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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* 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_svx.hxx"
#include <svx/e3dsceneupdater.hxx>
#include <drawinglayer/geometry/viewinformation3d.hxx>
#include <svx/obj3d.hxx>
#include <svx/scene3d.hxx>
#include <svx/sdr/contact/viewcontactofe3dscene.hxx>
//////////////////////////////////////////////////////////////////////////////
E3DModifySceneSnapRectUpdater::E3DModifySceneSnapRectUpdater(const SdrObject* pObject)
: mpScene(0),
mpViewInformation3D(0)
{
// Secure old 3D transformation stack before modification
if(pObject)
{
const E3dObject* pE3dObject = dynamic_cast< const E3dObject* >(pObject);
if(pE3dObject)
{
mpScene = pE3dObject->GetScene();
if(mpScene && mpScene->GetScene() == mpScene)
{
// if there is a scene and it's the outmost scene, get current 3D range
const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(mpScene->GetViewContact());
const basegfx::B3DRange aAllContentRange(rVCScene.getAllContentRange3D());
if(aAllContentRange.isEmpty())
{
// no content, nothing to do
mpScene = 0;
}
else
{
// secure current 3D transformation stack
mpViewInformation3D = new drawinglayer::geometry::ViewInformation3D(rVCScene.getViewInformation3D(aAllContentRange));
}
}
}
}
}
E3DModifySceneSnapRectUpdater::~E3DModifySceneSnapRectUpdater()
{
if(mpScene && mpViewInformation3D)
{
// after changing parts of the scene, use the secured last 3d transformation stack and the new content
// range to calculate a new, eventually expanded or shrunk, 2D geometry for the scene and apply it.
// Get new content range
const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(mpScene->GetViewContact());
basegfx::B3DRange aAllContentRange(rVCScene.getAllContentRange3D());
// only change when there is still content; else let scene stay at old SnapRect
if(!aAllContentRange.isEmpty())
{
// check if object transform of scene has changed
if(mpViewInformation3D->getObjectTransformation() != mpScene->GetTransform())
{
// If Yes, it needs to be updated since it's - for historical reasons -
// part of the basic 3d transformation stack of the scene
drawinglayer::geometry::ViewInformation3D* pNew = new drawinglayer::geometry::ViewInformation3D(
mpScene->GetTransform(), // replace object transformation with new local transform
mpViewInformation3D->getOrientation(),
mpViewInformation3D->getProjection(),
mpViewInformation3D->getDeviceToView(),
mpViewInformation3D->getViewTime(),
mpViewInformation3D->getExtendedInformationSequence());
delete mpViewInformation3D;
mpViewInformation3D = pNew;
}
// transform content range to scene-relative coordinates using old 3d transformation stack
aAllContentRange.transform(mpViewInformation3D->getObjectToView());
// build 2d relative content range
basegfx::B2DRange aSnapRange(
aAllContentRange.getMinX(), aAllContentRange.getMinY(),
aAllContentRange.getMaxX(), aAllContentRange.getMaxY());
// transform to 2D world coordiantes using scene's 2D transformation
aSnapRange.transform(rVCScene.getObjectTransformation());
// snap to (old) integer
const Rectangle aNewSnapRect(
sal_Int32(floor(aSnapRange.getMinX())), sal_Int32(floor(aSnapRange.getMinY())),
sal_Int32(ceil(aSnapRange.getMaxX())), sal_Int32(ceil(aSnapRange.getMaxY())));
// set as new SnapRect and invalidate bound volume
if(mpScene->GetSnapRect() != aNewSnapRect)
{
mpScene->SetSnapRect(aNewSnapRect);
mpScene->InvalidateBoundVolume();
}
}
}
delete mpViewInformation3D;
}
//////////////////////////////////////////////////////////////////////////////
// eof
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