Fl_Hold_Browser Class Reference

The Fl_Hold_Browser is a subclass of Fl_Browser which lets the user select a single item, or no items by clicking on the empty space. More...

#include <Fl_Hold_Browser.H>

Inheritance diagram for Fl_Hold_Browser:

Public Member Functions
	Fl_Hold_Browser (int X, int Y, int W, int H, const char *L=0)
	Creates a new Fl_Hold_Browser widget using the given position, size, and label string. More...
Public Member Functions inherited from Fl_Browser
void	add (const char *newtext, void *d=0)
	Adds a new line to the end of the browser. More...
void	bottomline (int line)
	Scrolls the browser so the bottom item in the browser is showing the specified line. More...
void	clear ()
	Removes all the lines in the browser. More...
char	column_char () const
	Gets the current column separator character. More...
void	column_char (char c)
	Sets the column separator to c. More...
const int *	column_widths () const
	Gets the current column width array. More...
void	column_widths (const int *arr)
	Sets the current array to arr. More...
void *	data (int line) const
	Returns the user data() for specified line. More...
void	data (int line, void *d)
	Sets the user data for specified line to d. More...
void	display (int line, int val=1)
	For back compatibility. More...
int	displayed (int line) const
	Returns non-zero if line has been scrolled to a position where it is being displayed. More...
	Fl_Browser (int X, int Y, int W, int H, const char *L=0)
	The constructor makes an empty browser. More...
char	format_char () const
	Gets the current format code prefix character, which by default is '@'. More...
void	format_char (char c)
	Sets the current format code prefix character to c. More...
void	hide (int line)
	Makes line invisible, preventing selection by the user. More...
void	hide ()
	Hides the entire Fl_Browser widget – opposite of show(). More...
void	icon (int line, Fl_Image *icon)
	Set the image icon for line to the value icon. More...
Fl_Image *	icon (int line) const
	Returns the icon currently defined for line. More...
void	insert (int line, const char *newtext, void *d=0)
	Insert a new entry whose label is newtext above given line, optional data d. More...
void	lineposition (int line, Fl_Line_Position pos)
	Updates the browser so that line is shown at position pos. More...
int	load (const char *filename)
	Clears the browser and reads the file, adding each line from the file to the browser. More...
void	make_visible (int line)
	Make the item at the specified line visible(). More...
void	middleline (int line)
	Scrolls the browser so the middle item in the browser is showing the specified line. More...
void	move (int to, int from)
	Line from is removed and reinserted at to. More...
void	remove (int line)
	Remove entry for given line number, making the browser one line shorter. More...
void	remove_icon (int line)
	Removes the icon for line. More...
void	replace (int a, const char *b)
	For back compatibility only. More...
int	select (int line, int val=1)
	Sets the selection state of the item at line to the value val. More...
int	selected (int line) const
	Returns 1 if specified line is selected, 0 if not. More...
void	show (int line)
	Makes line visible, and available for selection by user. More...
void	show ()
	Shows the entire Fl_Browser widget – opposite of hide(). More...
int	size () const
	Returns how many lines are in the browser. More...
void	size (int W, int H)
void	swap (int a, int b)
	Swaps two browser lines a and b. More...
const char *	text (int line) const
	Returns the label text for the specified line. More...
void	text (int line, const char *newtext)
	Sets the text for the specified line to newtext. More...
int	topline () const
	Returns the line that is currently visible at the top of the browser. More...
void	topline (int line)
	Scrolls the browser so the top item in the browser is showing the specified line. More...
int	value () const
	Returns the line number of the currently selected line, or 0 if none. More...
void	value (int line)
	Sets the browser's value(), which selects the specified line. More...
int	visible (int line) const
	Returns non-zero if the specified line is visible, 0 if hidden. More...
	~Fl_Browser ()
	The destructor deletes all list items and destroys the browser.
