Example #1
0
        /// <summary>
        /// Parse a PathFigureCollection string
        /// </summary>
        internal void ParseToGeometryContext(
            StreamGeometryContext context,
            string pathString,
            int startIndex)
        {
            // [BreakingChange] Dev10 Bug #453199
            // We really should throw an ArgumentNullException here for context and pathString.
            
            // From original code
            // This is only used in call to Double.Parse
            _formatProvider = System.Globalization.CultureInfo.InvariantCulture;
            
            _context         = context;
            _pathString      = pathString;
            _pathLength      = pathString.Length;
            _curIndex        = startIndex;
            
            _secondLastPoint = new Point(0, 0);
            _lastPoint       = new Point(0, 0);
            _lastStart       = new Point(0, 0);
            
            _figureStarted = false;
            
            bool  first = true;
            
            char last_cmd = ' ';

            while (ReadToken()) // Empty path is allowed in XAML
            {
                char cmd = _token;

                if (first)
                {
                    if ((cmd != 'M') && (cmd != 'm'))  // Path starts with M|m
                    {
                        ThrowBadToken();
                    }
            
                    first = false;
                }                    
                
                switch (cmd)
                {
                case 'm': case 'M':
                    // XAML allows multiple points after M/m
                    _lastPoint = ReadPoint(cmd, ! AllowComma);
                    
                    context.BeginFigure(_lastPoint, IsFilled, ! IsClosed);
                    _figureStarted = true;
                    _lastStart = _lastPoint;
                    last_cmd = 'M';
                    
                    while (IsNumber(AllowComma))
                    {
                        _lastPoint = ReadPoint(cmd, ! AllowComma);
                        
                        context.LineTo(_lastPoint, IsStroked, ! IsSmoothJoin);
                        last_cmd = 'L';
                    }
                    break;

                case 'l': case 'L':
                case 'h': case 'H':
                case 'v': case 'V':
                    EnsureFigure();

                    do
                    {
                        switch (cmd)
                        {
                        case 'l': _lastPoint    = ReadPoint(cmd, ! AllowComma); break;
                        case 'L': _lastPoint    = ReadPoint(cmd, ! AllowComma); break;
                        case 'h': _lastPoint.X += ReadNumber(! AllowComma); break;
                        case 'H': _lastPoint.X  = ReadNumber(! AllowComma); break; 
                        case 'v': _lastPoint.Y += ReadNumber(! AllowComma); break;
                        case 'V': _lastPoint.Y  = ReadNumber(! AllowComma); break;
                        }

                        context.LineTo(_lastPoint, IsStroked, ! IsSmoothJoin); 
                    }
                    while (IsNumber(AllowComma));

                    last_cmd = 'L';
                    break;

                case 'c': case 'C': // cubic Bezier
                case 's': case 'S': // smooth cublic Bezier
                    EnsureFigure();
                    
                    do
                    {
                        Point p;
                        
                        if ((cmd == 's') || (cmd == 'S'))
                        {
                            if (last_cmd == 'C')
                            {
                                p = Reflect();
                            }
                            else
                            {
                                p = _lastPoint;
                            }

                            _secondLastPoint = ReadPoint(cmd, ! AllowComma);
                        }
                        else
                        {
                            p = ReadPoint(cmd, ! AllowComma);

                            _secondLastPoint = ReadPoint(cmd, AllowComma);
                        }
                            
                        _lastPoint = ReadPoint(cmd, AllowComma);

                        context.BezierTo(p, _secondLastPoint, _lastPoint, IsStroked, ! IsSmoothJoin);
                        
                        last_cmd = 'C';
                    }
                    while (IsNumber(AllowComma));
                    
                    break;
                    
                case 'q': case 'Q': // quadratic Bezier
                case 't': case 'T': // smooth quadratic Bezier
                    EnsureFigure();
                    
                    do
                    {
                        if ((cmd == 't') || (cmd == 'T'))
                        {
                            if (last_cmd == 'Q')
                            {
                                _secondLastPoint = Reflect();
                            }
                            else
                            {
                                _secondLastPoint = _lastPoint;
                            }

                            _lastPoint = ReadPoint(cmd, ! AllowComma);
                        }
                        else
                        {
                            _secondLastPoint = ReadPoint(cmd, ! AllowComma);
                            _lastPoint = ReadPoint(cmd, AllowComma);
                        }

