I have a reasonably large Silveright 3.0 project on the go, and I'm having issues accessing a couple of custom font resources from within one of the assemblies.
I've got a working test solution where I have added a custom font as a resource, and can access it fine from XAML using:
<TextBlock Text="Test" FontFamily="FontName.ttf#Font Name" />
The test solution consists of the TestProject.Application and the TestProject.Application.Web projects, with all the fun and games obviously in the TestProject.Application project
However, when I try this in my main solution, the fonts refuse to show in the correct type face (instead showing in the default font). There's no difference in the way the font has been added to project between the test solution and the main solution, and the XAML is identical.
However, there is a solution layout difference. In the main solution, as well as having a MainApp.Application and MainApp.Application.Web project, I also have a MainApp.Application.ViewModel project and a MainApp.Application.Views project, and the problem piece of XAML is the in the MainApp.Application.Views project (not the .Application project like the test solution).
I've tried putting the font into either the .Application or .Application.Views project, tried changing the Build Action to Content, Embedded Resource etc, all to no avail.
So, is there an issue accessing font resources from a child assembly that I don't know about, or has anyone successfully done this?
My long term need will be to have the valid custom fonts being stored as resources in a separate .Application.FontLibrary assembly that will be on-demand downloaded and cached, and the XAML controls in the .Application.Views project will need to reference this FontLibrary assembly to get the valid fonts. I've also tried xcreating this separate font library assembly, and I can't seem to get the fonts from the second assembly.
As some additional information, I've also tried the following font referencing approaches:
<TextBlock Text="Test" FontFamily="/FontName.ttf#Font Name" />
<TextBlock Text="Test" FontFamily="pack:application,,,/FontName.ttf#Font Name" />
<TextBlock Text="Test" FontFamily="pack:application,,,/MainApp.Application.Views;/FontName.ttf#Font Name" />
<TextBlock Text="Test" FontFamily="pack:application,,,/MainApp.Application.Views;component/FontName.ttf#Font Name" />
And a few similar variants with different assembly references/sub directories/random semi colons.
And so far nothing works... anyone struck this (and preferably solved it)?
This code works for me:
... FontFamily="/(DLL);Component/(DIR-optional)/(Font_file)#(Font_name)"/> ...
Related
In universal windows apps, a new form of binding is available. Lets use this example:
<TextBox Text="{x:Bind TextContent, Mode=TwoWay}"/>
where TextContent is a simple dependency property in the same user control / or the same page. Now, the xaml compiler generates the binding by creating some .cs files in the output directory.
As the bininding is compiled into the resulting application, I want to know if there is there a way to gather information about the binding from code? Specifically, I'd like to get the property path (TextContent in this example) from my own code.
I hope somebody can help.
I've spent some time researching the best way to bind an event to a ViewModel command using the MVVM pattern when developing a Universal App. I'm using MVVM Light.
As a test I'm using the SelectionChanged event of a ComboBox.
I've read a few people that have pinched the Behaviours SDK from the Windows 8.1 / WinRT framework and had some success with that. I have also included the Universal App behaviours SDK in my project and tried the following (put together from Windows 8.1 examples but using the UWP SDK).
XAML
<Page
xmlns:interactivity="using:Microsoft.Xaml.Interactivity"
xmlns:core="using:Microsoft.Xaml.Interactions.Core" />
...
<ComboBox ItemsSource="{Binding InputQuantities}">
<interactivity:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="SelectionChanged">
<core:InvokeCommandAction Command="{Binding SomeComboBoxCommand}" CommandParameter="Foo" />
</core:EventTriggerBehavior>
</interactivity:Interaction.Behaviors>
</ComboBox>
View Model
public RelayCommand SomeComboBoxCommand {get; set;}
However, the core:InvokeCommandAction isnt part of the Behaviours SDK and i get Invalid Type: expected type is 'Microsoft.Xaml.Interactivity.ActionCollection'. I've tried to use an ActionCollection.... but I'm not sure I know what I'm doing with that.
Ive successfully got it to work with compiled bindings and using Laurent's Blog Post:
XAML
<ComboBox ItemsSource="{Binding InputQuantities}" SelectionChanged="{x:Bind Vm.SomeComboBoxCommand }" />
View Model
public void SomeComboBoxCommand(object sender, SelectionChangedEventArgs e){//do stuff}
I know this isnt what Laurent is intending to demonstrate here and I think doing this is breaking the decoupling of the view and VM by then having to reference a UI component in my view model to get the selected item. But I've seen references to doing this during my research.
So how can I get this working using The Universal App interaction behaviours, if that's the right way to do it of course?
Update 1.
This is what I attempted to add, believing, incorrectly that I was adding the universal app behaviours SDK. I didn't notice at the time that it was targeting Windows 8.1.
However, my questions still stands: Why wont the InvokeActioncommandwork and why is it throwing the mentioned error? I will look at the other posts as soon as I get to work.
Update 2
After testing this on my works PC (exact same code as above, 1st example and the same behaviours SDK) it works fine and I'm getting the behaviour that I would expect. I need to test again on my home PC to see what has gone wrong. (Thanks to Justin XL for sticking with me)
Update 3
For completeness, after returning home I got the latest version of my project (from being checked in on my works PC) and it now also works on my home PC. I'm not sure what state my Visual Studio was in but it had sufficiently confused me enough to post this question. At least this should serve as a document on how to do what is described in the title. Thanks for all your help.
We seem to be getting this question a lot lately, in several different variants...
