id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	field_blocks	field_dependson	field_seealso
719	Terminal resizing and scrolling	Vojtech Horky	Jiří Zárevúcky	"Add the ability to scroll through terminal output and resize the terminal window.

 Details::
  Terminal is still the main interface when working with HelenOS. Current implementation provides a fixed-sized window without an ability to scroll backwards through the history of output.

  The task is to extend the functionality of terminal with two most common features: scrolling to see output of commands that are no longer directly visible and the ability to resize the terminal window. The resizing must update contents of the terminal (e.g. wrap long lines) - current implementation extends/shrinks the area but not the contents itself.

  It is expected that the scrolling would be added as a separate feature of the widget library. Terminal resizing is then a specific feature of the terminal application.

  An optional extension might be implementing the resizing for TUI applications such as the editor.


 What Gains and Benefits will this bring?::
  While implementation of this features is not innovative from design perspective, it would greatly improve user experience. It is possible to use the terminal without these features but the control is cumbersome and ineffective.

 Difficulty::
  medium

 Required skills::
  A successful applicant will have good skills of programming in the C language and the ability to survive in a non-standard non-POSIX environment. Previous experience with a graphics stack implementation would be beneficial.

 Documentation::
  * [http://www.helenos.org/doc/theses/pk-thesis.pdf Graphics Stack for HelenOS]
  * [wiki:UsersGuide/GUI GUI's Users Guide]

 Possible mentors::
  HelenOS Core Team
"	enhancement	closed	major	0.16.1	helenos/gui	mainline	fixed	gsoc18, ui