This singleton class handles all events. More...

Inheritance diagram for gui2::event::sdl_event_handler:

Public Member Functions
	sdl_event_handler ()

	~sdl_event_handler ()

void	handle_event (const SDL_Event &event) override
	Inherited from events::sdl_handler. More...

void	handle_window_event (const SDL_Event &event) override
	Inherited from events::sdl_handler. More...

void	connect (dispatcher *dispatcher)
	Connects a dispatcher. More...

void	disconnect (dispatcher *dispatcher)
	Disconnects a dispatcher. More...

std::vector< dispatcher * > &	get_dispatchers ()
	Returns all dispatchers in the Z order. More...

Public Member Functions inherited from events::sdl_handler
virtual void	process_event ()

virtual bool	requires_event_focus (const SDL_Event *=nullptr) const

virtual void	process_tooltip_string (int, int)

virtual void	join ()

virtual void	join (context &c)

virtual void	join_same (sdl_handler *parent)

virtual void	leave ()

virtual void	join_global ()

virtual void	leave_global ()

virtual bool	has_joined ()

virtual bool	has_joined_global ()

sdl_handler &	operator= (sdl_handler &&)=delete
	Moving would require two instances' context membership to be handled, it's simpler to delete these and require the two instances to be separately constructed / destructed. More...

	sdl_handler (sdl_handler &&)=delete

Public Attributes
dispatcher *	mouse_focus
	The dispatcher that captured the mouse focus. More...

Private Member Functions
void	activate ()
	Reinitializes the state of all dispatchers. More...

void	raw_event (const SDL_Event &event)
	Fires a raw SDL event. More...

void	video_resize (const point &new_size)
	Fires a video resize event. More...

void	mouse (const ui_event event, const point &position)
	Fires a generic mouse event. More...

void	mouse_button_up (const point &position, const uint8_t button)
	Fires a mouse button up event. More...

void	mouse_button_down (const point &position, const uint8_t button)
	Fires a mouse button down event. More...

void	mouse_wheel (const point &position, int scrollx, int scrolly)
	Fires a mouse wheel event. More...

dispatcher *	keyboard_dispatcher ()
	Gets the dispatcher that wants to receive the keyboard input. More...

void	touch_motion (const point &position, const point &distance)
	Fires a touch-moved event. More...

void	touch_down (const point &position)
	Fires a touch "finger down" event. More...

void	touch_up (const point &position)
	Fires a touch "finger up" event. More...

void	touch_multi_gesture (const point &center, float dTheta, float dDist, uint8_t numFingers)
	Fires a touch gesture event. More...

void	hat_motion (const SDL_Event &event)
	Handles a hat motion event. More...

void	button_down (const SDL_Event &event)
	Handles a joystick button down event. More...

void	key_down (const SDL_Event &event)
	Fires a key down event. More...

bool	hotkey_pressed (const hotkey::hotkey_ptr &key)
	Handles the pressing of a hotkey. More...

void	key_down (const SDL_Keycode key, const SDL_Keymod modifier, const std::string &unicode)
	Fires a key down event. More...

void	text_input (const std::string &unicode)
	Fires a text input event. More...

void	text_editing (const std::string &unicode, int32_t start, int32_t len)
	Fires a text editing event. More...

void	keyboard (const ui_event event)
	Fires a keyboard event which has no parameters. More...

void	close_window (const unsigned window_id)
	Fires a CLOSE_WINDOW event for the window with the given ID. More...

Private Attributes
std::vector< dispatcher * >	dispatchers_
	The dispatchers. More...

dispatcher *	keyboard_focus_
	Needed to determine which dispatcher gets the keyboard events. More...

Friends
bool	gui2::is_in_dialog ()

void	capture_keyboard (dispatcher *dispatcher)
	Captures the keyboard. More...

