>>>Hi,
>>>
>>>Don't know if I can describe this well enough but:
>>>
>>>I have a Geometry which defines a shape (in the non-WPF meaning of the word). As an example assume it looks like a + sign.
>>>I use this as the Data property for a Path control.
>>>I add the Path to a Canvas and use the Path.RenderTransform to rotate it through 45 degrees (so that is appears on the Canvas more like an x shape)
>>>Now I want to create a new Path from this Path that gives the same appearance - but without using a Transform......
>>>(Well, not quite true: I could use a Transform - but the bounds of the new Path need to be relative to the Canvas)
>>>
>>>The above is a simple example - the actual solution will need to work with Paths using more complex Transforms
>>>
>>>Any suggestions?
>
>Don't know if this will help much, but here's an example of doing something similar in XAML:
>
>What I do is transform a DrawingGroup instead of transforming the geometry.
>
>
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
> <!--
> DrawingGroup
> DrawingGroup.Children
> GeometryDrawing
>
> ***Takes Geometry as a value
> DoubleAnimationUsingPath.PathGeometry
> DrawingGroup.ClipGeometry
> GeometryDrawing.Geometry
> Path.Data
> UIElement.Clip
> -->
>
> <SolidColorBrush x:Key="ContactsShirtBrush" Color="#ffffffff" />
> <SolidColorBrush x:Key="ContactsJacketBrush" Color="#ff357cff" />
>
> <LinearGradientBrush x:Key="ContactsHeadBrush" MappingMode="Absolute" StartPoint="287.208984,225.969238" EndPoint="287.208984,235.292969">
> <LinearGradientBrush.GradientStops>
> <GradientStop Offset="0.000000" Color="#ffe3bb95"/>
> <GradientStop Offset="0.209040" Color="#ffe7a976"/>
> <GradientStop Offset="1.000000" Color="#ffea9657"/>
> </LinearGradientBrush.GradientStops>
> <LinearGradientBrush.Transform>
> <MatrixTransform Matrix="1.000000,0.000000,-0.000000,-1.000000,-279.500000,236.500000" />
> </LinearGradientBrush.Transform>
> </LinearGradientBrush>
>
> <Pen x:Key="ContactsBodyPen" DashCap="Flat" Thickness="0.554446" Brush="#ff1e5995" MiterLimit="1.000000" />
> <Pen x:Key="ContactsHeadPen" DashCap="Flat" Thickness="0.362068" Brush="#ffd49657" MiterLimit="1.000000" />
>
> <PathGeometry x:Key="ContactsShirtPath" Figures="M 10.473633,15.442383 L 5.522461,15.442383 L 5.522461,9.950195 L 10.473633,9.950195 L 10.473633,15.442383 Z" />
> <PathGeometry x:Key="ContactsHeadPath" Figures="M 12.371094,5.868652 C 12.371094,8.443359 10.284180,10.530762 7.709961,10.530762 C 5.134766,10.530762 3.047852,8.443359 3.047852,5.868652 C 3.047852,3.293945 5.134766,1.207031 7.709961,1.207031 C 10.284180,1.207031 12.371094,3.293945 12.371094,5.868652 Z" />
> <PathGeometry x:Key="ContactsLeftSholderPath" Figures="M 3.160156,10.143555 C 7.221680,9.195801 5.445313,10.221191 6.295898,13.470215 L 7.214844,15.182129 L 0.414063,15.191406 L 0.433594,14.739746 C 0.333984,11.473145 1.806641,10.459473 3.160156,10.143555 Z" />
> <PathGeometry x:Key="ContactsRightSholderPath" Figures="M 12.794922,10.143555 C 8.733398,9.195801 10.628906,10.221191 9.777344,13.470215 L 8.607422,15.182129 L 15.541016,15.191406 L 15.521484,14.739746 C 15.621094,11.473145 14.148438,10.459473 12.794922,10.143555 Z" />
>
> <DrawingCollection x:Key="dwgContactPaths">
> <GeometryDrawing Geometry="{StaticResource ContactsShirtPath}"
> Brush="{StaticResource ContactsShirtBrush}" />
> <GeometryDrawing Geometry="{StaticResource ContactsHeadPath}"
> Pen="{StaticResource ContactsHeadPen}"
> Brush="{StaticResource ContactsHeadBrush}" />
> <GeometryDrawing Geometry="{StaticResource ContactsLeftSholderPath}"
> Pen="{StaticResource ContactsBodyPen}"
> Brush="{StaticResource ContactsJacketBrush}" />
> <GeometryDrawing Geometry="{StaticResource ContactsRightSholderPath}"
> Pen="{StaticResource ContactsBodyPen}"
> Brush="{StaticResource ContactsJacketBrush}" />
> </DrawingCollection>
>
> <DrawingGroup x:Key="dwgContact" Children="{StaticResource dwgContactPaths}" />
> <DrawingBrush x:Key="vbrushContact" Drawing="{StaticResource dwgContact}" />
> <DrawingImage x:Key="vimgContact" Drawing="{StaticResource dwgContact}" />
>
> <DrawingGroup x:Key="dwgContacts">
> <DrawingGroup Children="{StaticResource dwgContactPaths}" >
> <DrawingGroup.Transform>
> <TransformGroup>
> <ScaleTransform ScaleX="0.5" ScaleY="0.5" />
> </TransformGroup>
> </DrawingGroup.Transform>
> </DrawingGroup>
> <DrawingGroup Children="{StaticResource dwgContactPaths}">
> <DrawingGroup.Transform>
> <TransformGroup>
> <ScaleTransform ScaleX="0.5" ScaleY="0.5" />
> <TranslateTransform X="4" Y="3" />
> </TransformGroup>
> </DrawingGroup.Transform>
> </DrawingGroup>
> </DrawingGroup>
> <DrawingImage x:Key="vimgContacts" Drawing="{StaticResource dwgContacts}" />
> <DrawingBrush x:Key="vbrushContacts" Drawing="{StaticResource dwgContacts}" />
></ResourceDictionary>
>>
>Usage:
>
>
<Image Margin="2,0,0,0"
> Name="image1"
> Grid.Column="0"
> Stretch="Fill"
> HorizontalAlignment="Left"
> Width="16"
> Height="16"
> VerticalAlignment="Center"
> Source="{StaticResource vimgContacts}" />Hi,
Thanks for the code. You're right - it didn't help much for the case in question but gave me a few ideas for something else I needed!
The code I posted solved my problem - basically adding the Transform of the Path to the content Geometry and removing it from the Path. Then I can use the change in bounds for the Path to calculate a compensating size and position so that the final appearance is identical. Maybe there's a simpler way - but I haven't found one....
BTW, completely off topic : Do you use Snoop? I find it very useful for digging into visual trees at runtime.....
Viv
