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windows-xp/Source/XPSP1/NT/printscan/ui/wiavidd/videodlg.cpp

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/*****************************************************************************
*
* (C) CORPYRIGHT MICROSOFT CORPORATION, 1999 - 2000
*
* TITLE: videodlg.cpp
*
* VERSION: 1.0
*
* AUTHOR: RickTu
*
* DATE: 10/14/99
*
* DESCRIPTION: Implementation of DialogProc for video capture common dialog
*
*****************************************************************************/
#include <precomp.h>
#pragma hdrstop
#include "wiacsh.h"
#include "modlock.h"
#include "wiadevdp.h"
//
// Help IDs
//
static const DWORD g_HelpIDs[] =
{
IDC_VIDDLG_BIG_TITLE, -1,
IDC_VIDDLG_LITTLE_TITLE, -1,
IDC_VIDDLG_PREVIEW, IDH_WIA_VIDEO,
IDC_VIDDLG_THUMBNAILLIST, IDH_WIA_CAPTURED_IMAGES,
IDC_VIDDLG_CAPTURE, IDH_WIA_CAPTURE,
IDOK, IDH_WIA_VIDEO_GET_PICTURE,
IDCANCEL, IDH_CANCEL,
0, 0
};
#define IDC_SIZEBOX 1113
//
// If the callee doesn't return this value, we delete the message data ourselves.
//
#ifndef HANDLED_THREAD_MESSAGE
#define HANDLED_THREAD_MESSAGE 2032
#endif
// Thumbnail whitespace: the space in between images and their selection rectangles
// CThese values were discovered by trail and error. For instance, if you reduce
// c_nAdditionalMarginY to 20, you get really bizarre spacing problems in the list view
// in vertical mode. These values could become invalid in future versions of the listview.
static const int c_nAdditionalMarginX = 10;
static const int c_nAdditionalMarginY = 6;
static int c_nMinThumbnailWidth = 90;
static int c_nMinThumbnailHeight = 90;
static int c_nMaxThumbnailWidth = 120;
static int c_nMaxThumbnailHeight = 120;
//
// Map of background thread messages
//
static CThreadMessageMap g_MsgMap[] =
{
{ TQ_DESTROY, CVideoCaptureDialog::OnThreadDestroy},
{ TQ_GETTHUMBNAIL, CVideoCaptureDialog::OnGetThumbnail},
{ 0, NULL}
};
class CGlobalInterfaceTableThreadMessage : public CNotifyThreadMessage
{
private:
DWORD m_dwGlobalInterfaceTableCookie;
private:
// No implementation
CGlobalInterfaceTableThreadMessage(void);
CGlobalInterfaceTableThreadMessage &operator=( const CGlobalInterfaceTableThreadMessage & );
CGlobalInterfaceTableThreadMessage( const CGlobalInterfaceTableThreadMessage & );
public:
CGlobalInterfaceTableThreadMessage( int nMessage, HWND hWndNotify, DWORD dwGlobalInterfaceTableCookie )
: CNotifyThreadMessage( nMessage, hWndNotify ),
m_dwGlobalInterfaceTableCookie(dwGlobalInterfaceTableCookie)
{
}
DWORD GlobalInterfaceTableCookie(void) const
{
return(m_dwGlobalInterfaceTableCookie);
}
};
class CThumbnailThreadMessage : public CGlobalInterfaceTableThreadMessage
{
private:
SIZE m_sizeThumb;
private:
// No implementation
CThumbnailThreadMessage(void);
CThumbnailThreadMessage &operator=( const CThumbnailThreadMessage & );
CThumbnailThreadMessage( const CThumbnailThreadMessage & );
public:
CThumbnailThreadMessage( HWND hWndNotify, DWORD dwGlobalInterfaceTableCookie, const SIZE &sizeThumb )
: CGlobalInterfaceTableThreadMessage( TQ_GETTHUMBNAIL, hWndNotify, dwGlobalInterfaceTableCookie ),
m_sizeThumb(sizeThumb)
{
}
const SIZE &ThumbSize(void) const
{
return(m_sizeThumb);
}
};
//
// Avoids unnecessary state changes
//
static inline VOID MyEnableWindow( HWND hWnd, BOOL bEnable )
{
if (bEnable && !IsWindowEnabled(hWnd))
{
EnableWindow(hWnd,TRUE);
}
else if (!bEnable && IsWindowEnabled(hWnd))
{
EnableWindow(hWnd,FALSE);
}
}
/*****************************************************************************
CVideoCaptureDialog constructor
We don't have a destructor
*****************************************************************************/
CVideoCaptureDialog::CVideoCaptureDialog( HWND hWnd )
: m_hWnd(hWnd),
m_bFirstTime(true),
m_hBigFont(NULL),
m_nListViewWidth(0),
m_hIconLarge(NULL),
m_hIconSmall(NULL),
m_hBackgroundThread(NULL),
m_nDialogMode(0),
m_hAccelTable(NULL),
m_nParentFolderImageListIndex(0),
m_pThreadMessageQueue(NULL)
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::CVideoCaptureDialog")));
m_pThreadMessageQueue = new CThreadMessageQueue;
if (m_pThreadMessageQueue)
{
//
// Note that CBackgroundThread takes ownership of m_pThreadMessageQueue, and it doesn't have to be deleted in this thread
//
m_hBackgroundThread = CBackgroundThread::Create( m_pThreadMessageQueue, g_MsgMap, m_CancelEvent.Event(), g_hInstance );
}
m_CurrentAspectRatio.cx = 4;
m_CurrentAspectRatio.cy = 3;
m_sizeThumbnails.cx = c_nMaxThumbnailWidth;
m_sizeThumbnails.cy = c_nMaxThumbnailHeight;
WIA_ASSERT(m_hBackgroundThread != NULL);
}
/*****************************************************************************
CVideoCaptureDialog::OnInitDialog
Handle WM_INITIDIALOG
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnInitDialog( WPARAM, LPARAM lParam )
{
WIA_PUSHFUNCTION(TEXT("CVideoCaptureDialog::OnInitDialog"));
HRESULT hr;
//
// Make sure the background queue was successfully created
//
if (!m_pThreadMessageQueue)
{
WIA_ERROR((TEXT("VIDEODLG: unable to start background queue")));
EndDialog( m_hWnd, E_OUTOFMEMORY );
return(0);
}
//
// Save incoming data
//
m_pDeviceDialogData = (PDEVICEDIALOGDATA)lParam;
//
// Make sure we have valid arguments
//
if (!m_pDeviceDialogData)
{
WIA_ERROR((TEXT("VIDEODLG: Invalid paramater: PDEVICEDIALOGDATA")));
EndDialog( m_hWnd, E_INVALIDARG );
return(0);
}
//
// Initialialize our return stuff
//
if (m_pDeviceDialogData)
{
m_pDeviceDialogData->lItemCount = 0;
m_pDeviceDialogData->ppWiaItems = NULL;
}
//
// Make sure we have a valid device
//
if (!m_pDeviceDialogData->pIWiaItemRoot)
{
WIA_ERROR((TEXT("VIDEODLG: Invalid paramaters: pIWiaItem")));
EndDialog( m_hWnd, E_INVALIDARG );
return(0);
}
//
// Get deviceID for this device
//
PropStorageHelpers::GetProperty(m_pDeviceDialogData->pIWiaItemRoot,WIA_DIP_DEV_ID,m_strwDeviceId);
//
// Register for device disconnected, item creation and deletion events...
