[英]Override IsMouseOver and change background color based on logic in WPF Button
[英]After change wpf button IsMouseOver trigger color not work
這是我的按鈕代碼
public class MetroButton : Button
{
public static readonly DependencyProperty MoseOverBrushProperty;
public static readonly DependencyProperty PressedBrushProperty;
public MetroButton():base()
{
var resource = new ResourceDictionary
{
Source = new Uri("/Parking.Component.Ui;component/Styles/ButtonMetro.xaml",
UriKind.RelativeOrAbsolute)
};
Style = resource["ButtonMetro"] as Style;
//SetResourceReference(StyleProperty, Style);
}
static MetroButton()
{
MoseOverBrushProperty = DependencyProperty.Register("MoseOverBrush", typeof(Brush), typeof(MetroButton));
PressedBrushProperty = DependencyProperty.Register("PressedBrush", typeof(Brush), typeof(MetroButton));
}
public Brush MoseOverBrush
{
get { return (Brush)base.GetValue(MoseOverBrushProperty); }
set { base.SetValue(MoseOverBrushProperty, value); }
}
public Brush PressedBrush
{
get { return (Brush)base.GetValue(PressedBrushProperty); }
set { base.SetValue(PressedBrushProperty, value); }
}
}
我的按鈕使用這種樣式
<Style x:Key="ButtonMetro" TargetType="{ x:Type LochalUI:MetroButton}">
<Setter Property="Foreground" Value="White" />
<Setter Property="MoseOverBrush" Value="#FF3F62FD"/>
<Setter Property="PressedBrush" Value="#FF000099"/>
<Setter Property="Background" Value="#FF6B9AFF"/>
<Setter Property="FontSize" Value="15" />
<Setter Property="FontFamily" Value="B Yekan" />
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type LochalUI:MetroButton}">
<Border x:Name="border" CornerRadius="4" Background="{TemplateBinding Background}">
<Grid>
<ContentPresenter x:Name="MyContentPresenter" Content="{TemplateBinding Content}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="0,0,0,0" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="{Binding Path=MoseOverBrush , RelativeSource={RelativeSource Self}}" />
<Setter Property="Foreground" Value="Black" />
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" Value="{Binding Path=PressedBrush , RelativeSource={RelativeSource Self}}" />
<Setter Property="Foreground" Value="White" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
但是當我為按鈕背景添加顏色時,問題就出現了,如下代碼所示:
<UI:MetroButton HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="132" Height="107" Background="#FF09CD00" >
<Grid>
<Label Content="تنظیمات" HorizontalAlignment="Center" VerticalAlignment="Center" Padding="5,5,5,12" Foreground="White" Margin="5"/>
</Grid>
</UI:MetroButton>
IsMouseOver 轉換器顏色和 IsPressed 觸發器不起作用。
(我不想在我的 setter 中使用靜態資源)更改其他屬性沒有效果,只是更改背景會導致這個問題。
我發現答案問題在 2 個地方:
當我們使用觸發器時的第一個
<ControlTemplate.Triggers/>
您確定在當前對象上設置了 setter set 屬性
而第二個是在我們有變化的綁定中
Value="{Binding Path=MoseOverBrush , RelativeSource={RelativeSource Self}}"
到
Value="{Binding Path=MoseOverBrush , RelativeSource={RelativeSource TemplatedParent}}"
因為MoseOverBrush
是父屬性而不是 ControlTemplate 屬性
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