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1 | /* Common Lisp bindings for GTK+ v2.x |
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2 | * Copyright 1999-2007 Espen S. Johnsen <espen@users.sf.net> |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining |
5 | * a copy of this software and associated documentation files (the |
6 | * "Software"), to deal in the Software without restriction, including |
7 | * without limitation the rights to use, copy, modify, merge, publish, |
8 | * distribute, sublicense, and/or sell copies of the Software, and to |
9 | * permit persons to whom the Software is furnished to do so, subject to |
10 | * the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice shall be |
13 | * included in all copies or substantial portions of the Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
19 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
20 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
21 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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22 | */ |
23 | |
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24 | /* $Id: glue.c,v 1.9 2008-11-06 17:27:39 espen Exp $ */ |
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25 | |
26 | |
27 | #include <gdk/gdk.h> |
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28 | #include <gdk-pixbuf/gdk-pixbuf.h> |
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29 | |
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30 | #ifdef GDK_WINDOWING_X11 |
31 | #include <gdk/gdkx.h> |
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32 | #elif defined (G_OS_WIN32) |
33 | #include <gdk/gdkwin32.h> |
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34 | #endif |
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35 | |
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36 | gint clg_gdk_connection_number (GdkDisplay *display) |
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37 | { |
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38 | #ifdef GDK_WINDOWING_X11 |
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39 | return ConnectionNumber (GDK_DISPLAY_XDISPLAY (display)); |
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40 | #else |
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41 | return -1; |
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42 | #endif |
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43 | } |
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44 | |
45 | |
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46 | GdkWindow *clg_gdk_cairo_surface_get_window (cairo_surface_t *surface) |
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47 | { |
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48 | /* If 'surface_info_key' had been public we would have had a |
49 | portable way to find the GdkWindow of a Cairo surface. */ |
50 | |
51 | #ifdef GDK_WINDOWING_X11 |
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52 | g_return_if_fail (cairo_surface_get_type (surface) == CAIRO_SURFACE_TYPE_XLIB); |
53 | |
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54 | Display* display = cairo_xlib_surface_get_display (surface); |
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55 | if (display) { |
56 | Drawable window = cairo_xlib_surface_get_drawable (surface); |
57 | if (window) |
58 | return gdk_window_lookup_for_display (window, display); |
59 | } |
60 | |
61 | return NULL; |
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62 | #elif defined (G_OS_WIN32) |
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63 | HDC hdc = (HDC)cairo_win32_surface_get_dc (surface); |
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64 | if (hdc) |
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65 | return gdk_window_lookup ((GdkNativeWindow)hdc); |
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66 | else |
67 | return NULL; |
68 | #else |
69 | return NULL; |
70 | #endif |
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71 | } |
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72 | |
73 | void clg_gdk_pixbuf_swap_rgb (GdkPixbuf *pixbuf) |
74 | { |
75 | |
76 | int n_channels = gdk_pixbuf_get_n_channels (pixbuf); |
77 | guchar *p, *pixels = gdk_pixbuf_get_pixels (pixbuf); |
78 | int width = gdk_pixbuf_get_width (pixbuf); |
79 | int height = gdk_pixbuf_get_height (pixbuf); |
80 | int rowstride = gdk_pixbuf_get_rowstride (pixbuf); |
81 | int x, y; |
82 | |
83 | g_assert (gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); |
84 | g_assert (gdk_pixbuf_get_has_alpha (pixbuf)); |
85 | g_assert (n_channels == 4); |
86 | |
87 | for (y = 0; y < height; y++) { |
88 | for (x = 0; x < width; x++) { |
89 | p = pixels + y * rowstride + x * n_channels; |
90 | guint tmp = p[0]; |
91 | p[0] = p[2]; |
92 | p[2] = tmp; |
93 | } |
94 | } |
95 | } |
96 | |