next up previous contents
Next: The HTXT/HT89/HT92 file implementations Up: Formatted text drawing engine Previous: The link   Contents


The HTXT format

The idea of the HTXT format is to make faster the load of a text. This will be a format of a Ti-OS variable which will be saved as any other TEXT file, but not editable. In fact, it will be an "image" of every object generated during the pass. So, in this format, there will be the table of !h_Object!, the table of !h_Bookmark!, etc... and the initial text with every character of format (!#1!, !#U!, !&E!,...) removed (they become useless).

The problem is that the second pass is calculator dependant. So the HTXT format will be generated by the first pass, and it will need the second pass to really draw the formatted text.

By the way, we can imagine two more formats, which be the HT89 and the HT92 format, which will be calculator dependant (in fact size-screen dependant). To continue in this idea, a large screen calculator (Ti92+ or V200) will be able to read a HT89 file, and a small screen calculator (Ti89) will read the HT92 with the possibility to scroll horizontally.

Yet, theses functionnalities are partially implemented, and the folowing specifications can change.



Subsections
next up previous contents
Next: The HTXT/HT89/HT92 file implementations Up: Formatted text drawing engine Previous: The link   Contents
2006-02-19