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 if (win32_gc->pen_dashes)
111 g_free (win32_gc->pen_dashes);
113 G_OBJECT_CLASS (parent_class)->finalize (object);
117 fixup_pen (GdkGCWin32 *win32_gc)
119 win32_gc->pen_style = 0;
121 /* First look at GDK width and end cap style, set GDI pen type and
124 if (win32_gc->pen_width == 0 &&
125 win32_gc->cap_style == GDK_CAP_NOT_LAST)
127 /* Use a cosmetic pen, always width 1 */
128 win32_gc->pen_style |= PS_COSMETIC;
130 else if (win32_gc->pen_width <= 1 &&
131 win32_gc->cap_style == GDK_CAP_BUTT)
133 /* For 1 pixel wide lines PS_ENDCAP_ROUND means draw both ends,
134 * even for one pixel length lines. But if we are drawing dashed
135 * lines we can't use PS_ENDCAP_ROUND.
137 if (win32_gc->line_style == GDK_LINE_SOLID)
138 win32_gc->pen_style |= PS_GEOMETRIC | PS_ENDCAP_ROUND;
140 win32_gc->pen_style |= PS_GEOMETRIC | PS_ENDCAP_FLAT;
144 win32_gc->pen_style |= PS_GEOMETRIC;
145 switch (win32_gc->cap_style)
147 /* For non-zero-width lines X11's CapNotLast works like CapButt */
148 case GDK_CAP_NOT_LAST:
150 win32_gc->pen_style |= PS_ENDCAP_FLAT;
153 win32_gc->pen_style |= PS_ENDCAP_ROUND;
155 case GDK_CAP_PROJECTING:
156 win32_gc->pen_style |= PS_ENDCAP_SQUARE;
161 /* Next look at GDK line style, set GDI pen style attribute */
162 switch (win32_gc->line_style)
165 win32_gc->pen_style |= PS_SOLID;
167 case GDK_LINE_ON_OFF_DASH:
168 case GDK_LINE_DOUBLE_DASH:
169 if (win32_gc->pen_dashes == NULL)
171 win32_gc->pen_dashes = g_new (DWORD, 1);
172 win32_gc->pen_dashes[0] = 4;
173 win32_gc->pen_num_dashes = 1;
175 if (G_WIN32_IS_NT_BASED ())
177 if (!(win32_gc->pen_style & PS_TYPE_MASK) == PS_GEOMETRIC &&
178 win32_gc->pen_dashes[0] == 1 &&
179 (win32_gc->pen_num_dashes == 1 ||
180 (win32_gc->pen_num_dashes == 2 && win32_gc->pen_dashes[0] == 1)))
181 win32_gc->pen_style |= PS_ALTERNATE;
183 win32_gc->pen_style |= PS_USERSTYLE;
187 /* Render "short" on-off dashes drawn with R2_COPYPEN and a
188 * cosmetic pen using PS_DOT
190 if (win32_gc->line_style == GDK_LINE_ON_OFF_DASH &&
191 win32_gc->rop2 == R2_COPYPEN &&
192 (win32_gc->pen_style & PS_TYPE_MASK) == PS_COSMETIC &&
193 win32_gc->pen_dashes[0] <= 2 &&
194 (win32_gc->pen_num_dashes == 1 ||
195 (win32_gc->pen_num_dashes == 2 && win32_gc->pen_dashes[1] <= 2)))
196 win32_gc->pen_style |= PS_DOT;
198 /* Otherwise render opaque lines solid, horizontal or
199 * vertical ones will be dashed manually, see
200 * gdkdrawable-win32.c.
