/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="SvgRenderer"/> object.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected override void Render(SvgRenderer renderer)
{
// Do nothing
}
/// <summary>
/// Renders the children of this <see cref="SvgElement"/>.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> to render the child <see cref="SvgElement"/>s to.</param>
protected virtual void RenderChildren(SvgRenderer renderer)
{
foreach (SvgElement element in this.Children)
{
element.Render(renderer);
}
}
/// <summary> /// Gets a <see cref="Brush"/> representing the current paint server. /// </summary> /// <param name="styleOwner">The owner <see cref="SvgVisualElement"/>.</param> /// <param name="opacity">The opacity of the brush.</param> public abstract Brush GetBrush(SvgVisualElement styleOwner, SvgRenderer renderer, float opacity);
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="SvgRenderer"/> object.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected virtual void Render(SvgRenderer renderer)
{
this.PushTransforms(renderer);
this.RenderChildren(renderer);
this.PopTransforms(renderer);
}
public static System.Drawing.PointF GetDevicePointOffset(SvgUnit x, SvgUnit y, SvgRenderer renderer, SvgElement owner)
{
return new System.Drawing.PointF(x.ToDeviceValue(renderer, UnitRenderingType.HorizontalOffset, owner),
y.ToDeviceValue(renderer, UnitRenderingType.VerticalOffset, owner));
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="SvgRenderer"/> object.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected override void Render(SvgRenderer renderer)
{
// Never render paint servers or their children
}
/// <summary>
/// Initializes the <see cref="SvgText"/> class.
/// </summary>
static SvgText()
{
Bitmap bitmap = new Bitmap(1, 1);
_stringMeasure = SvgRenderer.FromImage(bitmap);
_stringMeasure.TextRenderingHint = TextRenderingHint.AntiAlias;
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
protected override void Render(SvgRenderer renderer)
{
if (Width.Value > 0.0f && Height.Value > 0.0f)
{
base.Render(renderer);
}
}
/// <summary>
/// Creates a new <see cref="SvgRenderer"/> from the specified <see cref="Image"/>.
/// </summary>
/// <param name="image"><see cref="Image"/> from which to create the new <see cref="SvgRenderer"/>.</param>
public static SvgRenderer FromImage(Image image)
{
SvgRenderer renderer = new SvgRenderer();
renderer._innerGraphics = Graphics.FromImage(image);
return renderer;
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="SvgRenderer"/> object.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected override void Render(SvgRenderer renderer)
{
// Do nothing. Children should NOT be rendered.
}
public PointF ToDeviceValue(SvgRenderer renderer, SvgElement owner)
{
return SvgUnit.GetDevicePoint(this.X, this.Y, renderer, owner);
}
/// <summary>
/// Applies the required transforms to <see cref="SvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> to be transformed.</param>
protected internal override void PushTransforms(SvgRenderer renderer)
{
base.PushTransforms(renderer);
renderer.TranslateTransform(this.X.ToDeviceValue(this), this.Y.ToDeviceValue(this, true));
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
/// <param name="graphics">The <see cref="SvgRenderer"/> object to render to.</param>
protected override void Render(SvgRenderer renderer)
{
if (this.Path != null && this.Visible)
{
this.PushTransforms(renderer);
this.SetClip(renderer);
// If this element needs smoothing enabled turn anti-aliasing on
if (this.RequiresSmoothRendering)
{
renderer.SmoothingMode = SmoothingMode.AntiAlias;
}
this.RenderFill(renderer);
this.RenderStroke(renderer);
// Reset the smoothing mode
if (this.RequiresSmoothRendering && renderer.SmoothingMode == SmoothingMode.AntiAlias)
{
renderer.SmoothingMode = SmoothingMode.Default;
}
this.ResetClip(renderer);
this.PopTransforms(renderer);
}
}
public override GraphicsPath Path(SvgRenderer renderer)
{
if (_Path == null || this.IsPathDirty)
{
_Path = new GraphicsPath();
try
{
for (int i = 0; i < Points.Count; i += 2)
{
PointF endPoint = new PointF(Points[i].ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
Points[i + 1].ToDeviceValue(renderer, UnitRenderingType.Vertical, this));
// TODO: Remove unrequired first line
if (_Path.PointCount == 0)
{
_Path.AddLine(endPoint, endPoint);
}
else
{
_Path.AddLine(_Path.GetLastPoint(), endPoint);
}
}
}
catch (Exception exc)
{
Trace.TraceError("Error rendering points: " + exc.Message);
}
this.IsPathDirty = false;
}
return _Path;
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
/// <param name="graphics">The <see cref="Graphics"/> object to render to.</param>
protected override void Render(SvgRenderer renderer)
{
this.PushTransforms(renderer);
this.SetClip(renderer);
base.RenderChildren(renderer);
this.ResetClip(renderer);
this.PopTransforms(renderer);
}
/// <summary>
/// Renders the fill of the <see cref="SvgVisualElement"/> to the specified <see cref="SvgRenderer"/>
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected internal virtual void RenderFill(SvgRenderer renderer)
{
if (this.Fill != null)
{
using (Brush brush = this.Fill.GetBrush(this, this.FillOpacity))
{
if (brush != null)
{
this.Path.FillMode = this.FillRule == SvgFillRule.NonZero ? FillMode.Winding : FillMode.Alternate;
renderer.FillPath(brush, this.Path);
}
}
}
}
/// <summary>
/// Applies the required transforms to <see cref="SvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> to be transformed.</param>
protected internal override void PushTransforms(SvgRenderer renderer)
{
base.PushTransforms(renderer);
if (!this.ViewBox.Equals(SvgViewBox.Empty))
{
if (this.ViewBox.MinX > 0 || this.ViewBox.MinY > 0)
{
renderer.TranslateTransform(this.ViewBox.MinX, this.ViewBox.MinY, MatrixOrder.Append);
}
renderer.ScaleTransform(this.Width.ToDeviceValue() / this.ViewBox.Width, this.Height.ToDeviceValue() / this.ViewBox.Height, MatrixOrder.Append);
}
}
protected override void Render(SvgRenderer renderer)
{
this.PushTransforms(renderer);
SvgVisualElement element = (SvgVisualElement)this.OwnerDocument.IdManager.GetElementById(this.ReferencedElement);
// For the time of rendering we want the referenced element to inherit
// this elements transforms
SvgElement parent = element._parent;
element._parent = this;
element.RenderElement(renderer);
element._parent = parent;
this.PopTransforms(renderer);
}
public override Brush GetBrush(SvgVisualElement styleOwner, SvgRenderer renderer, float opacity)
{
//is none?
