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 coloured vertical pinstripes with a sufficient number of pinstripes to span the entire width of the graphics display.

The pinstripes should either follow the system palette sequence,   or a sequence that includes:
black,   red,   green,   blue,   magenta,   cyan,   yellow,   and   white:

•   after filling the top quarter, switch to a wider 2 pixel wide vertical pinstripe pattern,
•   halfway down the display, switch to 3 pixel wide vertical pinstripe,
•   finally to a 4 pixels wide vertical pinstripe for the last quarter of the display.

See also

•   display black and white
•   print colour

6502 Assembly

Works with: [Easy6502]

Output can be seen by copying and pasting this code into the code editor, then clicking "Assemble," then "Run." <lang 6502asm>define color $00 define looptemp $01

loop_1wide: lda color sta $0200,x inc color inx bne loop_1wide

loop_2wide: lda color sta $0300,x inx sta $0300,x inc color inx bne loop_2wide

lda #0 tax tay sta color sta looptemp ;reset ram

loop_3wide: lda color sta $0400,x inc looptemp inx

sta $0400,x inc looptemp inx

sta $0400,x inc looptemp inc color inx

lda looptemp cmp #$1e bne loop_3wide

lda color ;loop overhead sta $0400,x ;can't fit all of this stripe. ;two columns will have to do. inx lda color sta $0400,x inx

lda #0 sta color sta looptemp ;reset color and looptemp iny cpy #$08 ;check secondary loop counter bne loop_3wide

lda #0 tax tay sta color sta looptemp ;reset ram

loop_4wide: lda color sta $0500,x inx inc looptemp

sta $0500,x inx inc looptemp

sta $0500,x inx inc looptemp

sta $0500,x inc color inc looptemp inx

lda looptemp cmp #$20 bne loop_4wide lda #0 sta looptemp sta color

iny cpy #$8 bcc loop_4wide

brk ;program end</lang>

Action!

<lang Action!>PROC Main()

 BYTE
   i,
   CH=$02FC, ;Internal hardware value for last key pressed
   PALNTSC=$D014, ;To check if PAL or NTSC system is used
   PCOLR0=$02C0,PCOLR1=$02C1,
   PCOLR2=$02C2,PCOLR3=$02C3,
   COLOR0=$02C4,COLOR1=$02C5,
   COLOR2=$02C6,COLOR3=$02C7,
   COLOR4=$02C8
 
 Graphics(10)
 PCOLR0=$04 ;gray
 PCOLR1=$00 ;black
 IF PALNTSC=15 THEN
   PCOLR2=$42 ;red for NTSC
   PCOLR3=$C6 ;green for NTSC
   COLOR0=$84 ;blue for NTSC
   COLOR1=$66 ;magenta for NTSC
   COLOR2=$A6 ;cyan for NTSC
   COLOR3=$FC ;yellow for NTSC
 ELSE
   PCOLR2=$22 ;red for PAL
   PCOLR3=$B6 ;green for PAL
   COLOR0=$74 ;blue for PAL
   COLOR1=$48 ;magenta for PAL
   COLOR2=$96 ;cyan for PAL
   COLOR3=$EC ;yellow for PAL
 FI
 COLOR4=$0F ;white

 FOR i=0 TO 79
 DO
   Color=i MOD 8+1
   Plot(i,0) DrawTo(i,47)

   Color=i/2 MOD 8+1
   Plot(i,48) DrawTo(i,95)

   Color=i/3 MOD 8+1
   Plot(i,96) DrawTo(i,143)

   Color=i/4 MOD 8+1
   Plot(i,144) DrawTo(i,191)
 OD

 DO UNTIL CH#$FF OD
 CH=$FF

RETURN</lang>

Output:

Screenshot from Atari 8-bit computer

ActionScript

<lang ActionScript3> package {

   import flash.display.Bitmap;
   import flash.display.BitmapData;
   import flash.display.Sprite;
   import flash.events.Event;
   
   public class ColourPinstripe extends Sprite {
       
       public function ColourPinstripe():void {
           if (stage) init();
           else addEventListener(Event.ADDED_TO_STAGE, init);
       }
       
       private function init(e:Event = null):void {
           
           var colours:Array = [ 0xFF000000, 0xFFFF0000, 0xFF00FF00, 0xFF0000FF, 0xFFFF00FF, 0xFF00FFFF, 0xFFFFFF00, 0xFFFFFFFF ];
           var data:BitmapData = new BitmapData(stage.stageWidth, stage.stageHeight, false, 0xFFFFFFFF);
           data.lock();
           
           var w:uint = data.width, h:uint = data.height / 4;
           var x:uint, y:uint = 0, i:uint, px:uint, colourIndex:uint, colour:uint, maxy:uint = h;
           
           for ( i = 1; i <= 4; i++ ) {
               
               for ( ; y < maxy; y++ ) {
                   colour = 0xFF000000;
                   colourIndex = 0;
                   px = 1;
                   
                   for ( x = 0; x < w; x++ ) {
                       
                       if ( px == i ) {
                           colourIndex = (colourIndex > 7) ? 0 : colourIndex + 1;
                           colour = colours[colourIndex];
                           px = 1;
                       }
                       else px++;
                       
                       data.setPixel32(x, y, colour);
                       
                   }
               }
               
               maxy += h;
               
           }
           
           data.unlock();
           addChild(new Bitmap(data));
       }
       
   }

} </lang>

Ada

Library: SDLAda

<lang Ada>with SDL.Video.Windows.Makers; with SDL.Video.Renderers.Makers; with SDL.Video.Palettes; with SDL.Events.Events;

procedure Colour_Pinstripe_Display is

  Width   : constant := 1_200;
  Height  : constant := 800;

  Window   : SDL.Video.Windows.Window;
  Renderer : SDL.Video.Renderers.Renderer;
  Event    : SDL.Events.Events.Events;

  procedure Draw_Pinstripe (Line_Width   : in Integer;
                            Line_Height  : in Integer;
                            Screen_Width : in Integer;
                            Y            : in Integer)
  is
     type Colour_Range is (Black, Red, Green, Blue, Magenta, Cyan, Yellow, White);
     Colours : constant array (Colour_Range) of SDL.Video.Palettes.Colour
       := (Black   => (0, 0, 0, 255),     Red   => (255, 0, 0, 255),
           Green   => (0, 255, 0, 255),   Blue  => (0, 0, 255, 255),
           Magenta => (255, 0, 255, 255), Cyan  => (0, 255, 255, 255),
           Yellow  => (255, 255, 0, 255), White => (255, 255, 255, 255));
     Col   : Colour_Range := Colour_Range'First;
     Count : constant Integer := Screen_Width / Line_Width;
  begin
     for A in 0 .. Count loop
        Renderer.Set_Draw_Colour (Colour => Colours (Col));
        Renderer.Fill (Rectangle => (X => SDL.C.int (A * Line_Width), Y => SDL.C.int (Y),
                                     Width  => SDL.C.int (Line_Width),
                                     Height => SDL.C.int (Line_Height)));
        Col := (if Col = Colour_Range'Last
                  then Colour_Range'First
                  else Colour_Range'Succ (Col));
     end loop;
  end Draw_Pinstripe;

  procedure Wait is
     use type SDL.Events.Event_Types;
  begin
     loop
        while SDL.Events.Events.Poll (Event) loop
           if Event.Common.Event_Type = SDL.Events.Quit then
              return;
           end if;
        end loop;
        delay 0.100;
     end loop;
  end Wait;

begin

  if not SDL.Initialise (Flags => SDL.Enable_Screen) then
     return;
  end if;

