Adds mouse support and volume key support

This is for use on my phone

Volume keys can be used to scroll through the items, power can be used
to select an item and tapping an item will also select it

dmenu.c

@@ -15,6 +15,7 @@
 #include <X11/extensions/Xinerama.h>
 #endif
 #include <X11/Xft/Xft.h>
+#include <X11/XF86keysym.h>
 
 #include "drw.h"
 #include "util.h"
@@ -444,6 +445,7 @@ insert:
 		if (lines > 0)
 			return;
 		/* fallthrough */
+	case XF86XK_AudioRaiseVolume:
 	case XK_Up:
 		if (sel && sel->left && (sel = sel->left)->right == curr) {
 			curr = prev;
@@ -462,6 +464,7 @@ insert:
 		sel = curr = prev;
 		calcoffsets();
 		break;
+	case XF86XK_PowerOff:
 	case XK_Return:
 	case XK_KP_Enter:
 		puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
@@ -480,6 +483,7 @@ insert:
 		if (lines > 0)
 			return;
 		/* fallthrough */
+	case XF86XK_AudioLowerVolume:
 	case XK_Down:
 		if (sel && sel->right && (sel = sel->right) == next) {
 			curr = next;
@@ -500,6 +504,119 @@ draw:
 	drawmenu();
 }
 
+static void
+buttonpress(XEvent *e)
+{
+	struct item *item;
+	XButtonPressedEvent *ev = &e->xbutton;
+	int x = 0, y = 0, h = bh, w;
+
+	if (ev->window != win)
+		return;
+
+	/* right-click: exit */
+	if (ev->button == Button3)
+		exit(1);
+
+	if (prompt && *prompt)
+		x += promptw;
+
+	/* input field */
+	w = (lines > 0 || !matches) ? mw - x : inputw;
+
+	/* 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 <= x + w +
+	   ((!prev || !curr->left) ? TEXTW("<") : 0)) ||
+	   (lines > 0 && ev->y >= y && ev->y <= y + h))) {
+		insert(NULL, -cursor);
+		drawmenu();
+		return;
+	}
+	/* middle-mouse click: paste selection */
+	if (ev->button == Button2) {
+		XConvertSelection(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 (ev->state & ~ControlMask)
+	//	return;
+	if (lines > 0) {
+		/* vertical list: (ctrl)left-click on item */
+		w = mw - x;
+		for (item = curr; item != next; item = item->right) {
+			y += h;
+			if (ev->y >= y && ev->y <= (y + h)) {
+				puts(item->text);
+				if (!(ev->state & ControlMask))
+					exit(0);
+				sel = item;
+				if (sel) {
+					sel->out = 1;
+					drawmenu();
+				}
+				return;
+			}
+		}
+	} else if (matches) {
+		/* left-click on left arrow */
+		x += inputw;
+		w = TEXTW("<");
+		if (prev && curr->left) {
+			if (ev->x >= x && ev->x <= x + w) {
+				sel = curr = prev;
+				calcoffsets();
+				drawmenu();
+				return;
+			}
+		}
+		/* horizontal list: (ctrl)left-click on item */
+		for (item = curr; item != next; item = item->right) {
+			x += w;
+			w = MIN(TEXTW(item->text), mw - x - TEXTW(">"));
+			if (ev->x >= x && ev->x <= x + w) {
+				puts(item->text);
+				if (!(ev->state & ControlMask))
+					exit(0);
+				sel = item;
+				if (sel) {
+					sel->out = 1;
+					drawmenu();
+				}
+				return;
+			}
+		}
+		/* left-click on right arrow */
+		w = TEXTW(">");
+		x = mw - w;
+		if (next && ev->x >= x && ev->x <= x + w) {
+			sel = curr = next;
+			calcoffsets();
+			drawmenu();
+			return;
+		}
+	}
+}
+
 static void
 paste(void)
 {
@@ -561,6 +678,9 @@ run(void)
 				break;
 			cleanup();
 			exit(1);
+		case ButtonPress:
+			buttonpress(&ev);
+			break;
 		case Expose:
 			if (ev.xexpose.count == 0)
 				drw_map(drw, win, 0, 0, mw, mh);
@@ -658,7 +778,8 @@ setup(void)
 	/* create menu window */
 	swa.override_redirect = True;
 	swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
-	swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
+	swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask |
+	                 ButtonPressMask;
 	win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
 	                    CopyFromParent, CopyFromParent, CopyFromParent,
 	                    CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);