remove state generic from a lot of things

src/widget/image.rs

@@ -5,24 +5,24 @@ pub struct Image {
     handle: TextureHandle,
 }
 
-impl<State: 'static> Widget<State> for Image {
-    fn draw(&mut self, painter: &mut Painter<State>) {
+impl Widget for Image {
+    fn draw(&mut self, painter: &mut Painter) {
         painter.texture(&self.handle);
     }
 
-    fn desired_width(&mut self, _: &mut SizeCtx<State>) -> Len {
+    fn desired_width(&mut self, _: &mut SizeCtx) -> Len {
         Len::abs(self.handle.size().x)
     }
 
-    fn desired_height(&mut self, _: &mut SizeCtx<State>) -> Len {
+    fn desired_height(&mut self, _: &mut SizeCtx) -> Len {
         Len::abs(self.handle.size().y)
     }
 }
 
-pub fn image<State: 'static>(image: impl LoadableImage) -> impl WidgetFn<State, Image> {
+pub fn image<State: HasUi>(image: impl LoadableImage) -> impl WidgetFn<State, Image> {
     let image = image.get_image().expect("Failed to load image");
-    move |ui| Image {
-        handle: ui.add_texture(image),
+    move |state| Image {
+        handle: state.ui().add_texture(image),
     }
 }