DPoint GetWmfSize()
{
if (WmfIsPlaceable)
{
bytesRead = 0;
placeable = GetWmfPlaceable();
header = GetWmfHeader();
bool records = true;
while (records)
{
int bytesReadPlusFuncHeaderSize = bytesRead;
Wmf.FuncHeader fh = GetWmfFuncHeader();
bytesReadPlusFuncHeaderSize += (int)fh.Size * 2;
switch (fh.Function)
{
case Wmf.SetWindowOrg:
winY = GetInt16();
winX = GetInt16();
break;
case Wmf.SetWindowExt:
winHeight = GetInt16();
winWidth = GetInt16();
break;
case Wmf.EOF:
records = false;
// this does not always work too well (there are some wacky values in wmf files)
double width = Math.Abs(winWidth);
if (winWidth != Math.Round((placeable.Right - placeable.Left) * ((double)PageTools.DpiX / placeable.Inch)))
width *= (double)PageTools.DpiX / placeable.Inch;
double height = Math.Abs(winHeight);
if (winHeight != Math.Round((placeable.Bottom - placeable.Top) * ((double)PageTools.DpiY / placeable.Inch)))
height *= (double)PageTools.DpiY / placeable.Inch;
return new DPoint(width, height);
}
if (bytesRead != bytesReadPlusFuncHeaderSize)
bytesRead = bytesReadPlusFuncHeaderSize;
}
}
return new DPoint(0, 0);
}
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 WmfGraphics(double x1, double y1, double x2, double y2)
{
winX = 0;
winY = 0;
winWidth = x2 - x1;
winHeight = y2 - y1;
// create memory stream
ms = new MemoryStream();
// write placeable
Wmf.Placeable p = new Wmf.Placeable();
p.Key = Wmf.PlaceableKey;
p.HWmf = 0;
p.Left = (ushort)winX;
p.Top = (ushort)winY;
p.Right = (ushort)winWidth;
p.Bottom = (ushort)winHeight;
p.Inch = 96;
p.Reserved = 0;
// checksum
int sum = 0;
byte[] cd = RawSerialize(p);
for (int i = 0; i < (Marshal.SizeOf(typeof(Wmf.Placeable)) - 2 /* WmfPlaceable.Checksum is UInt16 */) / 2; i++)
sum = sum ^ BitConverter.ToUInt16(cd, i * 2);
p.Checksum = (ushort)sum;
byte[] buf = RawSerialize(p);
ms.Write(buf, 0, buf.Length);
// write header
Wmf.Header h = new Wmf.Header();
h.Type = 0x0002;
h.HeaderSize = (ushort)(Marshal.SizeOf(typeof(Wmf.Header)) / 2);
h.Version = 0x0300;
h.Filesize = 0; // see SaveToFile
h.NumOfObjects = 0; // see SaveToFile
h.MaxRecord = 0; // see SaveToFile
h.NumOfMembers = 0; // not used
buf = RawSerialize(h);
ms.Write(buf, 0, buf.Length);
// set window space
WriteFuncHeader(5, Wmf.SetWindowOrg);
WriteUShort((ushort)winX);
WriteUShort((ushort)winY);
WriteFuncHeader(5, Wmf.SetWindowExt);
WriteUShort((ushort)winWidth);
WriteUShort((ushort)winHeight);
/*
// draw stuff
DrawEllipse(2, 2, 96, 96, DColor.Blue, 1, 2, DStrokeStyle.Dot);
FillRect(10, 10, 80, 80, DColor.Red, 1);
DrawRect(20, 20, 60, 60, DColor.LightGray, 1, 2, DStrokeStyle.Solid, DStrokeJoin.Bevel);
DrawEllipse(20, 20, 60, 60, DColor.Blue, 1, 2, DStrokeStyle.DashDotDot);
DrawLine(new DPoint(15, 50), new DPoint(85, 50), DColor.White, 1, DStrokeStyle.Solid, 1, DStrokeCap.Butt);
DPoints pts = new DPoints();
for (int i = 0; i < 50; i += 5)
for (int j = 0; j < 50; j += 5)
pts.Add(new DPoint(i, j + i));
DrawPolyline(pts, DColor.Black);
pts.Clear();
pts.Add(new DPoint(50, 50));
pts.Add(new DPoint(75, 75));
pts.Add(new DPoint(50, 75));
FillPolygon(pts, DColor.Blue, 1);
*/
}
