XamRibbon中Image可动态旋转的LabelTool

LabelTool有一个SmallImage属性，是一个ImageSource类型，试图去旋转这个ImageSource没有成功。

有个类TransformedBitmap可以用来旋转ImageSource，但它只支持90度旋转，所以不能用。

于是通过更改它的Template实现。

xaml:

<Window x:Class="RotatingImageInLabelTool.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" xmlns:local="clr-namespace:RotatingImageInLabelTool" xmlns:igRibbon="http://infragistics.com/Ribbon"
        >
    <Grid>
        <igRibbon:XamRibbon Height="147" Margin="8,12,12,0" Name="xamRibbon1" VerticalAlignment="Top">
            <igRibbon:XamRibbon.CommandBindings>
                <CommandBinding Command="{x:Static local:MainWindow.StartCommand}" Executed="StartCommand_Executed" CanExecute="StartCommand_CanExecute"/>
                <CommandBinding Command="{x:Static local:MainWindow.StopCommand}" Executed="StopCommand_Executed" CanExecute="StopCommand_CanExecute"/>
            </igRibbon:XamRibbon.CommandBindings>
            <igRibbon:RibbonTabItem Header="Rotating Image">
                <igRibbon:RibbonGroup Width="250">
                    <igRibbon:LabelTool x:Name="lt" Caption="This is a LabelTool with rotatable image">
                        <igRibbon:LabelTool.Template>
                            <ControlTemplate>
                                <StackPanel Orientation="Horizontal">
                                    <local:RotatingImage x:Name="PART_IMAGE" Source="Icon.png" Width="16" Height="16">
                                        <local:RotatingImage.RenderTransform>
                                            <RotateTransform Angle="0" CenterX="8" CenterY="8"></RotateTransform>
                                        </local:RotatingImage.RenderTransform>
                                        <local:RotatingImage.Style>
                                            <Style>
                                                <Style.Triggers>
                                                    <EventTrigger RoutedEvent="local:RotatingImage.StartRotating">
                                                        <EventTrigger.Actions>
                                                            <BeginStoryboard x:Name="rotatingStoryboard">
                                                                <Storyboard>
                                                                    <DoubleAnimation Storyboard.TargetProperty="(local:RotatingImage.RenderTransform).(RotateTransform.Angle)" From="0" To="360" Duration="0:0:0.5" RepeatBehavior="Forever"/>
                                                                </Storyboard>
                                                            </BeginStoryboard>
                                                        </EventTrigger.Actions>
                                                    </EventTrigger>
                                                    <EventTrigger RoutedEvent="local:RotatingImage.StopRotating">
                                                        <EventTrigger.Actions>
                                                            <StopStoryboard BeginStoryboardName="rotatingStoryboard"/>
                                                        </EventTrigger.Actions>
                                                    </EventTrigger>
                                                </Style.Triggers>
                                            </Style>
                                        </local:RotatingImage.Style>
                                    </local:RotatingImage>
                                    <Label Content="{TemplateBinding igRibbon:LabelTool.Caption}"
                                           Foreground="{TemplateBinding igRibbon:LabelTool.Foreground}"
                                           />
                                </StackPanel>
                            </ControlTemplate>
                        </igRibbon:LabelTool.Template>
                    </igRibbon:LabelTool>
                </igRibbon:RibbonGroup>
                <igRibbon:RibbonGroup>
                    <igRibbon:ButtonTool Command="{x:Static local:MainWindow.StartCommand}">Start rotating</igRibbon:ButtonTool>
                    <igRibbon:ButtonTool Command="{x:Static local:MainWindow.StopCommand}">Stop rotating</igRibbon:ButtonTool>
                </igRibbon:RibbonGroup>
            </igRibbon:RibbonTabItem>
        </igRibbon:XamRibbon>
    </Grid>
</Window>

code:

namespace RotatingImageInLabelTool
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private bool _isRotating;

        public MainWindow()
        {
            InitializeComponent();
        }

        public static readonly RoutedCommand StartCommand = new RoutedCommand();
        public static readonly RoutedCommand StopCommand = new RoutedCommand();

        private void StartCommand_Executed(object sender, ExecutedRoutedEventArgs e)
        {
            var image = lt.Template.FindName("PART_IMAGE", lt) as RotatingImage;
            if (image != null)
                image.RaiseEvent(new RoutedEventArgs(RotatingImage.StartRotatingEvent));
            _isRotating = true;
        }

        private void StartCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            e.CanExecute = !_isRotating;
        }

        private void StopCommand_Executed(object sender, ExecutedRoutedEventArgs e)
        {
            var image = lt.Template.FindName("PART_IMAGE", lt) as RotatingImage;
            if (image != null)
                image.RaiseEvent(new RoutedEventArgs(RotatingImage.StopRotatingEvent));
            _isRotating = false;
        }

        private void StopCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            e.CanExecute = _isRotating;
        }
    }

    public class RotatingImage : Image
    {
        public static readonly RoutedEvent StartRotatingEvent = EventManager.RegisterRoutedEvent("StartRotating", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(RotatingImage));
        public event RoutedEventHandler StartRotating
        {
            add { this.AddHandler(StartRotatingEvent, value); }
            remove { this.RemoveHandler(StartRotatingEvent, value); }
        }

        public static readonly RoutedEvent StopRotatingEvent = EventManager.RegisterRoutedEvent("StopRotating", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(RotatingImage));
        public event RoutedEventHandler StopRotating
        {
            add { this.AddHandler(StopRotatingEvent, value); }
            remove { this.RemoveHandler(StopRotatingEvent, value); }
        }
    }
}

示例：https://files.cnblogs.com/bear831204/RotatingImageInLabelTool.zip

参考文章：http://www.galasoft.ch/mydotnet/articles/article-2006102701.aspx