librecad/src/lib/engine/rs.h

/****************************************************************************
**
** This file is part of the LibreCAD project, a 2D CAD program
**
** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
**
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file gpl-2.0.txt included in the
** packaging of this file.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
**
** This copyright notice MUST APPEAR in all copies of the script!
**
**********************************************************************/

#ifndef RS_H
#define RS_H

#include <cstddef>

//#define RS_TEST

// Windoze XP can't handle the original MAX/MINDOUBLE's
#define RS_MAXDOUBLE 1.0E+10
#define RS_MINDOUBLE -1.0E+10
//tolerance
#define RS_TOLERANCE 1.0e-10
//squared tolerance
#define RS_TOLERANCE15 1.5e-15
#define RS_TOLERANCE2 1.0e-20
#define RS_TOLERANCE_ANGLE 1.0e-8

/**
 * Class namespace for various enums along with some simple
 * wrapper methods for converting the enums to the Qt
 * counterparts.
 *
 * @author Andrew Mustun
 */
namespace RS2 {

    /**
     * Flags.
     */
    enum Flags : unsigned {
        /** Flag for Undoables. */
        FlagUndone      = 1<<0,
        /** Entity Visibility. */
        FlagVisible     = 1<<1,
        /** Entity attribute (e.g. color) is defined by layer. */
        FlagByLayer     = 1<<2,
        /** Entity attribute (e.g. color) defined by block. */
        FlagByBlock     = 1<<3,
        /** Layer frozen. */
        FlagFrozen      = 1<<4,
        /** Layer frozen by default. */
        FlagDefFrozen   = 1<<5,
        /** Layer locked. */
        FlagLocked      = 1<<6,
        /** Used for invalid pens. */
        FlagInvalid     = 1<<7,
        /** Entity in current selection. */
        FlagSelected    = 1<<8,
        /** Polyline closed? */
        FlagClosed      = 1<<9,
        /** Flag for temporary entities (e.g. hatch) */
        FlagTemp        = 1<<10,
        /** Flag for processed entities (optcontour) */
        FlagProcessed   = 1<<11,
        /** Startpoint selected */
        FlagSelected1   = 1<<12,
        /** Endpoint selected */
        FlagSelected2   = 1<<13,
        /** Entity is highlighted temporarily (as a user action feedback) */
        FlagHighlighted = 1<<14,
        FlagTransparent = 1<<15,
        FlagHatchChild = 1<<16
    };

    /**
     * Variable types used by RS_VariableDict and RS_Variable.
     */
    enum VariableType {
        VariableString,
        VariableInt,
        VariableDouble,
        VariableVector,
        VariableVoid
    };

    /**
     * File types. Used by file dialogs. Note: the extension might not
     * be enough to distinguish file types.
     */
    enum FormatType {
        FormatUnknown,       /**< Unknown / unsupported format. */
        FormatDXF1,          /**< QCad 1 compatibility DXF format. */
        FormatDXFRW2018,           /**< DXF format. v2018. */
        FormatDXFRW,           /**< DXF format. v2007. */
        FormatDXFRW2004,           /**< DXF format. v2004. */
        FormatDXFRW2000,           /**< DXF format. v2000. */
        FormatDXFRW14,           /**< DXF format. v14. */
        FormatDXFRW12,           /**< DXF format. v12. */
#ifdef DWGSUPPORT
        FormatDWG,           /**< DWG format. */
#endif
        FormatLFF,           /**< LibreCAD Font File format. */
        FormatCXF,           /**< CAM Expert Font format. */
        FormatJWW,           /**< JWW Format type */
        FormatJWC            /**< JWC Format type */
    };

    /*
        Entity types returned by the rtti() method.