//
hr = CoCreateInstance( CLSID_WiaDevMgr, NULL, CLSCTX_LOCAL_SERVER, IID_IWiaDevMgr, (LPVOID *)&m_pDevMgr );
WIA_CHECK_HR(hr,"CoCreateInstance( WiaDevMgr )");
if (SUCCEEDED(hr) && m_pDevMgr)
{
CVideoCallback *pVC = new CVideoCallback();
if (pVC)
{
hr = pVC->Initialize( m_hWnd );
WIA_CHECK_HR(hr,"pVC->Initialize()");
if (SUCCEEDED(hr))
{
CComPtr<IWiaEventCallback> pWiaEventCallback;
hr = pVC->QueryInterface( IID_IWiaEventCallback,
(void**)&pWiaEventCallback
);
WIA_CHECK_HR(hr,"pVC->QI( IID_IWiaEventCallback )");
if (SUCCEEDED(hr) && pWiaEventCallback)
{
CSimpleBStr bstr( m_strwDeviceId );
hr = m_pDevMgr->RegisterEventCallbackInterface( WIA_REGISTER_EVENT_CALLBACK,
bstr,
&WIA_EVENT_DEVICE_DISCONNECTED,
pWiaEventCallback,
&m_pDisconnectedCallback
);
WIA_CHECK_HR(hr,"RegisterEvent( DEVICE_DISCONNECTED )");
hr = m_pDevMgr->RegisterEventCallbackInterface( WIA_REGISTER_EVENT_CALLBACK,
bstr,
&WIA_EVENT_ITEM_DELETED,
pWiaEventCallback,
&m_pCreateCallback
);
WIA_CHECK_HR(hr,"RegisterEvent( ITEM_DELETE )");
hr = m_pDevMgr->RegisterEventCallbackInterface( WIA_REGISTER_EVENT_CALLBACK,
bstr,
&WIA_EVENT_ITEM_CREATED,
pWiaEventCallback,
&m_pDeleteCallback
);
WIA_CHECK_HR(hr,"RegisterEvent( ITEM_CREATED )");
}
else
{
WIA_ERROR((TEXT("Either QI failed or pWiaEventCallback is NULL!")));
}
}
pVC->Release();
}
}
if (SUCCEEDED(hr) )
{
// Create the WiaVideo object
hr = CoCreateInstance(CLSID_WiaVideo, NULL, CLSCTX_INPROC_SERVER,
IID_IWiaVideo, (LPVOID *)&m_pWiaVideo);
WIA_CHECK_HR(hr,"CoCreateInstance( WiaVideo )");
}
//
// Prevent multiple selection
//
if (m_pDeviceDialogData->dwFlags & WIA_DEVICE_DIALOG_SINGLE_IMAGE)
{
LONG_PTR lStyle = GetWindowLongPtr( GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ), GWL_STYLE );
SetWindowLongPtr( GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ), GWL_STYLE, lStyle | LVS_SINGLESEL );
m_nDialogMode = SINGLESEL_MODE;
//
// Hide the "Select All" button
//
ShowWindow( GetDlgItem( m_hWnd, IDC_VIDDLG_SELECTALL ), SW_HIDE );
//
// Change text accordingly
//
CSimpleString( IDS_VIDDLG_TITLE_SINGLE_SEL, g_hInstance ).SetWindowText( GetDlgItem( m_hWnd, IDC_VIDDLG_BIG_TITLE ) );
CSimpleString( IDS_VIDDLG_SUBTITLE_SINGLE_SEL, g_hInstance ).SetWindowText( GetDlgItem( m_hWnd, IDC_VIDDLG_LITTLE_TITLE ) );
CSimpleString( IDS_VIDDLG_OK_SINGLE_SEL, g_hInstance ).SetWindowText( GetDlgItem( m_hWnd, IDOK ) );
}
else
{
m_nDialogMode = MULTISEL_MODE;
}
//
// Make the lovely font
//
m_hBigFont = WiaUiUtil::CreateFontWithPointSizeFromWindow( GetDlgItem(m_hWnd,IDC_VIDDLG_BIG_TITLE), 14, false, false );
if (m_hBigFont)
{
SendDlgItemMessage( m_hWnd,
IDC_VIDDLG_BIG_TITLE,
WM_SETFONT,
reinterpret_cast<WPARAM>(m_hBigFont),
MAKELPARAM(TRUE,0)
);
}
//
// Save the minimum size of the dialog
//
RECT rcWindow;
GetWindowRect( m_hWnd, &rcWindow );
m_sizeMinimumWindow.cx = rcWindow.right - rcWindow.left;
m_sizeMinimumWindow.cy = rcWindow.bottom - rcWindow.top;
//
// Create the sizing control
//
HWND hWndSizingControl = CreateWindowEx( 0, TEXT("scrollbar"), TEXT(""),
WS_CHILD|WS_VISIBLE|SBS_SIZEGRIP|WS_CLIPSIBLINGS|SBS_SIZEBOXBOTTOMRIGHTALIGN|SBS_BOTTOMALIGN|WS_GROUP,
CSimpleRect(m_hWnd).Width()-GetSystemMetrics(SM_CXVSCROLL),
CSimpleRect(m_hWnd).Height()-GetSystemMetrics(SM_CYHSCROLL),
GetSystemMetrics(SM_CXVSCROLL),
GetSystemMetrics(SM_CYHSCROLL),
m_hWnd, reinterpret_cast<HMENU>(IDC_SIZEBOX),
g_hInstance, NULL );
if (!hWndSizingControl)
{
WIA_ERROR((TEXT("CreateWindowEx( sizing control ) failed!")));
}
//
// Reposition all the controls
//
ResizeAll();
//
// Center the window over its parent
//
WiaUiUtil::CenterWindow( m_hWnd, GetParent(m_hWnd) );
//
// Get the device icons and set the window icons
//
CSimpleStringWide strwDeviceId, strwClassId;
LONG nDeviceType;
if (PropStorageHelpers::GetProperty(m_pDeviceDialogData->pIWiaItemRoot,WIA_DIP_UI_CLSID,strwClassId) &&
PropStorageHelpers::GetProperty(m_pDeviceDialogData->pIWiaItemRoot,WIA_DIP_DEV_ID,strwDeviceId) &&
PropStorageHelpers::GetProperty(m_pDeviceDialogData->pIWiaItemRoot,WIA_DIP_DEV_TYPE,nDeviceType))
{
if (SUCCEEDED(WiaUiExtensionHelper::GetDeviceIcons( CSimpleBStr(strwClassId), nDeviceType, &m_hIconSmall, &m_hIconLarge )))
{
if (m_hIconSmall)
{
SendMessage( m_hWnd, WM_SETICON, ICON_SMALL, reinterpret_cast<LPARAM>(m_hIconSmall) );
}
if (m_hIconLarge)
{
SendMessage( m_hWnd, WM_SETICON, ICON_BIG, reinterpret_cast<LPARAM>(m_hIconLarge) );
}
}
}
SetForegroundWindow(m_hWnd);
return(0);
}
/*****************************************************************************
CVideoCaptureDialog::ResizeAll
Resizes and repositions all the controls when the dialog size
changes.
*****************************************************************************/
VOID CVideoCaptureDialog::ResizeAll(VOID)
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::ResizeAll")));
CSimpleRect rcClient(m_hWnd);
CMoveWindow mw;
CDialogUnits dialogUnits(m_hWnd);
//WIA_TRACE((TEXT("rcClient is l(%d) t(%d) r(%d) b(%d)"),rcClient.left, rcClient.top, rcClient.right, rcClient.bottom));
//WIA_TRACE((TEXT("rcClient is w(%d) h(%d)"),rcClient.Width(),rcClient.Height()));
//WIA_TRACE((TEXT("dialogUnits.StandardMargin is cx(%d) cy(%d)"),dialogUnits.StandardMargin().cx,dialogUnits.StandardMargin().cy));
//WIA_TRACE((TEXT("dialogUnits.StandardButtonMargin is cx(%d) cy(%d)"),dialogUnits.StandardButtonMargin().cx,dialogUnits.StandardButtonMargin().cy));
//
// Resize the big title
//
mw.Size( GetDlgItem( m_hWnd, IDC_VIDDLG_BIG_TITLE ),
rcClient.Width() - dialogUnits.StandardMargin().cx * 2,
0,
CMoveWindow::NO_SIZEY );
//
// Resize the subtitle
//
mw.Size( GetDlgItem( m_hWnd, IDC_VIDDLG_LITTLE_TITLE ),
rcClient.Width() - dialogUnits.StandardMargin().cx * 2,
0,
CMoveWindow::NO_SIZEY );
CSimpleRect rcOK( GetDlgItem( m_hWnd, IDOK ), CSimpleRect::WindowRect );
CSimpleRect rcCancel( GetDlgItem( m_hWnd, IDCANCEL ), CSimpleRect::WindowRect );
//WIA_TRACE((TEXT("rcOK is l(%d) t(%d) r(%d) b(%d)"),rcOK.left, rcOK.top, rcOK.right, rcOK.bottom));
//WIA_TRACE((TEXT("rcOK is w(%d) h(%d)"),rcOK.Width(), rcOK.Height()));
//WIA_TRACE((TEXT("rcCancel is l(%d) t(%d) r(%d) b(%d)"),rcCancel.left, rcCancel.top, rcCancel.right, rcCancel.bottom));
//WIA_TRACE((TEXT("rcCancel is w(%d) h(%d)"),rcCancel.Width(), rcCancel.Height()));
//
// Move the OK button
//
LONG x,y;
x = rcClient.Width() - dialogUnits.StandardMargin().cx - dialogUnits.StandardButtonMargin().cx - rcCancel.Width() - rcOK.Width();
y = rcClient.Height() - dialogUnits.StandardMargin().cy - rcOK.Height();
//WIA_TRACE((TEXT("Moving IDOK to x(%x) y(%d)"),x,y));
mw.Move( GetDlgItem( m_hWnd, IDOK ), x, y, 0 );
INT nTopOfOK = y;
INT nBottomOfSub = CSimpleRect( GetDlgItem(m_hWnd,IDC_VIDDLG_LITTLE_TITLE), CSimpleRect::WindowRect ).ScreenToClient(m_hWnd).bottom;
//
// Move the cancel button
//
x = rcClient.Width() - dialogUnits.StandardMargin().cx - rcCancel.Width();
y = rcClient.Height() - dialogUnits.StandardMargin().cy - rcCancel.Height();
//WIA_TRACE((TEXT("Moving IDCANCEL to x(%x) y(%d)"),x,y));
mw.Move( GetDlgItem( m_hWnd, IDCANCEL ), x, y, 0 );
//
// Move the resizing handle
//
x = rcClient.Width() - GetSystemMetrics(SM_CXVSCROLL);
y = rcClient.Height() - GetSystemMetrics(SM_CYHSCROLL);
//WIA_TRACE((TEXT("Moving IDC_SIZEBOX to x(%x) y(%d)"),x,y));
mw.Move( GetDlgItem( m_hWnd, IDC_SIZEBOX ), x, y );
//
// Resize the preview window & move the capture button
//
CSimpleRect rcSubTitle( GetDlgItem( m_hWnd, IDC_VIDDLG_LITTLE_TITLE ), CSimpleRect::ClientRect );
CSimpleRect rcCapture( GetDlgItem( m_hWnd, IDC_VIDDLG_CAPTURE ), CSimpleRect::ClientRect );
CSimpleRect rcSelectAll( GetDlgItem( m_hWnd, IDC_VIDDLG_SELECTALL ), CSimpleRect::ClientRect );
//WIA_TRACE((TEXT("rcSubTitle is l(%d) t(%d) r(%d) b(%d)"),rcSubTitle.left, rcSubTitle.top, rcSubTitle.right, rcSubTitle.bottom));
//WIA_TRACE((TEXT("rcSubTitle is w(%d) h(%d)"),rcSubTitle.Width(), rcSubTitle.Height()));
//WIA_TRACE((TEXT("rcCapture is l(%d) t(%d) r(%d) b(%d)"),rcCapture.left, rcCapture.top, rcCapture.right, rcCapture.bottom));
//WIA_TRACE((TEXT("rcCapture is w(%d) h(%d)"),rcCapture.Width(), rcCapture.Height()));
//WIA_TRACE((TEXT("rcSelectAll is l(%d) t(%d) r(%d) b(%d)"),rcSelectAll.left, rcSelectAll.top, rcSelectAll.right, rcSelectAll.bottom));
//WIA_TRACE((TEXT("rcSelectAll is w(%d) h(%d)"),rcSelectAll.Width(), rcSelectAll.Height()));
//WIA_TRACE((TEXT("nTopOfOK is (%d)"),nTopOfOK));
//WIA_TRACE((TEXT("nBottomOfSub is (%d)"),nBottomOfSub));
CSimpleRect rcAvailableArea(
dialogUnits.StandardMargin().cx,
nBottomOfSub + dialogUnits.StandardMargin().cy,
rcClient.right - dialogUnits.StandardMargin().cx,
nTopOfOK - (dialogUnits.StandardButtonMargin().cy * 2)
);
//WIA_TRACE((TEXT("rcAvailableArea is l(%d) t(%d) r(%d) b(%d)"),rcAvailableArea.left, rcAvailableArea.top, rcAvailableArea.right, rcAvailableArea.bottom));
//WIA_TRACE((TEXT("rcAvailableArea is w(%d) h(%d)"),rcAvailableArea.Width(), rcAvailableArea.Height()));
INT full_width = rcAvailableArea.right - rcAvailableArea.left;
INT preview_width = (full_width * 53) / 100;
//WIA_TRACE((TEXT("full_width is (%d)"),full_width));
//WIA_TRACE((TEXT("preview_width is (%d)"),preview_width));
//WIA_TRACE((TEXT("SizeMoving IDC_VIDDLG_PREVIEW to x(%d) y(%d) w(%d) h(%d)"),rcAvailableArea.left,rcAvailableArea.top,preview_width,rcAvailableArea.Height() - rcCapture.Height() - dialogUnits.StandardButtonMargin().cy));
mw.SizeMove( GetDlgItem( m_hWnd, IDC_VIDDLG_PREVIEW ),
rcAvailableArea.left,
rcAvailableArea.top,
preview_width,
rcAvailableArea.Height() - rcCapture.Height() - dialogUnits.StandardButtonMargin().cy
);
INT offset = (preview_width - rcCapture.Width()) / 2;
//WIA_TRACE((TEXT("offset is (%d)"),offset));
//WIA_TRACE((TEXT("Moving IDC_VIDDLG_CAPTURE to x(%d) y(%d)"),rcAvailableArea.left + offset,rcAvailableArea.bottom - rcCapture.Height()));
mw.Move( GetDlgItem( m_hWnd, IDC_VIDDLG_CAPTURE ),
rcAvailableArea.left + offset,
rcAvailableArea.bottom - rcCapture.Height(),
0 );
//
// Resize the thumbnail list & move the selectall button
//
INT leftThumbEdge = rcAvailableArea.left + preview_width + dialogUnits.StandardMargin().cx;
//WIA_TRACE((TEXT("leftThumbEdge is (%d)"),leftThumbEdge));
//WIA_TRACE((TEXT("SizeMoving IDC_VIDDLG_THUMBNAILLIST to x(%d) y(%d) w(%d) h(%d)"),leftThumbEdge,rcAvailableArea.top,rcAvailableArea.Width() - preview_width - dialogUnits.StandardMargin().cx,rcAvailableArea.Height() - rcSelectAll.Height() - dialogUnits.StandardButtonMargin().cy));
mw.SizeMove( GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ),
leftThumbEdge,
rcAvailableArea.top,
rcAvailableArea.Width() - preview_width - dialogUnits.StandardMargin().cx,
rcAvailableArea.Height() - rcSelectAll.Height() - dialogUnits.StandardButtonMargin().cy
);
offset = ((rcAvailableArea.right - leftThumbEdge - rcSelectAll.Width()) / 2);
//WIA_TRACE((TEXT("offset(new) is (%d)"),offset));
//WIA_TRACE((TEXT("Moving IDC_VIDDLG_SELECTALL to x(%d) y(%d)"),leftThumbEdge + offset,rcAvailableArea.bottom - rcSelectAll.Height()));
mw.Move( GetDlgItem( m_hWnd, IDC_VIDDLG_SELECTALL ),
leftThumbEdge + offset,
rcAvailableArea.bottom - rcSelectAll.Height(),
0 );
//
// Explicitly apply the moves, because the toolbar frame doesn't get painted properly
//
mw.Apply();
//
// Update the dialog's background to remove any weird stuff left behind
//
InvalidateRect( m_hWnd, NULL, FALSE );
UpdateWindow( m_hWnd );
}
/*****************************************************************************
CVideoCaptureDialog::OnSize
Handle WM_SIZE messages
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnSize( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnSize")));
ResizeAll();
//
// Tell the video preview window to resize in within it's
// container window as best it can.
//
if (m_pWiaVideo)
{
m_pWiaVideo->ResizeVideo(FALSE);
}
return(0);
}
/*****************************************************************************
CVideoCaptureDialog::OnShow
Handle WM_SHOW message
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnShow( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnShow")));
if (m_bFirstTime)
{
PostMessage( m_hWnd, PWM_POSTINIT, 0, 0 );
m_bFirstTime = false;
}
return(0);
}
/*****************************************************************************
CVideoCameraDialog::OnGetMinMaxInfo
Handle WM_GETMINMAXINFO
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnGetMinMaxInfo( WPARAM, LPARAM lParam )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnGetMinMaxInfo")));
WIA_TRACE((TEXT("m_sizeMinimumWindow = %d,%d"),m_sizeMinimumWindow.cx,m_sizeMinimumWindow.cy));
LPMINMAXINFO pMinMaxInfo = (LPMINMAXINFO)lParam;
pMinMaxInfo->ptMinTrackSize.x = m_sizeMinimumWindow.cx;
pMinMaxInfo->ptMinTrackSize.y = m_sizeMinimumWindow.cy;
return(0);
}
/*****************************************************************************
CVideoCameraDialog::OnDestroy
Handle WM_DESTROY message and do cleanup
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnDestroy( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnDestroy")));
//
// Unregister for events
//
m_pCreateCallback = NULL;
m_pDeleteCallback = NULL;
m_pDisconnectedCallback = NULL;
//
// Tell the background thread to destroy itself
//
m_pThreadMessageQueue->Enqueue( new CThreadMessage(TQ_DESTROY),CThreadMessageQueue::PriorityUrgent );
//
// Close the thread handle
//
CloseHandle( m_hBackgroundThread );
if (m_pDeviceDialogData && m_pDeviceDialogData->pIWiaItemRoot && m_pWiaVideo)
{
m_pWiaVideo->DestroyVideo();
}
//
// Delete resources
//
if (m_hBigFont)
{
DeleteObject(m_hBigFont);
m_hBigFont = NULL;
}
if (m_hImageList)
{
m_hImageList = NULL;
}
if (m_hAccelTable)
{
DestroyAcceleratorTable(m_hAccelTable);
m_hAccelTable = NULL;
}
if (m_hIconLarge)
{
DestroyIcon(m_hIconLarge);
m_hIconLarge = NULL;
}
if (m_hIconSmall)
{
DestroyIcon(m_hIconSmall);
m_hIconSmall = NULL;
}
return(0);
}
/*****************************************************************************
CVideoCaptureDialog::OnOK
Handle when the user presses "Get Pictures"
*****************************************************************************/
VOID CVideoCaptureDialog::OnOK( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCameraDialog::OnOK")));
HRESULT hr = S_OK;
//
// Start w/nothing to return
//
m_pDeviceDialogData->lItemCount = 0;
m_pDeviceDialogData->ppWiaItems = NULL;
//
// Get the indicies of the items that are selected
//
CSimpleDynamicArray<int> aIndices;
GetSelectionIndices( aIndices );
//
// Are there any items selected?
//
if (aIndices.Size())
{
//
// Calculate the size of the buffer needed
//
INT nArraySizeInBytes = sizeof(IWiaItem*) * aIndices.Size();
//
// Alloc a buffer to hold the items
//
m_pDeviceDialogData->ppWiaItems = (IWiaItem**)CoTaskMemAlloc(nArraySizeInBytes);
//
// If we allocated a buffer, fill it up with the
// items to return...
