Adding tagpreview patch (#271)

1 files changed, 95 insertions, 0 deletions

diff --git a/patch/bar_tagpreview.c b/patch/bar_tagpreview.c
new file mode 100644
index 0000000..c92d05f
--- /dev/null
+++ b/patch/bar_tagpreview.c
@@ -0,0 +1,95 @@
+#include <Imlib2.h>
+
+void
+showtagpreview(int tag, int x, int y)
+{
+	if (selmon->tagmap[tag]) {
+		XSetWindowBackgroundPixmap(dpy, selmon->tagwin, selmon->tagmap[tag]);
+		XCopyArea(dpy, selmon->tagmap[tag], selmon->tagwin, drw->gc, 0, 0, selmon->mw / scalepreview, selmon->mh / scalepreview, 0, 0);
+		XMoveWindow(dpy, selmon->tagwin, x, y);
+		XSync(dpy, False);
+		XMapWindow(dpy, selmon->tagwin);
+	} else
+		XUnmapWindow(dpy, selmon->tagwin);
+}
+
+void
+hidetagpreview(Monitor *m)
+{
+	m->previewshow = 0;
+	XUnmapWindow(dpy, m->tagwin);
+}
+
+void
+tagpreviewswitchtag(void)
+{
+	int i;
+	unsigned int occ = 0;
+	Client *c;
+	Imlib_Image image;
+
+	for (c = selmon->clients; c; c = c->next)
+		occ |= c->tags;
+	for (i = 0; i < NUMTAGS; i++) {
+		if (selmon->tagset[selmon->seltags] & 1 << i) {
+					if (selmon->tagmap[i] != 0) {
+				XFreePixmap(dpy, selmon->tagmap[i]);
+				selmon->tagmap[i] = 0;
+			}
+			if (occ & 1 << i) {
+				image = imlib_create_image(sw, sh);
+				imlib_context_set_image(image);
+				imlib_context_set_display(dpy);
+				#if BAR_ALPHA_PATCH
+				imlib_image_set_has_alpha(1);
+				imlib_context_set_blend(0);
+				imlib_context_set_visual(visual);
+				#else
+				imlib_context_set_visual(DefaultVisual(dpy, screen));
+				#endif // BAR_ALPHA_PATCH
+				imlib_context_set_drawable(root);
+				imlib_copy_drawable_to_image(0, selmon->mx, selmon->my, selmon->mw ,selmon->mh, 0, 0, 1);
+				#if BAR_ALPHA_PATCH
+				selmon->tagmap[i] = XCreatePixmap(dpy, selmon->tagwin, selmon->mw / scalepreview, selmon->mh / scalepreview, depth);
+				#else
+				selmon->tagmap[i] = XCreatePixmap(dpy, selmon->tagwin, selmon->mw / scalepreview, selmon->mh / scalepreview, DefaultDepth(dpy, screen));
+				#endif // BAR_ALPHA_PATCH
+				imlib_context_set_drawable(selmon->tagmap[i]);
+				imlib_render_image_part_on_drawable_at_size(0, 0, selmon->mw, selmon->mh, 0, 0, selmon->mw / scalepreview, selmon->mh / scalepreview);
+				imlib_free_image();
+			}
+		}
+	}
+}
+
+void
+updatepreview(void)
+{
+	Monitor *m;
+
+	XSetWindowAttributes wa = {
+		.override_redirect = True,
+		#if BAR_ALPHA_PATCH
+		.background_pixel = 0,
+		.border_pixel = 0,
+		.colormap = cmap,
+		#else
+		.background_pixmap = ParentRelative,
+		#endif // BAR_ALPHA_PATCH
+		.event_mask = ButtonPressMask|ExposureMask
+	};
+	for (m = mons; m; m = m->next) {
+		m->tagwin = XCreateWindow(dpy, root, m->wx, m->bar->by + bh, m->mw / 4, m->mh / 4, 0,
+				#if BAR_ALPHA_PATCH
+				depth, CopyFromParent, visual,
+				CWOverrideRedirect|CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &wa
+				#else
+				DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
+				CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa
+				#endif // BAR_ALPHA_PATCH
+				);
+		XDefineCursor(dpy, m->tagwin, cursor[CurNormal]->cursor);
+		XMapRaised(dpy, m->tagwin);
+		XUnmapWindow(dpy, m->tagwin);
+	}
+}