d84afea9d1
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15412 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
270 lines
7.5 KiB
C++
270 lines
7.5 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: colour.cpp
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// Purpose:
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// Author: Robert Roebling
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// Id: $Id$
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// Copyright: (c) 1998 Robert Roebling
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "colour.h"
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#endif
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#include "wx/gdicmn.h"
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#include <gdk/gdk.h>
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#include <gdk/gdkx.h>
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#include <gdk/gdkprivate.h>
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//-----------------------------------------------------------------------------
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// wxColour
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//-----------------------------------------------------------------------------
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class wxColourRefData: public wxObjectRefData
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{
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public:
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wxColourRefData()
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{
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m_color.red = 0;
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m_color.green = 0;
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m_color.blue = 0;
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m_color.pixel = 0;
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m_colormap = (GdkColormap *) NULL;
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m_hasPixel = FALSE;
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}
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wxColourRefData(const wxColourRefData& data)
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: wxObjectRefData()
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{
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m_color = data.m_color;
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m_colormap = data.m_colormap;
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m_hasPixel = data.m_hasPixel;
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}
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~wxColourRefData()
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{
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FreeColour();
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}
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bool operator == (const wxColourRefData& data) const
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{
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return (m_colormap == data.m_colormap &&
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m_hasPixel == data.m_hasPixel &&
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m_color.red == data.m_color.red &&
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m_color.green == data.m_color.green &&
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m_color.blue == data.m_color.blue &&
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m_color.pixel == data.m_color.pixel);
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}
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void FreeColour();
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void AllocColour( GdkColormap* cmap );
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GdkColor m_color;
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GdkColormap *m_colormap;
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bool m_hasPixel;
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friend class wxColour;
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// reference counter for systems with <= 8-Bit display
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static gushort colMapAllocCounter[ 256 ];
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};
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gushort wxColourRefData::colMapAllocCounter[ 256 ] =
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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void wxColourRefData::FreeColour()
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{
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if (m_colormap)
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{
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#ifdef __WXGTK20__
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if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
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(m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
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#else
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GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap;
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if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
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(private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
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#endif
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{
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int idx = m_color.pixel;
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colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
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if (colMapAllocCounter[ idx ] == 0)
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gdk_colormap_free_colors( m_colormap, &m_color, 1 );
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}
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}
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}
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void wxColourRefData::AllocColour( GdkColormap *cmap )
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{
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if (m_hasPixel && (m_colormap == cmap))
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return;
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FreeColour();
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#ifdef __WXGTK20__
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if ( (cmap->visual->type == GDK_VISUAL_GRAYSCALE) ||
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(cmap->visual->type == GDK_VISUAL_PSEUDO_COLOR) )
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#else
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GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap;
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if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
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(private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
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#endif
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{
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m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
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int idx = m_color.pixel;
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colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
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}
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else
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{
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m_hasPixel = gdk_color_alloc( cmap, &m_color );
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}
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m_colormap = cmap;
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}
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//-----------------------------------------------------------------------------
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#define M_COLDATA ((wxColourRefData *)m_refData)
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#define SHIFT (8*(sizeof(short int)-sizeof(char)))
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IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
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wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
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{
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m_refData = new wxColourRefData();
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M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
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M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
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M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
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M_COLDATA->m_color.pixel = 0;
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}
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void wxColour::InitFromName( const wxString &colourName )
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{
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wxNode *node = (wxNode *) NULL;
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if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
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{
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wxColour *col = (wxColour*)node->Data();
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UnRef();
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if (col) Ref( *col );
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}
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else
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{
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m_refData = new wxColourRefData();
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if (!gdk_color_parse( colourName.mb_str(), &M_COLDATA->m_color ))
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{
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// VZ: asserts are good in general but this one is triggered by
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// calling wxColourDatabase::FindColour() with an
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// unrecognized colour name and this can't be avoided from the
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// user code, so don't give it here
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//
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// a better solution would be to changed code in FindColour()
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//wxFAIL_MSG( wxT("wxColour: couldn't find colour") );
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delete m_refData;
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m_refData = (wxObjectRefData *) NULL;
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}
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}
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}
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wxColour::~wxColour()
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{
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}
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bool wxColour::operator == ( const wxColour& col ) const
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{
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if (m_refData == col.m_refData) return TRUE;
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if (!m_refData || !col.m_refData) return FALSE;
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GdkColor *own = &(((wxColourRefData*)m_refData)->m_color);
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GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color);
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if (own->red != other->red) return FALSE;
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if (own->blue != other->blue) return FALSE;
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if (own->green != other->green) return FALSE;
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return TRUE;
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}
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wxObjectRefData *wxColour::CreateRefData() const
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{
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return new wxColourRefData;
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}
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wxObjectRefData *wxColour::CloneRefData(const wxObjectRefData *data) const
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{
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return new wxColourRefData(*(wxColourRefData *)data);
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}
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void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
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{
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AllocExclusive();
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m_refData = new wxColourRefData();
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M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
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M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
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M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
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M_COLDATA->m_color.pixel = 0;
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}
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unsigned char wxColour::Red() const
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{
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wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
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return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
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}
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unsigned char wxColour::Green() const
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{
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wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
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return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
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}
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unsigned char wxColour::Blue() const
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{
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wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
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return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
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}
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void wxColour::CalcPixel( GdkColormap *cmap )
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{
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if (!Ok()) return;
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M_COLDATA->AllocColour( cmap );
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}
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int wxColour::GetPixel() const
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{
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wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
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return M_COLDATA->m_color.pixel;
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}
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GdkColor *wxColour::GetColor() const
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{
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wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") );
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return &M_COLDATA->m_color;
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}
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