RE: Size of text in Flash?

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Andrew,
	Thanks for you suggestion but I still am not able to achieve the end
goal I seek. When you determined the size of the text, I assume you used
those boundaries for the text field.

	But how did you confirm the size of the box/bounds? 

	In my case what I am doing is creating a TextField, and trying to
calculate the size of the box based on the size of the chars. Once the
TextField's bounds have been set I am passing that TextField to a
function that turns it into a button. That function creates a button to
the exact bounds the TextField was set to.

	In all experiments/tests so far the box is either to big or to small.
When I do seem to have things working I change the text, and problems
again.

	For clarity I am including a test case I made so I could figure out the
ratio, or what I need to do. I am attaching it for others to see comment
on. You will see your suggestions commented out, not entirely, but
partially. Since I started with your suggestions and when it did not
work I elaborated on them.

On Wed, 2002-12-11 at 15:05, Andrew Watson wrote:
> I've conducted some brief tests on Flash with Arial font, and these calculations seem to hold true....
> 
> ratio = 1024 / point_size
> size_in_pixels = size_in_twips / ratio
> space_between_baselines = (ascent_in_twips + descent_in_twips) / ratio + line_space_in_points
> 
> For example, with Arial font, ascent is 927, descent is 217, and the height of a letter A is 733 (according to flash)
> so for size 16 Arial font, with a line_spacing of 2:
> 
> ratio = 1024 / 16 = 64
> height in pixels of a letter A = 733 / 64 = 11.45
> distance from the bottom of one A to the next = (927 + 217) / 64 + 2 = 19.875
> 
> I scaled this up 8 times, and it still held true, so even if it's not right, its pretty damn close.
> 
> Hope this helps
> 
> Andrew Watson
> 

-- 
Sincerely,
William L. Thomson Jr.
Support Group
Obsidian-Studios Inc.
439 Amber Way
Petaluma, Ca. 94952
Phone  707.766.9509
Fax    707.766.8989
http://www.obsidian-studios.com

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/** Study 1
 * @author  William L. Thomson Jr.
 * @company Obsidian-Studios Inc.
 * @version 1.0
 * @date April 7, 2002
 * @point To create a new swf place a textfield on the stage that shows the=
 current frame number
 */

package com.obsidian.studios.jgenerator.studies;

import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.io.*;
import java.util.*;
import com.iv.flash.api.*;
import com.iv.flash.api.action.*;
import com.iv.flash.api.button.*;
import com.iv.flash.api.shape.*;
import com.iv.flash.api.text.*;
import com.iv.flash.util.*;

public class Study_4 {


    private final int                           FONT_HEIGHT =3D 12;

    public static void main(String[] arg) {
        new Study_4();
    }
    public Study_4() {
        Util.init("/opt/jgenerator");
        /* Flash File */
        FlashFile flashFile =3D FlashFile.newFlashFile();                  =
       // create new flash file
        flashFile.setFrameRate(12);                                        =
     // set the flash frame rate
        Rectangle2D rectangle2d =3D flashFile.getFrameSize();              =
       // create a new rectangle2d
        rectangle2d.setFrame(0,0,Study.STAGE_WIDTH,Study.STAGE_HEIGHT);    =
     // set the rectangle2d frame size
        flashFile.setFrameSize(rectangle2d);                               =
     // set the flash frame size
        flashFile.setVersion(Study.VERSION);                               =
     // set the version of Flash

        /* Script */
        Script script =3D new Script(1);                                   =
       // create script with 1 frame
        script.setMain();                                                  =
     // make this the main script
        flashFile.setMainScript(script);                                   =
     // set main script for the file

