在
www.silverlight.net上看到了制作一个silverlight 控件的视频,遗憾的是视频里没有讲怎么设计这个控件。于是追踪到作者的blog里下载到了他的代码,结果发现他的控件代码写得不完美。如果文字过长就会超出控件的边框。于是重新设计了下。
效果如下:
在讲怎么设计这个控件前,我把这个silverlight控件和asp.net里用户自定义控件做下类比.
userControl.ascx文件是用户自定义控件的皮肤文件,后台逻辑代码写在.cs里。而 silverlight控件的皮肤文件是.xaml文件,后台逻辑代码可以用.js文件,也可以用.cs 文件。
废话不多说了,我们动手设计吧。首先建立一个silverlight 类库项目:
项目建好后,删除里面默认的一个Class1.cs文件,添加一个silverlight控件。
然后把下列代码粘贴到.xaml文件里。
这段代码在vs2008里直接看不到效果,用blend2可以看到效果。
熟悉"Flash"设计的朋友会发现这个界面是有几个层组成的,包括了黑色的底色,白色的边框层,还有玻璃效果的一层,还有个文本层,还有一起上下分割两个色彩的层。
后台的核心逻辑代码如下:
这样一个控件就设计好了,那么如果使用这个控件呢?
我们再添加一个 silverlight Project 。
我们在这个项目添加上先前建的控件库项目的引用。
然后打开page.xaml文件对应的后台文件page.xaml.cs文件,在page_loaded事件里
加上如下代码:
效果如下:
在讲怎么设计这个控件前,我把这个silverlight控件和asp.net里用户自定义控件做下类比.
userControl.ascx文件是用户自定义控件的皮肤文件,后台逻辑代码写在.cs里。而 silverlight控件的皮肤文件是.xaml文件,后台逻辑代码可以用.js文件,也可以用.cs 文件。
废话不多说了,我们动手设计吧。首先建立一个silverlight 类库项目:
项目建好后,删除里面默认的一个Class1.cs文件,添加一个silverlight控件。
然后把下列代码粘贴到.xaml文件里。
xaml代码
1<Canvas
2 xmlns="http://schemas.microsoft.com/client/2007"
3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4 x:Name="GlassButton" Height="34" Width="120" RenderTransformOrigin="0.5,0.5">
5 <Canvas.Resources>
6 <Storyboard x:Name="GlassButtonGlow">
7 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButtonGlowEffect" Storyboard.TargetProperty="(UIElement.Opacity)">
8 <SplineDoubleKeyFrame KeyTime="00:00:00.3000000" Value="1"/>
9 </DoubleAnimationUsingKeyFrames>
10 </Storyboard>
11 <Storyboard x:Name="GlassButtonnormal">
12 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButtonGlowEffect" Storyboard.TargetProperty="(UIElement.Opacity)">
13 <SplineDoubleKeyFrame KeyTime="00:00:00.3000000" Value="0"/>
14 </DoubleAnimationUsingKeyFrames>
15 </Storyboard>
16 <Storyboard x:Name="GlassButtonDown">
17 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)">
18 <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="0.95"/>
19 </DoubleAnimationUsingKeyFrames>
20 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)">
21 <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="0.95"/>
22 </DoubleAnimationUsingKeyFrames>
23 </Storyboard>
24 <Storyboard x:Name="GlassButtonUp">
25 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)">
26 <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="1"/>
27 </DoubleAnimationUsingKeyFrames>
28 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)">
29 <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="1"/>
30 </DoubleAnimationUsingKeyFrames>
31 </Storyboard>
32 </Canvas.Resources>
33 <Canvas.RenderTransform>
34 <TransformGroup>
35 <ScaleTransform ScaleX="1" ScaleY="1"/>
36 <SkewTransform AngleX="0" AngleY="0"/>
37 <RotateTransform Angle="0"/>
38 <TranslateTransform X="0" Y="0"/>
39 </TransformGroup>
40 </Canvas.RenderTransform>
41 <!-- Outer border of the button just the stroke of the rectangle -->
42 <Rectangle Width="180" Height="34" RadiusX="5" RadiusY="5" strokeThickness="1" stroke="#FFFFFFFF" x:Name="OuterBorder"/>
43 <!-- Next in black border, and a somewhat opaque fill -->
