Bogue.TriggerSourceDealing with events.
Events are simply SDL events, plus a few additional events. They are also used for primitive communication between threads.
Events are detected by Layouts, and then sent to the resident Widget. Finally, the Widget decides what to do with the events. There is one exception: the startup event is directly sent to all Widgets.
The startup event is sent to all Widgets when the Bogue mainloop is started using Main.run.
The mouse_enter event is triggered when the pointer (mouse motion, or finger touch -- but not finger drag) enters a new layout.
Similar to mouse_enter, when the pointer leaves the layout.
The var_changed event can be sent to notify that some widget made a change to a global variable.
Currently the update event is more or less equivalent to var_changed. This might change in future versions.
Same as Tsdl.Sdl.Event.user_event. This special event of type SDL_UserEvent can trigger a global reaction, not associated with any widget in particular, through the on_user_event parameter of Main.create
A list of events containing the mouse_button_down event, and the finger_down event.
A list of events containing the mouse_button_up event, and the finger_up event.
A list of events containing the mouse_motion event, and the finger_motion event.
Tell if the current thread should exit. This should only be called within a widget action. The event should be the event passed to the action function. A well programmed action should check this event to decide if it should exit.
A nice thread should do this just before terminating. May be suppressed in future versions.
nice_delay ev t Wait during a delay (t seconds), but quit anyway when should_exit ev is true.
Send the SDL_QUIT event, as if the user clicked on the close button of the last existing window. It will in principle raise the Main.Exit exception and hence exit the mainloop.
SDL Misc
type bogue_event = [ | `Bogue_startup| `Bogue_stop| `Bogue_stopped| `Bogue_mouse_at_rest| `Bogue_mouse_enter| `Bogue_mouse_leave| `Bogue_var_changed| `Bogue_keyboard_focus| `Bogue_mouse_focus| `Bogue_remove_focus| `Bogue_destroy_window| `Bogue_update| `Bogue_sync_action| `Bogue_redraw| `Bogue_keymap_changed| `Bogue_add_window| `SDL_POLLSENTINEL ]Union of sdl_event and bogue_event