src/com/android/launcher2/Utilities.java - platform/packages/apps/Launcher2 - Git at Google

 /*
  * Copyright (C) 2008 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.launcher2;

 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.PaintDrawable;
 import android.graphics.Bitmap;
 import android.graphics.BlurMaskFilter;
 import android.graphics.Canvas;
 import android.graphics.ColorMatrix;
 import android.graphics.ColorMatrixColorFilter;
 import android.graphics.Paint;
 import android.graphics.PaintFlagsDrawFilter;
 import android.graphics.PixelFormat;
 import android.graphics.PorterDuff;
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.graphics.TableMaskFilter;
 import android.graphics.Typeface;
 import android.text.Layout.Alignment;
 import android.text.StaticLayout;
 import android.text.TextPaint;
 import android.util.DisplayMetrics;
 import android.util.Log;
 import android.content.res.Resources;
 import android.content.Context;

 import com.android.launcher.R;

 /**
  * Various utilities shared amongst the Launcher's classes.
  */
 final class Utilities {
     private static final String TAG = "Launcher.Utilities";

     private static final boolean TEXT_BURN = false;

     private static int sIconWidth = -1;
     private static int sIconHeight = -1;
     private static int sIconTextureWidth = -1;
     private static int sIconTextureHeight = -1;

     private static final Paint sPaint = new Paint();
     private static final Paint sBlurPaint = new Paint();
     private static final Paint sGlowColorPressedPaint = new Paint();
     private static final Paint sGlowColorFocusedPaint = new Paint();
     private static final Paint sDisabledPaint = new Paint();
     private static final Rect sBounds = new Rect();
     private static final Rect sOldBounds = new Rect();
     private static final Canvas sCanvas = new Canvas();

     static {
         sCanvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.DITHER_FLAG,
                 Paint.FILTER_BITMAP_FLAG));
     }

     static Bitmap centerToFit(Bitmap bitmap, int width, int height, Context context) {
         final int bitmapWidth = bitmap.getWidth();
         final int bitmapHeight = bitmap.getHeight();

         if (bitmapWidth < width || bitmapHeight < height) {
             int color = context.getResources().getColor(R.color.window_background);

             Bitmap centered = Bitmap.createBitmap(bitmapWidth < width ? width : bitmapWidth,
                     bitmapHeight < height ? height : bitmapHeight, Bitmap.Config.RGB_565);
             centered.setDensity(bitmap.getDensity());
             Canvas canvas = new Canvas(centered);
             canvas.drawColor(color);
             canvas.drawBitmap(bitmap, (width - bitmapWidth) / 2.0f, (height - bitmapHeight) / 2.0f,
                     null);

             bitmap = centered;
         }

         return bitmap;
     }

     static int sColors[] = { 0xffff0000, 0xff00ff00, 0xff0000ff };
     static int sColorIndex = 0;

     /**
      * Returns a bitmap suitable for the all apps view.  The bitmap will be a power
      * of two sized ARGB_8888 bitmap that can be used as a gl texture.
      */
     static Bitmap createIconBitmap(Drawable icon, Context context) {
         synchronized (sCanvas) { // we share the statics :-(
             if (sIconWidth == -1) {
                 initStatics(context);
             }

             int width = sIconWidth;
             int height = sIconHeight;

             if (icon instanceof PaintDrawable) {
                 PaintDrawable painter = (PaintDrawable) icon;
                 painter.setIntrinsicWidth(width);
                 painter.setIntrinsicHeight(height);
             } else if (icon instanceof BitmapDrawable) {
                 // Ensure the bitmap has a density.
                 BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
                 Bitmap bitmap = bitmapDrawable.getBitmap();
                 if (bitmap.getDensity() == Bitmap.DENSITY_NONE) {
                     bitmapDrawable.setTargetDensity(context.getResources().getDisplayMetrics());
                 }
             }
             int sourceWidth = icon.getIntrinsicWidth();
             int sourceHeight = icon.getIntrinsicHeight();

