我在Flex的TabBar上使用自定义皮肤,特别是控件ButtonBarButton的皮肤。按钮的宽度是可变大小,具体取决于它包含的文本,按钮的背景是仅显示在按钮的选定状态的图像。
以下是我的皮肤MXML:
<!-- states -->
<s:states>
<s:State name="up" />
<s:State name="over" stateGroups="overStates" />
<s:State name="down" stateGroups="downStates" />
<s:State name="disabled" stateGroups="disabledStates" />
<s:State name="upAndSelected" stateGroups="selectedStates, selectedUpStates" />
<s:State name="overAndSelected" stateGroups="overStates, selectedStates" />
<s:State name="downAndSelected" stateGroups="downStates, selectedStates" />
<s:State name="disabledAndSelected" stateGroups="selectedUpStates, disabledStates, selectedStates" />
</s:states>
<!-- invisible background to prevent "machine gun" flickering on edge of button -->
<s:Rect top="0" bottom="0" left="0" right="0">
<s:fill>
<s:SolidColor color="0xFFFFFF"
alpha="0.0"/>
</s:fill>
</s:Rect>
<s:Group>
<s:layout>
<s:HorizontalLayout gap="0"/>
</s:layout>
<!-- left edge of button -->
<s:BitmapImage source.selectedStates="images/btn_left.png"
top="0" bottom="0" left="0"
width="6"/>
<!-- background and text of button -->
<s:Group>
<!-- layer 1: image -->
<s:BitmapImage source.selectedStates="images/btn_bg.png"
fillMode="repeat"
left="0" right="0"/>
<!-- layer 2: text -->
<!--- @copy spark.components.supportClasses.ButtonBase#labelDisplay -->
<s:Label id="labelDisplay"
textAlign="center"
verticalAlign="middle"
maxDisplayedLines="1"
horizontalCenter="0" verticalCenter="1"
left="10" right="10" top="2" bottom="2">
</s:Label>
</s:Group>
<!-- right edge of button -->
<s:BitmapImage source.selectedStates="images/btn_right.png"
top="0" bottom="0" right="0"
width="6"/>
</s:Group>
鼠标悬停和鼠标移开时按钮闪烁。有没有人知道我是否错过了这种按钮的状态,或者我是否错误地应用了按钮的来源?
对于更多代码,TabBar组件的布局如下:
<s:Group>
<s:layout>
<s:VerticalLayout/>
</s:layout>
<s:Group>
<s:layout>
<s:HorizontalLayout/>
</s:layout>
<s:Label text="Title:"/>
<s:Label text="Sign in"/>
</s:Group>
<s:TabBar dataProvider="{navigationList}"
chromeColor="#FFFFFF"
skinClass="skins.NavigationBarSkin"/>
</s:Group>
并且重写的TabBarSkin具有以下代码段:
<!-- layer 1 background -->
<s:Rect id="backgroundFill" topLeftRadiusX="4" topRightRadiusX="4" top="0" bottom="0" left="0" right="0">
<s:fill>
<s:LinearGradient>
<s:GradientEntry color="0x625454"/>
<s:GradientEntry color="0x3F3536"/>
</s:LinearGradient>
</s:fill>
</s:Rect>
<!--- @copy spark.components.SkinnableDataContainer#dataGroup -->
<s:DataGroup id="dataGroup"
top="10" left="15" right="15" bottom="0">
<s:layout>
<s:ButtonBarHorizontalLayout gap="10" />
</s:layout>
<s:itemRenderer>
<fx:Component>
<s:ButtonBarButton skinClass="skins.NavigationBarButtonSkin" />
</fx:Component>
</s:itemRenderer>
</s:DataGroup>
我尝试将整个块包装在Group标签中,但无济于事。不可见的Rect确实修复了当鼠标悬停在按钮的任何边缘时发生的“机枪”闪烁,但是每个鼠标进入鼠标并且每个按钮的鼠标离开时仍然存在闪烁。
答案 0 :(得分:0)
想出来:
关键是通过@Embed方法设置BitmapImage的源。
<s:BitmapImage source.selectedStates="@Embed('images/btn_left.png')"/>
从我在Flash工作的日子里,我应该记住这一点。如果未使用嵌入注释,则资源被链接,因此每次更改状态时都会获取资源,即鼠标悬停和鼠标移出。
感谢您尽快回复!