ports/main/dmenu/dmenu-4.5-mouse-support.diff

diff --git a/dmenu.c b/dmenu.c
index 3962801..a75bf80 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -25,6 +25,7 @@ struct Item {
 };
 
 static void appenditem(Item *item, Item **list, Item **last);
+static void buttonpress(XEvent *e);
 static void calcoffsets(void);
 static char *cistrstr(const char *s, const char *sub);
 static void drawmenu(void);
@@ -388,6 +390,109 @@ keypress(XKeyEvent *ev) {
 }
 
 void
+buttonpress(XEvent *e) {
+	int curpos;
+	Item *item;
+	XButtonPressedEvent *ev = &e->xbutton;
+
+	if(ev->window != win)
+		return;
+
+	/* right-click: exit */
+	if(ev->button == Button3)
+		exit(EXIT_FAILURE);
+
+	dc->x = 0;
+	dc->y = 0;
+	dc->h = bh;
+
+	if(prompt && *prompt) {
+		dc->w = promptw;
+		dc->x = dc->w;
+	}
+	/* input field */
+	dc->w = (lines > 0 || !matches) ? mw - dc->x : inputw;
+	if((curpos = textnw(dc, text, cursor) + dc->h/2 - 2) < dc->w);
+
+	/* left-click on input: clear input,
+	 * NOTE: if there is no left-arrow the space for < is reserved so
+	 *       add that to the input width */
+	if(ev->button == Button1 &&
+	   ((lines <= 0 && ev->x >= 0 && ev->x <= dc->x + dc->w +
+	   ((!prev || !curr->left) ? textw(dc, "<") : 0)) ||
+	   (lines > 0 && ev->y >= dc->y && ev->y <= dc->y + dc->h))) {
+		insert(NULL, 0 - cursor);
+		drawmenu();
+		return;
+	}
+	/* middle-mouse click: paste selection */
+	if(ev->button == Button2) {
+		XConvertSelection(dc->dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
+		                  utf8, utf8, win, CurrentTime);
+		drawmenu();
+		return;
+	}
+	/* scroll up */
+	if(ev->button == Button4 && prev) {
+		sel = curr = prev;
+		calcoffsets();
+		drawmenu();
+		return;
+	}
+	/* scroll down */
+	if(ev->button == Button5 && next) {
+		sel = curr = next;
+		calcoffsets();
+		drawmenu();
+		return;
+	}
+	if(ev->button != Button1)
+		return;
+	if(lines > 0) {
+		/* vertical list: left-click on item */
+		dc->w = mw - dc->x;
+		for(item = curr; item != next; item = item->right) {
+			dc->y += dc->h;
+			if(ev->y >= dc->y && ev->y <= (dc->y + dc->h)) {
+				puts(item->text);
+				exit(EXIT_SUCCESS);
+			}
+		}
+	}
+	else if(matches) {
+		/* left-click on left arrow */
+		dc->x += inputw;
+		dc->w = textw(dc, "<");
+		if(prev && curr->left) {
+			if(ev->x >= dc->x && ev->x <= dc->x + dc->w) {
+				sel = curr = prev;
+				calcoffsets();
+				drawmenu();
+				return;
+			}
+		}
+		/* horizontal list: left-click on item */
+		for(item = curr; item != next; item = item->right) {
+			dc->x += dc->w;
+			dc->w = MIN(textw(dc, item->text), mw - dc->x - textw(dc, ">"));
+			if(ev->x >= dc->x && ev->x <= (dc->x + dc->w)) {
+				puts(item->text);
+				exit(EXIT_SUCCESS);
+			}
+		}
+		/* left-click on right arrow */
+		dc->w = textw(dc, ">");
+		dc->x = mw - dc->w;
+		if(next && ev->x >= dc->x && ev->x <= dc->x + dc->w) {
+			sel = curr = next;
+			calcoffsets();
+			drawmenu();
+			return;
+		}
+	}
+}
+
+void
 match(void) {
 	static char **tokv = NULL;
 	static int tokn = 0;
@@ -496,6 +601,9 @@ run(void) {
 		if(XFilterEvent(&ev, win))
 			continue;
 		switch(ev.type) {
+		case ButtonPress:
+			buttonpress(&ev);
+			break;
 		case Expose:
 			if(ev.xexpose.count == 0)
 				mapdc(dc, win, mw, mh);
@@ -585,8 +693,9 @@ setup(void) {
	/* create menu window */
	swa.override_redirect = True;
	swa.background_pixel = normcol->BG;
-	swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
+	swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask |
+	                 ButtonPressMask;
	win = XCreateWindow(dc->dpy, root, x, y, mw, mh, 0,
	                    DefaultDepth(dc->dpy, screen), CopyFromParent,
	                    DefaultVisual(dc->dpy, screen),
	                    CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);