A viewport is an special widget used to view only a part of the widget it 'holds'. More...

#include <viewport.hpp>

Inheritance diagram for gui2::viewport:

Public Member Functions
	viewport (const implementation::builder_viewport &builder, const builder_widget::replacements_map &replacements)

	~viewport ()

virtual void	place (const point &origin, const point &size) override
	See widget::place. More...

virtual void	layout_initialize (const bool full_initialization) override
	See widget::layout_initialize. More...

virtual void	impl_draw_children () override
	See widget::impl_draw_children. More...

virtual void	request_reduce_width (const unsigned maximum_width) override
	See widget::request_reduce_width. More...

virtual widget *	find_at (const point &coordinate, const bool must_be_active) override
	See widget::find_at. More...

virtual const widget *	find_at (const point &coordinate, const bool must_be_active) const override
	See widget::find_at. More...

widget *	find (const std::string &id, const bool must_be_active) override
	See widget::find. More...

const widget *	find (const std::string &id, const bool must_be_active) const override
	See widget::find. More...

bool	disable_click_dismiss () const override
	See widget::disable_click_dismiss. More...

virtual iteration::walker_ptr	create_walker () override
	See widget::create_walker. More...

Public Member Functions inherited from gui2::widget
	widget (const widget &)=delete

widget &	operator= (const widget &)=delete

	widget ()

	widget (const builder_widget &builder)
	Constructor. More...

virtual	~widget () override

void	set_id (const std::string &id)

const std::string &	id () const

window *	get_window ()
	Get the parent window. More...

const window *	get_window () const
	The constant version of get_window. More...

grid *	get_parent_grid ()
	Get the parent grid. More...

void	set_parent (widget *parent)

widget *	parent ()

virtual void	demand_reduce_width (const unsigned maximum_width)
	Tries to reduce the width of a widget. More...

virtual void	request_reduce_height (const unsigned maximum_height)
	Tries to reduce the height of a widget. More...

virtual void	demand_reduce_height (const unsigned maximum_height)
	Tries to reduce the height of a widget. More...

point	get_best_size () const
	Gets the best size for the widget. More...

virtual bool	can_mouse_focus () const
	Whether the mouse move/click event go 'through' this widget. More...

virtual bool	can_wrap () const
	Can the widget wrap. More...

virtual void	set_origin (const point &origin)
	Sets the origin of the widget. More...

virtual void	set_size (const point &size)
	Sets the size of the widget. More...

virtual void	move (const int x_offset, const int y_offset)
	Moves a widget. More...

virtual void	set_horizontal_alignment (const std::string &alignment)
	Sets the horizontal alignment of the widget within its parent grid. More...

virtual void	set_vertical_alignment (const std::string &alignment)
	Sets the horizontal alignment of the widget within its parent grid. More...

virtual void	layout_children ()
	Allows a widget to update its children. More...

point	get_origin () const
	Returns the screen origin of the widget. More...

point	get_size () const
	Returns the size of the widget. More...

rect	get_rectangle () const
	Gets the bounding rectangle of the widget on the screen. More...

int	get_x () const

int	get_y () const

unsigned	get_width () const

unsigned	get_height () const

void	set_linked_group (const std::string &linked_group)

SDL_Rect	calculate_blitting_rectangle () const
	Calculates the blitting rectangle of the widget. More...

SDL_Rect	calculate_clipping_rectangle () const
	Calculates the clipping rectangle of the widget. More...

bool	draw_background ()
	Draws the background of a widget. More...

void	draw_children ()
	Draws the children of a widget. More...

bool	draw_foreground ()
	Draws the foreground of the widget. More...

SDL_Rect	get_dirty_rectangle () const
	Gets the dirty rectangle of the widget. More...

virtual void	set_visible_rectangle (const SDL_Rect &rectangle)
	Sets the visible rectangle for a widget. More...

void	queue_redraw ()
	Indicates that this widget should be redrawn. More...

void	queue_redraw (const rect &region)
	Indicate that specific region of the screen should be redrawn. More...

void	set_visible (const visibility visible)

visibility	get_visible () const

redraw_action	get_drawing_action () const

void	set_debug_border_mode (const debug_border debug_border_mode)

void	set_debug_border_color (const color_t debug_border_color)

virtual bool	has_widget (const widget &widget) const
	Does the widget contain the widget. More...

