There are a few exclusive operations for each type. Also we no longer
need the freeWhenDone flag since the class now determines whether the
surface should be freed or not.
This is the convention that most classes stick to. The likely reason
why Dialog didn't stick to the convention was to be able to provide
a default value for this argument, but that feature wasn't very useful
since every caller already had access to the default surface.
Setting values are now displayed 10 pixels to the right of setting names, as
passed to MenuSetting::draw.
This commit also contains the following cleanups:
* The height of a row is passed to MenuSetting's draw and touchscreen methods.
* MenuSettingRGBA's magic constant (36) to separate the text for a color's
four components is now a named constant.
* MenuSettingRGBA's color preview squares are now rowHeight - 2 pixels tall,
and have a white border surrounded by a black border to help view the color
it contains in both light and dark themes.
* The rectangle behind the selected setting's name is now drawn by that
setting's drawSelected method.
In well-described fonts, this enables multi-line text (e.g. in manuals) to be
more readable.
The term "height" is also replaced with "line spacing" in Font's code.
The scroll bar always spans the content area of the screen: the
position and height depend only on the theme and not on who is
drawing it.
Note that the coordinates passed were wrong in most cases, so this
commit fixes the scroll bar positioning for several dialogs.
Initialize in constructor and clean up in destructor instead of having separate init() and deinit() methods.
Don't close file descriptor if open failed (ts_fd == -1).
Renamed initialized() to available(), since it tests whether the touch screen was found, not whether an initialization was attempted.
Improved code layout and minor other cleanups.
There was a lot of gp2x-specific code which was built for
all platform. For instance, the code was compiled for all
the platforms with the constant "TARGET_GP2X" defined.
This obviously had to be fixed.
Instead of having the copy constructor convert to display format, the new
copy constructor preserves the pixel format and a separate method was
introduced to convert surfaces to display format.
The code was made more robust as well: it should no longer crash if the
wallpaper cannot be loaded.
