ActionBarButtonBackground.java 文件源码

public ActionBarButtonBackground(int accentHeight, int strokeWidth, Integer strokeColor, Integer accentColor, Integer fillColor, Integer highlightColor, ActionBarOptions.ColorLayout colorLayout) {
    super(new Drawable[] { 
            new PaintDrawable((strokeColor == null) ? DEFAULT_STROKE_COLOR : strokeColor),  
            new PaintDrawable((accentColor == null) ? DEFAULT_ACCENT_COLOR : accentColor), 
            new PaintDrawable((highlightColor == null) ? DEFAULT_HIGHLIGHT_COLOR : highlightColor),
            new PaintDrawable((fillColor == null) ? DEFAULT_FILL_COLOR : fillColor)});


    if(colorLayout.equals(ColorLayout.TOP)) {
        setLayerInset(1, strokeWidth, strokeWidth, 0, 0);
        setLayerInset(2, strokeWidth, accentHeight+strokeWidth, 0, 0);
        setLayerInset(3, strokeWidth, accentHeight+strokeWidth, 0, strokeWidth);
    }
    else {
        setLayerInset(1, strokeWidth, 0, 0, strokeWidth);
        setLayerInset(2, strokeWidth, 0, 0, accentHeight+strokeWidth);
        setLayerInset(3, strokeWidth, strokeWidth, 0, accentHeight+strokeWidth);
    }
}