X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/6e39d509471fe9b4e2660e0d1631b350d0c66f40..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/docs/source/Element.alignment.html diff --git a/docs/source/Element.alignment.html b/docs/source/Element.alignment.html index 0f5cd895..8e4a9d52 100644 --- a/docs/source/Element.alignment.html +++ b/docs/source/Element.alignment.html @@ -1,416 +1 @@ - - - - The source code - - - - -
/**
- * @class Ext.Element
- */
-Ext.Element.addMethods({
-    
/** - * Gets the x,y coordinates specified by the anchor position on the element. - * @param {String} anchor (optional) The specified anchor position (defaults to "c"). See {@link #alignTo} - * for details on supported anchor positions. - * @param {Boolean} local (optional) True to get the local (element top/left-relative) anchor position instead - * of page coordinates - * @param {Object} size (optional) An object containing the size to use for calculating anchor position - * {width: (target width), height: (target height)} (defaults to the element's current size) - * @return {Array} [x, y] An array containing the element's x and y coordinates - */ - getAnchorXY : function(anchor, local, s){ - //Passing a different size is useful for pre-calculating anchors, - //especially for anchored animations that change the el size. - anchor = (anchor || "tl").toLowerCase(); - s = s || {}; - - var me = this, - vp = me.dom == document.body || me.dom == document, - w = s.width || vp ? Ext.lib.Dom.getViewWidth() : me.getWidth(), - h = s.height || vp ? Ext.lib.Dom.getViewHeight() : me.getHeight(), - xy, - r = Math.round, - o = me.getXY(), - scroll = me.getScroll(), - extraX = vp ? scroll.left : !local ? o[0] : 0, - extraY = vp ? scroll.top : !local ? o[1] : 0, - hash = { - c : [r(w * 0.5), r(h * 0.5)], - t : [r(w * 0.5), 0], - l : [0, r(h * 0.5)], - r : [w, r(h * 0.5)], - b : [r(w * 0.5), h], - tl : [0, 0], - bl : [0, h], - br : [w, h], - tr : [w, 0] - }; - - xy = hash[anchor]; - return [xy[0] + extraX, xy[1] + extraY]; - }, - -
/** - * Anchors an element to another element and realigns it when the window is resized. - * @param {Mixed} element The element to align to. - * @param {String} position The position to align to. - * @param {Array} offsets (optional) Offset the positioning by [x, y] - * @param {Boolean/Object} animate (optional) True for the default animation or a standard Element animation config object - * @param {Boolean/Number} monitorScroll (optional) True to monitor body scroll and reposition. If this parameter - * is a number, it is used as the buffer delay (defaults to 50ms). - * @param {Function} callback The function to call after the animation finishes - * @return {Ext.Element} this - */ - anchorTo : function(el, alignment, offsets, animate, monitorScroll, callback){ - var me = this, - dom = me.dom, - scroll = !Ext.isEmpty(monitorScroll), - action = function(){ - Ext.fly(dom).alignTo(el, alignment, offsets, animate); - Ext.callback(callback, Ext.fly(dom)); - }, - anchor = this.getAnchor(); - - // previous listener anchor, remove it - this.removeAnchor(); - Ext.apply(anchor, { - fn: action, - scroll: scroll - }); - - Ext.EventManager.onWindowResize(action, null); - - if(scroll){ - Ext.EventManager.on(window, 'scroll', action, null, - {buffer: !isNaN(monitorScroll) ? monitorScroll : 50}); - } - action.call(me); // align immediately - return me; - }, - -
/** - * Remove any anchor to this element. See {@link #anchorTo}. - * @return {Ext.Element} this - */ - removeAnchor : function(){ - var me = this, - anchor = this.getAnchor(); - - if(anchor && anchor.fn){ - Ext.EventManager.removeResizeListener(anchor.fn); - if(anchor.scroll){ - Ext.EventManager.un(window, 'scroll', anchor.fn); - } - delete anchor.fn; - } - return me; - }, - - // private - getAnchor : function(){ - var data = Ext.Element.data, - dom = this.dom; - if (!dom) { - return; - } - var anchor = data(dom, '_anchor'); - - if(!anchor){ - anchor = data(dom, '_anchor', {}); - } - return anchor; - }, - -
