Spark TitleWindow的标题栏字体大小更改

Question

当我尝试更改 TitleWindows 标题栏的字体大小时，整个容器更改为新的字体大小。但我不想实现这个目标。我只想将其放在标题栏上。

我使用过的代码（不成功）

<s:TitleWindow name="MyTitleWindow"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx"
        title="Search"
        width="1200"
        height="800"
        fontSize="24"
        preinitialize="preInit();"
        close="handleCloseEvent(event);" >

---
---
</s:TitleWindow>

我使用的是Flex4和Spark。

Answer 1

我建议您基于spark.skins.spark.TitleWindowSkin创建自己的皮肤，并使用id更改Label的相应属性与idtitleDisplay。

您可以在官方文档中阅读有关换肤的更多详细信息< /a>.

您的窗口的示例皮肤如下（仅添加了一个属性）：

<?xml version="1.0" encoding="utf-8"?>
<s:SparkSkin xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" 
    xmlns:fb="http://ns.adobe.com/flashbuilder/2009" blendMode="normal" mouseEnabled="false"
    minWidth="76" minHeight="76" alpha.disabled="0.5" alpha.disabledWithControlBar="0.5">

    <fx:Metadata>
        <![CDATA[ 
        /** 
         * @copy spark.skins.spark.ApplicationSkin#hostComponent
         */
        [HostComponent("spark.components.TitleWindow")]
        ]]>
    </fx:Metadata> 

    <fx:Script fb:purpose="styling">
        <![CDATA[
        import mx.core.FlexVersion;

        /* Define the skin elements that should not be colorized. 
        For panel, border and title background are skinned, but the content area, background, border, and title text are not. */
        static private const exclusions:Array = ["background", "titleDisplay", "contentGroup", "border"];

        /* exclusions before Flex 4.5 for backwards-compatibility purposes */
        static private const exclusions_4_0:Array = ["background", "titleDisplay", "contentGroup"];

        /**
         * @private
         */
        override public function get colorizeExclusions():Array 
        {
            // Since border is styleable via borderColor, no need to allow chromeColor to affect
            // the border.  This is wrapped in a compatibility flag since this change was added  
            // in Flex 4.5
            if (FlexVersion.compatibilityVersion < FlexVersion.VERSION_4_5)
            {
                return exclusions_4_0;
            }

            return exclusions;
        }

        /**
         * @private
         */
        override protected function initializationComplete():void
        {
            useChromeColor = true;
            super.initializationComplete();
        }

        /**
         * @private
         */
        override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
        {
            if (getStyle("borderVisible") == true)
            {
                border.visible = true;
                background.left = background.top = background.right = background.bottom = 1;
                contents.left = contents.top = contents.right = contents.bottom = 1;
            }
            else
            {
                border.visible = false;
                background.left = background.top = background.right = background.bottom = 0;
                contents.left = contents.top = contents.right = contents.bottom = 0;
            }

            dropShadow.visible = getStyle("dropShadowVisible");

            var cr:Number = getStyle("cornerRadius");
            var withControls:Boolean = 
                (currentState == "disabledWithControlBar" || 
                 currentState == "normalWithControlBar" ||
                 currentState == "inactiveWithControlBar");

            if (cornerRadius != cr)
            {
                cornerRadius = cr;

                dropShadow.tlRadius = cornerRadius;
                dropShadow.trRadius = cornerRadius;
                dropShadow.blRadius = withControls ? cornerRadius : 0;
                dropShadow.brRadius = withControls ? cornerRadius : 0;

                setPartCornerRadii(topMaskRect, withControls); 
                setPartCornerRadii(border, withControls); 
                setPartCornerRadii(background, withControls);
            }

            if (bottomMaskRect) setPartCornerRadii(bottomMaskRect, withControls); 

            borderStroke.color = getStyle("borderColor");
            borderStroke.alpha = getStyle("borderAlpha");
            backgroundFill.color = getStyle("backgroundColor");
            backgroundFill.alpha = getStyle("backgroundAlpha");

            super.updateDisplayList(unscaledWidth, unscaledHeight);
        }

        /**
         * @private
         */  
        private function setPartCornerRadii(target:Rect, includeBottom:Boolean):void
        {            
            target.topLeftRadiusX = cornerRadius;
            target.topRightRadiusX = cornerRadius;
            target.bottomLeftRadiusX = includeBottom ? cornerRadius : 0;
            target.bottomRightRadiusX = includeBottom ? cornerRadius : 0;
        }