//
if (m_pDeviceDialogData->ppWiaItems)
{
INT i;
ZeroMemory( m_pDeviceDialogData->ppWiaItems, nArraySizeInBytes );
for (i=0;i<aIndices.Size();i++)
{
CCameraItem *pItem = GetListItemNode(aIndices[i]);
if (pItem && pItem->Item())
{
m_pDeviceDialogData->ppWiaItems[i] = pItem->Item();
m_pDeviceDialogData->ppWiaItems[i]->AddRef();
}
else
{
//
// Somehow the list got corrupted
//
hr = E_UNEXPECTED;
break;
}
}
if (!SUCCEEDED(hr))
{
//
// Clean up if we had a failure
//
for (i=0;i<aIndices.Size();i++)
{
if (m_pDeviceDialogData->ppWiaItems[i])
{
m_pDeviceDialogData->ppWiaItems[i]->Release();
}
}
CoTaskMemFree( m_pDeviceDialogData->ppWiaItems );
m_pDeviceDialogData->ppWiaItems = NULL;
}
else
{
m_pDeviceDialogData->lItemCount = aIndices.Size();
}
}
else
{
//
// Unable to alloc buffer
//
WIA_ERROR((TEXT("Couldn't allocate a buffer")));
hr = E_OUTOFMEMORY;
}
}
else
{
//
// There aren't any items selected, so just return without
// ending the dialog...
//
return;
}
EndDialog( m_hWnd, hr );
}
/*****************************************************************************
CVideoCaptureDialog::OnCancel
Handle when the user presses cancel.
*****************************************************************************/
VOID CVideoCaptureDialog::OnCancel( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCameraDialog::OnCancel")));
EndDialog( m_hWnd, S_FALSE );
}
/*****************************************************************************
CVideoCaptureDialog::OnSelectAll
Handle when the user presses "Select All" button
*****************************************************************************/
VOID CVideoCaptureDialog::OnSelectAll( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCameraDialog::OnSelectAll")));
LVITEM lvItem;
lvItem.mask = LVIF_STATE;
lvItem.iItem = 0;
lvItem.state = LVIS_SELECTED;
lvItem.stateMask = LVIS_SELECTED;
SendMessage( GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ), LVM_SETITEMSTATE, -1, reinterpret_cast<LPARAM>(&lvItem) );
}
/*****************************************************************************
CVideoCaptureDialog::AddItemToListView
Adds a new IWiaItem to the list view...
*****************************************************************************/
BOOL CVideoCaptureDialog::AddItemToListView( IWiaItem * pItem )
{
WIA_PUSHFUNCTION((TEXT("CVideoCameraDialog::AddItemToListView")));
if (!pItem)
{
WIA_ERROR((TEXT("pItem is NULL!")));
return FALSE;
}
//
// Add the new picture to our list
//
CCameraItem * pNewCameraItem = new CCameraItem( pItem );
if (pNewCameraItem)
{
WIA_TRACE((TEXT("Attempting to add new item to tree")));
m_CameraItemList.Add( NULL, pNewCameraItem );
}
else
{
WIA_ERROR((TEXT("Couldn't create a new pNewCameraItem")));
}
//
// Create a thumbnail for the new item
//
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
if (hwndList && pNewCameraItem)
{
HIMAGELIST hImageList = ListView_GetImageList( hwndList, LVSIL_NORMAL );
if (hImageList)
{
CVideoCaptureDialog::CreateThumbnails( pNewCameraItem,
hImageList,
FALSE
);
}
else
{
WIA_ERROR((TEXT("Couldn't get hImageList to get new thumbnail")));
}
//
// Update the listview with the new item
//
LVITEM lvItem;
INT iItem = ListView_GetItemCount( hwndList ) + 1;
ZeroMemory( &lvItem, sizeof(lvItem) );
lvItem.iItem = iItem;
lvItem.mask = LVIF_IMAGE|LVIF_PARAM;
lvItem.iImage = pNewCameraItem->ImageListIndex();
lvItem.lParam = (LPARAM)pNewCameraItem;
int nIndex = ListView_InsertItem( hwndList, &lvItem );
//
// Retrieve actual thumbnail
//
RequestThumbnails( pNewCameraItem );
//
// Select the new item
//
SetSelectedListItem( nIndex );
//
// Make sure the item is visible
//
ListView_EnsureVisible( hwndList, nIndex, FALSE );
}
return TRUE;
}
/*****************************************************************************
CVideoCaptureDialog::OnCapture
Handle when the user presses the "Capture" button
*****************************************************************************/
VOID CVideoCaptureDialog::OnCapture( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCameraDialog::OnCapture")));
//
// Disable capture button until we're done with this iteration
//
MyEnableWindow( GetDlgItem( m_hWnd, IDC_VIDDLG_CAPTURE ), FALSE );
//
// Tell the video device to snap a picture
//
CComPtr<IWiaItem> pItem;
if (m_pDeviceDialogData && m_pDeviceDialogData->pIWiaItemRoot && m_pWiaVideo)
{
WIA_TRACE((TEXT("Telling WiaVideo to take a picture")));
BSTR bstrNewImageFileName = NULL;
//
// Take the picture
//
HRESULT hr = m_pWiaVideo->TakePicture(&bstrNewImageFileName);
WIA_CHECK_HR(hr,"m_pWiaVideo->TakePicture");
if (hr == S_OK)
{
//
// Succeeded in taking the picture, setting the LAST_PICTURE_TAKEN property
// on the video driver to create a new item.
//
BOOL bSuccess = FALSE;
PROPVARIANT pv;
PropVariantInit(&pv);
pv.vt = VT_BSTR;
pv.bstrVal = bstrNewImageFileName;
bSuccess = PropStorageHelpers::SetProperty(m_pDeviceDialogData->pIWiaItemRoot,
WIA_DPV_LAST_PICTURE_TAKEN,
pv);
//
// Note that this will free the bstrNewImageFileName returned to
// us by WiaVideo
//
PropVariantClear(&pv);
}
}
//
// Re-Enable capture button now that we're done
//
MyEnableWindow( GetDlgItem( m_hWnd, IDC_VIDDLG_CAPTURE ), TRUE );
//
// Make sure the focus is still on our control
//
SetFocus( GetDlgItem( m_hWnd, IDC_VIDDLG_CAPTURE ) );
}
/*****************************************************************************
CVideoCaptureDialog::OnDblClickImageList
Translate a dbl-click on a thumbnail in the listview into a click
on the "Get Pictures" button.
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnDblClkImageList( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnDblClkImageList")));
SendMessage( m_hWnd, WM_COMMAND, MAKEWPARAM(IDOK,0), 0 );
return 0;
}
/*****************************************************************************
CVideoCaptureDialog::OnImageListItemChanged
Sent whenever an item in the thumbnail list changes.
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnImageListItemChanged( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnImageListItemChanged")));
HandleSelectionChange();
return 0;
}
/*****************************************************************************
CVideoCaptureDialog::OnImageListKeyDown
Forward the keyboard messages within the listview appropriately.
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnImageListKeyDown( WPARAM, LPARAM lParam )
{
LPNMLVKEYDOWN pnkd = reinterpret_cast<LPNMLVKEYDOWN>(lParam);
if (pnkd)
{
if (VK_LEFT == pnkd->wVKey && (GetKeyState(VK_MENU) & 0x8000))
{
SendMessage( m_hWnd, PWM_CHANGETOPARENT, 0, 0 );
}
}
return 0;
}
/*****************************************************************************
CVideoCaptureDialog::OnNotify
Handle WM_NOTIFY messages
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnNotify( WPARAM wParam, LPARAM lParam )
{
SC_BEGIN_NOTIFY_MESSAGE_HANDLERS()
{
SC_HANDLE_NOTIFY_MESSAGE_CONTROL( NM_DBLCLK, IDC_VIDDLG_THUMBNAILLIST, OnDblClkImageList );
SC_HANDLE_NOTIFY_MESSAGE_CONTROL( LVN_ITEMCHANGED, IDC_VIDDLG_THUMBNAILLIST, OnImageListItemChanged );
SC_HANDLE_NOTIFY_MESSAGE_CONTROL( LVN_KEYDOWN, IDC_VIDDLG_THUMBNAILLIST, OnImageListKeyDown );
}
SC_END_NOTIFY_MESSAGE_HANDLERS();
}
/*****************************************************************************
CVideoCaptureDialog::OnCommand
Handle WM_COMMAND messages
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnCommand( WPARAM wParam, LPARAM lParam )
{
SC_BEGIN_COMMAND_HANDLERS()
{
SC_HANDLE_COMMAND(IDOK, OnOK);
SC_HANDLE_COMMAND(IDCANCEL, OnCancel);
SC_HANDLE_COMMAND(IDC_VIDDLG_CAPTURE, OnCapture);
SC_HANDLE_COMMAND(IDC_VIDDLG_SELECTALL, OnSelectAll);
}
SC_END_COMMAND_HANDLERS();
}
/*****************************************************************************
CVideoCaptureDialog::OnGetThumbnail
Called by background thread to get the thumbnail for a given item.