  SDL.Video.Windows.Makers.Create (Win      => Window,
                                   Title    => "Pinstripe",
                                   Position => SDL.Natural_Coordinates'(X => 10, Y => 10),
                                   Size     => SDL.Positive_Sizes'(Width, Height),
                                   Flags    => 0);
  SDL.Video.Renderers.Makers.Create (Renderer, Window.Get_Surface);

  Draw_Pinstripe (1, Height / 4, Width, 0);
  Draw_Pinstripe (2, Height / 4, Width, 200);
  Draw_Pinstripe (3, Height / 4, Width, 400);
  Draw_Pinstripe (4, Height / 4, Width, 600);
  Window.Update_Surface;

  Wait;
  Window.Finalize;
  SDL.Finalise;

end Colour_Pinstripe_Display;</lang>

ARM Assembly

Works with: [Game Boy Advance]

Assembled using VASM (which explains why the syntax is different from how you might expect if you're used to the GNU Assembler) This uses the Game Boy Advance's bitmap screen modes; no pre-defined tilemaps are needed.

<lang ARM Assembly> .org 0x08000000 ;cartridge ROM begins here

       b ProgramStart                         ;branch around the cartridge header

       ;;;; cartridge header goes here

.equ SCREEN_WIDTH,240 ;some labels for convenience .equ SCREEN_HEIGHT,160

ProgramStart: mov sp,#0x03000000 ;set up stack pointer (we won't be using it but it's a good practice to do so anyway

mov r4,#0x04000000 ;DISPCNT (LCD Control Register) mov r2,#0x403 ;4= Layer 2 on / 3= ScreenMode 3 (Bitmap Graphics, vram at 0x06000000)

str r2,[r4] ;now the screen is visible.

mov r0,#0x06000000 ;VRAM BASE (2 BYTES PER PIXEL) mov r1,#0 ;COLOR TO STORE (INIT TO ZERO, WILL GET FILLED IN LATER)

adr r4,palArray ;get address of palette mov r5,#0 ;index into palArray mov r6,#19200 ;this is one quarter of the screen

add r7,r0,r6 ;MOV R7, #0x06004B00 add r8,r7,r6 ;MOV R8, #0x06009600 add r9,r8,r6 ;MOV R9, #0x0600E100 add r10,r9,r6 ;MOV R10,#0x06012C00

loop_pinstripe_firstQuarter: ldrH r1,[r4,r5] strH r1,[r0],#2 ;store into video memory and post-inc by 2. add r5,r5,#2 ;next color in palette and r5,r5,#0x0F ;prevents indexing out of bounds cmp r0,r7 ;have we reached the end of this quarter of the screen? blt loop_pinstripe_firstQuarter ;if not, keep drawing

loop_pinstripe_secondQuarter: ldrH r1,[r4,r5] strH r1,[r0],#2 ;post-inc by 2 after the store strH r1,[r0],#2 ;post-inc by 2 after the store add r5,r5,#2 and r5,r5,#0x0F cmp r0,r8 blt loop_pinstripe_secondQuarter

loop_pinstripe_thirdQuarter: ldrH r1,[r4,r5] strH r1,[r0],#2 ;post-inc by 2 after the store strH r1,[r0],#2 strH r1,[r0],#2 add r5,r5,#2 and r5,r5,#0x0F cmp r0,r9 blt loop_pinstripe_thirdQuarter

; the last quarter works differently. We'll need to use a different ; loop counter to get the last pinstripe mov r2,#SCREEN_WIDTH/4 ;inner loop counter mov r3,#48 ;outer loop counter

loop_pinstripe_lastQuarter: ldrH r1,[r4,r5] strH r1,[r0],#2 strH r1,[r0],#2 strH r1,[r0],#2 strH r1,[r0],#2 add r5,r5,#2 and r5,r5,#0x0F subs r2,r2,#1 bne loop_pinstripe_lastQuarter mov r5,#0 ;reset the palette pointer mov r2,#SCREEN_WIDTH/4 ;reset the inner loop counter subs r3,r3,#1 ;decrement the outer loop counter bne loop_pinstripe_lastQuarter ;if we're not done, keep going

forever: b forever ;end of program

palArray: ;GAME BOY ADVANCE USES 15-BIT COLOR. WE WON'T USE THE TOP BIT.

.word 0x0000 ;black .word 0b0000000000011111 ;red .word 0b0000001111100000 ;green .word 0b0111110000000000 ;blue .word 0b0111110000011111 ;magenta .word 0b0111111111100000 ;cyan .word 0b0000001111111111 ;yellow .word 0x7FFF ;white</lang>

Output:

Picture of output (I can't get Rosetta Code's file uploading to work)

AutoHotkey

Works with: AutoHotkey_L

Requires the GDI+ standard library: http://www.autohotkey.com/forum/viewtopic.php?t=32238
It is worth noting that this fills the whole screen; press Esc to exit. <lang AHK>h := A_ScreenHeight w := A_ScreenWidth pToken := gdip_Startup() hdc := CreateCompatibleDC() hbm := CreateDIBSection(w, h) obm := SelectObject(hdc, hbm) G := Gdip_GraphicsFromHDC(hdc)

OnExit, Exit

Gui -Caption +E0x80000 +LastFound +OwnDialogs +Owner +AlwaysOnTop Gui Show, NA hwnd := WinExist()

colors := [0xFF000000, 0xFFFF0000, 0xFF00FF00, 0xFF0000FF , 0xFFFF00FF, 0xFF00FFFF, 0xFFFFFF00, 0xFFFFFFFF] ; ARGB pBrush := [] Loop % colors.MaxIndex() pBrush[A_Index] := Gdip_BrushCreateSolid(colors[A_Index]) Loop 4 { n := A_Index Loop % w Gdip_FillRectangle(G, pBrush[Mod(A_Index-1, colors.MaxIndex())+1] , A_Index*n-n, (n-1)*h/4, n, h/4) }

UpdateLayeredWindow(hwnd, hdc, 0, 0, W, H)

Loop % colors.MaxIndex() Gdip_DeleteBrush(pBrush[A_Index])

SelectObject(hdc, obm) DeleteObject(hbm) DeleteDC(hdc) Gdip_DeleteGraphics(G) Return

Esc:: Exit: Gdip_Shutdown(pToken) ExitApp</lang>

BBC BASIC

Works with: BBC BASIC for Windows

<lang bbcbasic> SW_MAXIMIZE = 3

     SYS "ShowWindow", @hwnd%, SW_MAXIMIZE
     VDU 26
     
     W% = @vdu%!208 * 2
     H% = @vdu%!212 / 2
     
     COLOUR 1,9
     COLOUR 2,10
     COLOUR 3,12
     COLOUR 4,13
     COLOUR 5,14
     COLOUR 6,11
     COLOUR 7,15
     
     Y% = H%*4
     FOR P% = 1 TO 4
       Y% -= H%
       FOR X% = 0 TO W% STEP 4*P%
         C% = (C% + 1) MOD 8
         GCOL C%
         RECTANGLE FILL X%, Y%, 2*P%, H%
       NEXT
     NEXT P%

</lang>

Befunge

Writes the image to stdout using the PPM format. You can either redirect that to a file, or pipe it to something like ImageMagick's display utility to view the result.

