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Merge pull request #254 from dermetfan/bg-layer

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transparent StackView layers
This commit is contained in:
Alexandre Bury 2018-06-06 21:37:28 -07:00 committed by GitHub
commit d31903cba9
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1 changed files with 80 additions and 5 deletions
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85
src/views/stack_view.rs
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@ -57,8 +57,10 @@ impl Placement {
enum ChildWrapper<T: View> {
// Some views include a shadow around.
Shadow(ShadowView<Layer<T>>),
// Some include a background.
Backfilled(Layer<T>),
// Some views don't (fullscreen views mostly)
Plain(Layer<T>),
Plain(T),
}
impl<T: View> ChildWrapper<T> {
@ -68,7 +70,11 @@ impl<T: View> ChildWrapper<T> {
ChildWrapper::Shadow(shadow) => {
shadow.into_inner().ok().unwrap().into_inner().ok().unwrap()
}
ChildWrapper::Plain(layer) => layer.into_inner().ok().unwrap(),
// Layer::into_inner can never fail.
ChildWrapper::Backfilled(background) => {
background.into_inner().ok().unwrap()
}
ChildWrapper::Plain(layer) => layer,
}
}
}
@ -78,7 +84,8 @@ impl<T: View> ChildWrapper<T> {
pub fn get_inner(&self) -> &View {
match *self {
ChildWrapper::Shadow(ref shadow) => shadow.get_inner().get_inner(),
ChildWrapper::Plain(ref layer) => layer.get_inner(),
ChildWrapper::Backfilled(ref background) => background.get_inner(),
ChildWrapper::Plain(ref layer) => layer,
}
}
@ -88,7 +95,10 @@ impl<T: View> ChildWrapper<T> {
ChildWrapper::Shadow(ref mut shadow) => {
shadow.get_inner_mut().get_inner_mut()
}
ChildWrapper::Plain(ref mut layer) => layer.get_inner_mut(),
ChildWrapper::Backfilled(ref mut background) => {
background.get_inner_mut()
}
ChildWrapper::Plain(ref mut layer) => layer,
}
}
}
@ -98,6 +108,7 @@ impl<T: View> View for ChildWrapper<T> {
fn draw(&self, printer: &Printer) {
match *self {
ChildWrapper::Shadow(ref v) => v.draw(printer),
ChildWrapper::Backfilled(ref v) => v.draw(printer),
ChildWrapper::Plain(ref v) => v.draw(printer),
}
}
@ -105,6 +116,7 @@ impl<T: View> View for ChildWrapper<T> {
fn on_event(&mut self, event: Event) -> EventResult {
match *self {
ChildWrapper::Shadow(ref mut v) => v.on_event(event),
ChildWrapper::Backfilled(ref mut v) => v.on_event(event),
ChildWrapper::Plain(ref mut v) => v.on_event(event),
}
}
@ -112,6 +124,7 @@ impl<T: View> View for ChildWrapper<T> {
fn layout(&mut self, size: Vec2) {
match *self {
ChildWrapper::Shadow(ref mut v) => v.layout(size),
ChildWrapper::Backfilled(ref mut v) => v.layout(size),
ChildWrapper::Plain(ref mut v) => v.layout(size),
}
}
@ -119,6 +132,7 @@ impl<T: View> View for ChildWrapper<T> {
fn required_size(&mut self, size: Vec2) -> Vec2 {
match *self {
ChildWrapper::Shadow(ref mut v) => v.required_size(size),
ChildWrapper::Backfilled(ref mut v) => v.required_size(size),
ChildWrapper::Plain(ref mut v) => v.required_size(size),
}
}
@ -126,6 +140,7 @@ impl<T: View> View for ChildWrapper<T> {
fn take_focus(&mut self, source: Direction) -> bool {
match *self {
ChildWrapper::Shadow(ref mut v) => v.take_focus(source),
ChildWrapper::Backfilled(ref mut v) => v.take_focus(source),
ChildWrapper::Plain(ref mut v) => v.take_focus(source),
}
}
@ -137,6 +152,9 @@ impl<T: View> View for ChildWrapper<T> {
ChildWrapper::Shadow(ref mut v) => {
v.call_on_any(selector, callback)
}
ChildWrapper::Backfilled(ref mut v) => {
v.call_on_any(selector, callback)
}
ChildWrapper::Plain(ref mut v) => {
v.call_on_any(selector, callback)
}
@ -146,6 +164,7 @@ impl<T: View> View for ChildWrapper<T> {
fn focus_view(&mut self, selector: &Selector) -> Result<(), ()> {
match *self {
ChildWrapper::Shadow(ref mut v) => v.focus_view(selector),
ChildWrapper::Backfilled(ref mut v) => v.focus_view(selector),
ChildWrapper::Plain(ref mut v) => v.focus_view(selector),
}
}
@ -184,7 +203,7 @@ impl StackView {
{
let boxed = ViewBox::boxed(view);
self.layers.push(Child {
view: ChildWrapper::Plain(Layer::new(boxed)),
view: ChildWrapper::Backfilled(Layer::new(boxed)),
size: Vec2::zero(),
placement: Placement::Fullscreen,
virgin: true,
@ -270,6 +289,16 @@ impl StackView {
self.with(|s| s.add_fullscreen_layer(view))
}
/// Adds a new transparent layer on top of the stack.
///
/// Chainable variant.
pub fn transparent_layer<T>(self, view: T) -> Self
where
T: IntoBoxedView,
{
self.with(|s| s.add_transparent_layer(view))
}
/// Adds a view on top of the stack.
pub fn add_layer_at<T>(&mut self, position: Position, view: T)
where
@ -289,6 +318,28 @@ impl StackView {
});
}
/// Adds a transparent view on top of the stack in the center of the screen.
pub fn add_transparent_layer<T>(&mut self, view: T)
where
T: IntoBoxedView,
{
self.add_transparent_layer_at(Position::center(), view);
}
/// Adds a transparent view on top of the stack.
pub fn add_transparent_layer_at<T>(&mut self, position: Position, view: T)
where
T: IntoBoxedView,
{
let boxed = ViewBox::boxed(view);
self.layers.push(Child {
view: ChildWrapper::Plain(boxed),
size: Vec2::new(0, 0),
placement: Placement::Floating(position),
virgin: true,
});
}
/// Adds a view on top of the stack.
///
/// Chainable variant.
@ -617,4 +668,28 @@ mod tests {
assert!(stack.pop_layer().is_none());
}
#[test]
fn get() {
let mut stack = StackView::new()
.layer(TextView::new("1"))
.layer(TextView::new("2"));
assert!(stack.get(LayerPosition::FromFront(0)).unwrap()
.as_any().downcast_ref::<ViewBox>().unwrap()
.with_view(|v| v.as_any().is::<TextView>()).unwrap()
);
assert!(stack.get(LayerPosition::FromBack(0)).unwrap()
.as_any().downcast_ref::<ViewBox>().unwrap()
.with_view(|v| v.as_any().is::<TextView>()).unwrap()
);
assert!(stack.get_mut(LayerPosition::FromFront(0)).unwrap()
.as_any_mut().downcast_mut::<ViewBox>().unwrap()
.with_view_mut(|v| v.as_any_mut().is::<TextView>()).unwrap()
);
assert!(stack.get_mut(LayerPosition::FromBack(0)).unwrap()
.as_any_mut().downcast_mut::<ViewBox>().unwrap()
.with_view_mut(|v| v.as_any_mut().is::<TextView>()).unwrap()
);
}
}