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(const wxColourRefData& data):
        wxObjectRefData()
    {
        m_color = data.m_color;
        m_colormap = data.m_colormap;
        m_hasPixel = data.m_hasPixel;
    }

    ~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 (!m_colormap)
        return;
#if !wxUSE_NANOX
    if ((wxTheApp->m_visualType == GrayScale) ||
        (wxTheApp->m_visualType == PseudoColor))
    {
        int idx = m_color.pixel;
        colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;

        if (colMapAllocCounter[ idx ] == 0)
        {
            unsigned long pixel = m_color.pixel;
            XFreeColors( wxGlobalDisplay(), (Colormap) m_colormap, &pixel, 1, 0 );
        }
    }
#endif
}

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

    FreeColour();

#if !wxUSE_NANOX
    if ((wxTheApp->m_visualType == GrayScale) ||
        (wxTheApp->m_visualType == PseudoColor))
    {
        m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
        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	wxColourRefData(const wxColourRefData& data):
	39	wxObjectRefData()
	40	{
	41	m_color = data.m_color;
	42	m_colormap = data.m_colormap;
	43	m_hasPixel = data.m_hasPixel;
	44	}
	45
	46	~wxColourRefData()
	47	{
	48	FreeColour();
	49	}
	50
	51	bool operator == (const wxColourRefData& data) const
	52	{
	53	return (m_colormap == data.m_colormap &&
	54	m_hasPixel == data.m_hasPixel &&
	55	m_color.red == data.m_color.red &&
	56	m_color.green == data.m_color.green &&
	57	m_color.blue == data.m_color.blue &&
	58	m_color.pixel == data.m_color.pixel);
	59	}
	60
	61	void FreeColour();
	62	void AllocColour( WXColormap cmap );
	63
	64	XColor m_color;
	65	WXColormap m_colormap;
	66	bool m_hasPixel;
	67
	68	friend class wxColour;
	69
	70	// reference counter for systems with <= 8-Bit display
	71	static unsigned short colMapAllocCounter[ 256 ];
	72	};
	73
	74	unsigned short wxColourRefData::colMapAllocCounter[ 256 ] =
	75	{
	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, 0, 0, 0, 0,
	82	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	83	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	84	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	85	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	86	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	87	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	88	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	89	};
	90
	91	void wxColourRefData::FreeColour()
	92	{
	93	if (!m_colormap)
	94	return;
	95	#if !wxUSE_NANOX
	96	if ((wxTheApp->m_visualType == GrayScale) \|\|
	97	(wxTheApp->m_visualType == PseudoColor))
	98	{
	99	int idx = m_color.pixel;
	100	colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
	101
	102	if (colMapAllocCounter[ idx ] == 0)
	103	{
	104	unsigned long pixel = m_color.pixel;
	105	XFreeColors( wxGlobalDisplay(), (Colormap) m_colormap, &pixel, 1, 0 );
	106	}
	107	}
	108	#endif
	109	}
	110
	111	void wxColourRefData::AllocColour( WXColormap cmap )
	112	{
	113	if (m_hasPixel && (m_colormap == cmap))
	114	return;
	115
	116	FreeColour();
	117
	118	#if !wxUSE_NANOX
	119	if ((wxTheApp->m_visualType == GrayScale) \|\|
	120	(wxTheApp->m_visualType == PseudoColor))
	121	{
	122	m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
	123	int idx = m_color.pixel;
	124	colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
	125	}
	126	else
	127	#endif
	128	{
	129	m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
	130	}
	131
	132	m_colormap = cmap;
	133	}
	134
	135	//-----------------------------------------------------------------------------
	136
	137	#define M_COLDATA ((wxColourRefData *)m_refData)
	138
	139	#define SHIFT (8*(sizeof(short int)-sizeof(char)))
	140
	141	IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
	142
	143	wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
	144	{
	145	m_refData = new wxColourRefData();
	146	#if wxUSE_NANOX
	147	M_COLDATA->m_color.red = ((unsigned short)red) ;
	148	M_COLDATA->m_color.green = ((unsigned short)green) ;
