/* -*- 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 <svx/dlgctl3d.hxx>
#include <svx/strings.hrc>
#include <svx/view3d.hxx>
#include <svx/fmmodel.hxx>
#include <svl/itempool.hxx>
#include <svx/fmpage.hxx>
#include <svx/sphere3d.hxx>
#include <svx/cube3d.hxx>
#include <svx/scene3d.hxx>
#include <vcl/svapp.hxx>
#include <svx/helperhittest3d.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b3dpolygon.hxx>
#include <polygn3d.hxx>
#include <svx/xfillit0.hxx>
#include <svx/xflclit.hxx>
#include <svx/xlineit0.hxx>
#include <svx/xlnclit.hxx>
#include <svx/xlnwtit.hxx>
#include <helpids.h>
#include <svx/dialmgr.hxx>
#include <tools/helpers.hxx>
#include <vcl/settings.hxx>

using namespace com::sun::star;

Svx3DPreviewControl::Svx3DPreviewControl()
    : mnObjectType(SvxPreviewObjectType::SPHERE)
{
}

void Svx3DPreviewControl::SetDrawingArea(weld::DrawingArea* pDrawingArea)
{
    Size aSize(pDrawingArea->get_ref_device().LogicToPixel(Size(80, 100), MapMode(MapUnit::MapAppFont)));
    pDrawingArea->set_size_request(aSize.Width(), aSize.Height());
    CustomWidgetController::SetDrawingArea(pDrawingArea);
    SetOutputSizePixel(aSize);

    Construct();
}

void Svx3DPreviewControl::ClearPageView()
{
    mp3DView->ClearPageView();
}

Svx3DPreviewControl::~Svx3DPreviewControl()
{
    mp3DObj.clear();
    mxFmPage.clear();
    mpScene.clear();
    mp3DView.reset();
    mpModel.reset();
}

void Svx3DPreviewControl::Construct()
{
    // Do never mirror the preview window.  This explicitly includes right
    // to left writing environments.
    EnableRTL (false);
    OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
    rDevice.SetMapMode(MapMode(MapUnit::Map100thMM));

    // Model
    mpModel.reset(new FmFormModel());

    // Page
    mxFmPage = new FmFormPage( *mpModel );
    mpModel->InsertPage( mxFmPage.get(), 0 );

    // 3D View
    mp3DView.reset(new E3dView(*mpModel, &rDevice));
    mp3DView->SetBufferedOutputAllowed(true);
    mp3DView->SetBufferedOverlayAllowed(true);

    // 3D Scene
    mpScene = new E3dScene(*mpModel);

    // initially create object
    SetObjectType(SvxPreviewObjectType::SPHERE);

    // camera and perspective
    Camera3D rCamera  = mpScene->GetCamera();
    const basegfx::B3DRange& rVolume = mpScene->GetBoundVolume();
    double fW = rVolume.getWidth();
    double fH = rVolume.getHeight();
    double fCamZ = rVolume.getMaxZ() + ((fW + fH) / 2.0);

    rCamera.SetAutoAdjustProjection(false);
    rCamera.SetViewWindow(- fW / 2, - fH / 2, fW, fH);
    basegfx::B3DPoint aLookAt;
    double fDefaultCamPosZ = mp3DView->GetDefaultCamPosZ();
    basegfx::B3DPoint aCamPos(0.0, 0.0, fCamZ < fDefaultCamPosZ ? fDefaultCamPosZ : fCamZ);
    rCamera.SetPosAndLookAt(aCamPos, aLookAt);
    double fDefaultCamFocal = mp3DView->GetDefaultCamFocal();
    rCamera.SetFocalLength(fDefaultCamFocal);

    mpScene->SetCamera( rCamera );
    mxFmPage->InsertObject( mpScene.get() );

    basegfx::B3DHomMatrix aRotation;
    aRotation.rotate(basegfx::deg2rad( 25 ), 0.0, 0.0);
    aRotation.rotate(0.0, basegfx::deg2rad( 40 ), 0.0);
    mpScene->SetTransform(aRotation * mpScene->GetTransform());

    // invalidate SnapRects of objects
    mpScene->SetBoundAndSnapRectsDirty();

    SfxItemSetFixed<XATTR_LINESTYLE, XATTR_LINESTYLE,
        XATTR_FILL_FIRST, XATTR_FILLBITMAP> aSet( mpModel->GetItemPool() );
    aSet.Put( XLineStyleItem( drawing::LineStyle_NONE ) );
    aSet.Put( XFillStyleItem( drawing::FillStyle_SOLID ) );
    aSet.Put( XFillColorItem( u""_ustr, COL_WHITE ) );

    mpScene->SetMergedItemSet(aSet);

    // PageView
    SdrPageView* pPageView = mp3DView->ShowSdrPage( mxFmPage.get() );
    mp3DView->hideMarkHandles();

    // mark scene
    mp3DView->MarkObj( mpScene.get(), pPageView );
}

void Svx3DPreviewControl::Resize()
{
    // size of page
    Size aSize(GetOutputSizePixel());
    aSize = GetDrawingArea()->get_ref_device().PixelToLogic(aSize);
    mxFmPage->SetSize(aSize);

