Change drag events in the map editor into pointer down events (#118)

* fix: change map painting from on drag to on pointer down

* fix: change tilepicker selection from on drag to on pointer down

* chore: stop using deprecated `image::GenericImageView::bounds`

crates/components/src/tilepicker.rs

@@ -274,7 +274,9 @@ impl Tilepicker {
         };
         let pos = ((pos - canvas_rect.min) / 32.).to_pos2();
 
-        if response.dragged_by(egui::PointerButton::Primary) {
+        if response.is_pointer_button_down_on()
+            && ui.input(|i| i.pointer.button_down(egui::PointerButton::Primary))
+        {
             let drag_origin = if let Some(drag_origin) = self.drag_origin {
                 drag_origin
             } else {

crates/graphics/src/tiles/atlas.rs

@@ -399,7 +399,8 @@ fn write_texture_region<P>(
     P: image::Pixel,
     P::Subpixel: bytemuck::Pod,
 {
-    let (x, y, width, height) = image.bounds();
+    let (x, y) = image.offsets();
+    let (width, height) = image.dimensions();
     let bytes = bytemuck::cast_slice(image.inner().as_raw());
 
     let inner_width = image.inner().width();

crates/ui/src/tabs/map/mod.rs

@@ -418,8 +418,11 @@ impl luminol_core::Tab for Tab {
                     }
 
                     // Tile drawing
-                    if response.dragged_by(egui::PointerButton::Primary)
-                        && !ui.input(|i| i.modifiers.command)
+                    if response.is_pointer_button_down_on()
+                        && ui.input(|i| {
+                            i.pointer.button_down(egui::PointerButton::Primary)
+                                && !i.modifiers.command
+                        })
                     {
                         self.handle_brush(
                             map_x as usize,