Public Member Functions inherited from Fl_Browser_
int	deselect (int docallbacks=0)
	Deselects all items in the list and returns 1 if the state changed or 0 if it did not. More...
void	display (void *item)
	Displays the item, scrolling the list as necessary. More...
int	handle (int event)
	Handles the event within the normal widget bounding box. More...
uchar	has_scrollbar () const
	Returns the current scrollbar mode, see Fl_Browser_::has_scrollbar(uchar)
void	has_scrollbar (uchar mode)
	Sets whether the widget should have scrollbars or not (default Fl_Browser_::BOTH). More...
int	hposition () const
	Gets the horizontal scroll position of the list as a pixel position pos. More...
void	hposition (int)
	Sets the horizontal scroll position of the list to pixel position pos. More...
int	position () const
	Gets the vertical scroll position of the list as a pixel position pos. More...
void	position (int pos)
	Sets the vertical scroll position of the list to pixel position pos. More...
void	resize (int X, int Y, int W, int H)
	Repositions and/or resizes the browser. More...
void	scrollbar_left ()
	Moves the vertical scrollbar to the lefthand side of the list. More...
void	scrollbar_right ()
	Moves the vertical scrollbar to the righthand side of the list. More...
int	scrollbar_size () const
	Gets the current size of the scrollbars' troughs, in pixels. More...
void	scrollbar_size (int newSize)
	Sets the pixel size of the scrollbars' troughs to newSize, in pixels. More...
int	scrollbar_width () const
	This method has been deprecated, existing for backwards compatibility only. More...
void	scrollbar_width (int width)
	This method has been deprecated, existing for backwards compatibility only. More...
int	select (void *item, int val=1, int docallbacks=0)
	Sets the selection state of item to val, and returns 1 if the state changed or 0 if it did not. More...
int	select_only (void *item, int docallbacks=0)
	Selects item and returns 1 if the state changed or 0 if it did not. More...
void	sort (int flags=0)
	Sort the items in the browser based on flags. More...
Fl_Color	textcolor () const
	Gets the default text color for the lines in the browser.
void	textcolor (Fl_Color col)
	Sets the default text color for the lines in the browser to color col.
Fl_Font	textfont () const
	Gets the default text font for the lines in the browser. More...
void	textfont (Fl_Font font)
	Sets the default text font for the lines in the browser to font.
Fl_Fontsize	textsize () const
	Gets the default text size (in pixels) for the lines in the browser.
void	textsize (Fl_Fontsize newSize)
	Sets the default text size (in pixels) for the lines in the browser to size.
Public Member Functions inherited from Fl_Group
Fl_Widget *&	_ddfdesign_kludge ()
	This is for forms compatibility only.
void	add (Fl_Widget &)
	The widget is removed from its current group (if any) and then added to the end of this group.
void	add (Fl_Widget *o)
	See void Fl_Group::add(Fl_Widget &w)
void	add_resizable (Fl_Widget &o)
	Adds a widget to the group and makes it the resizable widget.
Fl_Widget *const *	array () const
	Returns a pointer to the array of children. More...
virtual Fl_Group *	as_group ()
	Returns an Fl_Group pointer if this widget is an Fl_Group. More...
void	begin ()
	Sets the current group so you can build the widget tree by just constructing the widgets. More...
Fl_Widget *	child (int n) const
	Returns array()[n]. More...
int	children () const
	Returns how many child widgets the group has.
void	clear ()
	Deletes all child widgets from memory recursively. More...
void	clip_children (int c)
	Controls whether the group widget clips the drawing of child widgets to its bounding box. More...
unsigned int	clip_children ()
	Returns the current clipping mode. More...
void	end ()
	Exactly the same as current(this->parent()). More...
int	find (const Fl_Widget *) const
	Searches the child array for the widget and returns the index. More...
int	find (const Fl_Widget &o) const
	See int Fl_Group::find(const Fl_Widget *w) const.
	Fl_Group (int, int, int, int, const char *=0)
	Creates a new Fl_Group widget using the given position, size, and label string. More...
void	focus (Fl_Widget *W)
void	forms_end ()
	This is for forms compatibility only.