I'm not familiar with Universal App but is there any specific reason you're trying to use an event? WPF/Silverlight etc are designed to be data driven, all you need to do is bind the ComboBox's SelectedItem member to a property in your view model and the setter will get called whenever the user selects a new item. Often times you have to do exactly the same processing in response to other parts of your view model changing it (e.g. in Master-Child views) so having that logic in a single place generally makes for a much cleaner architecture.
Check this link: MVVM EventBinding Library ,explains about MVVM EventBinding. This purely decouples the View & View model & pass only the arguements to the command.
i tried to load a downloaded font in windows phone app.
i installed the font in pc.
i tried following
<TextBlock Width="237" Text="About" FontSize="36" Height="46" LineHeight="8"
FontFamily="{StaticResource nokia}"/>
<TextBlock Width="237" Text="About"
FontFamily="/font/nokia.ttf#Nokia Cellphone" FontSize="36" Height="46" LineHeight="8"/>
why external font is not loading
It doesn't matter if the font is installed on the PC or not.
For a font to work inside your app you'll need a few things.
You'll have to set the build action to 'Content' and output to directory set to: 'Copy if newer'.
And then the hardest part - Getting the preferred family right. I usually advocate using a tool for it, because the Windows Font viewer does not always show the right one.
'dp font viewer' is the one I usually use.
For a complete guide on implementing custom fonts, you could have a look here: http://www.blendrocks.com/code-blend/2015/01/04/a-complete-guide-to-working-with-custom-fonts-in-your-windows-and-windows-phone-app
I am currently making a basic Windows Phone 7 application for fun, and I am trying to store string (currently only those) values in a RESX file rather than embedding them all within the XAML files directly, or even adding code to manually insert the values.
In WPF, to use the property from the RESX file, you simply map the namespace that contains the RESX:
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:resx="clr-namespace:Namespace.To.Your.Resx;assembly=SuppliedIfSeparate"
and then use it:
<TextBlock Text="{x:Static resx:Strings.AppTitle}" />
But, I tried, and I've read that x:Static is simply not supported by Silverlight, and by extension, not supported in WP7 (It appears that they have provided the means, but not direct access to x:Static (French) in Silverlight 5/Mango).
I found this post describing an "AppConverter" class that is manually created to leverage similar functionality and it is currently what I am doing. The gist of the post is to create a resource within your XAML page that uses the AppConverter class for pre-specified keys, and then using that to replace the x:Static with a binding.
<TextBlock Text="{Binding Source={StaticResource AppTitle},Converter={StaticResource ResourceRetriever}}" />
It works, but it's verbose and error prone compared to the WPF implementation (a lot of copying and pasting between pages, and even controls).
What is the current best practice for this situation?
MSDN How to: Build a Localized Application for Windows Phone
I'm making a Windows Phone 7 application and I'm a bit confused with dark/light themes.
With a panorama, you very often set a background image. The issue is it's very hard to make a picture which is right for both dark and light themes. How are we supposed to proceed?
Is there a way to force a dark/light theme for a panorama? This will avoid making theme-specific panorama background pictures. Then how do I do? I found xaml files in C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v7.0\Design. If this is a right way to proceed, how can I import them for my panorama?
Or if there's no way (or if it's wrong) to force a dark/light theme: how to write conditional XAML to set correct resources? Now I have the following XAML (default.xaml) which is fine with the dark theme:
<ImageBrush x:Key="PageBackground" ImageSource="Resources/PageBackground.png" Stretch="None" />
<ImageBrush x:Key="PanoramaBackground" ImageSource="Resources/PanoramaBackground.png" Stretch="None" />
But when I use a light theme, black controls and black texts are hard to read with my dark background pictures. So I made different pictures that I can use this way:
<ImageBrush x:Key="PageBackground" ImageSource="Resources/PageBackgroundLight.png" Stretch="None" />
<ImageBrush x:Key="PanoramaBackground" ImageSource="Resources/PanoramaBackgroundLight.png" Stretch="None" />
Now my issue is to make XAML conditional to declare the right thing depending on the current theme.
I found no relevant way on the Internet. I would prefer not to use code or code-behind for that because I believe XAML is able to do this (I just don't know how).
EDIT: Code snippet to load a xaml file as ResourceDictionary
string xaml = null;
StreamResourceInfo xamlInfo = Application.GetResourceStream(new Uri("light.xaml", UriKind.Relative));
using (StreamReader sr = new StreamReader(xamlInfo.Stream))
xaml = sr.ReadToEnd();
dic = (ResourceDictionary)XamlReader.Load(xaml);
this.Resources.MergedDictionaries.Add(dic);
To force a dark or white theme you can indeed use the styles defined in the folder you pointed out. Copy and Paste the rules you need to your App.xaml (just PhoneForegroundColor, PhoneBackgroundColor and the related Brushes would be a good start).
It's probably better though to stay "theme-aware" and load a different image for light and dark themes. Here is an article explaining how to do this: http://blog.jayway.com/2010/12/16/theme-aware-panorama-background-in-windows-phone-7/
There is another possibility I've found: You can use the Coding4Fun Toolkit Converter according to these instructions. However, I'm unable to use correctly use them.
Another possibiliy is to use an OpacityMask. But this only works for black/white images :/
Yousef's solution looks interesting. but it takes too much time to load. The image will be changed round about 1s after the app started. I've tested this on a Nokia 820. I've moved the call for setting the DataContext in a Loaded Event, which was called much later. Now the call takes place in the constructor, so the image will be already set when the application displays it. However, it still adds more loading time :( Any suggestions on how to improve this?