        private var cornerRadius:Number;
        ]]>
    </fx:Script>

    <s:states>
        <s:State name="normal" />
        <s:State name="inactive" stateGroups="inactiveGroup" />
        <s:State name="disabled" />
        <s:State name="normalWithControlBar" stateGroups="withControls" />
        <s:State name="inactiveWithControlBar" stateGroups="withControls, inactiveGroup" />
        <s:State name="disabledWithControlBar" stateGroups="withControls" />
    </s:states>

    <!--- drop shadow can't be hittable so it stays sibling of other graphics @private-->
    <s:RectangularDropShadow id="dropShadow" blurX="20" blurY="20" alpha="0.32" 
                             alpha.inactiveGroup="0.22" distance="11"  distance.inactiveGroup="7"
                             angle="90" color="0x000000" left="0" top="0" right="0" bottom="0"/>

    <!--- drop shadow can't be hittable so all other graphics go in this group -->
    <s:Group left="0" right="0" top="0" bottom="0">

        <!--- top group mask @private-->
        <s:Group left="1" top="1" right="1" bottom="1" id="topGroupMask">
            <!--- @private-->
            <s:Rect id="topMaskRect" left="0" top="0" right="0" bottom="0">
                <s:fill>
                    <s:SolidColor alpha="0"/>
                </s:fill>
            </s:Rect>
        </s:Group>

        <!--- bottom group mask @private-->
        <s:Group left="1" top="1" right="1" bottom="1" id="bottomGroupMask" 
                 includeIn="withControls">
            <!--- @private-->
            <s:Rect id="bottomMaskRect" left="0" top="0" right="0" bottom="0">
                <s:fill>
                    <s:SolidColor alpha="0"/>
                </s:fill>
            </s:Rect>
        </s:Group>

        <!--- layer 1: border @private -->
        <s:Rect id="border" left="0" right="0" top="0" bottom="0" >
            <s:stroke>
                <!--- Defines the TitleWindowSkin class's border stroke. The default value is 1. -->
                <s:SolidColorStroke id="borderStroke" weight="1" />
            </s:stroke>
        </s:Rect>

        <!-- layer 2: background fill -->
        <!--- Defines the appearance of the TitleWindowSkin class's background. -->
        <s:Rect id="background" left="1" top="1" right="1" bottom="1">
            <s:fill>
                <!--- Defines the TitleWindowSkin class's background fill. The default color is 0xFFFFFF. -->
                <s:SolidColor id="backgroundFill" color="#FFFFFF"/>
            </s:fill>
        </s:Rect>

        <!-- layer 3: contents -->
        <!--- Contains the vertical stack of title bar content and control bar. -->
        <s:Group left="1" right="1" top="1" bottom="1" id="contents">
            <s:layout>
                <s:VerticalLayout gap="0" horizontalAlign="justify" />
            </s:layout>
            <!--- @private -->
            <s:Group id="topGroup" mask="{topGroupMask}">

                <!--- layer 0: title bar fill @private -->
                <s:Rect id="tbFill" left="0" right="0" top="0" bottom="1">
                    <s:fill>
                        <s:LinearGradient rotation="90">
                            <s:GradientEntry color="0xD2D2D2"
                                             color.inactiveGroup="0xEAEAEA"/>
                            <s:GradientEntry color="0x9A9A9A"
                                             color.inactiveGroup="0xCECECE"/>
                        </s:LinearGradient>
                    </s:fill>
                </s:Rect>

                <!--- layer 1: title bar highlight @private -->
                <s:Rect id="tbHilite" left="0" right="0" top="0" bottom="0">
                    <s:stroke>
                        <s:LinearGradientStroke rotation="90" weight="1">
                            <s:GradientEntry color="0xE6E6E6" />
                            <s:GradientEntry color="0xFFFFFF" alpha="0.22"/>
                        </s:LinearGradientStroke>
                    </s:stroke>
                    <s:fill>
                        <s:LinearGradient rotation="90">
                            <s:GradientEntry color="0xFFFFFF" alpha="0.15" />
                            <s:GradientEntry color="0xFFFFFF" alpha="0.15" ratio="0.44"/>
                            <s:GradientEntry color="0xFFFFFF" alpha="0" ratio="0.4401"/>
                        </s:LinearGradient>
                    </s:fill>
                </s:Rect>

