src/gtk/colour.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        colour.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////


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

#include "wx/gdicmn.h"

#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <gdk/gdkprivate.h>

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

class wxColourRefData: public wxObjectRefData
{
public:
    wxColourRefData();
    ~wxColourRefData();

    void FreeColour();
    void AllocColour( GdkColormap* cmap );

public:
    GdkColor     m_color;
    GdkColormap *m_colormap;
    bool         m_hasPixel;

    friend class wxColour;

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

gushort 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
};

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

wxColourRefData::~wxColourRefData()
{
    FreeColour();
}

void wxColourRefData::FreeColour()
{
    if (m_colormap)
    {
#ifdef __WXGTK20__
        if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
            (m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
#else
        GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap;
        if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
            (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
#endif
        {
            int idx = m_color.pixel;
            colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;

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

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

    FreeColour();

#ifdef __WXGTK20__
    if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
	(m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
#else
    GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap;
    if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
        (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
#endif
    {
        m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
        int idx = m_color.pixel;
        colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
    }
    else
    {
        m_hasPixel = gdk_color_alloc( 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()
{
}

wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
{
    m_refData = new wxColourRefData();
    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;
    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();
        if (!gdk_color_parse( 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( const wxColour& col )
{
    Ref( col );
}

wxColour::~wxColour()
{
}

wxColour& wxColour::operator = ( const wxColour& col )
{
    if (*this == col) return (*this);
    Ref( col );
    return *this;
}

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

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

    GdkColor *own = &(((wxColourRefData*)m_refData)->m_color);
    GdkColor *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;
}

bool wxColour::operator != ( const wxColour& col) const
{
    return !(*this == col);
}

void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
{
    UnRef();
    m_refData = new wxColourRefData();
    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;
    M_COLDATA->m_color.pixel = 0;
}

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

    return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
}

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

    return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
}

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

    return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
}

bool wxColour::Ok() const
{
    return (m_refData != NULL);
}

void wxColour::CalcPixel( GdkColormap *cmap )
{
    if (!Ok()) return;

