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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: userpaintoverlay.cxx,v $
* $Revision: 1.3 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_slideshow.hxx"
#include <canvas/debug.hxx>
#include <comphelper/anytostring.hxx>
#include <cppuhelper/exc_hlp.hxx>
#include <com/sun/star/awt/MouseButton.hpp>
#include <com/sun/star/presentation/XSlideShowView.hpp>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <cppcanvas/basegfxfactory.hxx>
#include "activity.hxx"
#include "activitiesqueue.hxx"
#include "slideshowcontext.hxx"
#include "userpaintoverlay.hxx"
#include "mouseeventhandler.hxx"
#include "eventmultiplexer.hxx"
#include "screenupdater.hxx"
#include "vieweventhandler.hxx"
#include <boost/bind.hpp>
#include <boost/noncopyable.hpp>
using namespace ::com::sun::star;
namespace slideshow
{
namespace internal
{
class PaintOverlayHandler : public MouseEventHandler,
public ViewEventHandler
{
public:
PaintOverlayHandler( const RGBColor& rStrokeColor,
double nStrokeWidth,
ActivitiesQueue& rActivitiesQueue,
ScreenUpdater& rScreenUpdater,
const UnoViewContainer& rViews ) :
mrActivitiesQueue( rActivitiesQueue ),
mrScreenUpdater( rScreenUpdater ),
maViews(),
maStrokeColor( rStrokeColor ),
mnStrokeWidth( nStrokeWidth ),
maLastPoint(),
maLastMouseDownPos(),
mbIsLastPointValid( false ),
mbIsLastMouseDownPosValid( false )
{
std::for_each( rViews.begin(),
rViews.end(),
boost::bind( &PaintOverlayHandler::viewAdded,
this,
_1 ));
}
virtual void dispose()
{
maViews.clear();
}
// ViewEventHandler methods
virtual void viewAdded( const UnoViewSharedPtr& rView )
{
maViews.push_back( rView );
}
virtual void viewRemoved( const UnoViewSharedPtr& rView )
{
maViews.erase( ::std::remove( maViews.begin(),
maViews.end(),
rView ) );
}
virtual void viewChanged( const UnoViewSharedPtr& /*rView*/ )
{
// TODO(F2): for persistent drawings, need to store
// polygon and repaint here.
}
virtual void viewsChanged()
{
// TODO(F2): for persistent drawings, need to store
// polygon and repaint here.
}
// MouseEventHandler methods
virtual bool handleMousePressed( const awt::MouseEvent& e )
{
if (e.Buttons != awt::MouseButton::LEFT)
return false;
maLastMouseDownPos.setX( e.X );
maLastMouseDownPos.setY( e.Y );
mbIsLastMouseDownPosValid = true;
// eat mouse click (though we don't process it
// _directly_, it enables the drag mode
return true;
}
virtual bool handleMouseReleased( const awt::MouseEvent& e )
{
if (e.Buttons != awt::MouseButton::LEFT)
return false;
// check, whether up- and down press are on exactly
// the same pixel. If that's the case, ignore the
// click, and pass on the event to low-prio
// handlers. This effectively permits effect
// advancements via clicks also when user paint is
// enabled.
if( mbIsLastMouseDownPosValid &&
::basegfx::B2DPoint( e.X,
e.Y ) == maLastMouseDownPos )
{
mbIsLastMouseDownPosValid = false;
return false;
}
// invalidate, next downpress will have to start a new
// polygon.
mbIsLastPointValid = false;
// eat mouse click (though we don't process it
// _directly_, it enables the drag mode
return true;
}
virtual bool handleMouseEntered( const awt::MouseEvent& e )
{
mbIsLastPointValid = true;
maLastPoint.setX( e.X );
maLastPoint.setY( e.Y );
return true;
}
virtual bool handleMouseExited( const awt::MouseEvent& )
{
mbIsLastPointValid = false;
mbIsLastMouseDownPosValid = false;
return true;
}
virtual bool handleMouseDragged( const awt::MouseEvent& e )
{
if( !mbIsLastPointValid )
{
mbIsLastPointValid = true;
maLastPoint.setX( e.X );
maLastPoint.setY( e.Y );
}
else
{
::basegfx::B2DPolygon aPoly;
aPoly.append( maLastPoint );
maLastPoint.setX( e.X );
maLastPoint.setY( e.Y );
aPoly.append( maLastPoint );
// paint to all views
for( UnoViewVector::iterator aIter=maViews.begin(), aEnd=maViews.end();
aIter!=aEnd;
++aIter )
{
::cppcanvas::PolyPolygonSharedPtr pPolyPoly(
::cppcanvas::BaseGfxFactory::getInstance().createPolyPolygon( (*aIter)->getCanvas(),
aPoly ) );
if( pPolyPoly )
{
pPolyPoly->setRGBALineColor( maStrokeColor.getIntegerColor() );
pPolyPoly->draw();
}
}
// screen update necessary to show painting
mrScreenUpdater.notifyUpdate();
}
// mouse events captured
return true;
}
virtual bool handleMouseMoved( const awt::MouseEvent& /*e*/ )
{
// not used here
return false; // did not handle the event
}
private:
ActivitiesQueue& mrActivitiesQueue;
ScreenUpdater& mrScreenUpdater;
UnoViewVector maViews;
RGBColor maStrokeColor;
double mnStrokeWidth;
basegfx::B2DPoint maLastPoint;
basegfx::B2DPoint maLastMouseDownPos;
bool mbIsLastPointValid;
bool mbIsLastMouseDownPosValid;
};
UserPaintOverlaySharedPtr UserPaintOverlay::create( const RGBColor& rStrokeColor,
double nStrokeWidth,
const SlideShowContext& rContext )
{
UserPaintOverlaySharedPtr pRet( new UserPaintOverlay( rStrokeColor,
nStrokeWidth,
rContext ));
return pRet;
}
UserPaintOverlay::UserPaintOverlay( const RGBColor& rStrokeColor,
double nStrokeWidth,
const SlideShowContext& rContext ) :
mpHandler( new PaintOverlayHandler( rStrokeColor,
nStrokeWidth,
rContext.mrActivitiesQueue,
rContext.mrScreenUpdater,
rContext.mrViewContainer )),
mrMultiplexer( rContext.mrEventMultiplexer )
{
mrMultiplexer.addClickHandler( mpHandler, 3.0 );
mrMultiplexer.addMouseMoveHandler( mpHandler, 3.0 );
mrMultiplexer.addViewHandler( mpHandler );
}
UserPaintOverlay::~UserPaintOverlay()
{
try
{
mrMultiplexer.removeMouseMoveHandler( mpHandler );
mrMultiplexer.removeClickHandler( mpHandler );
mrMultiplexer.removeViewHandler( mpHandler );
mpHandler->dispose();
}
catch (uno::Exception &) {
OSL_ENSURE( false, rtl::OUStringToOString(
comphelper::anyToString(
cppu::getCaughtException() ),
RTL_TEXTENCODING_UTF8 ).getStr() );
}
}
}
}
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