private bool CheckTextPrimitive(TextPrimitive primitive, string fontFamily, double fontSize,
FontStyle fontStyle, FontWeight fontWeight)
{
do
{
if (!MathEx.AmostEqual(primitive.FontSize, fontSize))
{
break;
}
if (primitive.FontFamily != fontFamily)
{
break;
}
if (primitive.FontStyle != fontStyle)
{
break;
}
if (primitive.FontWeight != fontWeight)
{
break;
}
//
return(false);
} while (false);
return(true);
}
private bool CheckTextPrimitive(TextPrimitive primitive, StyleRuleSet style)
{
do
{
if (primitive.TextChanged)
{
primitive.TextChanged = false;
break;
}
double fontSize = style.FontSize;
if (!MathEx.AmostEqual(primitive.FontSize, fontSize))
{
break;
}
string fontFamily = style.FontFamily;
if (primitive.FontFamily != fontFamily)
{
break;
}
FontStyle fontStyle = style.FontStyle;
if (primitive.FontStyle != fontStyle)
{
break;
}
FontWeight fontWeight = style.FontWeight;
if (primitive.FontWeight != fontWeight)
{
break;
}
return(false);
} while (false);
return(true);
}
public override void DrawEllipse(Brush brush, Pen pen, Point center, double radiusX, double radiusY)
{
if (brush == null && pen == null || radiusX <= 0 || radiusY <= 0)
{
return;
}
EnsureContent();
unsafe
{
if (!this.content.ReadRecord(out DrawEllipseCommand record))
{//different record type: append new record
record.BrushIndex = this.content.AddDependentResource(brush);
record.PenIndex = this.content.AddDependentResource(pen);
record.Center = center;
record.RadiusX = radiusX;
record.RadiusY = radiusY;
this.content.WriteRecord(RecordType.DrawEllipse, (byte *)&record, sizeof(DrawEllipseCommand));
return;
}
//same type: update record if different
bool recordNeedOverwrite = false;
if (!Point.AlmostEqual(record.Center, center))
{
record.Center = center;
recordNeedOverwrite = true;
}
if (!MathEx.AmostEqual(record.RadiusX, radiusX))
{
record.RadiusX = radiusX;
recordNeedOverwrite = true;
}
if (!MathEx.AmostEqual(record.RadiusY, radiusY))
{
record.RadiusY = radiusY;
recordNeedOverwrite = true;
}
if (this.content.ReadDependentResource(record.PenIndex, out Pen oldPen))
{
if (!oldPen.Equals(pen))
{
record.PenIndex = this.content.AddDependentResource(pen);
recordNeedOverwrite = true;
}
}
else
{
record.PenIndex = this.content.AddDependentResource(pen);
recordNeedOverwrite = true;
}
if (this.content.ReadDependentResource(record.BrushIndex, out Brush oldBrush))
{
if (!oldBrush.Equals(brush))
{
record.BrushIndex = this.content.AddDependentResource(brush);
recordNeedOverwrite = true;
}
}
else
{
record.BrushIndex = this.content.AddDependentResource(brush);
recordNeedOverwrite = true;
}
if (recordNeedOverwrite)
{
content.WriteRecord(RecordType.DrawEllipse, (byte *)&record, sizeof(DrawEllipseCommand));
}
}
}
