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1459 lines
39 KiB
1459 lines
39 KiB
/*****************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 1998
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*
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* TITLE: preview.cpp
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*
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* VERSION: 1.0
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*
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* AUTHOR: RickTu
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*
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* DATE: 11/02/00
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*
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* DESCRIPTION: Template Preview Window implementation
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*
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*****************************************************************************/
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#include <precomp.h>
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#pragma hdrstop
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/*****************************************************************************
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GetProgressControlRect
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Takes preivew window as an input, returns a rectangle that contains
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the size of the progress control
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*****************************************************************************/
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void GetProgressControlRect( HWND hwnd, RECT * pRect )
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("GetProgressControlRect()")));
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if (pRect)
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{
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if (hwnd)
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{
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RECT rcWnd = {0};
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GetClientRect( hwnd, &rcWnd );
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WIA_TRACE((TEXT("GetProgressControlRect: client rect is %d,%d,%d,%d"),rcWnd.left, rcWnd.top, rcWnd.right, rcWnd.bottom));
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pRect->left = rcWnd.left + ((rcWnd.right - rcWnd.left) / 10);
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pRect->right = rcWnd.right - (pRect->left - rcWnd.left);
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pRect->top = rcWnd.top + ((rcWnd.bottom - rcWnd.top) / 2) + 15;
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//
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// Themes requires that progress bars be at least 10 pix high
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//
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pRect->bottom = pRect->top + 10;
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WIA_TRACE((TEXT("GetProgressControlRect: progress control rect being returned as %d,%d,%d,%d"),pRect->left,pRect->top,pRect->right,pRect->bottom));
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}
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}
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}
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/*****************************************************************************
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CPreviewBitmap constructor/destructor
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*****************************************************************************/
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CPreviewBitmap::CPreviewBitmap( CWizardInfoBlob * pWizInfo, HWND hwnd, INT iTemplateIndex )
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: _hwndPreview(hwnd),
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_iTemplateIndex(iTemplateIndex),
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_hWorkThread(NULL),
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_dwWorkThreadId(0),
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_pWizInfo(pWizInfo),
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_bThreadIsStalled(FALSE)
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW_BITMAP,TEXT("CPreviewBitmap::CPreviewBitmap( %i )"),iTemplateIndex));
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if (_pWizInfo)
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{
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_pWizInfo->AddRef();
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}
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_hEventForMessageQueueCreation = CreateEvent( NULL, FALSE, FALSE, NULL );
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}
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CPreviewBitmap::~CPreviewBitmap()
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW_BITMAP,TEXT("CPreviewBitmap::~CPreviewBitmap( %i )"),_iTemplateIndex));
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CAutoCriticalSection lock(_csItem);
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//
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// Tell thread to exit and then for it to exit...
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//
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if (_hWorkThread && _dwWorkThreadId)
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{
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PostThreadMessage( _dwWorkThreadId, PVB_MSG_EXIT_THREAD, 0, 0 );
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WiaUiUtil::MsgWaitForSingleObject( _hWorkThread, INFINITE );
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CloseHandle( _hWorkThread );
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}
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//
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// Now that the thread is closed (or never created), close the event handle...
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//
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if (_hEventForMessageQueueCreation)
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{
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CloseHandle( _hEventForMessageQueueCreation );
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_hEventForMessageQueueCreation = NULL;
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}
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//
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// Let go of wizard class
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//
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if (_pWizInfo)
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{
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_pWizInfo->Release();
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_pWizInfo = NULL;
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}
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}
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/*****************************************************************************
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CPreviewBitmap::MessageQueueCreated
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Called once message queue is created in thread proc...
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*****************************************************************************/
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VOID CPreviewBitmap::MessageQueueCreated()
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW_BITMAP,TEXT("CPreviewBitmap::MessageQueueCreated( %i )"),_iTemplateIndex));
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if (_hEventForMessageQueueCreation)
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{
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SetEvent(_hEventForMessageQueueCreation);
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}
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}
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/*****************************************************************************
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CPreivewBitmap::GetPreview
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Called by preview window to have us post the preview bitmap back to them...
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*****************************************************************************/
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HRESULT CPreviewBitmap::GetPreview()
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW_BITMAP,TEXT("CPreviewBitmap::GetPreview( %i )"),_iTemplateIndex));
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HRESULT hr = S_OK;
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//
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// First, see if our thread is already running...
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//
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CAutoCriticalSection lock(_csItem);
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if (_pWizInfo && (!_bThreadIsStalled))
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{
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if (!_pWizInfo->IsWizardShuttingDown())
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{
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if (!_hWorkThread)
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{
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_hWorkThread = CreateThread( NULL, 0, s_PreviewBitmapWorkerThread, (LPVOID)this, CREATE_SUSPENDED, &_dwWorkThreadId );
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if (_hWorkThread)
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{
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//
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// If we created the thread, set it's priority to slight below normal so other
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// things run okay. This can be a CPU intensive task...
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//
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SetThreadPriority( _hWorkThread, THREAD_PRIORITY_BELOW_NORMAL );
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ResumeThread( _hWorkThread );
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//
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// Wait for message queue to be created...
