I have a feature that allows a user to switch between the FrontFacing and Primary cameras on a device. During the switching process, I'd like to show a ProgressBar and TextBlock to the user. For some reason, I cannot get these to show up in the View, and the only thing that shows during the switching process is a frozen image of the nonrotated VideoBrush
MainPage.xaml
<Grid.RowDefinitions>
<RowDefinition Height="72"/>
<RowDefinition Height="*"/>
<RowDefinition Height="68"/>
<RowDefinition Height="72"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="72"/>
<ColumnDefinition Width=".33*"/>
<ColumnDefinition Width=".33*"/>
<ColumnDefinition Width=".33*"/>
<ColumnDefinition Width="72"/>
</Grid.ColumnDefinitions>
<!-- Center this on the screen -->
<Canvas x:Name="VideoCanvas" Grid.Row="0" Grid.RowSpan="4" Grid.ColumnSpan="5"
VerticalAlignment="Center" HorizontalAlignment="Center">
<Canvas.Background>
<VideoBrush x:Name="videoBrush">
<VideoBrush.RelativeTransform>
<CompositeTransform x:Name="videoBrushTransform"
CenterX="0.5" CenterY="0.5"/>
</VideoBrush.RelativeTransform>
</VideoBrush>
</Canvas.Background>
</Canvas>
...
<StackPanel Grid.Row="1" Grid.ColumnSpan="5" VerticalAlignment="Center">
<ProgressBar x:Name="progressIndicator" IsIndeterminate="False" Background="Transparent"/>
<TextBlock x:Name="modeChangeTextBlock" Margin="12"
VerticalAlignment="Top" HorizontalAlignment="Center" FontSize="28"
Foreground="{StaticResource PhoneSubtleBrush}"/>
</StackPanel>
MainPage.xaml.cs
void sensor_Click(object sender, EventArgs e)
{
CameraType type = camera.CameraType;
//Switch to other camera, if available
if(type == CameraType.Primary)
{
if(PhotoCamera.IsCameraTypeSupported(CameraType.FrontFacing) == true)
{
ShowProgress("Switching cameras");
UninitializeCamera();
InitializeCamera(CameraType.FrontFacing);
HideProgress();
}
}
else
{
if(PhotoCamera.IsCameraTypeSupported(CameraType.Primary) == true)
{
ShowProgress("Switching cameras");
UninitializeCamera();
InitializeCamera(CameraType.Primary);
HideProgress();
}
}
}
...
private void ShowProgress(String msg)
{
progressIndicator.IsIndeterminate = true;
modeChangeTextBlock.Text = msg;
//progressIndicator.Visibility = Visibility.Visible;
}
private void HideProgress()
{
progressIndicator.IsIndeterminate = false;
modeChangeTextBlock.Text = "";
//progressIndicator.Visibility = Visibility.Collapsed;
}
EDIT * added below existing xaml code for testing
<Rectangle x:Name="cameraSwitchingFill" Visibility="Visible"
Fill="{StaticResource SelfiePageBackgroundColorBrush}"
Grid.Row="0" Grid.Column="0" Grid.RowSpan="4" Grid.ColumnSpan="5"/>
<StackPanel Grid.Row="1" Grid.ColumnSpan="5" VerticalAlignment="Center">
<ProgressBar x:Name="progressIndicator" IsIndeterminate="True" Background="Transparent"/>
<TextBlock x:Name="modeChangeTextBlock" Margin="12"
VerticalAlignment="Top" HorizontalAlignment="Center" FontSize="28"
Foreground="{StaticResource PhoneSubtleBrush}" Text="test"/>
</StackPanel>
The added edit is an attempt to see why the progressbar is not showing during camera switching. Setting everything to be seen on the screen, when first navigating to this page all I see is the cameraSwitchingFill rectangle, with no ProgressBar or TextBlock over it (although in the designer I can see these just fine). Upon switching the cameras, (as expected) I see the rectangle but no ProgressBar or TextBlock.
