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Rotate image inside a button UWP - c#

I'm trying to rotate a font icon inside a button 90° in the first click and back to 0° on the second click.
Currently I have:
<Page.Resources>
<Storyboard x:Name="RotateButton90Degrees">
<DoubleAnimation
EnableDependentAnimation="True"
Storyboard.TargetName="ShowSubTasks_ButtonRotateTransform"
Storyboard.TargetProperty="Angle"
From="0"
To="90"
Duration="350" />
</Storyboard>
</Page.Resources>
<Button
x:Name="ShowSubTasks_Button"
Background="Transparent">
<interactivity:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="Click">
<media:ControlStoryboardAction Storyboard="{StaticResource RotateButton90Degrees}" />
</core:EventTriggerBehavior>
</interactivity:Interaction.Behaviors>
<FontIcon
FontFamily="Segoe MDL2 Assets"
Glyph=""
RenderTransformOrigin="0.5, 0.5">
<FontIcon.RenderTransform>
<RotateTransform x:Name="ShowSubTasks_ButtonRotateTransform" />
</FontIcon.RenderTransform>
</FontIcon>
</Button>
The problem is that the app crashes when I click the button (it's not finding the ShowSubTasks_ButtonRotateTransform). The second is that I don't know how to revert the rotation effect after the first click (first click -> 90°, second click -> 0°, third click -> 90° and so on).
Any help would be appreciated.

Ok i got the problem, the thing is that im running all that code inside a DataTemplate ... So that explains why its crashing. For the fix i used what #Dishant suggested, created two storyboards and with a DataTriggerBehavior i change the angle of the rotate transform
<StackPanel.Resources>
<Storyboard x:Name="RotateButtonTo90Degrees">
<DoubleAnimation
EnableDependentAnimation="True"
Storyboard.TargetName="ShowSubTasks_ButtonRotateTransform"
Storyboard.TargetProperty="Angle"
From="0"
To="90"
Duration="0:0:0.1" />
</Storyboard>
<Storyboard x:Name="RotateButtonTo0Degrees">
<DoubleAnimation
EnableDependentAnimation="True"
Storyboard.TargetName="ShowSubTasks_ButtonRotateTransform"
Storyboard.TargetProperty="Angle"
From="90"
To="0"
Duration="0:0:0.1" />
</Storyboard>
</StackPanel.Resources>
<Button
Background="Transparent"
Visibility="{Binding HasSubTasks, Mode=OneWay, Converter={StaticResource BoolToVisibilityConverter}}">
<interactivity:Interaction.Behaviors>
<core:DataTriggerBehavior Binding="{Binding ShowSubTasks, Mode=OneWay}" Value="True">
<media:ControlStoryboardAction Storyboard="{StaticResource RotateButtonTo90Degrees}" />
</core:DataTriggerBehavior>
<core:DataTriggerBehavior Binding="{Binding ShowSubTasks, Mode=OneWay}" Value="False">
<media:ControlStoryboardAction Storyboard="{StaticResource RotateButtonTo0Degrees}" />
</core:DataTriggerBehavior>
</interactivity:Interaction.Behaviors>
<FontIcon
FontFamily="Segoe MDL2 Assets"
Glyph=""
RenderTransformOrigin="0.5, 0.5">
<FontIcon.RenderTransform>
<RotateTransform x:Name="ShowSubTasks_ButtonRotateTransform" />
</FontIcon.RenderTransform>
</FontIcon>
</Button>
Also as #MartinZikmund suggested, i needed to change the duration from 350 to something like 0:0:0.5

In my case the app does not crash, but the icon does not rotate, because the duration is set to 350, which basically means 350 hours. If you change this value to something like 0:0:0.5, it should rotate in 0.5 seconds. To do the reverse animation, you would probably need to set the animation target programatically, but in such case you could just run the storyboard itself in the Click event handler.
If you are targeting Windows 10 15063 or higher, you can use Implicit Animations in XAML. In that case you could set up an implicit animation on the rotation of the icon and then just set the rotation property in the code-behind accordingly and implicit animation would take care of the animation itself.

