VgVisualDoc ReadSvgFile(string filename)
{
string svgContent = System.IO.File.ReadAllText(filename);
VgDocBuilder docBuidler = new VgDocBuilder();
SvgParser parser = new SvgParser(docBuidler);
WebLexer.TextSnapshot textSnapshot = new WebLexer.TextSnapshot(svgContent);
parser.ParseDocument(textSnapshot);
//TODO: review this step again
VgVisualDocBuilder builder = new VgVisualDocBuilder();
return(builder.CreateVgVisualDoc(docBuidler.ResultDocument, _vgVisualDocHost));
}
MemBitmap ParseAndRenderSvg(System.Text.StringBuilder svgContent)
{
//----------
//copy from HtmlRenderer's SvgViewer demo
//----------
var docBuilder = new VgDocBuilder();
var parser = new SvgParser(docBuilder);
TextSnapshot textSnapshot = new TextSnapshot(svgContent.ToString());
parser.ParseDocument(textSnapshot);
VgVisualDocBuilder builder = new VgVisualDocBuilder();
VgVisualElement vgVisElem = builder.CreateVgVisualDoc(docBuilder.ResultDocument, _vgDocHost).VgRootElem;
PixelFarm.CpuBlit.VertexProcessing.Q1RectD bounds = vgVisElem.GetRectBounds();
float actualXOffset = (float)-bounds.Left;
float actualYOffset = (float)-bounds.Bottom;
int bmpW = (int)Math.Round(bounds.Width);
int bmpH = (int)Math.Round(bounds.Height);
if (bmpW == 0 || bmpH == 0)
{
return(null);
}
MemBitmap memBitmap = new MemBitmap(bmpW, bmpH);
using (Tools.BorrowAggPainter(memBitmap, out var p))
using (Tools.More.BorrowVgPaintArgs(p, out var paintArgs))
{
float orgX = p.OriginX;
float orgY = p.OriginY;
p.SetOrigin(actualXOffset, actualYOffset);
p.Clear(PixelFarm.Drawing.Color.White);
p.FillColor = PixelFarm.Drawing.Color.Black;
double prevStrokeW = p.StrokeWidth;
vgVisElem.Paint(paintArgs);
p.StrokeWidth = prevStrokeW; //restore
p.SetOrigin(orgX, orgY); //restore
}
return(memBitmap);
}
void ParseAndRenderSvgFile(string svgFile)
{
var docBuilder = new VgDocBuilder();
var svgParser = new SvgParser(docBuilder);
//TODO: ask file content from host,
string svgContent = System.IO.File.ReadAllText(svgFile);
WebLexer.TextSnapshot textSnapshot = new WebLexer.TextSnapshot(svgContent);
svgParser.ParseDocument(textSnapshot);
//
#if DEBUG
System.Diagnostics.Debug.WriteLine(svgFile);
#endif
var vgDocBuilder = new VgVisualDocBuilder();
VgVisualElement vgVisElem = vgDocBuilder.CreateVgVisualDoc(docBuilder.ResultDocument, _vgDocHost).VgRootElem;
var uiSprite = new UISprite(10, 10);
var evListener = new GeneralEventListener();
uiSprite.AttachExternalEventListener(evListener);
evListener.MouseDown += (s, e) =>
{
//hit on svg color- area
VgHitInfo hitInfo = uiSprite.FindRenderElementAtPos(e.X, e.Y, false);
#if DEBUG
if (hitInfo.hitElem != null)
{
SvgElement domElem = hitInfo.hitElem.DomElem;
if (domElem != null && domElem.ElemId != null)
{
Console.WriteLine(domElem.ElemId);
}
}
#endif
};
uiSprite.LoadVg(vgVisElem);
_backBoard.ClearChildren();
_backBoard.Add(uiSprite);
}
public static VgVisualElement CreateVgVisualElemFromSvgContent(string svgContent)
{
VgDocBuilder docBuidler = new VgDocBuilder();
SvgParser parser = new SvgParser(docBuidler);
WebLexer.TextSnapshot textSnapshot = new WebLexer.TextSnapshot(svgContent);
parser.ParseDocument(textSnapshot);//start document parsing
//TODO: review this step again
VgVisualDocBuilder builder = new VgVisualDocBuilder();
VgDocument svgDoc = docBuidler.ResultDocument;
//optional
svgDoc.OriginalContent = svgContent;
//-------------------------------------------------------------
VgVisualElement vgVisRootElem = builder.CreateVgVisualDoc(svgDoc, null).VgRootElem;
//
vgVisRootElem.OwnerDocument = svgDoc;//tmp
return(vgVisRootElem);
}
public static void ParseAndRenderSvg(PixelFarm.Drawing.SvgBmpBuilderReq req)
{
//----------
//copy from HtmlRenderer's SvgViewer demo
//----------
var docBuilder = new VgDocBuilder();
var parser = new SvgParser(docBuilder);
TextSnapshot textSnapshot = new TextSnapshot(req.SvgContent.ToString());
parser.ParseDocument(textSnapshot);
VgVisualDocBuilder builder = new VgVisualDocBuilder();
VgVisualElement vgVisElem = builder.CreateVgVisualDoc(docBuilder.ResultDocument, _vgDocHost).VgRootElem;
PixelFarm.CpuBlit.VertexProcessing.Q1RectD bounds = vgVisElem.GetRectBounds();
float actualXOffset = (float)-bounds.Left;
float actualYOffset = (float)-bounds.Bottom;
//original svg width, height
int bmpW = (int)Math.Round(bounds.Width);
int bmpH = (int)Math.Round(bounds.Height);
if (bmpW == 0 || bmpH == 0)
{
return;
}
//scale svg to specific size
float scale_w = req.ExpectedWidth / bmpW;
//at this point, we have 2 options
//1) create bitmap with original svg size and scale it down to expected size
//2) scale svg to expected size and create a bitmap
//we choose 2)
int new_w = (int)Math.Round(bmpW * scale_w);
int new_h = (int)Math.Round(bmpH * scale_w);
MemBitmap memBitmap = new MemBitmap(new_w, new_h);
using (Tools.BorrowAggPainter(memBitmap, out var p))
using (Tools.More.BorrowVgPaintArgs(p, out VgPaintArgs paintArgs))
{
//pass by
Affine tx = Affine.NewScaling(scale_w);
paintArgs._currentTx = tx;
float orgX = p.OriginX;
float orgY = p.OriginY;
p.SetOrigin(actualXOffset * scale_w, actualYOffset * scale_w);
p.Clear(req.DefaultBgColor);
p.FillColor = PixelFarm.Drawing.Color.Black;
double prevStrokeW = p.StrokeWidth;
vgVisElem.Paint(paintArgs);
p.StrokeWidth = prevStrokeW; //restore
p.SetOrigin(orgX, orgY); //restore
}
#if DEBUG
//memBitmap.SaveImage("svg.png");
#endif
req.Output = memBitmap;
}