int	handle (int)
	Handles the specified event. More...
void	init_sizes ()
	Resets the internal array of widget sizes and positions. More...
void	insert (Fl_Widget &, int i)
	The widget is removed from its current group (if any) and then inserted into this group. More...
void	insert (Fl_Widget &o, Fl_Widget *before)
	This does insert(w, find(before)). More...
void	remove (int index)
	Removes the widget at index from the group but does not delete it. More...
void	remove (Fl_Widget &)
	Removes a widget from the group but does not delete it. More...
void	remove (Fl_Widget *o)
	Removes the widget o from the group. More...
void	resizable (Fl_Widget &o)
	See void Fl_Group::resizable(Fl_Widget *box)
void	resizable (Fl_Widget *o)
	The resizable widget defines the resizing box for the group. More...
Fl_Widget *	resizable () const
	See void Fl_Group::resizable(Fl_Widget *box)
void	resize (int, int, int, int)
	Resizes the Fl_Group widget and all of its children. More...
virtual	~Fl_Group ()
	The destructor also deletes all the children. More...
Public Member Functions inherited from Fl_Widget
void	_clear_fullscreen ()
void	_set_fullscreen ()
void	activate ()
	Activates the widget. More...
unsigned int	active () const
	Returns whether the widget is active. More...
int	active_r () const
	Returns whether the widget and all of its parents are active. More...
Fl_Align	align () const
	Gets the label alignment. More...
void	align (Fl_Align alignment)
	Sets the label alignment. More...
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. More...
virtual class Fl_Gl_Window *	as_gl_window ()
	Returns an Fl_Gl_Window pointer if this widget is an Fl_Gl_Window. More...
virtual Fl_Window *	as_window ()
	Returns an Fl_Window pointer if this widget is an Fl_Window. More...
Fl_Boxtype	box () const
	Gets the box type of the widget. More...
void	box (Fl_Boxtype new_box)
	Sets the box type for the widget. More...
Fl_Callback_p	callback () const
	Gets the current callback function for the widget. More...
void	callback (Fl_Callback *cb, void *p)
	Sets the current callback function for the widget. More...
void	callback (Fl_Callback *cb)
	Sets the current callback function for the widget. More...
void	callback (Fl_Callback0 *cb)
	Sets the current callback function for the widget. More...
void	callback (Fl_Callback1 *cb, long p=0)
	Sets the current callback function for the widget. More...
unsigned int	changed () const
	Checks if the widget value changed since the last callback. More...
void	clear_active ()
	Marks the widget as inactive without sending events or changing focus. More...
void	clear_changed ()
	Marks the value of the widget as unchanged. More...
void	clear_damage (uchar c=0)
	Clears or sets the damage flags. More...
void	clear_output ()
	Sets a widget to accept input. More...
void	clear_visible ()
	Hides the widget. More...
void	clear_visible_focus ()
	Disables keyboard focus navigation with this widget. More...
Fl_Color	color () const
	Gets the background color of the widget. More...
void	color (Fl_Color bg)
	Sets the background color of the widget. More...
void	color (Fl_Color bg, Fl_Color sel)
	Sets the background and selection color of the widget. More...
Fl_Color	color2 () const
	For back compatibility only. More...
void	color2 (unsigned a)
	For back compatibility only. More...
int	contains (const Fl_Widget *w) const
	Checks if w is a child of this widget. More...
void	copy_label (const char *new_label)
	Sets the current label. More...
void	copy_tooltip (const char *text)
	Sets the current tooltip text. More...
uchar	damage () const
	Returns non-zero if draw() needs to be called. More...
void	damage (uchar c)
	Sets the damage bits for the widget. More...
void	damage (uchar c, int x, int y, int w, int h)
	Sets the damage bits for an area inside the widget. More...
int	damage_resize (int, int, int, int)
	Internal use only. More...
void	deactivate ()
	Deactivates the widget. More...
Fl_Image *	deimage ()
	Gets the image that is used as part of the widget label. More...
const Fl_Image *	deimage () const
void	deimage (Fl_Image *img)
	Sets the image to use as part of the widget label. More...
void	deimage (Fl_Image &img)
	Sets the image to use as part of the widget label. More...
void	do_callback ()
