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Diffstat (limited to 'vcl/source/window/mouse.cxx')
| -rw-r--r-- | vcl/source/window/mouse.cxx | 768 |
1 files changed, 768 insertions, 0 deletions
diff --git a/vcl/source/window/mouse.cxx b/vcl/source/window/mouse.cxx new file mode 100644 index 000000000..de88cae1d --- /dev/null +++ b/vcl/source/window/mouse.cxx @@ -0,0 +1,768 @@ +/* -*- 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 <config_feature_desktop.h> +#include <config_vclplug.h> + +#include <tools/time.hxx> + +#include <LibreOfficeKit/LibreOfficeKitEnums.h> + +#include <vcl/ITiledRenderable.hxx> +#include <vcl/svapp.hxx> +#include <vcl/window.hxx> +#include <vcl/cursor.hxx> +#include <vcl/sysdata.hxx> +#include <vcl/event.hxx> + +#include <sal/types.h> + +#include <window.h> +#include <svdata.hxx> +#include <salobj.hxx> +#include <salgdi.hxx> +#include <salframe.hxx> +#include <salinst.hxx> + +#include <dndlistenercontainer.hxx> +#include <dndeventdispatcher.hxx> + +#include <com/sun/star/datatransfer/dnd/XDragSource.hpp> +#include <com/sun/star/datatransfer/dnd/XDropTarget.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> + +#include <comphelper/processfactory.hxx> + +using namespace ::com::sun::star::uno; + +namespace vcl { + +WindowHitTest Window::ImplHitTest( const Point& rFramePos ) +{ + Point aFramePos( rFramePos ); + if( GetOutDev()->ImplIsAntiparallel() ) + { + const OutputDevice *pOutDev = GetOutDev(); + pOutDev->ReMirror( aFramePos ); + } + if ( !GetOutputRectPixel().Contains( aFramePos ) ) + return WindowHitTest::NONE; + if ( mpWindowImpl->mbWinRegion ) + { + Point aTempPos = aFramePos; + aTempPos.AdjustX( -GetOutDev()->mnOutOffX ); + aTempPos.AdjustY( -GetOutDev()->mnOutOffY ); + if ( !mpWindowImpl->maWinRegion.Contains( aTempPos ) ) + return WindowHitTest::NONE; + } + + WindowHitTest nHitTest = WindowHitTest::Inside; + if ( mpWindowImpl->mbMouseTransparent ) + nHitTest |= WindowHitTest::Transparent; + return nHitTest; +} + +bool Window::ImplTestMousePointerSet() +{ + // as soon as mouse is captured, switch mouse-pointer + if ( IsMouseCaptured() ) + return true; + + // if the mouse is over the window, switch it + tools::Rectangle aClientRect( Point( 0, 0 ), GetOutputSizePixel() ); + return aClientRect.Contains( GetPointerPosPixel() ); +} + +PointerStyle Window::ImplGetMousePointer() const +{ + PointerStyle ePointerStyle; + bool bWait = false; + + if ( IsEnabled() && IsInputEnabled() && ! IsInModalMode() ) + ePointerStyle = GetPointer(); + else + ePointerStyle = PointerStyle::Arrow; + + const vcl::Window* pWindow = this; + do + { + // when the pointer is not visible stop the search, as + // this status should not be overwritten + if ( pWindow->mpWindowImpl->mbNoPtrVisible ) + return PointerStyle::Null; + + if ( !bWait ) + { + if ( pWindow->mpWindowImpl->mnWaitCount ) + { + ePointerStyle = PointerStyle::Wait; + bWait = true; + } + else + { + if ( pWindow->mpWindowImpl->mbChildPtrOverwrite ) + ePointerStyle = pWindow->GetPointer(); + } + } + + if ( pWindow->ImplIsOverlapWindow() ) + break; + + pWindow = pWindow->ImplGetParent(); + } + while ( pWindow ); + + return ePointerStyle; +} + +void Window::ImplCallMouseMove( sal_uInt16 nMouseCode, bool bModChanged ) +{ + if ( !