Add Context::copy_text

crates/egui/src/context.rs

@@ -927,6 +927,19 @@ impl Context {
         self.output_mut(|o| o.open_url = Some(open_url));
     }
 
+    /// Copy the given text to the system clipboard.
+    ///
+    /// Empty strings are ignored.
+    ///
+    /// Equivalent to:
+    /// ```
+    /// # let ctx = egui::Context::default();
+    /// ctx.output_mut(|o| o.copied_text = "Copy this".to_owned();
+    /// ```
+    pub fn copy_text(&self, text: String) {
+        self.output_mut(|o| o.copied_text = text);
+    }
+
     /// Format the given shortcut in a human-readable way (e.g. `Ctrl+Shift+X`).
     ///
     /// Can be used to get the text for [`Button::shortcut_text`].

crates/egui/src/widgets/color_picker.rs

@@ -234,9 +234,9 @@ fn color_text_ui(ui: &mut Ui, color: impl Into<Color32>, alpha: Alpha) {
 
         if ui.button("📋").on_hover_text("Click to copy").clicked() {
             if alpha == Alpha::Opaque {
-                ui.output_mut(|o| o.copied_text = format!("{r}, {g}, {b}"));
+                ui.ctx().copy_text(format!("{r}, {g}, {b}"));
             } else {
-                ui.output_mut(|o| o.copied_text = format!("{r}, {g}, {b}, {a}"));
+                ui.ctx().copy_text(format!("{r}, {g}, {b}, {a}"));
             }
         }
 

crates/egui/src/widgets/text_edit/builder.rs

@@ -900,7 +900,7 @@ fn events(
 
     let copy_if_not_password = |ui: &Ui, text: String| {
         if !password {
-            ui.ctx().output_mut(|o| o.copied_text = text);
+            ui.ctx().copy_text(text);
         }
     };
 

crates/egui_demo_app/src/apps/http_app.rs

@@ -195,7 +195,7 @@ fn ui_resource(ui: &mut egui::Ui, resource: &Resource) {
             if let Some(text) = &text {
                 let tooltip = "Click to copy the response body";
                 if ui.button("📋").on_hover_text(tooltip).clicked() {
-                    ui.output_mut(|o| o.copied_text = text.clone());
+                    ui.ctx().copy_text(text.clone());
                 }
                 ui.separator();
             }

crates/egui_demo_lib/src/demo/font_book.rs

@@ -93,7 +93,7 @@ impl super::View for FontBook {
                         };
 
                         if ui.add(button).on_hover_ui(tooltip_ui).clicked() {
-                            ui.output_mut(|o| o.copied_text = chr.to_string());
+                            ui.ctx().copy_text(chr.to_string());
                         }
                     }
                 }

examples/puffin_profiler/src/main.rs

@@ -28,7 +28,7 @@ impl eframe::App for MyApp {
             ui.horizontal(|ui| {
                 ui.monospace(cmd);
                 if ui.small_button("📋").clicked() {
-                    ui.output_mut(|o| o.copied_text = cmd.into());
+                    ui.ctx().copy_text(cmd.into());
                 }
             });