4 * Copyright(c) 2006-2007, Ext JS, LLC.
6 * Originally Released Under LGPL - original licence link has changed is not relivant.
9 * <script type="text/javascript">
13 * @class Roo.Resizable
14 * @extends Roo.util.Observable
15 * <p>Applies drag handles to an element to make it resizable. The drag handles are inserted into the element
16 * and positioned absolute. Some elements, such as a textarea or image, don't support this. To overcome that, you can wrap
17 * the textarea in a div and set "resizeChild" to true (or to the id of the element), <b>or</b> set wrap:true in your config and
18 * the element will be wrapped for you automatically.</p>
19 * <p>Here is the list of valid resize handles:</p>
22 ------ -------------------
34 * <p>Here's an example showing the creation of a typical Resizable:</p>
36 var resizer = new Roo.Resizable("element-id", {
44 resizer.on("resize", myHandler);
46 * <p>To hide a particular handle, set its display to none in CSS, or through script:<br>
47 * resizer.east.setDisplayed(false);</p>
48 * @cfg {Boolean/String/Element} resizeChild True to resize the first child, or id/element to resize (defaults to false)
49 * @cfg {Array/String} adjustments String "auto" or an array [width, height] with values to be <b>added</b> to the
50 * resize operation's new size (defaults to [0, 0])
51 * @cfg {Number} minWidth The minimum width for the element (defaults to 5)
52 * @cfg {Number} minHeight The minimum height for the element (defaults to 5)
53 * @cfg {Number} maxWidth The maximum width for the element (defaults to 10000)
54 * @cfg {Number} maxHeight The maximum height for the element (defaults to 10000)
55 * @cfg {Boolean} enabled False to disable resizing (defaults to true)
56 * @cfg {Boolean} wrap True to wrap an element with a div if needed (required for textareas and images, defaults to false)
57 * @cfg {Number} width The width of the element in pixels (defaults to null)
58 * @cfg {Number} height The height of the element in pixels (defaults to null)
59 * @cfg {Boolean} animate True to animate the resize (not compatible with dynamic sizing, defaults to false)
60 * @cfg {Number} duration Animation duration if animate = true (defaults to .35)
61 * @cfg {Boolean} dynamic True to resize the element while dragging instead of using a proxy (defaults to false)
62 * @cfg {String} handles String consisting of the resize handles to display (defaults to undefined)
63 * @cfg {Boolean} multiDirectional <b>Deprecated</b>. The old style of adding multi-direction resize handles, deprecated
64 * in favor of the handles config option (defaults to false)
65 * @cfg {Boolean} disableTrackOver True to disable mouse tracking. This is only applied at config time. (defaults to false)
66 * @cfg {String} easing Animation easing if animate = true (defaults to 'easingOutStrong')
67 * @cfg {Number} widthIncrement The increment to snap the width resize in pixels (dynamic must be true, defaults to 0)
68 * @cfg {Number} heightIncrement The increment to snap the height resize in pixels (dynamic must be true, defaults to 0)
69 * @cfg {Boolean} pinned True to ensure that the resize handles are always visible, false to display them only when the
70 * user mouses over the resizable borders. This is only applied at config time. (defaults to false)
71 * @cfg {Boolean} preserveRatio True to preserve the original ratio between height and width during resize (defaults to false)