I then went back to not show the edits and modified
void sensor_Click(object sender, EventArgs e)
{
//Switch to other camera, if available
CameraType type = camera.CameraType;
if(type == CameraType.Primary)
{
if(PhotoCamera.IsCameraTypeSupported(CameraType.FrontFacing) == true)
{
ShowProgress(AppResources.CapturePage_SwitchingCameras);
cameraSwitchingFill.Visibility = Visibility.Visible;
UninitializeCamera();
InitializeCamera(CameraType.FrontFacing);
cameraSwitchingFill.Visibility = Visibility.Collapsed;
HideProgress();
}
}
else
{
if(PhotoCamera.IsCameraTypeSupported(CameraType.Primary) == true)
{
ShowProgress(AppResources.CapturePage_SwitchingCameras);
cameraSwitchingFill.Visibility = Visibility.Visible;
UninitializeCamera();
InitializeCamera(CameraType.Primary);
cameraSwitchingFill.Visibility = Visibility.Collapsed;
HideProgress();
}
}
}
So the results are when I permanently make the rectangle and Progressbar show on the screen, Only the rectangle is shown until the first camera switch click event occurs, and thereafter neither the rectangle or progressbar will show. Also, the frozen image remains on the screen during the switching even though the rectangle and progressbar, declared below the videobrush implementation in xaml, are set to visible during this time.
May this will help you. try this
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!-- Center this on the screen -->
<Canvas x:Name="VideoCanvas" Grid.Row="0" >
<Canvas.Background>
<VideoBrush x:Name="videoBrush" >
<VideoBrush.RelativeTransform>
<CompositeTransform x:Name="videoBrushTransform"
CenterX="0.5" CenterY="0.5"/>
</VideoBrush.RelativeTransform>
</VideoBrush>
</Canvas.Background>
</Canvas>
<StackPanel Grid.Row="0" VerticalAlignment="Center">
<TextBlock x:Name="modeChangeTextBlock" Margin="12" VerticalAlignment="Top" HorizontalAlignment="Center" FontSize="28" Foreground="{StaticResource PhoneSubtleBrush}"/>
<ProgressBar x:Name="progressIndicator" IsIndeterminate="False" Grid.RowSpan="4" />
</StackPanel>
</Grid>
There is nothing wrong in the declarations. Its just that the order at which you are making the declarations isnt correct.
the overlapping in grid is done by the order at which you write your xaml
In the xaml given the Panel containing textblock and progressbar is placed at first position and then the panel containing the Videobrush comes which overlaps the first panel(The main reason behind the invisibility). So, if you want the panel to be visible just declare it one level below the panel containing the videobrush. This woulf help the panel having progressbar to overlap the panel containing the videobrush.
and hence the updated declarations now becomes
<Grid.RowDefinitions>
<RowDefinition Height="72"/>
<RowDefinition Height="*"/>
<RowDefinition Height="68"/>
<RowDefinition Height="72"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="72"/>
<ColumnDefinition Width=".33*"/>
<ColumnDefinition Width=".33*"/>
<ColumnDefinition Width=".33*"/>
<ColumnDefinition Width="72"/>
</Grid.ColumnDefinitions>
<!-- Center this on the screen -->
<Canvas x:Name="VideoCanvas" Grid.Row="0" Grid.RowSpan="4" Grid.ColumnSpan="5">
<Canvas.Background>
<VideoBrush x:Name="videoBrush" >
<VideoBrush.RelativeTransform>
<CompositeTransform x:Name="videoBrushTransform"
CenterX="0.5" CenterY="0.5"/>
</VideoBrush.RelativeTransform>
</VideoBrush>
</Canvas.Background>
</Canvas>
<StackPanel Grid.Row="1" Grid.ColumnSpan="5" VerticalAlignment="Center">
<ProgressBar x:Name="progressIndicator" IsIndeterminate="True" Background="Transparent"/>
<TextBlock x:Name="modeChangeTextBlock" Margin="12" Text="loading"
VerticalAlignment="Top" HorizontalAlignment="Center" FontSize="28"
Foreground="White"/>
</StackPanel>
Hope this helps.
