com.bellman.bible.android.view.util.buttongrid.LayoutDesigner.java Source code

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Here is the source code for com.bellman.bible.android.view.util.buttongrid.LayoutDesigner.java

Source

package com.bellman.bible.android.view.util.buttongrid;

import android.util.Log;

import com.bellman.bible.android.view.util.buttongrid.ButtonGrid.ButtonInfo;
import com.bellman.bible.service.common.CommonUtils;

import org.apache.commons.lang3.StringUtils;

import java.util.List;

/**
 * Calculate the number of columns and rows to be used to layout a grid of bible books, numbers, or whatever
 *
 * @author Martin Denham [mjdenham at gmail dot com]
 * @see gnu.lgpl.License for license details.<br>
 * The copyright to this program is held by it's author.
 */
public class LayoutDesigner {

    private static final String TAG = "LayoutDesigner";
    private static int MIN_COLS = 5;
    private static int MIN_COLS_LAND = 8;
    private static RowColLayout BIBLE_BOOK_LAYOUT = new RowColLayout();
    private static RowColLayout BIBLE_BOOK_LAYOUT_LAND = new RowColLayout();

    static {
        BIBLE_BOOK_LAYOUT.rows = 11;
        BIBLE_BOOK_LAYOUT.cols = 6;

        BIBLE_BOOK_LAYOUT_LAND.rows = 6;
        BIBLE_BOOK_LAYOUT_LAND.cols = 11;
    }

    RowColLayout calculateLayout(List<ButtonInfo> buttonInfoList) {
        RowColLayout rowColLayout = new RowColLayout();
        int numButtons = buttonInfoList.size();

        // is it the list of bible books
        if (buttonInfoList.size() == 66 && !StringUtils.isNumeric(buttonInfoList.get(0).name)) {
            // bible books
            if (isPortrait()) {
                rowColLayout = BIBLE_BOOK_LAYOUT;
            } else {
                rowColLayout = BIBLE_BOOK_LAYOUT_LAND;
            }
        } else {
            // a list of chapters or verses
            if (numButtons <= 50) {
                if (isPortrait()) {
                    rowColLayout.rows = 10;
                } else {
                    rowColLayout.rows = 5;
                }
            } else if (numButtons <= 100) {
                rowColLayout.rows = 10;
            } else {
                if (isPortrait()) {
                    rowColLayout.rows = 15;
                } else {
                    rowColLayout.rows = 10;
                }
            }
            rowColLayout.cols = (int) Math.ceil(((float) numButtons) / rowColLayout.rows);

            // if there are too few buttons/rows you just see a couple of large buttons on the screen so ensure there are enough rows to look nice
            int minCols = isPortrait() ? MIN_COLS : MIN_COLS_LAND;
            rowColLayout.cols = Math.max(minCols, rowColLayout.cols);
        }

        rowColLayout.columnOrder = isPortrait();

        Log.d(TAG, "Rows:" + rowColLayout.rows + " Cols:" + rowColLayout.cols);
        return rowColLayout;
    }

    private boolean isPortrait() {
        return CommonUtils.isPortrait();
    }

    static class RowColLayout {
        int rows;
        int cols;

        /**
         * column order if portrait mode to provide longer 'runs'
         */
        boolean columnOrder;
    }
}