Fill missing MAUI property-mapper keys

src/Microsoft.AndroidX.Compose.Maui.Sample/Pages/ButtonsPage.xaml

@@ -64,6 +64,75 @@
                 x:Name="ClickCountLabel"
                 Text="No clicks yet" />
 
+            <!-- New mapper coverage from the keys-fill PR. -->
+            <Label
+                Text="-- New mapper coverage --"
+                FontAttributes="Bold" />
+
+            <Label Text="CharacterSpacing — letters spread out." />
+            <Button Text="Wide letters"
+                    CharacterSpacing="6"
+                    HorizontalOptions="Start"
+                    Clicked="OnButtonClicked" />
+
+            <Label Text="CornerRadius — pill shape (50)." />
+            <Button Text="Pill"
+                    CornerRadius="50"
+                    BackgroundColor="{StaticResource Primary}"
+                    TextColor="White"
+                    HorizontalOptions="Start"
+                    Clicked="OnButtonClicked" />
+
+            <Label Text="CornerRadius — sharp corners (0)." />
+            <Button Text="Sharp"
+                    CornerRadius="0"
+                    BackgroundColor="{StaticResource Primary}"
+                    TextColor="White"
+                    HorizontalOptions="Start"
+                    Clicked="OnButtonClicked" />
+
+            <Label Text="Font — large bold." />
+            <Button Text="Big bold"
+                    FontSize="24"
+                    FontAttributes="Bold"
+                    HorizontalOptions="Start"
+                    Clicked="OnButtonClicked" />
+
+            <Label Text="Padding — generous internal space." />
+            <Button Text="Padded"
+                    Padding="40,20"
+                    BackgroundColor="#FFCDD2"
+                    TextColor="#B71C1C"
+                    HorizontalOptions="Start"
+                    Clicked="OnButtonClicked" />
+
+            <Label Text="StrokeColor + StrokeThickness — outlined button." />
+            <Button Text="Outlined"
+                    BackgroundColor="Transparent"
+                    TextColor="#1976D2"
+                    BorderColor="#1976D2"
+                    BorderWidth="2"
+                    HorizontalOptions="Start"
+                    Clicked="OnButtonClicked" />
+
+            <Label Text="StrokeColor + StrokeThickness — heavy stroke." />
+            <Button Text="Heavy outline"
+                    BackgroundColor="Transparent"
+                    TextColor="#E91E63"
+                    BorderColor="#E91E63"
+                    BorderWidth="4"
+                    CornerRadius="20"
+                    HorizontalOptions="Start"
+                    Clicked="OnButtonClicked" />
+
+            <Label Text="ImageSource — leading icon (dotnet_bot)." />
+            <Button Text="With image"
+                    ImageSource="dotnet_bot.png"
+                    BackgroundColor="{StaticResource Primary}"
+                    TextColor="White"
+                    HorizontalOptions="Start"
+                    Clicked="OnButtonClicked" />
+
         </VerticalStackLayout>
     </ScrollView>
 

src/Microsoft.AndroidX.Compose.Maui.Sample/Pages/EditorPage.xaml

@@ -47,6 +47,49 @@
                     MaxLength="30"
                     HeightRequest="100" />
 
+            <!-- New mapper coverage from the keys-fill PR. -->
+            <Label Text="-- New mapper coverage --"
+                   FontAttributes="Bold" />
+
+            <Label Text="CharacterSpacing — wide-set glyphs." />
+            <Editor Text="Spaced out paragraph used to verify CharacterSpacing maps through to Compose's letterSpacing TextStyle slot."
+                    CharacterSpacing="3"
+                    HeightRequest="120" />
+
+            <Label Text="HorizontalTextAlignment — Center." />
+            <Editor Text="Each line is centered — verify Compose's textAlign mapping for multi-line."
+                    HorizontalTextAlignment="Center"
+                    HeightRequest="100" />
+
+            <Label Text="HorizontalTextAlignment — End." />
+            <Editor Text="Right-aligned multi-line content for the End case."
+                    HorizontalTextAlignment="End"
+                    HeightRequest="100" />
+
+            <Label Text="IsSpellCheckEnabled / IsTextPredictionEnabled = False (no autocorrect, no red squiggles)." />
+            <Editor Placeholder="Type 'teh' — won't be corrected"
+                    IsSpellCheckEnabled="False"
+                    IsTextPredictionEnabled="False"
+                    HeightRequest="80" />
+
+            <Label Text="PlaceholderColor — orange hint." />
+            <Editor Placeholder="Type to clear the orange hint"
+                    PlaceholderColor="#FF9800"
+                    HeightRequest="80" />
+
+            <Label Text="CursorPosition + SelectionLength — programmatic caret control." />
+            <Editor x:Name="CursorEditor"
+                    Text="The quick brown fox jumps over the lazy dog"
+                    HeightRequest="100" />
+            <HorizontalStackLayout Spacing="8">
+                <Button Text="Caret = 0"        Clicked="OnEditorCaretStart" />
+                <Button Text="Caret = end"      Clicked="OnEditorCaretEnd" />
+                <Button Text="Select 'quick'"   Clicked="OnEditorSelectQuick" />
+            </HorizontalStackLayout>
+            <Label x:Name="EditorCursorEcho"
+                   Text="Caret: 0  Selection length: 0"
+                   FontAttributes="Italic" />
+
         </VerticalStackLayout>
     </ScrollView>
 

src/Microsoft.AndroidX.Compose.Maui.Sample/Pages/EditorPage.xaml.cs

@@ -22,4 +22,33 @@ void OnNoteTextChanged(object? sender, TextChangedEventArgs e)
             StringSplitOptions.RemoveEmptyEntries).Length;
         WordCountLabel.Text = $"Words: {words}   Characters: {text.Length}";
     }
+
+    void OnEditorCaretStart(object? sender, EventArgs e)
+    {
+        CursorEditor.CursorPosition  = 0;
+        CursorEditor.SelectionLength = 0;
+        UpdateEditorCursorEcho();
+    }
+
+    void OnEditorCaretEnd(object? sender, EventArgs e)
+    {
+        var len = CursorEditor.Text?.Length ?? 0;
+        CursorEditor.CursorPosition  = len;
+        CursorEditor.SelectionLength = 0;
+        UpdateEditorCursorEcho();
+    }
+
+    void OnEditorSelectQuick(object? sender, EventArgs e)
+    {
+        var text = CursorEditor.Text ?? string.Empty;
+        var idx = text.IndexOf("quick", StringComparison.Ordinal);
+        if (idx < 0) return;
+        CursorEditor.CursorPosition  = idx;
+        CursorEditor.SelectionLength = "quick".Length;
+        UpdateEditorCursorEcho();
+    }
+
+    void UpdateEditorCursorEcho() =>
+        EditorCursorEcho.Text =
+            $"Caret: {CursorEditor.CursorPosition}  Selection length: {CursorEditor.SelectionLength}";
 }

src/Microsoft.AndroidX.Compose.Maui.Sample/Pages/EntriesPage.xaml

@@ -68,6 +68,77 @@
                 IsReadOnly="True"
                 HorizontalOptions="Fill" />
 