    // set size
    Size aObjSize( aSize.Width()*5/6, aSize.Height()*5/6 );
    Point aObjPoint( (aSize.Width() - aObjSize.Width()) / 2,
        (aSize.Height() - aObjSize.Height()) / 2);
    tools::Rectangle aRect( aObjPoint, aObjSize);
    mpScene->SetSnapRect( aRect );
}

void Svx3DPreviewControl::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
{
    mp3DView->CompleteRedraw(&rRenderContext, vcl::Region(rRect));
}

bool Svx3DPreviewControl::MouseButtonDown(const MouseEvent& rMEvt)
{
    if (rMEvt.IsShift() && rMEvt.IsMod1())
    {
        if(SvxPreviewObjectType::SPHERE == GetObjectType())
        {
            SetObjectType(SvxPreviewObjectType::CUBE);
        }
        else
        {
            SetObjectType(SvxPreviewObjectType::SPHERE);
        }
    }
    return false;
}

void Svx3DPreviewControl::SetObjectType(SvxPreviewObjectType nType)
{
    if(mnObjectType == nType && mp3DObj)
        return;

    SfxItemSetFixed<SDRATTR_START, SDRATTR_END> aSet(mpModel->GetItemPool());
    mnObjectType = nType;

    if( mp3DObj )
    {
        aSet.Put(mp3DObj->GetMergedItemSet());
        mpScene->RemoveObject( mp3DObj->GetOrdNum() );
        mp3DObj.clear();
    }

    switch( nType )
    {
        case SvxPreviewObjectType::SPHERE:
        {
            mp3DObj = new E3dSphereObj(
                *mpModel,
                mp3DView->Get3DDefaultAttributes(),
                basegfx::B3DPoint( 0, 0, 0 ),
                basegfx::B3DVector( 5000, 5000, 5000 ));
        }
        break;

        case SvxPreviewObjectType::CUBE:
        {
            mp3DObj = new E3dCubeObj(
                *mpModel,
                mp3DView->Get3DDefaultAttributes(),
                basegfx::B3DPoint( -2500, -2500, -2500 ),
                basegfx::B3DVector( 5000, 5000, 5000 ));
        }
        break;
    }

    if (mp3DObj)
    {
        mpScene->InsertObject( mp3DObj.get() );
        mp3DObj->SetMergedItemSet(aSet);
    }

    Invalidate();
}

SfxItemSet const & Svx3DPreviewControl::Get3DAttributes() const
{
    return mp3DObj->GetMergedItemSet();
}

void Svx3DPreviewControl::Set3DAttributes( const SfxItemSet& rAttr )
{
    mp3DObj->SetMergedItemSet(rAttr, true);
    Resize();
    Invalidate();
}

#define RADIUS_LAMP_PREVIEW_SIZE    (4500.0)
#define RADIUS_LAMP_SMALL           (600.0)
#define RADIUS_LAMP_BIG             (1000.0)
#define NO_LIGHT_SELECTED           (0xffffffff)
#define MAX_NUMBER_LIGHTS              (8)

const sal_Int32 g_nInteractionStartDistance = 5 * 5 * 2;

Svx3DLightControl::Svx3DLightControl()
:   maSelectedLight(NO_LIGHT_SELECTED),
    maLightObjects(MAX_NUMBER_LIGHTS, nullptr),
    mfRotateX(-20.0),
    mfRotateY(45.0),
    mfRotateZ(0.0),
    mfSaveActionStartHor(0.0),
    mfSaveActionStartVer(0.0),
    mfSaveActionStartRotZ(0.0),
    mbMouseMoved(false),
    mbMouseCaptured(false),
    mbGeometrySelected(false)
{
}

void Svx3DLightControl::SetDrawingArea(weld::DrawingArea* pDrawingArea)
{
    Svx3DPreviewControl::SetDrawingArea(pDrawingArea);
    Construct2();
}

void Svx3DLightControl::Construct2()
{
    {
        // hide all page stuff, use control background (normally gray)
        const Color aDialogColor(Application::GetSettings().GetStyleSettings().GetDialogColor());
        mp3DView->SetPageVisible(false);
        mp3DView->SetApplicationBackgroundColor(aDialogColor);
        mp3DView->SetApplicationDocumentColor(aDialogColor);
    }

    {
        // create invisible expansion object
        const double fMaxExpansion(RADIUS_LAMP_BIG + RADIUS_LAMP_PREVIEW_SIZE);
        mpExpansionObject = new E3dCubeObj(
            *mpModel,
            mp3DView->Get3DDefaultAttributes(),
            basegfx::B3DPoint(-fMaxExpansion, -fMaxExpansion, -fMaxExpansion),
            basegfx::B3DVector(2.0 * fMaxExpansion, 2.0 * fMaxExpansion, 2.0 * fMaxExpansion));
        mpScene->InsertObject( mpExpansionObject.get() );
        SfxItemSet aSet(mpModel->GetItemPool());
        aSet.Put( XLineStyleItem( drawing::LineStyle_NONE ) );
        aSet.Put( XFillStyleItem( drawing::FillStyle_NONE ) );
        mpExpansionObject->SetMergedItemSet(aSet);
    }

