src/com/android/gallery3d/ui/CacheBarView.java - fp2-dev/platform/packages/apps/Gallery2 - Gitiles

 /*
  * Copyright (C) 2010 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.ui;

 import com.android.gallery3d.R;
 import com.android.gallery3d.app.GalleryActivity;
 import com.android.gallery3d.util.Future;
 import com.android.gallery3d.util.FutureListener;
 import com.android.gallery3d.util.ThreadPool.Job;
 import com.android.gallery3d.util.ThreadPool.JobContext;

 import android.content.Context;
 import android.graphics.Color;
 import android.graphics.Rect;
 import android.os.Handler;
 import android.os.Message;
 import android.os.StatFs;
 import android.text.format.Formatter;
 import android.view.View.MeasureSpec;

 import java.io.File;

 public class CacheBarView extends GLView implements TextButton.OnClickedListener {
     private static final String TAG = "CacheBarView";
     private static final int FONT_COLOR = 0xffffffff;
     private static final int MSG_REFRESH_STORAGE = 1;
     private static final int PIN_SIZE = 36;

     public interface Listener {
         void onDoneClicked();
     }

     private GalleryActivity mActivity;
     private Context mContext;

     private StorageInfo mStorageInfo;
     private long mUserChangeDelta;
     private Future<StorageInfo> mStorageInfoFuture;
     private Handler mHandler;

     private int mTotalHeight;
     private int mPinLeftMargin;
     private int mPinRightMargin;
     private int mButtonRightMargin;

     private NinePatchTexture mBackground;
     private GLView mLeftPin;            // The pin icon.
     private GLView mLeftLabel;          // "Make available offline"
     private ProgressBar mStorageBar;
     private Label mStorageLabel;        // "27.26 GB free"
     private TextButton mDoneButton;     // "Done"

     private Listener mListener;

     public CacheBarView(GalleryActivity activity, int resBackground, int height,
             int pinLeftMargin, int pinRightMargin, int buttonRightMargin,
             int fontSize) {
         mActivity = activity;
         mContext = activity.getAndroidContext();

         mPinLeftMargin = pinLeftMargin;
         mPinRightMargin = pinRightMargin;
         mButtonRightMargin = buttonRightMargin;

         mBackground = new NinePatchTexture(mContext, resBackground);
         Rect paddings = mBackground.getPaddings();

         // The total height of the strip that includes the bar containing Pin,
         // Label, DoneButton, ..., ect. and the extended fading bar.
         mTotalHeight = height + paddings.top;

         mLeftPin = new Icon(mContext, R.drawable.ic_manage_pin, PIN_SIZE, PIN_SIZE);
         mLeftLabel = new Label(mContext, R.string.make_available_offline,
                 fontSize, FONT_COLOR);
         addComponent(mLeftPin);
         addComponent(mLeftLabel);

         mDoneButton = new TextButton(mContext, R.string.done);
         mDoneButton.setOnClickListener(this);
         NinePatchTexture normal = new NinePatchTexture(
                 mContext, R.drawable.btn_default_normal_holo_dark);
         NinePatchTexture pressed = new NinePatchTexture(
                 mContext, R.drawable.btn_default_pressed_holo_dark);
         mDoneButton.setNormalBackground(normal);
         mDoneButton.setPressedBackground(pressed);
         addComponent(mDoneButton);

         // Initially the progress bar and label are invisible.
         // It will be made visible after we have the storage information.
         mStorageBar = new ProgressBar(mContext,
                 R.drawable.progress_primary_holo_dark,
                 R.drawable.progress_secondary_holo_dark,
                 R.drawable.progress_bg_holo_dark);
         mStorageLabel = new Label(mContext, "", 14, Color.WHITE);
         addComponent(mStorageBar);
         addComponent(mStorageLabel);
         mStorageBar.setVisibility(GLView.INVISIBLE);
         mStorageLabel.setVisibility(GLView.INVISIBLE);

         mHandler = new SynchronizedHandler(activity.getGLRoot()) {
             @Override
             public void handleMessage(Message msg) {
                 switch(msg.what) {
                     case MSG_REFRESH_STORAGE:
                         mStorageInfo = (StorageInfo) msg.obj;
                         refreshStorageInfo();
                         break;
                 }
             }
         };
     }

     public void setListener(Listener listener) {
         mListener = listener;
     }

