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Normal Topic CollapseButtonBrush or equivalent on Diagrams? (Read 1809 times)
ToddGreve
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CollapseButtonBrush or equivalent on Diagrams?
Jun 19th, 2010 at 2:26am
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The Diagram has a setting to define the brush to use for the expand/collapse button on your canvas. You can define this to use an ImageBrush so you can use a custom graphic. Is there a way though to define a difference brush/image for when the object is expanded vs when it is collapsed?
I would like to use a custom graphic indicating this node is expanded, and a second one to indicate it is collapsed but don't see a way to do this so far.
Any one have any ideas? Would I have to customize the DiagramLite source to get this functionality?
Thanks in advance
Todd
  
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Stoyo
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Re: CollapseButtonBrush or equivalent on Diagrams?
Reply #1 - Jun 21st, 2010 at 8:06am
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There's no way to do that at this time. We'll try to make the button templatable for the next release.

Stoyan
  
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ToddGreve
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Re: CollapseButtonBrush or equivalent on Diagrams?
Reply #2 - Jun 21st, 2010 at 10:26pm
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Thanks Stoyan
  
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Lyubo
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Re: CollapseButtonBrush or equivalent on Diagrams?
Reply #3 - Jul 1st, 2010 at 12:55pm
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Hi Todd,

We've made the ExpandButton templateble and now you can set your custom template via the Diagram.ExpandButtonTemplate dependancy property. Here's the beta build with these changes: https://mindfusion.eu/_beta/diaglite17_expandtempl.zip.

There are two defined VisualStates - "Expanded" and "Collapsed". You can use them to define your custom visual indication of a node's Expanded state.

For example:

Code
Select All
<ControlTemplate x:Key="CustomExpandButton" TargetType="diag:ExpandButton">
    <Border Background="#7DFFFFFF"
        BorderBrush="#FF000000"
        BorderThickness="1">
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="States">
                <VisualState x:Name="Expanded" />
                <VisualState x:Name="Collapsed">
                    <Storyboard>
                        <ColorAnimation Duration="0"
                            Storyboard.TargetName="ExpanderRect"
                        Storyboard.TargetProperty="(Rectangle.Fill).(SolidColorBrush.Color)"
                        To="#FFFF0000"/>
                   </Storyboard>
               </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        <Rectangle x:Name="ExpanderRect"
            Height="5" Width="5" Fill="#FF00FF00" />
    </Border>
</ControlTemplate>

<diag:Diagram Name="diagram" ExpandButtonTemplate="{StaticResource CustomExpandButton}" />


Try it out and let us know what you think.

Regards,
Lyubo
  
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