Module: Qt::ApplicationLifecycle

Defined in:
lib/qt/application_lifecycle.rb

Overview

Tracks QApplication creation/disposal lifecycle from Ruby side.

Instance Method Summary collapse

Instance Method Details

#dispose ⇒ Object 



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# File 'lib/qt/application_lifecycle.rb', line 31

def dispose
  return if @handle.nil? || (@handle.respond_to?(:null?) && @handle.null?)

  # Native returns false when teardown is rejected by safety guards
  # (e.g. non-GUI thread dispose attempt). Keep handle intact in that case.
  deleted = Native.qapplication_delete(@handle)
  return false unless deleted

  @handle = nil
  self.class.current = nil if self.class.current.equal?(self)
  true
end

#exec ⇒ Object 



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# File 'lib/qt/application_lifecycle.rb', line 24

def exec
  @windows.each(&:show)
  Native.qapplication_exec(@handle)
ensure
  dispose
end

#initialize(_argc = 0, _argv = []) ⇒ Object 



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# File 'lib/qt/application_lifecycle.rb', line 6

def initialize(_argc = 0, _argv = [])
  @windows = []
  # Propagate real argv0 into native QApplication creation so desktop
  # environments can derive app identity/window class from process intent.
  argv0 = if _argv.respond_to?(:[]) && !_argv.empty?
            _argv[0]
          else
            $PROGRAM_NAME
          end
  argv0 = 'ruby' if argv0.nil? || argv0.to_s.empty?
  @handle = Native.qapplication_new(Qt::StringCodec.to_qt_text(argv0))
  self.class.current = self
end

#register_window(window) ⇒ Object 



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# File 'lib/qt/application_lifecycle.rb', line 20

def register_window(window)
  @windows << window unless @windows.include?(window)
end