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/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
mask.c for the Openbox window manager
Copyright (c) 2003-2007 Dana Jansens
Copyright (c) 2003 Derek Foreman
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
See the COPYING file for a copy of the GNU General Public License.
*/
#include "render.h"
#include "color.h"
#include "mask.h"
RrPixmapMask *RrPixmapMaskNew(const RrInstance *inst,
gint w, gint h, const gchar *data)
{
RrPixmapMask *m = g_slice_new(RrPixmapMask);
m->inst = inst;
m->width = w;
m->height = h;
/* round up to nearest byte */
m->data = g_memdup(data, (w + 7) / 8 * h);
m->mask = XCreateBitmapFromData(RrDisplay(inst), RrRootWindow(inst),
data, w, h);
return m;
}
void RrPixmapMaskFree(RrPixmapMask *m)
{
if (m) {
XFreePixmap(RrDisplay(m->inst), m->mask);
g_free(m->data);
g_slice_free(RrPixmapMask, m);
}
}
void RrPixmapMaskDraw(Pixmap p, const RrTextureMask *m, const RrRect *area)
{
gint x, y;
if (m->mask == NULL) return; /* no mask given */
/* set the clip region */
x = area->x + (area->width - m->mask->width) / 2;
y = area->y + (area->height - m->mask->height) / 2;
if (x < 0) x = 0;
if (y < 0) y = 0;
XSetClipMask(RrDisplay(m->mask->inst), RrColorGC(m->color), m->mask->mask);
XSetClipOrigin(RrDisplay(m->mask->inst), RrColorGC(m->color), x, y);
/* fill in the clipped region */
XFillRectangle(RrDisplay(m->mask->inst), p, RrColorGC(m->color), x, y,
x + m->mask->width, y + m->mask->height);
/* unset the clip region */
XSetClipMask(RrDisplay(m->mask->inst), RrColorGC(m->color), None);
XSetClipOrigin(RrDisplay(m->mask->inst), RrColorGC(m->color), 0, 0);
}
RrPixmapMask *RrPixmapMaskCopy(const RrPixmapMask *src)
{
RrPixmapMask *m = g_slice_new(RrPixmapMask);
m->inst = src->inst;
m->width = src->width;
m->height = src->height;
/* round up to nearest byte */
m->data = g_memdup(src->data, (src->width + 7) / 8 * src->height);
m->mask = XCreateBitmapFromData(RrDisplay(m->inst), RrRootWindow(m->inst),
m->data, m->width, m->height);
return m;
}
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