Scrollbar. More...

#include <scrollbar.hpp>

Inheritance diagram for gui::scrollbar:

Public Member Functions
	scrollbar ()
	Create a scrollbar. More...

unsigned	get_position () const
	Determine where the scrollbar is. More...

unsigned	get_max_position () const

void	set_position (unsigned pos)
	Manually update the scrollbar. More...

void	adjust_position (unsigned pos)
	Ensure the viewport contains the position. More...

void	move_position (int dep)
	Move the scrollbar. More...

void	set_shown_size (unsigned h)
	Set the relative size of the grip. More...

void	set_full_size (unsigned h)
	Set the relative size of the scrollbar. More...

void	set_scroll_rate (unsigned r)
	Set scroll rate. More...

void	scroll_down ()
	Scrolls down one step. More...

void	scroll_up ()
	Scrolls up one step. More...

Public Member Functions inherited from gui::widget
const rect &	location () const

virtual void	set_location (const SDL_Rect &rect)

void	set_location (int x, int y)

void	set_width (int w)

void	set_height (int h)

void	set_measurements (int w, int h)

int	width () const

int	height () const

bool	focus (const SDL_Event *event)

void	set_focus (bool focus)

virtual void	hide (bool value=true)

bool	hidden () const

virtual void	enable (bool new_val=true)

bool	enabled () const

void	set_clip_rect (const SDL_Rect &rect)

void	queue_redraw ()
	Indicate that the widget should be redrawn. More...

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

void	set_dirty (bool dirty=true)

bool	dirty () const

const std::string &	id () const

void	set_id (const std::string &id)

void	set_tooltip_string (const std::string &str)

virtual void	process_tooltip_string (int mousex, int mousey) override

virtual void	layout () override
	Called by draw_manager to validate layout. More...

virtual bool	expose (const rect &region) override
	Called by draw_manager when it believes a redraw is necessary. More...

virtual rect	screen_location () override
	The current draw location of the display, on the screen. More...

Public Member Functions inherited from events::sdl_handler
virtual void	handle_window_event (const SDL_Event &)

virtual void	process_event ()

virtual bool	requires_event_focus (const SDL_Event *=nullptr) const

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 Member Functions inherited from gui2::top_level_drawable
virtual void	update ()
	Update state and any parameters that may effect layout, or any of the later stages. More...

virtual void	render ()
	Perform any internal rendering necessary to prepare the drawable. More...

Protected Member Functions
virtual void	handle_event (const SDL_Event &event)

virtual void	draw_contents ()

Protected Member Functions inherited from gui::widget
	widget (const bool auto_join=true)

virtual	~widget ()

virtual void	update_location (const SDL_Rect &)

bool	mouse_locked () const

void	aquire_mouse_lock ()

void	free_mouse_lock ()

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 ()

Protected Member Functions inherited from gui2::top_level_drawable
	top_level_drawable ()

virtual	~top_level_drawable ()

	top_level_drawable (const top_level_drawable &)

top_level_drawable &	operator= (const top_level_drawable &)

	top_level_drawable (top_level_drawable &&)

top_level_drawable &	operator= (top_level_drawable &&)

Private Types
enum	STATE { UNINIT , NORMAL , ACTIVE , DRAGGED }

Private Member Functions
SDL_Rect	grip_area () const

Private Attributes
STATE	state_

int	minimum_grip_height_

int	mousey_on_grip_

unsigned int	grip_position_

unsigned int	grip_height_

unsigned int	full_height_

int	scroll_rate_