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/.
33 #include "gdkpixmap.h"
34 #include "gdkprivate.h"
38 gdk_gc_new (GdkWindow *window)
40 return gdk_gc_new_with_values (window, NULL, 0);
44 gdk_gc_new_with_values (GdkWindow *window,
46 GdkGCValuesMask values_mask)
49 GdkGCPrivate *private;
50 static GdkColor black;
51 static GdkColor white;
52 static gboolean beenhere = FALSE;
56 gdk_color_black (gdk_colormap_get_system (), &black);
57 gdk_color_white (gdk_colormap_get_system (), &white);
61 g_return_val_if_fail (window != NULL, NULL);
63 if (GDK_DRAWABLE_DESTROYED (window))
66 private = g_new (GdkGCPrivate, 1);
67 gc = (GdkGC*) private;
69 private->ref_count = 1;
70 private->rop2 = R2_COPYPEN;
71 private->fill_style = GDK_SOLID;
72 private->values_mask = values_mask;
73 private->values_mask |= GDK_GC_FUNCTION | GDK_GC_FILL;
75 GDK_NOTE (MISC, g_print ("gdk_gc_new: {"));
77 if (values_mask & GDK_GC_FOREGROUND)
79 private->foreground = values->foreground;
82 private->foreground = black;
84 if (values_mask & GDK_GC_BACKGROUND)
86 private->background = values->background;
89 private->background = white;
91 if ((values_mask & GDK_GC_FONT) && (values->font->type == GDK_FONT_FONT
92 || values->font->type == GDK_FONT_FONTSET))
94 private->font = values->font;
95 gdk_font_ref (private->font);
96 GDK_NOTE (MISC, g_print (" font"));
101 if (values_mask & GDK_GC_FUNCTION)
103 switch (values->function)
106 private->rop2 = R2_COPYPEN; break;
108 private->rop2 = R2_NOT; break;
110 private->rop2 = R2_XORPEN; break;
112 private->rop2 = R2_BLACK; break;
114 private->rop2 = R2_MASKPEN; break;
115 case GDK_AND_REVERSE:
116 private->rop2 = R2_MASKPENNOT; break;
118 private->rop2 = R2_MASKNOTPEN; break;
120 private->rop2 = R2_NOP; break;
122 private->rop2 = R2_MERGEPEN; break;
124 private->rop2 = R2_NOTXORPEN; break;
126 private->rop2 = R2_MERGEPENNOT; break;
127 case GDK_COPY_INVERT:
128 private->rop2 = R2_NOTCOPYPEN; break;
130 private->rop2 = R2_MERGENOTPEN; break;
132 private->rop2 = R2_NOTMASKPEN; break;
134 private->rop2 = R2_WHITE; break;
136 GDK_NOTE (MISC, g_print (" function=%d", private->rop2));
139 if (values_mask & GDK_GC_FILL)
141 private->fill_style = values->fill;
142 GDK_NOTE (MISC, g_print (" fill=%d", private->fill_style));
145 if (values_mask & GDK_GC_TILE)
147 private->tile = values->tile;
148 gdk_pixmap_ref (private->tile);
149 GDK_NOTE (MISC, g_print (" tile=%#x", GDK_DRAWABLE_XID (private->tile)));
152 private->tile = NULL;
154 if (values_mask & GDK_GC_STIPPLE)
156 private->stipple = values->stipple;
157 gdk_pixmap_ref (private->stipple);
158 GDK_NOTE (MISC, g_print (" stipple=%#x", GDK_DRAWABLE_XID (private->stipple)));
161 private->stipple = NULL;
163 if (values_mask & GDK_GC_CLIP_MASK)
165 private->clip_region =
166 BitmapToRegion ((HBITMAP) GDK_DRAWABLE_XID (values->clip_mask));
167 GDK_NOTE (MISC, g_print (" clip=%#x", private->clip_region));
170 private->clip_region = NULL;
172 if (values_mask & GDK_GC_SUBWINDOW)
174 private->subwindow_mode = values->subwindow_mode;
175 GDK_NOTE (MISC, g_print (" subw=%d", private->subwindow_mode));
178 if (values_mask & GDK_GC_TS_X_ORIGIN)
180 private->ts_x_origin = values->ts_x_origin;
181 GDK_NOTE (MISC, g_print (" ts_x=%d", private->ts_x_origin));
184 if (values_mask & GDK_GC_TS_Y_ORIGIN)
186 private->ts_y_origin = values->ts_y_origin;
187 GDK_NOTE (MISC, g_print (" ts_y=%d", private->ts_y_origin));
190 if (values_mask & GDK_GC_CLIP_X_ORIGIN)
192 private->clip_x_origin = values->clip_x_origin;
193 GDK_NOTE (MISC, g_print (" clip_x=%d", private->clip_x_origin));
196 if (values_mask & GDK_GC_CLIP_Y_ORIGIN)
198 private->clip_y_origin = values->clip_y_origin;
199 GDK_NOTE (MISC, g_print (" clip_y=%d", private->clip_y_origin));
202 if (values_mask & GDK_GC_EXPOSURES)
204 private->graphics_exposures = values->graphics_exposures;
205 GDK_NOTE (MISC, g_print (" exp=%d", private->graphics_exposures));
208 private->pen_style = PS_GEOMETRIC;
