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-> When Positioning in a Canvas, show a Handle like the one Showed when Positioning in a Gridpull/52/head
jkuehner
12 years ago
5 changed files with 343 additions and 2 deletions
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
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using System; |
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using System.Windows.Input; |
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using System.Globalization; |
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using System.ComponentModel; |
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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 System.Windows.Media.Media3D; |
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using System.Windows.Shapes; |
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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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public class CanvasPositionHandle : MarginHandle |
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{ |
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static CanvasPositionHandle() |
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{ |
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DefaultStyleKeyProperty.OverrideMetadata(typeof(CanvasPositionHandle), new FrameworkPropertyMetadata(typeof(CanvasPositionHandle))); |
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HandleLengthOffset=2; |
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} |
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private Path line1; |
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private Path line2; |
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public override void OnApplyTemplate() |
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{ |
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line1 = GetTemplateChild("line1") as Path; |
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line2 = GetTemplateChild("line2") as Path; |
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base.OnApplyTemplate(); |
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} |
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readonly Canvas canvas; |
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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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private DependencyPropertyDescriptor leftDescriptor; |
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private DependencyPropertyDescriptor rightDescriptor; |
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private DependencyPropertyDescriptor topDescriptor; |
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private DependencyPropertyDescriptor bottomDescriptor; |
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private DependencyPropertyDescriptor widthDescriptor; |
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private DependencyPropertyDescriptor heightDescriptor; |
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public CanvasPositionHandle(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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canvas = (Canvas) adornedControlItem.Parent.Component; |
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adornedControl = (FrameworkElement) adornedControlItem.Component; |
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Stub = new MarginStub(this); |
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ShouldBeVisible = true; |
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leftDescriptor = DependencyPropertyDescriptor.FromProperty(Canvas.LeftProperty, |
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adornedControlItem.Component.GetType()); |
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leftDescriptor.AddValueChanged(adornedControl, OnPropertyChanged); |
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rightDescriptor = DependencyPropertyDescriptor.FromProperty(Canvas.RightProperty, |
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adornedControlItem.Component.GetType()); |
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rightDescriptor.AddValueChanged(adornedControl, OnPropertyChanged); |
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topDescriptor = DependencyPropertyDescriptor.FromProperty(Canvas.TopProperty, |
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adornedControlItem.Component.GetType()); |
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topDescriptor.AddValueChanged(adornedControl, OnPropertyChanged); |
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bottomDescriptor = DependencyPropertyDescriptor.FromProperty(Canvas.BottomProperty, |
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adornedControlItem.Component.GetType()); |
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bottomDescriptor.AddValueChanged(adornedControl, OnPropertyChanged); |
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widthDescriptor = DependencyPropertyDescriptor.FromProperty(Control.WidthProperty, |
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adornedControlItem.Component.GetType()); |
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widthDescriptor.AddValueChanged(adornedControl, OnPropertyChanged); |
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heightDescriptor = DependencyPropertyDescriptor.FromProperty(Control.WidthProperty, |
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adornedControlItem.Component.GetType()); |
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heightDescriptor.AddValueChanged(adornedControl, OnPropertyChanged); |
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BindAndPlaceHandle(); |
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} |
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void OnPropertyChanged(object sender, EventArgs e) |
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{ |
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BindAndPlaceHandle(); |
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} |
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/// <summary>
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/// Gets/Sets the angle by which the Canvas display has to be rotated
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/// </summary>
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public override double TextTransform |
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{ |
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get |
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{ |
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if ((double)orientation == 90 || (double)orientation == 180) |
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return 180; |
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if ((double)orientation == 270) |
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return 0; |
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return (double)orientation; |
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} |
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set { } |
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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(Stub)) |
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adornerPanel.Children.Add(Stub); |
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RelativePlacement placement=new RelativePlacement(); |
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switch (orientation) |
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{ |
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case HandleOrientation.Left: |
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{ |
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var wr = (double) leftDescriptor.GetValue(adornedControl); |
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if (double.IsNaN(wr)) |
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{ |
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wr = (double) rightDescriptor.GetValue(adornedControl); |
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wr = canvas.ActualWidth - (adornedControl.ActualWidth + wr); |
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} |
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else |
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{ |
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if (line1 != null) |
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{ |
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line1.StrokeDashArray.Clear(); |
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line2.StrokeDashArray.Clear(); |
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} |
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} |
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this.HandleLength = wr; |
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placement = new RelativePlacement(HorizontalAlignment.Left, VerticalAlignment.Center); |
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placement.XOffset = -HandleLengthOffset; |
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break; |
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} |