The dimensions of the image are specified by the first two values on the stack: 1366 ("%":*3-) by 768 ("`"8*).

<lang befunge>"%":*3-"`"8*>4/::8%00p8/10p4*\55+"3P",,,:.\.5v 5+:,1vv\%2:%8/-g025:\-1_$$55+,\:v1+*8g01g00_@> 024,.<>2/:2%\2/...1+\:>^<:\0:\-1_$20g1-:20p^1p</lang>

C

The following code uses the BGI graphics library of Borland's Turbo C.

<lang C>

1. include<graphics.h>
2. include<conio.h>

1. define sections 4

int main() { int d=DETECT,m,maxX,maxY,x,y,colour=0,increment=1; initgraph(&d,&m,"c:/turboc3/bgi");

maxX = getmaxx(); maxY = getmaxy();

for(y=0;y<maxY;y+=maxY/sections) { for(x=0;x<maxX;x+=increment) { setfillstyle(SOLID_FILL,(colour++)%16); bar(x,y,x+increment,y+maxY/sections); } increment++; colour = 0; }

getch(); closegraph(); return 0; } </lang>

C++

<lang cpp>

1. include <windows.h>

//-------------------------------------------------------------------------------------------------- class pinstripe { public:

   pinstripe()                        { createColors(); }
   void setDimensions( int x, int y ) { _mw = x; _mh = y; }
   void createColors()
   {

colors[0] = 0; colors[1] = 255; colors[2] = RGB( 0, 255, 0 ); colors[3] = RGB( 0, 0, 255 ); colors[4] = RGB( 255, 0, 255 ); colors[5] = RGB( 0, 255, 255 ); colors[6] = RGB( 255, 255, 0 ); colors[7] = RGB( 255, 255, 255 );

   }

   void draw( HDC dc )
   {
       HPEN pen;

int lh = _mh / 4, row, cp; for( int lw = 1; lw < 5; lw++ ) { cp = 0;

           row = ( lw - 1 ) * lh;

for( int x = 0 + lw > 1 ? lw > 3 ? 2 : 1 : 0; x < _mw; x += lw ) { pen = CreatePen( PS_SOLID, lw, colors[cp] ); ++cp %= 8;

SelectObject( dc, pen ); MoveToEx( dc, x, row, NULL ); LineTo( dc, x, row + lh ); DeleteObject( pen ); } }

   }

private:

   int _mw, _mh;
   DWORD colors[8];

}; //-------------------------------------------------------------------------------------------------- pinstripe pin;

//-------------------------------------------------------------------------------------------------- void PaintWnd( HWND hWnd ) {

   PAINTSTRUCT ps;
   HDC hdc = BeginPaint( hWnd, &ps );
   pin.draw( hdc );
   EndPaint( hWnd, &ps );

} //-------------------------------------------------------------------------------------------------- LRESULT CALLBACK WndProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam ) {

   switch( msg )
   {

case WM_DESTROY: PostQuitMessage( 0 ); break; case WM_PAINT: PaintWnd( hWnd ); break; default: return DefWindowProc( hWnd, msg, wParam, lParam );

   }
   return 0;

} //-------------------------------------------------------------------------------------------------- HWND InitAll( HINSTANCE hInstance ) {

   WNDCLASSEX wcex;
   ZeroMemory( &wcex, sizeof( wcex ) );

   wcex.cbSize	       = sizeof( WNDCLASSEX );
   wcex.style	       = CS_HREDRAW | CS_VREDRAW;
   wcex.lpfnWndProc   = WndProc;
   wcex.hInstance     = hInstance;
   wcex.hCursor       = LoadCursor( NULL, IDC_ARROW );
   wcex.hbrBackground = ( HBRUSH )( COLOR_WINDOW + 1 );
   wcex.lpszClassName = "_CLR_PS_";

   RegisterClassEx( &wcex ); 
   return CreateWindow( "_CLR_PS_", ".: Clr Pinstripe -- PJorente :.", WS_POPUP, CW_USEDEFAULT, 0, 200, 200, NULL, NULL, hInstance, NULL );

} //-------------------------------------------------------------------------------------------------- int APIENTRY _tWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow ) {

   srand( GetTickCount() );

   HWND hwnd = InitAll( hInstance );
   if( !hwnd ) return -1;

   int mw = GetSystemMetrics( SM_CXSCREEN ),

mh = GetSystemMetrics( SM_CYSCREEN );

   pin.setDimensions( mw, mh );

   RECT rc = { 0, 0, mw, mh };

   AdjustWindowRectEx( &rc, WS_POPUP, FALSE, 0 );
   int w = rc.right  - rc.left, 

h = rc.bottom - rc.top;

   int posX = ( GetSystemMetrics( SM_CXSCREEN ) >> 1 ) - ( w >> 1 ),

posY = ( GetSystemMetrics( SM_CYSCREEN ) >> 1 ) - ( h >> 1 );

   SetWindowPos( hwnd, HWND_TOP, posX, posY, w, h, SWP_NOZORDER );
   ShowWindow( hwnd, nCmdShow );
   UpdateWindow( hwnd );

   MSG msg;
   ZeroMemory( &msg, sizeof( msg ) );
   while( msg.message != WM_QUIT )
   {

if( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) != 0 ) { TranslateMessage( &msg ); DispatchMessage( &msg ); }

   }
   return UnregisterClass( "_CLR_PS_", hInstance );

} //-------------------------------------------------------------------------------------------------- </lang>

Common Lisp

Using Allegro's Common Graphics. As stated in the comments, I'm using line drawing here which causes the line caps to make the edges between regions to be a bit ragged. I mention a couple of alternatives there which I'm too lazy to implement right now. <lang lisp>(in-package :cg-user)

We only need a bitmap pane - nothing fancy

(defclass draw-pane (bitmap-pane)())

close it down by clicking on it

(defmethod mouse-left-down ((pane draw-pane) buttons data)

 (declare (ignore buttons data))
 (close pane))

Create the window and draw the pinstripes

(defun make-draw-window ()

 (let ((win (make-window :one :class 'draw-pane :width 300 :height 200)))
   (draw win)))

Function to draw the pinstripes. The lines are a bit ragged at the intersections

between pinstripe sections due to the fact that common graphics uses round line

caps and there doesn't appear any way to change that. Could be fixed by using

rectangles rather than lines or, perhaps, by setting rectangular clipping regions.

