Posted by ClaudeQC on Jul 25, 2011; 4:04pm
URL: https://forum.librecad.org/Accent-support-on-fonts-tp4627948p4631340.html



On 25/07/2011 08:32, Rallaz [via LibreCAD] wrote:

 >
 > About AutoCAD (ACAD) text styles and fonts files.
 >
 > text styles in ACAD indicate the font file and the text height to use.
 >
 > ACAD have the STANDARD text style that is similar to layer 0, can not
 > be deleted.
 > In old ACAD versions the STANDARD style have the font "txt.shx" in
 > modern versions
 > the font is "arial.ttf".
 >
 > The above is applied in TEXT entities, for MTEXT change, can be drawn
 > with a
 > style, or directly to one or more fonts.
 >
 > In DXF text styles is a TABLE entry with code 3 indicating the font:
 > 0
 > STYLE
 > 2
 > STANDARD
 > 100
 > AcDbTextStyleTableRecord
 > 3
 > txt.shx
 >
 >
 > My opinion:
 >
 > When reading a DXF file LibreCAD should use text styles to find the font
 > used
 > by each entity text and use the most similar.
 >
 > Ideally, each text have to remember what font file is used (if not
 > exist in
 > LibreCAD) to is not lost when you save the DXF. If the text is created
 > or
 > modified in librecad no longer need to remember.
 >
 > For CXF files ALL should be drawing different and have the same
 > characters
 >
 > Files normal.cxf, normallatin1.cxf and normallatin2.cxf are identical
 > drawing
 > the chars but differs in numbrer of supported chars
 > I would erase normal and normallatin1 and rename normallatin2 to normal
 > but...(see normallatin1.readme)
 >


Hello Rallaz,

- You seem to know AutoCAD a lot.

- I do not known as much as you AutoCAD internal, but
   based on your explanations, will it be better to rename or copy
   normallatin2.cxf as txt.cxf.

- In LibreCAD, since there is no support for TTF fonts; apply a filter
   to the DXF font "arial.ttf", to make it processed using the
   "txt.cxf" font.

- This way, when "txt.shx" or/and "arial.ttf" will be used in a
   drawing, they will appear as defined in "txt.cxf".

- Additional fonts filters can be added to make all DXF
   fonts not supported by LibreCAD use the "txt.cxf" font !?
   Every time a new LibreCAD font will be added, that filter can be
   modified to use the new created font.

- Example:

        Font name in DXF LibreCAD font used
        ---------------- ------------------
        txt.shx txt.cxf
        arial.ttf txt.cxf
        ic-romans.shx romans.cxf
        ... ...


- Remarks:
        - I currently use IntelliCAD (by Autodsys), and it use "txt.shx"
          as the default font for the "STANDARD" text style.


Claude