209 private->pen_width = 1;
211 if (values_mask & (GDK_GC_LINE_WIDTH | GDK_GC_LINE_STYLE))
213 if (values_mask & GDK_GC_LINE_WIDTH)
215 private->pen_width = values->line_width;
216 GDK_NOTE (MISC, g_print (" pw=%d", private->pen_width));
218 if (values_mask & GDK_GC_LINE_STYLE)
220 switch (values->line_style)
223 private->pen_style |= PS_SOLID; break;
224 case GDK_LINE_ON_OFF_DASH:
225 case GDK_LINE_DOUBLE_DASH: /* ??? */
226 private->pen_style |= PS_DASH; break;
228 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
232 if (values_mask & GDK_GC_CAP_STYLE)
234 switch (values->cap_style)
236 case GDK_CAP_NOT_LAST: /* ??? */
238 private->pen_style |= PS_ENDCAP_FLAT; break;
240 private->pen_style |= PS_ENDCAP_ROUND; break;
241 case GDK_CAP_PROJECTING:
242 private->pen_style |= PS_ENDCAP_SQUARE; break;
244 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
247 if (values_mask & GDK_GC_JOIN_STYLE)
249 switch (values->join_style)
252 private->pen_style |= PS_JOIN_MITER;
255 private->pen_style |= PS_JOIN_ROUND;
258 private->pen_style |= PS_JOIN_BEVEL;
261 GDK_NOTE (MISC, g_print (" ps=%#x", private->pen_style));
264 private->hwnd = NULL;
267 GDK_NOTE (MISC, g_print ("} = %p\n", private));
273 gdk_gc_destroy (GdkGC *gc)
279 gdk_gc_ref (GdkGC *gc)
281 GdkGCPrivate *private = (GdkGCPrivate*) gc;
283 g_return_val_if_fail (gc != NULL, NULL);
284 private->ref_count += 1;
290 gdk_gc_unref (GdkGC *gc)
292 GdkGCPrivate *private = (GdkGCPrivate*) gc;
294 g_return_if_fail (gc != NULL);
296 if (private->ref_count > 1)
297 private->ref_count -= 1;
300 if (private->values_mask & GDK_GC_FONT)
301 gdk_font_unref (private->font);
303 if (private->values_mask & GDK_GC_TILE)
304 gdk_pixmap_unref (private->tile);
306 if (private->values_mask & GDK_GC_STIPPLE)
307 gdk_pixmap_unref (private->stipple);
309 if (private->values_mask & GDK_GC_CLIP_MASK)
310 DeleteObject (private->clip_region);
317 gdk_gc_get_values (GdkGC *gc,
320 GdkGCPrivate *private;
322 g_return_if_fail (gc != NULL);
323 g_return_if_fail (values != NULL);
325 private = (GdkGCPrivate*) gc;
327 values->foreground = private->foreground;
328 values->background = private->background;
329 values->font = private->font;
331 switch (private->rop2)
334 values->function = GDK_COPY; break;
336 values->function = GDK_INVERT; break;
338 values->function = GDK_XOR; break;
340 values->function = GDK_CLEAR; break;
342 values->function = GDK_AND; break;
344 values->function = GDK_AND_REVERSE; break;
346 values->function = GDK_AND_INVERT; break;
348 values->function = GDK_NOOP; break;
350 values->function = GDK_OR; break;
352 values->function = GDK_EQUIV; break;
354 values->function = GDK_OR_REVERSE; break;
356 values->function = GDK_COPY_INVERT; break;
358 values->function = GDK_OR_INVERT; break;
360 values->function = GDK_NAND; break;
362 values->function = GDK_SET; break;
365 values->fill = private->fill_style;
367 values->tile = private->tile;
368 values->stipple = private->stipple;
369 if (private->clip_region != NULL)
377 GetRgnBox (private->clip_region, &rect);
379 gdk_pixmap_new (NULL, rect.right - rect.left, rect.bottom - rect.top,
381 hbr = GetStockObject (WHITE_BRUSH);
382 if ((hdc = CreateCompatibleDC (NULL)) == NULL)
383 g_warning ("gdk_gc_get_values: CreateCompatibleDC failed");
385 SelectObject (hdc, GDK_DRAWABLE_XID (pixmap))) == NULL)
386 g_warning ("gdk_gc_get_values: SelectObject #1 failed");
387 hbr = GetStockObject (BLACK_BRUSH);
388 if (!FillRect (hdc, &rect, hbr))
389 g_warning ("gdk_gc_get_values: FillRect failed");
390 hbr = GetStockObject (WHITE_BRUSH);
391 if (!FillRgn (hdc, private->clip_region, hbr))
392 g_warning ("gdk_gc_get_values: FillRgn failed");
393 if (SelectObject (hdc, oldbitmap) == NULL)
394 g_warning ("gdk_gc_get_values: SelectObject #2 failed");
396 values->clip_mask = pixmap;
399 values->clip_mask = NULL;
400 values->subwindow_mode = private->subwindow_mode;
401 values->ts_x_origin = private->ts_x_origin;
