protected override void Render(ISvgRenderer renderer)
{
switch (this.Overflow)
{
case SvgOverflow.Auto:
case SvgOverflow.Visible:
case SvgOverflow.Inherit:
base.Render(renderer);
break;
default:
var prevClip = renderer.GetClip();
try
{
var size = (this.Parent == null ? renderer.GetBoundable().Bounds.Size : GetDimensions());
var clip = new RectangleF(this.X.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
this.Y.ToDeviceValue(renderer, UnitRenderingType.Vertical, this),
size.Width, size.Height);
renderer.SetClip(new Region(clip), CombineMode.Intersect);
base.Render(renderer);
}
finally
{
renderer.SetClip(prevClip, CombineMode.Replace);
}
break;
}
}
/// <summary>
/// Sets the clipping region of the specified <see cref="ISvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="ISvgRenderer"/> to have its clipping region set.</param>
protected internal virtual void SetClip(ISvgRenderer renderer)
{
if (this.ClipPath != null || !string.IsNullOrEmpty(this.Clip))
{
this._previousClip = renderer.GetClip();
if (this.ClipPath != null)
{
SvgClipPath clipPath = this.OwnerDocument.GetElementById <SvgClipPath>(this.ClipPath.ToString());
if (clipPath != null)
{
renderer.SetClip(clipPath.GetClipRegion(this, renderer), CombineMode.Intersect);
}
}
var clip = this.Clip;
if (!string.IsNullOrEmpty(clip) && clip.StartsWith("rect("))
{
clip = clip.Trim();
var offsets = (from o in clip.Substring(5, clip.Length - 6).Split(',')
select float.Parse(o.Trim(), NumberStyles.Any, CultureInfo.InvariantCulture)).ToList();
var bounds = this.Bounds;
var clipRect = new RectangleF(bounds.Left + offsets[3], bounds.Top + offsets[0],
bounds.Width - (offsets[3] + offsets[1]),
bounds.Height - (offsets[2] + offsets[0]));
renderer.SetClip(new Region(clipRect), CombineMode.Intersect);
}
}
}
public void ApplyFilter(SvgVisualElement element, ISvgRenderer renderer, Action <ISvgRenderer> renderMethod)
{
var inflate = 0.5f;
var transform = GetTransform(element);
var bounds = GetPathBounds(element, renderer, transform);
if (bounds.Width == 0 || bounds.Height == 0)
{
return;
}
var buffer = new ImageBuffer(bounds, inflate, renderer, renderMethod)
{
Transform = transform
};
foreach (var primitive in this.Children.OfType <SvgFilterPrimitive>())
{
primitive.Process(buffer);
}
// Render the final filtered image
var bufferImg = buffer.Buffer;
var imgDraw = RectangleF.Inflate(bounds, inflate * bounds.Width, inflate * bounds.Height);
var prevClip = renderer.GetClip();
renderer.SetClip(new Region(imgDraw));
renderer.DrawImage(bufferImg, imgDraw, new RectangleF(bounds.X, bounds.Y, imgDraw.Width, imgDraw.Height), GraphicsUnit.Pixel);
renderer.SetClip(prevClip);
}
/// <summary>
/// Removes any previously applied transforms from the specified <see cref="ISvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="ISvgRenderer"/> that should have transforms removed.</param>
protected internal virtual void PopTransforms(ISvgRenderer renderer)
{
renderer.Transform = _graphicsMatrix;
_graphicsMatrix = null;
renderer.SetClip(_graphicsClip);
_graphicsClip = null;
}
/// <summary>
/// Resets the clipping region of the specified <see cref="ISvgRenderer"/> back to where it was before the <see cref="SetClip"/> method was called.
