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Fill Ellipse with wave animation

I have created an ellipse in Windows Phone 8.1 Silverlight App and UWP both
and I wanted to fill it with animating waves,
For this purpose, I am following this solution
but it is for WPF so I am unable to use some control like "Visual Brush".
I wanted to fill ellipse with wave similar to this (ignore 50% in the image) -
And here is my eliipse
<Ellipse Name="WaveEllipse" Grid.Column="1" Grid.Row="0" VerticalAlignment="Top"
Stroke="{StaticResource PhoneAccentBrush}"
StrokeThickness="4"
Width="225"
Height="225">
</Ellipse>
any alternate on the visual brush?
mainly I wanted to implement it in Windows Phone 8.1 Silverlight, but I will switch to UWP if it is not available on WP platform

Before giving you the code, have a look at this animated gif below to try to understand how this animation could be created.
Make sense, right? All we need to do is to create a shape like this, animate its offset X(endlessly) and Y(water level), and finally just clip it with an ellipse.
So first you will need to use Adobe Illustrator or similar tools to create this shape. In AI, there's a Zig Zag effect(see screenshot below) that's perfectly for this. You just need to make sure the starting point is at the same position as the ending one, so when you repeat the animation, it will feel like it's never ending.
What's currently missing in UWP is the ability to clip a UIElement with a non-rectangular shape, so here we have to export this as a png (otherwise we would export it as a svg and use Path to display it).
Also for the same reason, the clipping part requires a lot of work. Like in Jet Chopper's answer, that's tons of code to just get a surfaceBrush! Not to mention that you will also need to manually handle device lost and app lifecycle.
Thankfully, in Creators Update(i.e. 15063), there's a new API called LoadedImageSurface that creates a CompositionSurfaceBrush by an image uri with a couple of lines' code. In my code example below, you will see that I use this, which means, if you want to support older versions of Windows 10, you will need to replace it with what's in Jet's answer.
Code
The idea is to create a UserControl called WaveProgressControl which encapsulates all the animation logic and exposes a dependency property called Percent that controls the water level.
The WaveProgressControl control - XAML
<UserControl x:Class="WaveProgressControlRepo.WaveProgressControl"
Height="160"
Width="160">
<Grid x:Name="Root">
<Ellipse x:Name="ClippedImageContainer"
Fill="White"
Margin="6" />
<Ellipse x:Name="CircleBorder"
Stroke="#FF0289CD"
StrokeThickness="3" />
<TextBlock Foreground="#FF0289CD"
FontSize="36"
FontWeight="SemiBold"
TextAlignment="Right"
VerticalAlignment="Center"
Width="83"
Margin="0,0,12,0">
<Run Text="{x:Bind Percent, Mode=OneWay}" />
<Run Text="%"
FontSize="22" />
</TextBlock>
</Grid>
</UserControl>
The WaveProgressControl control - Code-behind
private readonly Compositor _compositor;
private readonly CompositionPropertySet _percentPropertySet;
public WaveProgressControl()
{
InitializeComponent();
_compositor = Window.Current.Compositor;
_percentPropertySet = _compositor.CreatePropertySet();
_percentPropertySet.InsertScalar("Value", 0.0f);
Loaded += OnLoaded;
}
public double Percent
{
get => (double)GetValue(PercentProperty);
set => SetValue(PercentProperty, value);
}
public static readonly DependencyProperty PercentProperty =
DependencyProperty.Register("Percent", typeof(double), typeof(WaveProgressControl),
new PropertyMetadata(0.0d, (s, e) =>
{
var self = (WaveProgressControl)s;
var propertySet = self._percentPropertySet;
propertySet.InsertScalar("Value", Convert.ToSingle(e.NewValue) / 100);
}));
private void OnLoaded(object sender, RoutedEventArgs e)
{
CompositionSurfaceBrush imageSurfaceBrush;
SetupClippedWaveImage();
SetupEndlessWaveAnimationOnXAxis();
SetupExpressionAnimationOnYAxisBasedOnPercentValue();
void SetupClippedWaveImage()
{
// Note LoadedImageSurface is only available in 15063 onward.
var imageSurface = LoadedImageSurface.StartLoadFromUri(new Uri(BaseUri, "/Assets/wave.png"));
imageSurfaceBrush = _compositor.CreateSurfaceBrush(imageSurface);
imageSurfaceBrush.Stretch = CompositionStretch.None;
imageSurfaceBrush.Offset = new Vector2(120, 248);
var maskBrush = _compositor.CreateMaskBrush();
var maskSurfaceBrush = ClippedImageContainer.GetAlphaMask(); // CompositionSurfaceBrush
maskBrush.Mask = maskSurfaceBrush;
maskBrush.Source = imageSurfaceBrush;
var imageVisual = _compositor.CreateSpriteVisual();
imageVisual.RelativeSizeAdjustment = Vector2.One;
ElementCompositionPreview.SetElementChildVisual(ClippedImageContainer, imageVisual);
imageVisual.Brush = maskBrush;
}
void SetupEndlessWaveAnimationOnXAxis()
{
var waveOffsetXAnimation = _compositor.CreateScalarKeyFrameAnimation();
waveOffsetXAnimation.InsertKeyFrame(1.0f, -80.0f, _compositor.CreateLinearEasingFunction());
waveOffsetXAnimation.Duration = TimeSpan.FromSeconds(1);
waveOffsetXAnimation.IterationBehavior = AnimationIterationBehavior.Forever;
imageSurfaceBrush.StartAnimation("Offset.X", waveOffsetXAnimation);
}
void SetupExpressionAnimationOnYAxisBasedOnPercentValue()
{
var waveOffsetYExpressionAnimation = _compositor.CreateExpressionAnimation("Lerp(248.0f, 120.0f, Percent.Value)");
waveOffsetYExpressionAnimation.SetReferenceParameter("Percent", _percentPropertySet);
imageSurfaceBrush.StartAnimation("Offset.Y", waveOffsetYExpressionAnimation);
}
}
The MainPage
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<local:WaveProgressControl x:Name="WaveProgressControl" />
<Slider Grid.Row="1"
Margin="24"
Value="{x:Bind WaveProgressControl.Percent, Mode=TwoWay}" />
</Grid>
I have put everything into this sample project and below is a live demo. Enjoy! :)