202 win32_gc->pen_style |= PS_SOLID;
207 /* Last, for if the GDI pen is geometric, set the join attribute */
208 if ((win32_gc->pen_style & PS_TYPE_MASK) == PS_GEOMETRIC)
210 switch (win32_gc->join_style)
213 win32_gc->pen_style |= PS_JOIN_MITER;
216 win32_gc->pen_style |= PS_JOIN_ROUND;
219 win32_gc->pen_style |= PS_JOIN_BEVEL;
226 gdk_win32_gc_values_to_win32values (GdkGCValues *values,
227 GdkGCValuesMask mask,
228 GdkGCWin32 *win32_gc)
232 GDK_NOTE (GC, g_print ("{"));
234 if (mask & GDK_GC_FOREGROUND)
236 win32_gc->values_mask |= GDK_GC_FOREGROUND;
237 GDK_NOTE (GC, (g_print ("fg=%.06x",
238 _gdk_gc_get_fg_pixel (&win32_gc->parent_instance)),
242 if (mask & GDK_GC_BACKGROUND)
244 win32_gc->values_mask |= GDK_GC_BACKGROUND;
245 GDK_NOTE (GC, (g_print ("%sbg=%.06x", s,
246 _gdk_gc_get_bg_pixel (&win32_gc->parent_instance)),
250 if ((mask & GDK_GC_FONT) && (values->font->type == GDK_FONT_FONT
251 || values->font->type == GDK_FONT_FONTSET))
253 if (win32_gc->font != NULL)
254 gdk_font_unref (win32_gc->font);
255 win32_gc->font = values->font;
256 if (win32_gc->font != NULL)
258 gdk_font_ref (win32_gc->font);
259 win32_gc->values_mask |= GDK_GC_FONT;
260 GDK_NOTE (GC, (g_print ("%sfont=%p", s, win32_gc->font),
265 win32_gc->values_mask &= ~GDK_GC_FONT;
266 GDK_NOTE (GC, (g_print ("%sfont=NULL", s),
271 if (mask & GDK_GC_FUNCTION)
273 GDK_NOTE (GC, (g_print ("%srop2=", s),
275 switch (values->function)
277 #define CASE(x,y) case GDK_##x: win32_gc->rop2 = R2_##y; GDK_NOTE (GC, g_print (#y)); break
278 CASE (COPY, COPYPEN);
283 CASE (AND_REVERSE, MASKPENNOT);
284 CASE (AND_INVERT, MASKNOTPEN);
287 CASE (EQUIV, NOTXORPEN);
288 CASE (OR_REVERSE, MERGEPENNOT);
289 CASE (COPY_INVERT, NOTCOPYPEN);
290 CASE (OR_INVERT, MERGENOTPEN);
291 CASE (NAND, NOTMASKPEN);
292 CASE (NOR, NOTMERGEPEN);
296 win32_gc->values_mask |= GDK_GC_FUNCTION;
299 if (mask & GDK_GC_FILL)
301 win32_gc->values_mask |= GDK_GC_FILL;
302 GDK_NOTE (GC, (g_print ("%sfill=%s", s,
303 _gdk_win32_fill_style_to_string (values->fill)),
307 if (mask & GDK_GC_TILE)
309 if (values->tile != NULL)
311 win32_gc->values_mask |= GDK_GC_TILE;
313 (g_print ("%stile=%p", s,
314 GDK_PIXMAP_HBITMAP (values->tile)),
319 win32_gc->values_mask &= ~GDK_GC_TILE;
320 GDK_NOTE (GC, (g_print ("%stile=NULL", s),
325 if (mask & GDK_GC_STIPPLE)
327 if (values->stipple != NULL)
329 win32_gc->values_mask |= GDK_GC_STIPPLE;
331 (g_print ("%sstipple=%p", s,
332 GDK_PIXMAP_HBITMAP (values->stipple)),
337 win32_gc->values_mask &= ~GDK_GC_STIPPLE;
338 GDK_NOTE (GC, (g_print ("%sstipple=NULL", s),
343 if (mask & GDK_GC_CLIP_MASK)
345 if (win32_gc->hcliprgn != NULL)
346 DeleteObject (win32_gc->hcliprgn);
348 if (values->clip_mask != NULL)
350 win32_gc->hcliprgn = _gdk_win32_bitmap_to_hrgn (values->clip_mask);
351 win32_gc->values_mask |= GDK_GC_CLIP_MASK;
355 win32_gc->hcliprgn = NULL;
356 win32_gc->values_mask &= ~GDK_GC_CLIP_MASK;
358 GDK_NOTE (GC, (g_print ("%sclip=%p", s, win32_gc->hcliprgn),
362 if (mask & GDK_GC_SUBWINDOW)
364 win32_gc->subwindow_mode = values->subwindow_mode;
365 win32_gc->values_mask |= GDK_GC_SUBWINDOW;
366 GDK_NOTE (GC, (g_print ("%ssubw=%d", s, win32_gc->subwindow_mode),
370 if (mask & GDK_GC_TS_X_ORIGIN)
372 win32_gc->values_mask |= GDK_GC_TS_X_ORIGIN;
373 GDK_NOTE (GC, (g_print ("%sts_x=%d", s, values->ts_x_origin),
377 if (mask & GDK_GC_TS_Y_ORIGIN)
379 win32_gc->values_mask |= GDK_GC_TS_Y_ORIGIN;
380 GDK_NOTE (GC, (g_print ("%sts_y=%d", s, values->ts_y_origin),
384 if (mask & GDK_GC_CLIP_X_ORIGIN)
