diff --git a/packages/board/src/index.ts b/packages/board/src/index.ts
index aa882ea97..bc06c332a 100644
--- a/packages/board/src/index.ts
+++ b/packages/board/src/index.ts
@@ -278,6 +278,10 @@ export class Board<T extends BoardExtendEvent = BoardExtendEvent> {
     return this._sharer;
   }
 
+  getViewer() {
+    return this._viewer;
+  }
+
   setData(data: Data): { viewSizeInfo: ViewSizeInfo } {
     const sharer = this._sharer;
     this._sharer.setActiveStorage('data', data);
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index c9fafb0b4..3a02606fa 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -56,6 +56,8 @@ export class Core {
 
   scale(opts: { scale: number; point: PointSize }) {
     this._board.scale(opts);
+    const viewer = this._board.getViewer();
+    viewer.drawFrame();
   }
 
   resize(newViewSize: Partial<ViewSizeInfo>) {
diff --git a/packages/core/src/middleware/scaler/index.ts b/packages/core/src/middleware/scaler/index.ts
index fa3428740..1d88a7ca3 100644
--- a/packages/core/src/middleware/scaler/index.ts
+++ b/packages/core/src/middleware/scaler/index.ts
@@ -1,8 +1,10 @@
-import type { PointSize, BoardMiddleware, ViewScaleInfo, ViewSizeInfo } from '@idraw/types';
+import type { BoardMiddleware, CoreEvent } from '@idraw/types';
+import { formatNumber } from '@idraw/util';
 
-export const MiddlewareScaler: BoardMiddleware = (opts) => {
+export const MiddlewareScaler: BoardMiddleware<Record<string, any>, CoreEvent> = (opts) => {
   const key = 'SCALE';
-  const { viewer, sharer } = opts;
+  const { viewer, sharer, eventHub } = opts;
+
   return {
     mode: key,
     isDefault: true,
@@ -18,6 +20,8 @@ export const MiddlewareScaler: BoardMiddleware = (opts) => {
       const { moveX, moveY } = viewer.scale({ scale: newScaleNum, point });
       viewer.scroll({ moveX, moveY });
       viewer.drawFrame();
+      const scaleNum = formatNumber(scale);
+      eventHub.trigger('scale', { scale: scaleNum });
     }
   };
 };
diff --git a/packages/core/src/middleware/selector/draw-wrapper.ts b/packages/core/src/middleware/selector/draw-wrapper.ts
index d959c1f52..8e0736773 100644
--- a/packages/core/src/middleware/selector/draw-wrapper.ts
+++ b/packages/core/src/middleware/selector/draw-wrapper.ts
@@ -65,10 +65,10 @@ export function drawSelectedElementControllersVertexes(
   const ctrlOpts = { ...wrapperOpts, borderWidth: resizeControllerBorderWidth, background: '#FFFFFF' };
 
   drawVertexes(ctx, calcViewVertexes(elementWrapper, opts), wrapperOpts);
-  drawVertexes(ctx, calcViewVertexes(left.vertexes, opts), ctrlOpts);
-  drawVertexes(ctx, calcViewVertexes(right.vertexes, opts), ctrlOpts);
-  drawVertexes(ctx, calcViewVertexes(top.vertexes, opts), ctrlOpts);
-  drawVertexes(ctx, calcViewVertexes(bottom.vertexes, opts), ctrlOpts);
+  // drawVertexes(ctx, calcViewVertexes(left.vertexes, opts), ctrlOpts);
+  // drawVertexes(ctx, calcViewVertexes(right.vertexes, opts), ctrlOpts);
+  // drawVertexes(ctx, calcViewVertexes(top.vertexes, opts), ctrlOpts);
+  // drawVertexes(ctx, calcViewVertexes(bottom.vertexes, opts), ctrlOpts);
   drawVertexes(ctx, calcViewVertexes(topLeft.vertexes, opts), ctrlOpts);
   drawVertexes(ctx, calcViewVertexes(topRight.vertexes, opts), ctrlOpts);
   drawVertexes(ctx, calcViewVertexes(bottomLeft.vertexes, opts), ctrlOpts);
diff --git a/packages/renderer/src/draw/base.ts b/packages/renderer/src/draw/box.ts
similarity index 90%
rename from packages/renderer/src/draw/base.ts
rename to packages/renderer/src/draw/box.ts
index 06f225db8..b442622fa 100644
--- a/packages/renderer/src/draw/base.ts
+++ b/packages/renderer/src/draw/box.ts
@@ -1,5 +1,5 @@
 import { ViewContext2D, Element, ElementType, ElementSize, ViewScaleInfo, ViewSizeInfo, TransformAction } from '@idraw/types';
-import { istype, isColorStr, generateSVGPath, rotateElement, is, getDefaultElementDetailConfig } from '@idraw/util';
+import { istype, isColorStr, generateSVGPath, rotateElement, is, getDefaultElementDetailConfig, calcViewBoxSize } from '@idraw/util';
 import { createColorStyle } from './color';
 