    {
        // create lamp control object (Yellow lined object)
        // base circle
        const basegfx::B2DPolygon a2DCircle(basegfx::utils::createPolygonFromCircle(basegfx::B2DPoint(0.0, 0.0), RADIUS_LAMP_PREVIEW_SIZE));
        basegfx::B3DPolygon a3DCircle(basegfx::utils::createB3DPolygonFromB2DPolygon(a2DCircle));
        basegfx::B3DHomMatrix aTransform;

        aTransform.rotate(M_PI_2, 0.0, 0.0);
        aTransform.translate(0.0, -RADIUS_LAMP_PREVIEW_SIZE, 0.0);
        a3DCircle.transform(aTransform);

        // create object for it
        mpLampBottomObject = new E3dPolygonObj(
            *mpModel,
            basegfx::B3DPolyPolygon(a3DCircle));
        mpScene->InsertObject( mpLampBottomObject.get() );

        // half circle with stand
        basegfx::B2DPolygon a2DHalfCircle;
        a2DHalfCircle.append(basegfx::B2DPoint(RADIUS_LAMP_PREVIEW_SIZE, 0.0));
        a2DHalfCircle.append(basegfx::B2DPoint(RADIUS_LAMP_PREVIEW_SIZE, -RADIUS_LAMP_PREVIEW_SIZE));
        a2DHalfCircle.append(basegfx::utils::createPolygonFromEllipseSegment(
            basegfx::B2DPoint(0.0, 0.0), RADIUS_LAMP_PREVIEW_SIZE, RADIUS_LAMP_PREVIEW_SIZE, 2 * M_PI - M_PI_2, M_PI_2));
        basegfx::B3DPolygon a3DHalfCircle(basegfx::utils::createB3DPolygonFromB2DPolygon(a2DHalfCircle));

        // create object for it
        mpLampShaftObject = new E3dPolygonObj(
            *mpModel,
            basegfx::B3DPolyPolygon(a3DHalfCircle));
        mpScene->InsertObject( mpLampShaftObject.get() );

        // initially invisible
        SfxItemSet aSet(mpModel->GetItemPool());
        aSet.Put( XLineStyleItem( drawing::LineStyle_NONE ) );
        aSet.Put( XFillStyleItem( drawing::FillStyle_NONE ) );

        mpLampBottomObject->SetMergedItemSet(aSet);
        mpLampShaftObject->SetMergedItemSet(aSet);
    }

    {
        // change camera settings
        Camera3D rCamera  = mpScene->GetCamera();
        const basegfx::B3DRange& rVolume = mpScene->GetBoundVolume();
        double fW = rVolume.getWidth();
        double fH = rVolume.getHeight();
        double fCamZ = rVolume.getMaxZ() + ((fW + fH) / 2.0);

        rCamera.SetAutoAdjustProjection(false);
        rCamera.SetViewWindow(- fW / 2, - fH / 2, fW, fH);
        basegfx::B3DPoint aLookAt;
        double fDefaultCamPosZ = mp3DView->GetDefaultCamPosZ();
        basegfx::B3DPoint aCamPos(0.0, 0.0, fCamZ < fDefaultCamPosZ ? fDefaultCamPosZ : fCamZ);
        rCamera.SetPosAndLookAt(aCamPos, aLookAt);
        double fDefaultCamFocal = mp3DView->GetDefaultCamFocal();
        rCamera.SetFocalLength(fDefaultCamFocal);

        mpScene->SetCamera( rCamera );

        basegfx::B3DHomMatrix aNeutral;
        mpScene->SetTransform(aNeutral);
    }

    // invalidate SnapRects of objects
    mpScene->SetBoundAndSnapRectsDirty();
}

void Svx3DLightControl::ConstructLightObjects()
{
    for(sal_uInt32 a(0); a < MAX_NUMBER_LIGHTS; a++)
    {
        // get rid of possible existing light object
        if(maLightObjects[a])
        {
            mpScene->RemoveObject(maLightObjects[a]->GetOrdNum());
            maLightObjects[a] = nullptr;
        }

        if(GetLightOnOff(a))
        {
            const bool bIsSelectedLight(a == maSelectedLight);
            basegfx::B3DVector aDirection(GetLightDirection(a));
            aDirection.normalize();
            aDirection *= RADIUS_LAMP_PREVIEW_SIZE;

            const double fLampSize(bIsSelectedLight ? RADIUS_LAMP_BIG : RADIUS_LAMP_SMALL);
            rtl::Reference<E3dObject> pNewLight = new E3dSphereObj(
                *mpModel,
                mp3DView->Get3DDefaultAttributes(),
                basegfx::B3DPoint( 0, 0, 0 ),
                basegfx::B3DVector( fLampSize, fLampSize, fLampSize));
            mpScene->InsertObject(pNewLight.get());

            basegfx::B3DHomMatrix aTransform;
            aTransform.translate(aDirection.getX(), aDirection.getY(), aDirection.getZ());
            pNewLight->SetTransform(aTransform);

