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Add surface opacity controls.

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This commit is contained in:
Scott Moreau 2012-03-22 11:01:03 -06:00
parent 1b45a79a0a
commit a3aa9c9dd6
1 changed files with 38 additions and 0 deletions
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38
src/shell.c
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@ -1161,6 +1161,41 @@ resize_binding(struct wl_input_device *device, uint32_t time,
time, edges);
}
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)
@ -2070,6 +2105,9 @@ shell_init(struct weston_compositor *ec)
terminate_binding, ec);
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,