/** - * Gets the x,y coordinates to align this element with another element. See {@link #alignTo} for more info on the - * supported position values. - * @param {Mixed} element The element to align to. - * @param {String} position (optional, defaults to "tl-bl?") The position to align to. - * @param {Array} offsets (optional) Offset the positioning by [x, y] - * @return {Array} [x, y] - */ - getAlignToXY : function(el, p, o){ - el = Ext.get(el); - - if(!el || !el.dom){ - throw "Element.alignToXY with an element that doesn't exist"; - } - - o = o || [0,0]; - p = (!p || p == "?" ? "tl-bl?" : (!/-/.test(p) && p !== "" ? "tl-" + p : p || "tl-bl")).toLowerCase(); - - var me = this, - d = me.dom, - a1, - a2, - x, - y, - //constrain the aligned el to viewport if necessary - w, - h, - r, - dw = Ext.lib.Dom.getViewWidth() -10, // 10px of margin for ie - dh = Ext.lib.Dom.getViewHeight()-10, // 10px of margin for ie - p1y, - p1x, - p2y, - p2x, - swapY, - swapX, - doc = document, - docElement = doc.documentElement, - docBody = doc.body, - scrollX = (docElement.scrollLeft || docBody.scrollLeft || 0)+5, - scrollY = (docElement.scrollTop || docBody.scrollTop || 0)+5, - c = false, //constrain to viewport - p1 = "", - p2 = "", - m = p.match(/^([a-z]+)-([a-z]+)(\?)?$/); - - if(!m){ - throw "Element.alignTo with an invalid alignment " + p; - } - - p1 = m[1]; - p2 = m[2]; - c = !!m[3]; - - //Subtract the aligned el's internal xy from the target's offset xy - //plus custom offset to get the aligned el's new offset xy - a1 = me.getAnchorXY(p1, true); - a2 = el.getAnchorXY(p2, false); - - x = a2[0] - a1[0] + o[0]; - y = a2[1] - a1[1] + o[1]; - - if(c){ - w = me.getWidth(); - h = me.getHeight(); - r = el.getRegion(); - //If we are at a viewport boundary and the aligned el is anchored on a target border that is - //perpendicular to the vp border, allow the aligned el to slide on that border, - //otherwise swap the aligned el to the opposite border of the target. - p1y = p1.charAt(0); - p1x = p1.charAt(p1.length-1); - p2y = p2.charAt(0); - p2x = p2.charAt(p2.length-1); - swapY = ((p1y=="t" && p2y=="b") || (p1y=="b" && p2y=="t")); - swapX = ((p1x=="r" && p2x=="l") || (p1x=="l" && p2x=="r")); - - - if (x + w > dw + scrollX) { - x = swapX ? r.left-w : dw+scrollX-w; - } - if (x < scrollX) { - x = swapX ? r.right : scrollX; - } - if (y + h > dh + scrollY) { - y = swapY ? r.top-h : dh+scrollY-h; - } - if (y < scrollY){ - y = swapY ? r.bottom : scrollY; - } - } - return [x,y]; - }, - -
/** - * Aligns this element with another element relative to the specified anchor points. If the other element is the - * document it aligns it to the viewport. - * The position parameter is optional, and can be specified in any one of the following formats: - * - * In addition to the anchor points, the position parameter also supports the "?" character. If "?" is passed at the end of - * the position string, the element will attempt to align as specified, but the position will be adjusted to constrain to - * the viewport if necessary. Note that the element being aligned might be swapped to align to a different position than - * that specified in order to enforce the viewport constraints. - * Following are all of the supported anchor positions: -
-Value  Description
------  -----------------------------
-tl     The top left corner (default)
-t      The center of the top edge
-tr     The top right corner
-l      The center of the left edge
-c      In the center of the element
-r      The center of the right edge
-bl     The bottom left corner
-b      The center of the bottom edge
-br     The bottom right corner
-
-Example Usage: -

-// align el to other-el using the default positioning ("tl-bl", non-constrained)
-el.alignTo("other-el");
-
-// align the top left corner of el with the top right corner of other-el (constrained to viewport)
-el.alignTo("other-el", "tr?");
-
