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os::Menu Class Reference

#include <menu.h>

Inheritance diagram for os::Menu::

List of all members.

Public Methods
	Menu (Rect cFrame, const char *pzName, MenuLayout_e eLayout, uint32 nResizeMask=CF_FOLLOW_LEFT|CF_FOLLOW_RIGHT|CF_FOLLOW_TOP, uint32 nFlags=WID_WILL_DRAW|WID_CLEAR_BACKGROUND|WID_FULL_UPDATE_ON_RESIZE)
	~Menu ()
int	Lock (void) const
void	Unlock (void) const
virtual void	TimerTick (int nID)
	Timer dispatch member. More...
void	AttachedToWindow (void)
void	DetachedFromWindow (void)
void	WindowActivated (bool bIsActive)
	Hook called when the window hosting this view gain or loose focus. More...
Point	GetPreferredSize (bool bLargest) const
virtual void	MouseDown (const Point &cPosition, uint32 nButtons)
	Hook called by the system when a mouse button is pressed. More...
virtual void	MouseUp (const Point &cPosition, uint32 nButtons, Message *pcData)
	Hook called by the system when a mouse button is release. More...
virtual void	MouseMove (const Point &cNewPos, int nCode, uint32 nButtons, Message *pcData)
	Hook called by the system when the mouse is moved. More...
virtual void	KeyDown (const char *pzString, const char *pzRawString, uint32 nQualifiers)
	Hook called by the system when a key is pressed while the view has focus. More...
virtual void	FrameSized (const Point &cDelta)
	Virtual hook called by the system when the view is resized. More...
virtual void	Paint (const Rect &cUpdateRect)
	Called by the system update "damaged" areas of the view. More...
std::string	GetLabel () const
MenuLayout_e	GetLayout () const
bool	AddItem (const char *pzLabel, Message *pcMessage)
bool	AddItem (MenuItem *pcItem)
bool	AddItem (MenuItem *pcItem, int nIndex)
bool	AddItem (Menu *pcItem)
bool	AddItem (Menu *pcItem, int nIndex)
MenuItem *	RemoveItem (int nIndex)
bool	RemoveItem (MenuItem *pcItem)
bool	RemoveItem (Menu *pcMenu)
MenuItem *	GetItemAt (int nIndex) const
MenuItem *	GetItemAt (Point cPos) const
Menu *	GetSubMenuAt (int nIndex) const
int	GetItemCount (void) const
int	GetIndexOf (MenuItem *pcItem) const
int	GetIndexOf (Menu *pcMenu) const
MenuItem *	FindItem (int nCode) const
MenuItem *	FindItem (const char *pzName) const
virtual status_t	SetTargetForItems (Handler *pcTarget)
virtual status_t	SetTargetForItems (Messenger cMessenger)
MenuItem *	FindMarked () const
Menu *	GetSuperMenu () const
MenuItem *	GetSuperItem ()
void	InvalidateLayout ()
void	SetCloseMessage (const Message &cMsg)
void	SetCloseMsgTarget (const Messenger &cTarget)
MenuItem *	Track (const Point &cScreenPos)
void	Open (Point cScrPos)
Friends
class	MenuItem

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Detailed Description

Description:

See also:

Author:

Kurt Skauen (kurt@atheos.cx)

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Constructor & Destructor Documentation

Menu::Menu (  Rect cFrame, const char * pzTitle, MenuLayout_e eLayout, uint32 nResizeMask = CF_FOLLOW_LEFT | CF_FOLLOW_RIGHT | CF_FOLLOW_TOP, uint32 nFlags = WID_WILL_DRAW | WID_CLEAR_BACKGROUND | WID_FULL_UPDATE_ON_RESIZE )

Menu::~Menu (  )

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Member Function Documentation

bool Menu::AddItem (  Menu * pcMenu, int nIndex )

bool Menu::AddItem (  Menu * pcMenu )

bool Menu::AddItem (  MenuItem * pcItem, int nIndex )

bool Menu::AddItem (  MenuItem * pcItem )

bool Menu::AddItem (  const char * pzLabel, Message * pcMessage )

void Menu::AttachedToWindow (  void )  [virtual]

Reimplemented from os::View.

void Menu::DetachedFromWindow (  void )  [virtual]

Reimplemented from os::View.