402 values->ts_y_origin = private->ts_y_origin;
403 values->clip_x_origin = private->clip_x_origin;
404 values->clip_y_origin = private->clip_y_origin;
405 values->graphics_exposures = private->graphics_exposures;
406 values->line_width = private->pen_width;
408 if (private->pen_style & PS_SOLID)
409 values->line_style = GDK_LINE_SOLID;
410 else if (private->pen_style & PS_DASH)
411 values->line_style = GDK_LINE_ON_OFF_DASH;
413 values->line_style = GDK_LINE_SOLID;
415 /* PS_ENDCAP_ROUND is zero */
416 if (private->pen_style & PS_ENDCAP_FLAT)
417 values->cap_style = GDK_CAP_BUTT;
418 else if (private->pen_style & PS_ENDCAP_SQUARE)
419 values->cap_style = GDK_CAP_PROJECTING;
421 values->cap_style = GDK_CAP_ROUND;
423 /* PS_JOIN_ROUND is zero */
424 if (private->pen_style & PS_JOIN_MITER)
425 values->join_style = GDK_JOIN_MITER;
426 else if (private->pen_style & PS_JOIN_BEVEL)
427 values->join_style = GDK_JOIN_BEVEL;
429 values->join_style = GDK_JOIN_ROUND;
433 gdk_gc_set_foreground (GdkGC *gc,
436 GdkGCPrivate *private;
438 g_return_if_fail (gc != NULL);
439 g_return_if_fail (color != NULL);
441 private = (GdkGCPrivate*) gc;
443 GDK_NOTE (MISC, g_print ("gdk_gc_set_foreground: (%d) %s\n",
444 private, gdk_color_to_string (color)));
445 private->foreground = *color;
446 private->values_mask |= GDK_GC_FOREGROUND;
451 gdk_gc_set_background (GdkGC *gc,
454 GdkGCPrivate *private;
456 g_return_if_fail (gc != NULL);
457 g_return_if_fail (color != NULL);
459 private = (GdkGCPrivate*) gc;
461 GDK_NOTE (MISC, g_print ("gdk_gc_set_backround: (%d) %s\n",
462 private, gdk_color_to_string(color)));
463 private->background = *color;
464 private->values_mask |= GDK_GC_BACKGROUND;
468 gdk_gc_set_font (GdkGC *gc,
471 GdkGCPrivate *gc_private;
472 GdkFontPrivate *font_private;
475 g_return_if_fail (gc != NULL);
476 g_return_if_fail (font != NULL);
478 if (font->type == GDK_FONT_FONT
479 || font->type == GDK_FONT_FONTSET)
481 gc_private = (GdkGCPrivate*) gc;
483 GDK_NOTE (MISC, (xlfd = gdk_font_xlfd_create (font),
484 g_print ("gdk_gc_set_font: (%d) %s\n",
486 gdk_font_xlfd_free (xlfd)));
488 if (gc_private->font != NULL)
489 gdk_font_unref (gc_private->font);
490 gc_private->font = font;
491 gdk_font_ref (gc_private->font);
492 gc_private->values_mask |= GDK_GC_FONT;
497 gdk_gc_set_function (GdkGC *gc,
498 GdkFunction function)
500 GdkGCPrivate *private;
502 g_return_if_fail (gc != NULL);
504 private = (GdkGCPrivate*) gc;
506 GDK_NOTE (MISC, g_print ("gdk_gc_set_function: (%d) %d\n", private, function));
511 private->rop2 = R2_COPYPEN; break;
513 private->rop2 = R2_NOT; break;
515 private->rop2 = R2_XORPEN; break;
517 private->rop2 = R2_BLACK; break;
519 private->rop2 = R2_MASKPEN; break;
520 case GDK_AND_REVERSE:
521 private->rop2 = R2_MASKPENNOT; break;
523 private->rop2 = R2_MASKNOTPEN; break;
525 private->rop2 = R2_NOP; break;
527 private->rop2 = R2_MERGEPEN; break;
529 private->rop2 = R2_NOTXORPEN; break;
531 private->rop2 = R2_MERGEPENNOT; break;
532 case GDK_COPY_INVERT:
533 private->rop2 = R2_NOTCOPYPEN; break;
535 private->rop2 = R2_MERGENOTPEN; break;
537 private->rop2 = R2_NOTMASKPEN; break;
539 private->rop2 = R2_WHITE; break;
541 private->values_mask |= GDK_GC_FUNCTION;
545 gdk_gc_set_fill (GdkGC *gc,
548 GdkGCPrivate *private;
550 g_return_if_fail (gc != NULL);
552 private = (GdkGCPrivate*) gc;
554 private->fill_style = fill;
555 private->values_mask |= GDK_GC_FILL;
559 gdk_gc_set_tile (GdkGC *gc,
562 GdkGCPrivate *private;
565 g_return_if_fail (gc != NULL);
567 private = (GdkGCPrivate*) gc;
572 pixmap = GDK_DRAWABLE_XID (tile);
574 if (private->tile != NULL)
575 gdk_pixmap_unref (private->tile);
576 private->tile = tile;
578 gdk_pixmap_ref (tile);
580 private->values_mask |= GDK_GC_TILE;
582 private->values_mask &= ~GDK_GC_TILE;
586 gdk_gc_set_stipple (GdkGC *gc,
589 GdkGCPrivate *private;
592 g_return_if_fail (gc != NULL);
594 private = (GdkGCPrivate*) gc;
599 pixmap = GDK_DRAWABLE_XID (stipple);
601 if (private->stipple != NULL)
