InsetView

public interface InsetView {
    public static int INSET_NULL = -1;

    void setInset(int left, int top, int right, int bottom);

    void setInsetColor(int color);
}

Implementation

    int insetLeft = INSET_NULL, insetTop = INSET_NULL, insetRight = INSET_NULL, insetBottom = INSET_NULL;
    int insetColor;
    private OnInsetsChangedListener onInsetsChangedListener;

    public int getInsetColor() {
        return insetColor;
    }

    public void setInsetColor(int insetsColor) {
        this.insetColor = insetsColor;
    }

    public void setInset(int left, int top, int right, int bottom) {
        insetLeft = left;
        insetTop = top;
        insetRight = right;
        insetBottom = bottom;
    }

    public int getInsetLeft() {
        return insetLeft;
    }

    public void setInsetLeft(int insetLeft) {
        this.insetLeft = insetLeft;
    }

    public int getInsetTop() {
        return insetTop;
    }

    public void setInsetTop(int insetTop) {
        this.insetTop = insetTop;
    }

    public int getInsetRight() {
        return insetRight;
    }

    public void setInsetRight(int insetRight) {
        this.insetRight = insetRight;
    }

    public int getInsetBottom() {
        return insetBottom;
    }

    public void setInsetBottom(int insetBottom) {
        this.insetBottom = insetBottom;
    }

    @Override
    protected boolean fitSystemWindows(Rect insets) {
        if (insetLeft == INSET_NULL)
            insetLeft = insets.left;
        if (insetTop == INSET_NULL)
            insetTop = insets.top;
        if (insetRight == INSET_NULL)
            insetRight = insets.right;
        if (insetBottom == INSET_NULL)
            insetBottom = insets.bottom;
        insets.set(insetLeft, insetTop, insetRight, insetBottom);
        if (onInsetsChangedListener != null)
            onInsetsChangedListener.onInsetsChanged();
        postInvalidate();
        return super.fitSystemWindows(insets);
    }

    public void setOnInsetsChangedListener(OnInsetsChangedListener onInsetsChangedListener) {
        this.onInsetsChangedListener = onInsetsChangedListener;
    }