Slate.java 文件源码

public void clear() {
    if (mTiledCanvas != null) {
        commitStroke();
        mTiledCanvas.drawColor(0x00000000, PorterDuff.Mode.SRC);
        invalidate();
    } else if (mPendingPaintBitmap != null) { // FIXME for tiling
        mPendingPaintBitmap.recycle();
        mPendingPaintBitmap = null;
    }
    mEmpty = true;

    // reset the zoom when clearing
    resetZoom();
}