if (this == SvgPaintServer.None)
{
return(new SolidBrush(Color.Transparent));
}
int alpha = (int)((opacity * (this.Colour.A / 255.0f)) * 255);
Color colour = Color.FromArgb(alpha, this.Colour);
return(new SolidBrush(colour));
}
/// <summary>
/// Gets the <see cref="GraphicsPath"/> for this element.
/// </summary>
public override GraphicsPath Path(SvgRenderer renderer)
{
if (this._path == null || this.IsPathDirty)
{
_path = new GraphicsPath();
foreach (SvgPathSegment segment in this.PathData)
{
segment.AddToPath(_path);
}
this.IsPathDirty = false;
}
return(_path);
}
/// <summary>
/// Renders the <see cref="SvgDocument"/> into a given Bitmap <see cref="Bitmap"/>.
/// </summary>
public virtual void Draw(Bitmap bitmap)
{
//Trace.TraceInformation("Begin Render");
using (var renderer = SvgRenderer.FromImage(bitmap))
{
// EO, 2014-12-05: Requested to ensure proper zooming out (reduce size). Otherwise it clip the image.
this.Overflow = SvgOverflow.Auto;
var boundable = new GenericBoundable(0, 0, bitmap.Width, bitmap.Height);
this.Draw(renderer, boundable);
}
//Trace.TraceInformation("End Render");
}
// public override SvgElementCollection Children
// {
// get
// {
// SvgElement element = this.OwnerDocument.IdManager.GetElementById(this.ReferencedElement);
// SvgElementCollection elements = new SvgElementCollection(this, true);
// elements.Add(element);
// return elements;
// }
// }
protected override void Render(SvgRenderer renderer)
{
this.PushTransforms(renderer);
SvgVisualElement element = (SvgVisualElement)this.OwnerDocument.IdManager.GetElementById(this.ReferencedElement);
// For the time of rendering we want the referenced element to inherit
// this elements transforms
SvgElement parent = element._parent;
element._parent = this;
element.RenderElement(renderer);
element._parent = parent;
this.PopTransforms(renderer);
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
/// <param name="graphics">The <see cref="Graphics"/> object to render to.</param>
protected override void Render(SvgRenderer renderer)
{
if (!Visible || !Displayable)
{
return;
}
if (this.PushTransforms(renderer))
{
this.SetClip(renderer);
base.RenderChildren(renderer);
this.ResetClip(renderer);
this.PopTransforms(renderer);
}
}
public override System.Drawing.Drawing2D.GraphicsPath Path(SvgRenderer renderer)
{
if (this._path == null || this.IsPathDirty)
{
PointF start = new PointF(this.StartX.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
this.StartY.ToDeviceValue(renderer, UnitRenderingType.Vertical, this));
PointF end = new PointF(this.EndX.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
this.EndY.ToDeviceValue(renderer, UnitRenderingType.Vertical, this));
this._path = new GraphicsPath();
this._path.AddLine(start, end);
this.IsPathDirty = false;
}
return(this._path);
}
/// <summary>
/// Gets the <see cref="GraphicsPath"/> for this element.
/// </summary>
/// <value></value>
public override GraphicsPath Path(SvgRenderer renderer)
{
if (this._path == null || this.IsPathDirty)
{
var center = SvgUnit.GetDevicePoint(this._centerX, this._centerY, renderer, this);
var radius = SvgUnit.GetDevicePoint(this._radiusX, this._radiusY, renderer, this);
this._path = new GraphicsPath();
_path.StartFigure();
_path.AddEllipse(center.X - radius.X, center.Y - radius.Y, 2 * radius.X, 2 * radius.Y);
_path.CloseFigure();
this.IsPathDirty = false;
}
return(_path);
}
/// <summary>
/// Renders the <see cref="SvgDocument"/> into a given Bitmap <see cref="Bitmap"/>.
