Add nodes from egui

board-builder-impl-egui/src/main.rs

@@ -20,8 +20,10 @@ struct BoardBuilderApp {
     texture: Option<TextureHandle>,
     image: Option<image::DynamicImage>,
     edit_mode: EditMode,
+    create_node_dialog: CreateNodeDialog,
 }
 
+#[derive(Clone, Copy)]
 enum EditMode {
     Nodes,
     Edges,
@@ -92,8 +94,35 @@ impl eframe::App for BoardBuilderApp {
                 image.paint_at(ui, response.rect);
                 let view = View(response.rect);
                 self.draw_board(&painter, view);
+		if let Some(pos) = response.interact_pointer_pos() {
+		    let btn = if response.clicked() {
+			PointerButton::Primary
+		    } else if response.secondary_clicked() {
+			PointerButton::Secondary
+		    } else {
+			PointerButton::Middle
+		    };
+		    let (x, y) = view.to_coords(pos);
+		    self.dispatch_click(btn, x, y);
+		}
             }
         });
+	if self.create_node_dialog.open {
+	    Window::new("Create Node")
+		.collapsible(false)
+		.show(ctx, |ui| {
+		    ui.label("Name:");
+		    ui.text_edit_singleline(&mut self.create_node_dialog.name);
+		    if ui.button("Add").clicked() {
+			self.create_node_dialog.close();
+			self.board.add_node(
+			    self.create_node_dialog.x,
+			    self.create_node_dialog.y,
+			    self.create_node_dialog.name.clone(),
+			)
+		    }
+		});
+	}
     }
 }
 
@@ -142,10 +171,41 @@ impl BoardBuilderApp {
             }
         }
     }
+
+    fn dispatch_click(&mut self, btn: PointerButton, x: f32, y: f32) {
+	use EditMode::*;
+	use PointerButton::*;
+	match (btn, self.edit_mode) {
+	    (Primary, Nodes) => self.create_node_dialog.show(x, y),
+	    _ => {},
+	}
+    }
 }
 
+#[derive(Clone, Copy)]
 struct View(Rect);
 impl CoordTransformer<Pos2> for View {
     fn origin(&self) -> Pos2 { self.0.min }
     fn extremes(&self) -> Pos2 { self.0.max }
 }
+
+#[derive(Default)]
+struct CreateNodeDialog {
+    open: bool,
+    name: String,
+    x: f32,
+    y: f32,
+}
+
+impl CreateNodeDialog {
+    fn show(&mut self, x: f32, y: f32) {
+	self.open = true;
+	self.x = x;
+	self.y = y;
+	self.name = String::new();
+    }
+
+    fn close(&mut self) {
+	self.open = false;
+    }
+}