FillRule MakeFillRule(DFillRule fillRule)
{
if (fillRule == DFillRule.EvenOdd)
return FillRule.EvenOdd;
return FillRule.Winding;
}
private void PaintWmf(DGraphics dg)
{
dg.Save();
dg.Clip(Rect);
// store current matrix
DMatrix m = dg.SaveTransform();
// clear gdi objects
WmfGdiObjects.Clear();
// check for placeable key
if (WmfIsPlaceable)
{
bytesRead = 0;
// read placeable header
placeable = GetWmfPlaceable();
// checksum
int sum = 0;
for (int i = 0; i < (Marshal.SizeOf(typeof(Wmf.Placeable)) - 2 /* WmfPlaceable.Checksum is UInt16 */) / 2; i++)
sum = sum ^ BitConverter.ToUInt16(ImageData, i * 2);
if (sum != placeable.Checksum)
System.Diagnostics.Debug.Fail("checksum failed");
// init matrix
WmfUpdateMaxtrix(dg, m);
// read header
header = GetWmfHeader();
// iterate draw commands
bool records = true;
while (records)
{
int bytesReadPlusFuncHeaderSize = bytesRead;
Wmf.FuncHeader fh = GetWmfFuncHeader();
bytesReadPlusFuncHeaderSize += (int)fh.Size * 2;
bool breakme = false;
switch (fh.Function)
{
case Wmf.SaveDC:
break;
case Wmf.CreatePalette:
break;
case Wmf.SetBkMode:
int bkMode = GetInt16();
break;
case Wmf.SetMapMode:
int mapMode = GetInt16();
break;
case Wmf.SetROP2:
break;
case Wmf.SetRelabs:
break;
case Wmf.SetPolyFillMode:
int polyfillMode = GetInt16();
if (polyfillMode == Wmf.PfmAlernate)
fillRule = DFillRule.EvenOdd;
else
fillRule = DFillRule.Winding;
break;
case Wmf.SetStretchBltMode:
break;
case Wmf.DeleteObject:
WmfDeleteGdiObject(GetInt16());
break;
case Wmf.RestoreDC:
break;
case Wmf.SelectObject:
WmfSelectGdiObject(GetInt16());
break;
case Wmf.SetTextAlign:
break;
case Wmf.SetBkColor:
break;
case Wmf.SetTextColor:
break;
case Wmf.SetWindowOrg:
winY = GetInt16();
winX = GetInt16();
WmfUpdateMaxtrix(dg, m);
break;
case Wmf.SetWindowExt:
winHeight = GetInt16();
winWidth = GetInt16();
WmfUpdateMaxtrix(dg, m);
break;
case Wmf.SetViewportOrg:
viewY = GetInt16();
viewX = GetInt16();
//wmfUpdateMaxtrix(dg, m);
break;
case Wmf.SetViewportExt:
viewHeight = GetInt16();
viewWidth = GetInt16();
//wmfUpdateMaxtrix(dg, m);
break;
case Wmf.LineTo:
DPoint pt = GetPoint();
if (StrokeValid)
dg.DrawLine(curPoint, pt, stroke, 1, strokeStyle, strokeWidth, strokeCap);
curPoint = pt;
break;
case Wmf.MoveTo:
curPoint = GetPoint();
break;
case Wmf.SelectPalette:
break;
case Wmf.CreatePenIndirect:
int gdiPenStyle = GetInt16();
int widthX = GetInt16();
int widthY = GetInt16();
DColor penColor = GetColor();
double penWidth = widthX;
WmfApplyTransforms(ref penWidth);
DStrokeStyle penStyle = DStrokeStyle.Solid;
DStrokeCap penCap = DStrokeCap.Round;
DStrokeJoin penJoin = DStrokeJoin.Round;
if ((gdiPenStyle & Wmf.PS_DASHDOTDOT) == Wmf.PS_DASHDOTDOT)
penStyle = DStrokeStyle.DashDotDot;
else if ((gdiPenStyle & Wmf.PS_DASHDOT) == Wmf.PS_DASHDOT)
penStyle = DStrokeStyle.DashDot;
else if ((gdiPenStyle & Wmf.PS_DOT) == Wmf.PS_DOT)
penStyle = DStrokeStyle.Dot;
else if ((gdiPenStyle & Wmf.PS_DASH) == Wmf.PS_DASH)
penStyle = DStrokeStyle.Dash;
else
penStyle = DStrokeStyle.Solid;
if ((gdiPenStyle & Wmf.PS_ENDCAP_FLAT) == Wmf.PS_ENDCAP_FLAT)
penCap = DStrokeCap.Butt;
else if ((gdiPenStyle & Wmf.PS_ENDCAP_SQUARE) == Wmf.PS_ENDCAP_SQUARE)
penCap = DStrokeCap.Square;
else
penCap = DStrokeCap.Round;
if ((gdiPenStyle & Wmf.PS_JOIN_MITER) == Wmf.PS_JOIN_MITER)
penJoin = DStrokeJoin.Mitre;
else if ((gdiPenStyle & Wmf.PS_JOIN_BEVEL) == Wmf.PS_JOIN_BEVEL)
penJoin = DStrokeJoin.Bevel;
else
penJoin = DStrokeJoin.Round;
if ((gdiPenStyle & Wmf.PS_NULL) == Wmf.PS_NULL)
