Add GitHub contribution string

src/Calculator/Resources/en-US/Resources.resw

@@ -4734,4 +4734,8 @@
     <value>Settings</value>
     <comment>Text for the "Settings" header</comment>
   </data>
+  <data name="SettingsContribute" xml:space="preserve">
+    <value>To learn how you can contribute to Windows Calculator, visit the project on %HL%GitHub%HL%.</value>
+    <comment>{Locked="%HL%GitHub%HL%"}</comment>
+  </data>
 </root>

src/Calculator/SettingsPage.xaml

@@ -6,7 +6,7 @@
       xmlns:local="using:CalculatorApp"
       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
       Background="{ThemeResource AppChromeAcrylicHostBackdropMediumLowBrush}"
-      d:Height="455"
+      d:Height="465"
       d:Width="445"
       mc:Ignorable="d">
 
@@ -18,6 +18,7 @@
         </Style>
     </Page.Resources>
 
+    <ScrollViewer>
         <Grid x:Name="PageGrid" AutomationProperties.LandmarkType="Main">
             <Grid.RowDefinitions>
                 <RowDefinition Height="1*"
@@ -134,12 +135,30 @@
 
                     <Button x:Name="SettingsFeedbackButton"
                         x:Uid="SettingsFeedbackButton"
-                        Margin="0,24"
+                        Margin="0,12,0,0"
                         HorizontalAlignment="Left"
                         VerticalAlignment="Top"
                         Style="{StaticResource ButtonRevealStyle}"
                         Click="SettingsFeedbackButtonClick"/>
+
+                    <RichTextBlock x:Name="SettingsContribute"
+                               Margin="0,12,12,6"
+                               HorizontalAlignment="Left"
+                               Foreground="{ThemeResource SystemControlPageTextBaseHighBrush}"
+                               Style="{ThemeResource BodyRichTextBlockStyle}"
+                               TextWrapping="Wrap">
+                        <Paragraph>
+                            <Run x:Name="ContributeRunBeforeLink"/>
+                            <Hyperlink NavigateUri="https://go.microsoft.com/fwlink/?linkid=2099939"
+                           TextDecorations="None"
+                           ToolTipService.ToolTip="https://go.microsoft.com/fwlink/?linkid=2099939">
+                                <Run x:Name="ContributeRunLink"/>
+                            </Hyperlink>
+                            <Run x:Name="ContributeRunAfterLink"/>
+                        </Paragraph>
+                    </RichTextBlock>
                 </StackPanel>
             </StackPanel>
         </Grid>
+    </ScrollViewer>
 </Page>

src/Calculator/SettingsPage.xaml.cpp

@@ -60,6 +60,8 @@ SettingsPage::SettingsPage()
     {
         SettingsSystemTheme->IsChecked = true;
     }
+
+    InitializeContributeTextBlock();
 }
 
 void SettingsPage::OnNavigatedTo(Windows::UI::Xaml::Navigation::NavigationEventArgs ^ e)
@@ -71,6 +73,33 @@ void SettingsPage::OnNavigatedTo(Windows::UI::Xaml::Navigation::NavigationEventA
     }
 }
 
+void SettingsPage::InitializeContributeTextBlock()
+{
+    std::wstring contributeHyperlinkText  = resourceLoader->GetResourceString(L"SettingsContribute")->Data();
+
+    // The resource string has '%HL%' wrapped around 'GitHub'
+    // Break the string and assign pieces appropriately.
+    static const std::wstring delimiter{ L"%HL%" };
+    static const size_t delimiterLength{ delimiter.length() };
+
+    // Find the delimiters.
+    size_t firstSplitPosition = contributeHyperlinkText .find(delimiter, 0);
+    assert(firstSplitPosition != std::wstring::npos);
+    size_t secondSplitPosition = contributeHyperlinkText .find(delimiter, firstSplitPosition + 1);
+    assert(secondSplitPosition != std::wstring::npos);
+    size_t hyperlinkTextLength = secondSplitPosition - (firstSplitPosition + delimiterLength);
+
+    // Assign pieces.
+    auto contributeTextBeforeHyperlink = ref new String(contributeHyperlinkText.substr(0, firstSplitPosition).c_str());
+    auto contributeTextLink = ref new String(contributeHyperlinkText.substr(firstSplitPosition + delimiterLength, hyperlinkTextLength).c_str());
+    auto contributeTextAfterHyperlink = ref new String(contributeHyperlinkText.substr(secondSplitPosition + delimiterLength).c_str());
+
+    ContributeRunBeforeLink->Text = contributeTextBeforeHyperlink;
+    ContributeRunLink->Text = contributeTextLink;
+    ContributeRunAfterLink->Text = contributeTextAfterHyperlink;
+
+}
+
 void SettingsPage::BackButtonClick(Platform::Object ^ sender, Windows::UI::Xaml::RoutedEventArgs ^ e)
 {
     MainPageProperty->CollapseSettings();

src/Calculator/SettingsPage.xaml.h

@@ -19,6 +19,7 @@ namespace CalculatorApp
         virtual void OnNavigatedTo(Windows::UI::Xaml::Navigation::NavigationEventArgs ^ e) override;
 
     private:
+        void InitializeContributeTextBlock();
         void BackButtonClick(Platform::Object ^ sender, Windows::UI::Xaml::RoutedEventArgs ^ e);
         void ColorSettingsButtonClicked(_In_ Platform::Object ^ sender, _In_ Windows::UI::Xaml::RoutedEventArgs ^ e);
         void SettingsFeedbackButtonClick(_In_ Platform::Object ^ sender, _In_ Windows::UI::Xaml::RoutedEventArgs ^ e);