src/x11/colour.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        colour.cpp
// Purpose:     wxColour class
// Author:      Julian Smart, Robert Roebling
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart, Robert Roebling
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////


#ifdef __GNUG__
#pragma implementation "colour.h"
#endif

#include "wx/gdicmn.h"
#include "wx/app.h"

#include "wx/x11/private.h"

//-----------------------------------------------------------------------------
// wxColour
//-----------------------------------------------------------------------------

class wxColourRefData: public wxObjectRefData
{
public:
    wxColourRefData()
    {
        m_color.red = 0;
        m_color.green = 0;
        m_color.blue = 0;
        m_color.pixel = 0;
        m_colormap = (WXColormap *) NULL;
        m_hasPixel = FALSE;
    }

    ~wxColourRefData()
    {
        FreeColour();
    }

    bool operator == (const wxColourRefData& data) const
    {
        return (m_colormap == data.m_colormap &&
                m_hasPixel == data.m_hasPixel &&
                m_color.red == data.m_color.red &&
                m_color.green == data.m_color.green &&
                m_color.blue == data.m_color.blue &&
                m_color.pixel == data.m_color.pixel);
    }

    void FreeColour();
    void AllocColour( WXColormap cmap );

    XColor       m_color;
    WXColormap   m_colormap;
    bool         m_hasPixel;

    friend class wxColour;

    // reference counter for systems with <= 8-Bit display
    static unsigned short colMapAllocCounter[ 256 ];
};

unsigned short wxColourRefData::colMapAllocCounter[ 256 ] =
{
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

void wxColourRefData::FreeColour()
{
#if 0
    if (m_colormap)
    {
        Colormap cm = (Colormap)m_colormap;

        GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap;
        if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
            (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
        {
            int idx = m_color.pixel;
            colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;

            if (colMapAllocCounter[ idx ] == 0)
            gdk_colormap_free_colors( m_colormap, &m_color, 1 );
        }
    }
#endif
}

void wxColourRefData::AllocColour( WXColormap cmap )
{
    if (m_hasPixel && (m_colormap == cmap))
        return;

    FreeColour();

#if 0
    GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap;
    if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
        (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
    {
        m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
        int idx = m_color.pixel;
        colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
    }
    else
#endif
    {
        m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
    }
    m_colormap = cmap;
}

//-----------------------------------------------------------------------------

#define M_COLDATA ((wxColourRefData *)m_refData)

#define SHIFT (8*(sizeof(short int)-sizeof(char)))

IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)

wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
{
    m_refData = new wxColourRefData();
#if wxUSE_NANOX
    M_COLDATA->m_color.red = ((unsigned short)red) ;
    M_COLDATA->m_color.green = ((unsigned short)green) ;
    M_COLDATA->m_color.blue = ((unsigned short)blue) ;
#else
    M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
    M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
    M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
#endif
    M_COLDATA->m_color.pixel = 0;
}

void wxColour::InitFromName( const wxString &colourName )
{
    wxNode *node = (wxNode *) NULL;
    if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
    {
        wxColour *col = (wxColour*)node->Data();
        UnRef();
        if (col) Ref( *col );
    }
    else
    {
        m_refData = new wxColourRefData();

        M_COLDATA->m_colormap = wxTheApp->GetMainColormap( wxGlobalDisplay() );

        if (!XParseColor( wxGlobalDisplay(), (Colormap) M_COLDATA->m_colormap, colourName.mb_str(), &M_COLDATA->m_color ))
        {
            // VZ: asserts are good in general but this one is triggered by
            //     calling wxColourDatabase::FindColour() with an
            //     unrecognized colour name and this can't be avoided from the
            //     user code, so don't give it here
            //
            //     a better solution would be to changed code in FindColour()

            //wxFAIL_MSG( wxT("wxColour: couldn't find colour") );

            delete m_refData;
            m_refData = (wxObjectRefData *) NULL;
        }
    }
}

wxColour::~wxColour()
{
}

bool wxColour::operator == ( const wxColour& col ) const
{
    if (m_refData == col.m_refData) return TRUE;

    if (!m_refData || !col.m_refData) return FALSE;

    XColor *own = &(((wxColourRefData*)m_refData)->m_color);
    XColor *other = &(((wxColourRefData*)col.m_refData)->m_color);
    if (own->red != other->red) return FALSE;
    if (own->blue != other->blue) return FALSE;
    if (own->green != other->green) return FALSE;

    return TRUE;
}

wxObjectRefData *wxColour::CreateRefData() const
{
    return new wxColourRefData;
}

wxObjectRefData *wxColour::CloneRefData(const wxObjectRefData *data) const
{
    return new wxColourRefData(*(wxColourRefData *)data);
}

void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
{
    AllocExclusive();

    m_refData = new wxColourRefData();
#if wxUSE_NANOX
    M_COLDATA->m_color.red = ((unsigned short)red) ;
    M_COLDATA->m_color.green = ((unsigned short)green) ;
    M_COLDATA->m_color.blue = ((unsigned short)blue) ;
#else
    M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
    M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
    M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
#endif
    M_COLDATA->m_color.pixel = 0;
}

unsigned char wxColour::Red() const
{
    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );

#if wxUSE_NANOX
    return (unsigned char) M_COLDATA->m_color.red ;
#else
    return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
#endif
}

unsigned char wxColour::Green() const
{
    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );

#if wxUSE_NANOX
    return (unsigned char) M_COLDATA->m_color.green ;
#else
    return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
#endif
}

unsigned char wxColour::Blue() const
{
    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );

#if wxUSE_NANOX
    return (unsigned char) M_COLDATA->m_color.blue ;
#else
    return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
#endif
}

void wxColour::CalcPixel( WXColormap cmap )
{
    wxCHECK_RET( Ok(), wxT("invalid colour") );

    wxCHECK_RET( cmap, wxT("invalid colormap") );

    M_COLDATA->AllocColour( cmap );
}

unsigned long wxColour::GetPixel() const
{
    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );

    return M_COLDATA->m_color.pixel;
}

WXColor *wxColour::GetColor() const
{
    wxCHECK_MSG( Ok(), (WXColor *) NULL, wxT("invalid colour") );

    return (WXColor*) &M_COLDATA->m_color;
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: colour.cpp
	3	// Purpose: wxColour class
	4	// Author: Julian Smart, Robert Roebling
	5	// Modified by:
	6	// Created: 17/09/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart, Robert Roebling
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12
	13	#ifdef __GNUG__
	14	#pragma implementation "colour.h"
	15	#endif
	16
	17	#include "wx/gdicmn.h"
	18	#include "wx/app.h"
	19
	20	#include "wx/x11/private.h"
	21
	22	//-----------------------------------------------------------------------------
	23	// wxColour
	24	//-----------------------------------------------------------------------------
	25
	26	class wxColourRefData: public wxObjectRefData
	27	{
	28	public:
	29	wxColourRefData()
	30	{
	31	m_color.red = 0;
	32	m_color.green = 0;
	33	m_color.blue = 0;
	34	m_color.pixel = 0;
	35	m_colormap = (WXColormap *) NULL;
	36	m_hasPixel = FALSE;
	37	}
	38
	39	~wxColourRefData()
	40	{
	41	FreeColour();
	42	}
	43
	44	bool operator == (const wxColourRefData& data) const
	45	{
	46	return (m_colormap == data.m_colormap &&
	47	m_hasPixel == data.m_hasPixel &&
	48	m_color.red == data.m_color.red &&
	49	m_color.green == data.m_color.green &&
	50	m_color.blue == data.m_color.blue &&
	51	m_color.pixel == data.m_color.pixel);
	52	}
	53
	54	void FreeColour();
	55	void AllocColour( WXColormap cmap );
	56
	57	XColor m_color;
	58	WXColormap m_colormap;
	59	bool m_hasPixel;
	60
	61	friend class wxColour;
	62
	63	// reference counter for systems with <= 8-Bit display
	64	static unsigned short colMapAllocCounter[ 256 ];
	65	};
	66
	67	unsigned short wxColourRefData::colMapAllocCounter[ 256 ] =
	68	{
	69	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	70	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	71	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	72	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	73	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	74	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	75	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	76	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	77	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	78	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	79	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	80	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	81	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	82	};
	83
	84	void wxColourRefData::FreeColour()
	85	{
	86	#if 0
	87	if (m_colormap)
	88	{
	89	Colormap cm = (Colormap)m_colormap;
	90
	91	GdkColormapPrivate private_colormap = (GdkColormapPrivate) m_colormap;
	92	if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	93	(private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	94	{
	95	int idx = m_color.pixel;
	96	colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
	97
	98	if (colMapAllocCounter[ idx ] == 0)
	99	gdk_colormap_free_colors( m_colormap, &m_color, 1 );
	100	}
	101	}
	102	#endif
	103	}
	104
	105	void wxColourRefData::AllocColour( WXColormap cmap )
	106	{
	107	if (m_hasPixel && (m_colormap == cmap))
	108	return;
	109
	110	FreeColour();
	111
	112	#if 0
	113	GdkColormapPrivate private_colormap = (GdkColormapPrivate) cmap;
	114	if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	115	(private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	116	{
	117	m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
	118	int idx = m_color.pixel;
	119	colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
	120	}
	121	else
	122	#endif
	123	{
	124	m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