Additional Inherited Members
Protected Member Functions inherited from events::sdl_handler
	sdl_handler (const bool auto_join=true)

	sdl_handler (const sdl_handler &)

sdl_handler &	operator= (const sdl_handler &)

virtual	~sdl_handler ()

virtual std::vector< sdl_handler * >	handler_members ()

Detailed Description

This singleton class handles all events.

It's a new experimental class.

Definition at line 121 of file handler.cpp.

Constructor & Destructor Documentation

◆ sdl_event_handler()

gui2::event::sdl_event_handler::sdl_event_handler ( )

Definition at line 346 of file handler.cpp.

References events::sdl_handler::join().

◆ ~sdl_event_handler()

gui2::event::sdl_event_handler::~sdl_event_handler ( )

Definition at line 364 of file handler.cpp.

References events::sdl_handler::leave().

Member Function Documentation

◆ activate()

void gui2::event::sdl_event_handler::activate ( )

private

Reinitializes the state of all dispatchers.

This is needed when the application gets activated, to make sure the state of mainly the mouse is set properly.

Definition at line 576 of file handler.cpp.

References dispatchers_, gui2::event::dispatcher::fire(), and gui2::event::SDL_ACTIVATE.

Referenced by handle_event().

◆ button_down()

void gui2::event::sdl_event_handler::button_down ( const SDL_Event & event )

private

Handles a joystick button down event.

Parameters

event The SDL joystick button event triggered.

Definition at line 742 of file handler.cpp.

References hotkey::get_hotkey(), and hotkey_pressed().

Referenced by handle_event().

◆ close_window()

void gui2::event::sdl_event_handler::close_window ( const unsigned window_id )

private

Fires a CLOSE_WINDOW event for the window with the given ID.

Parameters

window_id The ID of the window to close.

Definition at line 824 of file handler.cpp.

References gui2::event::CLOSE_WINDOW, DBG_GUI_E, gui2::event::dispatcher::fire(), and gui2::window::window_instance().

Referenced by handle_event().

◆ connect()

void gui2::event::sdl_event_handler::connect ( dispatcher * dispatcher )

Connects a dispatcher.

Parameters

dispatcher The dispatcher to connect.

Definition at line 528 of file handler.cpp.

References DBG_GUI_E, dispatchers_, gui2::event::event_context, utils::find(), events::sdl_handler::join(), and LOG_GUI_E.

◆ disconnect()

void gui2::event::sdl_event_handler::disconnect ( dispatcher * dispatcher )

Disconnects a dispatcher.

Parameters

dispatcher The dispatcher to disconnect.

Definition at line 544 of file handler.cpp.

References DBG_GUI_E, dispatchers_, gui2::event::event_context, utils::find(), keyboard_focus_, events::sdl_handler::leave(), LOG_GUI_E, and mouse_focus.

◆ get_dispatchers()

std::vector<dispatcher*>& gui2::event::sdl_event_handler::get_dispatchers ( )

inline

Returns all dispatchers in the Z order.

Definition at line 153 of file handler.cpp.

References dispatchers_.

◆ handle_event()

void gui2::event::sdl_event_handler::handle_event ( const SDL_Event & event )

overridevirtual

Inherited from events::sdl_handler.

No dispatchers drop the event.

Implements events::sdl_handler.

Definition at line 371 of file handler.cpp.

References activate(), gui2::button::button(), button_down(), c, close_window(), CLOSE_WINDOW_EVENT, dispatchers_, DOUBLE_CLICK_EVENT, gui2::execute_timer(), video::game_canvas_size(), gui2::get_mouse_position(), hat_motion(), HOVER_REMOVE_POPUP_EVENT, key_down(), mouse(), mouse_button_down(), mouse_button_up(), mouse_wheel(), draw::point(), raw_event(), gui2::event::SDL_MOUSE_MOTION, gui2::event::SHOW_HELPTIP, SHOW_HELPTIP_EVENT, text_editing(), TIMER_EVENT, touch_down(), touch_motion(), touch_multi_gesture(), touch_up(), video_resize(), and WRN_GUI_E.

