I have experienced a bit a weird behavior of the MahApps Window when I set the AllowsTransparency to true. What I am doing is to set the Opacity of the whole window to 0.4 when the mouse leaves the window. When the mouse returns to the window area, the opacity is set back to a value of 1.0.
This works fine unless I want to maximize the MahApps window. It doesn't maximize, but makes a weird blue rectangle around half of the screen, and the window remains the same size as before (The window is resizable... and without the AllowsTransparency (in code, after InitializeComponent) everything works fine).
I have uploaded a short .gif to show what I mean:
I set the opacity with following xaml:
<EventTrigger RoutedEvent="Window.MouseLeave">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity" To="0.4" Duration="0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="Window.MouseEnter">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
I hope anyone knows a solution for this.
Thank you in advance for your help.
Ramon
Related
I have a double animation which worked well on one control. Now I want to make it universal. How do I get current canvas of a control? For example I want to use this animation on window and it always showed from 13 to 17 while I need from 'current position' to 'current position + 4'
<BeginStoryboard x:Key="SomethingWrongAnimation">
<Storyboard Storyboard.TargetProperty="(Canvas.Left)">
<DoubleAnimation From="13" To="17" Duration="0:0:0.05"
AutoReverse="True" FillBehavior="Stop" RepeatBehavior="5x"/>
</Storyboard>
</BeginStoryboard>
Instead of From and To set the By property:
<DoubleAnimation By="4" ... />
I am looking a way to animate the resizing of a window, lets say that I have a window with Height=300 and Width=300, I have 2 buttons, when I click the first button the window size must change to Height=600 and Width=600 and when I click the other button the window size must back to the original size, well I can do this simply changing the Height and Width properties, but I would like to use something like Storyboard - DoubleAnimation to give the impression that the window size is changing gradually.
I haven't used Storyboard - DoubleAnimation so if anyone can give me some tips I would appreciate it.
You cannot animate two properties in parallel Below code can help you animate the Height and Width of Window named myWindow
<Button Content="Click">
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<EventTrigger.Actions>
<BeginStoryboard >
<Storyboard RepeatBehavior="Forever" AutoReverse="False">
<DoubleAnimation Storyboard.TargetName="myWindow"
Storyboard.TargetProperty = "(Window.Height)"
To="300" Duration="0:0:5"/>
<Storyboard RepeatBehavior="Forever" AutoReverse="False">
<DoubleAnimation Storyboard.TargetName="myWindow"
Storyboard.TargetProperty = "(Window.Width)"
To="300" Duration="0:0:5"/>
</Storyboard>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Button.Triggers>
</Button>
I want to achieve in XAML using event triggers where button's style (button and text gets bigger) change when mouse enter is triggered. Then when the mouse leave event is triggered, it will get back to it's previous style.
I have already worked out on that but my problem is when a button is clicked, the style for the mouse enter must be preserved unless other button is clicked.
<Style.Triggers>
<EventTrigger RoutedEvent="Button.MouseEnter">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="LayoutTransform.ScaleX"
To="2" Duration="0:0:0.25"/>
<DoubleAnimation Storyboard.TargetProperty="LayoutTransform.ScaleY"
To="2" Duration="0:0:0.25"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
<EventTrigger RoutedEvent="Button.MouseLeave">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="LayoutTransform.ScaleX"
To="1" Duration="0:0:0.25"/>
<DoubleAnimation Storyboard.TargetProperty="LayoutTransform.ScaleY"
To="1" Duration="0:0:0.25"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Style.Triggers>
Any help is appreciated. Thanks!
First of all, thank you for all you comments. They were great and correct but I have to find a way to implement it using the standard buttons (not radio or toggle).
I was able to figure this one out. So, I thought of extending the Control button to add something like a flag to determine if the button has been clicked then handled the OnMouseLeave event.
I'm triying to hide/show a stackpanel when I click in a button. This is what I made so far:
<Button.Triggers>
<EventTrigger RoutedEvent="Mouse.PreviewMouseDown">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Height"
Storyboard.TargetName="PanelDeCampos"
From="{Binding ElementName=PanelDeCampos,Path=ActualHeight}"
To="0"
Duration="0:0:0.25" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
This animation works well, and it hides the panel when I click on it. But now I need to find a way to launch the reverse animation when the button is clicked again. Could I store the current state and decide what animation launch or something like this?
Thanks.
You can change your button to a ToggleButton and use the Checked and Unchecked routed events to set up your 2 storyboards:
<ToggleButton>
<ToggleButton.Triggers>
<EventTrigger RoutedEvent="Checked">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Height"
Storyboard.TargetName="PanelDeCampos"
From="{Binding ElementName=PanelDeCampos,Path=ActualHeight}"
To="0"
Duration="0:0:0.25" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="Unchecked">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Height"
Storyboard.TargetName="PanelDeCampos"
From="0"
Duration="0:0:0.25"
To="1000" /> <!-- or whatever height you want-->
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</ToggleButton.Triggers>
</ToggleButton>
What about a little trick:
Together with the storyboard you have in place now, you are hidding the current button and setting another button (which looks the same) visible.
The other button has the reverse storyboard, and reverse button visibility settings.
With that you don't have to worry about a state, and you can do it only in XAML.
Other Idea would be to handle the click in the code behind, maintain a flag there, and trigger the storyboard from the code. As this is a view-only functionality I don't see a conflict with MVVM.
I have a WPF usercontrol set up in XAML with the following Triggers:
<UserControl.Triggers>
<EventTrigger RoutedEvent="GotFocus">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation To="1.5" Storyboard.TargetName="ImageContent" Storyboard.TargetProperty="RenderTransform.Children[1].ScaleX" Duration="0:0:0.8" />
<DoubleAnimation To="1.5" Storyboard.TargetName="ImageContent" Storyboard.TargetProperty="RenderTransform.Children[1].ScaleY" Duration="0:0:0.8" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="LostFocus">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation To="1" Storyboard.TargetName="ImageContent" Storyboard.TargetProperty="RenderTransform.Children[1].ScaleX" Duration="0:0:0.8" />
<DoubleAnimation To="1" Storyboard.TargetName="ImageContent" Storyboard.TargetProperty="RenderTransform.Children[1].ScaleY" Duration="0:0:0.8" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</UserControl.Triggers>
The Animation is working fine but unfortunately the Triggers arent working as expected. The GotFocus trigger only fires if i Right-Click my Control or if i Click a Button that is contained within the UserControl.
I have created an EventHandler for the GotFocus event in code and that seems to fire in the right places.
Edit: If I change it to Fire on MouseEnter / Leave it also works as expected
Edit2: I foudn out that this behaviour is surfacing because the Control gets focus, but loses the focus again right away. I fixed it by adding some code, that checks if the source of the Event is the UserControl or something else.
Any hints on why this is happening would be appreciated.
Try settings Focusable="True" on the UserControl.