[PATCH] Support for lazy-loading of metrics file

[SASAKI Suguru <s-...@hkg.odn.ne.jp>]

Hi.

Current Fop loads all font metrics files in startup , even if
corresponding fonts are not used in FO document. This wastes
memory and time, when not all registered fonts are used in FO
(that is, I guess, almost always). So, metrics files should be
lazy-loaded.

In Attatched patch, lazy-loading in PDFRenderer is implemented.
 Changes:
  1. add org/apache/fop/render/pdf/fonts/LazyFont.java
     (wrapper for Multi/SingleByteFont)
  2. In startup, add LazyFont to FontInfo.
     When metrics file is needed, LazyFont loads it automatically.
     When embeding font, get "real" font (Multi/SingleByteFont)
     instance thorough LazyFont.getRealFont() and output as before.

Regards.

=======
SASAKI Suguru
  mailto : s-sasaki@hkg.odn.ne.jp

Re: [PATCH] Support for lazy-loading of metrics file

[Keiron Liddle <ke...@aftexsw.com>]

Looks fine to me. So I have committed it (with some minor modifications).

Good stuff.

On Sun, 05 Aug 2001 09:14:55 SASAKI Suguru wrote:
> 
> Hi.
> 
> Current Fop loads all font metrics files in startup , even if
> corresponding fonts are not used in FO document. This wastes
> memory and time, when not all registered fonts are used in FO
> (that is, I guess, almost always). So, metrics files should be
> lazy-loaded.
> 
> In Attatched patch, lazy-loading in PDFRenderer is implemented.
>  Changes:
>   1. add org/apache/fop/render/pdf/fonts/LazyFont.java
>      (wrapper for Multi/SingleByteFont)
>   2. In startup, add LazyFont to FontInfo.
>      When metrics file is needed, LazyFont loads it automatically.
>      When embeding font, get "real" font (Multi/SingleByteFont)
>      instance thorough LazyFont.getRealFont() and output as before.
> 
> Regards.
> 
> =======
> SASAKI Suguru
>   mailto : s-sasaki@hkg.odn.ne.jp


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