Android Code Snippet [B4X] [B4XCanvas] Fill a panel with diagonally drawn lines

1649163046065.png

Usage:
FillWithDiagonallyDrawnLines(xpnl_Main,15dip,20dip,xui.Color_ARGB(255,49, 138, 123))
B4X:
Private Sub FillWithDiagonallyDrawnLines(Target As B4XView,Thickness As Float,GapBetween As Float,Color As Int)
  
    Dim Width As Float = Target.Width
    Dim Height As Float = Target.Height
  
    Dim xcv As B4XCanvas
    xcv.Initialize(Target)
  
    Dim p As Float = -(IIf(Width > Height,Width,Height))-Thickness

    Do While p <= Width
      
        xcv.DrawLine(p,0 - (Thickness/2),Width + p,Height + (Thickness/2),Color,Thickness) 
        p = p + GapBetween + Thickness
      
    Loop
  
    xcv.Invalidate
  
End Sub
 
Last edited:

Alexander Stolte

Expert
Licensed User
1649401952691.png

B4X:
FillWithDiagonallyDrawnLines2(Pane1,2dip,4dip,xui.Color_ARGB(100,0,0,0))
B4X:
Private Sub FillWithDiagonallyDrawnLines2(Target As B4XView,Thickness As Float,GapBetween As Float,Color As Int)
   
    Dim Width As Float = Target.Width
    Dim Height As Float = Target.Height
   
    Dim xcv As B4XCanvas
    xcv.Initialize(Target)
   
    Dim p As Float = -(IIf(Width > Height,Width,Height))-Thickness

    Do While p <= Width
        xcv.DrawLine(p,Height + (Thickness/2),Width + p,0 - (Thickness/2),Color,Thickness)      
        p = p + GapBetween + Thickness      
    Loop

    xcv.Invalidate
   
End Sub
 

Alexander Stolte

Expert
Licensed User
1649540207285.png

B4X:
FillWithDiagonallyDrawnLines3(Pane2,4dip,8dip,xui.Color_ARGB(100,0,0,0))
B4X:
Private Sub FillWithDiagonallyDrawnLines3(Target As B4XView,Thickness As Float,GapBetween As Float,Color As Int)
    
    Dim Width As Float = Target.Width
    Dim Height As Float = Target.Height
    
    Dim xcv As B4XCanvas
    xcv.Initialize(Target)
    
    Dim p As Float = -(IIf(Width > Height,Width,Height))-Thickness
    Do While p <= Width
        xcv.DrawLine(p,Target.Height,p+GapBetween,0,Color,Thickness)       
        p = p + GapBetween + Thickness
    Loop

    xcv.Invalidate
    
End Sub
 
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