LegoMeterPresenter Class Reference

Presenter class for displaying and updating a graphical meter element, such as a progress bar or health bar, with support for different fill directions and variable-driven values. More...

#include <legometerpresenter.h>

Inheritance diagram for LegoMeterPresenter:

Collaboration diagram for LegoMeterPresenter:

Public Member Functions
	LegoMeterPresenter ()
	Constructs a LegoMeterPresenter with default options (left to right fill, zero percent, no pixels allocated). More...
	~LegoMeterPresenter () override
	Destructor for LegoMeterPresenter. More...
void	StreamingTickle () override
	[AI] Performs initialization of the meter on first streaming update, copying original bitmap data and setting up dimensions. More...
void	RepeatingTickle () override
	[AI] Called every frame in the 'repeating' tickle phase, updates and redraws the meter based on current variable value. More...
void	ParseExtra () override
	[AI] Parses the "extra" data chunk attached to this presenter for dynamic meter configuration. More...
Public Member Functions inherited from MxStillPresenter
	MxStillPresenter ()
	[AI] Constructs an MxStillPresenter. More...
	~MxStillPresenter () override
	[AI] Destructor—ensures resource cleanup of bitmap information and other associated memory. More...
void	Destroy () override
	[AI] Destroys the presenter's resources, optionally called by the destructor for complete cleanup. More...
const char *	ClassName () const override
	[AI] Returns the class name of this presenter type. More...
MxBool	IsA (const char *p_name) const override
	[AI] Run-time type check against the provided type name. More...
void	StartingTickle () override
	[AI] Handles transition to the starting state of the presenter, processing palette realization if needed. More...
void	StreamingTickle () override
	[AI] Main frame advancing logic, loads the next frame if the elapsed time is appropriate. More...
void	RepeatingTickle () override
	[AI] Repetition tickle logic—handles repeated action/time-based state changes. More...
void	ParseExtra () override
	[AI] Parses extra action data for bitmap configuration, such as visibility or image mapping, from the associated DSAction. More...
void	Enable (MxBool p_enable) override
	[AI] Sets the enabled/disabled state of the presenter, updating the video manager's rendering as needed. More...
void	LoadHeader (MxStreamChunk *p_chunk) override
	[AI] Loads header chunk data into the presenter's bitmap info buffer (BITMAPINFO structure). More...
void	CreateBitmap () override
	[AI] Allocates and constructs the bitmap from internal bitmap info, importing palette and image layout information. More...
void	NextFrame () override
	[AI] Loads the next single image frame from the stream and updates the presenter's display state. More...
void	LoadFrame (MxStreamChunk *p_chunk) override
	[AI] Copies frame image data from chunk to presenter's bitmap and prepares for rendering, including palette and alpha mask if necessary. More...
void	RealizePalette () override
	[AI] Realizes/updates the palette in the current video environment using the frame bitmap and notifies the video manager. More...
virtual void	SetPosition (MxS32 p_x, MxS32 p_y)
	[AI] Sets the pixel-based position of the presented image. More...
virtual MxStillPresenter *	Clone ()
	[AI] Clones the presenter, attempting to fully duplicate internal state and associated memory resources. More...
Public Member Functions inherited from MxVideoPresenter
	MxVideoPresenter ()
	Constructs a new MxVideoPresenter and initializes internal state. More...
virtual void	LoadHeader (MxStreamChunk *p_chunk)
	Loads and processes header information from a video stream chunk. More...
virtual void	CreateBitmap ()
	Allocates and sets up the display bitmap for video frame data. More...
virtual void	NextFrame ()
	Advances video playback to the next frame, handling decoding and playback progression. More...
virtual void	LoadFrame (MxStreamChunk *p_chunk)
	Loads and processes frame data from a video stream chunk. More...
virtual void	PutFrame ()
	Presents the current frame using the chosen output mechanism (e.g., blitting to screen). More...
virtual void	RealizePalette ()
	Loads or establishes the palette for display from the current video format or media. More...
virtual undefined	VTable0x74 ()
	Unknown/potentially format-specific method (VTable0x74). More...
	~MxVideoPresenter () override
	Destroys the MxVideoPresenter, releasing owned resources and unregistering from the manager. More...
void	Destroy () override
