Android Code Snippet Managing color themes with Designer Script Extensions

I am glad, that I found now a solution for my wish, managing the colors in designer and at runtime. It's still not 100% what I was looking for, but it is possible to change colors in one place, no need to go through all views of all designer files. It works with the Designer Script Extensions, using my own class "MyDDD", so the DDD / DesignerUtils are not needed for this. Just having a method with parameters (DesignerArgs As DesignerArgs) makes the class and the method visible in the Designer Script.

Sub Class_Globals
    Private xui As XUI
    Public i_Colors() As Int 'Public, if you also want to change color themes at runtime
End Sub

'Initializes the object. You can add parameters to this method if needed.
Public Sub Initialize
    'Define color themes here
    Dim iColors() As Int = Array As Int(xui.Color_Black, xui.Color_Gray, 0x37AFE100, 0x4CC9FE00, 0xF5F4B300, 0xFFFECB00)
    i_Colors = iColors
End Sub

Public Sub GetColor(colorType As Int) As Int
    If colorType = -1 Then Return -1 'no setting
    Return i_Colors(colorType)
End Sub

'Parameters: BackColorID, TextColorID, View(s)
Private Sub SetColor(DesignerArgs As DesignerArgs)
    'In B4i and B4J the script will run multiple times. We want to run this code once.
    If DesignerArgs.FirstRun Then
        Dim iBackColor As Int = GetColor(DesignerArgs.Arguments.Get(0))
        Dim iTextColor As Int = GetColor(DesignerArgs.Arguments.Get(1))
        For i = 2 To DesignerArgs.Arguments.Size - 1
            Dim v As B4XView = DesignerArgs.GetViewFromArgs(i)
            If iBackColor <> -1 Then  v.Color = iBackColor
            If iTextColor <> -1 Then  v.TextColor = iTextColor
        Next
    End If
End Sub

MyDDD.SetColor(2, 4, Label1, Label2, Button1)
MyDDD.SetColor(3, -1, Panel1)
MyDDD.SetColor(-1, 4, Label3, Label4)

'This event will be called once, before the page becomes visible.
Private Sub B4XPage_Created (Root1 As B4XView)
   
    'only, if runtime changes are needed (Public MyDD As MyDDD in Main Process_Globals)
    Main.MyDD.Initialize
   
    Root = Root1
    Root.LoadLayout("MainPage") 'all colors are already as defined in MyDDD class
   
    'also change colors at runtime
    Label2.TextColor = Main.MyDD.GetColor(0)
    SwiftButton1.SetColors(Main.MyDD.GetColor(4), Main.MyDD.GetColor(5))
   
End Sub

 

[pliroforikos]

Hello, thanks,
Could you please make a 3 page example demonstrating this?

thank you

 

[Cadenzo]

Could you please make a 3 page example demonstrating this?

Done now with a 2 page example in the first thread

 

[pliroforikos]

So, for every different view we have to make an other sub suitable to current view in order to place the colors? Or i am wrong?

 

[Cadenzo]

So, for every different view we have to make an other sub suitable to current view in order to place the colors?

In every layout we have to set colors in the designer script for all views, that we want to change flexible. But I think, that's even faster than set the colors in the designer properties. And we have to do this only once, even if we change colors later.