(mpWindowImpl->mpFrameData->mbMouseIn && mpWindowImpl->mpFrameWindow->mpWindowImpl->mbReallyVisible) ) + return; + + sal_uInt64 nTime = tools::Time::GetSystemTicks(); + tools::Long nX = mpWindowImpl->mpFrameData->mnLastMouseX; + tools::Long nY = mpWindowImpl->mpFrameData->mnLastMouseY; + sal_uInt16 nCode = nMouseCode; + MouseEventModifiers nMode = mpWindowImpl->mpFrameData->mnMouseMode; + bool bLeave; + // check for MouseLeave + bLeave = ((nX < 0) || (nY < 0) || + (nX >= mpWindowImpl->mpFrameWindow->GetOutDev()->mnOutWidth) || + (nY >= mpWindowImpl->mpFrameWindow->GetOutDev()->mnOutHeight)) && + !ImplGetSVData()->mpWinData->mpCaptureWin; + nMode |= MouseEventModifiers::SYNTHETIC; + if ( bModChanged ) + nMode |= MouseEventModifiers::MODIFIERCHANGED; + ImplHandleMouseEvent( mpWindowImpl->mpFrameWindow, MouseNotifyEvent::MOUSEMOVE, bLeave, nX, nY, nTime, nCode, nMode ); +} + +void Window::ImplGenerateMouseMove() +{ + if ( mpWindowImpl && mpWindowImpl->mpFrameData && + !mpWindowImpl->mpFrameData->mnMouseMoveId ) + mpWindowImpl->mpFrameData->mnMouseMoveId = Application::PostUserEvent( LINK( mpWindowImpl->mpFrameWindow, Window, ImplGenerateMouseMoveHdl ), nullptr, true ); +} + +IMPL_LINK_NOARG(Window, ImplGenerateMouseMoveHdl, void*, void) +{ + mpWindowImpl->mpFrameData->mnMouseMoveId = nullptr; + vcl::Window* pCaptureWin = ImplGetSVData()->mpWinData->mpCaptureWin; + if( ! pCaptureWin || + (pCaptureWin->mpWindowImpl && pCaptureWin->mpWindowImpl->mpFrame == mpWindowImpl->mpFrame) + ) + { + ImplCallMouseMove( mpWindowImpl->mpFrameData->mnMouseCode ); + } +} + +void Window::ImplInvertFocus( const tools::Rectangle& rRect ) +{ + InvertTracking( rRect, ShowTrackFlags::Small | ShowTrackFlags::TrackWindow ); +} + +static bool IsWindowFocused(const WindowImpl& rWinImpl) +{ + if (rWinImpl.mpSysObj) + return true; + + if (rWinImpl.mpFrameData->mbHasFocus) + return true; + + if (rWinImpl.mbFakeFocusSet) + return true; + + return false; +} + +void Window::ImplGrabFocus( GetFocusFlags nFlags ) +{ + // #143570# no focus for destructing windows + if( !mpWindowImpl || mpWindowImpl->mbInDispose ) + return; + + // some event listeners do really bad stuff + // => prepare for the worst + VclPtr<vcl::Window> xWindow( this ); + + // Currently the client window should always get the focus + // Should the border window at some point be focusable + // we need to change all GrabFocus() instances in VCL, + // e.g. in ToTop() + + if ( mpWindowImpl->mpClientWindow ) + { + // For a lack of design we need a little hack here to + // ensure that dialogs on close pass the focus back to + // the correct window + if ( mpWindowImpl->mpLastFocusWindow && (mpWindowImpl->mpLastFocusWindow.get() != this) && + !(mpWindowImpl->mnDlgCtrlFlags & DialogControlFlags::WantFocus) && + mpWindowImpl->mpLastFocusWindow->IsEnabled() && + mpWindowImpl->mpLastFocusWindow->IsInputEnabled() && + ! mpWindowImpl->mpLastFocusWindow->IsInModalMode() + ) + mpWindowImpl->mpLastFocusWindow->GrabFocus(); + else + mpWindowImpl->mpClientWindow->GrabFocus(); + return; + } + else if ( mpWindowImpl->mbFrame ) + { + // For a lack of design we need a little hack here to + // ensure that dialogs on close pass the focus back to + // the correct window + if ( mpWindowImpl->mpLastFocusWindow && (mpWindowImpl->mpLastFocusWindow.get() != this) && + !