/// <summary>
/// Loads the FlowChart document from a stream.
/// </summary>
public void LoadFromStream(Stream stream)
{
try
{
loading = true;
SuspendLayout();
ClearAll();
PersistContext ctx = new PersistContext(stream, this);
ctx.readHeader();
// read basic-type flowchart properties
DocInfoVer1 docInfo1 = (DocInfoVer1)ctx.loadObject();
DocInfoVer2 docInfo2 = (DocInfoVer2)ctx.loadObject();
docInfo1.apply(this);
docInfo2.apply(this);
textFormat = ctx.loadStringFormat();
Font = ctx.loadFont();
BackgroundImage = ctx.loadImage();
// read diagram objects
zOrder = (ChartObjectCollection)ctx.loadObject();
groups = (GroupCollection)ctx.loadObject();
selection = (Selection)ctx.loadObject();
ctx.loadReference(this);
if (ctx.FileVersion > 2)
{
shapeTemplate = (ShapeTemplate)ctx.loadObject();
if (ctx.FileVersion > 3)
{
Brush.RestoreBrushes(this, new BinaryReader(stream), ctx);
boxPen = (Pen)ctx.loadObject();
arrowPen = (Pen)ctx.loadObject();
tablePen = (Pen)ctx.loadObject();
ctx.loadReference(this);
ctx.loadReference(this);
ctx.loadReference(this);
boxSelStyle = (HandlesStyle)ctx.reader.ReadInt32();
tableSelStyle = (HandlesStyle)ctx.reader.ReadInt32();
if (ctx.FileVersion > 4)
{
// new in save format 5
allowLinksRepeat = ctx.reader.ReadBoolean();
if (ctx.FileVersion > 5)
{
// new in save format 6
PolyTextLayout = ctx.reader.ReadBoolean();
ShapeOrientation = ctx.reader.ReadSingle();
if (ctx.FileVersion > 7)
{
// new in save format 8
routeArrows = ctx.reader.ReadBoolean();
arrowsRetainForm = ctx.reader.ReadBoolean();
arrowTextStyle = (ArrowTextStyle)ctx.reader.ReadInt32();
tableLinkStyle = (TableLinkStyle)ctx.reader.ReadInt32();
if (ctx.FileVersion >= 12)
{
// new in save format 12
measureUnit = (GraphicsUnit)ctx.reader.ReadInt32();
docExtentsMin = ctx.loadRectF();
if (ctx.FileVersion > 13)
{
// new in save format 14
expandBtnPos = (ExpandButtonPosition)ctx.reader.ReadInt32();
// not used anymore
ctx.reader.ReadInt32();
ctx.reader.ReadInt32();
enableStyledText = ctx.reader.ReadBoolean();
usePolyTextLt = ctx.reader.ReadBoolean();
ctx.loadReference(this); // brush
if (ctx.FileVersion > 16)
{
// new in save format 17
arrowText = ctx.reader.ReadString();
boxText = ctx.reader.ReadString();
arrowCrossings = (ArrowCrossings)ctx.reader.ReadInt32();
gridStyle = (GridStyle)ctx.reader.ReadInt32();
crossRadius = ctx.reader.ReadSingle();
if (ctx.FileVersion > 19)
{
// new in save format 20
ctx.loadReference(this); // exteriorBrush
arrowsSnapToBorders = ctx.reader.ReadBoolean();
arrowSelStyle = (HandlesStyle)ctx.reader.ReadInt32();
if (ctx.FileVersion > 20)
{
// new in save format 21
Tag = null;
bool tagAvailable = ctx.reader.ReadBoolean();
if (tagAvailable)
Tag = ctx.loadTag();
if (ctx.FileVersion > 26)
{
// new in save format 27
roundedArrows = ctx.reader.ReadBoolean();
roundedArrowsRadius = ctx.reader.ReadSingle();
}
}
}
}
}
}
}
}
}
}
}
// finish load
ctx.loadRemainingObjects();
ctx.setReferences();
// add the objects to their specialized collections
foreach (ChartObject obj in zOrder)
addToObjColl(obj);
foreach (Group group in groups)
group.updateObjCol();
Brush.freeUnusedBrushes();
foreach (ChartObject obj in zOrder)
obj.onLoad();
dirty = false;
Invalidate();
}
finally
{
loading = false;
ResumeLayout(true);
}
}