private GraphicTextSymbolizer CreateGraphicTextSymbolizer(NodePropertyValue[] properties)
{
GraphicTextSymbolizer symText = new GraphicTextSymbolizer();
symText.Clip = true;
symText.TextLayout.Alignment = TextAlignment.CenterAligned;
ExternalGraphicSymbol gsImage = new ExternalGraphicSymbol();
symText.Graphic.GraphicSymbols.Add(gsImage);
GeometryTransformInfo geomTrans = new GeometryTransformInfo();
LabelPlacementInfo lpi = new LabelPlacementInfo();
lpi.Placement = "point";
lpi.Symbolizer = (int)SymbolizerType.Shield;
int blockIndex = -1;
TextLayoutBlock textBlock = new TextLayoutBlock();
string textTransform = null;
int nProps = properties.Length;
float text_dx = 0F, text_dy = 0F;
NodePropertyValue pv = null;
try
{
for (int i = 0; i < nProps; i++)
{
pv = properties[i];
switch (pv.Name)
{
case "shield-name":
if (pv.Value != null)
{
string textExpr = ToExpression(pv.Value);
if (!string.IsNullOrEmpty(textTransform))
textExpr = GetTextTransform(textExpr, textTransform);
textBlock.TextExpression = textExpr;
blockIndex++;
if (blockIndex > 0)
textBlock = new TextLayoutBlock();
symText.TextLayout.Blocks.Add(textBlock);
}
break;
case "shield-face-name":
SetFontName(textBlock, pv.Value);
break;
case "shield-file":
gsImage.Path = ToPath(pv.Value);
break;
case "shield-text-transform":
if (string.IsNullOrEmpty(textBlock.TextExpression))
textTransform = pv.Value;
else
textBlock.TextExpression = GetTextTransform(textBlock.TextExpression, pv.Value);
break;
case "shield-fill":
textBlock.TextFormat.TextStyle.Color = ColorUtility.FromHtml(pv.Value);
break;
case "shield-text-opacity":
textBlock.TextFormat.TextStyle.Opacity = Convert.ToSingle(pv.Value);
break;
case "shield-opacity":
gsImage.Opacity = Convert.ToSingle(pv.Value);
break;
case "shield-size":
textBlock.TextFormat.TextStyle.Font.Size = Convert.ToSingle(pv.Value);
break;
case "shield-halo-radius":
textBlock.TextFormat.TextStyle.Halo.Radius = Convert.ToSingle(pv.Value);
break;
case "shield-halo-fill":
Color clr = ColorUtility.FromHtml(pv.Value);
textBlock.TextFormat.TextStyle.Halo.Color = clr;
if (clr.A != 255)
textBlock.TextFormat.TextStyle.Halo.Opacity = clr.A / 255.0F;
break;
case "shield-halo-opacity":
textBlock.TextFormat.TextStyle.Halo.Opacity = Convert.ToSingle(pv.Value);
break;
case "shield-clip":
symText.Clip = Convert.ToBoolean(pv.Value);
break;
case "shield-horizontal-alignment":
// TODO
break;
case "shield-vertical-alignment":
// TODO
break;
case "shield-justify-alignment":
// TODO
break;
case "shield-transform":
//TODO
break;
case "shield-wrap-width":
textBlock.TextFormat.TextWrapping.MaxWidth = Convert.ToUInt32(pv.Value);
textBlock.TextFormat.TextWrapping.Mode = Drawing.Text.TextWrapMode.WrapByMaxWidthPixels;
break;
case "shield-wrap-before":
TextWrapping tw = textBlock.TextFormat.TextWrapping;
if (tw.Characters == null)
tw.Characters = new WrapCharacter[] { new WrapCharacter() };
tw.Characters[0].WrapType = CharacterWrapType.Before;
break;
case "shield-wrap-character":
TextWrapping tw2 = textBlock.TextFormat.TextWrapping;
if (tw2.Characters == null)
tw2.Characters = new WrapCharacter[] { new WrapCharacter() };
tw2.Characters[0].Character = pv.Value;
break;
case "shield-character-spacing":
textBlock.TextFormat.TextSpacing.CharacterSpacing = Convert.ToSingle(pv.Value);
break;
case "shield-line-spacing":
textBlock.TextFormat.TextSpacing.Leading = Convert.ToSingle(pv.Value);
break;
case "shield-allow-overlap":