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//
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if (_hEventForMessageQueueCreation)
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{
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WaitForSingleObject( _hEventForMessageQueueCreation, INFINITE );
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}
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}
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else
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{
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WIA_ERROR((TEXT("GetPreview: CreateThread failed w/GLE=%d"),GetLastError()));
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hr = E_OUTOFMEMORY;
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}
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}
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}
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}
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//
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// If we have the thread, then tell it to generate a new preview...
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//
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if (SUCCEEDED(hr) && _hWorkThread && _dwWorkThreadId)
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{
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PostThreadMessage( _dwWorkThreadId, PVB_MSG_GENERATE_PREVIEW, 0, 0 );
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}
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WIA_RETURN_HR(hr);
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}
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/*****************************************************************************
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CPreviewBitmap::GeneratePreview
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This function is called by the worker thread to generate a new
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preview for this template...
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*****************************************************************************/
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VOID CPreviewBitmap::GeneratePreview()
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW_BITMAP,TEXT("CPreviewBitmap::GeneratePreview( %i )"),_iTemplateIndex));
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//
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// we always generate a new bitmap here, because we only get called if
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// the preview window doesn't have a bitmap for this template yet or
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// if something has caused the previews to become invalid...
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//
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if (_pWizInfo && (!_pWizInfo->IsWizardShuttingDown()) && (!_bThreadIsStalled))
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{
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HBITMAP bmp = _pWizInfo->RenderPreview( _iTemplateIndex, _hwndPreview );
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if (bmp)
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{
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//
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// We use sendmessage here to make sure this bitmap doesn't get
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// lost in transit.
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//
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LRESULT lRes = -1;
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if (!_pWizInfo->IsWizardShuttingDown() && (!_bThreadIsStalled))
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{
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lRes = SendMessage( _hwndPreview, PV_MSG_PREVIEW_BITMAP_AVAILABLE, (WPARAM)_iTemplateIndex, (LPARAM)bmp );
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}
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if ((lRes == -1) || (lRes == 0))
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{
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//
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// For some reason, there was an error. So clean up by deleting
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// the bitmap here...
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//
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WIA_ERROR((TEXT("CPreviewBitmap::GeneratePreview - SendMessage returned error, deleting bitmap!")));
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DeleteObject( (HGDIOBJ)bmp );
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}
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}
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else
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{
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WIA_ERROR((TEXT("CPreviewBitmap::GeneratePreview - RenderPreview returned null bmp!")));
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}
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}
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}
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/*****************************************************************************
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CPreviewBitmap::StallThread
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Terminate the background thread (gracefully) and don't allow it
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to start again until RestartThread is called...
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*****************************************************************************/
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VOID CPreviewBitmap::StallThread()
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{
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CAutoCriticalSection lock(_csItem);
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_bThreadIsStalled = TRUE;
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if (_hWorkThread && _dwWorkThreadId)
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{
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PostThreadMessage( _dwWorkThreadId, PVB_MSG_EXIT_THREAD, 0, 0 );
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WiaUiUtil::MsgWaitForSingleObject( _hWorkThread, INFINITE );
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CloseHandle( _hWorkThread );
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_hWorkThread = NULL;
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_dwWorkThreadId = 0;
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}
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}
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/*****************************************************************************
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CPreviewBitmap::RestartThread
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Allow background thread to be started up again...
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*****************************************************************************/
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VOID CPreviewBitmap::RestartThread()
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{
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CAutoCriticalSection lock(_csItem);
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_bThreadIsStalled = FALSE;
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}
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/*****************************************************************************
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CPreviewBitmap::s_PreviewBitmapWorkerThread
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Thread proc that does all the work of generating the bitmaps
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*****************************************************************************/
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DWORD CPreviewBitmap::s_PreviewBitmapWorkerThread(void *pv)
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{
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CPreviewBitmap * pPB = (CPreviewBitmap *)pv;
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if (pPB)
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{
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//
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// Add-ref the DLL so that it doesn't get unloaded while we're running...
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//
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HMODULE hDll = GetThreadHMODULE( s_PreviewBitmapWorkerThread );
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//
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// Make sure COM is initialized for this thread...
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//
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HRESULT hrCo = PPWCoInitialize();
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//
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// Create the message queue...
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//
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MSG msg;
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PeekMessage( &msg, NULL, WM_USER, WM_USER, PM_NOREMOVE );
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//
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// Signal that we're ready to receive messages...
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//
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pPB->MessageQueueCreated();
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//
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// Loop until we get message to quit...
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//
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BOOL bExit = FALSE;
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while ((!bExit) && (-1!=GetMessage( &msg, NULL, PVB_MSG_START, PVB_MSG_END )))
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{
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switch (msg.message)
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{
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case PVB_MSG_GENERATE_PREVIEW:
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pPB->GeneratePreview();
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break;
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case PVB_MSG_EXIT_THREAD:
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bExit = TRUE;
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break;
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}
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}
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//
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// Unitialize COM if we initialized it earlier...
