Color Requester. More...

Inheritance diagram for os::ColorRequester:

Classes
class	Private

Public Member Functions
	ColorRequester (os::Messenger *pcTarget=NULL)

	~ColorRequester ()

void	SetDefaultColor (os::Color32_s)

Public Member Functions inherited from os::Window
	Window (const Rect &cFrame, const String &cName, const String &cTitle, uint32 nFlags=0, uint32 nDesktopMask=CURRENT_DESKTOP)
	Initialize the window. More...

	~Window ()
	Destruct a window. More...

virtual void	FrameMoved (const Point &cDelta)

virtual void	FrameSized (const Point &cDelta)

virtual void	ScreenModeChanged (const IPoint &cNewRes, color_space eColorSpace)
	Called whenever the screenmode changes. More...

virtual void	DesktopActivated (int nDesktop, bool bActive)
	Called whenever the desktop displaying the window will be activated or deactivated. More...

virtual void	DesktopsChanged (uint32 nOldDesktops, uint32 nNewDesktops)

virtual void	WindowsChanged ()
	Called whenever the currently shown windows change. More...

void	SetFlags (uint32 nFlags)

uint32	GetFlags () const

void	SetSizeLimits (const Point &cMinSize, const Point &cMaxSize)
	Limit the minimum and maximum window size. More...

void	SetAlignment (const IPoint &cSize=IPoint(1, 1), const IPoint &cSizeOffset=IPoint(0, 0), const IPoint &cPos=IPoint(1, 1), const IPoint &cPosOffset=IPoint(0, 0))

void	AddChild (View *pcChild, bool bAssignTabOrder=false)
	Add a view to the window. More...

void	RemoveChild (View *pcChild)
	Remove a view from the window. More...

void	MakeFocus (bool bFocus=true)
	Activate/Deactivate the window. More...

void	Close ()

void	Show (bool bMakeVisible=true)
	Hide/Unhide the window. More...

void	Hide ()

bool	IsVisible () const

void	Start ()
	Unlock the window and start the looper thread. More...

void	SetTitle (const String &cTitle)
	Change the window title. More...

String	GetTitle (void) const
	Obtain the current window title. More...

void	SetIcon (Bitmap *pcIcon)
	Change the window icon. More...

Bitmap *	GetIcon (void) const
	Not longer supported. More...

void	Flush ()
	Flush the windows render queue. More...

void	Sync ()
	Flush the render queue, and wait til the rendering is done. More...

View *	FindView (const String &cName) const

View *	FindView (const Point &cPos) const
	Find the view covering a given position on the window. More...

View *	GetFocusChild (void) const

View *	SetFocusChild (View *pcChild)
	Activate a view. More...

void	SetDefaultButton (View *pcView)
	Assign a default button. More...

View *	GetDefaultButton () const
	Return the view assigned as the default button. More...

void	SetDefaultWheelView (View *pcView)

View *	GetDefaultWheelView () const

Rect	GetFrame () const
	Get the windows position and size on the current desktop. More...

Rect	GetBounds () const
	Get the window boundary. More...

void	SetFrame (const Rect &cRect, bool bNotifyServer=true)
	Set the window's position and size. More...

void	MoveBy (const Point &cDelta)
	Move the window relative to it's current position. More...

void	MoveBy (float vDeltaX, float vDeltaY)
	Move the window relative to it's current position. More...

void	MoveTo (const Point &cPos)
	Move the window to an absolute position. More...

void	MoveTo (float x, float y)
	Move the window to an absolute position. More...

void	CenterInWindow (Window *pcWin)
	Move the window to the centre of another window. More...

void	CenterInScreen ()
	Move the window to the center of the screen. More...

void	ResizeBy (const Point &cDelta)
	Resize the window relative to it's current size. More...

void	ResizeBy (float vDeltaW, float vDeltaH)
	Resize the window relative to it's current size. More...

void	ResizeTo (const Point &cSize)
	Resize the window to a new absolute size. More...

void	ResizeTo (float w, float h)
	Resize the window to a new absolute size. More...

void	SetShapeRegion (const Region &cReg)

void	ClearShapeRegion ()

bool	IsActive () const

int	ToggleDepth ()

void	AddShortcut (const ShortcutKey &cKey, Message *pcMsg)
	Add a keyboard shortcut. More...

void	AddShortcut (const ShortcutKey &cKey, View *pcView)
	Add a keyboard shortcut. More...

void	RemoveShortcut (const ShortcutKey &cKey)
	Remove a keyboard shortcut. More...

void	DispatchMessage (Message pcMessage, Handler pcHandler)
	The loopers message handling callback. More...

