Fl_Round_Button Class Reference

Buttons generate callbacks when they are clicked by the user. More...

#include <Fl_Round_Button.H>

Inheritance diagram for Fl_Round_Button:

Public Member Functions
	Fl_Round_Button (int x, int y, int w, int h, const char *l=0)
	Creates a new Fl_Round_Button widget using the given position, size, and label string.
Public Member Functions inherited from Fl_Light_Button
	Fl_Light_Button (int x, int y, int w, int h, const char *l=0)
	Creates a new Fl_Light_Button widget using the given position, size, and label string.
int	handle (int) FL_OVERRIDE
	Handles the specified event.
Public Member Functions inherited from Fl_Button
int	clear ()
	Same as value(0).
uchar	compact ()
	Return true if buttons are rendered as compact buttons.
void	compact (uchar v)
	Decide if buttons should be rendered in compact mode.
Fl_Boxtype	down_box () const
	Returns the current down box type, which is drawn when value() is non-zero.
void	down_box (Fl_Boxtype b)
	Sets the down box type.
Fl_Color	down_color () const
	(for backwards compatibility)
void	down_color (unsigned c)
	(for backwards compatibility)
	Fl_Button (int X, int Y, int W, int H, const char *L=0)
	The constructor creates the button using the given position, size, and label.
int	set ()
	Same as value(1).
void	setonly ()
	Turns on this button and turns off all other radio buttons in the group (calling value(1) or set() does not do this).
int	shortcut () const
	Returns the current shortcut key for the button.
void	shortcut (const char *s)
	(for backwards compatibility)
void	shortcut (int s)
	Sets the shortcut key to s.
char	value () const
	Returns the current value of the button (0 or 1).
int	value (int v)
	Sets the current value of the button.
Public Member Functions inherited from Fl_Widget
void	_clear_fullscreen ()
void	_set_fullscreen ()
void	activate ()
	Activates the widget.
unsigned int	active () const
	Returns whether the widget is active.
int	active_r () const
	Returns whether the widget and all of its parents are active.
Fl_Align	align () const
	Gets the label alignment.
void	align (Fl_Align alignment)
	Sets the label alignment.
long	argument () const
	Gets the current user data (long) argument that is passed to the callback function.
void	argument (long v)
	Sets the current user data (long) argument that is passed to the callback function.
virtual class Fl_Gl_Window *	as_gl_window ()
	Returns an Fl_Gl_Window pointer if this widget is an Fl_Gl_Window.
virtual class Fl_Gl_Window const *	as_gl_window () const
virtual Fl_Group *	as_group ()
	Returns an Fl_Group pointer if this widget is an Fl_Group.
virtual Fl_Group const *	as_group () const
virtual Fl_Window *	as_window ()
	Returns an Fl_Window pointer if this widget is an Fl_Window.
virtual Fl_Window const *	as_window () const
void	bind_deimage (Fl_Image *img)
	Sets the image to use as part of the widget label when in the inactive state.
void	bind_deimage (int f)
	Bind the inactive image to the widget, so the widget will delete the image when it is no longer needed.
void	bind_image (Fl_Image *img)
	Sets the image to use as part of the widget label when in the active state.
void	bind_image (int f)
	Bind the image to the widget, so the widget will delete the image when it is no longer needed.
Fl_Boxtype	box () const
	Gets the box type of the widget.
void	box (Fl_Boxtype new_box)
	Sets the box type for the widget.
Fl_Callback_p	callback () const
	Gets the current callback function for the widget.
void	callback (Fl_Callback *cb)
	Sets the current callback function for the widget.
void	callback (Fl_Callback *cb, Fl_Callback_User_Data *p, bool auto_free)
	Sets the current callback function and managed user data for the widget.
