ONE::gui::Widget Class Reference

Inheritance diagram for ONE::gui::Widget:

[legend]List of all members.

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Detailed Description

a Displayable Control

The widget carries an InputMap which may be used to map input events to actions in a LaF specific way.

Author:

Daniel Seibert

Public Types
typedef ONE::util::ConstIterator< const Widget * >	ChildConstItr
typedef ONE::util::SmartPointer< ChildConstItr, ONE::util::DestructiveCopy >	ChildConstItrSP
typedef ONE::util::Iterator< Widget * >	ChildItr
typedef ONE::util::SmartPointer< ChildItr, ONE::util::DestructiveCopy >	ChildItrSP
Public Member Functions
virtual void	add (Component *comp, const LayoutConstraint *cons)=0
	adds a child
virtual void	clear ()=0
	removes all children
void	draw (Renderer2D *r, const int &x, const int &y, const int &w, const int &h)
	draws a portion of this object
void	draw (Renderer2D *)
	draws this object.
Color	getBackground () const
	accesses the color that should be used to render the object's background.
const Bounds &	getBounds () const
	accesses this object's bounds
virtual int	getChildCount () const =0
virtual ChildConstItrSP	getChildren () const =0
	accesses this object's children
virtual ChildItrSP	getChildren ()=0
	accesses this object's children
virtual const IMSP &	getDefaultInputMap () const
	accesses this widget's default input map
const UIDSP &	getDelegate () const
virtual DelegateID	getDelegateID () const =0
	accesses the ID that identifies the object's UIDelegate type
Color	getDisabledBackground () const
	accesses the color that should be used to render the object's background when the object is disabled
Color	getDisabledForeground () const
	accesses the color that should be used to render the object's foreground when the object is disabled.
Color	getFocus () const
	accesses the color that should be used to render the component focus
Color	getForeground () const
	accesses the color that should be used to render the object's foreground.
const IMSP &	getInputMap () const
virtual Widget *	getParent () const =0
const Point &	getPosition () const
	accesses this object's position
virtual Size	getPreferredSize () const =0
	determines this object's preferred size.
const Size &	getSize () const
	accesses this object's size
virtual bool	hasChildren () const =0
virtual bool	hasFocus () const =0
	checks if this object has the keyboard focus
bool	isEnabled () const
	checks if this widget is enabled
bool	isOpaque () const
	checks this object's opacity
virtual bool	isUnder (const Point &) const
virtual bool	isVisible () const
	acesses the visibility property
virtual void	layout ()=0
	lays out this component's internal elements
virtual void	processKeyEvent (KeyEvent &evt)=0
	notifies the widget of a key event
virtual void	processMouseMotion (MouseEvent &evt)=0
	notifies the widget of a mouse motion
virtual void	processMousePress (MouseEvent &evt)=0
	notifies the widget of a pressed mouse button
virtual void	processMouseRelease (MouseEvent &evt)=0
	notifies the widget of a released mouse button
virtual void	releaseFocus () const =0
	drops the input focus
virtual void	remove (Component *comp)=0
	removes a child
virtual bool	requestFocus ()=0
	attempts to get the input focus for this object
void	scheduleLayout ()
	schedules a call to layout
void	setBackground (const Color &c, bool laf=true)
	changes this object's background color
void	setBounds (const int &x, const int &y, const int &w, const int &h)
void	setBounds (const Bounds &b)
	changes this object's bounds
void	setDisabledBackground (const Color &c, bool laf=true)
	changes this object's disabled background color
void	setDisabledForeground (const Color &c, bool laf=true)
	changes this object's disabled foreground color
virtual void	setEnabled (bool)
	enables or disables this component
void	setFocus (const Color &c, bool laf=true)
	changes the color that will be used to draw the component focus marker
void	setForeground (const Color &c, bool laf=true)
	changes this object's foreground color
void	setInputMap (const IMSP &im, bool laf=true)
void	setOpaque (bool o, bool laf=true)
	changes this object's opacity
void	setPosition (const int &x, const int &y)
void	setPosition (const Point &p)
	changes this object's position
void	setPreferredSize (const Size &s)
	sets the object's preferred size
void	setSize (const int &w, const int &h)
void	setSize (const Size &s)
	changes this object's size
virtual void	setVisible (bool vis)
virtual void	updateUI ()
	Widget (bool visible=true)
virtual	~Widget ()
Protected Types
typedef unsigned int	bits
Protected Member Functions
virtual void	doDraw (Renderer2D *r, const int &x, const int &y, const int &w, const int &h)=0
	performs subclass-specific drawing
bool	getBit (const bits &bit) const
void	setBit (const bits &bit, bool val)
Protected Attributes
Size	prefSize
Static Protected Attributes
static const bits	ENABLED
static const bits	LSCHED
	set when this object is scheduled to be laid out
static const bits	OPQ
	opacity bit
static const bits	VIS
	visibility bit