Related
I have following WPF XAML file,
<Window x:Class="Program"
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:Program"
mc:Ignorable="d"
Title="Print Preview" Height="40820.962" Width="2135.146">
<Grid Margin="10,10,2,-21" Height="40801" VerticalAlignment="Top">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="131*"/>
<RowDefinition Height="40670*"/>
</Grid.RowDefinitions>
<Grid HorizontalAlignment="Left" Height="3438" Margin="20,126,0,0" VerticalAlignment="Top" Width="2095" Grid.RowSpan="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="500*"/>
<ColumnDefinition Width="1072*"/>
<ColumnDefinition Width="523*"/>
</Grid.ColumnDefinitions>
<Label x:Name="label5" Content="Here" Grid.Column="1" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" RenderTransformOrigin="-7.455,-0.374" Height="58" Width="171" FontSize="16"/>
</Grid>
<Grid HorizontalAlignment="Right" Height="432" Margin="0,3453,1605,0" Grid.Row="1" VerticalAlignment="Top" Width="490" RenderTransformOrigin="0.62,1.205">
<Grid.RowDefinitions>
<RowDefinition Height="143*"/>
<RowDefinition Height="136*"/>
<RowDefinition Height="153*"/>
</Grid.RowDefinitions>
</Grid>
<Grid HorizontalAlignment="Right" Height="452" Margin="0,3433,1605,0" Grid.Row="1" VerticalAlignment="Top" Width="490" RenderTransformOrigin="0.62,1.205">
<Grid.RowDefinitions>
<RowDefinition Height="143*"/>
<RowDefinition Height="136*"/>
<RowDefinition Height="153*"/>
</Grid.RowDefinitions>
</Grid>
<Grid HorizontalAlignment="Left" Height="447" Margin="1594,3438,0,0" Grid.Row="1" VerticalAlignment="Top" Width="511">
<Grid.RowDefinitions>
<RowDefinition Height="142*"/>
<RowDefinition Height="156*"/>
<RowDefinition Height="149*"/>
</Grid.RowDefinitions>
</Grid>
<Grid HorizontalAlignment="Left" Height="452" Margin="510,3433,0,0" Grid.Row="1" VerticalAlignment="Top" Width="1084">
<Grid.RowDefinitions>
<RowDefinition Height="44*"/>
<RowDefinition Height="45*"/>
</Grid.RowDefinitions>
</Grid>
<Grid HorizontalAlignment="Left" Height="23141" Margin="20,3895,0,0" Grid.Row="1" VerticalAlignment="Top" Width="1574"/>
<Grid HorizontalAlignment="Left" Height="23540" Margin="1599,3496,0,0" Grid.Row="1" VerticalAlignment="Top" Width="506">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="14.143"/>
<ColumnDefinition Width="146.857"/>
<ColumnDefinition Width="42.714"/>
<ColumnDefinition Width="119*"/>
<ColumnDefinition Width="98*"/>
<ColumnDefinition Width="85*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="87*"/>
<RowDefinition Height="23516*"/>
</Grid.RowDefinitions>
<Label x:Name="label" Content="Hespanic" HorizontalAlignment="Left" Margin="-1,-61,0,0" VerticalAlignment="Top" Height="55" Width="506" FontSize="22" Grid.ColumnSpan="6"/>
</Grid>
<Label x:Name="label1" Content="Sample" HorizontalAlignment="Left" Margin="8,97,0,0" VerticalAlignment="Top" RenderTransformOrigin="-8.5,0.654" Width="215"/>
<Label x:Name="label2" Content="Layer" HorizontalAlignment="Left" Height="33" Margin="922,10,0,0" VerticalAlignment="Top" Width="232" FontSize="18"/>
<Label x:Name="label3" Content="Index" HorizontalAlignment="Left" Margin="1969,10,0,0" VerticalAlignment="Top" Width="105"/>
<Label x:Name="label4" Content="People" HorizontalAlignment="Left" Margin="1477,84,0,0" VerticalAlignment="Top" Width="161"/>
</Grid>
</Window>
So I'm trying to add thickness = 1, outline for grid borders, rows and columns
So I tried following thread
How do i put a border on my grid in WPF?
So to add a border I added following thing, and its working fine
<Border BorderBrush="Black" BorderThickness="2">
<Grid>
<!-- Grid contents here -->
</Grid>
</Border>
But since I have need to add thickness = 1, outline for all above multiple columns and rows also, I tried something like this
</Grid.ColumnDefinitions>
<Border Grid.Row="0" Grid.Column="0" BorderThickness="1" BorderBrush="Black"/>
<Border Grid.Row="0" Grid.Column="1" BorderThickness="1" BorderBrush="Black"/>
which is identifying each column and row and add thickness to them, but this seems quite time consuming and confusing work.
Is there any other proper and quick way to add BorderThickness="1" BorderBrush="Black" to all above Columns and Rows in the grids ?
In the default WPF Grid, you can set ShowGridLines="True". However these lines are meant to be designer lines, and not meant for end use.