            SfxItemSet aSet(mpModel->GetItemPool());
            aSet.Put( XLineStyleItem( drawing::LineStyle_NONE ) );
            aSet.Put( XFillStyleItem( drawing::FillStyle_SOLID ) );
            aSet.Put( XFillColorItem(OUString(), GetLightColor(a)));
            pNewLight->SetMergedItemSet(aSet);

            maLightObjects[a] = pNewLight.get();
        }
    }
}

void Svx3DLightControl::AdaptToSelectedLight()
{
    if(NO_LIGHT_SELECTED == maSelectedLight)
    {
        // make mpLampBottomObject/mpLampShaftObject invisible
        SfxItemSet aSet(mpModel->GetItemPool());
        aSet.Put( XLineStyleItem( drawing::LineStyle_NONE ) );
        aSet.Put( XFillStyleItem( drawing::FillStyle_NONE ) );
        mpLampBottomObject->SetMergedItemSet(aSet);
        mpLampShaftObject->SetMergedItemSet(aSet);
    }
    else
    {
        basegfx::B3DVector aDirection(GetLightDirection(maSelectedLight));
        aDirection.normalize();

        // make mpLampBottomObject/mpLampShaftObject visible (yellow hairline)
        SfxItemSet aSet(mpModel->GetItemPool());
        aSet.Put( XLineStyleItem( drawing::LineStyle_SOLID ) );
        aSet.Put( XLineColorItem(OUString(), COL_YELLOW));
        aSet.Put( XLineWidthItem(0));
        aSet.Put( XFillStyleItem( drawing::FillStyle_NONE ) );
        mpLampBottomObject->SetMergedItemSet(aSet);
        mpLampShaftObject->SetMergedItemSet(aSet);

        // adapt transformation of mpLampShaftObject
        basegfx::B3DHomMatrix aTransform;
        double fRotateY(0.0);

        if(!basegfx::fTools::equalZero(aDirection.getZ()) || !basegfx::fTools::equalZero(aDirection.getX()))
        {
            fRotateY = atan2(-aDirection.getZ(), aDirection.getX());
        }

        aTransform.rotate(0.0, fRotateY, 0.0);
        mpLampShaftObject->SetTransform(aTransform);

        // adapt transformation of selected light
        E3dObject* pSelectedLight = maLightObjects[sal_Int32(maSelectedLight)];

        if(pSelectedLight)
        {
            aTransform.identity();
            aTransform.translate(
                aDirection.getX() * RADIUS_LAMP_PREVIEW_SIZE,
                aDirection.getY() * RADIUS_LAMP_PREVIEW_SIZE,
                aDirection.getZ() * RADIUS_LAMP_PREVIEW_SIZE);
            pSelectedLight->SetTransform(aTransform);
        }
    }
}

void Svx3DLightControl::TrySelection(Point aPosPixel)
{
    if(!mpScene)
        return;

    const Point aPosLogic(GetDrawingArea()->get_ref_device().PixelToLogic(aPosPixel));
    const basegfx::B2DPoint aPoint(aPosLogic.X(), aPosLogic.Y());
    std::vector< const E3dCompoundObject* > aResult;
    getAllHit3DObjectsSortedFrontToBack(aPoint, *mpScene, aResult);

    if(aResult.empty())
        return;

    // exclude expansion object which will be part of
    // the hits. It's invisible, but for HitTest, it's included
    const E3dCompoundObject* pResult = nullptr;

    for(auto const & b: aResult)
    {
        if(b && b != mpExpansionObject.get())
        {
            pResult = b;
            break;
        }
    }

    if(pResult == mp3DObj.get())
    {
        if(!mbGeometrySelected)
        {
            mbGeometrySelected = true;
            maSelectedLight = NO_LIGHT_SELECTED;
            ConstructLightObjects();
            AdaptToSelectedLight();
            Invalidate();

            if(maSelectionChangeCallback.IsSet())
            {
                maSelectionChangeCallback.Call(this);
            }
        }
    }
    else
    {
        sal_uInt32 aNewSelectedLight(NO_LIGHT_SELECTED);

        for(sal_uInt32 a(0); a < MAX_NUMBER_LIGHTS; a++)
        {
            if(maLightObjects[a] && maLightObjects[a] == pResult)
            {
                aNewSelectedLight = a;
            }
        }

        if(aNewSelectedLight != maSelectedLight)
        {
            SelectLight(aNewSelectedLight);

            if(maSelectionChangeCallback.IsSet())
            {
                maSelectionChangeCallback.Call(this);
            }
        }
    }
}

void Svx3DLightControl::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
{
    Svx3DPreviewControl::Paint(rRenderContext, rRect);
}

tools::Rectangle Svx3DLightControl::GetFocusRect()
{
    if (!HasFocus())
        return tools::Rectangle();
    Size aFocusSize = GetOutputSizePixel();
    aFocusSize.AdjustWidth( -4 );
    aFocusSize.AdjustHeight( -4 );
    return tools::Rectangle(Point(2, 2), aFocusSize);
}

bool Svx3DLightControl::MouseButtonDown( const MouseEvent& rMEvt )
{
    bool bCallParent(true);