44 <Rectangle Canvas.Top="1" Canvas.Left="1" Width="178" Height="32" RadiusX="4" RadiusY="4" Fill="#7F000000" stroke="#FF000000" strokeThickness="1" x:Name="InnerBorder" />
45 <!-- Radial gradient to give a glow to the button when rolled over -->
46 <Rectangle x:Name="GlassButtonGlowEffect" Canvas.Top="2" Canvas.Left="2" Width="176" Height="30" RadiusX="3" RadiusY="3" Opacity="0" >
47 <Rectangle.Fill>
48 <RadialGradientBrush>
49 <RadialGradientBrush.RelativeTransform>
50 <TransformGroup>
51 <ScaleTransform ScaleX="1.702" ScaleY="2.243"/>
52 <TranslateTransform X="-0.368" Y="-0.152"/>
53 </TransformGroup>
54 </RadialGradientBrush.RelativeTransform>
55 <GradientStop Color="#B28DBDFF" Offset="0" />
56 <GradientStop Color="#008DBDFF" Offset="1" />
57 </RadialGradientBrush>
58 </Rectangle.Fill>
59 </Rectangle>
60 <TextBlock x:Name="GlassButtonText" Canvas.Left="8" Canvas.Top="5" Foreground="#FFFFFFFF" Text="Click Me" Cursor="Hand" RenderTransformOrigin="0.5,0.5" FontFamily="Verdana" FontSize="16" >
61 <TextBlock.RenderTransform>
62 <TransformGroup>
63 <ScaleTransform ScaleX="1" ScaleY="1"/>
64 <SkewTransform AngleX="0" AngleY="0"/>
65 <RotateTransform Angle="0"/>
66 <TranslateTransform X="0" Y="0"/>
67 </TransformGroup>
68 </TextBlock.RenderTransform>
69 </TextBlock>
70 <!-- over the top of part of the text is a lighter opaque gradient, clipped to the top half of the button -->
71 <Rectangle Canvas.Left="2" Canvas.Top="2" Width="176" Height="30" RadiusX="3" RadiusY="3" x:Name="ButtonReflex">
72 <Rectangle.Fill>
73 <LinearGradientBrush StartPoint="0.494,0.028" EndPoint="0.494, 0.889" >
74 <GradientStop Color="#99FFFFFF" Offset="0" />
75 <GradientStop Color="#33FFFFFF" Offset="1" />
76 </LinearGradientBrush>
77 </Rectangle.Fill>
78 <Rectangle.Clip>
79 <RectangleGeometry x:Name="ReflexClip" Rect="0,176,15"/>
80 </Rectangle.Clip>
81 </Rectangle>
82</Canvas>
1<Canvas
2 xmlns="http://schemas.microsoft.com/client/2007"
3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4 x:Name="GlassButton" Height="34" Width="120" RenderTransformOrigin="0.5,0.5">
5 <Canvas.Resources>
6 <Storyboard x:Name="GlassButtonGlow">
7 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButtonGlowEffect" Storyboard.TargetProperty="(UIElement.Opacity)">
8 <SplineDoubleKeyFrame KeyTime="00:00:00.3000000" Value="1"/>
9 </DoubleAnimationUsingKeyFrames>
10 </Storyboard>
11 <Storyboard x:Name="GlassButtonnormal">
12 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButtonGlowEffect" Storyboard.TargetProperty="(UIElement.Opacity)">
13 <SplineDoubleKeyFrame KeyTime="00:00:00.3000000" Value="0"/>
14 </DoubleAnimationUsingKeyFrames>
15 </Storyboard>
16 <Storyboard x:Name="GlassButtonDown">
17 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)">
18 <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="0.95"/>
19 </DoubleAnimationUsingKeyFrames>
20 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)">
21 <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="0.95"/>
22 </DoubleAnimationUsingKeyFrames>
23 </Storyboard>