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Member Typedef Documentation

typedef unsigned int ONE::gui::Displayable::bits [protected, inherited]

typedef ONE::util::ConstIterator<const Widget*> ONE::gui::Widget::ChildConstItr

typedef ONE::util::SmartPointer<ChildConstItr,ONE::util::DestructiveCopy> ONE::gui::Widget::ChildConstItrSP

typedef ONE::util::Iterator<Widget*> ONE::gui::Widget::ChildItr

typedef ONE::util::SmartPointer<ChildItr,ONE::util::DestructiveCopy> ONE::gui::Widget::ChildItrSP

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Constructor & Destructor Documentation

ONE::gui::Widget::Widget (  bool  visible = true  )

virtual ONE::gui::Widget::~Widget (   )  [virtual]

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Member Function Documentation

virtual void ONE::gui::Widget::add (  Component *  comp, const LayoutConstraint *  cons )  [pure virtual]

adds a child Implemented in ONE::gui::Component, ONE::gui::Panel, and ONE::gui::Window.

virtual void ONE::gui::Widget::clear (   )  [pure virtual]

removes all children Implemented in ONE::gui::Component, ONE::gui::Panel, and ONE::gui::Window.

virtual void ONE::gui::Displayable::doDraw (  Renderer2D *  r, const int &  x, const int &  y, const int &  w, const int &  h )  [protected, pure virtual, inherited]

performs subclass-specific drawing Implementations of this function may assume that this object is visible and that r is in 2D mode. Parameters: r  the renderer used to draw this object x  the left edge of the drawable area y  the top edge of the drawable are w  the width of the drawable area h  the height of the drawable are Implemented in ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::Picture, ONE::gui::ScrollBar, ONE::gui::ScrollBarSlider, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

void ONE::gui::Displayable::draw (  Renderer2D *  r, const int &  x, const int &  y, const int &  w, const int &  h )  [inherited]

draws a portion of this object This function calls doDraw(Renderer2D*,int,int,int,int) if this object is set to visible. Note that the renderer must be active in 2D mode. Parameters: r  the renderer used to draw this object x  the left edge of the drawn area y  the top edge of the drawn are w  the width of the drawn area h  the height of the drawn are

void ONE::gui::Displayable::draw (  Renderer2D *   )  [inline, inherited]

draws this object. This function calls draw(Renderer2D*,int,int,int,int) with this object's bounds.

Color ONE::gui::Displayable::getBackground (   )  const [inline, inherited]

accesses the color that should be used to render the object's background. Returns: a color

bool ONE::gui::Displayable::getBit (  const bits &  bit  )  const [inline, protected, inherited]

const Bounds & ONE::gui::Displayable::getBounds (   )  const [inline, inherited]

accesses this object's bounds The Bounds object represents the position of the top left corner as well as the size of this object's bounding rectangle. Returns: this object's bounds

virtual int ONE::gui::Widget::getChildCount (   )  const [pure virtual]