386 win32_gc->values_mask |= GDK_GC_CLIP_X_ORIGIN;
387 GDK_NOTE (GC, (g_print ("%sclip_x=%d", s, values->clip_x_origin),
391 if (mask & GDK_GC_CLIP_Y_ORIGIN)
393 win32_gc->values_mask |= GDK_GC_CLIP_Y_ORIGIN;
394 GDK_NOTE (GC, (g_print ("%sclip_y=%d", s, values->clip_y_origin),
398 if (mask & GDK_GC_EXPOSURES)
400 win32_gc->graphics_exposures = values->graphics_exposures;
401 win32_gc->values_mask |= GDK_GC_EXPOSURES;
402 GDK_NOTE (GC, (g_print ("%sexp=%d", s, win32_gc->graphics_exposures),
406 if (mask & GDK_GC_LINE_WIDTH)
408 win32_gc->pen_width = values->line_width;
409 win32_gc->values_mask |= GDK_GC_LINE_WIDTH;
410 GDK_NOTE (GC, (g_print ("%spw=%d", s, win32_gc->pen_width),
414 if (mask & GDK_GC_LINE_STYLE)
416 win32_gc->line_style = values->line_style;
417 win32_gc->values_mask |= GDK_GC_LINE_STYLE;
420 if (mask & GDK_GC_CAP_STYLE)
422 win32_gc->cap_style = values->cap_style;
423 win32_gc->values_mask |= GDK_GC_CAP_STYLE;
426 if (mask & GDK_GC_JOIN_STYLE)
428 win32_gc->join_style = values->join_style;
429 win32_gc->values_mask |= GDK_GC_JOIN_STYLE;
432 if (mask & (GDK_GC_LINE_WIDTH|GDK_GC_LINE_STYLE|GDK_GC_CAP_STYLE|GDK_GC_JOIN_STYLE))
434 fixup_pen (win32_gc);
435 GDK_NOTE (GC, (g_print ("%sps|=PS_STYLE_%s|PS_ENDCAP_%s|PS_JOIN_%s", s,
436 _gdk_win32_psstyle_to_string (win32_gc->pen_style),
437 _gdk_win32_psendcap_to_string (win32_gc->pen_style),
438 _gdk_win32_psjoin_to_string (win32_gc->pen_style)),
442 GDK_NOTE (GC, g_print ("} mask=(%s)", _gdk_win32_gcvalues_mask_to_string (win32_gc->values_mask)));
446 _gdk_win32_gc_new (GdkDrawable *drawable,
448 GdkGCValuesMask values_mask)
451 GdkGCWin32 *win32_gc;
453 /* NOTICE that the drawable here has to be the impl drawable,
454 * not the publically-visible drawables.
456 g_return_val_if_fail (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable), NULL);
458 gc = g_object_new (_gdk_gc_win32_get_type (), NULL);
459 win32_gc = GDK_GC_WIN32 (gc);
461 _gdk_gc_init (gc, drawable, values, values_mask);
463 win32_gc->hcliprgn = NULL;
465 win32_gc->font = NULL;
466 win32_gc->rop2 = R2_COPYPEN;
467 win32_gc->subwindow_mode = GDK_CLIP_BY_CHILDREN;
468 win32_gc->graphics_exposures = TRUE;
469 win32_gc->pen_width = 0;
470 /* Don't get confused by the PS_ENDCAP_ROUND. For narrow GDI pens
471 * (width == 1), PS_GEOMETRIC|PS_ENDCAP_ROUND works like X11's
474 win32_gc->pen_style = PS_GEOMETRIC|PS_ENDCAP_ROUND|PS_JOIN_MITER;
475 win32_gc->line_style = GDK_LINE_SOLID;
476 win32_gc->cap_style = GDK_CAP_BUTT;
477 win32_gc->join_style = GDK_JOIN_MITER;
478 win32_gc->pen_dashes = NULL;
479 win32_gc->pen_num_dashes = 0;
480 win32_gc->pen_dash_offset = 0;
481 win32_gc->pen_hbrbg = NULL;
483 win32_gc->values_mask = GDK_GC_FUNCTION | GDK_GC_FILL;
485 GDK_NOTE (GC, g_print ("_gdk_win32_gc_new: %p: ", win32_gc));
486 gdk_win32_gc_values_to_win32values (values, values_mask, win32_gc);
487 GDK_NOTE (GC, g_print ("\n"));
489 win32_gc->hdc = NULL;
495 gdk_win32_gc_get_values (GdkGC *gc,
498 GdkGCWin32 *win32_gc = GDK_GC_WIN32 (gc);
500 values->foreground.pixel = _gdk_gc_get_fg_pixel (gc);
501 values->background.pixel = _gdk_gc_get_bg_pixel (gc);
502 values->font = win32_gc->font;
504 switch (win32_gc->rop2)
507 values->function = GDK_COPY; break;
509 values->function = GDK_INVERT; break;
511 values->function = GDK_XOR; break;
513 values->function = GDK_CLEAR; break;
515 values->function = GDK_AND; break;
517 values->function = GDK_AND_REVERSE; break;
519 values->function = GDK_AND_INVERT; break;
