Colour pinstripe/Display

Colour pinstripe/Display
You are encouraged to solve this task according to the task description, using any language you may know.

The task is to create 1 pixel wide colour vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display. A basic of colours should be using including black, white and each of the primary colours. The pinstripes should either use the system palette sequence or the sequence Black, Red, Green, Blue, Magenta, Cyan, Yellow, White.

After filling the top quarter of the, we switch to a wider 2 pixel wide vertical pinstripe pattern. Halfway down the display we switch to 3 pixel wide vertical pinstripe and then finally to a 4 pixels wide vertical pinstripe for the last quarter of the display.

PureBasic

<lang PureBasic>;Create a Pinstripe image with a pattern of vertical stripe colors Procedure PinstripeDisplay(width, height, Array psColors(1), numColors = 0)

 Protected x, imgID, psHeight = height / 4, psWidth = 1, psTop, horzBand, curColor

 If numColors < 1: numColors = ArraySize(psColors()) + 1: EndIf
   
 imgID = CreateImage(#PB_Any, width, height)
 If imgID
   StartDrawing(ImageOutput(imgID))
     Repeat 
       x = 0
       curColor = 0
       Repeat
         Box(x, psTop, psWidth, psHeight, psColors(curColor))
         curColor = (curColor + 1) % numColors
         x + psWidth
       Until x >= width
       psWidth + 1
       horzBand + 1
       psTop = horzBand * height / 4  ;move to the top of next horizontal band of image
     Until psTop >= height 
   StopDrawing()
 EndIf
 ProcedureReturn imgID

EndProcedure

Open a window and display the pinstripe

If OpenWindow(0, 0, 0, 1, 1,"PureBasic Pinstripe", #PB_Window_Maximize | #PB_Window_SystemMenu)

 Dim psColors(7)
 psColors(0) = RGB($00, $00, $00) ;black
 psColors(1) = RGB($FF, $00, $00) ;red
 psColors(2) = RGB($00, $FF, $00) ;green
 psColors(3) = RGB($00, $00, $FF) ;blue
 psColors(4) = RGB($FF, $00, $FF) ;magenta
 psColors(5) = RGB($00, $FF, $FF) ;cyan
 psColors(6) = RGB($FF, $FF, $00) ;yellow
 psColors(7) = RGB($FF, $FF, $FF) ;white 

 PicID = PinstripeDisplay(WindowWidth(0), WindowHeight(0), psColors())
 ImageGadget(0, 0, 0, WindowWidth(0), WindowHeight(0), ImageID(PicID))
 While WaitWindowEvent() <> #PB_Event_CloseWindow
 Wend  

EndIf</lang>

Tcl

Library: Tk

<lang tcl>package require Tcl 8.5 package require Tk 8.5

wm attributes . -fullscreen 1 pack [canvas .c -highlightthick 0] -fill both -expand 1 set colors {black red green blue magenta cyan yellow white}

set dy [expr {[winfo screenheight .c]/4}] set y 0 foreach dx {1 2 3 4} {

   for {set x 0} {$x < [winfo screenwidth .c]} {incr x $dx} {

.c create rectangle $x $y [expr {$x+$dx}] [expr {$y+$dy}] \

           -fill [lindex $colors 0] -outline {}

set colors [list {*}[lrange $colors 1 end] [lindex $colors 0]]

   }
   incr y $dy

}</lang>