| /* |
| * 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.example.bitmapsample; |
| |
| import android.content.Context; |
| import android.graphics.Canvas; |
| import android.util.AttributeSet; |
| import android.widget.ListView; |
| |
| import com.android.bitmap.drawable.ExtendedBitmapDrawable; |
| import com.android.bitmap.view.BitmapDrawableImageView; |
| |
| public class BitmapView extends BitmapDrawableImageView { |
| private final float mDensity; |
| |
| private ListView mListView; |
| |
| public BitmapView(Context c) { |
| this(c, null); |
| } |
| |
| public BitmapView(Context c, AttributeSet attrs) { |
| super(c, attrs); |
| mDensity = getResources().getDisplayMetrics().density; |
| } |
| |
| @Override |
| protected int getSuggestedMinimumHeight() { |
| return (int) (100 * mDensity); |
| } |
| |
| @Override |
| protected void onSizeChanged(final int w, final int h, int oldw, int oldh) { |
| ExtendedBitmapDrawable drawable = getTypedDrawable(); |
| drawable.setDecodeDimensions(w, h); |
| } |
| |
| public void setListView(final ListView listView) { |
| mListView = listView; |
| } |
| |
| @Override |
| protected void onDraw(final Canvas canvas) { |
| ExtendedBitmapDrawable drawable = getTypedDrawable(); |
| float fraction = (float) getBottom() / (mListView.getHeight() + getHeight()); |
| drawable.setParallaxFraction(fraction); |
| |
| super.onDraw(canvas); |
| } |
| } |