521 values->function = GDK_NOOP; break;
523 values->function = GDK_OR; break;
525 values->function = GDK_EQUIV; break;
527 values->function = GDK_OR_REVERSE; break;
529 values->function = GDK_COPY_INVERT; break;
531 values->function = GDK_OR_INVERT; break;
533 values->function = GDK_NAND; break;
535 values->function = GDK_NOR; break;
537 values->function = GDK_SET; break;
540 values->fill = _gdk_gc_get_fill (gc);
541 values->tile = _gdk_gc_get_tile (gc);
542 values->stipple = _gdk_gc_get_stipple (gc);
544 /* Also the X11 backend always returns a NULL clip_mask */
545 values->clip_mask = NULL;
547 values->subwindow_mode = win32_gc->subwindow_mode;
548 values->ts_x_origin = win32_gc->parent_instance.ts_x_origin;
549 values->ts_y_origin = win32_gc->parent_instance.ts_y_origin;
550 values->clip_x_origin = win32_gc->parent_instance.clip_x_origin;
551 values->clip_y_origin = win32_gc->parent_instance.clip_y_origin;
552 values->graphics_exposures = win32_gc->graphics_exposures;
553 values->line_width = win32_gc->pen_width;
555 values->line_style = win32_gc->line_style;
556 values->cap_style = win32_gc->cap_style;
557 values->join_style = win32_gc->join_style;
561 gdk_win32_gc_set_values (GdkGC *gc,
563 GdkGCValuesMask mask)
565 g_return_if_fail (GDK_IS_GC (gc));
567 GDK_NOTE (GC, g_print ("gdk_win32_gc_set_values: %p: ", GDK_GC_WIN32 (gc)));
568 gdk_win32_gc_values_to_win32values (values, mask, GDK_GC_WIN32 (gc));
569 GDK_NOTE (GC, g_print ("\n"));
573 gdk_win32_gc_set_dashes (GdkGC *gc,
578 GdkGCWin32 *win32_gc;
581 g_return_if_fail (GDK_IS_GC (gc));
582 g_return_if_fail (dash_list != NULL);
584 win32_gc = GDK_GC_WIN32 (gc);
586 win32_gc->pen_num_dashes = n;
587 g_free (win32_gc->pen_dashes);
588 win32_gc->pen_dashes = g_new (DWORD, n);
589 for (i = 0; i < n; i++)
590 win32_gc->pen_dashes[i] = dash_list[i];
591 win32_gc->pen_dash_offset = dash_offset;
592 fixup_pen (win32_gc);
596 _gdk_windowing_gc_set_clip_region (GdkGC *gc,
599 GdkGCWin32 *win32_gc = GDK_GC_WIN32 (gc);
601 if (win32_gc->hcliprgn)
602 DeleteObject (win32_gc->hcliprgn);
606 GDK_NOTE (GC, g_print ("gdk_gc_set_clip_region: %p: %s\n",
608 _gdk_win32_gdkregion_to_string (region)));
610 win32_gc->hcliprgn = _gdk_win32_gdkregion_to_hrgn (region, 0, 0);
611 win32_gc->values_mask |= GDK_GC_CLIP_MASK;
615 GDK_NOTE (GC, g_print ("gdk_gc_set_clip_region: NULL\n"));
617 win32_gc->hcliprgn = NULL;
618 win32_gc->values_mask &= ~GDK_GC_CLIP_MASK;
621 gc->clip_x_origin = 0;
622 gc->clip_y_origin = 0;
624 win32_gc->values_mask &= ~(GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN);
628 _gdk_windowing_gc_copy (GdkGC *dst_gc,
631 GdkGCWin32 *dst_win32_gc = GDK_GC_WIN32 (dst_gc);
632 GdkGCWin32 *src_win32_gc = GDK_GC_WIN32 (src_gc);
634 GDK_NOTE (GC, g_print ("gdk_gc_copy: %p := %p\n", dst_win32_gc, src_win32_gc));
636 if (dst_win32_gc->hcliprgn != NULL)
637 DeleteObject (dst_win32_gc->hcliprgn);
639 if (dst_win32_gc->font != NULL)
640 gdk_font_unref (dst_win32_gc->font);
642 if (dst_win32_gc->pen_dashes)
643 g_free (dst_win32_gc->pen_dashes);
645 dst_win32_gc->hcliprgn = src_win32_gc->hcliprgn;
646 if (dst_win32_gc->hcliprgn)
648 /* create a new region, to copy to */
649 dst_win32_gc->hcliprgn = CreateRectRgn (0,0,1,1);
650 /* overwrite from source */
651 CombineRgn (dst_win32_gc->hcliprgn, src_win32_gc->hcliprgn,
655 dst_win32_gc->values_mask = src_win32_gc->values_mask;
656 dst_win32_gc->font = src_win32_gc->font;
657 if (dst_win32_gc->font != NULL)
658 gdk_font_ref (dst_win32_gc->font);
