DYNAMIC LANGUAGES AND DYNAMIC .NET FOR SILVERLIGHT in Visual Basic .NET

Make QR Code ISO/IEC18004 in Visual Basic .NET DYNAMIC LANGUAGES AND DYNAMIC .NET FOR SILVERLIGHT

CHAPTER 14 DYNAMIC LANGUAGES AND DYNAMIC .NET FOR SILVERLIGHT
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Creating a SilverlightMap.rb IronRuby File and Adding Map Mode
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Next create a simple text file named SilverlightMap.rb as an IronRuby file and write the following lines of code to include the required assemblies (including MapControl.dlls) and turn on aerial view with labels of the Map control. Notice that with the new Just-Text approach, I could reference the Map object by name. Any XAML elements with the x:Name set can be accessed through root_visual shorthand as shown here. require "bingmaps/Microsoft.Maps.MapControl" require "bingmaps/Microsoft.Maps.MapControl.Common" include include include include System::Windows System::Windows::Controls Microsoft::Maps::MapControl Microsoft::Scripting::Silverlight
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DynamicApplication.current.load_root_visual_from_string File.read("SilverlightMap.xaml") sm = DynamicApplication.current.root_visual.silverlight_map sm.map_in_ironruby.mode = AerialMode.new(true) As we included a reference of the XAML file to the SilverlightMap.xaml file, we need to include the same for the SilverlightMap.rb file, as shown here in highlighted bold fonts. <html> <head> <script src="dlr.js" type="text/javascript"> </script> </head> <body> <script type="application/x-zip-compressed" src="bingmaps.zip"> </script> <script type="application/xml+xaml" src="SilverlightMap.xaml" id="sl_map" Width="1350" Height="575" defer="true"> </script> <script type="application/ruby" src="SilverlightMap.rb" class="sl_map"> </script> </body> </html> Now if you copy updated the SilverlightMap.html file and newly created SilverlightMap.rb file to the web server root folder and browse it, you ll see the black background, skewed 3D angle, and labeled aerial view, as shown in Figure 14-4.
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CHAPTER 14 DYNAMIC LANGUAGES AND DYNAMIC .NET FOR SILVERLIGHT
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Figure 14-4. Map mode set to aerial with labels mode and 3D projection
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Add Rotate Map Capabilities
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One of the popular demonstrations at the Mix09 conference was Silverlight and Microsoft Bing Map integration with spinning capabilities for the Map object. Let s implement something similar in IronRuby. To implement this feature, you first need to define the Grid with two columns using ColumnDefinitions. <Grid.ColumnDefinitions> <ColumnDefinition Width="200"/> <ColumnDefinition Width="1100"/> </Grid.ColumnDefinitions> Next add three buttons named Rotate Map, Pause, and Stop and Reset, along with title text in the XAML file within the Border. All of this is in the first column on the Grid, as shown here. <StackPanel Grid.Column="0" Orientation="Vertical"> <Border CornerRadius="20" Margin="0,50,0,5" Width="150" Background="DarkBlue" HorizontalAlignment="Center"> <StackPanel Orientation="Vertical"> <TextBlock Text="3D Rotation" HorizontalAlignment="Center" FontSize="12" Foreground="White" Margin="0,5,0,10"/> <Button x:Name="rotate_map" Height="25" Content="Rotate Map" Width="100" Margin="0,0,0,10" Foreground="Black" VerticalAlignment="Center" HorizontalAlignment="Center" />
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CHAPTER 14 DYNAMIC LANGUAGES AND DYNAMIC .NET FOR SILVERLIGHT