(defun draw (win)

 (do ((lwidth 1 (+ 1 lwidth))
      (top 0 bottom)
      (colors (make-array 8 :initial-contents
                          '(black red green blue magenta cyan yellow white)))
      (bottom (/ (height win) 4) (+ (/ (height win) 4) bottom)))
     ((eql 5 lwidth) t)
   (with-line-width (win lwidth)
     (do ((xpos 0 (+ xpos lwidth))
          (clr-ndx 0 (mod (+ clr-ndx 1) 8)))
          ((> xpos (width win)) t)
       (with-foreground-color (win (aref colors clr-ndx))
         (draw-line win
                    (make-position xpos top)
                    (make-position xpos bottom)))))))</lang>

Factor

<lang factor>USING: accessors arrays colors.constants kernel locals math math.ranges opengl sequences ui ui.gadgets ui.render ;

CONSTANT: palette {

   COLOR: black
   COLOR: red
   COLOR: green
   COLOR: blue
   COLOR: magenta
   COLOR: cyan
   COLOR: yellow
   COLOR: white

}

CONSTANT: bands 4

TUPLE: pinstripe < gadget ;

<pinstripe> ( -- pinstripe ) pinstripe new ;

M: pinstripe pref-dim* drop { 400 400 } ;

set-color ( n -- ) palette length mod palette nth gl-color ;

draw-pinstripe ( pinstripe n -- )

   pinstripe dim>> first2 :> ( w h )
   h 4 /i :> quarter
   quarter n * :> y2
   y2 quarter - :> y1
   0 w n <range> [| x |
       x n / set-color x y1 2array x n + y2 2array gl-fill-rect
   ] each ;

M: pinstripe draw-gadget*

   bands [1,b] [ draw-pinstripe ] with each ;

<pinstripe> "Color pinstripe" open-window</lang>

FreeBASIC

<lang freebasic>' version 14-03-2017 ' compile with: fbc -s console ' or compile with: fbc -s gui

Dim As UInteger ps, col, h, w, x, y1, y2 ScreenInfo w, h

' create display size window, 8bit color (palette), no frame ScreenRes w, h, 8,, 8

h = h \ 4 : y2 = h -1

For ps = 1 To 4

   col = 0
   For x = 0 To (w - ps -1) Step ps
       Line (x, y1) - (x + ps -1, y2), col, bf
       col = (col +1) And 255
   Next
   y1 += h : y2 += h

Next

' empty keyboard buffer While Inkey <> "" : Wend 'Print : Print "hit any key to end program" Sleep End</lang>

Gambas

<lang gambas>'WARNING this takes a time to display

Public Sub Form_Open() Dim iColour As Integer[] = [Color.Black, Color.red, Color.Green, Color.Magenta, Color.Cyan, Color.Yellow, Color.white] Dim hPanel As Panel Dim siCount, siCounter, siSet As Short

With Me

 .Arrangement = Arrange.Row
 .Border = False
 .Height = 1080
 .Width = 400
 .Fullscreen = True

End With

For siCounter = 1 To 4

 For siCount = 0 To Desktop.Width Step siCounter
   hpanel = New Panel(Me)
   hpanel.Width = siCounter
   hpanel.Height = Desktop.Height / 4
   HPanel.Background = iColour[siSet]
   Inc siSet
   If siSet > 6 Then siSet = 0
 Next

Next

End </lang> Click to see output image

Go

Library: Go Graphics

Translation of: Java

<lang go>package main

import "github.com/fogleman/gg"

var palette = [8]string{

   "000000", // black
   "FF0000", // red
   "00FF00", // green
   "0000FF", // blue
   "FF00FF", // magenta
   "00FFFF", // cyan
   "FFFF00", // yellow
   "FFFFFF", // white

}

func pinstripe(dc *gg.Context) {

   w := dc.Width()
   h := dc.Height() / 4
   for b := 1; b <= 4; b++ {
       for x, ci := 0, 0; x < w; x, ci = x+b, ci+1 {
           dc.SetHexColor(palette[ci%8])
           y := h * (b - 1)
           dc.DrawRectangle(float64(x), float64(y), float64(b), float64(h))
           dc.Fill()
       }
   }

}

func main() {

   dc := gg.NewContext(900, 600)
   pinstripe(dc)
   dc.SavePNG("color_pinstripe.png")

}</lang>

Output:

Image similar to AutoHotkey entry.

Icon and Unicon

This is a modified version of the Pinstripe/Display solution. A shrunken screenshot is included.

<lang Icon>link graphics,numbers,printf

procedure main() # pinstripe

  &window := open("Colour Pinstripe","g","bg=black") |
     stop("Unable to open window")   

  WAttrib("canvas=hidden")
  WAttrib(sprintf("size=%d,%d",WAttrib("displaywidth"),WAttrib("displayheight")))
  WAttrib("canvas=maximal")
  
  Colours := ["black", "red", "green", "blue", "magenta", "cyan", "yellow", "white"]
  height := WAttrib("height")
  width  := WAttrib("width")
 
  maxbands := 4                             # bands to draw   
  bandheight := height / maxbands           # height of each band
  every bands := 1 to maxbands do {         # for each band
        top   := 1 + bandheight * (bands-1) # .. top of band
        every c := 1 to width do {
           colour := Colours[ceil((c+0.)/bands)%*Colours+1]
           if colour == "black" then next   # skip black
           else {
              Fg(colour)
              DrawLine(c,top,c,top+bandheight-1)
              }
        }
     }
  WDone()

end</lang>

Library: Icon Programming Library

graphics.icn provides graphics numbers.icn provides ceil printf.icn provides sprintf

J

<lang j> load 'viewmat'

  size=. 2{.".wd'qm' NB. J6
  size=. getscreenwh_jgtk_  NB. J7
  'rgb'viewmat (4<.@%~{:size)# ({.size) $&> 1 2 3 4#&.> <256#.255*#:i.8</lang>

Java

Works with: Java version 8

<lang java>import java.awt.*; import static java.awt.Color.*; import javax.swing.*;

public class ColourPinstripeDisplay extends JPanel {

   final static Color[] palette = {black, red, green, blue, magenta,cyan,
       yellow, white};

   final int bands = 4;

   public ColourPinstripeDisplay() {
       setPreferredSize(new Dimension(900, 600));
   }

