How to add text on sgimage?

[bigredinf]

I can load a dxf file to a tsgimage and show on my
delphi form,but how to
add a text string on this tsgimage ,
then print this tsgimage to printer?

[support]

Hello,

The following example is based on two demo applications from the <b>CADImportVCL</b> package (available on: http://www.cadsofttools.com/download/cadimportvcl.zip): <b>Add New Entities</b> and <b>Viewer</b>.

Code: Select all

<b>procedure</b> TForm1.CADImport2761Click(Sender: TObject);
<b>const</b> PO: <b>array</b>[Boolean] <b>of</b> TPrinterOrientation = (poPortrait,poLandscape);
<b>var</b>
  W,H: Double;
  PW,PH: Integer;
  Ent: TsgDXFText;
  Img: TsgDXFImage;
  FStoredNullWidth: Integer;
<b>begin</b>

{The following section is based on <b>Add New Entities</b> demo: ..\cadimportvcl\Delphi\Demos\Add new entities\.. }

  sgImage1.LoadFromFile('C:\Test.dxf');
  Img := TsgDXFImage(sgImage1.Picture.Graphic);
  sgImage1.Align := alClient;
  Ent := TsgDXFText.Create;
  Ent.Point := Img.Extents.TopLeft;
  Ent.Text := 'This is a test! This text has been added to a DXF file.';
  Ent.HAlign := 2;
  Ent.VAlign := 2;
  Ent.Height := 50;

  Img.Converter.Sections[csEntities].AddEntity(Ent);
  <b>if</b> Assigned(Img.Converter.OnCreate) <b>then</b>
    Img.Converter.OnCreate(Ent);
  Img.Converter.Loads(Ent);
  Img.GetExtents;

{The following section is based on <b>Viewer</b> demo: ..\cadimportvcl\Delphi\Demos\Viewer\.. }

  <b>with</b> sgImage1.Picture <b>do</b>
    Printer.Orientation := PO[Width > Height];
  <b>if</b> PrintDialog1.Execute <b>then
  begin</b>
    FStoredNullWidth := Img.NullWidth;
    Img.NullWidth := 3;
    <b>with</b> Printer, sgImage1.Picture <b>do
    begin</b>
      W := PageWidth / Width;
      H := PageHeight / Height;
      <b>if</b> W > H <b>then</b> W := H;
      PW := Round(W * Width);
      PH := Round(W * Height);
      BeginDoc;
      Canvas.StretchDraw(Bounds((PageWidth-PW) div 2, (PageHeight-PH) div 2, PW, PH), Graphic);
      EndDoc;
    <b>end</b>;
    Img.NullWidth := FStoredNullWidth;
    sgImage1.Repaint;
  <b>end</b>;
<b>end</b>;

Sergey.


please post questions to the forum or write to support@cadsofttools.com

[robelux]

Hi Sergey:

How can I define the font type SHX, in a entity TsgDXFText?.

sgImage1.LoadFromFile('C:\Test.dxf');
Img := TsgDXFImage(sgImage1.Picture.Graphic);
sgImage1.Align := alClient;
Ent := TsgDXFText.Create;
Ent.Point := Img.Extents.TopLeft;
Ent.Text := 'This is a test! This text has been added to a DXF file.';
Ent.HAlign := 2;
Ent.VAlign := 2;
Ent.Height := 50;
<font color="red"> <b>Ent.SHXFont := <-----------------READONLY PROPERTY </b></font id="red">

Thank You,
Roberto

[support]

Hi Roberto,

It is necessary to use <b>TsgDXFStyle</b> entity when changing font name for the <b>TsgDXFText</b> entity. Please use the following code:

Code: Select all

<b>procedure</b> TMyApp.Forum_276_Click(Sender: TObject);
<b>var</b>
  Ent: TsgDXFText;
  Img: TsgDXFImage;
  vTextStyle: TsgDXFStyle;
<b>begin</b>
  bUseSHXFonts := True;

  sgImage1.LoadFromFile('c:\test.dxf');
  Img := TsgDXFImage(sgImage1.Picture.Graphic);
  sgImage1.Align := alClient;

  vTextStyle := TsgDXFStyle.Create;
  vTextStyle.Name := 'styleGothice';
  vTextStyle.PrimaryFont := 'gothice.shx';
  Img.Converter.Loads(vTextStyle);

  Ent := TsgDXFText.Create;
  Ent.Point := Img.Extents.TopLeft;
  Ent.Text := 'This is a test! This text was added to a DXF file. Gothice.shx is used.';
  Ent.HAlign := 2;
  Ent.VAlign := 2;
  Ent.Height := 50;
  Ent.Style := vTextStyle;

  Img.Converter.Sections[csStyles].AddEntity(vTextStyle);
  Img.Converter.Sections[csEntities].AddEntity(Ent);
  if Assigned(Img.Converter.OnCreate) then
    Img.Converter.OnCreate(Ent);
  Img.Converter.Loads(Ent);

  Img.GetExtents;
<b>end</b>;

Sergey.

please post questions to the forum or write to support@cadsofttools.com