1 /* GDK - The GIMP Drawing Kit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 * Copyright (C) 1998-2004 Tor Lillqvist
4 * Copyright (C) 2000-2004 Hans Breuer
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
23 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
24 * file for a list of people on the GTK+ Team. See the ChangeLog
25 * files for a list of changes. These files are distributed with
26 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
29 #define LINE_ATTRIBUTES (GDK_GC_LINE_WIDTH|GDK_GC_LINE_STYLE| \
30 GDK_GC_CAP_STYLE|GDK_GC_JOIN_STYLE)
37 #include "gdkpixmap.h"
38 #include "gdkregion-generic.h"
39 #include "gdkprivate-win32.h"
41 static void gdk_win32_gc_get_values (GdkGC *gc,
43 static void gdk_win32_gc_set_values (GdkGC *gc,
45 GdkGCValuesMask values_mask);
46 static void gdk_win32_gc_set_dashes (GdkGC *gc,
51 static void gdk_gc_win32_class_init (GdkGCWin32Class *klass);
52 static void gdk_gc_win32_finalize (GObject *object);
54 static gpointer parent_class = NULL;
57 _gdk_gc_win32_get_type (void)
59 static GType object_type = 0;
63 static const GTypeInfo object_info =
65 sizeof (GdkGCWin32Class),
67 (GBaseFinalizeFunc) NULL,
68 (GClassInitFunc) gdk_gc_win32_class_init,
69 NULL, /* class_finalize */
70 NULL, /* class_data */
73 (GInstanceInitFunc) NULL,
76 object_type = g_type_register_static (GDK_TYPE_GC,
85 gdk_gc_win32_class_init (GdkGCWin32Class *klass)
87 GObjectClass *object_class = G_OBJECT_CLASS (klass);
88 GdkGCClass *gc_class = GDK_GC_CLASS (klass);
90 parent_class = g_type_class_peek_parent (klass);
92 object_class->finalize = gdk_gc_win32_finalize;
94 gc_class->get_values = gdk_win32_gc_get_values;
95 gc_class->set_values = gdk_win32_gc_set_values;
96 gc_class->set_dashes = gdk_win32_gc_set_dashes;
100 gdk_gc_win32_finalize (GObject *object)
102 GdkGCWin32 *win32_gc = GDK_GC_WIN32 (object);
104 if (win32_gc->hcliprgn != NULL)
105 DeleteObject (win32_gc->hcliprgn);
107 if (win32_gc->values_mask & GDK_GC_FONT)
108 gdk_font_unref (win32_gc->font);
110 g_free (win32_gc->pen_dashes);
112 G_OBJECT_CLASS (parent_class)->finalize (object);
116 fixup_pen (GdkGCWin32 *win32_gc)
118 win32_gc->pen_style = 0;
120 /* First look at GDK width and end cap style, set GDI pen type and
123 if (win32_gc->pen_width == 0 &&
124 win32_gc->cap_style == GDK_CAP_NOT_LAST)
126 /* Use a cosmetic pen, always width 1 */
127 win32_gc->pen_style |= PS_COSMETIC;
129 else if (win32_gc->pen_width <= 1 &&
130 win32_gc->cap_style == GDK_CAP_BUTT)
132 /* For 1 pixel wide lines PS_ENDCAP_ROUND means draw both ends,
133 * even for one pixel length lines. But if we are drawing dashed
134 * lines we can't use PS_ENDCAP_ROUND.
136 if (win32_gc->line_style == GDK_LINE_SOLID)
137 win32_gc->pen_style |= PS_GEOMETRIC | PS_ENDCAP_ROUND;
139 win32_gc->pen_style |= PS_GEOMETRIC | PS_ENDCAP_FLAT;
143 win32_gc->pen_style |= PS_GEOMETRIC;
144 switch (win32_gc->cap_style)
146 /* For non-zero-width lines X11's CapNotLast works like CapButt */
147 case GDK_CAP_NOT_LAST:
149 win32_gc->pen_style |= PS_ENDCAP_FLAT;
152 win32_gc->pen_style |= PS_ENDCAP_ROUND;
154 case GDK_CAP_PROJECTING:
155 win32_gc->pen_style |= PS_ENDCAP_SQUARE;
160 /* Next look at GDK line style, set GDI pen style attribute */
161 switch (win32_gc->line_style)
164 win32_gc->pen_style |= PS_SOLID;
166 case GDK_LINE_ON_OFF_DASH:
167 case GDK_LINE_DOUBLE_DASH:
168 if (win32_gc->pen_dashes == NULL)
170 win32_gc->pen_dashes = g_new (DWORD, 1);
171 win32_gc->pen_dashes[0] = 4;
172 win32_gc->pen_num_dashes = 1;
