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package it.sephiroth.android.library.imagezoom.graphics;
import java.io.InputStream;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.drawable.Drawable;
/**
* Fast bitmap drawable. Does not support states. it only
* support alpha and colormatrix
* @author alessandro
*
*/
public class FastBitmapDrawable extends Drawable implements IBitmapDrawable {
protected Bitmap mBitmap;
protected Paint mPaint;
public FastBitmapDrawable( Bitmap b ) {
mBitmap = b;
mPaint = new Paint();
mPaint.setDither( true );
mPaint.setFilterBitmap( true );
}
public FastBitmapDrawable( Resources res, InputStream is ){
this(BitmapFactory.decodeStream(is));
}
@Override
public void draw( Canvas canvas ) {
canvas.drawBitmap( mBitmap, 0.0f, 0.0f, mPaint );
}
@Override
public int getOpacity() {
return PixelFormat.TRANSLUCENT;
}
@Override
public void setAlpha( int alpha ) {
mPaint.setAlpha( alpha );
}
@Override
public void setColorFilter( ColorFilter cf ) {
mPaint.setColorFilter( cf );
}
@Override
public int getIntrinsicWidth() {
return mBitmap.getWidth();
}
@Override
public int getIntrinsicHeight() {
return mBitmap.getHeight();
}
@Override
public int getMinimumWidth() {
return mBitmap.getWidth();
}
@Override
public int getMinimumHeight() {
return mBitmap.getHeight();
}
public void setAntiAlias( boolean value ){
mPaint.setAntiAlias( value );
invalidateSelf();
}
@Override
public Bitmap getBitmap() {
return mBitmap;
}
}
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