If I start the scrolling vertically or horizontically the scroller "locks", such that you can only scroll horizontically or vertically, untill you let go. If I however start of by scrolling diagonally, there is no problem, in thhese cases I can manouvre the scrollviewer how i want. How do I make sure that the scrollViewer doesn't "lock" if I start of scrolling vertically or horizontically. Here is my scrollViewer:
<StackPanel>
<TextBlock x:Name="MainPageTitle" Text="{Binding title}" Height="89"/>
<ScrollViewer Width="768" Height="380" HorizontalScrollBarVisibility="Hidden">
<Map/>
</ScrollViewer>
<TextBlock x:Name="LEgE" Text="HEJHEJEHEJEHJEHJ"/>
</StackPanel>
So just to clarify, how do I make sure that no matter how I start of the scroll, I'm always capable of scrolling in any direction. With in the grid of course. Any help would be appreciated.
This is a known Issue that the scrollviewer runs on "rails".
Which is also stated in the artikel in msdn forums http://social.msdn.microsoft.com/Forums/wpapps/en-US/8fdbe189-c037-4f55-89c5-6d6814dc58f2/scrollviewer-locks-when-you-only-scroll-horizontally-or-vertically?forum=wpdevelop
But one could look at how to handle manipulation events for windows phone
http://msdn.microsoft.com/en-us/library/windowsphone/develop/ff426933(v=vs.105).aspx
For this you need to set ScrollViewer.ManipulationMode to Control and manage it yourself.
But as stated in the first link, to acheive smoothness is very hard.
Related
I edited a ScrollViewer's template to wait only 0.5 seconds before hiding the scrollbars, and this succeeds in hiding them at that time, but they reappear for another 0.5 seconds. Why?
To reproduce, create a page resource for a ScrollViewer's Style with the default Template (find it here on MSDN) and change the 3 occurances of "3" to "0.5". Then use the following XAML:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<ScrollViewer Height="500" Width="500" Style="{StaticResource ScrollViewerControlTemplate1}">
<Grid Background="Blue" Height="1000" Width="1000">
</Grid>
</ScrollViewer>
</Grid>
Move the cursor over the ScrollViewer to show the scrollbar. Leave the cursor motionless for 0.5 seconds to see the scrollbar disappear. It then reappears for another 0.5 seconds. Why?
I have a feeling you're not going to make it work, but if you REALLY think it's worth your time - you could put the ScrollBars in your own grids and run your own animations on the grids whenever you decide you want to do that.
I ran into a little bug while creating a scrollable stackpannel. I used the scrollviewer. I have placed the Stackpannel inside the Scrollviewer but I can't scroll using a emulator.. I don't have a windows phone so I cant check it out on an actual phone. Here is my code:
<ScrollViewer Height="979" Margin="0,100,0,-439" VerticalAlignment="Stretch">
<StackPanel Height="979" VerticalAlignment="Stretch" Width="268">
// things inside the stackpannel
</StackPanel>
</ScrollViewer>
Am I doing something wrong or does the scrollviewer not work in an emulator?
The height of the ScrollViewer is the same as the height of the StackPanel so there is nothing to scroll (it just falls off the end of the screen). Try using VerticalAlignment="Stretch" instead of setting Height on the ScrollViewer which should help (if not, you have some other problem in your layout ;-) but using a fixed, smaller Height for the ScrollViewer will solve this immediate problem).
Currently when I populate the TextBlock with too much text, specifically Connecting to Site 26 has a name too long, it appears like this:
This is the definition of the UserControl:
<StackPanel VerticalAlignment="Center">
<ProgressBar IsIndeterminate="True" />
<TextBlock Name="txtOverlayText" FontSize="25" Foreground="White" HorizontalAlignment="Center" />
</StackPanel>
The text is supposed to be centred and if it's too long it should not fall off the left side of the screen, rather it should be be visible on the left side and anything that can't fit on the right side should be replaced with dots, e.g.
Connecting to Site 26 has a name t...
Is there a way to do this?
Right, so luckily for some time now in most of the xaml based stuff we've had the super handy dandy TextTrimming ability where you can just slap TextTrimming="WordEllipsis" on something and get those friendly dots on the end.
Though just a tip, sometimes a TextBlock's parent panel wont invoke the boundary to make it happen, so you have to slap a Width value on something, or swap the parent panel, like occasionally depending on the layout things like a StackPanel have to be substituted with a Grid to invoke the trim.
Anyhow, hope this helps, cheers!
I have layout as described below:
<ScrollViewer>
<StackPanel Orientation="Horizontal">
<!-- ... -->
<ScrollViewer>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel ScrollViewer.VerticalScrollBarVisibility="Visible" Orientation="Vertical" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ScrollViewer>
<!-- ... -->
</StackPanel>
</ScrollViewer>
And I would like to achieve that effect that is present in weather app.
In my application, when you're scrolling horizontaly using mouse wheel, when pointer gets over ItemsControl it immediately starts scrolling verticaly wheras in weather application there's fluent horizontal scrolling effect and scrolling verticaly begins when there's some time hover that vertical collection.
Is that behaviour somewhere implemented by default?.
Szymon
Generally, the guideline is that introducing vertical scrolling in a horizontally scrolling repeater is a bad idea. I think you should NOT consider Weather (or any standard Windows 8 app) as a model to emulate. Most of them violate the guidelines in some of the worst ways.
The Weather app accomplishes what you are asking based on the current mouse placement, the motion of the grid, and control with focus. That's a complex way of saying, some developer dreamed up a solution to help make their UI as confusing to the user as possible.
Please, don't.
What I think they do in order to achieve that effect is this:
If the mouse is over the vertical list for a while, they deactivate the horizontal scroll and activate the vertical one. Once the mouse moved outside the list, they switch back (deactivate the vertical scroll and activate the horizontal scroll).
I have not tested this to see if this works, but I think it should.
So I have come to that point where I am saying to myself over and over again I am missing some basic stuff.
I have a ScrollViewer with a RichTextBlock that converts HTML to the content.
Everything shows up as expected but I can't scroll! I had the VerticalScrollBarVisibility to Hidden but I have taken that out. After seeing this anwsear in StackOverflow I have stoped with the following code:
<ScrollViewer VerticalAlignment="Stretch"
HorizontalScrollMode="Disabled"
VerticalScrollBarVisibility="Visible"
VerticalScrollMode="Auto"
ZoomMode="Disabled"
Padding="52"
Background="#60000000" >
<RichTextBlock rtbx:Properties.Html="{Binding TextHTML}"
TextAlignment="Justify"
FontSize="20" />
</ScrollViewer>
It also seems that the PanningMode is not avaiable in Windows 8 but I belive that it is still the expected behaviour to scroll with the touch.
I have tried to put the ManipulationMode to All in the ScrollViewer and also tried to set to none in the RichTextBlock. However, I got no sucess with those approaches.
Removing the manipulation modes and isolating the problem and simplifing the "options" I was using led me to the conclusion that the ScrollViewer wasn't the issue.
The problem was: I had was a Control that was on top of the ScrollViewer that was hidden (opacity = 0). This Control swallowed all the events that I was needing in the ScrollViewer. Basic mistake.
I had to put the Visibility equals to Collapsed.