mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-08-26 12:36:07 +02:00
109 lines
2.8 KiB
JavaScript
109 lines
2.8 KiB
JavaScript
/**
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* @preserve jLayout Flex Grid Layout - JavaScript Layout Algorithms v0.4
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* Based on: http://www.javaworld.com/javaworld/javatips/jw-javatip121.html
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*
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* Licensed under the new BSD License.
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* Copyright 2008-2009, Bram Stein
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* All rights reserved.
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*/
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/*global jLayout:true */
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(function () {
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jLayout = (typeof jLayout === 'undefined') ? {} : jLayout;
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// The flex grid has a dependency on the grid layout, so please make
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// sure you include the grid layout manager before the flex grid
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// layout manager.
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if (typeof jLayout.grid !== 'undefined') {
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jLayout.flexGrid = function (spec) {
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var my = {},
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that = this.grid(spec, my);
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function zeroArray(a, l) {
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var i = 0;
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for (; i < l; i += 1) {
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a[i] = 0;
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}
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return a;
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}
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function typeLayout(type) {
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return function (container) {
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var i = 0, r = 0, c = 0, nw = 0, nh = 0,
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w = zeroArray([], my.columns),
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h = zeroArray([], my.rows),
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type_size,
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insets = container.insets();
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for (i = 0; i < my.items.length; i += 1) {
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r = Math.floor(i / my.columns);
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c = i % my.columns;
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type_size = my.items[i][type + 'Size']();
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if (w[c] < type_size.width) {
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w[c] = type_size.width;
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}
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if (h[r] < type_size.height) {
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h[r] = type_size.height;
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}
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}
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for (i = 0; i < my.columns; i += 1) {
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nw += w[i];
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}
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for (i = 0; i < my.rows; i += 1) {
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nh += h[i];
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}
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return {
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width: insets.left + insets.right + nw + (my.columns - 1) * my.hgap,
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height: insets.top + insets.bottom + nh + (my.rows - 1) * my.vgap
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};
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};
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}
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that.preferred = typeLayout('preferred');
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that.minimum = typeLayout('minimum');
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that.maximum = typeLayout('maximum');
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that.layout = function (container) {
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var i = 0, c = 0, r = 0,
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pd = that.preferred(container),
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sw = container.bounds().width / pd.width,
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sh = container.bounds().height / pd.height,
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w = zeroArray([], my.columns),
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h = zeroArray([], my.rows),
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insets = container.insets(),
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x = insets.left,
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y = insets.top,
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d;
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for (i = 0; i < my.items.length; i += 1) {
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r = Math.floor(i / my.columns);
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c = i % my.columns;
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d = my.items[i].preferredSize();
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d.width = sw * d.width;
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d.height = sh * d.height;
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if (w[c] < d.width) {
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w[c] = d.width;
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}
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if (h[r] < d.height) {
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h[r] = d.height;
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}
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}
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for (c = 0; c < my.columns; c += 1) {
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for (r = 0, y = insets.top; r < my.rows; r += 1) {
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i = r * my.columns + c;
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if (i < my.items.length) {
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my.items[i].bounds({'x': x, 'y': y, 'width': w[c], 'height': h[r]});
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my.items[i].doLayout();
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}
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y += h[r] + my.vgap;
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}
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x += w[c] + my.hgap;
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}
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return container;
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};
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return that;
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};
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}
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}());
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