Certainly, an argument in favor of using these hot-keys is
user-expectations -- they seem pretty common for this function across
multiple apps..   Hmm..

Ability to adjust our hot-keys is another excuse to make #systemSettings...

On Wed, Jan 18, 2017 at 11:37 AM, Chris Muller <asqueaker at gmail.com> wrote:
> Thank you, I really like this function to adjust all the fonts at
> once.  However, hot keys are *really* scarce, and this function
> consumes three of the remaining four with a function that won't
> be used on a ad-hoc basis.
>
> In a web browser which displays pages from all different sources
> written by different people in different font sizes, yes, the user
> will need to adjust font size dynamically, depending on the page being
> viewed.  But in the Squeak image, *all* the windows render in the same
> uniform font size, so there's no need to do a lot of increasing /
> decreasing on a dynamic basis.  I really like this function, but think we
> should activate it with + and - buttons on the Font menu or something
> like that.  Available hot keys, especially for global operations, are
> too scarce for an operation that is so rarely invoked.
>
> Best,
>   Chris
>
>
> On Wed, Jan 18, 2017 at 3:06 AM,  <commits at source.squeak.org> wrote:
>> Tim Felgentreff uploaded a new version of System to project The Trunk:
>> http://source.squeak.org/trunk/System-tfel.923.mcz
>>
>> ==================== Summary ====================
>>
>> Name: System-tfel.923
>> Author: tfel
>> Time: 18 January 2017, 10:05:39.926932 am
>> UUID: d9dcb1e9-52fe-435e-9d88-96f921f9fd20
>> Ancestors: System-ul.922
>>
>> add methods to quickly increase/decrease fonts
>>
>> =============== Diff against System-ul.922 ===============
>>
>> Item was added:
>> + ----- Method: Preferences class>>changeFontSize: (in category 'prefs - fonts') -----
>> + changeFontSize: delta
>> +       | theme base fonts |
>> +       delta = 0 ifTrue: [self restoreDefaultFonts].
>> +       (UserInterfaceTheme current name beginsWith: 'Demo')
>> +               ifFalse: [
>> +                       "Create DEMO version of current theme."
>> +                       theme := UserInterfaceTheme named: 'Demo'.
>> +                       theme merge: UserInterfaceTheme current overwrite: true.
>> +                       theme apply].
>> +
>> +       base := (TextStyle defaultFont name beginsWith: 'Darkmap')
>> +               ifTrue: ['Darkmap DejaVu Sans'] ifFalse: ['Bitmap DejaVu Sans'].
>> +
>> +       fonts := {
>> +               {#SystemFont. base}.
>> +               {#FixedFont. 'BitstreamVeraSansMono'}.
>> +               {#ListFont. base}.
>> +               {#FlapFont. base}.
>> +               {#EToysFont. base}.
>> +               {#PaintBoxButtonFont. base}.
>> +               {#MenuFont. base}.
>> +               {#WindowTitleFont. base, ' B'}.
>> +               {#BalloonHelpFont. base}.
>> +               {#CodeFont. base}.
>> +               {#ButtonFont. base}.
>> +       } collect: [:ary || newPtSize |
>> +               newPtSize := (self perform: ('standard', ary first) asSymbol) pointSize + delta.
>> +               {('set', ary first, 'To:') asSymbol. ary second. newPtSize}
>> +       ].
>> +       self setDefaultFonts: fonts.
>> + !
>>
>> Item was added:
>> + ----- Method: Preferences class>>decreaseFontSize (in category 'prefs - fonts') -----
>> + decreaseFontSize
>> +
>> +       self changeFontSize: -3.
>> + !
>>
>> Item was added:
>> + ----- Method: Preferences class>>increaseFontSize (in category 'prefs - fonts') -----
>> + increaseFontSize
>> +
>> +       self changeFontSize: 3.
>> + !
>>
>> Item was added:
>> + ----- Method: Preferences class>>setFlapFontTo: (in category 'prefs - fonts') -----
>> + setFlapFontTo: aFont
>> +
>> +       UserInterfaceTheme current
>> +               set: #standardFlapFont
>> +               to: aFont;
>> +               apply.
>> +
>> +       "FlapTab allSubInstancesDo:
>> +               [:aFlapTab | aFlapTab reformatTextualTab]"!
>>
>> Item was added:
>> + ----- Method: Preferences class>>standardWindowTitleFont (in category 'prefs - fonts') -----
>> + standardWindowTitleFont
>> +       "Answer the standard font to use for window titles"
>> +
>> +       ^ (UserInterfaceTheme current get: #windowTitleFont)
>> +               ifNil: [TextStyle defaultFont]!
>>
>>