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clean up rollo / launcher2

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This commit is contained in:
Joe Onorato
2009-08-07 14:33:40 -07:00
parent 9383905560
commit bf15cb44cc
8 changed files with 200 additions and 51 deletions
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117
src/com/android/launcher2/Utilities.java
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@@ -20,12 +20,18 @@ import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.PaintDrawable;
import android.graphics.Bitmap;
import android.graphics.PixelFormat;
import android.graphics.Canvas;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.RectF;
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;
@@ -201,4 +207,111 @@ final class Utilities {
return bitmap;
}
static class BubbleText {
private static final int MAX_LINES = 2;
private TextPaint mTextPaint;
private Paint mRectPaint;
private float mBubblePadding;
private float mCornerRadius;
private RectF mBubbleRect = new RectF();
private float mTextWidth;
private int mLeading;
private int mFirstLineY;
private int mLineHeight;
private int mBitmapWidth;
private int mBitmapHeight;
BubbleText(Context context) {
final Resources resources = context.getResources();
final float scale = resources.getDisplayMetrics().density;
final float paddingLeft = 5.0f * scale;
final float paddingRight = 5.0f * scale;
final float cellWidth = resources.getDimension(R.dimen.workspace_cell_width);
final float bubbleWidth = cellWidth - paddingLeft - paddingRight;
mBubblePadding = 5.0f * scale;
RectF bubbleRect = mBubbleRect;
bubbleRect.left = 0;
bubbleRect.top = 0;
bubbleRect.right = (int)(bubbleWidth+0.5f);
mCornerRadius = BubbleTextView.CORNER_RADIUS * scale;
mTextWidth = bubbleWidth - mBubblePadding - mBubblePadding;
Paint rectPaint = mRectPaint = new Paint();
rectPaint.setColor(0xff000000);
TextPaint textPaint = mTextPaint = new TextPaint();
textPaint.setTypeface(Typeface.DEFAULT_BOLD);
textPaint.setTextSize(20);
textPaint.setColor(0xffffffff);
float ascent = -textPaint.ascent();
float descent = textPaint.descent();
float leading = (ascent+descent) * 0.1f;
mLeading = (int)(leading + 0.5f);
mFirstLineY = (int)(leading + ascent + 0.5f);
mLineHeight = (int)(leading + ascent + descent + 0.5f);
roundToPow2(64);
mBitmapWidth = roundToPow2((int)(mBubbleRect.width() + 0.5f));
mBitmapHeight = roundToPow2((int)((MAX_LINES * mLineHeight) + mLeading + 0.5f));
Log.d(Launcher.LOG_TAG, "mBitmapWidth=" + mBitmapWidth + " mBitmapHeight="
+ mBitmapHeight + " w=" + ((int)(mBubbleRect.width() + 0.5f))
+ " h=" + ((int)((MAX_LINES * mLineHeight) + mLeading + 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.ARGB_8888);
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 (lineCount > 0) {
RectF bubbleRect = mBubbleRect;
bubbleRect.bottom = (int)((lineCount * mLineHeight) + mLeading + mLeading + 0.0f);
c.drawRoundRect(bubbleRect, mCornerRadius, mCornerRadius, mRectPaint);
Log.d(Launcher.LOG_TAG, "bubbleRect=" + bubbleRect);
}
for (int i=0; i<lineCount; i++) {
int x = (int)((mBubbleRect.width() - layout.getLineMax(i)) / 2.0f);
int y = mFirstLineY + (i * mLineHeight);
c.drawText(text.substring(layout.getLineStart(i), layout.getLineEnd(i)),
x, y, mTextPaint);
}
return b;
}
}
/** 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;
}
}