The common solution I use is a custom GridControl which adds DependencyProperties for GridLines settings, and overrides OnRender to draw them.
public class GridControl : Grid
{
#region Properties
public bool ShowCustomGridLines
{
get { return (bool)GetValue(ShowCustomGridLinesProperty); }
set { SetValue(ShowCustomGridLinesProperty, value); }
}
public static readonly DependencyProperty ShowCustomGridLinesProperty =
DependencyProperty.Register("ShowCustomGridLines", typeof(bool), typeof(GridControl), new UIPropertyMetadata(false));
public Brush GridLineBrush
{
get { return (Brush)GetValue(GridLineBrushProperty); }
set { SetValue(GridLineBrushProperty, value); }
}
public static readonly DependencyProperty GridLineBrushProperty =
DependencyProperty.Register("GridLineBrush", typeof(Brush), typeof(GridControl), new UIPropertyMetadata(Brushes.Black));
public double GridLineThickness
{
get { return (double)GetValue(GridLineThicknessProperty); }
set { SetValue(GridLineThicknessProperty, value); }
}
public static readonly DependencyProperty GridLineThicknessProperty =
DependencyProperty.Register("GridLineThickness", typeof(double), typeof(GridControl), new UIPropertyMetadata(1.0));
#endregion
protected override void OnRender(DrawingContext dc)
{
if (ShowCustomGridLines)
{
foreach (var rowDefinition in RowDefinitions)
{
dc.DrawLine(new Pen(GridLineBrush, GridLineThickness), new Point(0, rowDefinition.Offset), new Point(ActualWidth, rowDefinition.Offset));
}
foreach (var columnDefinition in ColumnDefinitions)
{
dc.DrawLine(new Pen(GridLineBrush, GridLineThickness), new Point(columnDefinition.Offset, 0), new Point(columnDefinition.Offset, ActualHeight));
}
dc.DrawRectangle(Brushes.Transparent, new Pen(GridLineBrush, GridLineThickness), new Rect(0, 0, ActualWidth, ActualHeight));
}
base.OnRender(dc);
}
static GridControl()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(GridControl), new FrameworkPropertyMetadata(typeof(GridControl)));
}
}
It can be used like this :
<local:GridEx ShowCustomGridLines="True"
GridLineBrush="#FF38B800"
GridLineThickness="2">
...
</local:GridEx>
I have created a ListViewTemplate as a UserControl,that I want to display it when I click on this Hamburger Button,this is my code:
Main.xaml:
<SplitView.Content >
<Grid Background="White" >
<Grid.RowDefinitions>
<RowDefinition Height="35" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Background="#f0f0f0" >
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Button x:Name="TrieButton" Margin="0" Content=""
Width="50" Background="Transparent" VerticalAlignment="Stretch" Click="TrieButton_Click" />
</StackPanel>
</Grid>
<Frame Grid.Row="1" x:Name="ContentFrame" Margin="0" />
</Grid>
</SplitView.Content>
And this is the code Behind:
Main.xaml.cs:
private void TrieButton_Click(object sender, RoutedEventArgs e)
{
ListViewTemplate c = new ListViewTemplate();
if (c.Visibility == Visibility.Visible)
{
c.Visibility = Visibility.Collapsed;
}
else
{
c.Visibility = Visibility.Visible;
}
}
this is my UserControl:
ListViewTemplate.xaml:
<Grid x:Name="FilterGrid" Background="Black">
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="0" >
<ListView x:Name="Liste" Background="Black" >
<ListViewItem >
<TextBlock Text="Nom" Foreground="#9d9e9e"/>
</ListViewItem>
<ListViewItem >
<TextBlock Text="Catégorie" Foreground="#9d9e9e"/>
</ListViewItem >
</ListView>
</StackPanel>
</Grid>
My problem is that this ListView UserControl is not shown when I click on the TrieButton,even I have increased the height of Grid
so please How can I correct my code,to have Listview showed when I click on TrieButton
thanks for help
Firstly: You didn't add the UserControl to your main XAML anywhere. You should add to XAML first like this:
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:usercontrol="clr-namespace:WpfApplication1"
Then:
<Grid Background="White" x:Name="MGrid">
<Grid.RowDefinitions>
<RowDefinition Height="35" />
<RowDefinition Height="10" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Background="#f0f0f0" >
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Button x:Name="TrieButton" Margin="0" Content=""
Width="50" Background="Transparent" VerticalAlignment="Stretch" Click="TrieButton_Click" />
</StackPanel>
</Grid>
<Frame Grid.Row="1" x:Name="ContentFrame" Margin="0" />
<usercontrol:ListViewTemplate x:Name="c" Grid.Row="2" Visibility="Collapsed"></usercontrol:ListViewTemplate>
</Grid>
Secondly: You just created a new instance of a ListViewTemplate. You should find one that is placed in your XAML by using FindName method and then change the Visibility of it like this:
private void TrieButton_Click(object sender, RoutedEventArgs e)
{
ListViewTemplate c = MGrid.FindName("c") as ListViewTemplate;
c.Visibility = c.Visibility == Visibility.Visible ? Visibility.Collapsed : Visibility.Visible;
}
In response to the button click you are incorrectly creating a new instance of a ListViewTemplate object and then throwing it away.