    M_COLDATA->AllocColour( cmap );
}

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

    return M_COLDATA->m_color.pixel;
}

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

    return &M_COLDATA->m_color;
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: colour.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10
	11	#ifdef __GNUG__
	12	#pragma implementation "colour.h"
	13	#endif
	14
	15	#include "wx/gdicmn.h"
	16
	17	#include <gdk/gdk.h>
	18	#include <gdk/gdkx.h>
	19	#include <gdk/gdkprivate.h>
	20
	21	//-----------------------------------------------------------------------------
	22	// wxColour
	23	//-----------------------------------------------------------------------------
	24
	25	class wxColourRefData: public wxObjectRefData
	26	{
	27	public:
	28	wxColourRefData();
	29	~wxColourRefData();
	30
	31	void FreeColour();
	32	void AllocColour( GdkColormap* cmap );
	33
	34	public:
	35	GdkColor m_color;
	36	GdkColormap *m_colormap;
	37	bool m_hasPixel;
	38
	39	friend class wxColour;
	40
	41	// reference counter for systems with <= 8-Bit display
	42	static gushort colMapAllocCounter[ 256 ];
	43	};
	44
	45	gushort wxColourRefData::colMapAllocCounter[ 256 ] =
	46	{
	47	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	48	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	49	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	50	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	51	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	52	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	53	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	54	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	55	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	56	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	57	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	58	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	59	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	60	};
	61
	62	wxColourRefData::wxColourRefData()
	63	{
	64	m_color.red = 0;
	65	m_color.green = 0;
	66	m_color.blue = 0;
	67	m_color.pixel = 0;
	68	m_colormap = (GdkColormap *) NULL;
	69	m_hasPixel = FALSE;
	70	}
	71
	72	wxColourRefData::~wxColourRefData()
	73	{
	74	FreeColour();
	75	}
	76
	77	void wxColourRefData::FreeColour()
	78	{
	79	if (m_colormap)
	80	{
	81	#ifdef __WXGTK20__
	82	if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	83	(m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	84	#else
	85	GdkColormapPrivate private_colormap = (GdkColormapPrivate) m_colormap;
	86	if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	87	(private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	88	#endif
	89	{
	90	int idx = m_color.pixel;
	91	colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
	92
	93	if (colMapAllocCounter[ idx ] == 0)
	94	gdk_colormap_free_colors( m_colormap, &m_color, 1 );
	95	}
	96	}
	97	}
	98
	99	void wxColourRefData::AllocColour( GdkColormap *cmap )
	100	{
	101	if (m_hasPixel && (m_colormap == cmap))
	102	return;
	103
	104	FreeColour();
	105
	106	#ifdef __WXGTK20__
	107	if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	108	(m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	109	#else
	110	GdkColormapPrivate private_colormap = (GdkColormapPrivate) cmap;
	111	if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	112	(private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	113	#endif
	114	{
	115	m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
	116	int idx = m_color.pixel;
	117	colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
	118	}
	119	else
	120	{
	121	m_hasPixel = gdk_color_alloc( cmap, &m_color );
	122	}
	123	m_colormap = cmap;
	124	}
	125
	126	//-----------------------------------------------------------------------------
	127
	128	#define M_COLDATA ((wxColourRefData *)m_refData)
	129
	130	#define SHIFT (8*(sizeof(short int)-sizeof(char)))
	131
	132	IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
	133
	134	wxColour::wxColour()
	135	{
	136	}
	137
	138	wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
	139	{
	140	m_refData = new wxColourRefData();
	141	M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
	142	M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
	143	M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
	144	M_COLDATA->m_color.pixel = 0;
	145	}
	146
	147	void wxColour::InitFromName( const wxString &colourName )
	148	{
	149	wxNode node = (wxNode ) NULL;
	150	if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
	151	{
	152	wxColour col = (wxColour)node->Data();
	153	UnRef();
	154	if (col) Ref( *col );
	155	}
	156	else
	157	{
	158	m_refData = new wxColourRefData();
	159	if (!gdk_color_parse( colourName.mb_str(), &M_COLDATA->m_color ))
	160	{
	161	// VZ: asserts are good in general but this one is triggered by
	162	// calling wxColourDatabase::FindColour() with an
	163	// unrecognized colour name and this can't be avoided from the
	164	// user code, so don't give it here
	165	//
	166	// a better solution would be to changed code in FindColour()
	167
	168	//wxFAIL_MSG( wxT("wxColour: couldn't find colour") );
	169
	170	delete m_refData;
	171	m_refData = (wxObjectRefData *) NULL;
	172	}
	173	}
	174	}
	175
	176	wxColour::wxColour( const wxColour& col )
	177	{
	178	Ref( col );
	179	}
	180
	181	wxColour::~wxColour()
	182	{
	183	}
	184
	185	wxColour& wxColour::operator = ( const wxColour& col )
	186	{
	187	if (this == col) return (this);
	188	Ref( col );
	189	return *this;
	190	}
	191
	192	bool wxColour::operator == ( const wxColour& col ) const
	193	{
	194	if (m_refData == col.m_refData) return TRUE;
	195
	196	if (!m_refData) return FALSE;
	197	if (!col.m_refData) return FALSE;
	198
	199	GdkColor own = &(((wxColourRefData)m_refData)->m_color);
	200	GdkColor other = &(((wxColourRefData)col.m_refData)->m_color);
	201	if (own->red != other->red) return FALSE;
	202	if (own->blue != other->blue) return FALSE;
	203	if (own->green != other->green) return FALSE;
	204
	205	return TRUE;
	206	}
	207
	208	bool wxColour::operator != ( const wxColour& col) const
	209	{
	210	return !(*this == col);
	211	}
	212
	213	void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
	214	{
	215	UnRef();
	216	m_refData = new wxColourRefData();
	217	M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
	218	M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
	219	M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
	220	M_COLDATA->m_color.pixel = 0;
	221	}
	222
	223	unsigned char wxColour::Red() const
	224	{
	225	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	226
	227	return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
	228	}
	229
	230	unsigned char wxColour::Green() const
	231	{
	232	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	233
	234	return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
	235	}
	236
	237	unsigned char wxColour::Blue() const
	238	{
	239	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	240
	241	return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
	242	}
	243
	244	bool wxColour::Ok() const
	245	{
	246	return (m_refData != NULL);
	247	}
	248
	249	void wxColour::CalcPixel( GdkColormap *cmap )
	250	{
	251	if (!Ok()) return;
	252
	253	M_COLDATA->AllocColour( cmap );
	254	}
	255
	256	int wxColour::GetPixel() const
	257	{
	258	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	259
	260	return M_COLDATA->m_color.pixel;
	261	}
	262
	263	GdkColor *wxColour::GetColor() const
	264	{
	265	wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") );
	266
	267	return &M_COLDATA->m_color;
	268	}
	269
	270