602 gdk_pixmap_unref (private->stipple);
603 private->stipple = stipple;
605 gdk_pixmap_ref (stipple);
607 private->values_mask |= GDK_GC_STIPPLE;
609 private->values_mask &= ~GDK_GC_STIPPLE;
613 gdk_gc_set_ts_origin (GdkGC *gc,
617 GdkGCPrivate *private;
619 g_return_if_fail (gc != NULL);
621 private = (GdkGCPrivate*) gc;
623 private->ts_x_origin = x;
624 private->ts_y_origin = y;
625 private->values_mask |= GDK_GC_TS_X_ORIGIN |GDK_GC_TS_Y_ORIGIN;
629 gdk_gc_set_clip_origin (GdkGC *gc,
633 GdkGCPrivate *private;
635 g_return_if_fail (gc != NULL);
637 private = (GdkGCPrivate*) gc;
639 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_origin: (%d) +%d+%d\n",
642 private->clip_x_origin = x;
643 private->clip_y_origin = y;
644 private->values_mask |= GDK_GC_CLIP_X_ORIGIN |GDK_GC_CLIP_Y_ORIGIN;
648 gdk_gc_set_clip_mask (GdkGC *gc,
651 GdkGCPrivate *private;
654 g_return_if_fail (gc != NULL);
658 if (GDK_DRAWABLE_DESTROYED (mask))
660 xmask = GDK_DRAWABLE_XID (mask);
665 private = (GdkGCPrivate*) gc;
667 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_mask: (%d) %#x\n", private, xmask));
669 if (private->clip_region != NULL)
670 if (!DeleteObject (private->clip_region))
671 g_warning ("gdk_gc_set_clip_mask: DeleteObject failed");
674 private->clip_region = BitmapToRegion (xmask);
677 GetRgnBox (private->clip_region, &rect);
678 GDK_NOTE (MISC, g_print ("...box = %dx%d@+%d+%d\n",
679 rect.right - rect.left, rect.bottom - rect.top,
680 rect.left, rect.top));
683 /* Test code that sets clip region to whole of mask */
686 GetObject (xmask, sizeof (bm), &bm);
687 private->clip_region = CreateRectRgn (0, 0, bm.bmWidth, bm.bmHeight);
690 private->values_mask |= GDK_GC_CLIP_MASK;
694 private->values_mask &= ~GDK_GC_CLIP_MASK;
695 private->clip_region = NULL;
700 gdk_gc_set_clip_rectangle (GdkGC *gc,
701 GdkRectangle *rectangle)
703 GdkGCPrivate *private;
705 g_return_if_fail (gc != NULL);
707 private = (GdkGCPrivate*) gc;
709 if (private->clip_region != NULL)
710 if (!DeleteObject (private->clip_region))
711 g_warning ("gdk_gc_set_clip_rectangle: DeleteObject failed");
715 g_print ("gdk_gc_set_clip_rectangle: (%d) %dx%d@+%d+%d\n",
717 rectangle->width, rectangle->height,
718 rectangle->x, rectangle->y));
719 if ((private->clip_region =
720 CreateRectRgn (rectangle->x, rectangle->y,
721 rectangle->x + rectangle->width,
722 rectangle->y + rectangle->height)) == NULL)
723 g_warning ("gdk_gc_set_clip_rectangle: CreateRectRgn failed");
725 private->values_mask |= GDK_GC_CLIP_MASK;
729 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_rectangle: (%d) None\n",
731 private->clip_region = NULL;
732 private->values_mask &= ~GDK_GC_CLIP_MASK;
734 private->values_mask &= ~(GDK_GC_CLIP_X_ORIGIN |GDK_GC_CLIP_Y_ORIGIN);
738 gdk_gc_set_clip_region (GdkGC *gc,
741 GdkGCPrivate *private;
743 g_return_if_fail (gc != NULL);
745 private = (GdkGCPrivate*) gc;
747 GDK_NOTE (MISC, g_print ("gdk_gc_set_clip_region: (%d) %s\n",
748 private, (region != NULL ? "xxx" : "None")));
750 if (private->clip_region != NULL)
751 if (!DeleteObject (private->clip_region))
752 g_warning ("gdk_gc_set_clip_region: DeleteObject failed");
755 GdkRegionPrivate *region_private;
757 region_private = (GdkRegionPrivate*) region;
758 private->clip_region = CreateRectRgn (1, 1, 0, 0);
759 CombineRgn (private->clip_region, region_private->xregion, NULL, RGN_COPY);
760 private->values_mask |= GDK_GC_CLIP_MASK;
764 private->clip_region = NULL;
765 private->values_mask &= ~GDK_GC_CLIP_MASK;
770 gdk_gc_set_subwindow (GdkGC *gc,
771 GdkSubwindowMode mode)
773 GdkGCPrivate *private;
775 g_return_if_fail (gc != NULL);
777 private = (GdkGCPrivate*) gc;
779 private->subwindow_mode = mode;
780 private->values_mask |= GDK_GC_SUBWINDOW;
784 gdk_gc_set_exposures (GdkGC *gc,
787 GdkGCPrivate *private;
789 g_return_if_fail (gc != NULL);
791 private = (GdkGCPrivate*) gc;
793 private->graphics_exposures = exposures;
794 private->values_mask |= GDK_GC_EXPOSURES;;
