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/*
* Copyright (C) 2007 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.camera;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.SurfaceView;
import android.view.View.MeasureSpec;
class VideoPreview extends SurfaceView {
private float mAspectRatio;
private int mHorizontalTileSize = 1;
private int mVerticalTileSize = 1;
/**
* Setting the aspect ratio to this value means to not enforce an aspect ratio.
*/
public static float DONT_CARE = 0.0f;
public VideoPreview(Context context) {
super(context);
}
public VideoPreview(Context context, AttributeSet attrs) {
super(context, attrs);
}
public VideoPreview(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public void setTileSize(int horizontalTileSize, int verticalTileSize) {
if ((mHorizontalTileSize != horizontalTileSize)
|| (mVerticalTileSize != verticalTileSize)) {
mHorizontalTileSize = horizontalTileSize;
mVerticalTileSize = verticalTileSize;
requestLayout();
invalidate();
}
}
public void setAspectRatio(int width, int height) {
setAspectRatio(((float) width) / ((float) height));
}
public void setAspectRatio(float aspectRatio) {
if (mAspectRatio != aspectRatio) {
mAspectRatio = aspectRatio;
requestLayout();
invalidate();
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (mAspectRatio != DONT_CARE) {
int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec);
int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec);
int width = widthSpecSize;
int height = heightSpecSize;
if (width > 0 && height > 0) {
float defaultRatio = ((float) width) / ((float) height);
if (defaultRatio < mAspectRatio) {
// Need to reduce height
height = (int) (width / mAspectRatio);
} else if (defaultRatio > mAspectRatio) {
width = (int) (height * mAspectRatio);
}
width = roundUpToTile(width, mHorizontalTileSize, widthSpecSize);
height = roundUpToTile(height, mVerticalTileSize, heightSpecSize);
Log.i("VideoPreview", "ar " + mAspectRatio + " setting size: " + width + 'x' + height);
setMeasuredDimension(width, height);
return;
}
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
private int roundUpToTile(int dimension, int tileSize, int maxDimension) {
return Math.min(((dimension + tileSize - 1) / tileSize) * tileSize, maxDimension);
}
}
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