add anti-alias setting in path info

dqh147258 · Aug 11, 2019 · d329b80 · d329b80
1 parent c654714
commit d329b80
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Showing 6 changed files with 115 additions and 13 deletions.
diff --git a/README.md b/README.md
@@ -1,5 +1,5 @@
 # ClipPathLayout
-[ ![Download](https://api.bintray.com/packages/dqh147258/ClipPathLayout/ClipPathLayout/images/download.svg?version=1.0.3) ](https://bintray.com/dqh147258/ClipPathLayout/ClipPathLayout/1.0.3/link)
+[ ![Download](https://api.bintray.com/packages/dqh147258/ClipPathLayout/ClipPathLayout/images/download.svg?version=1.0.4) ](https://bintray.com/dqh147258/ClipPathLayout/ClipPathLayout/1.0.4/link)
 [![Platform](https://img.shields.io/badge/platform-android-blue.svg)]()
 [![License](https://img.shields.io/hexpm/l/plug.svg)](https://www.apache.org/licenses/LICENSE-2.0)
 
@@ -130,6 +130,7 @@ mImageView = mLayout.findViewById(R.id.image);
 new PathInfo.Builder(new CirclePathGenerator(), mImageView)
     .setApplyFlag(mApplyFlag)
     .setClipType(mClipType)
+    .setAntiAlias(false)
     .create()
     .apply();
 ```
@@ -214,6 +215,11 @@ Path的裁剪模式,有如下两种
 
 ![](https://github.com/dqh147258/ClipPathLayout/blob/master/image/select_clip_mode.gif)
 
+#### AntiAlias
+
+抗锯齿,true表示开启,false关闭,默认关闭.
+
+请慎用此功能,此功能会关闭硬件加速并且会新建图层,在View绘制期间还有一个图片生成过程,所以此功能开启会严重降低绘制性能,并且如果频繁刷新界面会导致内存抖动.所以这个功能只建议在静态而且不常刷新的情况下使用.
 
 ### 自定义ClipPathLayout
 

diff --git a/app/src/main/java/com/yxf/clippathlayout/sample/CirclePathFragment.java b/app/src/main/java/com/yxf/clippathlayout/sample/CirclePathFragment.java
@@ -84,6 +84,7 @@ public void onClick(View v) {
         new PathInfo.Builder(new OvalPathGenerator(), mClipTypeSwitchView)
                 .setApplyFlag(PathInfo.APPLY_FLAG_DRAW_AND_TOUCH)
                 .setClipType(PathInfo.CLIP_TYPE_IN)
+                .setAntiAlias(true)
                 .create()
                 .apply(mLayout);
 

diff --git a/app/src/main/java/com/yxf/clippathlayout/sample/YinYangFishFragment.java b/app/src/main/java/com/yxf/clippathlayout/sample/YinYangFishFragment.java
@@ -39,6 +39,7 @@ public void onClick(View v) {
         });
 
         new PathInfo.Builder(new YinYangFishPathGenerator(270), mYinFishView)
+                .setAntiAlias(true)
                 .create()
                 .apply();
 

diff --git a/build.gradle b/build.gradle
@@ -28,5 +28,5 @@ task clean(type: Delete) {
 }
 
 ext {
-    CLIP_PATH_LAYOUT_VERSION = '1.0.3'
+    CLIP_PATH_LAYOUT_VERSION = '1.0.4'
 }
diff --git a/clippathlayout/src/main/java/com/yxf/clippathlayout/ClipPathLayoutDelegate.java b/clippathlayout/src/main/java/com/yxf/clippathlayout/ClipPathLayoutDelegate.java
@@ -1,9 +1,17 @@
 package com.yxf.clippathlayout;
 
+import android.graphics.Bitmap;
 import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.DrawFilter;
 import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.PaintFlagsDrawFilter;
 import android.graphics.Path;
 import android.graphics.PointF;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffXfermode;
+import android.os.Build;
 import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
@@ -32,6 +40,19 @@ public class ClipPathLayoutDelegate implements ClipPathLayout {
 
     private ViewGetKey mTempViewGetKey;
 
+    private Paint mPathPaint;
+    private Paint mBitmapPaint;
+
+    private PorterDuffXfermode mDstInMode;
+    private PorterDuffXfermode mDstOutMode;
+
+    private DrawFilter mOriginalDrawFilter;
+    private Integer mOriginalLayerType;
+
+    private int mCanvasSavedCount;
+
+    private DrawFilter mAntiAliasDrawFilter;
+
     private boolean mHasLayoutRequest = false;
 
     private boolean mInBeforeDrawChild = false;
@@ -150,32 +171,92 @@ public void beforeDrawChild(Canvas canvas, View child, long drawingTime) {
         }
         mInBeforeDrawChild = true;
         executePendingTask();
-        canvas.save();
-        canvas.translate(child.getLeft(), child.getTop());
         if (mHasLayoutRequest) {
             mHasLayoutRequest = false;
             notifyAllPathChangedInternal(false);
         }
+
         ViewGetKey key = getTempViewGetKey(child.hashCode(), child);
         PathInfo info = mPathInfoMap.get(key);
+        if (info != null && info.isAntiAlias()) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                mCanvasSavedCount = canvas.saveLayer(child.getLeft(), child.getTop(), child.getRight(), child.getBottom(), null);
+            } else {
+                mCanvasSavedCount = canvas.saveLayer(child.getLeft(), child.getTop(), child.getRight(), child.getBottom(), null, Canvas.ALL_SAVE_FLAG);
+            }
+        } else {
+            mCanvasSavedCount = canvas.save();
+        }
         if (info != null) {
-            if ((info.getApplyFlag() & PathInfo.APPLY_FLAG_DRAW_ONLY) != 0) {
-                Path path = info.getPath();
-                if (path != null) {
-                    Utils.clipPath(canvas, path, info.getClipType());
-                } else {
-                    Log.d(TAG, "beforeDrawChild: path is null , hash code : " + info.hashCode());
+            if (!info.isAntiAlias()) {
+                if ((info.getApplyFlag() & PathInfo.APPLY_FLAG_DRAW_ONLY) != 0) {
+                    Path path = info.getPath();
+                    if (path != null) {