	Destroys internal resources for the presenter. More...
virtual LPDIRECTDRAWSURFACE	VTable0x78 ()
	Retrieves the DirectDraw surface used for hardware-accelerated rendering. More...
virtual MxBool	VTable0x7c ()
	Checks if this presenter has either a video frame bitmap or alpha mask available. More...
virtual MxS32	GetWidth ()
	Returns the width of the current bitmap or alpha mask in pixels. More...
virtual MxS32	GetHeight ()
	Returns the height of the current bitmap or alpha mask in pixels. More...
const char *	ClassName () const override
	Returns the run-time class name of this presenter instance. More...
MxBool	IsA (const char *p_name) const override
	Determines if this object is or derives from a class with the given name. More...
void	ReadyTickle () override
	Advance logic for the "ready" tickle state. More...
void	StartingTickle () override
	Advance logic for the "starting" tickle state (frame setup). More...
void	StreamingTickle () override
	Advance logic for the "streaming" tickle state (typical video playback). More...
void	RepeatingTickle () override
	Advance logic for the "repeating" tickle state (media looping). More...
void	FreezingTickle () override
	Advance logic for the "freezing" tickle state (sustain after playback). More...
MxResult	AddToManager () override
	Adds this presenter to the global video manager. More...
void	EndAction () override
	Signals the end of the current playback action. More...
MxResult	PutData () override
	Writes the frame to the display device if appropriate. More...
MxBool	IsHit (MxS32 p_x, MxS32 p_y) override
	Determines if a point is inside the non-transparent region of frame/alpha. More...
MxS32	PrepareRects (RECT &p_rectDest, RECT &p_rectSrc)
	Utility function to adjust source/dest rectangles to stay within allowed bounds. More...
MxBitmap *	GetBitmap ()
	Returns the frame bitmap currently used for this presenter. More...
AlphaMask *	GetAlphaMask ()
	Returns this presenter's alpha mask for hit testing. More...
MxU8 *	GetBitmapStart (MxS32 p_left, MxS32 p_top)
	Provides a pointer to the start of frame bitmap data at a given coordinate. More...
void	SetBit0 (BOOL p_e)
	Sets internal miscellaneous state flags. More...
void	SetBit1 (BOOL p_e)
void	SetBit2 (BOOL p_e)
void	SetBit3 (BOOL p_e)
void	SetBit4 (BOOL p_e)
BYTE	GetBit0 ()
	Gets internal miscellaneous state flags (bits 0-4). More...
BYTE	GetBit1 ()
BYTE	GetBit2 ()
BYTE	GetBit3 ()
BYTE	GetBit4 ()
Public Member Functions inherited from MxMediaPresenter
	MxMediaPresenter ()
	[AI] Constructs the presenter, initializing all member variables. More...
	~MxMediaPresenter () override
	[AI] Destructor; cleans up and optionally destroys all internal resources as well as the MxDSSubscriber and chunk list/cursor. More...
void	Destroy () override
	[AI] Cleans up internal resources and resets the presenter to an uninitialized state. More...
MxResult	Tickle () override
	[AI] Advances the presenter's state and media stream, if any, by tickling (i.e., updating) components. More...
const char *	ClassName () const override
	[AI] Returns the class name for this presenter (see HandlerClassName()). More...
MxBool	IsA (const char *p_name) const override
	[AI] Returns TRUE if the provided class name matches this class or any of its parents. More...
void	StreamingTickle () override
	[AI] Per-frame update when streaming the media stream. More...
void	RepeatingTickle () override
	[AI] Per-frame update while looping/repeating over known chunks. More...
void	DoneTickle () override
	[AI] Per-frame update for the "done" state; transitions this presenter to idle and ends the action. More...
MxResult	StartAction (MxStreamController *, MxDSAction *) override
	[AI] Begins a new media playback action, wiring up the stream and chunk lists as needed. More...
void	EndAction () override
	[AI] Ends the media playback action, releasing all resources, notifying listeners if necessary. More...
void	Enable (MxBool p_enable) override
	[AI] Enables or disables media stream playback and transitions state as needed. More...
virtual void	LoopChunk (MxStreamChunk *p_chunk)
	[AI] Adds a chunk to the looping chunk list, making it available for repeated playback. More...
MxStreamChunk *	CurrentChunk ()
	[AI] Returns a pointer to the current data chunk at the head of the stream, without consuming it. More...
MxStreamChunk *	NextChunk ()
	[AI] Returns the next data chunk in the stream, removing it from the stream queue. More...
Public Member Functions inherited from MxPresenter
	MxPresenter ()