(mpWindowImpl->mnDlgCtrlFlags & DialogControlFlags::WantFocus) && + mpWindowImpl->mpLastFocusWindow->IsEnabled() && + mpWindowImpl->mpLastFocusWindow->IsInputEnabled() && + ! mpWindowImpl->mpLastFocusWindow->IsInModalMode() + ) + { + mpWindowImpl->mpLastFocusWindow->GrabFocus(); + return; + } + } + + // If the Window is disabled, then we don't change the focus + if ( !IsEnabled() || !IsInputEnabled() || IsInModalMode() ) + return; + + // we only need to set the focus if it is not already set + // note: if some other frame is waiting for an asynchronous focus event + // we also have to post an asynchronous focus event for this frame + // which is done using ToTop + ImplSVData* pSVData = ImplGetSVData(); + + bool bAsyncFocusWaiting = false; + vcl::Window *pFrame = pSVData->maFrameData.mpFirstFrame; + while( pFrame && pFrame->mpWindowImpl && pFrame->mpWindowImpl->mpFrameData ) + { + if( pFrame != mpWindowImpl->mpFrameWindow.get() && pFrame->mpWindowImpl->mpFrameData->mnFocusId ) + { + bAsyncFocusWaiting = true; + break; + } + pFrame = pFrame->mpWindowImpl->mpFrameData->mpNextFrame; + } + + bool bHasFocus = IsWindowFocused(*mpWindowImpl); + + bool bMustNotGrabFocus = false; + // #100242#, check parent hierarchy if some floater prohibits grab focus + + vcl::Window *pParent = this; + while( pParent ) + { + if ((pParent->GetStyle() & WB_SYSTEMFLOATWIN) && !(pParent->GetStyle() & WB_MOVEABLE)) + { + bMustNotGrabFocus = true; + break; + } + if (!pParent->mpWindowImpl) + break; + pParent = pParent->mpWindowImpl->mpParent; + } + + if ( !(( pSVData->mpWinData->mpFocusWin.get() != this && + !mpWindowImpl->mbInDispose ) || + ( bAsyncFocusWaiting && !bHasFocus && !bMustNotGrabFocus )) ) + return; + + // EndExtTextInput if it is not the same window + if (pSVData->mpWinData->mpExtTextInputWin + && (pSVData->mpWinData->mpExtTextInputWin.get() != this)) + pSVData->mpWinData->mpExtTextInputWin->EndExtTextInput(); + + // mark this windows as the last FocusWindow + vcl::Window* pOverlapWindow = ImplGetFirstOverlapWindow(); + if (pOverlapWindow->mpWindowImpl) + pOverlapWindow->mpWindowImpl->mpLastFocusWindow = this; + mpWindowImpl->mpFrameData->mpFocusWin = this; + + if( !bHasFocus ) + { + // menu windows never get the system focus + // the application will keep the focus + if( bMustNotGrabFocus ) + return; + else + { + // here we already switch focus as ToTop() + // should not give focus to another window + mpWindowImpl->mpFrame->ToTop( SalFrameToTop::GrabFocus | SalFrameToTop::GrabFocusOnly ); + return; + } + } + + VclPtr<vcl::Window> pOldFocusWindow = pSVData->mpWinData->mpFocusWin; + + pSVData->mpWinData->mpFocusWin = this; + + if ( pOldFocusWindow && pOldFocusWindow->mpWindowImpl ) + { + // Cursor hidden + if ( pOldFocusWindow->mpWindowImpl->mpCursor ) + pOldFocusWindow->mpWindowImpl->mpCursor->ImplHide(); + } + + // !!!!! due to old SV-Office Activate/Deactivate handling + // !!!!! first as