pcsx2/3rdparty/wxwidgets3.0/include/wx/msw/private/dc.h

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///////////////////////////////////////////////////////////////////////////////
// Name: wx/msw/private/dc.h
// Purpose: private wxMSW helpers for working with HDCs
// Author: Vadim Zeitlin
// Created: 2009-06-16 (extracted from src/msw/dc.cpp)
// Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _MSW_PRIVATE_DC_H_
#define _MSW_PRIVATE_DC_H_
#include "wx/msw/dc.h"
#include "wx/msw/wrapwin.h"
namespace wxMSWImpl
{
// various classes to change some DC property temporarily
// text background and foreground colours
class wxTextColoursChanger
{
public:
wxTextColoursChanger(HDC hdc, const wxMSWDCImpl& dc)
: m_hdc(hdc)
{
Change(dc.GetTextForeground(), dc.GetTextBackground());
}
wxTextColoursChanger(HDC hdc, const wxColour& colFg, const wxColour& colBg)
: m_hdc(hdc)
{
Change(colFg, colBg);
}
wxTextColoursChanger(HDC hdc, COLORREF colFg, COLORREF colBg)
: m_hdc(hdc)
{
Change(colFg, colBg);
}
~wxTextColoursChanger()
{
if ( m_oldColFg != CLR_INVALID )
::SetTextColor(m_hdc, m_oldColFg);
if ( m_oldColBg != CLR_INVALID )
::SetBkColor(m_hdc, m_oldColBg);
}
protected:
// this ctor doesn't change mode immediately, call Change() later to do it
// only if needed
wxTextColoursChanger(HDC hdc)
: m_hdc(hdc)
{
m_oldColFg =
m_oldColBg = CLR_INVALID;
}
void Change(const wxColour& colFg, const wxColour& colBg)
{
Change(colFg.IsOk() ? colFg.GetPixel() : CLR_INVALID,
colBg.IsOk() ? colBg.GetPixel() : CLR_INVALID);
}
void Change(COLORREF colFg, COLORREF colBg)
{
if ( colFg != CLR_INVALID )
{
m_oldColFg = ::SetTextColor(m_hdc, colFg);
if ( m_oldColFg == CLR_INVALID )
{
wxLogLastError(wxT("SetTextColor"));
}
}
else
{
m_oldColFg = CLR_INVALID;
}
if ( colBg != CLR_INVALID )
{
m_oldColBg = ::SetBkColor(m_hdc, colBg);
if ( m_oldColBg == CLR_INVALID )
{
wxLogLastError(wxT("SetBkColor"));
}
}
else
{
m_oldColBg = CLR_INVALID;
}
}
private:
const HDC m_hdc;
COLORREF m_oldColFg,
m_oldColBg;
wxDECLARE_NO_COPY_CLASS(wxTextColoursChanger);
};
// background mode
class wxBkModeChanger
{
public:
// set background mode to opaque if mode != wxBRUSHSTYLE_TRANSPARENT
wxBkModeChanger(HDC hdc, int mode)
: m_hdc(hdc)
{
Change(mode);
}
~wxBkModeChanger()
{
if ( m_oldMode )
::SetBkMode(m_hdc, m_oldMode);
}
protected:
// this ctor doesn't change mode immediately, call Change() later to do it
// only if needed
wxBkModeChanger(HDC hdc) : m_hdc(hdc) { m_oldMode = 0; }
void Change(int mode)
{
m_oldMode = ::SetBkMode(m_hdc, mode == wxBRUSHSTYLE_TRANSPARENT
? TRANSPARENT
: OPAQUE);
if ( !m_oldMode )
{
wxLogLastError(wxT("SetBkMode"));
}
}
private:
const HDC m_hdc;
int m_oldMode;
wxDECLARE_NO_COPY_CLASS(wxBkModeChanger);
};
} // namespace wxMSWImpl
#endif // _MSW_PRIVATE_DC_H_