feat: image cropping (#8613)

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

packages/excalidraw/actions/actionCropEditor.tsx

@@ -0,0 +1,55 @@
+import { register } from "./register";
+import { cropIcon } from "../components/icons";
+import { StoreAction } from "../store";
+import { ToolButton } from "../components/ToolButton";
+import { t } from "../i18n";
+import { isImageElement } from "../element/typeChecks";
+import type { ExcalidrawImageElement } from "../element/types";
+
+export const actionToggleCropEditor = register({
+  name: "cropEditor",
+  label: "helpDialog.cropStart",
+  icon: cropIcon,
+  viewMode: true,
+  trackEvent: { category: "menu" },
+  keywords: ["image", "crop"],
+  perform(elements, appState, _, app) {
+    const selectedElement = app.scene.getSelectedElements({
+      selectedElementIds: appState.selectedElementIds,
+      includeBoundTextElement: true,
+    })[0] as ExcalidrawImageElement;
+
+    return {
+      appState: {
+        ...appState,
+        isCropping: false,
+        croppingElementId: selectedElement.id,
+      },
+      storeAction: StoreAction.CAPTURE,
+    };
+  },
+  predicate: (elements, appState, _, app) => {
+    const selectedElements = app.scene.getSelectedElements(appState);
+    if (
+      !appState.croppingElementId &&
+      selectedElements.length === 1 &&
+      isImageElement(selectedElements[0])
+    ) {
+      return true;
+    }
+    return false;
+  },
+  PanelComponent: ({ appState, updateData, app }) => {
+    const label = t("helpDialog.cropStart");
+
+    return (
+      <ToolButton
+        type="button"
+        icon={cropIcon}
+        title={label}
+        aria-label={label}
+        onClick={() => updateData(null)}
+      />
+    );
+  },
+});

packages/excalidraw/actions/index.ts

@@ -88,3 +88,5 @@ export { actionToggleElementLock } from "./actionElementLock";
 export { actionToggleLinearEditor } from "./actionLinearEditor";
 
 export { actionToggleSearchMenu } from "./actionToggleSearchMenu";
+
+export { actionToggleCropEditor } from "./actionCropEditor";

packages/excalidraw/actions/types.ts

@@ -134,7 +134,8 @@ export type ActionName =
   | "commandPalette"
   | "autoResize"
   | "elementStats"
-  | "searchMenu";
+  | "searchMenu"
+  | "cropEditor";
 
 export type PanelComponentProps = {
   elements: readonly ExcalidrawElement[];