798 gdk_gc_set_line_attributes (GdkGC *gc,
800 GdkLineStyle line_style,
801 GdkCapStyle cap_style,
802 GdkJoinStyle join_style)
804 GdkGCPrivate *private;
809 g_return_if_fail (gc != NULL);
811 private = (GdkGCPrivate*) gc;
814 g_print ("gdk_gc_set_line_attributes: (%d) %d %s %s %s\n",
816 (line_style == GDK_LINE_SOLID ? "SOLID" :
817 (line_style == GDK_LINE_ON_OFF_DASH ? "ON_OFF_DASH" :
818 (line_style == GDK_LINE_DOUBLE_DASH ? "DOUBLE_DASH" :
820 (cap_style == GDK_CAP_BUTT ? "BUTT" :
821 (cap_style == GDK_CAP_ROUND ? "ROUND" :
822 (cap_style == GDK_CAP_PROJECTING ? "PROJECTING" :
824 (join_style == GDK_JOIN_MITER ? "MITER" :
825 (join_style == GDK_JOIN_ROUND ? "ROUND" :
826 (join_style == GDK_JOIN_BEVEL ? "BEVEL" :
829 private->pen_width = line_width;
831 /* Mask old style bits away */
832 private->pen_style &= ~(PS_STYLE_MASK|PS_ENDCAP_MASK|PS_JOIN_MASK);
838 private->pen_style |= PS_SOLID; break;
839 case GDK_LINE_ON_OFF_DASH:
840 case GDK_LINE_DOUBLE_DASH: /* ??? */
841 private->pen_style |= PS_DASH; break;
846 case GDK_CAP_NOT_LAST:
850 private->pen_style |= PS_ENDCAP_FLAT; break;
852 private->pen_style |= PS_ENDCAP_ROUND; break;
853 case GDK_CAP_PROJECTING:
854 private->pen_style |= PS_ENDCAP_SQUARE; break;
860 private->pen_style |= PS_JOIN_MITER;
863 private->pen_style |= PS_JOIN_ROUND;
866 private->pen_style |= PS_JOIN_BEVEL;
872 gdk_gc_set_dashes (GdkGC *gc,
877 GdkGCPrivate *private;
879 g_return_if_fail (gc != NULL);
880 g_return_if_fail (dash_list != NULL);
884 private = (GdkGCPrivate *) gc;
886 private->pen_style &= ~(PS_STYLE_MASK);
887 private->pen_style |= PS_DASH;
891 gdk_gc_copy (GdkGC *dst_gc, GdkGC *src_gc)
893 GdkGCPrivate *dst_private, *src_private;
895 src_private = (GdkGCPrivate *) src_gc;
896 dst_private = (GdkGCPrivate *) dst_gc;
898 *dst_private = *src_private;
902 gdk_gc_predraw (GdkDrawablePrivate *drawable_private,
903 GdkGCPrivate *gc_private)
905 GdkColormapPrivate *colormap_private =
906 (GdkColormapPrivate *) drawable_private->colormap;
913 g_assert (gc_private->xgc == NULL);
915 if (drawable_private->window_type == GDK_DRAWABLE_PIXMAP)
917 if ((gc_private->xgc = CreateCompatibleDC (NULL)) == NULL)
918 g_warning ("gdk_gc_predraw: CreateCompatibleDC failed");
920 if ((gc_private->saved_dc = SaveDC (gc_private->xgc)) == 0)
921 g_warning ("gdk_gc_predraw: SaveDC #1 failed");
923 if (SelectObject (gc_private->xgc, drawable_private->xwindow) == NULL)
924 g_warning ("gdk_gc_predraw: SelectObject #1 failed");
928 if ((gc_private->xgc = GetDC (drawable_private->xwindow)) == NULL)
929 g_warning ("gdk_gc_predraw: GetDC failed");
931 if ((gc_private->saved_dc = SaveDC (gc_private->xgc)) == 0)
932 g_warning ("gdk_gc_predraw: SaveDC #2 failed");
935 gc_private->hwnd = drawable_private->xwindow;
937 if (colormap_private == NULL)
939 /* A 1 bit deep bitmap */
944 PALETTEENTRY palPalEntry[2];
946 static HPALETTE hpal = NULL;
950 /* Create a b&w palette */
951 logpal.palVersion = 0x300;
952 logpal.palNumEntries = 2;
953 logpal.palPalEntry[0].peRed =
954 logpal.palPalEntry[0].peGreen =
955 logpal.palPalEntry[0].peBlue = 0x00;
956 logpal.palPalEntry[0].peFlags = 0x00;
957 logpal.palPalEntry[1].peRed =
958 logpal.palPalEntry[1].peGreen =
959 logpal.palPalEntry[1].peBlue = 0xFF;
960 logpal.palPalEntry[1].peFlags = 0x00;
961 if ((hpal = CreatePalette ((LOGPALETTE *) &logpal)) == NULL)
962 g_warning ("gdk_gc_predraw: CreatePalette failed");
964 SelectPalette (gc_private->xgc, hpal, FALSE);
965 RealizePalette (gc_private->xgc);
966 fg = PALETTEINDEX (gc_private->foreground.pixel);
968 else if (colormap_private != NULL
969 && colormap_private->xcolormap->rc_palette)
972 if (SelectPalette (gc_private->xgc,
973 colormap_private->xcolormap->palette, FALSE) == NULL)
974 g_warning ("gdk_gc_predraw: SelectPalette failed");
975 if (TRUE || colormap_private->xcolormap->stale)
977 if ((k = RealizePalette (gc_private->xgc)) == GDI_ERROR)
978 g_warning ("gdk_gc_predraw: RealizePalette failed");