     // Called by mDoneButton
     public void onClicked(GLView source) {
         if (mListener != null) {
             mListener.onDoneClicked();
         }
     }

     @Override
     protected void onLayout(
             boolean changed, int left, int top, int right, int bottom) {
         // The size of mStorageLabel can change, so we need to layout
         // even if the size of CacheBarView does not change.
         int w = right - left;
         int h = bottom - top;

         mLeftPin.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
         int pinH = mLeftPin.getMeasuredHeight();
         int pinW = mLeftPin.getMeasuredWidth();
         int pinT = (h - pinH) / 2;
         int pinL = mPinLeftMargin;
         mLeftPin.layout(pinL, pinT, pinL + pinW, pinT + pinH);

         mLeftLabel.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
         int labelH = mLeftLabel.getMeasuredHeight();
         int labelW = mLeftLabel.getMeasuredWidth();
         int labelT = (h - labelH) / 2;
         int labelL = pinL + pinW + mPinRightMargin;
         mLeftLabel.layout(labelL, labelT, labelL + labelW, labelT + labelH);

         mDoneButton.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
         int doneH = mDoneButton.getMeasuredHeight();
         int doneW = mDoneButton.getMeasuredWidth();
         int doneT = (h - doneH) / 2;
         int doneR = w - mButtonRightMargin;
         mDoneButton.layout(doneR - doneW, doneT, doneR, doneT + doneH);

         int centerX = w / 2;
         int centerY = h / 2;

         int capBarH = 20;
         int capBarW = 200;
         int capBarT = centerY - capBarH / 2;
         int capBarL = centerX - capBarW / 2;
         mStorageBar.layout(capBarL, capBarT, capBarL + capBarW,
                 capBarT + capBarH);

         mStorageLabel.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
         int capLabelH = mStorageLabel.getMeasuredHeight();
         int capLabelW = mStorageLabel.getMeasuredWidth();
         int capLabelT = centerY - capLabelH / 2;
         int capLabelL = centerX + capBarW / 2 + 8;
         mStorageLabel.layout(capLabelL , capLabelT, capLabelL + capLabelW,
                 capLabelT + capLabelH);
     }

     public void refreshStorageInfo() {
         long used = mStorageInfo.usedBytes;
         long total = mStorageInfo.totalBytes;
         long cached = mStorageInfo.usedCacheBytes;
         long target = mStorageInfo.targetCacheBytes;

         double primary = (double) used / total;
         double secondary =
                 (double) (used - cached + target + mUserChangeDelta) / total;

         mStorageBar.setProgress((int) (primary * 10000));
         mStorageBar.setSecondaryProgress((int) (secondary * 10000));

         long freeBytes = mStorageInfo.totalBytes - mStorageInfo.usedBytes;
         String sizeString = Formatter.formatFileSize(mContext, freeBytes);
         String label = mContext.getString(R.string.free_space_format, sizeString);
         mStorageLabel.setText(label);
         mStorageBar.setVisibility(GLView.VISIBLE);
         mStorageLabel.setVisibility(GLView.VISIBLE);
         requestLayout(); // because the size of the label may have changed.
     }

     public void increaseTargetCacheSize(long delta) {
         mUserChangeDelta += delta;
         refreshStorageInfo();
     }