             if (sourceWidth > 0 && sourceWidth > 0) {
                 // There are intrinsic sizes.
                 if (width < sourceWidth || height < sourceHeight) {
                     // It's too big, scale it down.
                     final float ratio = (float) sourceWidth / sourceHeight;
                     if (sourceWidth > sourceHeight) {
                         height = (int) (width / ratio);
                     } else if (sourceHeight > sourceWidth) {
                         width = (int) (height * ratio);
                     }
                 } else if (sourceWidth < width && sourceHeight < height) {
                     // It's small, use the size they gave us.
                     width = sourceWidth;
                     height = sourceHeight;
                 }
             }

             // no intrinsic size --> use default size
             int textureWidth = sIconTextureWidth;
             int textureHeight = sIconTextureHeight;

             final Bitmap bitmap = Bitmap.createBitmap(textureWidth, textureHeight,
                     Bitmap.Config.ARGB_8888);
             final Canvas canvas = sCanvas;
             canvas.setBitmap(bitmap);

             final int left = (textureWidth-width) / 2;
             final int top = (textureHeight-height) / 2;

             if (false) {
                 // draw a big box for the icon for debugging
                 canvas.drawColor(sColors[sColorIndex]);
                 if (++sColorIndex >= sColors.length) sColorIndex = 0;
                 Paint debugPaint = new Paint();
                 debugPaint.setColor(0xffcccc00);
                 canvas.drawRect(left, top, left+width, top+height, debugPaint);
             }

             sOldBounds.set(icon.getBounds());
             icon.setBounds(left, top, left+width, top+height);
             icon.draw(canvas);
             icon.setBounds(sOldBounds);

             return bitmap;
         }
     }

     static void drawSelectedAllAppsBitmap(Canvas dest, int destWidth, int destHeight,
             boolean pressed, Bitmap src) {
         synchronized (sCanvas) { // we share the statics :-(
             if (sIconWidth == -1) {
                 // We can't have gotten to here without src being initialized, which
                 // comes from this file already.  So just assert.
                 //initStatics(context);
                 throw new RuntimeException("Assertion failed: Utilities not initialized");
             }

             dest.drawColor(0, PorterDuff.Mode.CLEAR);

             int[] xy = new int[2];
             Bitmap mask = src.extractAlpha(sBlurPaint, xy);

             float px = (destWidth - src.getWidth()) / 2;
             float py = (destHeight - src.getHeight()) / 2;
             dest.drawBitmap(mask, px + xy[0], py + xy[1],
                     pressed ? sGlowColorPressedPaint : sGlowColorFocusedPaint);

             mask.recycle();
         }
     }

     /**
      * Returns a Bitmap representing the thumbnail of the specified Bitmap.
      * The size of the thumbnail is defined by the dimension
      * android.R.dimen.launcher_application_icon_size.
      *
      * @param bitmap The bitmap to get a thumbnail of.
      * @param context The application's context.
      *
      * @return A thumbnail for the specified bitmap or the bitmap itself if the
      *         thumbnail could not be created.
      */
     static Bitmap resampleIconBitmap(Bitmap bitmap, Context context) {
         synchronized (sCanvas) { // we share the statics :-(
             if (sIconWidth == -1) {
                 initStatics(context);
             }

             if (bitmap.getWidth() == sIconWidth && bitmap.getHeight() == sIconHeight) {
                 return bitmap;
             } else {
                 return createIconBitmap(new BitmapDrawable(bitmap), context);
             }
         }
     }

     static Bitmap drawDisabledBitmap(Bitmap bitmap, Context context) {
         synchronized (sCanvas) { // we share the statics :-(
             if (sIconWidth == -1) {
                 initStatics(context);
             }
             final Bitmap disabled = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(),
                     Bitmap.Config.ARGB_8888);
             final Canvas canvas = sCanvas;
             canvas.setBitmap(disabled);

             canvas.drawBitmap(bitmap, 0.0f, 0.0f, sDisabledPaint);

