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LCDOutput.cpp
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654 lines (523 loc) · 16.7 KB
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//************************************************************************
// The Logitech LCD SDK, including all acompanying documentation,
// is protected by intellectual property laws. All use of the Logitech
// LCD SDK is subject to the License Agreement found in the
// "Logitech LCD SDK License Agreement" file and in the Reference Manual.
// All rights not expressly granted by Logitech are reserved.
//************************************************************************
//************************************************************************
//
// LCDOutput.cpp
//
// The CLCDOutput manages the actual device and the various pages that
// are sent to that device
//
// This class is now managed by CLCDConnection. You no longer need to
// derive or instantiate this class yourself
//
// Logitech LCD SDK
//
// Copyright 2010 Logitech Inc.
//************************************************************************
#include "LCDUI.h"
//************************************************************************
//
// CLCDOutput::CLCDOutput
//
//************************************************************************
CLCDOutput::CLCDOutput(void)
: m_pActivePage(NULL),
m_hDevice(LGLCD_INVALID_DEVICE),
m_bSetAsForeground(FALSE),
m_dwButtonState(0),
m_nPriority(LGLCD_PRIORITY_NORMAL),
m_pGfx(NULL)
{
ZeroMemory(&m_OpenByTypeContext, sizeof(m_OpenByTypeContext));
}
//************************************************************************
//
// CLCDOutput::~CLCDOutput
//
//************************************************************************
CLCDOutput::~CLCDOutput(void)
{
Shutdown();
}
//************************************************************************
//
// CLCDOutput::SetGfx
//
//************************************************************************
void CLCDOutput::SetGfx(CLCDGfxBase *gfx)
{
m_pGfx = gfx;
}
//************************************************************************
//
// CLCDOutput::Open
//
//************************************************************************
BOOL CLCDOutput::Open(lgLcdOpenContext & OpenContext)
{
//Close the old device if there is one
Close();
DWORD res = lgLcdOpen(&OpenContext);
if (ERROR_SUCCESS != res)
{
if( res == ERROR_INVALID_PARAMETER )
{
LCDUITRACE( _T("Open failed: invalid parameter.\n") );
return FALSE;
}
else if( res == ERROR_ALREADY_EXISTS )
{
LCDUITRACE( _T("Open failed: already exists.\n") );
return FALSE;
}
return FALSE;
}
m_hDevice = OpenContext.device;
m_dwButtonState = 0;
// restores
SetAsForeground(m_bSetAsForeground);
OnOpenedDevice(m_hDevice);
return TRUE;
}
//************************************************************************
//
// CLCDOutput::OpenByType
//
//************************************************************************
BOOL CLCDOutput::OpenByType(lgLcdOpenByTypeContext &OpenContext)
{
//Close the old device if there is one
Close();
DWORD res = lgLcdOpenByType(&OpenContext);
if (ERROR_SUCCESS != res)
{
if( res == ERROR_INVALID_PARAMETER )
{
LCDUITRACE( _T("Open failed: invalid parameter.\n") );
return FALSE;
}
else if( res == ERROR_ALREADY_EXISTS )
{
LCDUITRACE( _T("Open failed: already exists.\n") );
return FALSE;
}
return FALSE;
}
m_hDevice = OpenContext.device;
m_dwButtonState = 0;
// restores
SetAsForeground(m_bSetAsForeground);
m_OpenByTypeContext = OpenContext;
OnOpenedDevice(m_hDevice);
return TRUE;
}
//************************************************************************
//
// CLCDOutput::ReOpenDeviceType
//
//************************************************************************
BOOL CLCDOutput::ReOpenDeviceType(void)
{
// The device type must be active
if (!HasBeenOpenedByDeviceType())
{
return FALSE;
}
return OpenByType(m_OpenByTypeContext);
}
//************************************************************************
//
// CLCDOutput::Close
//
//************************************************************************
void CLCDOutput::Close(void)
{
if( LGLCD_INVALID_DEVICE != m_hDevice )
{
OnClosingDevice(m_hDevice);
lgLcdClose(m_hDevice);
m_hDevice = LGLCD_INVALID_DEVICE;
}
}
//************************************************************************