/// </summary>
/// <param name="renderer">The <see cref="ISvgRenderer"/> to have its clipping region reset.</param>
protected internal virtual void ResetClip(ISvgRenderer renderer)
{
if (this._previousClip != null)
{
renderer.SetClip(this._previousClip);
this._previousClip = null;
}
}
/// <summary>
/// Removes any previously applied transforms from the specified <see cref="ISvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="ISvgRenderer"/> that should have transforms removed.</param>
protected internal virtual void PopTransforms(ISvgRenderer renderer)
{
renderer.Transform = _graphicsTransform;
_graphicsTransform.Dispose();
_graphicsTransform = null;
renderer.SetClip(_graphicsClip);
_graphicsClip = null;
}
public void AddViewBoxTransform(SvgAspectRatio aspectRatio, ISvgRenderer renderer, SvgFragment frag)
{
var x = (frag == null ? 0 : frag.X.ToDeviceValue(renderer, UnitRenderingType.Horizontal, frag));
var y = (frag == null ? 0 : frag.Y.ToDeviceValue(renderer, UnitRenderingType.Vertical, frag));
if (this.Equals(SvgViewBox.Empty))
{
renderer.TranslateTransform(x, y, MatrixOrder.Prepend);
return;
}
var width = (frag == null ? this.Width : frag.Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, frag));
var height = (frag == null ? this.Height : frag.Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, frag));
var fScaleX = width / this.Width;
var fScaleY = height / this.Height; //(this.MinY < 0 ? -1 : 1) *
var fMinX = -this.MinX * fScaleX;
var fMinY = -this.MinY * fScaleY;
if (aspectRatio == null)
{
aspectRatio = new SvgAspectRatio(SvgPreserveAspectRatio.xMidYMid, false);
}
if (aspectRatio.Align != SvgPreserveAspectRatio.none)
{
if (aspectRatio.Slice)
{
fScaleX = Math.Max(fScaleX, fScaleY);
fScaleY = Math.Max(fScaleX, fScaleY);
}
else
{
fScaleX = Math.Min(fScaleX, fScaleY);
fScaleY = Math.Min(fScaleX, fScaleY);
}
float fViewMidX = (this.Width / 2) * fScaleX;
float fViewMidY = (this.Height / 2) * fScaleY;
float fMidX = width / 2;
float fMidY = height / 2;
fMinX = -this.MinX * fScaleX;
fMinY = -this.MinY * fScaleY;
switch (aspectRatio.Align)
{
case SvgPreserveAspectRatio.xMinYMin:
break;
case SvgPreserveAspectRatio.xMidYMin:
fMinX += fMidX - fViewMidX;
break;
case SvgPreserveAspectRatio.xMaxYMin:
fMinX += width - this.Width * fScaleX;
break;
case SvgPreserveAspectRatio.xMinYMid:
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMidYMid:
fMinX += fMidX - fViewMidX;
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMaxYMid:
fMinX += width - this.Width * fScaleX;
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMinYMax:
fMinY += height - this.Height * fScaleY;
break;
case SvgPreserveAspectRatio.xMidYMax:
fMinX += fMidX - fViewMidX;
fMinY += height - this.Height * fScaleY;
break;
case SvgPreserveAspectRatio.xMaxYMax:
fMinX += width - this.Width * fScaleX;
fMinY += height - this.Height * fScaleY;
break;
default:
break;
}
}
renderer.SetClip(new Region(new RectangleF(x, y, width, height)), CombineMode.Intersect);
renderer.TranslateTransform(x, y, MatrixOrder.Prepend);
renderer.TranslateTransform(fMinX, fMinY, MatrixOrder.Prepend);
renderer.ScaleTransform(fScaleX, fScaleY, MatrixOrder.Prepend);
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
protected override void Render(ISvgRenderer renderer)
{
if (!Visible || !Displayable)
{
return;
}
if (Width.Value > 0.0f && Height.Value > 0.0f && this.Href != null)
{
var img = GetImage();
if (img != null)
{
RectangleF srcRect;
var bmp = img as Bitmap;
var svg = img as SvgFragment;
if (bmp != null)
{
srcRect = new RectangleF(0, 0, bmp.Width, bmp.Height);
}
else if (svg != null)
{