/// </summary>
public virtual void Draw(Bitmap bitmap)
{
//Trace.TraceInformation("Begin Render");
using (var renderer = SvgRenderer.FromImage(bitmap))
{
renderer.TextRenderingHint = TextRenderingHint.AntiAlias;
renderer.TextContrast = 1;
renderer.PixelOffsetMode = PixelOffsetMode.Half;
this.Render(renderer);
renderer.Save();
}
//Trace.TraceInformation("End Render");
}
/// <summary>
/// Create a pen that can be used to render this marker
/// </summary>
/// <param name="pStroke"></param>
/// <returns></returns>
private Pen CreatePen(SvgPath pPath, SvgRenderer renderer)
{
Brush pBrush = pPath.Stroke.GetBrush(this, renderer, Opacity);
switch (MarkerUnits)
{
case SvgMarkerUnits.strokeWidth:
return(new Pen(pBrush, StrokeWidth.ToDeviceValue(renderer, UnitRenderingType.Other, this) *
pPath.StrokeWidth.ToDeviceValue(renderer, UnitRenderingType.Other, this)));
case SvgMarkerUnits.userSpaceOnUse:
return(new Pen(pBrush, StrokeWidth.ToDeviceValue(renderer, UnitRenderingType.Other, this)));
}
return(new Pen(pBrush, StrokeWidth.ToDeviceValue(renderer, UnitRenderingType.Other, this)));
}
/// <summary>
/// Common code for rendering a marker once the orientation angle has been calculated
/// </summary>
/// <param name="fAngle"></param>
/// <param name="pRenderer"></param>
/// <param name="pOwner"></param>
/// <param name="pMarkerPoint"></param>
private void RenderPart2(float fAngle, SvgRenderer pRenderer, SvgPath pOwner, PointF pMarkerPoint)
{
Pen pRenderPen = CreatePen(pOwner, pRenderer);
GraphicsPath markerPath = GetClone(pOwner);
Matrix transMatrix = new Matrix();
transMatrix.Translate(pMarkerPoint.X, pMarkerPoint.Y);
if (Orient.IsAuto)
{
transMatrix.Rotate(fAngle);
}
else
{
transMatrix.Rotate(Orient.Angle);
}
switch (MarkerUnits)
{
case SvgMarkerUnits.strokeWidth:
transMatrix.Translate(AdjustForViewBoxWidth(-RefX.ToDeviceValue(pRenderer, UnitRenderingType.Horizontal, this) *
pOwner.StrokeWidth.ToDeviceValue(pRenderer, UnitRenderingType.Other, this)),
AdjustForViewBoxHeight(-RefY.ToDeviceValue(pRenderer, UnitRenderingType.Vertical, this) *
pOwner.StrokeWidth.ToDeviceValue(pRenderer, UnitRenderingType.Other, this)));
break;
case SvgMarkerUnits.userSpaceOnUse:
transMatrix.Translate(-RefX.ToDeviceValue(pRenderer, UnitRenderingType.Horizontal, this),
-RefY.ToDeviceValue(pRenderer, UnitRenderingType.Vertical, this));
break;
}
markerPath.Transform(transMatrix);
pRenderer.DrawPath(pRenderPen, markerPath);
SvgPaintServer pFill = Fill;
SvgFillRule pFillRule = FillRule; // TODO: What do we use the fill rule for?
float fOpacity = FillOpacity;
if (pFill != null)
{
Brush pBrush = pFill.GetBrush(this, pRenderer, fOpacity);
pRenderer.FillPath(pBrush, markerPath);
pBrush.Dispose();
}
pRenderPen.Dispose();
markerPath.Dispose();
transMatrix.Dispose();
}
private void Render(ISvgRenderer renderer, bool renderFilter)
{
if (this.Visible && this.Displayable && this.PushTransforms(renderer) &&
(!this.Renderable || this.Path(renderer) != null))
{
if (!(renderFilter && this.RenderFilter(renderer)))
{
this.SetClip(renderer);
if (this.Renderable)
{
var opacity = Math.Min(Math.Max(this.Opacity, 0), 1);
if (opacity == 1f)
{
this.RenderFillAndStroke(renderer);
}
else
{
IsPathDirty = true;
var bounds = this.Bounds;
IsPathDirty = true;
using (var canvas = new Bitmap((int)Math.Ceiling(bounds.Width), (int)Math.Ceiling(bounds.Height)))
{
using (var canvasRenderer = SvgRenderer.FromImage(canvas))
{
canvasRenderer.SetBoundable(renderer.GetBoundable());
canvasRenderer.TranslateTransform(-bounds.X, -bounds.Y);
this.RenderFillAndStroke(canvasRenderer);
}
var srcRect = new RectangleF(0f, 0f, bounds.Width, bounds.Height);
renderer.DrawImage(canvas, bounds, srcRect, GraphicsUnit.Pixel, opacity);
}
}
}
else
{
base.RenderChildren(renderer);
}
this.ResetClip(renderer);
this.PopTransforms(renderer);
}
}
}
/// <summary>
/// Renders the stroke of the <see cref="SvgVisualElement"/> to the specified <see cref="SvgRenderer"/>
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected internal virtual void RenderStroke(SvgRenderer renderer)
{
if (this.Stroke != null)
{
float strokeWidth = this.StrokeWidth.ToDeviceValue(this);
using (var pen = new Pen(this.Stroke.GetBrush(this, this.StrokeOpacity), strokeWidth))
{
if (this.StrokeDashArray != null && this.StrokeDashArray.Count > 0)
{
/* divide by stroke width - GDI behaviour that I don't quite understand yet.*/
pen.DashPattern = this.StrokeDashArray.ConvertAll(u => u.Value / ((strokeWidth <= 0) ? 1 : strokeWidth)).ToArray();
}
renderer.DrawPath(pen, this.Path);
}
}
}
/// <summary>
/// Renders the <see cref="SvgDocument"/> in given size and returns the image as a <see cref="Bitmap"/>.
/// If one of rasterWidth and rasterHeight is zero, the image is scaled preserving aspect ratio,
/// otherwise the aspect ratio is ignored.
