// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1998 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

#include "stdafx.h"
#include "globals.h"

/////////////////////////////////////////////////////////////////////////////
// Cached system metrics, etc

GLOBAL_DATA globalData;

// Initialization code
GLOBAL_DATA::GLOBAL_DATA()
{
	// Cache various target platform version information
	DWORD dwVersion = ::GetVersion();
	nWinVer = (LOBYTE(dwVersion) << 8) + HIBYTE(dwVersion);
	bWin32s = (dwVersion & 0x80000000) != 0;
	bWin4 = (BYTE)dwVersion >= 4;
	bNotWin4 = 1 - bWin4;   // for convenience
	bSmCaption = bWin4;
	bWin31 = bWin32s && !bWin4; // Windows 95 reports Win32s

	// Cached system metrics (updated in CWnd::OnWinIniChange)
	UpdateSysMetrics();

	// Border attributes
	hbrLtGray = ::CreateSolidBrush(RGB(192, 192, 192));
	hbrDkGray = ::CreateSolidBrush(RGB(128, 128, 128));
	ASSERT(hbrLtGray != NULL);
	ASSERT(hbrDkGray != NULL);

	// Cached system values (updated in CWnd::OnSysColorChange)
	hbrBtnFace = NULL;
	hbrBtnShadow = NULL;
	hbrBtnHilite = NULL;
	hbrWindowFrame = NULL;
	hpenBtnShadow = NULL;
	hpenBtnHilite = NULL;
	hpenBtnText = NULL;
	UpdateSysColors();

	// cxBorder2 and cyBorder are 2x borders for Win4
	cxBorder2 = bWin4 ? CX_BORDER*2 : CX_BORDER;
	cyBorder2 = bWin4 ? CY_BORDER*2 : CY_BORDER;

	// allocated on demand
	hStatusFont = NULL;
	hToolTipsFont = NULL;
}

// Termination code
GLOBAL_DATA::~GLOBAL_DATA()
{
	// cleanup standard brushes
	AfxDeleteObject((HGDIOBJ*)&hbrLtGray);
	AfxDeleteObject((HGDIOBJ*)&hbrDkGray);
	AfxDeleteObject((HGDIOBJ*)&hbrBtnFace);
	AfxDeleteObject((HGDIOBJ*)&hbrBtnShadow);
	AfxDeleteObject((HGDIOBJ*)&hbrBtnHilite);
	AfxDeleteObject((HGDIOBJ*)&hbrWindowFrame);

	// cleanup standard pens
	AfxDeleteObject((HGDIOBJ*)&hpenBtnShadow);
	AfxDeleteObject((HGDIOBJ*)&hpenBtnHilite);
	AfxDeleteObject((HGDIOBJ*)&hpenBtnText);

	// clean up objects we don't actually create
	AfxDeleteObject((HGDIOBJ*)&hStatusFont);
	AfxDeleteObject((HGDIOBJ*)&hToolTipsFont);
}

void GLOBAL_DATA::UpdateSysColors()
{
	clrBtnFace = ::GetSysColor(COLOR_BTNFACE);
	clrBtnShadow = ::GetSysColor(COLOR_BTNSHADOW);
	clrBtnHilite = ::GetSysColor(COLOR_BTNHIGHLIGHT);
	clrBtnText = ::GetSysColor(COLOR_BTNTEXT);
	clrWindowFrame = ::GetSysColor(COLOR_WINDOWFRAME);

	AfxDeleteObject((HGDIOBJ*)&hbrBtnFace);
	AfxDeleteObject((HGDIOBJ*)&hbrBtnShadow);
	AfxDeleteObject((HGDIOBJ*)&hbrBtnHilite);
	AfxDeleteObject((HGDIOBJ*)&hbrWindowFrame);

	hbrBtnFace = ::CreateSolidBrush(clrBtnFace);
	ASSERT(hbrBtnFace != NULL);
	hbrBtnShadow = ::CreateSolidBrush(clrBtnShadow);
	ASSERT(hbrBtnShadow != NULL);
	hbrBtnHilite = ::CreateSolidBrush(clrBtnHilite);
	ASSERT(hbrBtnHilite != NULL);
	hbrWindowFrame = ::CreateSolidBrush(clrWindowFrame);
	ASSERT(hbrWindowFrame != NULL);

	AfxDeleteObject((HGDIOBJ*)&hpenBtnShadow);
	AfxDeleteObject((HGDIOBJ*)&hpenBtnHilite);
	AfxDeleteObject((HGDIOBJ*)&hpenBtnText);

	hpenBtnShadow = ::CreatePen(PS_SOLID, 0, clrBtnShadow);
	ASSERT(hpenBtnShadow != NULL);
	hpenBtnHilite = ::CreatePen(PS_SOLID, 0, clrBtnHilite);
	ASSERT(hpenBtnHilite != NULL);
	hpenBtnText = ::CreatePen(PS_SOLID, 0, clrBtnText);
	ASSERT(hpenBtnText != NULL);
}

void GLOBAL_DATA::UpdateSysMetrics()
{
	// Device metrics for screen
	HDC hDCScreen = GetDC(NULL);
	ASSERT(hDCScreen != NULL);
	cxPixelsPerInch = GetDeviceCaps(hDCScreen, LOGPIXELSX);
	cyPixelsPerInch = GetDeviceCaps(hDCScreen, LOGPIXELSY);
	ReleaseDC(NULL, hDCScreen);
}

/////////////////////////////////////////////////////////////////////////////