Returns: the number of child Widget s Implemented in ONE::gui::Component, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Panel, ONE::gui::ScrollBar, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual ChildConstItrSP ONE::gui::Widget::getChildren (   )  const [pure virtual]

accesses this object's children If this object has no children, this function must return 0. If children overlap, the returned iterator must traverse them in front to back order. The returned children may not be modified. Returns: an iterator that goes through all of this widget's children in front to back order or 0 if this widget has no children Implemented in ONE::gui::Component, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Panel, ONE::gui::ScrollBar, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual ChildItrSP ONE::gui::Widget::getChildren (   )  [pure virtual]

accesses this object's children If this object has no children, this function must return 0. If children overlap, the returned iterator must traverse them in front to back order. The returned children may be modified. Returns: an iterator that goes through all of this widget's children in front to back order or 0 if this widget has no children Implemented in ONE::gui::Component, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Panel, ONE::gui::ScrollBar, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual const IMSP& ONE::gui::Widget::getDefaultInputMap (   )  const [virtual]

accesses this widget's default input map The default implementation returns an empty map. Subclasses may override this function in order to specify a different default map. Returns: the widget's default input map Reimplemented in ONE::gui::AbstractButton, ONE::gui::CommandField, ONE::gui::Frame, ONE::gui::List, and ONE::gui::ScrollBarSlider.

const UIDSP & ONE::gui::Displayable::getDelegate (   )  const [inline, inherited]

virtual DelegateID ONE::gui::Displayable::getDelegateID (   )  const [pure virtual, inherited]

accesses the ID that identifies the object's UIDelegate type Subclasses of this class must override this function in order to receive a proper delegate. See LookAndFeel for details. Returns: the delegate id Implemented in ONE::gui::Button, ONE::gui::CheckBox, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::Picture, ONE::gui::RadioButton, ONE::gui::ScrollBar, ONE::gui::ScrollBarSlider, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::ToggleButton, ONE::gui::Viewport, and ONE::gui::Window.

Color ONE::gui::Widget::getDisabledBackground (   )  const [inline]

accesses the color that should be used to render the object's background when the object is disabled Returns: a color

Color ONE::gui::Widget::getDisabledForeground (   )  const [inline]

accesses the color that should be used to render the object's foreground when the object is disabled. Returns: a color

Color ONE::gui::Widget::getFocus (   )  const [inline]

accesses the color that should be used to render the component focus Returns: a color

Color ONE::gui::Displayable::getForeground (   )  const [inline, inherited]

accesses the color that should be used to render the object's foreground. Returns: a color

const IMSP & ONE::gui::Widget::getInputMap (   )  const [inline]

virtual Widget* ONE::gui::Widget::getParent (   )  const [pure virtual]

Returns: this object's parent Implemented in ONE::gui::Component, and ONE::gui::Window.

const Point & ONE::gui::Displayable::getPosition (   )  const [inline, inherited]

accesses this object's position Returns: the position of this object's top left corner

virtual Size ONE::gui::Displayable::getPreferredSize (   )  const [pure virtual, inherited]

determines this object's preferred size. If this object has a non-degenerate preferred size (i.e. Size::isZero returns false), that value is returned. Otherwise, this function calculates the optimal size for this object. Implemented in ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::Picture, ONE::gui::ScrollBar, ONE::gui::ScrollBarSlider, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

const Size & ONE::gui::Displayable::getSize (   )  const [inline, inherited]

accesses this object's size Returns: the size of this object's bounding rectangle

virtual bool ONE::gui::Widget::hasChildren (   )  const [pure virtual]

Returns: if this object has children Implemented in ONE::gui::Component, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Panel, ONE::gui::ScrollBar, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual bool ONE::gui::Control::hasFocus (   )  const [pure virtual, inherited]

checks if this object has the keyboard focus Returns: true if this object has the input focus, false otherwise Implemented in ONE::gui::Component, and ONE::gui::TopLevel.

bool ONE::gui::Widget::isEnabled (   )  const [inline, virtual]

checks if this widget is enabled Returns: true if is enabled, false otherwise Implements ONE::gui::Control.

