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- <pre class="prettyprint lang-js"><div id="cls-Ext.layout.AnchorLayout"></div>/**
- * @class Ext.layout.AnchorLayout
- * @extends Ext.layout.ContainerLayout
- * <p>This is a layout that enables anchoring of contained elements relative to the container's dimensions.
- * If the container is resized, all anchored items are automatically rerendered according to their
- * <b><tt>{@link #anchor}</tt></b> rules.</p>
- * <p>This class is intended to be extended or created via the layout:'anchor' {@link Ext.Container#layout}
- * config, and should generally not need to be created directly via the new keyword.</p>
- * <p>AnchorLayout does not have any direct config options (other than inherited ones). By default,
- * AnchorLayout will calculate anchor measurements based on the size of the container itself. However, the
- * container using the AnchorLayout can supply an anchoring-specific config property of <b>anchorSize</b>.
- * If anchorSize is specifed, the layout will use it as a virtual container for the purposes of calculating
- * anchor measurements based on it instead, allowing the container to be sized independently of the anchoring
- * logic if necessary. For example:</p>
- * <pre><code>
-var viewport = new Ext.Viewport({
- layout:'anchor',
- anchorSize: {width:800, height:600},
- items:[{
- title:'Item 1',
- html:'Content 1',
- width:800,
- anchor:'right 20%'
- },{
- title:'Item 2',
- html:'Content 2',
- width:300,
- anchor:'50% 30%'
- },{
- title:'Item 3',
- html:'Content 3',
- width:600,
- anchor:'-100 50%'
- }]
-});
- * </code></pre>
- */
-Ext.layout.AnchorLayout = Ext.extend(Ext.layout.ContainerLayout, {
- <div id="cfg-Ext.layout.AnchorLayout-anchor"></div>/**
- * @cfg {String} anchor
- * <p>This configuation option is to be applied to <b>child <tt>items</tt></b> of a container managed by
- * this layout (ie. configured with <tt>layout:'anchor'</tt>).</p><br/>
- *
- * <p>This value is what tells the layout how an item should be anchored to the container. <tt>items</tt>
- * added to an AnchorLayout accept an anchoring-specific config property of <b>anchor</b> which is a string
- * containing two values: the horizontal anchor value and the vertical anchor value (for example, '100% 50%').
- * The following types of anchor values are supported:<div class="mdetail-params"><ul>
- *
- * <li><b>Percentage</b> : Any value between 1 and 100, expressed as a percentage.<div class="sub-desc">
- * The first anchor is the percentage width that the item should take up within the container, and the
- * second is the percentage height. For example:<pre><code>
-// two values specified
-anchor: '100% 50%' // render item complete width of the container and
- // 1/2 height of the container
-// one value specified
-anchor: '100%' // the width value; the height will default to auto
- * </code></pre></div></li>
- *
- * <li><b>Offsets</b> : Any positive or negative integer value.<div class="sub-desc">
- * This is a raw adjustment where the first anchor is the offset from the right edge of the container,
- * and the second is the offset from the bottom edge. For example:<pre><code>
-// two values specified
-anchor: '-50 -100' // render item the complete width of the container
- // minus 50 pixels and
- // the complete height minus 100 pixels.
-// one value specified
-anchor: '-50' // anchor value is assumed to be the right offset value
- // bottom offset will default to 0
- * </code></pre></div></li>
- *
- * <li><b>Sides</b> : Valid values are <tt>'right'</tt> (or <tt>'r'</tt>) and <tt>'bottom'</tt>
- * (or <tt>'b'</tt>).<div class="sub-desc">
- * Either the container must have a fixed size or an anchorSize config value defined at render time in
- * order for these to have any effect.</div></li>
- *
- * <li><b>Mixed</b> : <div class="sub-desc">
- * Anchor values can also be mixed as needed. For example, to render the width offset from the container
- * right edge by 50 pixels and 75% of the container's height use:
- * <pre><code>
-anchor: '-50 75%'
- * </code></pre></div></li>
- *
- *
- * </ul></div>
- */
-
- // private
- monitorResize:true,
-
- // private
- // deprecate
- getAnchorViewSize : function(ct, target){
- return target.dom == document.body ?
- target.getViewSize(true) : target.getStyleSize();
- },
-
- // private
- onLayout : function(ct, target){
- Ext.layout.AnchorLayout.superclass.onLayout.call(this, ct, target);
-
- var size = target.getViewSize(true);
-
- var w = size.width, h = size.height;
-
- if(w < 20 && h < 20){
- return;
- }
-
- // find the container anchoring size
- var aw, ah;
- if(ct.anchorSize){
- if(typeof ct.anchorSize == 'number'){
- aw = ct.anchorSize;
- }else{
- aw = ct.anchorSize.width;
- ah = ct.anchorSize.height;
- }
- }else{
- aw = ct.initialConfig.width;
- ah = ct.initialConfig.height;
- }
-
- var cs = ct.items.items, len = cs.length, i, c, a, cw, ch, el, vs;
- for(i = 0; i < len; i++){
- c = cs[i];
- el = c.getPositionEl();
- if(c.anchor){
- a = c.anchorSpec;
- if(!a){ // cache all anchor values
- vs = c.anchor.split(' ');
- c.anchorSpec = a = {
- right: this.parseAnchor(vs[0], c.initialConfig.width, aw),
- bottom: this.parseAnchor(vs[1], c.initialConfig.height, ah)
- };
- }
- cw = a.right ? this.adjustWidthAnchor(a.right(w) - el.getMargins('lr'), c) : undefined;
- ch = a.bottom ? this.adjustHeightAnchor(a.bottom(h) - el.getMargins('tb'), c) : undefined;
-
- if(cw || ch){
- c.setSize(cw || undefined, ch || undefined);
- }
- }
- }
- },
-
- // private
- parseAnchor : function(a, start, cstart){
- if(a && a != 'none'){
- var last;
- if(/^(r|right|b|bottom)$/i.test(a)){ // standard anchor
- var diff = cstart - start;
- return function(v){
- if(v !== last){
- last = v;
- return v - diff;
- }
- }
- }else if(a.indexOf('%') != -1){
- var ratio = parseFloat(a.replace('%', ''))*.01; // percentage
- return function(v){
- if(v !== last){
- last = v;
- return Math.floor(v*ratio);
- }
- }
- }else{
- a = parseInt(a, 10);
- if(!isNaN(a)){ // simple offset adjustment
- return function(v){
- if(v !== last){
- last = v;
- return v + a;
- }
- }
- }
- }
- }
- return false;
- },
-
- // private
- adjustWidthAnchor : function(value, comp){
- return value;
- },
-
- // private
- adjustHeightAnchor : function(value, comp){
- return value;
- }
-
- <div id="prop-Ext.layout.AnchorLayout-activeItem"></div>/**
- * @property activeItem
- * @hide
- */
-});
-Ext.Container.LAYOUTS['anchor'] = Ext.layout.AnchorLayout;
-</pre> \r
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