+            <!--
+                Section below covers the keys that landed in the
+                "Fill missing MAUI property-mapper keys" PR. Each
+                Entry exercises one specific new mapper so the
+                wire-up can be confirmed by eye.
+            -->
+            <Label Text="-- New mapper coverage --"
+                   FontAttributes="Bold" />
+
+            <Label Text="CharacterSpacing — letters spread apart." />
+            <Entry Text="Spaced out characters"
+                   CharacterSpacing="4"
+                   HorizontalOptions="Fill" />
+
+            <Label Text="HorizontalTextAlignment — Start / Center / End." />
+            <Entry Text="Start aligned"
+                   HorizontalTextAlignment="Start"
+                   HorizontalOptions="Fill" />
+            <Entry Text="Center aligned"
+                   HorizontalTextAlignment="Center"
+                   HorizontalOptions="Fill" />
+            <Entry Text="End aligned"
+                   HorizontalTextAlignment="End"
+                   HorizontalOptions="Fill" />
+
+            <Label Text="MaxLength — capped at 8 characters." />
+            <Entry x:Name="MaxLengthEntry"
+                   Placeholder="Max 8 chars"
+                   MaxLength="8"
+                   TextChanged="OnMaxLengthChanged"
+                   HorizontalOptions="Fill" />
+            <Label x:Name="MaxLengthLabel"
+                   Text="Type — entry will refuse the 9th character."
+                   FontAttributes="Italic" />
+
+            <Label Text="ClearButtonVisibility=WhileEditing — trailing X clears the field." />
+            <Entry Placeholder="Type, then tap the X"
+                   ClearButtonVisibility="WhileEditing"
+                   HorizontalOptions="Fill" />
+
+            <Label Text="ReturnType — IME action key changes per Entry." />
+            <Entry Placeholder="ReturnType=Done"   ReturnType="Done"   HorizontalOptions="Fill" />
+            <Entry Placeholder="ReturnType=Go"     ReturnType="Go"     HorizontalOptions="Fill" />
+            <Entry Placeholder="ReturnType=Next"   ReturnType="Next"   HorizontalOptions="Fill" />
+            <Entry Placeholder="ReturnType=Search" ReturnType="Search" HorizontalOptions="Fill" />
+            <Entry Placeholder="ReturnType=Send"   ReturnType="Send"   HorizontalOptions="Fill" />
+
+            <Label Text="IsSpellCheckEnabled=False / IsTextPredictionEnabled=False — no red squiggles, no autocorrect bar." />
+            <Entry Placeholder="Type a typo: 'teh'"
+                   IsSpellCheckEnabled="False"
+                   IsTextPredictionEnabled="False"
+                   HorizontalOptions="Fill" />
+
+            <Label Text="PlaceholderColor — pink hint." />
+            <Entry Placeholder="Pink hint until you type"
+                   PlaceholderColor="#E91E63"
+                   HorizontalOptions="Fill" />
+
+            <Label Text="CursorPosition + SelectionLength — buttons drive the caret." />
+            <Entry x:Name="CursorEntry"
+                   Text="The quick brown fox"
+                   HorizontalOptions="Fill" />
+            <HorizontalStackLayout Spacing="8">
+                <Button Text="Caret = 0" Clicked="OnCaretToStart" />
+                <Button Text="Caret = end" Clicked="OnCaretToEnd" />
+                <Button Text="Select 'quick'" Clicked="OnSelectQuick" />
+            </HorizontalStackLayout>
+            <Label x:Name="CursorEcho"
+                   Text="Caret: 0 / 19  Selection length: 0"
+                   FontAttributes="Italic" />
+
         </VerticalStackLayout>
     </ScrollView>
 

src/Microsoft.AndroidX.Compose.Maui.Sample/Pages/EntriesPage.xaml.cs

@@ -21,4 +21,44 @@ void OnNameTextChanged(object? sender, TextChangedEventArgs e)
             ? "Greeting will appear here."
             : $"Hello, {e.NewTextValue}!";
     }
+
+    void OnMaxLengthChanged(object? sender, TextChangedEventArgs e)
+    {
+        var text = e.NewTextValue ?? string.Empty;
+        MaxLengthLabel.Text = text.Length >= 8
+            ? $"At cap ({text.Length}/8) — extra typing rejected."
+            : $"Length: {text.Length}/8";
+    }
+
+    void OnCaretToStart(object? sender, EventArgs e)
+    {
+        CursorEntry.CursorPosition  = 0;
+        CursorEntry.SelectionLength = 0;
+        UpdateCursorEcho();
+    }
+
+    void OnCaretToEnd(object? sender, EventArgs e)
+    {
+        var len = CursorEntry.Text?.Length ?? 0;
+        CursorEntry.CursorPosition  = len;
+        CursorEntry.SelectionLength = 0;
+        UpdateCursorEcho();
+    }
+
+    void OnSelectQuick(object? sender, EventArgs e)
+    {
+        var text = CursorEntry.Text ?? string.Empty;
+        var idx = text.IndexOf("quick", StringComparison.Ordinal);
+        if (idx < 0) return;
+        CursorEntry.CursorPosition  = idx;
+        CursorEntry.SelectionLength = "quick".Length;
+        UpdateCursorEcho();
+    }
+
+    void UpdateCursorEcho()
+    {
+        var len = CursorEntry.Text?.Length ?? 0;
+        CursorEcho.Text =
+            $"Caret: {CursorEntry.CursorPosition} / {len}  Selection length: {CursorEntry.SelectionLength}";
+    }
 }

src/Microsoft.AndroidX.Compose.Maui.Sample/Pages/IndicatorPage.xaml

@@ -50,6 +50,39 @@
                 <Button x:Name="ShapeButton" Text="Toggle shape" Clicked="OnToggleShape" />
             </HorizontalStackLayout>
 