Referenced by handle_window_event().

◆ handle_window_event()

void gui2::event::sdl_event_handler::handle_window_event ( const SDL_Event & event )

overridevirtual

Inherited from events::sdl_handler.

Reimplemented from events::sdl_handler.

Definition at line 523 of file handler.cpp.

References handle_event().

◆ hat_motion()

void gui2::event::sdl_event_handler::hat_motion ( const SDL_Event & event )

private

Handles a hat motion event.

Parameters

event The SDL joystick hat event triggered.

Definition at line 729 of file handler.cpp.

References hotkey::get_hotkey(), and hotkey_pressed().

Referenced by handle_event().

◆ hotkey_pressed()

bool gui2::event::sdl_event_handler::hotkey_pressed ( const hotkey::hotkey_ptr & key )

private

Handles the pressing of a hotkey.

Parameters

key	The hotkey item pressed.

Returns: True if there was a valid dispatcher with which to execute the hotkey callback, false otherwise.

Definition at line 791 of file handler.cpp.

References hotkey::hotkey_command::command, gui2::event::dispatcher::execute_hotkey(), hotkey::get_hotkey_command(), and keyboard_dispatcher().

Referenced by button_down(), hat_motion(), and key_down().

◆ key_down() [1/2]

void gui2::event::sdl_event_handler::key_down ( const SDL_Event & event )

private

Fires a key down event.

Parameters

event The SDL keyboard event triggered.

Definition at line 755 of file handler.cpp.

References hotkey::get_hotkey(), hotkey_pressed(), and text_input().

Referenced by handle_event(), and text_input().

◆ key_down() [2/2]

void gui2::event::sdl_event_handler::key_down	(	const SDL_Keycode	key,
		const SDL_Keymod	modifier,
		const std::string &	unicode
	)

private

Fires a key down event.

Parameters

key	The SDL key code of the key pressed.
modifier	The SDL key modifiers used.
unicode	The unicode value for the key pressed.

Definition at line 800 of file handler.cpp.

References DBG_GUI_E, gui2::event::dispatcher::fire(), keyboard_dispatcher(), and gui2::event::SDL_KEY_DOWN.

◆ keyboard()

void gui2::event::sdl_event_handler::keyboard ( const ui_event event )

private

Fires a keyboard event which has no parameters.

This can happen for example when the mouse wheel is used.

Parameters

event The event to fire.

Definition at line 815 of file handler.cpp.

References DBG_GUI_E, gui2::event::dispatcher::fire(), and keyboard_dispatcher().

◆ keyboard_dispatcher()

dispatcher * gui2::event::sdl_event_handler::keyboard_dispatcher ( )

private

Gets the dispatcher that wants to receive the keyboard input.

Returns: The dispatcher.

Return values

nullptr No dispatcher found.

Definition at line 686 of file handler.cpp.

References dispatchers_, gui2::event::dispatcher::get_want_keyboard_input(), keyboard_focus_, and utils::views::reverse.

Referenced by hotkey_pressed(), key_down(), keyboard(), text_editing(), and text_input().

◆ mouse()

void gui2::event::sdl_event_handler::mouse	(	const ui_event	event,
		const point &	position
	)

private

Fires a generic mouse event.

Parameters

event	The event to fire.
position	The position of the mouse.

Definition at line 603 of file handler.cpp.

References gui2::event::dispatcher::all, DBG_GUI_E, dispatchers_, gui2::event::dispatcher::fire(), gui2::event::dispatcher::get_mouse_behavior(), gui2::event::dispatcher::is_at(), mouse_focus, gui2::event::dispatcher::none, and utils::views::reverse.

Referenced by handle_event(), mouse_button_down(), mouse_button_up(), and mouse_wheel().

◆ mouse_button_down()

void gui2::event::sdl_event_handler::mouse_button_down	(	const point &	position,
		const uint8_t	button
	)

private

Fires a mouse button down event.