Public Member Functions inherited from os::Looper
	Looper (const String &cName, int nPriority=NORMAL_PRIORITY, int nPortSize=DEFAULT_PORT_SIZE)
	The looper constructor. More...

virtual	~Looper ()
	Looper destructor. More...

void	SetName (const String &cName)
	Rename the looper. More...

String	GetName () const
	Get the loopers name. More...

bool	IsPublic () const
	See if the looper's message port is public. More...

void	SetPublic (bool bPublic)
	Make port public/private. More...

port_id	GetMsgPort () const
	Obtain the low-level message port used by this looper. More...

thread_id	GetThread () const
	Obtain the thread id of the looper thread. More...

proc_id	GetProcess () const
	Obtain the process ID of the loopers thread. More...

status_t	Lock ()
	Lock the looper object. More...

status_t	Lock (bigtime_t nTimeout)
	Lock the looper with a timeout. More...

status_t	SafeLock ()
	Attempt to lock the looper. More...

status_t	Unlock ()
	Unlock the looper. More...

void	SetMutex (Locker *pcMutex)
	Set a custom mutex to be used by the looper. More...

Locker *	GetMutex () const
	Get a pointer to the loopers mutex. More...

int	GetLockCount () const
	Obtain the number of locks held on the looper. More...

thread_id	GetLockingThread () const
	Obtaing the owner of the looper lock. More...

bool	IsLocked () const
	Check if the looper lock is owned by the calling thread. More...

virtual thread_id	Run ()
	Start and unlock the looper. More...

int	Wait () const
	Wait for the looper thread to die. More...

status_t	PostMessage (uint32 nCode)
	Deliver a message to the looper. More...

status_t	PostMessage (Message *pcMsg)
	Deliver a message to the looper. More...

status_t	PostMessage (uint32 cCode, Handler pcHandler, Handler pcReplyTo=NULL)
	Deliver a message to the looper. More...

status_t	PostMessage (Message pcMsg, Handler pcHandler, Handler *pcReplyTo=NULL)
	Deliver a message to the looper. More...

void	SpoolMessages ()
	Drain the low-level message port. More...

Message *	GetCurrentMessage () const
	Obtain the message currently being processed. More...

Message *	DetachCurrentMessage ()
	Steal the current message. More...

virtual void	Started ()
	Called by the looper thread before entering the message loop. More...

virtual bool	Idle ()
	Hook called each time the message queue is drained. More...

MessageQueue *	GetMessageQueue () const
	Obtain the internal message queue used by the looper. More...

virtual void	Quit ()
	Unconditionally terminate the looper. More...

void	Terminate ()
	Unconditionally terminate the looper. More...

void	AddTimer (Handler *pcTarget, int nID, bigtime_t nTimeout, bool bOneShot=true)
	Add a timer to the looper. More...

bool	RemoveTimer (Handler *pcTarget, int nID)
	Delete a timer. More...

const handler_map &	GetHandlerMap () const
	Get the internal handler list. More...

void	AddHandler (Handler *pcHandler)
	Add a handler to the looper. More...

bool	RemoveHandler (Handler *pcHandler)
	Remove a handler previously added by AddHandler() More...

Handler *	FindHandler (const String &cName) const
	Search the looper for a named handler. More...

int	GetHandlerCount () const
	Obtain the count of handlers added to this looper. More...

void	SetDefaultHandler (Handler *pcHandler)
	Set the default target for incomming messages. More...

Handler *	GetDefaultHandler () const
	Obtain the default handler for the looper. More...

void	AddCommonFilter (MessageFilter *pcFilter)

void	RemoveCommonFilter (MessageFilter *pcFilter)

const MsgFilterList &	GetCommonFilterList () const

Public Member Functions inherited from os::Handler
	Handler (const String &cName)
	Construct a handler. More...

virtual	~Handler ()
	Destructor. More...

virtual void	TimerTick (int nID)
	Timer dispatch member. More...

String	GetName () const
	Get the handlers name. More...

void	SetName (const String &cName)
	Rename the handler. More...

Looper *	GetLooper () const
	Get a pointer to the looper this handler belongs to. More...

void	SetNextHandler (Handler *pcNextHandler)
	Set a handler that should handle messages this handler is not interrested in. More...

Handler *	GetNextHandler () const
	Get the next handler in a handler chain. More...

void	AddFilter (MessageFilter *pcFilter)

void	RemoveFilter (MessageFilter *pcFilter)

const MsgFilterList &	GetFilterList () const

const uint32	GetToken ()
	Get the handlers token. More...

Protected Member Functions
virtual void	HandleMessage (os::Message *)
	Handle a message targeted at this handler. More...

bool	OkToQuit ()
	Check if it is ok to break the loop. More...