979 colormap_private->xcolormap->stale = FALSE;
982 g_print ("Selected palette %#x for gc %#x, realized %d colors\n",
983 colormap_private->xcolormap->palette, gc_private->xgc, k);
985 fg = PALETTEINDEX (gc_private->foreground.pixel);
989 COLORREF foreground = RGB (gc_private->foreground.red >> 8,
990 gc_private->foreground.green >> 8,
991 gc_private->foreground.blue >> 8);
992 fg = GetNearestColor (gc_private->xgc, foreground);
994 logbrush.lbStyle = BS_SOLID;
995 logbrush.lbColor = fg;
996 if ((hpen = ExtCreatePen (gc_private->pen_style, gc_private->pen_width,
997 &logbrush, 0, NULL)) == NULL)
998 g_warning ("gdk_gc_predraw: CreatePen failed");
1000 if (SelectObject (gc_private->xgc, hpen) == NULL)
1001 g_warning ("gdk_gc_predraw: SelectObject #2 failed");
1003 if (SetTextColor (gc_private->xgc, fg) == CLR_INVALID)
1004 g_warning ("gdk_gc_predraw: SetTextColor failed");
1007 switch (gc_private->fill_style)
1011 GdkPixmap *stipple = gc_private->stipple;
1012 GdkPixmapPrivate *stipple_private = (GdkPixmapPrivate *) stipple;
1013 HBITMAP hbm = stipple_private->xwindow;
1014 if (NULL == (hbr = CreatePatternBrush (hbm)))
1015 g_warning ("gdk_gc_predraw: CreatePatternBrush failed");
1018 SetBrushOrg (gc_private->xgc, gc_private->ts_x_origin,
1019 gc_private->ts_y_origin);
1021 SetBrushOrgEx(gc_private->xgc, gc_private->ts_x_origin,
1022 gc_private->ts_y_origin, NULL);
1028 if ((hbr = CreateSolidBrush (fg)) == NULL)
1029 g_warning ("gdk_gc_predraw: CreateSolidBrush failed");
1033 if ((hbr = CreateSolidBrush (fg)) == NULL)
1034 g_warning ("gdk_gc_predraw: CreateSolidBrush failed");
1036 if (SelectObject (gc_private->xgc, hbr) == NULL)
1037 g_warning ("gdk_gc_predraw: SelectObject #3 failed");
1039 if (gc_private->values_mask & GDK_GC_BACKGROUND)
1041 if (colormap_private == NULL)
1044 bg = PALETTEINDEX (gc_private->background.pixel);
1046 else if (colormap_private != NULL
1047 && colormap_private->xcolormap->rc_palette)
1049 bg = PALETTEINDEX (gc_private->background.pixel);
1053 COLORREF background = RGB (gc_private->background.red >> 8,
1054 gc_private->background.green >> 8,
1055 gc_private->background.blue >> 8);
1056 bg = GetNearestColor (gc_private->xgc, background);
1058 if (SetBkColor (gc_private->xgc, bg) == CLR_INVALID)
1059 g_warning ("gdk_gc_predraw: SetBkColor failed");
1062 if (SetBkMode (gc_private->xgc, TRANSPARENT) == 0)
1063 g_warning ("gdk_gc_predraw: SetBkMode failed");
1065 if (SetTextAlign (gc_private->xgc, TA_BASELINE) == GDI_ERROR)
1066 g_warning ("gdk_gc_predraw: SetTextAlign failed");
1068 if (gc_private->values_mask & GDK_GC_FUNCTION)
1069 if (SetROP2 (gc_private->xgc, gc_private->rop2) == 0)
1070 g_warning ("gdk_gc_predraw: SetROP2 failed");
1072 if (gc_private->values_mask & GDK_GC_CLIP_MASK
1073 && gc_private->clip_region != NULL)
1075 if (gc_private->values_mask & (GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN))
1076 OffsetRgn (gc_private->clip_region,
1077 gc_private->clip_x_origin, gc_private->clip_y_origin);
1078 SelectClipRgn (gc_private->xgc, gc_private->clip_region);
1081 return gc_private->xgc;
1085 gdk_gc_postdraw (GdkDrawablePrivate *drawable_private,
1086 GdkGCPrivate *gc_private)
1090 GdkColormapPrivate *colormap_private =
1091 (GdkColormapPrivate *) drawable_private->colormap;
1093 if ((hpen = GetCurrentObject (gc_private->xgc, OBJ_PEN)) == NULL)
1094 g_warning ("gdk_gc_postdraw: GetCurrentObject #1 failed");
1096 if ((hbr = GetCurrentObject (gc_private->xgc, OBJ_BRUSH)) == NULL)
1097 g_warning ("gdk_gc_postdraw: GetCurrentObject #2 failed");
1099 if (!RestoreDC (gc_private->xgc, gc_private->saved_dc))
1100 g_warning ("gdk_gc_postdraw: RestoreDC failed");
1102 if (colormap_private != NULL
1103 && colormap_private->xcolormap->rc_palette
1104 && colormap_private->xcolormap->stale)
1106 SelectPalette (gc_private->xgc, GetStockObject (DEFAULT_PALETTE), FALSE);
1107 if (!UnrealizeObject (colormap_private->xcolormap->palette))
