Is it possible to animate just the part of the value of textbox/label. For example, txt1.text = "This is a Sample";. then I want to animate the word "Sample" to change its color/opacity etc. If you get what i mean. If it is possible please demonstrate the code Thanks!
I think you can't do it with a TextBox as its text has no formatting options. Not sure if the Label allows it, but the TextBlock might help you:
<TextBlock>
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Loaded">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="scb01"
Storyboard.TargetProperty="Color"
From="White"
To="Black"
Duration="0:0:0.5"
AutoReverse="True"
RepeatBehavior="Forever" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
One <Run>
<Run.Foreground>
<SolidColorBrush x:Name="scb01"
Color="Red" />
</Run.Foreground>
Two</Run> Three
</TextBlock>
Related
I have a textblock which should only show 2 lines of the text, while it is unselected. As soon as it gets selected, I want it to expand smoothly.
I started with something like:
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetName="Second"
Storyboard.TargetProperty="(TextBlock.MaxHeight)"
To="50.0" Duration="0:0:0.5" />
</Storyboard>
</BeginStoryboard>
But the issue here is, that I don't know how big the text is.
You should be able to use From='0' instead, which would start the animation with a value of 0 and end with whatever the value of MaxHeight is. However, that raises a different problem, as MaxHeight defaults to infinity, which would make the animation far too fast. Adding an ObjectAnimationUsingKeyframes at the start that sets MaxHeight to ActualHeight might work to resolve this. Something like this:
<BeginStoryboard>
<Storyboard>
<ObjectAnimationUsingKeyframes
Storyboard.TargetName='Second'
Storyboard.TargetProperty='(TextBlock.MaxHeight)'>
<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{Binding TargetName=Second, Path=ActualHeight}" />
</ObjectAnimationUsingKeyframes>
<DoubleAnimation
Storyboard.TargetName="Second"
Storyboard.TargetProperty="(TextBlock.MaxHeight)"
From="0" Duration="0:0:0.5" />
</Storyboard>
</BeginStoryboard>
You can use DoubleAnimation to implement this. I have implemented this in a sample application.
<Window.Resources>
<Storyboard x:Key="OnGotFocus">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="textBox" Storyboard.TargetProperty="(FrameworkElement.Height)">
<EasingDoubleKeyFrame KeyTime="0:0:2">
<EasingDoubleKeyFrame.Value>
<System:Double>NaN</System:Double>
</EasingDoubleKeyFrame.Value>
</EasingDoubleKeyFrame>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="OnLostFocus">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="textBox" Storyboard.TargetProperty="(FrameworkElement.Height)">
<EasingDoubleKeyFrame KeyTime="0">
<EasingDoubleKeyFrame.Value>
<System:Double>NaN</System:Double>
</EasingDoubleKeyFrame.Value>
</EasingDoubleKeyFrame>
<EasingDoubleKeyFrame KeyTime="0:0:2" Value="30" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</Window.Resources>
<Window.Triggers>
<EventTrigger RoutedEvent="UIElement.GotFocus" SourceName="textBox">
<BeginStoryboard Storyboard="{StaticResource OnGotFocus}" />
</EventTrigger>
<EventTrigger RoutedEvent="UIElement.LostFocus" SourceName="textBox">
<BeginStoryboard x:Name="OnLostFocus_BeginStoryboard" Storyboard="{StaticResource OnLostFocus}" />
</EventTrigger>
</Window.Triggers>
Your code for textbox should be :
<TextBox x:Name="textBox"
Height="30"
HorizontalAlignment="Right"
Text="Hello World" />
This will animate the textbox to a specified height as soon as it gets focussed. I have added an animation to collapse it as well when it loses focus.
Hope this helps you.
How i can enlarge an Ellipse in WPF, preffering using Margins, just like i did in my wrong code :D ? how i can do that, you will understand from the "wrong code"
<DoubleAnimation Duration="00:00:01" Storyboard.TargetProperty="Margin" From="789,-189,762,899" To="23,-189,-4,-637"/>
http://i.stack.imgur.com/Ryn31.png
Use ThicknessAnimation instead of DoubleAnimation :)
I tried enlarging an Ellipse by altering Margin values but did not see any visual change.