   @Override
   public void paintComponent(Graphics g) {
       super.paintComponent(g);
       int h = getHeight();
       for (int b = 1; b <= bands; b++) {
           for (int x = 0, colIndex = 0; x < getWidth(); x += b, colIndex++) {
               g.setColor(palette[colIndex % palette.length]);
               g.fillRect(x, (b - 1) * (h / bands), x + b, b * (h / bands));
           }
       }
   }

   public static void main(String[] args) {
       SwingUtilities.invokeLater(() -> {
           JFrame f = new JFrame();
           f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
           f.setTitle("ColourPinstripeDisplay");
           f.add(new ColourPinstripeDisplay(), BorderLayout.CENTER);
           f.pack();
           f.setLocationRelativeTo(null);
           f.setVisible(true);
       });
   }

}</lang>

Julia

<lang julia>using Gtk, Graphics, Colors

function drawline(ctx, p1, p2, color, width)

   move_to(ctx, p1.x, p1.y)
   set_source(ctx, color)
   line_to(ctx, p2.x, p2.y)
   set_line_width(ctx, width)
   stroke(ctx)

end

const can = @GtkCanvas() const win = GtkWindow(can, "Colour pinstripe/Display", 400, 400) const colors = [colorant"black", colorant"red", colorant"green", colorant"blue",

         colorant"magenta", colorant"cyan", colorant"yellow", colorant"white"]

const numcolors = length(colors)

@guarded draw(can) do widget

   ctx = getgc(can)
   h = height(can)
   w = width(can)
   deltaw = 1.0
   for (i, x) in enumerate(0:deltaw:w)
       drawline(ctx, Point(x, 0.25*h), Point(x, 0), colors[i % numcolors + 1], deltaw)
   end
   for (i, x) in enumerate(0:deltaw*2:w)
       drawline(ctx, Point(x, 0.5*h), Point(x, 0.25*h), colors[i % numcolors + 1], deltaw*2)
   end
   for (i, x) in enumerate(0:deltaw*3:w)
       drawline(ctx, Point(x, 0.75*h), Point(x, 0.5*h), colors[i % numcolors + 1], deltaw*3)
   end
   for (i, x) in enumerate(0:deltaw*4:w)
       drawline(ctx, Point(x, h), Point(x, 0.75*h), colors[i % numcolors + 1], deltaw*4)
   end

end

show(can) const cond = Condition() endit(w) = notify(cond) signal_connect(endit, win, :destroy) wait(cond) </lang>

Kotlin

Translation of: Java

<lang scala>// version 1.1.0

import java.awt.* import java.awt.Color.* import javax.swing.*

class ColourPinstripeDisplay : JPanel() {

   private companion object {
       val palette = arrayOf(black, red, green, blue, magenta, cyan, yellow, white)
   }

   private val bands = 4

   init {
       preferredSize = Dimension(900, 600)
   }

   override fun paintComponent(g: Graphics) {
       super.paintComponent(g)
       for (b in 1..bands) {
           var colIndex = 0
           val h = height / bands
           for (x in 0 until width step b) {
               g.color = palette[colIndex % palette.size]
               g.fillRect(x, (b - 1) * h, b, h)
               colIndex++
           }
       }
   }

}

fun main(args: Array<String>) {

   SwingUtilities.invokeLater {
       val f = JFrame()
       f.defaultCloseOperation = JFrame.EXIT_ON_CLOSE
       f.title = "ColourPinstripeDisplay"
       f.add(ColourPinstripeDisplay(), BorderLayout.CENTER)
       f.pack()
       f.setLocationRelativeTo(null)
       f.isVisible = true
   }

}</lang>

M2000 Interpreter

Module names and variables with same name may exist Above and inside M2000 console layer there are 32 layers. These layers used for text/graphics and as sprites. We can make window forms above console window, any number of them and for forms 100 we can use background as layer too. Behind console layer is the background layer (the console window) and also there we can use it for printing. Also there is one more layer, the printer layer which hold a page. For eedilayers as background, console and sprites we can use Input too. This command can't be used in user windows, we have to use controls and events. Sprite layers have a priority number, so 32 is the top one. We can change priorities sending back any sprite.

Version 2 We change console width and height and put in the center of screen We use a thread to move the layer above console (and inside console form), when we push any mouse button (only in console window). Program ends when we close the modal opened window.

<lang M2000 Interpreter> Module Checkit {

     Window 16, 14000,12000;
     Module Pinstripe {
           Smooth off  ' use of GDI32
           Dim colors(0 to 7)
           Colors(0)=#000000,#FF0000, #00FF00, #0000FF, #FF00FF, #00FFFF, #FFFF00, #FFFFFF
           pixelsX=scale.x/twipsX
           pixelsY=scale.y/twipsY
           zoneheight=scale.y/4
           n=0
           Refresh 5000
           For i=1 to 4 {
                 move 0, (i-1)*zoneheight
                 pinw=i*twipsx
                 For j=1 to pixelsX/i {
                       Fill pinw, zoneheight, color(n)
                       Step  0, -zoneheight
                       n++:if n=8 then n=0
                 }
           }
           \\ now we make the refersh
           Refresh 100
     }
     \\ draw to console window
     \\ now we make a window and draw there
     Pinstripe
     Layer 32 {
           Window 12, 10000,10000
           Pinstripe
           Show
     }
     Declare Pinstripe Form
     Layer Pinstripe {
           Window 12, 10000,10000
           Pinstripe
           motion 2000, 2000
     }
     refresh 20
           Thread {
                if control$="MAIN" then if mouse then player 32,  mousea.x, mousea.y
           } as anyvar interval 100
     
     Method Pinstripe, "Show", 1
     Threads Erase
     Layer 32 {Hide}
     Cls

} Checkit

</lang>

Maple

<lang Maple> colors := [yellow, black, red, green, magenta, cyan, white]: plots:-display( [

   seq( plot([1+i/10,y,y=5..6], color=colors[i mod 7 + 1],thickness=1), i = 1..500), 
   seq( plot([1+i/10,y,y=4..5], color=colors[i mod 7 + 1],thickness=2), i = 1..500),seq( plot([1+i/10,y,y=3..4], color=colors[i mod 7 + 1],thickness=3), i = 1..500),seq( plot([1+i/10,y,y=2..3], color=colors[i mod 7 + 1],thickness=4,size=[interface(screenwidth)*20,interface(screenheight)*32]), i = 1..500)],

axes=none); </lang>

Mathematica / Wolfram Language

<lang Mathematica>color[y_] := {Black, Red, Green, Blue, Magenta, Cyan, Yellow,

   White}[[Mod[y, 8] + 1]];

Graphics[Join[{Thickness[1/408]},

 Flatten[{color[#], Line[{{# - 1/2, 408}, {# - 1/2, 307}}]} & /@ 
   Range[408]], {Thickness[1/204]}, 
 Flatten[{color[#], Line[[[:Template:2]]]} & /@ 
   Range[204]], {Thickness[1/136]}, 
 Flatten[{color[#], Line[[[:Template:3]]]} & /@ 
   Range[136]], {Thickness[1/102]}, 
 Flatten[{color[#], Line[[[:Template:4]]]} & /@ 
   Range[102]]], ImageSize -> {408, 408}]</lang>

Output:

See here.