1108 g_warning ("gdk_gc_postraw: UnrealizeObject failed");
1111 if (drawable_private->window_type == GDK_DRAWABLE_PIXMAP)
1113 if (!DeleteDC (gc_private->xgc))
1114 g_warning ("gdk_gc_postdraw: DeleteDC failed");
1118 ReleaseDC (gc_private->hwnd, gc_private->xgc);
1122 if (!DeleteObject (hpen))
1123 g_warning ("gdk_gc_postdraw: DeleteObject #1 failed");
1126 if (!DeleteObject (hbr))
1127 g_warning ("gdk_gc_postdraw: DeleteObject #2 failed");
1129 gc_private->xgc = NULL;
1132 /* This function originally from Jean-Edouard Lachand-Robert, and
1133 * available at www.codeguru.com. Simplified for our needs, now
1134 * handles just one-bit deep bitmaps (in Window parlance, ie those
1135 * that GDK calls bitmaps (and not pixmaps), with zero pixels being
1140 * BitmapToRegion : Create a region from the "non-transparent" pixels of
1142 * Author : Jean-Edouard Lachand-Robert
1143 * (http://www.geocities.com/Paris/LeftBank/1160/resume.htm), June 1998.
1147 BitmapToRegion (HBITMAP hBmp)
1155 BITMAPINFOHEADER bmiHeader;
1159 RGBQUAD bmiColors[2];
1168 PALETTEENTRY palPalEntry[2];
1170 static HPALETTE bwPalette = NULL;
1183 /* Create a B&W palette */
1184 if (bwPalette == NULL)
1186 /* Create a b&w palette */
1187 logpal.palVersion = 0x300;
1188 logpal.palNumEntries = 2;
1189 logpal.palPalEntry[0].peRed =
1190 logpal.palPalEntry[0].peGreen =
1191 logpal.palPalEntry[0].peBlue = 0;
1192 logpal.palPalEntry[0].peFlags = 0;
1193 logpal.palPalEntry[1].peRed =
1194 logpal.palPalEntry[1].peGreen =
1195 logpal.palPalEntry[1].peBlue = 0xFF;
1196 logpal.palPalEntry[1].peFlags = 0;
1197 if ((bwPalette = CreatePalette ((LOGPALETTE *) &logpal)) == NULL)
1198 g_warning ("BitmapToRegion: CreatePalette failed");
1201 /* Create a memory DC inside which we will scan the bitmap content */
1202 hMemDC = CreateCompatibleDC (NULL);
1205 g_warning ("BitmapToRegion: CreateCompatibleDC #1 failed");
1209 SelectPalette (hMemDC, bwPalette, FALSE);
1210 RealizePalette (hMemDC);
1212 /* Get bitmap size */
1213 GetObject(hBmp, sizeof(bm), &bm);
1215 /* Create a 8 bits depth bitmap and select it into the memory DC */
1216 bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
1217 bmi.bmiHeader.biWidth = bm.bmWidth;
1218 bmi.bmiHeader.biHeight = bm.bmHeight;
1219 bmi.bmiHeader.biPlanes = 1;
1220 bmi.bmiHeader.biBitCount = 8;
1221 bmi.bmiHeader.biCompression = BI_RGB;
1222 bmi.bmiHeader.biSizeImage = 0;
1223 bmi.bmiHeader.biXPelsPerMeter = 0;
1224 bmi.bmiHeader.biYPelsPerMeter = 0;
1225 bmi.bmiHeader.biClrUsed = 2;
1226 bmi.bmiHeader.biClrImportant = 2;
1228 bmi.bmiColors[0] = 0;
1229 bmi.bmiColors[1] = 1;
1230 hbm8 = CreateDIBSection (hMemDC, (BITMAPINFO *)&bmi,
1231 DIB_PAL_COLORS, &pbits8, NULL, 0);
1233 bmi.bmiColors[0].rgbBlue =
1234 bmi.bmiColors[0].rgbGreen =
1235 bmi.bmiColors[0].rgbRed = 0x00;
1236 bmi.bmiColors[0].rgbReserved = 0x00;
1238 bmi.bmiColors[1].rgbBlue =
1239 bmi.bmiColors[1].rgbGreen =
1240 bmi.bmiColors[1].rgbRed = 0xFF;
1241 bmi.bmiColors[0].rgbReserved = 0x00;
1243 hbm8 = CreateDIBSection (hMemDC, (BITMAPINFO *)&bmi,
1244 DIB_RGB_COLORS, &pbits8, NULL, 0);
1248 g_warning ("BitmapToRegion: CreateDIBSection failed");
1253 holdBmp = (HBITMAP) SelectObject (hMemDC, hbm8);
1255 /* Create a DC just to copy the bitmap into the memory DC*/
1256 hDC = CreateCompatibleDC (hMemDC);
1259 g_warning ("BitmapToRegion: CreateCompatibleDC #2 failed");
1260 SelectObject (hMemDC, holdBmp);
1261 DeleteObject (hbm8);
1266 /* Get how many bytes per row we have for the bitmap bits */
1267 GetObject (hbm8, sizeof (bm8), &bm8);
1269 /* Hans Breuer found a fix to the long-standing erroneous behaviour
1270 * on NT 4.0: There seems to be a bug in Win NT 4.0 GDI: scanlines
1271 * in bitmaps are dword aligned on both Win95 and NT. In the case of
1272 * a bitmap with 22 bytes worth of width, GetObject above returns
1273 * with bmWidth == 22. On Win95 bmWidthBytes == 24, as it should be,
1274 * but on NT is it 22. We need to correct this here.