     @Override
     protected void renderBackground(GLCanvas canvas) {
         Rect paddings = mBackground.getPaddings();
         mBackground.draw(canvas, 0, -paddings.top, getWidth(), mTotalHeight);
     }

     public void resume() {
         mStorageInfoFuture = mActivity.getThreadPool().submit(
             new StorageInfoJob(),
             new FutureListener<StorageInfo>() {
                     public void onFutureDone(Future<StorageInfo> future) {
                         mStorageInfoFuture = null;
                         if (!future.isCancelled()) {
                             mHandler.sendMessage(mHandler.obtainMessage(
                                     MSG_REFRESH_STORAGE, future.get()));
                         }
                     }
                 });
     }

     public void pause() {
         if (mStorageInfoFuture != null) {
             mStorageInfoFuture.cancel();
             mStorageInfoFuture = null;
         }
         mStorageBar.setVisibility(GLView.INVISIBLE);
         mStorageLabel.setVisibility(GLView.INVISIBLE);
     }

     public static class StorageInfo {
         long totalBytes;      // number of bytes the storage has.
         long usedBytes;       // number of bytes already used.
         long usedCacheBytes;  // number of bytes used for the cache (should be less
                               // then usedBytes).
         long targetCacheBytes;// number of bytes used for the cache
                               // if all pending downloads (and removals) are completed.
     }

     private class StorageInfoJob implements Job<StorageInfo> {
         public StorageInfo run(JobContext jc) {
             File cacheDir = mContext.getExternalCacheDir();
             if (cacheDir == null) {
                 cacheDir = mContext.getCacheDir();
             }
             String path = cacheDir.getAbsolutePath();
             StatFs stat = new StatFs(path);
             long blockSize = stat.getBlockSize();
             long availableBlocks = stat.getAvailableBlocks();
             long totalBlocks = stat.getBlockCount();
             StorageInfo si = new StorageInfo();
             si.totalBytes = blockSize * totalBlocks;
             si.usedBytes = blockSize * (totalBlocks - availableBlocks);
             si.usedCacheBytes = mActivity.getDataManager().getTotalUsedCacheSize();
             si.targetCacheBytes = mActivity.getDataManager().getTotalTargetCacheSize();
             return si;
         }
     }
 }
	/*
	* Copyright (C) 2010 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.ui;

	import com.android.gallery3d.R;
	import com.android.gallery3d.app.GalleryActivity;
	import com.android.gallery3d.util.Future;
	import com.android.gallery3d.util.FutureListener;
	import com.android.gallery3d.util.ThreadPool.Job;
	import com.android.gallery3d.util.ThreadPool.JobContext;

	import android.content.Context;
	import android.graphics.Color;
	import android.graphics.Rect;
	import android.os.Handler;
	import android.os.Message;
	import android.os.StatFs;
	import android.text.format.Formatter;
	import android.view.View.MeasureSpec;

	import java.io.File;

	public class CacheBarView extends GLView implements TextButton.OnClickedListener {
	private static final String TAG = "CacheBarView";
	private static final int FONT_COLOR = 0xffffffff;
	private static final int MSG_REFRESH_STORAGE = 1;
	private static final int PIN_SIZE = 36;

	public interface Listener {
	void onDoneClicked();
	}

	private GalleryActivity mActivity;
	private Context mContext;

	private StorageInfo mStorageInfo;
	private long mUserChangeDelta;
	private Future<StorageInfo> mStorageInfoFuture;
	private Handler mHandler;

	private int mTotalHeight;
	private int mPinLeftMargin;
	private int mPinRightMargin;
	private int mButtonRightMargin;

	private NinePatchTexture mBackground;
	private GLView mLeftPin; // The pin icon.
	private GLView mLeftLabel; // "Make available offline"
	private ProgressBar mStorageBar;
	private Label mStorageLabel; // "27.26 GB free"
	private TextButton mDoneButton; // "Done"

	private Listener mListener;

	public CacheBarView(GalleryActivity activity, int resBackground, int height,
	int pinLeftMargin, int pinRightMargin, int buttonRightMargin,
	int fontSize) {
	mActivity = activity;
	mContext = activity.getAndroidContext();

	mPinLeftMargin = pinLeftMargin;
	mPinRightMargin = pinRightMargin;
	mButtonRightMargin = buttonRightMargin;

	mBackground = new NinePatchTexture(mContext, resBackground);
	Rect paddings = mBackground.getPaddings();