	149	M_COLDATA->m_color.blue = ((unsigned short)blue) ;
	150	#else
	151	M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
	152	M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
	153	M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
	154	#endif
	155	M_COLDATA->m_color.pixel = 0;
	156	}
	157
	158	void wxColour::InitFromName( const wxString &colourName )
	159	{
	160	wxNode node = (wxNode ) NULL;
	161	if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
	162	{
	163	wxColour col = (wxColour)node->Data();
	164	UnRef();
	165	if (col) Ref( *col );
	166	}
	167	else
	168	{
	169	m_refData = new wxColourRefData();
	170
	171	M_COLDATA->m_colormap = wxTheApp->GetMainColormap( wxGlobalDisplay() );
	172
	173	if (!XParseColor( wxGlobalDisplay(), (Colormap) M_COLDATA->m_colormap, colourName.mb_str(), &M_COLDATA->m_color ))
	174	{
	175	// VZ: asserts are good in general but this one is triggered by
	176	// calling wxColourDatabase::FindColour() with an
	177	// unrecognized colour name and this can't be avoided from the
	178	// user code, so don't give it here
	179	//
	180	// a better solution would be to changed code in FindColour()
	181
	182	//wxFAIL_MSG( wxT("wxColour: couldn't find colour") );
	183
	184	delete m_refData;
	185	m_refData = (wxObjectRefData *) NULL;
	186	}
	187	}
	188	}
	189
	190	wxColour::~wxColour()
	191	{
	192	}
	193
	194	bool wxColour::operator == ( const wxColour& col ) const
	195	{
	196	if (m_refData == col.m_refData) return TRUE;
	197
	198	if (!m_refData \|\| !col.m_refData) return FALSE;
	199
	200	XColor own = &(((wxColourRefData)m_refData)->m_color);
	201	XColor other = &(((wxColourRefData)col.m_refData)->m_color);
	202	if (own->red != other->red) return FALSE;
	203	if (own->blue != other->blue) return FALSE;
	204	if (own->green != other->green) return FALSE;
	205
	206	return TRUE;
	207	}
	208
	209	wxObjectRefData *wxColour::CreateRefData() const
	210	{
	211	return new wxColourRefData;
	212	}
	213
	214	wxObjectRefData wxColour::CloneRefData(const wxObjectRefData data) const
	215	{
	216	return new wxColourRefData((wxColourRefData )data);
	217	}
	218
	219	void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
	220	{
	221	AllocExclusive();
	222
	223	m_refData = new wxColourRefData();
	224	#if wxUSE_NANOX
	225	M_COLDATA->m_color.red = ((unsigned short)red) ;
	226	M_COLDATA->m_color.green = ((unsigned short)green) ;
	227	M_COLDATA->m_color.blue = ((unsigned short)blue) ;
	228	#else
	229	M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
	230	M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
	231	M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
	232	#endif
	233	M_COLDATA->m_color.pixel = 0;
	234	}
	235
	236	unsigned char wxColour::Red() const
	237	{
	238	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	239
	240	#if wxUSE_NANOX
	241	return (unsigned char) M_COLDATA->m_color.red ;
	242	#else
	243	return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
	244	#endif
	245	}
	246
	247	unsigned char wxColour::Green() const
	248	{
	249	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	250
	251	#if wxUSE_NANOX
	252	return (unsigned char) M_COLDATA->m_color.green ;
	253	#else
	254	return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
	255	#endif
	256	}
	257
	258	unsigned char wxColour::Blue() const
	259	{
	260	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	261
	262	#if wxUSE_NANOX
	263	return (unsigned char) M_COLDATA->m_color.blue ;
	264	#else
	265	return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
	266	#endif
	267	}
	268
	269	void wxColour::CalcPixel( WXColormap cmap )
	270	{
	271	wxCHECK_RET( Ok(), wxT("invalid colour") );
	272
	273	wxCHECK_RET( cmap, wxT("invalid colormap") );
	274
	275	M_COLDATA->AllocColour( cmap );
	276	}
	277
	278	unsigned long wxColour::GetPixel() const
	279	{
	280	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	281
	282	return M_COLDATA->m_color.pixel;
	283	}
	284
	285	WXColor *wxColour::GetColor() const
	286	{
	287	wxCHECK_MSG( Ok(), (WXColor *) NULL, wxT("invalid colour") );
	288
	289	return (WXColor*) &M_COLDATA->m_color;
	290	}