srcRect = new RectangleF(new PointF(0, 0), svg.GetDimensions());
}
else
{
return;
}
var destClip = new RectangleF(this.Location.ToDeviceValue(renderer, this),
new SizeF(Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, this)));
RectangleF destRect = destClip;
this.PushTransforms(renderer);
renderer.SetClip(new Region(destClip), CombineMode.Intersect);
this.SetClip(renderer);
if (AspectRatio != null && AspectRatio.Align != SvgPreserveAspectRatio.none)
{
var fScaleX = destClip.Width / srcRect.Width;
var fScaleY = destClip.Height / srcRect.Height;
var xOffset = 0.0f;
var yOffset = 0.0f;
if (AspectRatio.Slice)
{
fScaleX = Math.Max(fScaleX, fScaleY);
fScaleY = Math.Max(fScaleX, fScaleY);
}
else
{
fScaleX = Math.Min(fScaleX, fScaleY);
fScaleY = Math.Min(fScaleX, fScaleY);
}
switch (AspectRatio.Align)
{
case SvgPreserveAspectRatio.xMinYMin:
break;
case SvgPreserveAspectRatio.xMidYMin:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
break;
case SvgPreserveAspectRatio.xMaxYMin:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
break;
case SvgPreserveAspectRatio.xMinYMid:
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMidYMid:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMaxYMid:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMinYMax:
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatio.xMidYMax:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatio.xMaxYMax:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
}
destRect = new RectangleF(destClip.X + xOffset, destClip.Y + yOffset,
srcRect.Width * fScaleX, srcRect.Height * fScaleY);
}
if (bmp != null)
{
renderer.DrawImage(bmp, destRect, srcRect, GraphicsUnit.Pixel);
bmp.Dispose();
}
else if (svg != null)
{
var currOffset = new PointF(renderer.Transform.OffsetX, renderer.Transform.OffsetY);
renderer.TranslateTransform(-currOffset.X, -currOffset.Y);
renderer.ScaleTransform(destRect.Width / srcRect.Width, destRect.Height / srcRect.Height);
renderer.TranslateTransform(currOffset.X + destRect.X, currOffset.Y + destRect.Y);
renderer.SetBoundable(new GenericBoundable(srcRect));
svg.RenderElement(renderer);
renderer.PopBoundable();
}
this.ResetClip(renderer);
this.PopTransforms(renderer);
}
// TODO: cache images... will need a shared context for this
// TODO: support preserveAspectRatio, etc
}
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
protected override void Render(ISvgRenderer renderer)
{
if (!(Visible && Displayable && Width.Value > 0f && Height.Value > 0f && Href != null))
{
return;
}
var img = GetImage(Href);
var bmp = img as Image;
var svg = img as SvgFragment;
if (bmp == null && svg == null)
{
return;
}
try
{
if (PushTransforms(renderer))
{
RectangleF srcRect;
if (bmp != null)
{
srcRect = new RectangleF(0f, 0f, bmp.Width, bmp.Height);
}
else
{
srcRect = new RectangleF(new PointF(0f, 0f), svg.GetDimensions());
}
var destClip = new RectangleF(Location.ToDeviceValue(renderer, this),
new SizeF(Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, this)));
var destRect = destClip;
renderer.SetClip(new Region(destClip), CombineMode.Intersect);
SetClip(renderer);
var aspectRatio = AspectRatio;
if (aspectRatio.Align != SvgPreserveAspectRatio.none)
{
var fScaleX = destClip.Width / srcRect.Width;
var fScaleY = destClip.Height / srcRect.Height;
var xOffset = 0f;
var yOffset = 0f;
if (aspectRatio.Slice)
{
fScaleX = Math.Max(fScaleX, fScaleY);
fScaleY = Math.Max(fScaleX, fScaleY);
}
else
{
fScaleX = Math.Min(fScaleX, fScaleY);
fScaleY = Math.Min(fScaleX, fScaleY);
}
switch (aspectRatio.Align)
{
case SvgPreserveAspectRatio.xMinYMin:
break;
