我想创建一个按钮控件，其中包含一个Path元素作为其内容 - 如果愿意，可以使用IconButton。
此按钮应满足两个条件：
1。 Path元素的笔触和填充颜色应该可供VisualStateManager操作。
2。 Path元素的数据字符串（定义它的形状）可以在代码或XAML中设置，这样我就可以创建几个这样的按钮，而无需为每个按钮创建一个新的自定义控件。
我能看到的唯一方法就是不涉及任何XAML。也就是说，在后面的代码中设置所有可视状态和动画，并逐点生成几何对象（并且无法在Path元素上使用方便的数据字符串属性）。
有更简单的方法吗？
修改
因此，我遇到的一个限制是Silverlight不支持PathGeometry中路径表达式的迷你语言，仅支持Path。我在其中一些图标中有一些详细的几何图形，我真的不想把我用Illustrator插件生成的方便的字符串（很确定它是this one）并将它们变成了单独的线段和曲线。
答案 0 :(得分：1)
尼斯克里斯。如果要将路径存储为资源，可以稍微修改一下：
首先将依赖项属性更改为Path类型：
/// <summary>
/// Button that contains an icon, where the icon is drawn from a path.
/// </summary>
public class IconButton : Button
{
/// <summary>
/// The path data that draws the icon.
/// </summary>
public static readonly DependencyProperty IconPathProperty =
DependencyProperty.Register("IconPath", typeof(Path), typeof(IconButton), new PropertyMetadata(default(Path)));
/// <summary>
/// Depencendy property backer.
/// </summary>
public Path IconPath
{
get { return (Path)GetValue(IconPathProperty); }
set { SetValue(IconPathProperty, value); }
}
}
接下来，这是IconButton控件模板。
<!-- Icon Button Control Template -->
<ControlTemplate x:Key="IconButtonControlTemplate" TargetType="{x:Type usercontrols:IconButton}">
<Grid x:Name="Grid">
<Border SnapsToDevicePixels="True" x:Name="Border" CornerRadius="1" BorderThickness="1" BorderBrush="{StaticResource ButtonBorderBrush}">
<Path x:Name="Icon" Height="16" Width="16" Stretch="Fill"
Data="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=IconPath.Data}"
UseLayoutRounding="False" Grid.Column="1" VerticalAlignment="Center" Margin="0">
<Path.Fill>
<SolidColorBrush x:Name="IconColor" Color="{Binding Color, Source={StaticResource ButtonIconBrush}}" />
</Path.Fill>
</Path>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsKeyboardFocused" Value="true">
<Setter Property="BorderBrush" Value="{StaticResource ButtonBorderBrush}" TargetName="Border"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" Value="{StaticResource ButtonBackgroundMouseOverBrush}" TargetName="Border"/>
<Setter Property="BorderBrush" Value="{StaticResource ButtonBorderMouseOverBrush}" TargetName="Border"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" Value="{StaticResource ButtonBackgroundPressedBrush}" TargetName="Border"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Fill" Value="{StaticResource DisabledIconBrush}" TargetName="Icon"/>
<Setter Property="Background" Value="{StaticResource ButtonBackgroundDisabledBrush}" TargetName="Border"/>
<Setter Property="BorderBrush" Value="{StaticResource ButtonBorderDisabledBrush}" TargetName="Border"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
...这里是使用此模板的IconButton样式，并添加了一些默认值：
<!-- Icon Button Style -->
<Style TargetType="{x:Type usercontrols:IconButton}">
<Setter Property="FocusVisualStyle" Value="{DynamicResource SimpleButtonFocusVisual}"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Top"/>
<Setter Property="Height" Value="26"/>
<Setter Property="Width" Value="26"/>
<Setter Property="Margin" Value="5"/>
<Setter Property="Content" Value="Button"/>
<Setter Property="Template" Value="{StaticResource IconButtonControlTemplate}"/>
</Style>
现在您可以继续创建图标并将其保存在资源文件中：
<!-- Undo Icon -->
<Path x:Key="UndoIcon" Stretch="Fill" Data="F1 M 87.7743,80.7396L 87.5215,75.9539L 89.8692,74.2202C 89.9775,75.0329 90.0859,76.586 90.0859,76.5318C 92.9302,73.7417 97.5369,72.9755 100.208,76.2158C 102.019,78.413 102.258,81.2543 99.7657,83.9361C 97.2735,86.6179 92.6142,90.1124 92.6142,90.1124L 90.3748,87.6744L 97.3096,81.769C 97.3096,81.769 99.1516,79.9992 97.8514,78.3558C 96.2374,76.316 94.384,77.2542 92.1447,78.8795C 92.1176,78.9608 93.3998,79.1143 94.3118,79.2768L 92.4336,81.4439L 87.7743,80.7396 Z "/>
<!-- Filter Icon -->
