选择区域考虑padding

lib/pen.js

@@ -292,6 +292,11 @@ export default class Painter {
       x: view.css && view.css.right ? (x - width) : x,
       y
     };
+    const pd = this._doPaddings(view);
+    view.rect.left = view.rect.left - pd[3];
+    view.rect.top = view.rect.top - pd[0];
+    view.rect.right = view.rect.right + pd[1];
+    view.rect.bottom = view.rect.bottom + pd[2];
 
     this.ctx.rotate(angle);
     if (!notClip && view.css && view.css.borderRadius && view.type !== 'rect') {
@@ -311,16 +316,8 @@ export default class Painter {
     };
   }
 
-  // 画文字的背景图片
-  _doBackground(view) {
-    this.ctx.save();
+  _doPaddings(view) {
     const {
-      width: rawWidth,
-      height: rawHeight,
-    } = this._preProcess(view, true);
-
-    const {
-      background,
       padding,
     } = view.css;
     let pd = [0, 0, 0, 0];
@@ -349,8 +346,24 @@ export default class Painter {
         pd = [x, y, z, a];
       }
     }
+    return pd;
+  }
+
+  // 画文字的背景图片
+  _doBackground(view) {
+    this.ctx.save();
+    const {
+      width: rawWidth,
+      height: rawHeight,
+    } = this._preProcess(view, true);
+
+    const {
+      background,
+    } = view.css;
+    let pd = this._doPaddings(view);
     const width = rawWidth + pd[1] + pd[3];
     const height = rawHeight + pd[0] + pd[2];
+
     this._doClip(view.css.borderRadius, width, height)
     if (GD.api.isGradient(background)) {
       GD.api.doGradient(background, width, height, this.ctx);