public static void EditQR()
{
Document doc =
Application.DocumentManager.MdiActiveDocument;
Editor ed = doc.Editor;
Database db = doc.Database;
// Ask user to select an QR code, hatch or raster image
PromptEntityOptions peo =
new PromptEntityOptions("Select a QR code: ");
peo.SetRejectMessage(
"\nMust be a hatch or a raster image"
);
peo.AddAllowedClass(typeof(Hatch), true);
// AutoCAD crash if we try AddAllowedClass for RasterImage
// when no raster image is defined or just hatch QRs were
// defined, probably because in C++ we need to call
// acedArxLoad("acismui.arx"), which is not exposed in .NET,
// so let's check before if the drawing contains any
// RasterImages, if not we don't need this filter.
if (!RasterImageDef.GetImageDictionary(db).IsNull)
{
peo.AddAllowedClass(typeof(RasterImage), true);
}
PromptEntityResult entityResult = ed.GetEntity(peo);
if (entityResult.Status != PromptStatus.OK)
{
return;
}
Transaction tr = db.TransactionManager.StartTransaction();
using (tr)
{
Entity ent =
tr.GetObject(entityResult.ObjectId, OpenMode.ForRead)
as Entity;
ResultBuffer rb =
ent.GetXDataForApplication(APPLICATION_PREFIX);
if (rb != null && rb.AsArray().Length == 0)
{
ed.WriteMessage("\nThis is not a valid QR code");
tr.Commit(); //faster
return;
}
// Show the form with current information
QRCodeForm form = new QRCodeForm();
form.IsEditing = true;
form.QREncodeDataAsResultBuffer = rb;
rb.Dispose();
System.Windows.Forms.DialogResult res =
Application.ShowModalDialog(form);
if (res != System.Windows.Forms.DialogResult.OK)
{
return;
}
//Get insert point and size
double size =
ent.GeometricExtents.MaxPoint.X -
ent.GeometricExtents.MinPoint.X;
Point3d inspt = ent.GeometricExtents.MinPoint;
if (ent is RasterImage)
{
// Just update the raster image definition
RasterImage image = ent as RasterImage;
RasterImageDef imageDef =
tr.GetObject(image.ImageDefId, OpenMode.ForWrite)
as RasterImageDef;
imageDef.SourceFileName =
FormatDataHelper.EncodeQrCodeUrl(form.QREncodeData);
imageDef.Load();
}
else
{
// Erase current entity
ent.UpgradeOpen();
ent.Erase();
// Create a new one
Entity newEnt =
GenerateQRHatch(
form.QREncodeData, form.QREncode,
form.QRVersion, form.QRErrorCorrect, (int)size
);
if (newEnt == null)
{
return;
}
ResultBuffer newRb = form.QREncodeDataAsResultBuffer;
newEnt.XData = newRb;
newRb.Dispose();
newEnt.TransformBy(
Matrix3d.Displacement(inspt.GetAsVector())
);
AppendEntityToCurrentSpace(newEnt);
}
tr.Commit();
}
}
public static void GenerateQRByForm()
{
// Show the form
QRCodeForm form = new QRCodeForm();
System.Windows.Forms.DialogResult res =
Application.ShowModalDialog(form);
if (res != System.Windows.Forms.DialogResult.OK)
{
return;
}
// Obtain insert point and size
Point3d insertPoint = Point3d.Origin;
double size = form.QRSize;
if (
PromptInsertPointAndSize(
form.QRSacelOnScreen,
ref insertPoint, ref size) != PromptStatus.OK
)
{
return;
}
// Generate the QR entity
Entity ent = null;
switch (form.QREntityType)
{
case QRCodeForm.QRType.Hatch:
// Generate the QR as a Hatch entity
ent = GenerateQRHatch(
form.QREncodeData, form.QREncode,
form.QRVersion, form.QRErrorCorrect, size
);
if (ent == null)
{
return;
}
// Append to the current space
AppendEntityToCurrentSpace(ent);
break;
case QRCodeForm.QRType.Online:
// Generate the QR as an ONline Raster Image entity
string uri =
FormatDataHelper.EncodeQrCodeUrl(form.QREncodeData);
ent = CreateRasterImage(uri, size);
break;
}
if (ent == null)
{
return;
}
// Add the xdata and move the ent to the correct location
SetXDataAndMoveToLocation(
ent, form.QREncodeDataAsResultBuffer, insertPoint
);
}