WmfAddGdiObject(new WmfGdiPen(DColor.Empty, penWidth, penStyle, penCap, penJoin));
else
WmfAddGdiObject(new WmfGdiPen(penColor, penWidth, penStyle, penCap, penJoin));
break;
case Wmf.CreateFontIndirect:
WmfAddGdiObject("font");
break;
case Wmf.CreateBrushIndirect:
int brushStyle = GetInt16();
DColor brushColor = GetColor();
int brushHatch = GetInt16();
if ((brushStyle & Wmf.BS_NULL) == Wmf.BS_NULL)
WmfAddGdiObject(new WmfGdiBrush(DColor.Empty));
else
WmfAddGdiObject(new WmfGdiBrush(brushColor));
break;
case Wmf.Polygon:
DPoints polygonPts = GetPolyPoints(GetInt16(), true);
if (FillValid)
dg.FillPolygon(polygonPts, fill, 1, fillRule);
if (StrokeValid)
dg.DrawPolyline(polygonPts, stroke, 1, strokeWidth, strokeStyle, strokeJoin, strokeCap);
break;
case Wmf.Polyline:
DPoints polylinePts = GetPolyPoints(GetInt16(), false);
if (StrokeValid)
dg.DrawPolyline(polylinePts, stroke, 1, strokeWidth, strokeStyle, strokeJoin, strokeCap);
break;
case Wmf.Ellipse:
goto case Wmf.Rectangle;
case Wmf.Rectangle:
DPoint br = GetPoint();
DPoint tl = GetPoint();
if (FillValid)
{
if (fh.Function == Wmf.Rectangle)
dg.FillRect(tl.X, tl.Y, br.X - tl.X, br.Y - tl.Y, fill, 1);
else if (fh.Function == Wmf.Ellipse)
dg.FillEllipse(tl.X, tl.Y, br.X - tl.X, br.Y - tl.Y, fill, 1);
}
if (StrokeValid)
{
if (fh.Function == Wmf.Rectangle)
dg.DrawRect(tl.X, tl.Y, br.X - tl.X, br.Y - tl.Y, stroke, 1, strokeWidth, strokeStyle, strokeJoin);
else if (fh.Function == Wmf.Ellipse)
dg.DrawEllipse(tl.X, tl.Y, br.X - tl.X, br.Y - tl.Y, stroke, 1, strokeWidth, strokeStyle);
}
break;
case Wmf.PolyPolygon:
// find out how many points
int numPolygons = GetInt16();
int[] numPoints = new int[numPolygons];
for (int i = 0; i < numPolygons; i++)
numPoints[i] = GetInt16();
// join polygons together
DPoints polyPolyPoints = new DPoints();
for (int i = 0; i < numPolygons; i++)
foreach (DPoint polyPolyPt in GetPolyPoints(numPoints[i], true))
polyPolyPoints.Add(polyPolyPt);
// draw
if (FillValid)
dg.FillPolygon(polyPolyPoints, fill, 1, fillRule);
if (StrokeValid)
dg.DrawPolyline(polyPolyPoints, stroke, 1, strokeWidth, strokeStyle, strokeJoin, strokeCap);
break;
case Wmf.Escape:
break;
default:
breakme = true;
break;
}
if (bytesRead != bytesReadPlusFuncHeaderSize)
bytesRead = bytesReadPlusFuncHeaderSize;
if (breakme)
break;
}
}
dg.Restore();
}
public override void FillPolygon(DPoints pts, DColor color, double alpha, DFillRule fillRule)
{
if (pts.Count > 1)
{
cr.SetSource(MakeColor(color, alpha));
cr.FillRule = MakeFillRule(fillRule);
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.Fill();
}
}
public abstract void FillPolygon(DPoints pts, DColor color, double alpha, DFillRule fillRule);
public override void FillPolygon(DPoints pts, DColor color, double alpha, DFillRule fillRule)
{
UpdateMaxNumOfObjects(1);
CreateBrushIndirect(1, color);
SelectObject(1);
SelectObject((uint)Emf.StockObject.NULL_PEN);
Polygon(pts);
DeleteObject(1);
}
public override void FillPolygon(DPoints pts, DColor color, double alpha, DFillRule fillRule)
{
CreateBrushIndirect(color);
SelectObject(0);
CreatePenIndirect();
SelectObject(1);
Polygon(pts);
DeleteObject(1);
DeleteObject(0);
}
FillMode MakeFillMode(DFillRule fillRule)
{
if (fillRule == DFillRule.EvenOdd)
return FillMode.Alternate;
return FillMode.Winding;
}
public override void FillPolygon(DPoints pts, DColor color, double alpha, DFillRule fillRule)
{
if (pts.Count > 1)
g.FillPolygon(MakeBrush(DFillStyle.Solid, color, alpha), MakePoints(pts), MakeFillMode(fillRule));
}