void	callback (Fl_Callback *cb, void *p)
	Sets the current callback function and data for the widget.
void	callback (Fl_Callback0 *cb)
	Sets the current callback function for the widget.
void	callback (Fl_Callback1 *cb, long p=0)
	Sets the current callback function for the widget.
unsigned int	changed () const
	Checks if the widget value changed since the last callback.
void	clear_active ()
	Marks the widget as inactive without sending events or changing focus.
void	clear_changed ()
	Marks the value of the widget as unchanged.
void	clear_damage (uchar c=0)
	Clears or sets the damage flags.
void	clear_output ()
	Sets a widget to accept input.
void	clear_visible ()
	Hides the widget.
void	clear_visible_focus ()
	Disables keyboard focus navigation with this widget.
Fl_Color	color () const
	Gets the background color of the widget.
void	color (Fl_Color bg)
	Sets the background color of the widget.
void	color (Fl_Color bg, Fl_Color sel)
	Sets the background and selection color of the widget.
Fl_Color	color2 () const
	For back compatibility only.
void	color2 (unsigned a)
	For back compatibility only.
int	contains (const Fl_Widget *w) const
	Checks if w is a child of this widget.
void	copy_label (const char *new_label)
	Sets the current label.
void	copy_tooltip (const char *text)
	Sets the current tooltip text.
uchar	damage () const
	Returns non-zero if draw() needs to be called.
void	damage (uchar c)
	Sets the damage bits for the widget.
void	damage (uchar c, int x, int y, int w, int h)
	Sets the damage bits for an area inside the widget.
int	damage_resize (int, int, int, int)
	Internal use only.
void	deactivate ()
	Deactivates the widget.
Fl_Image *	deimage ()
	Gets the image that is used as part of the widget label when in the inactive state.
const Fl_Image *	deimage () const
	Gets the image that is used as part of the widget label when in the inactive state.
void	deimage (Fl_Image &img)
	Sets the image to use as part of the widget label when in the inactive state.
void	deimage (Fl_Image *img)
	Sets the image to use as part of the widget label when in the inactive state.
int	deimage_bound () const
	Returns whether the inactive image is managed by the widget.
void	do_callback (Fl_Callback_Reason reason=FL_REASON_UNKNOWN)
	Calls the widget callback function with default arguments.
void	do_callback (Fl_Widget *widget, long arg, Fl_Callback_Reason reason=FL_REASON_UNKNOWN)
	Calls the widget callback function with arbitrary arguments.
void	do_callback (Fl_Widget *widget, void *arg=0, Fl_Callback_Reason reason=FL_REASON_UNKNOWN)
	Calls the widget callback function with arbitrary arguments.
void	draw_label (int, int, int, int, Fl_Align) const
	Draws the label in an arbitrary bounding box with an arbitrary alignment.
int	h () const
	Gets the widget height.
virtual void	hide ()
	Makes a widget invisible.
Fl_Image *	image ()
	Gets the image that is used as part of the widget label when in the active state.
const Fl_Image *	image () const
	Gets the image that is used as part of the widget label when in the active state.
void	image (Fl_Image &img)
	Sets the image to use as part of the widget label when in the active state.
void	image (Fl_Image *img)
	Sets the image to use as part of the widget label when in the active state.
int	image_bound () const
	Returns whether the image is managed by the widget.
int	inside (const Fl_Widget *wgt) const
	Checks if this widget is a child of wgt.
int	is_label_copied () const
	Returns whether the current label was assigned with copy_label().
const char *	label () const
	Gets the current label text.
void	label (const char *text)
	Sets the current label pointer.
void	label (Fl_Labeltype a, const char *b)