Here's the UWP sample. You may adjust it as you wish:
<Canvas>
<Ellipse x:Name="Ellipse" Width="256" Height="256" Fill="DarkViolet" Stroke="DeepSkyBlue" StrokeThickness="8"/>
<Border x:Name="VisualBorder" Opacity="0.5"/>
</Canvas>
And code behind:
private async void CreateVisuals()
{
var compositor = ElementCompositionPreview.GetElementVisual(this).Compositor;
var bitmap = await CanvasBitmap.LoadAsync(CanvasDevice.GetSharedDevice(),
new Uri("ms-appx:///Assets/Wave-PNG-Transparent-Picture.png"));
var drawingSurface =
CanvasComposition.CreateCompositionGraphicsDevice(compositor, CanvasDevice.GetSharedDevice())
.CreateDrawingSurface(bitmap.Size,
DirectXPixelFormat.B8G8R8A8UIntNormalized, DirectXAlphaMode.Premultiplied);
using (var ds = CanvasComposition.CreateDrawingSession(drawingSurface))
{
ds.Clear(Colors.Transparent);
ds.DrawImage(bitmap);
}
var surfaceBrush = compositor.CreateSurfaceBrush(drawingSurface);
surfaceBrush.Stretch = CompositionStretch.None;
var maskedBrush = compositor.CreateMaskBrush();
maskedBrush.Mask = Ellipse.GetAlphaMask();
maskedBrush.Source = surfaceBrush;
var sprite = compositor.CreateSpriteVisual();
sprite.Size = new Vector2((float)Ellipse.Width, (float)Ellipse.Height);
sprite.Brush = maskedBrush;
sprite.CenterPoint = new Vector3(sprite.Size / 2, 0);
sprite.Scale = new Vector3(0.9f);
ElementCompositionPreview.SetElementChildVisual(VisualBorder, sprite);
var offsetAnimation = compositor.CreateScalarKeyFrameAnimation();
offsetAnimation.InsertKeyFrame(0, 0);
offsetAnimation.InsertKeyFrame(1, 256, compositor.CreateLinearEasingFunction());
offsetAnimation.Duration = TimeSpan.FromMilliseconds(1000);
offsetAnimation.IterationBehavior = AnimationIterationBehavior.Forever;
surfaceBrush.StartAnimation("Offset.X", offsetAnimation);
}
}
Here's how it looks like:

