[Netron-development] Solution to Font Problem (suggestion)

[Mark J. <mj...@we...>]

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 In the past, there were discutions about a Global Font support.

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 Last March, when I was doing a Praticum where I hoped to get a =
permanent
Job,

  I showed this Library ro the owner and the first question was 'can it
Zoom, change the Colours and Font'?

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 Building in the proper Zooming and Colouring was not a problem, but the
Font was.

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 Last month Fran=E7ois and I again has a talk about this and came to no
conclusion.

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 Yesterday, however (still having no Job), while preparing my Shape Demo =
to
work within the MDI-Application,

  I realized that the logic I used there would also solve the Problem =
here.

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 The the main pain there was the commenly used Objects/Methods had to be
passed to each Frame

  apon creation.

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 I then tried creating a Class in the Dll that stored Static Fields =
which
were filled upon

  Application start (Main-Form, MainMenu, StatusBar, Colours, Font, =
Project
Paths etc) and

  simply read out by the Forms that used the same Dll.

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 Calling an Application twice from the same /Bin using also the same Dll
(also in the same /Bin)

  created an Unique Version of the Static Class for each Application - =
which
meant that the

  first copy could change a static Field (in this case the Font) but =
this
would not effect

  the Value in the second Application (i.e. the Second Application would =
not
use the Font

   set by the first Application).

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 The problem here is that when a Shape is created it uses the default =
Font
set in Entity.cs.

  This could not be changed in a way that after a certin Point another =
Font
should be used.

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 Since Entity.Font was 'protected',  it could also not be changed
afterwards.

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 My suggestion is the following :

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 - one small Class in 'Netron.GraphLib' with static Fields

   - Font

   - and maybe others like CutureInfo for language support.

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 - When the Application calls the Dll for the first the Default value =
will
be set

   - for CutureInfo this would be that of the Machine called on.

   The Application could then change the default Values :

   - 'NetronBase.Font =3D WinForm.Font; '

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 With Entity.InitEntity() changed to :=20

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      // mFont =3D new
Font(mFontFamily,mFontSize,FontStyle.Regular,GraphicsUnit.Point);

      Font =3D NetronBase.Font;

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 all Shapes / Connection etc. would use the desired Font.

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 If  Entity.Font was changed from 'protected' to 'internal'

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    internal Font Font

    {

     get{return this.mFont;}

     set

     {

      this.mFont =3D value;

      this.mFontFamily =3D value.FontFamily.ToString();

      this.mFontSize =3D value.Size;       =20

      RecalculateSize =3D true;

      this.Invalidate();

     }

    }

  - note added 'RecalculateSize =3D true;'  !

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  a Propery in the GraphControl for 'Font' could be written

   that could change the Font used at any time (i.e. Object allready
created) :

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    [Category("Graph"), Browsable(true), Description("Gets or sets the =
Font
for the GraphControl and all Shapes and Connectors.")]

    public override Font Font

    {

     get

     {

      return base.Font;

     }

     set

     {

      if (value !=3D null)

      {

       base.Font =3D value;

       NetronBase.Font =3D base.Font;

       foreach(Shape so in mAbstract.Shapes)

       {

        so.Font =3D base.Font;

        foreach(Connector co in so.Connectors)

        {

         co.Font =3D base.Font;

         foreach (Connection con in co.Connections)

         {

          con.Font =3D base.Font;

         } // foreach (Connection con in co.Connections)

        }  // foreach(Connector co in so.Connectors)

       }   // foreach(Shape so in mAbstract.Shapes)

       // Will force all Controls to Paint with new Font

       Invalidate();

      }    // if (value !=3D null)

     } // Set

    }  // public override Font Font

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 With these changes, every thing works well with me after insuring that
NetronGraphControl

  uses the Parent.Font when recalulating it size.

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 All Shapes would have to be Font aware, but most are.

 And if not, they should be changed.

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 If there are no objections to this I would like to commit the needed
changes to CVS.

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 Mark Johnson, Berlin Germany=20

 mj...@mj...

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PS : I wish Windows would do the same, I allways hate changing to the =
Fornt
that I use 99,9999 % of the time =85=20

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