        NOTE: Dated 2 January, 2022, by Melwyn Francis Carlo:
              If adding newer 'EntityDim's to the EntityType enumeration, 
              then make sure that it is added between 'EntityDimAligned' and 
              'EntityDimLeader'. If you do not wish to do so, then update the 
              'RS_ActionDefault::highlightHoveredEntities' function at the 
              line starting 'if ((entity->rtti() >= EntityDimAligned) ...'.
    */
    enum EntityType : unsigned {
        EntityUnknown,      /**< Unknown */
        EntityContainer,    /**< Container */
        EntityBlock,        /**< Block (Group definition) */
        EntityFontChar,     /**< Font character */
        EntityInsert,       /**< Insert (Group instance) */
        EntityGraphic,      /**< Graphic with layers */
        EntityPoint,        /**< Point */
        EntityLine,         /**< Line */
        EntityPolyline,     /**< Polyline */
        EntityVertex,       /**< Vertex (part of a polyline) */
        EntityArc,          /**< Arc */
        EntityCircle,       /**< Circle */
        EntityEllipse,      /**< Ellipse */
        EntityHyperbola,      /**< Hyperbola */
        EntitySolid,        /**< Solid */
        EntityConstructionLine, /**< Construction line */
        EntityMText,         /**< Multi-line Text */
        EntityText,         /**< Single-line Text */
        EntityDimAligned,   /**< Aligned Dimension */
        EntityDimLinear,    /**< Linear Dimension */
        EntityDimRadial,    /**< Radial Dimension */
        EntityDimDiametric, /**< Diametric Dimension */
        EntityDimAngular,   /**< Angular Dimension */
        EntityDimArc,       /**< Arc Dimension */
        EntityDimOrdinate,
        EntityTolerance,
        EntityDimLeader,    /**< Leader Dimension */
        EntityHatch,        /**< Hatch */
        EntityImage,        /**< Image */
        EntitySpline,       /**< Spline */
        EntitySplinePoints,       /**< SplinePoints */
        EntityParabola,       /**< Parabola */
        EntityOverlayBox,    /**< OverlayBox */
        EntityPreview,    /**< Preview Container */
        EntityPattern,
        EntityOverlayLine,
        EntityRefPoint,
        EntityRefLine,
        EntityRefConstructionLine,
        EntityRefArc,
        EntityRefCircle,
        EntityRefEllipse,
        EntityDimArrowBlock
    };


    inline bool isDimensionalEntity(EntityType type)  {
        return (type >= EntityDimAligned) && (type <= EntityDimLeader);
    }

    inline bool isTextEntity(EntityType type) {
        return (type == EntityText) || (type == EntityMText);
    }


    /**
     * Action types used by action factories.
     */
    enum ActionType {
        ActionNone,        /**< Invalid action id. */

        ActionDefault,
        ActionFileNew,
        ActionFileNewTemplate,
        ActionFileOpen,
        ActionFileExport,
        ActionFileClose,
        ActionFilePrint,
        ActionFilePrintPDF,
        ActionFilePrintPreview,
        ActionFileExportMakerCam,
        ActionFileQuit,

        ActionEditKillAllActions,
        ActionEditUndo,
        ActionEditRedo,
        ActionEditCut,
        ActionEditCutNoSelect,
        ActionEditCutQuick,
        ActionEditCopy,
        ActionEditCopyQuick,
        ActionEditPaste,
        ActionEditPasteTransform,
        ActionOrderNoSelect,
        ActionOrderBottom,
        ActionOrderLower,
        ActionOrderRaise,
        ActionOrderTop,
        ActionViewStatusBar,
        ActionViewLayerList,
        ActionViewBlockList,
        ActionViewCommandLine,
        ActionViewLibrary,

        ActionViewPenToolbar,
        ActionViewOptionToolbar,
        ActionViewCadToolbar,
        ActionViewFileToolbar,
        ActionViewEditToolbar,
        ActionViewSnapToolbar,
        ActionViewGrid,
        ActionViewDraft,
        ActionZoomIn,
        ActionZoomOut,
        ActionZoomAuto,
        ActionZoomWindow,
        ActionZoomPan,
        ActionZoomRedraw,
        ActionZoomPrevious,
        ActionZoomScroll, // fixme - sand - or probably it's better to incorporate into view?
        ActionSelect,
        ActionSelectSingle,
        ActionSelectContour,
        ActionSelectWindow,
        ActionDeselectWindow,
        ActionSelectAll,
        ActionDeselectAll,
        ActionSelectIntersected,
        ActionDeselectIntersected,
        ActionSelectInvert,
        ActionSelectLayer,
        ActionSelectDouble,
        ActionGetSelect,
        ActionGetEntity,

