B4J Tutorial FXThemes

Now I have a windows 11 PC and thanks to a prod from one of @Cableguy posts on another thread, I finally got round to looking at an alternative to my Replacement Titlebar lib.

This is a quick example of how to use this FXThemes library on Github.

It is not difficult to use, and probably not worth wrapping as a library. The example uses JavaObject. You can read the javaDoc to see what else is available.

You need to download the fxthemes-1.6.0 jar from Maven Central, and the jna-5.13.0 and jna-platform-5.13.0 if you don't already have them. The library was compiled with Java 21, but it is working for my test on Java 19. Uncomment the #JavaCompilerPath assignment and point it to a suitable java compiler.

After about 15 mins I got this:

Which is probably what we've all been after.

This is the code:

#Region Project Attributes
    #MainFormWidth: 600
    #MainFormHeight: 600
#End Region

#AdditionalJar:fxthemes-1.6.0
#AdditionalJar: jna-5.13.0
#AdditionalJar: jna-platform-5.13.0

'#JavaCompilerPath: 19,C:\Java\jdk-19.0.2\bin\javac.exe ' Or wherever a suitable java version lives on your machine.

#VirtualMachineArgs: --add-opens javafx.graphics/javafx.stage=ALL-UNNAMED --add-exports javafx.graphics/com.sun.javafx.tk.quantum=ALL-UNNAMED

Sub Process_Globals
    Private fx As JFX
    Private MainForm As Form
    Private xui As XUI
    Private Button1 As B4XView
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    MainForm.RootPane.LoadLayout("Layout1")
    MainForm.Show
 
 
    Dim MF As JavaObject = MainForm
    Dim Stage As JavaObject = MF.GetField("stage")
 
 
    Dim Manager As JavaObject
    Dim Factory As JavaObject
    Factory.InitializeStatic("com.pixelduke.window.ThemeWindowManagerFactory")
    Manager = Factory.RunMethod("create",Null)
    Manager.RunMethod("setWindowBackdrop",Array(Stage,"ACRYLIC"))
    Manager.RunMethod("setWindowCornerPreference",Array(Stage,"ROUND"))
    Manager.RunMethod("setWindowFrameColor",Array(Stage,fx.Colors.Black))
 
End Sub

Have fun and let me know how you get on with it. As always, check the Licence if you are going to use it commercially.

If you want to use it in a Packaged app, you will need to add the complimentary VMARGS: for the add-opens and --add-exports. As this requires at least Java 19, and possibly 21 the packager won't currently be available.

 

[Daestrum]

So to check I understand this, the code is to change the colour/style of the 'main' window. As snaptolayout already works on any b4j window.

 

[stevel05]

So to check I understand this,

Yes, you can style the Titlebar, corners etc, Which is what my replacement titlebar class is all about except in my class SnapToLayout was not available.

 

[Magma]

So to check I understand this, the code is to change the colour/style of the 'main' window. As snaptolayout already works on any b4j window.

Yes works... but if UNDECORATED form.. and total custom controls - then "snap to layout" not showing...

@stevel05 do you want to make a diffrent thread for this... ? or it is not problem ? - i am keep trying the messages...

 

[stevel05]

Ok create a new thread next time you post. I'll keep an eye out for it.

 

[stevel05]

Only problem I have is that packager cant find com.sun.jna.platform when trying to package the app.

I've been trying to get to the bottom of this, I think it's something to do with the way that the FXTheme jar has been packaged, but I don't fully understand why. If anyone has any insights please let me know.