        /* Frame */
        Frame frame =3D script.getFrameAt(0);
       =20
        /* Font*/
        Font font =3D FontDef.load("/opt/jgenerator/fonts/Arial.fft");     =
   // load flash font file into object
       =20
        /* TextField*/
        String text =3D "Next >>";
        double font_height =3D 0;
        double font_width =3D 0;
        double font_x =3D 0;
        double font_y =3D 0;
        double ratio =3D 1024/FONT_HEIGHT;
        char[] chars =3D text.toCharArray();
        for(int i=3D0;i<chars.length;i++) {
            int index =3D font.getIndex(chars[i]);
            Rectangle2D[] rect2d =3D font.getGlyphBounds();
            System.out.println("Char    =3D"+chars[i]);
            System.out.println("Ascent  =3D"+font.ascent);
            System.out.println("Descent =3D"+font.descent);
            System.out.println("Height  =3D"+rect2d[index].getHeight());
            System.out.println("Width   =3D"+rect2d[index].getWidth());
            System.out.println("Advance =3D"+font.getAdvanceValue(index));
           =20
            font_height =3D ((font.ascent+font.descent)/ratio)*20;
            //double height =3D (rect2d[index].getHeight()/ratio)*20;
            //if(height>font_height) font_height =3D height;
           =20
            font_width +=3D (rect2d[index].getWidth()/ratio+2)*20;
            //font_width +=3D (font.getAdvanceValue(index)/ratio+2)*20;
            //font_width +=3D ((font.getAdvanceValue(index)+rect2d[index].g=
etWidth())/ratio+2)*20;
            //font_width +=3D (font.ascent+font.descent)/ratio+2;
        }
        TextField textField =3D new TextField("<u>"+text+"</u>","p1",font,F=
ONT_HEIGHT*20,AlphaColor.blue);
        System.out.println("TextField Height =3D"+font_height);
        System.out.println("TextField Width  =3D"+font_width);
        textField.setBounds(GeomHelper.newRectangle(0,0,font_width,font_hei=
ght));
        //alignment (0-left,1-right,2-center,3-justify) rest in twixels
        //textField.setLayout(0,0,0,0,0);
        //textField.addFlags(TextField.BORDER);
        //textField.addFlags(TextField.HASFONT);
        //textField.addFlags(TextField.HASLAYOUT);
        //textField.addFlags(TextField.HASMAXLENGTH);
        //textField.addFlags(TextField.HASTEXT);
        //textField.addFlags(TextField.HASTEXTCOLOR);
        textField.addFlags(TextField.HTML);
        textField.addFlags(TextField.NOSELECT);
        textField.addFlags(TextField.READONLY);
        //textField.addFlags(TextField.USEOUTLINES);
        textField.setMaxLength(text.length());
       =20
        //font.printContent(System.out,"Indent?",textField.getID());
       =20
        /* TextField Instance */
        Button2 button2 =3D createButton(textField);
        //button2.addActionCondition(onRelease());
        Instance textFieldInstance =3D frame.addInstance(button2,2,AffineTr=
ansform.getTranslateInstance(0,0),null);
       =20
        /* Write SWF*/
        Study.writeSWF(flashFile,"/wlt/Temp/Study_4.swf");            // wr=
ite the
    }
    protected Button2 createButton(TextField text) {
        Button2 button2 =3D new Button2();
        int states =3D ButtonRecord.Up|ButtonRecord.Over|ButtonRecord.Down;=
                           // add the symbol to define the rest of the stat=
es
        button2.addButtonRecord(new ButtonRecord(states,text,1,AffineTransf=
orm.getTranslateInstance(0,0),CXForm.newIdentity(true)));
        Shape shape =3D new Shape();
        shape.setBounds(text.getBounds());
        shape.setFillStyle0(FillStyle.newSolid(new Color(0,0,0)));
        shape.drawRectangle(text.getBounds());
        button2.addButtonRecord(new ButtonRecord(ButtonRecord.HitTest,shape=
,2,AffineTransform.getTranslateInstance(0,0),CXForm.newIdentity(true)));
        button2.setTrackAs(Button2.TrackAsButton);
        return(button2);
    }
    protected ActionCondition onRelease() {
        Program program =3D new Program();
        program.push(Program.PROP_URL);
        program.getProperty();
        program.push("?start=3D10&stop=3D20&");
        program.addString();
        program.push("_blank");
        program.getURL(0);
        return(ActionCondition.onRelease(program));
    }
}

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