72 * @cfg {Boolean} transparent True for transparent handles. This is only applied at config time. (defaults to false)
73 * @cfg {Number} minX The minimum allowed page X for the element (only used for west resizing, defaults to 0)
74 * @cfg {Number} minY The minimum allowed page Y for the element (only used for north resizing, defaults to 0)
75 * @cfg {Boolean} draggable Convenience to initialize drag drop (defaults to false)
77 * Create a new resizable component
78 * @param {String/HTMLElement/Roo.Element} el The id or element to resize
79 * @param {Object} config configuration options
81 Roo.Resizable = function(el, config)
83 this.el = Roo.get(el);
85 if(config && config.wrap){
86 config.resizeChild = this.el;
87 this.el = this.el.wrap(typeof config.wrap == "object" ? config.wrap : {cls:"xresizable-wrap"});
88 this.el.id = this.el.dom.id = config.resizeChild.id + "-rzwrap";
89 this.el.setStyle("overflow", "hidden");
90 this.el.setPositioning(config.resizeChild.getPositioning());
91 config.resizeChild.clearPositioning();
92 if(!config.width || !config.height){
93 var csize = config.resizeChild.getSize();
94 this.el.setSize(csize.width, csize.height);
96 if(config.pinned && !config.adjustments){
97 config.adjustments = "auto";
101 this.proxy = this.el.createProxy({tag: "div", cls: "x-resizable-proxy", id: this.el.id + "-rzproxy"});
102 this.proxy.unselectable();
103 this.proxy.enableDisplayMode('block');
105 Roo.apply(this, config);
108 this.disableTrackOver = true;
109 this.el.addClass("x-resizable-pinned");
111 // if the element isn't positioned, make it relative
112 var position = this.el.getStyle("position");
113 if(position != "absolute" && position != "fixed"){
114 this.el.setStyle("position", "relative");
116 if(!this.handles){ // no handles passed, must be legacy style
117 this.handles = 's,e,se';
118 if(this.multiDirectional){
119 this.handles += ',n,w';
122 if(this.handles == "all"){
123 this.handles = "n s e w ne nw se sw";
125 var hs = this.handles.split(/\s*?[,;]\s*?| /);
126 var ps = Roo.Resizable.positions;
127 for(var i = 0, len = hs.length; i < len; i++){
128 if(hs[i] && ps[hs[i]]){
130 this[pos] = new Roo.Resizable.Handle(this, pos, this.disableTrackOver, this.transparent);
134 this.corner = this.southeast;
136 // updateBox = the box can move..
137 if(this.handles.indexOf("n") != -1 || this.handles.indexOf("w") != -1 || this.handles.indexOf("hd") != -1) {
138 this.updateBox = true;
141 this.activeHandle = null;
143 if(this.resizeChild){
144 if(typeof this.resizeChild == "boolean"){
145 this.resizeChild = Roo.get(this.el.dom.firstChild, true);
147 this.resizeChild = Roo.get(this.resizeChild, true);
151 if(this.adjustments == "auto"){
152 var rc = this.resizeChild;
153 var hw = this.west, he = this.east, hn = this.north, hs = this.south;
154 if(rc && (hw || hn)){
155 rc.position("relative");
156 rc.setLeft(hw ? hw.el.getWidth() : 0);
157 rc.setTop(hn ? hn.el.getHeight() : 0);
160 (he ? -he.el.getWidth() : 0) + (hw ? -hw.el.getWidth() : 0),
161 (hn ? -hn.el.getHeight() : 0) + (hs ? -hs.el.getHeight() : 0) -1
166 this.dd = this.dynamic ?
167 this.el.initDD(null) : this.el.initDDProxy(null, {dragElId: this.proxy.id});
168 this.dd.setHandleElId(this.resizeChild ? this.resizeChild.id : this.el.id);
174 * @event beforeresize
175 * Fired before resize is allowed. Set enabled to false to cancel resize.
176 * @param {Roo.Resizable} this
177 * @param {Roo.EventObject} e The mousedown event
179 "beforeresize" : true,
182 * Fired after a resize.
