WPF实现Twitter按钮效果

最近上网看到这个CSS3实现的Twitter按钮,感觉很漂亮,于是想用WPF来实现下.

实现这个效果,参考了CSS3 原文地址:http://www.html5tricks.com/css3-twitter-3d-button.html

我并不知道这是不是原文的出处,我仅仅是在这里看到的.如果原文作者看到,这并不是原文出处,请留言给我.

效果版权属于Twitter,本文仅仅是WPF技术交流

效果如图:

实现这个并没有用到3D,仅仅是一系列动画的组合,使它看起来像3D.

控件模版一共分4大部分:

1. 盒子内部的Content
2. 盒子盖外表皮
3. 盒子盖拉下来后下面的阴影
4. 盒子盖内表皮

里面的"Follow @bennettfeely"是个带下划线的TextBlock,放到了Content里面.外面的"t"放到了Tag里.通过动画控制放缩ScaleTransform来实现.

        <Style TargetType="{x:Type Button}">
            <Setter Property="Width" Value="174"></Setter>
            <Setter Property="Foreground" Value="#777"></Setter>
            <Setter Property="VerticalAlignment" Value="Center"></Setter>
            <Setter Property="HorizontalContentAlignment" Value="Center"></Setter>
            <Setter Property="VerticalContentAlignment" Value="Center"></Setter>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="42"></RowDefinition>
                                <RowDefinition Height="auto"></RowDefinition>
                            </Grid.RowDefinitions>
                            <!--内部内容-->
                            <Grid>
                                <Border CornerRadius="4" Background="#EBEFF2" BorderThickness="1,2,1,0" BorderBrush="#ccc">
                                    <ContentPresenter x:Name="content" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"></ContentPresenter>
                                </Border>
                                <Border Background="#31000000">
                                    <Border.OpacityMask>
                                        <RadialGradientBrush GradientOrigin="0.5,1.5" RadiusY="1">
                                            <GradientStop Color="#00000000" Offset="0"/>
                                            <GradientStop x:Name="contentBackgroundStop" Color="#FF000000" Offset="1"/>
                                        </RadialGradientBrush>
                                    </Border.OpacityMask>
                                </Border>
                            </Grid>
                            <!--盒子盖外部-->
                            <Grid RenderTransformOrigin="0.5,1">
                                <Grid.RenderTransform>
                                    <ScaleTransform x:Name="coveroutiestf" ScaleX="1" ScaleY="1"></ScaleTransform>
                                </Grid.RenderTransform>
                                <Border Name="cover_outie" CornerRadius="4" Background="#2EC8FA">
                                    <Label Content="{TemplateBinding Tag}" HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="White" FontSize="16">
                                        <Label.Effect>
                                            <DropShadowEffect ShadowDepth="2" Direction="270" BlurRadius="4" Color="#31000000"></DropShadowEffect>
                                        </Label.Effect>
                                    </Label>
                                </Border>
                                <Border Name="cover_outie_spine" CornerRadius="4" Background="#FFD6EFF5" Height="4.2" VerticalAlignment="Top" RenderTransformOrigin="0.5,0">
                                    <Border.RenderTransform>
                                        <ScaleTransform x:Name="coveroutiespinestf" ScaleX="1" ScaleY="0"></ScaleTransform>
                                    </Border.RenderTransform>
                                </Border>
                                <Border CornerRadius="4" Background="#FF000000">
                                    <Border.OpacityMask>
                                        <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
                                            <GradientStop Color="#00000000" Offset="0"/>
                                            <GradientStop Color="#15000000" Offset="1"/>
                                        </LinearGradientBrush>
                                    </Border.OpacityMask>
                                </Border>
                            </Grid>
                            <!--底部阴影-->
                            <Path Grid.Row="1" Name="shadow" RenderTransformOrigin="0.5,0">
                                <Path.Data>
                                    <PathGeometry>
                                        <PathFigure StartPoint="2,0">
                                            <LineSegment Point="172,0"></LineSegment>
                                            <ArcSegment Point="174,2" Size="2,2" SweepDirection="Clockwise"></ArcSegment>
                                            <LineSegment Point="170,40"></LineSegment>
                                            <ArcSegment Point="168,42" Size="2,2" SweepDirection="Clockwise"></ArcSegment>
                                            <LineSegment Point="6,42"></LineSegment>
                                            <ArcSegment Point="4,40" Size="2,2" SweepDirection="Clockwise"></ArcSegment>
                                            <LineSegment Point="0,2"></LineSegment>
                                            <ArcSegment Point="2,0" Size="2,2" SweepDirection="Clockwise"></ArcSegment>
                                        </PathFigure>
                                    </PathGeometry>
                                </Path.Data>