1276 bm8.bmWidthBytes = (((bm8.bmWidthBytes-1)/4)+1)*4; /* dword aligned!! */
1278 /* Copy the bitmap into the memory DC*/
1279 holdBmp2 = (HBITMAP) SelectObject (hDC, hBmp);
1281 if (!BitBlt (hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY))
1283 g_warning ("BitmapToRegion: BitBlt failed");
1284 SelectObject (hDC, holdBmp2);
1285 SelectObject (hMemDC, holdBmp);
1286 DeleteObject (hbm8);
1290 SelectObject (hDC, holdBmp2);
1293 /* For better performances, we will use the ExtCreateRegion()
1294 * function to create the region. This function take a RGNDATA
1295 * structure on entry. We will add rectangles by amount of
1296 * ALLOC_UNIT number in this structure.
1298 #define ALLOC_UNIT 100
1299 maxRects = ALLOC_UNIT;
1301 pData = g_malloc (sizeof (RGNDATAHEADER) + (sizeof (RECT) * maxRects));
1302 pData->rdh.dwSize = sizeof (RGNDATAHEADER);
1303 pData->rdh.iType = RDH_RECTANGLES;
1304 pData->rdh.nCount = pData->rdh.nRgnSize = 0;
1305 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1307 /* Scan each bitmap from bottom to top (the bitmap is inverted vertically)*/
1308 p8 = (BYTE *) pbits8 + (bm8.bmHeight - 1) * bm8.bmWidthBytes;
1309 for (y = 0; y < bm.bmHeight; y++)
1311 /* Scan each bitmap row from left to right*/
1312 for (x = 0; x < bm.bmWidth; x++)
1314 /* Search for a continuous range of "non transparent pixels"*/
1317 while (x < bm.bmWidth)
1320 /* This pixel is "transparent"*/
1329 /* Add the pixels (x0, y) to (x, y+1) as a new rectangle
1332 if (pData->rdh.nCount >= maxRects)
1334 maxRects += ALLOC_UNIT;
1335 pData = g_realloc (pData, sizeof(RGNDATAHEADER)
1336 + (sizeof(RECT) * maxRects));
1338 pr = (RECT *) &pData->Buffer;
1339 SetRect (&pr[pData->rdh.nCount], x0, y, x, y+1);
1340 if (x0 < pData->rdh.rcBound.left)
1341 pData->rdh.rcBound.left = x0;
1342 if (y < pData->rdh.rcBound.top)
1343 pData->rdh.rcBound.top = y;
1344 if (x > pData->rdh.rcBound.right)
1345 pData->rdh.rcBound.right = x;
1346 if (y+1 > pData->rdh.rcBound.bottom)
1347 pData->rdh.rcBound.bottom = y+1;
1348 pData->rdh.nCount++;
1350 /* On Windows98, ExtCreateRegion() may fail if the
1351 * number of rectangles is too large (ie: >
1352 * 4000). Therefore, we have to create the region by
1355 if (pData->rdh.nCount == 2000)
1357 HRGN h = ExtCreateRegion (NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
1360 CombineRgn(hRgn, hRgn, h, RGN_OR);
1365 pData->rdh.nCount = 0;
1366 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1371 /* Go to next row (remember, the bitmap is inverted vertically)*/
1372 p8 -= bm8.bmWidthBytes;
1375 /* Create or extend the region with the remaining rectangles*/
1376 h = ExtCreateRegion (NULL, sizeof (RGNDATAHEADER)
1377 + (sizeof (RECT) * maxRects), pData);
1380 CombineRgn (hRgn, hRgn, h, RGN_OR);
1387 SelectObject(hMemDC, holdBmp);
1388 DeleteObject (hbm8);