<Path x:Key="FilterIcon" Stretch="Fill" Data="F1 M 6,16L 10,16L 10.0208,10L 16,3L 16,2.86102e-006L 0,9.53674e-007L 0,3L 6,10L 6,16 Z "/>
最后，创建按钮：
<usercontrols:IconButton IconPath="{StaticResource UndoIcon}"></usercontrols:IconButton>
答案 1 :(得分：0)
路径Data属性只是一个几何。当你说“几个这样的按钮”时，人们会假设有一些有限数量的按钮因Icon而异。
将每个“Icon”存储为ResourceGeictionary中的PathGeomerty，并将该ResourceDictionary作为app.xaml中的合并字典引用。
现在您可以简单地将几何分配到Path shap Data属性中。
答案 2 :(得分：0)
对于上面问题的第二部分，这里有一个kludge，它非常适合将字符串Path数据存储为资源并从代码中访问它们。
对于问题的第一部分，我刚刚在代码中创建了所有动画，将它们应用于鼠标事件，完全摆脱了XAML页面。
答案 3 :(得分：0)
这艘船可能早已航行，但我需要一些非常相似的东西，并且能够通过继承Button来推销我自己：
public class PathButton : Button
{
public static readonly DependencyProperty PathDataProperty =
DependencyProperty.Register("PathData", typeof(Geometry), typeof(PathButton), new PropertyMetadata(default(Geometry)));
public Geometry PathData
{
get { return (Geometry) GetValue(PathDataProperty); }
set { SetValue(PathDataProperty, value); }
}
}
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.1"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Duration="0" To="{StaticResource BlueColor}" Storyboard.TargetProperty="Color" Storyboard.TargetName="BackgroundRectangleColor" />
<ColorAnimation Duration="0" To="{StaticResource WhiteColor}" Storyboard.TargetProperty="Color" Storyboard.TargetName="IconColor" />
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed"/>
<VisualState x:Name="Disabled"/>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Unfocused"/>
<VisualState x:Name="Focused"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid.Projection>
<PlaneProjection/>
</Grid.Projection>
<Rectangle x:Name="BackgroundRectangle" >
<Rectangle.Fill>
<SolidColorBrush x:Name="BackgroundRectangleColor" Color="{StaticResource GrayColor}" />
</Rectangle.Fill>
</Rectangle>
<Path x:Name="Icon" Stretch="Fill"
Data="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=PathData}"
UseLayoutRounding="False" Grid.Column="1" Width="24" Height="24" VerticalAlignment="Center" Margin="0">
<Path.Fill>
<SolidColorBrush x:Name="IconColor" Color="{StaticResource LightGrayColor}" />
</Path.Fill>
</Path>
<TextBlock x:Name="Text" HorizontalAlignment="Center" TextWrapping="Wrap" Text="{TemplateBinding Content}" FontSize="9.333" FontFamily="Segoe UI Light" Foreground="{StaticResource LightGray}" Height="11" Margin="0,0,0,3" VerticalAlignment="Bottom"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
使用示例：
<Controls:PathButton Content="Options" PathData="F1M50.6954,32.1146C50.7057,31.1041,50.6068,30.1107,50.4583,29.1459L54.5052,25.9193C53.4636,22.0377,51.4583,18.5612,48.7409,15.7604L43.9063,17.5885C42.3776,16.3229,40.6407,15.3099,38.7552,14.5814L37.9857,9.47656C36.1237,8.98181 34.1719,8.68225 32.1511,8.66663 30.1302,8.65625 28.1771,8.92578 26.2995,9.39844L25.4714,14.4948C23.5794,15.2057,21.8229,16.1901,20.2813,17.4401L15.4675,15.5521C12.7201,18.3138,10.6706,21.7631,9.57556,25.6328L13.582,28.9088C13.4193,29.875 13.3164,30.8658 13.3047,31.8776 13.2969,32.8984 13.3945,33.8854 13.5469,34.8588L9.49353,38.0807C10.5417,41.9584,12.5469,45.4401,15.2604,48.2383L20.0938,46.4127C21.6224,47.6744,23.3659,48.6875,25.2513,49.4193L26.0091,54.5234C27.8802,55.0209 29.8333,55.3177 31.8503,55.3334 33.8698,55.3385 35.8243,55.0729 37.6979,54.6041L38.5352,49.5C40.4219,48.7916,42.1784,47.806,43.7253,46.5664L48.53,48.4531C51.2813,45.6836,53.3268,42.233,54.4245,38.3685L50.418,35.0963C50.5833,34.1224,50.6862,33.1354,50.6954,32.1146 M31.9362,41.6615C26.6068,41.6302 22.3073,37.2734 22.3411,31.9375 22.3776,26.6002 26.7266,22.3008 32.0651,22.3359 37.4011,22.3698 41.7005,26.7252 41.6653,32.0625 41.629,37.4023 37.2786,41.6979 31.9362,41.6615"
Style="{StaticResource PathButtonStyle1}" Grid.RowSpan="2" Grid.Column="1" />