MenuItem * Menu::FindItem (  const char * pzName )  const

MenuItem * Menu::FindItem (  int nCode )  const

MenuItem * Menu::FindMarked (  )  const

void Menu::FrameSized (  const Point & cDelta )  [virtual]

Description: Overload this member if you need to know when the view is resized. Note: This member is called after the view is resized. If you need the old size you can subtract the cDelta calue from the current size. Parameters: cDelta   The distance the bottom/right corner was moved relative to the upper/left corner. See also: FrameMoved(), SetFrame, ResizeBy(), ResizeTo() Author: Kurt Skauen (kurt@atheos.cx) Reimplemented from os::View.

int Menu::GetIndexOf (  Menu * pcMenu )  const

int Menu::GetIndexOf (  MenuItem * pcItem )  const

MenuItem * Menu::GetItemAt (  Point cPosition )  const

MenuItem * Menu::GetItemAt (  int nIndex )  const

int Menu::GetItemCount (  void )  const

std::string Menu::GetLabel (  )  const

MenuLayout_e Menu::GetLayout (  )  const

Point Menu::GetPreferredSize (  bool bLargest )  const [virtual]

Reimplemented from os::View.

Menu * Menu::GetSubMenuAt (  int nIndex )  const

MenuItem * Menu::GetSuperItem (  )

Menu * Menu::GetSuperMenu (  )  const

void Menu::InvalidateLayout (  )

void Menu::KeyDown (  const char * pzString, const char * pzRawString, uint32 nQualifiers )  [virtual]

Description: Overload this member if your view need to handle keyboard input. This member is called to allow the view to handle M_KEY_DOWN messages. The most common members are exctracted from the message and passed as parameters but you might need to obtain the raw message with os::Looper::GetCurrentMessage() and find some members yourself if you the data you needed are not passed in. For example if you need the raw key-code for the pressed key you will have to lookup the "_raw_key" member from the message. Parameters: pzString   String containing a single UTF-8 encoded character. This is the character generated by the pressed key according to the current keymap accounting for any qualifiers that might be pressed. pzRawString   Same as pzString except that the key is converted without accounting for qualifiers. Ie. if 'A' is pressed while pressing <SHIFT> pzString will contain 'A' and pzRawString will contain 'a'. nQualifiers   Bitmask describing which qualifiers that was active when the key was pressed. See also: KeyUp(), os::Looper::GetCurrentMessage() Author: Kurt Skauen (kurt@atheos.cx) Reimplemented from os::View.

int Menu::Lock (  void )  const

void Menu::MouseDown (  const Point & cPosition, uint32 nButtons )  [virtual]

Description: This member is called from the window thread whenever a mouse button is clicked above the view. You can overload this member if your view need to know about mouse-down events. A view will not automatically take focus when clicked so if you want that behaviour you must call MakeFocus() from an overloaded version of this member. The default implementation of this member will call MouseDown() on it's parent view if one exists. Parameters: cPosition   Mouse position in the views coordinate system at the time the mouse was pressed. nButtons   Index of the pressed button. Buttons start at 1 for the left button, 2 for the right button, 3 for the middle button. Additional buttons might be supported by the mouse driver and will then be assigned numbers from 4 and up. See also: MouseUp(), MouseMove(), WheelMoved() Author: Kurt Skauen (kurt@atheos.cx) Reimplemented from os::View.

void Menu::MouseMove (  const Point & cPosition, int nCode, uint32 nButtons, Message * pcData )  [virtual]

Description: This member is called from the window thread whenever the mouse is moved above the view or if the view have focus. Oveload this member if your view need to handle mouse-move events. The default implementation of this member will call MouseMove() on it's parent view if one exists. Parameters: cNewPos   New mouse position given in the views coordinate system. nCode   Enter/exit code. This is MOUSE_ENTERED when the mouse first enter the view, MOUSE_EXITED when the mouse leaves the view, MOUSE_INSIDE whenever the mouse move withing the boundary of the view and MOUSE_OUTSIDE when the mouse move outside the view (will only happen if the view have focus). nButtons   Bitmask telling which buttons that are currently pressed. Bit 0 is button 1 (left), bit 1 is button 2 (right), and bit 2 is button 3 (middle), and so on. pcData   Pointer to a Message object containing the dragged data if the user is in the middle of a drag and drop operation. Otherwise this pointer is NULL. Look at BeginDrag() for a more detailed description of the drag and drop system. See also: MouseDown(), MouseUp(), WheelMoved(), BeginDrag() Author: Kurt Skauen (kurt@atheos.cx) Reimplemented from os::View.

