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

[Martin C. <mar...@ei...>]

Hi Mark,

This would certainly be a useful addition. Does this approach allow you 
to have a different font for Connections versus Shapes. Also it can be 
useful to allow different shapes to use a different font. Your approach 
certainly looks like a very good starting point.
Just my 2 cent.

Regards,

Martin

Mark Johnson wrote:
> * *
> 
> * In the past, there were discutions about a Global Font support.*
> 
> * *
> 
> * 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'?*
> 
> * *
> 
> * Building in the proper Zooming and Colouring was not a problem, but 
> the Font was.*
> 
> * *
> 
> * Last month François and I again has a talk about this and came to no 
> conclusion.*
> 
> * *
> 
> * 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.*
> 
> * *
> 
> * The the main pain there was the commenly used Objects/Methods had to 
> be passed to each Frame*
> 
> *  apon creation.*
> 
> *  *
> 
> * 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.*
> 
> *  *
> 
> * 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).*
> 
> *  *
> 
> * 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.*
> 
> *  *
> 
> * Since Entity.Font was 'protected',  it could also not be changed 
> afterwards.*
> 
> *  *
> 
> * My suggestion is the following :*
> 
> *  *
> 
> * - one small Class in 'Netron.GraphLib' with static Fields*
> 
> *   - Font*
> 
> *   - and maybe others like CutureInfo for language support.*
> 
> * *
> 
> * - 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 = WinForm.Font; '*
> 
> *  *
> 
> * With Entity.InitEntity() changed to : *
> 
> *  *
> 
> *      // mFont = new 
> Font(mFontFamily,mFontSize,FontStyle.Regular,GraphicsUnit.Point);*
> 
> *      Font = NetronBase.Font;*
> 
> * *
> 
> * all Shapes / Connection etc. would use the desired Font.*
> 
> *  *
> 
> * If  Entity.Font was changed from 'protected' to 'internal'*
> 
> * *
> 
> *    internal Font Font*
> 
> *    {*
> 
> *     get{return this.mFont;}*
> 
> *     set*
> 
> *     {*
> 
> *      this.mFont = value;*
> 
> *      this.mFontFamily = value.FontFamily.ToString();*
> 
> *      this.mFontSize = value.Size;        *
> 
> *      RecalculateSize = true;*
> 
> *      this.Invalidate();*
> 
> *     }*
> 
> *    }*
> 
> *  - note added 'RecalculateSize = true;'  !*
> 
> * *
> 
> *  a Propery in the GraphControl for 'Font' could be written*
> 
> *   that could change the Font used at any time (i.e. Object allready 
> created) :*
> 
> *  *
> 
> *    [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 != null)*
> 
> *      {*
> 
> *       base.Font = value;*
> 
> *       NetronBase.Font = base.Font;*
> 
> *       foreach(Shape so in mAbstract.Shapes)*
> 
> *       {*
> 
> *        so.Font = base.Font;*
> 
> *        foreach(Connector co in so.Connectors)*
> 
> *        {*
> 
> *         co.Font = base.Font;*
> 
> *         foreach (Connection con in co.Connections)*
> 
> *         **{*
> 
> *          con.Font = 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 != null)*
> 
> *     } // Set*
> 
> *    }  // public override Font Font*
> 
> *  *
> 
> * With these changes, every thing works well with me after insuring that 
> NetronGraphControl*
> 
> *  uses the Parent.Font when recalulating it size.*
> 
> *  *
> 
> * All Shapes would have to be Font aware, but most are.*
> 
> * And if not, they should be changed.*
> 
> *  *
> 
> * If there are no objections to this I would like to commit the needed 
> changes to CVS.*
> 
> *  *
> 
> * **Mark Johnson, Berlin Germany *
> 
> * mj...@mj... <mailto:mj...@mj...>*
> 
> * *
> 
> *PS : I wish Windows would do the same, I allways hate changing to the 
> Fornt that I use 99,9999 % of the time … *
> 
> *  *
> 
> *  *
> 
> 
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