projects/activex/viewobject.cpp

   1 /*****************************************************************************
   2  * viewobject.cpp: ActiveX control for VLC
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  *
   6  * Authors: Damien Fouilleul <Damien.Fouilleul@laposte.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #include "plugin.h"
  24 #include "viewobject.h"
  25
  26 #include "utils.h"
  27
  28 using namespace std;
  29
  30 STDMETHODIMP VLCViewObject::Draw(DWORD dwAspect, LONG lindex, PVOID pvAspect,
  31         DVTARGETDEVICE *ptd, HDC hicTargetDev, HDC hdcDraw, LPCRECTL lprcBounds,
  32         LPCRECTL lprcWBounds, BOOL(CALLBACK *pfnContinue)(DWORD), DWORD dwContinue)
  33 {
  34     if( dwAspect & DVASPECT_CONTENT )
  35     {
  36         if( NULL == lprcBounds )
  37             return E_INVALIDARG;
  38
  39         BOOL releaseDC = FALSE;
  40         SIZEL size = _p_instance->getExtent();
  41
  42         if( NULL == ptd )
  43         {
  44             hicTargetDev = CreateDevDC(NULL);
  45             releaseDC = TRUE;
  46         }
  47         DPFromHimetric(hicTargetDev, (LPPOINT)&size, 1);
  48
  49         RECTL bounds = { 0L, 0L, size.cx, size.cy };
  50
  51         int sdc = SaveDC(hdcDraw);
  52         SetMapMode(hdcDraw, MM_ANISOTROPIC);
  53         SetWindowOrgEx(hdcDraw, 0, 0, NULL);
  54         SetWindowExtEx(hdcDraw, size.cx, size.cy, NULL);
  55         OffsetViewportOrgEx(hdcDraw, lprcBounds->left, lprcBounds->top, NULL);
  56         SetViewportExtEx(hdcDraw, lprcBounds->right-lprcBounds->left,
  57                 lprcBounds->bottom-lprcBounds->top, NULL);
  58
  59         _p_instance->onDraw(ptd, hicTargetDev, hdcDraw, &bounds, lprcWBounds);
  60         RestoreDC(hdcDraw, sdc);
  61
  62         if( releaseDC )
  63             DeleteDC(hicTargetDev);
  64
  65         return S_OK;
  66     }
  67     return E_NOTIMPL;
  68 };
  69
  70 STDMETHODIMP VLCViewObject::Freeze(DWORD dwAspect, LONG lindex,
  71         PVOID pvAspect, LPDWORD pdwFreeze)
  72 {
  73     return E_NOTIMPL;
  74 };
  75
  76 STDMETHODIMP VLCViewObject::GetAdvise(LPDWORD pdwAspect, LPDWORD padvf,
  77         LPADVISESINK *ppAdviseSink)
  78 {
  79     if( NULL != pdwAspect )
  80         *pdwAspect = _dwAspect;
  81
  82     if( NULL != padvf )
  83         *padvf = _advf;
  84
  85     if( NULL != ppAdviseSink )
  86     {
  87         *ppAdviseSink = _pAdvSink;
  88         if( NULL != _pAdvSink )
  89             _pAdvSink->AddRef();
  90     }
  91
  92     return S_OK;
  93 };
  94
  95 STDMETHODIMP VLCViewObject::GetColorSet(DWORD dwAspect, LONG lindex,
  96         PVOID pvAspect, DVTARGETDEVICE *ptd, HDC hicTargetDev, LPLOGPALETTE *ppColorSet)
  97 {
  98     return S_FALSE;
  99 };
 100
 101 STDMETHODIMP VLCViewObject::SetAdvise(DWORD dwAspect, DWORD advf,
 102         LPADVISESINK pAdvSink)
 103 {
 104     if( NULL != pAdvSink )
 105         pAdvSink->AddRef();
 106
 107     if( NULL != _pAdvSink )
 108         _pAdvSink->Release();
 109
 110     _dwAspect = dwAspect;
 111     _advf = advf;
 112     _pAdvSink = pAdvSink;
 113
 114     if( (dwAspect & DVASPECT_CONTENT) && (advf & ADVF_PRIMEFIRST) && (NULL != _pAdvSink) )
 115     {
 116         _pAdvSink->OnViewChange(DVASPECT_CONTENT, -1);
 117     }
 118
 119     return S_OK;
 120 };
 121
 122 STDMETHODIMP VLCViewObject::Unfreeze(DWORD dwFreeze)
 123 {
 124     return E_NOTIMPL;
 125 };
 126
 127 STDMETHODIMP VLCViewObject::GetExtent(DWORD dwAspect, LONG lindex,
 128         DVTARGETDEVICE *ptd, LPSIZEL lpSizel)
 129 {
 130     if( dwAspect & DVASPECT_CONTENT )
 131     {
 132         *lpSizel = _p_instance->getExtent();
 133         return S_OK;
 134     }
 135     lpSizel->cx= 0L;
 136     lpSizel->cy= 0L;
 137     return E_NOTIMPL;
 138 };
 139