*****************************************************************************/
BOOL WINAPI CVideoCaptureDialog::OnGetThumbnail( CThreadMessage *pMsg )
{
WIA_PUSHFUNCTION(TEXT("CVideoCaptureDialog::OnGetThumbnail"));
HBITMAP hBmpThumbnail = NULL;
CThumbnailThreadMessage *pThumbMsg = (CThumbnailThreadMessage *)(pMsg);
if (pThumbMsg)
{
CComPtr<IGlobalInterfaceTable> pGlobalInterfaceTable;
HRESULT hr = CoCreateInstance( CLSID_StdGlobalInterfaceTable,
NULL,
CLSCTX_INPROC_SERVER,
IID_IGlobalInterfaceTable,
(void **)&pGlobalInterfaceTable);
if (SUCCEEDED(hr) && pGlobalInterfaceTable)
{
CComPtr<IWiaItem> pIWiaItem;
hr = pGlobalInterfaceTable->GetInterfaceFromGlobal(
pThumbMsg->GlobalInterfaceTableCookie(),
IID_IWiaItem,
(void**)&pIWiaItem);
if (SUCCEEDED(hr) && pIWiaItem)
{
CComPtr<IWiaPropertyStorage> pIWiaPropertyStorage;
hr = pIWiaItem->QueryInterface( IID_IWiaPropertyStorage,
(void**)&pIWiaPropertyStorage
);
if (SUCCEEDED(hr) && pIWiaPropertyStorage)
{
PROPVARIANT PropVar[3];
PROPSPEC PropSpec[3];
PropSpec[0].ulKind = PRSPEC_PROPID;
PropSpec[0].propid = WIA_IPC_THUMB_WIDTH;
PropSpec[1].ulKind = PRSPEC_PROPID;
PropSpec[1].propid = WIA_IPC_THUMB_HEIGHT;
PropSpec[2].ulKind = PRSPEC_PROPID;
PropSpec[2].propid = WIA_IPC_THUMBNAIL;
hr = pIWiaPropertyStorage->ReadMultiple(ARRAYSIZE(PropSpec),PropSpec,PropVar );
if (SUCCEEDED(hr))
{
WIA_TRACE((TEXT("Attempting to get the thumbnail for GIT entry: %08X, %08X, %08X, %08X"),pThumbMsg->GlobalInterfaceTableCookie(),PropVar[0].vt,PropVar[1].vt,PropVar[2].vt));
if ((PropVar[0].vt == VT_I4 || PropVar[0].vt == VT_UI4) &&
(PropVar[1].vt == VT_I4 || PropVar[1].vt == VT_UI4) &&
(PropVar[2].vt == (VT_UI1|VT_VECTOR)))
{
BITMAPINFO bmi;
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = PropVar[0].ulVal;
bmi.bmiHeader.biHeight = PropVar[1].ulVal;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 24;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = 0;
bmi.bmiHeader.biXPelsPerMeter = 0;
bmi.bmiHeader.biYPelsPerMeter = 0;
bmi.bmiHeader.biClrUsed = 0;
bmi.bmiHeader.biClrImportant = 0;
HDC hDC = GetDC(NULL);
if (hDC)
{
PBYTE *pBits;
HBITMAP hDibSection = CreateDIBSection( hDC, &bmi, DIB_RGB_COLORS, (PVOID*)&pBits, NULL, 0 );
if (hDibSection)
{
CopyMemory( pBits, PropVar[2].caub.pElems, PropVar[2].caub.cElems );
hr = ScaleImage( hDC, hDibSection, hBmpThumbnail, pThumbMsg->ThumbSize());
if (SUCCEEDED(hr))
{
WIA_TRACE((TEXT("Sending this image to the notification window: %08X"),pThumbMsg->NotifyWindow()));
}
else
{
hBmpThumbnail = NULL;
}
DeleteObject(hDibSection);
}
ReleaseDC(NULL,hDC);
}
}
PropVariantClear(&PropVar[0]);
PropVariantClear(&PropVar[1]);
PropVariantClear(&PropVar[2]);
}
}
}
}
}
LRESULT lRes = SendMessage( pThumbMsg->NotifyWindow(), PWM_THUMBNAILSTATUS, (WPARAM)pThumbMsg->GlobalInterfaceTableCookie(), (LPARAM)hBmpThumbnail );
if (HANDLED_THREAD_MESSAGE != lRes && hBmpThumbnail)
{
DeleteObject( hBmpThumbnail );
}
return TRUE;
}
/*****************************************************************************
CVideoCaptureDialog::OnThreadDestroy
<Notes>
*****************************************************************************/
BOOL WINAPI CVideoCaptureDialog::OnThreadDestroy( CThreadMessage * )
{
WIA_PUSHFUNCTION(TEXT("CVideoCaptureDialog::OnThreadDestroy"));
return FALSE;
}
/*****************************************************************************
CVideoCaptureDialog::SetSelectedListItem
<Notes>
*****************************************************************************/
BOOL
CVideoCaptureDialog::SetSelectedListItem( int nIndex )
{
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
//
// Check for bad args
//
if (!hwndList)
{
return FALSE;
}
int iCount = ListView_GetItemCount(hwndList);
for (int i=0;i<iCount;i++)
{
ListView_SetItemState(hwndList,i,0,LVIS_SELECTED|LVIS_FOCUSED);
}
ListView_SetItemState(hwndList,nIndex,LVIS_SELECTED|LVIS_FOCUSED,LVIS_SELECTED|LVIS_FOCUSED);
return TRUE;
}
/*****************************************************************************
CVideoCaptureDialog::MarkItemDeletePending
<Notes>
*****************************************************************************/
VOID
CVideoCaptureDialog::MarkItemDeletePending( INT nIndex, BOOL bSet )
{
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
if (hwndList)
{
ListView_SetItemState( hwndList, nIndex, bSet ? LVIS_CUT : 0, LVIS_CUT );
}
}
/*****************************************************************************
CVideoCaptureDialog::PopulateList
Populates the listview with the current items.
*****************************************************************************/
BOOL
CVideoCaptureDialog::PopulateList( CCameraItem *pOldParent )
{
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
int nSelItem = 0;
if (hwndList)
{
ListView_DeleteAllItems( hwndList );
int nItem = 0;
CCameraItem *pCurr;
//
// If this is a child directory...
//
if (m_pCurrentParentItem)
{
//
// Start adding children
//
pCurr = m_pCurrentParentItem->Children();
//
// Insert a dummy item that the user can use to
// switch to the parent directory
//
LVITEM lvItem;
ZeroMemory( &lvItem, sizeof(lvItem) );
lvItem.iItem = nItem++;
lvItem.mask = LVIF_IMAGE|LVIF_PARAM;
lvItem.iImage = m_nParentFolderImageListIndex;
lvItem.lParam = 0;
ListView_InsertItem( hwndList, &lvItem );
}
else
{
//
// if it's a parent directory...
//
pCurr = m_CameraItemList.Root();
}
while (pCurr)
{
if (pOldParent && *pCurr == *pOldParent)
{
nSelItem = nItem;
}
if (pCurr->DeleteState() != CCameraItem::Delete_Deleted)
{
LVITEM lvItem;
ZeroMemory( &lvItem, sizeof(lvItem) );
lvItem.iItem = nItem++;
lvItem.mask = LVIF_IMAGE|LVIF_PARAM;
lvItem.iImage = pCurr->ImageListIndex();
lvItem.lParam = (LPARAM)pCurr;
int nIndex = ListView_InsertItem( hwndList, &lvItem );
if (nIndex >= 0 && pCurr->DeleteState() == CCameraItem::Delete_Pending)
{
MarkItemDeletePending(nIndex,true);
}
}
pCurr = pCurr->Next();
}
}
//
// If we've not calculated the width of the list in preview mode, attempt to do it
//
if (!m_nListViewWidth)
{
RECT rcItem;
if (ListView_GetItemRect( GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ), 0, &rcItem, LVIR_ICON ))
{
m_nListViewWidth = (rcItem.right-rcItem.left) + rcItem.left * 2 + GetSystemMetrics(SM_CXHSCROLL) + c_nAdditionalMarginX;
}
}
SetSelectedListItem(nSelItem);
return TRUE;
}
/*****************************************************************************
CVideoCaptureDialog::OnThumbnailStatus
<Notes>
*****************************************************************************/
LRESULT
CVideoCaptureDialog::OnThumbnailStatus( WPARAM wParam, LPARAM lParam )
{
WIA_PUSHFUNCTION(TEXT("CVideoCaptureDialog::OnThumbnailStatus"));
WIA_TRACE((TEXT("Looking for the item with the ID %08X"),wParam));
CCameraItem *pCameraItem = m_CameraItemList.Find( (DWORD)wParam );
if (pCameraItem)
{
WIA_TRACE((TEXT("Found a CameraItem * (%08X)"),pCameraItem));
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
if (hwndList)
{
WIA_TRACE((TEXT("Got the list control")));
HIMAGELIST hImageList = ListView_GetImageList( hwndList, LVSIL_NORMAL );
if (hImageList)
{
WIA_TRACE((TEXT("Got the image list")));
if ((HBITMAP)lParam)
{
if (ImageList_Replace( hImageList, pCameraItem->ImageListIndex(), (HBITMAP)lParam, NULL ))
{
WIA_TRACE((TEXT("Replaced the image in the list")));
int nItem = FindItemInList(pCameraItem);
if (nItem >= 0)
{
LV_ITEM lvItem;
::ZeroMemory(&lvItem,sizeof(LV_ITEM));
lvItem.iItem = nItem;
lvItem.mask = LVIF_IMAGE;
lvItem.iImage = pCameraItem->ImageListIndex();
ListView_SetItem( hwndList, &lvItem );
ListView_Update( hwndList, nItem );
InvalidateRect( hwndList, NULL, FALSE );
}
}
}
}
}
}
//
// Clean up the bitmap, regardless of any other failures, to avoid memory leaks
//
HBITMAP hBmpThumb = (HBITMAP)lParam;
if (hBmpThumb)
{
DeleteObject(hBmpThumb);