        ActionEntityInfoSelectSingle,

        ActionDrawArc,
        ActionDrawArcChord,
        ActionDrawArcAngleLen,
        ActionDrawArc3P,
        ActionDrawArc2PAngle,
        ActionDrawArc2PRadius,
        ActionDrawArc2PLength,
        ActionDrawArc2PHeight,
        ActionDrawArcParallel,
        ActionDrawArcTangential,
        ActionDrawCircle,
        ActionDrawCircle2P,
        ActionDrawCircle2PR,
        ActionDrawCircle3P,
        ActionDrawCircleCR,
        ActionDrawCircleParallel,
        ActionDrawCircleInscribe,
        ActionDrawCircleTan2_1P,
        ActionDrawCircleTan1_2P,
        ActionDrawCircleTan2,
        ActionDrawCircleTan3,
        ActionDrawCircleByArc,

        ActionDrawEllipseArcAxis,
        ActionDrawEllipseAxis,
        ActionDrawEllipseFociPoint,
        ActionDrawEllipse4Points,
        ActionDrawEllipseCenter3Points,
        ActionDrawEllipseInscribe,
        ActionDrawEllipse1Point,
        ActionDrawEllipseArc1Point,

        ActionDrawHyperbolaFP,

        ActionDrawParabola4Points,
        ActionDrawParabolaFD,

        ActionDrawHatch,
        ActionDrawImage,
        ActionDrawLine,
        ActionDrawLineAngle,
        ActionDrawLineBisector,
        ActionDrawLineFree,
        ActionDrawLineHorVert,
        ActionDrawLineHorizontal,
        ActionDrawLineOrthogonal,
        ActionDrawLineOrthTan,
        ActionDrawLineParallel,
        ActionDrawLineParallelThrough,
        ActionDrawLinePolygonCenCor,
        ActionDrawLinePolygonCenTan,//add by txmy
        ActionDrawLinePolygonCorCor,
        ActionDrawLinePolygonSideSide,
        ActionDrawLineRectangle,
        ActionDrawLineRelAngle,
        ActionDrawLineTangent1,
        ActionDrawLineTangent2,
        ActionDrawLineVertical,
        ActionDrawLineMiddle,
        ActionDrawMText,
        ActionDrawPoint,
        ActionDrawSpline,
        ActionDrawSplinePoints, //interpolation spline
        ActionDrawSplinePointRemove,
        ActionDrawSplinePointDelTwo,
        ActionDrawSplinePointAppend,
        ActionDrawSplinePointAdd,
        ActionDrawSplineExplode,
        ActionDrawSplineFromPolyline,
        ActionDrawPolyline,
        ActionDrawText,
        ActionDrawBoundingBox,

        ActionDrawRectangle3Points,
        ActionDrawRectangle1Point,
        ActionDrawRectangle2Points,
        ActionDrawSnakeLine,
        ActionDrawSnakeLineX,
        ActionDrawSnakeLineY,
        ActionDrawCross,
        ActionDrawLineAngleRel,
        ActionDrawLineOrthogonalRel,
        ActionDrawLineFromPointToLine,
        ActionDrawSliceDivideLine,
        ActionDrawSliceDivideCircle,
        ActionDrawLinePoints,
        ActionDrawPointsMiddle,
        ActionDrawPointsLattice,
        ActionSelectPoints,
        ActionPasteToPoints,

        ActionDrawStar,

        ActionPolylineAdd,
        ActionPolylineAppend,
        ActionPolylineDel,
        ActionPolylineDelBetween,
        ActionPolylineTrim,
        ActionPolylineEquidistant,
        ActionPolylineSegment,
        ActionPolylineArcsToLines,
        ActionPolylineChangeSegmentType,

        ActionDimAligned,
        ActionDimLinear,
        ActionDimLinearVer,
        ActionDimLinearHor,
        ActionDimRadial,
        ActionDimDiametric,
        ActionDimAngular,
        ActionDimArc,
        ActionDimLeader,
        ActionDimBaseline,
        ActionDimContinue,
        ActionDimOrdinate,
        ActionDimStyleApply,
        ActionDimModify,