 const defaultElemConfig = getDefaultElementDetailConfig();
@@ -87,43 +87,18 @@ function drawBoxBackground(
   viewElem: Element<ElementType>,
   opts: { pattern?: string | CanvasPattern | null; viewScaleInfo: ViewScaleInfo; viewSizeInfo: ViewSizeInfo }
 ): void {
-  const { pattern, viewScaleInfo } = opts;
-  const { scale } = viewScaleInfo;
+  const { pattern, viewScaleInfo, viewSizeInfo } = opts;
   let transform: TransformAction[] = [];
-  let { borderRadius, boxSizing = defaultElemConfig.boxSizing, borderWidth } = viewElem.detail;
+  let { borderRadius, borderWidth } = viewElem.detail;
   if (typeof borderWidth !== 'number') {
     // TODO: If borderWidth is an array, borderRadius will not take effect and will become 0.
     borderRadius = 0;
   }
   if (viewElem.detail.background || pattern) {
-    let { x, y, w, h } = viewElem;
-    let radiusList: [number, number, number, number] = [0, 0, 0, 0];
-    if (typeof borderRadius === 'number') {
-      const br = borderRadius * scale;
-      radiusList = [br, br, br, br];
-    } else if (Array.isArray(borderRadius) && borderRadius?.length === 4) {
-      radiusList = [borderRadius[0] * scale, borderRadius[1] * scale, borderRadius[2] * scale, borderRadius[3] * scale];
-    }
-    let bw: number = 0;
-    if (typeof borderWidth === 'number') {
-      bw = (borderWidth || 1) * scale;
-    }
-    if (boxSizing === 'border-box') {
-      x = viewElem.x + bw / 2;
-      y = viewElem.y + bw / 2;
-      w = viewElem.w - bw;
-      h = viewElem.h - bw;
-    } else if (boxSizing === 'content-box') {
-      x = viewElem.x - bw / 2;
-      y = viewElem.y - bw / 2;
-      w = viewElem.w + bw;
-      h = viewElem.h + bw;
-    } else {
-      x = viewElem.x;
-      y = viewElem.y;
-      w = viewElem.w;
-      h = viewElem.h;
-    }
+    const { x, y, w, h, radiusList } = calcViewBoxSize(viewElem, {
+      viewScaleInfo,
+      viewSizeInfo
+    });
 
     // r = Math.min(r, w / 2, h / 2);
     // if (w < r * 2 || h < r * 2) {
diff --git a/packages/renderer/src/draw/circle.ts b/packages/renderer/src/draw/circle.ts
index 9ad40c1de..bd4e89a75 100644
--- a/packages/renderer/src/draw/circle.ts
+++ b/packages/renderer/src/draw/circle.ts
@@ -1,7 +1,7 @@
 import type { Element, RendererDrawElementOptions, ViewContext2D } from '@idraw/types';
 import { rotateElement } from '@idraw/util';
 import { createColorStyle } from './color';
-import { drawBoxShadow } from './base';
+import { drawBoxShadow } from './box';
 
 export function drawCircle(ctx: ViewContext2D, elem: Element<'circle'>, opts: RendererDrawElementOptions) {
   const { detail, angle } = elem;
diff --git a/packages/renderer/src/draw/group.ts b/packages/renderer/src/draw/group.ts
index 30d96b605..a95dbd0db 100644
--- a/packages/renderer/src/draw/group.ts
+++ b/packages/renderer/src/draw/group.ts
@@ -6,7 +6,7 @@ import { drawImage } from './image';
 import { drawText } from './text';
 import { drawSVG } from './svg';
 import { drawHTML } from './html';
-import { drawBox } from './base';
+import { drawBox } from './box';
 import { drawPath } from './path';
 
