362 lines
9.1 KiB
C++
362 lines
9.1 KiB
C++
/**
|
|
* @file lldragdrop32.cpp
|
|
* @brief Handler for Windows specific drag and drop (OS to client) code
|
|
*
|
|
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
|
|
* Second Life Viewer Source Code
|
|
* Copyright (C) 2010, Linden Research, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation;
|
|
* version 2.1 of the License only.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
|
|
* $/LicenseInfo$
|
|
*/
|
|
|
|
#if LL_WINDOWS
|
|
|
|
#if LL_OS_DRAGDROP_ENABLED
|
|
|
|
#include "linden_common.h"
|
|
|
|
#include "llwindowwin32.h"
|
|
#include "llkeyboardwin32.h"
|
|
#include "llwindowcallbacks.h"
|
|
#include "lldragdropwin32.h"
|
|
|
|
class LLDragDropWin32Target:
|
|
public IDropTarget
|
|
{
|
|
public:
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
LLDragDropWin32Target( HWND hWnd ) :
|
|
mRefCount( 1 ),
|
|
mAppWindowHandle( hWnd ),
|
|
mAllowDrop(false),
|
|
mIsSlurl(false)
|
|
{
|
|
};
|
|
|
|
virtual ~LLDragDropWin32Target()
|
|
{
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
ULONG __stdcall AddRef( void )
|
|
{
|
|
return InterlockedIncrement( &mRefCount );
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
ULONG __stdcall Release( void )
|
|
{
|
|
LONG count = InterlockedDecrement( &mRefCount );
|
|
|
|
if ( count == 0 )
|
|
{
|
|
delete this;
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
return count;
|
|
};
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
HRESULT __stdcall QueryInterface( REFIID iid, void** ppvObject )
|
|
{
|
|
if ( iid == IID_IUnknown || iid == IID_IDropTarget )
|
|
{
|
|
AddRef();
|
|
*ppvObject = this;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
*ppvObject = 0;
|
|
return E_NOINTERFACE;
|
|
};
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
HRESULT __stdcall DragEnter( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
|
|
{
|
|
FORMATETC fmtetc = { CF_TEXT, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
|
|
|
|
// support CF_TEXT using a HGLOBAL?
|
|
if ( S_OK == pDataObject->QueryGetData( &fmtetc ) )
|
|
{
|
|
mAllowDrop = true;
|
|
mDropUrl = std::string();
|
|
mIsSlurl = false;
|
|
|
|
STGMEDIUM stgmed;
|
|
if( S_OK == pDataObject->GetData( &fmtetc, &stgmed ) )
|
|
{
|
|
PVOID data = GlobalLock( stgmed.hGlobal );
|
|
mDropUrl = std::string( (char*)data );
|
|
// XXX MAJOR MAJOR HACK!
|
|
LLWindowWin32 *window_imp = (LLWindowWin32 *)GetWindowLong(mAppWindowHandle, GWL_USERDATA);
|
|
if (NULL != window_imp)
|
|
{
|
|
LLCoordGL gl_coord( 0, 0 );
|
|
|
|
POINT pt2;
|
|
pt2.x = pt.x;
|
|
pt2.y = pt.y;
|
|
ScreenToClient( mAppWindowHandle, &pt2 );
|
|
|
|
LLCoordWindow cursor_coord_window( pt2.x, pt2.y );
|
|
MASK mask = gKeyboard->currentMask(TRUE);
|
|
|
|
LLWindowCallbacks::DragNDropResult result = window_imp->completeDragNDropRequest( cursor_coord_window.convert(), mask,
|
|
LLWindowCallbacks::DNDA_START_TRACKING, mDropUrl );
|
|
|
|
switch (result)
|
|
{
|
|
case LLWindowCallbacks::DND_COPY:
|
|
*pdwEffect = DROPEFFECT_COPY;
|
|
break;
|
|
case LLWindowCallbacks::DND_LINK:
|
|
*pdwEffect = DROPEFFECT_LINK;
|
|
break;
|
|
case LLWindowCallbacks::DND_MOVE:
|
|
*pdwEffect = DROPEFFECT_MOVE;
|
|
break;
|
|
case LLWindowCallbacks::DND_NONE:
|
|
default:
|
|
*pdwEffect = DROPEFFECT_NONE;
|
|
break;
|
|
}
|
|
};
|
|
|
|
GlobalUnlock( stgmed.hGlobal );
|
|
ReleaseStgMedium( &stgmed );
|
|
};
|
|
SetFocus( mAppWindowHandle );
|
|
}
|
|
else
|
|
{
|
|
mAllowDrop = false;
|
|
*pdwEffect = DROPEFFECT_NONE;
|
|
};
|
|
|
|
return S_OK;
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
HRESULT __stdcall DragOver( DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
|
|
{
|
|
if ( mAllowDrop )
|
|
{
|
|
// XXX MAJOR MAJOR HACK!
|
|
LLWindowWin32 *window_imp = (LLWindowWin32 *)GetWindowLong(mAppWindowHandle, GWL_USERDATA);
|
|
if (NULL != window_imp)
|
|
{
|
|
LLCoordGL gl_coord( 0, 0 );
|
|
|
|
POINT pt2;
|
|
pt2.x = pt.x;
|
|
pt2.y = pt.y;
|
|
ScreenToClient( mAppWindowHandle, &pt2 );
|
|
|
|
LLCoordWindow cursor_coord_window( pt2.x, pt2.y );
|
|
MASK mask = gKeyboard->currentMask(TRUE);
|
|
|
|
LLWindowCallbacks::DragNDropResult result = window_imp->completeDragNDropRequest( cursor_coord_window.convert(), mask,
|
|
LLWindowCallbacks::DNDA_TRACK, mDropUrl );
|
|
|
|
switch (result)
|
|
{
|
|
case LLWindowCallbacks::DND_COPY:
|
|
*pdwEffect = DROPEFFECT_COPY;
|
|
break;
|
|
case LLWindowCallbacks::DND_LINK:
|
|
*pdwEffect = DROPEFFECT_LINK;
|
|
break;
|
|
case LLWindowCallbacks::DND_MOVE:
|
|
*pdwEffect = DROPEFFECT_MOVE;
|
|
break;
|
|
case LLWindowCallbacks::DND_NONE:
|
|
default:
|
|
*pdwEffect = DROPEFFECT_NONE;
|
|
break;
|
|
}
|
|
};
|
|
}
|
|
else
|
|
{
|
|
*pdwEffect = DROPEFFECT_NONE;
|
|
};
|
|
|
|
return S_OK;
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
HRESULT __stdcall DragLeave( void )
|
|
{
|
|
// XXX MAJOR MAJOR HACK!
|
|
LLWindowWin32 *window_imp = (LLWindowWin32 *)GetWindowLong(mAppWindowHandle, GWL_USERDATA);
|
|
if (NULL != window_imp)
|
|
{
|
|
LLCoordGL gl_coord( 0, 0 );
|
|
MASK mask = gKeyboard->currentMask(TRUE);
|
|
window_imp->completeDragNDropRequest( gl_coord, mask, LLWindowCallbacks::DNDA_STOP_TRACKING, mDropUrl );
|
|
};
|
|
return S_OK;
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
HRESULT __stdcall Drop( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
|
|
{
|
|
if ( mAllowDrop )
|
|
{
|
|
// window impl stored in Window data (neat!)
