gc_private->xgc, background);
1060 if (SetBkColor (gc_private->xgc, bg) == CLR_INVALID)
1061 g_warning ("gdk_gc_predraw: SetBkColor failed");
1064 if (SetBkMode (gc_private->xgc, TRANSPARENT) == 0)
1065 g_warning ("gdk_gc_predraw: SetBkMode failed");
1067 if (SetTextAlign (gc_private->xgc, TA_BASELINE) == GDI_ERROR)
1068 g_warning ("gdk_gc_predraw: SetTextAlign failed");
1070 if (gc_private->values_mask & GDK_GC_FONT)
1071 if (SelectObject (gc_private->xgc, gc_private->font) == NULL)
1072 g_warning ("gdk_gc_predraw: SelectObject #4 failed");
1074 if (gc_private->values_mask & GDK_GC_FUNCTION)
1075 if (SetROP2 (gc_private->xgc, gc_private->rop2) == 0)
1076 g_warning ("gdk_gc_predraw: SetROP2 failed");
1078 if (gc_private->values_mask & GDK_GC_CLIP_MASK
1079 && gc_private->clip_region != NULL)
1081 if (gc_private->values_mask & (GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN))
1082 OffsetRgn (gc_private->clip_region,
1083 gc_private->clip_x_origin, gc_private->clip_y_origin);
1084 SelectClipRgn (gc_private->xgc, gc_private->clip_region);
1087 return gc_private->xgc;
1091 gdk_gc_postdraw (GdkDrawablePrivate *drawable_private,
1092 GdkGCPrivate *gc_private)
1096 GdkColormapPrivate *colormap_private =
1097 (GdkColormapPrivate *) drawable_private->colormap;
1099 if ((hpen = GetCurrentObject (gc_private->xgc, OBJ_PEN)) == NULL)
1100 g_warning ("gdk_gc_postdraw: GetCurrentObject #1 failed");
1102 if ((hbr = GetCurrentObject (gc_private->xgc, OBJ_BRUSH)) == NULL)
1103 g_warning ("gdk_gc_postdraw: GetCurrentObject #2 failed");
1105 if (!RestoreDC (gc_private->xgc, gc_private->saved_dc))
1106 g_warning ("gdk_gc_postdraw: RestoreDC failed");
1108 if (colormap_private != NULL
1109 && colormap_private->xcolormap->rc_palette
1110 && colormap_private->xcolormap->stale)
1112 SelectPalette (gc_private->xgc, GetStockObject (DEFAULT_PALETTE), FALSE);
1113 if (!UnrealizeObject (colormap_private->xcolormap->palette))
1114 g_warning ("gdk_gc_postraw: UnrealizeObject failed");
1117 if (drawable_private->window_type == GDK_DRAWABLE_PIXMAP)
1119 if (!DeleteDC (gc_private->xgc))
1120 g_warning ("gdk_gc_postdraw: DeleteDC failed");
1124 ReleaseDC (gc_private->hwnd, gc_private->xgc);
1128 if (!DeleteObject (hpen))
1129 g_warning ("gdk_gc_postdraw: DeleteObject #1 failed");
1132 if (!DeleteObject (hbr))
1133 g_warning ("gdk_gc_postdraw: DeleteObject #2 failed");
1135 gc_private->xgc = NULL;
1138 /* This function originally from Jean-Edouard Lachand-Robert, and
1139 * available at www.codeguru.com. Simplified for our needs, now
1140 * handles just one-bit deep bitmaps (in Window parlance, ie those
1141 * that GDK calls bitmaps (and not pixmaps), with zero pixels being
1146 * BitmapToRegion : Create a region from the "non-transparent" pixels of
1148 * Author : Jean-Edouard Lachand-Robert
1149 * (http://www.geocities.com/Paris/LeftBank/1160/resume.htm), June 1998.
