63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
#include "render.h"
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#include "color.h"
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#include "mask.h"
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RrPixmapMask *RrPixmapMaskNew(const RrInstance *inst,
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gint w, gint h, const gchar *data)
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{
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RrPixmapMask *m = g_new(RrPixmapMask, 1);
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m->inst = inst;
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m->width = w;
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m->height = 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(RrDisplay(inst), RrRootWindow(inst),
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data, w, h);
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return m;
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}
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void RrPixmapMaskFree(RrPixmapMask *m)
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{
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if (m) {
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XFreePixmap(RrDisplay(m->inst), 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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}
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void RrPixmapMaskDraw(Pixmap p, const RrTextureMask *m, const RrRect *area)
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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 = area->x + (area->width - m->mask->width) / 2;
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y = area->y + (area->height - m->mask->height) / 2;
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if (x < 0) x = 0;
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if (y < 0) y = 0;
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XSetClipMask(RrDisplay(m->mask->inst), RrColorGC(m->color), m->mask->mask);
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XSetClipOrigin(RrDisplay(m->mask->inst), RrColorGC(m->color), x, y);
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/* fill in the clipped region */
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XFillRectangle(RrDisplay(m->mask->inst), p, RrColorGC(m->color), x, y,
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x + m->mask->width, y + m->mask->height);
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/* unset the clip region */
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XSetClipMask(RrDisplay(m->mask->inst), RrColorGC(m->color), None);
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XSetClipOrigin(RrDisplay(m->mask->inst), RrColorGC(m->color), 0, 0);
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}
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RrPixmapMask *RrPixmapMaskCopy(const RrPixmapMask *src)
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{
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RrPixmapMask *m = g_new(RrPixmapMask, 1);
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m->inst = src->inst;
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m->width = src->width;
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m->height = src->height;
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/* round up to nearest byte */
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m->data = g_memdup(src->data, (src->width * src->height + 7) / 8);
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m->mask = XCreateBitmapFromData(RrDisplay(m->inst), RrRootWindow(m->inst),
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m->data, m->width, m->height);
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return m;
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}
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