core/DesktopEditor/graphics/GraphicsPath.h

/*
 * (c) Copyright Ascensio System SIA 2010-2017
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation. In accordance with
 * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
 * that Ascensio System SIA expressly excludes the warranty of non-infringement
 * of any third-party rights.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For
 * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
 * EU, LV-1021.
 *
 * The  interactive user interfaces in modified source and object code versions
 * of the Program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU AGPL version 3.
 *
 * Pursuant to Section 7(b) of the License you must retain the original Product
 * logo when distributing the program. Pursuant to Section 7(e) we decline to
 * grant you any rights under trademark law for use of our trademarks.
 *
 * All the Product's GUI elements, including illustrations and icon sets, as
 * well as technical writing content are licensed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International. See the License
 * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 */
#ifndef _BUILD_GRAPHICSPATH_H_
#define _BUILD_GRAPHICSPATH_H_

#include "AggPlusEnums.h"
#include "../agg-2.4/include/agg_basics.h"
#include "../agg-2.4/include/agg_path_storage.h"

#include "../agg-2.4/include/agg_rasterizer_scanline_aa.h"
#include "../agg-2.4/include/agg_conv_transform.h"
#include "../agg-2.4/include/agg_conv_stroke.h"
#include "../agg-2.4/include/agg_conv_contour.h"
#include "../agg-2.4/include/agg_conv_unclose_polygon.h"

#include "../agg-2.4/include/agg_bezier_arc.h"
#include "../agg-2.4/include/agg_conv_curve.h"
#include "../agg-2.4/include/agg_renderer_base.h"
#include "../agg-2.4/include/agg_renderer_scanline.h"

#include "IRenderer.h"

#include "Matrix.h"

#include "structures.h"
#include "../fontengine/FontManager.h"

namespace Aggplus
{
class CGraphicsPath : public ISimpleGraphicsPath
{
	friend class CClip;
	friend class CFontManager;
	friend class CGraphics;

public:
	CGraphicsPath();
	~CGraphicsPath();

	CGraphicsPath* Clone();

	Status Reset();
	void SetRuler(bool bEvenOdd);

	Status StartFigure();
	Status CloseFigure();
	bool Is_poly_closed();
	Status MoveTo(double x, double y);
	Status LineTo(double x, double y);
	Status CurveTo(double x1, double y1, double x2, double y2, double x3, double y3);

	Status AddLine(double x1, double y1, double x2, double y2);
	Status AddLines(double* pPoints, int nCount);

	// методы, которые просто будем сводить к трем основным
	Status AddBezier(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4);
	Status AddBeziers(double* pPoints, int nCount);
	Status AddCurve(double* pPoints, int nCount);
	Status AddEllipse(double x, double y, double width, double height);
	Status AddRectangle(double x, double y, double width, double height);
	Status AddPolygon(double* pPoints, int nCount);
	Status AddPath(const CGraphicsPath& oPath);
	Status AddArc(double x, double y, double width, double height, double startAngle, double sweepAngle);
	ULONG GetPointCount() const;
	Status GetPathPoints(PointF* points, int count) const;
	Status GetLastPoint(double& x, double& y);
	Status GetPathPoints(double* points, int count) const;
	void GetBounds(double& left, double& top, double& width, double& height);
	Status Transform(const CMatrix* matrix);
	virtual bool _MoveTo(double x, double y);
	virtual bool _LineTo(double x, double y);
	virtual bool _CurveTo(double x1, double y1, double x2, double y2, double x3, double y3);
	virtual bool _Close();
	Status AddString(const std::wstring& strText, CFontManager* pFont, double x, double y);
    Status AddString(const unsigned int* pGids, const unsigned int nGidsCount, CFontManager* pFont, double x, double y);
	Status AddStringC(const LONG& lText, CFontManager* pFont, double x, double y);
	void z_Stroke(const NSStructures::CPen* Pen);
	void Widen(const NSStructures::CPen* Pen, const CMatrix* matrix, float flatness);
	
	agg::path_storage *z_get_agg_path_storage();

public:
	agg::path_storage m_agg_ps;
	bool m_bEvenOdd;
	bool m_bIsMoveTo;