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//
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PPWCoUninitialize( hrCo );
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//
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// Remove our reference on the DLL and exit...
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//
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if (hDll)
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{
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WIA_TRACE((TEXT("Exiting preview bitmap worker thread via FLAET...")));
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FreeLibraryAndExitThread( hDll, 0 );
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}
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}
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WIA_TRACE((TEXT("Exiting preview bitmap worker thread via error path...")));
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return 0;
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}
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/*****************************************************************************
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CPreviewWindow contructor/desctructor
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<Notes>
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*****************************************************************************/
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CPreviewWindow::CPreviewWindow( CWizardInfoBlob * pWizInfo )
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: _pWizInfo(pWizInfo),
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_LastTemplate(PV_NO_LAST_TEMPLATE_CHOSEN),
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_NumTemplates(0),
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_hwnd(NULL),
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_hwndProgress(NULL),
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_hPreviewList(NULL),
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_hStillWorkingBitmap(NULL),
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_bThreadsAreStalled(FALSE)
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::CPreviewWindow")));
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if (_pWizInfo)
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{
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_pWizInfo->AddRef();
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}
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}
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CPreviewWindow::~CPreviewWindow()
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::~CPreviewWindow")));
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//
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// Make sure we clear out any remaining background info...
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//
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ShutDownBackgroundThreads();
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//
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// Kill the progress window if it exists...
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//
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if (_hwndProgress)
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{
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DestroyWindow( _hwndProgress );
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_hwndProgress = NULL;
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}
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//
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// Tear down whatever is remaining...
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//
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if (_hStillWorkingBitmap)
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{
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DeleteObject( (HGDIOBJ)_hStillWorkingBitmap );
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}
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if (_pWizInfo)
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{
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_pWizInfo->Release();
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}
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}
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/*****************************************************************************
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CPreviewWindow::StallBackgroundThreads()
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Tell the preview generation threads to stall out while
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the number of copies is changed. The threads will stay
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stalled until a call to CPreviewWindow::RestartBackgroundThreads()
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is made...
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*****************************************************************************/
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VOID CPreviewWindow::StallBackgroundThreads()
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::StallBackgroundThreads()")));
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CAutoCriticalSection lock(_csList);
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_bThreadsAreStalled = TRUE;
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if (_hPreviewList)
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{
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for (INT i=0; i < _NumTemplates; i++)
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{
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//
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// Stall the thread...
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//
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if (_hPreviewList[i].pPreviewBitmap)
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{
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_hPreviewList[i].pPreviewBitmap->StallThread();
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}
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//
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// Invalidate current bitmaps...
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//
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_hPreviewList[i].bValid = FALSE;
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_hPreviewList[i].bBitmapGenerationInProgress = FALSE;
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if (_hPreviewList[i].hPrevBmp)
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{
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DeleteObject( (HGDIOBJ)_hPreviewList[i].hPrevBmp );
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_hPreviewList[i].hPrevBmp = NULL;
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}
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}
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}
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}
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/*****************************************************************************
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CPreviewWindow::RestartBackgroundThreads
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Tell the preview generation threads to start back up again...
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*****************************************************************************/
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VOID CPreviewWindow::RestartBackgroundThreads()
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::RestartBackgroundThreads()")));
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CAutoCriticalSection lock(_csList);
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if (_hPreviewList)
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{
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for (INT i=0; i < _NumTemplates; i++)
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{
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if (_hPreviewList[i].pPreviewBitmap)
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{
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_hPreviewList[i].pPreviewBitmap->RestartThread();
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}
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}
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}
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_bThreadsAreStalled = FALSE;
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//
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// Redraw currently selected template...
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//
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if (_LastTemplate != PV_NO_LAST_TEMPLATE_CHOSEN)
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{
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PostMessage( _hwnd, PV_MSG_GENERATE_NEW_PREVIEW, _LastTemplate, 0 );
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}
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//
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// Tell the user we're working on a preview for them...
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//
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if (_hStillWorkingBitmap)
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{
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DrawBitmap( _hStillWorkingBitmap, NULL );
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}
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}
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/*****************************************************************************
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CPreivewWindow::ShutDownBackgroundThread()
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Terminates the background threads and waits until they are gone...
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*****************************************************************************/
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VOID CPreviewWindow::ShutDownBackgroundThreads()
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{
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WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::ShutDownBackgroundThreads()")));
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|
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//
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// Let's tear down the background threads...
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//
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_csList.Enter();
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if (_hPreviewList)
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{
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for (INT i = 0; i < _NumTemplates; i++)
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{
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if (_hPreviewList[i].hPrevBmp)
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{
|
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DeleteObject( (HGDIOBJ)_hPreviewList[i].hPrevBmp );
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_hPreviewList[i].hPrevBmp = NULL;
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}
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|
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if (_hPreviewList[i].pPreviewBitmap)
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{
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delete _hPreviewList[i].pPreviewBitmap;
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_hPreviewList[i].pPreviewBitmap = NULL;
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}
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}
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delete [] _hPreviewList;
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_hPreviewList = NULL;
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}
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_csList.Leave();
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|
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//
|
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// Notify wizard that we've shut down
|
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//
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if (_pWizInfo)
|
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{
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_pWizInfo->PreviewIsShutDown();
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}
|
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}
|
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|
|
/*****************************************************************************
|
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|
|
CPreviewWindow::InitList
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|
|
If not already done, initialize the bitmap list for the window...
