1 files changed, 130 insertions, 0 deletions
diff --git a/svx/source/engine3d/e3dsceneupdater.cxx b/svx/source/engine3d/e3dsceneupdater.cxx
new file mode 100644
index 000000000000..8fdaaf3ffc29
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+++ b/svx/source/engine3d/e3dsceneupdater.cxx
@@ -0,0 +1,130 @@
+/*************************************************************************
+ *
+ * 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