175 if (!(win32_gc->pen_style & PS_TYPE_MASK) == PS_GEOMETRIC &&
176 win32_gc->pen_dashes[0] == 1 &&
177 (win32_gc->pen_num_dashes == 1 ||
178 (win32_gc->pen_num_dashes == 2 && win32_gc->pen_dashes[0] == 1)))
179 win32_gc->pen_style |= PS_ALTERNATE;
181 win32_gc->pen_style |= PS_USERSTYLE;
185 /* Last, for if the GDI pen is geometric, set the join attribute */
186 if ((win32_gc->pen_style & PS_TYPE_MASK) == PS_GEOMETRIC)
188 switch (win32_gc->join_style)
191 win32_gc->pen_style |= PS_JOIN_MITER;
194 win32_gc->pen_style |= PS_JOIN_ROUND;
197 win32_gc->pen_style |= PS_JOIN_BEVEL;
204 gdk_win32_gc_values_to_win32values (GdkGCValues *values,
205 GdkGCValuesMask mask,
206 GdkGCWin32 *win32_gc)
210 GDK_NOTE (GC, g_print ("{"));
212 if (mask & GDK_GC_FOREGROUND)
214 win32_gc->values_mask |= GDK_GC_FOREGROUND;
215 GDK_NOTE (GC, (g_print ("fg=%.06x",
216 _gdk_gc_get_fg_pixel (&win32_gc->parent_instance)),
220 if (mask & GDK_GC_BACKGROUND)
222 win32_gc->values_mask |= GDK_GC_BACKGROUND;
223 GDK_NOTE (GC, (g_print ("%sbg=%.06x", s,
224 _gdk_gc_get_bg_pixel (&win32_gc->parent_instance)),
228 if ((mask & GDK_GC_FONT) && (values->font->type == GDK_FONT_FONT
229 || values->font->type == GDK_FONT_FONTSET))
231 if (win32_gc->font != NULL)
232 gdk_font_unref (win32_gc->font);
233 win32_gc->font = values->font;
234 if (win32_gc->font != NULL)
236 gdk_font_ref (win32_gc->font);
237 win32_gc->values_mask |= GDK_GC_FONT;
238 GDK_NOTE (GC, (g_print ("%sfont=%p", s, win32_gc->font),
243 win32_gc->values_mask &= ~GDK_GC_FONT;
244 GDK_NOTE (GC, (g_print ("%sfont=NULL", s),
249 if (mask & GDK_GC_FUNCTION)
251 GDK_NOTE (GC, (g_print ("%srop2=", s),
253 switch (values->function)
255 #define CASE(x,y) case GDK_##x: win32_gc->rop2 = R2_##y; GDK_NOTE (GC, g_print (#y)); break
256 CASE (COPY, COPYPEN);
261 CASE (AND_REVERSE, MASKPENNOT);
262 CASE (AND_INVERT, MASKNOTPEN);
265 CASE (EQUIV, NOTXORPEN);
266 CASE (OR_REVERSE, MERGEPENNOT);
267 CASE (COPY_INVERT, NOTCOPYPEN);
268 CASE (OR_INVERT, MERGENOTPEN);
269 CASE (NAND, NOTMASKPEN);
270 CASE (NOR, NOTMERGEPEN);
274 win32_gc->values_mask |= GDK_GC_FUNCTION;
277 if (mask & GDK_GC_FILL)
279 win32_gc->values_mask |= GDK_GC_FILL;
280 GDK_NOTE (GC, (g_print ("%sfill=%s", s,
281 _gdk_win32_fill_style_to_string (values->fill)),
285 if (mask & GDK_GC_TILE)
287 if (values->tile != NULL)
289 win32_gc->values_mask |= GDK_GC_TILE;
291 (g_print ("%stile=%p", s,
292 GDK_PIXMAP_HBITMAP (values->tile)),
297 win32_gc->values_mask &= ~GDK_GC_TILE;
298 GDK_NOTE (GC, (g_print ("%stile=NULL", s),
303 if (mask & GDK_GC_STIPPLE)
305 if (values->stipple != NULL)
307 win32_gc->values_mask |= GDK_GC_STIPPLE;
309 (g_print ("%sstipple=%p", s,
310 GDK_PIXMAP_HBITMAP (values->stipple)),
315 win32_gc->values_mask &= ~GDK_GC_STIPPLE;
316 GDK_NOTE (GC, (g_print ("%sstipple=NULL", s),
321 if (mask & GDK_GC_CLIP_MASK)
323 if (win32_gc->hcliprgn != NULL)
324 DeleteObject (win32_gc->hcliprgn);
326 if (values->clip_mask != NULL)
328 win32_gc->hcliprgn = _gdk_win32_bitmap_to_hrgn (values->clip_mask);
329 win32_gc->values_mask |= GDK_GC_CLIP_MASK;
333 win32_gc->hcliprgn = NULL;
334 win32_gc->values_mask &= ~GDK_GC_CLIP_MASK;
336 GDK_NOTE (GC, (g_print ("%sclip=%p", s, win32_gc->hcliprgn),
340 if (mask & GDK_GC_SUBWINDOW)
342 win32_gc->subwindow_mode = values->subwindow_mode;
343 win32_gc->values_mask |= GDK_GC_SUBWINDOW;
344 GDK_NOTE (GC, (g_print ("%ssubw=%d", s, win32_gc->subwindow_mode),
348 if (mask & GDK_GC_TS_X_ORIGIN)
350 win32_gc->values_mask |= GDK_GC_TS_X_ORIGIN;
351 GDK_NOTE (GC, (g_print ("%sts_x=%d", s, values->ts_x_origin),