I think that what you really want to do is something along these lines:
private void TrieButton_Click(object sender, RoutedEventArgs e)
{
ListViewTemplate c = (ListViewTemplate) Controls["Liste"];
if (c.Visibility == Visibility.Visible)
c.Visibility = Visibility.Collapsed;
else
c.Visibility = Visibility.Visible;
}
Here we retrieve the existing Control and change its visible/collapsed state.
I have the following xaml, where you can see a GroupBox on top and other ones on the left and on the right.
Is there a way to set the GroupBox on top so that (when I resize the window) its left and right edges are aligned respectively with the left edge of the GroupBoxes on the left and the right edge of the GroupBoxes on the right?
Edit
I'm keeping fixed the width of the groupboxes in the tab controls because I've implemented a wpf zooming there: I've updated the xaml now (of course the zoom is implemented also in the code behind)
<?xml version="1.0" encoding="utf-8"?>
<Window
x:Class="MatchWidth.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MatchWidth"
Height="1000"
Width="1600">
<Grid>
<Grid.RowDefinitions>
<RowDefinition
Height="100" />
<RowDefinition
Height="*" />
</Grid.RowDefinitions>
<GroupBox
Header="Top Box"
Grid.Row="0"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Margin="25,5,35,25" />
<Grid
Grid.Row="1">
<Grid.LayoutTransform>
<ScaleTransform
CenterX="0" CenterY="0"
ScaleX="{Binding ElementName=uiScaleSliderL,Path=Value}"
ScaleY="{Binding ElementName=uiScaleSliderL,Path=Value}"/>
</Grid.LayoutTransform>
<Grid.ColumnDefinitions>
<ColumnDefinition
Width="*" />
<ColumnDefinition
Width="5" />
<ColumnDefinition
Width="*" />
</Grid.ColumnDefinitions>
<TabControl
Name="LeftTabCtr"
Grid.Column="0">
<TabItem Header="LeftTabCtr">
<ScrollViewer
HorizontalScrollBarVisibility="Auto">
<Grid
Height="800">
<Slider
x:Name="uiScaleSliderL"
ToolTip="Determines the UI scale factor."
Value="1" Minimum="0.1" Maximum="4" Width="200" Height="10"
HorizontalAlignment="Center" VerticalAlignment="Top" />
<GroupBox
Header="Left Box 1"
Grid.Column="0"
Grid.Row="0"
HorizontalAlignment="Stretch"
VerticalAlignment="Top"
Margin="25,20,25,25"
Width="720"
Height="180"/>
<GroupBox
Header="Left Box 2"
Grid.Column="0"
Grid.Row="0"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Width="720"
Margin="25,220,25,10" />
</Grid>
</ScrollViewer>
</TabItem>
</TabControl>
<GridSplitter
Grid.Column="1"
Width="5"
HorizontalAlignment="Stretch" />
<TabControl
Name="RightTabCtr"
Grid.Column="2">
<TabItem Header="RightTabCtr">
<ScrollViewer
HorizontalScrollBarVisibility="Auto">
<Grid
Height="800"> <Slider
x:Name="uiScaleSliderR"
ToolTip="Determines the UI scale factor."