}
return HANDLED_THREAD_MESSAGE;
}
/*****************************************************************************
CVideoCaptureDialog::CreateThumbnails
<Notes>
*****************************************************************************/
void CVideoCaptureDialog::CreateThumbnails( CCameraItem *pRoot, HIMAGELIST hImageList, bool bForce )
{
CCameraItem *pCurr = pRoot;
while (pCurr)
{
if (pCurr->ImageListIndex()<0 || bForce)
{
//
// Get the item name
//
CSimpleStringWide strItemName;
PropStorageHelpers::GetProperty( pCurr->Item(), WIA_IPA_ITEM_NAME, strItemName );
//
// Create the title for the icon
//
CSimpleString strIconTitle;
if (pCurr->IsFolder())
{
strIconTitle = CSimpleStringConvert::NaturalString(strItemName);
}
else if (strItemName.Length())
{
strIconTitle.Format( IDS_VIDDLG_DOWNLOADINGTHUMBNAIL, g_hInstance, CSimpleStringConvert::NaturalString(strItemName).String() );
}
//
// Create the thumbnail
//
HBITMAP hBmp = WiaUiUtil::CreateIconThumbnail( GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ), m_sizeThumbnails.cx, m_sizeThumbnails.cy, g_hInstance, pCurr->IsFolder()?IDI_VIDDLG_FOLDER:IDI_VIDDLG_UNAVAILABLE, strIconTitle );
if (hBmp)
{
if (pCurr->ImageListIndex()<0)
{
pCurr->ImageListIndex(ImageList_Add( hImageList, hBmp, NULL ));
}
else
{
pCurr->ImageListIndex(ImageList_Replace( hImageList, pCurr->ImageListIndex(), hBmp, NULL ));
}
DeleteObject(hBmp);
}
}
if (pCurr->Children())
{
CreateThumbnails( pCurr->Children(), hImageList, bForce );
}
pCurr = pCurr->Next();
}
}
/*****************************************************************************
CVideoCaptureDialog::RequestThumbnails
<Notes>
*****************************************************************************/
VOID
CVideoCaptureDialog::RequestThumbnails( CCameraItem *pRoot )
{
WIA_PUSHFUNCTION(TEXT("CVideoCaptureDialog::RequestThumbnails"));
CCameraItem *pCurr = pRoot;
while (pCurr)
{
if (!pCurr->IsFolder())
{
m_pThreadMessageQueue->Enqueue( new CThumbnailThreadMessage( m_hWnd, pCurr->GlobalInterfaceTableCookie(), m_sizeThumbnails ) );
}
if (pCurr->Children())
{
RequestThumbnails( pCurr->Children() );
}
pCurr = pCurr->Next();
}
}
/*****************************************************************************
CVideoCaptureDialog::CreateThumbnails
<Notes>
*****************************************************************************/
VOID
CVideoCaptureDialog::CreateThumbnails( BOOL bForce )
{
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
if (hwndList)
{
HIMAGELIST hImageList = ListView_GetImageList( hwndList, LVSIL_NORMAL );
if (hImageList)
{
//
// Create the parent folder image and add it to the image list
//
HBITMAP hParentBitmap = WiaUiUtil::CreateIconThumbnail(
hwndList,
m_sizeThumbnails.cx,
m_sizeThumbnails.cy,
g_hInstance,
IDI_VIDDLG_PARENTFOLDER,
TEXT("(..)") );
if (hParentBitmap)
{
m_nParentFolderImageListIndex = ImageList_Add( hImageList, hParentBitmap, NULL );
DeleteObject(hParentBitmap);
}
//
// Create all of the other images
//
CreateThumbnails( m_CameraItemList.Root(), hImageList, bForce != 0 );
}
}
}
/*****************************************************************************
CVideoCaptureDialog::FindMaximumThumbnailSize
Looks through entire item list to get larget thumbnail.
*****************************************************************************/
BOOL
CVideoCaptureDialog::FindMaximumThumbnailSize( VOID )
{
WIA_PUSHFUNCTION(TEXT("CVideoCaptureDialog::FindMaximumThumbnailSize"));
BOOL bResult = false;
if (m_pDeviceDialogData && m_pDeviceDialogData->pIWiaItemRoot)
{
LONG nWidth, nHeight;
if (PropStorageHelpers::GetProperty( m_pDeviceDialogData->pIWiaItemRoot, WIA_DPC_THUMB_WIDTH, nWidth ) &&
PropStorageHelpers::GetProperty( m_pDeviceDialogData->pIWiaItemRoot, WIA_DPC_THUMB_WIDTH, nHeight ))
{
m_sizeThumbnails.cx = max(c_nMinThumbnailWidth,min(nWidth,c_nMaxThumbnailWidth));
m_sizeThumbnails.cy = max(c_nMinThumbnailHeight,min(nHeight,c_nMaxThumbnailHeight));
}
else
{
WIA_TRACE((TEXT("FindMaximumThumbnailSize: Unable to retrieve thumbnail size for device")));
}
}
return(bResult && m_sizeThumbnails.cx && m_sizeThumbnails.cy);
}
/*****************************************************************************
CVideoCaptureDialog::EnumerateItems
Enumerate all the items at this level of the camera.
*****************************************************************************/
HRESULT
CVideoCaptureDialog::EnumerateItems( CCameraItem *pCurrentParent, IEnumWiaItem *pIEnumWiaItem )
{
WIA_PUSHFUNCTION(TEXT("CCameraItemList::EnumerateItems"));
HRESULT hr = E_FAIL;
if (pIEnumWiaItem != NULL)
{
hr = pIEnumWiaItem->Reset();
while (hr == S_OK)
{
CComPtr<IWiaItem> pIWiaItem;
hr = pIEnumWiaItem->Next(1, &pIWiaItem, NULL);
if (hr == S_OK)
{
CCameraItem *pNewCameraItem = new CCameraItem( pIWiaItem );
if (pNewCameraItem && pNewCameraItem->Item())
{
m_CameraItemList.Add( pCurrentParent, pNewCameraItem );
LONG ItemType;
HRESULT hr2;
hr2 = pNewCameraItem->Item()->GetItemType(&ItemType);
if (SUCCEEDED(hr2))
{
if (ItemType & WiaItemTypeImage)
{
WIA_TRACE((TEXT("Found an image")));
}
else
{
WIA_TRACE((TEXT("Found something that is NOT an image")));
}
CComPtr <IEnumWiaItem> pIEnumChildItem;
hr2 = pIWiaItem->EnumChildItems(&pIEnumChildItem);
if (hr2 == S_OK)
{
EnumerateItems( pNewCameraItem, pIEnumChildItem );
}
}
}
}
}
}
return hr;
}
/*****************************************************************************
CVideoCaptureDialog::EnumerateAllCameraItems
Enumerate all the items in camera, including folders.
*****************************************************************************/
HRESULT CVideoCaptureDialog::EnumerateAllCameraItems(void)
{
CComPtr<IEnumWiaItem> pIEnumItem;
HRESULT hr = m_pDeviceDialogData->pIWiaItemRoot->EnumChildItems(&pIEnumItem);
if (hr == S_OK)
{
hr = EnumerateItems( NULL, pIEnumItem );
}
return(hr);
}
/*****************************************************************************
CVideoCaptureDialog::GetSelectionIndices
Returns an array with the list indicies of the items that are
selected in IDC_VIDDLG_THUMBNAILLIST
*****************************************************************************/
INT
CVideoCaptureDialog::GetSelectionIndices( CSimpleDynamicArray<int> &aIndices )
{
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
if (!hwndList)
{
return 0;
}
INT iCount = ListView_GetItemCount(hwndList);
for (INT i=0; i<iCount; i++)
{
if (ListView_GetItemState(hwndList,i,LVIS_SELECTED) & LVIS_SELECTED)
{
aIndices.Append(i);
}
}
return aIndices.Size();
}
/*****************************************************************************
CVideoCaptureDialog::OnPostInit
Handle the post WM_INIT processing that needs to take place.
*****************************************************************************/
LRESULT CVideoCaptureDialog::OnPostInit( WPARAM, LPARAM )
{
//
// Create the progress dialog
//
CComPtr<IWiaProgressDialog> pWiaProgressDialog;
HRESULT hr = CoCreateInstance( CLSID_WiaDefaultUi, NULL, CLSCTX_INPROC_SERVER, IID_IWiaProgressDialog, (void**)&pWiaProgressDialog );
if (SUCCEEDED(hr))
{
//
// Initialize the progress dialog
//
pWiaProgressDialog->Create( m_hWnd, WIA_PROGRESSDLG_ANIM_VIDEO_COMMUNICATE|WIA_PROGRESSDLG_NO_PROGRESS|WIA_PROGRESSDLG_NO_CANCEL|WIA_PROGRESSDLG_NO_TITLE );
pWiaProgressDialog->SetTitle( CSimpleStringConvert::WideString(CSimpleString(IDS_VIDDLG_PROGDLG_TITLE,g_hInstance)));
pWiaProgressDialog->SetMessage( CSimpleStringConvert::WideString(CSimpleString(IDS_VIDDLG_PROGDLG_MESSAGE,g_hInstance)));
//
// Show the progress dialog
//
pWiaProgressDialog->Show();
if (m_pDeviceDialogData && m_pDeviceDialogData->pIWiaItemRoot && m_pWiaVideo)
{
CSimpleString strImagesDirectory;
if (hr == S_OK)
{
BOOL bSuccess = FALSE;
//
// Get the IMAGES_DIRECTORY property from the Wia Video Driver.
