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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <com/sun/star/uno/Reference.h>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/datatransfer/dnd/XDropTarget.hpp>
#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
#include <cppuhelper/servicefactory.hxx>
#include <rtl/string.h>
#include "atlwindow.hxx"
#include "targetlistener.hxx"
#include "sourcelistener.hxx"
#include <map>
#include <winbase.h>
using namespace com::sun::star::lang;
using namespace com::sun::star::datatransfer::dnd;
using namespace com::sun::star::datatransfer::dnd::DNDConstants;
using namespace cppu;
using namespace std;
LRESULT APIENTRY EditSubclassProc( HWND hwnd, UINT uMsg,WPARAM wParam, LPARAM lParam) ;
extern Reference< XMultiServiceFactory > MultiServiceFactory;
DWORD WINAPI MTAFunc(LPVOID pParams);
char* szSTAWin= "XDragSource::executeDrag is called from the same "
"OLE STA thread that created the window.";
char* szMTAWin= "XDragSource::executeDrag is called from an MTA thread "
"that did not create the window.";
WNDPROC wpOrigEditProc;
map<HWND, HWND> mapEditToMainWnd;
LRESULT AWindow::OnClose(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
Reference<XComponent> xcompSource( m_xDragSource, UNO_QUERY);
PostQuitMessage(0);
m_xDropTarget=0;
m_xDragSource=0;
// Remove the subclass from the edit control.
::SetWindowLong(m_hwndEdit, GWL_WNDPROC,
(LONG) wpOrigEditProc);
return 0;
}
LRESULT AWindow::OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
// Prepare the EDIT control
m_hwndEdit = CreateWindowA(
"EDIT", // predefined class
NULL, // no window title
WS_CHILD | WS_VISIBLE | WS_VSCROLL |
ES_LEFT | ES_MULTILINE | ES_AUTOVSCROLL,
0, 0, 0, 0, // set size in WM_SIZE message
m_hWnd, // parent window
(HMENU) NULL, // edit control ID
(HINSTANCE) GetWindowLong( GWL_HINSTANCE),
NULL);
// the map is used in the window procedure for the edit window to associate the
// it to the right main window ( AWindow)
mapEditToMainWnd[m_hwndEdit]= m_hWnd;
// Superclass the edit window, because we want to process mouse messages
wpOrigEditProc = (WNDPROC) ::SetWindowLongA(m_hwndEdit,
GWL_WNDPROC, (LONG) EditSubclassProc);
// Add text to the window.
if( m_isMTA)
::SendMessageA(m_hwndEdit, WM_SETTEXT, 0, (LPARAM) szMTAWin);
else
::SendMessageA(m_hwndEdit, WM_SETTEXT, 0, (LPARAM) szSTAWin);
// create the DragSource
Reference< XInterface> xint= MultiServiceFactory->createInstance("com.sun.star.datatransfer.dnd.OleDragSource");
m_xDragSource.set( xint, UNO_QUERY );
Reference<XInitialization> xInit( xint, UNO_QUERY);
Any ar[2];
ar[1]<<= (sal_uInt32)m_hWnd;
xInit->initialize( Sequence<Any>( ar, 2) );
//create the DropTarget
Reference< XInterface> xintTarget= MultiServiceFactory->createInstance("com.sun.star.datatransfer.dnd.OleDropTarget");
m_xDropTarget.set( xintTarget, UNO_QUERY );
Reference<XInitialization> xInitTarget( xintTarget, UNO_QUERY);
Any any;
any <<= (sal_uInt32)m_hWnd;
xInitTarget->initialize( Sequence<Any>( &any, 1) );
m_xDropTarget->addDropTargetListener( static_cast<XDropTargetListener*>
( new DropTargetListener( m_hwndEdit)) );
// // make this window a drop target
m_xDropTarget->setActive(sal_True);
return 0;
}
// When the mouse is dragged for a second than a drag is initiated
LRESULT AWindow::OnMouseAction(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
if( uMsg== WM_LBUTTONDOWN)
{
SetTimer( 1, 1000);
}
else if( uMsg == WM_LBUTTONUP)
{
KillTimer( 1);
}
return 0;
}
LRESULT AWindow::OnTimer(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
USES_CONVERSION;
KillTimer( 1);
if(m_xDragSource.is())
{
//Get the Text out of the Edit window
int length= (int)::SendMessageA( m_hwndEdit, WM_GETTEXTLENGTH, 0, 0);
char * pBuffer= new char[length + 1];
ZeroMemory( pBuffer, length + 1);
::SendMessageA( m_hwndEdit, WM_GETTEXT, length, (LPARAM) pBuffer);
IDataObject* pData= NULL;
HRESULT hr= CreateDataCache( NULL, CLSID_NULL, __uuidof(IDataObject),(void**) &pData);
if( pData)
{
FORMATETC format={ CF_TEXT, NULL, DVASPECT_CONTENT, -1, };
HGLOBAL mem= GlobalAlloc(GHND, length + 1 );
void* pMem= GlobalLock( mem);
memcpy( pMem, pBuffer, length+1);
GlobalUnlock( mem);
STGMEDIUM medium;
medium.tymed= TYMED_HGLOBAL;
medium.hGlobal= mem;
medium.pUnkForRelease= NULL;
pData->SetData( &format, &medium, TRUE); // releases HGLOBAL eventually
Reference<XTransferable> xTrans= CDOTransferable::create(
MultiServiceFactory, pData);
// call XDragSource::executeDrag from an MTA
if( m_isMTA )
{
DWORD mtaThreadId;
ThreadData data;
data.source= m_xDragSource;
data.transferable= xTrans;
data.evtThreadReady= CreateEvent( NULL, FALSE, FALSE, NULL);
CloseHandle(CreateThread(NULL, 0, MTAFunc, &data, 0, &mtaThreadId));
// We must wait until the thread copied the ThreadData structure
WaitForSingleObject( data.evtThreadReady, INFINITE);
CloseHandle( data.evtThreadReady);
}
else
{
m_xDragSource->startDrag( DragGestureEvent(),
ACTION_LINK|ACTION_MOVE|ACTION_COPY,
0,
0,
xTrans,
Reference<XDragSourceListener>( static_cast<XDragSourceListener*>(new DragSourceListener() ) ) );
}
}
delete[] pBuffer;
}
return 0;
}
LRESULT AWindow::OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
// Make the edit control the size of the window's
// client area.
::MoveWindow(m_hwndEdit,
0, 0, // starting x- and y-coordinates
LOWORD(lParam), // width of client area
HIWORD(lParam), // height of client area
TRUE); // repaint window
return 0;
}
LRESULT AWindow::OnFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
::SetFocus(m_hwndEdit);
return 0;
}
// Subclass procedure for EDIT window
LRESULT APIENTRY EditSubclassProc( HWND hwnd, UINT uMsg,WPARAM wParam, LPARAM lParam)
{
if( uMsg >= WM_MOUSEFIRST && uMsg <= WM_MOUSELAST)
{
HWND hAWindow= mapEditToMainWnd[hwnd];
::SendMessage( hAWindow, uMsg, wParam, lParam);
}
return CallWindowProc( wpOrigEditProc, hwnd, uMsg,
wParam, lParam);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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