merge

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

+