//
// CLCDOutput::Shutdown
//
//************************************************************************
void CLCDOutput::Shutdown(void)
{
Close();
}
//************************************************************************
//
// CLCDOutput::AddPage
//
//************************************************************************
void CLCDOutput::AddPage(CLCDPage *pPage)
{
pPage->Initialize();
AddObject(pPage);
}
//************************************************************************
//
// CLCDOutput::RemovePage
//
//************************************************************************
void CLCDOutput::RemovePage(CLCDPage *pPage)
{
RemoveObject(pPage);
}
//************************************************************************
//
// CLCDOutput::ShowPage
//
//************************************************************************
void CLCDOutput::ShowPage(CLCDPage *pPage, BOOL bShow)
{
LCDUIASSERT(NULL != pPage);
if (bShow)
{
m_pActivePage = pPage;
OnPageShown(pPage);
}
else
{
// Expire it and update
pPage->SetExpiration(0);
OnUpdate(GetTickCount());
}
}
//************************************************************************
//
// CLCDOutput::GetShowingPage
//
//************************************************************************
CLCDPage* CLCDOutput::GetShowingPage(void)
{
return m_pActivePage;
}
//************************************************************************
//
// CLCDOutput::SetScreenPriority
//
//************************************************************************
void CLCDOutput::SetScreenPriority(DWORD priority)
{
// Priority has changed
// If we're going into idle, send an idle frame
if (LGLCD_PRIORITY_IDLE_NO_SHOW == priority)
{
lgLcdUpdateBitmap(m_hDevice, &m_pGfx->GetLCDScreen()->bmp_mono.hdr,
LGLCD_ASYNC_UPDATE(LGLCD_PRIORITY_IDLE_NO_SHOW));
}
m_nPriority = priority;
}
//************************************************************************
//
// CLCDOutput::GetScreenPriority
//
//************************************************************************
DWORD CLCDOutput::GetScreenPriority(void)
{
return m_nPriority;
}
//************************************************************************
//
// CLCDOutput::IsOpened
//
//************************************************************************
BOOL CLCDOutput::IsOpened(void)
{
return (LGLCD_INVALID_DEVICE != m_hDevice);
}
//************************************************************************
//
// CLCDOutput::SetAsForeground
//
//************************************************************************
HRESULT CLCDOutput::SetAsForeground(BOOL bSetAsForeground)
{
m_bSetAsForeground = bSetAsForeground;
if (LGLCD_INVALID_DEVICE != m_hDevice)
{
DWORD dwRes = lgLcdSetAsLCDForegroundApp(m_hDevice, bSetAsForeground);
if(ERROR_SUCCESS != dwRes)
{
return MAKE_HRESULT(SEVERITY_ERROR, 0, dwRes);
}
}
return E_FAIL;
}
//************************************************************************
//
// CLCDOutput::OnDraw
//
//************************************************************************
BOOL CLCDOutput::OnDraw(void)
{
DWORD dwPriorityToUse = LGLCD_ASYNC_UPDATE(m_nPriority);
if ( (NULL == m_pActivePage) ||
(LGLCD_INVALID_DEVICE == m_hDevice) ||
(LGLCD_PRIORITY_IDLE_NO_SHOW == dwPriorityToUse) )
{
// don't submit the bitmap
return TRUE;
}
// Render the active screen
m_pGfx->BeginDraw();
m_pGfx->ClearScreen();
m_pActivePage->OnDraw(*m_pGfx);
m_pGfx->EndDraw();
// Get the active bitmap
lgLcdBitmap* pBitmap = m_pGfx->GetLCDScreen();
// Only submit if the bitmap needs to be updated
// (If the priority or bitmap have changed)
DWORD res = ERROR_SUCCESS;
if (DoesBitmapNeedUpdate(pBitmap))
{
res = lgLcdUpdateBitmap(m_hDevice, &pBitmap->bmp_mono.hdr, dwPriorityToUse);
HandleErrorFromAPI(res);
}
return (LGLCD_INVALID_DEVICE != m_hDevice);
}
//************************************************************************
//
// CLCDOutput::OnUpdate
//
//************************************************************************
void CLCDOutput::OnUpdate(DWORD dwTimestamp)
{
if (m_pActivePage)
{
m_pActivePage->OnUpdate(dwTimestamp);
}
// check for expiration
if (m_pActivePage && m_pActivePage->HasExpired())
{
m_pActivePage = NULL;
//m_nPriority = LGLCD_PRIORITY_FYI; -> needs to go so that if a
// program sets priority to LGLCD_PRIORITY_BACKGROUND, that
// priority sticks.
