dtrans/test/win32/dnd/atlwindow.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <com/sun/star/uno/Reference.h>
  21 #include <com/sun/star/lang/XComponent.hpp>
  22 #include <com/sun/star/lang/XInitialization.hpp>
  23 #include <com/sun/star/datatransfer/dnd/XDropTarget.hpp>
  24 #include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
  25
  26 #include <cppuhelper/servicefactory.hxx>
  27 #include <rtl/string.h>
  28
  29 #include "atlwindow.hxx"
  30 #include "targetlistener.hxx"
  31 #include "sourcelistener.hxx"
  32 #include <map>
  33
  34 #include <winbase.h>
  35 using namespace com::sun::star::lang;
  36 using namespace com::sun::star::datatransfer::dnd;
  37 using namespace com::sun::star::datatransfer::dnd::DNDConstants;
  38 using namespace cppu;
  39 using namespace std;
  40
  41 LRESULT APIENTRY EditSubclassProc( HWND hwnd, UINT uMsg,WPARAM wParam, LPARAM lParam) ;
  42
  43 extern Reference< XMultiServiceFactory > MultiServiceFactory;
  44 DWORD WINAPI MTAFunc(LPVOID pParams);
  45
  46 char* szSTAWin= "XDragSource::executeDrag is called from the same "
  47                 "OLE STA thread that created the window.";
  48 char* szMTAWin= "XDragSource::executeDrag is called from an MTA thread "
  49                 "that did not create the window.";
  50
  51 WNDPROC wpOrigEditProc;
  52
  53 map<HWND, HWND> mapEditToMainWnd;
  54
  55 LRESULT AWindow::OnClose(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
  56 {
  57     Reference<XComponent> xcompSource( m_xDragSource, UNO_QUERY);
  58
  59     PostQuitMessage(0);
  60
  61     m_xDropTarget=0;
  62     m_xDragSource=0;
  63
  64      // Remove the subclass from the edit control.
  65     ::SetWindowLong(m_hwndEdit, GWL_WNDPROC,
  66                 (LONG) wpOrigEditProc);
  67
  68     return 0;
  69 }
  70
  71 LRESULT AWindow::OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
  72 {
  73     // Prepare the EDIT control
  74     m_hwndEdit = CreateWindowA(
  75         "EDIT",     // predefined class
  76         NULL,       // no window title
  77         WS_CHILD | WS_VISIBLE | WS_VSCROLL |
  78             ES_LEFT | ES_MULTILINE | ES_AUTOVSCROLL,
  79         0, 0, 0, 0, // set size in WM_SIZE message
  80         m_hWnd,       // parent window
  81         (HMENU) NULL, // edit control ID
  82         (HINSTANCE) GetWindowLong( GWL_HINSTANCE),
  83         NULL);
  84
  85     // the map is used in the window procedure for the edit window to associate the
  86     // it to the right main window ( AWindow)
  87     mapEditToMainWnd[m_hwndEdit]= m_hWnd;
  88     // Superclass the edit window, because we want to process mouse messages
  89     wpOrigEditProc = (WNDPROC) ::SetWindowLongA(m_hwndEdit,
  90                 GWL_WNDPROC, (LONG) EditSubclassProc);
  91
  92     // Add text to the window.
  93     if( m_isMTA)
  94         ::SendMessageA(m_hwndEdit, WM_SETTEXT, 0, (LPARAM) szMTAWin);
  95     else
  96         ::SendMessageA(m_hwndEdit, WM_SETTEXT, 0, (LPARAM) szSTAWin);
  97
  98     // create the DragSource
  99     Reference< XInterface> xint= MultiServiceFactory->createInstance("com.sun.star.datatransfer.dnd.OleDragSource");
 100     m_xDragSource.set( xint, UNO_QUERY );
 101     Reference<XInitialization> xInit( xint, UNO_QUERY);
 102
 103     Any ar[2];
 104     ar[1]<<= (sal_uInt32)m_hWnd;
 105     xInit->initialize( Sequence<Any>( ar, 2) );
 106
 107     //create the DropTarget
 108     Reference< XInterface> xintTarget= MultiServiceFactory->createInstance("com.sun.star.datatransfer.dnd.OleDropTarget");
 109     m_xDropTarget.set( xintTarget, UNO_QUERY );
 110     Reference<XInitialization> xInitTarget( xintTarget, UNO_QUERY);
 111
 112     Any any;
 113     any <<= (sal_uInt32)m_hWnd;
 114     xInitTarget->initialize( Sequence<Any>( &any, 1) );
 115
 116     m_xDropTarget->addDropTargetListener( static_cast<XDropTargetListener*>
 117         ( new DropTargetListener( m_hwndEdit)) );
 118 //  // make this window a drop target
 119     m_xDropTarget->setActive(sal_True);
 120
 121     return 0;
 122 }
 123