355 if (mask & GDK_GC_TS_Y_ORIGIN)
357 win32_gc->values_mask |= GDK_GC_TS_Y_ORIGIN;
358 GDK_NOTE (GC, (g_print ("%sts_y=%d", s, values->ts_y_origin),
362 if (mask & GDK_GC_CLIP_X_ORIGIN)
364 win32_gc->values_mask |= GDK_GC_CLIP_X_ORIGIN;
365 GDK_NOTE (GC, (g_print ("%sclip_x=%d", s, values->clip_x_origin),
369 if (mask & GDK_GC_CLIP_Y_ORIGIN)
371 win32_gc->values_mask |= GDK_GC_CLIP_Y_ORIGIN;
372 GDK_NOTE (GC, (g_print ("%sclip_y=%d", s, values->clip_y_origin),
376 if (mask & GDK_GC_EXPOSURES)
378 win32_gc->graphics_exposures = values->graphics_exposures;
379 win32_gc->values_mask |= GDK_GC_EXPOSURES;
380 GDK_NOTE (GC, (g_print ("%sexp=%d", s, win32_gc->graphics_exposures),
384 if (mask & GDK_GC_LINE_WIDTH)
386 win32_gc->pen_width = values->line_width;
387 win32_gc->values_mask |= GDK_GC_LINE_WIDTH;
388 GDK_NOTE (GC, (g_print ("%spw=%d", s, win32_gc->pen_width),
392 if (mask & GDK_GC_LINE_STYLE)
394 win32_gc->line_style = values->line_style;
395 win32_gc->values_mask |= GDK_GC_LINE_STYLE;
398 if (mask & GDK_GC_CAP_STYLE)
400 win32_gc->cap_style = values->cap_style;
401 win32_gc->values_mask |= GDK_GC_CAP_STYLE;
404 if (mask & GDK_GC_JOIN_STYLE)
406 win32_gc->join_style = values->join_style;
407 win32_gc->values_mask |= GDK_GC_JOIN_STYLE;
410 if (mask & (GDK_GC_LINE_WIDTH|GDK_GC_LINE_STYLE|GDK_GC_CAP_STYLE|GDK_GC_JOIN_STYLE))
412 fixup_pen (win32_gc);
413 GDK_NOTE (GC, (g_print ("%sps|=PS_STYLE_%s|PS_ENDCAP_%s|PS_JOIN_%s", s,
414 _gdk_win32_psstyle_to_string (win32_gc->pen_style),
415 _gdk_win32_psendcap_to_string (win32_gc->pen_style),
416 _gdk_win32_psjoin_to_string (win32_gc->pen_style)),
420 GDK_NOTE (GC, g_print ("} mask=(%s)", _gdk_win32_gcvalues_mask_to_string (win32_gc->values_mask)));
424 _gdk_win32_gc_new (GdkDrawable *drawable,
426 GdkGCValuesMask values_mask)
429 GdkGCWin32 *win32_gc;
431 /* NOTICE that the drawable here has to be the impl drawable,
432 * not the publically-visible drawables.
434 g_return_val_if_fail (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable), NULL);
436 gc = g_object_new (_gdk_gc_win32_get_type (), NULL);
437 win32_gc = GDK_GC_WIN32 (gc);
439 _gdk_gc_init (gc, drawable, values, values_mask);
441 win32_gc->hcliprgn = NULL;
443 win32_gc->font = NULL;
444 win32_gc->rop2 = R2_COPYPEN;
445 win32_gc->subwindow_mode = GDK_CLIP_BY_CHILDREN;
446 win32_gc->graphics_exposures = TRUE;
447 win32_gc->pen_width = 0;
448 /* Don't get confused by the PS_ENDCAP_ROUND. For narrow GDI pens
449 * (width == 1), PS_GEOMETRIC|PS_ENDCAP_ROUND works like X11's
452 win32_gc->pen_style = PS_GEOMETRIC|PS_ENDCAP_ROUND|PS_JOIN_MITER;
453 win32_gc->line_style = GDK_LINE_SOLID;
454 win32_gc->cap_style = GDK_CAP_BUTT;
455 win32_gc->join_style = GDK_JOIN_MITER;
456 win32_gc->pen_dashes = NULL;
457 win32_gc->pen_num_dashes = 0;
458 win32_gc->pen_dash_offset = 0;
459 win32_gc->pen_hbrbg = NULL;
461 win32_gc->values_mask = GDK_GC_FUNCTION | GDK_GC_FILL;
463 GDK_NOTE (GC, g_print ("_gdk_win32_gc_new: %p: ", win32_gc));
464 gdk_win32_gc_values_to_win32values (values, values_mask, win32_gc);
465 GDK_NOTE (GC, g_print ("\n"));
467 win32_gc->hdc = NULL;
473 gdk_win32_gc_get_values (GdkGC *gc,
476 GdkGCWin32 *win32_gc = GDK_GC_WIN32 (gc);
478 values->foreground.pixel = _gdk_gc_get_fg_pixel (gc);
479 values->background.pixel = _gdk_gc_get_bg_pixel (gc);
480 values->font = win32_gc->font;
482 switch (win32_gc->rop2)
485 values->function = GDK_COPY; break;
487 values->function = GDK_INVERT; break;
489 values->function = GDK_XOR; break;
491 values->function = GDK_CLEAR; break;
