/**
 * @file XTMemDC.cpp
 *
 * @copyright
 * (c) 1998-2025 Codejock Software, All Rights Reserved.
 *
 * This source file is the property of Codejock Software and must not be
 * redistributed by any means without the explicit written permission of
 * Codejock Software.
 *
 * The use of this source code is governed by the terms and conditions specified
 * in the Toolkit Pro license agreement. Codejock Software grants you, as a
 * single software developer, the limited right to use this software on one
 * computer only.
 *
 * Contact Information:
 * support@codejock.com
 * http://www.codejock.com
 *
 */

#include "stdafx.h"

#include "Common/XTPTypeId.h"
#include "Common/XTPFramework.h"
#include "Common/XTPSystemHelpers.h"
#include "Common/XTPSynchro.h"
#include "Common/XTPApplication.h"
#include "Common/XTPSingleton.h"
#include "Common/XTPGdiObjects.h"
#include "Common/XTPColorManager.h"
#include "Common/XTPDrawHelpers.h"

#include "XTMemDC.h"

#include "Common/Base/Diagnostic/XTPDisableNoisyWarnings.h"

#ifdef _DEBUG
#	undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#	define new DEBUG_NEW
#endif

IMPLEMENT_DYNAMIC(CXTMemDC, CDC)

//===========================================================================
// CXTMemDC class
//===========================================================================

CXTMemDC::CXTMemDC(CDC* pDC, const CRect& rect,
				   CXTPPaintManagerColorGradient crBack /*=GetXtremeColor(COLOR_3DFACE)*/,
				   BOOL bHorz /*=FALSE*/)
{
	_ASSERTE(pDC != NULL);
	m_pDC = pDC;
	if (!m_pDC)
		return;

	// If rect is NULL, use the device context's clip box.
	if (rect.IsRectEmpty())
		m_pDC->GetClipBox(&m_rc);
	else
		m_rc.CopyRect(&rect);

	// Create the memory DC, set Map Mode
	if (CreateCompatibleDC(m_pDC))
	{
		SetMapMode(m_pDC->GetMapMode());

		// Create a bitmap big enough to hold the window's image
		m_bitmap.CreateCompatibleBitmap(m_pDC, m_rc.Width(), m_rc.Height());

		// Select the bitmap into the memory DC
		m_hOldBitmap = (HBITMAP)SelectObject(&m_bitmap)->GetSafeHandle();

		if (crBack != COLORREF_NULL)
		{
			// fill background
			XTPDrawHelpers()->GradientFill(this, CRect(0, 0, m_rc.Width(), m_rc.Height()), crBack,
										   bHorz);
		}

		m_bValid = TRUE;
	}

	// Something bad happened, could be GDI leak, didn't create device context.
	else
	{
		m_bValid	 = FALSE;
		m_hOldBitmap = NULL;
	}
}

CXTMemDC::~CXTMemDC()
{
	if (IsValid())
	{
		// Blt it
		m_pDC->BitBlt(m_rc.left, m_rc.top, m_rc.Width(), m_rc.Height(), this, 0, 0, SRCCOPY);
	}

	// Select the original bitmap back in
	if (m_hOldBitmap != NULL)
	{
		SelectObject(m_hOldBitmap);
		m_bitmap.DeleteObject();
	}

	DeleteDC();
}

CBitmap& CXTMemDC::GetBitmap()
{
	return m_bitmap;
}

void CXTMemDC::Discard()
{
	m_bValid = FALSE;
}

BOOL CXTMemDC::IsValid() const
{
	return m_bValid;
}

void CXTMemDC::FromDC()
{
	BitBlt(0, 0, m_rc.Width(), m_rc.Height(), m_pDC, m_rc.left, m_rc.top, SRCCOPY);
}