Would This Make A Cool Screen Saver?

[jaberwacky 327]

It's a buggy, ugly, and nasty proof of concept at this stage. Tell me what ya'll think.

newest version

Worked out the double buffer by looking at these examples by UEZ: (http://www.autoitscript.com/forum/index.php?showtopic=87200&st=0&p=625623&#entry625623)

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#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_UseUpx=n
#AutoIt3Wrapper_AU3Check_Parameters=-w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****

#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
;~ #include <HandyFunctions.au3>
#include <array.au3>

HotKeySet("{ESC}", "_terminate")

OnAutoItExitRegister("_endGDI")

Global $DW = @DesktopWidth, $DH = @DesktopHeight, $penWidth = 5, $penColor, $brushColor
Global $X, $Y, $color, $circleWidth = 1000, $radius = $circleWidth / 2, $XYBound = $penWidth + 5

Global $GUI = GUICreate("ScreenSaver", $DW, $DH, 0, 0, $WS_POPUP)

GUISetState()

_GDIPlus_Startup()

Global $hGraphics = _GDIPlus_GraphicsCreateFromHWND($GUI)
Global $hBitmap = _GDIPlus_BitmapCreateFromGraphics($DW, $DH, $hGraphics)
Global $backBuffer = _GDIPlus_ImageGetGraphicsContext($hBitmap)
Global $hPen = _GDIPlus_PenCreate(0x77000000, $penWidth)
Global $hBrush = _GDIPlus_BrushCreateSolid()

;~ _GDIPlus_GraphicsClear($backBuffer)

Do
    $color = _Color()
    $brushColor = _Color()

    $X = Random($XYBound, $DW - $XYBound, 1)
    $Y = Random($XYBound, $DH - $XYBound, 1)

    If $X < $Y Then
        $circleWidth = $DH - $Y
    Else
        $circleWidth = $DW - $X
    EndIf

    For $i = $penWidth To $circleWidth Step $penWidth
        _drawCircle()
;~      Sleep(1)
    Next

    For $i = $circleWidth To $penWidth Step -$penWidth
        _drawCircle()
;~      Sleep(1)
    Next
Until GUIGetMsg() = $GUI_EVENT_CLOSE

Exit

Func _drawCircle()
    _GDIPlus_GraphicsClear($backBuffer, $color)
    _GDIPlus_BrushSetSolidColor($hBrush, $brushColor)
    _GDIPlus_PenSetColor($hPen, $brushColor)
    _GDIPlus_GraphicsFillEllipse($backBuffer, $X, $Y, $i, $i, $hBrush)
    _GDIPlus_GraphicsDrawEllipse($backBuffer, $X, $Y, $i, $i, $hPen)
    _GDIPlus_GraphicsDrawImageRect($hGraphics, $hBitmap, 0, 0, $DW, $DH)
EndFunc ;==>_drawCircle

Func _Color()
    Local $hexColor = "0xFF" & Hex(Random(0, 255, 1) & Random(0, 255, 1) & Random(0, 255, 1), 6)

    If $hexColor = 0xFF000000 Then
        _Color()
    Else
        Return $hexColor
    EndIf
EndFunc ;==>_backGroundColor

Func _endGDI()
    _GDIPlus_PenDispose($hPen)
    _GDIPlus_GraphicsDispose($hGraphics)
    _GDIPlus_Shutdown()
    _terminate()
EndFunc ;==>_endGDI

Func _terminate()
    Exit (0)
EndFunc ;==>_terminate

Edited April 22, 2010 by jaberwocky6669

[somdcomputerguy 103]

C:\Users\Public\screensavertest.au3(6,10) : ERROR: can't open include file <HandyFunctions.au3>

[jaberwacky 327]

C:\Users\Public\screensavertest.au3(6,10) : ERROR: can't open include file <HandyFunctions.au3>

OK, I think it's good to go now...

[somdcomputerguy 103]

It runs fine now.

[AdmiralAlkex 125]

• The circle flickers to much, it hurts my eyes. Take a look at the GDI+ scripts that float around and see what they do to avoid that.
• What MvGulik said. It's pretty annoying with the quick color jumps, some fading would be nice.

Edited April 22, 2010 by AdmiralAlkex

[jaberwacky 327]

I will heed all advice, thanks!