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      1 /*
      2  * Copyright (C) 2013 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.android.gallery3d.ingest.ui;
     18 
     19 import com.android.gallery3d.R;
     20 import com.android.gallery3d.ingest.data.IngestObjectInfo;
     21 import com.android.gallery3d.ingest.data.MtpBitmapFetch;
     22 
     23 import android.content.Context;
     24 import android.graphics.Bitmap;
     25 import android.graphics.Canvas;
     26 import android.graphics.Paint;
     27 import android.mtp.MtpDevice;
     28 import android.util.AttributeSet;
     29 import android.widget.Checkable;
     30 
     31 
     32 /**
     33  * View for thumbnail images from an MTP device
     34  */
     35 public class MtpThumbnailTileView extends MtpImageView implements Checkable {
     36 
     37   private Paint mForegroundPaint;
     38   private boolean mIsChecked;
     39   private Bitmap mBitmap;
     40 
     41   private void init() {
     42     mForegroundPaint = new Paint();
     43     mForegroundPaint.setColor(
     44         getResources().getColor(R.color.ingest_highlight_semitransparent));
     45   }
     46 
     47   public MtpThumbnailTileView(Context context) {
     48     super(context);
     49     init();
     50   }
     51 
     52   public MtpThumbnailTileView(Context context, AttributeSet attrs) {
     53     super(context, attrs);
     54     init();
     55   }
     56 
     57   public MtpThumbnailTileView(Context context, AttributeSet attrs, int defStyle) {
     58     super(context, attrs, defStyle);
     59     init();
     60   }
     61 
     62   @Override
     63   public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     64     // Force this to be square
     65     super.onMeasure(widthMeasureSpec, widthMeasureSpec);
     66   }
     67 
     68   @Override
     69   protected Object fetchMtpImageDataFromDevice(MtpDevice device, IngestObjectInfo info) {
     70     return MtpBitmapFetch.getThumbnail(device, info);
     71   }
     72 
     73   @Override
     74   protected void onMtpImageDataFetchedFromDevice(Object result) {
     75     mBitmap = (Bitmap) result;
     76     setImageBitmap(mBitmap);
     77   }
     78 
     79   @Override
     80   public void draw(Canvas canvas) {
     81     super.draw(canvas);
     82     if (isChecked()) {
     83       canvas.drawRect(canvas.getClipBounds(), mForegroundPaint);
     84     }
     85   }
     86 
     87   @Override
     88   public boolean isChecked() {
     89     return mIsChecked;
     90   }
     91 
     92   @Override
     93   public void setChecked(boolean checked) {
     94     if (mIsChecked != checked) {
     95       mIsChecked = checked;
     96       invalidate();
     97     }
     98   }
     99 
    100   @Override
    101   public void toggle() {
    102     setChecked(!mIsChecked);
    103   }
    104 
    105   @Override
    106   protected void cancelLoadingAndClear() {
    107     super.cancelLoadingAndClear();
    108     if (mBitmap != null) {
    109       MtpBitmapFetch.recycleThumbnail(mBitmap);
    110       mBitmap = null;
    111     }
    112   }
    113 }
    114