158 lines
3.7 KiB
C++
158 lines
3.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: src/generic/paletteg.cpp
|
|
// Purpose:
|
|
// Author: Robert Roebling
|
|
// Created: 01/02/97
|
|
// Copyright: (c) 1998 Robert Roebling and Julian Smart
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
// For compilers that support precompilation, includes "wx.h".
|
|
#include "wx/wxprec.h"
|
|
|
|
#if defined(__BORLANDC__)
|
|
#pragma hdrstop
|
|
#endif
|
|
|
|
#if wxUSE_PALETTE
|
|
|
|
#include "wx/palette.h"
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxPalette
|
|
//-----------------------------------------------------------------------------
|
|
|
|
struct wxPaletteEntry
|
|
{
|
|
unsigned char red, green, blue;
|
|
};
|
|
|
|
class wxPaletteRefData : public wxGDIRefData
|
|
{
|
|
public:
|
|
wxPaletteRefData();
|
|
wxPaletteRefData(const wxPaletteRefData& palette);
|
|
virtual ~wxPaletteRefData();
|
|
|
|
int m_count;
|
|
wxPaletteEntry *m_entries;
|
|
};
|
|
|
|
wxPaletteRefData::wxPaletteRefData()
|
|
{
|
|
m_count = 0;
|
|
m_entries = NULL;
|
|
}
|
|
|
|
wxPaletteRefData::wxPaletteRefData(const wxPaletteRefData& palette)
|
|
{
|
|
m_count = palette.m_count;
|
|
m_entries = new wxPaletteEntry[m_count];
|
|
for ( int i = 0; i < m_count; i++ )
|
|
m_entries[i] = palette.m_entries[i];
|
|
}
|
|
|
|
wxPaletteRefData::~wxPaletteRefData()
|
|
{
|
|
delete[] m_entries;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#define M_PALETTEDATA ((wxPaletteRefData *)m_refData)
|
|
|
|
IMPLEMENT_DYNAMIC_CLASS(wxPalette,wxGDIObject)
|
|
|
|
wxPalette::wxPalette()
|
|
{
|
|
m_refData = NULL;
|
|
}
|
|
|
|
wxPalette::wxPalette(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue)
|
|
{
|
|
Create(n, red, green, blue);
|
|
}
|
|
|
|
wxPalette::~wxPalette()
|
|
{
|
|
}
|
|
|
|
int wxPalette::GetColoursCount() const
|
|
{
|
|
if (m_refData)
|
|
return M_PALETTEDATA->m_count;
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool wxPalette::Create(int n,
|
|
const unsigned char *red,
|
|
const unsigned char *green,
|
|
const unsigned char *blue)
|
|
{
|
|
UnRef();
|
|
m_refData = new wxPaletteRefData();
|
|
|
|
M_PALETTEDATA->m_count = n;
|
|
M_PALETTEDATA->m_entries = new wxPaletteEntry[n];
|
|
|
|
wxPaletteEntry *e = M_PALETTEDATA->m_entries;
|
|
for (int i = 0; i < n; i++, e++)
|
|
{
|
|
e->red = red[i];
|
|
e->green = green[i];
|
|
e->blue = blue[i];
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int wxPalette::GetPixel( unsigned char red,
|
|
unsigned char green,
|
|
unsigned char blue ) const
|
|
{
|
|
if (!m_refData) return wxNOT_FOUND;
|
|
|
|
int closest = 0;
|
|
double d,distance = 1000.0; // max. dist is 256
|
|
|
|
wxPaletteEntry *e = M_PALETTEDATA->m_entries;
|
|
for (int i = 0; i < M_PALETTEDATA->m_count; i++, e++)
|
|
{
|
|
if ((d = 0.299 * abs(red - e->red) +
|
|
0.587 * abs(green - e->green) +
|
|
0.114 * abs(blue - e->blue)) < distance) {
|
|
distance = d;
|
|
closest = i;
|
|
}
|
|
}
|
|
return closest;
|
|
}
|
|
|
|
bool wxPalette::GetRGB(int pixel,
|
|
unsigned char *red,
|
|
unsigned char *green,
|
|
unsigned char *blue) const
|
|
{
|
|
if (!m_refData) return false;
|
|
if (pixel >= M_PALETTEDATA->m_count) return false;
|
|
|
|
wxPaletteEntry& p = M_PALETTEDATA->m_entries[pixel];
|
|
if (red) *red = p.red;
|
|
if (green) *green = p.green;
|
|
if (blue) *blue = p.blue;
|
|
return true;
|
|
}
|
|
|
|
wxGDIRefData *wxPalette::CreateGDIRefData() const
|
|
{
|
|
return new wxPaletteRefData;
|
|
}
|
|
|
|
wxGDIRefData *wxPalette::CloneGDIRefData(const wxGDIRefData *data) const
|
|
{
|
|
return new wxPaletteRefData(*static_cast<const wxPaletteRefData *>(data));
|
|
}
|
|
|
|
#endif // wxUSE_PALETTE
|