Event enhancements in Shoes

[IanTrudel]

Some enhancements have been suggested in #383 to improve Shoes and empower Shoes users. Let's make a list of desirable events. Add your own suggestion here.

• Loading and closing App #383 / @ccoupe
• Manipulating window (resizing, minimize, maximize and such) #372, #370 / @dredknight

Shoes.app do
   resize do
      para "user has resized the window.\n"
      # rescale the app accordingly
   end
end

• keypress doesn't handle non-modifier combination keys #47

[IanTrudel]

We might consider the global event manager would handle keypress multiple keys and modifiers problem #47. Perhaps keypress block would pass an array containing all the key pressed at once, e.g. [control, alt, a], [control, shift, alt, w], [up, down], etc. This may require to ensure a consistent order to allow easy comparisons. Or we might consider updating the current keypress to handle multiple keys at the same time, such as up_left, down_right, etc.

irb(main):002:0> [:control, :shift, :alt, :w].join("_") => "control_shift_alt_w"

[ccoupe]

Going to need some help with OSX: deprecated. I'm starting to really hate that word. https://developer.apple.com/documentation/appkit/nsevent/modifier_flags?language=objc

[IanTrudel]

The good news is that it is not a priority and we might get away with updating the current keypress event. We might want to come up with a use case or stress test because it seems keypress on FreeBSD is working better than on Windows, e.g. some modifier combinations may not be handled on Windows.

[ccoupe]

I suspect it's the apple manual entry thats being deprecated. On osx you get 5 modifiers. Internally I'll map to a Shoes C enum and expand shoes_app_click, shoes_app_motion and shoes_app_release with an extra parameter for the enum.

For shoes_app_keypress() , osx maps to the 3 that gtk uses. See KEY_STATE macro in config.h. Perhaps, there is an existing way the cmd,ctl,alt or an easy way.

[ccoupe]

We might consider the global event manager would handle keypress multiple keys and modifiers problem #47 ...

Very unlikely. Huge platform and hardware dependencies. Secondly what you think the global event manager does, should it exist, is different from mine.

[IanTrudel]

Updating suggested code for resize event. A similar event could be available for when a window is moved around (with left and top parameters).

Shoes.app do
   resize do |width, height|
      para "user has resized the window with new size #{width}@#{height}.\n"
      # rescale the app accordingly
   end
end