Additional Inherited Members
Public Types inherited from os::Looper
typedef std::map< int, Handler * >	handler_map

Static Public Member Functions inherited from os::Looper
static Looper *	GetLooperForThread (thread_id hThread)

Detailed Description

Description:: The Color Requester is the default way to pick colors in Syllable. The Color Requester is very easy to use. The following messages are sent to the given message target: M_COLOR_REQUESTER_CANCELED - If the ColorRequester is closed without any action. M_COLOR_REQUESTED - If a Color has been selected to be loaded. M_COLOR_REQUESTER_CHANGED - The use of this message will allow you to determine when the user has changed the color. This can be used to show the color to the user without having them commit to any changes/

Warning:: As with all libSyllable objects, don't use the ColorRequester without an application object.

Note:: The ColorRequester is sent an os::Messenger telling it where to send its messages to. If you send NULL to or use the default parameters, the ColorRequester will send all messages to the instance of the application calling it.

Note:: The ColorRequester is centered in the middle of the screen by default, you can override this at anytime after calling an instance of the dialog.

Example:: ColorRequester* pcColorRequester = new ColorRequester(NULL);

pcColorRequester->Show();

...

MyApplication::HandleMessage(Message* pcMessage)

{

switch (pcMessage->GetCode())

{

case M_COLOR_REQUESTED:

{

os::Color32_s sColor

pcMessage->FindColor("color",&sColor); //get the color from the requester and then do anything you want with it

pcMyView->SetBgColor(sColor);

break;

}

//this message is useful if you want to update a gui without hitting the okay button

case M_COLOR_REQUESTER_CHANGED:

{

os::Color32_s sColor

pcMessage->FindColor("color",&sColor); //get the color from the requester and then do anything you want with it

pcMyView->SetBgColor(sColor);

break;

}

case M_COLOR_REQUESTER_CANCELED:

{

break; //do whatever you need to do when cancelled is called.

}

}

}

See Also: os::Color32_s, os::Message, os::Application, os::Window, os::FileRequester, os::FontRequester, os::Messenger

Author: Rick Caudill rick@.nosp@m.syll.nosp@m.able..nosp@m.org

Constructor & Destructor Documentation

ColorRequester::ColorRequester ( os::Messenger * pcTarget = NULL )

ColorRequester::~ColorRequester ( )

Member Function Documentation

void ColorRequester::HandleMessage ( os::Message * pcMessage )

protectedvirtual

Description:: Overload this member to dispatch messages sendt to this handler. When a looper receives a message for one of it's handlers it will call the taget handlers HandleMessage() to allow the handler to dispatch the message.

: The message passed in pcMessage is also available through os::Looper::GetCurrentMessage() and os::Looper::DetachCurrentMessage() until this member returns. This is normally not very usefull for HandleMessage() itself but it can be convinient for other members called from HandleMessage() in case they need data from the message that was not passed on from HandleMessage().

: The looper will be locked when this member is called. The default implementation of this member will pass the message on to the next handler if one was set with SetNextHandler().

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.

Parameters

pcMessage The message that should be handled. This message will be deleted by the looper when HandleMessage() returns unless you detach it with os::Looper::DetachCurrentMessage(),

See Also: os::Looper::DispatchMessage(), os::Looper::DetachCurrentMessage()

Author: Kurt Skauen (kurt@.nosp@m.athe.nosp@m.os.cx)

Reimplemented from os::Handler.

References os::Message::AddColor32(), os::Message::AddPointer(), os::Variant::AsColor32(), os::Message::GetCode(), os::Control::GetValue(), os::Handler::HandleMessage(), os::M_COLOR_REQUESTED, os::M_COLOR_REQUESTER_CANCELED, os::M_COLOR_REQUESTER_CHANGED, os::ColorRequester::Private::m_pcSelector, os::ColorRequester::Private::m_pcTarget, os::Handler::Message, os::Messenger::SendMessage(), and os::Window::Show().

bool ColorRequester::OkToQuit ( void )

protectedvirtual

Description:: You can overload this function to affect how the looper will react to M_QUIT messages. When an M_QUIT message arrive the looper will call this function to figure out what to do. If it returns false the message is ignored. If it returns true the loop is terminated, the looper object deleted and the looper thread will exit.

Returns: true if it is ok to terminate the looper, false otherwise.

See Also: Quit(), PostMessage()

Author: Kurt Skauen (kurt@.nosp@m.athe.nosp@m.os.cx)

Reimplemented from os::Looper.

References os::Message::AddPointer(), os::M_COLOR_REQUESTER_CANCELED, os::ColorRequester::Private::m_pcTarget, os::Handler::Message, os::Messenger::SendMessage(), and os::Window::Show().

void os::ColorRequester::SetDefaultColor ( os::Color32_s )

Classes

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation