TeletextScreen Class Reference

#include <libmythtv/captions/teletextscreen.h>

Inheritance diagram for TeletextScreen:

Collaboration diagram for TeletextScreen:

Public Member Functions
	TeletextScreen (MythPlayer *Player, MythPainter *Painter, const QString &Name, int FontStretch)
	~TeletextScreen () override
bool	Create () override
void	Pulse () override
	Pulse is called 70 times a second to trigger a single frame of an animation. More...
bool	KeyPress (const QString &Key, bool &Exit)
void	SetPage (int page, int subpage)
void	SetDisplaying (bool display)
void	Reset () override
	Reset the widget to it's original state, should not reset changes made by the theme. More...
void	ClearScreen ()
Public Member Functions inherited from MythScreenType
	MythScreenType (MythScreenStack *parent, const QString &name, bool fullscreen=true)
	~MythScreenType () override
virtual bool	Create (void)
bool	keyPressEvent (QKeyEvent *event) override
	Key event handler. More...
bool	inputMethodEvent (QInputMethodEvent *event) override
	Input Method event handler. More...
bool	gestureEvent (MythGestureEvent *event) override
	Mouse click/movement handler, receives mouse gesture events from the QCoreApplication event loop. More...
virtual void	ShowMenu (void)
void	doInit (void)
void	LoadInForeground (void)
bool	IsInitialized (void) const
	Has Init() been called on this screen? More...
bool	IsFullscreen (void) const
void	SetFullscreen (bool full)
MythUIType *	GetFocusWidget (void) const
bool	SetFocusWidget (MythUIType *widget=nullptr)
virtual bool	NextPrevWidgetFocus (bool up_or_down)
void	BuildFocusList (void)
MythScreenStack *	GetScreenStack () const
virtual void	aboutToHide (void)
virtual void	aboutToShow (void)
bool	IsDeleting (void) const
void	SetDeleting (bool deleting)
bool	IsLoading (void) const
bool	IsLoaded (void) const
MythPainter *	GetPainter (void) override
Public Member Functions inherited from MythUIComposite
	MythUIComposite (QObject *parent, const QString &name)
	~MythUIComposite () override=default
virtual void	SetTextFromMap (const InfoMap &infoMap)
virtual void	ResetMap (const InfoMap &infoMap)
Public Member Functions inherited from MythUIType
	MythUIType (QObject *parent, const QString &name)
virtual void	Reset (void)
	Reset the widget to it's original state, should not reset changes made by the theme. More...
void	AddChild (MythUIType *child)
	Add a child UIType. More...
MythUIType *	GetChild (const QString &name) const
	Get a named child of this UIType. More...
MythUIType *	GetChildAt (QPoint p, bool recursive=true, bool focusable=true) const
	Return the first MythUIType at the given coordinates. More...
QList< MythUIType * > *	GetAllChildren (void)
	Return a list of all child widgets. More...
QList< MythUIType * >	GetAllDescendants (void)
void	DeleteChild (const QString &name)
	Delete a named child of this UIType. More...
void	DeleteChild (MythUIType *child)
	Delete the given UIType if it is a child of this UIType. More...
void	DeleteAllChildren (void)
	Delete all child widgets. More...
bool	NeedsRedraw (void) const
void	ResetNeedsRedraw (void)
void	SetRedraw (void)
void	SetChildNeedsRedraw (MythUIType *child)
bool	CanTakeFocus (void) const
	Return if this widget can accept input focus. More...
void	SetCanTakeFocus (bool set=true)
	Set whether this widget can take focus. More...
void	SetFocusOrder (int order)
void	SetFocusedName (const QString &widgetname)
QString	GetFocusedName (void) const
bool	IsEnabled (void) const
void	SetEnabled (bool enable)
bool	MoveToTop (void)
bool	MoveChildToTop (MythUIType *child)
void	ActivateAnimations (MythUIAnimation::Trigger trigger)
QList< MythUIAnimation * > *	GetAnimations (void)
virtual void	Pulse (void)
	Pulse is called 70 times a second to trigger a single frame of an animation. More...
void	Draw (MythPainter *p, int xoffset, int yoffset, int alphaMod=255, QRect clipRect=QRect())
void	SetPosition (int x, int y)
	Convenience method, calls SetPosition(const MythPoint&) Override that instead to change functionality. More...
void	SetPosition (QPoint point)
virtual void	SetPosition (const MythPoint &point)
virtual MythPoint	GetPosition (void) const
virtual void	SetSize (QSize size)
virtual void	SetMinSize (const MythPoint &size)
	Set the minimum size of this widget, for widgets which can be rescaled. More...
virtual QSize	GetMinSize (void) const
virtual void	SetArea (const MythRect &rect)
virtual void	AdjustMinArea (int delta_x, int delta_y, int delta_w, int delta_h)
	Adjust the size of a sibling. More...
virtual void	VanishSibling (void)
virtual void	SetMinAreaParent (MythRect actual_area, MythRect allowed_area, MythUIType *child)
	Adjust the size of sibling objects within the button. More...
virtual void	SetMinArea (const MythRect &rect)
	Set the minimum area based on the given size. More...
virtual MythRect	GetArea (void) const
	If the object has a minimum area defined, return it, other wise return the default area. More...
virtual MythRect	GetFullArea (void) const
virtual void	RecalculateArea (bool recurse=true)
void	ExpandArea (QRect rect)
virtual QRegion	GetDirtyArea (void) const
bool	IsVisible (bool recurse=false) const
virtual void	SetVisible (bool visible)
void	MoveTo (QPoint destXY, QPoint speedXY)
void	AdjustAlpha (int mode, int alphachange, int minalpha=0, int maxalpha=255)
void	SetAlpha (int newalpha)
int	GetAlpha (void) const
virtual bool	keyPressEvent (QKeyEvent *event)
	Key event handler. More...
virtual bool	inputMethodEvent (QInputMethodEvent *event)
	Input Method event handler. More...
virtual bool	gestureEvent (MythGestureEvent *event)
	Mouse click/movement handler, receives mouse gesture events from the QCoreApplication event loop. More...
virtual void	mediaEvent (MythMediaEvent *event)
	Media/Device status event handler, received from MythMediaMonitor. More...
MythFontProperties *	GetFont (const QString &text) const
bool	AddFont (const QString &text, MythFontProperties *fontProp)
void	SetHelpText (const QString &text)
QString	GetHelpText (void) const
void	SetXMLLocation (const QString &filename, int where)
QString	GetXMLLocation (void) const
void	SetXMLName (const QString &name)
QString	GetXMLName (void) const
bool	IsDeferredLoading (bool recurse=false) const
void	SetDeferLoad (bool defer)
virtual void	LoadNow (void)
	Cause images in this and child widgets to be loaded. More...
bool	ContainsPoint (QPoint point) const
	Check if the given point falls within this widgets area. More...
virtual MythPainter *	GetPainter (void)
void	SetPainter (MythPainter *painter)
void	SetCentre (UIEffects::Centre centre)
void	SetZoom (float zoom)
void	SetHorizontalZoom (float zoom)
void	SetVerticalZoom (float zoom)
void	SetAngle (float angle)
void	SetDependIsDefault (bool isDefault)
void	SetReverseDependence (MythUIType *dependee, bool reverse)
void	SetDependsMap (QMap< QString, QString > dependsMap)
QMap< QString, QString >	GetDependsMap () const

Static Public Attributes
static const QColor	kColorBlack = QColor( 0, 0, 0,255)
static const QColor	kColorRed = QColor(255, 0, 0,255)
static const QColor	kColorGreen = QColor( 0,255, 0,255)
static const QColor	kColorYellow = QColor(255,255, 0,255)
static const QColor	kColorBlue = QColor( 0, 0,255,255)
static const QColor	kColorMagenta = QColor(255, 0,255,255)
static const QColor	kColorCyan = QColor( 0,255,255,255)
static const QColor	kColorWhite = QColor(255,255,255,255)
static const QColor	kColorTransp
static const int	kTeletextColumns = 40
static const int	kTeletextRows = 26

Private Member Functions
void	OptimiseDisplayedArea ()
QImage *	GetRowImage (int row, QRect &rect)
void	SetBackgroundColor (int color)
void	DrawBackground (int x, int y)
void	DrawRect (int row, QRect rect)
void	DrawCharacter (int x, int y, QChar ch, bool doubleheight=false)
void	DrawMosaic (int x, int y, int code, bool doubleheight)
void	DrawLine (const tt_line_array &page, uint row, int lang)
void	DrawHeader (const tt_line_array &page, int lang)
void	DrawStatus ()
void	DrawPage ()

Static Private Member Functions
static bool	InitialiseFont ()
static void	SetForegroundColor (int color)

Private Attributes
MythPlayer *	m_player {nullptr}
TeletextReader *	m_teletextReader {nullptr}
QRect	m_safeArea
int	m_colWidth {10}
int	m_rowHeight {10}
QColor	m_bgColor {kColorBlack}
bool	m_displaying {false}
QHash< int, QImage * >	m_rowImages
int	m_fontStretch
int	m_fontHeight {10}