        ActionModifyAttributes,
        ActionModifyDelete,
        ActionModifyDeleteQuick,
        ActionModifyDeleteFree,
        ActionModifyMove,
        ActionModifyMoveAdjust,
        ActionModifyRotate,
        ActionModifyScale,
        ActionModifyMirror,
        ActionModifyMoveRotate,
        ActionModifyRevertDirection,
        ActionModifyRotate2,
        ActionModifyEntity,
        ActionModifyTrim,
        ActionModifyTrim2,
        ActionModifyTrimAmount,
        ActionModifyCut,
        ActionModifyStretch,
        ActionModifyBevel,
        ActionModifyRound,
        ActionModifyOffset,
        ActionModifyLineJoin,
        ActionModifyDuplicate,
        ActionModifyBreakDivide,
        ActionModifyLineGap,
        ActionModifyAlign,
        ActionModifyAlignOne,
        ActionModifyAlignRef,

        ActionSnapFree,
        ActionSnapGrid,
        ActionSnapEndpoint,
        ActionSnapOnEntity,
        ActionSnapCenter,
        ActionSnapMiddle,
        ActionSnapDist,
        ActionSnapMiddleManual,
        ActionSnapIntersection,
        ActionSnapIntersectionManual,

        ActionRestrictNothing,
        ActionRestrictOrthogonal,
        ActionRestrictHorizontal,
        ActionRestrictVertical,

        ActionSetRelativeZero,
        ActionLockRelativeZero,
        ActionUnlockRelativeZero,

        ActionInfoPoint,
        ActionInfoInside,
        ActionInfoDistPoint2Point,
        ActionInfoDistEntity2Point,
        ActionInfoDistPoint2Entity,
        ActionInfoAngle,
        ActionInfoTotalLength,
        ActionInfoArea,
        ActionInfoProperties,
        ActionInfoPickCoordinates,
        ActionInfoAngle3Points,

        ActionLayersDefreezeAll,
        ActionLayersFreezeAll,
        ActionLayersUnlockAll,
        ActionLayersLockAll,
        ActionLayersAdd,
        ActionLayersAddCmd,
        ActionLayersActivateCmd,
        ActionLayersRemove,
        ActionLayersEdit,
        ActionLayersToggleView,
        ActionLayersToggleLock,
        ActionLayersTogglePrint,
        ActionLayersToggleConstruction,
        ActionLayersExportSelected,
        ActionLayersExportVisible,

        ActionLayerEntityActivate,
        ActionLayerEntityToggleView,
        ActionLayerEntityHideOthers,
        ActionLayerEntityTogglePrint,
        ActionLayerEntityToggleConstruction,
        ActionLayerEntityToggleLock,

        ActionBlocksDefreezeAll,
        ActionBlocksFreezeAll,
        ActionBlocksAdd,
        ActionBlocksRemove,
        ActionBlocksAttributes,
        ActionBlocksEdit,
        ActionBlocksSave,
        ActionBlocksInsert,
        ActionBlocksToggleView,
        ActionBlocksCreate,
        ActionBlocksExplode,
        ActionBlocksImport,

        ActionModifyExplodeText,
        ActionLibraryInsert,

        ActionOptionsGeneral,
        ActionOptionsDrawing,
        ActionOptionsDrawingGrid,
        ActionOptionsDrawingUnits,

        ActionDimRegenerate,

        ActionScriptOpenIDE,
        ActionScriptRun,

        ActionPenPick,
        ActionPenPickResolved,
        ActionPenApply,
        ActionPenCopy,
        ActionPenSyncFromLayer,


        ActionUCSCreate,
        ActionUCSSetByDimOrdinate,
        ActionDimOrdByOriginSelect,
        ActionDimOrdRebase,
        ActionGTDFCFrame,

        ActionInteractivePickPoint,
        ActionInteractivePickLength,
        ActionInteractivePickAngle,
        /** Needed to loop through all actions */
        ActionLast
    };

    inline bool isInteractiveInputAction(ActionType type) {
        return type == ActionInteractivePickPoint ||
               type == ActionInteractivePickLength ||
               type == ActionInteractivePickAngle;
    }

    /**
    * Entity ending. Used for returning which end of an entity is meant.
     */
    enum Ending {
        EndingStart,    /**< Start point. */
        EndingEnd,      /**< End point. */
        EndingNone      /**< Neither. */
    };

    /**
     * Update mode for non-atomic entities that need to be updated when
     * they change. e.g. texts, inserts, ...
     */
    enum UpdateMode {
        NoUpdate,       /**< No automatic updates. */
        Update,         /**< Always update automatically when modified. */
        PreviewUpdate   /**< Update automatically but only for previews (quick update) */
    };