Value="1" Minimum="0.1" Maximum="4" Width="200" Height="10"
HorizontalAlignment="Center" VerticalAlignment="Top" />
<GroupBox
Header="Right Box 1"
Grid.Column="0"
Grid.Row="0"
HorizontalAlignment="Stretch"
VerticalAlignment="Top"
Margin="25,20,25,25"
Width="720"
Height="180"/>
<GroupBox
Header="Right Box 2"
Grid.Column="0"
Grid.Row="0"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Width="720"
Margin="25,220,25,10" />
</Grid>
</ScrollViewer>
</TabItem>
</TabControl>
</Grid>
</Grid>
</Window>
The code behind contains something like that:
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
uiScaleSliderL.MouseDoubleClick +=
new MouseButtonEventHandler(RestoreScalingFactorL);
}
protected override void OnPreviewMouseWheel(MouseWheelEventArgs args)
{
base.OnPreviewMouseWheel(args);
if (Keyboard.IsKeyDown(Key.LeftCtrl) ||
Keyboard.IsKeyDown(Key.RightCtrl))
{
uiScaleSliderL.Value += (args.Delta > 0) ? 0.1 : -0.1;
}
}
protected override void OnPreviewMouseDown(MouseButtonEventArgs args)
{
base.OnPreviewMouseDown(args);
if (Keyboard.IsKeyDown(Key.LeftCtrl) ||
Keyboard.IsKeyDown(Key.RightCtrl))
{
if (args.MiddleButton == MouseButtonState.Pressed)
{
RestoreScalingFactorL(uiScaleSliderL, args);
}
}
}
void RestoreScalingFactorL(object sender, MouseButtonEventArgs args)
{
((Slider)sender).Value = 1.0;
}
}
You must specify correct margins and remove constant widths of groupboxes (maybe in your case it will be more flexibile to use minWidth, or just remove it completely)
I have the following layou:
<s:SurfaceWindow x:Class="Prototype_Concept_2.SurfaceWindow1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:s="http://schemas.microsoft.com/surface/2008"
Title="Prototype_Concept_2"
>
<s:SurfaceWindow.Resources>
<ImageBrush x:Key="WindowBackground" Stretch="None" Opacity="0.6" ImageSource="pack://application:,,,/Resources/WindowBackground.jpg"/>
</s:SurfaceWindow.Resources>
<Grid Background="{StaticResource WindowBackground}" >
<Grid Name="ProjectsGrid">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBox Name="ProjectsHeader" Grid.ColumnSpan="2" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" FontSize="25" Text="Please choose one of the following projects" Grid.Row="0"></TextBox>
<s:SurfaceButton Name="BottomButton" HorizontalAlignment="Right" FontSize="20" Width="100" Grid.Column="1" Grid.Row="2" Foreground="White" Content="Refresh"></s:SurfaceButton>
<s:SurfaceListBox Background="Black" Grid.ColumnSpan="2" Name="ProjectsList" Grid.Row="1" ItemsSource="{Binding Projects}"></s:SurfaceListBox>
<Label Name="ProjectsFooter" Grid.Column="0" Grid.Row="2" Grid.ColumnSpan="2" FontSize="15" Content="Fetching projects data ..."></Label>
</Grid>
<Grid ShowGridLines="True" Name="SmellHeader" Visibility="Collapsed">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="256"></ColumnDefinition>
<ColumnDefinition Width="256"></ColumnDefinition>
<ColumnDefinition Width="256"></ColumnDefinition>
<ColumnDefinition Width="256"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="38"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Rectangle Grid.Column="0" Grid.Row="0" Fill="Black"></Rectangle>
<Viewbox Grid.Column="0" Grid.Row="0" s:Contacts.PreviewContactDown="BrainClass_PreviewContactDown">
<Label Background="Black" Foreground="White" Content="BrainClass" HorizontalContentAlignment="Center"></Label>
</Viewbox>
<Rectangle Grid.Column="1" Grid.Row="0" Fill="Black"></Rectangle>
<Viewbox Grid.Column="1" Grid.Row="0">
<Label Background="Black" Foreground="White" Content="God Class" HorizontalContentAlignment="Center"></Label>
</Viewbox>
<Rectangle Grid.Column="2" Grid.Row="0" Fill="Black"></Rectangle>
<Viewbox Grid.Column="2" Grid.Row="0">
<Label Background="Black" Foreground="White" Content="Tradition Breaker" HorizontalContentAlignment="Center"></Label>
</Viewbox>
<Rectangle Grid.Column="3" Grid.Row="0" Fill="Black"></Rectangle>
<Viewbox Grid.Column="3" Grid.Row="0">
<Label Background="Black" Foreground="White" Content="RefusedParent Bequest" HorizontalContentAlignment="Center"></Label>
</Viewbox>
</Grid>
<Canvas Name="RootLayer" Grid.Row="1" Grid.ColumnSpan="4">
</Canvas>
</Grid>
</s:SurfaceWindow>
To the RootLayer I add some Ellipse. Later I want to reoder them:
internal void setFocus(SourceManager manager)
{
Console.WriteLine("Set focus to class " + getFullName());
foreach (SourceFile sf in manager.getBrainClasses())
{
sf.getVisualizer().Fill = Brushes.Red;
Canvas.SetZIndex(sf.getVisualizer(), 0);
}
this.getVisualizer().Fill = Brushes.Blue;
Canvas.SetZIndex(this.getVisualizer(), 1);
manager.window.RootLayer.InvalidateArrange();
manager.window.RootLayer.InvalidateVisual();
}
The Ellipse is referenced by this.getVisualizer();
However, nothing changes? How can I bring one Ellipse to the front?
