Dave Hoover
bc7fd397fb
git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@1034 ed5b42cb-e716-0410-a449-f6a68f950b19
123 lines
4.0 KiB
ActionScript
123 lines
4.0 KiB
ActionScript
//
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// $Id$
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//
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// Nenya library - tools for developing networked games
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// Copyright (C) 2002-2010 Three Rings Design, Inc., All Rights Reserved
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// http://code.google.com/p/nenya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.flex {
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import flash.geom.Point;
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import flash.geom.Rectangle;
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import mx.core.UIComponent;
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import com.threerings.display.DisplayUtil;
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/**
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* Flex popup utilities.
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*/
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public class PopUpUtil
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{
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/**
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* Center the popup inside the stage, to which it should already be added.
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*/
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public static function center (popup :UIComponent) :void
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{
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centerInRect(popup, createStageRect(popup));
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}
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/**
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* Center the popup within the specified rectangle.
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*/
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public static function centerInRect (popup :UIComponent, rect :Rectangle) :void
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{
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var p :Point = DisplayUtil.centerRectInRect(new Rectangle(0, 0,
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popup.getExplicitOrMeasuredWidth(), popup.getExplicitOrMeasuredHeight()), rect);
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popup.x = p.x;
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popup.y = p.y;
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}
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/**
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* Fit the popup inside the stage.
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*/
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public static function fit (popup :UIComponent) :void
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{
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fitInRect(popup, createStageRect(popup));
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}
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/**
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* Fit the popup inside the specified rectangle.
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*/
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public static function fitInRect (popup :UIComponent, rect :Rectangle) :void
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{
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var p :Point = DisplayUtil.fitRectInRect(createPopupRect(popup), rect);
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popup.x = p.x;
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popup.y = p.y;
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}
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/**
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* Try to fit inside the specified rectangle, also avoiding other popups.
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*
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* @param popup the popup we'll try to move.
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* @param bounds the boundary within which to place the popup.
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* @param padding extra padding to place between popups (but not around the inside of
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* the bounds, do that yourself if you want it).
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*/
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public static function avoidOtherPopups (
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popup :UIComponent, bounds :Rectangle, padding :int = 0) :void
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{
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var avoid :Array = [];
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var r :Rectangle;
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// find the other popups we need to avoid
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for (var ii :int = popup.parent.numChildren - 1; ii >= 0; ii--) {
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var comp :UIComponent = popup.parent.getChildAt(ii) as UIComponent;
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if (comp != null && comp.isPopUp && comp.visible && comp != popup) {
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r = createPopupRect(comp);
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r.inflate(padding, padding);
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avoid.push(r);
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}
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}
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r = createPopupRect(popup);
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// put the rectangle in-bounds, so that even if avoiding the others fails, we're
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// at least in-bounds when fitRectInRect resets to the original position.
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var p :Point = DisplayUtil.fitRectInRect(r, bounds);
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r.x = p.x;
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r.y = p.y; // assigning to topLeft adjusts width/height too, so don't do it!
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DisplayUtil.positionRect(r, bounds, avoid);
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popup.x = r.x;
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popup.y = r.y;
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}
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/**
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* Wee utility method.
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*/
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protected static function createStageRect (popup :UIComponent) :Rectangle
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{
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return new Rectangle(0, 0, popup.stage.stageWidth, popup.stage.stageHeight);
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}
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protected static function createPopupRect (popup :UIComponent) :Rectangle
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{
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return new Rectangle(popup.x, popup.y,
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popup.getExplicitOrMeasuredWidth(), popup.getExplicitOrMeasuredHeight());
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}
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}
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}
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