	Shortcut to set the label text and type in one call.
Fl_Color	labelcolor () const
	Gets the label color.
void	labelcolor (Fl_Color c)
	Sets the label color.
Fl_Font	labelfont () const
	Gets the font to use.
void	labelfont (Fl_Font f)
	Sets the font to use.
Fl_Fontsize	labelsize () const
	Gets the font size in pixels.
void	labelsize (Fl_Fontsize pix)
	Sets the font size in pixels.
Fl_Labeltype	labeltype () const
	Gets the label type.
void	labeltype (Fl_Labeltype a)
	Sets the label type.
void	measure_label (int &ww, int &hh) const
	Sets width ww and height hh accordingly with the label size.
bool	needs_keyboard () const
	Returns whether this widget needs a keyboard.
void	needs_keyboard (bool needs)
	Sets whether this widget needs a keyboard.
unsigned int	output () const
	Returns if a widget is used for output only.
Fl_Group *	parent () const
	Returns a pointer to the parent widget.
void	parent (Fl_Group *p)
	Internal use only - "for hacks only".
void	position (int X, int Y)
	Repositions the window or widget.
void	redraw ()
	Schedules the drawing of the widget.
void	redraw_label ()
	Schedules the drawing of the label.
virtual void	resize (int x, int y, int w, int h)
	Changes the size or position of the widget.
Fl_Color	selection_color () const
	Gets the selection color.
void	selection_color (Fl_Color a)
	Sets the selection color.
void	set_active ()
	Marks the widget as active without sending events or changing focus.
void	set_changed ()
	Marks the value of the widget as changed.
void	set_output ()
	Sets a widget to output only.
void	set_visible ()
	Makes the widget visible.
void	set_visible_focus ()
	Enables keyboard focus navigation with this widget.
int	shortcut_label () const
	Returns whether the widget's label uses '&' to indicate shortcuts.
void	shortcut_label (int value)
	Sets whether the widget's label uses '&' to indicate shortcuts.
virtual void	show ()
	Makes a widget visible.
void	size (int W, int H)
	Changes the size of the widget.
int	take_focus ()
	Gives the widget the keyboard focus.
unsigned int	takesevents () const
	Returns if the widget is able to take events.
int	test_shortcut ()
	Returns true if the widget's label contains the entered '&x' shortcut.
const char *	tooltip () const
	Gets the current tooltip text.
void	tooltip (const char *text)
	Sets the current tooltip text.
Fl_Window *	top_window () const
	Returns a pointer to the top-level window for the widget.
Fl_Window *	top_window_offset (int &xoff, int &yoff) const
	Finds the x/y offset of the current widget relative to the top-level window.
uchar	type () const
	Gets the widget type.
void	type (uchar t)
	Sets the widget type.
int	use_accents_menu ()
	Returns non zero if MAC_USE_ACCENTS_MENU flag is set, 0 otherwise.
void *	user_data () const
	Gets the user data for this widget.
void	user_data (Fl_Callback_User_Data *v, bool auto_free)
	Sets the user data for this widget.
void	user_data (void *v)
	Sets the user data for this widget.
unsigned int	visible () const
	Returns whether a widget is visible.
unsigned int	visible_focus () const
	Checks whether this widget has a visible focus.
void	visible_focus (int v)
	Modifies keyboard focus navigation.
int	visible_r () const
	Returns whether a widget and all its parents are visible.
int	w () const
	Gets the widget width.
Fl_When	when () const
	Returns the conditions under which the callback is called.
void	when (uchar i)
	Sets the flags used to decide when a callback is called.
Fl_Window *	window () const
	Returns a pointer to the nearest parent window up the widget hierarchy.
int	x () const
	Gets the widget position in its window.
int	y () const
	Gets the widget position in its window.
virtual	~Fl_Widget ()
	Destroys the widget.

