Extract element functions into modules (#207)

src/element/resizeTest.ts

@@ -0,0 +1,32 @@
+import { ExcalidrawElement } from "./types";
+import { SceneState } from "../scene/types";
+
+import { handlerRectangles } from "./handlerRectangles";
+
+export function resizeTest(
+  element: ExcalidrawElement,
+  x: number,
+  y: number,
+  sceneState: SceneState
+): string | false {
+  if (element.type === "text") return false;
+
+  const handlers = handlerRectangles(element, sceneState);
+
+  const filter = Object.keys(handlers).filter(key => {
+    const handler = handlers[key];
+
+    return (
+      x + sceneState.scrollX >= handler[0] &&
+      x + sceneState.scrollX <= handler[0] + handler[2] &&
+      y + sceneState.scrollY >= handler[1] &&
+      y + sceneState.scrollY <= handler[1] + handler[3]
+    );
+  });
+
+  if (filter.length > 0) {
+    return filter[0];
+  }
+
+  return false;
+}