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|
|
*****************************************************************************/
|
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|
|
VOID CPreviewWindow::_InitList()
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::_InitList()")));
|
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|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
if (_pWizInfo && (!_pWizInfo->IsWizardShuttingDown()))
|
|
{
|
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if (!_hPreviewList)
|
|
{
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|
|
//
|
|
// Create a list for holding the hBitmap previews...
|
|
//
|
|
|
|
if (_pWizInfo)
|
|
{
|
|
_NumTemplates = _pWizInfo->CountOfTemplates();
|
|
|
|
_hPreviewList = new PREVIEW_STATE [_NumTemplates];
|
|
|
|
if (_hPreviewList)
|
|
{
|
|
//
|
|
// Pre-initialize each entry
|
|
//
|
|
|
|
for (INT i = 0; i < _NumTemplates; i++)
|
|
{
|
|
_hPreviewList[i].hPrevBmp = NULL;
|
|
_hPreviewList[i].bValid = FALSE;
|
|
_hPreviewList[i].bBitmapGenerationInProgress = FALSE;
|
|
_hPreviewList[i].pPreviewBitmap = new CPreviewBitmap( _pWizInfo, _hwnd, i );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::InvalidateAllPreviews
|
|
|
|
Marks all the previews as invalid -- must be re-computed
|
|
|
|
*****************************************************************************/
|
|
|
|
VOID CPreviewWindow::InvalidateAllPreviews()
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::InvalidateAllPreviews()")));
|
|
|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
if (_hPreviewList)
|
|
{
|
|
for (INT i = 0; i < _NumTemplates; i++)
|
|
{
|
|
_hPreviewList[i].bValid = FALSE;
|
|
_hPreviewList[i].bBitmapGenerationInProgress = FALSE;
|
|
if (_hPreviewList[i].hPrevBmp)
|
|
{
|
|
DeleteObject( (HGDIOBJ)_hPreviewList[i].hPrevBmp );
|
|
_hPreviewList[i].hPrevBmp = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_hStillWorkingBitmap)
|
|
{
|
|
DeleteObject(_hStillWorkingBitmap);
|
|
_hStillWorkingBitmap = NULL;
|
|
}
|
|
|
|
}
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::DrawBitmap
|
|
|
|
<Notes>
|
|
|
|
*****************************************************************************/
|
|
|
|
VOID CPreviewWindow::DrawBitmap( HBITMAP hBitmap, HDC hdc )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::DrawBitmap()")));
|
|
|
|
//
|
|
// Don't bother painting the bitmap if we don't have an image.
|
|
//
|
|
|
|
if (!hBitmap)
|
|
return;
|
|
|
|
Gdiplus::Bitmap bmp( hBitmap, NULL );
|
|
|
|
if (Gdiplus::Ok == bmp.GetLastStatus())
|
|
{
|
|
Gdiplus::Graphics * g;
|
|
|
|
if (hdc)
|
|
g = Gdiplus::Graphics::FromHDC( hdc );
|
|
else
|
|
g = Gdiplus::Graphics::FromHWND( _hwnd );
|
|
|
|
if (g && (Gdiplus::Ok == g->GetLastStatus()))
|
|
{
|
|
g->DrawImage( &bmp, 0, 0 );
|
|
|
|
if (Gdiplus::Ok != g->GetLastStatus())
|
|
{
|
|
WIA_ERROR((TEXT("DrawBitmap: g->DrawImage call failed, Status = %d"),g->GetLastStatus()));
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("DrawBitmap: couldn't create GDI+ Graphics from Bitmap")));
|
|
}
|
|
|
|
if (g)
|
|
{
|
|
delete g;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::ShowStillWorking
|
|
|
|
Shows the "generating a preview" message...
|
|
|
|
*****************************************************************************/
|
|
|
|
VOID CPreviewWindow::ShowStillWorking( HWND hwnd )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::ShowStillWorking()")));
|
|
|
|
if (_pWizInfo && (!_pWizInfo->IsWizardShuttingDown()))
|
|
{
|
|
|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
//
|
|
// Get size of preview window
|
|
//
|
|
|
|
RECT rcWnd = {0};
|
|
GetClientRect( hwnd, &rcWnd );
|
|
Gdiplus::RectF rectWindow( 0.0, 0.0, (Gdiplus::REAL)(rcWnd.right - rcWnd.left), (Gdiplus::REAL)(rcWnd.bottom - rcWnd.top) );
|
|
|
|
//
|
|
// Clear out window...