    // switch state
    if(rMEvt.IsLeft())
    {
        if(IsSelectionValid() || mbGeometrySelected)
        {
            mbMouseMoved = false;
            bCallParent = false;
            maActionStartPoint = rMEvt.GetPosPixel();
            CaptureMouse();
            mbMouseCaptured = true;
        }
        else
        {
            // Single click without moving much trying to do a selection
            TrySelection(rMEvt.GetPosPixel());
            bCallParent = false;
        }
    }

    // call parent
    if (bCallParent)
        return Svx3DPreviewControl::MouseButtonDown(rMEvt);
    return true;
}

bool Svx3DLightControl::MouseMove(const MouseEvent& rMEvt)
{
    if (!mbMouseCaptured)
        return false;

    Point aDeltaPos = rMEvt.GetPosPixel() - maActionStartPoint;

    if(!mbMouseMoved)
    {
        if(sal_Int32(aDeltaPos.X() * aDeltaPos.X() + aDeltaPos.Y() * aDeltaPos.Y()) > g_nInteractionStartDistance)
        {
            if(mbGeometrySelected)
            {
                GetRotation(mfSaveActionStartVer, mfSaveActionStartHor, mfSaveActionStartRotZ);
            }
            else
            {
                // interaction start, save values
                GetPosition(mfSaveActionStartHor, mfSaveActionStartVer);
            }

            mbMouseMoved = true;
        }
    }

    if(mbMouseMoved)
    {
        if(mbGeometrySelected)
        {
            double fNewRotX = mfSaveActionStartVer - basegfx::deg2rad(aDeltaPos.Y());
            double fNewRotY = mfSaveActionStartHor + basegfx::deg2rad(aDeltaPos.X());

            // cut horizontal
            while(fNewRotY < 0.0)
            {
                fNewRotY += 2 * M_PI;
            }

            while(fNewRotY >= 2 * M_PI)
            {
                fNewRotY -= 2 * M_PI;
            }

            // cut vertical
            if(fNewRotX < -M_PI_2)
            {
                fNewRotX = -M_PI_2;
            }

            if(fNewRotX > M_PI_2)
            {
                fNewRotX = M_PI_2;
            }

            SetRotation(fNewRotX, fNewRotY, mfSaveActionStartRotZ);

            if(maChangeCallback.IsSet())
            {
                maChangeCallback.Call(this);
            }
        }
        else
        {
            // interaction in progress
            double fNewPosHor = mfSaveActionStartHor + static_cast<double>(aDeltaPos.X());
            double fNewPosVer = mfSaveActionStartVer - static_cast<double>(aDeltaPos.Y());

            // cut horizontal
            fNewPosHor = NormAngle360(fNewPosHor);

            // cut vertical
            if(fNewPosVer < -90.0)
            {
                fNewPosVer = -90.0;
            }

            if(fNewPosVer > 90.0)
            {
                fNewPosVer = 90.0;
            }

            SetPosition(fNewPosHor, fNewPosVer);

            if(maChangeCallback.IsSet())
            {
                maChangeCallback.Call(this);
            }
        }
    }
    return true;
}

bool Svx3DLightControl::MouseButtonUp(const MouseEvent& rMEvt)
{
    if (!mbMouseCaptured)
        return false;
    ReleaseMouse();
    mbMouseCaptured = false;

    if (mbMouseMoved)
    {
        // was change interactively
    }
    else
    {
        // simple click without much movement, try selection
        TrySelection(rMEvt.GetPosPixel());
    }

    return true;
}

void Svx3DLightControl::Resize()
{
    // set size of page
    const Size aSize(GetDrawingArea()->get_ref_device().PixelToLogic(GetOutputSizePixel()));
    mxFmPage->SetSize(aSize);

    // set position and size of scene
    mpScene->SetSnapRect(tools::Rectangle(Point(0, 0), aSize));
}

void Svx3DLightControl::SetObjectType(SvxPreviewObjectType nType)
{
    // call parent
    Svx3DPreviewControl::SetObjectType(nType);

