public abstract void DrawPolyline(DPoints pts, DColor color, double alpha, double strokeWidth, DStrokeStyle strokeStyle, DStrokeJoin strokeJoin, DStrokeCap strokeCap);
void WmfSelectGdiObject(int idx)
{
// this should not be happening but sometimes does?
if (idx == WmfGdiObjects.Count)
idx--;
// select object and apply properties to our graphics primatives
object o = WmfGdiObjects[idx];
if (o is WmfGdiBrush)
fill = ((WmfGdiBrush)o).Fill;
else if (o is WmfGdiPen)
{
stroke = ((WmfGdiPen)o).Stroke;
strokeWidth = ((WmfGdiPen)o).StrokeWidth;
strokeStyle = ((WmfGdiPen)o).StrokeStyle;
strokeCap = ((WmfGdiPen)o).StrokeCap;
strokeJoin = ((WmfGdiPen)o).StrokeJoin;
}
}
public override void DrawLine(DPoint pt1, DPoint pt2, DColor color, double alpha, DStrokeStyle strokeStyle, double strokeWidth, DStrokeCap strokeCap)
{
CreatePenIndirect(strokeWidth, color, strokeStyle, DStrokeJoin.Round, strokeCap);
SelectObject(0);
CreateBrushIndirect();
SelectObject(1);
MoveTo(pt1);
LineTo(pt2);
DeleteObject(1);
DeleteObject(0);
}
public abstract void DrawLine(DPoint pt1, DPoint pt2, DColor color, double alpha, DStrokeStyle strokeStyle, double strokeWidth, DStrokeCap strokeCap);
public override void DrawPolyline(DPoints pts, DColor color, double alpha, double strokeWidth, DStrokeStyle strokeStyle, DStrokeJoin strokeJoin, DStrokeCap strokeCap)
{
if (pts.Count > 1)
g.DrawLines(MakePen(WFHelper.MakeColor(color, alpha), strokeWidth, strokeStyle, strokeJoin, strokeCap), MakePoints(pts));
}
uint StrokePenStyle(DStrokeStyle ss, DStrokeJoin sj, DStrokeCap sc)
{
Emf.PenStyle _ss = 0;
switch (ss)
{
case DStrokeStyle.Dash:
_ss = Emf.PenStyle.PS_DASH;
break;
case DStrokeStyle.DashDot:
_ss = Emf.PenStyle.PS_DASHDOT;
break;
case DStrokeStyle.DashDotDot:
_ss = Emf.PenStyle.PS_DASHDOTDOT;
break;
case DStrokeStyle.Dot:
_ss = Emf.PenStyle.PS_DOT;
break;
case DStrokeStyle.Solid:
_ss = Emf.PenStyle.PS_SOLID;
break;
}
Emf.PenStyle _sj = 0;
switch (sj)
{
case DStrokeJoin.Bevel:
_sj = Emf.PenStyle.PS_JOIN_BEVEL;
break;
case DStrokeJoin.Mitre:
_sj = Emf.PenStyle.PS_JOIN_MITER;
break;
case DStrokeJoin.Round:
_sj = Emf.PenStyle.PS_JOIN_ROUND;
break;
}
Emf.PenStyle _sc = 0;
switch (sc)
{
case DStrokeCap.Butt:
_sc = Emf.PenStyle.PS_ENDCAP_FLAT;
break;
case DStrokeCap.Round:
_sc = Emf.PenStyle.PS_ENDCAP_ROUND;
break;
case DStrokeCap.Square:
_sc = Emf.PenStyle.PS_ENDCAP_SQUARE;
break;
}
return (uint)(_ss | _sj | _sc);
}
public override void DrawPolyline(DPoints pts, DColor color, double alpha, double strokeWidth, DStrokeStyle strokeStyle, DStrokeJoin strokeJoin, DStrokeCap strokeCap)
{
UpdateMaxNumOfObjects(1);
CreatePen(1, strokeWidth, color, strokeStyle, strokeJoin, strokeCap);
SelectObject(1);
SelectObject((uint)Emf.StockObject.NULL_BRUSH);
Polyline(pts);
DeleteObject(1);
}
public override void DrawPolyline(DPoints pts, DColor color, double alpha, double strokeWidth, DStrokeStyle strokeStyle, DStrokeJoin strokeJoin, DStrokeCap strokeCap)
{
if (pts.Count > 1)
{
cr.SetSource(MakeColor(color, alpha));
CairoStrokeStyle(cr, strokeStyle, strokeWidth);
cr.LineWidth = strokeWidth;
cr.LineJoin = MakeLineJoin(strokeJoin);
cr.LineCap = MakeLineCap(strokeCap);
cr.MoveTo(pts[0].X, pts[0].Y);
for (int i = 1; i < pts.Count; i++)
cr.LineTo(pts[i].X, pts[i].Y);
cr.Stroke();
}
}
void CreatePenIndirect(double sw, DColor col, DStrokeStyle ss, DStrokeJoin sj, DStrokeCap sc)
{
WriteFuncHeader(8, Wmf.CreatePenIndirect);
WriteUShort(StrokePenStyle(ss, sj, sc));
WriteUShort((ushort)sw);
