1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 mask.c for the Openbox window manager
4 Copyright (c) 2003-2007 Dana Jansens
5 Copyright (c) 2003 Derek Foreman
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 See the COPYING file for a copy of the GNU General Public License.
24 RrPixmapMask *RrPixmapMaskNew(const RrInstance *inst,
25 gint w, gint h, const gchar *data)
27 RrPixmapMask *m = g_new(RrPixmapMask, 1);
31 /* round up to nearest byte */
32 m->data = g_memdup(data, (w + 7) / 8 * h);
33 m->mask = XCreateBitmapFromData(RrDisplay(inst), RrRootWindow(inst),
38 void RrPixmapMaskFree(RrPixmapMask *m)
41 XFreePixmap(RrDisplay(m->inst), m->mask);
47 void RrPixmapMaskDraw(Pixmap p, const RrTextureMask *m, const RrRect *area)
50 if (m->mask == None) return; /* no mask given */
52 /* set the clip region */
53 x = area->x + (area->width - m->mask->width) / 2;
54 y = area->y + (area->height - m->mask->height) / 2;
59 XSetClipMask(RrDisplay(m->mask->inst), RrColorGC(m->color), m->mask->mask);
60 XSetClipOrigin(RrDisplay(m->mask->inst), RrColorGC(m->color), x, y);
62 /* fill in the clipped region */
63 XFillRectangle(RrDisplay(m->mask->inst), p, RrColorGC(m->color), x, y,
64 x + m->mask->width, y + m->mask->height);
66 /* unset the clip region */
67 XSetClipMask(RrDisplay(m->mask->inst), RrColorGC(m->color), None);
68 XSetClipOrigin(RrDisplay(m->mask->inst), RrColorGC(m->color), 0, 0);
71 RrPixmapMask *RrPixmapMaskCopy(const RrPixmapMask *src)
73 RrPixmapMask *m = g_new(RrPixmapMask, 1);
75 m->width = src->width;
76 m->height = src->height;
77 /* round up to nearest byte */
78 m->data = g_memdup(src->data, (src->width + 7) / 8 * src->height);
79 m->mask = XCreateBitmapFromData(RrDisplay(m->inst), RrRootWindow(m->inst),
80 m->data, m->width, m->height);