Browse Source
git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/wpfdesigner@5873 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61pull/1/head
Kumar Devvrat
16 years ago
4 changed files with 311 additions and 0 deletions
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// <file>
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// <copyright see="prj:///doc/copyright.txt"/>
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// <license see="prj:///doc/license.txt"/>
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// <author name="Kumar Devvrat"/>
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// <version>$Revision: $</version>
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// </file>
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using System; |
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using System.Diagnostics; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Text; |
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using System.Windows; |
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using System.Windows.Controls; |
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using System.Windows.Data; |
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using System.Windows.Media; |
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using ICSharpCode.WpfDesign.Adorners; |
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namespace ICSharpCode.WpfDesign.Designer.Controls |
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{ |
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/// <summary>
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/// Adorner that displays the margin of a control in a Grid.
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/// </summary>
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class MarginHandle : Control |
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{ |
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static MarginHandle() |
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{ |
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DefaultStyleKeyProperty.OverrideMetadata(typeof(MarginHandle), new FrameworkPropertyMetadata(typeof(MarginHandle))); |
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} |
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/// <summary>
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/// Dependency property for <see cref="HandleLength"/>.
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/// </summary>
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public static readonly DependencyProperty HandleLengthProperty |
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= DependencyProperty.Register("HandleLength", typeof(double), typeof(MarginHandle), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender, new PropertyChangedCallback(OnHandleLengthChanged))); |
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/// <summary>
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/// Gets/Sets the length of Margin Handle.
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/// </summary>
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public double HandleLength{ |
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get { return (double)GetValue(HandleLengthProperty); } |
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set { SetValue(HandleLengthProperty, value); } |
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} |
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readonly Grid grid; |
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readonly DesignItem adornedControlItem; |
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readonly AdornerPanel adornerPanel; |
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readonly HandleOrientation orientation; |
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readonly FrameworkElement adornedControl; |
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/// <summary> This grid contains the handle line and the endarrow.</summary>
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Grid lineArrow; |
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MarginStub marginStub; |
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/// <summary>
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/// Gets/Sets tha angle by which handle rotates.
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/// </summary>
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public double Angle { get; set; } |
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/// <summary>
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/// Decides the visiblity of handle/stub when <see cref="HandleLength"/> changes
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/// </summary>
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/// <param name="d"></param>
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/// <param name="e"></param>
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public static void OnHandleLengthChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) |
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{ |
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MarginHandle mar=(MarginHandle)d; |
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mar.DecideVisiblity((double)e.NewValue); |
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} |
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public MarginHandle(DesignItem adornedControlItem, AdornerPanel adornerPanel, HandleOrientation orientation) |
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{ |
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Debug.Assert(adornedControlItem!=null); |
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this.adornedControlItem = adornedControlItem; |
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this.adornerPanel = adornerPanel; |
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this.orientation = orientation; |
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Angle = (double)orientation; |
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grid=(Grid)adornedControlItem.Parent.Component; |
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adornedControl=(FrameworkElement)adornedControlItem.Component; |
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marginStub = new MarginStub(this); |
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BindAndPlaceHandle(); |
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} |
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/// <summary>
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/// Binds the <see cref="HandleLength"/> to the margin and place the handles.
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/// </summary>
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void BindAndPlaceHandle() |
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{ |
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if (!adornerPanel.Children.Contains(this)) |
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adornerPanel.Children.Add(this); |
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if (!adornerPanel.Children.Contains(marginStub)) |
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adornerPanel.Children.Add(marginStub); |
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RelativePlacement placement=new RelativePlacement(); |
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Binding binding = new Binding(); |
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binding.Source = adornedControl; |
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switch (orientation) |
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{ |
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case HandleOrientation.Left: |
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binding.Path = new PropertyPath("Margin.Left"); |
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placement = new RelativePlacement(HorizontalAlignment.Left, VerticalAlignment.Center); |
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break; |
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case HandleOrientation.Top: |
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binding.Path = new PropertyPath("Margin.Top"); |
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placement = new RelativePlacement(HorizontalAlignment.Center, VerticalAlignment.Top); |
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break; |
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case HandleOrientation.Right: |
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binding.Path = new PropertyPath("Margin.Right"); |
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placement = new RelativePlacement(HorizontalAlignment.Right, VerticalAlignment.Center); |
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break; |
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case HandleOrientation.Bottom: |
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binding.Path = new PropertyPath("Margin.Bottom"); |
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placement = new RelativePlacement(HorizontalAlignment.Center, VerticalAlignment.Bottom); |
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break; |
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} |
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binding.Mode = BindingMode.TwoWay; |
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SetBinding(HandleLengthProperty, binding); |
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AdornerPanel.SetPlacement(this, placement); |
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AdornerPanel.SetPlacement(marginStub, placement); |
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DecideVisiblity(this.HandleLength); |
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} |
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/// <summary>
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/// Decides the visibllity of Handle or stub,whichever is set and hides the line-endarrow if the control is near the Grid or goes out of it.