I have achieved this using a simple solution:
Wave2.png is a extended ( copy pasted the image and added to the end of the first image ) to make it longer.
The solution works on WP8/Store apps/UWP/Silverlight
<Border
Background="White"
VerticalAlignment="Center"
HorizontalAlignment="Center"
CornerRadius="10000"
BorderBrush="Black"
BorderThickness="5">
<Grid>
<Ellipse
x:Name="ellipse"
VerticalAlignment="Center"
HorizontalAlignment="Center"
Height="200"
Width="200">
<Ellipse.Fill>
<ImageBrush
x:Name="WaveImage"
Stretch="None"
ImageSource="wave2.png">
<ImageBrush.Transform>
<CompositeTransform
TranslateY="200"
TranslateX="299" />
</ImageBrush.Transform>
</ImageBrush>
</Ellipse.Fill>
</Ellipse>
<TextBlock
VerticalAlignment="Center"
HorizontalAlignment="Center"
Text="HUJ" />
</Grid>
</Border>
And here is the animation code:
<Storyboard
x:Name="AnimateWave">
<DoubleAnimationUsingKeyFrames
RepeatBehavior="Forever"
EnableDependentAnimation="True"
Storyboard.TargetProperty="(Shape.Fill).(Brush.Transform).(CompositeTransform.TranslateX)"
Storyboard.TargetName="ellipse">
<EasingDoubleKeyFrame
KeyTime="0:0:5"
Value="-299" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>

Display images from Assets with JSON - Windows Phone 8

I am making a WP8 application with a lot of local content in my Assets folder. So I am using a JSON file stored in the a JSON folder.
I have been able to parse the JSON to C# very easily and now I am trying to display the data in a list. I had no problem with displaying the title but I am unable to display an image, even with the filename I am got.
My images are stored in "Assets/Content/mediaXXX.jpg";
ListViewModel :
public class ListViewModel
{
public string Title { get; set; }
public string Subtitle { get; set; }
public BitmapImage ListImage { get; set; }
}
XAML
<ListBox Margin="0,1,0,0"
Height="730"
x:Name="MainList">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Height="120"
Width="480">
<StackPanel Orientation="Horizontal">
<Image HorizontalAlignment="Left"
Source="{Binding ListImage}"
Margin="12"
Stretch="UniformToFill"
Width="130"/>
<Grid>
<TextBlock x:Name="ListItemTitle"
Text="{Binding Title}"/>
<TextBlock x:Name="ListItemSubTitle"
Text="{Binding Subtitle}"/>
</Grid>
</StackPanel>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
And my C# page
BitmapImage image = new BitmapImage(new Uri(#"Assets/Content/" + photo.filename + ".jpg", UriKind.Relative);
l.ListImage = image;
Any idea?

Code should work. Only problems that might occur is your ListBox databinding is incorrectly defined.
I don't see any .ItemsSource = or ItemsSource={Binding some_collection}
Another thing is make sure that photo.filename is returning the correct file.
Set a string debug_string = "Assets/Content/" + photo.filename + ".jpg";
Make sure everything is correct.
Last thing is to make sure the files are actually in the Assets Folder inside the project and its
BuildAction is set to Content
like so