	Calls the widget callback. More...
void	do_callback (Fl_Widget *o, long arg)
	Calls the widget callback. More...
void	do_callback (Fl_Widget *o, void *arg=0)
	Calls the widget callback. More...
void	draw_label (int, int, int, int, Fl_Align) const
	Draws the label in an arbitrary bounding box with an arbitrary alignment. More...
int	h () const
	Gets the widget height. More...
Fl_Image *	image ()
	Gets the image that is used as part of the widget label. More...
const Fl_Image *	image () const
void	image (Fl_Image *img)
	Sets the image to use as part of the widget label. More...
void	image (Fl_Image &img)
	Sets the image to use as part of the widget label. More...
int	inside (const Fl_Widget *wgt) const
	Checks if this widget is a child of wgt. More...
const char *	label () const
	Gets the current label text. More...
void	label (const char *text)
	Sets the current label pointer. More...
void	label (Fl_Labeltype a, const char *b)
	Shortcut to set the label text and type in one call. More...
Fl_Color	labelcolor () const
	Gets the label color. More...
void	labelcolor (Fl_Color c)
	Sets the label color. More...
Fl_Font	labelfont () const
	Gets the font to use. More...
void	labelfont (Fl_Font f)
	Sets the font to use. More...
Fl_Fontsize	labelsize () const
	Gets the font size in pixels. More...
void	labelsize (Fl_Fontsize pix)
	Sets the font size in pixels. More...
Fl_Labeltype	labeltype () const
	Gets the label type. More...
void	labeltype (Fl_Labeltype a)
	Sets the label type. More...
void	measure_label (int &ww, int &hh) const
	Sets width ww and height hh accordingly with the label size. More...
unsigned int	output () const
	Returns if a widget is used for output only. More...
Fl_Group *	parent () const
	Returns a pointer to the parent widget. More...
void	parent (Fl_Group *p)
	Internal use only - "for hacks only". More...
void	position (int X, int Y)
	Repositions the window or widget. More...
void	redraw ()
	Schedules the drawing of the widget. More...
void	redraw_label ()
	Schedules the drawing of the label. More...
Fl_Color	selection_color () const
	Gets the selection color. More...
void	selection_color (Fl_Color a)
	Sets the selection color. More...
void	set_active ()
	Marks the widget as active without sending events or changing focus. More...
void	set_changed ()
	Marks the value of the widget as changed. More...
void	set_output ()
	Sets a widget to output only. More...
void	set_visible ()
	Makes the widget visible. More...
void	set_visible_focus ()
	Enables keyboard focus navigation with this widget. More...
void	size (int W, int H)
	Changes the size of the widget. More...
int	take_focus ()
	Gives the widget the keyboard focus. More...
unsigned int	takesevents () const
	Returns if the widget is able to take events. More...
int	test_shortcut ()
	Returns true if the widget's label contains the entered '&x' shortcut. More...
const char *	tooltip () const
	Gets the current tooltip text. More...
void	tooltip (const char *text)
	Sets the current tooltip text. More...
Fl_Window *	top_window () const
	Returns a pointer to the top-level window for the widget. More...
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. More...
uchar	type () const
	Gets the widget type. More...
void	type (uchar t)
	Sets the widget type. More...
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. More...
void	user_data (void *v)
	Sets the user data for this widget. More...
unsigned int	visible () const
	Returns whether a widget is visible. More...
void	visible_focus (int v)
	Modifies keyboard focus navigation. More...
unsigned int	visible_focus ()
	Checks whether this widget has a visible focus. More...
int	visible_r () const
	Returns whether a widget and all its parents are visible. More...
int	w () const
	Gets the widget width. More...
Fl_When	when () const
	Returns the conditions under which the callback is called. More...
void	when (uchar i)
	Sets the flags used to decide when a callback is called. More...
Fl_Window *	window () const
	Returns a pointer to the nearest parent window up the widget hierarchy. More...
int	x () const
	Gets the widget position in its window. More...
int	y () const
	Gets the widget position in its window. More...
virtual	~Fl_Widget ()
	Destroys the widget. More...