/// </summary>
/// <returns>A <see cref="Bitmap"/> containing the rendered document.</returns>
public virtual Bitmap Draw(int rasterWidth, int rasterHeight)
{
var imageSize = GetDimensions();
var bitmapSize = imageSize;
this.RasterizeDimensions(ref bitmapSize, rasterWidth, rasterHeight);
if (bitmapSize.Width == 0 || bitmapSize.Height == 0)
{
return(null);
}
Bitmap bitmap = null;
try
{
try
{
bitmap = new Bitmap((int)Math.Round(bitmapSize.Width), (int)Math.Round(bitmapSize.Height));
}
catch (ArgumentException e)
{
// When processing too many files at one the system can run out of memory
throw new SvgMemoryException("Cannot process SVG file, cannot allocate the required memory", e);
}
using (var renderer = SvgRenderer.FromImage(bitmap))
{
renderer.ScaleTransform(bitmapSize.Width / imageSize.Width, bitmapSize.Height / imageSize.Height);
var boundable = new GenericBoundable(0, 0, imageSize.Width, imageSize.Height);
this.Draw(renderer, boundable);
}
}
catch
{
if (bitmap != null)
{
bitmap.Dispose();
}
throw;
}
return(bitmap);
}
public override Brush GetBrush(SvgVisualElement owner, SvgRenderer renderer, float opacity)
{
// Need at least 2 colours to do the gradient fill
if (this.Stops.Count < 2)
{
return(null);
}
PointF start;
PointF end;
RectangleF bounds = (this.GradientUnits == SvgCoordinateUnits.ObjectBoundingBox) ? owner.Bounds : owner.OwnerDocument.GetDimensions();
// Have start/end points been set? If not the gradient is horizontal
if (!this.End.IsEmpty())
{
// Get the points to work out an angle
if (this.Start.IsEmpty())
{
start = bounds.Location;
}
else
{
start = new PointF(this.Start.X.ToDeviceValue(owner), this.Start.Y.ToDeviceValue(owner, true));
}
float x = (this.End.X.IsEmpty) ? start.X : this.End.X.ToDeviceValue(owner);
end = new PointF(x, this.End.Y.ToDeviceValue(owner, true));
}
else
{
// Default: horizontal
start = bounds.Location;
end = new PointF(bounds.Right, bounds.Top);
}
LinearGradientBrush gradient = new LinearGradientBrush(start, end, Color.Transparent, Color.Transparent);
gradient.InterpolationColors = base.GetColourBlend(owner, opacity);
// Needed to fix an issue where the gradient was being wrapped when though it had the correct bounds
gradient.WrapMode = WrapMode.TileFlipX;
return(gradient);
}
private ColorBlend CalculateColorBlend(SvgRenderer renderer, float opacity, float specifiedRadius, float effectiveRadius)
{
var colorBlend = GetColorBlend(renderer, opacity, true);
if (specifiedRadius >= effectiveRadius)
{
return(colorBlend);
}
for (var i = 0; i < colorBlend.Positions.Length - 1; i++)
{
colorBlend.Positions[i] = 1 - (specifiedRadius / effectiveRadius) * (1 - colorBlend.Positions[i]);
}
colorBlend.Positions = new[] { 0F }.Concat(colorBlend.Positions).ToArray();
colorBlend.Colors = new[] { colorBlend.Colors.First() }.Concat(colorBlend.Colors).ToArray();
return(colorBlend);
}
/// <summary>
/// Renders the <see cref="SvgDocument"/> into a given Bitmap <see cref="Bitmap"/>.
/// </summary>
public virtual void Draw(Bitmap bitmap)
{
//Trace.TraceInformation("Begin Render");
try
{
using (var renderer = SvgRenderer.FromImage(bitmap))
{
renderer.SetBoundable(new GenericBoundable(0, 0, bitmap.Width, bitmap.Height));
this.Render(renderer);
}
}
catch
{
throw;
}
//Trace.TraceInformation("End Render");
}
/// <summary>
/// Renders the <see cref="SvgDocument"/> to the specified <see cref="Graphics"/>.
/// </summary>
/// <param name="graphics">The <see cref="Graphics"/> to be rendered to.</param>
/// <param name="size">The <see cref="SizeF"/> to render the document. If <c>null</c> document is rendered at the default document size.</param>
/// <exception cref="ArgumentNullException">The <paramref name="graphics"/> parameter cannot be <c>null</c>.</exception>
public void Draw(Graphics graphics, SizeF?size)
{
if (graphics == null)
{
throw new ArgumentNullException("graphics");
}
var renderer = SvgRenderer.FromGraphics(graphics);
if (size.HasValue)
{
renderer.SetBoundable(new GenericBoundable(0, 0, size.Value.Width, size.Value.Height));
}
else
{
renderer.SetBoundable(this);
}
this.Render(renderer);
}
/// <summary>
/// Applies the required transforms to <see cref="SvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> to be transformed.</param>
protected internal virtual void PushTransforms(SvgRenderer renderer)
{
_graphicsMatrix = renderer.Transform;
// Return if there are no transforms
if (this.Transforms == null || this.Transforms.Count == 0)
{
return;
}
Matrix transformMatrix = renderer.Transform;
foreach (SvgTransform transformation in this.Transforms)
{
transformMatrix.Multiply(transformation.Matrix);
}
renderer.Transform = transformMatrix;
}
public override Brush GetBrush(SvgVisualElement renderingElement, SvgRenderer renderer, float opacity)
{
LoadStops(renderingElement);
if (IsInvalid)
{
return(null);
}
try
{
if (this.GradientUnits == SvgCoordinateUnits.ObjectBoundingBox)
{
renderer.Boundable(renderingElement);
}
var specifiedStart = CalculateStart(renderer);
var specifiedEnd = CalculateEnd(renderer);
var effectiveStart = specifiedStart;
var effectiveEnd = specifiedEnd;
if (NeedToExpandGradient(renderingElement, specifiedStart, specifiedEnd))
{
var expansion = ExpandGradient(renderingElement, specifiedStart, specifiedEnd);
effectiveStart = expansion.StartPoint;
effectiveEnd = expansion.EndPoint;
}
return(new LinearGradientBrush(effectiveStart, effectiveEnd, System.Drawing.Color.Transparent, System.Drawing.Color.Transparent)
{
InterpolationColors = CalculateColorBlend(renderer, opacity, specifiedStart, effectiveStart, specifiedEnd, effectiveEnd),
WrapMode = WrapMode.TileFlipX
});
}
finally
{
if (this.GradientUnits == SvgCoordinateUnits.ObjectBoundingBox)
{
renderer.PopBoundable();
}
}
}
/// <summary>
/// Draws a string on a path at a specified location and with a specified font.
