I have a Windows Store app BottomAppBar with a grid. For some reason the AppBar has some left and right margin which I don't want. Is this a bug in metro app or there is some setting missing in below code.
<common:LayoutAwarePage.BottomAppBar>
<AppBar>
<AppBar.Background>
<SolidColorBrush Color="Black" Opacity="0"/>
</AppBar.Background>
<Grid VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
<Grid.Background>
<SolidColorBrush Color="Black" Opacity="0.7"/>
</Grid.Background>
<Button Content="Hello"/>
</Grid>
</AppBar>
</common:LayoutAwarePage.BottomAppBar>
If you run the app, you can see that some region on the left and right side is not covered by AppBar( Or Grid). Why?
It seems that the default template of the AppBar control has some left and right padding.
You simply has to set the Padding property of the AppBar to 0.
I assume the left-right padding is there, so that controls are not drawn next to the edges of the screen.
Anyway, as #Mark says, just adjust the padding.
<Page.BottomAppBar>
<AppBar Padding='0'>
<AppBar.Background>
...
Related
I want to enable user to resize the NavigationView in my UWP app. Couldn't find any resources how I could do that.
I see some of the apps have "Resizable splitView" but for SplitView also, I cannot see any such resize property exposed to set by default.
Pls help.
Thanks in Advance
There are no such property can resize SplitView and NavigationView, you need to custom layout to implement a similar effect. You could use Slider control and bind the OpenPaneLength Property of SplitView to Slider.Value to do this. Please refer to the following code.
<Grid>
<SplitView Name="CoreSplitView"
DisplayMode="Inline"
IsPaneOpen="True"
OpenPaneLength="{Binding Value, ElementName=MasterSlider, Mode=OneWay}">
<SplitView.Pane>
<Grid Name="PaneGrid" Background="Gray">
<Slider Name="MasterSlider"
MinWidth="480"
VerticalAlignment="Stretch"
Maximum="480"
Minimum="10"
Opacity="0"
Value="150"
/>
<StackPanel Name="PaneStackPanel"
Margin="0,0,10,0" Background="LightGray">
<TextBlock TextWrapping="Wrap" Text="Use a slider when you want your users to be able to set defined, contiguous values (such as volume or brightness) or a range of discrete values (such as screen resolution settings).A slider is a good choice when you know that users think of the value as a relative quantity" />
</StackPanel>
</Grid>
</SplitView.Pane>
<Grid Name="ContentGrid" Background="LightSteelBlue">
</Grid>
</SplitView>
</Grid>
The StackPanel that is directly under our slider, acts like a cover for our Slider. Notice the StackPanel has Margin="0,0,10,0", this translates to a 10px distance from the right wall, which allows the Slider area to be exposed as a gray strip that is used to drag the Pane, again the 10px is arbitrary but it has to match the Minimum of the Slider.
I have come across a layout / template problem with CommandBar of which symptoms are seen in several pages:
UWP - CommandBar blank space under Buttons
https://github.com/microsoft/microsoft-ui-xaml/issues/1024
It seems that the UWP CommandBar elements inside the CommandBar have an actual height of 44px, which is cropped in a control of 40px.
When IsOpen="False", the AppBarButtons are vertically centered and the bottom 4px of the CommandBar.Content section is not shown
When IsOpen="Top", the AppBarButtons are shifted up, an ugly gap appears under them and the bottom 4px of the CommandBar.Content section is suddenly shown
Besides the ugly gap, it makes it very difficult to correctly vertically center elements in CommandBar.Content.
About the vertical position of the CommandBar
When the CommandBar is at the top of the Page, the CommandBar itself does not vertically resize.
When the CommandBar is at the bottom of the Page, the CommandBar itself grows vertically with 4px.
In all cases, the other symptoms happen
At bottom of page
The red line visualizes the bottom 4px of the CommandBar.Content section. Also, with the Reveal effect to the left of the mouse cursor you can see that the buttons shift up. The whole CommandBar grows vertically
At top of page
Trying to vertically align the content (hint: does not work)
Question
Is there any way to workaround this issue? Microsoft has qualified this more than a year ago as something they might fix in WinUI 3 which is far away.
Bug repro repository
https://github.com/hansmbakker/CommandBar.BugRepro
Relevant code to reproduce
<Page x:Class="CommandBar.BugRepro.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:CommandBar.BugRepro"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Page.BottomAppBar>
<CommandBar
VerticalContentAlignment="Bottom"
Background="#BB555555"
DefaultLabelPosition="Right">
<AppBarButton Icon="Back"
Label="Back" />
<AppBarButton Icon="Save"
Label="Save" />
<AppBarSeparator />
<AppBarButton Label="Title" />
<AppBarButton Label="Description" />
<AppBarButton Label="Pictures"
Icon="Pictures" />
<CommandBar.Content>
<Rectangle Fill="Red"
Height="4"
Width="200" />
</CommandBar.Content>
<CommandBar.SecondaryCommands>
<AppBarButton Icon="Setting"
Label="Settings">
<AppBarButton.KeyboardAccelerators>
<KeyboardAccelerator Modifiers="Control"
Key="I" />
</AppBarButton.KeyboardAccelerators>
</AppBarButton>
</CommandBar.SecondaryCommands>
</CommandBar>
</Page.BottomAppBar>
<Grid>
</Grid>
</Page>
UWP CommandBar moves vertically when IsOpen changes
During the testing, AppBarSeparator cause this behavior. Currently there is a work around that could fix this, please give AppBarSeparator specific height less than 40px.