Telerik RadJumpList using DataVirtualizationMode.Automatic

I have a problem where im trying to use a Telerik Jump List with DataVirtualizationMode.Automatic, but i can't get it to work. The reason why i want to use this, is because i want my app to only download the data(games) which is in the current view of the Jump List control and not the whole data everytime. For example if i have searched for "Batman", and its returning 50 games, i don't want it to download and load all the games, only those i can see in the Jump List control.
Here is a sample of using DataVirtualizationMode.Automatic from Telerik, but i couldn't get it to work with my app: http://www.telerik.com/help/windows-phone/raddataboundlistbox-features-datavirtualization-automatic.html
Below is my Jump List control which i want to use with data virtualization.
MainPage.xaml:
<phone:PivotItem Header="Browse">
<Grid>
<telerikPrimitives:RadTextBox Name="txtSearch" HorizontalAlignment="Left" VerticalAlignment="Top" Height="80" Width="390"/>
<telerikPrimitives:RadImageButton Name="imgBtnSeachGame" VerticalAlignment="Top" HorizontalAlignment="Right" ButtonShape="Ellipse" BorderThickness="2" Margin="0,8,0,0" Click="imgBtnSeachGame_Click"></telerikPrimitives:RadImageButton>
<Controls:RadJumpList Name="jlGameList" ItemsSource="{Binding}" Tap="jlGameList_Tap" Margin="0,90,0,0" DataVirtualizationMode="Automatic">
<Controls:RadJumpList.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="20"></RowDefinition>
</Grid.RowDefinitions>
<Border Grid.Row="0" Background="{StaticResource PhoneAccentBrush}"
Padding="{StaticResource PhoneTouchTargetOverhang}"
Margin="0,0,0,0">
<TextBlock Name="tblGameTitle" Style="{StaticResource PhoneTextGroupHeaderStyle}" ManipulationStarted="tblGameTitle_ManipulationStarted" ManipulationCompleted="tblGameTitle_ManipulationCompleted">
<Run Text="{Binding GameTitle}"></Run>
</TextBlock>
</Border>
<Grid Background="#242424" Grid.Row="1">
<Image Name="imgGameList" Margin="0,0,0,0" Stretch="Fill" HorizontalAlignment="Left" VerticalAlignment="Top" Height="96" Width="96">
<Image.Source>
<BitmapImage UriSource="{Binding BoxArtFrontThumb}"
CreateOptions="BackgroundCreation" DecodePixelHeight="96" DecodePixelWidth="96" />
</Image.Source>
</Image>
<TextBlock Margin="110,0,0,0" Text="Platform" FontWeight="Bold" TextWrapping="Wrap" Foreground="YellowGreen" FontSize="{StaticResource PhoneFontSizeNormal}"/>
<TextBlock Name="txtPlatform" Margin="110,20,0,0" Text="{Binding Platform}"></TextBlock>
<TextBlock Text="Release Date" FontWeight="Bold" Margin="110,46,0,0" Foreground="YellowGreen" FontSize="{StaticResource PhoneFontSizeNormal}"/>
<TextBlock Name="txtReleaseDate" Margin="110,66,0,0" Text="{Binding ReleaseDate}"></TextBlock>
<!--</StackPanel>-->
</Grid>
<Grid Grid.Row="2"></Grid>
</Grid>
</DataTemplate>
</Controls:RadJumpList.ItemTemplate>
</Controls:RadJumpList>
</Grid>
</phone:PivotItem>
Below is where i bind my DataContext to my GetGamesListItems ObservableCollection in my GameData class. The imgBtnSearchGame_Click event method is being called when a user have typed for example "Batman" in my textbox txtSearch and tapped the button, it will then send the text to my GetGamesListData method.
MainPage.cs:
GameData gd = new GameData();
public MainPage()
{
InitializeComponent();
jlGameList.DataContext = gd.GetGamesListItems;
}
private void imgBtnSeachGame_Click(object sender, RoutedEventArgs e)
{
if (!string.IsNullOrEmpty(txtSearch.Text))
{
gd.GetGamesListData(txtSearch.Text, "", "");
}
}
Below is where i download the data in XML for the game name searched for. For example if it is "Batman" it will find and return all games with "Batman". The "BoxArtFrontThumb" Property is where im storing all the images for each game and is using async, because sometimes there can be quite alot of images it has to download and show.
GameData.cs
public void GetGamesListData(string name, string platform, string genre)
{
var webClient = new WebClient();
webClient.DownloadStringCompleted += GetGamesListRequestCompleted;
webClient.DownloadStringAsync(new Uri("http://thegamesdb.net/api/GetGamesList.php?name=" + name));
}
private async void GetGamesListRequestCompleted(object sender, DownloadStringCompletedEventArgs e)
{
if (e.Error == null)
{
GetGamesListItems.Clear();
var feedXml = XDocument.Parse(e.Result);
var gameDataTasks = feedXml.Root.Descendants("Game").Select(
async x => new GetGamesList
{
ID = (int)x.Element("id"),
GameTitle = (string)x.Element("GameTitle"),
ReleaseDate = (string)x.Element("ReleaseDate") ?? "N/A",
Platform = (string)x.Element("Platform") ?? "N/A",
BoxArtFrontThumb = new Uri(await GetBoxArtFrontThumbAsync((int)x.Element("id")), UriKind.RelativeOrAbsolute),
}).ToList();
var gameData = await Task.WhenAll(gameDataTasks);
foreach (var item in gameData)
{
GetGamesListItems.Add(item);
}
}
}
Below is where its finding and storing the images for the games.
public async Task<string> GetBoxArtFrontThumbAsync(int id)
{
var client = new HttpClient();
var result = await client.GetStringAsync("http://thegamesdb.net/api/GetArt.php?id=" + id);
var feedXml = XDocument.Parse(result);
var gameData = feedXml.Root.Descendants("Images").Select(x => new GetArt
{
BoxArtFrontThumb = new Uri(GetBoxArtFrontThumb(x), UriKind.RelativeOrAbsolute),
}).ToList();
return gameData.Single().BoxArtFrontThumb.ToString();
}
private static string GetBoxArtFrontThumb(XElement gameNode)
{
string data = "http://thegamesdb.net/banners/" + (string)gameNode.Descendants("boxart")
.FirstOrDefault(b => (string)b.Attribute("side") == "front");
if (data == "http://thegamesdb.net/banners/")
{
data = "/NoImage.jpg";
}
return data;
}
I really hope i explained this well enough and hope that there is someone that can help me solve this problem. Thanks.

