| 1 | /* Common Lisp bindings for GTK+ v2.x |
| 2 | * Copyright 1999-2007 Espen S. Johnsen <espen@users.sf.net> |
| 3 | * |
| 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: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 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. |
| 22 | */ |
| 23 | |
| 24 | /* $Id: glue.c,v 1.9 2008-11-06 17:27:39 espen Exp $ */ |
| 25 | |
| 26 | |
| 27 | #include <gdk/gdk.h> |
| 28 | #include <gdk-pixbuf/gdk-pixbuf.h> |
| 29 | |
| 30 | #ifdef GDK_WINDOWING_X11 |
| 31 | #include <gdk/gdkx.h> |
| 32 | #elif defined (G_OS_WIN32) |
| 33 | #include <gdk/gdkwin32.h> |
| 34 | #endif |
| 35 | |
| 36 | gint clg_gdk_connection_number (GdkDisplay *display) |
| 37 | { |
| 38 | #ifdef GDK_WINDOWING_X11 |
| 39 | return ConnectionNumber (GDK_DISPLAY_XDISPLAY (display)); |
| 40 | #else |
| 41 | return -1; |
| 42 | #endif |
| 43 | } |
| 44 | |
| 45 | |
| 46 | GdkWindow *clg_gdk_cairo_surface_get_window (cairo_surface_t *surface) |
| 47 | { |
| 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 |
| 52 | g_return_if_fail (cairo_surface_get_type (surface) == CAIRO_SURFACE_TYPE_XLIB); |
| 53 | |
| 54 | Display* display = cairo_xlib_surface_get_display (surface); |
| 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; |
| 62 | #elif defined (G_OS_WIN32) |
| 63 | HDC hdc = (HDC)cairo_win32_surface_get_dc (surface); |
| 64 | if (hdc) |
| 65 | return gdk_window_lookup ((GdkNativeWindow)hdc); |
| 66 | else |
| 67 | return NULL; |
| 68 | #else |
| 69 | return NULL; |
| 70 | #endif |
| 71 | } |
| 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 | |