jkuehner
12 years ago
6 changed files with 212 additions and 3 deletions
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using System; |
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using System.Collections.Generic; |
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using System.ComponentModel; |
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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.Controls.Primitives; |
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using System.Windows.Media; |
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using System.Diagnostics; |
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using ICSharpCode.WpfDesign.Designer.Controls; |
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namespace ICSharpCode.WpfDesign.Designer.ThumbnailView |
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{ |
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public class ThumbnailView : Control, INotifyPropertyChanged |
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{ |
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public DesignSurface DesignSurface |
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{ |
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get { return (DesignSurface)GetValue(DesignSurfaceProperty); } |
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set { SetValue(DesignSurfaceProperty, value); } |
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} |
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public static readonly DependencyProperty DesignSurfaceProperty = |
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DependencyProperty.Register("DesignSurface", typeof(DesignSurface), typeof(ThumbnailView), new PropertyMetadata(OnDesignSurfaceChanged)); |
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private static void OnDesignSurfaceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) |
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{ |
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var ctl = d as ThumbnailView; |
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if (ctl.oldSurface != null) |
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ctl.oldSurface.LayoutUpdated -= ctl.DesignSurface_LayoutUpdated; |
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ctl.oldSurface = ctl.DesignSurface; |
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ctl.scrollViewer = null; |
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if (ctl.DesignSurface != null) |
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{ |
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ctl.DesignSurface.LayoutUpdated += ctl.DesignSurface_LayoutUpdated; |
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} |
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ctl.OnPropertyChanged("ScrollViewer"); |
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} |
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static ThumbnailView() |
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{ |
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DefaultStyleKeyProperty.OverrideMetadata(typeof(ThumbnailView), new FrameworkPropertyMetadata(typeof(ThumbnailView))); |
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} |
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public ScrollViewer ScrollViewer |
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{ |
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get |
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{ |
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if (DesignSurface != null && scrollViewer == null) |
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scrollViewer = DesignSurface.TryFindChild<ZoomControl>(); |
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return scrollViewer; |
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} |
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} |
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void DesignSurface_LayoutUpdated(object sender, EventArgs e) |
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{ |
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if (this.scrollViewer == null) |
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OnPropertyChanged("ScrollViewer"); |
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if (this.scrollViewer != null) |
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{ |
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double scale, xOffset, yOffset; |
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this.InvalidateScale(out scale, out xOffset, out yOffset); |
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this.zoomThumb.Width = scrollViewer.ViewportWidth * scale; |
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this.zoomThumb.Height = scrollViewer.ViewportHeight * scale; |
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Canvas.SetLeft(this.zoomThumb, xOffset + this.ScrollViewer.HorizontalOffset*scale); |
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Canvas.SetTop(this.zoomThumb, yOffset + this.ScrollViewer.VerticalOffset*scale); |
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} |
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} |
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private DesignSurface oldSurface; |
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private ZoomControl scrollViewer; |
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private Canvas zoomCanvas; |
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private Thumb zoomThumb; |
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public override void OnApplyTemplate() |
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{ |
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base.OnApplyTemplate(); |
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this.zoomThumb = Template.FindName("PART_ZoomThumb", this) as Thumb; |
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this.zoomCanvas = Template.FindName("PART_ZoomCanvas", this) as Canvas; |
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this.zoomThumb.DragDelta += this.Thumb_DragDelta; |
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} |
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private void Thumb_DragDelta(object sender, DragDeltaEventArgs e) |
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{ |
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if (DesignSurface != null) |
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{ |
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if (scrollViewer != null) |
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{ |
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double scale, xOffset, yOffset; |
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this.InvalidateScale(out scale, out xOffset, out yOffset); |
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scrollViewer.ScrollToHorizontalOffset(scrollViewer.HorizontalOffset + e.HorizontalChange / scale); |
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scrollViewer.ScrollToVerticalOffset(scrollViewer.VerticalOffset + e.VerticalChange / scale); |
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} |
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} |
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} |
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private void InvalidateScale(out double scale, out double xOffset, out double yOffset) |
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{ |
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var designedElement = this.DesignSurface.DesignContext.RootItem.Component as FrameworkElement; |
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var fac1 = designedElement.ActualWidth / zoomCanvas.ActualWidth; |
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var fac2 = designedElement.ActualHeight / zoomCanvas.ActualHeight; |
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// zoom canvas size
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double x = this.zoomCanvas.ActualWidth; |
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double y = this.zoomCanvas.ActualHeight; |
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if (fac1 < fac2) |
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{ |
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x = designedElement.ActualWidth / fac2; |
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xOffset = (zoomCanvas.ActualWidth - x) / 2; |
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yOffset = 0; |
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} |
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else |
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{ |
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y = designedElement.ActualHeight / fac1; |
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xOffset = 0; |
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yOffset = (zoomCanvas.ActualHeight - y) / 2; |
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} |
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double w = designedElement.ActualWidth; |
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double h = designedElement.ActualHeight; |
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double scaleX = x / w; |
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double scaleY = y / h; |
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scale = (scaleX < scaleY) ? scaleX : scaleY; |
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xOffset += (x - scale * w) / 2; |
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yOffset += (y - scale * h) / 2; |
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} |
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public event PropertyChangedEventHandler PropertyChanged; |
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protected virtual void OnPropertyChanged(string propertyName) |
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{ |
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PropertyChangedEventHandler handler = PropertyChanged; |
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if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName)); |
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} |
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} |
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} |
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@ -0,0 +1,43 @@
@@ -0,0 +1,43 @@
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<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" |
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" |
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xmlns:thumbnailView="clr-namespace:ICSharpCode.WpfDesign.Designer.ThumbnailView"> |
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<Style TargetType="{x:Type thumbnailView:ThumbnailView}"> |
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<Setter Property="SnapsToDevicePixels" Value="true" /> |
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<Setter Property="HorizontalAlignment" Value="Stretch" /> |
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<Setter Property="VerticalAlignment" Value="Stretch" /> |
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<Setter Property="Padding" Value="5" /> |
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<Setter Property="Template"> |
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<Setter.Value> |
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<ControlTemplate TargetType="{x:Type thumbnailView:ThumbnailView}"> |
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<Border CornerRadius="1" |
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ClipToBounds="True" |
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BorderThickness="1" |
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Background="#EEE" |
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BorderBrush="DimGray"> |
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<Grid> |
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<Canvas Margin="{TemplateBinding Padding}" Name="PART_ZoomCanvas"> |
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<Canvas.Background> |
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<VisualBrush Stretch="Uniform" Visual="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=ScrollViewer.Content}" /> |
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</Canvas.Background> |
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<Thumb Name="PART_ZoomThumb" Cursor="SizeAll"> |
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<Thumb.Style> |
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<Style TargetType="Thumb"> |
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<Setter Property="Template"> |
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<Setter.Value> |
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<ControlTemplate TargetType="Thumb"> |
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<Rectangle StrokeThickness="1" Stroke="Black" Fill="Transparent" /> |
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</ControlTemplate> |
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</Setter.Value> |
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</Setter> |
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</Style> |
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</Thumb.Style> |
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</Thumb> |
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</Canvas> |
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</Grid> |
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</Border> |
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</ControlTemplate> |
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</Setter.Value> |
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</Setter> |
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</Style> |
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</ResourceDictionary> |
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