 export function drawElement(ctx: ViewContext2D, elem: Element<ElementType>, opts: RendererDrawElementOptions) {
diff --git a/packages/renderer/src/draw/html.ts b/packages/renderer/src/draw/html.ts
index dd9bb143c..7df20402c 100644
--- a/packages/renderer/src/draw/html.ts
+++ b/packages/renderer/src/draw/html.ts
@@ -2,15 +2,18 @@ import type { Element, RendererDrawElementOptions, ViewContext2D } from '@idraw/
 import { rotateElement } from '@idraw/util';
 
 export function drawHTML(ctx: ViewContext2D, elem: Element<'html'>, opts: RendererDrawElementOptions) {
-  const content = opts.loader.getContent(elem.uuid);
+  const content = opts.loader.getContent(elem);
   const { calculator, viewScaleInfo, viewSizeInfo } = opts;
   const { x, y, w, h, angle } = calculator.elementSize(elem, viewScaleInfo, viewSizeInfo);
   rotateElement(ctx, { x, y, w, h, angle }, () => {
     if (!content) {
-      opts.loader.load(elem as Element<'html'>);
+      opts.loader.load(elem as Element<'html'>, opts.elementAssets || {});
     }
     if (elem.type === 'html' && content) {
+      const { opacity } = elem.detail;
+      ctx.globalAlpha = opacity ? opacity : 1;
       ctx.drawImage(content, x, y, w, h);
+      ctx.globalAlpha = 1;
     }
   });
 }
diff --git a/packages/renderer/src/draw/image.ts b/packages/renderer/src/draw/image.ts
index 3c7b44d68..948447c04 100644
--- a/packages/renderer/src/draw/image.ts
+++ b/packages/renderer/src/draw/image.ts
@@ -1,16 +1,54 @@
 import type { Element, RendererDrawElementOptions, ViewContext2D } from '@idraw/types';
-import { rotateElement } from '@idraw/util';
+import { rotateElement, calcViewBoxSize } from '@idraw/util';
+import { drawBox, drawBoxShadow } from './box';
 
 export function drawImage(ctx: ViewContext2D, elem: Element<'image'>, opts: RendererDrawElementOptions) {
   const content = opts.loader.getContent(elem);
   const { calculator, viewScaleInfo, viewSizeInfo } = opts;
   const { x, y, w, h, angle } = calculator.elementSize(elem, viewScaleInfo, viewSizeInfo);
+
+  const viewElem = { ...elem, ...{ x, y, w, h, angle } };
   rotateElement(ctx, { x, y, w, h, angle }, () => {
-    if (!content) {
-      opts.loader.load(elem as Element<'image'>, opts.elementAssets || {});
-    }
-    if (elem.type === 'image' && content) {
-      ctx.drawImage(content, x, y, w, h);
-    }
+    drawBoxShadow(ctx, viewElem, {
+      viewScaleInfo,
+      viewSizeInfo,
+      renderContent: () => {
+        drawBox(ctx, viewElem, {
+          originElem: elem,
+          calcElemSize: { x, y, w, h, angle },
+          viewScaleInfo,
+          viewSizeInfo,
+          renderContent: () => {
+            if (!content) {
+              opts.loader.load(elem as Element<'image'>, opts.elementAssets || {});
+            }
+            if (elem.type === 'image' && content) {
+              const { opacity } = elem.detail;
+              ctx.globalAlpha = opacity ? opacity : 1;
+              const { x, y, w, h, radiusList } = calcViewBoxSize(viewElem, {
+                viewScaleInfo,
+                viewSizeInfo
+              });
+
+              ctx.save();
+
+              ctx.beginPath();
+              ctx.moveTo(x + radiusList[0], y);
+              ctx.arcTo(x + w, y, x + w, y + h, radiusList[1]);
+              ctx.arcTo(x + w, y + h, x, y + h, radiusList[2]);
+              ctx.arcTo(x, y + h, x, y, radiusList[3]);
+              ctx.arcTo(x, y, x + w, y, radiusList[0]);
+              ctx.closePath();
+              ctx.fill();
+              ctx.clip();
+              ctx.drawImage(content, x, y, w, h);
+              ctx.globalAlpha = 1;
+
+              ctx.restore();
+            }
+          }
+        });
+      }
+    });
   });
 }
diff --git a/packages/renderer/src/draw/path.ts b/packages/renderer/src/draw/path.ts
index f4ccce2f6..2f47f7865 100644
--- a/packages/renderer/src/draw/path.ts
+++ b/packages/renderer/src/draw/path.ts
@@ -1,6 +1,6 @@
 import type { Element, RendererDrawElementOptions, ViewContext2D } from '@idraw/types';
 import { rotateElement, generateSVGPath } from '@idraw/util';
-import { drawBox, drawBoxShadow } from './base';
+import { drawBox, drawBoxShadow } from './box';
 