//
bSuccess = PropStorageHelpers::GetProperty(m_pDeviceDialogData->pIWiaItemRoot,
WIA_DPV_IMAGES_DIRECTORY,
strImagesDirectory);
if (!bSuccess)
{
hr = E_FAIL;
}
}
if (hr == S_OK)
{
WIAVIDEO_STATE VideoState = WIAVIDEO_NO_VIDEO;
//
// Get the current state of the WiaVideo object. If we just created it
// then the state will be NO_VIDEO, otherwise, it could already be previewing video,
// in which case we shouldn't do anything.
//
hr = m_pWiaVideo->GetCurrentState(&VideoState);
if (VideoState == WIAVIDEO_NO_VIDEO)
{
//
// Set the directory we want to save our images to. We got the image directory
// from the Wia Video Driver IMAGES_DIRECTORY property
//
if (hr == S_OK)
{
hr = m_pWiaVideo->put_ImagesDirectory(CSimpleBStr(strImagesDirectory));
}
//
// Create the video preview as a child of the IDC_VIDSEL_PREVIEW dialog item
// and automatically begin playback after creating the preview.
//
if (hr == S_OK)
{
hr = m_pWiaVideo->CreateVideoByWiaDevID(CSimpleBStr(m_strwDeviceId),
GetDlgItem( m_hWnd, IDC_VIDDLG_PREVIEW ),
FALSE,
TRUE);
}
}
}
if (hr != S_OK)
{
//
// Let the user know that the graph is most likely already
// in use...
//
MessageBox( m_hWnd,
CSimpleString(IDS_VIDDLG_BUSY_TEXT, g_hInstance),
CSimpleString(IDS_VIDDLG_BUSY_TITLE, g_hInstance),
MB_OK | MB_ICONWARNING | MB_SETFOREGROUND
);
//
// Disable the capture button since we have no graph
//
MyEnableWindow( GetDlgItem(m_hWnd,IDC_VIDDLG_CAPTURE), FALSE );
}
}
//
// Go get all the items..
//
EnumerateAllCameraItems();
FindMaximumThumbnailSize();
//
// Initialize Thumbnail Listview control
//
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
if (hwndList)
{
ListView_SetExtendedListViewStyleEx( hwndList,
LVS_EX_BORDERSELECT|LVS_EX_HIDELABELS,
LVS_EX_BORDERSELECT|LVS_EX_HIDELABELS
);
m_hImageList = ImageList_Create( m_sizeThumbnails.cx,
m_sizeThumbnails.cy,
ILC_COLOR24|ILC_MIRROR, 1, 1
);
if (m_hImageList)
{
ListView_SetImageList( hwndList,
m_hImageList,
LVSIL_NORMAL
);
ListView_SetIconSpacing( hwndList,
m_sizeThumbnails.cx + c_nAdditionalMarginX,
m_sizeThumbnails.cy + c_nAdditionalMarginY
);
}
}
CreateThumbnails();
//
// This causes the list to be populated
//
ChangeFolder(NULL);
HandleSelectionChange();
RequestThumbnails( m_CameraItemList.Root() );
//
// Close the progress dialog
//
pWiaProgressDialog->Destroy();
}
return(0);
}
/*****************************************************************************
CVideoCaptureDialog::FindItemInList
<Notes>
*****************************************************************************/
INT CVideoCaptureDialog::FindItemInList( CCameraItem *pItem )
{
if (pItem)
{
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
if (hwndList)
{
for (int i=0;i<ListView_GetItemCount(hwndList);i++)
{
if (pItem == GetListItemNode(i))
{
return i;
}
}
}
}
return -1;
}
/*****************************************************************************
CVideoCaptureDialog::GetListItemNode
<Notes>
*****************************************************************************/
CCameraItem *
CVideoCaptureDialog::GetListItemNode( int nIndex )
{
HWND hwndList = GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST );
if (!hwndList)
{
return NULL;
}
LV_ITEM lvItem;
::ZeroMemory(&lvItem,sizeof(LV_ITEM));
lvItem.mask = LVIF_PARAM;
lvItem.iItem = nIndex;
if (!ListView_GetItem( hwndList, &lvItem ))
{
return NULL ;
}
return((CCameraItem *)lvItem.lParam);
}
/*****************************************************************************
CVideoCaptureDialog::ChangeFolder
Change the current folder being viewed
*****************************************************************************/
BOOL
CVideoCaptureDialog::ChangeFolder( CCameraItem *pNode )
{
CCameraItem *pOldParent = m_pCurrentParentItem;
m_pCurrentParentItem = pNode;
return PopulateList(pOldParent);
}
/*****************************************************************************
CVideoCaptureDialog::OnChangeToParent
<Notes>
*****************************************************************************/
LRESULT
CVideoCaptureDialog::OnChangeToParent( WPARAM, LPARAM )
{
if (m_pCurrentParentItem)
{
ChangeFolder(m_pCurrentParentItem->Parent());
}
return(0);
}
/*****************************************************************************
CVideoCaptureDialog::HandleSelectionChange
<Notes>
*****************************************************************************/
VOID
CVideoCaptureDialog::HandleSelectionChange( VOID )
{
CWaitCursor wc;
INT nSelCount = ListView_GetSelectedCount(GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ) );
INT nItemCount = ListView_GetItemCount(GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ) );
//
// OK should be disabled for 0 items
//
MyEnableWindow( GetDlgItem(m_hWnd,IDOK), nSelCount != 0 );
//
// Select all should be disabled for 0 items
//
MyEnableWindow( GetDlgItem(m_hWnd,IDC_VIDDLG_SELECTALL), nItemCount != 0 );
}
/*****************************************************************************
CVideoCaptureDialog::OnTimer
Handle WM_TIMER messages
*****************************************************************************/
LRESULT
CVideoCaptureDialog::OnTimer( WPARAM wParam, LPARAM )
{
/*
switch (wParam)
{
case IDT_UPDATEPREVIEW:
{
KillTimer( m_hWnd, IDT_UPDATEPREVIEW );
UpdatePreview();
}
break;
}
*/
return(0);
}
/*****************************************************************************
CVideoCaptureDialog::OnNewItemEvent
This gets called when get an event from the driver that a new item has
been created.
*****************************************************************************/
LRESULT
CVideoCaptureDialog::OnNewItemEvent( WPARAM, LPARAM lParam )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnNewItemEvent")));
//
// Make sure we have a valid item name
//
BSTR bstrFullItemName = reinterpret_cast<BSTR>(lParam);
if (!bstrFullItemName)
{
WIA_TRACE((TEXT("bstrFullItemName was NULL")));
return 0;
}
//
// Check to see if the item is already in our list
//
CCameraItem *pListItem = m_CameraItemList.Find(bstrFullItemName);
if (!pListItem)
{
if (m_pDeviceDialogData && m_pDeviceDialogData->pIWiaItemRoot)
{
WIA_TRACE((TEXT("Finding new item in device")));
//
// Get an IWiaItem ptr to new item
//
CComPtr<IWiaItem> pItem;
HRESULT hr = m_pDeviceDialogData->pIWiaItemRoot->FindItemByName(0,bstrFullItemName,&pItem);
WIA_CHECK_HR(hr,"pWiaItemRoot->FindItemByName()");
if (SUCCEEDED(hr) && pItem)
{
//
// Add the item to the list
//
AddItemToListView( pItem );
//
// Make sure we update controls' states
//
HandleSelectionChange();
}
else
{
WIA_ERROR((TEXT("FindItemByName returned NULL pItem")));
}
}
else
{
WIA_ERROR((TEXT("m_pDeviceDialogData or m_pDeviceDialogData->pIWiaItemRoot were NULL")));
}
}
else
{
WIA_TRACE((TEXT("We found the item is already in our list, doing nothing")));
}
//
// Free the item name
//
SysFreeString(bstrFullItemName);
return HANDLED_THREAD_MESSAGE;
}
/*****************************************************************************
CVideoCaptureDialog::OnDeleteItemEvent
This gets called when we get an event from the driver that an item has
been deleted.
*****************************************************************************/
LRESULT
CVideoCaptureDialog::OnDeleteItemEvent( WPARAM, LPARAM lParam )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnDeleteItemEvent")));
CSimpleBStr bstrFullItem = reinterpret_cast<BSTR>(lParam);
SysFreeString( reinterpret_cast<BSTR>(lParam) );
WIA_TRACE((TEXT("The deleted item is %s"),CSimpleStringConvert::NaturalString(CSimpleStringWide(bstrFullItem)).String()));
CCameraItem *pDeletedItem = m_CameraItemList.Find(bstrFullItem);
if (pDeletedItem)
{
//
// If we're deleting the current parent item,
// select a new one.
//
if (pDeletedItem == m_pCurrentParentItem)
{
ChangeFolder(m_pCurrentParentItem->Parent());
}
int nIndex = FindItemInList(pDeletedItem);
if (nIndex >= 0)
{
//
// Remove the item from the listview
//
ListView_DeleteItem(GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ),nIndex);
//
// Make sure we leave something selected
//
if (!ListView_GetSelectedCount(GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST )))
{
int nItemCount = ListView_GetItemCount(GetDlgItem( m_hWnd, IDC_VIDDLG_THUMBNAILLIST ));
if (nItemCount)
{
if (nIndex >= nItemCount)
{
nIndex = nItemCount-1;
}
SetSelectedListItem(nIndex);
}
}
//
// Make sure we update controls' states
//
HandleSelectionChange();
}
else
{
WIA_ERROR((TEXT("FindItemInList coulnd't find the item")));
}
//
// Mark the item as deleted.