Related

Basically I have a WPF datagrid, and I want to add a flashing outline to a specific cell in XAML via binding that will make this visible. I know how to do this except the flashing part.
How can I do that so that the rectangle outline flashes for a specific duration like 2 seconds, so it goes from opacity = 0 to 1 and then 0 and so on.
Does WPF have a mechanism for this?
<Border BorderThickness="1" BorderBrush="Red">
<Rectangle Fill="#FF5A9AE0"
Stretch="UniformToFill"
ClipToBounds="True"/>
</Border>

This will flash the border on and off.
<Border Name="MyBorder" BorderThickness="1" BorderBrush="Red">
<Border.Triggers>
<EventTrigger RoutedEvent="Border.Loaded">
<BeginStoryboard>
<Storyboard>
<ThicknessAnimationUsingKeyFrames
Storyboard.TargetName="MyBorder"
Storyboard.TargetProperty="BorderThickness"
AutoReverse="True" RepeatBehavior="Forever">
<DiscreteThicknessKeyFrame KeyTime="0:0:00.00" Value="1" />
<DiscreteThicknessKeyFrame KeyTime="0:0:00.25" Value="5" />
<DiscreteThicknessKeyFrame KeyTime="0:0:00.50" Value="1" />
</ThicknessAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Border.Triggers>
<Rectangle Fill="#FF5A9AE0" Stretch="UniformToFill" ClipToBounds="True" />
</Border>
There are lots of animation options, so please have a look at https://learn.microsoft.com/en-us/dotnet/desktop/wpf/graphics-multimedia/animation-overview?view=netframeworkdesktop-4.8 for details/ideas.

I'm trying to make a simple animation - when mouse cursor is on button I want to add blur effect on that button.
So far I have this.:
<Button x:Name="button_Copy" Content="Leaderboard" HorizontalAlignment="Left" Margin="311,217,0,0" VerticalAlignment="Top" Width="139" Height="34" Background="{x:Null}" BorderBrush="{x:Null}" FontSize="22" FontWeight="Bold" Foreground="#FFE2DBDB" IsHitTestVisible="True" Click="button_Copy_Click">
<Button.Triggers>
<EventTrigger RoutedEvent="MouseEnter">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation From="10" To="0" Duration="0:0:0.1"
Storyboard.TargetName="blurEffect" Storyboard.TargetProperty="Radius"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button>
Build is succesfull, but when I take cursor over that button program immediately crashes... Any idea how to fix this?

I see you probably took your example from here.
You are missing the object BlurEffect as shown within the TextBox item as below:
<TextBlock Name="TxtSample" TextAlignment="Center" VerticalAlignment="Center" HorizontalAlignment="Center" Text="This is a sample and first test freetext">
<TextBlock.Effect>
<BlurEffect Radius="10" x:Name="blurEffect"/>
</TextBlock.Effect>
</TextBlock>

Im recently working on some simple Imageviewer.
Now it came to my mind, it might be a nice feature, to do some context-sensitve actions like Zooming and rotating.
To implement these functions is not my problem, but the ContextMenu is.
I've decided to not use a ContextMenu-Element, instead im going to use a popup.
Reasons for PopUp:
Less Styling
Better Positioning
IsOpen is Bindable (ContextMenu is NOT bindable on IsOpen against all Articles regarding this)
Here comes the trouble:
<Image x:Name="PART_ImgCurrent" VerticalAlignment="Center" HorizontalAlignment="Center" Stretch="Uniform" Grid.Row="0" Grid.Column="0"
Source="{Binding ElementName=PART_PreviewPanel, Path=SelectedItem.Source}">
<Image.LayoutTransform>
<RotateTransform Angle="0"></RotateTransform>
</Image.LayoutTransform>
<Image.Triggers>
<EventTrigger RoutedEvent="Loaded">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="PART_ImgCurrent" Storyboard.TargetProperty="Opacity" From="0" To="1" Duration="0:0:3" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Image.Triggers>
</Image>
<Popup IsHitTestVisible="False" Focusable="False" PlacementTarget="{Binding ElementName=PART_ImgCurrent}" AllowsTransparency="True" StaysOpen="True"
IsOpen="{Binding ElementName=PART_ImgCurrent, Path=IsMouseOver, Mode=OneWay}"
Placement="Right" HorizontalOffset="-42" VerticalOffset="2">
<StackPanel Opacity="0.5" VerticalAlignment="Stretch">
<Button Content="Ugly Button" Height="40" Width="40"></Button>
<Button Content="Ugly Button" Height="40" Width="40"></Button>
<Button Content="Ugly Button" Height="40" Width="40"></Button>
</StackPanel>
</Popup>
As you can see, im binding IsOpen of Popup to IsMouseOver on Image which results in a funny Disco-BlinkenLights-Behavior when i try to click a button inside the Popup.
What has this to do with the Title?
AcrobatReader has this
This is almost exactly the behavior im looking for. How is this thing called?
Or had someone ever similar issues and could provide a solution?