Parameters

position	The position of the mouse.
button	The SDL id of the button that caused the event.

Definition at line 650 of file handler.cpp.

References mouse(), gui2::event::SDL_LEFT_BUTTON_DOWN, gui2::event::SDL_MIDDLE_BUTTON_DOWN, gui2::event::SDL_RIGHT_BUTTON_DOWN, and WRN_GUI_E.

Referenced by handle_event().

◆ mouse_button_up()

void gui2::event::sdl_event_handler::mouse_button_up	(	const point &	position,
		const uint8_t	button
	)

private

Fires a mouse button up event.

Parameters

position	The position of the mouse.
button	The SDL id of the button that caused the event.

Definition at line 629 of file handler.cpp.

References mouse(), gui2::event::SDL_LEFT_BUTTON_UP, gui2::event::SDL_MIDDLE_BUTTON_UP, gui2::event::SDL_RIGHT_BUTTON_UP, and WRN_GUI_E.

Referenced by handle_event().

◆ mouse_wheel()

void gui2::event::sdl_event_handler::mouse_wheel	(	const point &	position,
		int	scrollx,
		int	scrolly
	)

private

Fires a mouse wheel event.

Parameters

position	The position of the mouse.
scrollx	The amount of horizontal scrolling.
scrolly	The amount of vertical scrolling.

Definition at line 671 of file handler.cpp.

References mouse(), gui2::event::SDL_WHEEL_DOWN, gui2::event::SDL_WHEEL_LEFT, gui2::event::SDL_WHEEL_RIGHT, and gui2::event::SDL_WHEEL_UP.

Referenced by handle_event().

◆ raw_event()

void gui2::event::sdl_event_handler::raw_event ( const SDL_Event & event )

private

Fires a raw SDL event.

Definition at line 594 of file handler.cpp.

References DBG_GUI_E, dispatchers_, gui2::event::dispatcher::fire(), and gui2::event::SDL_RAW_EVENT.

Referenced by handle_event().

◆ text_editing()

void gui2::event::sdl_event_handler::text_editing	(	const std::string &	unicode,
		int32_t	start,
		int32_t	len
	)

private

Fires a text editing event.

Parameters

unicode	The unicode value for the text being edited.
start	The start position for the text being edited.
len	The selection length for the text being edited.

Definition at line 782 of file handler.cpp.

References gui2::event::dispatcher::fire(), keyboard_dispatcher(), gui2::event::SDL_TEXT_EDITING, and editor::start().

Referenced by handle_event().

◆ text_input()

void gui2::event::sdl_event_handler::text_input ( const std::string & unicode )

private

Fires a text input event.

Parameters

unicode The unicode value for the text entered.

Definition at line 771 of file handler.cpp.

References gui2::event::dispatcher::fire(), key_down(), keyboard_dispatcher(), and gui2::event::SDL_TEXT_INPUT.

Referenced by key_down().

◆ touch_down()

void gui2::event::sdl_event_handler::touch_down ( const point & position )

private

Fires a touch "finger down" event.

Parameters

position The position touched.

Definition at line 715 of file handler.cpp.

References dispatchers_, gui2::event::dispatcher::fire(), utils::views::reverse, and gui2::event::SDL_TOUCH_DOWN.

Referenced by handle_event().

◆ touch_motion()

void gui2::event::sdl_event_handler::touch_motion	(	const point &	position,
		const point &	distance
	)

private

Fires a touch-moved event.

Parameters

position	The position touched.
distance	The distance moved.

Definition at line 701 of file handler.cpp.

References dispatchers_, gui2::event::dispatcher::fire(), utils::views::reverse, and gui2::event::SDL_TOUCH_MOTION.

Referenced by handle_event().

◆ touch_multi_gesture()

void gui2::event::sdl_event_handler::touch_multi_gesture	(	const point &	center,
		float	dTheta,
		float	dDist,
		uint8_t	numFingers
	)

private

Fires a touch gesture event.