1153 BitmapToRegion (HBITMAP hBmp)
1161 BITMAPINFOHEADER bmiHeader;
1165 RGBQUAD bmiColors[2];
1174 PALETTEENTRY palPalEntry[2];
1176 static HPALETTE bwPalette = NULL;
1189 /* Create a B&W palette */
1190 if (bwPalette == NULL)
1192 /* Create a b&w palette */
1193 logpal.palVersion = 0x300;
1194 logpal.palNumEntries = 2;
1195 logpal.palPalEntry[0].peRed =
1196 logpal.palPalEntry[0].peGreen =
1197 logpal.palPalEntry[0].peBlue = 0;
1198 logpal.palPalEntry[0].peFlags = 0;
1199 logpal.palPalEntry[1].peRed =
1200 logpal.palPalEntry[1].peGreen =
1201 logpal.palPalEntry[1].peBlue = 0xFF;
1202 logpal.palPalEntry[1].peFlags = 0;
1203 if ((bwPalette = CreatePalette ((LOGPALETTE *) &logpal)) == NULL)
1204 g_warning ("BitmapToRegion: CreatePalette failed");
1207 /* Create a memory DC inside which we will scan the bitmap content */
1208 hMemDC = CreateCompatibleDC (NULL);
1211 g_warning ("BitmapToRegion: CreateCompatibleDC #1 failed");
1215 SelectPalette (hMemDC, bwPalette, FALSE);
1216 RealizePalette (hMemDC);
1218 /* Get bitmap size */
1219 GetObject(hBmp, sizeof(bm), &bm);
1221 /* Create a 8 bits depth bitmap and select it into the memory DC */
1222 bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
1223 bmi.bmiHeader.biWidth = bm.bmWidth;
1224 bmi.bmiHeader.biHeight = bm.bmHeight;
1225 bmi.bmiHeader.biPlanes = 1;
1226 bmi.bmiHeader.biBitCount = 8;
1227 bmi.bmiHeader.biCompression = BI_RGB;
1228 bmi.bmiHeader.biSizeImage = 0;
1229 bmi.bmiHeader.biXPelsPerMeter = 0;
1230 bmi.bmiHeader.biYPelsPerMeter = 0;
1231 bmi.bmiHeader.biClrUsed = 2;
1232 bmi.bmiHeader.biClrImportant = 2;
1234 bmi.bmiColors[0] = 0;
1235 bmi.bmiColors[1] = 1;
1236 hbm8 = CreateDIBSection (hMemDC, (BITMAPINFO *)&bmi,
1237 DIB_PAL_COLORS, &pbits8, NULL, 0);
1239 bmi.bmiColors[0].rgbBlue =
1240 bmi.bmiColors[0].rgbGreen =
1241 bmi.bmiColors[0].rgbRed = 0x00;
1242 bmi.bmiColors[0].rgbReserved = 0x00;
1244 bmi.bmiColors[1].rgbBlue =
1245 bmi.bmiColors[1].rgbGreen =
1246 bmi.bmiColors[1].rgbRed = 0xFF;
1247 bmi.bmiColors[0].rgbReserved = 0x00;
1249 hbm8 = CreateDIBSection (hMemDC, (BITMAPINFO *)&bmi,
1250 DIB_RGB_COLORS, &pbits8, NULL, 0);
1254 g_warning ("BitmapToRegion: CreateDIBSection failed");
1259 holdBmp = (HBITMAP) SelectObject (hMemDC, hbm8);
1261 /* Create a DC just to copy the bitmap into the memory DC*/
1262 hDC = CreateCompatibleDC (hMemDC);
1265 g_warning ("BitmapToRegion: CreateCompatibleDC #2 failed");
1266 SelectObject (hMemDC, holdBmp);
1267 DeleteObject (hbm8);
1272 /* Get how many bytes per row we have for the bitmap bits */
1273 GetObject (hbm8, sizeof (bm8), &bm8);
1275 /* Hans Breuer found a fix to the long-standing erroneous behaviour
1276 * on NT 4.0: There seems to be a bug in Win NT 4.0 GDI: scanlines
1277 * in bitmaps are dword aligned on both Win95 and NT. In the case of
1278 * a bitmap with 22 bytes worth of width, GetObject above returns
1279 * with bmWidth == 22. On Win95 bmWidthBytes == 24, as it should be,
1280 * but on NT is it 22. We need to correct this here.