Nim

Library: gintro

<lang Nim>import gintro/[glib, gobject, gtk, gio, cairo]

const

 Width = 420
 Height = 420

const Colors = [[0.0, 0.0, 0.0], [255.0, 0.0, 0.0],

               [0.0, 255.0, 0.0], [0.0, 0.0, 255.0],
               [255.0, 0.0, 255.0], [0.0, 255.0, 255.0],
               [255.0, 255.0, 0.0], [255.0, 255.0, 255.0]]

1. ---------------------------------------------------------------------------------------------------

proc draw(area: DrawingArea; context: Context) =

 ## Draw the color bars.

 const lineHeight = Height div 4

 var y = 0.0
 for lineWidth in [1.0, 2.0, 3.0, 4.0]:
   context.setLineWidth(lineWidth)
   var x = 0.0
   var colorIndex = 0
   while x < Width:
     context.setSource(Colors[colorIndex])
     context.moveTo(x, y)
     context.lineTo(x, y + lineHeight)
     context.stroke()
     colorIndex = (colorIndex + 1) mod Colors.len
     x += lineWidth
   y += lineHeight

1. ---------------------------------------------------------------------------------------------------

proc onDraw(area: DrawingArea; context: Context; data: pointer): bool =

 ## Callback to draw/redraw the drawing area contents.

 area.draw(context)
 result = true

1. ---------------------------------------------------------------------------------------------------

proc activate(app: Application) =

 ## Activate the application.

 let window = app.newApplicationWindow()
 window.setSizeRequest(Width, Height)
 window.setTitle("Color pinstripe")

 # Create the drawing area.
 let area = newDrawingArea()
 window.add(area)

 # Connect the "draw" event to the callback to draw the color bars.
 discard area.connect("draw", ondraw, pointer(nil))

 window.showAll()

1. ———————————————————————————————————————————————————————————————————————————————————————————————————

let app = newApplication(Application, "Rosetta.ColorPinstripe") discard app.connect("activate", activate) discard app.run()</lang>

OCaml

<lang ocaml>open Graphics

let () =

 open_graph "";
 let width = size_x ()
 and height = size_y () in
 let colors = [| black; red; green; blue; magenta; cyan; yellow; white |] in
 let num_colors = Array.length colors in
 let h = height / 4 in
 for i = 1 to 4 do
   let j = 4 - i in
   for x = 0 to pred width do
     set_color colors.((x / i) mod num_colors);
     moveto x (j * h); lineto x (j * h + h);
   done
 done;
 ignore(read_key())</lang>

run with:

$ ocaml graphics.cma pinstripe.ml

Perl

<lang Perl>#!/usr/bin/perl -w use strict ; use GD ;

my $image = new GD::Image( 320 , 240 ) ; my %colors = ( "white" => [ 255 , 255 , 255 ] , "red" => [255 , 0 , 0 ] ,

     "green" => [ 0 , 255 , 0 ] , "blue" => [ 0 , 0 , 255 ] , 
     "magenta" => [ 255 , 0 , 255 ] , "yellow" => [ 255 , 255 , 0 ] ,
     "cyan" => [ 0 , 255 , 255 ] , "black" => [ 0 , 0 , 0 ] ) ;

my @paintcolors ; foreach my $color ( keys %colors ) {

  my $paintcolor = $image->colorAllocate( @{$colors{ $color }} ) ; 
  push @paintcolors, $paintcolor ;

} my $startx = 0 ; my $starty = 0 ; my $run = 0 ; my $barheight = 240 / 4 ; my $colorindex = 0 ; while ( $run < 4 ) {

  my $barwidth =  $run + 1 ;
  while ( $startx + $barwidth < 320 ) {
     $image->filledRectangle( $startx , $starty , $startx + $barwidth , 

$starty + $barheight - 1 , $paintcolors[ $colorindex % 8 ] ) ;

     $startx += $barwidth ;
     $colorindex++ ;
  }
  $starty += $barheight ;
  $startx = 0 ;
  $colorindex = 0 ;
  $run++ ;
}

open ( DISPLAY , ">" , "pinstripes.png" ) || die ; binmode DISPLAY ; print DISPLAY $image->png ; close DISPLAY ;</lang>

Phix

Library: Phix/pGUI

--
-- demo\rosetta\Colour_pinstripe.exw
-- =================================
--
with javascript_semantics -- but not yet CD_PRINTER
include pGUI.e

constant colours = {CD_BLACK, CD_RED, CD_GREEN, CD_MAGENTA, CD_CYAN, CD_YELLOW, CD_WHITE}
--constant colours = {CD_BLACK, CD_WHITE}

procedure draw_to(cdCanvas cdcanvas)
    cdCanvasActivate(cdcanvas)
    integer {width, height} = cdCanvasGetSize(cdcanvas) 
    for y=1 to 4 do
        integer x = 0, c = 1, h = floor(height/(5-y))
        while x<width do
            cdCanvasSetForeground(cdcanvas, colours[c])
            cdCanvasBox(cdcanvas, x, x+y, height-h, height)
            x += y
            c = iff(c=length(colours)?1:c+1)
        end while
        height -= h
    end for
    cdCanvasFlush(cdcanvas)
end procedure

Ihandle dlg, canvas
cdCanvas cddbuffer, cdcanvas

function redraw_cb(Ihandle /*ih*/)
    draw_to(cddbuffer)
    return IUP_DEFAULT
end function

function map_cb(Ihandle ih)
    cdcanvas = cdCreateCanvas(CD_IUP, ih)
    cddbuffer = cdCreateCanvas(CD_DBUFFER, cdcanvas)
    return IUP_DEFAULT
end function

function unmap_cb(Ihandle /*ih*/)
    cdKillCanvas(cddbuffer)
    cdKillCanvas(cdcanvas)
    return IUP_DEFAULT
end function

function print_cb(Ihandle /*ih*/)
    if platform()!=JS then
        cdCanvan print_canvas = cdCreateCanvas(CD_PRINTER, "pinstripe -d") 
        if print_canvas!=NULL then 
            draw_to(print_canvas)
            cdKillCanvas(print_canvas) 
        end if 
    end if 
    return IUP_DEFAULT
end function

function exit_cb(Ihandle /*ih*/)
    return IUP_CLOSE
end function

procedure main()
    IupOpen()

    Ihandle file_menu = IupMenu({IupMenuItem("&Print",Icallback("print_cb")),
                                 IupMenuItem("E&xit", Icallback("exit_cb"))})

    Ihandle main_menu = IupMenu({IupSubmenu("File", file_menu)})

    canvas = IupCanvas(NULL)
    IupSetAttribute(canvas, "RASTERSIZE", "600x400") -- initial size

    IupSetCallback(canvas, "MAP_CB",    Icallback("map_cb"))
    IupSetCallback(canvas, "UNMAP_CB",  Icallback("unmap_cb"))

    dlg = IupDialog(canvas)
    IupSetAttribute(dlg, "TITLE", "Colour pinstripe")
    IupSetAttributeHandle(dlg,"MENU",main_menu)
    IupSetCallback(canvas, "ACTION", Icallback("redraw_cb"))
    IupShowXY(dlg,IUP_CENTER,IUP_CENTER)
    IupSetAttribute(canvas, "RASTERSIZE", NULL) -- release the minimum limitation
    if platform()!=JS then
        IupMainLoop()
        IupClose()
    end if
end procedure

main()

Simply change constant colours to {CD_BLACK, CD_WHITE} for the monochrome tasks (as redirected here).

