Add an icon to represent the currently selected paintbrush

hex-grid/src/main.rs

@@ -44,6 +44,7 @@ fn main() {
 
 pub struct HexGridWindowPrivate {
     layout: gtk::Box,
+    paintbrush_icon: gtk::Box,
     palette: gtk::ListBox,
 
     drawing_area: DrawingArea,
@@ -51,6 +52,7 @@ pub struct HexGridWindowPrivate {
     canvas_address: labeled_field::LabeledField,
 
     current_coordinate: Rc<RefCell<Option<AxialAddr>>>,
+    paintbrush: Rc<RefCell<Option<tile::Tile>>>,
 }
 
 #[glib::object_subclass]
@@ -95,10 +97,12 @@ impl ObjectSubclass for HexGridWindowPrivate {
         let canvas_address = labeled_field::LabeledField::new("Canvas Address", "-----");
         let hex_address = labeled_field::LabeledField::new("Hex Address", "-----");
 
+        let paintbrush_icon = gtk::Box::new(gtk::Orientation::Horizontal, 0);
         let palette = gtk::ListBox::builder().hexpand(true).build();
 
         sidebar.append(&canvas_address);
         sidebar.append(&hex_address);
+        sidebar.append(&paintbrush_icon);
         sidebar.append(&palette);
 
         layout.append(&drawing_area);
@@ -113,6 +117,8 @@ impl ObjectSubclass for HexGridWindowPrivate {
             current_coordinate,
             layout,
             palette,
+            paintbrush_icon,
+            paintbrush: Rc::new(RefCell::new(None)),
         }
     }
 }
@@ -150,6 +156,12 @@ impl ObjectImpl for HexGridWindowPrivate {
         let shallow_water = tile::Tile::new(&image, tile::Terrain::ShallowWater);
         let swamp = tile::Tile::new(&image, tile::Terrain::Swamp);
 
+        let paintbrush_image = gtk::Image::from_pixbuf(Some(&grasslands.image));
+        paintbrush_image.set_width_request(100);
+        paintbrush_image.set_height_request(88);
+        self.paintbrush_icon.append(&paintbrush_image);
+        *self.paintbrush.borrow_mut() = Some(grasslands.clone());
+
         self.palette
             .append(&palette_entry::PaletteEntry::new(&badlands));
         self.palette
@@ -165,11 +177,26 @@ impl ObjectImpl for HexGridWindowPrivate {
         self.palette
             .append(&palette_entry::PaletteEntry::new(&swamp));
 
-        self.palette.connect_selected_rows_changed(|palette| {
-            let row: Option<palette_entry::PaletteEntry> =
-                palette.selected_row().and_then(|r| r.downcast().ok());
-            println!("selected rows changed to: {:?}", row.map(|r| r.terrain()));
-        });
+        {
+            let paintbrush = self.paintbrush.clone();
+            let image = image.clone();
+            let paintbrush_icon = self.paintbrush_icon.clone();
+            self.palette.connect_selected_rows_changed(move |palette| {
+                let row: Option<palette_entry::PaletteEntry> =
+                    palette.selected_row().and_then(|r| r.downcast().ok());
+                if let Some(row) = row {
+                    let new_tile = tile::Tile::new(&image, row.terrain());
+                    *paintbrush.borrow_mut() = Some(new_tile.clone());
+                    while let Some(icon) = paintbrush_icon.first_child() {
+                        paintbrush_icon.remove(&icon);
+                    }
+                    let image = gtk::Image::from_pixbuf(Some(&new_tile.image));
+                    image.set_width_request(100);
+                    image.set_height_request(88);
+                    paintbrush_icon.append(&image);
+                }
+            });
+        }
 
         let motion_controller = gtk::EventControllerMotion::new();
         {

hex-grid/src/tile.rs

@@ -58,6 +58,7 @@ impl From<&Terrain> for String {
     }
 }
 
+#[derive(Clone)]
 pub struct Tile {
     pub terrain: Terrain,
     pub image: Pixbuf,