1282 bm8.bmWidthBytes = (((bm8.bmWidthBytes-1)/4)+1)*4; /* dword aligned!! */
1284 /* Copy the bitmap into the memory DC*/
1285 holdBmp2 = (HBITMAP) SelectObject (hDC, hBmp);
1287 if (!BitBlt (hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY))
1289 g_warning ("BitmapToRegion: BitBlt failed");
1290 SelectObject (hDC, holdBmp2);
1291 SelectObject (hMemDC, holdBmp);
1292 DeleteObject (hbm8);
1296 SelectObject (hDC, holdBmp2);
1299 /* For better performances, we will use the ExtCreateRegion()
1300 * function to create the region. This function take a RGNDATA
1301 * structure on entry. We will add rectangles by amount of
1302 * ALLOC_UNIT number in this structure.
1304 #define ALLOC_UNIT 100
1305 maxRects = ALLOC_UNIT;
1307 pData = g_malloc (sizeof (RGNDATAHEADER) + (sizeof (RECT) * maxRects));
1308 pData->rdh.dwSize = sizeof (RGNDATAHEADER);
1309 pData->rdh.iType = RDH_RECTANGLES;
1310 pData->rdh.nCount = pData->rdh.nRgnSize = 0;
1311 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1313 /* Scan each bitmap from bottom to top (the bitmap is inverted vertically)*/
1314 p8 = (BYTE *) pbits8 + (bm8.bmHeight - 1) * bm8.bmWidthBytes;
1315 for (y = 0; y < bm.bmHeight; y++)
1317 /* Scan each bitmap row from left to right*/
1318 for (x = 0; x < bm.bmWidth; x++)
1320 /* Search for a continuous range of "non transparent pixels"*/
1323 while (x < bm.bmWidth)
1326 /* This pixel is "transparent"*/
1335 /* Add the pixels (x0, y) to (x, y+1) as a new rectangle
1338 if (pData->rdh.nCount >= maxRects)
1340 maxRects += ALLOC_UNIT;
1341 pData = g_realloc (pData, sizeof(RGNDATAHEADER)
1342 + (sizeof(RECT) * maxRects));
1344 pr = (RECT *) &pData->Buffer;
1345 SetRect (&pr[pData->rdh.nCount], x0, y, x, y+1);
1346 if (x0 < pData->rdh.rcBound.left)
1347 pData->rdh.rcBound.left = x0;
1348 if (y < pData->rdh.rcBound.top)
1349 pData->rdh.rcBound.top = y;
1350 if (x > pData->rdh.rcBound.right)
1351 pData->rdh.rcBound.right = x;
1352 if (y+1 > pData->rdh.rcBound.bottom)
1353 pData->rdh.rcBound.bottom = y+1;
1354 pData->rdh.nCount++;
1356 /* On Windows98, ExtCreateRegion() may fail if the
1357 * number of rectangles is too large (ie: >
1358 * 4000). Therefore, we have to create the region by
1361 if (pData->rdh.nCount == 2000)
1363 HRGN h = ExtCreateRegion (NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
1366 CombineRgn(hRgn, hRgn, h, RGN_OR);
1371 pData->rdh.nCount = 0;
1372 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1377 /* Go to next row (remember, the bitmap is inverted vertically)*/
1378 p8 -= bm8.bmWidthBytes;
1381 /* Create or extend the region with the remaining rectangles*/
1382 h = ExtCreateRegion (NULL, sizeof (RGNDATAHEADER)
1383 + (sizeof (RECT) * maxRects), pData);
1386 CombineRgn (hRgn, hRgn, h, RGN_OR);
1393 SelectObject(hMemDC, holdBmp);
1394 DeleteObject (hbm8);