107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
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void
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updatexy()
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{
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Window child;
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XTranslateCoordinates(xw.dpy, xw.win, DefaultRootWindow(xw.dpy), 0, 0, &win.x, &win.y, &child);
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}
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/*
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* load farbfeld file to XImage
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*/
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XImage*
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loadff(const char *filename)
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{
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uint32_t i, hdr[4], w, h, size;
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uint64_t *data;
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FILE *f = fopen(filename, "rb");
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if (f == NULL) {
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fprintf(stderr, "could not load background image.\n");
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return NULL;
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}
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if (fread(hdr, sizeof(*hdr), LEN(hdr), f) != LEN(hdr)) {
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fprintf(stderr, "fread: %s\n", ferror(f) ? "" : "Unexpected end of file reading header");
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fclose(f);
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return NULL;
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}
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if (memcmp("farbfeld", hdr, sizeof("farbfeld") - 1)) {
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fprintf(stderr, "Invalid magic value\n");
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fclose(f);
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return NULL;
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}
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w = ntohl(hdr[2]);
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h = ntohl(hdr[3]);
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size = w * h;
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data = xmalloc(size * sizeof(uint64_t));
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if (fread(data, sizeof(uint64_t), size, f) != size) {
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fprintf(stderr, "fread: %s\n", ferror(f) ? "" : "Unexpected end of file reading data");
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fclose(f);
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return NULL;
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}
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fclose(f);
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for (i = 0; i < size; i++)
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data[i] = (data[i] & 0x00000000000000FF) << 16 |
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(data[i] & 0x0000000000FF0000) >> 8 |
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(data[i] & 0x000000FF00000000) >> 32 |
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(data[i] & 0x00FF000000000000) >> 24;
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#if ALPHA_PATCH
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XImage *xi = XCreateImage(xw.dpy, xw.vis, xw.depth, ZPixmap, 0,
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(char *)data, w, h, 32, w * 8);
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#else
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XImage *xi = XCreateImage(xw.dpy, DefaultVisual(xw.dpy, xw.scr),
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DefaultDepth(xw.dpy, xw.scr), ZPixmap, 0,
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(char *)data, w, h, 32, w * 8);
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#endif // ALPHA_PATCH
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xi->bits_per_pixel = 64;
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return xi;
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}
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/*
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* initialize background image
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*/
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void
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bginit()
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{
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XGCValues gcvalues;
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Drawable bgimg;
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XImage *bgxi = loadff(bgfile);
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memset(&gcvalues, 0, sizeof(gcvalues));
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xw.bggc = XCreateGC(xw.dpy, xw.win, 0, &gcvalues);
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if (!bgxi)
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return;
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#if ALPHA_PATCH
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bgimg = XCreatePixmap(xw.dpy, xw.win, bgxi->width, bgxi->height,
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xw.depth);
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#else
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bgimg = XCreatePixmap(xw.dpy, xw.win, bgxi->width, bgxi->height,
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DefaultDepth(xw.dpy, xw.scr));
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#endif // ALPHA_PATCH
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XPutImage(xw.dpy, bgimg, dc.gc, bgxi, 0, 0, 0, 0, bgxi->width, bgxi->height);
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XDestroyImage(bgxi);
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XSetTile(xw.dpy, xw.bggc, bgimg);
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XSetFillStyle(xw.dpy, xw.bggc, FillTiled);
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if (pseudotransparency) {
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updatexy();
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MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
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XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
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}
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}
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#if BACKGROUND_IMAGE_RELOAD_PATCH
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void
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reload_image()
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{
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XFreeGC(xw.dpy, xw.bggc);
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bginit();
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redraw();
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}
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#endif // XRESOURCES_RELOAD_PATCH
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