660 dst_win32_gc->rop2 = src_win32_gc->rop2;
662 dst_win32_gc->subwindow_mode = src_win32_gc->subwindow_mode;
663 dst_win32_gc->graphics_exposures = src_win32_gc->graphics_exposures;
664 dst_win32_gc->pen_width = src_win32_gc->pen_width;
665 dst_win32_gc->pen_style = src_win32_gc->pen_style;
666 dst_win32_gc->line_style = src_win32_gc->line_style;
667 dst_win32_gc->cap_style = src_win32_gc->cap_style;
668 dst_win32_gc->join_style = src_win32_gc->join_style;
669 if (src_win32_gc->pen_dashes)
670 dst_win32_gc->pen_dashes = g_memdup (src_win32_gc->pen_dashes,
671 sizeof (DWORD) * src_win32_gc->pen_num_dashes);
673 dst_win32_gc->pen_dashes = NULL;
674 dst_win32_gc->pen_num_dashes = src_win32_gc->pen_num_dashes;
675 dst_win32_gc->pen_dash_offset = src_win32_gc->pen_dash_offset;
678 dst_win32_gc->hdc = NULL;
679 dst_win32_gc->saved_dc = FALSE;
680 dst_win32_gc->holdpal = NULL;
681 dst_win32_gc->pen_hbrbg = NULL;
685 gdk_gc_get_screen (GdkGC *gc)
687 g_return_val_if_fail (GDK_IS_GC_WIN32 (gc), NULL);
692 static guint bitmask[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 };
695 _gdk_win32_colormap_color (GdkColormap *colormap,
698 const GdkVisual *visual;
699 GdkColormapPrivateWin32 *colormap_private;
702 if (colormap == NULL)
703 return DIBINDEX (pixel & 1);
705 colormap_private = GDK_WIN32_COLORMAP_DATA (colormap);
707 g_assert (colormap_private != NULL);
709 visual = colormap->visual;
710 switch (visual->type)
712 case GDK_VISUAL_GRAYSCALE:
713 case GDK_VISUAL_PSEUDO_COLOR:
714 case GDK_VISUAL_STATIC_COLOR:
715 return PALETTEINDEX (pixel);
717 case GDK_VISUAL_TRUE_COLOR:
718 r = (pixel & visual->red_mask) >> visual->red_shift;
719 r = (r * 255) / bitmask[visual->red_prec];
720 g = (pixel & visual->green_mask) >> visual->green_shift;
721 g = (g * 255) / bitmask[visual->green_prec];
722 b = (pixel & visual->blue_mask) >> visual->blue_shift;
723 b = (b * 255) / bitmask[visual->blue_prec];
724 return RGB (r, g, b);
727 g_assert_not_reached ();
734 GdkColormap *colormap)
736 GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc;
737 GdkColormapPrivateWin32 *colormap_private;
742 (colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR ||
743 colormap->visual->type == GDK_VISUAL_STATIC_COLOR))
745 colormap_private = GDK_WIN32_COLORMAP_DATA (colormap);
747 g_assert (colormap_private != NULL);
749 if (!(win32_gc->holdpal = SelectPalette (win32_gc->hdc, colormap_private->hpal, FALSE)))
750 WIN32_GDI_FAILED ("SelectPalette"), ok = FALSE;
751 else if ((k = RealizePalette (win32_gc->hdc)) == GDI_ERROR)
752 WIN32_GDI_FAILED ("RealizePalette"), ok = FALSE;
754 GDK_NOTE (COLORMAP, g_print ("predraw: realized %p: %d colors\n",
755 colormap_private->hpal, k));
761 static GdkDrawableImplWin32 *
762 get_impl_drawable (GdkDrawable *drawable)
764 if (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable))
765 return GDK_DRAWABLE_IMPL_WIN32(drawable);
766 else if (GDK_IS_WINDOW (drawable))
767 return GDK_DRAWABLE_IMPL_WIN32 ((GDK_WINDOW_OBJECT (drawable))->impl);
768 else if (GDK_IS_PIXMAP (drawable))
769 return GDK_DRAWABLE_IMPL_WIN32 ((GDK_PIXMAP_OBJECT (drawable))->impl);
771 g_assert_not_reached ();
778 * @drawable: destination #GdkDrawable
779 * @gc: #GdkGC to use for drawing on @drawable
780 * @usage: mask indicating what properties needs to be set up
782 * Allocates a Windows device context handle (HDC) for drawing into
783 * @drawable, and sets it up appropriately according to @usage.
785 * Each #GdkGC can at one time have only one HDC associated with it.