/// </summary>
internal void DrawString(SvgRenderer renderer, GraphicsPath path, float x, float y, Font font, string text)
{
PointF location = new PointF(x, y);
// No way to do letter-spacing or word-spacing, so do manually
if (this.LetterSpacing.Value > 0.0f || this.WordSpacing.Value > 0.0f)
{
// Cut up into words, or just leave as required
string[] words = (this.WordSpacing.Value > 0.0f) ? text.Split(' ') : new string[] { text };
float wordSpacing = this.WordSpacing.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
float letterSpacing = this.LetterSpacing.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
float start = x;
foreach (string word in words)
{
// Only do if there is line spacing, just write the word otherwise
if (this.LetterSpacing.Value > 0.0f)
{
char[] characters = word.ToCharArray();
foreach (char currentCharacter in characters)
{
path.AddString(currentCharacter.ToString(), font.FontFamily, (int)font.Style, font.Size, location, StringFormat.GenericTypographic);
location = new PointF(path.GetBounds().Width + start + letterSpacing, location.Y);
}
}
else
{
path.AddString(word, font.FontFamily, (int)font.Style, font.Size, location, StringFormat.GenericTypographic);
}
// Move the location of the word to be written along
location = new PointF(path.GetBounds().Width + start + wordSpacing, location.Y);
}
}
else
{
if (!string.IsNullOrEmpty(text))
{
path.AddString(text, font.FontFamily, (int)font.Style, font.Size, location, StringFormat.GenericTypographic);
}
}
}
/// <summary>
/// Gets the <see cref="GraphicsPath"/> for this element.
/// </summary>
/// <value></value>
public override GraphicsPath Path(ISvgRenderer renderer)
{
//if there is a TSpan inside of this text element then path should not be null (even if this text is empty!)
var nodes = GetContentNodes().Where(x => x is SvgContentNode &&
string.IsNullOrEmpty(x.Content.Trim(new[] { '\r', '\n', '\t' })));
if (_path == null || IsPathDirty || nodes.Count() == 1)
{
if (renderer != null && renderer is IGraphicsProvider)
{
SetPath(new TextDrawingState(renderer, this));
}
else
{
using (var r = SvgRenderer.FromNull())
SetPath(new TextDrawingState(r, this));
}
}
return(_path);
}
private ColorBlend CalculateColorBlend(SvgRenderer renderer, float opacity, PointF specifiedStart, PointF effectiveStart, PointF specifiedEnd, PointF effectiveEnd)
{
var colorBlend = GetColorBlend(renderer, opacity, false);
var startDelta = CalculateDistance(specifiedStart, effectiveStart);
var endDelta = CalculateDistance(specifiedEnd, effectiveEnd);
if (!(startDelta > 0) && !(endDelta > 0))
{
return(colorBlend);
}
var specifiedLength = CalculateDistance(specifiedStart, specifiedEnd);
var specifiedUnitVector = new PointF((specifiedEnd.X - specifiedStart.X) / (float)specifiedLength, (specifiedEnd.Y - specifiedStart.Y) / (float)specifiedLength);
var effectiveLength = CalculateDistance(effectiveStart, effectiveEnd);
for (var i = 0; i < colorBlend.Positions.Length; i++)
{
var originalPoint = MovePointAlongVector(specifiedStart, specifiedUnitVector, (float)specifiedLength * colorBlend.Positions[i]);
var distanceFromEffectiveStart = CalculateDistance(effectiveStart, originalPoint);
colorBlend.Positions[i] = (float)Math.Round(Math.Max(0F, Math.Min((distanceFromEffectiveStart / effectiveLength), 1.0F)), 5);
}
if (startDelta > 0)
{
colorBlend.Positions = new[] { 0F }.Concat(colorBlend.Positions).ToArray();
colorBlend.Colors = new[] { colorBlend.Colors.First() }.Concat(colorBlend.Colors).ToArray();
}
if (endDelta > 0)
{
colorBlend.Positions = colorBlend.Positions.Concat(new[] { 1F }).ToArray();
colorBlend.Colors = colorBlend.Colors.Concat(new[] { colorBlend.Colors.Last() }).ToArray();
}
return(colorBlend);
}
/// <summary>
/// Renders the stroke of the <see cref="SvgVisualElement"/> to the specified <see cref="SvgRenderer"/>
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected internal override void RenderStroke(SvgRenderer renderer)
{
if (this.Stroke != null)
{
float strokeWidth = this.StrokeWidth.ToDeviceValue(renderer, UnitRenderingType.Other, this);
using (Pen pen = new Pen(this.Stroke.GetBrush(this, renderer, this.StrokeOpacity), strokeWidth))
{
if (this.StrokeDashArray != null && this.StrokeDashArray.Count > 0)
{
/* divide by stroke width - GDI behaviour that I don't quite understand yet.*/
pen.DashPattern = this.StrokeDashArray.ConvertAll(u => u.Value / ((strokeWidth <= 0) ? 1 : strokeWidth)).ToArray();
}
var path = this.Path(renderer);
renderer.DrawPath(pen, path);
if (this.MarkerStart != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerStart.ToString());
marker.RenderMarker(renderer, this, path.PathPoints[0], path.PathPoints[0], path.PathPoints[1]);
}
if (this.MarkerMid != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerMid.ToString());
for (int i = 1; i <= path.PathPoints.Length - 2; i++)