    /**
     * Drawing mode.
     */
    enum DrawingMode {
        ModeFull,       /**< Draw everything always detailed (default) */
        ModeAuto,       /**< Draw details when reasonable */
        ModePreview,    /**< Draw only in black/white without styles */
        ModeBW,         /**< Black/white. Can be used for printing. */
        ModeWB,         /**< White/black, used for export */
    };

    /**
     * Undoable rtti.
     */
    enum UndoableType {
        UndoableUnknown,    /**< Unknown undoable */
        UndoableEntity,     /**< Entity */
        UndoableLayer       /**< Layer */
    };

    /**
     * Units.
     */
    enum Unit {
        None = 0,               /**< No unit (unit from parent) */
        Inch = 1,               /**< Inch */
        Foot = 2,               /**< Foot: 12 Inches */
        Mile = 3,               /**< Mile: 1760 Yards = 1609 m */
        Millimeter = 4,         /**< Millimeter: 0.001m */
        Centimeter = 5,         /**< Centimeter: 0.01m */
        Meter = 6,              /**< Meter */
        Kilometer = 7,          /**< Kilometer: 1000m */
        Microinch = 8,          /**< Microinch: 0.000001 */
        Mil = 9,                /**< Mil = 0.001 Inch*/
        Yard = 10,              /**< Yard: 3 Feet */
        Angstrom = 11,          /**< Angstrom: 10^-10m  */
        Nanometer = 12,         /**< Nanometer: 10^-9m  */
        Micron = 13,            /**< Micron: 10^-6m  */
        Decimeter = 14,         /**< Decimeter: 0.1m */
        Decameter = 15,         /**< Decameter: 10m */
        Hectometer = 16,        /**< Hectometer: 100m */
        Gigameter = 17,         /**< Gigameter: 1000000m */
        Astro = 18,             /**< Astro: 149.6 x 10^9m */
        Lightyear = 19,         /**< Lightyear: 9460731798 x 10^6m */
        Parsec = 20,            /**< Parsec: 30857 x 10^12 */

        LastUnit = 21           /**< Used to iterate through units */
    };


    /**
     * Format for length values.
     */
    enum LinearFormat {
        /** Scientific (e.g. 2.5E+05) */
        Scientific,
        /** Decimal (e.g. 9.5)*/
        Decimal,
        /** Engineering (e.g. 7' 11.5")*/
        Engineering,
        /** Architectural (e.g. 7'-9 1/8")*/
        Architectural,
        /** Fractional (e.g. 7 9 1/8) */
        Fractional,
        /** Metric Architectural using DIN 406 (e.g. 1.12⁵)*/
        ArchitecturalMetric
    };

    /**
     * Angle Units.
     */
    enum AngleUnit {
        Deg,               /**< Degrees */
        Rad,               /**< Radians */
        Gra                /**< Gradians */
    };

    /**
     * Display formats for angles.
     */
    enum AngleFormat {
        /** Degrees with decimal point (e.g. 24.5�) */
        DegreesDecimal,
        /** Degrees, Minutes and Seconds (e.g. 24�30'5'') */
        DegreesMinutesSeconds,
        /** Gradians with decimal point (e.g. 390.5)*/
        Gradians,
        /** Radians with decimal point (e.g. 1.57)*/
        Radians,
        /** Surveyor's units */
        Surveyors
    };

    /**
     * Enum of levels of resolving when iterating through an entity tree.
     */
    enum ResolveLevel: unsigned short {
        /** Groups are not resolved */
        ResolveNone,
        /**
        * Resolve all but not Inserts.
        */
        ResolveAllButInserts,
        /**
         * Resolve all but not Text or MText.
         */
        ResolveAllButTexts,
        /**
         * Resolve no text or images, added as a quick fix for bug#422
         */
        ResolveAllButTextImage,
        /**
         * all Entity Containers are resolved
         * (including Texts, Polylines, ...)
         */
        ResolveAll
    };