	// The total height of the strip that includes the bar containing Pin,
	// Label, DoneButton, ..., ect. and the extended fading bar.
	mTotalHeight = height + paddings.top;

	mLeftPin = new Icon(mContext, R.drawable.ic_manage_pin, PIN_SIZE, PIN_SIZE);
	mLeftLabel = new Label(mContext, R.string.make_available_offline,
	fontSize, FONT_COLOR);
	addComponent(mLeftPin);
	addComponent(mLeftLabel);

	mDoneButton = new TextButton(mContext, R.string.done);
	mDoneButton.setOnClickListener(this);
	NinePatchTexture normal = new NinePatchTexture(
	mContext, R.drawable.btn_default_normal_holo_dark);
	NinePatchTexture pressed = new NinePatchTexture(
	mContext, R.drawable.btn_default_pressed_holo_dark);
	mDoneButton.setNormalBackground(normal);
	mDoneButton.setPressedBackground(pressed);
	addComponent(mDoneButton);

	// Initially the progress bar and label are invisible.
	// It will be made visible after we have the storage information.
	mStorageBar = new ProgressBar(mContext,
	R.drawable.progress_primary_holo_dark,
	R.drawable.progress_secondary_holo_dark,
	R.drawable.progress_bg_holo_dark);
	mStorageLabel = new Label(mContext, "", 14, Color.WHITE);
	addComponent(mStorageBar);
	addComponent(mStorageLabel);
	mStorageBar.setVisibility(GLView.INVISIBLE);
	mStorageLabel.setVisibility(GLView.INVISIBLE);

	mHandler = new SynchronizedHandler(activity.getGLRoot()) {
	@Override
	public void handleMessage(Message msg) {
	switch(msg.what) {
	case MSG_REFRESH_STORAGE:
	mStorageInfo = (StorageInfo) msg.obj;
	refreshStorageInfo();
	break;
	}
	}
	};
	}

	public void setListener(Listener listener) {
	mListener = listener;
	}

	// Called by mDoneButton
	public void onClicked(GLView source) {
	if (mListener != null) {
	mListener.onDoneClicked();
	}
	}

	@Override
	protected void onLayout(
	boolean changed, int left, int top, int right, int bottom) {
	// The size of mStorageLabel can change, so we need to layout
	// even if the size of CacheBarView does not change.
	int w = right - left;
	int h = bottom - top;

	mLeftPin.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
	int pinH = mLeftPin.getMeasuredHeight();
	int pinW = mLeftPin.getMeasuredWidth();
	int pinT = (h - pinH) / 2;
	int pinL = mPinLeftMargin;
	mLeftPin.layout(pinL, pinT, pinL + pinW, pinT + pinH);

	mLeftLabel.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
	int labelH = mLeftLabel.getMeasuredHeight();
	int labelW = mLeftLabel.getMeasuredWidth();
	int labelT = (h - labelH) / 2;
	int labelL = pinL + pinW + mPinRightMargin;
	mLeftLabel.layout(labelL, labelT, labelL + labelW, labelT + labelH);

	mDoneButton.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
	int doneH = mDoneButton.getMeasuredHeight();
	int doneW = mDoneButton.getMeasuredWidth();
	int doneT = (h - doneH) / 2;
	int doneR = w - mButtonRightMargin;
	mDoneButton.layout(doneR - doneW, doneT, doneR, doneT + doneH);

	int centerX = w / 2;
	int centerY = h / 2;