24 <Storyboard x:Name="GlassButtonUp">
25 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)">
26 <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="1"/>
27 </DoubleAnimationUsingKeyFrames>
28 <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="GlassButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)">
29 <SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="1"/>
30 </DoubleAnimationUsingKeyFrames>
31 </Storyboard>
32 </Canvas.Resources>
33 <Canvas.RenderTransform>
34 <TransformGroup>
35 <ScaleTransform ScaleX="1" ScaleY="1"/>
36 <SkewTransform AngleX="0" AngleY="0"/>
37 <RotateTransform Angle="0"/>
38 <TranslateTransform X="0" Y="0"/>
39 </TransformGroup>
40 </Canvas.RenderTransform>
41 <!-- Outer border of the button just the stroke of the rectangle -->
42 <Rectangle Width="180" Height="34" RadiusX="5" RadiusY="5" strokeThickness="1" stroke="#FFFFFFFF" x:Name="OuterBorder"/>
43 <!-- Next in black border, and a somewhat opaque fill -->
44 <Rectangle Canvas.Top="1" Canvas.Left="1" Width="178" Height="32" RadiusX="4" RadiusY="4" Fill="#7F000000" stroke="#FF000000" strokeThickness="1" x:Name="InnerBorder" />
45 <!-- Radial gradient to give a glow to the button when rolled over -->
46 <Rectangle x:Name="GlassButtonGlowEffect" Canvas.Top="2" Canvas.Left="2" Width="176" Height="30" RadiusX="3" RadiusY="3" Opacity="0" >
47 <Rectangle.Fill>
48 <RadialGradientBrush>
49 <RadialGradientBrush.RelativeTransform>
50 <TransformGroup>
51 <ScaleTransform ScaleX="1.702" ScaleY="2.243"/>
52 <TranslateTransform X="-0.368" Y="-0.152"/>
53 </TransformGroup>
54 </RadialGradientBrush.RelativeTransform>
55 <GradientStop Color="#B28DBDFF" Offset="0" />
56 <GradientStop Color="#008DBDFF" Offset="1" />
57 </RadialGradientBrush>
58 </Rectangle.Fill>
59 </Rectangle>
60 <TextBlock x:Name="GlassButtonText" Canvas.Left="8" Canvas.Top="5" Foreground="#FFFFFFFF" Text="Click Me" Cursor="Hand" RenderTransformOrigin="0.5,0.5" FontFamily="Verdana" FontSize="16" >
61 <TextBlock.RenderTransform>
62 <TransformGroup>
63 <ScaleTransform ScaleX="1" ScaleY="1"/>
64 <SkewTransform AngleX="0" AngleY="0"/>
65 <RotateTransform Angle="0"/>
66 <TranslateTransform X="0" Y="0"/>
67 </TransformGroup>
68 </TextBlock.RenderTransform>
69 </TextBlock>
70 <!-- over the top of part of the text is a lighter opaque gradient, clipped to the top half of the button -->
71 <Rectangle Canvas.Left="2" Canvas.Top="2" Width="176" Height="30" RadiusX="3" RadiusY="3" x:Name="ButtonReflex">
72 <Rectangle.Fill>
73 <LinearGradientBrush StartPoint="0.494,0.028" EndPoint="0.494, 0.889" >
74 <GradientStop Color="#99FFFFFF" Offset="0" />
75 <GradientStop Color="#33FFFFFF" Offset="1" />
76 </LinearGradientBrush>
77 </Rectangle.Fill>
78 <Rectangle.Clip>
79 <RectangleGeometry x:Name="ReflexClip" Rect="0,176,15"/>
80 </Rectangle.Clip>
81 </Rectangle>
82</Canvas>
这段代码在vs2008里直接看不到效果,用blend2可以看到效果。
熟悉"Flash"设计的朋友会发现这个界面是有几个层组成的,包括了黑色的底色,白色的边框层,还有玻璃效果的一层,还有个文本层,还有一起上下分割两个色彩的层。
后台的核心逻辑代码如下:
/**/
/// <summary>
/// 根据文本的长度,重新绘制控件的大小