-// align the bottom right corner of el with the center left edge of other-el
-el.alignTo("other-el", "br-l?");
-
-// align the center of el with the bottom left corner of other-el and
-// adjust the x position by -6 pixels (and the y position by 0)
-el.alignTo("other-el", "c-bl", [-6, 0]);
-
- * @param {Mixed} element The element to align to. - * @param {String} position (optional, defaults to "tl-bl?") The position to align to. - * @param {Array} offsets (optional) Offset the positioning by [x, y] - * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object - * @return {Ext.Element} this - */ - alignTo : function(element, position, offsets, animate){ - var me = this; - return me.setXY(me.getAlignToXY(element, position, offsets), - me.preanim && !!animate ? me.preanim(arguments, 3) : false); - }, - - // private ==> used outside of core - adjustForConstraints : function(xy, parent, offsets){ - return this.getConstrainToXY(parent || document, false, offsets, xy) || xy; - }, - - // private ==> used outside of core - getConstrainToXY : function(el, local, offsets, proposedXY){ - var os = {top:0, left:0, bottom:0, right: 0}; - - return function(el, local, offsets, proposedXY){ - el = Ext.get(el); - offsets = offsets ? Ext.applyIf(offsets, os) : os; - - var vw, vh, vx = 0, vy = 0; - if(el.dom == document.body || el.dom == document){ - vw =Ext.lib.Dom.getViewWidth(); - vh = Ext.lib.Dom.getViewHeight(); - }else{ - vw = el.dom.clientWidth; - vh = el.dom.clientHeight; - if(!local){ - var vxy = el.getXY(); - vx = vxy[0]; - vy = vxy[1]; - } - } - - var s = el.getScroll(); - - vx += offsets.left + s.left; - vy += offsets.top + s.top; - - vw -= offsets.right; - vh -= offsets.bottom; - - var vr = vx+vw; - var vb = vy+vh; - - var xy = proposedXY || (!local ? this.getXY() : [this.getLeft(true), this.getTop(true)]); - var x = xy[0], y = xy[1]; - var w = this.dom.offsetWidth, h = this.dom.offsetHeight; - - // only move it if it needs it - var moved = false; - - // first validate right/bottom - if((x + w) > vr){ - x = vr - w; - moved = true; - } - if((y + h) > vb){ - y = vb - h; - moved = true; - } - // then make sure top/left isn't negative - if(x < vx){ - x = vx; - moved = true; - } - if(y < vy){ - y = vy; - moved = true; - } - return moved ? [x, y] : false; - }; - }(), - - - -// el = Ext.get(el); -// offsets = Ext.applyIf(offsets || {}, {top : 0, left : 0, bottom : 0, right : 0}); - -// var me = this, -// doc = document, -// s = el.getScroll(), -// vxy = el.getXY(), -// vx = offsets.left + s.left, -// vy = offsets.top + s.top, -// vw = -offsets.right, -// vh = -offsets.bottom, -// vr, -// vb, -// xy = proposedXY || (!local ? me.getXY() : [me.getLeft(true), me.getTop(true)]), -// x = xy[0], -// y = xy[1], -// w = me.dom.offsetWidth, h = me.dom.offsetHeight, -// moved = false; // only move it if it needs it -// -// -// if(el.dom == doc.body || el.dom == doc){ -// vw += Ext.lib.Dom.getViewWidth(); -// vh += Ext.lib.Dom.getViewHeight(); -// }else{ -// vw += el.dom.clientWidth; -// vh += el.dom.clientHeight; -// if(!local){ -// vx += vxy[0]; -// vy += vxy[1]; -// } -// } - -// // first validate right/bottom -// if(x + w > vx + vw){ -// x = vx + vw - w; -// moved = true; -// } -// if(y + h > vy + vh){ -// y = vy + vh - h; -// moved = true; -// } -// // then make sure top/left isn't negative -// if(x < vx){ -// x = vx; -// moved = true; -// } -// if(y < vy){ -// y = vy; -// moved = true; -// } -// return moved ? [x, y] : false; -// }, - -
/** - * Calculates the x, y to center this element on the screen - * @return {Array} The x, y values [x, y] - */ - getCenterXY : function(){ - return this.getAlignToXY(document, 'c-c'); - }, - -
/** - * Centers the Element in either the viewport, or another Element. - * @param {Mixed} centerIn (optional) The element in which to center the element. - */ - center : function(centerIn){ - return this.alignTo(centerIn || document, 'c-c'); - } -}); -
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