It's not fully clear from your code post how the ellipses are added to the canvas but here is a small sample that does essentially what you want to do:
<Grid>
<Canvas x:Name="RootLayer" Width="500" Height="500" />
</Grid>
And in the constructor of the code behind, create some ellipses:
for (int i = 0; i < 10; i++)
{
Ellipse e = new Ellipse
{
Width = 100,
Height = 100,
Fill = new SolidColorBrush(
Color.FromArgb(0xDD,
(Byte) r.Next(255)
(Byte) r.Next(255)
(Byte) r.Next(255))),
Stroke = Brushes.Black,
StrokeThickness = 1,
};
e.MouseUp += new MouseButtonEventHandler(e_MouseUp);
Canvas.SetLeft(e, r.Next(400));
Canvas.SetTop(e, r.Next(400));
RootLayer.Children.Add(e);
}
Event handler to handle mouse click on the ellipses
void e_MouseUp(object sender, MouseButtonEventArgs e)
{
foreach (UIElement item in RootLayer.Children)
Panel.SetZIndex(item, 0);
Panel.SetZIndex((UIElement)sender, 1);
}
With the code above, whenever an ellipse is clicked (mouse up), it will raise above all the other ellipses in that canvas.
I have two grids with three rows each. The first and last row of each grid has a fixed height while the middle rows have auto height and share their height using SharedSizeGroup.
First, the content of the right grid determines the height of the size group. When the content of the right grid shrinks so that the content of the left grid determines the height of the size group, the overall size of the left grid is not adjusted correctly.
See the following sample app. Click the increase button to increase the size of the textblock in the right grid. The size of the left grid changes accordingly. Now decrease the size. When the textblock becomes smaller than the textblock in the left grid, the total size of the left grid doesn't shrink. Is this a bug or am i missing something?
<StackPanel Orientation="Horizontal" Grid.IsSharedSizeScope="True">
<StackPanel Orientation="Vertical" Width="100">
<Grid Background="Green">
<Grid.RowDefinitions>
<RowDefinition Height="15" />
<RowDefinition SharedSizeGroup="Group1" />
<RowDefinition Height="15" />
</Grid.RowDefinitions>
<TextBlock Background="Blue" Grid.Row="0" />
<TextBlock Background="Red" Grid.Row="1" Name="textBlock1" Height="100" />
<TextBlock Background="Blue" Grid.Row="2" />
</Grid>
<TextBlock Text="{Binding Path=ActualHeight, ElementName=grid1}" />
</StackPanel>
<StackPanel Orientation="Vertical" Width="100">
<Grid Background="Green">
<Grid.RowDefinitions>
<RowDefinition Height="15" />
<RowDefinition SharedSizeGroup="Group1" />
<RowDefinition Height="15" />
</Grid.RowDefinitions>
<TextBlock Background="Blue" Grid.Row="0" />
<TextBlock Background="Red" Grid.Row="1" Name="textBlock2" Height="150" />
<TextBlock Background="Blue" Grid.Row="2" />
</Grid>
<TextBlock Text="{Binding Path=ActualHeight, ElementName=grid2}" />
</StackPanel>
<Button Height="24" Click="Button_Click_1" VerticalAlignment="Top">Increase</Button>
<Button Height="24" Click="Button_Click_2" VerticalAlignment="Top">Decrease</Button>
</StackPanel>
private void Button_Click_1(object sender, RoutedEventArgs e)
{
textBlock2.Height += 30;
}
private void Button_Click_2(object sender, RoutedEventArgs e)
{
textBlock2.Height -= 30;
}
The rows are staying the same height - the size of the second TextBlock is changing, while the size of the first TextBlock remains 100.
To demonstrate this, make the following changes:
Add ShowGridLines="True" to each of your Grids
Change your named TextBlocks to show their ActualHeight as their text:
<TextBlock Background="Red" Grid.Row="1" Name="textBlock2" Height="150"
Text="{Binding RelativeSource={RelativeSource Self}, Path=ActualHeight}"/>
You will see that the SharedSizeGroup row will be the maximum ActualHeight of the two TextBlocks.
Update: A Short Project To Show What's Happening
I've created a quick-n-dirty project to show what's happening. It turns out that when the right grid gets smaller than the original size, the left grid does an Arrange but not a Measure. I am not sure I understand this completely - I have posted a follow-up question with this same solution.
Here is the solution that I created, based on your original. It simply wraps the basic grid in a custom class that spews out info (via event) when Measure and Arrange are called. In the main window, I just put that info into a list box.
