I'm developing a Windows WPF app that needs to edit a certain type of document and I need a highly customized editor to do so:
The text is a transcription of an audio feed, and I need to sync the the text with a time code of the corresponding word in the audio stream (red numbers on left). This may involve breaking text not at a carriage return (not actually present in my text), but based on a custom timing algorithm (as shown).
I also want custom cursor logic, for instance, having
CTRL + -> jumping ahead 10 seconds at a time (however many letters that may be). I will also need to format individual words and phrases in various ways.
My question is: do I build from scratch or enhance an existing text editor (TextBox, RichTextBox, FlowDocument, etc.)?
If I use an existing control, I will get powerful features built in, but may run into design limitations--such as default line breaking--that will make it difficult to implement my requirements, or at least I may have to fight the default implementation.
If I roll my own low level control, I have total control but I have to implement everything myself.
How shall I make this decision?