|
|
//
|
|
|
|
Gdiplus::Graphics g( hwnd );
|
|
if (Gdiplus::Ok == g.GetLastStatus())
|
|
{
|
|
//
|
|
// First, draw bounding rectangle
|
|
//
|
|
|
|
g.SetPageUnit( Gdiplus::UnitPixel );
|
|
g.SetPageScale( 1.0 );
|
|
|
|
DWORD dw = GetSysColor( COLOR_BTNFACE );
|
|
|
|
Gdiplus::Color wndClr(255,GetRValue(dw),GetGValue(dw),GetBValue(dw));
|
|
Gdiplus::SolidBrush br(wndClr);
|
|
|
|
//
|
|
// Clear out the contents
|
|
//
|
|
|
|
g.FillRectangle( &br, rectWindow );
|
|
|
|
//
|
|
// Frame the rectangle
|
|
//
|
|
|
|
rectWindow.Inflate( -1, -1 );
|
|
Gdiplus::Color black(255,0,0,0);
|
|
Gdiplus::SolidBrush BlackBrush( black );
|
|
Gdiplus::Pen BlackPen( &BlackBrush, (Gdiplus::REAL)1.0 );
|
|
g.DrawRectangle( &BlackPen, rectWindow );
|
|
|
|
//
|
|
// Draw text about generating preview...
|
|
//
|
|
|
|
CSimpleString strText(IDS_DOWNLOADINGTHUMBNAIL, g_hInst);
|
|
Gdiplus::StringFormat DefaultStringFormat;
|
|
Gdiplus::Font Verdana( TEXT("Verdana"), 8.0 );
|
|
|
|
Gdiplus::REAL FontH = (Gdiplus::REAL)Verdana.GetHeight( &g );
|
|
rectWindow.Y += ((rectWindow.Height - FontH) / (Gdiplus::REAL)2.0);
|
|
rectWindow.Height = FontH;
|
|
|
|
DefaultStringFormat.SetAlignment(Gdiplus::StringAlignmentCenter);
|
|
|
|
g.DrawString( strText, strText.Length(), &Verdana, rectWindow, &DefaultStringFormat, &BlackBrush );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::GenerateWorkingBitmap
|
|
|
|
Creates the "generating a preview" bitmap...
|
|
|
|
*****************************************************************************/
|
|
|
|
VOID CPreviewWindow::GenerateWorkingBitmap( HWND hwnd )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::GenerateWorkingBitmap()")));
|
|
|
|
if (_pWizInfo && (!_pWizInfo->IsWizardShuttingDown()))
|
|
{
|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
//
|
|
// Do we need to generate a new one...?
|
|
//
|
|
|
|
if (!_hStillWorkingBitmap)
|
|
{
|
|
|
|
//
|
|
// Get size of preview window
|
|
//
|
|
|
|
RECT rcWnd = {0};
|
|
GetClientRect( hwnd, &rcWnd );
|
|
Gdiplus::RectF rectWindow( 0.0, 0.0, (Gdiplus::REAL)(rcWnd.right - rcWnd.left), (Gdiplus::REAL)(rcWnd.bottom - rcWnd.top) );
|
|
WIA_TRACE((TEXT("GenerateWorkingBitmap: rectWindow is (%d,%d) @ (%d,%d)"),(INT)rectWindow.Width, (INT)rectWindow.Height, (INT)rectWindow.X, (INT)rectWindow.Y));
|
|
|
|
//
|
|
// Size progress control
|
|
//
|
|
|
|
if (_hwndProgress)
|
|
{
|
|
RECT rcProgress = {0};
|
|
GetProgressControlRect( hwnd, &rcProgress );
|
|
|
|
MoveWindow( _hwndProgress,
|
|
rcProgress.left,
|
|
rcProgress.top,
|
|
(rcProgress.right - rcProgress.left),
|
|
(rcProgress.bottom - rcProgress.top),
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
//
|
|
// Allocate memory for bitmap
|
|
//
|
|
|
|
INT stride = ((INT)rectWindow.Width * sizeof(long));
|
|
if ( (stride % 4) != 0)
|
|
{
|
|
stride += (4 - (stride % 4));
|
|
}
|
|
|
|
BYTE * data = new BYTE[ stride * (INT)rectWindow.Height ];
|
|
|
|
if (data)
|
|
{
|
|
memset( data, 0, stride * (INT)rectWindow.Height );
|
|
Gdiplus::Bitmap bmp( (INT)rectWindow.Width, (INT)rectWindow.Height, stride, PixelFormat32bppRGB, data );
|
|
|
|
if (Gdiplus::Ok == bmp.GetLastStatus())
|
|
{
|
|
//
|
|
// Draw a rectangle, 1 pixel wide, around the outside
|
|
// with an interior that is white
|
|
//
|
|
|
|
Gdiplus::Graphics g( &bmp );
|
|
|
|
if (Gdiplus::Ok == g.GetLastStatus())
|
|
{
|
|
|
|
//
|
|
// First, draw bounding rectangle
|
|
//
|
|
|
|
g.SetPageUnit( Gdiplus::UnitPixel );
|
|
g.SetPageScale( 1.0 );
|
|
|
|
DWORD dw = GetSysColor( COLOR_BTNFACE );
|
|
|
|
Gdiplus::Color wndClr(255,GetRValue(dw),GetGValue(dw),GetBValue(dw));
|
|
Gdiplus::SolidBrush br(wndClr);
|
|
|
|
//
|
|
// Clear out the contents
|
|
//
|
|
|
|
g.FillRectangle( &br, rectWindow );
|
|
|
|
//
|
|
// Frame the rectangle
|
|
//
|
|
|
|
rectWindow.Inflate( -1, -1 );
|
|
Gdiplus::Color black(255,0,0,0);
|
|
Gdiplus::SolidBrush BlackBrush( black );
|
|
Gdiplus::Pen BlackPen( &BlackBrush, (Gdiplus::REAL)1.0 );
|
|
g.DrawRectangle( &BlackPen, rectWindow );
|
|
|
|
//
|
|
// Draw text about generating preview...