             return disabled;
         }
     }

     private static void initStatics(Context context) {
         final Resources resources = context.getResources();
         final DisplayMetrics metrics = resources.getDisplayMetrics();
         final float density = metrics.density;

         sIconWidth = sIconHeight = (int) resources.getDimension(android.R.dimen.app_icon_size);
         sIconTextureWidth = sIconTextureHeight = sIconWidth + 2;

         sBlurPaint.setMaskFilter(new BlurMaskFilter(5 * density, BlurMaskFilter.Blur.NORMAL));
         sGlowColorPressedPaint.setColor(0xffffc300);
         sGlowColorPressedPaint.setMaskFilter(TableMaskFilter.CreateClipTable(0, 30));
         sGlowColorFocusedPaint.setColor(0xffff8e00);
         sGlowColorFocusedPaint.setMaskFilter(TableMaskFilter.CreateClipTable(0, 30));

         ColorMatrix cm = new ColorMatrix();
         cm.setSaturation(0.2f);
         sDisabledPaint.setColorFilter(new ColorMatrixColorFilter(cm));
         sDisabledPaint.setAlpha(0x88);
     }

     static class BubbleText {
         private static final int MAX_LINES = 2;

         private final TextPaint mTextPaint;

         private final RectF mBubbleRect = new RectF();

         private final float mTextWidth;
         private final int mLeading;
         private final int mFirstLineY;
         private final int mLineHeight;

         private final int mBitmapWidth;
         private final int mBitmapHeight;
         private final int mDensity;

         BubbleText(Context context) {
             final Resources resources = context.getResources();

             final DisplayMetrics metrics = resources.getDisplayMetrics();
             final float scale = metrics.density;
             mDensity = metrics.densityDpi;

             final float paddingLeft = 2.0f * scale;
             final float paddingRight = 2.0f * scale;
             final float cellWidth = resources.getDimension(R.dimen.title_texture_width);

             RectF bubbleRect = mBubbleRect;
             bubbleRect.left = 0;
             bubbleRect.top = 0;
             bubbleRect.right = (int) cellWidth;

             mTextWidth = cellWidth - paddingLeft - paddingRight;

             TextPaint textPaint = mTextPaint = new TextPaint();
             textPaint.setTypeface(Typeface.DEFAULT);
             textPaint.setTextSize(13*scale);
             textPaint.setColor(0xffffffff);
             textPaint.setAntiAlias(true);
             if (TEXT_BURN) {
                 textPaint.setShadowLayer(8, 0, 0, 0xff000000);
             }

             float ascent = -textPaint.ascent();
             float descent = textPaint.descent();
             float leading = 0.0f;//(ascent+descent) * 0.1f;
             mLeading = (int)(leading + 0.5f);
             mFirstLineY = (int)(leading + ascent + 0.5f);
             mLineHeight = (int)(leading + ascent + descent + 0.5f);

             mBitmapWidth = (int)(mBubbleRect.width() + 0.5f);
             mBitmapHeight = roundToPow2((int)((MAX_LINES * mLineHeight) + leading + 0.5f));

             mBubbleRect.offsetTo((mBitmapWidth-mBubbleRect.width())/2, 0);

             if (false) {
                 Log.d(TAG, "mBitmapWidth=" + mBitmapWidth + " mBitmapHeight="
                         + mBitmapHeight + " w=" + ((int)(mBubbleRect.width() + 0.5f))
                         + " h=" + ((int)((MAX_LINES * mLineHeight) + leading + 0.5f)));
             }
         }

         /** You own the bitmap after this and you must call recycle on it. */
         Bitmap createTextBitmap(String text) {
             Bitmap b = Bitmap.createBitmap(mBitmapWidth, mBitmapHeight, Bitmap.Config.ALPHA_8);
             b.setDensity(mDensity);
             Canvas c = new Canvas(b);