787 * The following flags in @mask are handled:
789 * If %GDK_GC_FOREGROUND is set in @mask, a solid brush of the
790 * foreground color in @gc is selected into the HDC. The text color of
791 * the HDC is also set. If the @drawable has a palette (256-color
792 * mode), the palette is selected and realized.
794 * If any of the line attribute flags (%GDK_GC_LINE_WIDTH,
795 * %GDK_GC_LINE_STYLE, %GDK_GC_CAP_STYLE and %GDK_GC_JOIN_STYLE) is
796 * set in @mask, a solid pen of the foreground color and appropriate
797 * width and stule is created and selected into the HDC. Note that the
798 * dash properties are not completely implemented.
800 * If the %GDK_GC_FONT flag is set, the background mix mode is set to
801 * %TRANSPARENT. and the text alignment is set to
802 * %TA_BASELINE|%TA_LEFT. Note that no font gets selected into the HDC
805 * Some things are done regardless of @mask: If the function in @gc is
806 * any other than %GDK_COPY, the raster operation of the HDC is
807 * set. If @gc has a clip mask, the clip region of the HDC is set.
809 * Note that the fill style, tile, stipple, and tile and stipple
810 * origins in the @gc are ignored by this function. (In general, tiles
811 * and stipples can't be implemented directly on Win32; you need to do
812 * multiple pass drawing and blitting to implement tiles or
813 * stipples. GDK does just that when you call the GDK drawing
814 * functions with a GC that asks for tiles or stipples.)
816 * When the HDC is no longer used, it should be released by calling
817 * <function>gdk_win32_hdc_release()</function> with the same
820 * If you modify the HDC by calling <function>SelectObject</function>
821 * you should undo those modifications before calling
822 * <function>gdk_win32_hdc_release()</function>.
824 * Return value: The HDC.
827 gdk_win32_hdc_get (GdkDrawable *drawable,
829 GdkGCValuesMask usage)
831 GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc;
832 GdkDrawableImplWin32 *impl = NULL;
834 COLORREF fg = RGB (0, 0, 0), bg = RGB (255, 255, 255);
838 g_assert (win32_gc->hdc == NULL);
840 impl = get_impl_drawable (drawable);
842 win32_gc->hdc = _gdk_win32_drawable_acquire_dc (GDK_DRAWABLE (impl));
843 ok = win32_gc->hdc != NULL;
845 if (ok && (win32_gc->saved_dc = SaveDC (win32_gc->hdc)) == 0)
846 WIN32_GDI_FAILED ("SaveDC"), ok = FALSE;
848 if (ok && (usage & (GDK_GC_FOREGROUND | GDK_GC_BACKGROUND)))
849 ok = predraw (gc, impl->colormap);
851 if (ok && (usage & GDK_GC_FOREGROUND))
853 fg = _gdk_win32_colormap_color (impl->colormap, _gdk_gc_get_fg_pixel (gc));
854 if ((hbr = CreateSolidBrush (fg)) == NULL)
855 WIN32_GDI_FAILED ("CreateSolidBrush"), ok = FALSE;
857 if (ok && SelectObject (win32_gc->hdc, hbr) == NULL)
858 WIN32_GDI_FAILED ("SelectObject"), ok = FALSE;
860 if (ok && SetTextColor (win32_gc->hdc, fg) == CLR_INVALID)
861 WIN32_GDI_FAILED ("SetTextColor"), ok = FALSE;
864 if (ok && (usage & LINE_ATTRIBUTES))
866 /* For drawing GDK_LINE_DOUBLE_DASH */
867 if ((usage & GDK_GC_BACKGROUND) && win32_gc->line_style == GDK_LINE_DOUBLE_DASH)
869 bg = _gdk_win32_colormap_color (impl->colormap, _gdk_gc_get_bg_pixel (gc));
870 if ((win32_gc->pen_hbrbg = CreateSolidBrush (bg)) == NULL)
871 WIN32_GDI_FAILED ("CreateSolidBrush"), ok = FALSE;
877 DWORD style_count = 0;
878 const DWORD *style = NULL;
880 /* Create and select pen */
881 logbrush.lbStyle = BS_SOLID;
882 logbrush.lbColor = fg;
883 logbrush.lbHatch = 0;
885 if ((win32_gc->pen_style & PS_STYLE_MASK) == PS_USERSTYLE)
887 style_count = win32_gc->pen_num_dashes;
888 style = win32_gc->pen_dashes;
