55ccdb93e4
1. perform deep comparison for the classes for which it makes sense in the ports where this wasn't done yet 2. remove (shallow) comparison operators for the classes for which it does not make sense (such as wxBitmap) 3. makes wxBitmap use COW on all ports 4. adds wxObject::IsRefTo() 5. centralizes and improves COW docs git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42752 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
146 lines
3.2 KiB
C++
146 lines
3.2 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/generic/paletteg.cpp
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// Purpose:
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// Author: Robert Roebling
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// Created: 01/02/97
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// RCS-ID: $Id$
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// Copyright: (c) 1998 Robert Roebling and Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#if defined(__BORLANDC__)
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#pragma hdrstop
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#endif
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#if wxUSE_PALETTE
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#include "wx/palette.h"
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//-----------------------------------------------------------------------------
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// wxPalette
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//-----------------------------------------------------------------------------
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struct wxPaletteEntry
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{
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unsigned char red, green, blue;
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};
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class wxPaletteRefData: public wxObjectRefData
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{
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public:
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wxPaletteRefData(void);
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virtual ~wxPaletteRefData(void);
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int m_count;
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wxPaletteEntry *m_entries;
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};
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wxPaletteRefData::wxPaletteRefData()
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{
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m_count = 0;
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m_entries = NULL;
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}
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wxPaletteRefData::~wxPaletteRefData()
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{
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delete[] m_entries;
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}
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//-----------------------------------------------------------------------------
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#define M_PALETTEDATA ((wxPaletteRefData *)m_refData)
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IMPLEMENT_DYNAMIC_CLASS(wxPalette,wxGDIObject)
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wxPalette::wxPalette()
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{
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m_refData = NULL;
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}
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wxPalette::wxPalette(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue)
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{
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Create(n, red, green, blue);
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}
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wxPalette::~wxPalette()
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{
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}
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bool wxPalette::IsOk() const
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{
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return (m_refData != NULL);
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}
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int wxPalette::GetColoursCount() const
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{
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if (m_refData)
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return M_PALETTEDATA->m_count;
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return 0;
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}
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bool wxPalette::Create(int n,
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const unsigned char *red,
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const unsigned char *green,
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const unsigned char *blue)
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{
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UnRef();
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m_refData = new wxPaletteRefData();
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M_PALETTEDATA->m_count = n;
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M_PALETTEDATA->m_entries = new wxPaletteEntry[n];
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wxPaletteEntry *e = M_PALETTEDATA->m_entries;
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for (int i = 0; i < n; i++, e++)
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{
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e->red = red[i];
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e->green = green[i];
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e->blue = blue[i];
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}
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return true;
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}
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int wxPalette::GetPixel( unsigned char red,
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unsigned char green,
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unsigned char blue ) const
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{
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if (!m_refData) return wxNOT_FOUND;
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int closest = 0;
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double d,distance = 1000.0; // max. dist is 256
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wxPaletteEntry *e = M_PALETTEDATA->m_entries;
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for (int i = 0; i < M_PALETTEDATA->m_count; i++, e++)
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{
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if ((d = 0.299 * abs(red - e->red) +
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0.587 * abs(green - e->green) +
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0.114 * abs(blue - e->blue)) < distance) {
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distance = d;
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closest = i;
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}
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}
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return closest;
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}
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bool wxPalette::GetRGB(int pixel,
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unsigned char *red,
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unsigned char *green,
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unsigned char *blue) const
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{
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if (!m_refData) return false;
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if (pixel >= M_PALETTEDATA->m_count) return false;
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wxPaletteEntry& p = M_PALETTEDATA->m_entries[pixel];
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if (red) *red = p.red;
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if (green) *green = p.green;
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if (blue) *blue = p.blue;
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return true;
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}
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#endif // wxUSE_PALETTE
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