 export function drawPath(ctx: ViewContext2D, elem: Element<'path'>, opts: RendererDrawElementOptions) {
   const { detail } = elem;
diff --git a/packages/renderer/src/draw/rect.ts b/packages/renderer/src/draw/rect.ts
index a8e40aa6a..11600ad66 100644
--- a/packages/renderer/src/draw/rect.ts
+++ b/packages/renderer/src/draw/rect.ts
@@ -1,6 +1,6 @@
 import type { Element, RendererDrawElementOptions, ViewContext2D } from '@idraw/types';
 import { rotateElement } from '@idraw/util';
-import { drawBox, drawBoxShadow } from './base';
+import { drawBox, drawBoxShadow } from './box';
 
 export function drawRect(ctx: ViewContext2D, elem: Element<'rect'>, opts: RendererDrawElementOptions) {
   const { calculator, viewScaleInfo, viewSizeInfo } = opts;
diff --git a/packages/renderer/src/draw/svg.ts b/packages/renderer/src/draw/svg.ts
index 7e12c7578..477315915 100644
--- a/packages/renderer/src/draw/svg.ts
+++ b/packages/renderer/src/draw/svg.ts
@@ -2,7 +2,7 @@ import type { Element, RendererDrawElementOptions, ViewContext2D } from '@idraw/
 import { rotateElement } from '@idraw/util';
 
 export function drawSVG(ctx: ViewContext2D, elem: Element<'svg'>, opts: RendererDrawElementOptions) {
-  const content = opts.loader.getContent(elem.uuid);
+  const content = opts.loader.getContent(elem);
   const { calculator, viewScaleInfo, viewSizeInfo } = opts;
   const { x, y, w, h, angle } = calculator.elementSize(elem, viewScaleInfo, viewSizeInfo);
   rotateElement(ctx, { x, y, w, h, angle }, () => {
@@ -10,7 +10,10 @@ export function drawSVG(ctx: ViewContext2D, elem: Element<'svg'>, opts: Renderer
       opts.loader.load(elem as Element<'svg'>, opts.elementAssets || {});
     }
     if (elem.type === 'svg' && content) {
+      const { opacity } = elem.detail;
+      ctx.globalAlpha = opacity ? opacity : 1;
       ctx.drawImage(content, x, y, w, h);
+      ctx.globalAlpha = 1;
     }
   });
 }
diff --git a/packages/renderer/src/draw/text.ts b/packages/renderer/src/draw/text.ts
index 0966052ec..adc80d3b4 100644
--- a/packages/renderer/src/draw/text.ts
+++ b/packages/renderer/src/draw/text.ts
@@ -1,7 +1,7 @@
 import type { Element, RendererDrawElementOptions, ViewContext2D } from '@idraw/types';
 import { rotateElement } from '@idraw/util';
 import { is, isColorStr, getDefaultElementDetailConfig } from '@idraw/util';
-import { drawBox } from './base';
+import { drawBox } from './box';
 
 const detailConfig = getDefaultElementDetailConfig();
 
diff --git a/packages/types/src/lib/core.ts b/packages/types/src/lib/core.ts
index c84238cdf..d4f7a212c 100644
--- a/packages/types/src/lib/core.ts
+++ b/packages/types/src/lib/core.ts
@@ -29,9 +29,13 @@ export interface CoreEventSelect {
 export interface CoreEventChange {
   data: Data;
 }
+export interface CoreEventScale {
+  scale: number;
+}
 
 export type CoreEvent = {
   cursor: CoreEventCursor;
   select: CoreEventSelect;
   change: CoreEventChange;
+  scale: CoreEventScale;
 };
diff --git a/packages/types/src/lib/view.ts b/packages/types/src/lib/view.ts
index 3817ce5d3..9e59e6249 100644
--- a/packages/types/src/lib/view.ts
+++ b/packages/types/src/lib/view.ts
@@ -43,3 +43,11 @@ export interface ViewCalculator {
 }
 