Additional Inherited Members
Static Public Member Functions inherited from Fl_Widget
static void	default_callback (Fl_Widget *widget, void *data)
	The default callback for all widgets that don't set a callback.
static unsigned int	label_shortcut (const char *t)
	Returns the Unicode value of the '&x' shortcut in a given text.
static int	test_shortcut (const char *, const bool require_alt=false)
	Returns true if the given text t contains the entered '&x' shortcut.
Protected Types inherited from Fl_Widget
enum	{   INACTIVE = 1<<0 , INVISIBLE = 1<<1 , OUTPUT = 1<<2 , NOBORDER = 1<<3 ,   FORCE_POSITION = 1<<4 , NON_MODAL = 1<<5 , SHORTCUT_LABEL = 1<<6 , CHANGED = 1<<7 ,   OVERRIDE = 1<<8 , VISIBLE_FOCUS = 1<<9 , COPIED_LABEL = 1<<10 , CLIP_CHILDREN = 1<<11 ,   MENU_WINDOW = 1<<12 , TOOLTIP_WINDOW = 1<<13 , MODAL = 1<<14 , NO_OVERLAY = 1<<15 ,   GROUP_RELATIVE = 1<<16 , COPIED_TOOLTIP = 1<<17 , FULLSCREEN = 1<<18 , MAC_USE_ACCENTS_MENU = 1<<19 ,   NEEDS_KEYBOARD = 1<<20 , IMAGE_BOUND = 1<<21 , DEIMAGE_BOUND = 1<<22 , AUTO_DELETE_USER_DATA = 1<<23 ,   MAXIMIZED = 1<<24 , POPUP = 1<<25 , USERFLAG3 = 1<<29 , USERFLAG2 = 1<<30 ,   USERFLAG1 = 1<<31 }
	flags possible values enumeration. More...
Protected Member Functions inherited from Fl_Light_Button
void	draw () FL_OVERRIDE
	Draws the widget.
Protected Member Functions inherited from Fl_Button
void	simulate_key_action ()
Protected Member Functions inherited from Fl_Widget
void	clear_flag (unsigned int c)
	Clears a flag in the flags mask.
void	draw_backdrop () const
	If FL_ALIGN_IMAGE_BACKDROP is set, the image or deimage will be drawn.
void	draw_box () const
	Draws the widget box according its box style.
void	draw_box (Fl_Boxtype t, Fl_Color c) const
	Draws a box of type t, of color c at the widget's position and size.
void	draw_box (Fl_Boxtype t, int x, int y, int w, int h, Fl_Color c) const
	Draws a box of type t, of color c at the position X,Y and size W,H.
void	draw_focus () const
	Draws a focus rectangle around the widget.
void	draw_focus (Fl_Boxtype t, int X, int Y, int W, int H) const
	Draws a focus rectangle around the widget.
void	draw_focus (Fl_Boxtype t, int x, int y, int w, int h, Fl_Color bg) const
	Draws a focus box for the widget at the given position and size.
void	draw_label () const
	Draws the widget's label at the defined label position.
void	draw_label (int, int, int, int) const
	Draws the label in an arbitrary bounding box.
	Fl_Widget (int x, int y, int w, int h, const char *label=0L)
	Creates a widget at the given position and size.
unsigned int	flags () const
	Gets the widget flags mask.
void	h (int v)
	Internal use only.
void	set_flag (unsigned int c)
	Sets a flag in the flags mask.
void	w (int v)
	Internal use only.
void	x (int v)
	Internal use only.
void	y (int v)
	Internal use only.
Static Protected Member Functions inherited from Fl_Button
static void	key_release_timeout (void *)
Static Protected Attributes inherited from Fl_Button
static Fl_Widget_Tracker *	key_release_tracker = 0

Detailed Description

Buttons generate callbacks when they are clicked by the user.

You control exactly when and how by changing the values for type() and when().

The Fl_Round_Button subclass displays the "on" state by turning on a light, rather than drawing pushed in. The shape of the "light" is initially set to FL_ROUND_DOWN_BOX. The color of the light when on is controlled with selection_color(), which defaults to FL_FOREGROUND_COLOR.

Constructor & Destructor Documentation

Fl_Round_Button()

Fl_Round_Button::Fl_Round_Button	(	int	X,
		int	Y,
		int	W,
		int	H,
		const char *	L = 0
	)

Creates a new Fl_Round_Button widget using the given position, size, and label string.

The Fl_Round_Button subclass displays the "ON" state by turning on a light, rather than drawing pushed in.

The default box type is FL_NO_BOX, which draws the label w/o a box right of the checkmark.

The shape of the "light" is set with down_box() and its default value is FL_ROUND_DOWN_BOX.

The color of the light when on is controlled with selection_color(), which defaults to FL_FOREGROUND_COLOR (usually black).

Parameters

[in]	X,Y,W,H	position and size of the widget
[in]	L	widget label, default is no label

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

• Fl_Round_Button.H
• Fl_Round_Button.cxx