all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: Owen Taylor <otaylor@redhat.com>
Cc: emacs-devel@gnu.org
Subject: Re: Gtk scrollbar: thumb too short
Date: 07 Apr 2003 15:21:00 -0400	[thread overview]
Message-ID: <1049743260.15342.60.camel@localhost.localdomain> (raw)
In-Reply-To: <200304071902.h37J213q025315@rum.cs.yale.edu>

On Mon, 2003-04-07 at 15:02, Stefan Monnier wrote:
> > > > > IIUC, the scrollbar widget has the following:
> > > > > 
> > > > > 	total-size
> > > > > 	minimum thumb size
> > > > > 	thumb size
> > > > > 	thumb position
> > > > > 
> > > > > Where minimum-thumb-size is (for all intents and purposes here) a constant.
> > > > > Let's simplify things and subtract minimum thumb size from the current
> > > > > thumb size and from the total, we get:
> > > > > 
> > > > > 	total-size
> > > > > 	thumb size
> > > > > 	thumb position
> > > > >
> > > > > where
> > > > > 	
> > > > > 	0 <= thumb-size <= total-size
> > > > > 	thumb-size + thumb-position <= total-size
> > > > 
> > > > This isn't a "simplification", it is a different algorithm
> > > > from what GTK+ uses. The scrollbar thumb size in GTK+
> > > > is:
> > > > 
> > > >  MAX (min_size, total_size * document_page_size/document_size)
> > > 
> > > [ I assume that total_size = document_size to simplify the discussion ]
> > 
> > > So if min_size is 10, total_size is 100 and page_size is 1, how does
> > > the user get to see the last page ?
> > 
> > The 0-99 possible values for position in the document are mapped
> > linearly onto the 0-90 possible values for the position of the
> > slider thumb.
> 
> My point exactly:
> for all intents and purposes (other than actual drawing on
> the screen which you might care about but we don't), we can
> subtract 10 from all sizes and pretend the total_size is 90
> and minimum_size is 0 (and can thus be ignored).

The difference from your computations and the GTK+ computations
is that GTK+ only subtracts the minimum size from the total 
trough size, while you are also subtracting it from the thumb
size.

Regards,
                                         Owen

  reply	other threads:[~2003-04-07 19:21 UTC|newest]

