/* -*- 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 <com/sun/star/rendering/PathCapType.hpp>
#include <com/sun/star/rendering/PathJoinType.hpp>
#include <com/sun/star/rendering/TexturingMode.hpp>
#include <com/sun/star/rendering/XCanvas.hpp>
#include <basegfx/utils/canvastools.hxx>
#include <basegfx/utils/gradienttools.hxx>
#include <basegfx/utils/tools.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/vector/b2dsize.hxx>
#include <basegfx/range/b2drange.hxx>
#include <basegfx/range/b2drectangle.hxx>
#include <basegfx/polygon/b2dlinegeometry.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <sal/log.hxx>
#include <vcl/canvastools.hxx>
#include <implrenderer.hxx>

#include "emfpcustomlinecap.hxx"
#include "emfppath.hxx"
#include "emfppen.hxx"

using namespace ::com::sun::star;
using namespace ::basegfx;

namespace cppcanvas
{
    namespace internal
    {
        const sal_uInt32 EmfPlusCustomLineCapDataTypeDefault = 0x00000000;
        const sal_uInt32 EmfPlusCustomLineCapDataTypeAdjustableArrow = 0x00000001;

        const sal_uInt32 EmfPlusCustomLineCapDataFillPath = 0x00000001;
        const sal_uInt32 EmfPlusCustomLineCapDataLinePath = 0x00000002;

        EMFPCustomLineCap::EMFPCustomLineCap()
            : EMFPObject()
            , type(0)
            , strokeStartCap(0)
            , strokeEndCap(0)
            , strokeJoin(0)
            , miterLimit(0.0)
            , mbIsFilled(false)
        {
        }

        void EMFPCustomLineCap::SetAttributes(rendering::StrokeAttributes& aAttributes)
        {
            aAttributes.StartCapType = EMFPPen::lcl_convertStrokeCap(strokeStartCap);
            aAttributes.EndCapType = EMFPPen::lcl_convertStrokeCap(strokeEndCap);
            aAttributes.JoinType = EMFPPen::lcl_convertLineJoinType(strokeJoin);

            aAttributes.MiterLimit = miterLimit;
        }

        void EMFPCustomLineCap::ReadPath(SvStream& s, ImplRenderer const & rR, bool bFill)
        {
            sal_Int32 pathLength;
            s.ReadInt32(pathLength);
            SAL_INFO("cppcanvas.emf", "EMF+\t\tpath length: " << pathLength);

            sal_uInt32 pathHeader;
            sal_Int32 pathPoints, pathFlags;
            s.ReadUInt32(pathHeader).ReadInt32(pathPoints).ReadInt32(pathFlags);

            SAL_INFO("cppcanvas.emf", "EMF+\t\tpath (custom cap line path)");
            SAL_INFO("cppcanvas.emf", "EMF+\t\theader: 0x" << std::hex << pathHeader << " points: " << std::dec << pathPoints << " additional flags: 0x" << std::hex << pathFlags << std::dec);

            EMFPPath path(pathPoints);
            path.Read(s, pathFlags, rR);

            polygon = path.GetPolygon(rR, false);
            mbIsFilled = bFill;

            // transformation to convert the path to what LibreOffice
            // expects
            B2DHomMatrix aMatrix;
            aMatrix.scale(1.0, -1.0);

            polygon.transform(aMatrix);
        };

        void EMFPCustomLineCap::Read(SvStream& s, ImplRenderer const & rR)
        {
            sal_uInt32 header;

            s.ReadUInt32(header).ReadUInt32(type);

            SAL_INFO("cppcanvas.emf", "EMF+\t\tcustom cap");
            SAL_INFO("cppcanvas.emf", "EMF+\t\theader: 0x" << std::hex << header << " type: " << type << std::dec);

            if (type == EmfPlusCustomLineCapDataTypeDefault)
            {
                sal_uInt32 customLineCapDataFlags, baseCap;
                float baseInset;
                float widthScale;
                float fillHotSpotX, fillHotSpotY, strokeHotSpotX, strokeHotSpotY;

                s.ReadUInt32(customLineCapDataFlags).ReadUInt32(baseCap).ReadFloat(baseInset)
                    .ReadUInt32(strokeStartCap).ReadUInt32(strokeEndCap).ReadUInt32(strokeJoin)
                    .ReadFloat(miterLimit).ReadFloat(widthScale)
                    .ReadFloat(fillHotSpotX).ReadFloat(fillHotSpotY).ReadFloat(strokeHotSpotX).ReadFloat(strokeHotSpotY);

                SAL_INFO("cppcanvas.emf", "EMF+\t\tcustomLineCapDataFlags: 0x" << std::hex << customLineCapDataFlags);
                SAL_INFO("cppcanvas.emf", "EMF+\t\tbaseCap: 0x" << std::hex << baseCap);
                SAL_INFO("cppcanvas.emf", "EMF+\t\tbaseInset: " << baseInset);
                SAL_INFO("cppcanvas.emf", "EMF+\t\tstrokeStartCap: 0x" << std::hex << strokeStartCap);
                SAL_INFO("cppcanvas.emf", "EMF+\t\tstrokeEndCap: 0x" << std::hex << strokeEndCap);
                SAL_INFO("cppcanvas.emf", "EMF+\t\tstrokeJoin: 0x" << std::hex << strokeJoin);
                SAL_INFO("cppcanvas.emf", "EMF+\t\tmiterLimit: " << miterLimit);
                SAL_INFO("cppcanvas.emf", "EMF+\t\twidthScale: " << widthScale);

                if (customLineCapDataFlags & EmfPlusCustomLineCapDataFillPath)
                {
                    ReadPath(s, rR, true);
                }

                if (customLineCapDataFlags & EmfPlusCustomLineCapDataLinePath)
                {
                    ReadPath(s, rR, false);
                }
            }
            else if (type == EmfPlusCustomLineCapDataTypeAdjustableArrow)
            {
                // TODO only reads the data, does not use them [I've had
                // no test document to be able to implement it]

                sal_Int32 width, height, middleInset, fillState, lineStartCap;
                sal_Int32 lineEndCap, lineJoin, widthScale;
                float fillHotSpotX, fillHotSpotY, lineHotSpotX, lineHotSpotY;

                s.ReadInt32(width).ReadInt32(height).ReadInt32(middleInset).ReadInt32(fillState).ReadInt32(lineStartCap)
                    .ReadInt32(lineEndCap).ReadInt32(lineJoin).ReadFloat(miterLimit).ReadInt32(widthScale)
                    .ReadFloat(fillHotSpotX).ReadFloat(fillHotSpotY).ReadFloat(lineHotSpotX).ReadFloat(lineHotSpotY);

                SAL_INFO("cppcanvas.emf", "EMF+\t\tTODO - actually read EmfPlusCustomLineCapArrowData object (section 2.2.2.12)");
            }
        }
    }
}

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