Added Scale and Offset to the combobox template

This allows the attached properties to be put on comboboxes and affect the hint. Currently it has the side affect of the hint being cut off when the combobox is expanded and the hint is too big.

Author: glen-nicol

MainDemo.Wpf/TextFields.xaml

@@ -197,6 +197,21 @@
                         </ComboBox.ItemsPanel>
                     </ComboBox>
                 </smtx:XamlDisplay>
+                <smtx:XamlDisplay Key="fields_27">
+                    <ComboBox materialDesign:HintAssist.Hint="(large float hint)"
+                              materialDesign:HintAssist.FloatingScale="1.5"
+                              materialDesign:HintAssist.FloatingOffset="0, -24"
+                              MinWidth="72"
+                              Margin="16 0 0 0"
+                              ItemsSource="{Binding LongListToTestComboVirtualization}"
+                              Style="{StaticResource MaterialDesignFloatingHintComboBox}">
+                        <ComboBox.ItemsPanel>
+                            <ItemsPanelTemplate>
+                                <VirtualizingStackPanel />
+                            </ItemsPanelTemplate>
+                        </ComboBox.ItemsPanel>
+                    </ComboBox>
+                </smtx:XamlDisplay>
             </StackPanel>
             <TextBlock Style="{StaticResource MaterialDesignHeadlineTextBlock}" Margin="0 16 0 5">Disabled Controls</TextBlock>
             <StackPanel Orientation="Horizontal">

MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.ComboBox.xaml

@@ -437,6 +437,8 @@
                                        SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
                                        UseLayoutRounding="{TemplateBinding UseLayoutRounding}"
                                        UseFloating="{Binding Path=(wpf:HintAssist.IsFloating), RelativeSource={RelativeSource TemplatedParent}}"
+                                       FloatingScale="{Binding Path=(wpf:HintAssist.FloatingScale), RelativeSource={RelativeSource TemplatedParent}}"
+                                       FloatingOffset="{Binding Path=(wpf:HintAssist.FloatingOffset), RelativeSource={RelativeSource TemplatedParent}}"                                               
                                        HintOpacity="{Binding Path=(wpf:HintAssist.HintOpacity), RelativeSource={RelativeSource TemplatedParent}}"
                                        Hint="{TemplateBinding wpf:HintAssist.Hint}" />
                     </Grid>