	[AI] Constructor. Initializes internal tickle state and other members. More...
MxResult	Tickle () override
	[AI] Main tickle handler, called periodically to progress presenter's internal state. More...
virtual void	VTable0x14 ()
	[AI] Reserved for future or specialized use in derived classes. More...
virtual void	ReadyTickle ()
	[AI] Handles the transition and setup for the Ready state. Parses extra action data and advances state. More...
virtual void	StartingTickle ()
	[AI] Handles actions required when first starting presentation. Advances to streaming state. More...
virtual void	StreamingTickle ()
	[AI] Handles periodic updates during the streaming/presentation stage. Advances to repeating state. More...
virtual void	RepeatingTickle ()
	[AI] Handles updates when in a repeating (looping) stage. Advances to freezing state. More...
virtual void	FreezingTickle ()
	[AI] Handles updates during the freezing/suspended state. Advances to done state. More...
	~MxPresenter () override
	[AI] Destructor, cleans up resources (base class: does nothing beyond Init). More...
virtual MxResult	AddToManager ()
	[AI] Optional registration with a manager (such as TickleManager); by default does nothing. More...
virtual void	Destroy ()
	[AI] Resets presenter state or cleans up resources after completion/removal. More...
virtual MxResult	StartAction (MxStreamController *, MxDSAction *)
	[AI] Initiates presenter for a new action, setting up context and state. More...
virtual void	EndAction ()
	[AI] Terminates the current action, notifies listeners and resets state. More...
virtual void	SetTickleState (TickleState p_tickleState)
	[AI] Forces the tickle state, advancing to the requested lifecycle stage. More...
virtual MxBool	HasTickleStatePassed (TickleState p_tickleState)
	[AI] Checks if the specified tickle state has ever been passed since last reset. More...
virtual MxResult	PutData ()
	[AI] Allows the presenter to submit pending results or output to the engine. More...
virtual MxBool	IsHit (MxS32 p_x, MxS32 p_y)
	[AI] Returns TRUE if the given (x, y) falls within hit-test bounds for the presenter (e.g. More...
virtual void	Enable (MxBool p_enable)
	[AI] Enables or disables this presenter (controls action flags accordingly). More...
const char *	ClassName () const override
	[AI] Returns the run-time class name for this presenter. More...
MxBool	IsA (const char *p_name) const override
	[AI] Determines if this object is of (or inherits) the specified named class. More...
MxEntity *	CreateEntity (const char *p_defaultName)
	[AI] Creates an entity based on action 'extra' data, or uses the provided default name. More...
void	SendToCompositePresenter (MxOmni *p_omni)
	[AI] Notifies a composite presenter (if one exists) that this presenter wishes to join a group. More...
MxBool	IsEnabled ()
	[AI] Returns whether this presenter is logically enabled (based on the associated action's flags). More...
MxS32	GetCurrentTickleState () const
	[AI] Returns the current tickle state. More...
MxPoint32	GetLocation () const
	[AI] Returns the presenter's screen location (in pixels). More...
MxS32	GetX () const
	[AI] Returns the X coordinate of screen location. More...
MxS32	GetY () const
	[AI] Returns the Y coordinate of screen location. More...
MxS32	GetDisplayZ () const
	[AI] Returns the display Z (depth) order. More...
MxDSAction *	GetAction () const
	[AI] Returns the current action being presented. More...
void	SetAction (MxDSAction *p_action)
	[AI] Sets the action associated with this presenter. More...
void	SetCompositePresenter (MxCompositePresenter *p_compositePresenter)
	[AI] Sets the composite presenter to notify/join on completion. More...
void	SetDisplayZ (MxS32 p_displayZ)
	[AI] Sets the display Z (depth) order for the presenter. More...
Public Member Functions inherited from MxCore
	MxCore ()
	[AI] Constructs a new MxCore object and assigns it a unique id. More...
virtual	~MxCore ()
	[AI] Virtual destructor. Required for correct polymorphic cleanup in derived classes. More...
virtual MxLong	Notify (MxParam &p_param)
	[AI] Virtual callback notification mechanism. More...
virtual MxResult	Tickle ()
	[AI] Called by tickle managers to allow the object to update itself. More...
virtual const char *	ClassName () const
	[AI] Returns the runtime class name of this object. More...
virtual MxBool	IsA (const char *p_name) const
	[AI] Checks whether this object's class type or parents match the given name. More...
MxU32	GetId ()
	[AI] Gets the unique (per-process) id assigned to this object instance. More...

