static void drawIntoBitmap (Bitmap bm)
{
float x = bm.getWidth ();
float y = bm.getHeight ();
Canvas c = new Canvas (bm);
Paint p = new Paint ();
p.setAntiAlias (true);
p.setAlpha (0x80);
c.drawCircle (x / 2, y / 2, x / 2, p);
p.setAlpha (0x30);
p.setXfermode (new PorterDuffXfermode (PorterDuff.Mode.SRC));
p.setTextSize (60);
p.setTextAlign (Paint.Align.CENTER);
Paint.FontMetrics fm = p.getFontMetrics ();
c.drawText ("Alpha", x / 2, (y - fm.ascent) / 2, p);
}
public ColorFilters (Context context)
: base (context)
{
mDrawable = getResources ().getDrawable (R.drawable.btn_default_normal);
mDrawable.setBounds (0, 0, 150, 48);
mDrawable.setDither (true);
int[] resIDs = new int[] {
R.drawable.btn_circle_normal,
R.drawable.btn_check_off,
R.drawable.btn_check_on
};
mDrawables = new Drawable[resIDs.Length];
Drawable prev = mDrawable;
for (int i = 0; i < resIDs.Length; i++) {
mDrawables [i] = getResources ().getDrawable (resIDs [i]);
mDrawables [i].setDither (true);
addToTheRight (mDrawables [i], prev);
prev = mDrawables [i];
}
mPaint = new Paint ();
mPaint.setAntiAlias (true);
mPaint.setTextSize (16);
mPaint.setTextAlign (Paint.Align.CENTER);
mPaint2 = new Paint (mPaint);
mPaint2.setAlpha (64);
Paint.FontMetrics fm = mPaint.getFontMetrics ();
mPaintTextOffset = (fm.descent + fm.ascent) * 0.5f;
mColors = new uint[] {
0, 0xCC0000FF, 0x880000FF, 0x440000FF, 0xFFCCCCFF,
0xFF8888FF, 0xFF4444FF
};
mModes = new PorterDuff.Mode[] {
PorterDuff.Mode.SRC_ATOP, PorterDuff.Mode.MULTIPLY,
};
mModeIndex = 0;
updateTitle ();
}