|
|
//
|
|
|
|
CSimpleString strText(IDS_DOWNLOADINGTHUMBNAIL, g_hInst);
|
|
Gdiplus::StringFormat DefaultStringFormat;
|
|
Gdiplus::Font Verdana( TEXT("Verdana"), 8.0 );
|
|
|
|
Gdiplus::REAL FontH = (Gdiplus::REAL)Verdana.GetHeight( &g );
|
|
rectWindow.Y += ((rectWindow.Height - FontH) / (Gdiplus::REAL)2.0);
|
|
rectWindow.Height = FontH;
|
|
|
|
DefaultStringFormat.SetAlignment(Gdiplus::StringAlignmentCenter);
|
|
|
|
g.DrawString( strText, strText.Length(), &Verdana, rectWindow, &DefaultStringFormat, &BlackBrush );
|
|
|
|
|
|
//
|
|
// Get the HBITMAP to return...
|
|
//
|
|
|
|
|
|
bmp.GetHBITMAP( wndClr, &_hStillWorkingBitmap );
|
|
|
|
WIA_TRACE((TEXT("GenerateWorkingBitmap: created _hStillWorkingBitmap as 0x%x"),_hStillWorkingBitmap));
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("GenerateWorkingBitmap: couldn't get graphics from bitmap")));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("GenerateWorkingBitmap: couldn't create bitmap")));
|
|
}
|
|
|
|
delete [] data;
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("GenerateWorkingBitmap: couldn't allocate data for bitmap")));
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
WIA_TRACE((TEXT("GenerateWorkingBitmap: _hStillWorkingBitmap is already valid, not generating a new one...")));
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("GenerateWorkingBitmap: _pWizInfo is NULL or wizard is shutting down, NOT generating bitmap...")));
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::GenerateNewPreview
|
|
|
|
Generates a new preview bitmap for the given template on a background thread.
|
|
|
|
*****************************************************************************/
|
|
|
|
VOID CPreviewWindow::GenerateNewPreview( INT iTemplate )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::GenerateNewPreview( iTemplate = %d )"),iTemplate));
|
|
|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
if (_pWizInfo && (!_pWizInfo->IsWizardShuttingDown()))
|
|
{
|
|
//
|
|
// If we're not already generating a preview for this item, then queue
|
|
// up a request for a new preview...
|
|
//
|
|
|
|
if (_hPreviewList)
|
|
{
|
|
if (iTemplate < _NumTemplates)
|
|
{
|
|
if (!_hPreviewList[iTemplate].bBitmapGenerationInProgress)
|
|
{
|
|
if (_hPreviewList[iTemplate].pPreviewBitmap)
|
|
{
|
|
_hPreviewList[iTemplate].bBitmapGenerationInProgress = TRUE;
|
|
_hPreviewList[iTemplate].pPreviewBitmap->GetPreview();
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("GenerateNewPreview: iTemplate >= _NumTemplates!")));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("GenerateNewPreview: _hPreviewList is NULL!")));
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::GetPreviewBitmap
|
|
|
|
Retrieves current preview bitmap if there is a valid one already
|
|
computed. Otherwise, returns NULL.
|
|
|
|
*****************************************************************************/
|
|
|
|
HBITMAP CPreviewWindow::GetPreviewBitmap( INT iTemplate )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::GetPreviewBitmap( iTemplate = %d )"),iTemplate));
|
|
|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
if (_hPreviewList)
|
|
{
|
|
if (iTemplate < _NumTemplates)
|
|
{
|
|
if (_hPreviewList[iTemplate].bValid)
|
|
{
|
|
return _hPreviewList[iTemplate].hPrevBmp;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("GetPreviewBitmap: iTemplate >= _NumTemplates!")));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("GetPreviewBitmap: _hPreviewList is NULL!")));
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::OnSetNewTemplate
|
|
|
|
wParam holds index of new template to do preview for
|
|
|
|
*****************************************************************************/
|
|
|
|
LRESULT CPreviewWindow::OnSetNewTemplate( WPARAM wParam, HDC hdc )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::OnSetNewTemplate( wParam = %d )"),wParam));
|
|
|
|
//
|
|
// Make sure have an bitmap list to work with
|
|
//
|
|
|
|
_InitList();
|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
//
|
|
// Get hBitmap of preview...
|
|
//
|
|
|
|
if (((INT)wParam < _NumTemplates) && _hPreviewList)
|
|
{
|
|
_LastTemplate = (INT)wParam;
|
|
|
|
if (_LastTemplate != PV_NO_LAST_TEMPLATE_CHOSEN)
|
|
{
|
|
HBITMAP hBmp = GetPreviewBitmap( (INT)wParam );
|
|
|
|
if (hBmp)
|
|
{
|
|
//
|
|
// Turn off the progress meter
|
|
//
|
|
|
|
if (_hwndProgress)
|
|
{
|
|
WIA_TRACE((TEXT("CPreviewWindow::OnSetNewTemplate - setting progress window to SW_HIDE")));
|
|
ShowWindow( _hwndProgress, SW_HIDE );
|
|
}
|
|
|
|
WIA_TRACE((TEXT("CPreviewWindow::OnSetNewTemplate - preview is available, drawing it...")));
|
|
DrawBitmap( hBmp, hdc );
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// no preview bitmap exists for this item
|
|
// so, queue one up to be made...
|
|
|
|
WIA_TRACE((TEXT("CPreviewWindow::OnSetNewTemplate - preview is not available, requesting it...")));
|
|
PostMessage( _hwnd, PV_MSG_GENERATE_NEW_PREVIEW, wParam, 0 );
|
|
|
|
//
|
|
// Tell the user we're working on a preview for them...
|
|
//
|
|
|
|
if (_hStillWorkingBitmap)
|
|
{
|
|
WIA_TRACE((TEXT("CPreviewWindow::OnSetNewTemplate - still working bitmap is available, drawing it...")));
|
|
DrawBitmap( _hStillWorkingBitmap, hdc );
|
|
|
|
//
|
|
// Show the progress meter...
|
|
//
|
|
|
|
if (_hwndProgress)
|
|
{
|
|
WIA_TRACE((TEXT("CPreviewWindow::OnSetNewTemplate - setting progress window to SW_SHOW")));
|
|
ShowWindow( _hwndProgress, SW_SHOW );
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("CPreviewWindow::OnSetNewTemplate - still working bitmap is NOT available, showing nothing!")));
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("CPreviewWindow::OnSetNewTemplate - called to show template -1!")));
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("either bad index or _hPreviewList doesn't exist!")));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::_OnPaint
|
|
|
|
Handle WM_PAINT for our preview window
|
|
|
|
*****************************************************************************/
|
|
|
|
LRESULT CPreviewWindow::_OnPaint()
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::_OnPaint()")));
|
|
|
|
if (GetUpdateRect( _hwnd, NULL, FALSE ))
|
|
{
|
|
PAINTSTRUCT ps = {0};
|
|
|
|
HDC hdcPaint = BeginPaint( _hwnd, &ps );
|
|
|
|
if (_LastTemplate != PV_NO_LAST_TEMPLATE_CHOSEN)
|
|
{
|
|
OnSetNewTemplate( _LastTemplate, hdcPaint );
|
|
}
|
|
|
|
EndPaint( _hwnd, &ps );
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow:_OnSize
|
|
|
|
Handles WM_SIZE
|
|
|
|
*****************************************************************************/
|
|
|
|
LRESULT CPreviewWindow::_OnSize( WPARAM wParam, LPARAM lParam )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::_OnSize( new size is %d by %d )"),LOWORD(lParam),HIWORD(lParam)));
|
|
|
|
//
|
|
// If the size changes, we need to invalidate the "Generating preview"
|
|
// bitmap...
|
|
//
|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
if (_hStillWorkingBitmap)
|
|
{
|
|
WIA_TRACE((TEXT("CPreviewWindow::_OnSize - deleting _hStillWorkingBitmap")));
|
|
DeleteObject(_hStillWorkingBitmap);
|
|
_hStillWorkingBitmap = NULL;
|
|
}
|
|
|
|
//
|
|
// If we have the progress control, resize it...
|
|
//
|
|
|
|
if (_hwndProgress)
|
|
{
|
|
RECT rc = {0};
|
|
|
|
GetProgressControlRect( _hwnd, &rc );
|
|
|
|
WIA_TRACE((TEXT("CPreviewWindow::_OnSize - calling MoveWindow( _hwndProgress, %d, %d, %d, %d, TRUE )"),rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top ));
|
|
MoveWindow( _hwndProgress,
|
|
rc.left,
|
|
rc.top,
|
|
rc.right - rc.left,
|
|
rc.bottom - rc.top,
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::_OnNewPreviewAvailable
|
|
|
|
This is called when the CPreviewBitmap class has rendered a new
|
|
preview and wants us to update...
|
|
|
|
We must return TRUE if we handle the message and everything went okay.
|
|
|
|
wParam = index of template
|
|
lParam = HBITMAP of preview. Note, we now own this.