Additional Inherited Members
Public Types inherited from MxPresenter
enum	TickleState {   e_idle = 0 , e_ready , e_starting , e_streaming ,   e_repeating , e_freezing , e_done }
	[AI] Represents the state of the presenter's tickle (update) lifecycle. More...
Static Public Member Functions inherited from MxStillPresenter
static const char *	HandlerClassName ()
	[AI] Returns the handler class name string for this Presenter type ("MxStillPresenter"). More...
Static Public Member Functions inherited from MxVideoPresenter
static const char *	HandlerClassName ()
	Returns the class name string for this presenter type. More...
Static Public Member Functions inherited from MxMediaPresenter
static const char *	HandlerClassName ()
	[AI] Gets the class name string for handler dispatch and RTTI emulation. More...
Static Public Member Functions inherited from MxPresenter
static const char *	HandlerClassName ()
	[AI] Returns the handler class name for identification and reflection purposes. More...
Protected Member Functions inherited from MxVideoPresenter
void	Destroy (MxBool p_fromDestructor)
	Releases resources and unregisters presenter from the video manager. More...
Protected Member Functions inherited from MxMediaPresenter
void	Init ()
	[AI] Initializes all member variables to a known default state (NULL pointers, etc). More...
void	Destroy (MxBool p_fromDestructor)
	[AI] Frees all managed resources, owned memory and pointers, optionally preventing destruction of the base class. More...
Protected Member Functions inherited from MxPresenter
virtual void	DoneTickle ()
	[AI] Handles any post-completion logic, resetting to idle state. More...
virtual void	ParseExtra ()
	[AI] Parses additional data from the associated action for configuration or world interaction. More...
void	ProgressTickleState (TickleState p_tickleState)
	[AI] Helper for advancing the presenter's tickle state and updating transition history. More...
void	Init ()
	[AI] Initializes object state to post-construction defaults. More...
Protected Attributes inherited from MxVideoPresenter
MxBitmap *	m_frameBitmap
	Bitmap for current video frame. [AI]. More...
AlphaMask *	m_alpha
	Alpha mask for hit testing. May be null. [AI]. More...
LPDIRECTDRAWSURFACE	m_unk0x58
	DirectDraw surface for hardware video rendering. [AI]. More...
MxS16	m_unk0x5c
	Loop/advance/frame decode counter. [AI]. More...
FlagBitfield	m_flags
	Miscellaneous flags for object and UI state. [AI]. More...
MxLong	m_unk0x60
	Last freeze time/start of sustain interval. [AI]. More...
Protected Attributes inherited from MxMediaPresenter
MxDSSubscriber *	m_subscriber
	[AI] Subscriber that provides the stream data (e.g., audio/video chunks) for this presenter. More...
MxStreamChunkList *	m_loopingChunks
	[AI] Linked list of all chunks available for looping/repeating playback. More...
MxStreamChunkListCursor *	m_loopingChunkCursor
	[AI] Cursor used to iterate through the loopingChunk list during repeat mode. More...
MxStreamChunk *	m_currentChunk
	[AI] Currently active data chunk for playback or processing. More...
Protected Attributes inherited from MxPresenter
TickleState	m_currentTickleState
	[AI] Current state in the tickle lifecycle. More...
MxU32	m_previousTickleStates
	[AI] Bitfield representing all tickle states that have already occurred during this lifetime. More...
MxPoint32	m_location
	[AI] 2D display location for the presenter. More...
MxS32	m_displayZ
	[AI] Z-order value for display stacking. More...
MxDSAction *	m_action
	[AI] The associated action currently being presented by this presenter. More...
MxCriticalSection	m_criticalSection
	[AI] Thread synchronization for presenter state and data. More...
MxCompositePresenter *	m_compositePresenter
	[AI] Owner composite presenter, if any. More...

