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#include "stdafx.h"
#include "MPCPngImage.h"
//////////////////////////////////////////////////////////////////////
// CPngImage
CImage* CMPCPngImage::m_pImage;
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CMPCPngImage::CMPCPngImage()
{
}
CMPCPngImage::~CMPCPngImage()
{
}
//////////////////////////////////////////////////////////////////////
// Operations
//////////////////////////////////////////////////////////////////////
BOOL CMPCPngImage::Load(UINT uiResID, HINSTANCE hinstRes)
{
return Load(MAKEINTRESOURCE(uiResID), hinstRes);
}
BOOL CMPCPngImage::Load(LPCTSTR lpszResourceName, HINSTANCE hinstRes)
{
if (hinstRes == nullptr) {
hinstRes = AfxFindResourceHandle(lpszResourceName, _T("PNG"));
}
HRSRC hRsrc = ::FindResource(hinstRes, lpszResourceName, _T("PNG"));
if (hRsrc == nullptr) {
// Fallback to the instance handle
hinstRes = AfxGetInstanceHandle();
hRsrc = ::FindResource(hinstRes, lpszResourceName, _T("PNG"));
if (hRsrc == nullptr) {
return FALSE;
}
}
HGLOBAL hGlobal = LoadResource(hinstRes, hRsrc);
if (hGlobal == nullptr) {
return FALSE;
}
LPVOID lpBuffer = ::LockResource(hGlobal);
if (lpBuffer == nullptr) {
FreeResource(hGlobal);
return FALSE;
}
BOOL bRes = LoadFromBuffer((LPBYTE) lpBuffer, (UINT) ::SizeofResource(hinstRes, hRsrc));
UnlockResource(hGlobal);
FreeResource(hGlobal);
return bRes;
}
//*******************************************************************************
BOOL CMPCPngImage::LoadFromFile(LPCTSTR lpszPath)
{
BOOL bRes = FALSE;
if (m_pImage == nullptr) {
m_pImage = DEBUG_NEW CImage;
ENSURE(m_pImage != nullptr);
}
if (m_pImage->Load(lpszPath) == S_OK) {
bRes = Attach(m_pImage->Detach());
}
return bRes;
}
//*******************************************************************************
BOOL CMPCPngImage::LoadFromBuffer(const LPBYTE lpBuffer, UINT uiSize)
{
ASSERT(lpBuffer != nullptr);
HGLOBAL hRes = ::GlobalAlloc(GMEM_MOVEABLE, uiSize);
if (hRes == nullptr) {
return FALSE;
}
IStream* pStream = nullptr;
LPVOID lpResBuffer = ::GlobalLock(hRes);
ASSERT(lpResBuffer != nullptr);
memcpy(lpResBuffer, lpBuffer, uiSize);
HRESULT hResult = ::CreateStreamOnHGlobal(hRes, FALSE, &pStream);
if (hResult != S_OK) {
return FALSE;
}
if (m_pImage == nullptr) {
m_pImage = DEBUG_NEW CImage;
ENSURE(m_pImage != nullptr);
}
m_pImage->Load(pStream);
pStream->Release();
BOOL bRes = Attach(m_pImage->Detach());
return bRes;
}
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