Sorry for the delay, soon as I thought I had a second I got busy again. Anyway, here's one of several ways I can think of accomplishing your goal, give it a shot. I sort of assumed it may not be just images you want this for and if you threw the resource stuff in a dictionary and kept your naming consistent (or even better, just target the nested UIElement) you could use it all over the place. Notice the Grid is acting as what would be the Image in this example.
I generally make things open for future added interactions and stuff, so in this case I would probably just make the image source the background brush for Grid or place it as a child. That way if you decide to add other objects in there or say other effects and stuff you've got a good start point.
Anyway I digress, so try out the concept example below and see if it's what you're after. If not, like I said there's several other ways I can think of to accomplish your goal so just let me know. :)
<!-- HitTestVisibility Area -->
<Grid x:Name="ImagePlaceholder"
Height="500" Width="500"
Background="LightBlue">
<Grid.Resources>
<Storyboard x:Key="OnMouseEnter">
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)"
Storyboard.TargetName="FakePopUp">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="OnMouseLeave">
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)"
Storyboard.TargetName="FakePopUp">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Collapsed}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</Grid.Resources>
<Grid.Triggers>
<EventTrigger RoutedEvent="UIElement.MouseEnter">
<BeginStoryboard Storyboard="{StaticResource OnMouseEnter}"/>
</EventTrigger>
<EventTrigger RoutedEvent="UIElement.MouseLeave">
<BeginStoryboard Storyboard="{StaticResource OnMouseLeave}"/>
</EventTrigger>
</Grid.Triggers>
<!-- Overlay -->
<Border Name="FakePopUp" Visibility="Collapsed"
Margin="0,0,0,25" Background="SlateGray"
Height="50" CornerRadius="20" Padding="10"
HorizontalAlignment="Center" VerticalAlignment="Bottom">
<StackPanel Orientation="Horizontal">
<Button Content="Eins Bier"/>
<Button Content="Zwei Bier" Margin="10,0"/>
<Button Content="Drei Bier"/>
</StackPanel>
</Border>
</Grid>
I went with Storyboards attached to the parent instead of direct triggers with TargetName like I said, because I could think of a bunch of other instances features might want to be added that would make sense. Even something simple like adding a transition duration for a nice fade effect or maybe a translate y to slide it up while fading etc, etc, etc.
Anyway, hope this helps. Cheers!

I want to create marquee effect in WP8 application.
To accomplish this I placed StackPanel inside ScrollViewer and I'm trying to use DoubleAnimation on TranslateTransform.X property.
Code:
<phone:PhoneApplicationPage.Resources>
<Storyboard x:Name="Scroll" RepeatBehavior="Forever" AutoReverse="True">
<DoubleAnimation From="0" To="100" Storyboard.TargetName="transform" Storyboard.TargetProperty="X" Duration="0:0:5" />
</Storyboard>
</phone:PhoneApplicationPage.Resources>
<Grid x:Name="LayoutRoot">
...
<ScrollViewer Height="80" VerticalScrollBarVisibility="Disabled" HorizontalScrollBarVisibility="Hidden">
<StackPanel Orientation="Horizontal">
<StackPanel.RenderTransform>
<TranslateTransform x:Name="transform" />
</StackPanel.RenderTransform>
<Image Source="/Assets/logo1.png"></Image>
<Image Source="/Assets/logo2.png"></Image>
<Image Source="/Assets/logo3.png"></Image>
<Image Source="/Assets/logo4.png"></Image>
<Image Source="/Assets/logo5.png"></Image>
</StackPanel>
</ScrollViewer>
</Grid>
Unfortunately when calling Scroll.Begin() from code-behind in page Loaded event handler I'm getting exception: System.InvalidOperationException: Cannot resolve TargetName transform.
What I'am doing wrong?
Animation runs when I place StackPanel directly in LayoutRoot but not when it's child of ScrollViewer.

