How to apply a custom font family to Editor control from Stream at the run time?

Question

How to apply a custom font family to Editor control from Stream at the run time?

Deepak Gunasekaran 61

I have gone through the Fonts documentation for using custom fonts for Editor control in the .NET MAUI application. It requires registering font in the application to achieve the same. Instead of this, is it possible to use a custom font for Editor control from a font stream programmatically at the run time?

What I am attempting to accomplish: I have a forms document with text fields. I want to load it in a MAUI application, display the text fields, and allow users to view and edit the text fields. The text fields can be created using custom fonts and various forms use various fonts. It is not possible to keep all the fonts registered in the application. However, based on the forms loaded, I can obtain the font stream used in the text field.

Using the font stream, I need to set the font family for Editor preserving the original font metrics at the runtime.

Leon Lu (Shanghai Wicresoft Co,.Ltd.) 58,166 Reputation points Microsoft Vendor

2023-10-27T06:02:08.5766667+00:00
Which platform do you want to load the font at runtime?

I make a test with android platform, you must add font to Fonts folder, but you do not need to register this font in the MauiProgram.cs, You can use this font name directly, it is working. However, it is not working for windows platform.

<Label FontFamily="Lato-Regular.ttf" Text="yyy"

If you read font at the runtime, this font's BuildAction cannot be set to the MauiFont, you cannot use it in the MAUI control.
Deepak Gunasekaran 61 Reputation points

2023-10-27T06:46:05.8+00:00

Leon Lu (Shanghai Wicresoft Co,.Ltd.) Thank you for the reply. I want to achieve this in all the 4 platforms (Android, Windows, iOS, MacCatalyst) at the runtime.

Based on your following statement, I guess it is not possible to create a font at runtime from a stream and use in the control. If that so, we can conclude it as not possible in MAUI control.

Leon Lu (Shanghai Wicresoft Co,.Ltd.) 58,166 Reputation points Microsoft Vendor

2023-10-27T06:02:08.5766667+00:00

Which platform do you want to load the font at runtime?

I make a test with android platform, you must add font to Fonts folder, but you do not need to register this font in the MauiProgram.cs, You can use this font name directly, it is working. However, it is not working for windows platform.

<Label FontFamily="Lato-Regular.ttf" Text="yyy"

If you read font at the runtime, this font's BuildAction cannot be set to the MauiFont, you cannot use it in the MAUI control.
Deepak Gunasekaran 61 Reputation points

2023-10-27T06:46:05.8+00:00

Leon Lu (Shanghai Wicresoft Co,.Ltd.) Thank you for the reply. I want to achieve this in all the 4 platforms (Android, Windows, iOS, MacCatalyst) at the runtime.

Based on your following statement, I guess it is not possible to create a font at runtime from a stream and use in the control. If that so, we can conclude it as not possible in MAUI control.

Answer 1

Hello,

Based on your following statement, I guess it is not possible to create a font at runtime from a stream and use in the control. If that so, we can conclude it as not possible in MAUI control.

Yes, it cannot be achieved, please add these fonts in the Fonts folder, then register them.

Best Regards,

Leon Lu

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How to apply a custom font family to Editor control from Stream at the run time?

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