             StaticLayout layout = new StaticLayout(text, mTextPaint, (int)mTextWidth,
                     Alignment.ALIGN_CENTER, 1, 0, true);
             int lineCount = layout.getLineCount();
             if (lineCount > MAX_LINES) {
                 lineCount = MAX_LINES;
             }
             //if (!TEXT_BURN && lineCount > 0) {
                 //RectF bubbleRect = mBubbleRect;
                 //bubbleRect.bottom = height(lineCount);
                 //c.drawRoundRect(bubbleRect, mCornerRadius, mCornerRadius, mRectPaint);
             //}
             for (int i=0; i<lineCount; i++) {
                 //int x = (int)((mBubbleRect.width() - layout.getLineMax(i)) / 2.0f);
                 //int y = mFirstLineY + (i * mLineHeight);
                 final String lineText = text.substring(layout.getLineStart(i), layout.getLineEnd(i));
                 int x = (int)(mBubbleRect.left
                         + ((mBubbleRect.width() - mTextPaint.measureText(lineText)) * 0.5f));
                 int y = mFirstLineY + (i * mLineHeight);
                 c.drawText(lineText, x, y, mTextPaint);
             }

             return b;
         }

         private int height(int lineCount) {
             return (int)((lineCount * mLineHeight) + mLeading + mLeading + 0.0f);
         }

         int getBubbleWidth() {
             return (int)(mBubbleRect.width() + 0.5f);
         }

         int getMaxBubbleHeight() {
             return height(MAX_LINES);
         }

         int getBitmapWidth() {
             return mBitmapWidth;
         }

         int getBitmapHeight() {
             return mBitmapHeight;
         }
     }

     /** Only works for positive numbers. */
     static int roundToPow2(int n) {
         int orig = n;
         n >>= 1;
         int mask = 0x8000000;
         while (mask != 0 && (n & mask) == 0) {
             mask >>= 1;
         }
         while (mask != 0) {
             n |= mask;
             mask >>= 1;
         }
         n += 1;
         if (n != orig) {
             n <<= 1;
         }
         return n;
     }
 }
	/*
	* Copyright (C) 2008 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.launcher2;

	import android.graphics.drawable.BitmapDrawable;
	import android.graphics.drawable.Drawable;
	import android.graphics.drawable.PaintDrawable;
	import android.graphics.Bitmap;
	import android.graphics.BlurMaskFilter;
	import android.graphics.Canvas;
	import android.graphics.ColorMatrix;
	import android.graphics.ColorMatrixColorFilter;
	import android.graphics.Paint;
	import android.graphics.PaintFlagsDrawFilter;
	import android.graphics.PixelFormat;
	import android.graphics.PorterDuff;
	import android.graphics.Rect;
	import android.graphics.RectF;
	import android.graphics.TableMaskFilter;
	import android.graphics.Typeface;
	import android.text.Layout.Alignment;
	import android.text.StaticLayout;
	import android.text.TextPaint;
	import android.util.DisplayMetrics;
	import android.util.Log;
	import android.content.res.Resources;
	import android.content.Context;

	import com.android.launcher.R;

	/**
	* Various utilities shared amongst the Launcher's classes.
	*/
	final class Utilities {
	private static final String TAG = "Launcher.Utilities";

	private static final boolean TEXT_BURN = false;

	private static int sIconWidth = -1;
	private static int sIconHeight = -1;
	private static int sIconTextureWidth = -1;
	private static int sIconTextureHeight = -1;

	private static final Paint sPaint = new Paint();
	private static final Paint sBlurPaint = new Paint();
	private static final Paint sGlowColorPressedPaint = new Paint();
	private static final Paint sGlowColorFocusedPaint = new Paint();
	private static final Paint sDisabledPaint = new Paint();
	private static final Rect sBounds = new Rect();
	private static final Rect sOldBounds = new Rect();
	private static final Canvas sCanvas = new Canvas();

	static {
	sCanvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.DITHER_FLAG,
	Paint.FILTER_BITMAP_FLAG));
	}

	static Bitmap centerToFit(Bitmap bitmap, int width, int height, Context context) {
	final int bitmapWidth = bitmap.getWidth();
	final int bitmapHeight = bitmap.getHeight();

	if (bitmapWidth < width \|\| bitmapHeight < height) {
	int color = context.getResources().getColor(R.color.window_background);