OnPageExpired(m_pActivePage);
// find the next active screen
for (size_t i = 0; i < m_Objects.size(); i++)
{
CLCDPage *pPage = dynamic_cast<CLCDPage*>(m_Objects[i]);
LCDUIASSERT(NULL != pPage);
if (!pPage->HasExpired())
{
ShowPage(pPage);
//m_nPriority = LGLCD_PRIORITY_FYI; -> needs to go so that if a
// program sets priority to LGLCD_PRIORITY_BACKGROUND, that
// priority sticks.
break;
}
}
// if no screen found, empty the screen at idle priority
if (NULL == m_pActivePage)
{
OnEnteringIdle();
if (LGLCD_INVALID_DEVICE != m_hDevice)
{
m_pGfx->ClearScreen();
lgLcdUpdateBitmap(m_hDevice, &m_pGfx->GetLCDScreen()->bmp_mono.hdr,
LGLCD_ASYNC_UPDATE(LGLCD_PRIORITY_IDLE_NO_SHOW));
}
}
}
}
//************************************************************************
//
// CLCDOutput::GetSoftButtonState
//
//************************************************************************
DWORD CLCDOutput::GetSoftButtonState(void)
{
return IsOpened() ? m_dwButtonState : 0;
}
//************************************************************************
//
// CLCDOutput::HandleErrorFromAPI
//
//************************************************************************
HRESULT CLCDOutput::HandleErrorFromAPI(DWORD dwRes)
{
switch(dwRes)
{
// all is well
case ERROR_SUCCESS:
case RPC_S_PROTOCOL_ERROR:
break;
// we lost our device
case ERROR_DEVICE_NOT_CONNECTED:
LCDUITRACE(_T("lgLcdAPI returned with ERROR_DEVICE_NOT_CONNECTED, closing device\n"));
Close();
break;
default:
LCDUITRACE(_T("lgLcdAPI returned with other error (0x%08x) closing device\n"));
Close();
// something else happened, such as LCDMon that was terminated
break;
}
if(ERROR_SUCCESS != dwRes)
{
return MAKE_HRESULT(SEVERITY_ERROR, 0, dwRes);
}
return S_OK;
}
//************************************************************************
//
// CLCDOutput::DoesBitmapNeedUpdate
//
//************************************************************************
BOOL CLCDOutput::DoesBitmapNeedUpdate(lgLcdBitmap* pBitmap)
{
UNREFERENCED_PARAMETER(pBitmap);
// For now, always update
return TRUE;
}
//************************************************************************
//
// CLCDOutput::OnPageExpired
//
//************************************************************************
void CLCDOutput::OnPageExpired(CLCDCollection* pScreen)
{
UNREFERENCED_PARAMETER(pScreen);
}
//************************************************************************
//
// CLCDOutput::OnPageShown
//
//************************************************************************
void CLCDOutput::OnPageShown(CLCDCollection* pScreen)
{
UNREFERENCED_PARAMETER(pScreen);
}
//************************************************************************
//
// CLCDOutput::OnEnteringIdle
//
//************************************************************************
void CLCDOutput::OnEnteringIdle(void)
{
}
//************************************************************************
//
// CLCDOutput::OnClosingDevice
//
//************************************************************************
void CLCDOutput::OnClosingDevice(int hDevice)
{
UNREFERENCED_PARAMETER(hDevice);
}
//************************************************************************
//