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/// </summary>
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/// <param name="handleLength"></param>
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public void DecideVisiblity(double handleLength) |
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{ |
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marginStub.Visibility = handleLength == 0.0 ? Visibility.Visible : Visibility.Hidden; |
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this.Visibility = handleLength != 0.0 ? Visibility.Visible : Visibility.Hidden; |
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if (this.lineArrow != null){ |
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lineArrow.Visibility = handleLength < 20 ? Visibility.Hidden : Visibility.Visible; |
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} |
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} |
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public override void OnApplyTemplate() |
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{ |
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base.OnApplyTemplate(); |
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lineArrow = new Grid(); |
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lineArrow = (Grid)Template.FindName("lineArrow", this) as Grid; |
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Debug.Assert(lineArrow != null); |
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} |
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} |
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/// <summary>
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/// Display a stub indicating that the margin is not set.
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/// </summary>
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class MarginStub : Control |
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{ |
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MarginHandle marginHandle; |
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static MarginStub() |
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{ |
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DefaultStyleKeyProperty.OverrideMetadata(typeof(MarginStub), new FrameworkPropertyMetadata(typeof(MarginStub))); |
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} |
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public MarginStub(MarginHandle marginHandle) |
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{ |
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this.marginHandle = marginHandle; |
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} |
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protected override void OnMouseLeftButtonDown(System.Windows.Input.MouseButtonEventArgs e) |
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{ |
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base.OnMouseLeftButtonDown(e); |
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marginHandle.DecideVisiblity(marginHandle.HandleLength); |
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} |
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} |
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/// <summary>
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/// Specifies the Handle orientation
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/// </summary>
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public enum HandleOrientation |
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{ |
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/* Rotation of the handle is done with respect to right orientation and in clockwise direction*/ |
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/// <summary>
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/// Indicates that the margin handle is left-oriented and rotated 180 degrees with respect to <see cref="Right"/>.
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/// </summary>
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Left = 180, |
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/// <summary>
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/// Indicates that the margin handle is top-oriented and rotated 270 degrees with respect to <see cref="Right"/>.
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/// </summary>
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Top = 270, |
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/// <summary>
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/// Indicates that the margin handle is right.
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/// </summary>
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Right = 0, |
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/// <summary>
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/// Indicates that the margin handle is left-oriented and rotated 180 degrees with respect to <see cref="Right"/>.
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/// </summary>
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Bottom = 90 |
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} |
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} |
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@ -0,0 +1,48 @@ |
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// <file>
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// <copyright see="prj:///doc/copyright.txt"/>
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// <license see="prj:///doc/license.txt"/>
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// <author name="Kumar Devvrat"/>
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// <version>$Revision: $</version>
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// </file>
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using System; |
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using System.Windows; |
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using System.Windows.Controls; |
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using System.Windows.Media; |
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using ICSharpCode.WpfDesign.Adorners; |
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using ICSharpCode.WpfDesign.Designer.Controls; |
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using ICSharpCode.WpfDesign.Extensions; |
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namespace ICSharpCode.WpfDesign.Designer.Extensions |
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{ |
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[ExtensionFor(typeof(FrameworkElement))] |
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[ExtensionServer(typeof(PrimarySelectionExtensionServer))] |
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public class MarginHandleExtension : AdornerProvider |
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{ |
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MarginHandle leftHandle, topHandle, rightHandle, bottomHandle; |
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protected override void OnInitialized() |
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{ |
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base.OnInitialized(); |
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if (this.ExtendedItem.Parent != null) |
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{ |
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if (this.ExtendedItem.Parent.ComponentType == typeof(Grid)){ |
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FrameworkElement extendedControl = (FrameworkElement)this.ExtendedItem.Component; |
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AdornerPanel adornerPanel = new AdornerPanel(); |
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// If the Element is rotated/skewed in the grid, then margin handles do not appear
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if (extendedControl.LayoutTransform.Value == Matrix.Identity && extendedControl.RenderTransform.Value == Matrix.Identity) |
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{ |
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MarginHandle leftHandle = new MarginHandle(this.ExtendedItem, adornerPanel, HandleOrientation.Left); |
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MarginHandle topHandle = new MarginHandle(this.ExtendedItem, adornerPanel, HandleOrientation.Top); |
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MarginHandle rightHandle = new MarginHandle(this.ExtendedItem, adornerPanel, HandleOrientation.Right); |
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MarginHandle bottomHandle = new MarginHandle(this.ExtendedItem, adornerPanel, HandleOrientation.Bottom); |
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} |
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if (adornerPanel != null) |
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this.Adorners.Add(adornerPanel); |
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} |
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} |
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} |
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} |
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} |
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