Add Fresco support

photoview/src/main/java/com/github/chrisbanes/photoview/PhotoViewAttacher.java

@@ -598,7 +598,7 @@ private void checkAndDisplayMatrix() {
      * @param matrix - Matrix to map Drawable against
      * @return RectF - Displayed Rectangle
      */
-    private RectF getDisplayRect(Matrix matrix) {
+    protected RectF getDisplayRect(Matrix matrix) {
         Drawable d = mImageView.getDrawable();
         if (d != null) {
             mDisplayRect.set(0, 0, d.getIntrinsicWidth(),

sample/build.gradle

@@ -21,4 +21,6 @@ dependencies {
     implementation "com.android.support:recyclerview-v7:$supportLibVersion"
     implementation 'com.squareup.picasso:picasso:2.5.2'
     implementation project(':photoview')
+
+    implementation 'com.facebook.fresco:fresco:1.3.0'
 }

sample/src/main/AndroidManifest.xml

@@ -31,6 +31,9 @@
         <activity android:name=".ActivityTransitionToActivity" />
 
         <activity android:name=".ImmersiveActivity" />
+
+        <activity android:name=".FrescoSampleActivity" />
+
     </application>
 
 </manifest>

sample/src/main/java/com/github/chrisbanes/photoview/sample/FrescoSampleActivity.java

@@ -0,0 +1,180 @@
+/*******************************************************************************
+ * Copyright 2011, 2012 Chris Banes.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************/
+package com.github.chrisbanes.photoview.sample;
+
+import android.graphics.Matrix;
+import android.graphics.RectF;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.util.Log;
+import android.view.MenuItem;
+import android.view.MotionEvent;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.facebook.drawee.drawable.ScalingUtils;
+import com.github.chrisbanes.photoview.OnMatrixChangedListener;
+import com.github.chrisbanes.photoview.OnPhotoTapListener;
+import com.github.chrisbanes.photoview.OnSingleFlingListener;
+import com.github.chrisbanes.photoview.sample.fresco.PhotoDraweeView;
+
+import java.util.Random;
+
+
+public class FrescoSampleActivity extends AppCompatActivity {
+
+    static final String PHOTO_TAP_TOAST_STRING = "Photo Tap! X: %.2f %% Y:%.2f %% ID: %d";
+    static final String SCALE_TOAST_STRING = "Scaled to: %.2ff";
+    static final String FLING_LOG_STRING = "Fling velocityX: %.2f, velocityY: %.2f";
+
+    private PhotoDraweeView mPhotoView;
+    private TextView mCurrMatrixTv;
+
+    private Toast mCurrentToast;
+
+    private Matrix mCurrentDisplayMatrix = null;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_fresco_simple_sample);
+
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        toolbar.setTitle("Simple Sample");
+        toolbar.setNavigationIcon(R.drawable.ic_arrow_back_white_24dp);
+        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                onBackPressed();
+            }
+        });
+        toolbar.inflateMenu(R.menu.main_menu);
+        toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
+            @Override
+            public boolean onMenuItemClick(MenuItem item) {
+                switch (item.getItemId()) {
+                    case R.id.menu_zoom_toggle:
+                        mPhotoView.setZoomable(!mPhotoView.isZoomEnabled());
+                        item.setTitle(mPhotoView.isZoomEnabled() ? R.string.menu_zoom_disable : R.string.menu_zoom_enable);
+                        return true;
+
+                    case R.id.menu_scale_fit_center:
+                        mPhotoView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.FIT_CENTER);
+                        return true;
+
+                    case R.id.menu_scale_fit_start:
+                        mPhotoView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.FIT_START);
+                        return true;
+
+                    case R.id.menu_scale_fit_end:
+                        mPhotoView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.FIT_END);
+                        return true;
+
+                    case R.id.menu_scale_fit_xy:
+                        mPhotoView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.FIT_XY);
+                        return true;
+
+                    case R.id.menu_scale_scale_center:
+                        mPhotoView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.CENTER);
+                        return true;
+
+                    case R.id.menu_scale_scale_center_crop:
+                        mPhotoView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.CENTER_CROP);
+                        return true;
+
+                    case R.id.menu_scale_scale_center_inside:
+                        mPhotoView.getHierarchy().setActualImageScaleType(ScalingUtils.ScaleType.CENTER_INSIDE);
+                        return true;
+
+                    case R.id.menu_scale_random_animate:
+                    case R.id.menu_scale_random:
+                        Random r = new Random();
+
+                        float minScale = mPhotoView.getMinimumScale();
+                        float maxScale = mPhotoView.getMaximumScale();
+                        float randomScale = minScale + (r.nextFloat() * (maxScale - minScale));
+                        mPhotoView.setScale(randomScale, item.getItemId() == R.id.menu_scale_random_animate);
+
+                        showToast(String.format(SCALE_TOAST_STRING, randomScale));
+
+                        return true;
+                    case R.id.menu_matrix_restore:
+                        if (mCurrentDisplayMatrix == null)
+                            showToast("You need to capture display matrix first");
+                        else
+                            mPhotoView.setDisplayMatrix(mCurrentDisplayMatrix);
+                        return true;
+                    case R.id.menu_matrix_capture:
+                        mCurrentDisplayMatrix = new Matrix();
+                        mPhotoView.getDisplayMatrix(mCurrentDisplayMatrix);
+                        return true;
+                }
+                return false;
+            }
+        });
+        mPhotoView = findViewById(R.id.iv_photo);
+        mCurrMatrixTv = findViewById(R.id.tv_current_matrix);
+
+//        Drawable bitmap = ContextCompat.getDrawable(this, R.drawable.wallpaper);
+//        mPhotoView.setImageDrawable(bitmap);
+        mPhotoView.setImageURI(Uri.parse("http://imgsrc.baidu.com/imgad/pic/item/7dd98d1001e93901cf713c2d71ec54e736d196b6.jpg"));
+        // Lets attach some listeners, not required though!
+        mPhotoView.setOnMatrixChangeListener(new MatrixChangeListener());
+        mPhotoView.setOnPhotoTapListener(new PhotoTapListener());
+        mPhotoView.setOnSingleFlingListener(new SingleFlingListener());
+    }
+
+    private class PhotoTapListener implements OnPhotoTapListener {
+
+        @Override
+        public void onPhotoTap(ImageView view, float x, float y) {
+            float xPercentage = x * 100f;
+            float yPercentage = y * 100f;
+
+            showToast(String.format(PHOTO_TAP_TOAST_STRING, xPercentage, yPercentage, view == null ? 0 : view.getId()));
+        }
+    }
+
+    private void showToast(CharSequence text) {
+        if (mCurrentToast != null) {
+            mCurrentToast.cancel();
+        }
+
+        mCurrentToast = Toast.makeText(FrescoSampleActivity.this, text, Toast.LENGTH_SHORT);
+        mCurrentToast.show();
+    }
+
+    private class MatrixChangeListener implements OnMatrixChangedListener {
+
+        @Override
+        public void onMatrixChanged(RectF rect) {
+            mCurrMatrixTv.setText(rect.toString());
+        }
+    }
+
+    private class SingleFlingListener implements OnSingleFlingListener {
+
+        @Override
+        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
+            Log.d("PhotoView", String.format(FLING_LOG_STRING, velocityX, velocityY));
+            return true;
+        }
+    }
+}

