I want to show some text information at the top/left of HelixViewport3D like "ShowCameraInfo" does, which display camera information at the bottom/left of the Viewport. BillboardTextVisual3D requires a 3D point, but what I want is just like TextBlock on Canvas, which just need a 2D coordinate.
I can use TextBlock, but it cannot be captured as part of HelixViewport3D.
Any idea?
Literally a Textblock placed over the HelixViewport3D should be what you need.
There is only one problem: Viewport will not recognize if you try to manipulate the camera by initiating the mouse click on the Stackpanel.
<Grid>
<hx:HelixViewport3D>
<hx:DefaultLights/>
<hx:CubeVisual3D SideLength="7"/>
<hx:CubeVisual3D SideLength="5" Fill="Red" Center="-5,3,0"/>
</hx:HelixViewport3D>
<StackPanel Margin="5" HorizontalAlignment="Left" VerticalAlignment="Top">
<StackPanel.Background>
<SolidColorBrush Color="#FFB6B6B6" Opacity="0.4"/>
</StackPanel.Background>
<TextBlock Text="asdhfasdvfmnas" Margin="5,2"/>
<TextBlock Text="mvcbnxcvjhbkdaf" Margin="5,2"/>
<TextBlock Text="vbkjsdvj" Margin="5,2"/>
</StackPanel>
</Grid>
Related
I'm working on a UWP Windows 10 app with a XAML UI. One of my pages requires that images fill the height of the window (or screen in tablet mode) and uniformly scale as one long row of images from left to right (going off-screen). I've got this set up perfectly using ViewBoxes for the images inside of a StackPanel set to a Horizontal Orientation like so:
<StackPanel Orientation="Horizontal">
<Viewbox>
<Image Source="http://lorempixel.com/200/200/" />
</Viewbox>
<Viewbox>
<Image Source="http://lorempixel.com/400/600/" />
</Viewbox>
<Viewbox>
<Image Source="http://lorempixel.com/700/700/" />
</Viewbox>
<Viewbox>
<Image Source="http://lorempixel.com/100/300/" />
</Viewbox>
<Viewbox>
<Image Source="http://lorempixel.com/100/500/" />
</Viewbox>
</StackPanel>
The intention is for the images to flow off-screen with a horizontal scroll that allows the user to pan from left to right to see the gallery of images as one long row.
I've tried enabling HorizontalScrollMode on the parent StackPanel like so:
<StackPanel Orientation="Horizontal" ScrollViewer.HorizontalScrollMode="Enabled">
But this did not enable any scrolling at all.
I also tried to wrap everything inside of a ScrollViewer like so:
<ScrollViewer HorizontalScrollMode="Enabled">
<StackPanel Orientation="Horizontal">
<Viewbox>
<Image Source="http://lorempixel.com/200/200/" />
</Viewbox>
<Viewbox>
<Image Source="http://lorempixel.com/400/600/" />
</Viewbox>
<Viewbox>
<Image Source="http://lorempixel.com/700/700/" />
</Viewbox>
<Viewbox>
<Image Source="http://lorempixel.com/100/300/" />
</Viewbox>
<Viewbox>
<Image Source="http://lorempixel.com/100/500/" />
</Viewbox>
</StackPanel>
</ScrollViewer>
But this completly breaks my ViewBox layout by shrinking all the images so they fit within a small portion of the screen and no longer fill the window/tablet height.
I've tried a number of other variations with similar results. Does anyone have some suggestions for solving this? Let me know if you need more info.
You do need a ScrollViewer to enable scrolling, although you might need to set a few properties to make it only scroll horizontally as mentioned in Windows 8 ListView with horizontal item flow
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollBarVisibility="Disabled"
ScrollViewer.HorizontalScrollMode="Enabled"
ScrollViewer.VerticalScrollMode="Disabled"
ScrollViewer.ZoomMode="Disabled"
Now the Viewbox is not the most controllable... control. You could try using the
SquareGrid panel from my toolkit instead of the Viewboxes. Maybe simplify it a bit. If that isn't enough - you could add some bindable properties that would update when the size of your window changes and bind the Width and Height of these images to these properties. Note that you can't use ActualWidth or ActualHeight because these don't raise change notifications on size changes.
<GridView x:Name="ImageGridView"
SelectedItem="{x:Bind ViewModel.SelectedLocation, Mode=TwoWay}"
Margin="10,0"
ScrollViewer.VerticalScrollBarVisibility="Disabled"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollMode="Disabled"
ScrollViewer.HorizontalScrollMode="Auto"
Grid.Row="4" Grid.ColumnSpan="5"
ItemsSource="{x:Bind ViewModel.CheckedLocations}"
ItemContainerStyle="{StaticResource PinsGridViewItemStyle}"
ItemTemplate="{StaticResource ImageOverlayGalleryFolderDataTemplate}" >
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid MaximumRowsOrColumns="1"/>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
</GridView>
This is my code to show 1 row of photos. You can adjust by the MaxiumRowsOrColumns. Also note that both HorizontalScrollBarVisibility and HorizontalScrollMode are present to custom as you want to.
I created a grid and inside this grid it contains a TextBlock. When I maximize or adjust the size of the window the content of the TextBlock doesn't stay in the center of the Grid.
