diff options
Diffstat (limited to 'src/com/android/gallery3d/ingest/ui/MtpThumbnailTileView.java')
-rw-r--r-- | src/com/android/gallery3d/ingest/ui/MtpThumbnailTileView.java | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/ingest/ui/MtpThumbnailTileView.java b/src/com/android/gallery3d/ingest/ui/MtpThumbnailTileView.java new file mode 100644 index 000000000..ddba6af91 --- /dev/null +++ b/src/com/android/gallery3d/ingest/ui/MtpThumbnailTileView.java @@ -0,0 +1,144 @@ +/* + * Copyright (C) 2013 The Android Open Source Project + * + * 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.android.gallery3d.ingest.ui; + +import android.content.Context; +import android.graphics.Bitmap; +import android.graphics.Canvas; +import android.graphics.Paint; +import android.mtp.MtpDevice; +import android.mtp.MtpObjectInfo; +import android.os.AsyncTask; +import android.util.AttributeSet; +import android.view.View; +import android.widget.Checkable; +import android.widget.ImageView; + +import com.android.gallery3d.R; + +public class MtpThumbnailTileView extends ImageView implements Checkable { + private static final int FADE_IN_TIME_MS = 80; + + private Paint mForegroundPaint; + private boolean mIsChecked; + + private void init() { + mForegroundPaint = new Paint(); + mForegroundPaint.setColor(getResources().getColor(R.color.ingest_highlight_semitransparent)); + showPlaceholder(); + } + + public MtpThumbnailTileView(Context context) { + super(context); + init(); + } + + public MtpThumbnailTileView(Context context, AttributeSet attrs) { + super(context, attrs); + init(); + } + + public MtpThumbnailTileView(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle); + init(); + } + + @Override + public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { + // Force this to be square + super.onMeasure(widthMeasureSpec, widthMeasureSpec); + } + + @Override + public void draw(Canvas canvas) { + super.draw(canvas); + if (mIsChecked) { + canvas.drawRect(canvas.getClipBounds(), mForegroundPaint); + } + } + + @Override + public boolean isChecked() { + return mIsChecked; + } + + @Override + public void setChecked(boolean checked) { + mIsChecked = checked; + } + + @Override + public void toggle() { + setChecked(!mIsChecked); + } + + private void showPlaceholder() { + setAlpha(0f); + } + + private LoadThumbnailTask mTask; + + public void setMtpDeviceAndObjectInfo(MtpDevice device, MtpObjectInfo object) { + animate().cancel(); + if (mTask != null) { + mTask.cancel(true); + } + Bitmap thumbnail = MtpBitmapCache.getInstanceForDevice(device) + .get(object.getObjectHandle()); + if (thumbnail != null) { + setAlpha(1f); + setImageBitmap(thumbnail); + } else { + showPlaceholder(); + mTask = new LoadThumbnailTask(device); + mTask.execute(object); + } + } + + private class LoadThumbnailTask extends AsyncTask<MtpObjectInfo, Void, Bitmap> { + private MtpDevice mDevice; + + public LoadThumbnailTask(MtpDevice device) { + mDevice = device; + } + + @Override + protected Bitmap doInBackground(MtpObjectInfo... args) { + Bitmap result = null; + if (!isCancelled()) { + result = MtpBitmapCache.getInstanceForDevice(mDevice).getOrCreate( + args[0].getObjectHandle()); + } + mDevice = null; + return result; + } + + @Override + protected void onPostExecute(Bitmap result) { + if (isCancelled() || result == null) { + return; + } + setAlpha(0f); + setImageBitmap(result); + animate().alpha(1f).setDuration(FADE_IN_TIME_MS); + } + + @Override + protected void onCancelled() { + } + } +} |