WriteUShort((ushort)sw);
WriteColor(col);
// need this for Wmf.Header
numOfObjects++;
}
public override void DrawLine(DPoint pt1, DPoint pt2, DColor color, double alpha, DStrokeStyle strokeStyle, double strokeWidth, DStrokeCap strokeCap)
{
UpdateMaxNumOfObjects(1);
CreatePen(1, strokeWidth, color, strokeStyle, DStrokeJoin.Round, strokeCap);
SelectObject(1);
SelectObject((uint)Emf.StockObject.NULL_BRUSH);
MoveTo(pt1);
LineTo(pt2);
DeleteObject(1);
}
public override void DrawPolyline(DPoints pts, DColor color, double alpha, double strokeWidth, DStrokeStyle strokeStyle, DStrokeJoin strokeJoin, DStrokeCap strokeCap)
{
CreatePenIndirect(strokeWidth, color, strokeStyle, strokeJoin, strokeCap);
SelectObject(0);
CreateBrushIndirect();
SelectObject(1);
Polyline(pts);
DeleteObject(1);
DeleteObject(0);
}
private Pen MakePen(Color color, double strokeWidth, DStrokeStyle strokeStyle, DStrokeJoin strokeJoin, DStrokeCap strokeCap)
{
Pen p = new Pen(color, (float)strokeWidth);
p.DashStyle = MakeDashStyle(strokeStyle);
p.LineJoin = MakeLineJoin(strokeJoin);
p.SetLineCap(MakeLineCap(strokeCap), MakeLineCap(strokeCap), DashCap.Flat);
return p;
}
private DashCap MakeDashCap(DStrokeCap strokeCap)
{
switch (strokeCap)
{
case DStrokeCap.Butt:
return DashCap.Flat;
case DStrokeCap.Round:
return DashCap.Round;
case DStrokeCap.Square:
return DashCap.Flat;
}
return DashCap.Flat;
}
public WmfGdiPen(DColor stroke, double strokeWidth, DStrokeStyle strokeStyle, DStrokeCap strokeCap, DStrokeJoin strokeJoin)
{
Stroke = stroke;
StrokeWidth = strokeWidth;
StrokeStyle = strokeStyle;
StrokeCap = strokeCap;
StrokeJoin = strokeJoin;
}
void CreatePen(uint objectIndex, double sw, DColor col, DStrokeStyle ss, DStrokeJoin sj, DStrokeCap sc)
{
WriteRecordHeader(Emf.RecordType.EMR_CREATEPEN, 28);
WriteUInt(objectIndex);
WriteUInt(StrokePenStyle(ss, sj, sc));
WriteUInt((uint)sw);
WriteUInt((uint)sw);
WriteColor(col);
}
public override void DrawLine(DPoint pt1, DPoint pt2, DColor color, double alpha, DStrokeStyle strokeStyle, double strokeWidth, DStrokeCap strokeCap)
{
cr.SetSource(MakeColor(color, alpha));
cr.LineWidth = strokeWidth;
CairoStrokeStyle(cr, strokeStyle, strokeWidth);
cr.LineCap = MakeLineCap(strokeCap);
cr.MoveTo(pt1.X, pt1.Y);
cr.LineTo(pt2.X, pt2.Y);
cr.Stroke();
}
void ExtCreatePen(uint objectIndex, double sw, DColor col, DStrokeStyle ss, DStrokeJoin sj, DStrokeCap sc)
{
WriteRecordHeader(Emf.RecordType.EMR_EXTCREATEPEN, 52);
WriteUInt(objectIndex);
WriteUInt(0);
WriteUInt(0);
WriteUInt(0);
WriteUInt(0);
// LogPenEx
WriteUInt(StrokePenStyle(ss, sj, sc));
WriteUInt((uint)sw);
WriteUInt(Wmf.BS_SOLID);
WriteColor(col);
WriteUInt(0);
WriteUInt(0);
}
LineCap MakeLineCap(DStrokeCap strokeCap)
{
switch (strokeCap)
{
case DStrokeCap.Butt:
return LineCap.Butt;
case DStrokeCap.Round:
return LineCap.Round;
case DStrokeCap.Square:
return LineCap.Square;
}
return LineCap.Butt;
}
public override void DrawLine(DPoint pt1, DPoint pt2, DColor color, double alpha, DStrokeStyle strokeStyle, double strokeWidth, DStrokeCap strokeCap)
{
// see:
// http://groups.google.com/group/microsoft.public.dotnet.framework.drawing/browse_thread/thread/c52a43702fccaab8/838a26535bf6e2e6?lnk=st&q=drawline+outofmemoryexception#838a26535bf6e2e6
// http://www.codeprof.com/dev-archive/123/2-8-1234065.shtm
try
{
g.DrawLine(MakePen(WFHelper.MakeColor(color, alpha), strokeWidth, strokeStyle, DStrokeJoin.Mitre, strokeCap), (float)pt1.X, (float)pt1.Y, (float)pt2.X, (float)pt2.Y);
}
catch { }
}
