[issue17642] IDLE add font resizing hot keys and wheel

[Tal Einat]

Change by Tal Einat :


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[issue17642] IDLE add font resizing hot keys and wheel

[Zackery Spytz]

Change by Zackery Spytz :


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[issue17642] IDLE add font resizing hot keys and wheel

[Terry J. Reedy]

Terry J. Reedy  added the comment:

#33397 add a FontSizer class to textview.py and uses it there and for the doc 
viewer in help.py.  It should be used for this issue also.

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[issue17642] IDLE add font resizing hot keys and wheel

[Zackery Spytz]

Change by Zackery Spytz :


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pull_requests: +16613
pull_request: https://github.com/python/cpython/pull/17107

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[issue17642] IDLE add font resizing hot keys and wheel

[Terry J. Reedy]

Terry J. Reedy  added the comment:

I want this too, and part of it should be simple.  Given that I have had a 
never empty backlog of PRs to review for 2 1/2 years, it got forgotten.  There 
was also a tk problem that seemed to block implementation.

Specification for hotkey: Cntl/Cmd - -+= decrease/increase font size within 
limits in the current window only.  (The current limits for turtledemo are 6 
and 100.  Change this?  The keys are fixed and cannot be customized. Keys have 
no affect on IdleConf.  Setting font size in dialog continues to set font size 
for all Windows, whether individually set or not.  Should work same for editor 
and text (read-only) windows.

As near as I can tell, these key combinations currently do nothing.  I presume 
they are not bound in the built-in keysets.  Custom keysets are always subject 
to interference when we add new key bindings.  (I don't know that the custom 
key dialog checks against such fixed builtins. Another issue.  Checking custom 
keysets on import is likely a third issue.)

Implementation for hotkey: The desired behavior is the behavior of turtledemo, 
so the same implementation should work.  It is annoying that we need to add it 
separately for editor and text windows.  But refactoring to create a common 
base class would be a lot harder. 

Mousewheel: Currently, in turtledemo, control-wheel changes size on all 
systems.  

Raymond: Should it be cmd-wheel on Mac?

In msg226328 I reported a tk issue blocking both this and line numbers.  We now 
deliver 3.7.4 and 3.8.0 with tk 8.6.9.  We have line numbers because I no 
longer saw the glitchy behavior I remember.  Nor did I see any issue with font 
resizing with turtledemo.

I may include the module browser, etc, with this issue.  Dialogs would be 
another issue.

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[issue17642] IDLE add font resizing hot keys and wheel

[Raymond Hettinger]

Raymond Hettinger  added the comment:

> Key or wheel patches will probably be 3.6 only.

I still have hopes that this will happen.

Am I correct in thinking that it wouldn't be difficult to map CMD-plus and 
CMD-minus (or for Windows Cntl-plus and Cntl-minus) to a function that 
increases or decreases the font-size without having to manually go to 
Preferences/FontsAndTabs?

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versions: +Python 3.8, Python 3.9 -Python 2.7, Python 3.5, Python 3.6

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[issue17642] IDLE add font resizing hot keys and wheel

[Terry J. Reedy]

Terry J. Reedy added the comment:

I intend to backport the simple list expansion to 3.5.  Key or wheel patches 
will probably be 3.6 only.

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[issue17642] IDLE add font resizing hot keys and wheel

[Roundup Robot]

Roundup Robot added the comment:

New changeset f478f9b88319 by Terry Jan Reedy in branch '2.7':
Issue #17642: add larger font sizes for classroom projection.
https://hg.python.org/cpython/rev/f478f9b88319

New changeset c9d59e6cc1e4 by Terry Jan Reedy in branch 'default':
Issue #17642: add larger font sizes for classroom projection.
https://hg.python.org/cpython/rev/c9d59e6cc1e4

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[issue17642] IDLE add font resizing hot keys and wheel

[Terry J. Reedy]

Terry J. Reedy added the comment:

https://stackoverflow.com/questions/39155656/i-need-bigger-font-in-python-idle/39156068#39156068
 is about getting a larger font size than 22 for classroom projection.  I think 
configdialog.py should be extended something as follows (about line 1000).

self.optMenuFontSize.SetMenu(('7', '8', '9', '10', '11', '12', '13',
  '14', '16', '18', '20', '22',
  '25', '30', '35', '40'), fontSize )
 
I think any new key or wheel should change by 1 over a large range rather than 
being constrained to the values on the list.  I will try to look at the patches 
before 3.6.  Tests should also be added.

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assignee: roger.serwy -> terry.reedy
stage: needs patch -> patch review
title: IDLE add font resizing hot keys -> IDLE add font resizing hot keys and 
wheel
versions: +Python 3.6 -Python 3.4

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