From e61da07522a060da98fa3a56db3d0360469b26cf Mon Sep 17 00:00:00 2001
From: auric <104602845+ihateamongus@users.noreply.github.com>
Date: Mon, 8 Sep 2025 21:19:14 -0500
Subject: organize repository layout

---
 archive/st/patch/background_image_x.c | 106 ++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 archive/st/patch/background_image_x.c

(limited to 'archive/st/patch/background_image_x.c')

diff --git a/archive/st/patch/background_image_x.c b/archive/st/patch/background_image_x.c
new file mode 100644
index 0000000..3bbb189
--- /dev/null
+++ b/archive/st/patch/background_image_x.c
@@ -0,0 +1,106 @@
+void
+updatexy()
+{
+	Window child;
+	XTranslateCoordinates(xw.dpy, xw.win, DefaultRootWindow(xw.dpy), 0, 0, &win.x, &win.y, &child);
+}
+
+/*
+ * load farbfeld file to XImage
+ */
+XImage*
+loadff(const char *filename)
+{
+	uint32_t i, hdr[4], w, h, size;
+	uint64_t *data;
+	FILE *f = fopen(filename, "rb");
+
+	if (f == NULL) {
+		fprintf(stderr, "could not load background image.\n");
+		return NULL;
+	}
+
+	if (fread(hdr, sizeof(*hdr), LEN(hdr), f) != LEN(hdr)) {
+		fprintf(stderr, "fread: %s\n", ferror(f) ? "" : "Unexpected end of file reading header");
+		fclose(f);
+		return NULL;
+	}
+
+	if (memcmp("farbfeld", hdr, sizeof("farbfeld") - 1)) {
+		fprintf(stderr, "Invalid magic value\n");
+		fclose(f);
+		return NULL;
+	}
+
+	w = ntohl(hdr[2]);
+	h = ntohl(hdr[3]);
+	size = w * h;
+	data = xmalloc(size * sizeof(uint64_t));
+
+	if (fread(data, sizeof(uint64_t), size, f) != size) {
+		fprintf(stderr, "fread: %s\n", ferror(f) ? "" : "Unexpected end of file reading data");
+		fclose(f);
+		return NULL;
+	}
+
+	fclose(f);
+
+	for (i = 0; i < size; i++)
+		 data[i] = (data[i] & 0x00000000000000FF) << 16 |
+		           (data[i] & 0x0000000000FF0000) >> 8  |
+		           (data[i] & 0x000000FF00000000) >> 32 |
+		           (data[i] & 0x00FF000000000000) >> 24;
+
+	#if ALPHA_PATCH
+	XImage *xi = XCreateImage(xw.dpy, xw.vis, xw.depth, ZPixmap, 0,
+		(char *)data, w, h, 32, w * 8);
+	#else
+	XImage *xi = XCreateImage(xw.dpy, DefaultVisual(xw.dpy, xw.scr),
+		DefaultDepth(xw.dpy, xw.scr), ZPixmap, 0,
+		(char *)data, w, h, 32, w * 8);
+	#endif // ALPHA_PATCH
+	xi->bits_per_pixel = 64;
+	return xi;
+}
+
+/*
+ * initialize background image
+ */
+void
+bginit()
+{
+	XGCValues gcvalues;
+	Drawable bgimg;
+	XImage *bgxi = loadff(bgfile);
+
+	memset(&gcvalues, 0, sizeof(gcvalues));
+	xw.bggc = XCreateGC(xw.dpy, xw.win, 0, &gcvalues);
+	if (!bgxi)
+		return;
+	#if ALPHA_PATCH
+	bgimg = XCreatePixmap(xw.dpy, xw.win, bgxi->width, bgxi->height,
+		xw.depth);
+	#else
+	bgimg = XCreatePixmap(xw.dpy, xw.win, bgxi->width, bgxi->height,
+		DefaultDepth(xw.dpy, xw.scr));
+	#endif // ALPHA_PATCH
+	XPutImage(xw.dpy, bgimg, dc.gc, bgxi, 0, 0, 0, 0, bgxi->width, bgxi->height);
+	XDestroyImage(bgxi);
+	XSetTile(xw.dpy, xw.bggc, bgimg);
+	XSetFillStyle(xw.dpy, xw.bggc, FillTiled);
+	if (pseudotransparency) {
+		updatexy();
+		MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
+		XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
+	}
+}
+
+#if BACKGROUND_IMAGE_RELOAD_PATCH
+void
+reload_image()
+{
+	XFreeGC(xw.dpy, xw.bggc);
+	bginit();
+	redraw();
+}
+#endif // XRESOURCES_RELOAD_PATCH
-- 
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