183 * @param {Roo.Resizable} this
184 * @param {Number} width The new width
185 * @param {Number} height The new height
186 * @param {Roo.EventObject} e The mouseup event
191 if(this.width !== null && this.height !== null){
192 this.resizeTo(this.width, this.height);
194 this.updateChildSize();
197 this.el.dom.style.zoom = 1;
199 Roo.Resizable.superclass.constructor.call(this);
202 Roo.extend(Roo.Resizable, Roo.util.Observable, {
204 adjustments : [0, 0],
214 multiDirectional : false,
215 disableTrackOver : false,
216 easing : 'easeOutStrong',
222 preserveRatio : false,
229 * @cfg {String/HTMLElement/Element} constrainTo Constrain the resize to a particular element
231 constrainTo: undefined,
233 * @cfg {Roo.lib.Region} resizeRegion Constrain the resize to a particular region
235 resizeRegion: undefined,
239 * Perform a manual resize
240 * @param {Number} width
241 * @param {Number} height
243 resizeTo : function(width, height){
244 this.el.setSize(width, height);
245 this.updateChildSize();
246 this.fireEvent("resize", this, width, height, null);
250 startSizing : function(e, handle){
251 this.fireEvent("beforeresize", this, e);
252 if(this.enabled){ // 2nd enabled check in case disabled before beforeresize handler
255 this.overlay = this.el.createProxy({tag: "div", cls: "x-resizable-overlay", html: " "});
256 this.overlay.unselectable();
257 this.overlay.enableDisplayMode("block");
258 this.overlay.on("mousemove", this.onMouseMove, this);
259 this.overlay.on("mouseup", this.onMouseUp, this);
261 this.overlay.setStyle("cursor", handle.el.getStyle("cursor"));
263 this.resizing = true;
264 this.startBox = this.el.getBox();
265 this.startPoint = e.getXY();
266 this.offsets = [(this.startBox.x + this.startBox.width) - this.startPoint[0],
267 (this.startBox.y + this.startBox.height) - this.startPoint[1]];
269 this.overlay.setSize(Roo.lib.Dom.getViewWidth(true), Roo.lib.Dom.getViewHeight(true));
272 if(this.constrainTo) {
273 var ct = Roo.get(this.constrainTo);
274 this.resizeRegion = ct.getRegion().adjust(
275 ct.getFrameWidth('t'),
276 ct.getFrameWidth('l'),
277 -ct.getFrameWidth('b'),
278 -ct.getFrameWidth('r')
282 this.proxy.setStyle('visibility', 'hidden'); // workaround display none
284 this.proxy.setBox(this.startBox);
286 this.proxy.setStyle('visibility', 'visible');
292 onMouseDown : function(handle, e){
295 this.activeHandle = handle;
296 this.startSizing(e, handle);
301 onMouseUp : function(e){
302 var size = this.resizeElement();
303 this.resizing = false;
307 this.fireEvent("resize", this, size.width, size.height, e);
311 updateChildSize : function(){
312 if(this.resizeChild){
314 var child = this.resizeChild;
315 var adj = this.adjustments;
316 if(el.dom.offsetWidth){
317 var b = el.getSize(true);
318 child.setSize(b.width+adj[0], b.height+adj[1]);
320 // Second call here for IE
321 // The first call enables instant resizing and
322 // the second call corrects scroll bars if they
325 setTimeout(function(){
326 if(el.dom.offsetWidth){
327 var b = el.getSize(true);
328 child.setSize(b.width+adj[0], b.height+adj[1]);
336 snap : function(value, inc, min){
337 if(!inc || !value) return value;
338 var newValue = value;
342 newValue = value + (inc-m);
344 newValue = value - m;
347 return Math.max(min, newValue);
351 resizeElement : function(){
352 var box = this.proxy.getBox();
354 this.el.setBox(box, false, this.animate, this.duration, null, this.easing);
356 this.el.setSize(box.width, box.height, this.animate, this.duration, null, this.easing);
358 this.updateChildSize();
366 constrain : function(v, diff, m, mx){
369 }else if(v - diff > mx){
376 onMouseMove : function(e){
378 try{// try catch so if something goes wrong the user doesn't get hung
380 if(this.resizeRegion && !this.resizeRegion.contains(e.getPoint())) {
384 //var curXY = this.startPoint;
385 var curSize = this.curSize || this.startBox;
386 var x = this.startBox.x, y = this.startBox.y;
388 var w = curSize.width, h = curSize.height;
390 var mw = this.minWidth, mh = this.minHeight;
391 var mxw = this.maxWidth, mxh = this.maxHeight;
392 var wi = this.widthIncrement;
393 var hi = this.heightIncrement;
395 var eventXY = e.getXY();
396 var diffX = -(this.startPoint[0] - Math.max(this.minX, eventXY[0]));
397 var diffY = -(this.startPoint[1] - Math.max(this.minY, eventXY[1]));
399 var pos = this.activeHandle.position;
404 w = Math.min(Math.max(mw, w), mxw);
409 h = Math.min(Math.max(mh, h), mxh);
414 w = Math.min(Math.max(mw, w), mxw);
415 h = Math.min(Math.max(mh, h), mxh);
418 diffY = this.constrain(h, diffY, mh, mxh);
425 var adiffX = Math.abs(diffX);
426 var sub = (adiffX % wi); // how much
427 if (sub > (wi/2)) { // far enough to snap
428 diffX = (diffX > 0) ? diffX-sub + wi : diffX+sub - wi;
430 // remove difference..
