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kovidgoyal · 10-31-2013, 09:07 AM

I decided to go with QPlainTextEdit, frankly, none of the three choices were any good, even the most basic thing -- syntax highlighting -- was inadequate, so I realized I'd have to build my own. Which meant QPlainTextEdit.

Attached is a screenshot of what I have so far. The colors are fully themeable.

Some nice features that were not present in any of the three choices:

1) Line numbers with current line highlighting in the numbers column
2) Themeablity
3) Decent syntax highlighting. Notice in the screenshot how:

- CSS inside HTML <style> tags is highlighted
- Invalid HTML is detected with a red underline and a tooltip telling you what is wrong
- non-breaking spaces are highlighted with a slightly different background
- The contents of title, heading, bold and italics tags are rendered using the appropriate bold/italic fonts
- Namespace prefixes are highlighted

Since I'd never built an editor before, this was a fun learning experience

10-31-2013, 09:07 AM	#40
kovidgoyal creator of calibre Posts: 45,409 Karma: 27757236 Join Date: Oct 2006 Location: Mumbai, India Device: Various	I decided to go with QPlainTextEdit, frankly, none of the three choices were any good, even the most basic thing -- syntax highlighting -- was inadequate, so I realized I'd have to build my own. Which meant QPlainTextEdit. Attached is a screenshot of what I have so far. The colors are fully themeable. Some nice features that were not present in any of the three choices: 1) Line numbers with current line highlighting in the numbers column 2) Themeablity 3) Decent syntax highlighting. Notice in the screenshot how: - CSS inside HTML <style> tags is highlighted - Invalid HTML is detected with a red underline and a tooltip telling you what is wrong - non-breaking spaces are highlighted with a slightly different background - The contents of title, heading, bold and italics tags are rendered using the appropriate bold/italic fonts - Namespace prefixes are highlighted Since I'd never built an editor before, this was a fun learning experience Attached Thumbnails Last edited by kovidgoyal; 10-31-2013 at 09:09 AM.