case SvgPreserveAspectRatio.xMidYMin:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
break;
case SvgPreserveAspectRatio.xMaxYMin:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
break;
case SvgPreserveAspectRatio.xMinYMid:
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMidYMid:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMaxYMid:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMinYMax:
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatio.xMidYMax:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatio.xMaxYMax:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
}
destRect = new RectangleF(destClip.X + xOffset, destClip.Y + yOffset,
srcRect.Width * fScaleX, srcRect.Height * fScaleY);
}
if (bmp != null)
{
var opacity = FixOpacityValue(Opacity);
if (opacity == 1f)
{
renderer.DrawImage(bmp, destRect, srcRect, GraphicsUnit.Pixel);
}
else
{
renderer.DrawImage(bmp, destRect, srcRect, GraphicsUnit.Pixel, opacity);
}
}
else
{
renderer.TranslateTransform(destRect.X, destRect.Y, MatrixOrder.Prepend);
renderer.ScaleTransform(destRect.Width / srcRect.Width, destRect.Height / srcRect.Height, MatrixOrder.Prepend);
try
{
renderer.SetBoundable(new GenericBoundable(srcRect));
svg.RenderElement(renderer);
}
finally
{
renderer.PopBoundable();
}
}
ResetClip(renderer);
}
}
finally
{
PopTransforms(renderer);
if (bmp != null)
{
bmp.Dispose();
}
}
// TODO: cache images... will need a shared context for this
}
protected override Brush CreateBrush(SvgVisualElement renderingElement, ISvgRenderer renderer, float opacity, bool forStroke)
{
// TODO: figure out how to do the brush transform in the presence of FocalRadius
try
{
if (this.GradientUnits == SvgCoordinateUnits.ObjectBoundingBox)
{
renderer.SetBoundable(renderingElement);
}
// Calculate the path and transform it appropriately
var center = new PointF(NormalizeUnit(CenterX).ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
NormalizeUnit(CenterY).ToDeviceValue(renderer, UnitRenderingType.Vertical, this));
var focals = new PointF[] { new PointF(NormalizeUnit(FocalX).ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
NormalizeUnit(FocalY).ToDeviceValue(renderer, UnitRenderingType.Vertical, this)) };
var specifiedRadius = NormalizeUnit(Radius).ToDeviceValue(renderer, UnitRenderingType.Other, this);
var path = new GraphicsPath();
path.AddEllipse(
center.X - specifiedRadius, center.Y - specifiedRadius,
specifiedRadius * 2, specifiedRadius * 2
);
using (var transform = EffectiveGradientTransform)
{
var bounds = renderer.GetBoundable().Bounds;
transform.Translate(bounds.X, bounds.Y, MatrixOrder.Prepend);
if (this.GradientUnits == SvgCoordinateUnits.ObjectBoundingBox)
{
transform.Scale(bounds.Width, bounds.Height, MatrixOrder.Prepend);
}
path.Transform(transform);
transform.TransformPoints(focals);
}
// Calculate any required scaling
var scaleBounds = RectangleF.Inflate(renderingElement.Bounds, renderingElement.StrokeWidth, renderingElement.StrokeWidth);
var scale = CalcScale(scaleBounds, path);
// Not ideal, but this makes sure that the rest of the shape gets properly filled or drawn
if (scale > 1.0f && SpreadMethod == SvgGradientSpreadMethod.Pad)
{
var stop = Stops.Last();
var origColor = stop.GetColor(renderingElement);
var renderColor = System.Drawing.Color.FromArgb((int)Math.Round(opacity * stop.StopOpacity * 255), origColor);
var origClip = renderer.GetClip();
try
{
using (var solidBrush = new SolidBrush(renderColor))
{
var newClip = origClip.Clone();
newClip.Exclude(path);
renderer.SetClip(newClip);
var renderPath = (GraphicsPath)renderingElement.Path(renderer);
if (forStroke)
{
