在 Silverlight/Wp7 中单击时，如何从容器中弹出控件以使其全屏显示？

Question

So I have a Panorama control and the PanoramaItems are programmatically added to the control using the following template.

<UserControl>
    <Grid x:Name="LayoutRoot">
            <controls:PanoramaItem Name="sitePanoramaItem" Header="{Binding Name}">
            <Controls:DockPanel VerticalAlignment="Stretch">
                <StackPanel Orientation="Horizontal" Margin="0,10,0,0" Controls:DockPanel.Dock="Top">
                    <Image Source="../Images/action.png" Width="64"  />
                    <TextBlock Text="{Binding Stats, Mode=TwoWay}" FontSize="45" Margin="15,0,0,0" />
                </StackPanel>
                <Grid x:Name="graphCanvas" HorizontalAlignment="Stretch" Margin="10,10,10,10">    </Grid>
            </Controls:DockPanel>
        </controls:PanoramaItem>
    </Grid>
</UserControl>

When I click on graphCanvas what I'd like to do is sorta pop the graphCanvas out and display that fullscreen then when I click again restore it to where it was. I've been all over this site and Google and can't find anything similar to what I'm looking for.

I would still like to maintain the Panorama control functionality so that the graphCanvas is still the only one visible but you can cycle through them. Currently I have it sorta working in that I remove the Grid from the DockPanel and put it directly in the LayoutRoot while making the sitePanoramaItem collapsed. However, it's not fullscreen as the Panorama name is still visible (I guess I could hide that as well...) When I put the graphCanvas back int he DockPanel the size of the canvas is all screwed up.

I was hoping there was a simpler way.

Is it even possible?

Answer 1

It is possible to create the UI you describe but it's not going to be simple. You're on the right track with removing it in code and adding it the LayoutRoot and making the Panorama hidden. However you would have to code the scrolling behavior yourself and that is going to be quite tricky - especially making it feel the way to panorama does.

One trick you could try is actually layer a PivotControl on top of your Panorama and have it be collapsed by default. Also edit it's template to remove all default content eg: remove the header control, set margins to 0, etc). Then when you want to go full screen you can remove all the graphCanvases from the Panorama items and and add them to new PivotItems in the PivotControl. Then hide the Panorama and show the Pivot. This will give you scrolling capability for free and the illusion of full screen.

Having said all that I'm not sure I would recommend this. The more common approach would be to simply be to navigate to another page when the user selects an item and handle the full screen aspects there (possibly using the Pivot control again for scrolling). And when you want to leave "fullscreen" mode simply navigate back to the first page. Handling Tombstoning of the fullscreen state will be much easier with this approach for one thing.

Answer 2

You can try making the graphCanvas a Page and putting it in a different XAML. Then add a frame (name it InnerFrame for example) in the same place where you have the graphCanvas right now and navigate to that page with InnerFrame. When the frame is clicked, you navigate with the RootFrame of the app to your graphCanvas page. When you decide to close it, just navigate back with the RootFrame.

Hope it's clear enough:)

Edit: Navigation in WP7 works very similar as the standard navigation in Silverlight 4, but it's a bit more restrictive. Just throw a PhoneApplicationFrame in your XAML like this:

<phone:PhoneApplicationFrame x:Name="Frame" />

This is basically the same as a Silverlight frame. All the pages you create inherit from PhoneApplicationPage by default, so they can be showed in a frame without any changes.

Your whole application actually runs on a PhoneApplicationFrame. If you take a look at your App class you will see this:

public PhoneApplicationFrame RootFrame { get; private set; }

Here's the MSDN documentation for the navigation system on WP7