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[ATL][ATL_APITEST] Implement CImageDC class (#5643)

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- Use reference count for CImage::GetDC / CImage::ReleaseDC.
- Add CImageDC class.
- Delete modules/rostests/apitests/atl/CImage_WIP.txt.
CORE-19008
This commit is contained in:
Katayama Hirofumi MZ 2023-09-05 09:03:32 +09:00 • committed by GitHub
parent d55e33d0f3
commit b68a3f329c
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3 changed files with 70 additions and 101 deletions
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65
sdk/lib/atl/atlimage.h
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@ -6,12 +6,6 @@
#ifndef __ATLIMAGE_H__
#define __ATLIMAGE_H__
// !!!!
// TODO: The backend (gdi+) that this class relies on is not yet complete!
// Before that is finished, this class will not be a perfect replacement.
// See rostest/apitests/atl/CImage_WIP.txt for test results.
// !!!!
#pragma once
#include <atlcore.h> // for ATL Core
@ -93,28 +87,41 @@ public:
HDC GetDC() const throw()
{
if (m_hDC)
return m_hDC;
ATLASSERT(m_nDCRefCount >= 0);
if (::InterlockedIncrement(&m_nDCRefCount) == 1)
{
ATLASSERT(m_hDC == NULL);
ATLASSERT(m_hOldBitmap == NULL);
m_hDC = ::CreateCompatibleDC(NULL);
ATLASSERT(m_hDC != NULL);
m_hOldBitmap = (HBITMAP)::SelectObject(m_hDC, m_hBitmap);
ATLASSERT(m_hOldBitmap != NULL);
}
m_hDC = ::CreateCompatibleDC(NULL);
m_hOldBitmap = (HBITMAP)::SelectObject(m_hDC, m_hBitmap);
return m_hDC;
}
void ReleaseDC() const throw()
{
ATLASSERT(m_hDC);
ATLASSERT(m_nDCRefCount > 0);
if (m_hDC == NULL)
if (::InterlockedDecrement(&m_nDCRefCount) != 0)
return;
if (m_hOldBitmap)
{
ATLASSERT(m_hDC != NULL);
::SelectObject(m_hDC, m_hOldBitmap);
m_hOldBitmap = NULL;
}
::DeleteDC(m_hDC);
m_hDC = NULL;
if (m_hDC)
{
::DeleteDC(m_hDC);
m_hDC = NULL;
}
}
BOOL AlphaBlend(HDC hDestDC,
@ -1016,6 +1023,7 @@ private:
HBITMAP m_hBitmap;
mutable HBITMAP m_hOldBitmap;
mutable HDC m_hDC;
mutable LONG m_nDCRefCount = 0;
DIBOrientation m_eOrientation;
bool m_bHasAlphaChannel;
bool m_bIsDIBSection;
@ -1213,7 +1221,34 @@ private:
DECLSPEC_SELECTANY CImage::CInitGDIPlus CImage::s_gdiplus;
}
class CImageDC
{
private:
const CImage& m_image;
HDC m_hDC;
public:
CImageDC(const CImage& image)
: m_image(image)
, m_hDC(image.GetDC())
{
}
virtual ~CImageDC() throw()
{
m_image.ReleaseDC();
}
operator HDC() const throw()
{
return m_hDC;
}
CImageDC(const CImageDC&) = delete;
CImageDC& operator=(const CImageDC&) = delete;
};
} // namespace ATL
#endif