Merge

1 files changed, 370 insertions, 0 deletions

diff --git a/indra/llwindow/lldragdropwin32.cpp b/indra/llwindow/lldragdropwin32.cpp
new file mode 100644
index 0000000000..9b80fe0a84
--- /dev/null
+++ b/indra/llwindow/lldragdropwin32.cpp
@@ -0,0 +1,370 @@
+/**
+ * @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)
+		{
+		};
+
+		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 );
+						window_imp->convertCoords(cursor_coord_window, &gl_coord);
+						MASK mask = gKeyboard->currentMask(TRUE);
+
+						LLWindowCallbacks::DragNDropResult result = window_imp->completeDragNDropRequest( gl_coord, 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 );
+					window_imp->convertCoords(cursor_coord_window, &gl_coord);
+					MASK mask = gKeyboard->currentMask(TRUE);
+
+					LLWindowCallbacks::DragNDropResult result = window_imp->completeDragNDropRequest( gl_coord, 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 )
+				{
+					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: " << 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
+