891 if ((hpen = ExtCreatePen (win32_gc->pen_style,
892 MAX (win32_gc->pen_width, 1),
894 style_count, style)) == NULL)
895 WIN32_GDI_FAILED ("ExtCreatePen"), ok = FALSE;
897 if (ok && SelectObject (win32_gc->hdc, hpen) == NULL)
898 WIN32_GDI_FAILED ("SelectObject"), ok = FALSE;
902 if (ok && (usage & GDK_GC_FONT))
904 if (SetBkMode (win32_gc->hdc, TRANSPARENT) == 0)
905 WIN32_GDI_FAILED ("SetBkMode"), ok = FALSE;
907 if (ok && SetTextAlign (win32_gc->hdc, TA_BASELINE|TA_LEFT|TA_NOUPDATECP) == GDI_ERROR)
908 WIN32_GDI_FAILED ("SetTextAlign"), ok = FALSE;
911 if (ok && win32_gc->rop2 != R2_COPYPEN)
912 if (SetROP2 (win32_gc->hdc, win32_gc->rop2) == 0)
913 WIN32_GDI_FAILED ("SetROP2"), ok = FALSE;
916 (win32_gc->values_mask & GDK_GC_CLIP_MASK) &&
917 win32_gc->hcliprgn != NULL)
919 if (SelectClipRgn (win32_gc->hdc, win32_gc->hcliprgn) == ERROR)
920 WIN32_API_FAILED ("SelectClipRgn"), ok = FALSE;
922 if (ok && win32_gc->values_mask & (GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN) &&
923 OffsetClipRgn (win32_gc->hdc,
924 win32_gc->values_mask & GDK_GC_CLIP_X_ORIGIN ? gc->clip_x_origin : 0,
925 win32_gc->values_mask & GDK_GC_CLIP_Y_ORIGIN ? gc->clip_y_origin : 0) == ERROR)
926 WIN32_API_FAILED ("OffsetClipRgn"), ok = FALSE;
929 GDK_NOTE (GC, (g_print ("gdk_win32_hdc_get: %p (%s): ",
930 win32_gc, _gdk_win32_gcvalues_mask_to_string (usage)),
931 _gdk_win32_print_dc (win32_gc->hdc)));
933 return win32_gc->hdc;
937 * gdk_win32_hdc_release:
938 * @drawable: destination #GdkDrawable
939 * @gc: #GdkGC to use for drawing on @drawable
940 * @usage: mask indicating what properties were set up
942 * This function deallocates the Windows device context allocated by
943 * <funcion>gdk_win32_hdc_get()</function>. It should be called with
944 * the same parameters.
947 gdk_win32_hdc_release (GdkDrawable *drawable,
949 GdkGCValuesMask usage)
951 GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc;
952 GdkDrawableImplWin32 *impl = NULL;
956 GDK_NOTE (GC, g_print ("gdk_win32_hdc_release: %p: %p (%s)\n",
957 win32_gc, win32_gc->hdc,
958 _gdk_win32_gcvalues_mask_to_string (usage)));
960 impl = get_impl_drawable (drawable);
962 if (win32_gc->holdpal != NULL)
966 if (!SelectPalette (win32_gc->hdc, win32_gc->holdpal, FALSE))
967 WIN32_GDI_FAILED ("SelectPalette");
968 else if ((k = RealizePalette (win32_gc->hdc)) == GDI_ERROR)
969 WIN32_GDI_FAILED ("RealizePalette");
971 GDK_NOTE (COLORMAP, g_print ("gdk_win32_hdc_release: realized %p: %d colors\n",
972 win32_gc->holdpal, k));
973 win32_gc->holdpal = NULL;
976 if (usage & LINE_ATTRIBUTES)
977 if ((hpen = GetCurrentObject (win32_gc->hdc, OBJ_PEN)) == NULL)
978 WIN32_GDI_FAILED ("GetCurrentObject");
980 if (usage & GDK_GC_FOREGROUND)
981 if ((hbr = GetCurrentObject (win32_gc->hdc, OBJ_BRUSH)) == NULL)
982 WIN32_GDI_FAILED ("GetCurrentObject");
984 GDI_CALL (RestoreDC, (win32_gc->hdc, win32_gc->saved_dc));
986 _gdk_win32_drawable_release_dc (GDK_DRAWABLE (impl));
989 GDI_CALL (DeleteObject, (hpen));
992 GDI_CALL (DeleteObject, (hbr));
994 if (win32_gc->pen_hbrbg != NULL)
995 GDI_CALL (DeleteObject, (win32_gc->pen_hbrbg));
997 win32_gc->hdc = NULL;
1000 /* This function originally from Jean-Edouard Lachand-Robert, and
1001 * available at www.codeguru.com. Simplified for our needs, not sure
1002 * how much of the original code left any longer. Now handles just
1003 * one-bit deep bitmaps (in Window parlance, ie those that GDK calls
1004 * bitmaps (and not pixmaps), with zero pixels being transparent.
1007 /* _gdk_win32_bitmap_to_hrgn : Create a region from the
1008 * "non-transparent" pixels of a bitmap.