431 diffX = (diffX > 0) ? diffX-sub : diffX+sub;
435 x = Math.max(this.minX, x);
438 diffX = this.constrain(w, diffX, mw, mxw);
444 w = Math.min(Math.max(mw, w), mxw);
445 diffY = this.constrain(h, diffY, mh, mxh);
450 diffX = this.constrain(w, diffX, mw, mxw);
451 diffY = this.constrain(h, diffY, mh, mxh);
458 diffX = this.constrain(w, diffX, mw, mxw);
460 h = Math.min(Math.max(mh, h), mxh);
466 var sw = this.snap(w, wi, mw);
467 var sh = this.snap(h, hi, mh);
468 if(sw != w || sh != h){
491 if(this.preserveRatio){
496 h = Math.min(Math.max(mh, h), mxh);
501 w = Math.min(Math.max(mw, w), mxw);
506 w = Math.min(Math.max(mw, w), mxw);
512 w = Math.min(Math.max(mw, w), mxw);
518 h = Math.min(Math.max(mh, h), mxh);
526 h = Math.min(Math.max(mh, h), mxh);
536 h = Math.min(Math.max(mh, h), mxh);
544 if (pos == 'hdrag') {
547 this.proxy.setBounds(x, y, w, h);
549 this.resizeElement();
556 handleOver : function(){
558 this.el.addClass("x-resizable-over");
563 handleOut : function(){
565 this.el.removeClass("x-resizable-over");
570 * Returns the element this component is bound to.
571 * @return {Roo.Element}
578 * Returns the resizeChild element (or null).
579 * @return {Roo.Element}
581 getResizeChild : function(){
582 return this.resizeChild;
586 * Destroys this resizable. If the element was wrapped and
587 * removeEl is not true then the element remains.
588 * @param {Boolean} removeEl (optional) true to remove the element from the DOM
590 destroy : function(removeEl){
593 this.overlay.removeAllListeners();
594 this.overlay.remove();
596 var ps = Roo.Resizable.positions;
598 if(typeof ps[k] != "function" && this[ps[k]]){
600 h.el.removeAllListeners();
612 // hash to map config positions to true positions
613 Roo.Resizable.positions = {
614 n: "north", s: "south", e: "east", w: "west", se: "southeast", sw: "southwest", nw: "northwest", ne: "northeast",
619 Roo.Resizable.Handle = function(rz, pos, disableTrackOver, transparent){
621 // only initialize the template if resizable is used
622 var tpl = Roo.DomHelper.createTemplate(
623 {tag: "div", cls: "x-resizable-handle x-resizable-handle-{0}"}
626 Roo.Resizable.Handle.prototype.tpl = tpl;
630 // show north drag fro topdra
631 var handlepos = pos == 'hdrag' ? 'north' : pos;
633 this.el = this.tpl.append(rz.el.dom, [handlepos], true);
634 if (pos == 'hdrag') {
635 this.el.setStyle('cursor', 'pointer');
637 this.el.unselectable();
639 this.el.setOpacity(0);
641 this.el.on("mousedown", this.onMouseDown, this);
642 if(!disableTrackOver){
643 this.el.on("mouseover", this.onMouseOver, this);
644 this.el.on("mouseout", this.onMouseOut, this);
649 Roo.Resizable.Handle.prototype = {
650 afterResize : function(rz){
654 onMouseDown : function(e){
655 this.rz.onMouseDown(this, e);
658 onMouseOver : function(e){
659 this.rz.handleOver(this, e);
662 onMouseOut : function(e){
663 this.rz.handleOut(this, e);