493 values->function = GDK_AND; break;
495 values->function = GDK_AND_REVERSE; break;
497 values->function = GDK_AND_INVERT; break;
499 values->function = GDK_NOOP; break;
501 values->function = GDK_OR; break;
503 values->function = GDK_EQUIV; break;
505 values->function = GDK_OR_REVERSE; break;
507 values->function = GDK_COPY_INVERT; break;
509 values->function = GDK_OR_INVERT; break;
511 values->function = GDK_NAND; break;
513 values->function = GDK_NOR; break;
515 values->function = GDK_SET; break;
518 values->fill = _gdk_gc_get_fill (gc);
519 values->tile = _gdk_gc_get_tile (gc);
520 values->stipple = _gdk_gc_get_stipple (gc);
522 /* Also the X11 backend always returns a NULL clip_mask */
523 values->clip_mask = NULL;
525 values->subwindow_mode = win32_gc->subwindow_mode;
526 values->ts_x_origin = win32_gc->parent_instance.ts_x_origin;
527 values->ts_y_origin = win32_gc->parent_instance.ts_y_origin;
528 values->clip_x_origin = win32_gc->parent_instance.clip_x_origin;
529 values->clip_y_origin = win32_gc->parent_instance.clip_y_origin;
530 values->graphics_exposures = win32_gc->graphics_exposures;
531 values->line_width = win32_gc->pen_width;
533 values->line_style = win32_gc->line_style;
534 values->cap_style = win32_gc->cap_style;
535 values->join_style = win32_gc->join_style;
539 gdk_win32_gc_set_values (GdkGC *gc,
541 GdkGCValuesMask mask)
543 g_return_if_fail (GDK_IS_GC (gc));
545 GDK_NOTE (GC, g_print ("gdk_win32_gc_set_values: %p: ", GDK_GC_WIN32 (gc)));
546 gdk_win32_gc_values_to_win32values (values, mask, GDK_GC_WIN32 (gc));
547 GDK_NOTE (GC, g_print ("\n"));
551 gdk_win32_gc_set_dashes (GdkGC *gc,
556 GdkGCWin32 *win32_gc;
559 g_return_if_fail (GDK_IS_GC (gc));
560 g_return_if_fail (dash_list != NULL);
562 win32_gc = GDK_GC_WIN32 (gc);
564 win32_gc->pen_num_dashes = n;
565 g_free (win32_gc->pen_dashes);
566 win32_gc->pen_dashes = g_new (DWORD, n);
567 for (i = 0; i < n; i++)
568 win32_gc->pen_dashes[i] = dash_list[i];
569 win32_gc->pen_dash_offset = dash_offset;
570 fixup_pen (win32_gc);
574 _gdk_windowing_gc_set_clip_region (GdkGC *gc,
575 const GdkRegion *region)
577 GdkGCWin32 *win32_gc = GDK_GC_WIN32 (gc);
579 if (win32_gc->hcliprgn)
580 DeleteObject (win32_gc->hcliprgn);
584 GDK_NOTE (GC, g_print ("gdk_gc_set_clip_region: %p: %s\n",
586 _gdk_win32_gdkregion_to_string (region)));
588 win32_gc->hcliprgn = _gdk_win32_gdkregion_to_hrgn (region, 0, 0);
589 win32_gc->values_mask |= GDK_GC_CLIP_MASK;
593 GDK_NOTE (GC, g_print ("gdk_gc_set_clip_region: NULL\n"));
595 win32_gc->hcliprgn = NULL;
596 win32_gc->values_mask &= ~GDK_GC_CLIP_MASK;
599 gc->clip_x_origin = 0;
600 gc->clip_y_origin = 0;
602 win32_gc->values_mask &= ~(GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN);
606 _gdk_windowing_gc_copy (GdkGC *dst_gc,
609 GdkGCWin32 *dst_win32_gc = GDK_GC_WIN32 (dst_gc);
610 GdkGCWin32 *src_win32_gc = GDK_GC_WIN32 (src_gc);
612 GDK_NOTE (GC, g_print ("gdk_gc_copy: %p := %p\n", dst_win32_gc, src_win32_gc));
614 if (dst_win32_gc->hcliprgn != NULL)
615 DeleteObject (dst_win32_gc->hcliprgn);
617 if (dst_win32_gc->font != NULL)
618 gdk_font_unref (dst_win32_gc->font);
620 g_free (dst_win32_gc->pen_dashes);
622 dst_win32_gc->hcliprgn = src_win32_gc->hcliprgn;
623 if (dst_win32_gc->hcliprgn)
625 /* create a new region, to copy to */
626 dst_win32_gc->hcliprgn = CreateRectRgn (0,0,1,1);
627 /* overwrite from source */
628 CombineRgn (dst_win32_gc->hcliprgn, src_win32_gc->hcliprgn,
632 dst_win32_gc->values_mask = src_win32_gc->values_mask;
633 dst_win32_gc->font = src_win32_gc->font;
634 if (dst_win32_gc->font != NULL)
635 gdk_font_ref (dst_win32_gc->font);
637 dst_win32_gc->rop2 = src_win32_gc->rop2;
639 dst_win32_gc->subwindow_mode = src_win32_gc->subwindow_mode;
640 dst_win32_gc->graphics_exposures = src_win32_gc->graphics_exposures;
641 dst_win32_gc->pen_width = src_win32_gc->pen_width;
642 dst_win32_gc->pen_style = src_win32_gc->pen_style;
643 dst_win32_gc->line_style = src_win32_gc->line_style;
644 dst_win32_gc->cap_style = src_win32_gc->cap_style;
645 dst_win32_gc->join_style = src_win32_gc->join_style;
646 if (src_win32_gc->pen_dashes)
647 dst_win32_gc->pen_dashes = g_memdup (src_win32_gc->pen_dashes,
648 sizeof (DWORD) * src_win32_gc->pen_num_dashes);
650 dst_win32_gc->pen_dashes = NULL;
651 dst_win32_gc->pen_num_dashes = src_win32_gc->pen_num_dashes;
652 dst_win32_gc->pen_dash_offset = src_win32_gc->pen_dash_offset;
655 dst_win32_gc->hdc = NULL;
656 dst_win32_gc->saved_dc = FALSE;
657 dst_win32_gc->holdpal = NULL;
658 dst_win32_gc->pen_hbrbg = NULL;
662 gdk_gc_get_screen (GdkGC *gc)
664 g_return_val_if_fail (GDK_IS_GC_WIN32 (gc), NULL);
669 static guint bitmask[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 };
672 _gdk_win32_colormap_color (GdkColormap *colormap,
675 const GdkVisual *visual;
676 GdkColormapPrivateWin32 *colormap_private;
679 if (colormap == NULL)
680 return DIBINDEX (pixel & 1);
682 colormap_private = GDK_WIN32_COLORMAP_DATA (colormap);
684 g_assert (colormap_private != NULL);
686 visual = colormap->visual;
687 switch (visual->type)
689 case GDK_VISUAL_GRAYSCALE:
690 case GDK_VISUAL_PSEUDO_COLOR:
691 case GDK_VISUAL_STATIC_COLOR:
692 return PALETTEINDEX (pixel);
694 case GDK_VISUAL_TRUE_COLOR:
695 r = (pixel & visual->red_mask) >> visual->red_shift;
696 r = (r * 255) / bitmask[visual->red_prec];
697 g = (pixel & visual->green_mask) >> visual->green_shift;
698 g = (g * 255) / bitmask[visual->green_prec];
699 b = (pixel & visual->blue_mask) >> visual->blue_shift;
700 b = (b * 255) / bitmask[visual->blue_prec];
701 return RGB (r, g, b);
704 g_assert_not_reached ();
711 GdkColormap *colormap)
713 GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc;
714 GdkColormapPrivateWin32 *colormap_private;
719 (colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR ||
720 colormap->visual->type == GDK_VISUAL_STATIC_COLOR))
722 colormap_private = GDK_WIN32_COLORMAP_DATA (colormap);
724 g_assert (colormap_private != NULL);
726 if (!(win32_gc->holdpal = SelectPalette (win32_gc->hdc, colormap_private->hpal, FALSE)))
727 WIN32_GDI_FAILED ("SelectPalette"), ok = FALSE;
728 else if ((k = RealizePalette (win32_gc->hdc)) == GDI_ERROR)
729 WIN32_GDI_FAILED ("RealizePalette"), ok = FALSE;
731 GDK_NOTE (COLORMAP, g_print ("predraw: realized %p: %d colors\n",
732 colormap_private->hpal, k));
738 static GdkDrawableImplWin32 *
739 get_impl_drawable (GdkDrawable *drawable)
741 if (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable))
742 return GDK_DRAWABLE_IMPL_WIN32(drawable);
743 else if (GDK_IS_WINDOW (drawable))
744 return GDK_DRAWABLE_IMPL_WIN32 ((GDK_WINDOW_OBJECT (drawable))->impl);
745 else if (GDK_IS_PIXMAP (drawable))
746 return GDK_DRAWABLE_IMPL_WIN32 ((GDK_PIXMAP_OBJECT (drawable))->impl);
748 g_assert_not_reached ();
755 * @drawable: destination #GdkDrawable
756 * @gc: #GdkGC to use for drawing on @drawable
757 * @usage: mask indicating what properties needs to be set up
759 * Allocates a Windows device context handle (HDC) for drawing into
760 * @drawable, and sets it up appropriately according to @usage.
762 * Each #GdkGC can at one time have only one HDC associated with it.
764 * The following flags in @mask are handled:
766 * If %GDK_GC_FOREGROUND is set in @mask, a solid brush of the
767 * foreground color in @gc is selected into the HDC. The text color of
768 * the HDC is also set. If the @drawable has a palette (256-color
769 * mode), the palette is selected and realized.
771 * If any of the line attribute flags (%GDK_GC_LINE_WIDTH,
772 * %GDK_GC_LINE_STYLE, %GDK_GC_CAP_STYLE and %GDK_GC_JOIN_STYLE) is
773 * set in @mask, a solid pen of the foreground color and appropriate
774 * width and stule is created and selected into the HDC. Note that the
775 * dash properties are not completely implemented.
777 * If the %GDK_GC_FONT flag is set, the background mix mode is set to
778 * %TRANSPARENT. and the text alignment is set to
779 * %TA_BASELINE|%TA_LEFT. Note that no font gets selected into the HDC
782 * Some things are done regardless of @mask: If the function in @gc is
783 * any other than %GDK_COPY, the raster operation of the HDC is
784 * set. If @gc has a clip mask, the clip region of the HDC is set.
786 * Note that the fill style, tile, stipple, and tile and stipple
787 * origins in the @gc are ignored by this function. (In general, tiles
788 * and stipples can't be implemented directly on Win32; you need to do
789 * multiple pass drawing and blitting to implement tiles or
790 * stipples. GDK does just that when you call the GDK drawing
791 * functions with a GC that asks for tiles or stipples.)
793 * When the HDC is no longer used, it should be released by calling
794 * <function>gdk_win32_hdc_release()</function> with the same
797 * If you modify the HDC by calling <function>SelectObject</function>
798 * you should undo those modifications before calling
799 * <function>gdk_win32_hdc_release()</function>.
801 * Return value: The HDC.
804 gdk_win32_hdc_get (GdkDrawable *drawable,
806 GdkGCValuesMask usage)
808 GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc;
809 GdkDrawableImplWin32 *impl = NULL;
811 COLORREF fg = RGB (0, 0, 0), bg = RGB (255, 255, 255);
815 g_assert (win32_gc->hdc == NULL);
817 impl = get_impl_drawable (drawable);
819 win32_gc->hdc = _gdk_win32_drawable_acquire_dc (GDK_DRAWABLE (impl));
820 ok = win32_gc->hdc != NULL;
822 if (ok && (win32_gc->saved_dc = SaveDC (win32_gc->hdc)) == 0)
823 WIN32_GDI_FAILED ("SaveDC"), ok = FALSE;
825 if (ok && (usage & (GDK_GC_FOREGROUND | GDK_GC_BACKGROUND)))
826 ok = predraw (gc, impl->colormap);
828 if (ok && (usage & GDK_GC_FOREGROUND))
830 fg = _gdk_win32_colormap_color (impl->colormap, _gdk_gc_get_fg_pixel (gc));
831 if ((hbr = CreateSolidBrush (fg)) == NULL)
832 WIN32_GDI_FAILED ("CreateSolidBrush"), ok = FALSE;
834 if (ok && SelectObject (win32_gc->hdc, hbr) == NULL)
835 WIN32_GDI_FAILED ("SelectObject"), ok = FALSE;
837 if (ok && SetTextColor (win32_gc->hdc, fg) == CLR_INVALID)
838 WIN32_GDI_FAILED ("SetTextColor"), ok = FALSE;
841 if (ok && (usage & LINE_ATTRIBUTES))
843 /* For drawing GDK_LINE_DOUBLE_DASH */
844 if ((usage & GDK_GC_BACKGROUND) && win32_gc->line_style == GDK_LINE_DOUBLE_DASH)
846 bg = _gdk_win32_colormap_color (impl->colormap, _gdk_gc_get_bg_pixel (gc));
847 if ((win32_gc->pen_hbrbg = CreateSolidBrush (bg)) == NULL)
848 WIN32_GDI_FAILED ("CreateSolidBrush"), ok = FALSE;
854 DWORD style_count = 0;
855 const DWORD *style = NULL;
857 /* Create and select pen */
858 logbrush.lbStyle = BS_SOLID;
859 logbrush.lbColor = fg;
860 logbrush.lbHatch = 0;
862 if ((win32_gc->pen_style & PS_STYLE_MASK) == PS_USERSTYLE)
864 style_count = win32_gc->pen_num_dashes;
865 style = win32_gc->pen_dashes;
868 if ((hpen = ExtCreatePen (win32_gc->pen_style,
869 MAX (win32_gc->pen_width, 1),
871 style_count, style)) == NULL)
872 WIN32_GDI_FAILED ("ExtCreatePen"), ok = FALSE;
874 if (ok && SelectObject (win32_gc->hdc, hpen) == NULL)
875 WIN32_GDI_FAILED ("SelectObject"), ok = FALSE;
879 if (ok && (usage & GDK_GC_FONT))
881 if (SetBkMode (win32_gc->hdc, TRANSPARENT) == 0)
882 WIN32_GDI_FAILED ("SetBkMode"), ok = FALSE;
884 if (ok && SetTextAlign (win32_gc->hdc, TA_BASELINE|TA_LEFT|TA_NOUPDATECP) == GDI_ERROR)
885 WIN32_GDI_FAILED ("SetTextAlign"), ok = FALSE;
888 if (ok && win32_gc->rop2 != R2_COPYPEN)
889 if (SetROP2 (win32_gc->hdc, win32_gc->rop2) == 0)
890 WIN32_GDI_FAILED ("SetROP2"), ok = FALSE;
893 (win32_gc->values_mask & GDK_GC_CLIP_MASK) &&
894 win32_gc->hcliprgn != NULL)
896 if (SelectClipRgn (win32_gc->hdc, win32_gc->hcliprgn) == ERROR)
897 WIN32_API_FAILED ("SelectClipRgn"), ok = FALSE;
899 if (ok && win32_gc->values_mask & (GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN) &&
900 OffsetClipRgn (win32_gc->hdc,
901 win32_gc->values_mask & GDK_GC_CLIP_X_ORIGIN ? gc->clip_x_origin : 0,
902 win32_gc->values_mask & GDK_GC_CLIP_Y_ORIGIN ? gc->clip_y_origin : 0) == ERROR)
903 WIN32_API_FAILED ("OffsetClipRgn"), ok = FALSE;
906 SelectClipRgn (win32_gc->hdc, NULL);
908 GDK_NOTE (GC, (g_print ("gdk_win32_hdc_get: %p (%s): ",
909 win32_gc, _gdk_win32_gcvalues_mask_to_string (usage)),
910 _gdk_win32_print_dc (win32_gc->hdc)));
912 return win32_gc->hdc;
916 * gdk_win32_hdc_release:
917 * @drawable: destination #GdkDrawable
918 * @gc: #GdkGC to use for drawing on @drawable
919 * @usage: mask indicating what properties were set up
921 * This function deallocates the Windows device context allocated by
922 * <funcion>gdk_win32_hdc_get()</function>. It should be called with
923 * the same parameters.
926 gdk_win32_hdc_release (GdkDrawable *drawable,
928 GdkGCValuesMask usage)
930 GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc;
931 GdkDrawableImplWin32 *impl = NULL;
935 GDK_NOTE (GC, g_print ("gdk_win32_hdc_release: %p: %p (%s)\n",
936 win32_gc, win32_gc->hdc,
937 _gdk_win32_gcvalues_mask_to_string (usage)));
939 impl = get_impl_drawable (drawable);
941 if (win32_gc->holdpal != NULL)
945 if (!SelectPalette (win32_gc->hdc, win32_gc->holdpal, FALSE))
946 WIN32_GDI_FAILED ("SelectPalette");
947 else if ((k = RealizePalette (win32_gc->hdc)) == GDI_ERROR)
948 WIN32_GDI_FAILED ("RealizePalette");
950 GDK_NOTE (COLORMAP, g_print ("gdk_win32_hdc_release: realized %p: %d colors\n",
951 win32_gc->holdpal, k));
952 win32_gc->holdpal = NULL;
955 if (usage & LINE_ATTRIBUTES)
956 if ((hpen = GetCurrentObject (win32_gc->hdc, OBJ_PEN)) == NULL)
957 WIN32_GDI_FAILED ("GetCurrentObject");
959 if (usage & GDK_GC_FOREGROUND)
960 if ((hbr = GetCurrentObject (win32_gc->hdc, OBJ_BRUSH)) == NULL)
961 WIN32_GDI_FAILED ("GetCurrentObject");
963 GDI_CALL (RestoreDC, (win32_gc->hdc, win32_gc->saved_dc));
965 _gdk_win32_drawable_release_dc (GDK_DRAWABLE (impl));
968 GDI_CALL (DeleteObject, (hpen));
971 GDI_CALL (DeleteObject, (hbr));
973 if (win32_gc->pen_hbrbg != NULL)
974 GDI_CALL (DeleteObject, (win32_gc->pen_hbrbg));
976 win32_gc->hdc = NULL;
979 /* This function originally from Jean-Edouard Lachand-Robert, and
980 * available at www.codeguru.com. Simplified for our needs, not sure
981 * how much of the original code left any longer. Now handles just
982 * one-bit deep bitmaps (in Window parlance, ie those that GDK calls
983 * bitmaps (and not pixmaps), with zero pixels being transparent.