before + if ( pOldFocusWindow ) + { + // remember Focus + vcl::Window* pOldOverlapWindow = pOldFocusWindow->ImplGetFirstOverlapWindow(); + vcl::Window* pNewOverlapWindow = ImplGetFirstOverlapWindow(); + if ( pOldOverlapWindow != pNewOverlapWindow ) + ImplCallFocusChangeActivate( pNewOverlapWindow, pOldOverlapWindow ); + } + else + { + vcl::Window* pNewOverlapWindow = ImplGetFirstOverlapWindow(); + if ( pNewOverlapWindow && pNewOverlapWindow->mpWindowImpl ) + { + vcl::Window* pNewRealWindow = pNewOverlapWindow->ImplGetWindow(); + pNewOverlapWindow->mpWindowImpl->mbActive = true; + pNewOverlapWindow->Activate(); + if ( pNewRealWindow != pNewOverlapWindow && pNewRealWindow && pNewRealWindow->mpWindowImpl ) + { + pNewRealWindow->mpWindowImpl->mbActive = true; + pNewRealWindow->Activate(); + } + } + } + + // call Get- and LoseFocus + if ( pOldFocusWindow && ! pOldFocusWindow->isDisposed() ) + { + NotifyEvent aNEvt( MouseNotifyEvent::LOSEFOCUS, pOldFocusWindow ); + if ( !ImplCallPreNotify( aNEvt ) ) + pOldFocusWindow->CompatLoseFocus(); + pOldFocusWindow->ImplCallDeactivateListeners( this ); + } + + if (pSVData->mpWinData->mpFocusWin.get() == this) + { + if ( mpWindowImpl->mpSysObj ) + { + mpWindowImpl->mpFrameData->mpFocusWin = this; + if ( !mpWindowImpl->mpFrameData->mbInSysObjFocusHdl ) + mpWindowImpl->mpSysObj->GrabFocus(); + } + + if (pSVData->mpWinData->mpFocusWin.get() == this) + { + if ( mpWindowImpl->mpCursor ) + mpWindowImpl->mpCursor->ImplShow(); + mpWindowImpl->mbInFocusHdl = true; + mpWindowImpl->mnGetFocusFlags = nFlags; + // if we're changing focus due to closing a popup floating window + // notify the new focus window so it can restore the inner focus + // eg, toolboxes can select their recent active item + if( pOldFocusWindow && + ! pOldFocusWindow->isDisposed() && + ( pOldFocusWindow->GetDialogControlFlags() & DialogControlFlags::FloatWinPopupModeEndCancel ) ) + mpWindowImpl->mnGetFocusFlags |= GetFocusFlags::FloatWinPopupModeEndCancel; + NotifyEvent aNEvt( MouseNotifyEvent::GETFOCUS, this ); + if ( !ImplCallPreNotify( aNEvt ) && !xWindow->isDisposed() ) + CompatGetFocus(); + if( !xWindow->isDisposed() ) + ImplCallActivateListeners( (pOldFocusWindow && ! pOldFocusWindow->isDisposed()) ? pOldFocusWindow : nullptr ); + if( !xWindow->isDisposed() ) + { + mpWindowImpl->mnGetFocusFlags = GetFocusFlags::NONE; + mpWindowImpl->mbInFocusHdl = false; + } + } + } + + ImplNewInputContext(); + +} + +void Window::ImplGrabFocusToDocument( GetFocusFlags nFlags ) +{ + vcl::Window *pWin = this; + while( pWin ) + { + if( !pWin->GetParent() ) + { + pWin->mpWindowImpl->mpFrame->GrabFocus(); + pWin->ImplGetFrameWindow()->GetWindow( GetWindowType::Client )->ImplGrabFocus(nFlags); + return; + } + pWin = pWin->GetParent(); + } +} + +void Window::MouseMove( const MouseEvent& rMEvt ) +{ + NotifyEvent aNEvt( MouseNotifyEvent::MOUSEMOVE, this, &rMEvt ); + EventNotify(aNEvt); +} + +void Window::MouseButtonDown( const MouseEvent& rMEvt ) +{ + NotifyEvent aNEvt( MouseNotifyEvent::MOUSEBUTTONDOWN, this, &rMEvt ); + if (!EventNotify(aNEvt)) + mpWindowImpl->mbMouseButtonDown = true; +} + +void Window::MouseButtonUp( const MouseEvent& rMEvt ) +{ + NotifyEvent aNEvt( MouseNotifyEvent::MOUSEBUTTONUP, this, &rMEvt ); + if (!EventNotify(aNEvt)) + mpWindowImpl->mbMouseButtonUp = true; +} + +void Window::SetMouseTransparent( bool bTransparent ) +{ + + if ( mpWindowImpl->mpBorderWindow ) + mpWindowImpl->mpBorderWindow->SetMouseTransparent( bTransparent ); + + if( mpWindowImpl->mpSysObj ) + mpWindowImpl->mpSysObj->SetMouseTransparent( bTransparent ); + + mpWindowImpl->mbMouseTransparent = bTransparent; +} + +void Window::LocalStartDrag() +{ + ImplGetFrameData()->mbDragging = true; +} + +void Window::CaptureMouse() +{ + ImplSVData* pSVData = ImplGetSVData(); + + // possibly stop tracking + if (pSVData->mpWinData->mpTrackWin.get() != this) + { + if (pSVData->mpWinData->mpTrackWin) + pSVData->mpWinData->mpTrackWin->EndTracking(TrackingEventFlags::Cancel); + } + + if (pSVData->mpWinData->mpCaptureWin.get() != this) + { + pSVData->mpWinData->mpCaptureWin = this; + mpWindowImpl->mpFrame->CaptureMouse( true ); + } +} + +void Window::ReleaseMouse() +{ + if (IsMouseCaptured()) + { + ImplSVData* pSVData = ImplGetSVData(); + pSVData->mpWinData->mpCaptureWin = nullptr; + if (mpWindowImpl && mpWindowImpl->mpFrame) + mpWindowImpl->mpFrame->CaptureMouse( false ); + ImplGenerateMouseMove(); + } +} + +bool Window::IsMouseCaptured() const +{ + return (this == ImplGetSVData()->mpWinData->mpCaptureWin); +} + +void Window::SetPointer( PointerStyle nPointer ) +{ + if ( mpWindowImpl->maPointer == nPointer ) + return; + + mpWindowImpl->maPointer = nPointer; + + // possibly immediately move pointer + if ( !mpWindowImpl->mpFrameData->mbInMouseMove && ImplTestMousePointerSet() ) + mpWindowImpl->mpFrame->SetPointer( ImplGetMousePointer() ); + + VclPtr<vcl::Window> pWin = GetParentWithLOKNotifier(); + if (!pWin) + return; + + PointerStyle aPointer = GetPointer(); + // We don't map all possible pointers hence we need a default + OString aPointerString = "default"; + auto aIt = vcl::gaLOKPointerMap.find(aPointer); + if (aIt != vcl::gaLOKPointerMap.end()) + { + aPointerString = aIt->second; + } + + // issue mouse pointer events only for document windows + // Doc windows' immediate parent SfxFrameViewWindow_Impl is the one with + // parent notifier set during initialization + if ((ImplGetFrameData()->mbDragging && + ImplGetFrameData()->mpMouseDownWin == this) || + (GetParent()->ImplGetWindowImpl()->mbLOKParentNotifier && + GetParent()->ImplGetWindowImpl()->mnLOKWindowId == 0)) + { + pWin->GetLOKNotifier()->libreOfficeKitViewCallback(LOK_CALLBACK_MOUSE_POINTER, aPointerString.getStr()); + } +} + +void Window::EnableChildPointerOverwrite( bool bOverwrite ) +{ + + if ( mpWindowImpl->mbChildPtrOverwrite == bOverwrite ) + return; + + mpWindowImpl->mbChildPtrOverwrite = bOverwrite; + + // possibly immediately move pointer + if ( !mpWindowImpl->mpFrameData->mbInMouseMove && ImplTestMousePointerSet() ) + mpWindowImpl->mpFrame->SetPointer( ImplGetMousePointer() ); +} + +void Window::SetPointerPosPixel( const Point& rPos ) +{ + Point aPos = ImplOutputToFrame( rPos ); + const OutputDevice *pOutDev = GetOutDev(); + if( pOutDev->HasMirroredGraphics() ) + { + if( !IsRTLEnabled() ) + { + pOutDev->ReMirror( aPos ); + } + // mirroring is required here, SetPointerPos bypasses SalGraphics + aPos.setX( GetOutDev()->mpGraphics->mirror2( aPos.X(), *GetOutDev() ) ); + } + else if( GetOutDev()->ImplIsAntiparallel() ) + { + pOutDev->ReMirror( aPos ); + } + mpWindowImpl->mpFrame->SetPointerPos( aPos.X(), aPos.Y() ); +} + +void Window::SetLastMousePos(const Point& rPos) +{ + // Do this conversion, so when GetPointerPosPixel() calls + // ImplFrameToOutput(), we get back the original position. + Point aPos = ImplOutputToFrame(rPos); + mpWindowImpl->mpFrameData->mnLastMouseX = aPos.X(); + mpWindowImpl->mpFrameData->mnLastMouseY = aPos.Y(); +} + +Point Window::GetPointerPosPixel() +{ + + Point aPos( mpWindowImpl->mpFrameData->mnLastMouseX, mpWindowImpl->mpFrameData->mnLastMouseY ); + if( GetOutDev()->ImplIsAntiparallel() ) + { + const OutputDevice *pOutDev = GetOutDev(); + pOutDev->ReMirror( aPos ); + } + return ImplFrameToOutput( aPos ); +} + +Point Window::GetLastPointerPosPixel() +{ + + Point aPos( mpWindowImpl->mpFrameData->mnBeforeLastMouseX, mpWindowImpl->mpFrameData->mnBeforeLastMouseY ); + if( GetOutDev()->ImplIsAntiparallel() ) + { + const OutputDevice *pOutDev = GetOutDev(); + pOutDev->ReMirror( aPos ); + } + return ImplFrameToOutput( aPos ); +} + +void Window::ShowPointer( bool bVisible ) +{ + + if ( mpWindowImpl->mbNoPtrVisible != !bVisible ) + { + mpWindowImpl->mbNoPtrVisible = !bVisible; + + // possibly immediately move pointer + if ( !mpWindowImpl->mpFrameData->mbInMouseMove && ImplTestMousePointerSet() ) + mpWindowImpl->mpFrame->SetPointer( ImplGetMousePointer() ); + } +} + +Window::PointerState Window::GetPointerState() +{ + PointerState aState; + aState.mnState = 0; + + if (mpWindowImpl->mpFrame) + { + SalFrame::SalPointerState aSalPointerState = mpWindowImpl->mpFrame->GetPointerState(); + if( GetOutDev()->ImplIsAntiparallel() ) + { + const OutputDevice *pOutDev = GetOutDev(); + pOutDev->ReMirror( aSalPointerState.maPos ); + } + aState.maPos = ImplFrameToOutput( aSalPointerState.maPos ); + aState.mnState = aSalPointerState.mnState; + } + return aState; +} + +bool Window::IsMouseOver() const +{ + return ImplGetWinData()->mbMouseOver; +} + +void Window::EnterWait() +{ + + mpWindowImpl->mnWaitCount++; + + if ( mpWindowImpl->mnWaitCount == 1 ) + { + // possibly immediately move pointer + if ( !mpWindowImpl->mpFrameData->mbInMouseMove && ImplTestMousePointerSet() ) + mpWindowImpl->mpFrame->SetPointer( ImplGetMousePointer() ); + } +} + +void Window::LeaveWait() +{ + if( !mpWindowImpl ) + return; + + if ( mpWindowImpl->mnWaitCount ) + { + mpWindowImpl->mnWaitCount--; + + if ( !mpWindowImpl->mnWaitCount ) + { + // possibly immediately move pointer + if ( !mpWindowImpl->mpFrameData->mbInMouseMove && ImplTestMousePointerSet() ) + mpWindowImpl->mpFrame->SetPointer( ImplGetMousePointer() ); + } + } +} + +bool Window::ImplStopDnd() +{ + bool bRet = false; + if( mpWindowImpl->mpFrameData && mpWindowImpl->mpFrameData->mxDropTargetListener.is() ) + { + bRet = true; + mpWindowImpl->mpFrameData->mxDropTarget.clear(); + mpWindowImpl->mpFrameData->mxDragSource.clear(); + mpWindowImpl->mpFrameData->mxDropTargetListener.clear(); + } + + return