	Bitmap centered = Bitmap.createBitmap(bitmapWidth < width ? width : bitmapWidth,
	bitmapHeight < height ? height : bitmapHeight, Bitmap.Config.RGB_565);
	centered.setDensity(bitmap.getDensity());
	Canvas canvas = new Canvas(centered);
	canvas.drawColor(color);
	canvas.drawBitmap(bitmap, (width - bitmapWidth) / 2.0f, (height - bitmapHeight) / 2.0f,
	null);

	bitmap = centered;
	}

	return bitmap;
	}

	static int sColors[] = { 0xffff0000, 0xff00ff00, 0xff0000ff };
	static int sColorIndex = 0;

	/**
	* Returns a bitmap suitable for the all apps view. The bitmap will be a power
	* of two sized ARGB_8888 bitmap that can be used as a gl texture.
	*/
	static Bitmap createIconBitmap(Drawable icon, Context context) {
	synchronized (sCanvas) { // we share the statics :-(
	if (sIconWidth == -1) {
	initStatics(context);
	}

	int width = sIconWidth;
	int height = sIconHeight;

	if (icon instanceof PaintDrawable) {
	PaintDrawable painter = (PaintDrawable) icon;
	painter.setIntrinsicWidth(width);
	painter.setIntrinsicHeight(height);
	} else if (icon instanceof BitmapDrawable) {
	// Ensure the bitmap has a density.
	BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
	Bitmap bitmap = bitmapDrawable.getBitmap();
	if (bitmap.getDensity() == Bitmap.DENSITY_NONE) {
	bitmapDrawable.setTargetDensity(context.getResources().getDisplayMetrics());
	}
	}
	int sourceWidth = icon.getIntrinsicWidth();
	int sourceHeight = icon.getIntrinsicHeight();

	if (sourceWidth > 0 && sourceWidth > 0) {
	// There are intrinsic sizes.
	if (width < sourceWidth \|\| height < sourceHeight) {
	// It's too big, scale it down.
	final float ratio = (float) sourceWidth / sourceHeight;
	if (sourceWidth > sourceHeight) {
	height = (int) (width / ratio);
	} else if (sourceHeight > sourceWidth) {
	width = (int) (height * ratio);
	}
	} else if (sourceWidth < width && sourceHeight < height) {
	// It's small, use the size they gave us.
	width = sourceWidth;
	height = sourceHeight;
	}
	}

	// no intrinsic size --> use default size
	int textureWidth = sIconTextureWidth;
	int textureHeight = sIconTextureHeight;

	final Bitmap bitmap = Bitmap.createBitmap(textureWidth, textureHeight,
	Bitmap.Config.ARGB_8888);
	final Canvas canvas = sCanvas;
	canvas.setBitmap(bitmap);

	final int left = (textureWidth-width) / 2;
	final int top = (textureHeight-height) / 2;

	if (false) {
	// draw a big box for the icon for debugging
	canvas.drawColor(sColors[sColorIndex]);
	if (++sColorIndex >= sColors.length) sColorIndex = 0;
	Paint debugPaint = new Paint();
	debugPaint.setColor(0xffcccc00);
	canvas.drawRect(left, top, left+width, top+height, debugPaint);
	}

	sOldBounds.set(icon.getBounds());
	icon.setBounds(left, top, left+width, top+height);
	icon.draw(canvas);
	icon.setBounds(sOldBounds);

	return bitmap;
	}
	}

	static void drawSelectedAllAppsBitmap(Canvas dest, int destWidth, int destHeight,
	boolean pressed, Bitmap src) {
	synchronized (sCanvas) { // we share the statics :-(
	if (sIconWidth == -1) {
	// We can't have gotten to here without src being initialized, which
	// comes from this file already. So just assert.
	//initStatics(context);
	throw new RuntimeException("Assertion failed: Utilities not initialized");
	}