Parameters

center	the center of gesture
dTheta	the amount that the fingers rotated during this motion
dDist	the amount that the fingers pinched during this motion
numFingers	the number of fingers used in the gesture

Definition at line 722 of file handler.cpp.

References dispatchers_, gui2::event::dispatcher::fire(), utils::views::reverse, and gui2::event::SDL_TOUCH_MULTI_GESTURE.

Referenced by handle_event().

◆ touch_up()

void gui2::event::sdl_event_handler::touch_up ( const point & position )

private

Fires a touch "finger up" event.

Parameters

position The position touched.

Definition at line 708 of file handler.cpp.

References dispatchers_, gui2::event::dispatcher::fire(), utils::views::reverse, and gui2::event::SDL_TOUCH_UP.

Referenced by handle_event().

◆ video_resize()

void gui2::event::sdl_event_handler::video_resize ( const point & new_size )

private

Fires a video resize event.

Parameters

new_size The new size of the window.

Definition at line 584 of file handler.cpp.

References DBG_GUI_E, dispatchers_, gui2::event::dispatcher::fire(), and gui2::event::SDL_VIDEO_RESIZE.

Referenced by handle_event().

Friends And Related Function Documentation

◆ capture_keyboard

void capture_keyboard ( dispatcher * dispatcher )

friend

Captures the keyboard.

A dispatcher can capture the keyboard, when for example it's pressed on a button, this means all keyboard events after that are send to that widget.

Parameters

dispatcher The dispatcher which should get the keyboard focus.

Definition at line 910 of file handler.cpp.

◆ gui2::is_in_dialog

bool gui2::is_in_dialog ( )

friend

Member Data Documentation

◆ dispatchers_

std::vector<dispatcher*> gui2::event::sdl_event_handler::dispatchers_

private

The dispatchers.

The order of the items in the list is also the z-order the front item being the one completely in the background and the back item the one completely in the foreground.

Definition at line 335 of file handler.cpp.

Referenced by activate(), connect(), disconnect(), get_dispatchers(), handle_event(), keyboard_dispatcher(), mouse(), raw_event(), touch_down(), touch_motion(), touch_multi_gesture(), touch_up(), and video_resize().

◆ keyboard_focus_

dispatcher* gui2::event::sdl_event_handler::keyboard_focus_

private

Needed to determine which dispatcher gets the keyboard events.

NOTE the keyboard events aren't really wired in yet so doesn't do much.

Definition at line 342 of file handler.cpp.

Referenced by disconnect(), and keyboard_dispatcher().

◆ mouse_focus

dispatcher* gui2::event::sdl_event_handler::mouse_focus

The dispatcher that captured the mouse focus.

Definition at line 156 of file handler.cpp.

Referenced by disconnect(), and mouse().

The documentation for this class was generated from the following file:

gui/core/event/handler.cpp

Public Member Functions

Public Attributes

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ sdl_event_handler()

◆ ~sdl_event_handler()

Member Function Documentation

◆ activate()

◆ button_down()

◆ close_window()

◆ connect()

◆ disconnect()

◆ get_dispatchers()

◆ handle_event()

◆ handle_window_event()

◆ hat_motion()

◆ hotkey_pressed()

◆ key_down() [1/2]

◆ key_down() [2/2]

◆ keyboard()

◆ keyboard_dispatcher()

◆ mouse()

◆ mouse_button_down()

◆ mouse_button_up()

◆ mouse_wheel()

◆ raw_event()

◆ text_editing()

◆ text_input()

◆ touch_down()

◆ touch_motion()

◆ touch_multi_gesture()

◆ touch_up()

◆ video_resize()

Friends And Related Function Documentation

◆ capture_keyboard

◆ gui2::is_in_dialog

Member Data Documentation

◆ dispatchers_

◆ keyboard_focus_

◆ mouse_focus