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moviectl.cpp
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C/C++ Source or Header
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1998-03-26
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// MovieCtl.cpp : Implementation of CMovieCtl
//
// This is a part of the Active Template Library.
// Copyright (C) 1996-1998 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Active Template Library Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Active Template Library product.
#include "stdafx.h"
#include "ATLMovie.h"
#include "MovieCtl.h"
/////////////////////////////////////////////////////////////////////////////
// CMovieCtl
HRESULT CMovieCtl::OnDraw(ATL_DRAWINFO& di)
{
// If we can get the ambient background color from the container then we
// will use it to fill our background
CComVariant var;
if (SUCCEEDED(m_spAmbientDispatch.GetProperty(DISPID_AMBIENT_BACKCOLOR, &var)))
{
LOGBRUSH logbrush;
COLORREF col;
logbrush.lbStyle = BS_SOLID;
OleTranslateColor(var.lVal, NULL, &col);
logbrush.lbColor = col;
HBRUSH hBrush = CreateBrushIndirect(&logbrush);
FillRect(di.hdcDraw, (RECT*)di.prcBounds, hBrush);
DeleteObject(hBrush);
}
return S_OK;
}
STDMETHODIMP CMovieCtl::put_FileName(BSTR newVal)
{
// Initialize Active Movie with the new filename
CreateFilterGraph(newVal);
SysFreeString(newVal);
return S_OK; //hr;
}
// Initialize Active Movie with the passed movie filename
HRESULT CMovieCtl::CreateFilterGraph(LPCOLESTR strFile)
{
HRESULT hr;
// If we are resetting the filename we need to close the existing one,
// otherwise we'll get another window created.
if (m_spVideoWindow)
{
m_spVideoWindow->Visible = FALSE; // Hide the video window
m_spVideoWindow->Owner = NULL;
m_spMediaControl.Release();
m_spVideoWindow.Release();
}
// Create the Active Movie object
hr = m_spVideoWindow.CreateInstance(__uuidof(FilgraphManager));
m_spMediaControl = m_spVideoWindow;
// Open the passed file
hr = m_spMediaControl->RenderFile(strFile);
// Now initialize the video window
HWND hWnd;
RECT rc = m_rcPos;
if (m_bWndLess)
{
// Obtain the HWND of the client's window
HDC hDC;
m_spInPlaceSite->GetDC(NULL, OLEDC_NODRAW, &hDC);
hWnd = WindowFromDC(hDC);
}
else
{
hWnd = m_hWnd;
OffsetRect(&rc, -rc.left, -rc.top);
}
m_spVideoWindow->Owner = (long)hWnd;
m_spVideoWindow->WindowStyle = WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
m_spVideoWindow->SetWindowPosition(rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top);
return hr;
}
// Play the movie
STDMETHODIMP CMovieCtl::Play()
{
HRESULT hr;
if (m_spVideoWindow == NULL)
return E_FAIL;
// Find out if we've reached the end of the movie and if we have
// rewind to the beginning
IMediaPositionPtr spMP = m_spVideoWindow;
if (spMP)
{
if (spMP->CurrentPosition >= spMP->Duration)
spMP->CurrentPosition = 0;
}
// Start the movie
if (m_spMediaControl)
hr = m_spMediaControl->Run();
else
hr = E_FAIL;
return hr;
}
// Pause the movie
STDMETHODIMP CMovieCtl::Pause()
{
if (m_spMediaControl)
m_spMediaControl->Pause();
return S_OK;
}
// Rewind the movie to the beginning
STDMETHODIMP CMovieCtl::Reset()
{
if (m_spVideoWindow)
{
IMediaPositionPtr spMP = m_spVideoWindow;
if (spMP)
spMP->CurrentPosition = 0;
}
return S_OK;
}
// Stop the movie
STDMETHODIMP CMovieCtl::Stop()
{
if (m_spMediaControl)
{
m_spMediaControl->Stop();
Reset(); // Go back to the beginning
m_spVideoWindow->Visible = FALSE; // Hide the video window
}
return S_OK;
}
// Override function so the COM support doesnt throw exeptions
void __stdcall _com_raise_error(HRESULT hr, IErrorInfo* perrinfo) //throw(_com_error)
{
}