void Menu::MouseUp (  const Point & cPosition, uint32 nButtons, Message * pcData )  [virtual]

Description: This member is called from the window thread whenever a mouse button is released above the view. You can overload this member if your view need to know about mouse-up events or if your view support drag and drop. If mouse-up was the result of ending a drag and drop operation the pcData member will point to a Message containing the dragged data. Look at BeginDrag() for a more detailed description of the drag and drop system. The default implementation of this member will call MouseDown() on it's parent view if one exists. Parameters: cPosition   Mouse position in the views coordinate system at the time the mouse was pressed. nButtons   Index of the pressed button. Buttons start at 1 for the left button, 2 for the right button, 3 for the middle button. Additional buttons might be supported by the mouse driver and will then be assigned numbers from 4 and up. pcData   Pointer to a Message object containing the dragged data if this mouse-up was the end of a drag and drop operation. If no data was dragged it will be NULL. See also: MouseDown(), MouseMove(), WheelMoved() Author: Kurt Skauen (kurt@atheos.cx) Reimplemented from os::View.

void Menu::Open (  Point cScrPos )

void Menu::Paint (  const Rect & cUpdateRect )  [virtual]

Description: Note: Warning: Parameters: cUpdateRect   A rectangle enclosing all damaged areas. This is just a rough "worst-case", further fine-grained clipping will be performed by the Application Server to avoid updating non-damaged pixels and make the update as fast and flicker-free as possible. See also: Invalidate(), Flush() Author: Kurt Skauen (kurt@atheos.cx) Reimplemented from os::View.

bool Menu::RemoveItem (  Menu * pcMenu )

bool Menu::RemoveItem (  MenuItem * pcItem )

MenuItem * Menu::RemoveItem (  int nIndex )

void Menu::SetCloseMessage (  const Message & cMsg )

void Menu::SetCloseMsgTarget (  const Messenger & cTarget )

status_t Menu::SetTargetForItems (  Messenger cMessenger )  [virtual]

status_t Menu::SetTargetForItems (  Handler * pcTarget )  [virtual]

void Menu::TimerTick (  int nID )  [virtual]

Description: This member will be called by the looper thread when a timer targeting this handler expires. When a timer created with os::Looper::AddTimer() expires the looper thread will lock the looper and call this member on the target for the expired timer. If more than one timers are created it is possible to distinguish them by the timer ID that is assigned to the timer with os::Looper::AddTimer() and that is passed to TimerTick() through the nID parameter. Note: Never do any lenthy operations in any hook members that are called from the looper thread if the looper is involved with the GUI (for example if the looper is a os::Window). The looper will not be able to dispatch messages until the hook returns so spending a long time in this members will make the GUI feel unresponsive. Warning: Parameters: return   Error codes: See also: Author: Kurt Skauen (kurt@atheos.cx) Reimplemented from os::Handler.

MenuItem * Menu::Track (  const Point & cScreenPos )

void Menu::Unlock (  void )  const

void Menu::WindowActivated (  bool bIsActive )  [virtual]

Description: This is a callback member that can be overloaded by derived classes to learn when the window that this view is hosted by is activated and when it is deactivated. The bIsActive parameter tell whether the focus was lost or gained. This member is called whenever the window changes focus independent of whether the view is active or not. Note: This is a hook function that is called by the system to notify about an event. You should never call this member yourself. The window is locked when this member is called. Parameters: bIsActive   - true if the window gain and false if it loose focus. See also: MakeFocus(), Activated() Author: Kurt Skauen (kurt@atheos.cx) Reimplemented from os::View.

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Friends And Related Function Documentation

friend class MenuItem [friend]

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