Example #1
0
        Expression CreateStroke(string stroke, string strokeWidth, string opacity, SvgRendererContext context)
        {
            Expression colorArgument;

            if (stroke == null || stroke == "none")
            {
                return(null);
            }
            var alpha = opacity == null ? null : (int?)(((SvgLength)opacity).Value * 255);

            if (stroke == "currentColor")
            {
                colorArgument = Expression.PropertyOrField(context.State, "CurrentColor");
                if (alpha.HasValue)
                {
                    var alphaArgument = Expression.Constant(alpha.Value);
                    colorArgument = Expression.Call(typeof(Color), "FromArgb", null, alphaArgument, colorArgument);
                }
            }
            else
            {
                var color = ((SvgColor)stroke).Color;
                if (alpha.HasValue)
                {
                    color = Color.FromArgb(alpha.Value, color);
                }
                colorArgument = Expression.Constant(color);
            }
            var width         = strokeWidth == null ? 1 : ((SvgLength)strokeWidth);
            var widthArgument = Expression.Constant(width.Value);

            return(Expression.Call(context.State, "StrokeStyle", null, colorArgument, widthArgument));
        }
Example #2
0
 void CreateDrawChildren(SvgElement element, Matrix transform, SvgRendererContext context)
 {
     foreach (SvgElement child in element.Children)
     {
         CreateDrawBody(child, transform, context);
     }
 }
Example #3
0
        void CreateDrawEllipse(SvgElement element, Matrix transform, SvgRendererContext context)
        {
            var style = CreateStyle(element, context);

            if (style != null)
            {
                var cx = ParseFloat(element, "cx");
                var cy = ParseFloat(element, "cy");
                var rx = ParseFloat(element, "rx");
                var ry = ParseFloat(element, "ry");
                var x  = Expression.Constant(cx - rx);
                var y  = Expression.Constant(cy - ry);
                var dx = Expression.Constant(2f * rx);
                var dy = Expression.Constant(2f * ry);
                CreateDrawTransform(element, transform, context);
                if (style.Fill != null)
                {
                    context.Expressions.Add(Expression.Call(context.Graphics, "FillEllipse", null, style.Fill, x, y, dx, dy));
                }
                if (style.Stroke != null)
                {
                    context.Expressions.Add(Expression.Call(context.Graphics, "DrawEllipse", null, style.Stroke, x, y, dx, dy));
                }
                CreateResetTransform(context);
            }
        }
Example #4
0
        SvgRenderer CreateRenderer(SvgElement element)
        {
            var context = new SvgRendererContext();

            CreateDrawBody(element, null, context);
            var body     = context.Expressions.Count > 0 ? (Expression)Expression.Block(context.Expressions) : Expression.Empty();
            var renderer = Expression.Lambda <SvgRenderer>(body, context.State, context.Graphics);

            return(renderer.Compile());
        }
Example #5
0
        Expression CreateFill(SvgStyle style, SvgRendererContext context)
        {
            if (style == null)
            {
                return(CreateFill(null, null, context));
            }
            var fill    = (string)style.Get("fill");
            var opacity = (string)style.Get("fill-opacity");

            return(CreateFill(fill, opacity, context));
        }
Example #6
0
        void CreateDrawDefinitions(SvgElement element, SvgRendererContext context)
        {
            foreach (SvgElement child in element.Children)
            {
                switch (child.Name)
                {
                case "linearGradient": CreateLinearGradient(child, context); break;

                default: continue;
                }
            }
        }
Example #7
0
        Expression CreateStroke(SvgStyle style, SvgRendererContext context)
        {
            if (style == null)
            {
                return(null);
            }
            var stroke        = (string)style.Get("stroke");
            var strokeWidth   = (string)style.Get("stroke-width");
            var strokeOpacity = (string)style.Get("stroke-opacity");

            return(CreateStroke(stroke, strokeWidth, strokeOpacity, context));
        }
Example #8
0
        void CreateDrawTransform(SvgElement element, Matrix transform, SvgRendererContext context)
        {
            var localTransform = CreateTransform(element, transform);
            var scale          = Expression.PropertyOrField(context.State, "Scale");
            var translation    = Expression.PropertyOrField(context.State, "Translation");
            var offsetX        = Expression.PropertyOrField(translation, "X");
            var offsetY        = Expression.PropertyOrField(translation, "Y");

            context.Expressions.Add(Expression.Call(context.Graphics, "TranslateTransform", null, offsetX, offsetY));
            context.Expressions.Add(Expression.Call(context.Graphics, "ScaleTransform", null, scale, scale));
            if (localTransform != null)
            {
                context.Expressions.Add(Expression.Call(context.Graphics, "MultiplyTransform", null, localTransform));
            }
        }
Example #9
0
        SvgDrawingStyle CreateStyle(SvgElement element, SvgRendererContext context)
        {
            Expression fill, stroke;
            var        style = GetElementStyle(element);

            fill   = CreateFill(style, context);
            stroke = CreateStroke(style, context);
            if (fill == null && stroke == null)
            {
                return(null);
            }
            else
            {
                return(new SvgDrawingStyle(fill, stroke));
            }
        }
Example #10
0
        void CreateLinearGradient(SvgElement element, SvgRendererContext context)
        {
            var linearGradient = element as SvgLinearGradientElement;

