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Re: [GITGRUB] New menu interface (implementation)

From: Bean
Subject: Re: [GITGRUB] New menu interface (implementation)
Date: Mon, 21 Sep 2009 22:56:10 +0800

On Mon, Sep 21, 2009 at 5:16 PM, Michal Suchanek <address@hidden> wrote:
> 2009/9/20 Bean <address@hidden>:
>> On Sun, Sep 20, 2009 at 4:30 PM, Michal Suchanek <address@hidden> wrote:
>>> So the text region is intended for drawing on text screen and the
>>> graphics region on graphics screen. I assume the check for pure text
>>> mode is there to choose which one is used.
>>> However, wouldn't this switch in coordinate system complicate further
>>> extending of the menu system with additional components?
>>> With these different coordinates every compound component would likely
>>> have to check which kind of rectangle is currently in use.
>>> Still it might work - borders have to be drawn differently, pictures
>>> currently don't work, and alignment should work with any units (and
>>> it's easier to see rounding errors if the units are large).
>>> There is slight issue with element placement, though, If somebody uses
>>> pixel coordinates for placing elements then the offsets will suddenly
>>> become huge in text mode. Shouldn't the layouts be more portable?
>> Hi,
>> I'm thinking about using the "c" unit as default, as it's usable in
>> both text and graphic mode, this would help to create portable config
>> file. If user really want to use pixel unit, he can add "p" suffix,
>> such as 100p.
> What does c mean in graphics mode? I can see that in text mode it's
> one character cell in either direction but there is no such thing in
> graphics mode be cause different fonts and even different letters of
> the same font have different character cells.
> What would be especially confusing when using such a unit is that most
> fonts (except perhaps CJK) have different character width and height
> so does this mean the average (maximum, ,,) width of a character,
> height of a character, or a different thing depending on the direction
> in which the unit is used (vertical, horizontal)?


In graphic mode, 'c' unit is the width/height of the reference
character ( I use 'O' as reference character in menu_test.c) using
system default font, this ensure that 1c is always the same size in
the current system.


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