bool ONE::gui::Displayable::isOpaque (   )  const [inline, inherited]

checks this object's opacity objects that are set to not opaque (i.e. transparent) should not draw their background display. Returns: if this object is set to opaque

virtual bool ONE::gui::Widget::isUnder (  const Point &   )  const [virtual]

This implementation checks if the given point is within the widget's bounds and then queries the delegate. Implements ONE::gui::Control. Reimplemented in ONE::gui::Picture.

bool ONE::gui::Displayable::isVisible (   )  const [inline, virtual, inherited]

acesses the visibility property The default value is true. However, subclasses may choose to change this. Returns: true if the object is visible

virtual void ONE::gui::Displayable::layout (   )  [pure virtual, inherited]

lays out this component's internal elements This function may not change this object's bounds. Implementations should lay out their internal elements according to the currently set bounds. The provided implementation de-schedules layouting for this object. Overriding classes must make sure they call Displayable::layout if not the layout function of their immediate superclass. Implemented in ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::Picture, ONE::gui::ScrollBar, ONE::gui::ScrollBarSlider, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual void ONE::gui::Control::processKeyEvent (  KeyEvent &  evt  )  [pure virtual, inherited]

notifies the widget of a key event If this is not a top level container and the widget processes the event, it must call the events consume function. Otherwise evt will also be passed to this object's top level parent. Implemented in ONE::gui::AbstractButton, ONE::gui::CommandField, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::Picture, ONE::gui::ScrollBar, ONE::gui::ScrollBarSlider, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual void ONE::gui::Control::processMouseMotion (  MouseEvent &  evt  )  [pure virtual, inherited]

notifies the widget of a mouse motion This event may occur both inside and outside of this object's bounds. Implemented in ONE::gui::AbstractButton, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::Picture, ONE::gui::ScrollBar, ONE::gui::ScrollBarSlider, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual void ONE::gui::Control::processMousePress (  MouseEvent &  evt  )  [pure virtual, inherited]

notifies the widget of a pressed mouse button Implementations may assume that the mouse position is on this widget (i.e. isUnder returned true). Implemented in ONE::gui::AbstractButton, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::Picture, ONE::gui::ScrollBar, ONE::gui::ScrollBarSlider, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual void ONE::gui::Control::processMouseRelease (  MouseEvent &  evt  )  [pure virtual, inherited]

notifies the widget of a released mouse button This event may occur both inside and outside of this object's bounds. Implemented in ONE::gui::AbstractButton, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::Picture, ONE::gui::ScrollBar, ONE::gui::ScrollBarSlider, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

virtual void ONE::gui::Control::releaseFocus (   )  const [pure virtual, inherited]

drops the input focus Implemented in ONE::gui::Component, and ONE::gui::TopLevel.

virtual void ONE::gui::Widget::remove (  Component *  comp  )  [pure virtual]

removes a child Implemented in ONE::gui::Component, ONE::gui::Panel, and ONE::gui::Window.

virtual bool ONE::gui::Control::requestFocus (   )  [pure virtual, inherited]

attempts to get the input focus for this object The function may not succeed in acquiring the focus in some situations. For example, calling this function on a top level container while a modal Frame is visible will fail. Returns: if the request was granted Implemented in ONE::gui::Component, and ONE::gui::TopLevel.

void ONE::gui::Displayable::scheduleLayout (   )  [inherited]

schedules a call to layout This function makes component layout more efficient as several calls to this function within one frame duration result in only one call to layout.

void ONE::gui::Displayable::setBackground (  const Color &  c, bool  laf = true )  [inherited]

changes this object's background color The setting is active immediately. If laf is true (the default), the setting is propagated to the GuiManager as an individual setting. Parameters: c  the new background color laf  if the setting should be propagated to the GuiManager

void ONE::gui::Displayable::setBit (  const bits &  bit, bool  val )  [inline, protected, inherited]

void ONE::gui::Displayable::setBounds (  const int &  x, const int &  y, const int &  w, const int &  h )  [inline, inherited]

void ONE::gui::Displayable::setBounds (  const Bounds &  b  )  [inline, inherited]

changes this object's bounds See setSize and setPosition Parameters: b  the new bounds