1012 _gdk_win32_bitmap_to_hrgn (GdkPixmap *pixmap)
1019 gint width, height, bpl;
1023 g_assert (GDK_PIXMAP_OBJECT(pixmap)->depth == 1);
1025 bits = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->bits;
1026 width = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->width;
1027 height = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->height;
1028 bpl = ((width - 1)/32 + 1)*4;
1030 /* For better performances, we will use the ExtCreateRegion()
1031 * function to create the region. This function take a RGNDATA
1032 * structure on entry. We will add rectangles by amount of
1033 * ALLOC_UNIT number in this structure.
1035 #define ALLOC_UNIT 100
1036 maxRects = ALLOC_UNIT;
1038 pData = g_malloc (sizeof (RGNDATAHEADER) + (sizeof (RECT) * maxRects));
1039 pData->rdh.dwSize = sizeof (RGNDATAHEADER);
1040 pData->rdh.iType = RDH_RECTANGLES;
1041 pData->rdh.nCount = pData->rdh.nRgnSize = 0;
1042 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1044 for (y = 0; y < height; y++)
1046 /* Scan each bitmap row from left to right*/
1047 p = (guchar *) bits + y * bpl;
1048 for (x = 0; x < width; x++)
1050 /* Search for a continuous range of "non transparent pixels"*/
1054 if ((((p[x/8])>>(7-(x%8)))&1) == 0)
1055 /* This pixel is "transparent"*/
1063 /* Add the pixels (x0, y) to (x, y+1) as a new rectangle
1066 if (pData->rdh.nCount >= maxRects)
1068 maxRects += ALLOC_UNIT;
1069 pData = g_realloc (pData, sizeof(RGNDATAHEADER)
1070 + (sizeof(RECT) * maxRects));
1072 pr = (RECT *) &pData->Buffer;
1073 SetRect (&pr[pData->rdh.nCount], x0, y, x, y+1);
1074 if (x0 < pData->rdh.rcBound.left)
1075 pData->rdh.rcBound.left = x0;
1076 if (y < pData->rdh.rcBound.top)
1077 pData->rdh.rcBound.top = y;
1078 if (x > pData->rdh.rcBound.right)
1079 pData->rdh.rcBound.right = x;
1080 if (y+1 > pData->rdh.rcBound.bottom)
1081 pData->rdh.rcBound.bottom = y+1;
1082 pData->rdh.nCount++;
1084 /* On Windows98, ExtCreateRegion() may fail if the
1085 * number of rectangles is too large (ie: >
1086 * 4000). Therefore, we have to create the region by
1089 if (pData->rdh.nCount == 2000)
1091 HRGN h = ExtCreateRegion (NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
1094 CombineRgn(hRgn, hRgn, h, RGN_OR);
1099 pData->rdh.nCount = 0;
1100 SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
1106 /* Create or extend the region with the remaining rectangles*/
1107 h = ExtCreateRegion (NULL, sizeof (RGNDATAHEADER)
1108 + (sizeof (RECT) * maxRects), pData);
1111 CombineRgn (hRgn, hRgn, h, RGN_OR);
1124 _gdk_win32_gdkregion_to_hrgn (GdkRegion *region,
1131 GdkRegionBox *boxes = region->rects;
1133 sizeof (RGNDATAHEADER) + (sizeof (RECT) * region->numRects);
1136 rgndata = g_malloc (nbytes);
1137 rgndata->rdh.dwSize = sizeof (RGNDATAHEADER);
1138 rgndata->rdh.iType = RDH_RECTANGLES;
1139 rgndata->rdh.nCount = rgndata->rdh.nRgnSize = 0;
1140 SetRect (&rgndata->rdh.rcBound,
1141 G_MAXLONG, G_MAXLONG, G_MINLONG, G_MINLONG);
1143 for (i = 0; i < region->numRects; i++)
1145 rect = ((RECT *) rgndata->Buffer) + rgndata->rdh.nCount++;
1147 rect->left = boxes[i].x1 + x_origin;
1148 rect->right = boxes[i].x2 + x_origin;
1149 rect->top = boxes[i].y1 + y_origin;
1150 rect->bottom = boxes[i].y2 + y_origin;
1152 if (rect->left < rgndata->rdh.rcBound.left)
1153 rgndata->rdh.rcBound.left = rect->left;
1154 if (rect->right > rgndata->rdh.rcBound.right)
1155 rgndata->rdh.rcBound.right = rect->right;
1156 if (rect->top < rgndata->rdh.rcBound.top)
1157 rgndata->rdh.rcBound.top = rect->top;
1158 if (rect->bottom > rgndata->rdh.rcBound.bottom)
1159 rgndata->rdh.rcBound.bottom = rect->bottom;
1161 if ((hrgn = ExtCreateRegion (NULL, nbytes, rgndata)) == NULL)
1162 WIN32_API_FAILED ("ExtCreateRegion");