ShowcaseAreaCalculator.java

package com.marshalchen.common.uimodule.showcaseview;

import android.graphics.Rect;
import android.util.Log;

/**
 * Class responsible for calculating where the Showcase should position itself
 */
class ShowcaseAreaCalculator {

    private final Rect mShowcaseRect = new Rect();

    /**
     * Creates a {@link android.graphics.Rect} which represents the area the showcase covers. Used
     * to calculate where best to place the text
     *
     * @return true if voidedArea has changed, false otherwise.
     */
    public boolean calculateShowcaseRect(float x, float y, ShowcaseDrawer showcaseDrawer) {

        int cx = (int) x, cy = (int) y;
        int dw = showcaseDrawer.getShowcaseWidth();
        int dh = showcaseDrawer.getShowcaseHeight();

        if (mShowcaseRect.left == cx - dw / 2 && mShowcaseRect.top == cy - dh / 2) {
            return false;
        }

        Log.d("ShowcaseView", "Recalculated");

        mShowcaseRect.left = cx - dw / 2;
        mShowcaseRect.top = cy - dh / 2;
        mShowcaseRect.right = cx + dw / 2;
        mShowcaseRect.bottom = cy + dh / 2;

        return true;

    }

    public Rect getShowcaseRect() {
        return mShowcaseRect;
    }

}