WPF界面设计技巧(1)—不规则窗体图文指南

简介: 原文:WPF界面设计技巧(1)—不规则窗体图文指南  初到园子,奉上第一篇入门级教程,请勿见笑。 以往WinForm编程中,实现不规则窗体是有一定难度的,更难的是不规则窗体的边缘抗锯齿及局部透明处理。
原文: WPF界面设计技巧(1)—不规则窗体图文指南

 

初到园子,奉上第一篇入门级教程,请勿见笑。

以往WinForm编程中,实现不规则窗体是有一定难度的,更难的是不规则窗体的边缘抗锯齿及局部透明处理。而现在,WPF的出现使这个问题迎刃而解,使得我们可以轻松、灵活地美化用户界面。

下面就让我们来看看如何实现一个不规则窗体:

首先我们需要借助Microsoft Expression Design 2来进行图形设计。(这里使用Photoshop等传统软件也可以,但是只能利用PNG格式来实现透明,其缺点就是不支持无损缩放,且不支持动态修改。)

打开Microsoft Expression Design 2中文版,点击菜单“文件 > 新建”,依照下图进行设置,这里将文档尺寸单位设为“像素”,便于与应用程序的布局单位相对应。

然后随心所欲的画吧,想画成什么样都行,但注意Microsoft Expression Design 2中绘制的图形并非全部都是矢量的,比如纹理填充、一些特殊笔刷以及滤镜效果(输出时有“将实时效果转换为XAML效果的选项,但是点了无用,不知道是不是BUG)都会以位图形式输出。

这是我画出来的图形:

这里要注意的是:最好将所有元素都放在一个图层里,因为我们后面导出资源字典的时候需要依据图层来分组,我们画好之后要给图层重命名,在这里我给它命名为“back”,这个名称将在后面代码中引用资源时使用。

接下来点击菜单“文件 > 导出...”,将格式设为“XAML WPF 资源字典”,分组依据设为“层”,实时效果设为“转换为XAML效果”(貌似无用的设置)。然后按“浏览...”按钮选择输出路径,然后按“全部导出”按钮完成导出。

然后就可以保存文件,关闭Microsoft Expression Design 2了。

打开Microsoft Visual Studio 2008,点击菜单“文件 > 新建 > 项目...”,选择“WPF 应用程序”,名称设为“不规则窗体”。

点击菜单“项目 > 添加现有项...”,浏览并选择此前导出的资源字典文件(选的时候注意把右边的文件类型过滤改一下,默认是C#文件类型)。如下图所示,这就是导入的资源字典文件。

引入的资源字典内容如下,我们不需要搞明白这些对图形的描述语法,只要了解其中的“x:Key="back"”对应的是我们之前设计时的图层名称,我们在程序中引用此资源时要使用这个名称。

 

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<Pen Thickness="1.5" LineJoin="Round" Brush="#FF7D2500"/>
                        
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<RadialGradientBrush RadiusX="0.592287" RadiusY="0.672395" Center="0.450544,0.443124" GradientOrigin="0.450544,0.443124">
                                
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<GradientStop Color="#FFFFFFFF" Offset="0"/>
                                    
<GradientStop Color="#FFD5D5D5" Offset="1"/>
                                
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<RadialGradientBrush.RelativeTransform>
                                    
<TransformGroup/>
                                
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</GeometryDrawing>
                    
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</DrawingBrush>
</ResourceDictionary>

 

现在我们要把这个资源字典引入程序集,打开“App.xaml”文件,添加下图中红色框内的代码。

 

< Application  x:Class ="不规则窗体.App"
    xmlns
="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x
="http://schemas.microsoft.com/winfx/2006/xaml"
    StartupUri
="Window1.xaml" >
    
< Application.Resources >
        
< ResourceDictionary >
            
< ResourceDictionary.MergedDictionaries >
                
< ResourceDictionary  Source ="cnblogs-SkyD.xaml" />
            
</ ResourceDictionary.MergedDictionaries >
        
</ ResourceDictionary >
    
</ Application.Resources >
</ Application >

 

然后打开“Window1.xaml”文件的设计视图,点击窗体边缘以选中窗体,依照下图所示,在属性面板中更改AllowsTransparencyWindowStyle属性。

AllowsTransparency 指示窗体是否支持透明。

WindowStyle指示窗体边框样式,设为 None 为无边框。

切换到XAML代码视图,依照下图所示,为 Window 元素添加Background MouseDown属性定义。

Background 属性指示窗体的背景,这里引用资源中的“back”,就是我们之前画好的图形啦。

MouseDown 是鼠标按下时产生的事件,我们要为之定义一个事件处理函数以实现窗体拖动功能。

 

< Window  x:Class ="不规则窗体.Window1"
    xmlns
="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x
="http://schemas.microsoft.com/winfx/2006/xaml"
    Title
="Window1"  
    Height
="450"  
    Width
="450"  
    AllowsTransparency
="True"  
    WindowStyle
="None"  
    Background
=" {StaticResource back} "
    MouseDown
="Window_MouseDown" >
    
< Grid >
        
    
</ Grid >
</ Window >

 

在上图的“Window_MouseDown”字符上单击右键,在弹出菜单中选择“定位到事件处理程序”,即会转到“Window1.xaml.cs”代码视图,依照下图输入代码。

 

         private   void  Window_MouseDown( object  sender, MouseButtonEventArgs e)
        
{
            
if(e.ChangedButton==MouseButton.Left)this.DragMove();
        }

 

至此就完成了不规则窗体的创制了。

编译运行看看:

嗯嗯,效果很酷的说,你说什么?没有关闭按钮?这么好看的界面你舍得关吗?

好吧,要实现关闭按钮也很简单啦,自己搞个按钮在上面,在 Click 事件中执行 this.Close(); OK啦,我是懒得搞了哈。

 

此效果在任何装有.Net框架3.0的机器上都可以运作,不用再羡慕Adobe AIR的外观了,WPF可以做得更好!

 

再来张Vista切换窗口时的图:

 

 

 源代码下载(包含Design设计文件):不规则窗体

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