Detailed Description

Presenter class for displaying and updating a graphical meter element, such as a progress bar or health bar, with support for different fill directions and variable-driven values.

[AI]

Inherits from MxStillPresenter to provide additional drawing and update logic for meters, referencing a variable in the global variable table for its fill percentage, and supports customizable fill directions and filler color. [AI]

Definition at line 16 of file legometerpresenter.h.

Constructor & Destructor Documentation

LegoMeterPresenter()

LegoMeterPresenter::LegoMeterPresenter

(

)

Constructs a LegoMeterPresenter with default options (left to right fill, zero percent, no pixels allocated).

[AI]

Definition at line 17 of file legometerpresenter.cpp.

~LegoMeterPresenter()

LegoMeterPresenter::~LegoMeterPresenter ( )

override

Destructor for LegoMeterPresenter.

Releases allocated meter pixel buffer. [AI]

Definition at line 28 of file legometerpresenter.cpp.

Member Function Documentation

ParseExtra()

void LegoMeterPresenter::ParseExtra ( )

overridevirtual

[AI] Parses the "extra" data chunk attached to this presenter for dynamic meter configuration.

Reads meter layout, fill color, and the variable to drive the meter from the configuration; ends the action if variable is missing. [AI] @override

Reimplemented from MxPresenter.

Definition at line 35 of file legometerpresenter.cpp.

RepeatingTickle()

void LegoMeterPresenter::RepeatingTickle ( )

overridevirtual

[AI] Called every frame in the 'repeating' tickle phase, updates and redraws the meter based on current variable value.

Invokes DrawMeter to update meter fill according to the relevant variable, then performs base class tickle logic. [AI] @override

Reimplemented from MxPresenter.

Definition at line 103 of file legometerpresenter.cpp.

StreamingTickle()

void LegoMeterPresenter::StreamingTickle ( )

overridevirtual

[AI] Performs initialization of the meter on first streaming update, copying original bitmap data and setting up dimensions.

Called at the 'streaming' tickle phase; saves initial bitmap state and meter dimensions, and allocates buffer for meter rendering. [AI] @override

Reimplemented from MxPresenter.

Definition at line 83 of file legometerpresenter.cpp.

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

• legometerpresenter.h
• legometerpresenter.cpp