InfoGrid and InfoGridEventArgs classes
using System.Windows;
using System.Windows.Controls;
namespace GridMeasureExample
{
class InfoGrid : Grid
{
protected override Size ArrangeOverride(Size arrangeSize)
{
CallReportInfoEvent("Arrange");
return base.ArrangeOverride(arrangeSize);
}
protected override Size MeasureOverride(Size constraint)
{
CallReportInfoEvent("Measure");
return base.MeasureOverride(constraint);
}
public event EventHandler<InfoGridEventArgs> ReportInfo;
private void CallReportInfoEvent(string message)
{
if (ReportInfo != null)
ReportInfo(this, new InfoGridEventArgs(message));
}
}
public class InfoGridEventArgs : EventArgs
{
private InfoGridEventArgs()
{
}
public InfoGridEventArgs(string message)
{
this.TimeStamp = DateTime.Now;
this.Message = message;
}
public DateTime TimeStamp
{
get;
private set;
}
public String Message
{
get;
private set;
}
}
}
Main Window XAML
<Window x:Class="GridMeasureExample.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:GridMeasureExample"
Title="SharedSizeGroup" Height="500" Width="500">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<StackPanel Grid.Column="0"
Grid.Row="0"
Orientation="Horizontal"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Grid.IsSharedSizeScope="True">
<StackPanel Orientation="Vertical" Width="100">
<local:InfoGrid x:Name="grid1" Background="Green" ShowGridLines="True">
<Grid.RowDefinitions>
<RowDefinition Height="15" />
<RowDefinition SharedSizeGroup="Group1" />
<RowDefinition Height="15" />
</Grid.RowDefinitions>
<TextBlock Background="Blue" Grid.Row="0" Text="Row 0"/>
<TextBlock Background="Red" Grid.Row="1" Name="textBlock1" Height="100"
Text="{Binding RelativeSource={RelativeSource Self}, Path=ActualHeight}"/>
<TextBlock Background="Blue" Grid.Row="2" Text="Row 2" />
</local:InfoGrid>
<TextBlock Text="{Binding Path=ActualHeight, ElementName=grid1}" />
</StackPanel>
<StackPanel Orientation="Vertical" Width="100">
<local:InfoGrid x:Name="grid2" Background="Yellow" ShowGridLines="True">
<Grid.RowDefinitions>
<RowDefinition Height="15" />
<RowDefinition SharedSizeGroup="Group1" />
<RowDefinition Height="15" />
</Grid.RowDefinitions>
<TextBlock Background="Orange" Grid.Row="0" Text="Row 0" />
<TextBlock Background="Purple" Grid.Row="1" Name="textBlock2" Height="150"
Text="{Binding RelativeSource={RelativeSource Self}, Path=ActualHeight}"/>
<TextBlock Background="Orange" Grid.Row="2" Text="Row 2" />
</local:InfoGrid>
<TextBlock Text="{Binding Path=ActualHeight, ElementName=grid2}" />
</StackPanel>
</StackPanel>
<ListBox x:Name="lstInfo"
Grid.Column="1"
Grid.Row="0"
Margin="10,0,0,0"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch" />
<UniformGrid Grid.Column="0"
Grid.Row="1"
Grid.ColumnSpan="2"
Columns="2"
HorizontalAlignment="Center"
Margin="5">
<Button x:Name="btnIncrease" Margin="4,0">Increase</Button>
<Button x:Name="btnDecrease" Margin="4,0">Decrease</Button>
</UniformGrid>
</Grid>
</Window>
Main Window Constructor (only code in code-behind)
public Window1()
{
InitializeComponent();
btnIncrease.Click += (s, e) =>
{
lstInfo.Items.Add(String.Format("{0} Increase Button Pressed", DateTime.Now.ToString("HH:mm:ss.ffff")));
textBlock2.Height += 30;
};
btnDecrease.Click += (s, e) =>
{
lstInfo.Items.Add(String.Format("{0} Decrease Button Pressed", DateTime.Now.ToString("HH:mm:ss.ffff")));
if (textBlock2.ActualHeight >= 30)
textBlock2.Height -= 30;
};
grid1.ReportInfo += (s, e) => lstInfo.Items.Add(String.Format("{0} Left Grid: {1}", e.TimeStamp.ToString("HH:mm:ss.ffff"), e.Message));
grid2.ReportInfo += (s, e) => lstInfo.Items.Add(String.Format("{0} Right Grid: {1}", e.TimeStamp.ToString("HH:mm:ss.ffff"), e.Message));
}