	int capBarH = 20;
	int capBarW = 200;
	int capBarT = centerY - capBarH / 2;
	int capBarL = centerX - capBarW / 2;
	mStorageBar.layout(capBarL, capBarT, capBarL + capBarW,
	capBarT + capBarH);

	mStorageLabel.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
	int capLabelH = mStorageLabel.getMeasuredHeight();
	int capLabelW = mStorageLabel.getMeasuredWidth();
	int capLabelT = centerY - capLabelH / 2;
	int capLabelL = centerX + capBarW / 2 + 8;
	mStorageLabel.layout(capLabelL , capLabelT, capLabelL + capLabelW,
	capLabelT + capLabelH);
	}

	public void refreshStorageInfo() {
	long used = mStorageInfo.usedBytes;
	long total = mStorageInfo.totalBytes;
	long cached = mStorageInfo.usedCacheBytes;
	long target = mStorageInfo.targetCacheBytes;

	double primary = (double) used / total;
	double secondary =
	(double) (used - cached + target + mUserChangeDelta) / total;

	mStorageBar.setProgress((int) (primary * 10000));
	mStorageBar.setSecondaryProgress((int) (secondary * 10000));

	long freeBytes = mStorageInfo.totalBytes - mStorageInfo.usedBytes;
	String sizeString = Formatter.formatFileSize(mContext, freeBytes);
	String label = mContext.getString(R.string.free_space_format, sizeString);
	mStorageLabel.setText(label);
	mStorageBar.setVisibility(GLView.VISIBLE);
	mStorageLabel.setVisibility(GLView.VISIBLE);
	requestLayout(); // because the size of the label may have changed.
	}

	public void increaseTargetCacheSize(long delta) {
	mUserChangeDelta += delta;
	refreshStorageInfo();
	}

	@Override
	protected void renderBackground(GLCanvas canvas) {
	Rect paddings = mBackground.getPaddings();
	mBackground.draw(canvas, 0, -paddings.top, getWidth(), mTotalHeight);
	}

	public void resume() {
	mStorageInfoFuture = mActivity.getThreadPool().submit(
	new StorageInfoJob(),
	new FutureListener<StorageInfo>() {
	public void onFutureDone(Future<StorageInfo> future) {
	mStorageInfoFuture = null;
	if (!future.isCancelled()) {
	mHandler.sendMessage(mHandler.obtainMessage(
	MSG_REFRESH_STORAGE, future.get()));
	}
	}
	});
	}

	public void pause() {
	if (mStorageInfoFuture != null) {
	mStorageInfoFuture.cancel();
	mStorageInfoFuture = null;
	}
	mStorageBar.setVisibility(GLView.INVISIBLE);
	mStorageLabel.setVisibility(GLView.INVISIBLE);
	}

	public static class StorageInfo {
	long totalBytes; // number of bytes the storage has.
	long usedBytes; // number of bytes already used.
	long usedCacheBytes; // number of bytes used for the cache (should be less
	// then usedBytes).
	long targetCacheBytes;// number of bytes used for the cache
	// if all pending downloads (and removals) are completed.
	}

	private class StorageInfoJob implements Job<StorageInfo> {
	public StorageInfo run(JobContext jc) {
	File cacheDir = mContext.getExternalCacheDir();
	if (cacheDir == null) {
	cacheDir = mContext.getCacheDir();
	}
	String path = cacheDir.getAbsolutePath();
	StatFs stat = new StatFs(path);
	long blockSize = stat.getBlockSize();
	long availableBlocks = stat.getAvailableBlocks();
	long totalBlocks = stat.getBlockCount();
	StorageInfo si = new StorageInfo();
	si.totalBytes = blockSize * totalBlocks;
	si.usedBytes = blockSize * (totalBlocks - availableBlocks);
	si.usedCacheBytes = mActivity.getDataManager().getTotalUsedCacheSize();
	si.targetCacheBytes = mActivity.getDataManager().getTotalTargetCacheSize();
	return si;
	}
	}
	}