 export type ViewRectVertexes = [PointSize, PointSize, PointSize, PointSize];
+
+export interface ViewBoxSize {
+  x: number;
+  y: number;
+  w: number;
+  h: number;
+  radiusList: [number, number, number, number];
+}
diff --git a/packages/util/src/index.ts b/packages/util/src/index.ts
index 7938e72d6..4b219e607 100644
--- a/packages/util/src/index.ts
+++ b/packages/util/src/index.ts
@@ -1,5 +1,5 @@
 export { delay, compose, throttle } from './lib/time';
-export { downloadImageFromCanvas, parseFileToBase64, pickFile } from './lib/file';
+export { downloadImageFromCanvas, parseFileToBase64, pickFile, parseFileToText } from './lib/file';
 export { toColorHexStr, toColorHexNum, isColorStr, colorNameToHex, colorToCSS, colorToLinearGradientCSS, mergeHexColorAlpha } from './lib/color';
 export { createUUID, isAssetId, createAssetId } from './lib/uuid';
 export { deepClone, sortDataAsserts } from './lib/data';
@@ -59,3 +59,4 @@ export { compressImage } from './lib/image';
 export { formatNumber } from './lib/number';
 export { matrixToAngle, matrixToRadian } from './lib/matrix';
 export { getDefaultElementDetailConfig } from './lib/config';
+export { calcViewBoxSize } from './lib/view-box';
diff --git a/packages/util/src/lib/controller.ts b/packages/util/src/lib/controller.ts
index 34b08308f..617612ca8 100644
--- a/packages/util/src/lib/controller.ts
+++ b/packages/util/src/lib/controller.ts
@@ -58,55 +58,70 @@ export function calcElementSizeController(
   const bottomRightCenter = vertexes[2];
   const bottomLeftCenter = vertexes[3];
 
-  const topSize = createControllerElementSizeFromCenter(topCenter, { size: ctrlSize, angle: totalAngle });
-  const rightSize = createControllerElementSizeFromCenter(rightCenter, { size: ctrlSize, angle: totalAngle });
-  const bottomSize = createControllerElementSizeFromCenter(bottomCenter, { size: ctrlSize, angle: totalAngle });
-  const leftSize = createControllerElementSizeFromCenter(leftCenter, { size: ctrlSize, angle: totalAngle });
+  // const topSize = createControllerElementSizeFromCenter(topCenter, { size: ctrlSize, angle: totalAngle });
+  // const rightSize = createControllerElementSizeFromCenter(rightCenter, { size: ctrlSize, angle: totalAngle });
+  // const bottomSize = createControllerElementSizeFromCenter(bottomCenter, { size: ctrlSize, angle: totalAngle });
+  // const leftSize = createControllerElementSizeFromCenter(leftCenter, { size: ctrlSize, angle: totalAngle });
+
   const topLeftSize = createControllerElementSizeFromCenter(topLeftCenter, { size: ctrlSize, angle: totalAngle });
   const topRightSize = createControllerElementSizeFromCenter(topRightCenter, { size: ctrlSize, angle: totalAngle });
   const bottomLeftSize = createControllerElementSizeFromCenter(bottomLeftCenter, { size: ctrlSize, angle: totalAngle });
   const bottomRightSize = createControllerElementSizeFromCenter(bottomRightCenter, { size: ctrlSize, angle: totalAngle });
 