/// </summary>
private void ResizeControl()
{
double left;
double top;
TextBlock tb = actControl.FindName("GlassButtonText") as TextBlock;
tb.Text = txtbutton;
if (autoSize)//如果控件的长度根据文本的长度自动调整
{
actControl.Height = tb.ActualHeight + 8 ;
actControl.Width = tb.ActualWidth + 16;
OuterBorder.Width = tb.ActualWidth + 20;
OuterBorder.Height = tb.ActualHeight + 10;
InnerBorder.Width = tb.ActualWidth + 16;
InnerBorder.Height = tb.ActualHeight + 8;
GlassButtonGlowEffect.Width = tb.ActualWidth + 16;
GlassButtonGlowEffect.Height = tb.ActualHeight + 8;
ButtonReflex.Width = tb.ActualWidth + 16;
ButtonReflex.Height = tb.ActualHeight + 8;
ReflexClip.Rect = new Rect(new Point(0, 0), new Point(tb.ActualWidth + 16, (tb.ActualHeight + 8)/2));
}
else//根据传入的参数设定控件的长度
{
actControl.Height = this.Height;
actControl.Width = this.Width;
}
left = (actControl.Width - tb.ActualWidth) / 2;
top = (actControl.Height - tb.ActualHeight) / 2;
tb.SetValue<double>(Canvas.TopProperty, top);//设定文本在绘制面板中的坐标,也就是要使其在控件的中间位置。
tb.SetValue<double>(Canvas.LeftProperty, left);
}
/// 根据文本的长度,重新绘制控件的大小
/// </summary>
private void ResizeControl()
{
double left;
double top;
TextBlock tb = actControl.FindName("GlassButtonText") as TextBlock;
tb.Text = txtbutton;
if (autoSize)//如果控件的长度根据文本的长度自动调整
{
actControl.Height = tb.ActualHeight + 8 ;
actControl.Width = tb.ActualWidth + 16;
OuterBorder.Width = tb.ActualWidth + 20;
OuterBorder.Height = tb.ActualHeight + 10;
InnerBorder.Width = tb.ActualWidth + 16;
InnerBorder.Height = tb.ActualHeight + 8;
GlassButtonGlowEffect.Width = tb.ActualWidth + 16;
GlassButtonGlowEffect.Height = tb.ActualHeight + 8;
ButtonReflex.Width = tb.ActualWidth + 16;
ButtonReflex.Height = tb.ActualHeight + 8;
ReflexClip.Rect = new Rect(new Point(0, 0), new Point(tb.ActualWidth + 16, (tb.ActualHeight + 8)/2));
}
else//根据传入的参数设定控件的长度
{
actControl.Height = this.Height;
actControl.Width = this.Width;
}
left = (actControl.Width - tb.ActualWidth) / 2;
top = (actControl.Height - tb.ActualHeight) / 2;
tb.SetValue<double>(Canvas.TopProperty, top);//设定文本在绘制面板中的坐标,也就是要使其在控件的中间位置。
tb.SetValue<double>(Canvas.LeftProperty, left);
}
这样一个控件就设计好了,那么如果使用这个控件呢?
我们再添加一个 silverlight Project 。
我们在这个项目添加上先前建的控件库项目的引用。
然后打开page.xaml文件对应的后台文件page.xaml.cs文件,在page_loaded事件里
加上如下代码:
1
double
top
=
100
;
2
3 double left = 20 ;
4
5 SilverControls.txtBoxControl txtBox = new SilverControls.txtBoxControl();
6
7 txtBox.ButtonText = " Hello! " ;
8
9 txtBox.SetValue < double > (Canvas.TopProperty, top);
10
11 txtBox.SetValue < double > (Canvas.LeftProperty, left);
12
13 this .Children.Add(txtBox);
14
2
3 double left = 20 ;
4
5 SilverControls.txtBoxControl txtBox = new SilverControls.txtBoxControl();
6
7 txtBox.ButtonText = " Hello! " ;
8
9 txtBox.SetValue < double > (Canvas.TopProperty, top);
10
11 txtBox.SetValue < double > (Canvas.LeftProperty, left);
12
13 this .Children.Add(txtBox);
14
然后保存,在浏览器里查看textpage.html页面就可以了。
源代码如下:
/Files/wangergo/silverlightControlSample.rar
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