	CMatrix* m_pTransform;

public:

	int EllipseArc(double fX, double fY, double fXRad, double fYRad, double fAngle1, double fAngle2, INT bClockDirection);
	double AngToEllPrm(double fAngle, double fXRad, double fYRad);
	int EllipseArc2(double fX, double fY, double fXRad, double fYRad, double fAngle1, double fAngle2, INT bClockDirection);
	int EllipseArc3(double fX, double fY, double fXRad, double fYRad, double dAngle1, double dAngle2, double *pfXCur, double *pfYCur, INT bClockDirection = FALSE);
	int Ellipse(double fX, double fY, double fXRad, double fYRad);
	Status AddArc2(double fX, double fY, double fWidth, double fHeight, double fStartAngle, double fSweepAngle);
};

class CGraphicsPathSimpleConverter : public ISimpleGraphicsPath
{
	friend class CFontManager;
	
private:
	IRenderer* m_pRenderer;

	bool m_bEvenOdd;
	bool m_bIsMoveTo;
	bool m_bIsClosed;

	agg::path_storage m_agg_ps;

public:
	CGraphicsPathSimpleConverter();
	~CGraphicsPathSimpleConverter();

public:
	void SetRenderer(IRenderer* pRenderer);
	IRenderer* GetRenderer(INT bIsAddref = FALSE);

public:
	bool PathCommandMoveTo(double fX, double fY);
	bool PathCommandLineTo(double fX, double fY);
	bool PathCommandLinesTo(double* pPoints, LONG lCount);
	bool PathCommandCurveTo(double fX1, double fY1, double fX2, double fY2, double fX3, double fY3);
	bool PathCommandCurvesTo(double* pData, LONG lCount);
	bool PathCommandArcTo(double fX, double fY, double fWidth, double fHeight, double fStartAngle, double fSweepAngle);
	bool PathCommandClose();
	bool PathCommandEnd();
	bool PathCommandStart();
	bool PathCommandGetCurrentPoint(double* fX, double* fY);
	bool PathCommandText(const std::wstring& bsText, CFontManager* pManager, double fX, double fY, double fWidth, double fHeight, double fBaseLineOffset);
	bool PathCommandTextEx(std::wstring& bsText, std::wstring& bsGidText, CFontManager* pManager, double fX, double fY, double fWidth, double fHeight, double fBaseLineOffset, DWORD lFlags);

    bool PathCommandText2(const int* pUnicodes, const int* pGids, const int& nCount, CFontManager* pManager,
                          const double& x, const double& y, const double& w, const double& h);
    bool PathCommandText2(const std::wstring& sUnicodes, const int* pGids, const int& nCount, CFontManager* pManager,
                          const double& x, const double& y, const double& w, const double& h);

	bool PathCommandGetBounds(double& left, double& top, double& width, double &height);
	
public:

	virtual bool _MoveTo(double x, double y);
	virtual bool _LineTo(double x, double y);
	virtual bool _CurveTo(double x1, double y1, double x2, double y2, double x3, double y3);
	virtual bool _Close();
	bool _Reset();
	bool _Start();

protected:
	bool AddString(const std::wstring& bstrText, CFontManager* pFont, double x, double y);

	int EllipseArc(double fX, double fY, double fXRad, double fYRad, double fAngle1, double fAngle2, INT bClockDirection);
	double AngToEllPrm(double fAngle, double fXRad, double fYRad);
	int EllipseArc2(double fX, double fY, double fXRad, double fYRad, double fAngle1, double fAngle2, INT bClockDirection);
	int EllipseArc3(double fX, double fY, double fXRad, double fYRad, double dAngle1, double dAngle2, double *pfXCur, double *pfYCur, INT bClockDirection = FALSE);
	int Ellipse(double fX, double fY, double fXRad, double fYRad);

	bool AddArc(double fX, double fY, double fWidth, double fHeight, double fStartAngle, double fSweepAngle);

	bool Is_poly_closed();
};
}

#endif // _BUILD_GRAPHICSPATH_H_