	125	}
	126	m_colormap = cmap;
	127	}
	128
	129	//-----------------------------------------------------------------------------
	130
	131	#define M_COLDATA ((wxColourRefData *)m_refData)
	132
	133	#define SHIFT (8*(sizeof(short int)-sizeof(char)))
	134
	135	IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
	136
	137	wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
	138	{
	139	m_refData = new wxColourRefData();
	140	#if wxUSE_NANOX
	141	M_COLDATA->m_color.red = ((unsigned short)red) ;
	142	M_COLDATA->m_color.green = ((unsigned short)green) ;
	143	M_COLDATA->m_color.blue = ((unsigned short)blue) ;
	144	#else
	145	M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
	146	M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
	147	M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
	148	#endif
	149	M_COLDATA->m_color.pixel = 0;
	150	}
	151
	152	void wxColour::InitFromName( const wxString &colourName )
	153	{
	154	wxNode node = (wxNode ) NULL;
	155	if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
	156	{
	157	wxColour col = (wxColour)node->Data();
	158	UnRef();
	159	if (col) Ref( *col );
	160	}
	161	else
	162	{
	163	m_refData = new wxColourRefData();
	164
	165	M_COLDATA->m_colormap = wxTheApp->GetMainColormap( wxGlobalDisplay() );
	166
	167	if (!XParseColor( wxGlobalDisplay(), (Colormap) M_COLDATA->m_colormap, colourName.mb_str(), &M_COLDATA->m_color ))
	168	{
	169	// VZ: asserts are good in general but this one is triggered by
	170	// calling wxColourDatabase::FindColour() with an
	171	// unrecognized colour name and this can't be avoided from the
	172	// user code, so don't give it here
	173	//
	174	// a better solution would be to changed code in FindColour()
	175
	176	//wxFAIL_MSG( wxT("wxColour: couldn't find colour") );
	177
	178	delete m_refData;
	179	m_refData = (wxObjectRefData *) NULL;
	180	}
	181	}
	182	}
	183
	184	wxColour::~wxColour()
	185	{
	186	}
	187
	188	bool wxColour::operator == ( const wxColour& col ) const
	189	{
	190	if (m_refData == col.m_refData) return TRUE;
	191
	192	if (!m_refData \|\| !col.m_refData) return FALSE;
	193
	194	XColor own = &(((wxColourRefData)m_refData)->m_color);
	195	XColor other = &(((wxColourRefData)col.m_refData)->m_color);
	196	if (own->red != other->red) return FALSE;
	197	if (own->blue != other->blue) return FALSE;
	198	if (own->green != other->green) return FALSE;
	199
	200	return TRUE;
	201	}
	202
	203	wxObjectRefData *wxColour::CreateRefData() const
	204	{
	205	return new wxColourRefData;
	206	}
	207
	208	wxObjectRefData wxColour::CloneRefData(const wxObjectRefData data) const
	209	{
	210	return new wxColourRefData((wxColourRefData )data);
	211	}
	212
	213	void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
	214	{
	215	AllocExclusive();
	216
	217	m_refData = new wxColourRefData();
	218	#if wxUSE_NANOX
	219	M_COLDATA->m_color.red = ((unsigned short)red) ;
	220	M_COLDATA->m_color.green = ((unsigned short)green) ;
	221	M_COLDATA->m_color.blue = ((unsigned short)blue) ;
	222	#else
	223	M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
	224	M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
	225	M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
	226	#endif
	227	M_COLDATA->m_color.pixel = 0;
	228	}
	229
	230	unsigned char wxColour::Red() const
	231	{
	232	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	233
	234	#if wxUSE_NANOX
	235	return (unsigned char) M_COLDATA->m_color.red ;
	236	#else
	237	return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
	238	#endif
	239	}
	240
	241	unsigned char wxColour::Green() const
	242	{
	243	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	244
	245	#if wxUSE_NANOX
	246	return (unsigned char) M_COLDATA->m_color.green ;
	247	#else
	248	return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
	249	#endif
	250	}
	251
	252	unsigned char wxColour::Blue() const
	253	{
	254	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	255
	256	#if wxUSE_NANOX
	257	return (unsigned char) M_COLDATA->m_color.blue ;
	258	#else
	259	return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
	260	#endif
	261	}
	262
	263	void wxColour::CalcPixel( WXColormap cmap )
	264	{
	265	wxCHECK_RET( Ok(), wxT("invalid colour") );
	266
	267	wxCHECK_RET( cmap, wxT("invalid colormap") );
	268
	269	M_COLDATA->AllocColour( cmap );
	270	}
	271
	272	unsigned long wxColour::GetPixel() const
	273	{
	274	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	275
	276	return M_COLDATA->m_color.pixel;
	277	}
	278
	279	WXColor *wxColour::GetColor() const
	280	{
	281	wxCHECK_MSG( Ok(), (WXColor *) NULL, wxT("invalid colour") );
	282
	283	return (WXColor*) &M_COLDATA->m_color;
	284	}