image add imageScale

doric-js/lib/src/widget/image.d.ts

@@ -48,6 +48,13 @@ export declare class Image extends View {
         width: number;
         height: number;
     } | undefined) => void;
+    /**
+     * Default is Environment.screenScale.
+     */
+    imageScale?: number;
+    /**
+     * Unit in pixel
+     */
     stretchInset?: {
         left: number;
         top: number;

doric-js/lib/src/widget/image.js

@@ -82,6 +82,10 @@ __decorate([
     Property,
     __metadata("design:type", Function)
 ], Image.prototype, "loadCallback", void 0);
+__decorate([
+    Property,
+    __metadata("design:type", Number)
+], Image.prototype, "imageScale", void 0);
 __decorate([
     Property,
     __metadata("design:type", Object)