Transparency.c File Reference

#include "Transparency.h"

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Defines
#define	WS_EX_LAYERED   0x00080000
#define	LWA_COLORKEY   0x00000001
#define	LWA_ALPHA   0x00000002
Functions
LPTW	GetTextWinScilab (void)
BOOL	IsEnableTransparencyMode (void)
BOOL	ActivateTransparencyMode (HWND hWnd)
BOOL	DisableTransparencyMode (HWND hWnd)
void	ScilabFxFadeOut (void)
int	GetCurrentAlphaLevel (void)
void	SetCurrentAlphaLevel (HWND hWnd, int Alpha)
BOOL	IncreaseAlphaLevel (void)
BOOL	DecreaseAlphaLevel (void)
Variables
static int	CurrentAlphaLevel = 255
static BOOL	TransparencyON = FALSE

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Define Documentation

#define LWA_ALPHA   0x00000002

Definition at line 16 of file Transparency.c.

Referenced by SetCurrentAlphaLevel().

#define LWA_COLORKEY   0x00000001

Definition at line 12 of file Transparency.c.

#define WS_EX_LAYERED   0x00080000

Definition at line 8 of file Transparency.c.

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Function Documentation

BOOL ActivateTransparencyMode

(

HWND

hWnd

)

Definition at line 29 of file Transparency.c.

References FALSE, TransparencyON, and TRUE.

Referenced by ON_WND_TEXT_WM_KEY().

{
        BOOL bOK=FALSE;
        TransparencyON=TRUE;
        bOK=TRUE;

        return bOK;
}

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BOOL DecreaseAlphaLevel

(

void

)

Definition at line 101 of file Transparency.c.

References Alpha, FALSE, GetCurrentAlphaLevel(), GetTextWinScilab(), tagTW::hWndParent, tagTW::hWndText, and SetCurrentAlphaLevel().

Referenced by ON_WND_TEXT_WM_KEY().

{
        BOOL bOK=FALSE;
        LPTW lptw=GetTextWinScilab();
        int Alpha=GetCurrentAlphaLevel();

        if (Alpha<0) Alpha=0;
        else
        {
                SetCurrentAlphaLevel(lptw->hWndParent ,Alpha--);
                SetCurrentAlphaLevel(lptw->hWndText ,Alpha--);
        }
        return bOK;
}

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BOOL DisableTransparencyMode

(

HWND

hWnd

)

Definition at line 38 of file Transparency.c.

References CurrentAlphaLevel, FALSE, TransparencyON, and TRUE.

Referenced by IncreaseAlphaLevel().

{
        BOOL bOK=FALSE;

        SetWindowLong(hWnd,     GWL_EXSTYLE,CS_HREDRAW | CS_VREDRAW);
        CurrentAlphaLevel=255;
        TransparencyON=FALSE;
        bOK=TRUE;

        return bOK;
}

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int GetCurrentAlphaLevel

(

void

)

Definition at line 61 of file Transparency.c.

References CurrentAlphaLevel.

Referenced by DecreaseAlphaLevel(), IncreaseAlphaLevel(), and ScilabFxFadeOut().

{
        return CurrentAlphaLevel;
}

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LPTW GetTextWinScilab

(

void

)

Definition at line 10 of file TextWindows.c.

{
        return &textwin;
}

BOOL IncreaseAlphaLevel

(

void

)

Definition at line 75 of file Transparency.c.

References Alpha, DisableTransparencyMode(), FALSE, GetCurrentAlphaLevel(), GetTextWinScilab(), tagTW::hWndParent, tagTW::hWndText, NULL, SetCurrentAlphaLevel(), and TRUE.

Referenced by ON_WND_TEXT_WM_KEY().

{
        BOOL bOK=FALSE;
        LPTW lptw=GetTextWinScilab();
        int Alpha=GetCurrentAlphaLevel();

        if (Alpha==255)
        {
                DisableTransparencyMode(lptw->hWndParent);
                DisableTransparencyMode(lptw->hWndText);
                DragAcceptFiles (lptw->hWndParent, TRUE);
                InvalidateRect(lptw->hWndParent,NULL,TRUE);
                InvalidateRect(lptw->hWndText,NULL,TRUE);
        }
        else
        {
                if (Alpha<255)
                {
                        SetCurrentAlphaLevel(lptw->hWndParent ,Alpha++);
                        SetCurrentAlphaLevel(lptw->hWndText ,Alpha++);
                        if (Alpha>255) Alpha=255;
                }
        }
        return bOK;
}

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BOOL IsEnableTransparencyMode

(

void

)

Definition at line 24 of file Transparency.c.

References TransparencyON.

Referenced by ExitWindow(), and ON_WND_TEXT_WM_KEY().

{
        return TransparencyON;
}

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void ScilabFxFadeOut

(

void

)

Definition at line 50 of file Transparency.c.

References GetCurrentAlphaLevel(), GetTextWinScilab(), tagTW::hWndParent, tagTW::hWndText, i, and SetCurrentAlphaLevel().

Referenced by ExitWindow().

{
        LPTW lptw=GetTextWinScilab();
        int i=0;
        for (i=GetCurrentAlphaLevel();i>=0;i=i-16)
        {
                SetCurrentAlphaLevel(lptw->hWndParent ,i);
                SetCurrentAlphaLevel(lptw->hWndText ,i);
        }
}

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void SetCurrentAlphaLevel	(	HWND	hWnd,
		int	Alpha
	)

Definition at line 66 of file Transparency.c.

References COLORREF, CurrentAlphaLevel, LWA_ALPHA, and NULL.

Referenced by DecreaseAlphaLevel(), IncreaseAlphaLevel(), and ScilabFxFadeOut().

{
        if ( (Alpha>=0) && (Alpha<=255) )
        {
                SetLayeredWindowAttributes(hWnd, (COLORREF)NULL,CurrentAlphaLevel, LWA_ALPHA);
        }
        CurrentAlphaLevel=Alpha;
}

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Variable Documentation

int CurrentAlphaLevel = 255 [static]

Definition at line 19 of file Transparency.c.

Referenced by DisableTransparencyMode(), GetCurrentAlphaLevel(), and SetCurrentAlphaLevel().

BOOL TransparencyON = FALSE [static]

Definition at line 20 of file Transparency.c.

Referenced by ActivateTransparencyMode(), DisableTransparencyMode(), and IsEnableTransparencyMode().

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