** checkButtonScaled **

'''Current Version: 1.21'''

[bll] 2016-05-10:  The standard [ttk::checkbutton] does not scale well for 4K displays.
This code is a pure tcl implementation of checkbuttons with no graphics.
It includes styling for all 22 themes.  I have attempted to match each
theme's styling reasonably well.  The package will change themes on a <<ThemeChanged>> event.

Place the package require in your code after tk scaling has been set.

Download from:

  https://gentoo.com/tcl/checkButtonScaled.tcl%|%https://gentoo.com/tcl/checkButtonScaled.tcl%|%

'''Version 1.21 ''' 2018-4-23
    * Add support for Mac OS X graphite color theme.

<<discussion>>Change Log

'''Version 1.20 ''' 2018-1-22
    * Remove bad code on trace unset.


'''Version 1.19 ''' 2018-1-6
    * Fixed scaling/display problems with the checkmarks.

'''Version 1.18 ''' 2017-9-14
    * Fixed issues with 'default' (et.al.) themes.

'''Version 1.17 ''' 2017-8-19
    * Changed to scale with the size of the configured font.  Since the font should be scaled up properly by tk scaling, this should work out ok.

'''Version 1.16 ''' 2016-8-16
    * Removed propagateBinds routine.  Binds placed on the main container are now executed properly.
    * Fixed focus state reporting.

'''Version 1.14 ''' 2016-7-4
    * Change spacer to be a frame
    * Better handle Mac OS X's crazy amount of extra label padding (fixed in 8.6.6).

'''Version 1.13 ''' 2016-7-2
    * Fixed focus issues.
    * Fixed highlight issues.
    * Fixed space bar toggle for tab-in.

'''Version 1.12 ''' 2016-6-14
    * keep disabled background color the same as the background color.

'''Version 1.11 ''' 2016-6-9
    * fixed trace on configure of same variable name.

'''Version 1.10 ''' 2016-6-3
    * improved efficiency
    * added changeColor proc - supports other background colors.
    * force theme change if it hasn't been done yet.

'''Version 1.9 ''' 2016-5-16
    * Clean up leftover default variables from the global namespace.

'''Version 1.8 ''' 2016-5-15
    * Fixed a problem with leftover traces.
    * Fixed destroy cleanup of variables.

'''Version 1.7 ''' 2016-5-11
    * Fixed scaling.
    * Improved size of indicator character.

'''Version 1.6 ''' 2016-5-10
    * Added propagateBinds routine
    * Handle -style option -- loads styling     * force theme change if it hasn't been done yet.from the ttk::style
    * Was missing -font
    * Fixed a bug for configure -variable

<<discussion>>

** Screenshot **

[Scaled-checkbutton-image]

** Discussion **

[dbohdan] 2016-05-12: The fact that you have a styling for each of the 22 themes is impressive.

Could you put a high-DPI screenshot of the widget on this page?

[bll]  2016-5-12:  Well, I actually don't have a 4K screen to test with.  But I can set a windows VM to 3840x2160 video mode.
Which I can then view in VirtualBox's scaled mode (it's quite horrible).  The image below was made with Window's 
snipping tool inside the VM with
[tk scaling] set to 2.67 (192 dpi).  Windows mentioned 192 dpi when I set the custom text size to 200%, so I used that number.
On the left is a standard [ttk::checkbutton], on the right is the scaled checkbutton.

[dbohdan] 2016-05-13: Looks good! I've moved the screenshot higher on the page.

<<categories>>Widget