Re: [g-a-devel]Question regarding theme compliance

[Bill Haneman <Bill Haneman sun com>]

>Hi,
>From Bill's reply to my mail on theme compliance I came to know
>that the following high-contrast and low-contrast themes need to be
>supported in Gnome 2.0 :

Just to clarify, I didn't make this list...

I do think that providing both 'white-on-black'
and 'black-on-white' themes will be helpful in 
debugging theme compliance.  However in general 
a high-contrast theme cannot adhere strictly to
black-on-white, etc., and in fact I don't think
"black" and "white" are necessarily correct (they can
be colors with some hue).

A high-contrast theme should have "high contrast",
that is, use very high and very low "values"
(in the sense of hue-saturation-value) with few
middle values.  Some careful thought is required since
in GNOME we have a number of states that need to be
visually distinguishable from one another 
(i.e. SELECTED, PRELIGHT, NORMAL, etc.)
while maintaining high contrast.  I would not
suggest that we should use pure black or
pure white for all of these "dark" and "light"
colors.

Muktha is right that we should provide 
variants for which "normal" text is dark-on-light
as well as variants for which "normal" text is
"light on dark".

We also need low-contrast, which means no
extreme values of "value", and probably moderate
color saturation values as well.  "Regular" and
"large" size font variants should be provided for
this theme as well as the high contrast themes, as
Muktha suggests.

Regards,

-Bill

>White on Black with regular size fonts
>Black on White with regular size fonts
>White on Black with large fonts
>Black on White with large fonts
>
>Any other thoughts to add on theme compliance??
>
>Thanks 'n regards
>Muktha
>
>Bill Haneman wrote:
>
>> muktha wrote:
>> >
>> > Hi All,
>> > I'm looking into providing accessibility for some of the Gnome 2.0
>> > applications.
>> > As per my understanding, theme compliance is one of the requirements
>> > for accessibility.
>> >
>> > As far as I know the following are the 4 types of high-contrast themes
>> > that need to be tested for accessibility :
>> >
>> > White on Black with regular size fonts
>> > Black on White with regular size fonts
>> > White on Black with large fonts
>> > Black on Black with large fonts
>> >
>> > There are couple of things that I need clarification on :
>> > 1. Are there any other themes that need to be supported in GNOME 2.0 ?
>>
>> Yes, low-contrast themes need to be supported as well.
>>
>> -Bill
>>
>> > 2. How do I set these themes (through control-center ??) and test the
>> > applications??
>>
>> At the moment there is only one gtkrc-based theme of this sort
>> available,
>> though creating new ones using it as a template should be a very
>> straightforward
>> matter.
>>
>> I will attach the gtkrc file for the "high contrast large font" theme.
>>
>> -Bill
>>
>> > Thanks 'n Regards
>> > Muktha
>> >
>> >   ------------------------------------------------------------------------
>> >                                Name: InterScan_Disclaimer.txt
>> >    InterScan_Disclaimer.txt    Type: Plain Text (text/plain)
>> >                            Encoding: 7bit
>>
>>   ------------------------------------------------------------------------
>> # High-Contrast, Large Print Theme v0.1
>> # This is the whole basic theme, just this one gtkrc file.
>> # It uses components of the standard theme engine
>> # Written by Bill Haneman, based on Standard theme by T. Liebeck,
>> # which was in turn based on lots of different gtkrc files but
>> # primarily the one for the metal theme.
>> # email: bill haneman sun com
>>
>> pixmap_path  "/home/billh/gnome/gtk+/gtk/stock-icons"
>>
>> gtk-icon-menu-size = 32
>> gtk-icon-button-size = 32
>> gtk-icon-small-toolbar-size = 32
>> gtk-icon-large-toolbar-size = 48
>> gtk-icon-dnd-size = 48
>> gtk-icon-dialog-size = 64
>>
>> style "default"
>> {
>>   font_name = "sans 18"
>>
>>   GtkWidget::focus-line-pattern = "\10\2"
>>   GtkWidget::focus-line-width = 3
>>   GtkHSV::focus-line-pattern = "\0"
>>   GtkWidget::interior_focus = 1
>>   GtkWidget::focus-padding = 0
>>   GtkEntry::cursor_color    = { 0.80, 0.00, 0.00 }
>>   GtkRange::slider_width = 20
>>   GtkTreeView::expander_size = 20
>> #  GtkWidget::cursor_aspect_ratio = 0.1
>>   GtkTextView::cursor_aspect_ratio = 0.1
>>   GtkEntry::cursor_aspect_ratio = 0.1
>>
>>   fg[NORMAL]      = { 0.00, 0.00, 0.00 }
>>   text[NORMAL]      = { 0.00, 0.00, 0.00 }
>>   bg[NORMAL]      = { 1.00, 1.00, 1.00 }
>>   base[NORMAL]    = { 1.00, 1.00, 1.00 }
>>
>>   fg[INSENSITIVE]      = { 0.6, 0.6, 0.6 }
>>   bg[INSENSITIVE]      = { 0.75, 0.75, 0.77 }
>>   base[INSENSITIVE]      = { 0.75, 0.75, 0.77 }
>>
>>   fg[PRELIGHT]    = { 0.80, 0.80, 1.00 }
>>   text[PRELIGHT]    = { 0.80, 0.80, 1.00 }
>>   bg[PRELIGHT]    = { 0.00, 0.00, 0.00 }
>>   base[PRELIGHT]    = { 0.00, 0.00, 0.00 }
>>
>>   fg[ACTIVE]      = { 0.00, 0.00, 0.00 }
>>   text[ACTIVE]      = { 0.00, 0.00, 0.00 }
>>   bg[ACTIVE]      = { 0.65, 0.65, 0.50 }
>>   base[ACTIVE]      = { 0.65, 0.65, 0.50 }
>>
>>   fg[SELECTED]    = { 1.00, 1.00, 1.00 }
>>   text[SELECTED]    = { 1.00, 1.00, 1.00 }
>>   bg[SELECTED]    = { 0.00, 0.00, 0.00 }
>>   base[SELECTED]    = { 0.10, 0.20, 0.20 }
>>
>> }
>>
>> class "GtkWidget" style "default"
>

------
Bill Haneman x19279
Gnome Accessibility / Batik SVG Toolkit
Sun Microsystems Ireland