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//************************************************************************
//
// LCDCollection.cpp
//
// The CLCDCollection class is a generic collection of CLCDBase objects.
//
// Logitech LCD SDK
//
// Copyright 2005 Logitech Inc.
//************************************************************************
#include "LCDCollection.h"
//************************************************************************
//
// CLCDCollection::CLCDCollection
//
//************************************************************************
CLCDCollection::CLCDCollection(void)
{
}
//************************************************************************
//
// CLCDCollection::~CLCDCollection
//
//************************************************************************
CLCDCollection::~CLCDCollection(void)
{
}
//************************************************************************
//
// CLCDCollection::AddObject
//
//************************************************************************
BOOL CLCDCollection::AddObject(CLCDBase* pObject)
{
//TODO: handle addition of same object twice...
m_Objects.push_back(pObject);
return TRUE;
}
//************************************************************************
//
// CLCDCollection::RemoveObject
//
//************************************************************************
BOOL CLCDCollection::RemoveObject(CLCDBase* pObject)
{
LCD_OBJECT_LIST::iterator it = m_Objects.begin();
while(it != m_Objects.end())
{
if (*it == pObject)
{
m_Objects.erase(it);
break;
}
++it;
}
return FALSE;
}
//************************************************************************
//
// CLCDCollection::OnDraw
//
//************************************************************************
void CLCDCollection::OnDraw(CLCDGfx &rGfx)
{
LCD_OBJECT_LIST::iterator it = m_Objects.begin();
while(it != m_Objects.end())
{
CLCDBase *pObject = *it;
LCDUIASSERT(NULL != pObject);
if (!pObject->IsVisible())
{
++it;
continue;
}
// create the clip region
HRGN hRgn = CreateRectRgn(pObject->GetOrigin().x, pObject->GetOrigin().y,
pObject->GetOrigin().x + pObject->GetWidth(),
pObject->GetOrigin().y + pObject->GetHeight());
// ensure that controls only draw within their specified region
SelectClipRgn(rGfx.GetHDC(), hRgn);
// free the region (a copy is used in the call above)
DeleteObject(hRgn);
// offset the control at its origin so controls use (0,0)
POINT ptPrevViewportOrg = { 0, 0 };
SetViewportOrgEx(rGfx.GetHDC(),
pObject->GetOrigin().x,
pObject->GetOrigin().y,
&ptPrevViewportOrg);
// allow controls to supply additional translation
// this allows controls to move freely within the confined viewport
OffsetViewportOrgEx(rGfx.GetHDC(),
pObject->GetLogicalOrigin().x,
pObject->GetLogicalOrigin().y,
NULL);
pObject->OnDraw(rGfx);
// set the clipping region to nothing
SelectClipRgn(rGfx.GetHDC(), NULL);
// restore the viewport origin
SetViewportOrgEx(rGfx.GetHDC(),
ptPrevViewportOrg.x,
ptPrevViewportOrg.y,
NULL);
// restore the viewport origin offset
OffsetViewportOrgEx(rGfx.GetHDC(), 0, 0, NULL);
++it;
}
}
//************************************************************************
//
// CLCDCollection::OnUpdate
//
//************************************************************************
void CLCDCollection::OnUpdate(DWORD dwTimestamp)
{
LCD_OBJECT_LIST::iterator it = m_Objects.begin();
while(it != m_Objects.end())
{
CLCDBase *pObject = *it;
LCDUIASSERT(NULL != pObject);
pObject->OnUpdate(dwTimestamp);
++it;
}
}
//************************************************************************
//
// CLCDCollection::ResetUpdate
//
//************************************************************************
void CLCDCollection::ResetUpdate(void)
{
LCD_OBJECT_LIST::iterator it = m_Objects.begin();
while(it != m_Objects.end())
{
CLCDBase *pObject = *it;
LCDUIASSERT(NULL != pObject);
pObject->ResetUpdate();
++it;
}
}
//************************************************************************
//
// CLCDCollection::Show
//
//************************************************************************
void CLCDCollection::Show(BOOL bShow)
{
LCD_OBJECT_LIST::iterator it = m_Objects.begin();
while(it != m_Objects.end())
{
CLCDBase *pObject = *it;
LCDUIASSERT(NULL != pObject);
pObject->Show(bShow);
++it;
}
CLCDBase::Show(bShow);
}
//** end of LCDCollection.cpp ********************************************
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