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<Button x:Name="pause_resume" Height="25" Content="Pause" Background="DarkGoldenrod" Foreground="Black" Width="100" Margin="0,0,0,10" VerticalAlignment="Center" HorizontalAlignment="Center" /> <Button x:Name="stop_reset" Height="25" Content="Stop and Reset" Background="DarkGoldenrod" Foreground="Black" Width="100" Margin="0,0,0,10" VerticalAlignment="Center" HorizontalAlignment="Center" /> </StackPanel> </Border> </StackPanel> Now add the Map object to the second column of the Grid. <StackPanel Grid.Column="1"> <m:Map x:Name="map_in_ironruby" CredentialsProvider="Your Authentication Key Goes Here" Width="800" Height="400" HorizontalAlignment="Center"> <m:Map.Projection> <PlaneProjection RotationX="-20" RotationY="0" RotationZ="0"/> </m:Map.Projection> </m:Map> </StackPanel> In the next step you ll need to create some rather complex XAML update code. I would recommend creating the XAML file using a development environment such as Visual Studio or Expression Blend to take advantage of their editing and IntelliSense features. Then you can copy the completed XAML to the app.xaml file of your project. Create a storyboard with the name map_animation targeted for the Map object named map_in_ironruby. The storyboard defines the keyframes for the PlaneProjection animation properties RotationZ, RotationY, GlobalOffsetX, and GlobalOffsetZ. Add the storyBoard as a UserControl resource. <UserControl.Resources> <Storyboard x:Name="map_animation"> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="map_in_ironruby" Storyboard.TargetProperty= "(UIElement.Projection). (PlaneProjection.RotationZ)"> <EasingDoubleKeyFrame KeyTime="00:00:00" Value="15"/> <EasingDoubleKeyFrame KeyTime="00:00:01" Value="0"/> <EasingDoubleKeyFrame KeyTime="00:00:02" Value="-15"/> <EasingDoubleKeyFrame KeyTime="00:00:03" Value="0"/> <EasingDoubleKeyFrame KeyTime="00:00:04" Value="15"/> </DoubleAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="map_in_ironruby" Storyboard.TargetProperty=
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CHAPTER 14 DYNAMIC LANGUAGES AND DYNAMIC .NET FOR SILVERLIGHT
"(UIElement.Projection). (PlaneProjection.RotationY)"> <EasingDoubleKeyFrame KeyTime="00:00:00" Value="-90"/> <EasingDoubleKeyFrame KeyTime="00:00:01" Value="-180"/> <EasingDoubleKeyFrame KeyTime="00:00:02" Value="-270"/> <EasingDoubleKeyFrame KeyTime="00:00:03" Value="-360"/> <EasingDoubleKeyFrame KeyTime="00:00:04" Value="-270"/> </DoubleAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="map_in_ironruby" Storyboard.TargetProperty= "(UIElement.Projection). (PlaneProjection.GlobalOffsetX)"> <EasingDoubleKeyFrame KeyTime="00:00:00" Value="0"/> <EasingDoubleKeyFrame KeyTime="00:00:01" Value="200"/> <EasingDoubleKeyFrame KeyTime="00:00:02" Value="300"/> <EasingDoubleKeyFrame KeyTime="00:00:03" Value="200"/> <EasingDoubleKeyFrame KeyTime="00:00:04" Value="0"/> </DoubleAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="map_in_ironruby" Storyboard.TargetProperty= "(UIElement.Projection). (PlaneProjection.GlobalOffsetZ)"> <EasingDoubleKeyFrame KeyTime="00:00:00" Value="0"/> <EasingDoubleKeyFrame KeyTime="00:00:01" Value="300"/> <EasingDoubleKeyFrame KeyTime="00:00:02" Value="0"/> <EasingDoubleKeyFrame KeyTime="00:00:03" Value="-300"/> <EasingDoubleKeyFrame KeyTime="00:00:04" Value="0"/> </DoubleAnimationUsingKeyFrames> </Storyboard> </UserControl.Resources> Next implement the Click events within the IronRuby code to start, pause, resume, and stop the animation. First you need to include a reference to System.Windows.Media and System.Windows.Media.Animation. include System::Windows::Media include System::Windows::Media::Animation Now load the Disable pause_resume button during the initialization process of the application. sm.pause_resume.is_enabled = false Now implement the Click event of each button. Start with the rotate_map button. First set the Map object to left horizontal alignment in order to best use the available space for the animation. Then set the RepeatBehavior property of the storyboard animation to Forever and begin the animation. Finally enable the pause_resume button and set the button content to Pause. sm.rotate_map.click do |s,e| sm.map_in_ironruby.horizontal_alignment =
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