<AppBarSeparator Height="40"/>
I have a Grid with an Image inside a ScrollViewer. The user needs to be able to zoom in and out of the image. The problem is when I zoom the scrollviewer seems to snap back to the left side of the image although I want the viewer to stay at the zoomed position. The XAML code looks like this
<ScrollViewer Name="ScrollViewer" HorizontalSnapPointsType="None" VerticalSnapPointsType="None" ZoomSnapPointsType="None">
<Grid x:Name="RenderedGrid" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Image x:Name="RenderedImage" Stretch="Fill" />
<canvas:CanvasControl Name="DrawingCanvas" Draw="CanvasControl_Draw" ClearColor="Transparent"/>
</Grid>
</ScrollViewer>
I thought it would be enough with setting the SnapPointType to "None", but that doesn't seem to work.
I wrote a blog post exactly about this issue: Why is my zoomable ScrollViewer snapping the image to the left?
The first part of the problem is the ScrollViewer itself, it needs the HorizontalScrollBarVisibility and VerticalScrollBarVisibility set to Auto.
<ScrollViewer ZoomMode="Enabled"
MinZoomFactor="1"
MaxZoomFactor="4"
HorizontalScrollBarVisibility="Auto"
VerticalScrollBarVisibility="Auto">
For that to really work, you'll need to limit the Image size to some width/height, like this:
<Image Source="{Binding ImageUri}"
MaxWidth="{Binding DataContext.PageWidth, ElementName=MyPage}"
MaxHeight="{Binding DataContext.PageHeight, ElementName=MyPage}"/>
You can find more details in my blog post, and full source code on GitHub.
I'm working with a toggle button and rather than show text I want to show an image so I have this:
<ToggleButton Grid.Column="1" IsChecked="true" MinWidth="50" MinHeight="0" BorderThickness="0" HorizontalAlignment="Center">
<Image Source="ms-appx:///Assets/Icons/phonebutton.png" Stretch="None" RenderTransformOrigin="0.5,0.5" Margin="0">
<Image.RenderTransform>
<CompositeTransform ScaleX="0.5" ScaleY="0.5"/>
</Image.RenderTransform>
</Image>
</ToggleButton>
I have the transform to make the image a bit smaller so it's "inside" the button instead of filling it.
However, no matter what I do the button has a large padding around the image, even though the image itself has no margins or padding. I've set margin=0 on everything but the ToggleButton insists on putting space around the image, so the button is larger than it needs to be and cuts off inside the grid row it's in (which has a height="*")
I want the toggle button to "shrink" to fit in the row but still show the full image inside ...
while typing this the autosuggest found this link ToggleButton does not fill the area(windows phone) and by adding the style PhoneTouchTargetOverhang it does look better but then cuts off the image at the bottom unless I add negative padding to the togglebutton.
Anyone have any idea what I'm doing wrong?
Is there any way to disable it?
I have added the following margin to an image of 512x512:
<Image Source="/Assets/award4.png" Stretch="None" RenderTransformOrigin="0.5,0.5" Margin="-100,0,-100,0">
<Image.RenderTransform>
<CompositeTransform ScaleX="0.5" ScaleY="0.5"/>
</Image.RenderTransform>
</Image>
And it fits centered
I try to understand how windows phone viewport control Bounds work.
So i can give
viewport.Bunds = new Rect(x,y,width, height);
but what that bound stand for is it a scrollable area in the viewport.
Can anyone give me a working simple example of it cause whenever i try to use this parameter i can't scroll in viewport whatsover
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="0,0,0,0">
<ViewportControl Name="tuzik" Bounds="0,0,300,400" Margin="66,117,20,41" >
<Canvas Name="canvas">
<Image Name="TestImage" Source="Assets\testimage.jpg"
HorizontalAlignment="Left" VerticalAlignment="Top"
Canvas.Left="-379" Canvas.Top="-769" Stretch="Fill" />
</Canvas>
</ViewportControl>
<Rectangle x:Name="rect" Width="300" Height="400" Margin="60,111,63,0" Stroke="Aqua" />
</Grid>
I believe your problem is the Canvas within the ViewportControl. Canvas does not expand to fill the ViewportControl and will not expand to contain the contents, either. You have to set a Width and Height on the Canvas.
(At least, that's how I have mine setup.)