                        context.QuadraticBezierTo(_secondLastPoint, _lastPoint, IsStroked, ! IsSmoothJoin);
                        
                        last_cmd = 'Q';
                    }
                    while (IsNumber(AllowComma));
                    
                    break;
                    
                case 'a': case 'A':
                    EnsureFigure();
                    
                    do
                    {
                        // A 3,4 5, 0, 0, 6,7
                        double w        = ReadNumber(! AllowComma);
                        double h        = ReadNumber(AllowComma);
                        double rotation = ReadNumber(AllowComma);
                        bool large      = ReadBool();
                        bool sweep      = ReadBool();
                        
                        _lastPoint = ReadPoint(cmd, AllowComma);

                        context.ArcTo(
                            _lastPoint,
                            new Size(w, h),
                            rotation,
                            large,
#if PBTCOMPILER
                            sweep,
#else                            
                            sweep ? SweepDirection.Clockwise : SweepDirection.Counterclockwise,
#endif                             
                            IsStroked,
                            ! IsSmoothJoin
                            );
                    }
                    while (IsNumber(AllowComma));
                    
                    last_cmd = 'A';
                    break;
                    
                case 'z':
                case 'Z':
                    EnsureFigure();
                    context.SetClosedState(IsClosed);
                    
                    _figureStarted = false;
                    last_cmd = 'Z';
                    
                    _lastPoint = _lastStart; // Set reference point to be first point of current figure
                    break;
                    
                default:
                    ThrowBadToken();
                    break;
                }
            }
        }
Example #2
0
 /// <summary>
 /// SerializeData - Serialize the contents of this Segment to the provided context.
 /// </summary>
 internal override void SerializeData(StreamGeometryContext ctx)
 {
     ctx.QuadraticBezierTo(Point1, Point2, IsStroked, IsSmoothJoin);
 }
 /// <summary>
 /// SerializeData - Serialize the contents of this Segment to the provided context.
 /// </summary>
 internal override void SerializeData(StreamGeometryContext ctx)
 {
     ctx.QuadraticBezierTo(Point1, Point2, IsStroked, IsSmoothJoin);
 }
        public static void DrawFigure(StreamGeometryContext ctx, PathFigure figure)
        {
            ctx.BeginFigure(figure.StartPoint, figure.IsFilled, figure.IsClosed);
            foreach (var segment in figure.Segments)
            {
                var lineSegment = segment as WpfLineSegment;
                if (lineSegment != null) { ctx.LineTo(lineSegment.Point, lineSegment.IsStroked, lineSegment.IsSmoothJoin); continue; }

                var bezierSegment = segment as BezierSegment;
                if (bezierSegment != null) { ctx.BezierTo(bezierSegment.Point1, bezierSegment.Point2, bezierSegment.Point3, bezierSegment.IsStroked, bezierSegment.IsSmoothJoin); continue; }

                var quadraticSegment = segment as QuadraticBezierSegment;
                if (quadraticSegment != null) { ctx.QuadraticBezierTo(quadraticSegment.Point1, quadraticSegment.Point2, quadraticSegment.IsStroked, quadraticSegment.IsSmoothJoin); continue; }

                var polyLineSegment = segment as PolyLineSegment;
                if (polyLineSegment != null) { ctx.PolyLineTo(polyLineSegment.Points, polyLineSegment.IsStroked, polyLineSegment.IsSmoothJoin); continue; }

                var polyBezierSegment = segment as PolyBezierSegment;
                if (polyBezierSegment != null) { ctx.PolyBezierTo(polyBezierSegment.Points, polyBezierSegment.IsStroked, polyBezierSegment.IsSmoothJoin); continue; }

                var polyQuadraticSegment = segment as PolyQuadraticBezierSegment;
                if (polyQuadraticSegment != null) { ctx.PolyQuadraticBezierTo(polyQuadraticSegment.Points, polyQuadraticSegment.IsStroked, polyQuadraticSegment.IsSmoothJoin); continue; }

                var arcSegment = segment as ArcSegment;
                if (arcSegment != null) { ctx.ArcTo(arcSegment.Point, arcSegment.Size, arcSegment.RotationAngle, arcSegment.IsLargeArc, arcSegment.SweepDirection, arcSegment.IsStroked, arcSegment.IsSmoothJoin); continue; }
            }
        }