I think the exception is explanatory. Like you apply storyboard on some UI element but there is no element named "transform" in your xaml to which this storyboard will be going to be applied.
so this property Storyboard.TargetName should be name of the UI element that has to be transformed.
In your case if you have to simply give your StackPanel a name say MyStackPanel and then put this name in place of transform in your storyboard code.
<StackPanel Orientation="Horizontal" Name="MyStackPanel">
<StackPanel.RenderTransform>
<TranslateTransform x:Name="transform" />
</StackPanel.RenderTransform>
...
You storyboard should be changedin this way..
<phone:PhoneApplicationPage.Resources>
<Storyboard x:Name="Scroll" RepeatBehavior="Forever" AutoReverse="True">
<DoubleAnimation From="0" To="100" Storyboard.TargetName="MyStackPanel" Storyboard.TargetProperty="X" Duration="0:0:5" />
</Storyboard>
</phone:PhoneApplicationPage.Resources>
Important :-It would be much better if you just use Blend for making a simple animation and then see how the animation code generated in the page Xaml. You will got all of your answers :)

I am working on a c# wpf project and I have run in to a problem relating to firing an trigger within the XAML.
What I am trying to achieve is when the drags a file into the grid, it should animate the background colour change but for some reason it keeps on throwing an exception as soon as I run the program. I am getting the following error:
'Provide value on
'System.Windows.Baml2006.TypeConverterMarkupExtension' threw an
exception.' Line number '9' and line position '14'.
Below is the XAML code
<UserControl x:Class="ReportReader.UserControls.ReportDragDropControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008">
<Grid AllowDrop="True" DragDrop.DragOver="Grid_DragOver"
DragDrop.DragEnter="Grid_DragEnter" DragDrop.Drop="Grid_Drop" DragDrop.DragLeave="Grid_DragLeave">
<Grid.Triggers>
<EventTrigger RoutedEvent="Grid.DragEnter">
<BeginStoryboard>
<Storyboard>
<ColorAnimation To="#cecece" Storyboard.TargetProperty="(Grid.BackgroundColor).(SolidColorBrush.Color)" FillBehavior="Stop" Duration="0.0.1" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Grid.Triggers>
<TextBlock Margin="12,12,20,12" Name="txtDragDropStatus" Text="Drag file here or use file menu to load your report" TextAlignment="Center" FontSize="30" FontWeight="Bold" TextWrapping="WrapWithOverflow" Width="835" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Grid>
</UserControl>
Thanks for any help you can provide.

There are two errors in your XAML file -
BackgroundColor is not a Dependency Property, instead use Background.
0.0.1 is not a valid value for TimeSpan. It should be 0:0:1.
This will work fine -
<ColorAnimation To="#cecece"
Storyboard.TargetProperty="(Grid.Background)
.(SolidColorBrush.Color)"
FillBehavior="Stop" Duration="0:0:1" />
Also, to allow animation on background property, you should set it to some default value.
<Grid Background="White"/>
I tried with this sample and its working fine on drag enter -
<Grid AllowDrop="True" Background="White" DragDrop.DragEnter="Grid_DragEnter">
<Grid.Triggers>
<EventTrigger RoutedEvent="Grid.DragEnter">
<BeginStoryboard>
<Storyboard>
<ColorAnimation To="#cecece"
Storyboard.TargetProperty="(Grid.Background).
(SolidColorBrush.Color)"
FillBehavior="Stop" Duration="0:0:1" />
</Storyboard>
</BeginStoryboard>
/EventTrigger>
</Grid.Triggers>
<TextBlock Margin="12,12,20,12" Name="txtDragDropStatus"
Text="Drag file here or use file menu to load your report"/>
</Grid>