For the print tasks redirected here, note the routine draw_to() draws 4 bands each one quarter of the page height (with truncation to whole pixels and knock-on-rounding), however cdCanvasGetSize() actually returns {width, height, width_mm, height_mm}, the canvas size in pixels and in millimetres, and from that it is assumed it would be trivial to change the calculation of h from height/4 to 1 inch, and also the "for y=1 to 4 do" to "while height do", all in that one draw_to() routine.

PicoLisp

<lang PicoLisp>(de *Colors # Black Red Green Blue Magenta Cyan Yellow White

  ((0 0 0) (255 0 0) (0 255 0) (0 0 255)
     (255 0 255) (0 255   255) (255 255 0) (255 255 255) .) )

(let Ppm # Create PPM of 384 x 288 pixels

  (make
     (for N 4
        (let L
           (make
              (do (/ 384 N)
                 (let C (pop *Colors)
                    (do N (link C)) ) ) )
           (do 72 (link L)) ) ) )
  (out '(display)  # Pipe to ImageMagick
     (prinl "P6")  # NetPBM format
     (prinl (length (car Ppm)) " " (length Ppm))
     (prinl 255)
     (for Y Ppm (for X Y (apply wr X))) ) )</lang>

Plain English

<lang plainenglish>To run: Start up. Clear the screen. Imagine a box with the screen's left and the screen's top and the screen's right and the screen's bottom divided by 4. Make a color pinstripe given 1 pixel and the box. Draw the color pinstripe. Draw the next color pinstripe given the color pinstripe. Draw the next color pinstripe given the color pinstripe. Draw the next color pinstripe given the color pinstripe. Refresh the screen. Wait for the escape key. Shut down.

A color pinstripe has a width and a box.

To make a color pinstripe given a width and a box: Put the width into the color pinstripe's width. Put the box into the color pinstripe's box.

To draw a color pinstripe: Put the color pinstripe's box into a bound box. Put the color pinstripe's width into a width. Imagine a box with the bound's left and the bound's top and the width and the bound's bottom. Put the bound's right divided by the width into an amount. Loop. If a counter is past the amount, exit. Draw and fill the box with the black color. Move the box right the width. Draw and fill the box with the red color. Move the box right the width. Draw and fill the box with the green color. Move the box right the width. Draw and fill the box with the blue color. Move the box right the width. Draw and fill the box with the magenta color. Move the box right the width. Draw and fill the box with the cyan color. Move the box right the width. Draw and fill the box with the yellow color. Move the box right the width. Draw and fill the box with the white color. Repeat.

To draw the next color pinstripe given a color pinstripe: Add 1 pixel to the color pinstripe's width. Move the color pinstripe's box down the color pinstripe's box's height. Draw the color pinstripe.</lang>

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>

Python

<lang Python> from turtle import *

colors = ["black", "red", "green", "blue", "magenta", "cyan", "yellow", "white"]

1. Middle of screen is 0,0

screen = getscreen()

left_edge = -screen.window_width()//2

right_edge = screen.window_width()//2

quarter_height = screen.window_height()//4

half_height = quarter_height * 2

speed("fastest")

for quarter in range(4):

   pensize(quarter+1)
   colornum = 0

   min_y = half_height - ((quarter + 1) * quarter_height)
   max_y = half_height - ((quarter) * quarter_height)
   
   for x in range(left_edge,right_edge,quarter+1):
       penup()
       pencolor(colors[colornum])
       colornum = (colornum + 1) % len(colors)
       setposition(x,min_y)
       pendown()
       setposition(x,max_y)
        

notused = input("Hit enter to continue: ") </lang>

Racket

<lang Racket>

1. lang racket/gui

(define-values [W H] (get-display-size #t))

(define parts 4) (define colors

 '("Black" "Red" "Green" "Blue" "Magenta" "Cyan" "Yellow" "White"))

(define (paint-pinstripe canvas dc)

 (send dc set-pen "black" 0 'transparent)
 (send dc set-brush "black" 'solid)
 (define H* (round (/ H parts)))
 (for ([row parts])
   (define Y (* row H*))
   (for ([X (in-range 0 W (add1 row))] [c (in-cycle colors)])
     (send dc set-brush c 'solid)
     (send dc draw-rectangle X Y (add1 row) H*))))

(define full-frame%

 (class frame%
   (define/override (on-subwindow-char r e)
     (when (eq? 'escape (send e get-key-code))
       (send this show #f)))
   (super-new
    [label "Color Pinstripe"] [width W] [height H]
    [style '(no-caption no-resize-border hide-menu-bar no-system-menu)])
   (define c (new canvas% [parent this] [paint-callback paint-pinstripe]))
   (send this show #t)))

(void (new full-frame%)) </lang>

Raku

(formerly Perl 6) <lang perl6>my ($x,$y) = 1280, 720;

my @colors = map -> $r, $g, $b { [$r, $g, $b] },

    0,   0,   0,
  255,   0,   0,
    0, 255,   0,
    0,   0, 255,
  255,   0, 255,
    0, 255, 255,
  255, 255,   0,
  255, 255, 255;

my $img = open "pinstripes.ppm", :w orelse die "Can't create pinstripes.ppm: $_";

$img.print: qq:to/EOH/;

   P3
   # pinstripes.ppm
   $x $y
   255
   EOH

my $vzones = $y div 4; for 1..4 -> $width {

   my $stripes = ceiling $x / $width / +@colors;
   my $row = [flat ((@colors Xxx $width) xx $stripes).map: *.values].splice(0,$x);
   $img.put: $row for ^$vzones;

}

$img.close;</lang>

Ring

<lang ring>

1. Project : Colour pinstripe/Display

load "guilib.ring"

paint = null

new qapp

       {
       win1 = new qwidget() {
                 setwindowtitle("archimedean spiral")
                 setgeometry(100,100,500,600)
                 label1 = new qlabel(win1) {
                             setgeometry(10,10,400,400)
                             settext("")
                 }
                 new qpushbutton(win1) {
                         setgeometry(150,500,100,30)
                         settext("draw")
                         setclickevent("draw()")
                 }
                 show()
       }
       exec()
       }

func draw

       p1 = new qpicture()
              color = new qcolor() {
              setrgb(0,0,255,255)
       }
       pen = new qpen() {
                setcolor(color)
                setwidth(1)
       }
       paint = new qpainter() {
                 begin(p1)
                 setpen(pen)
       w = 100
       h = 100
       color = list(8)
       color[1] = [0 ,0, 0]
       color[2] = [255, 0, 0]
       color[3] = [0, 255, 0]
       color[4] = [0, 0, 255]
       color[5] = [255, 0, 255]
       color[6] = [0, 255, 255]
       color[7] = [255, 255, 0]
       color[8] = [255, 255, 255]
       y = h*4
       for p = 1 to 4
            y = y - h
            for x = 0 to w step 4*p
                 col = random(7) + 1
                 color2 = new qcolor()
                 color2.setrgb(color[col][1],color[col][2],color[col][3],255)
                 mybrush = new qbrush() {setstyle(1) setcolor(color2)}
                 setbrush(mybrush)
                 paint.drawrect(x, y, 2*p, h)
            next
       next 
       endpaint()
       }
       label1 { setpicture(p1) show() }