    /**
     * Direction used for scrolling actions.
     */
    enum Direction {
        Up, Left, Right, Down
    };

	enum SubWindowMode {
		CurrentMode = -1, Maximized, Cascade, Tile, TileVertical, TileHorizontal
	};

	enum TabShape {
		AnyShape = -1, Rounded, Triangular
	};

	enum TabPosition {
		AnyPosition = -1, North, South, West, East
	};


    /**
     * Leader path type.
     */
    enum LeaderPathType {
        Straight,      /**< Straight line segments */
        Spline         /**< Splines */
    };

    /**
     * Direction for zooming actions.
     */
    enum ZoomDirection {
        In, Out
    };

    /**
     * Axis specification for zooming actions.
     */
    enum Axis : unsigned short {
        OnlyX = 0,
        OnlyY,
        Both
    };

    /**
     * Grid View type
     */
    enum IsoGridViewType {
        IsoLeft,         /**< Left type isometric view */
        IsoTop,         /**< Top type isometric view */
        IsoRight,       /**< Right type isometric view */
        Ortho
    };

    enum CrossHairType{
        GridCrosshair,
        SpiderWebCrosshair,
    };

    /**
     * Snapping modes
     */
    enum SnapMode {
        SnapFree,         /**< Free positioning */
        SnapGrid,         /**< Snap to grid points */
        SnapEndpoint,     /**< Snap to endpoints */
        SnapMiddle,       /**< Snap to middle points */
        SnapCenter,       /**< Snap to centers */
        SnapOnEntity,     /**< Snap to the next point on an entity */
        SnapDist,         /**< Snap to points with a distance to an endpoint */
        SnapIntersection, /**< Snap to intersection */
        SnapIntersectionManual  /**< Snap to intersection manually */
    };

    /**
     * Snap restrictions
     */
    enum SnapRestriction {
        RestrictNothing,        /**< No restriction to snap mode */
        RestrictHorizontal,     /**< Restrict to 0,180 degrees */
        RestrictVertical,       /**< Restrict to 90,270 degrees */
        RestrictOrthogonal      /**< Restrict to 90,180,270,0 degrees */
    };

    /**
     * Enum of line styles:
     */
    enum LineType : short{
        LineByBlock = -2,      /**< Line type defined by block not entity */
        LineByLayer = -1,     /**< Line type defined by layer not entity */
        NoPen = 0,            /**< No line at all. */
        SolidLine = 1,        /**< Normal line. */

        DotLine = 2,          /**< Dotted line. */
        DotLineTiny = 3,          /**< Dotted line tiny */
        DotLine2 = 4,         /**< Dotted line small. */
        DotLineX2 = 5,        /**< Dotted line large. */

        DashLine = 6,         /**< Dashed line. */
        DashLineTiny=7,       /**< Dashed line tiny */
        DashLine2 = 8,        /**< Dashed line small. */
        DashLineX2 = 9,       /**< Dashed line large. */

        DashDotLine = 10,      /**< Alternate dots and dashes. */
        DashDotLineTiny = 11,      /**< Alternate dots and dashes tiny. */
        DashDotLine2 = 12,     /**< Alternate dots and dashes small. */
        DashDotLineX2 = 13,   /**< Alternate dots and dashes large. */

        DivideLine = 14,      /**< dash, dot, dot. */
        DivideLineTiny = 15,      /**< dash, dot, dot, tiny */
        DivideLine2 = 16,     /**< dash, dot, dot small. */
        DivideLineX2 = 17,    /**< dash, dot, dot large. */

        CenterLine = 18,      /**< dash, small dash. */
        CenterLineTiny = 19,      /**< dash, small dash tiny */
        CenterLine2 = 20,     /**< dash, small dash small. */
        CenterLineX2 = 21,    /**< dash, small dash large. */

        BorderLine = 22,      /**< dash, dash, dot. */
        BorderLineTiny = 23,      /**< dash, dash, dot tiny */
        BorderLine2 = 24,     /**< dash, dash, dot small. */
        BorderLineX2 = 25,    /**< dash, dash, dot large. */

        LineTypeUnchanged=26,      /**< Line type defined by block not entity */
        LineSelected=27      /**< Line type for selected */
    };


