Implement explicit text caching in the widget state tree

examples/color_palette/src/main.rs

@@ -3,8 +3,8 @@ use iced::mouse;
 use iced::widget::canvas::{self, Canvas, Frame, Geometry, Path};
 use iced::widget::{column, row, text, Slider};
 use iced::{
-    Color, Element, Length, Point, Rectangle, Renderer, Sandbox, Settings,
-    Size, Vector,
+    Color, Element, Length, Pixels, Point, Rectangle, Renderer, Sandbox,
+    Settings, Size, Vector,
 };
 use palette::{
     self, convert::FromColor, rgb::Rgb, Darken, Hsl, Lighten, ShiftHue,
@@ -168,7 +168,7 @@ impl Theme {
         let mut text = canvas::Text {
             horizontal_alignment: alignment::Horizontal::Center,
             vertical_alignment: alignment::Vertical::Top,
-            size: 15.0,
+            size: Pixels(15.0),
             ..canvas::Text::default()
         };
 

examples/combo_box/src/main.rs

@@ -40,7 +40,6 @@ impl Sandbox for Example {
             Message::Selected(language) => {
                 self.selected_language = Some(language);
                 self.text = language.hello().to_string();
-                self.languages.unfocus();
             }
             Message::OptionHovered(language) => {
                 self.text = language.hello().to_string();

examples/custom_quad/src/main.rs

@@ -36,6 +36,7 @@ mod quad {
 
         fn layout(
             &self,
+            _tree: &widget::Tree,
             _renderer: &Renderer,
             _limits: &layout::Limits,
         ) -> layout::Node {

examples/custom_widget/src/main.rs

@@ -43,6 +43,7 @@ mod circle {
 
         fn layout(
             &self,
+            _tree: &widget::Tree,
             _renderer: &Renderer,
             _limits: &layout::Limits,
         ) -> layout::Node {

examples/game_of_life/src/main.rs

@@ -591,7 +591,7 @@ mod grid {
 
                 let text = Text {
                     color: Color::WHITE,
-                    size: 14.0,
+                    size: 14.0.into(),
                     position: Point::new(frame.width(), frame.height()),
                     horizontal_alignment: alignment::Horizontal::Right,
                     vertical_alignment: alignment::Vertical::Bottom,

examples/geometry/src/main.rs

@@ -26,6 +26,7 @@ mod rainbow {
 
         fn layout(
             &self,
+            _tree: &widget::Tree,
             _renderer: &Renderer,
             limits: &layout::Limits,
         ) -> layout::Node {

examples/integration/src/main.rs

@@ -8,7 +8,7 @@ use iced_wgpu::graphics::Viewport;
 use iced_wgpu::{wgpu, Backend, Renderer, Settings};
 use iced_winit::core::mouse;
 use iced_winit::core::renderer;
-use iced_winit::core::{Color, Size};
+use iced_winit::core::{Color, Font, Pixels, Size};
 use iced_winit::runtime::program;
 use iced_winit::runtime::Debug;
 use iced_winit::style::Theme;
@@ -143,12 +143,11 @@ pub fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // Initialize iced
     let mut debug = Debug::new();
-    let mut renderer = Renderer::new(Backend::new(
-        &device,
-        &queue,
-        Settings::default(),
-        format,
-    ));
+    let mut renderer = Renderer::new(
+        Backend::new(&device, &queue, Settings::default(), format),
+        Font::default(),
+        Pixels(16.0),
+    );
 
     let mut state = program::State::new(
         controls,

examples/loading_spinners/src/circular.rs

@@ -254,6 +254,7 @@ where
 
     fn layout(
         &self,
+        _tree: &Tree,
         _renderer: &iced::Renderer<Theme>,
         limits: &layout::Limits,
     ) -> layout::Node {

examples/loading_spinners/src/linear.rs

@@ -175,6 +175,7 @@ where
 
     fn layout(
         &self,
+        _tree: &Tree,
         _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {

examples/modal/src/main.rs

@@ -285,10 +285,13 @@ mod modal {
 
         fn layout(
             &self,
+            tree: &widget::Tree,
             renderer: &Renderer,
             limits: &layout::Limits,
         ) -> layout::Node {
-            self.base.as_widget().layout(renderer, limits)
+            self.base
+                .as_widget()
+                .layout(&tree.children[0], renderer, limits)
         }
 
         fn on_event(
@@ -408,7 +411,11 @@ mod modal {
                 .width(Length::Fill)
                 .height(Length::Fill);
 
-            let mut child = self.content.as_widget().layout(renderer, &limits);
+            let mut child = self
+                .content
+                .as_widget()
+                .layout(self.tree, renderer, &limits);
+
             child.align(Alignment::Center, Alignment::Center, limits.max());
 
             let mut node = layout::Node::with_children(self.size, vec![child]);

examples/toast/src/main.rs

@@ -326,10 +326,13 @@ mod toast {
 
         fn layout(
             &self,
+            tree: &Tree,
             renderer: &Renderer,
             limits: &layout::Limits,
         ) -> layout::Node {
-            self.content.as_widget().layout(renderer, limits)
+            self.content
+                .as_widget()
+                .layout(&tree.children[0], renderer, limits)
         }
 
         fn tag(&self) -> widget::tree::Tag {
@@ -517,6 +520,7 @@ mod toast {
                 10.0,
                 Alignment::End,
                 self.toasts,
+                self.state,
             )
             .translate(Vector::new(position.x, position.y))
         }

examples/tour/src/main.rs

@@ -5,7 +5,7 @@ use iced::widget::{
     scrollable, slider, text, text_input, toggler, vertical_space,
 };
 use iced::widget::{Button, Column, Container, Slider};
-use iced::{Color, Element, Font, Length, Renderer, Sandbox, Settings};
+use iced::{Color, Element, Font, Length, Pixels, Renderer, Sandbox, Settings};
 
 pub fn main() -> iced::Result {
     env_logger::init();
@@ -571,7 +571,7 @@ impl<'a> Step {
             text_input = text_input.icon(text_input::Icon {
                 font: Font::default(),
                 code_point: '🚀',
-                size: Some(28.0),
+                size: Some(Pixels(28.0)),
                 spacing: 10.0,
                 side: text_input::Side::Right,
             });