+  const topLeftVertexes = calcElementVertexes(topLeftSize);
+  const topRightVertexes = calcElementVertexes(topRightSize);
+  const bottomLeftVertexes = calcElementVertexes(bottomLeftSize);
+  const bottomRightVertexes = calcElementVertexes(bottomRightSize);
+
+  const topVertexes: ViewRectVertexes = [topLeftVertexes[1], topRightVertexes[0], topRightVertexes[3], topLeftVertexes[2]];
+  const rightVertexes: ViewRectVertexes = [topRightVertexes[3], topRightVertexes[2], bottomRightVertexes[1], bottomRightVertexes[0]];
+  const bottomVertexes: ViewRectVertexes = [bottomLeftVertexes[1], bottomRightVertexes[0], bottomRightVertexes[3], bottomLeftVertexes[2]];
+  const leftVertexes: ViewRectVertexes = [topLeftVertexes[3], topLeftVertexes[2], bottomLeftVertexes[1], bottomLeftVertexes[0]];
+  // const topVertexes = calcElementVertexes(topSize);
+  // const rightVertexes = calcElementVertexes(rightSize);
+  // const bottomVertexes = calcElementVertexes(bottomSize);
+  // const leftVertexes = calcElementVertexes(leftSize);
+
   const sizeController: ElementSizeController = {
     elementWrapper: vertexes,
     left: {
       type: 'left',
-      vertexes: calcElementVertexes(leftSize),
+      vertexes: leftVertexes,
       center: leftCenter
     },
     right: {
       type: 'right',
-      vertexes: calcElementVertexes(rightSize),
+      vertexes: rightVertexes,
       center: rightCenter
     },
     top: {
       type: 'top',
-      vertexes: calcElementVertexes(topSize),
+      vertexes: topVertexes,
       center: topCenter
     },
     bottom: {
       type: 'bottom',
-      vertexes: calcElementVertexes(bottomSize),
+      vertexes: bottomVertexes,
       center: bottomCenter
     },
     topLeft: {
       type: 'top-left',
-      vertexes: calcElementVertexes(topLeftSize),
+      vertexes: topLeftVertexes,
       center: topLeftCenter
     },
     topRight: {
       type: 'top-right',
-      vertexes: calcElementVertexes(topRightSize),
+      vertexes: topRightVertexes,
       center: topRightCenter
     },
     bottomLeft: {
       type: 'bottom-left',
-      vertexes: calcElementVertexes(bottomLeftSize),
+      vertexes: bottomLeftVertexes,
       center: bottomLeftCenter
     },
     bottomRight: {
       type: 'bottom-right',
-      vertexes: calcElementVertexes(bottomRightSize),
+      vertexes: bottomRightVertexes,
       center: bottomRightCenter
     }
   };
diff --git a/packages/util/src/lib/view-box.ts b/packages/util/src/lib/view-box.ts
new file mode 100644
index 000000000..f729ac5ff
--- /dev/null
+++ b/packages/util/src/lib/view-box.ts
@@ -0,0 +1,62 @@
+import type { Element, ViewScaleInfo, ViewSizeInfo, ViewBoxSize } from '@idraw/types';
+import { getDefaultElementDetailConfig } from './config';
+const defaultElemConfig = getDefaultElementDetailConfig();
+
+export function calcViewBoxSize(viewElem: Element, opts: { viewScaleInfo: ViewScaleInfo; viewSizeInfo: ViewSizeInfo }): ViewBoxSize {
+  const { viewScaleInfo } = opts;
+  const { scale } = viewScaleInfo;
+  let { borderRadius, boxSizing = defaultElemConfig.boxSizing, borderWidth } = viewElem.detail;
+  if (typeof borderWidth !== 'number') {
+    // TODO: If borderWidth is an array, borderRadius will not take effect and will become 0.
+    borderRadius = 0;
+  }
+  let { x, y, w, h } = viewElem;
+  let radiusList: [number, number, number, number] = [0, 0, 0, 0];
+  if (typeof borderRadius === 'number') {
+    const br = borderRadius * scale;
+    radiusList = [br, br, br, br];
+  } else if (Array.isArray(borderRadius) && borderRadius?.length === 4) {
+    radiusList = [borderRadius[0] * scale, borderRadius[1] * scale, borderRadius[2] * scale, borderRadius[3] * scale];
+  }
+  let bw: number = 0;
+  if (typeof borderWidth === 'number') {
+    bw = (borderWidth || 1) * scale;
+  }
+  if (boxSizing === 'border-box') {
+    x = viewElem.x + bw / 2;
+    y = viewElem.y + bw / 2;
+    w = viewElem.w - bw;
+    h = viewElem.h - bw;
+  } else if (boxSizing === 'content-box') {
+    x = viewElem.x - bw / 2;
+    y = viewElem.y - bw / 2;
+    w = viewElem.w + bw;
+    h = viewElem.h + bw;
+  } else {
+    x = viewElem.x;
+    y = viewElem.y;
+    w = viewElem.w;
+    h = viewElem.h;
+  }
+
+  // r = Math.min(r, w / 2, h / 2);
+  // if (w < r * 2 || h < r * 2) {
+  //   r = 0;
+  // }
+
+  // ctx.beginPath();
+  // ctx.moveTo(x + radiusList[0], y);
+  // ctx.arcTo(x + w, y, x + w, y + h, radiusList[1]);
+  // ctx.arcTo(x + w, y + h, x, y + h, radiusList[2]);
+  // ctx.arcTo(x, y + h, x, y, radiusList[3]);
+  // ctx.arcTo(x, y, x + w, y, radiusList[0]);
+  // ctx.closePath();
+
+  return {
+    x,
+    y,
+    w,
+    h,
+    radiusList
+  };
+}