    /**
     * Enum of line widths:
     */
    enum LineWidth {
        Width00 = 0,       /**< Width 1.  (0.00mm) */
        Width01 = 5,       /**< Width 2.  (0.05mm) */
        Width02 = 9,       /**< Width 3.  (0.09mm) */
        Width03 = 13,      /**< Width 4.  (0.13mm) */
        Width04 = 15,      /**< Width 5.  (0.15mm) */
        Width05 = 18,      /**< Width 6.  (0.18mm) */
        Width06 = 20,      /**< Width 7.  (0.20mm) */
        Width07 = 25,      /**< Width 8.  (0.25mm) */
        Width08 = 30,      /**< Width 9.  (0.30mm) */
        Width09 = 35,      /**< Width 10. (0.35mm) */
        Width10 = 40,      /**< Width 11. (0.40mm) */
        Width11 = 50,      /**< Width 12. (0.50mm) */
        Width12 = 53,      /**< Width 13. (0.53mm) */
        Width13 = 60,      /**< Width 14. (0.60mm) */
        Width14 = 70,      /**< Width 15. (0.70mm) */
        Width15 = 80,      /**< Width 16. (0.80mm) */
        Width16 = 90,      /**< Width 17. (0.90mm) */
        Width17 = 100,     /**< Width 18. (1.00mm) */
        Width18 = 106,     /**< Width 19. (1.06mm) */
        Width19 = 120,     /**< Width 20. (1.20mm) */
        Width20 = 140,     /**< Width 21. (1.40mm) */
        Width21 = 158,     /**< Width 22. (1.58mm) */
        Width22 = 200,     /**< Width 23. (2.00mm) */
        Width23 = 211,     /**< Width 24. (2.11mm) */
        WidthByLayer = -1, /**< Line width defined by layer not entity. */
        WidthByBlock = -2, /**< Line width defined by block not entity. */
        WidthDefault = -3,  /**< Line width defaults to the predefined line width. */
        WidthByDIPs = -4,   /*  kLnWtByDIPs*/
        WidthUnchanged = -10 /* utility type for not changed line width during editing*/
    };


    /**
     * Wrapper for Qt
     */
    LineWidth intToLineWidth(int w);
    int lineWidthToInt(LineWidth lw);
    LineWidth dxfInt2lineWidth(int i);
    int lineWidth2dxfInt(LineWidth lw);

    /**
     * Enum of cursor types.
     */
    enum CursorType {
        ArrowCursor,          /**< ArrowCursor - standard arrow cursor. */
        UpArrowCursor,        /**< UpArrowCursor - upwards arrow. */
        CrossCursor,          /**< CrossCursor - crosshair. */
        WaitCursor,           /**< WaitCursor - hourglass/watch. */
        IbeamCursor,          /**< IbeamCursor - ibeam/text entry. */
        SizeVerCursor,        /**< SizeVerCursor - vertical resize. */
        SizeHorCursor,        /**< SizeHorCursor - horizontal resize. */
        SizeBDiagCursor,      /**< SizeBDiagCursor - diagonal resize (/). */
        SizeFDiagCursor,      /**< SizeFDiagCursor - diagonal resize (\). */
        SizeAllCursor,        /**< SizeAllCursor - all directions resize. */
        BlankCursor,          /**< BlankCursor - blank/invisible cursor. */
        SplitVCursor,         /**< SplitVCursor - vertical splitting. */
        SplitHCursor,         /**< SplitHCursor - horizontal splitting. */
        PointingHandCursor,   /**< PointingHandCursor - a pointing hand. */
        ForbiddenCursor,      /**< ForbiddenCursor - a slashed circle. */
        WhatsThisCursor,      /**< WhatsThisCursor - an arrow with a ?. */
        OpenHandCursor,       /**< Qt OpenHandCursor */
        ClosedHandCursor,     /**< Qt ClosedHandCursor */
        CadCursor,            /**< CadCursor - a bigger cross. */
        DelCursor,            /**< DelCursor - cursor for choosing entities */
        SelectCursor,         /**< SelectCursor - for selecting single entities */
        MagnifierCursor,      /**< MagnifierCursor - a magnifying glass. */
        MovingHandCursor,      /**< Moving hand - a little flat hand. */
        NoCursorChange        /**< special value to indicate that no cursor change is requested. */
    };

    /**
     * Paper formats.
     */
    enum PaperFormat {
        FirstPaperFormat,
        Custom = FirstPaperFormat,

