WPF 無邊框button

 

項目中，有時會需要無邊框的Button，如果沒有特別的其他功能需要，我們可以更簡單的實現這一點：

<Button Content="myButton" Style="{StaticResource {x:Static ToolBar.ButtonStyleKey}}"/>

當然，上面的按鈕類似於ToolBar風格，移動到上面是藍色背景。

如果想進一步簡單修改，可以用以下方法，實現移動到按鈕上出現陰影，按下時內容縮小的功能：

 <Button Command="{Binding RefreshSQLCmd}" ToolTip="{DynamicResource Refresh}" SnapsToDevicePixels="True" Background="Transparent" Height="30" Width="30" BorderBrush="Transparent">
                        <Button.Template>
                            <ControlTemplate TargetType="{x:Type Button}">
                                <Grid>
                                    <Rectangle Height="30" Width="30">
                                        <Rectangle.Fill>
                                            <ImageBrush ImageSource="Images/refresh.ico"></ImageBrush>
                                        </Rectangle.Fill>
                                    </Rectangle>
                                    <ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" Content="{TemplateBinding Content}"></ContentPresenter>
                                </Grid>
                                <ControlTemplate.Triggers>
                                    <Trigger Property="IsMouseOver" Value="true">
                                        <Setter Property="Image.Effect">
                                            <Setter.Value>
                                                <DropShadowEffect BlurRadius="20" ShadowDepth="2" Color="#FF446FCB" Opacity="0.8"/>
                                            </Setter.Value>
                                        </Setter>
                                    </Trigger>
                                    <Trigger Property="IsPressed" Value="True">
                                        <Setter Property="RenderTransform">
                                            <Setter.Value>
                                                <ScaleTransform ScaleX="0.95" ScaleY="0.95"/>
                                            </Setter.Value>
                                        </Setter>
                                        <Setter Property="RenderTransformOrigin" Value=".5,.5"/>
                                    </Trigger>
                                </ControlTemplate.Triggers>
                            </ControlTemplate>
                        </Button.Template> 　
                    </Button>

使用圖片作為按鈕外觀時，如果需要IsEnable為false時變灰，可以通過自定義如下：

  <Style x:Key="myButton1" TargetType="Button">
        <Style.Resources>
            <Style TargetType="Image">
                <Style.Triggers>
                    <Trigger Property="IsEnabled" Value="False">
                        <Setter Property="Opacity" Value="0.5" />
                    </Trigger>
                </Style.Triggers>
            </Style>
        </Style.Resources>
    </Style>