{
marker.RenderMarker(renderer, this, path.PathPoints[i], path.PathPoints[i - 1], path.PathPoints[i], path.PathPoints[i + 1]);
}
}
if (this.MarkerEnd != null)
{
SvgMarker marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerEnd.ToString());
marker.RenderMarker(renderer, this, path.PathPoints[path.PathPoints.Length - 1], path.PathPoints[path.PathPoints.Length - 2], path.PathPoints[path.PathPoints.Length - 1]);
}
}
}
}
/// <summary>
/// Renders the stroke of the <see cref="SvgVisualElement"/> to the specified <see cref="SvgRenderer"/>
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected internal override void RenderStroke(SvgRenderer renderer)
{
if (this.Stroke != null)
{
float strokeWidth = this.StrokeWidth.ToDeviceValue(this);
using (var pen = new Pen(this.Stroke.GetBrush(this, this.StrokeOpacity), strokeWidth))
{
if (this.StrokeDashArray != null && this.StrokeDashArray.Count > 0)
{
/* divide by stroke width - GDI behaviour that I don't quite understand yet.*/
pen.DashPattern = this.StrokeDashArray.ConvertAll(u => u.Value / ((strokeWidth <= 0) ? 1 : strokeWidth)).ToArray();
}
//hardcoded transformation matrix. I am not sure why this is not in proportion or rotated correctly (something to do with how the endcaps are determined in GDI)
var transMatrix = new Matrix();
transMatrix.Rotate(-90f);
transMatrix.Scale(.6f, .6f);
if (this.MarkerStart != null)
{
var marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerStart.ToString());
var markerPath = marker.Path.Clone() as GraphicsPath;
markerPath.Transform(transMatrix);
pen.CustomStartCap = new CustomLineCap(markerPath, null);
}
if (this.MarkerEnd != null)
{
var marker = this.OwnerDocument.GetElementById <SvgMarker>(this.MarkerEnd.ToString());
var markerPath = marker.Path.Clone() as GraphicsPath;
markerPath.Transform(transMatrix);
pen.CustomEndCap = new CustomLineCap(markerPath, null);
}
renderer.DrawPath(pen, this.Path);
}
}
}
public void SaveJPEG(String filepath, Int32 DPI = 300)
{
Int32 oldDPI = Ppi;
Ppi = DPI;
// Int32 m_rate = Convert.ToInt32(DPI.GetRatio(Ppi));
Int32 w = Convert.ToInt32(Width.ToDeviceValue());
Int32 h = Convert.ToInt32(Height.ToDeviceValue());
Bitmap bitmap = new Bitmap(w, h);
SvgRenderer renderer = SvgRenderer.FromImage(bitmap);
// ImageFormatConverter.StandardValuesCollection;
// ImageConverter imageConverter = new ImageConverter.StandardValuesCollection;
Render(renderer);
bitmap.Save(filepath, ImageFormat.Jpeg);
Ppi = oldDPI;
}
public override Brush GetBrush(SvgVisualElement renderingElement, SvgRenderer renderer, float opacity)
{
GraphicsPath path = new GraphicsPath();
float left = this.CenterX.ToDeviceValue(renderingElement);
float top = this.CenterY.ToDeviceValue(renderingElement, true);
float radius = this.Radius.ToDeviceValue(renderingElement);
RectangleF boundingBox = (this.GradientUnits == SvgCoordinateUnits.ObjectBoundingBox) ? renderingElement.Bounds : renderingElement.OwnerDocument.GetDimensions();
if (radius > 0)
{
path.AddEllipse(left - radius, top - radius, radius * 2, radius * 2);
PathGradientBrush brush = new PathGradientBrush(path);
ColorBlend blend = base.GetColourBlend(renderingElement, opacity);
brush.InterpolationColors = blend;
brush.CenterPoint = new PointF(this.FocalX.ToDeviceValue(renderingElement), this.FocalY.ToDeviceValue(renderingElement, true));
return(brush);
}
return(null);
}
/// <summary>
/// Renders the <see cref="SvgDocument"/> into a given Bitmap <see cref="Bitmap"/>.
/// </summary>
public virtual void Draw(Bitmap bitmap)
{
//Trace.TraceInformation("Begin Render");
try
{
using (var renderer = SvgRenderer.FromImage(bitmap))
{
renderer.Boundable(new GenericBoundable(0, 0, bitmap.Width, bitmap.Height));
renderer.TextRenderingHint = TextRenderingHint.AntiAlias;
renderer.TextContrast = 1;
renderer.PixelOffsetMode = PixelOffsetMode.Half;
this.Render(renderer);
renderer.Save();
}
}
catch
{
throw;
}
//Trace.TraceInformation("End Render");
}
/// <summary>
/// Recursive method to add up the paths of all children
/// </summary>
/// <param name="elem"></param>
/// <param name="path"></param>
protected GraphicsPath GetPaths(SvgElement elem, SvgRenderer renderer)
{
var ret = new GraphicsPath();
foreach (var child in elem.Children)
{
if (child is SvgVisualElement)
{
if (!(child is SvgGroup))
{
var childPath = ((SvgVisualElement)child).Path(renderer);
if (childPath != null)
{
childPath = (GraphicsPath)childPath.Clone();
if (child.Transforms != null)
{
childPath.Transform(child.Transforms.GetMatrix());
}
ret.AddPath(childPath, false);
}
}
else
{
var childPath = GetPaths(child, renderer);
if (child.Transforms != null)
{
childPath.Transform(child.Transforms.GetMatrix());
}
}
}
}
return(ret);
}
/// <summary>
/// Renders the <see cref="SvgDocument"/> into a given Bitmap <see cref="Bitmap"/>.
/// </summary>
public virtual void Draw(Bitmap bitmap, bool wireframe = false)
{
//Trace.TraceInformation("Begin Render");
try
{
using (var renderer = SvgRenderer.FromImage(bitmap))
{
renderer.Wireframe = wireframe;
renderer.SetBoundable(new GenericBoundable(0, 0, bitmap.Width, bitmap.Height));
//EO, 2014-12-05: Requested to ensure proper zooming out (reduce size). Otherwise it clip the image.
this.Overflow = SvgOverflow.Auto;
this.Render(renderer);
}
}
catch
{
throw;
}
//Trace.TraceInformation("End Render");
}
/// <summary>
/// Resets the clipping region of the specified <see cref="SvgRenderer"/> back to where it was before the <see cref="SetClip"/> method was called.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> to have its clipping region reset.</param>
void ISvgClipable.ResetClip(SvgRenderer renderer)
{
this.ResetClip(renderer);
}
/// <summary>
/// Resets the clipping region of the specified <see cref="SvgRenderer"/> back to where it was before the <see cref="SetClip"/> method was called.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> to have its clipping region reset.</param>
protected internal virtual void ResetClip(SvgRenderer renderer)
{
if (this._previousClip != null)
{
renderer.Clip = this._previousClip;
this._previousClip = null;
}
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
/// <param name="graphics">The <see cref="Graphics"/> object to render to.</param>
protected override void Render(SvgRenderer renderer)
{
if (this._radiusX.Value > 0.0f && this._radiusY.Value > 0.0f)
{
base.Render(renderer);
}
}
/// <summary>
/// Creates a new <see cref="SvgRenderer"/> from the specified <see cref="Graphics"/>.
/// </summary>
/// <param name="graphics">The <see cref="Graphics"/> to create the renderer from.</param>
public static SvgRenderer FromGraphics(Graphics graphics)
{
SvgRenderer renderer = new SvgRenderer();
renderer._innerGraphics = graphics;
return renderer;
}
/// <summary>
/// Renders the fill of the <see cref="SvgVisualElement"/> to the specified <see cref="SvgRenderer"/>
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected internal virtual void RenderFill(SvgRenderer renderer)
{
if (this.Fill != null)
{
using (Brush brush = this.Fill.GetBrush(this, this.FillOpacity))
{
if (brush != null)
{
renderer.FillPath(brush, this.Path);
}
}
}
}
static private int MeasureString(SvgRenderer renderer, string text, Font font)
{
GraphicsPath p = new GraphicsPath();
p.AddString(text, font.FontFamily, 0, font.Size, new PointF(0.0f, 0.0f), StringFormat.GenericTypographic);
p.Transform(renderer.Transform);
return (int)(p.GetBounds().Width + 1.0f);
}
/// <summary>
/// Renders the circle to the specified <see cref="Graphics"/> object.
/// </summary>
/// <param name="graphics">The graphics object.</param>
protected override void Render(SvgRenderer renderer)
{
// Don't draw if there is no radius set
if (this.Radius.Value > 0.0f)
{
base.Render(renderer);
}
}
/// <summary>
/// Sets the clipping region of the specified <see cref="SvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> to have its clipping region set.</param>
protected internal virtual void SetClip(SvgRenderer renderer)
{
if (this.ClipPath != null)
{
SvgClipPath clipPath = this.OwnerDocument.GetElementById<SvgClipPath>(this.ClipPath.ToString());
this._previousClip = renderer.Clip;
if (clipPath != null)
{
renderer.Clip = clipPath.GetClipRegion(this);
}
}
}
/// <summary>
/// Converts the current unit to one that can be used at render time.
/// </summary>
/// <param name="boundable">The container element used as the basis for calculations</param>
/// <returns>The representation of the current unit in a device value (usually pixels).</returns>
public float ToDeviceValue(SvgRenderer renderer, UnitRenderingType renderType, SvgElement owner)
{
// If it's already been calculated
if (this._deviceValue.HasValue)
{
return this._deviceValue.Value;
}
if (this._value == 0.0f)
{
this._deviceValue = 0.0f;
return this._deviceValue.Value;
}
// http://www.w3.org/TR/CSS21/syndata.html#values
// http://www.w3.org/TR/SVG11/coords.html#Units
const float cmInInch = 2.54f;
int ppi = SvgDocument.PointsPerInch;
var type = this.Type;
var value = this.Value;
// Deal with fractional pattern units
var coordElem = owner as ISvgSupportsCoordinateUnits;
if (coordElem != null && coordElem.GetUnits() == SvgCoordinateUnits.ObjectBoundingBox && type != SvgUnitType.Percentage)
{
type = SvgUnitType.Percentage;
value *= 100;
}
var element = owner as SvgElement;
if (element != null)
{
var pattern = element.Parents.OfType<SvgPatternServer>().FirstOrDefault();
if (pattern != null && pattern.PatternContentUnits == SvgCoordinateUnits.ObjectBoundingBox && type != SvgUnitType.Percentage)
{
type = SvgUnitType.Percentage;
value *= 100;
}
}
float points;
Font currFont;
switch (type)
{
case SvgUnitType.Em:
currFont = GetFont(renderer, owner);
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points / 72.0f) * ppi;
}
else
{
_deviceValue = value * (currFont.SizeInPoints / 72.0f) * ppi;
}
break;
case SvgUnitType.Ex:
currFont = GetFont(renderer, owner);
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points * 0.5f / 72.0f) * ppi;
}
else
{
_deviceValue = value * 0.5f * (currFont.SizeInPoints / 72.0f) * ppi;
}
break;
case SvgUnitType.Centimeter:
_deviceValue = (float)((value / cmInInch) * ppi);
break;
case SvgUnitType.Inch:
_deviceValue = value * ppi;
break;
case SvgUnitType.Millimeter:
_deviceValue = (float)((value / 10) / cmInInch) * ppi;
break;
case SvgUnitType.Pica:
_deviceValue = ((value * 12) / 72) * ppi;
break;
case SvgUnitType.Point:
_deviceValue = (value / 72) * ppi;
break;
case SvgUnitType.Pixel:
_deviceValue = value;
break;
case SvgUnitType.User:
_deviceValue = value;
break;
case SvgUnitType.Percentage:
// Can't calculate if there is no style owner
var boundable = (renderer == null ? (owner == null ? null : owner.OwnerDocument) : renderer.Boundable());
if (boundable == null)
{
_deviceValue = value;
break;
}
System.Drawing.SizeF size = boundable.Bounds.Size;
switch (renderType)
{
case UnitRenderingType.Horizontal:
_deviceValue = (size.Width / 100) * value;
break;
case UnitRenderingType.HorizontalOffset:
_deviceValue = (size.Width / 100) * value + boundable.Location.X;
break;
case UnitRenderingType.Vertical:
_deviceValue = (size.Height / 100) * value;
break;
case UnitRenderingType.VerticalOffset:
_deviceValue = (size.Height / 100) * value + boundable.Location.Y;
break;
default:
_deviceValue = (float)(Math.Sqrt(Math.Pow(size.Width, 2) + Math.Pow(size.Height, 2)) / Math.Sqrt(2) * value / 100.0);
break;
}
break;
default:
_deviceValue = value;
break;
}
return this._deviceValue.Value;
}
public static System.Drawing.SizeF GetDeviceSize(SvgUnit width, SvgUnit height, SvgRenderer renderer, SvgElement owner)
{
return new System.Drawing.SizeF(width.ToDeviceValue(renderer, UnitRenderingType.HorizontalOffset, owner),
height.ToDeviceValue(renderer, UnitRenderingType.VerticalOffset, owner));
}
/// <summary>
/// Renders the stroke of the <see cref="SvgVisualElement"/> to the specified <see cref="SvgRenderer"/>
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> object to render to.</param>
protected internal virtual void RenderStroke(SvgRenderer renderer)
{
if (this.Stroke != null)
{
float strokeWidth = this.StrokeWidth.ToDeviceValue(this);
using (var pen = new Pen(this.Stroke.GetBrush(this, this.StrokeOpacity), strokeWidth))
{
if (this.StrokeDashArray != null && this.StrokeDashArray.Count > 0)
{
/* divide by stroke width - GDI behaviour that I don't quite understand yet.*/
pen.DashPattern = this.StrokeDashArray.ConvertAll(u => u.Value/((strokeWidth <= 0) ? 1 : strokeWidth)).ToArray();
}
renderer.DrawPath(pen, this.Path);
}
}
}
private Font GetFont(SvgRenderer renderer, SvgElement owner)
{
if (owner == null) return null;
var visual = owner.ParentsAndSelf.OfType<SvgVisualElement>().FirstOrDefault();
return visual.GetFont(renderer);
}
/// <summary>
/// Get the font information based on data stored with the text object or inherited from the parent.
/// </summary>
/// <returns></returns>
internal System.Drawing.Font GetFont(SvgRenderer renderer)
{
// Get the font-size
float fontSize;
var fontSizeUnit = this.FontSize;
if (fontSizeUnit == SvgUnit.None)
{
fontSize = 1.0f;
}
else
{
fontSize = fontSizeUnit.ToDeviceValue(renderer, UnitRenderingType.Vertical, this);
}
var fontStyle = System.Drawing.FontStyle.Regular;
// Get the font-weight
switch (this.FontWeight)
{
case SvgFontWeight.bold:
case SvgFontWeight.bolder:
case SvgFontWeight.w600:
case SvgFontWeight.w700:
case SvgFontWeight.w800:
case SvgFontWeight.w900:
fontStyle |= System.Drawing.FontStyle.Bold;
break;
}
// Get the font-style
switch (this.FontStyle)
{
case SvgFontStyle.italic:
case SvgFontStyle.oblique:
fontStyle |= System.Drawing.FontStyle.Italic;
break;
}
// Get the text-decoration
switch (this.TextDecoration)
{
case SvgTextDecoration.lineThrough:
fontStyle |= System.Drawing.FontStyle.Strikeout;
break;
case SvgTextDecoration.underline:
fontStyle |= System.Drawing.FontStyle.Underline;
break;
}
// Get the font-family
string family = ValidateFontFamily(this.FontFamily) ?? DefaultFontFamily;
return new System.Drawing.Font(family, fontSize, fontStyle, System.Drawing.GraphicsUnit.Pixel);
}
