這裏是我的問題:FLEX3,點擊和事件捕捉,特殊情況
我有一個主畫布「黑板」的面板, 這種帆布有本身的幾個孩子的,就像一個工具欄(牌),標籤和一些皮膚。
問題是,當我移動到矩形工具,我開始繪製矩形,如果我想改變工具,當我點擊其他工具,如'圓'或'選擇'按鈕不會趕上點擊事件,畫布將抓住鼠標並開始繪畫。
就像在picture.So我無法改變工具,一旦我開始繪畫。
alt text http://www.freeimagehosting.net/uploads/397a7cd49e.png
我怎麼能不使畫布反應過來的時候它是一個工具,或者我怎麼能讓按鈕第一趕上點擊並告訴畫布沒有做畫什麼。
當然,我可以把工具欄放在畫布上的其他地方,但是因爲空間很重要,所以我希望按鈕放在畫布上。
我願意接受任何建議。
===下面是一些代碼,以顯示它如何工作內部。 ===
<?xml version="1.0" encoding="utf-8"?>
<mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns:degrafa="http://www.degrafa.com/2007"
xmlns:comp="org.foo.bar.view.components.*"
layout="absolute"
title="Tableau">
<mx:Script>
<![CDATA[
import org.edorado.edoboard.ApplicationFacade;
]]>
</mx:Script>
<mx:Canvas id="blackBoard">
<degrafa:Surface id="boardSurfaceContainer">
skinning
</degrafa:Surface>
<!-- Tool bar -->
<comp:ToolbarView
id = "toolbar"
name = "toolbar"
verticalScrollPolicy="off"
horizontalScrollPolicy="off"
bottom="5"
right="5"
top="5"
direction="vertical"
width="30" />
<mx:Label x="10" y="10" text="Label" color="#FFFFFF" id="lbl"/>
</mx:Canvas>
</mx:Panel>
工具欄是包含在瓷磚中的按鈕列表。 畫布「黑板」與多個事件處理相關聯,特別是鼠標向上和移動以繪製形狀。
...
boardCanvas.addEventListener(MouseEvent.MOUSE_DOWN, handleMouseDown);
boardCanvas.addEventListener(MouseEvent.MOUSE_UP, handleMouseUp);
...
private function handleMouseDown(event:MouseEvent):void {
// Get the current mouse location wich may be adjusted to the grid
var selectPoint:Point = boardCanvas.globalToLocal(new Point(event.stageX, event.stageY));
startPoint = snapPoint(selectPoint.x, selectPoint.y);
boardView.lbl.text = '(' + startPoint.x +',' + startPoint.y + ')';
....
工具欄還聽點擊
<?xml version="1.0" encoding="utf-8"?>
<mx:Tile xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script>
<![CDATA[
import mx.charts.BubbleChart;
import org.edorado.edoboard.view.components.shapes.*;
public static const TOOL_CHANGE:String = "toolChange";
public static const TEXT_TOOL:String = "textTool";
public static const SELECT_TOOL:String = "selectTool";
public static const RECTANGLE_TOOL:String = "rectangleTool";
private var b:Button = null;
private function handleButtonClick(event:MouseEvent):void {
trace("CLICKED TOOL");
// selectButton.dispatchEvent(new Event(TOOL_CHANGE, true, true))
b = event.target as Button;
b.dispatchEvent(new Event(TOOL_CHANGE, true, true));
}
]]>
</mx:Script>
<!-- Use class facotry ? -->
<mx:Button id="selectButton"
name="{SELECT_TOOL}"
selectedUpSkin="assets.skins.ToolButtonSkin"
width="30"
height="30"
styleName="selectButton"
toolTip="selection"
click="handleButtonClick(event); " />
<mx:Button id="textButton"
name = "{TEXT_TOOL}"
selectedUpSkin="assets.skins.ToolButtonSkin"
width="30"
height="30"
styleName="textButton"
toolTip="text"
click="handleButtonClick(event);" />
<mx:Button id="rectButton"
name = "{RECTANGLE_TOOL}"
selectedUpSkin="assets.skins.ToolButtonSkin"
width="30"
height="30"
styleName="rectButton"
toolTip="rectButton"
click="handleButtonClick(event);" />
</mx:Tile>