	dest.drawColor(0, PorterDuff.Mode.CLEAR);

	int[] xy = new int[2];
	Bitmap mask = src.extractAlpha(sBlurPaint, xy);

	float px = (destWidth - src.getWidth()) / 2;
	float py = (destHeight - src.getHeight()) / 2;
	dest.drawBitmap(mask, px + xy[0], py + xy[1],
	pressed ? sGlowColorPressedPaint : sGlowColorFocusedPaint);

	mask.recycle();
	}
	}

	/**
	* Returns a Bitmap representing the thumbnail of the specified Bitmap.
	* The size of the thumbnail is defined by the dimension
	* android.R.dimen.launcher_application_icon_size.
	*
	* @param bitmap The bitmap to get a thumbnail of.
	* @param context The application's context.
	*
	* @return A thumbnail for the specified bitmap or the bitmap itself if the
	* thumbnail could not be created.
	*/
	static Bitmap resampleIconBitmap(Bitmap bitmap, Context context) {
	synchronized (sCanvas) { // we share the statics :-(
	if (sIconWidth == -1) {
	initStatics(context);
	}

	if (bitmap.getWidth() == sIconWidth && bitmap.getHeight() == sIconHeight) {
	return bitmap;
	} else {
	return createIconBitmap(new BitmapDrawable(bitmap), context);
	}
	}
	}

	static Bitmap drawDisabledBitmap(Bitmap bitmap, Context context) {
	synchronized (sCanvas) { // we share the statics :-(
	if (sIconWidth == -1) {
	initStatics(context);
	}
	final Bitmap disabled = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(),
	Bitmap.Config.ARGB_8888);
	final Canvas canvas = sCanvas;
	canvas.setBitmap(disabled);

	canvas.drawBitmap(bitmap, 0.0f, 0.0f, sDisabledPaint);

	return disabled;
	}
	}

	private static void initStatics(Context context) {
	final Resources resources = context.getResources();
	final DisplayMetrics metrics = resources.getDisplayMetrics();
	final float density = metrics.density;

	sIconWidth = sIconHeight = (int) resources.getDimension(android.R.dimen.app_icon_size);
	sIconTextureWidth = sIconTextureHeight = sIconWidth + 2;

	sBlurPaint.setMaskFilter(new BlurMaskFilter(5 * density, BlurMaskFilter.Blur.NORMAL));
	sGlowColorPressedPaint.setColor(0xffffc300);
	sGlowColorPressedPaint.setMaskFilter(TableMaskFilter.CreateClipTable(0, 30));
	sGlowColorFocusedPaint.setColor(0xffff8e00);
	sGlowColorFocusedPaint.setMaskFilter(TableMaskFilter.CreateClipTable(0, 30));

	ColorMatrix cm = new ColorMatrix();
	cm.setSaturation(0.2f);
	sDisabledPaint.setColorFilter(new ColorMatrixColorFilter(cm));
	sDisabledPaint.setAlpha(0x88);
	}

	static class BubbleText {
	private static final int MAX_LINES = 2;

	private final TextPaint mTextPaint;

	private final RectF mBubbleRect = new RectF();

	private final float mTextWidth;
	private final int mLeading;
	private final int mFirstLineY;
	private final int mLineHeight;

	private final int mBitmapWidth;
	private final int mBitmapHeight;
	private final int mDensity;

	BubbleText(Context context) {
	final Resources resources = context.getResources();

	final DisplayMetrics metrics = resources.getDisplayMetrics();
	final float scale = metrics.density;
	mDensity = metrics.densityDpi;

	final float paddingLeft = 2.0f * scale;
	final float paddingRight = 2.0f * scale;
	final float cellWidth = resources.getDimension(R.dimen.title_texture_width);