986 /* _gdk_win32_bitmap_to_hrgn : Create a region from the
987 * "non-transparent" pixels of a bitmap.
991 _gdk_win32_bitmap_to_hrgn (GdkPixmap *pixmap)
998 gint width, height, bpl;
1002 g_assert (GDK_PIXMAP_OBJECT(pixmap)->depth == 1);
1004 bits = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->bits;
1005 width = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->width;
1006 height = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->height;
1007 bpl = ((width - 1)/32 + 1)*4;
1009 /* For better performances, we will use the ExtCreateRegion()
1010 * function to create the region. This function take a RGNDATA
1011 * structure on entry. We will add rectangles by amount of
1012 * ALLOC_UNIT number in this structure.
1014 #define ALLOC_UNIT 100
1015 maxRects = ALLOC_UNIT;
1017 pData = g_malloc (sizeof (RGNDATAHEADER) + (sizeof (RECT) * maxRects));
1018 pData->rdh.dwSize = sizeof (RGNDATAHEADER);
1019 pData->rdh.iType = RDH_RECTANGLES;
1020 pData->rdh.nCount = pData->rdh.nRgnSize = 0;
1021 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1023 for (y = 0; y < height; y++)
1025 /* Scan each bitmap row from left to right*/
1026 p = (guchar *) bits + y * bpl;
1027 for (x = 0; x < width; x++)
1029 /* Search for a continuous range of "non transparent pixels"*/
1033 if ((((p[x/8])>>(7-(x%8)))&1) == 0)
1034 /* This pixel is "transparent"*/
1042 /* Add the pixels (x0, y) to (x, y+1) as a new rectangle
1045 if (pData->rdh.nCount >= maxRects)
1047 maxRects += ALLOC_UNIT;
1048 pData = g_realloc (pData, sizeof(RGNDATAHEADER)
1049 + (sizeof(RECT) * maxRects));
1051 pr = (RECT *) &pData->Buffer;
1052 SetRect (&pr[pData->rdh.nCount], x0, y, x, y+1);
1053 if (x0 < pData->rdh.rcBound.left)
1054 pData->rdh.rcBound.left = x0;
1055 if (y < pData->rdh.rcBound.top)
1056 pData->rdh.rcBound.top = y;
1057 if (x > pData->rdh.rcBound.right)
1058 pData->rdh.rcBound.right = x;
1059 if (y+1 > pData->rdh.rcBound.bottom)
1060 pData->rdh.rcBound.bottom = y+1;
1061 pData->rdh.nCount++;
1063 /* On Windows98, ExtCreateRegion() may fail if the
1064 * number of rectangles is too large (ie: >
1065 * 4000). Therefore, we have to create the region by
1068 if (pData->rdh.nCount == 2000)
1070 HRGN h = ExtCreateRegion (NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
1073 CombineRgn(hRgn, hRgn, h, RGN_OR);
1078 pData->rdh.nCount = 0;
1079 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1085 /* Create or extend the region with the remaining rectangles*/
1086 h = ExtCreateRegion (NULL, sizeof (RGNDATAHEADER)
1087 + (sizeof (RECT) * maxRects), pData);
1090 CombineRgn (hRgn, hRgn, h, RGN_OR);
1103 _gdk_win32_gdkregion_to_hrgn (const GdkRegion *region,
1110 GdkRegionBox *boxes = region->rects;
1112 sizeof (RGNDATAHEADER) + (sizeof (RECT) * region->numRects);
1115 rgndata = g_malloc (nbytes);
1116 rgndata->rdh.dwSize = sizeof (RGNDATAHEADER);
1117 rgndata->rdh.iType = RDH_RECTANGLES;
1118 rgndata->rdh.nCount = rgndata->rdh.nRgnSize = 0;
1119 SetRect (&rgndata->rdh.rcBound,
1120 G_MAXLONG, G_MAXLONG, G_MINLONG, G_MINLONG);
1122 for (i = 0; i < region->numRects; i++)
1124 rect = ((RECT *) rgndata->Buffer) + rgndata->rdh.nCount++;
1126 rect->left = boxes[i].x1 + x_origin;
1127 rect->right = boxes[i].x2 + x_origin;
1128 rect->top = boxes[i].y1 + y_origin;
1129 rect->bottom = boxes[i].y2 + y_origin;
1131 if (rect->left < rgndata->rdh.rcBound.left)
1132 rgndata->rdh.rcBound.left = rect->left;
1133 if (rect->right > rgndata->rdh.rcBound.right)
1134 rgndata->rdh.rcBound.right = rect->right;
1135 if (rect->top < rgndata->rdh.rcBound.top)
1136 rgndata->rdh.rcBound.top = rect->top;
1137 if (rect->bottom > rgndata->rdh.rcBound.bottom)
1138 rgndata->rdh.rcBound.bottom = rect->bottom;
1140 if ((hrgn = ExtCreateRegion (NULL, nbytes, rgndata)) == NULL)
1141 WIN32_API_FAILED ("ExtCreateRegion");