render/mask.c (raw)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 |
#include "render.h" #include "color.h" #include "mask.h" RrPixmapMask *RrPixmapMaskNew(const RrInstance *inst, gint w, gint h, const gchar *data) { RrPixmapMask *m = g_new(RrPixmapMask, 1); m->inst = inst; m->width = w; m->height = h; /* round up to nearest byte */ m->data = g_memdup(data, (w * h + 7) / 8); 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_free(m); } } void RrPixmapMaskDraw(Pixmap p, const RrTextureMask *m, const RrRect *area) { int x, y; if (m->mask == None) 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_new(RrPixmapMask, 1); 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 * src->height + 7) / 8); m->mask = XCreateBitmapFromData(RrDisplay(m->inst), RrRootWindow(m->inst), m->data, m->width, m->height); return m; } |