                                <Path.RenderTransform>
                                    <ScaleTransform x:Name="shadowstf" ScaleX="1" ScaleY="0"></ScaleTransform>
                                </Path.RenderTransform>
                                <Path.Fill>
                                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                        <GradientStop Color="#95000000" Offset="0"/>
                                        <GradientStop Color="#00000000" Offset="1"/>
                                    </LinearGradientBrush>
                                </Path.Fill>
                            </Path>
                            <!--盒子盖内部-->
                            <Grid Grid.Row="1" Height="42" VerticalAlignment="Top" RenderTransformOrigin="0.5,0">
                                <Grid.RenderTransform>
                                    <ScaleTransform x:Name="coverinniestf" ScaleY="0" ScaleX="1"/>
                                </Grid.RenderTransform>
                                <Border Name="cover_innie" CornerRadius="4" Background="#FF67E2FE">
                                    <Label Content="{TemplateBinding Tag}" HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="White" FontSize="16" RenderTransformOrigin="0.5,0.5">
                                        <Label.RenderTransform>
                                            <ScaleTransform ScaleY="-1" ScaleX="1"/>
                                        </Label.RenderTransform>
                                        <Label.Effect>
                                            <DropShadowEffect ShadowDepth="2" Direction="270" BlurRadius="4" Color="#31000000"></DropShadowEffect>
                                        </Label.Effect>
                                    </Label>
                                </Border>
                                <Border Name="cover_innie_spine" CornerRadius="4" Background="#52B1E0" Height="4.2" VerticalAlignment="Bottom"></Border>
                            </Grid>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsPressed" Value="true">
                                <Setter Property="Foreground" Value="red"></Setter>
                            </Trigger>
                            <EventTrigger RoutedEvent="MouseEnter">
                                <BeginStoryboard>
                                    <Storyboard>
                                        <!--内部内容背景-->
                                        <ColorAnimation Storyboard.TargetName="contentBackgroundStop" Storyboard.TargetProperty="Color" To="#31000000" Duration="00:00:0.3"></ColorAnimation>
                                        <!--盒子外部动画0.3秒 内部0.15秒 其中有0.05秒的重叠 一共是0.4秒-->
                                        <!--盒子盖的外部-->
                                        <DoubleAnimation Storyboard.TargetName="coveroutiestf" Storyboard.TargetProperty="ScaleY" To="0" Duration="00:00:0.3"></DoubleAnimation>
                                        <DoubleAnimation Storyboard.TargetName="coveroutiespinestf" Storyboard.TargetProperty="ScaleY" To="1" Duration="00:00:0.05"></DoubleAnimation>
                                        <!--盒子盖的内部-->
                                        <DoubleAnimation Storyboard.TargetName="coverinniestf" Storyboard.TargetProperty="ScaleY" To="0.5" BeginTime="00:00:0.25" Duration="00:00:0.15"></DoubleAnimation>
                                        <!--底部阴影-->
                                        <DoubleAnimation Storyboard.TargetName="shadowstf" Storyboard.TargetProperty="ScaleY" To="1" Duration="00:00:0.4"></DoubleAnimation>
                                    </Storyboard>
                                </BeginStoryboard>
                            </EventTrigger>
                            <EventTrigger RoutedEvent="MouseLeave">
                                <BeginStoryboard>
                                    <Storyboard>
                                        <ColorAnimation Storyboard.TargetName="contentBackgroundStop" Storyboard.TargetProperty="Color" To="#FF000000" BeginTime="00:00:0.1" Duration="00:00:0.3"></ColorAnimation>
                                        <DoubleAnimation Storyboard.TargetName="coveroutiestf" Storyboard.TargetProperty="ScaleY" To="1" BeginTime="00:00:0.1" Duration="00:00:0.3"></DoubleAnimation>
                                        <DoubleAnimation Storyboard.TargetName="coveroutiespinestf" Storyboard.TargetProperty="ScaleY" To="0" BeginTime="00:00:0.35" Duration="00:00:0.05"></DoubleAnimation>
                                        <DoubleAnimation Storyboard.TargetName="coverinniestf" Storyboard.TargetProperty="ScaleY" To="0" Duration="00:00:0.15"></DoubleAnimation>
                                        <DoubleAnimation Storyboard.TargetName="shadowstf" Storyboard.TargetProperty="ScaleY" To="0" Duration="00:00:0.4"></DoubleAnimation>
                                    </Storyboard>
                                </BeginStoryboard>
                            </EventTrigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

Style

 <Button Tag="t">
             <Button.Content>
                 <TextBlock Text="Follow @bennettfeely" TextDecorations="Underline"></TextBlock>
             </Button.Content>
         </Button>

Button

源码下载:Wpf仿Twitter按钮.zip