update calculateWidthHeightRatio ...

jcodeing · jcodeing · commit c96a445ab4ac · 2017-01-16T10:40:18.000+08:00
diff --git a/README.md b/README.md
@@ -6,10 +6,12 @@ Anchor point positioning ImageView For [Android](https://raw.githubusercontent.c
 
 Introduction
 ============
-	An ImageView that anchors points according to the pixels,
+    一个可以锚点定位的 ImageView(根据像素点)
+    Demo 中通过 AnchorImageView 简单的实现了一个课本点读的功能
+	[An ImageView that anchors points according to the pixels,
 	locates the anchored area.
 	Demo shows a simple Click on the content area,
-	in the book to respond to the action.
+	in the book to respond to the action.]
 License
 =======
 	MIT License
diff --git a/src/main/java/com/jcodeing/anchorimageview/widget/AnchorImageView.java b/src/main/java/com/jcodeing/anchorimageview/widget/AnchorImageView.java
@@ -231,8 +231,8 @@ protected void disposeEvent(MotionEvent e) {
 
     @Override
     public void setImageBitmap(Bitmap bm) {
-        setWidthHeightRatio((float) parentWidth * 1f / (float) bm.getWidth(), (float) parentHeight * 1f / (float) bm.getHeight());
         super.setImageBitmap(bm);
+        calculateWidthHeightRatio();
     }
 
     // ============================@Set/Get@============================
@@ -241,9 +241,9 @@ public void setParentWidthHeight(int width, int height) {
         parentHeight = height;
     }
 
-    public void setWidthHeightRatio(float widthRatio, float heightRatio) {
-        this.widthRatio = widthRatio;
-        this.heightRatio = heightRatio;
+    public void calculateWidthHeightRatio() {
+        widthRatio = (float) parentWidth / getDrawable().getIntrinsicWidth();
+        heightRatio = (float) parentHeight / getDrawable().getIntrinsicHeight();
     }
 
     public void setCurrentClickAnchor(Anchor anchor) {
@@ -383,10 +383,10 @@ class AnchorCutProcess extends Thread {
 
             rectClickAnchor.set(leftP * widthRatio, topP * heightRatio, rightP * widthRatio, bottomP * heightRatio);
 
-            leftDMovElement = leftD * 1f / diffMovElementTotal;
-            rightDMovElement = rightD * 1f / diffMovElementTotal;
-            topDMovElement = topD * 1f / diffMovElementTotal;
-            bottomDMovElement = bottomD * 1f / diffMovElementTotal;
+            leftDMovElement = leftD / diffMovElementTotal;
+            rightDMovElement = rightD / diffMovElementTotal;
+            topDMovElement = topD / diffMovElementTotal;
+            bottomDMovElement = bottomD / diffMovElementTotal;
         }
 
         public void run() {
