all repos — openbox @ 515f8d8760f614b127b4435dca7881a32b5b6207

openbox fork - make it a bit more like ryudo

render/mask.c (raw)

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#include "mask.h"
#include "../kernel/openbox.h"

pixmap_mask *pixmap_mask_new(int w, int h, char *data)
{
    pixmap_mask *m = g_new(pixmap_mask, 1);
    m->w = w;
    m->h = h;
    m->mask = XCreateBitmapFromData(ob_display, ob_root, data, w, h);
    return m;
}

void pixmap_mask_free(pixmap_mask *m)
{
    XFreePixmap(ob_display, m->mask);
    g_free(m);
}

void mask_draw(Pixmap p, TextureMask *m, int width, int height)
{
    int x, y;
    if (m->mask == None) return; // no mask given

    // set the clip region
    x = (width - m->mask->w) / 2;
    y = (height - m->mask->h) / 2;
    XSetClipMask(ob_display, m->color->gc, m->mask->mask);
    XSetClipOrigin(ob_display, m->color->gc, x, y);

    // fill in the clipped region
    XFillRectangle(ob_display, p, m->color->gc, x, y,
                   x + m->mask->w, y + m->mask->h);

    // unset the clip region
    XSetClipMask(ob_display, m->color->gc, None);
    XSetClipOrigin(ob_display, m->color->gc, 0, 0);
}