如果想更復雜的，如下面的圓形按鈕，界面上的Button只需要Style綁定就可以了：

    <Style x:Key="ButtonStyle1" TargetType="Button">
        <Setter Property="Foreground" Value="Black"/>
        <!--修改模板屬性-->
        <Setter Property="Template">
            <Setter.Value>
                <!--控件模板-->
                <ControlTemplate TargetType="Button">
                    <!--背景色-->
                    <Border x:Name="back" Opacity="0.8" CornerRadius="3">
                        <Border.BitmapEffect>
                            <!--邊框為0的外發光效果-->
                            <OuterGlowBitmapEffect Opacity="0.7" GlowSize="0" GlowColor="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=(Button.Background).(SolidColorBrush.Color)}" />
                        </Border.BitmapEffect>
                        <Border.Background>
                            <LinearGradientBrush StartPoint="0,0" EndPoint="0,1.5">
                                <GradientBrush.GradientStops>
                                    <GradientStopCollection>
                                        <GradientStop Color="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=(Button.Background).(SolidColorBrush.Color)}" Offset="0"/>
                                        <GradientStop Color="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=(Button.Background).(SolidColorBrush.Color)}" Offset="0.4"/>
                                        <GradientStop Color="#FFF" Offset="1"/>
                                    </GradientStopCollection>
                                </GradientBrush.GradientStops>
                            </LinearGradientBrush>
                        </Border.Background>
                        <!--前景色及邊框-->
                        <Border x:Name="fore" BorderThickness="1" CornerRadius="3" BorderBrush="#5555">
                            <!--fore 實現按鈕的邊框和高亮反光效果，半透明的黑色1像素邊框，使邊框的色彩可以和背景色混合起來-->
                            <!--背景同樣采用的漸變筆刷，起始值和終止值的位置幾乎貼在一起，從而形成比較鮮明的反光度對比。-->
                            <Border.Background>
                                <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
                                    <GradientBrush.GradientStops>
                                        <GradientStopCollection>
                                            <GradientStop Color="#6FFF" Offset="0.5"/>
                                            <GradientStop Color="#1111" Offset="0.51"/>
                                        </GradientStopCollection>
                                    </GradientBrush.GradientStops>
                                </LinearGradientBrush>
                            </Border.Background>
                            <!--按鈕內容-->
                            <ContentPresenter x:Name="content" HorizontalAlignment="Center" VerticalAlignment="Center" Content="{TemplateBinding  Content}">
                                <!--一個不太明顯的陰影濾鏡以增強顯示效果-->
                                <ContentPresenter.BitmapEffect>
                                    <DropShadowBitmapEffect Color="#000" Direction="-90" ShadowDepth="2" Softness="0.1" Opacity="0.3" />
                                </ContentPresenter.BitmapEffect>
                            </ContentPresenter>
                        </Border>
                    </Border>
                    <!--觸發器-->
                    <ControlTemplate.Triggers>
                        <!--鼠標移入移出-->
                        <Trigger Property="IsMouseOver" Value="True">
                            <Trigger.EnterActions>
                                <BeginStoryboard>
                                    <Storyboard>
                                        <DoubleAnimation To="6" Duration="0:0:0.2" Storyboard.TargetName="back" Storyboard.TargetProperty="(Border.BitmapEffect).(OuterGlowBitmapEffect.GlowSize)" />
                                        <ColorAnimation To="#AFFF" BeginTime="0:0:0.2" Duration="0:0:0.2" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)" />
                                        <ColorAnimation To="#3FFF" BeginTime="0:0:0.2" Duration="0:0:0.2" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)" />
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.EnterActions>
                            <Trigger.ExitActions>
                                <BeginStoryboard>
                                    <Storyboard>
                                        <DoubleAnimation Duration="0:0:0.2" Storyboard.TargetName="back" Storyboard.TargetProperty="(Border.BitmapEffect).(OuterGlowBitmapEffect.GlowSize)" />
                                        <ColorAnimation Duration="0:0:0.2" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)" />
                                        <ColorAnimation Duration="0:0:0.2" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)" />
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.ExitActions>
                        </Trigger>
                        <!--按鈕按下彈起-->
                        <Trigger Property="IsPressed" Value="True">
                            <Trigger.EnterActions>
                                <BeginStoryboard>
                                    <Storyboard>
                                        <DoubleAnimation To="3" Duration="0:0:0.1" Storyboard.TargetName="back" Storyboard.TargetProperty="(Border.BitmapEffect).(OuterGlowBitmapEffect.GlowSize)" />
                                        <ColorAnimation To="#3AAA" Duration="0:0:0.1" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)" />
                                        <ColorAnimation To="#2111" Duration="0:0:0.1" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)" />
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.EnterActions>
                            <Trigger.ExitActions>
                                <BeginStoryboard>
                                    <Storyboard>
                                        <DoubleAnimation Duration="0:0:0.1" Storyboard.TargetName="back" Storyboard.TargetProperty="(Border.BitmapEffect).(OuterGlowBitmapEffect.GlowSize)" />
                                        <ColorAnimation Duration="0:0:0.1" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)" />
                                        <ColorAnimation Duration="0:0:0.1" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)" />
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.ExitActions>
                        </Trigger>
                        <!--按鈕失效-->
                        <!--當按鈕失效時，要改變很多東西，首先將文字顏色設為灰色，然后依次創建了改變外發光效果大小、改變內容陰影效果不透明度、
                        改變內容陰影效果角度、改變內容陰影效果顏色、改變按鈕邊框顏色、改變上部反光區域顏色、改變下部反光區域顏色的動畫。
                         這里將先前對內容應用的陰影效果徹底改變，使之產生凹陷的效果-->
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter Property="Foreground" Value="#B444"/>
                            <Trigger.EnterActions>
                                <BeginStoryboard>
                                    <Storyboard>
                                        <DoubleAnimation To="0" Duration="0:0:0.3" Storyboard.TargetName="back" Storyboard.TargetProperty="(Border.BitmapEffect).(OuterGlowBitmapEffect.GlowSize)" />
                                        <DoubleAnimation To="1" Duration="0:0:0.1" Storyboard.TargetName="content" Storyboard.TargetProperty="(ContentPresenter.BitmapEffect).(DropShadowBitmapEffect.Opacity)" />
                                        <DoubleAnimation To="-135" Duration="0:0:0.1" Storyboard.TargetName="content" Storyboard.TargetProperty="(ContentPresenter.BitmapEffect).(DropShadowBitmapEffect.Direction)" />
                                        <ColorAnimation To="#FFF" Duration="0:0:0.3" Storyboard.TargetName="content" Storyboard.TargetProperty="(ContentPresenter.BitmapEffect).(DropShadowBitmapEffect.Color)" />
                                        <ColorAnimation To="#D555" Duration="0:0:0.3" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.BorderBrush).(SolidColorBrush.Color)" />
                                        <ColorAnimation To="#CEEE" Duration="0:0:0.3" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)" />
                                        <ColorAnimation To="#CDDD" Duration="0:0:0.3" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)" />
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.EnterActions>
                            <Trigger.ExitActions>
                                <BeginStoryboard>
                                    <Storyboard>
                                        <DoubleAnimation Duration="0:0:0.1" Storyboard.TargetName="back" Storyboard.TargetProperty="(Border.BitmapEffect).(OuterGlowBitmapEffect.GlowSize)" />
                                        <DoubleAnimation Duration="0:0:0.1" Storyboard.TargetName="content" Storyboard.TargetProperty="(ContentPresenter.BitmapEffect).(DropShadowBitmapEffect.Opacity)" />
                                        <DoubleAnimation Duration="0:0:0.1" Storyboard.TargetName="content" Storyboard.TargetProperty="(ContentPresenter.BitmapEffect).(DropShadowBitmapEffect.Direction)" />
                                        <ColorAnimation Duration="0:0:0.1" Storyboard.TargetName="content" Storyboard.TargetProperty="(ContentPresenter.BitmapEffect).(DropShadowBitmapEffect.Color)" />
                                        <ColorAnimation Duration="0:0:0.1" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.BorderBrush).(SolidColorBrush.Color)" />
                                        <ColorAnimation Duration="0:0:0.1" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)" />
                                        <ColorAnimation Duration="0:0:0.1" Storyboard.TargetName="fore" Storyboard.TargetProperty="(Border.Background).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)" />
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.ExitActions>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

以上是整理了一下自己常用的方法和網絡上的一個實例，對自定義控件有一個參考。