    // apply object rotation
    if(mp3DObj)
    {
        basegfx::B3DHomMatrix aObjectRotation;
        aObjectRotation.rotate(mfRotateX, mfRotateY, mfRotateZ);
        mp3DObj->SetTransform(aObjectRotation);
    }
}

bool Svx3DLightControl::IsSelectionValid()
{
    return (NO_LIGHT_SELECTED != maSelectedLight) && GetLightOnOff(maSelectedLight);
}

void Svx3DLightControl::GetPosition(double& rHor, double& rVer)
{
    if(IsSelectionValid())
    {
        basegfx::B3DVector aDirection(GetLightDirection(maSelectedLight));
        aDirection.normalize();
        rHor = basegfx::rad2deg(atan2(-aDirection.getX(), -aDirection.getZ()) + M_PI); // 0..360.0
        rVer = basegfx::rad2deg(atan2(aDirection.getY(), aDirection.getXZLength())); // -90.0..90.0
    }
    if(IsGeometrySelected())
    {
        rHor = basegfx::rad2deg(mfRotateY); // 0..360.0
        rVer = basegfx::rad2deg(mfRotateX); // -90.0..90.0
    }
}

void Svx3DLightControl::SetPosition(double fHor, double fVer)
{
    if(IsSelectionValid())
    {
        // set selected light's direction
        fHor = basegfx::deg2rad(fHor) - M_PI; // -PI..PI
        fVer = basegfx::deg2rad(fVer); // -PI2..PI2
        basegfx::B3DVector aDirection(cos(fVer) * -sin(fHor), sin(fVer), cos(fVer) * -cos(fHor));
        aDirection.normalize();

        if(!aDirection.equal(GetLightDirection(maSelectedLight)))
        {
            // set changed light direction at SdrScene
            SfxItemSet aSet(mpModel->GetItemPool());

            switch(maSelectedLight)
            {
                case 0: aSet.Put(makeSvx3DLightDirection1Item(aDirection)); break;
                case 1: aSet.Put(makeSvx3DLightDirection2Item(aDirection)); break;
                case 2: aSet.Put(makeSvx3DLightDirection3Item(aDirection)); break;
                case 3: aSet.Put(makeSvx3DLightDirection4Item(aDirection)); break;
                case 4: aSet.Put(makeSvx3DLightDirection5Item(aDirection)); break;
                case 5: aSet.Put(makeSvx3DLightDirection6Item(aDirection)); break;
                case 6: aSet.Put(makeSvx3DLightDirection7Item(aDirection)); break;
                default:
                case 7: aSet.Put(makeSvx3DLightDirection8Item(aDirection)); break;
            }

            mpScene->SetMergedItemSet(aSet);

            // correct 3D light's and LampFrame's geometries
            AdaptToSelectedLight();
            Invalidate();
        }
    }
    if(!IsGeometrySelected())
        return;

    if(mfRotateX == fVer && mfRotateY == fHor)
        return;

    mfRotateX = basegfx::deg2rad(fVer);
    mfRotateY = basegfx::deg2rad(fHor);

    if(mp3DObj)
    {
        basegfx::B3DHomMatrix aObjectRotation;
        aObjectRotation.rotate(mfRotateX, mfRotateY, mfRotateZ);
        mp3DObj->SetTransform(aObjectRotation);

        Invalidate();
    }
}

void Svx3DLightControl::SetRotation(double fRotX, double fRotY, double fRotZ)
{
    if(!IsGeometrySelected())
        return;

    if(fRotX == mfRotateX && fRotY == mfRotateY && fRotZ == mfRotateZ)
        return;

    mfRotateX = fRotX;
    mfRotateY = fRotY;
    mfRotateZ = fRotZ;

    if(mp3DObj)
    {
        basegfx::B3DHomMatrix aObjectRotation;
        aObjectRotation.rotate(mfRotateX, mfRotateY, mfRotateZ);
        mp3DObj->SetTransform(aObjectRotation);

        Invalidate();
    }
}

void Svx3DLightControl::GetRotation(double& rRotX, double& rRotY, double& rRotZ)
{
    rRotX = mfRotateX;
    rRotY = mfRotateY;
    rRotZ = mfRotateZ;
}

void Svx3DLightControl::Set3DAttributes( const SfxItemSet& rAttr )
{
    // call parent
    Svx3DPreviewControl::Set3DAttributes(rAttr);

    if(maSelectedLight != NO_LIGHT_SELECTED && !GetLightOnOff(maSelectedLight))
    {
        // selected light is no more active, select new one
        maSelectedLight = NO_LIGHT_SELECTED;
    }

    // local updates
    ConstructLightObjects();
    AdaptToSelectedLight();
    Invalidate();
}

void Svx3DLightControl::SelectLight(sal_uInt32 nLightNumber)
{
    if(nLightNumber > 7)
    {
        nLightNumber = NO_LIGHT_SELECTED;
    }

    if(NO_LIGHT_SELECTED != nLightNumber)
    {
        if(!GetLightOnOff(nLightNumber))
        {
            nLightNumber = NO_LIGHT_SELECTED;
        }
    }

    if(nLightNumber != maSelectedLight)
    {
        maSelectedLight = nLightNumber;
        mbGeometrySelected = false;
        ConstructLightObjects();
        AdaptToSelectedLight();
        Invalidate();
    }
}

bool Svx3DLightControl::GetLightOnOff(sal_uInt32 nNum) const
{
    if(nNum <= 7)
    {
        const SfxItemSet aLightItemSet(Get3DAttributes());

