docs/driver.rst
author Radek Brich <radek.brich@devl.cz>
Sun, 20 Jan 2013 00:49:19 +0100
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Drop Container.offset, add special layout for that - OffsetLayout. Add Widget.bring_up(): moves child to end of children list.
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Driver
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======
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Tuikit driver is the lowest part of the kit - it actually draws characters on screen,
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receives user events and forwards them to widgets.
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Any dirty details of actual graphical toolkit should be hidden by this driver.
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Though it's not hardware driver, nowhere near that. Tuikit driver is expected to use
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pretty high-level libraries, it's low-level only in Tuikit perpective.
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Currently there are three drivers: Dummy, Curses, SDL
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Dummy driver
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------------
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This driver shows and documents complete interface required from any driver.
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It does not draw anything and immediately emits keypress event for 'q' char and 'escape' key,
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which should exit application.
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All methods of dummy driver just report they where being called - into log file.
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Curses driver
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-------------
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Default driver for Text User Interface in any terminal supporting required features.
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Uses curses module from Python.
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SDL driver
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----------
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Creates graphical window and draws characters here. This has less limits than curses,
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we can use any colors, fonts and possibly even draw images.
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Though by default, it just emulates terminal with curses.
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SDL application is more portable than curses one, which means that Tuikit application
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using SDL driver may work in non-unix OS like Windows (does not currently,
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due to unconditional use of fontconfig).
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SDL driver requires sdlterm module for Python, which must be compiled from C++.
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See sdlterm directory in Tuikit distribution.
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