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case HandleOrientation.Top: |
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{ |
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var wr = (double)topDescriptor.GetValue(adornedControl); |
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if (double.IsNaN(wr)) |
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{ |
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wr = (double)bottomDescriptor.GetValue(adornedControl); |
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wr = canvas.ActualHeight - (adornedControl.ActualHeight + wr); |
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} |
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else |
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{ |
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if (line1 != null) |
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{ |
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line1.StrokeDashArray.Clear(); |
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line2.StrokeDashArray.Clear(); |
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} |
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} |
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this.HandleLength = wr; |
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placement = new RelativePlacement(HorizontalAlignment.Center, VerticalAlignment.Top); |
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placement.YOffset = -HandleLengthOffset; |
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break; |
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} |
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case HandleOrientation.Right: |
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{ |
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var wr = (double) rightDescriptor.GetValue(adornedControl); |
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if (double.IsNaN(wr)) |
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{ |
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wr = (double) leftDescriptor.GetValue(adornedControl); |
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wr = canvas.ActualWidth - (adornedControl.ActualWidth + wr); |
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} |
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else |
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{ |
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if (line1 != null) |
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{ |
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line1.StrokeDashArray.Clear(); |
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line2.StrokeDashArray.Clear(); |
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} |
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} |
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this.HandleLength = wr; |
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placement = new RelativePlacement(HorizontalAlignment.Right, VerticalAlignment.Center); |
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placement.XOffset = HandleLengthOffset; |
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break; |
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} |
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case HandleOrientation.Bottom: |
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{ |
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var wr = (double)bottomDescriptor.GetValue(adornedControl); |
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if (double.IsNaN(wr)) |
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{ |
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wr = (double)topDescriptor.GetValue(adornedControl); |
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wr = canvas.ActualHeight - (adornedControl.ActualHeight + wr); |
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} |
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else |
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{ |
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if (line1 != null) |
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{ |
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line1.StrokeDashArray.Clear(); |
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line2.StrokeDashArray.Clear(); |
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} |
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} |
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this.HandleLength = wr; |
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placement = new RelativePlacement(HorizontalAlignment.Center, VerticalAlignment.Bottom); |
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placement.YOffset = HandleLengthOffset; |
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break; |
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} |
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} |
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AdornerPanel.SetPlacement(this, placement); |
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this.Visibility = Visibility.Visible; |
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} |
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} |
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} |
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@ -0,0 +1,77 @@
@@ -0,0 +1,77 @@
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
|
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|
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using System; |
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using System.Windows.Input; |
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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 CanvasPositionExtension : AdornerProvider |
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{ |
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private MarginHandle[] _handles; |
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private MarginHandle _leftHandle, _topHandle, _rightHandle, _bottomHandle; |
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private Canvas _canvas; |
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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(Canvas)) |
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{ |
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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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_canvas = this.ExtendedItem.Parent.View as Canvas; |
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_handles = new[] |
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{ |
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_leftHandle = new CanvasPositionHandle(ExtendedItem, adornerPanel, HandleOrientation.Left), |
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_topHandle = new CanvasPositionHandle(ExtendedItem, adornerPanel, HandleOrientation.Top), |
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_rightHandle = new CanvasPositionHandle(ExtendedItem, adornerPanel, HandleOrientation.Right), |
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_bottomHandle = new CanvasPositionHandle(ExtendedItem, adornerPanel, HandleOrientation.Bottom), |
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}; |
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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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public void HideHandles() |
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{ |
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if (_handles != null) |
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{ |
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foreach (var handle in _handles) |
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{ |
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handle.ShouldBeVisible = false; |
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handle.Visibility = Visibility.Hidden; |
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} |
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} |
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} |
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public void ShowHandles() |
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{ |
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if (_handles != null) |
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{ |
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foreach (var handle in _handles) |
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{ |
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handle.ShouldBeVisible = true; |
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handle.Visibility = Visibility.Visible; |
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handle.DecideVisiblity(handle.HandleLength); |
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} |
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} |
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} |
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} |
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} |
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