new rendering engine

crates/client-application/src/client_app.rs

@@ -1,12 +1,16 @@
-use client_domain::{BoundingBox, LayoutEngine, RenderTree};
+use client_domain::{BoundingBox, Color, LayoutEngine, RenderTree, ThemeConfig};
 use domain::LayoutNode;
-use protocol::{ServerMessage, WidgetDescriptor, WireDisplayHint, WireLayoutNode, WireWidgetState};
+use protocol::{
+    ServerMessage, WireColor, WidgetDescriptor, WireDisplayHint, WireLayoutNode, WireWidgetState,
+};
 use std::collections::HashMap;
 
 pub struct ClientApp {
     screen: BoundingBox,
     render_tree: Option<RenderTree>,
     widget_states: HashMap<u16, (WireDisplayHint, WireWidgetState)>,
+    theme: ThemeConfig,
+    theme_changed: bool,
 }
 
 #[derive(Debug, Clone, PartialEq)]
@@ -23,19 +27,47 @@ impl ClientApp {
             screen,
             render_tree: None,
             widget_states: HashMap::new(),
+            theme: ThemeConfig::default(),
+            theme_changed: false,
         }
     }
 
+    pub fn theme(&self) -> &ThemeConfig {
+        &self.theme
+    }
+
+    pub fn take_theme_changed(&mut self) -> bool {
+        let changed = self.theme_changed;
+        self.theme_changed = false;
+        changed
+    }
+
     pub fn handle_message(&mut self, msg: ServerMessage) -> Vec<RepaintCommand> {
         match msg {
             ServerMessage::ScreenUpdate { layout, widgets } => {
                 self.handle_screen_update(layout, widgets)
             }
             ServerMessage::DataUpdate { widgets } => self.handle_data_update(widgets),
+            ServerMessage::ThemeUpdate { theme } => self.handle_theme_update(theme),
             ServerMessage::Heartbeat => Vec::new(),
         }
     }
 
+    fn handle_theme_update(&mut self, wire_theme: protocol::WireTheme) -> Vec<RepaintCommand> {
+        self.theme = ThemeConfig {
+            primary: wire_color(wire_theme.primary),
+            secondary: wire_color(wire_theme.secondary),
+            accent: wire_color(wire_theme.accent),
+            text: wire_color(wire_theme.text),
+            background: wire_color(wire_theme.background),
+        };
+        self.theme_changed = true;
+        match &self.render_tree {
+            Some(tree) => self.build_repaints_for_all(tree),
+            None => Vec::new(),
+        }
+    }
+
     fn handle_screen_update(
         &mut self,
         wire_layout: WireLayoutNode,
@@ -103,3 +135,7 @@ impl ClientApp {
         repaints
     }
 }
+
+fn wire_color(c: WireColor) -> Color {
+    Color(c.r, c.g, c.b)
+}