diff options
| author | Albrecht Schlosser <albrechts.fltk@online.de> | 2018-12-10 16:50:56 +0100 |
|---|---|---|
| committer | Albrecht Schlosser <albrechts.fltk@online.de> | 2018-12-10 16:50:56 +0100 |
| commit | 745828154547e0dbd635afb9fae469eac37a255a (patch) | |
| tree | 98f5264fd76dbfa1d6c513a176903e83d6f179a1 /misc/README.txt | |
| parent | 810b91471761e3d1736ed79de06b4c8a69125b30 (diff) | |
Rename README files to README.txt (and several similar files).
Files without '.txt' suffix can't be handled well by Windows (users),
hence renaming such text files to *.txt makes FLTK more "Windows-friendly".
There are a few exceptions (this is intentional): README and other files
in bundled libraries (maintained upstream) are not changed.
Diffstat (limited to 'misc/README.txt')
| -rw-r--r-- | misc/README.txt | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/misc/README.txt b/misc/README.txt new file mode 100644 index 000000000..189aaf9b8 --- /dev/null +++ b/misc/README.txt @@ -0,0 +1,109 @@ +// +// $Id$ +// +// Miscellaneous files for developers: +// + +Developer files for testing UTF-8 character sets and functions: +================================================================================ + +Open these files in test/editor and compare the contents. + +Test scrolling, move the cursor over the "special" characters (> U+007F), +watch cursor movement, drawing artefacts, etc.. + +CAUTION: Do not 'cat' these files unless you know what you're doing. +Especially the cp1252* files can contain control characters that may freeze +your screen (xterm etc.). + +Detailed file description: + +The "native" encoded files contain 8-bit characters with binary values that +can be seen at the top and left borders, resp. (add both). They should look +like the image file (cp1252.png) on Windows only (if the current codepage is +"Western, CP 1252", a superset of ISO-8859-1). They will look different with +other codepages or on Linux, Unix, or Mac OS X. Use these files with FLTK 1.1 +or an editor with the corresponding codepage or locale. + +The UTF-8 encoded files should be usable with FLTK 1.3, FLTK 2, or FLTK 3 +(future). They contain UTF-8 encoded characters at the table positions, +where the corresponding ISO-8859-1, Windows copepage 1252, or Mac OS Roman +characters would be. They should look identical as the image file (cp1252.png) +or MacRoman_utf-8.png, resp., on all UTF-8 capable systems. + +The files with names iso-8859-1_* contain only the ISO-8859-1 subset, i.e. +the colums with character codes 0x80 - 0x9F (U+0080 - U+009F) are empty. + +Mac OS Roman is the Apple Mac native character set before it became Unicode +by default (OS X). The corresponding files are ordered as they would appear +with the native character set / encoding. + +The *.html files contain a character encoding meta tag, so that they should +be viewable with all standard browsers. They can be used for cut'n'paste and +drag'n'drop tests from a 'native' application (browser) to FLTK, e.g. +test/editor or test/input. + +Special Notes: + + 0x22 (U+0022: "quotation mark") is doubled intentionally. This has been + done for better results in test/editor, because otherwise the rest of the + file would be shown in blue color (as a comment). + + 0x98 (U+02DC: "small tilde") may not display correctly on Windows systems. + I saw the same effect with other Windows editors as well. The following + characters may be displayed "shifted left" by one position. Seems to work + correctly on Linux (with UTF-8 encoding). + + Mac OS Roman: 0xF0 (U+F8FF: "Apple logo") may not be printable, depending + on installed fonts on other systems. + + There may currently be drawing artefacts when moving the cursor forwards + and/or backwards over some "special" characters. + +References: + + http://unicode.org/Public/MAPPINGS/ISO8859/8859-1.TXT + http://unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT + http://unicode.org/Public/MAPPINGS/VENDORS/APPLE/ROMAN.TXT + http://en.wikipedia.org/wiki/Mac_OS_Roman + +Files: + +The first two files are images of how it should look: + + cp1252.png full Windows Codepage 1252 (Western) + MacRoman_utf-8.png full Mac OS Roman character set (w/o Apple logo) + +The following four files contain the full Windows Codepage 1252: + + cp1252.txt native (Windows) encoding, suitable for FLTK 1.1 + cp1252_utf-8.txt UTF-8 encoding, suitable for FLTK 1.3 and greater + cp1252.html native (Windows) encoding, use with any browser + cp1252_utf-8.html UTF-8 encoding, use with any browser + +The following two files contain only the ISO-8859-1 subset: + + iso-8859-1.txt native (Windows) encoding, suitable for FLTK 1.1 + iso-8859-1_utf-8.txt UTF-8 encoding, suitable for FLTK 1.3 and greater + +The following file contains the full Mac OS Roman character set: + + MacRoman_utf-8.txt UTF-8 encoding, suitable for FLTK 1.3 and greater + (use cp1252.txt with FLTK 1.1 on Mac OS instead) + +Other developer support files: +================================================================================ + + doxystar.cxx Use this to reformat doxygen comments (test only). + + Compile with: g++ -o doxystar doxystar.cxx + + Usage: cat file | doxystar + + DO NOT USE this for current code development! + + It is intended for testing of future code reformatting ! + +// +// End of $Id$. +// |