Public Member Functions inherited from gui2::event_executor
	event_executor ()

virtual	~event_executor ()

void	set_wants_mouse_hover (const bool hover=true)

bool	wants_mouse_hover () const

void	set_wants_mouse_left_double_click (const bool click=true)

bool	wants_mouse_left_double_click () const

void	set_wants_mouse_middle_double_click (const bool click=true)

bool	wants_mouse_middle_double_click () const

event_executor &	set_wants_mouse_right_double_click (const bool click=true)

bool	wants_mouse_right_double_click () const

Public Member Functions inherited from gui2::event::dispatcher
	dispatcher ()

virtual	~dispatcher ()

void	connect ()
	Connects the dispatcher to the event handler. More...

void	disconnect ()
	Disconnects the dispatcher from the event handler. More...

bool	is_connected () const
	Return whether the dispatcher is currently connected. More...

bool	has_event (const ui_event event, const event_queue_type event_type)

bool	fire (const ui_event event, widget &target)
	Fires an event which has no extra parameters. More...

bool	fire (const ui_event event, widget &target, const point &coordinate)
	Fires an event which takes a coordinate parameter. More...

bool	fire (const ui_event event, widget &target, const SDL_Keycode key, const SDL_Keymod modifier, const std::string &unicode)
	Fires an event which takes keyboard parameters. More...

bool	fire (const ui_event event, widget &target, const point &pos, const point &distance)
	Fires an event which takes touch-motion parameters. More...

bool	fire (const ui_event event, widget &target, const point &center, float dTheta, float dDist, uint8_t numFingers)
	Fires an event which takes touch-gesture parameters. More...

bool	fire (const ui_event event, widget &target, void *)
	Fires an event which takes notification parameters. More...

bool	fire (const ui_event event, widget &target, const message &msg)
	Fires an event which takes message parameters. More...

bool	fire (const ui_event event, widget &target, const SDL_Event &sdlevent)
	Fires an event that's a raw SDL event. More...

bool	fire (const ui_event event, widget &target, const std::string &text, int32_t start, int32_t len)
	Fires an event which takes text input parameters. More...

template<ui_event E, typename F >
void	connect_signal (const F &func, const queue_position position=back_child)
	Adds a callback to the appropriate queue based on event type. More...

template<ui_event E, typename F >
void	disconnect_signal (const F &func, const queue_position position=back_child)
	Removes a callback from the appropriate queue based on event type. More...

void	capture_mouse ()
	Captures the mouse. More...

void	release_mouse ()
	Releases the mouse capture. More...

void	set_mouse_behavior (const mouse_behavior mouse_behavior)

mouse_behavior	get_mouse_behavior () const

void	set_want_keyboard_input (const bool want_keyboard_input)

bool	get_want_keyboard_input () const

void	register_hotkey (const hotkey::HOTKEY_COMMAND id, const hotkey_function &function)
	Registers a hotkey. More...

bool	execute_hotkey (const hotkey::HOTKEY_COMMAND id)
	Executes a hotkey. More...

Public Member Functions inherited from enable_lua_ptr< widget >
	enable_lua_ptr (widget *tp)

Private Member Functions
virtual point	calculate_best_size () const override
	See widget::calculate_best_size. More...

Private Attributes
std::unique_ptr< widget >	widget_

Friends
struct	viewport_implementation

Additional Inherited Members
Public Types inherited from gui2::widget
enum class	visibility { visible , hidden , invisible }
	Visibility settings done by the user. More...

enum class	redraw_action { full , partly , none }
	Visibility set by the engine. More...

enum class	debug_border { none , outline , fill }

Public Types inherited from gui2::event::dispatcher
enum	event_queue_type { pre = 1 , child = 2 , post = 4 }

enum	queue_position { front_pre_child , back_pre_child , front_child , back_child , front_post_child , back_post_child }
	The position where to add a new callback in the signal handler. More...

enum class	mouse_behavior { all , hit , none }
	The behavior of the mouse events. More...

Protected Member Functions inherited from gui2::widget
void	set_layout_size (const point &size)

const point &	layout_size () const

void	clear_layout_size ()
	Throws away layout_size_. More...

Detailed Description

A viewport is an special widget used to view only a part of the widget it 'holds'.

List with the viewport specific variables:

Key	Type	Default	Description
grow_direction	grow_direction	mandatory	The direction in which new items grow.
parallel_items	unsigned	mandatory	The number of items that are growing in parallel.
item_definition	section	mandatory	The definition of a new item.