Commit 9a35f40

nsxiv9a35f40

main.c: add zooming on mousewheel events

+27 −0

1 file changed

−Context 3+

M main.c View

		@@ -31,10 +31,12 @@
31	31
32	32		void on_keypress(XEvent*);
33	33		void on_configurenotify(XEvent*);
	34	+	void on_buttonpress(XEvent*);
34	35
35	36		void update_title();
36	37
37	38		static void (handler[LASTEvent])(XEvent) = {
	39	+	[ButtonPress] = on_buttonpress,
38	40		[KeyPress] = on_keypress,
39	41		[ConfigureNotify] = on_configurenotify
40	42		};
		@@ -126,6 +128,31 @@ void cleanup() {
126	128		}
127	129		}
128	130
	131	+	void on_buttonpress(XEvent *ev) {
	132	+	int changed;
	133	+	XButtonEvent *buttonevent;
	134	+
	135	+	changed = 0;
	136	+	buttonevent = &ev->xbutton;
	137	+
	138	+	switch (buttonevent->button) {
	139	+	case Button4:
	140	+	changed = img_zoom_in(&img);
	141	+	break;
	142	+	case Button5:
	143	+	changed = img_zoom_out(&img);
	144	+	break;
	145	+	default:
	146	+	return;
	147	+	}
	148	+
	149	+	if (changed) {
	150	+	img_render(&img, &win);
	151	+	update_title();
	152	+	timeout = 0;
	153	+	}
	154	+	}
	155	+
129	156		void on_keypress(XEvent *ev) {
130	157		char key;
131	158		KeySym keysym;