        switch(nNum)
        {
            case 0 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTON_1).GetValue();
            case 1 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTON_2).GetValue();
            case 2 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTON_3).GetValue();
            case 3 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTON_4).GetValue();
            case 4 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTON_5).GetValue();
            case 5 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTON_6).GetValue();
            case 6 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTON_7).GetValue();
            case 7 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTON_8).GetValue();
        }
    }

    return false;
}

Color Svx3DLightControl::GetLightColor(sal_uInt32 nNum) const
{
    if(nNum <= 7)
    {
        const SfxItemSet aLightItemSet(Get3DAttributes());

        switch(nNum)
        {
            case 0 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTCOLOR_1).GetValue();
            case 1 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTCOLOR_2).GetValue();
            case 2 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTCOLOR_3).GetValue();
            case 3 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTCOLOR_4).GetValue();
            case 4 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTCOLOR_5).GetValue();
            case 5 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTCOLOR_6).GetValue();
            case 6 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTCOLOR_7).GetValue();
            case 7 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTCOLOR_8).GetValue();
        }
    }

    return COL_BLACK;
}

basegfx::B3DVector Svx3DLightControl::GetLightDirection(sal_uInt32 nNum) const
{
    if(nNum <= 7)
    {
        const SfxItemSet aLightItemSet(Get3DAttributes());

        switch(nNum)
        {
            case 0 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTDIRECTION_1).GetValue();
            case 1 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTDIRECTION_2).GetValue();
            case 2 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTDIRECTION_3).GetValue();
            case 3 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTDIRECTION_4).GetValue();
            case 4 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTDIRECTION_5).GetValue();
            case 5 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTDIRECTION_6).GetValue();
            case 6 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTDIRECTION_7).GetValue();
            case 7 : return aLightItemSet.Get(SDRATTR_3DSCENE_LIGHTDIRECTION_8).GetValue();
        }
    }

    return basegfx::B3DVector();
}

SvxLightCtl3D::SvxLightCtl3D(Svx3DLightControl& rLightControl, weld::Scale& rHori,
                       weld::Scale& rVert, weld::Button& rSwitcher)
    : mrLightControl(rLightControl)
    , mrHorScroller(rHori)
    , mrVerScroller(rVert)
    , mrSwitcher(rSwitcher)
{
    // init members
    Init();
}

void SvxLightCtl3D::Init()
{
    Size aSize(mrLightControl.GetDrawingArea()->get_ref_device().LogicToPixel(Size(80, 100), MapMode(MapUnit::MapAppFont)));
    mrLightControl.set_size_request(aSize.Width(), aSize.Height());

    // #i58240# set HelpIDs for scrollbars and switcher
    mrHorScroller.set_help_id(HID_CTRL3D_HSCROLL);
    mrVerScroller.set_help_id(HID_CTRL3D_VSCROLL);
    mrSwitcher.set_help_id(HID_CTRL3D_SWITCHER);
    mrSwitcher.set_accessible_name(SvxResId(STR_SWITCH));

    // Light preview
    mrLightControl.Show();
    mrLightControl.SetChangeCallback( LINK(this, SvxLightCtl3D, InternalInteractiveChange) );
    mrLightControl.SetSelectionChangeCallback( LINK(this, SvxLightCtl3D, InternalSelectionChange) );

    // Horiz Scrollbar
    mrHorScroller.show();
    mrHorScroller.set_range(0, 36000);
    mrHorScroller.connect_value_changed( LINK(this, SvxLightCtl3D, ScrollBarMove) );

    // Vert Scrollbar
    mrVerScroller.show();
    mrVerScroller.set_range(0, 18000);
    mrVerScroller.connect_value_changed( LINK(this, SvxLightCtl3D, ScrollBarMove) );

    // Switch Button
    mrSwitcher.show();
    mrSwitcher.connect_clicked( LINK(this, SvxLightCtl3D, ButtonPress) );

    weld::DrawingArea* pArea = mrLightControl.GetDrawingArea();
    pArea->connect_key_press(Link<const KeyEvent&, bool>()); //acknowledge we first remove the old one
    pArea->connect_key_press(LINK(this, SvxLightCtl3D, KeyInput));

    pArea->connect_focus_in(Link<weld::Widget&, void>()); //acknowledge we first remove the old one
    pArea->connect_focus_in(LINK(this, SvxLightCtl3D, FocusIn));

    // check selection
    CheckSelection();
}

void SvxLightCtl3D::CheckSelection()
{
    const bool bSelectionValid(mrLightControl.IsSelectionValid() || mrLightControl.IsGeometrySelected());
    mrHorScroller.set_sensitive(bSelectionValid);
    mrVerScroller.set_sensitive(bSelectionValid);

    if (bSelectionValid)
    {
        double fHor(0.0), fVer(0.0);
        mrLightControl.GetPosition(fHor, fVer);
        mrHorScroller.set_value( sal_Int32(fHor * 100.0) );
        mrVerScroller.set_value( 18000 - sal_Int32((fVer + 90.0) * 100.0) );
    }
}

void SvxLightCtl3D::move( double fDeltaHor, double fDeltaVer )
{
    double fHor(0.0), fVer(0.0);

    mrLightControl.GetPosition(fHor, fVer);
    fHor += fDeltaHor;
    fVer += fDeltaVer;

    if( fVer > 90.0 )
        return;

    if ( fVer < -90.0 )
        return;

    mrLightControl.SetPosition(fHor, fVer);
    mrHorScroller.set_value( sal_Int32(fHor * 100.0) );
    mrVerScroller.set_value( 18000 - sal_Int32((fVer + 90.0) * 100.0) );

    if(maUserInteractiveChangeCallback.IsSet())
    {
        maUserInteractiveChangeCallback.Call(this);
    }
}