symText.LabelBehaviour.AllowOverlap = Convert.ToBoolean(pv.Value);
break;
case "shield-min-distance":
symText.LabelBehaviour.CollisionMeasures.Add(string.Format("MinimumDistance({0})", pv.Value));
break;
case "shield-avoid-edges":
symText.LabelBehaviour.AvoidEdges = Convert.ToBoolean(pv.Value);
break;
case "shield-spacing":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "shield-min-padding":
UnsupportedProperty(pv);
break;
case "shield-placement-type":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "shield-placements":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "shield-text-dx":
text_dx = Convert.ToSingle(pv.Value);
break;
case "shield-text-dy":
text_dy = Convert.ToSingle(pv.Value);
break;
case "shield-dx":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "shield-dy":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "shield-comp-op":
UnsupportedProperty(pv);
break;
default:
break;
}
}
}
catch (Exception ex)
{
ThrowParsingException(ex, pv);
}
if (text_dx != 0F || text_dy != 0F)
symText.Graphic.Size = new SizeF(text_dx, text_dy);
ApplyTextBlockFormat(symText.TextLayout);
symText.LabelPlacement = CreateLabelPlacement(lpi);
if ("point".Equals(lpi.Placement))
geomTrans.DisplacementX = geomTrans.DisplacementY = string.Empty;
symText.GeometryExpression = ToGeometryExpression(geomTrans);
return symText;
}
private TextSymbolizer CreateTextSymbolizer(NodePropertyValue[] properties)
{
TextSymbolizer symText = new TextSymbolizer();
symText.Clip = true;
symText.TextLayout.Alignment = TextAlignment.CenterAligned;
GeometryTransformInfo geomTrans = new GeometryTransformInfo();
LabelPlacementInfo lpi = new LabelPlacementInfo();
lpi.Symbolizer = (int)SymbolizerType.Text;
TextLayoutBlock textBlock = new TextLayoutBlock();
string textTransform = null;
int blockIndex = -1;
int nProps = properties.Length;
NodePropertyValue pv = null;
try
{
for (int i = 0; i < nProps; i++)
{
pv = properties[i];
switch (pv.Name)
{
case "text-name":
if (pv.Value != null)
{
string textExpr = ToExpression(pv.Value);
if (!string.IsNullOrEmpty(textTransform))
textExpr = GetTextTransform(textExpr, textTransform);
textBlock.TextExpression = textExpr;
// TODO
if (textBlock.TextExpression == string.Empty)
symText.Enabled = false;
blockIndex++;
if (blockIndex > 0)
textBlock = new TextLayoutBlock();
symText.TextLayout.Blocks.Add(textBlock);
}
break;
case "text-face-name":
SetFontName(textBlock, pv.Value);
break;
case "text-transform":
if (string.IsNullOrEmpty(textBlock.TextExpression))
textTransform = pv.Value;
else
textBlock.TextExpression = GetTextTransform(textBlock.TextExpression, pv.Value);
break;
case "text-fill":
Color clr = ColorUtility.FromHtml(pv.Value);
textBlock.TextFormat.TextStyle.Color = clr;
if (clr.A != 255)
textBlock.TextFormat.TextStyle.Opacity = clr.A / 255.0F;
break;
case "text-opacity":
textBlock.TextFormat.TextStyle.Opacity = Convert.ToSingle(pv.Value);
break;
case "text-size":
textBlock.TextFormat.TextStyle.Font.Size = Convert.ToSingle(pv.Value);
break;
case "text-halo-radius":
textBlock.TextFormat.TextStyle.Halo.Radius = Convert.ToSingle(pv.Value);
break;
case "text-halo-fill":
Color clr2 = ColorUtility.FromHtml(pv.Value);
textBlock.TextFormat.TextStyle.Halo.Color = clr2;
if (clr2.A != 255)
textBlock.TextFormat.TextStyle.Halo.Opacity = clr2.A / 255F;
break;
case "text-halo-opacity": // This property does not exist in the specification.
textBlock.TextFormat.TextStyle.Halo.Opacity = Convert.ToSingle(pv.Value);
break;
case "text-halo-rasterizer":
// TODO
break;
case "text-ratio":
//TODO
break;
case "text-clip":
symText.Clip = Convert.ToBoolean(pv.Value);
break;
case "text-align":
textBlock.TextFormat.TextAlignment = ToTextAlignment(pv.Value);
break;
case "text-horizontal-alignment":
// TODO
break;
case "text-vertical-alignment":
// TODO
break;
case "text-wrap-width":
textBlock.TextFormat.TextWrapping.MaxWidth = Convert.ToUInt32(pv.Value);
textBlock.TextFormat.TextWrapping.Mode = Drawing.Text.TextWrapMode.WrapByMaxWidthPixels;
break;
case "text-wrap-before":
TextWrapping tw = textBlock.TextFormat.TextWrapping;
if (tw.Characters == null || tw.Characters.Length == 0)
tw.Characters = new WrapCharacter[] { new WrapCharacter() };
tw.Characters[0].WrapType = CharacterWrapType.Before;
break;
case "text-wrap-character":
TextWrapping tw2 = textBlock.TextFormat.TextWrapping;
if (tw2.Characters == null || tw2.Characters.Length == 0)
tw2.Characters = new WrapCharacter[] { new WrapCharacter() };
tw2.Characters[0].Character = pv.Value;
break;
case "text-character-spacing":
textBlock.TextFormat.TextSpacing.CharacterSpacing = Convert.ToSingle(pv.Value);
break;
case "text-line-spacing":
textBlock.TextFormat.TextSpacing.Leading = Convert.ToSingle(pv.Value);
break;
case "text-allow-overlap":
symText.LabelBehaviour.AllowOverlap = Convert.ToBoolean(pv.Value);
break;
case "text-min-distance":
symText.LabelBehaviour.CollisionMeasures.Add(string.Format("MinimumDistance({0})", pv.Value));
break;
case "text-avoid-edges":
symText.LabelBehaviour.AvoidEdges = Convert.ToBoolean(pv.Value);
break;
case "text-spacing":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-max-char-angle-delta":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-label-position-tolerance":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-min-padding":
UnsupportedProperty(pv);
break;
case "text-min-path-length":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-orientation":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-placement":
lpi.Placement = pv.Value;
if (lpi.Placement == "line")
geomTrans.OffsetCurve = true;
break;
case "text-placement-type":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-placements":
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-dx":
geomTrans.DisplacementX = pv.Value;
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-dy":
geomTrans.DisplacementY = pv.Value;
lpi.Properties.Add(new KeyValuePair<string, string>(pv.Name, pv.Value));
break;
case "text-comp-op":
UnsupportedProperty(pv);
break;
default:
break;
}
}
}
catch (Exception ex)
{
ThrowParsingException(ex, pv);
}
ApplyTextBlockFormat(symText.TextLayout);
symText.LabelPlacement = CreateLabelPlacement(lpi);
if ("point".Equals(lpi.Placement))
geomTrans.DisplacementX = geomTrans.DisplacementY = string.Empty;
symText.GeometryExpression = ToGeometryExpression(geomTrans);
return symText;
}
private void SetFontName(TextLayoutBlock textBlock, string value)
{
if (!string.IsNullOrEmpty(value))
{
string strFace = RemoveQuotes(value);
if (this.FontSets != null)
{
FontSet fontSet = null;
if (this.FontSets.TryGetValue(strFace, out fontSet))
{
textBlock.FontSetName = fontSet.Name;
return;
}
}
string[] fontParts = value.Split(new char[] { ' ' });
string fontName = fontParts[0];
FontStyles style = FontStyles.Normal;
FontWeight weight = FontWeight.Normal;
for (int i = 1; i < fontParts.Length; i++)
{
string part = fontParts[i];
if (part.Equals("Oblique", StringComparison.OrdinalIgnoreCase))
style = FontStyles.Oblique;
else if (part.Equals("Italic", StringComparison.OrdinalIgnoreCase))
style = FontStyles.Italic;
else if (part.Equals("Bold", StringComparison.OrdinalIgnoreCase))
weight = FontWeight.Bold;
else
fontName += " " + part;
}
textBlock.FontSetName = string.Empty;
textBlock.TextFormat.TextStyle.Font.Name = fontName.Trim(new char[] { ' ' });
textBlock.TextFormat.TextStyle.Font.Style = style;
textBlock.TextFormat.TextStyle.Font.Weight = weight;
}
}