+                        canvas.translate(child.getLeft(), child.getTop());
+                        Utils.clipPath(canvas, path, info.getClipType());
+                        canvas.translate(-child.getLeft(), -child.getTop());
+                    } else {
+                        Log.d(TAG, "beforeDrawChild: path is null , hash code : " + info.hashCode());
+                    }
+                }
+            } else {
+                mOriginalDrawFilter = canvas.getDrawFilter();
+                mOriginalLayerType = mParent.getLayerType();
+                mParent.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
+                if (mAntiAliasDrawFilter == null) {
+                    mAntiAliasDrawFilter = new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
                 }
+                canvas.setDrawFilter(mAntiAliasDrawFilter);
             }
         }
         resetTempViewGetKey();
-        canvas.translate(-child.getLeft(), -child.getTop());
         mInBeforeDrawChild = false;
     }
 
     @Override
     public void afterDrawChild(Canvas canvas, View child, long drawingTime) {
-        canvas.restore();
+        ViewGetKey key = getTempViewGetKey(child.hashCode(), child);
+        PathInfo info = mPathInfoMap.get(key);
+        if (info != null && info.isAntiAlias()) {
+            if ((info.getApplyFlag() & PathInfo.APPLY_FLAG_DRAW_ONLY) != 0) {
+                Path path = info.getPath();
+                if (path != null) {
+                    Bitmap bitmap = Bitmap.createBitmap(child.getWidth(), child.getHeight(), Bitmap.Config.ARGB_8888);
+                    Canvas c = new Canvas(bitmap);
+                    if (mPathPaint == null) {
+                        mPathPaint = new Paint();
+                        mPathPaint.setAntiAlias(true);
+                    }
+                    if (mBitmapPaint == null) {
+                        mBitmapPaint = new Paint();
+                        mPathPaint.setAntiAlias(true);
+                    }
+                    c.drawPath(path, mPathPaint);
+                    if (info.getClipType() == PathInfo.CLIP_TYPE_IN) {
+                        if (mDstInMode == null) {
+                            mDstInMode = new PorterDuffXfermode(PorterDuff.Mode.DST_IN);
+                        }
+                        mBitmapPaint.setXfermode(mDstInMode);
+                    } else {
+                        if (mDstOutMode == null) {
+                            mDstOutMode = new PorterDuffXfermode(PorterDuff.Mode.DST_OUT);
+                        }
+                        mBitmapPaint.setXfermode(mDstOutMode);
+                    }
+                    canvas.drawBitmap(bitmap, child.getLeft(), child.getTop(), mBitmapPaint);
+                    //if use drawPath may cause some strange problems
+                    /*canvas.translate(child.getLeft(), child.getTop());
+                    canvas.drawPath(path, mBitmapPaint);
+                    canvas.translate(-child.getLeft(),-child.getTop());*/
+                } else {
+                    Log.d(TAG, "beforeDrawChild: path is null , hash code : " + info.hashCode());
+                }
+            }
+            mParent.setLayerType(mOriginalLayerType, null);
+            canvas.setDrawFilter(mOriginalDrawFilter);
+        }
+        resetTempViewGetKey();
+        canvas.restoreToCount(mCanvasSavedCount);
     }
 
     @Override

diff --git a/clippathlayout/src/main/java/com/yxf/clippathlayout/PathInfo.java b/clippathlayout/src/main/java/com/yxf/clippathlayout/PathInfo.java
@@ -32,6 +32,8 @@ public class PathInfo {
     private Path mPath;
     private PathRegion mPathRegion;
 
+    private boolean mAntiAlias;
+
     private PathInfo(PathGenerator generator, View view) {
         mPathGenerator = generator;
         mViewReference = new WeakReference<View>(view);
@@ -130,15 +132,20 @@ void setPathRegion(PathRegion pathRegion) {
         mPathRegion = pathRegion;
     }
 
+    public boolean isAntiAlias() {
+        return mAntiAlias;
+    }
+
     public static class Builder {
         private PathGenerator mPathGenerator;
         private View mView;
         private int mApplyFlag = APPLY_FLAG_DRAW_AND_TOUCH;
         private int mClipType = CLIP_TYPE_IN;
+        private boolean mAntiAlias = false;
 
         /**
          * @param generator Path生成器
-         * @param view 实现了ClipPathLayout接口的ViewGroup的子View
+         * @param view      实现了ClipPathLayout接口的ViewGroup的子View
          */
         public Builder(PathGenerator generator, View view) {
             if (generator == null) {
@@ -161,10 +168,16 @@ public Builder setClipType(int type) {
             return this;
         }
 
+        public Builder setAntiAlias(boolean antiAlias) {
+            mAntiAlias = antiAlias;
+            return this;
+        }
+
         public PathInfo create() {
             PathInfo info = new PathInfo(mPathGenerator, mView);
             info.mApplyFlag = mApplyFlag;
             info.mClipType = mClipType;
+            info.mAntiAlias = mAntiAlias;
             return info;
         }
     }
-Original file line number
+Diff line change
@@ Expand Up / @@ -28,5 +28,5 @@ task clean(type: Delete) { @@
     }
     ext {
-        CLIP_PATH_LAYOUT_VERSION = '1.0.3'
+        CLIP_PATH_LAYOUT_VERSION = '1.0.4'
     }