gistfile1.java

    /**
     * Gets the size of content fitted inside a container while maintaining its aspect ratio.
     *
     * @param containerWidth  width of the container.
     * @param containerHeight height of the container.
     * @param contentWidth    width of the content.
     * @param contentHeight   height of the content.
     * @return a {@link Point} where the (x, y) corresponds to the (width, height) of the content fitted inside the
     * container.
     */
    public static Point getAspectFitSize(int containerWidth, int containerHeight, int contentWidth, int contentHeight) {
        int fittedContentWidth = containerWidth;
        int fittedContentHeight = containerHeight;

        // Compare parent and child aspect ratio.
        if (containerWidth * contentHeight > containerHeight * contentWidth) {
            // Max out the height. Calculate width while maintaining the aspect ratio.
            fittedContentWidth = contentWidth * containerHeight / contentHeight;
            fittedContentHeight = containerHeight;
        } else {
            // Max out the width. Calculate height while maintaining the aspect ratio.
            fittedContentWidth = containerWidth;
            fittedContentHeight = contentHeight * containerWidth / contentWidth;
        }

        return new Point(fittedContentWidth, fittedContentHeight);
    }