55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
#include "mask.h"
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#include "../kernel/openbox.h"
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pixmap_mask *pixmap_mask_new(int w, int h, char *data)
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{
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pixmap_mask *m = g_new(pixmap_mask, 1);
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m->w = w;
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m->h = h;
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/* round up to nearest byte */
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m->data = g_memdup(data, (w * h + 7) / 8);
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m->mask = XCreateBitmapFromData(ob_display, ob_root, data, w, h);
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return m;
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}
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void pixmap_mask_free(pixmap_mask *m)
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{
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XFreePixmap(ob_display, m->mask);
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g_free(m->data);
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g_free(m);
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}
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void mask_draw(Pixmap p, TextureMask *m, Rect *position)
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{
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int x, y;
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if (m->mask == None) return; /* no mask given */
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/* set the clip region */
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x = position->x + (position->width - m->mask->w) / 2;
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y = position->y + (position->height - m->mask->h) / 2;
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if (x < 0) x = 0;
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if (y < 0) y = 0;
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XSetClipMask(ob_display, m->color->gc, m->mask->mask);
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XSetClipOrigin(ob_display, m->color->gc, x, y);
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/* fill in the clipped region */
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XFillRectangle(ob_display, p, m->color->gc, x, y,
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x + m->mask->w, y + m->mask->h);
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/* unset the clip region */
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XSetClipMask(ob_display, m->color->gc, None);
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XSetClipOrigin(ob_display, m->color->gc, 0, 0);
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}
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pixmap_mask *pixmap_mask_copy(pixmap_mask *src)
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{
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pixmap_mask *m = g_new(pixmap_mask, 1);
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m->w = src->w;
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m->h = src->h;
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/* round up to nearest byte */
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m->data = g_memdup(src->data, (src->w * src->h + 7) / 8);
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m->mask = XCreateBitmapFromData(ob_display, ob_root, m->data, m->w, m->h);
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return m;
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}
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