Add surface opacity controls.
diff --git a/src/shell.c b/src/shell.c
index 6e9b159..b26cbf4 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -1162,6 +1162,41 @@
}
static void
+surface_opacity_binding(struct wl_input_device *device, uint32_t time,
+ uint32_t key, uint32_t button, uint32_t axis, int32_t value, void *data)
+{
+ int step = 15;
+ struct shell_surface *shsurf;
+ struct weston_surface *surface =
+ (struct weston_surface *) device->pointer_focus;
+
+ if (surface == NULL)
+ return;
+
+ shsurf = get_shell_surface(surface);
+ if (!shsurf)
+ return;
+
+ switch (shsurf->type) {
+ case SHELL_SURFACE_BACKGROUND:
+ case SHELL_SURFACE_SCREENSAVER:
+ return;
+ default:
+ break;
+ }
+
+ surface->alpha += value * step;
+
+ if (surface->alpha > 255)
+ surface->alpha = 255;
+ if (surface->alpha < step)
+ surface->alpha = step;
+
+ surface->geometry.dirty = 1;
+ weston_surface_damage(surface);
+}
+
+static void
zoom_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t axis, int32_t value, void *data)
{
@@ -2071,6 +2106,9 @@
weston_compositor_add_binding(ec, 0, BTN_LEFT, 0, 0,
click_to_activate_binding, ec);
weston_compositor_add_binding(ec, 0, 0, WL_INPUT_DEVICE_AXIS_VERTICAL_SCROLL,
+ MODIFIER_SUPER | MODIFIER_ALT,
+ surface_opacity_binding, NULL);
+ weston_compositor_add_binding(ec, 0, 0, WL_INPUT_DEVICE_AXIS_VERTICAL_SCROLL,
MODIFIER_SUPER, zoom_binding, NULL);
weston_compositor_add_binding(ec, 0, BTN_LEFT, 0,
MODIFIER_SUPER | MODIFIER_ALT,