            if (linearGradient != null)
            {
                var color1 = default(Color);
                var color2 = default(Color);
                LinearGradientBrush gradient;
                if (linearGradient.Children.Count == 2)
                {
                    var stop1 = linearGradient.Children[0] as SvgStopElement;
                    var stop2 = linearGradient.Children[1] as SvgStopElement;
                    if (stop1 != null && stop2 != null)
                    {
                        color1 = ParseStopColor(stop1);
                        color2 = ParseStopColor(stop2);
                    }
                }
                else
                {
                    Brush referenceGradient;
                    LinearGradientBrush referenceLinearGradient;
                    var href = new SvgXRef(linearGradient).Href;
                    if (href != null && context.Gradients.TryGetValue(href, out referenceGradient) &&
                        (referenceLinearGradient = referenceGradient as LinearGradientBrush) != null)
                    {
                        color1 = referenceLinearGradient.LinearColors[0];
                        color2 = referenceLinearGradient.LinearColors[1];
                    }
                }

                var gradientTransform = ParseTransform(linearGradient, null, "gradientTransform");
                var points            = new[]
                {
                    ParsePoint(linearGradient, "x1", "y1").GetValueOrDefault(PointF.Empty),
                    ParsePoint(linearGradient, "x2", "y2").GetValueOrDefault(new PointF(1, 1))
                };
                if (gradientTransform != null)
                {
                    gradientTransform.TransformPoints(points);
                }
                gradient = new LinearGradientBrush(points[0], points[1], color1, color2);
                context.Gradients.Add(new SvgUriReference(linearGradient).Href, gradient);
                disposableResources.Add(gradient);
            }
        }
Example #11
0
        void CreateDrawPath(SvgElement element, Matrix transform, SvgRendererContext context)
        {
            var style = CreateStyle(element, context);

            if (style != null)
            {
                var path = CreatePath(element, "d");
                CreateDrawTransform(element, transform, context);
                if (style.Fill != null)
                {
                    context.Expressions.Add(Expression.Call(context.Graphics, "FillPath", null, style.Fill, path));
                }
                if (style.Stroke != null)
                {
                    context.Expressions.Add(Expression.Call(context.Graphics, "DrawPath", null, style.Stroke, path));
                }
                CreateResetTransform(context);
            }
        }
Example #12
0
        void CreateDrawBody(SvgElement element, Matrix transform, SvgRendererContext context)
        {
            switch (element.Name)
            {
            case "rect": CreateDrawRectangle(element, transform, context); break;

            case "circle": CreateDrawCircle(element, transform, context); break;

            case "ellipse": CreateDrawEllipse(element, transform, context); break;

            case "path": CreateDrawPath(element, transform, context); break;

            case "svg": CreateDrawChildren(element, transform, context); break;

            case "defs": CreateDrawDefinitions(element, context); break;

            case "g":
                var localTransform = ParseTransform(element, transform);
                CreateDrawChildren(element, localTransform, context);
                break;
            }
        }
Example #13
0
        void CreateDrawRectangle(SvgElement element, Matrix transform, SvgRendererContext context)
        {
            var style = CreateStyle(element, context);

            if (style != null)
            {
                var x      = CreateFloat(element, "x");
                var y      = CreateFloat(element, "y");
                var width  = CreateFloat(element, "width");
                var height = CreateFloat(element, "height");
                CreateDrawTransform(element, transform, context);
                if (style.Fill != null)
                {
                    context.Expressions.Add(Expression.Call(context.Graphics, "FillRectangle", null, style.Fill, x, y, width, height));
                }
                if (style.Stroke != null)
                {
                    context.Expressions.Add(Expression.Call(context.Graphics, "DrawRectangle", null, style.Stroke, x, y, width, height));
                }
                CreateResetTransform(context);
            }
        }
Example #14
0
        Expression CreateFill(string fill, string opacity, SvgRendererContext context)
        {
            const string UrlPrefix = "url(";

            if (fill == "none")
            {
                return(null);
            }
            if (fill == null)
            {
                return(Expression.Call(context.State, "FillStyle", null));
            }
            if (fill.StartsWith(UrlPrefix))
            {
                Brush brush;
                var   href = fill.Substring(UrlPrefix.Length, fill.Length - UrlPrefix.Length - 1);
                if (!context.Gradients.TryGetValue(href, out brush))
                {
                    return(null);
                }
                else
                {
                    return(Expression.Constant(brush));
                }
            }
            else
            {
                var color = ((SvgColor)fill).Color;
                if (opacity != null)
                {
                    var opacityValue = ((SvgLength)opacity).Value;
                    color = Color.FromArgb((int)(opacityValue * 255), color);
                }

                return(Expression.Call(context.State, "FillStyle", null, Expression.Constant(color)));
            }
        }
Example #15
0
 void CreateResetTransform(SvgRendererContext context)
 {
     context.Expressions.Add(Expression.Call(context.Graphics, "ResetTransform", null));
 }