Although you are using JumpList, the mechanism for Virtualizing the data is the same as the DataBoundListBox. (You can find more information here in the DataBoundListBox docs. There is a good tutorial using an OData service.)
In order for the Automatic mode to work properly, you need to be using Telerik's VirtualizingDataCollection object and initialize it with the proper arguments (count and page size).
I don't see this in the code you have provided above, can you please open a support ticket so that I can investigate further? See my comment above for the link. Let me know the ticket number and I'll provide further assistance.

Listbox with images leaks Memory crashes with OutofMemoryException

In my WP8 app, i have a page with lisbox where i am binding list of images to in the ItemTemplate with other data. As soon as I leave the page, i feel these images are not freeing up from the memory.
Below are code details:
XAML
<ListBox x:Name="userList" ItemTemplate="{StaticResource DataTemplate1}" Tap="userList_Tap" Loaded="userList_Loaded">
<StackPanel Orientation="Horizontal" Width="220" Height="220" HorizontalAlignment="Center" VerticalAlignment="Center" >
<Image x:Name="episodeImage" HorizontalAlignment="Right" Height="120" Margin="0" VerticalAlignment="Top" Width="120" Source="{Binding DefaultImagePath}" />
<TextBlock x:Name="episodeName" HorizontalAlignment="Left" Margin="4,0,0,36" TextWrapping="Wrap" Width="Auto" Foreground="White" FontFamily="Segoe WP" Text="{Binding ImageName}" VerticalAlignment="Bottom"/>
</StackPanel>
</ListBox>
C# data behind:
public class ImageHolder{
public BitmapImage DefaultImagePath { get; set; }
public string ImageName { get; set; }
}
// list binding
List<ImageHolder> images=Utils.GetLargeImages();
userList.ItemSource=images;
public static List<ImageHolder> GetLargeImages(){
List<ImageHolder> images= new List<ImageHolder>();
for (int i = 0; i < 10; i++)
{
ImageHolder hold=new ImageHolder();
hold.ImageName=i+"";
hold.DefaultImagePath = new BitmapImage
{
DecodePixelWidth = 120,
DecodePixelHeight = 120,
UriSource = new Uri("Image_"+i+".png", UriKind.RelativeOrAbsolute) // this image is in 400x400 size
};
images.Add(hold);
}
return images;
}
I am using DecodePixelWidth and DecodePixelHeight during image fetching in (GetLargeImages() method).
onnavigatedfrom method i am setting null to the Listbox. But doesn't helping it, after couple of times going in and out of pages my app is crashing with OutofMemoryException.
protected override void OnNavigatedFrom(System.Windows.Navigation.NavigationEventArgs e)
{
userList.ItemsSource = null;
}

Try something that normally should not be done. By calling the Garbage collector.
GC.Collect();
You cann also try when you navigate away to another page to remove navigation backstack which should remove all knowledge of your page and thereby force a reinstantiation of the list and page when going back.

TextBlock Databinding Error

Class File:
public class User
{
public string user { get; set; }
}
XML for the TextBlock:
<DataTemplate x:Key="DataTemplate1">
<StackPanel x:Name="Stak" Orientation="Vertical" Width="0">
<TextBlock HorizontalAlignment="Left" TextWrapping="Wrap" Text="{Binding}" Width="443" Margin="0,0,-443,0" FontSize="22"/>
<TextBlock x:Name="UserText" HorizontalAlignment="Left" Text="{Binding User}" TextWrapping="NoWrap" Width="443" Margin="0,0,-443,0" FontFamily="Segoe WP SemiLight" FontSize="23"/>
</StackPanel>
</DataTemplate>
C# code to load text:
IsolatedStorageFileStream readName = store.OpenFile("/User Information/UserName.txt", FileMode.Open, FileAccess.Read);
using (StreamReader contactName = new StreamReader(readName))
{
var name = contactName.ReadLine();
var Load = new User();
Load.user = name;
}
So Basically what this is supposed to do is when the app loads, it reads a file from the User Information folder and is meant to add it to the TextBlock text. Because I cant access the TextBlock since it's inside a Pivot Datatemplate, I've binded it.
Once the App is done reading the file it's meant to add whatever is inside the name into the textblock but it doesn't do it.