/// <summary>
/// Allocates new shape id for the new drawing group id.
/// </summary>
/// <param name="drawingGroupId"></param>
/// <param name="dg"></param>
/// <returns>a new shape id.</returns>
public virtual int AllocateShapeId(short drawingGroupId, EscherDgRecord dg)
{
dgg.NumShapesSaved = (dgg.NumShapesSaved + 1);
// Add to existing cluster if space available
for (int i = 0; i < dgg.FileIdClusters.Length; i++)
{
EscherDggRecord.FileIdCluster c = dgg.FileIdClusters[i];
if (c.DrawingGroupId == drawingGroupId && c.NumShapeIdsUsed != 1024)
{
int result = c.NumShapeIdsUsed + (1024 * (i + 1));
c.IncrementShapeId();
dg.NumShapes = (dg.NumShapes + 1);
dg.LastMSOSPID = (result);
if (result >= dgg.ShapeIdMax)
{
dgg.ShapeIdMax = (result + 1);
}
return(result);
}
}
// Create new cluster
dgg.AddCluster(drawingGroupId, 0);
dgg.FileIdClusters[dgg.FileIdClusters.Length - 1].IncrementShapeId();
dg.NumShapes = (dg.NumShapes + 1);
int result2 = (1024 * dgg.FileIdClusters.Length);
dg.LastMSOSPID = (result2);
if (result2 >= dgg.ShapeIdMax)
{
dgg.ShapeIdMax = (result2 + 1);
}
return(result2);
}
/**
* Allocates new shape id for the new drawing Group id.
*
* @return a new shape id.
*/
public int AllocateShapeId(short drawingGroupId)
{
// Get the last shape id for this drawing Group.
EscherDgRecord dg = (EscherDgRecord)dgMap[drawingGroupId];
int lastShapeId = dg.LastMSOSPID;
// Have we run out of shapes for this cluster?
int newShapeId = 0;
if (lastShapeId % 1024 == 1023)
{
// Yes:
// Find the starting shape id of the next free cluster
newShapeId = FindFreeSPIDBlock();
// Create a new cluster in the dgg record.
dgg.AddCluster(drawingGroupId, 1);
}
else
{
// No:
// Find the cluster for this drawing Group with free space.
for (int i = 0; i < dgg.FileIdClusters.Length; i++)
{
EscherDggRecord.FileIdCluster c = dgg.FileIdClusters[i];
if (c.DrawingGroupId == drawingGroupId)
{
if (c.NumShapeIdsUsed != 1024)
{
// Increment the number of shapes used for this cluster.
c.IncrementShapeId();
}
}
// If the last shape id = -1 then we know to Find a free block;
if (dg.LastMSOSPID == -1)
{
newShapeId = FindFreeSPIDBlock();
}
else
{
// The new shape id to be the last shapeid of this cluster + 1
newShapeId = dg.LastMSOSPID + 1;
}
}
}
// Increment the total number of shapes used in the dgg.
dgg.NumShapesSaved = (dgg.NumShapesSaved + 1);
// Is the new shape id >= max shape id for dgg?
if (newShapeId >= dgg.ShapeIdMax)
{
// Yes:
// Set the max shape id = new shape id + 1
dgg.ShapeIdMax = newShapeId + 1;
}
// Set last shape id for this drawing Group.
dg.LastMSOSPID = newShapeId;
// Increased the number of shapes used for this drawing Group.
dg.IncrementShapeCount();
return(newShapeId);
}