IMPL_LINK(SvxLightCtl3D, KeyInput, const KeyEvent&, rKEvt, bool)
{
    const vcl::KeyCode aCode(rKEvt.GetKeyCode());

    if (aCode.GetModifier())
        return false;

    bool bHandled = true;

    switch ( aCode.GetCode() )
    {
        case KEY_SPACE:
        {
            break;
        }
        case KEY_LEFT:
        {
            move(  -4.0,  0.0 ); // #i58242# changed move direction in X
            break;
        }
        case KEY_RIGHT:
        {
            move( 4.0,  0.0 ); // #i58242# changed move direction in X
            break;
        }
        case KEY_UP:
        {
            move(  0.0,  4.0 );
            break;
        }
        case KEY_DOWN:
        {
            move(  0.0, -4.0 );
            break;
        }
        case KEY_PAGEUP:
        {
            sal_Int32 nLight(mrLightControl.GetSelectedLight() - 1);

            while((nLight >= 0) && !mrLightControl.GetLightOnOff(nLight))
            {
                nLight--;
            }

            if(nLight < 0)
            {
                nLight = 7;

                while((nLight >= 0) && !mrLightControl.GetLightOnOff(nLight))
                {
                    nLight--;
                }
            }

            if(nLight >= 0)
            {
                mrLightControl.SelectLight(nLight);
                CheckSelection();

                if(maUserSelectionChangeCallback.IsSet())
                {
                    maUserSelectionChangeCallback.Call(this);
                }
            }

            break;
        }
        case KEY_PAGEDOWN:
        {
            sal_Int32 nLight(mrLightControl.GetSelectedLight() - 1);

            while(nLight <= 7 && !mrLightControl.GetLightOnOff(nLight))
            {
                nLight++;
            }

            if(nLight > 7)
            {
                nLight = 0;

                while(nLight <= 7 && !mrLightControl.GetLightOnOff(nLight))
                {
                    nLight++;
                }
            }

            if(nLight <= 7)
            {
                mrLightControl.SelectLight(nLight);
                CheckSelection();

                if(maUserSelectionChangeCallback.IsSet())
                {
                    maUserSelectionChangeCallback.Call(this);
                }
            }

            break;
        }
        default:
        {
            bHandled = false;
            break;
        }
    }
    return bHandled;
}

IMPL_LINK_NOARG(SvxLightCtl3D, FocusIn, weld::Widget&, void)
{
    if (mrLightControl.IsEnabled())
    {
        CheckSelection();
    }
}

IMPL_LINK_NOARG(SvxLightCtl3D, ScrollBarMove, weld::Scale&, void)
{
    const sal_Int32 nHor(mrHorScroller.get_value());
    const sal_Int32 nVer(mrVerScroller.get_value());

    mrLightControl.SetPosition(
        static_cast<double>(nHor) / 100.0,
        static_cast<double>((18000 - nVer) - 9000) / 100.0);

    if (maUserInteractiveChangeCallback.IsSet())
    {
        maUserInteractiveChangeCallback.Call(this);
    }
}

IMPL_LINK_NOARG(SvxLightCtl3D, ButtonPress, weld::Button&, void)
{
    if(SvxPreviewObjectType::SPHERE == GetSvx3DLightControl().GetObjectType())
    {
        GetSvx3DLightControl().SetObjectType(SvxPreviewObjectType::CUBE);
    }
    else
    {
        GetSvx3DLightControl().SetObjectType(SvxPreviewObjectType::SPHERE);
    }
}

IMPL_LINK_NOARG(SvxLightCtl3D, InternalInteractiveChange, Svx3DLightControl*, void)
{
    double fHor(0.0), fVer(0.0);

    mrLightControl.GetPosition(fHor, fVer);
    mrHorScroller.set_value( sal_Int32(fHor * 100.0) );
    mrVerScroller.set_value( 18000 - sal_Int32((fVer + 90.0) * 100.0) );

    if(maUserInteractiveChangeCallback.IsSet())
    {
        maUserInteractiveChangeCallback.Call(this);
    }
}

IMPL_LINK_NOARG(SvxLightCtl3D, InternalSelectionChange, Svx3DLightControl*, void)
{
    CheckSelection();

    if(maUserSelectionChangeCallback.IsSet())
    {
        maUserSelectionChangeCallback.Call(this);
    }
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