bRet; +} + +void Window::ImplStartDnd() +{ + GetDropTarget(); +} + +Reference< css::datatransfer::dnd::XDropTarget > Window::GetDropTarget() +{ + if( !mpWindowImpl ) + return Reference< css::datatransfer::dnd::XDropTarget >(); + + if( ! mpWindowImpl->mxDNDListenerContainer.is() ) + { + sal_Int8 nDefaultActions = 0; + + if( mpWindowImpl->mpFrameData ) + { + if( ! mpWindowImpl->mpFrameData->mxDropTarget.is() ) + { + // initialization is done in GetDragSource + GetDragSource(); + } + + if( mpWindowImpl->mpFrameData->mxDropTarget.is() ) + { + nDefaultActions = mpWindowImpl->mpFrameData->mxDropTarget->getDefaultActions(); + + if( ! mpWindowImpl->mpFrameData->mxDropTargetListener.is() ) + { + mpWindowImpl->mpFrameData->mxDropTargetListener = new DNDEventDispatcher( mpWindowImpl->mpFrameWindow ); + + try + { + mpWindowImpl->mpFrameData->mxDropTarget->addDropTargetListener( mpWindowImpl->mpFrameData->mxDropTargetListener ); + + // register also as drag gesture listener if directly supported by drag source + Reference< css::datatransfer::dnd::XDragGestureRecognizer > xDragGestureRecognizer( + mpWindowImpl->mpFrameData->mxDragSource, UNO_QUERY); + + if( xDragGestureRecognizer.is() ) + { + xDragGestureRecognizer->addDragGestureListener( + Reference< css::datatransfer::dnd::XDragGestureListener > (mpWindowImpl->mpFrameData->mxDropTargetListener, UNO_QUERY)); + } + else + mpWindowImpl->mpFrameData->mbInternalDragGestureRecognizer = true; + + } + catch (const RuntimeException&) + { + // release all instances + mpWindowImpl->mpFrameData->mxDropTarget.clear(); + mpWindowImpl->mpFrameData->mxDragSource.clear(); + } + } + } + + } + + mpWindowImpl->mxDNDListenerContainer = static_cast < css::datatransfer::dnd::XDropTarget * > ( new DNDListenerContainer( nDefaultActions ) ); + } + + // this object is located in the same process, so there will be no runtime exception + return Reference< css::datatransfer::dnd::XDropTarget > ( mpWindowImpl->mxDNDListenerContainer, UNO_QUERY ); +} + +Reference< css::datatransfer::dnd::XDragSource > Window::GetDragSource() +{ +#if HAVE_FEATURE_DESKTOP + const SystemEnvData* pEnvData = GetSystemData(); + if (!mpWindowImpl->mpFrameData || !pEnvData) + return Reference<css::datatransfer::dnd::XDragSource>(); + if (mpWindowImpl->mpFrameData->mxDragSource.is()) + return mpWindowImpl->mpFrameData->mxDragSource; + + try + { + SalInstance* pInst = ImplGetSVData()->mpDefInst; + mpWindowImpl->mpFrameData->mxDragSource.set(pInst->CreateDragSource(pEnvData), UNO_QUERY); + mpWindowImpl->mpFrameData->mxDropTarget.set(pInst->CreateDropTarget(pEnvData), UNO_QUERY); + } + catch (const Exception&) + { + mpWindowImpl->mpFrameData->mxDropTarget.clear(); + mpWindowImpl->mpFrameData->mxDragSource.clear(); + } + return mpWindowImpl->mpFrameData->mxDragSource; +#else + return Reference< css::datatransfer::dnd::XDragSource > (); +#endif +} + +Reference< css::datatransfer::dnd::XDragGestureRecognizer > Window::GetDragGestureRecognizer() +{ + return Reference< css::datatransfer::dnd::XDragGestureRecognizer > ( GetDropTarget(), UNO_QUERY ); +} + +} /* namespace vcl */ + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |