diff options
Diffstat (limited to 'indra/llwindow/lldragdropwin32.cpp')
| -rw-r--r-- | indra/llwindow/lldragdropwin32.cpp | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/indra/llwindow/lldragdropwin32.cpp b/indra/llwindow/lldragdropwin32.cpp new file mode 100644 index 0000000000..a10cfbf12f --- /dev/null +++ b/indra/llwindow/lldragdropwin32.cpp @@ -0,0 +1,296 @@ +/**
+ * @file lldragdrop32.cpp
+ * @brief Handler for Windows specific drag and drop (OS to client) code
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ *
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ *
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab. Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ *
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ *
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ *
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#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)
+ {
+ };
+
+ ////////////////////////////////////////////////////////////////////////////////
+ //
+ 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;
+
+ *pdwEffect = DROPEFFECT_COPY;
+
+ 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 );
+ window_imp->convertCoords(cursor_coord_window, &gl_coord);
+ MASK mask = gKeyboard->currentMask(TRUE);
+ window_imp->completeDragNDropRequest( gl_coord, mask, FALSE, std::string( "" ) );
+ }
+ *pdwEffect = DROPEFFECT_COPY;
+ }
+ else
+ {
+ *pdwEffect = DROPEFFECT_NONE;
+ };
+
+ return S_OK;
+ };
+
+ ////////////////////////////////////////////////////////////////////////////////
+ //
+ HRESULT __stdcall DragLeave( void )
+ {
+ return S_OK;
+ };
+
+ ////////////////////////////////////////////////////////////////////////////////
+ //
+ HRESULT __stdcall Drop( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
+ {
+ if ( mAllowDrop )
+ {
+ // construct a FORMATETC object
+ FORMATETC fmtetc = { CF_TEXT, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
+
+ // do we have text?
+ if( S_OK == pDataObject->QueryGetData( &fmtetc ) )
+ {
+ STGMEDIUM stgmed;
+ if( S_OK == pDataObject->GetData( &fmtetc, &stgmed ) )
+ {
+ // note: data is in an HGLOBAL - not 'regular' memory
+ PVOID data = GlobalLock( stgmed.hGlobal );
+
+ // window impl stored in Window data (neat!)
+ LLWindowWin32 *window_imp = (LLWindowWin32 *)GetWindowLong( mAppWindowHandle, GWL_USERDATA );
+ if ( NULL != window_imp )
+ {
+ LLCoordGL gl_coord( 0, 0 );
+
+ 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 );
+ window_imp->convertCoords(cursor_coord_window, &gl_coord);
+ llinfos << "### (Drop) URL is: " << data << 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
+ window_imp->completeDragNDropRequest( gl_coord, mask, TRUE, std::string( (char*)data ) );
+ };
+
+ GlobalUnlock( stgmed.hGlobal );
+
+ ReleaseStgMedium( &stgmed );
+ };
+ };
+
+ *pdwEffect = DROPEFFECT_COPY;
+ }
+ else
+ {
+ *pdwEffect = DROPEFFECT_NONE;
+ };
+
+ return S_OK;
+ };
+
+ ////////////////////////////////////////////////////////////////////////////////
+ //
+ private:
+ LONG mRefCount;
+ HWND mAppWindowHandle;
+ bool mAllowDrop;
+ 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
+
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