I see this question already has been answered, in any case, here is an example of how it is possible to animate the height and Width of an Ellipse in WPF using markup in XAML:
<Ellipse Height="100" Width="100" Fill="Blue" Stroke="Black">
<Ellipse.Triggers>
<EventTrigger RoutedEvent="Loaded">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation RepeatBehavior="Forever" Storyboard.TargetProperty="Width" From="100" To="300" Duration="00:00:02" />
<DoubleAnimation RepeatBehavior="Forever" Storyboard.TargetProperty="Height" From="100" To="300" Duration="00:00:02" />
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Ellipse.Triggers>
</Ellipse>
I am trying to move an image in wpf.
The image should follow an ellipse as a path.
When the animation is complete, it should start again immediately.
(for example a planet makes a revolution)
If I am right i should use DoubleAnimation.
The question is what should I write to the DoubleAnimation tag.
Here is the code I wrote so far:
<Image Source="t:\\moon.jpg" Width="50" Height="50">
<Image.Triggers>
<EventTrigger>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation>
</DoubleAnimation>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Image.Triggers>
</Image>
I think you should use PathAnimation not DoubleAnimation.
Example From MSDN:
<EventTrigger RoutedEvent="Button.Loaded">
<BeginStoryboard>
<Storyboard>
<MatrixAnimationUsingPath
Storyboard.TargetName="ButtonMatrixTransform"
Storyboard.TargetProperty="Matrix"
DoesRotateWithTangent="True"
Duration="0:0:5"
RepeatBehavior="Forever" >
<MatrixAnimationUsingPath.PathGeometry>
<PathGeometry
Figures="F1 M 147.5,0.5C 228.686,0.5 294.5,24.4528 294.5,54C 294.5,83.5472 228.686,107.5 147.5,107.5C 66.3141,107.5 0.5,83.5472 0.5,54C 0.5,24.4528 66.3142,0.5 147.5,0.5 Z"
PresentationOptions:Freeze="True" />
</MatrixAnimationUsingPath.PathGeometry>
</MatrixAnimationUsingPath>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
You can learn about Path Markup Syntax here
I have a textblock which should react for changing its text (it must display text for few seconds, and then dissapear).
<TextBlock Text="{Binding Path=OperationMessage, NotifyOnValidationError=True}" x:Name="label_OperationMessage" Visibility="Collapsed" HorizontalAlignment="Right" Margin="3,3,3,3" >
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity" Duration="0:0:0" To="1.0" />
<DoubleAnimation Storyboard.TargetProperty="Opacity" Duration="0:0:2" From="1.0" To="0.0" BeginTime="0:0:5" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
When I launch my app I get error :
Failed to assign to property 'System.Windows.EventTrigger.RoutedEvent'.
on the line
<EventTrigger RoutedEvent="Binding.TargetUpdated">
What is wrong with this code?
The only event supported by Silverlight for use in the Triggers property is the Loaded event. Anything else will result in this exception.
To acheive this sort of Xaml event logic you can download the Blend SDK which contains all manner of useful features like this. In your case you are looking for the PropertyChangedTrigger.
I would like to zoom in on a Image when Image.MouseEnter fires and then zoom out when Image.MouseLeave fires.
I thought of creating a Trigger, but no luck.
This is what i tried so far:
<Image Name="logo" Source="{Binding Path=ImagePath}"
Width="50" Height="50">
<Image.RenderTransform>
<ScaleTransform x:Name="TransRotate" />
</Image.RenderTransform>
<Image.Triggers>
<EventTrigger RoutedEvent="Image.MouseEnter">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="TransRotate"
Storyboard.TargetProperty="ScaleX"
From="0" To="100"
BeginTime="0:0:0"
Duration="0:0:10"
AutoReverse="False"/>
<DoubleAnimation Storyboard.TargetName="TransRotate"
Storyboard.TargetProperty="ScaleY"
From="0" To="100"
BeginTime="0:0:0"
Duration="0:0:10"
AutoReverse="False"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Image.Triggers>
</Image>
Is this the correct way, or is there a better way?
I would remove the From property, this makes the animation jump, apart from that you just seem to be lacking the reverse animations on MouseLeave. Also to center the zoom you can set the RenderTransformOrigin of the Image to 0.5,0.5.
Instead of using those two events i usually prefer a trigger on IsMouseOver with Enter and ExitActions.
If you want to retain the space the image takes you can place it in a container with fixed size and set ClipToBounds to true.