|
|
|
|
*****************************************************************************/
|
|
|
|
LRESULT CPreviewWindow::_OnNewPreviewAvailable( WPARAM wParam, LPARAM lParam )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_PREVIEW,TEXT("CPreviewWindow::_OnNewPreviewAvailable( %i )"),wParam));
|
|
|
|
LRESULT lRes = -1;
|
|
|
|
CAutoCriticalSection lock(_csList);
|
|
|
|
if (_hPreviewList)
|
|
{
|
|
if ((INT)wParam < _NumTemplates)
|
|
{
|
|
if (!_hPreviewList[wParam].bValid)
|
|
{
|
|
if (_hPreviewList[wParam].bBitmapGenerationInProgress)
|
|
{
|
|
//
|
|
// We're expecting this bitmap!
|
|
//
|
|
|
|
if (lParam)
|
|
{
|
|
if (_hPreviewList[wParam].hPrevBmp)
|
|
{
|
|
DeleteObject( (HGDIOBJ)_hPreviewList[wParam].hPrevBmp );
|
|
}
|
|
|
|
_hPreviewList[wParam].hPrevBmp = (HBITMAP)lParam;
|
|
_hPreviewList[wParam].bValid = TRUE;
|
|
_hPreviewList[wParam].bBitmapGenerationInProgress = FALSE;
|
|
lRes = 1;
|
|
|
|
//
|
|
// Do we need to draw this new bitmap?
|
|
//
|
|
|
|
if (_LastTemplate == (INT)wParam)
|
|
{
|
|
//
|
|
// Turn off the progress meter
|
|
//
|
|
|
|
if (_hwndProgress)
|
|
{
|
|
WIA_TRACE((TEXT("CPreviewWindow::_OnNewPreviewAvailable - setting progress window to SW_HIDE")));
|
|
ShowWindow( _hwndProgress, SW_HIDE );
|
|
}
|
|
|
|
//
|
|
// Draw new template...
|
|
//
|
|
|
|
DrawBitmap( _hPreviewList[wParam].hPrevBmp );
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// Looks like the preview was invalidated! So, dump this
|
|
// bitmap -- this should happen automatically by returning
|
|
// an error code...
|
|
//
|
|
|
|
WIA_TRACE((TEXT("_OnNewPreviewAvailable: Dumping bitmap because bBitmapGenerationInProgress was false")));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("_OnNewPreviewAvailable: Template bitmap is already valid?")));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("_OnNewPreviewAvailable: bad template index!")));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIA_ERROR((TEXT("_OnNewPreviewAvailable: There's no _hPreviewList!")));
|
|
}
|
|
|
|
return lRes;
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
CPreviewWindow::DoHandleMessage
|
|
|
|
Handles incoming window messages
|
|
|
|
*****************************************************************************/
|
|
|
|
LRESULT CPreviewWindow::DoHandleMessage( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
|
|
{
|
|
WIA_PUSH_FUNCTION_MASK((TRACE_DLGPROC, TEXT("CPreviewWindow::DoHandleMessage( 0x%x, 0x%x, 0x%x, 0x%x )"),hwnd,uMsg,wParam,lParam));
|
|
|
|
switch (uMsg)
|
|
{
|
|
case WM_NCCREATE:
|
|
return TRUE;
|
|
|
|
case WM_CREATE:
|
|
{
|
|
_hwnd = hwnd;
|
|
_InitList();
|
|
|
|
RECT rc = {0};
|
|
GetProgressControlRect( hwnd, &rc );
|
|
|
|
//
|
|
// Create progress bar, initially hidden
|
|
//
|
|
|
|
_hwndProgress = CreateWindow( PROGRESS_CLASS,
|
|
TEXT(""),
|
|
WS_CHILD|PBS_MARQUEE,
|
|
rc.left,
|
|
rc.top,
|
|
rc.right - rc.left,
|
|
rc.bottom - rc.top,
|
|
hwnd,
|
|
reinterpret_cast<HMENU>(IDC_PREVIEW_PROGRESS),
|
|
NULL,
|
|
NULL
|
|
);
|
|
|
|
if (_hwndProgress)
|
|
{
|
|
//
|
|
// Put it in marquee mode
|
|
//
|
|
|
|
SendMessage( _hwndProgress, PBM_SETMARQUEE, TRUE, 100 );
|
|
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
case WM_PAINT:
|
|
return _OnPaint();
|
|
|
|
case WM_SIZE:
|
|
return _OnSize( wParam, lParam );
|
|
|
|
|
|
case PW_SETNEWTEMPLATE:
|
|
if (_LastTemplate == (INT)wParam)
|
|
{
|
|
if (_hPreviewList)
|
|
{
|
|
if (_hPreviewList[wParam].bValid)
|
|
{
|
|
//
|
|
// Don't need to draw again, so return...
|
|
//
|
|
|
|
return 0;
|
|
|
|
}
|
|
}
|
|
}
|
|
return OnSetNewTemplate( wParam );
|
|
|
|
case PV_MSG_GENERATE_NEW_PREVIEW:
|
|
GenerateNewPreview( (INT)wParam );
|
|
return 0;
|
|
|
|
case PV_MSG_PREVIEW_BITMAP_AVAILABLE:
|
|
return _OnNewPreviewAvailable( wParam, lParam );
|
|
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|