+            <!-- New mapper coverage from the keys-fill PR. -->
+            <Label
+                Text="-- New mapper coverage --"
+                FontAttributes="Bold" />
+
+            <Label Text="HideSingle=True — single dot is hidden." />
+            <IndicatorView Count="1"
+                           HideSingle="True"
+                           IndicatorColor="LightGray"
+                           SelectedIndicatorColor="MediumBlue"
+                           IndicatorSize="10"
+                           HorizontalOptions="Center" />
+            <Label Text="(nothing should appear above this line)"
+                   FontAttributes="Italic"
+                   HorizontalOptions="Center" />
+
+            <Label Text="HideSingle=False — single dot still shown." />
+            <IndicatorView Count="1"
+                           HideSingle="False"
+                           IndicatorColor="LightGray"
+                           SelectedIndicatorColor="MediumBlue"
+                           IndicatorSize="10"
+                           HorizontalOptions="Center" />
+
+            <Label Text="MaximumVisible=3 (Count=10) — only 3 dots render." />
+            <IndicatorView Count="10"
+                           Position="0"
+                           MaximumVisible="3"
+                           IndicatorColor="LightGray"
+                           SelectedIndicatorColor="MediumBlue"
+                           IndicatorSize="10"
+                           HorizontalOptions="Center" />
+
         </VerticalStackLayout>
     </ScrollView>
 

src/Microsoft.AndroidX.Compose.Maui.Sample/Pages/LabelsPage.xaml

@@ -54,6 +54,35 @@
 
             <Label Text="Hello,&#10;Multi-line label.&#10;Line 3." />
 
+            <!-- New mapper coverage from the keys-fill PR. -->
+            <Label Text="-- New mapper coverage --"
+                   FontAttributes="Bold" />
+
+            <Label Text="CharacterSpacing — wide letters."
+                   CharacterSpacing="6" />
+
+            <Label Text="LineHeight — multi-line label, double-line-height."
+                   LineHeight="2.0"
+                   FontSize="16" />
+
+            <Label Text="LineHeight (default) — same content for comparison."
+                   FontSize="16" />
+
+            <Label Text="Padding — pink chip with 12pt internal padding."
+                   Padding="12,6"
+                   BackgroundColor="#FFCDD2"
+                   TextColor="#B71C1C"
+                   HorizontalOptions="Start" />
+
+            <Label Text="TextDecorations=Underline"
+                   TextDecorations="Underline" />
+
+            <Label Text="TextDecorations=Strikethrough"
+                   TextDecorations="Strikethrough" />
+
+            <Label Text="TextDecorations=Underline,Strikethrough"
+                   TextDecorations="Underline,Strikethrough" />
+
         </VerticalStackLayout>
     </ScrollView>
 

src/Microsoft.AndroidX.Compose.Maui.Sample/Pages/PickersPage.xaml

@@ -84,6 +84,38 @@
                 Clicked="OnResetClicked"
                 HorizontalOptions="Fill" />
 
+            <!-- New mapper coverage from the keys-fill PR. -->
+            <Label Text="-- New mapper coverage --"
+                   FontAttributes="Bold" />
+
+            <Label Text="Picker.CharacterSpacing — wide letters."
+                   FontAttributes="Bold" />
+            <Picker Title="Wide picker"
+                    ItemsSource="{StaticResource Fruits}"
+                    CharacterSpacing="3"
+                    HorizontalOptions="Fill" />
+
+            <Label Text="Picker.HorizontalTextAlignment=Center."
+                   FontAttributes="Bold" />
+            <Picker Title="Centered picker"
+                    ItemsSource="{StaticResource Fruits}"
+                    HorizontalTextAlignment="Center"
+                    HorizontalOptions="Fill" />
+
+            <Label Text="DatePicker.CharacterSpacing — wide formatted date."
+                   FontAttributes="Bold" />
+            <DatePicker x:Name="WideDate"
+                        Format="MMM d, yyyy"
+                        CharacterSpacing="3"
+                        HorizontalOptions="Fill" />
+
+            <Label Text="TimePicker.CharacterSpacing — wide HH:mm."
+                   FontAttributes="Bold" />
+            <TimePicker x:Name="WideTime"
+                        Format="HH:mm"
+                        CharacterSpacing="3"
+                        HorizontalOptions="Fill" />
+
         </VerticalStackLayout>
     </ScrollView>