Thread overview: 143+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-03-25 14:51 Gtk scrollbar: thumb too short Kai Großjohann
2003-03-25 18:54 ` Jan D.
2003-03-25 19:55   ` Stefan Monnier
2003-03-26 18:26     ` Jan D.
2003-03-26 19:07       ` Stefan Monnier
2003-03-27  3:29   ` Richard Stallman
2003-03-27 14:51     ` Stefan Monnier
2003-03-27 15:48     ` Owen Taylor
2003-03-27 16:30       ` Stefan Monnier
2003-03-27 21:07         ` Owen Taylor
2003-03-27 21:41           ` Stefan Monnier
2003-03-27 21:42           ` Luc Teirlinck
2003-03-27 21:41             ` Owen Taylor
2003-03-27 22:18               ` Luc Teirlinck
2003-03-27 22:46                 ` Jody Goldberg
2003-03-28  2:15               ` Luc Teirlinck
2003-03-28  4:28                 ` Owen Taylor
2003-03-28  6:07                   ` Luc Teirlinck
2003-03-29 18:38                     ` Richard Stallman
2003-03-28 13:35                   ` Stefan Monnier
2003-03-28 13:55                     ` Luc Teirlinck
2003-03-27 16:50       ` Andreas Schwab
2003-03-27 18:27         ` Jan D.
2003-03-27 20:54         ` Owen Taylor
2003-03-28  1:48           ` Miles Bader
2003-03-28  1:42       ` Miles Bader
2003-03-28  1:51         ` Miles Bader
2003-03-28 15:04           ` Kim F. Storm
     [not found]             ` <m21y0rruj4.fsf@primate.xs4all.nl>
2003-03-28 23:57               ` Kim F. Storm
     [not found]                 ` <m2wuijqdu3.fsf@primate.xs4all.nl>
2003-03-29  1:26                   ` Kim F. Storm
2003-03-31  7:52             ` Miles Bader
2003-03-31 11:04               ` Kim F. Storm
2003-03-28 12:43         ` Robert J. Chassell
2003-03-28 13:34           ` Luc Teirlinck
2003-03-28 15:11             ` Robert J. Chassell
2003-03-28 15:50               ` Luc Teirlinck
2003-03-28 13:38           ` Stefan Monnier
2003-03-28 16:18             ` Robert J. Chassell
2003-03-28 16:49               ` Stefan Monnier
2003-03-29 18:39             ` Richard Stallman
2003-03-29 18:43               ` Stefan Monnier
2003-03-28 15:20       ` Richard Stallman
2003-03-28 15:44         ` Owen Taylor
2003-03-28 18:25           ` Jan D.
2003-03-27 18:41     ` Jan D.
2003-03-28 15:21       ` Richard Stallman
2003-03-28 17:27         ` Owen Taylor
2003-03-30 19:24           ` Richard Stallman
2003-03-31 18:12             ` Owen Taylor
2003-03-31 22:06               ` Luc Teirlinck
2003-03-31 22:16                 ` Owen Taylor
2003-03-31 22:27                   ` Luc Teirlinck
2003-03-31 23:29                   ` Luc Teirlinck
2003-03-31 22:23               ` Robert J. Chassell
2003-04-01  0:28               ` Luc Teirlinck
2003-04-01 17:48                 ` Owen Taylor
2003-04-02  1:39                   ` Miles Bader
2003-04-02  2:30                   ` Luc Teirlinck
2003-04-01  9:38               ` Richard Stallman
2003-04-01 17:26                 ` Owen Taylor
2003-04-02  1:33                   ` Miles Bader
2003-04-02  3:30                     ` Luc Teirlinck
2003-04-02  3:55                       ` Miles Bader
2003-04-02  4:29                         ` Luc Teirlinck
2003-04-02  4:42                           ` Miles Bader
2003-04-02 11:07                           ` Kai Großjohann
2003-04-02 13:52                             ` Luc Teirlinck
2003-04-02 13:11                               ` Kai Großjohann
2003-04-02 14:42                                 ` Luc Teirlinck
2003-04-02 14:03                                   ` Kai Großjohann
2003-04-03 10:38                               ` Richard Stallman
2003-04-07 15:35                                 ` Owen Taylor
2003-04-07 16:57                                   ` Stefan Monnier
2003-04-07 18:30                                     ` Owen Taylor
2003-04-07 18:38                                       ` Stefan Monnier
2003-04-07 18:57                                         ` Owen Taylor
2003-04-07 19:02                                           ` Stefan Monnier
2003-04-07 19:21                                             ` Owen Taylor [this message]
2003-04-07 19:30                                               ` Stefan Monnier
2003-04-08  2:30                                   ` Richard Stallman
2003-04-08 14:56                                     ` Owen Taylor
2003-04-08 23:36                                       ` Miles Bader
2003-04-09  1:58                                       ` Richard Stallman
2003-04-09 14:46                                         ` Owen Taylor
2003-04-10  6:22                                           ` Richard Stallman
2003-04-10  6:48                                             ` Miles Bader
2003-04-11  8:51                                               ` Richard Stallman
2003-04-10 17:37                                             ` Jan D.
2003-04-11  8:51                                               ` Richard Stallman
2003-04-11 12:26                                                 ` Luc Teirlinck
2003-04-11 12:53                                                   ` Jan D.
2003-04-11 13:08                                                     ` Luc Teirlinck
2003-04-11 14:02                                                       ` Kai Großjohann
2003-04-11 14:28                                                         ` Stefan Monnier
2003-04-11 15:33                                                           ` Kai Großjohann
2003-04-12  3:02                                                             ` Luc Teirlinck
2003-04-12  8:56                                                               ` Kai Großjohann
2003-04-12 11:58                                                                 ` Miles Bader
2003-04-12 14:56                                                                 ` Luc Teirlinck
2003-04-12 14:58                                                                   ` Kai Großjohann
2003-04-13 11:22                                                                   ` Richard Stallman
2003-04-15  1:24                                                                     ` Luc Teirlinck
2003-04-15  1:31                                                                       ` Miles Bader
2003-04-15  1:42                                                                         ` Luc Teirlinck
2003-04-15  7:18                                                                       ` Kai Großjohann
2003-04-15 13:01                                                                         ` Luc Teirlinck
2003-04-16  4:39                                                                       ` Richard Stallman
2003-04-17  3:59                                                                         ` Luc Teirlinck
2003-04-17  4:09                                                                           ` Luc Teirlinck
2003-04-11 15:23                                                         ` Andreas Schwab
2003-04-11 16:30                                                           ` Kai Großjohann
2003-04-11 16:55                                                             ` Robert J. Chassell
2003-04-11 20:42                                                               ` Kai Großjohann
2003-04-11 21:33                                                                 ` Robert J. Chassell
2003-04-12  0:05                                                                 ` Miles Bader
2003-04-12  0:47                                                                   ` Luc Teirlinck
2003-04-12  2:11                                                                     ` Miles Bader
2003-04-11 19:09                                                           ` NEWS and invisible text Stefan Monnier
2003-04-14 23:09                                                             ` Kevin Rodgers
2003-04-21  0:59                                                               ` Richard Stallman
2003-04-11 16:36                                                         ` Gtk scrollbar: thumb too short Robert J. Chassell
2003-04-11 17:07                                                           ` Kai Großjohann
2003-04-11 17:46                                                             ` Luc Teirlinck
2003-04-11 21:13                                                             ` Robert J. Chassell
2003-04-12 17:07                                                         ` Richard Stallman
2003-04-11 13:12                                                     ` Luc Teirlinck
2003-04-11 16:13                                                     ` Robert J. Chassell
2003-04-12 17:07                                                   ` Richard Stallman
2003-04-10 17:33                                     ` Jan D.
2003-04-02 12:56                           ` Robert J. Chassell
2003-04-02 14:07                           ` Stefan Monnier
2003-04-03  1:34                             ` Miles Bader
2003-04-03 15:35                               ` Stefan Monnier
2003-04-02  9:19                   ` Richard Stallman
2003-03-28 18:12         ` Jan D.
2003-03-28 22:25           ` Robert J. Chassell
2003-03-28 22:35           ` Robert J. Chassell
2003-03-29 17:06             ` Jan D.
2003-03-26 16:47 ` Richard Stallman
2003-03-26 18:32   ` Jan D.
2003-03-27 19:04     ` Richard Stallman
2003-04-01 19:29 ` Kai Großjohann
     [not found] <200303271914.h2RJEdbL026474@stubby.bodenonline.com>
     [not found] ` <3E834774.6080604@swipnet.se>
     [not found]   ` <200303271904.h2RJ48b0029268@rum.cs.yale.edu>
2003-03-27 23:23     ` Stefan Monnier

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1049743260.15342.60.camel@localhost.localdomain \
    --to=otaylor@redhat.com \
    --cc=emacs-devel@gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.