	RectF bubbleRect = mBubbleRect;
	bubbleRect.left = 0;
	bubbleRect.top = 0;
	bubbleRect.right = (int) cellWidth;

	mTextWidth = cellWidth - paddingLeft - paddingRight;

	TextPaint textPaint = mTextPaint = new TextPaint();
	textPaint.setTypeface(Typeface.DEFAULT);
	textPaint.setTextSize(13*scale);
	textPaint.setColor(0xffffffff);
	textPaint.setAntiAlias(true);
	if (TEXT_BURN) {
	textPaint.setShadowLayer(8, 0, 0, 0xff000000);
	}

	float ascent = -textPaint.ascent();
	float descent = textPaint.descent();
	float leading = 0.0f;//(ascent+descent) * 0.1f;
	mLeading = (int)(leading + 0.5f);
	mFirstLineY = (int)(leading + ascent + 0.5f);
	mLineHeight = (int)(leading + ascent + descent + 0.5f);

	mBitmapWidth = (int)(mBubbleRect.width() + 0.5f);
	mBitmapHeight = roundToPow2((int)((MAX_LINES * mLineHeight) + leading + 0.5f));

	mBubbleRect.offsetTo((mBitmapWidth-mBubbleRect.width())/2, 0);

	if (false) {
	Log.d(TAG, "mBitmapWidth=" + mBitmapWidth + " mBitmapHeight="
	+ mBitmapHeight + " w=" + ((int)(mBubbleRect.width() + 0.5f))
	+ " h=" + ((int)((MAX_LINES * mLineHeight) + leading + 0.5f)));
	}
	}

	/** You own the bitmap after this and you must call recycle on it. */
	Bitmap createTextBitmap(String text) {
	Bitmap b = Bitmap.createBitmap(mBitmapWidth, mBitmapHeight, Bitmap.Config.ALPHA_8);
	b.setDensity(mDensity);
	Canvas c = new Canvas(b);

	StaticLayout layout = new StaticLayout(text, mTextPaint, (int)mTextWidth,
	Alignment.ALIGN_CENTER, 1, 0, true);
	int lineCount = layout.getLineCount();
	if (lineCount > MAX_LINES) {
	lineCount = MAX_LINES;
	}
	//if (!TEXT_BURN && lineCount > 0) {
	//RectF bubbleRect = mBubbleRect;
	//bubbleRect.bottom = height(lineCount);
	//c.drawRoundRect(bubbleRect, mCornerRadius, mCornerRadius, mRectPaint);
	//}
	for (int i=0; i<lineCount; i++) {
	//int x = (int)((mBubbleRect.width() - layout.getLineMax(i)) / 2.0f);
	//int y = mFirstLineY + (i * mLineHeight);
	final String lineText = text.substring(layout.getLineStart(i), layout.getLineEnd(i));
	int x = (int)(mBubbleRect.left
	+ ((mBubbleRect.width() - mTextPaint.measureText(lineText)) * 0.5f));
	int y = mFirstLineY + (i * mLineHeight);
	c.drawText(lineText, x, y, mTextPaint);
	}

	return b;
	}

	private int height(int lineCount) {
	return (int)((lineCount * mLineHeight) + mLeading + mLeading + 0.0f);
	}

	int getBubbleWidth() {
	return (int)(mBubbleRect.width() + 0.5f);
	}

	int getMaxBubbleHeight() {
	return height(MAX_LINES);
	}

	int getBitmapWidth() {
	return mBitmapWidth;
	}

	int getBitmapHeight() {
	return mBitmapHeight;
	}
	}

	/** Only works for positive numbers. */
	static int roundToPow2(int n) {
	int orig = n;
	n >>= 1;
	int mask = 0x8000000;
	while (mask != 0 && (n & mask) == 0) {
	mask >>= 1;
	}
	while (mask != 0) {
	n \|= mask;
	mask >>= 1;
	}
	n += 1;
	if (n != orig) {
	n <<= 1;
	}
	return n;
	}
	}