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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.support.transition.widget;
     18 
     19 import android.graphics.Matrix;
     20 import android.os.Bundle;
     21 import android.view.View;
     22 import android.view.ViewGroup;
     23 import android.widget.ImageView;
     24 
     25 import androidx.transition.ChangeImageTransform;
     26 import androidx.transition.Transition;
     27 import androidx.transition.TransitionManager;
     28 
     29 import com.example.android.support.transition.R;
     30 
     31 /**
     32  * This demonstrates basic usage of the ChangeImageTransform Transition.
     33  */
     34 public class ChangeImageTransformUsage extends TransitionUsageBase {
     35 
     36     private ViewGroup mRoot;
     37     private ImageView mPhoto;
     38 
     39     private static final Transition TRANSITION = new ChangeImageTransform();
     40 
     41     @Override
     42     int getLayoutResId() {
     43         return R.layout.image_transform;
     44     }
     45 
     46     @Override
     47     protected void onCreate(Bundle savedInstanceState) {
     48         super.onCreate(savedInstanceState);
     49         mRoot = findViewById(R.id.container);
     50         mPhoto = findViewById(R.id.photo);
     51         final View.OnClickListener listener = new View.OnClickListener() {
     52             @Override
     53             public void onClick(View v) {
     54                 TransitionManager.beginDelayedTransition(mRoot, TRANSITION);
     55                 switch (v.getId()) {
     56                     case R.id.fit_xy:
     57                         mPhoto.setScaleType(ImageView.ScaleType.FIT_XY);
     58                         break;
     59                     case R.id.center:
     60                         mPhoto.setScaleType(ImageView.ScaleType.CENTER);
     61                         break;
     62                     case R.id.center_crop:
     63                         mPhoto.setScaleType(ImageView.ScaleType.CENTER_CROP);
     64                         break;
     65                     case R.id.fit_start:
     66                         mPhoto.setScaleType(ImageView.ScaleType.FIT_START);
     67                         break;
     68                     case R.id.fit_end:
     69                         mPhoto.setScaleType(ImageView.ScaleType.FIT_END);
     70                         break;
     71                     case R.id.matrix:
     72                         mPhoto.setScaleType(ImageView.ScaleType.MATRIX);
     73                         final Matrix matrix = new Matrix();
     74                         matrix.setRotate(45.f);
     75                         matrix.postTranslate(200, 10);
     76                         mPhoto.setImageMatrix(matrix);
     77                         break;
     78                 }
     79             }
     80         };
     81         findViewById(R.id.fit_xy).setOnClickListener(listener);
     82         findViewById(R.id.center).setOnClickListener(listener);
     83         findViewById(R.id.center_crop).setOnClickListener(listener);
     84         findViewById(R.id.fit_start).setOnClickListener(listener);
     85         findViewById(R.id.fit_end).setOnClickListener(listener);
     86         findViewById(R.id.matrix).setOnClickListener(listener);
     87     }
     88 
     89 }
     90