The height and width properties of the WPF window remain zero after running Storyboard-CodePudding

In order for my app's storyboard to work properly, I must divide the window's height and width by two and then use those values as the CenterY and CenterX values.

XAML:

<Window x:Name="GanjAsemanMainWindow" x:Class="Ganj_Aseman.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Ganj_Aseman"
        mc:Ignorable="d"
        Loaded="GanjAsemanMainWindow_Loaded" AllowsTransparency="True" Background="Transparent" FontSize="13" Height="535" ResizeMode="CanResizeWithGrip" Title="MainWindow" Width="764" WindowStyle="None">
    <Window.RenderTransform>
        <RotateTransform CenterX="{Binding}" CenterY="{Binding}" Angle="{Binding}"/>
    </Window.RenderTransform>
    <Window.Resources>
        <Storyboard x:Key="WindowRotation">
            <DoubleAnimation BeginTime="00:00:00" SpeedRatio="2.5" Duration="00:00:2" From="{Binding Path=Height,ElementName=GanjAsemanMainWindow}" To="0" AutoReverse="False" Storyboard.TargetName="GanjAsemanMainWindow" Storyboard.TargetProperty="Height"/>
            <DoubleAnimation BeginTime="00:00:00" SpeedRatio="2.5" Duration="00:00:2" From="{Binding Path=Width,ElementName=GanjAsemanMainWindow}" To="0" AutoReverse="False" Storyboard.TargetName="GanjAsemanMainWindow" Storyboard.TargetProperty="Width"/>
            <DoubleAnimation BeginTime="00:00:00" SpeedRatio="3.5" Duration="00:00:2" From="0" To="360" AutoReverse="False" Storyboard.TargetName="GanjAsemanMainWindow" Storyboard.TargetProperty="(UIElement.RenderTransform).(RotateTransform.Angle)"/>
        </Storyboard>
    </Window.Resources>
    <Grid>
        <Image x:Name="MinimizeIconImage" PreviewMouseLeftButtonDown="MinimizeIconImage_PreviewMouseLeftButtonDown" MouseEnter="MinimizeIconImage_MouseEnter" MouseLeave="MinimizeIconImage_MouseLeave" GotFocus="MinimizeIconImage_GotFocus" LostFocus="MinimizeIconImage_LostFocus" Focusable="True" FocusVisualStyle="{x:Null}" Cursor="Hand" Height="47"  VerticalAlignment="Top" Source="{Binding}" Margin="0,2,67,0" HorizontalAlignment="Right" Width="52"/>
    </Grid>
</Window>

C#:

private void MinimizeIconImage_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
    //I checked the height and width values after resizing using "Grip" here
    RotateTransform RT = new RotateTransform(0, Width/2 ,Height/2);
    GanjAsemanMainWindow.RenderTransform = RT;
    (Resources["WindowRotation"] as Storyboard).Begin();
}

When the storyboard first runs and the height and width values become zero, I resize the window using the Grip icon, but the values of those two properties do not change and remain zero.

Best regards,

Reza Jaferi

CodePudding user response：

As is mentioned in this answer, Width/Height is the requested size. In this case, we need to use ActualWidth/ActualHeight.

XAML:

From="{Binding Path=ActualHeight,ElementName=GanjAsemanMainWindow}"
From="{Binding Path=ActualWidth,ElementName=GanjAsemanMainWindow}"

C#:

RotateTransform RT = new RotateTransform(0, ActualWidth / 2, ActualHeight / 2);