                <!--- layer 2: title bar divider @private -->
                <s:Rect id="tbDiv" left="0" right="0" height="1" bottom="0">
                    <s:fill>
                        <s:SolidColor color="0x000000" alpha="0.75" />
                    </s:fill>
                </s:Rect>

                <!-- layer 3: text -->
                <!--- @copy spark.components.Panel#titleDisplay -->
                <s:Label id="titleDisplay" maxDisplayedLines="1"
                         left="9" right="36" top="1" bottom="0" minHeight="30"
                         verticalAlign="middle" fontWeight="bold" fontSize="20" />

                <!-- layer 4: moveArea -->
                <!--- @copy spark.components.TitleWindow#moveArea -->
                <s:Group id="moveArea" left="0" right="0" top="0" bottom="0" />

                <!--- @copy spark.components.TitleWindow#closeButton -->
                <s:Button id="closeButton" skinClass="spark.skins.spark.TitleWindowCloseButtonSkin"
                          width="15" height="15" right="7" top="7" />
            </s:Group>

            <!--
                Note: setting the minimum size to 0 here so that changes to the host component's
                size will not be thwarted by this skin part's minimum size.   This is a compromise,
                more about it here: http://bugs.adobe.com/jira/browse/SDK-21143
            -->
            <!--- @copy spark.components.SkinnableContainer#contentGroup -->
            <s:Group id="contentGroup" width="100%" height="100%" minWidth="0" minHeight="0">
            </s:Group>

            <!--- @private -->
            <s:Group id="bottomGroup" minWidth="0" minHeight="0" 
                     includeIn="withControls">  

                <s:Group left="0" right="0" top="0" bottom="0" mask="{bottomGroupMask}">

                    <!-- layer 0: control bar divider line -->
                    <s:Rect left="0" right="0" top="0" height="1" alpha="0.22">
                        <s:fill>
                            <s:SolidColor color="0x000000" />
                        </s:fill>
                    </s:Rect>

                    <!-- layer 1: control bar highlight -->
                    <s:Rect left="0" right="0" top="1" bottom="0">
                        <s:stroke>
                            <s:LinearGradientStroke rotation="90" weight="1">
                                <s:GradientEntry color="0xFFFFFF" />
                                <s:GradientEntry color="0xD8D8D8" />
                            </s:LinearGradientStroke>
                        </s:stroke>
                    </s:Rect>

                    <!-- layer 2: control bar fill -->
                    <s:Rect left="1" right="1" top="2" bottom="1">
                        <s:fill>
                            <s:LinearGradient rotation="90">
                                <s:GradientEntry color="0xEDEDED"/>
                                <s:GradientEntry color="0xCDCDCD"/>
                            </s:LinearGradient>
                        </s:fill>
                    </s:Rect>
                </s:Group>

                <!--- @copy spark.components.Panel#controlBarGroup -->
                <s:Group id="controlBarGroup" left="0" right="0" top="1" bottom="1" minWidth="0" minHeight="0">
                    <s:layout>
                        <s:HorizontalLayout paddingLeft="10" paddingRight="10" paddingTop="7" paddingBottom="7" gap="10" />
                    </s:layout>
                </s:Group>
            </s:Group>
        </s:Group>
    </s:Group>
</s:SparkSkin>

您可以使用外部 CSS 文件或直接在 MXML 中应用它：

<s:TitleWindow skinClass="MyTitleWindowSkin" />

或者在 ActionScript 中：

myWindow.setStyle("skinClass", MyTitleWindowSkin);

Answer 2

解决了上述问题

<s:TitleWindow name="MyTitleWindow"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx"
        title="Search"
        width="600" height="800"
        creationComplete="complete();"  
        close="handleCloseEvent(event);">

----
----

我已经通过Actionscript Part

        private function complete():void {
            trace("Style" + this.titleDisplay.getStyle("fontSize")); 
            this.titleDisplay.setStyle("fontSize", "30");
        }

：这样我就可以只更改 titleBar fontSize。

希望它能帮助其他人。