void ONE::gui::Widget::setDisabledBackground (  const Color &  c, bool  laf = true )

changes this object's disabled background color The setting is active immediately. If laf is true (the default), the setting is propagated to the GuiManager as an individual setting. Parameters: c  the new background color laf  if the setting should be propagated to the GuiManager

void ONE::gui::Widget::setDisabledForeground (  const Color &  c, bool  laf = true )

changes this object's disabled foreground color The setting is active immediately. If laf is true (the default), the setting is propagated to the GuiManager as an individual setting. Parameters: c  the new foreground color laf  if the setting should be propagated to the GuiManager

virtual void ONE::gui::Widget::setEnabled (  bool   )  [virtual]

enables or disables this component Disabled components no longer react to user input. If this object has children, they are modified accordingly. Implements ONE::gui::Control. Reimplemented in ONE::gui::Button, ONE::gui::Console, ONE::gui::Frame, and ONE::gui::TitleBar.

void ONE::gui::Widget::setFocus (  const Color &  c, bool  laf = true )

changes the color that will be used to draw the component focus marker The setting is active immediately. If laf is true (the default), the setting is propagated to the GuiManager as an individual setting. Parameters: c  the new focus color laf  if the setting should be propagated to the GuiManager

void ONE::gui::Displayable::setForeground (  const Color &  c, bool  laf = true )  [inherited]

changes this object's foreground color The setting is active immediately. If laf is true (the default), the setting is propagated to the GuiManager as an individual setting. Parameters: c  the new foreground color laf  if the setting should be propagated to the GuiManager

void ONE::gui::Widget::setInputMap (  const IMSP &  im, bool  laf = true )

void ONE::gui::Displayable::setOpaque (  bool  o, bool  laf = true )  [inherited]

changes this object's opacity The setting is active immediately. If laf is true (the default), the setting is propagated to the GuiManager as an individual setting. Parameters: o  the new opacity setting laf  if the setting should be propagated to the GuiManager

void ONE::gui::Displayable::setPosition (  const int &  x, const int &  y )  [inline, inherited]

void ONE::gui::Displayable::setPosition (  const Point &  p  )  [inline, inherited]

changes this object's position Note that this function does not request a re-layout. Parameters: p  the new position for the object's top left corner

void ONE::gui::Displayable::setPreferredSize (  const Size &  s  )  [inline, inherited]

sets the object's preferred size If the value is set to an empty size object, the component will calculate its preferred size. Parameters: s  the preferred size or a Size object with either a width or a height of 0

void ONE::gui::Displayable::setSize (  const int &  w, const int &  h )  [inline, inherited]

void ONE::gui::Displayable::setSize (  const Size &  s  )  [inline, inherited]

changes this object's size Note that this function does not request a re-layout. Parameters: s  the new size

void ONE::gui::Widget::setVisible (  bool  vis  )  [inline, virtual]

This function releases the input focus if the widget is set to invisible. Reimplemented from ONE::gui::Displayable.

virtual void ONE::gui::Widget::updateUI (   )  [virtual]

Updates the super class and the widget's InputMap. Reimplemented from ONE::gui::Displayable. Reimplemented in ONE::gui::AbstractButton, ONE::gui::CheckBox, ONE::gui::CommandField, ONE::gui::Console, ONE::gui::Frame, ONE::gui::Label, ONE::gui::List, ONE::gui::Panel, ONE::gui::RadioButton, ONE::gui::ScrollBar, ONE::gui::TextField, ONE::gui::TitleBar, ONE::gui::Viewport, and ONE::gui::Window.

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Member Data Documentation

const bits ONE::gui::Widget::ENABLED [static, protected]

const bits ONE::gui::Displayable::LSCHED [static, protected, inherited]

set when this object is scheduled to be laid out

const bits ONE::gui::Displayable::OPQ [static, protected, inherited]

opacity bit

Size ONE::gui::Displayable::prefSize [protected, inherited]

const bits ONE::gui::Displayable::VIS [static, protected, inherited]

visibility bit

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