【WPF学习】第五十九章 理解控件模板

<ControlTemplate ...>
    <mwt:ButtonChrome Name="Chrome" ...>
        <ContentPresenter Content="{TemplateBinding ContentControl.Content}" ... />
    <mwt:ButtonChrome>
    <ControlTemplate.Triggers>
    ...
    </ControlTemplate.Triggers>
</ControlTemplate>

<Trigger Property="UIElement.IsKeyboardFocused“>
    <Setter Property="mwt:ButtonChrome.RenderDefaulted TargetName="Chrome">
        <Setter.Value>
            <s:Boolean>True</s:Boolean>
        </Setter.Value>
    </Setter>
    <Trigger.Value>
        <s:Boolean>True</s:Boolean>
    </Trigger.Value>
</Trigger>
<Trigger Property="UIElement.IsChecked“>
    <Setter Property="mwt:ButtonChrome.RenderDefaulted TargetName="Chrome">
        <Setter.Value>
            <s:Boolean>True</s:Boolean>
        </Setter.Value>
    </Setter>
    <Trigger.Value>
        <s:Boolean>True</s:Boolean>
    </Trigger.Value>
</Trigger>

<Trigger Property="UIElement.IsEnabled">
    <Setter Property="TextElement.Foreground">
        <Setter.Value>
            <SolidColorBrush>#FFADADAD</SolidColorBrush>
        </Setter.Value>
    </Setter>
    <Trigger.Value>
        <s:Boolean>False</s:Boolean>
    </Trigger.Value>
</Trigger>

<ControlTemplate TargetType="{x:Type ResizeGrip}" ...>
    <Grid Background="{TemplateBinding Panel.Background}" SnapsToDevicePixels="True">
        <Path Margin="0,0,2,2" Data="M9,0L11,0 11,11 0,11 0,9 3,9 3,6 6,6 6,3 9,3z" HorizontalAlignment="Right" VerticalAlignment="Bottom">
            <Path.Fill>
                <DrawingBrush ViewboxUnits="Absolute" TileMode="Tile" Viewbox="0,0,3,3" Viewport="0,0,3,3" ViewportUnits="Absolute">
                    <DrawingBrush.Drawing>
                        <DrawingGroup>
                            <DrawingGroup.Children>
                                <GeometryDrawing Geometry="M0,0L2,0 2,2 0,2z">
                                    <GeometryDrawing.Brush>
                                        <LinearGradientBrush EndPoint="1,0.75" StartPoint="0,0.25">
                                            <LinearGradientBrush.GradientStops>
                                                <GradientStop offset="0.3" Color="#FFFFFFFF"/>
                                                <GradientStop offset="0.75" Color="#FFBBC5D7" />
                                                <GradientStop offset="1" Color="#FF6D83A9" />
                                             </LinearGradientBrush.GradientStops>
                                        </LinearGradientBrush>
                                    <GeometryDrawing.Brush>
                                </GeometryDrawing>
                            </DrawingGroup.Children>
                        </DrawingGroup>
                    </DrawingBrush.Drawing>
                </DrawingBrush>
            </Path.Fill>
        </Path>
    </Grid>
</ControlTemplate>

private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            Type controlType = typeof(Control);
            List<Type> derivedTypes = new List<Type>();

            // Search all the types in the assembly where the Control class is defined.
            Assembly assembly = Assembly.GetAssembly(typeof(Control));
            foreach (Type type in assembly.GetTypes())
            {
                // Only add a type of the list if it‘s a Control, a concrete class, and public.
                if (type.IsSubclassOf(controlType) && !type.IsAbstract && type.IsPublic)
                {
                    derivedTypes.Add(type);
                }
            }

            // Sort the types by type name.
            derivedTypes.Sort(new TypeComparer());

            // Show the list of types.
            lstType.ItemsSource = derivedTypes;
        }

private void lstTypes_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            try
            {
                // Get the selected type.
                Type type = (Type)lstType.SelectedItem;

                // Instantiate the type.
                ConstructorInfo info = type.GetConstructor(System.Type.EmptyTypes);
                Control control = (Control)info.Invoke(null);

                Window win = control as Window;
                if (win != null)
                {
                    // Create the window (but keep it minimized).
                    win.WindowState = System.Windows.WindowState.Minimized;
                    win.ShowInTaskbar = false;
                    win.Show();
                }
                else
                {
                    // Add it to the grid (but keep it hidden).
                    control.Visibility = Visibility.Collapsed;
                    grid.Children.Add(control);
                }

                // Get the template.
                ControlTemplate template = control.Template;

                // Get the XAML for the template.
                XmlWriterSettings settings = new XmlWriterSettings();
                settings.Indent = true;
                StringBuilder sb = new StringBuilder();
                XmlWriter writer = XmlWriter.Create(sb, settings);
                System.Windows.Markup.XamlWriter.Save(template, writer);

                // Display the template.
                txtTemplate.Text = sb.ToString();

                // Remove the control from the grid.
                if (win != null)
                {
                    win.Close();
                }
                else
                {
                    grid.Children.Remove(control);
                }
            }
            catch (Exception err)
            {
                txtTemplate.Text = "<< Error generating template:" + err.Message + ">>"; ;
            }
        }