</lang>

See image:

Colour pinstripe/Display

Scala

Java Swing Interoperability

<lang Scala>import java.awt.Color._ import java.awt._

import javax.swing._

object ColourPinstripeDisplay extends App {

 private def palette = Seq(black, red, green, blue, magenta, cyan, yellow, white)

 SwingUtilities.invokeLater(() =>
   new JFrame("Colour Pinstripe") {

     class ColourPinstripe_Display extends JPanel {

       override def paintComponent(g: Graphics): Unit = {
         val bands = 4

         super.paintComponent(g)
         for (b <- 1 to bands) {
           var colIndex = 0
           for (x <- 0 until getWidth by b) {
             g.setColor(ColourPinstripeDisplay.palette(colIndex % ColourPinstripeDisplay.palette.length))
             g.fillRect(x, (b - 1) * (getHeight / bands), x + b, b * (getHeight / bands))
             colIndex += 1
           }
         }
       }

       setPreferredSize(new Dimension(900, 600))
     }

     add(new ColourPinstripe_Display, BorderLayout.CENTER)
     pack()
     setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE)
     setLocationRelativeTo(null)
     setVisible(true)
   }
 )

}</lang>

Sidef

Translation of: Perl

<lang ruby>require('GD')

func pinstripes(width = 1280, height = 720) {

   var im = %O<GD::Image>.new(width, height)
   var colors = [0, 255].variations_with_repetition(3)

   var paintcolors = colors.shuffle.map {|rgb|
       im.colorAllocate(rgb...)
   }

   var starty     = 0
   var barheight  = height//4

   for barwidth in (1..4) {
       for (
           var(startx = 0, colorindex = 0);
           startx + barwidth <= width;
           startx += barwidth
       ) {
           im.filledRectangle(startx, starty, startx+barwidth,
               starty + barheight - 1, paintcolors[colorindex++ % 8])
       }
       starty += barheight
   }

   return im

}

File('pinstripes.png').write(pinstripes().png, :raw)</lang>

SmileBASIC

<lang smilebasic>FOR I=1 TO 4

COLIDX=0
YTOP=(I-1)*60
FOR X=0 TO 399 STEP I
 IF COLIDX MOD 8==0 THEN
  RESTORE @COLOURS
 ENDIF
 READ R,G,B
 GFILL X,YTOP,X+I,YTOP+59,RGB(R,G,B)
 INC COLIDX
NEXT

NEXT

@COLOURS DATA 0,0,0 DATA 255,0,0 DATA 0,255,0 DATA 0,0,255 DATA 255,0,255 DATA 0,255,255 DATA 255,255,0 DATA 255,255,255</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>

Visual Basic .NET

<lang vbnet>Public Class Main

   Inherits System.Windows.Forms.Form
   Public Sub New()
       Me.FormBorderStyle = FormBorderStyle.None
       Me.WindowState = FormWindowState.Maximized
   End Sub
   Private Sub Main_Load(sender As Object, e As EventArgs) Handles Me.Load
       Dim Index As Integer
       Dim Colors() As Color = {Color.Black, Color.Red, Color.Green, Color.Magenta, Color.Cyan, Color.Yellow, Color.White}
       Dim Height = (Me.ClientSize.Height / 4) + 1
       For y = 1 To 4
           Dim Top = Me.ClientSize.Height / 4 * (y - 1)
           For x = 0 To Me.ClientSize.Width Step y
               If Index = 6 Then Index = 0 Else Index += 1
               Me.Controls.Add(New Panel With {.Top = Top, .Height = Height, .Left = x, .Width = y, .BackColor = Colors(Index)})
           Next
       Next
   End Sub

End Class</lang>

Wren

Translation of: Go

Library: DOME

<lang ecmascript>import "graphics" for Canvas, Color import "dome" for Window

class Game {

   static init() {
       Window.title = "Color pinstripe"
       __width = 900
       __height = 600
       Canvas.resize(__width, __height)
       Window.resize(__width, __height)
       var colors = [
           Color.hex("000000"), // black
           Color.hex("FF0000"), // red
           Color.hex("00FF00"), // green
           Color.hex("0000FF"), // blue
           Color.hex("FF00FF"), // magenta
           Color.hex("00FFFF"), // cyan
           Color.hex("FFFF00"), // yellow
           Color.hex("FFFFFF")  // white
       ]
       pinstripe(colors)
   }

   static pinstripe(colors) {
       var w = __width
       var h = (__height/4).floor
       for (b in 1..4) {
           var x = 0
           var ci = 0
           while (x < w) {
               var y = h * (b - 1)
               Canvas.rectfill(x, y, b, h, colors[ci%8])
               x = x + b
               ci = ci + 1
           }
       }
   }

   static update() {}

   static draw(dt) {}

}</lang>

XPL0

<lang XPL0>code ChIn=7, Point=41, SetVid=45; int X, Y, W, C; [SetVid($13); \set 320x200 graphics mode in 256 colors for Y:= 0 to 200-1 do \for all the scan lines...

   [W:= Y/50 + 1;              \width of stripe = 1, 2, 3, 4
   C:= 0;                      \set color to black so first pixel becomes blue
   for X:= 0 to 320-1 do       \for all the pixels on a scan line...
       [if rem(X/W) = 0 then C:= C+1;  \cycle through all system colors
       Point(X, Y, C);         \set pixel at X,Y to color C
       ];
   ];

X:= ChIn(1); \wait for keystroke SetVid(3); \restore normal text mode display ]</lang>

Yabasic

Translation of: SmileBASIC

<lang Yabasic>w = 640 : h = 480 open window w, h h4 = h/4

FOR I=1 TO 4

   COLIDX=0
   YTOP=(I-1)*h4
   FOR X=1 TO w STEP I
       IF mod(COLIDX, 8) = 0 RESTORE COLOURS
       READ R,G,B
       color R, G, B
       fill rectangle X,YTOP,X+I,YTOP+h4
       COLIDX = COLIDX + 1
   NEXT

NEXT

label COLOURS DATA 0,0,0 DATA 255,0,0 DATA 0,255,0 DATA 0,0,255 DATA 255,0,255 DATA 0,255,255 DATA 255,255,0 DATA 255,255,255 </lang>