Additional Inherited Members
Public Types inherited from Fl_Browser
enum	Fl_Line_Position { TOP, BOTTOM, MIDDLE }
	For internal use only?
Public Types inherited from Fl_Browser_
enum	{   HORIZONTAL = 1, VERTICAL = 2, BOTH = 3, ALWAYS_ON = 4,   HORIZONTAL_ALWAYS = 5, VERTICAL_ALWAYS = 6, BOTH_ALWAYS = 7 }
	Values for has_scrollbar(). More...
Static Public Member Functions inherited from Fl_Group
static Fl_Group *	current ()
	Returns the currently active group. More...
static void	current (Fl_Group *g)
	Sets the current group. More...
Static Public Member Functions inherited from Fl_Widget
static void	default_callback (Fl_Widget *cb, void *d)
	Sets the default callback for all widgets. More...
static unsigned int	label_shortcut (const char *t)
	Returns the Unicode value of the '&x' shortcut in a given text. More...
static int	test_shortcut (const char *, const bool require_alt=false)
	Returns true if the given text t contains the entered '&x' shortcut. More...
Public Attributes inherited from Fl_Browser_
Fl_Scrollbar	hscrollbar
	Horizontal scrollbar. More...
Fl_Scrollbar	scrollbar
	Vertical scrollbar. More...
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,   USERFLAG3 = 1<<29, USERFLAG2 = 1<<30, USERFLAG1 = 1<<31 }
	flags possible values enumeration. More...
Protected Member Functions inherited from Fl_Browser
FL_BLINE *	_remove (int line)
	Removes the item at the specified line. More...
FL_BLINE *	find_line (int line) const
	Returns the item for specified line. More...
int	full_height () const
	The height of the entire list of all visible() items in pixels. More...
int	incr_height () const
	The default 'average' item height (including inter-item spacing) in pixels. More...
void	insert (int line, FL_BLINE *item)
	Insert specified item above line. More...
void *	item_at (int line) const
	Return the item at specified line. More...
void	item_draw (void *item, int X, int Y, int W, int H) const
	Draws item at the position specified by X Y W H. More...
void *	item_first () const
	Returns the very first item in the list. More...
int	item_height (void *item) const
	Returns height of item in pixels. More...
void *	item_last () const
	Returns the very last item in the list. More...
void *	item_next (void *item) const
	Returns the next item after item. More...
void *	item_prev (void *item) const
	Returns the previous item before item. More...
void	item_select (void *item, int val)
	Change the selection state of item to the value val. More...
int	item_selected (void *item) const
	See if item is selected. More...
void	item_swap (void *a, void *b)
	Swap the items a and b. More...
const char *	item_text (void *item) const
	Returns the label text for item. More...
int	item_width (void *item) const
	Returns width of item in pixels. More...
int	lineno (void *item) const
	Returns line number corresponding to item, or zero if not found. More...
void	swap (FL_BLINE *a, FL_BLINE *b)
	Swap the two items a and b. More...
Protected Member Functions inherited from Fl_Browser_
void	bbox (int &X, int &Y, int &W, int &H) const
	Returns the bounding box for the interior of the list's display window, inside the scrollbars. More...
void	deleting (void *item)
	This method should be used when item is being deleted from the list. More...
int	displayed (void *item) const
	Returns non-zero if item has been scrolled to a position where it is being displayed. More...
void	draw ()
	Draws the list within the normal widget bounding box.
void *	find_item (int ypos)
	This method returns the item under mouse y position ypos. More...
	Fl_Browser_ (int X, int Y, int W, int H, const char *L=0)
	The constructor makes an empty browser. More...
virtual int	full_width () const
	This method may be provided by the subclass to indicate the full width of the item list, in pixels. More...
void	inserting (void *a, void *b)
	This method should be used when an item is in the process of being inserted into the list. More...
virtual int	item_quick_height (void *item) const
	This method may be provided by the subclass to return the height of the item, in pixels. More...
int	leftedge () const
	This method returns the X position of the left edge of the list area after adjusting for the scrollbar and border, if any. More...
void	new_list ()
	This method should be called when the list data is completely replaced or cleared. More...
void	redraw_line (void *item)
	This method should be called when the contents of item has changed, but not its height. More...
void	redraw_lines ()
	This method will cause the entire list to be redrawn. More...
void	replacing (void *a, void *b)
	This method should be used when item a is being replaced by item b. More...
void *	selection () const
	Returns the item currently selected, or NULL if there is no selection. More...
void	swapping (void *a, void *b)
	This method should be used when two items a and b are being swapped. More...
void *	top () const
	Returns the item that appears at the top of the list.
Protected Member Functions inherited from Fl_Group
void	draw ()
	Draws the widget. More...
void	draw_child (Fl_Widget &widget) const
	Forces a child to redraw. More...
void	draw_children ()
	Draws all children of the group. More...
void	draw_outside_label (const Fl_Widget &widget) const
	Parents normally call this to draw outside labels of child widgets. More...
int *	sizes ()
	Returns the internal array of widget sizes and positions. More...
void	update_child (Fl_Widget &widget) const
	Draws a child only if it needs it. More...
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. More...
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. More...
void	draw_focus ()
	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 box for the widget at the given position and size.
void	draw_label () const
	Draws the widget's label at the defined label position. More...
void	draw_label (int, int, int, int) const
	Draws the label in an arbitrary bounding box. More...
	Fl_Widget (int x, int y, int w, int h, const char *label=0L)
	Creates a widget at the given position and size. More...
unsigned int	flags () const
	Gets the widget flags mask.
void	h (int v)
	Internal use only. More...
void	set_flag (unsigned int c)
	Sets a flag in the flags mask.
void	w (int v)
	Internal use only. More...
void	x (int v)
	Internal use only. More...
void	y (int v)
	Internal use only. More...

Detailed Description

The Fl_Hold_Browser is a subclass of Fl_Browser which lets the user select a single item, or no items by clicking on the empty space.

As long as the mouse button is held down the item pointed to by it is highlighted, and this highlighting remains on when the mouse button is released. Normally the callback is done when the user releases the mouse, but you can change this with when().

See Fl_Browser for methods to add and remove lines from the browser.

Constructor & Destructor Documentation

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

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

The default boxtype is FL_DOWN_BOX. The constructor specializes Fl_Browser() by setting the type to FL_HOLD_BROWSER. The destructor destroys the widget and frees all memory that has been allocated.

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

• Fl_Hold_Browser.H
• Fl_Browser.cxx