//
pDeletedItem->DeleteState( CCameraItem::Delete_Deleted );
}
else
{
WIA_ERROR((TEXT("The item could not be found in m_CameraItemList")));
}
return HANDLED_THREAD_MESSAGE;
}
/*****************************************************************************
CVideoCaptureDialog::OnDeviceDisconnect
This gets called when we get an event from the driver that device has
been disconnected.
*****************************************************************************/
LRESULT
CVideoCaptureDialog::OnDeviceDisconnect( WPARAM, LPARAM )
{
WIA_PUSHFUNCTION((TEXT("CVideoCaptureDialog::OnDeviceDisconnect")));
//
// Close the dialog with the approriate error
//
EndDialog( m_hWnd, WIA_ERROR_OFFLINE );
return 0;
}
/*****************************************************************************
CVideoCaptureDialog::GetGraphWindowHandle
Find the window handle of the video window
*****************************************************************************/
HWND
CVideoCaptureDialog::GetGraphWindowHandle(void)
{
HWND hWndGraphParent = GetDlgItem( m_hWnd, IDC_VIDDLG_PREVIEW );
if (hWndGraphParent)
{
return FindWindowEx( hWndGraphParent, NULL, TEXT("VideoRenderer"), NULL );
}
return NULL;
}
/*****************************************************************************
CCameraAcquireDialog::OnContextMenu
Message handler for WM_HELP message
*****************************************************************************/
LRESULT
CVideoCaptureDialog::OnHelp( WPARAM wParam, LPARAM lParam )
{
HELPINFO *pHelpInfo = reinterpret_cast<HELPINFO*>(lParam);
if (pHelpInfo && HELPINFO_WINDOW==pHelpInfo->iContextType && GetGraphWindowHandle()==pHelpInfo->hItemHandle)
{
pHelpInfo->hItemHandle = GetDlgItem( m_hWnd, IDC_VIDDLG_PREVIEW );
}
return WiaHelp::HandleWmHelp( wParam, lParam, g_HelpIDs );
}
/*****************************************************************************
CCameraAcquireDialog::OnContextMenu
Message handler for right-mouse-button click
*****************************************************************************/
LRESULT
CVideoCaptureDialog::OnContextMenu( WPARAM wParam, LPARAM lParam )
{
if (GetGraphWindowHandle() == reinterpret_cast<HWND>(wParam))
{
wParam = reinterpret_cast<WPARAM>(GetDlgItem( m_hWnd, IDC_VIDDLG_PREVIEW ));
}
return WiaHelp::HandleWmContextMenu( wParam, lParam, g_HelpIDs );
}
/*****************************************************************************
CVideoCaptureDialog::DialogProc
Dialog proc for video capture dialog
*****************************************************************************/
INT_PTR PASCAL CVideoCaptureDialog::DialogProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
SC_BEGIN_DIALOG_MESSAGE_HANDLERS(CVideoCaptureDialog)
{
SC_HANDLE_DIALOG_MESSAGE( WM_INITDIALOG, OnInitDialog );
SC_HANDLE_DIALOG_MESSAGE( WM_SIZE, OnSize );
SC_HANDLE_DIALOG_MESSAGE( WM_COMMAND, OnCommand );
SC_HANDLE_DIALOG_MESSAGE( WM_NOTIFY, OnNotify );
SC_HANDLE_DIALOG_MESSAGE( WM_GETMINMAXINFO, OnGetMinMaxInfo );
SC_HANDLE_DIALOG_MESSAGE( WM_DESTROY, OnDestroy );
SC_HANDLE_DIALOG_MESSAGE( WM_SHOWWINDOW, OnShow );
SC_HANDLE_DIALOG_MESSAGE( WM_TIMER, OnTimer );
SC_HANDLE_DIALOG_MESSAGE( WM_HELP, OnHelp );
SC_HANDLE_DIALOG_MESSAGE( WM_CONTEXTMENU, OnContextMenu );
SC_HANDLE_DIALOG_MESSAGE( PWM_POSTINIT, OnPostInit );
SC_HANDLE_DIALOG_MESSAGE( PWM_CHANGETOPARENT, OnChangeToParent );
SC_HANDLE_DIALOG_MESSAGE( PWM_THUMBNAILSTATUS, OnThumbnailStatus );
SC_HANDLE_DIALOG_MESSAGE( VD_NEW_ITEM, OnNewItemEvent );
SC_HANDLE_DIALOG_MESSAGE( VD_DELETE_ITEM, OnDeleteItemEvent );
SC_HANDLE_DIALOG_MESSAGE( VD_DEVICE_DISCONNECTED, OnDeviceDisconnect );
}
SC_END_DIALOG_MESSAGE_HANDLERS();
}
/*****************************************************************************
CVideoCallback::CVideoCallback
Constructor for class
*****************************************************************************/
CVideoCallback::CVideoCallback()
: m_cRef(1),
m_hWnd(NULL)
{
WIA_PUSHFUNCTION((TEXT("CVideoCallback::CVideoCallback()")));
}
/*****************************************************************************
CVideoCallback::Initialize
Let us set which hwnd to notify when events come
*****************************************************************************/
STDMETHODIMP
CVideoCallback::Initialize( HWND hWnd )
{
WIA_PUSHFUNCTION((TEXT("CVideoCallback::Initialize()")));
m_hWnd = hWnd;
return S_OK;
}
/*****************************************************************************
CVideoCallback::AddRef
Standard COM
*****************************************************************************/
STDMETHODIMP_(ULONG)
CVideoCallback::AddRef( VOID )
{
WIA_PUSHFUNCTION((TEXT("CVideoCallback::AddRef")));
return(InterlockedIncrement(&m_cRef));
}
/*****************************************************************************
CVideoCallback::Release
Standard COM
*****************************************************************************/
STDMETHODIMP_(ULONG)
CVideoCallback::Release( VOID )
{
WIA_PUSHFUNCTION(TEXT("CVideoCallback::Release"));
LONG nRefCount = InterlockedDecrement(&m_cRef);
if (!nRefCount)
{
delete this;
}
return(nRefCount);
}
/*****************************************************************************
CVideoCallback::QueryInterface
Standard COM
*****************************************************************************/
STDMETHODIMP
CVideoCallback::QueryInterface( REFIID riid, LPVOID *ppvObject )
{
WIA_PUSHFUNCTION((TEXT("CVideoCallback::QueryInterface")));
HRESULT hr = S_OK;
if (ppvObject)
{
if (IsEqualIID( riid, IID_IUnknown ))
{
WIA_TRACE((TEXT("Supported RIID asked for was IID_IUnknown")));
*ppvObject = static_cast<IUnknown*>(this);
reinterpret_cast<IUnknown*>(*ppvObject)->AddRef();
}
else if (IsEqualIID( riid, IID_IWiaEventCallback ))
{
WIA_TRACE((TEXT("Supported RIID asked for was IID_IWiaEventCallback")));
*ppvObject = static_cast<IWiaEventCallback*>(this);
reinterpret_cast<IUnknown*>(*ppvObject)->AddRef();
}
else
{
WIA_PRINTGUID((riid,TEXT("Unsupported interface!")));
*ppvObject = NULL;
hr = E_NOINTERFACE;
}
}
else
{
hr = E_INVALIDARG;
}
WIA_RETURN_HR(hr);
}
/*****************************************************************************
CVideoCallback::ImageEventCallback
WIA callback interface for events.
*****************************************************************************/
STDMETHODIMP
CVideoCallback::ImageEventCallback( const GUID *pEventGUID,
BSTR bstrEventDescription,
BSTR bstrDeviceID,
BSTR bstrDeviceDescription,
DWORD dwDeviceType,
BSTR bstrFullItemName,
ULONG *pulEventType,
ULONG ulReserved)
{
WIA_PUSHFUNCTION((TEXT("CVideoCallback::ImageEventCallback")));
HRESULT hr = S_OK;
if (pEventGUID)
{
if (IsEqualGUID( *pEventGUID, WIA_EVENT_ITEM_CREATED ))
{
WIA_TRACE((TEXT("Got WIA_EVENT_ITEM_CREATED")));
BSTR bstrToSend = SysAllocString( bstrFullItemName );
LRESULT lRes = SendMessage( m_hWnd, VD_NEW_ITEM, 0, reinterpret_cast<LPARAM>(bstrToSend) );
if (HANDLED_THREAD_MESSAGE != lRes && bstrToSend)
{
SysFreeString( bstrToSend );
}
}
else if (IsEqualGUID( *pEventGUID, WIA_EVENT_ITEM_DELETED ))
{
WIA_TRACE((TEXT("Got WIA_EVENT_ITEM_DELETED")));
BSTR bstrToSend = SysAllocString( bstrFullItemName );
LRESULT lRes = SendMessage( m_hWnd, VD_DELETE_ITEM, 0, reinterpret_cast<LPARAM>(bstrToSend) );
if (HANDLED_THREAD_MESSAGE != lRes && bstrToSend)
{
SysFreeString( bstrToSend );
}
}
else if (IsEqualGUID( *pEventGUID, WIA_EVENT_DEVICE_DISCONNECTED ))
{
PostMessage( m_hWnd, VD_DEVICE_DISCONNECTED, 0, 0 );
}
else
{
WIA_ERROR((TEXT("Got an event other that what we registered for!")));
}
}
WIA_RETURN_HR(hr);
}