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/* -*- 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 <XPropertyTable.hxx>
#include <vcl/svapp.hxx>

#include <vcl/virdev.hxx>
#include <vcl/settings.hxx>
#include <svx/strings.hrc>
#include <svx/dialmgr.hxx>

#include <drawinglayer/attribute/fillhatchattribute.hxx>
#include <drawinglayer/primitive2d/PolyPolygonHatchPrimitive2D.hxx>
#include <drawinglayer/primitive2d/PolygonHairlinePrimitive2D.hxx>
#include <drawinglayer/processor2d/baseprocessor2d.hxx>
#include <drawinglayer/processor2d/processor2dtools.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <osl/diagnose.h>
#include <rtl/ustrbuf.hxx>
#include <memory>

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

XHatchList::XHatchList(const OUString& rPath, const OUString& rReferer)
  : XPropertyList( XPropertyListType::Hatch, rPath, rReferer )
{
}

XHatchList::~XHatchList()
{
}

void XHatchList::Replace(std::unique_ptr<XHatchEntry> pEntry, tools::Long nIndex)
{
    XPropertyList::Replace(std::move(pEntry), nIndex);
}

XHatchEntry* XHatchList::GetHatch(tools::Long nIndex) const
{
    return static_cast<XHatchEntry*>( XPropertyList::Get(nIndex) );
}

uno::Reference< container::XNameContainer > XHatchList::createInstance()
{
    return SvxUnoXHatchTable_createInstance( *this );
}

bool XHatchList::Create()
{
    OUStringBuffer aStr(SvxResId(RID_SVXSTR_HATCH) + " 1");

    sal_Int32 nLen = aStr.getLength() - 1;
    Insert(std::make_unique<XHatchEntry>(XHatch(COL_BLACK,css::drawing::HatchStyle_SINGLE,100,  0_deg10),aStr.toString()));
    aStr[nLen] = '2';
    Insert(std::make_unique<XHatchEntry>(XHatch(COL_RED  ,css::drawing::HatchStyle_DOUBLE, 80,450_deg10),aStr.toString()));
    aStr[nLen] = '3';
    Insert(std::make_unique<XHatchEntry>(XHatch(COL_BLUE ,css::drawing::HatchStyle_TRIPLE,120,  0_deg10),aStr.toString()));

    return true;
}

BitmapEx XHatchList::CreateBitmap( tools::Long nIndex, const Size& rSize) const
{
    BitmapEx aRetval;
    OSL_ENSURE(nIndex < Count(), "OOps, access out of range (!)");

    if(nIndex < Count())
    {
        const StyleSettings& rStyleSettings = Application::GetSettings().GetStyleSettings();

        // prepare polygon geometry for rectangle
        basegfx::B2DPolygon aRectangle(
            basegfx::utils::createPolygonFromRect(
                basegfx::B2DRange(0.0, 0.0, rSize.Width(), rSize.Height())));

        const XHatch& rHatch = GetHatch(nIndex)->GetHatch();
        drawinglayer::attribute::HatchStyle aHatchStyle(drawinglayer::attribute::HatchStyle::Triple);

        switch(rHatch.GetHatchStyle())
        {
            case css::drawing::HatchStyle_SINGLE :
            {
                aHatchStyle = drawinglayer::attribute::HatchStyle::Single;
                break;
            }
            case css::drawing::HatchStyle_DOUBLE :
            {
                aHatchStyle = drawinglayer::attribute::HatchStyle::Double;
                break;
            }
            default :
            {
                aHatchStyle = drawinglayer::attribute::HatchStyle::Triple; // css::drawing::HatchStyle_TRIPLE
                break;
            }
        }

        const basegfx::B2DHomMatrix aScaleMatrix(OutputDevice::LogicToLogic(MapMode(MapUnit::Map100thMM), MapMode(MapUnit::MapPixel)));
        const basegfx::B2DVector aScaleVector(aScaleMatrix * basegfx::B2DVector(1.0, 0.0));
        const double fScaleValue(aScaleVector.getLength());

        drawinglayer::attribute::FillHatchAttribute aFillHatch(
            aHatchStyle,
            static_cast<double>(rHatch.GetDistance()) * fScaleValue,
            toRadians(rHatch.GetAngle()),
            rHatch.GetColor().getBColor(),
            3, // same default as VCL, a minimum of three discrete units (pixels) offset
            false);

        const basegfx::BColor aBlack(0.0, 0.0, 0.0);
        const drawinglayer::primitive2d::Primitive2DReference aHatchPrimitive(
            new drawinglayer::primitive2d::PolyPolygonHatchPrimitive2D(
                basegfx::B2DPolyPolygon(aRectangle),
                aBlack,
                std::move(aFillHatch)));

        const drawinglayer::primitive2d::Primitive2DReference aBlackRectanglePrimitive(
            new drawinglayer::primitive2d::PolygonHairlinePrimitive2D(
                std::move(aRectangle),
                aBlack));

        // prepare VirtualDevice
        ScopedVclPtrInstance< VirtualDevice > pVirtualDevice;
        const drawinglayer::geometry::ViewInformation2D aNewViewInformation2D;

        pVirtualDevice->SetOutputSizePixel(rSize);
        pVirtualDevice->SetDrawMode(rStyleSettings.GetHighContrastMode()
            ? DrawModeFlags::SettingsLine | DrawModeFlags::SettingsFill | DrawModeFlags::SettingsText | DrawModeFlags::SettingsGradient
            : DrawModeFlags::Default);

        if(rStyleSettings.GetPreviewUsesCheckeredBackground())
        {
            const Point aNull(0, 0);
            static const sal_uInt32 nLen(8);
            static const Color aW(COL_WHITE);
            static const Color aG(0xef, 0xef, 0xef);
            pVirtualDevice->DrawCheckered(aNull, rSize, nLen, aW, aG);
        }
        else
        {
            pVirtualDevice->SetBackground(rStyleSettings.GetFieldColor());
            pVirtualDevice->Erase();
        }

        // create processor and draw primitives
        std::unique_ptr<drawinglayer::processor2d::BaseProcessor2D> pProcessor2D(drawinglayer::processor2d::createPixelProcessor2DFromOutputDevice(
            *pVirtualDevice,
            aNewViewInformation2D));

        drawinglayer::primitive2d::Primitive2DContainer aSequence {
            aHatchPrimitive, aBlackRectanglePrimitive };
        pProcessor2D->process(aSequence);
        pProcessor2D.reset();

        // get result bitmap and scale
        aRetval = pVirtualDevice->GetBitmapEx(Point(0, 0), pVirtualDevice->GetOutputSizePixel());
    }

    return aRetval;
}

BitmapEx XHatchList::CreateBitmapForUI(tools::Long nIndex)
{
    const StyleSettings& rStyleSettings = Application::GetSettings().GetStyleSettings();
    const Size& rSize = rStyleSettings.GetListBoxPreviewDefaultPixelSize();
    BitmapEx aRetVal = CreateBitmap(nIndex, rSize);
    return aRetVal;
}

BitmapEx XHatchList::GetBitmapForPreview(tools::Long nIndex, const Size& rSize)
{
    return CreateBitmap(nIndex, rSize);
}

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