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Copy pathZMessageLoop.cpp
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133 lines (118 loc) · 2.31 KB
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#include "ZMessageLoop.h"
#include "ZUIMgr.h"
CZMessageLoop::CZMessageLoop(void)
: m_pMgr(NULL)
{
}
CZMessageLoop::~CZMessageLoop(void)
{
DestroyZUIMgr();
}
BOOL CZMessageLoop::AddMessageFilter(CZMessageFilter* pMessageFilter)
{
return m_aMsgFilter.Add(pMessageFilter);
}
BOOL CZMessageLoop::RemoveMessageFilter(CZMessageFilter* pMessageFilter)
{
return m_aMsgFilter.Remove(pMessageFilter);
}
BOOL CZMessageLoop::AddIdleHandler(CZIdleHandler* pIdleHandler)
{
return m_aIdleHandler.Add(pIdleHandler);
}
BOOL CZMessageLoop::RemoveIdleHandler(CZIdleHandler* pIdleHandler)
{
return m_aIdleHandler.Remove(pIdleHandler);
}
int CZMessageLoop::Run()
{
MSG msg = {0};
BOOL bDoIdle = TRUE;
int nIdleCount = 0;
do
{
while(bDoIdle && !::PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE))
{
if(!OnIdle(nIdleCount++))
{
bDoIdle = FALSE;
}
}
BOOL bRet = ::GetMessage(&msg, NULL, 0, 0);
if(-1 == bRet)
{
// The possibility of a -1 return value means that such code can lead to fatal application errors.
continue;
}
else if(!bRet)
{
// WM_QUIT
break;
}
if(!PreTranslateMessage(&msg))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
if(IsIdleMessage(&msg))
{
bDoIdle = TRUE;
nIdleCount = 0;
}
} while (1);
return (int)msg.wParam;
}
CZUIMgr* CZMessageLoop::CreateZUIMgr()
{
m_pMgr = new CZUIMgr();
ATLASSERT(m_pMgr != NULL);
return m_pMgr;
}
VOID CZMessageLoop::DestroyZUIMgr()
{
if(m_pMgr != NULL)
{
m_pMgr->Detach();
delete m_pMgr;
m_pMgr = NULL;
}
}
BOOL CZMessageLoop::PreTranslateMessage(MSG* pMsg)
{
for(int i = m_aMsgFilter.GetSize() - 1; i >= 0; i--)
{
CZMessageFilter* pMessageFilter = m_aMsgFilter[i];
if(pMessageFilter != NULL && pMessageFilter->PreTranslateMessage(pMsg))
{
return TRUE;
}
}
return FALSE;
}
BOOL CZMessageLoop::OnIdle(int /*nIdleCount*/)
{
for(int i = 0; i < m_aIdleHandler.GetSize(); i++)
{
CZIdleHandler* pIdleHandler = m_aIdleHandler[i];
if(pIdleHandler != NULL)
{
pIdleHandler->OnIdle();
}
}
return FALSE;
}
BOOL CZMessageLoop::IsIdleMessage(MSG* pMsg)
{
// These messages should NOT cause idle processing
switch(pMsg->message)
{
case WM_MOUSEMOVE:
#ifndef _WIN32_WCE
case WM_NCMOUSEMOVE:
#endif // !_WIN32_WCE
case WM_PAINT:
case 0x0118: // WM_SYSTIMER (caret blink)
return FALSE;
}
return TRUE;
}