        /* ISO "A" Series */
        A0,   /* 841 x 1189 mm	33.1 x 46.8 in */
        A1,   /* 594 x 841 mm	23.4 x 33.1 in */
        A2,   /* 420 x 594 mm	16.5 x 23.4 in */
        A3,   /* 297 x 420 mm	11.7 x 16.5 in */
        A4,   /* 210 x 297 mm	8.3 x 11.7 in  */

        /* Removed ISO "B" and "C" series, C5E, Comm10E, DLE, (envelope sizes) */

        /* US "Office" */
        Letter,   /* 216 x 279 mm   8.5 x 11.0 in */
        Legal,    /* 216 x 356 mm   8.5 x 14.0 in */
        Tabloid,  /* 279 x 432 mm   11.0 x 17.0 in */
        /* Tabloid = Ledger = ANSI B.  Although, technically, both ANSI B and  
           Ledger are defined in the qt library as 431.8 mm x 279.4 mm / 17 
           x 11", while Tabloid is 279 x 432 mm / 11.0 x 17.0 in .  Using either 
           "Ledger" or "AnsiB" will result in the wrong page orientation when 
           printing or exporting to PDF.) */

        /* ANSI */
        //Ansi_A,   /* 216 x 279 mm	8.5 x 11.0 in */
        //Ansi_B,   /* 279 x 432 mm	11.0 x 17.0 in */
        Ansi_C,   /* 432 x 559 mm	17.0 x 22.0 in */
        Ansi_D,   /* 559 x 864 mm	22.0 x 34.0 in */
        Ansi_E,   /* 864 x 1118 mm	34.0 x 44.0 in */

        /* Architectural */
        Arch_A,    /* 229 x 305 mm	9.0 x 12.0 in */
        Arch_B,    /* 305 x 457 mm	12.0 x 18.0 in */
        Arch_C,    /* 457 x 610 mm	18.0 x 24.0 in */
        Arch_D,    /* 610 x 914 mm	24.0 x 36.0 in */
        Arch_E,    /* 914 x 1219 mm	36.0 x 48.0 in */

        NPageFormat
    };

        /**
         * Items that can be put on a overlay, the items are rendered in this order. Best is to leave snapper as last so
         * it always shows up
         */
        enum OverlayGraphics: short {
                OverlayEffects = 0,      // special effects, like glowing on hover
                ActionPreviewEntity = 1, // Action Entities
                Snapper = 2,             // Snapper
                InfoCursor = 3,          // Info Cursor
                LAST
        };

        //Different re-draw methods to speed up rendering of the screen
        enum RedrawMethod {
                RedrawNone = 0,
                RedrawGrid = 1,
                RedrawOverlay = 2,
                RedrawDrawing = 4,
                RedrawAll = 0xffff
        };

        /**
         * Text drawing direction.
         */
        enum TextLocaleDirection {
            locLeftToRight,     /** Left to right **/
            locRightToLeft      /** Right to Left **/
        };


        enum EntityDescriptionLevel{
            DescriptionCatched,
            DescriptionLong,
            DescriptionCreating,
            DescriptionModifying
        };

        /**
         * Curve end point type
         */
        enum class EndPointType: short {
            Start = 0,
            End = 1
        };


};

namespace Text
{
    /**
* Vertical alignments.
*/
    enum VAlign {
        VATop,    /**< Top. */
        VAMiddle, /**< Middle */
        VABottom  /**< Bottom */
      };

    /**
     * Horizontal alignments.
     */
    enum HAlign {
        HALeft,   /**< Left */
        HACenter, /**< Centered */
        HARight   /**< Right */
      };


    /**
     * MText drawing direction.
     */
    enum MTextDrawingDirection {
        LeftToRight, /**< Left to right */
        RightToLeft, /**< Right to left*/
        TopToBottom, /**< Top to bottom */
        ByStyle      /**< Inherited from associated text style */
      };

    /**
     * Line spacing style for MTexts.
     */
    enum MTextLineSpacingStyle {
        AtLeast, /**< Taller characters will override */
        Exact    /**< Taller characters will not override */
      };

    /**
   * Text drawing direction.
   */
    enum TextGeneration {
        None,      /**< Normal text */
        Backward,  /**< Mirrored in X */
        UpsideDown /**< Mirrored in Y */
    };
}

#endif