I would like to modify the design of the chrome and top menu panel of my app where the close and minify icons are.
How do I do this and in what XAML file? Should it be done in App.xaml, or in my main page's xaml file? I can find instructions on how to do this in a WPF app, but the concepts don't seem to carry over to Univeral App XAML.
As far as I know, you can change some settings from the chrome bar in the uwp, but not fully customize it by default.
The starting point for doing so would be the ApplicationView's TitleBar property.
This allows you to change the colors of the buttons and the bar itself:
var titleBar = ApplicationView.GetForCurrentView().TitleBar;
if (titleBar != null)
{
titleBar.ButtonBackgroundColor = Colors.DarkBlue;
titleBar.ButtonForegroundColor = Colors.White;
titleBar.BackgroundColor = Colors.Blue;
titleBar.ForegroundColor = Colors.White;
}
It is worth mentioning that when running the application on a PC, the control is called TitleBar but on a mobile device, it is called StatusBar. Full example for handling both devices can be found here.
If you need more personalization options, creating your own TitleBar component should be possible, look for the ExtendViewIntoTitleBar property of the CoreApplicationViewTitleBar object.
More info can be found here.
You need to use a resource dictionary with the custom styles. You can import these themes via App.Xaml to apply it.
These links might be of help. If you have any specific questions feel free to ask.
ResourceDictionary and XAML resource references
XAML theme resources
Related
In Android, it is quite easy to set a image placeholder for development purposes in an imageview.
All one would do is use the tools:src for the placeholder image during development so you could see it in your layout design preview and your actual image you would put into your android:src
. Frequently, you don't set the android:src put would populate that imageview with images that you download off the internet once you connect your app to the net:
<ImageView
android:layout_width="28dp"
android:layout_height="28dp"
android:src=#drawable/activated_icon"
tools:src="#mipmap/white_activated_icon" />
In Xamarin, you have this to display images:
<Image Source="http://lorempixel.com/1920/1080/nature/3" />
Once the app connects, the image is downloaded from the internet and displayed. How do I put in a placeholder image for development purposes (similar to the way you would do it through tools:src in android) so I can see it within the layout design previews?
I'm assuming you want to achieve this with Xamarin Forms, as you referring to XAML in the question title.
Or possibly you are referring to the Xamarin Forms Previewer? In that case, disregard the following answer. You can only use local images in the Previewer as far as I can tell.
Answer in case the question is related to runtime Xamarin Forms
There is no standard option to do this in Xamarin Forms. Take a look at this example suggested by Stephane Delcroix from the Xamarin Forums. The important part of this approach is to stack 2 images on top of each other in a grid. 1 is the placeholder that is placed beneath the image that is being loaded, like this:
var grid = new Grid();
grid.RowDefinitions.Add (new RowDefinition());
grid.Children.Add (image);
grid.Children.Add (placeholderImage);
As an alternative option, WebImage of Xamarin Forms Labs allows an option for a DefaultImage, but I'm not sure if that shows immediately. See this class for the code of the Web Image. Keep in mind that Xamarin Forms Labs is no longer under active maintenance.
Of course you can also write a custom renderer. Maybe based on the Xamarin Forms Labs example.
I use FFImageLoading for this Case.
Just install the Nuget Package and Use the "CachedImage" in XAML.
<ff:CachedImage Source="your url" Placeholder="placeholder while loading"/>
You don´t need to download (and cache) the Image manually then. It will automatically displayed when the download is done.
You can use local files (from Resources or Drawable) and files from HTTP/HTTPS.
this is not clear to me from the documentation and from the current behavior I see in my app: The stylesheets work nice using a web browser, but not on the mobile app.
So what I was looking for is how to apply different background images in our mobile app (or at least colors) to the navigation page (top level pages list) and any other pages. We would like to apply different styles to the our current, I guess default style but don't know how to do this. So at this point I do not know what I can ask our graphics designer to provide.
Any docs that I missed or examples I can look at?
Thanks,
Vincent
The styles you are using for the web are applied by RAP's theming. Currently Tabris does not support theming. The only option you have at the moment is to use the SWT setBackground.Image methods on the widget itself. To behave different as in the web you could use RWT.getClient().getService( ClientDevice.class ).getPlatform(); to distinguish between the mobile and web client.
I'm new to Windows 8 development. I want to implement something similar to the following in Microsoft Maps application for Windows 8:
In the maps app, when the user clicks on Directions menu item in the app bar, a side bar appears on the right.
How can I implement such a side bar ?
Unfortunately there's no such control built-in in WinRT. The closest to what your looking for would be SettingsFlyout control from Callisto. It's not ideal for this case, since it was designed to be used as settings flyout. Most notably you'd need to get rid of the back button which opens up the settings charm. You could try overriding the style or taking the control source code and modifying it.
It's really simple to use, though:
var flyout = new SettingsFlyout();
flyout.FlyoutWidth = SettingsFlyout.SettingsFlyoutWidth.Narrow;
flyout.HeaderText = "Flyout";
flyout.Content = new FlyoutControl();
flyout.IsOpen = true;
FlyoutControl would be a custom UserControl you want to display.
Windows 8 metro style app tiles are created based on pre-defined xml templates (found here).
Is there any way to hook up to Windows' rendering of the tile to allow a tile preview within an app?
In my app I would like to offer the user a subset of the tile templates listed in the above link and let the user customize the tile content. A live preview of the customized tile rendered within my app would greatly improve the user experience.
you should look into HubTile.
I don't know any free control's right now, but Telerik and Syncfusion have HubTile control
You can't get access to real Windows tile rendering, but you can simulate it since all templates are known. It is very unlikely that Microsoft would change the way tiles are rendered and even if they do you should be able to issue app update to keep up with Microsoft.
I am using the jetpack theme in my silverlight project. Everything is picking up the styles except I do not get the subtle text shadow effect that is visible on all the controls on the jetpack demo page.
Here is a screenshot - my project on the left, the demo site on the right.
Is there anything I have to do to enable the effect?
You have to use the label control in the toolkit.
Do this:
xmlns:label="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.Input"
then this
<label:Label>Icon</label:Label>