How do I apply BitmapEffect to a particular area of an Image ?
BitmapEffect can be applied to a particular area of an Image using the ‘BitmapEffectInput’ property of the ‘Image’ class. ‘AreaToApplyEffect’ property of the BitmapEffectInput markup extension is used to specify the area and ‘AreaToApplyEffectUnits’ property is used to specify the units. The following lines of code are used to apply BitmapEffect to a lower part of the image. [XAML] <Image Source=’pda.ico’ Height=’160′ Width=’160′> <Image.BitmapEffect> <BevelBitmapEffect BevelWidth=’10’ EdgeProfile=’BulgedUp’/> </Image.BitmapEffect> <Image.BitmapEffectInput> <BitmapEffectInput AreaToApplyEffect=’0,0.5,1,0.5′ AreaToApplyEffectUnits=’RelativeToBoundingBox’/> </Image.BitmapEffectInput> </Image>
What is the order in which the controls are rendered ?
The visual tree determines the rendering order of WPF visual and drawing objects. The rendering order of traversal starts with the root visual, which is the top most element in the root visual tree. The root visual’s children are then traversed, left to right. Find the following button control rendering order in visual tree. Reference link: https://docs.microsoft.com/en-us/dotnet/framework/wpf/graphics-multimedia/wpf-graphics-rendering-overview
How do I use DrawingVisual object ?
In order to use DrawingVisual objects, you need to create a host container to store the DrawingVisual objects. Find the following code snippets, [C#] public class VisualHostContainer : FrameworkElement { private VisualCollection _myVisualCollection; public VisualHostContainer() { _myVisualCollection = new VisualCollection(this); _myVisualCollection.Add(CreateDrawingVisualRectangle()); _myVisualCollection.Add(CreateDrawingVisualText()); } } Reference link: https://docs.microsoft.com/en-us/dotnet/framework/wpf/graphics-multimedia/using-drawingvisual-objects
How can I animate a BorderThickness value ?
BorderThickness can be animated by using the ‘ThicknessAnimation’ class. The following example animates the thickness of a border by using the ThicknessAnimation. The example uses the ‘BorderThickness’ property of Border. [XAML] <!– This example shows how to use the ThicknessAnimation to create an animation on the BorderThickness property of a Border. –> <Page xmlns=’http://schemas.microsoft.com/winfx/2006/xaml/presentation’ xmlns:x=’http://schemas.microsoft.com/winfx/2006/xaml’ > <StackPanel Orientation=’Vertical’ HorizontalAlignment=’Center’> <Border Background=’#99FFFFFF’ BorderBrush=’#CCCCFF’ BorderThickness=’1′ Margin=’0,60,0,20′ Padding=’20’ > <Border.Triggers> <EventTrigger RoutedEvent=’Border.Loaded’> <BeginStoryboard> <Storyboard> <!– BorderThickness animates from left=1, right=1, top=1, and bottom=1 to left=28, right=28, top=14, and bottom=14 over one second. –> <ThicknessAnimation Storyboard.TargetProperty=’BorderThickness’ Duration=’0:0:1.5′ FillBehavior=’HoldEnd’ From=’1,1,1,1′ To=’28,14,28,14′ /> </Storyboard> </BeginStoryboard> </EventTrigger> </Border.Triggers> <TextBlock> This example shows how to use the ThicknessAnimation to create an animation on the BorderThickness property of a Border. </TextBlock> </Border> </StackPanel> </Page>
What way can a custom class can be defined in XAML ?
Custom classes can be defined in the Window.Resoures of the XAML page. This can be done with the following code snippets. [XAML] <Window.Resources> <local:BoolToVisibilityConverter x:Key=”BoolToVisConverter”/> </Window.Resources> <Grid> <Button Visibility=”{Binding IsVisible,Converter={StaticResource BoolToVisConverter}}”/> </Grid>