Tried to keep this as short as possible. :>
<Grid>
<Grid HorizontalAlignment="Left" Height="46" VerticalAlignment="Top" Width="515">
<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center">Welcome! Use the functionalities below.</TextBlock>
</Grid>
</Grid>
Grids, by default, auto expand. That is, they take up as much area as they are allowed. Your outer grid will take up the entire client area of the window while the inner grid will stick to the top left of the outer grid, just as you have coded it to. If you want the inner grid to be centered, then do something like
<Grid>
<Grid HorizontalAlignment="Center" VerticalAlignment="Center" Height="46" Width="515">
<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center">Welcome! Use the functionalities below.</TextBlock>
</Grid>
</Grid>
You don't even have to include the horizontal and vertical alignment as grids will automatically centre.
If you just want to centre the TextBlock ...
<Grid>
<Grid>
<TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Height="46" Width="515">Welcome! Use the functionalities below.</TextBlock>
</Grid>
</Grid>
The text can be centred using the TextAlignment property.
I hope this helps
Here's my layout.
<Window>
<StackPanel Orientation="Vertical">
<StackPanel HorizontalAlignment="Stretch" Height="30">
</StackPanel>
<Canvas HorizontalAlignment="Center" Width="1020">
<!--i want this to take the remaining full height of the screen-->
<Canvas x:Name="bottomInfoBar" Canvas.Bottom="0" Width="720" Height="39">
<!--I want this at the very bottom of the screen-->
</Canvas>
</Canvas>
</Window>
I want the canvas to take the full height of the window so that the 'bottomInfoBar' always remains at the very bottom of the user's screen. However if i don't specify a height for the canvas 'bottomInfoBar' appears at the very top. How do i achieve this? Please help.
Easiest way:
<Window>
<DockPanel>
<Whatever x:Name="bottomInfoBar" DockPanel.Dock="Bottom"/>
<PrimaryContent/>
</DockPanel>
</Window>
Based on your question, you really should read about WPF's layout system before you write another line of code. You'll save yourself a world of pain if you understand that before proceeding.
I have set a canvas' background to an image of a company logo. I would like for this image to be aligned to the bottom right corner of the canvas.
Is it possible to do this, or would it require for the image to be added into the canvas as a child? That would not work with this program as all children of the canvas are handled differently.
Thank You
Will this work? (It worked for me, anyway.)
<Canvas>
<Canvas.Background>
<ImageBrush ImageSource="someimage.jpg" AlignmentX="Right"
AlignmentY="Bottom" Stretch="None" />
</Canvas.Background>
</Canvas>
AFAIK The WPF Canvas needs child UI elements to be positioned using absolute co-ordinates.
To achieve the right-bottom-anchored effect, I think you'd need to handle the window resize event, recalculate and apply the Top,Left co-ordinates for the child Image element to always stick to the right buttom corner.
<Window x:Class="HelloWPF.Window1" xmlns...
Title="Window1" Height="300" Width="339">
<Canvas>
<Image Canvas.Left="195" Canvas.Top="175" Height="87" Name="image1" Stretch="Fill" Width="122" Source="dilbert2666700071126ni1.gif"/>
</Canvas>
</Window>
How about containing the canvas and image inside of a Grid control like so?
<Window ...>
<Grid>
<Canvas/>
<Image HorizontalAlignment="Right" VerticalAlignment="Bottom" .../>
<Grid>
</Window>
This is my solution using a border inside the canvas to align the image. This solution works well when canvas is resized:
<Canvas x:Name="MiCanvas" Height="250" Width="500" Background="Aqua">
<Border x:Name="MiBorderImage"
Width="{Binding ElementName=MiCanvas, Path=ActualWidth}"
Height="{Binding ElementName=MiCanvas, Path=ActualHeight}"
Background="Transparent">
<Image x:Name="MiImage" Source="/GraphicsLibrary/Logos/MiLogo.png"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Stretch="None" />
</Border>
</Canvas>
Canvas doesn't seem to play well together nicely with the other elements when you try to build it into a layout and have e.g. controls on the side and the canvas is the drawing area.
For instance, why can I put a border around every element except a canvas? In the following code, border wraps canvas but the canvas only has the border on the top but not on the left, right or bottom:
<Window x:Class="WpfApplication25.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<StackPanel>
<TextBlock DockPanel.Dock="Bottom" Text="Move the slider to reveal the answer:"/>
<Slider DockPanel.Dock="Bottom" Name="theSlider"
HorizontalAlignment="Left"
Width="200"
Minimum="0"
Maximum="1"
Value="1"
Cursor="Hand"/>
<Border BorderBrush="Tan" BorderThickness="2">
<Canvas>
<TextBlock Canvas.Left="45" Canvas.Top="50" Text="test" FontSize="16"/>
<Rectangle
Canvas.Left="10"
Canvas.Top="10"
Width="100"
Height="100"
Fill="Silver"
Opacity="{Binding ElementName=theSlider, Path=Value}"
/>
</Canvas>
</Border>
</StackPanel>
</Window>
From what I can tell in XamlPad, the problem appears to be that your Canvas does not have an explicit height/width, and that its HorizontalAlignment defaults to being in the middle of the Border. Without an explicit height and width the Border appears to collapse to 0 height and stretches on the width. My assumption is this is because your Border is in a StackPanel, as placing the Border in a Grid, causes it to behave as expected.
Your best bet is to give the Canvas an explicit Height and Width. Not sure that is what you're looking for though.
As far as I understand what you are trying to achieve, you should place your controls in one cell of a Grid and your Canvas in another.