sample/src/main/java/com/github/chrisbanes/photoview/sample/LauncherActivity.java

@@ -27,6 +27,8 @@
 import android.view.ViewGroup;
 import android.widget.TextView;
 
+import com.facebook.drawee.backends.pipeline.Fresco;
+
 public class LauncherActivity extends AppCompatActivity {
 
     public static final String[] options = {
@@ -35,13 +37,17 @@ public class LauncherActivity extends AppCompatActivity {
             "Rotation Sample",
             "Picasso Sample",
             "Activity Transition Sample",
-            "Immersive Sample"
+            "Immersive Sample",
+            "Fresco Sample"
     };
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_launcher);
+
+        Fresco.initialize(getApplicationContext());
+
         Toolbar toolbar = findViewById(R.id.toolbar);
         toolbar.setTitle(R.string.app_name);
         RecyclerView recyclerView = findViewById(R.id.list);
@@ -78,6 +84,8 @@ public void onClick(View v) {
                             break;
                         case 5:
                             clazz = ImmersiveActivity.class;
+                        case 6:
+                            clazz = FrescoSampleActivity.class;
                     }
 
                     Context context = holder.itemView.getContext();

sample/src/main/java/com/github/chrisbanes/photoview/sample/fresco/DraweeViewAttacher.java

@@ -0,0 +1,32 @@
+package com.github.chrisbanes.photoview.sample.fresco;
+
+import android.graphics.Matrix;
+import android.graphics.RectF;
+
+import com.facebook.drawee.view.GenericDraweeView;
+import com.github.chrisbanes.photoview.PhotoViewAttacher;
+
+/*******************************************************************************
+ * Description: Extend PhotoViewAttacher to support Fresco.
+ *
+ * Author: Freeman
+ *
+ * Date: 2018/9/7
+ *******************************************************************************/
+public class DraweeViewAttacher extends PhotoViewAttacher {
+
+	private GenericDraweeView imageView;
+
+	public DraweeViewAttacher(GenericDraweeView image) {
+		super(image);
+		this.imageView = image;
+	}
+
+	@Override
+	protected RectF getDisplayRect(Matrix matrix) {
+		RectF displayRect = new RectF();
+		imageView.getHierarchy().getActualImageBounds(displayRect);
+		matrix.mapRect(displayRect);
+		return displayRect;
+	}
+}