 124 // When the mouse is dragged for a second than a drag is initiated
 125 LRESULT AWindow::OnMouseAction(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 126 {
 127     if( uMsg== WM_LBUTTONDOWN)
 128     {
 129         SetTimer( 1, 1000);
 130     }
 131
 132     else if( uMsg == WM_LBUTTONUP)
 133     {
 134         KillTimer(  1);
 135     }
 136
 137     return 0;
 138 }
 139
 140 LRESULT AWindow::OnTimer(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 141 {
 142     USES_CONVERSION;
 143     KillTimer( 1);
 144     if(m_xDragSource.is())
 145     {
 146
 147         //Get the Text out of the Edit window
 148         int length= (int)::SendMessageA( m_hwndEdit, WM_GETTEXTLENGTH, 0, 0);
 149         char * pBuffer= new char[length + 1];
 150         ZeroMemory( pBuffer, length + 1);
 151         ::SendMessageA( m_hwndEdit, WM_GETTEXT, length, (LPARAM) pBuffer);
 152
 153         IDataObject* pData= NULL;
 154         HRESULT hr= CreateDataCache( NULL, CLSID_NULL, __uuidof(IDataObject),(void**) &pData);
 155         if( pData)
 156         {
 157             FORMATETC format={ CF_TEXT, NULL, DVASPECT_CONTENT, -1, };
 158
 159             HGLOBAL mem= GlobalAlloc(GHND, length + 1 );
 160             void* pMem= GlobalLock( mem);
 161             memcpy( pMem, pBuffer, length+1);
 162             GlobalUnlock( mem);
 163
 164             STGMEDIUM medium;
 165             medium.tymed= TYMED_HGLOBAL;
 166             medium.hGlobal= mem;
 167             medium.pUnkForRelease= NULL;
 168
 169             pData->SetData( &format,  &medium, TRUE); // releases HGLOBAL eventually
 170
 171             Reference<XTransferable> xTrans= CDOTransferable::create(
 172                                                 MultiServiceFactory, pData);
 173
 174             // call XDragSource::executeDrag from an MTA
 175             if( m_isMTA )
 176             {
 177                 DWORD mtaThreadId;
 178                 ThreadData data;
 179                 data.source= m_xDragSource;
 180                 data.transferable= xTrans;
 181
 182                 data.evtThreadReady= CreateEvent( NULL, FALSE, FALSE, NULL);
 183
 184                 CloseHandle(CreateThread(NULL, 0, MTAFunc, &data, 0, &mtaThreadId));
 185                 // We must wait until the thread copied the ThreadData structure
 186                 WaitForSingleObject( data.evtThreadReady, INFINITE);
 187                 CloseHandle( data.evtThreadReady);
 188
 189             }
 190             else
 191             {
 192                 m_xDragSource->startDrag( DragGestureEvent(),
 193                     ACTION_LINK|ACTION_MOVE|ACTION_COPY,
 194                     0,
 195                     0,
 196                     xTrans,
 197                     Reference<XDragSourceListener>( static_cast<XDragSourceListener*>(new DragSourceListener() ) ) );
 198             }
 199         }
 200
 201         delete[] pBuffer;
 202     }
 203
 204     return 0;
 205 }
 206
 207 LRESULT AWindow::OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 208 {
 209     // Make the edit control the size of the window's
 210     // client area.
 211     ::MoveWindow(m_hwndEdit,
 212         0, 0,           // starting x- and y-coordinates
 213         LOWORD(lParam), // width of client area
 214         HIWORD(lParam), // height of client area
 215         TRUE);          // repaint window
 216
 217     return 0;
 218 }
 219 LRESULT AWindow::OnFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 220 {
 221     ::SetFocus(m_hwndEdit);
 222     return 0;
 223 }
 224
 225 // Subclass procedure for EDIT window
 226 LRESULT APIENTRY EditSubclassProc( HWND hwnd, UINT uMsg,WPARAM wParam, LPARAM lParam)
 227 {
 228
 229     if( uMsg >= WM_MOUSEFIRST && uMsg <= WM_MOUSELAST)
 230     {
 231         HWND hAWindow= mapEditToMainWnd[hwnd];
 232         ::SendMessage( hAWindow, uMsg, wParam, lParam);
 233
 234     }
 235     return CallWindowProc( wpOrigEditProc, hwnd, uMsg,
 236         wParam, lParam);
 237 }
 238
 239 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */