Solved

Wrap text using Image.Picture.Canvas method

Posted on 2006-06-17
3
1,458 Views
Last Modified: 2011-10-03
Hi How can i wrap a paragraph using TextOut Command? or if you have any other good suggestion i'll really appriciate to know.  Here's my procedure below. The line   image.Picture.Bitmap.Canvas.TextOut(112  , 200 , _oTable.fieldbyname('ALLERGIE').asstring); contains a text field which i want to display in a wrap manner.

Thanks in advance

procedure TfDiagnosePatient.DrawPageLabelsPatientRecord2(image:TImage;_oTable:TTable);
var
 x, y  :Integer;
begin
 Try
  x:=0;
  y:=0;

  image.Picture.Bitmap.Canvas.Font.nAME:= 'Arial';
  image.Picture.Bitmap.Canvas.Font.Style:= [fsBold];
  image.Picture.Bitmap.Canvas.Font.Size := 14;
  image.Picture.Bitmap.Canvas.TextOut(16  , 152 , 'More Information');

  image.Picture.Bitmap.Canvas.Font.Size := 10;
  image.Picture.Bitmap.Canvas.Font.Style:= [];
  image.Picture.Bitmap.Canvas.TextOut(32  , 184 , 'Blood Type');
  image.Picture.Bitmap.Canvas.Font.Style:= [fsBold, fsUnderLine];
  image.Picture.Bitmap.Canvas.TextOut(112  , 184 , _oTable.fieldbyname('BLOODTYP').asstring);

  image.Picture.Bitmap.Canvas.Font.nAME:= 'Arial';
  image.Picture.Bitmap.Canvas.Font.Style:= [fsBold];
  image.Picture.Bitmap.Canvas.Font.Size := 12;
  image.Picture.Bitmap.Canvas.TextOut(16  , 224 , 'Allergies');
  image.Picture.Bitmap.Canvas.Font.Style:= [];
  image.Picture.Bitmap.Canvas.Font.Size := 10;
  image.Picture.Bitmap.Canvas.TextOut(112  , 200 , _oTable.fieldbyname('ALLERGIE').asstring);


  image.Picture.Bitmap.Canvas.Font.Style:= [fsBold,fsItalic];
  image.Picture.Bitmap.Canvas.Font.nAME:= 'MS Sans Serif';
  image.Picture.Bitmap.Canvas.Font.Size := 8;
  image.Picture.Bitmap.Canvas.TextOut(16  , 712 , 'Printed on '+formatdatetime('MMMM DD, YYYY  HH:MM:SS am/pm',NOW));
end;
0
Comment
Question by:ryan_sabarre
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 

Author Comment

by:ryan_sabarre
ID: 16927081
Thanks in advance
0
 
LVL 17

Accepted Solution

by:
TheRealLoki earned 50 total points
ID: 16931527
Youcan use the "DrawText" method with DT_WORDBREAK
If you don't wish to, or it's too complicated, then here's a simple demo I wrote which does just wordwrapping without using the DrawText method

procedure WordWrapTextOut(canvas: TCanvas; var x, y: integer; S: string; maxwidth, lineheight: integer);

implementation

{$R *.dfm}


procedure TForm1.FormCreate(Sender: TObject);
begin
  image1.picture.bitmap.Width := image1.width;
  image1.picture.Bitmap.Height := image1.height;
  image1.picture.Bitmap.Canvas.Brush.color := clBlack;
  image1.picture.Bitmap.Canvas.Fillrect(RECT(0,0,image1.picture.bitmap.Width,image1.picture.bitmap.Height));
  image1.picture.Bitmap.Canvas.Font.Color := clWhite;
end;

{ This will start drawing text from x, y. If it goes past maxwidth, it will drop to next line.
At the end of this routine, x and y will be at the position just past the end of the text}
procedure WordWrapTextOut(canvas: TCanvas; var x, y: integer; S: string; maxwidth, lineheight: integer);
  const
    delims = ' ,.:;?!';
  var
    textw, texth, tempw: integer;
    firststring, secondstring: string;
    i: integer;
  begin
    firststring := s;
    while firststring <> '' do
    begin
      secondstring := '';
      textw := canvas.TextWidth(firststring);
      while (
              (firststring <> '') and  (textw > maxwidth)
            ) do
      begin
        secondstring := firststring[length(firststring)] + secondstring;
        delete(firststring, length(firststring), 1);
        tempw := canvas.TextWidth(firststring);
        if ( (tempw <= maxwidth) and  (pos(firststring[length(firststring)], delims) > 0) ) then
          textw := tempw;
      end;
// searching for delimiter failed. fall back to wrap at last char
      if firststring = '' then
      begin
        firststring := secondstring;
        secondstring := '';
        textw := canvas.TextWidth(firststring);
        while ( (textw > maxwidth) and (length(firststring) > 0) ) do
        begin
          secondstring := firststring[length(firststring)] + secondstring;
          delete(firststring, length(firststring), 1);
          textw := canvas.TextWidth(firststring);
        end;
      end;
// actually draw some text
      canvas.TextOut(x, y, firststring);
      firststring := secondstring;
      if firststring <> '' then
      begin
        y := y + lineheight;
      end;
    end;
// get the position right in case the user wishes to add some more text to this line
    x := x + textw;
  end;

procedure TForm1.Button1Click(Sender: TObject);
var
  x, y: integer;
  lineheight: integer;
begin
  x := 0;
  y := 0;
  lineheight := image1.picture.Bitmap.Canvas.TextHeight('W') + 1; // 1 space between lines
  WordWrapTextOut(image1.picture.Bitmap.Canvas, x, y, 'short line', image1.picture.bitmap.width, lineheight);
  WordWrapTextOut(image1.picture.Bitmap.Canvas, x, y, ' plus this', image1.picture.bitmap.width, lineheight);
// next line
  x := 0;
  y := y + lineheight;
  WordWrapTextOut(image1.picture.Bitmap.Canvas, x, y, 'this is a bigger line which should word wrap', image1.picture.bitmap.width, lineheight);
// next line
  x := 0;
  y := y + lineheight;
  WordWrapTextOut(image1.picture.Bitmap.Canvas, x, y, memo1.lines.text, 200, lineheight);
end;

0
 

Author Comment

by:ryan_sabarre
ID: 16977618
Thanks a lot.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
In this tutorial I will show you how to use the Windows Speech API in Delphi. I will only cover basic functions such as text to speech and controlling the speed of the speech. SAPI Installation First you need to install the SAPI type library, th…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…
Suggested Courses
Course of the Month7 days, 19 hours left to enroll

617 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question