|
|
LLWindowWin32 *window_imp = (LLWindowWin32 *)GetWindowLong( mAppWindowHandle, GWL_USERDATA );
|
|
if ( NULL != window_imp )
|
|
{
|
|
POINT pt_client;
|
|
pt_client.x = pt.x;
|
|
pt_client.y = pt.y;
|
|
ScreenToClient( mAppWindowHandle, &pt_client );
|
|
|
|
LLCoordWindow cursor_coord_window( pt_client.x, pt_client.y );
|
|
LLCoordGL gl_coord(cursor_coord_window.convert());
|
|
llinfos << "### (Drop) URL is: " << mDropUrl << llendl;
|
|
llinfos << "### raw coords are: " << pt.x << " x " << pt.y << llendl;
|
|
llinfos << "### client coords are: " << pt_client.x << " x " << pt_client.y << llendl;
|
|
llinfos << "### GL coords are: " << gl_coord.mX << " x " << gl_coord.mY << llendl;
|
|
llinfos << llendl;
|
|
|
|
// no keyboard modifier option yet but we could one day
|
|
MASK mask = gKeyboard->currentMask( TRUE );
|
|
|
|
// actually do the drop
|
|
LLWindowCallbacks::DragNDropResult result = window_imp->completeDragNDropRequest( gl_coord, mask,
|
|
LLWindowCallbacks::DNDA_DROPPED, mDropUrl );
|
|
|
|
switch (result)
|
|
{
|
|
case LLWindowCallbacks::DND_COPY:
|
|
*pdwEffect = DROPEFFECT_COPY;
|
|
break;
|
|
case LLWindowCallbacks::DND_LINK:
|
|
*pdwEffect = DROPEFFECT_LINK;
|
|
break;
|
|
case LLWindowCallbacks::DND_MOVE:
|
|
*pdwEffect = DROPEFFECT_MOVE;
|
|
break;
|
|
case LLWindowCallbacks::DND_NONE:
|
|
default:
|
|
*pdwEffect = DROPEFFECT_NONE;
|
|
break;
|
|
}
|
|
};
|
|
}
|
|
else
|
|
{
|
|
*pdwEffect = DROPEFFECT_NONE;
|
|
};
|
|
|
|
return S_OK;
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
private:
|
|
LONG mRefCount;
|
|
HWND mAppWindowHandle;
|
|
bool mAllowDrop;
|
|
std::string mDropUrl;
|
|
bool mIsSlurl;
|
|
friend class LLWindowWin32;
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
LLDragDropWin32::LLDragDropWin32() :
|
|
mDropTarget( NULL ),
|
|
mDropWindowHandle( NULL )
|
|
|
|
{
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
LLDragDropWin32::~LLDragDropWin32()
|
|
{
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
bool LLDragDropWin32::init( HWND hWnd )
|
|
{
|
|
if ( NOERROR != OleInitialize( NULL ) )
|
|
return FALSE;
|
|
|
|
mDropTarget = new LLDragDropWin32Target( hWnd );
|
|
if ( mDropTarget )
|
|
{
|
|
HRESULT result = CoLockObjectExternal( mDropTarget, TRUE, FALSE );
|
|
if ( S_OK == result )
|
|
{
|
|
result = RegisterDragDrop( hWnd, mDropTarget );
|
|
if ( S_OK != result )
|
|
{
|
|
// RegisterDragDrop failed
|
|
return false;
|
|
};
|
|
|
|
// all ok
|
|
mDropWindowHandle = hWnd;
|
|
}
|
|
else
|
|
{
|
|
// Unable to lock OLE object
|
|
return false;
|
|
};
|
|
};
|
|
|
|
// success
|
|
return true;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
void LLDragDropWin32::reset()
|
|
{
|
|
if ( mDropTarget )
|
|
{
|
|
RevokeDragDrop( mDropWindowHandle );
|
|
CoLockObjectExternal( mDropTarget, FALSE, TRUE );
|
|
mDropTarget->Release();
|
|
};
|
|
|
|
OleUninitialize();
|
|
}
|
|
|
|
#endif // LL_OS_DRAGDROP_ENABLED
|
|
|
|
#endif // LL_WINDOWS
|
|
|