using (var pen = new Pen(solidBrush, renderingElement.StrokeWidth.ToDeviceValue(renderer, UnitRenderingType.Other, renderingElement)))
{
renderer.DrawPath(pen, renderPath);
}
}
else
{
renderer.FillPath(solidBrush, renderPath);
}
}
}
finally
{
renderer.SetClip(origClip);
}
}
// Get the color blend and any tweak to the scaling
var blend = CalculateColorBlend(renderer, opacity, scale, out scale);
// Transform the path based on the scaling
var gradBounds = path.GetBounds();
var transCenter = new PointF(gradBounds.Left + gradBounds.Width / 2, gradBounds.Top + gradBounds.Height / 2);
using (var scaleMat = new Matrix())
{
scaleMat.Translate(-1 * transCenter.X, -1 * transCenter.Y, MatrixOrder.Append);
scaleMat.Scale(scale, scale, MatrixOrder.Append);
scaleMat.Translate(transCenter.X, transCenter.Y, MatrixOrder.Append);
path.Transform(scaleMat);
}
// calculate the brush
var brush = new PathGradientBrush(path);
brush.CenterPoint = focals[0];
brush.InterpolationColors = blend;
return(brush);
}
finally
{
if (this.GradientUnits == SvgCoordinateUnits.ObjectBoundingBox)
{
renderer.PopBoundable();
}
}
}
public void AddViewBoxTransform(SvgAspectRatio aspectRatio, ISvgRenderer renderer, SvgFragment frag)
{
var x = (frag == null ? 0 : frag.X.ToDeviceValue(renderer, UnitRenderingType.Horizontal, frag));
var y = (frag == null ? 0 : frag.Y.ToDeviceValue(renderer, UnitRenderingType.Vertical, frag));
if (this.Equals(SvgViewBox.Empty))
{
renderer.TranslateTransform(x, y);
return;
}
var width = (frag == null ? this.Width : frag.Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, frag));
var height = (frag == null ? this.Height : frag.Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, frag));
var fScaleX = width / this.Width;
var fScaleY = height / this.Height; //(this.MinY < 0 ? -1 : 1) *
var fMinX = -this.MinX * fScaleX;
var fMinY = -this.MinY * fScaleY;
if (aspectRatio == null) aspectRatio = new SvgAspectRatio(SvgPreserveAspectRatio.xMidYMid, false);
if (aspectRatio.Align != SvgPreserveAspectRatio.none)
{
if (aspectRatio.Slice)
{
fScaleX = Math.Max(fScaleX, fScaleY);
fScaleY = Math.Max(fScaleX, fScaleY);
}
else
{
fScaleX = Math.Min(fScaleX, fScaleY);
fScaleY = Math.Min(fScaleX, fScaleY);
}
float fViewMidX = (this.Width / 2) * fScaleX;
float fViewMidY = (this.Height / 2) * fScaleY;
float fMidX = width / 2;
float fMidY = height / 2;
fMinX = -this.MinX * fScaleX;
fMinY = -this.MinY * fScaleY;
switch (aspectRatio.Align)
{
case SvgPreserveAspectRatio.xMinYMin:
break;
case SvgPreserveAspectRatio.xMidYMin:
fMinX += fMidX - fViewMidX;
break;
case SvgPreserveAspectRatio.xMaxYMin:
fMinX += width - this.Width * fScaleX;
break;
case SvgPreserveAspectRatio.xMinYMid:
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMidYMid:
fMinX += fMidX - fViewMidX;
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMaxYMid:
fMinX += width - this.Width * fScaleX;
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMinYMax:
fMinY += height - this.Height * fScaleY;
break;
case SvgPreserveAspectRatio.xMidYMax:
fMinX += fMidX - fViewMidX;
fMinY += height - this.Height * fScaleY;
break;
case SvgPreserveAspectRatio.xMaxYMax:
fMinX += width - this.Width * fScaleX;
fMinY += height - this.Height * fScaleY;
break;
default:
break;
}
}
renderer.SetClip(new Region(new RectangleF(x, y, width, height)), CombineMode.Intersect);
renderer.ScaleTransform(fScaleX, fScaleY, MatrixOrder.Prepend);
renderer.TranslateTransform(x, y);
renderer.TranslateTransform(fMinX, fMinY);
}
public void SetClip(Region region, CombineMode combineMode = CombineMode.Replace)
{
_svgRendererImplementation.SetClip(region, combineMode);
}