Pan scene with scroll gesture

plugin-tiled/src/main/java/games/rednblack/editor/plugin/tiled/tools/DeleteTileTool.java

@@ -56,8 +56,8 @@ public class DeleteTileTool implements Tool {
     }
 
     @Override
-    public void stageMouseScrolled(float amountX, float amountY) {
-
+    public boolean stageMouseScrolled(float amountX, float amountY) {
+        return false;
     }
 
     @Override

plugin-tiled/src/main/java/games/rednblack/editor/plugin/tiled/tools/DrawTileTool.java

@@ -67,8 +67,8 @@ public class DrawTileTool implements Tool {
     }
 
     @Override
-    public void stageMouseScrolled(float amountX, float amountY) {
-
+    public boolean stageMouseScrolled(float amountX, float amountY) {
+        return false;
     }
 
     @Override

src/main/java/games/rednblack/editor/view/stage/SandboxMediator.java

@@ -431,19 +431,20 @@ public class SandboxMediator extends Mediator<Sandbox> {
         public boolean scrolled(Entity entity, float amountX, float amountY) {
             Sandbox sandbox = Sandbox.getInstance();
             // well, duh
-            if (amountX == 0) return false;
+            if (amountX == 0 && amountY == 0) return false;
 
             // Control pressed as well
             if (isControlPressed()) {
                 float zoomPercent = sandbox.getZoomPercent();
-                zoomPercent-= amountX *4f;
+                zoomPercent-= amountY * 4f;
                 if(zoomPercent < 5 ) zoomPercent = 5;
 
                 sandbox.setZoomPercent(zoomPercent, true);
-            }
-
-            if (currentSelectedTool != null) {
-                currentSelectedTool.stageMouseScrolled(amountX, amountY);
+            } else {
+                if (currentSelectedTool != null
+                        && !currentSelectedTool.stageMouseScrolled(amountX, amountY)) {
+                    viewComponent.panSceneBy(amountX * 10f, -amountY * 10f);
+                }
             }
 
             return false;

src/main/java/games/rednblack/editor/view/stage/input/InputListener.java

@@ -4,20 +4,20 @@ import com.badlogic.ashley.core.Entity;
 
 public interface InputListener {
 	
-	public boolean keyDown(Entity entity, int keycode);
+	boolean keyDown(Entity entity, int keycode);
 	
-	public boolean keyUp(Entity entity, int keycode);
+	boolean keyUp(Entity entity, int keycode);
 	
-	public boolean keyTyped(Entity entity, char character);
+	boolean keyTyped(Entity entity, char character);
 
-	public boolean touchDown(Entity entity, float screenX, float screenY, int pointer, int button);
+	boolean touchDown(Entity entity, float screenX, float screenY, int pointer, int button);
 	
-	public void touchUp(Entity entity, float screenX, float screenY, int pointer, int button);
+	void touchUp(Entity entity, float screenX, float screenY, int pointer, int button);
 	
-	public void touchDragged(Entity entity, float screenX, float screenY, int pointer);
+	void touchDragged(Entity entity, float screenX, float screenY, int pointer);
 	
-	public boolean mouseMoved(Entity entity, float screenX, float screenY);
+	boolean mouseMoved(Entity entity, float screenX, float screenY);
 	
-	public boolean scrolled(Entity entity, float amountX, float amountY);
+	boolean scrolled(Entity entity, float amountX, float amountY);
 
 }

src/main/java/games/rednblack/editor/view/stage/tools/PanTool.java

@@ -61,8 +61,8 @@ public class PanTool extends SimpleTool {
     }
 
     @Override
-    public void stageMouseScrolled(float amountX, float amountY) {
-
+    public boolean stageMouseScrolled(float amountX, float amountY) {
+        return false;
     }
 
     @Override

src/main/java/games/rednblack/editor/view/stage/tools/SelectionTool.java

@@ -276,7 +276,7 @@ public class SelectionTool extends SimpleTool {
     }
 
     @Override
-    public void stageMouseScrolled(float amountX, float amountY) {
+    public boolean stageMouseScrolled(float amountX, float amountY) {
         if (isItemDown) {
             for (Entity itemInstance : sandbox.getSelector().getCurrentSelection()) {
                 transformComponent = ComponentRetriever.get(itemInstance, TransformComponent.class);
@@ -293,6 +293,8 @@ public class SelectionTool extends SimpleTool {
                 HyperLap2DFacade.getInstance().sendNotification(MsgAPI.ITEM_DATA_UPDATED, itemInstance);
             }
         }
+
+        return isItemDown;
     }
 
     @Override