FLTK 1.3.2

- Main Page
- Related Pages
- Modules
- Classes
- Files

- Class List
- Class Index
- Class Hierarchy
- Class Members

Public Member Functions | Protected Member Functions | List of all members
Fl_Positioner Class Reference

This class is provided for Forms compatibility. More...

`#include <Fl_Positioner.H>`

Inheritance diagram for Fl_Positioner:

## Public Member Functions
| Fl_Positioner (int x, int y, int w, int h, const char *l=0)
| Creates a new Fl_Positioner widget using the given position, size, and label string. More...
int | handle (int)
| Handles the specified event. More...
int | value (double, double)
| Returns the current position in x and y. More...
void | xbounds (double, double)
| Sets the X axis bounds. More...
double | xmaximum () const
| Gets the X axis maximum.
void | xmaximum (double a)
| Same as xbounds(xminimum(), a)
double | xminimum () const
| Gets the X axis minimum.
void | xminimum (double a)
| Same as xbounds(a, xmaximum())
void | xstep (double a)
| Sets the stepping value for the X axis. More...
double | xvalue () const
| Gets the X axis coordinate. More...
int | xvalue (double)
| Sets the X axis coordinate. More...
void | ybounds (double, double)
| Sets the Y axis bounds. More...
double | ymaximum () const
| Gets the Y axis maximum.
void | ymaximum (double a)
| Same as ybounds(ymininimum(), a)
double | yminimum () const
| Gets the Y axis minimum.
void | yminimum (double a)
| Same as ybounds(a, ymaximum())
void | ystep (double a)
| Sets the stepping value for the Y axis. More...
double | yvalue () const
| Gets the Y axis coordinate. More...
int | yvalue (double)
| Sets the Y axis coordinate. 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_Group * | as_group ()
| Returns an Fl_Group pointer if this widget is an Fl_Group. 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_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...
virtual void | hide ()
| Makes a widget invisible. 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...
virtual void | resize (int x, int y, int w, int h)
| Changes the size or position of the widget. More...
Fl_Color | selection_color () const
| Gets the selection color. More...
void | selection_color (Fl_Color a)
| Sets the selection color. More...
void | set_changed ()
| Marks the value of the widget as changed. More...
void | set_normal_keyboard ()
| Marks a widget to use the normal keyboard model. More...
void | set_output ()
| Sets a widget to output only. More...
void | set_simple_keyboard ()
| Marks a widget to use the simple keyboard model. More...
void | set_visible ()
| Makes the widget visible. More...
void | set_visible_focus ()
| Enables keyboard focus navigation with this widget. More...
virtual void | show ()
| Makes a widget visible. More...
unsigned int | simple_keyboard () const
| Returns if the widget sees a simplified keyboard model or not. 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...
uchar | type () const
| Gets the widget type. More...
void | type (uchar t)
| Sets the widget type. More...
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 primary Fl_Window widget. 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...

## Protected Member Functions
void | draw (int, int, int, int)
void | draw ()
| Draws the widget. More...
int | handle (int, int, int, int, int)
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...

## Additional Inherited Members
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...
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, SIMPLE_KEYBOARD = 1<<19, USERFLAG3 = 1<<29, USERFLAG2 = 1<<30, USERFLAG1 = 1<<31 }
| flags possible values enumeration. More...

## Detailed Description

This class is provided for Forms compatibility.

It provides 2D input. It would be useful if this could be put atop another widget so that the crosshairs are on top, but this is not implemented. The color of the crosshairs is selection_color().

## Constructor & Destructor Documentation

Fl_Positioner::Fl_Positioner | ( | int | X,
|  | int | Y,
|  | int | W,
|  | int | H,
|  | const char * | l = `0`
| ) |  |

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

The default boxtype is FL_NO_BOX.

## Member Function Documentation

void Fl_Positioner::draw | ( |  | ) |
| protected virtual

Draws the widget.

Never call this function directly. FLTK will schedule redrawing whenever needed. If your widget must be redrawn as soon as possible, call redraw() instead.

Override this function to draw your own widgets.

If you ever need to call another widget's draw method from within your own draw() method, e.g. for an embedded scrollbar, you can do it (because draw() is virtual) like this:

Fl_Widget *s = &scroll; // scroll is an embedded Fl_Scrollbar
s->draw(); // calls Fl_Scrollbar::draw()

Implements Fl_Widget.

int Fl_Positioner::handle | ( | int | event | ) |
| virtual

Handles the specified event.

You normally don't call this method directly, but instead let FLTK do it when the user interacts with the widget.

When implemented in a widget, this function must return 0 if the widget does not use the event or 1 otherwise.

Most of the time, you want to call the inherited handle() method in your overridden method so that you don't short-circuit events that you don't handle. In this last case you should return the callee retval.

Parameters

  [in] | event | the kind of event received

Return values

  0 | if the event was not used or understood
  1 | if the event was used and can be deleted

See Also
  Fl_Event

Reimplemented from Fl_Widget.

int Fl_Positioner::value | ( | double | X,
|  | double | Y
| ) |  |

Returns the current position in x and y.

void Fl_Positioner::xbounds | ( | double | a,
|  | double | b
| ) |  |

Sets the X axis bounds.

void Fl_Positioner::xstep | ( | double | a | ) |
| inline

Sets the stepping value for the X axis.

double Fl_Positioner::xvalue | ( |  | ) | const
| inline

Gets the X axis coordinate.

int Fl_Positioner::xvalue | ( | double | X | ) |

Sets the X axis coordinate.

void Fl_Positioner::ybounds | ( | double | a,
|  | double | b
| ) |  |

Sets the Y axis bounds.

void Fl_Positioner::ystep | ( | double | a | ) |
| inline

Sets the stepping value for the Y axis.

double Fl_Positioner::yvalue | ( |  | ) | const
| inline

Gets the Y axis coordinate.

int Fl_Positioner::yvalue | ( | double | Y | ) |

Sets the Y axis coordinate.

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

- Fl_Positioner.H
- Fl_Positioner.cxx

- © 1998-2012 by Bill Spitzak and others.