// CLCDOutput::OnOpenedDevice
//
//************************************************************************
void CLCDOutput::OnOpenedDevice(int hDevice)
{
UNREFERENCED_PARAMETER(hDevice);
}
//************************************************************************
//
// CLCDOutput::OnSoftButtonEvent
//
//************************************************************************
void CLCDOutput::OnSoftButtonEvent(DWORD dwButtonState)
{
if (LGLCD_DEVICE_FAMILY_QVGA_BASIC == m_pGfx->GetFamily())
{
HandleButtonState(dwButtonState, LGLCDBUTTON_LEFT);
HandleButtonState(dwButtonState, LGLCDBUTTON_RIGHT);
HandleButtonState(dwButtonState, LGLCDBUTTON_OK);
HandleButtonState(dwButtonState, LGLCDBUTTON_CANCEL);
HandleButtonState(dwButtonState, LGLCDBUTTON_UP);
HandleButtonState(dwButtonState, LGLCDBUTTON_DOWN);
HandleButtonState(dwButtonState, LGLCDBUTTON_MENU);
}
else
{
HandleButtonState(dwButtonState, LGLCDBUTTON_BUTTON0);
HandleButtonState(dwButtonState, LGLCDBUTTON_BUTTON1);
HandleButtonState(dwButtonState, LGLCDBUTTON_BUTTON2);
HandleButtonState(dwButtonState, LGLCDBUTTON_BUTTON3);
}
m_dwButtonState = dwButtonState;
}
//************************************************************************
//
// CLCDOutput::HandleButtonState
//
//************************************************************************
void CLCDOutput::HandleButtonState(DWORD dwButtonState, DWORD dwButton)
{
if ( (m_dwButtonState & dwButton) && !(dwButtonState & dwButton) )
{
LCDUITRACE(_T("Button 0x%x released\n"), dwButton);
OnLCDButtonUp(dwButton);
}
if ( !(m_dwButtonState & dwButton) && (dwButtonState & dwButton) )
{
LCDUITRACE(_T("Button 0x%x pressed\n"), dwButton);
OnLCDButtonDown(dwButton);
}
}
//************************************************************************
//
// CLCDOutput::OnLCDButtonDown
//
//************************************************************************
void CLCDOutput::OnLCDButtonDown(int nButton)
{
if (m_pActivePage)
{
m_pActivePage->OnLCDButtonDown(nButton);
}
}
//************************************************************************
//
// CLCDOutput::OnLCDButtonUp
//
//************************************************************************
void CLCDOutput::OnLCDButtonUp(int nButton)
{
if (m_pActivePage)
{
m_pActivePage->OnLCDButtonUp(nButton);
}
}
//************************************************************************
//
// CLCDOutput::GetDeviceId
//
//************************************************************************
int CLCDOutput::GetDeviceId(void)
{
return m_hDevice;
}
//************************************************************************
//
// CLCDOutput::StopOpeningByDeviceType
//
//************************************************************************
void CLCDOutput::StopOpeningByDeviceType(void)
{
m_OpenByTypeContext.deviceType = 0;
}
//************************************************************************
//
// CLCDOutput::HasBeenOpenedByDeviceType
//
//************************************************************************
BOOL CLCDOutput::HasBeenOpenedByDeviceType(void)
{
return (0 != m_OpenByTypeContext.deviceType);
}
//** end of LCDOutput.cpp ************************************************