Additional Inherited Members
Public Slots inherited from MythScreenType
virtual void	Close ()
Public Slots inherited from MythUIType
void	LoseFocus (void)
bool	TakeFocus (void)
void	Activate (void)
void	Hide (void)
void	Show (void)
void	Refresh (void)
void	UpdateDependState (bool isDefault)
void	UpdateDependState (MythUIType *dependee, bool isDefault)
Signals inherited from MythScreenType
void	Exiting ()
Signals inherited from MythUIType
void	RequestUpdate (void)
void	RequestRegionUpdate (const QRect &)
void	TakingFocus (void)
void	LosingFocus (void)
void	VisibilityChanged (bool Visible)
void	Showing (void)
void	Hiding (void)
void	Enabling (void)
void	Disabling (void)
void	FinishedMoving (void)
void	FinishedFading (void)
void	DependChanged (bool isDefault)
Static Public Member Functions inherited from XMLParseBase
static QString	getFirstText (QDomElement &element)
static bool	parseBool (const QString &text)
static bool	parseBool (QDomElement &element)
static MythPoint	parsePoint (const QString &text, bool normalize=true)
static MythPoint	parsePoint (QDomElement &element, bool normalize=true)
static QSize	parseSize (const QString &text, bool normalize=true)
static QSize	parseSize (QDomElement &element, bool normalize=true)
static MythRect	parseRect (const QString &text, bool normalize=true)
static MythRect	parseRect (QDomElement &element, bool normalize=true)
static int	parseAlignment (const QString &text)
static int	parseAlignment (QDomElement &element)
static QBrush	parseGradient (const QDomElement &element)
static QString	parseText (QDomElement &element)
static MythUIType *	GetGlobalObjectStore (void)
static void	ClearGlobalObjectStore (void)
static void	ParseChildren (const QString &filename, QDomElement &element, MythUIType *parent, bool showWarnings)
static MythUIType *	ParseUIType (const QString &filename, QDomElement &element, const QString &type, MythUIType *parent, MythScreenType *screen, bool showWarnings, QMap< QString, QString > &parentDependsMap)
static bool	WindowExists (const QString &xmlfile, const QString &windowname)
static bool	LoadWindowFromXML (const QString &xmlfile, const QString &windowname, MythUIType *parent)
static bool	LoadBaseTheme (void)
static bool	LoadBaseTheme (const QString &baseTheme)
static bool	CopyWindowFromBase (const QString &windowname, MythScreenType *win)
Protected Member Functions inherited from MythScreenType
	MythScreenType (MythUIType *parent, const QString &name, bool fullscreen=true)
void	CopyFrom (MythUIType *base) override
	Copy this widgets state from another. More...
void	CreateCopy (MythUIType *parent) override
	Copy the state of this widget to the one given, it must be of the same type. More...
bool	ParseElement (const QString &filename, QDomElement &element, bool showWarnings) override
	Parse the xml definition of this widget setting the state of the object accordingly. More...
virtual void	Load (void)
	Load data which will ultimately be displayed on-screen or used to determine what appears on-screen (See Warning) More...
virtual void	Init (void)
	Used after calling Load() to assign data to widgets and other UI initilisation which is prohibited in Load() More...
void	LoadInBackground (const QString &message="")
void	ReloadInBackground (void)
void	OpenBusyPopup (const QString &message="")
void	CloseBusyPopup (void)
void	SetBusyPopupMessage (const QString &message)
void	ResetBusyPopup (void)
Protected Member Functions inherited from MythUIType
	~MythUIType () override
void	customEvent (QEvent *event) override
virtual void	DrawSelf (MythPainter *p, int xoffset, int yoffset, int alphaMod, QRect clipRect)
void	AddFocusableChildrenToList (FocusInfoType &focusList)
void	HandleAlphaPulse ()
	Handle one frame of an alpha (transparency) change animation. More...
void	HandleMovementPulse ()
	Handle one frame of a movement animation. More...
int	CalcAlpha (int alphamod) const
void	ConnectDependants (bool recurse=false)
virtual bool	ParseElement (const QString &filename, QDomElement &element, bool showWarnings)
	Parse the xml definition of this widget setting the state of the object accordingly. More...
virtual void	CopyFrom (MythUIType *base)
	Copy this widgets state from another. More...
virtual void	CreateCopy (MythUIType *parent)
	Copy the state of this widget to the one given, it must be of the same type. More...
virtual void	Finalize (void)
	Perform any post-xml parsing initialisation tasks. More...
Static Protected Member Functions inherited from MythUIType
static int	NormX (int width)
static int	NormY (int height)
Protected Attributes inherited from MythScreenType
bool	m_fullScreen {false}
bool	m_isDeleting {false}
QSemaphore	m_loadLock {1}
volatile bool	m_isLoading {false}
volatile bool	m_isLoaded {false}
bool	m_isInitialized {false}
MythUIType *	m_currentFocusWidget {nullptr}
FocusInfoType	m_focusWidgetList
MythScreenStack *	m_screenStack {nullptr}
MythUIBusyDialog *	m_busyPopup {nullptr}
QRegion	m_savedMask
Protected Attributes inherited from MythUIType
QList< MythUIType * >	m_childrenList
QMap< QString, QString >	m_dependsMap
QList< QPair< MythUIType *, bool > >	m_dependsValue
QList< int >	m_dependOperator
bool	m_visible {true}
bool	m_hasFocus {false}
bool	m_canHaveFocus {false}
bool	m_enabled {true}
bool	m_enableInitiator {false}
bool	m_initiator {false}
bool	m_vanish {false}
bool	m_vanished {false}
bool	m_isDependDefault {false}
QMap< MythUIType *, bool >	m_reverseDepend
QString	m_focusedName
int	m_focusOrder {0}
MythRect	m_area {0,0,0,0}
MythRect	m_minArea {0,0,0,0}
MythPoint	m_minSize
QRegion	m_dirtyRegion {0,0,0,0}
bool	m_needsRedraw {false}
UIEffects	m_effects
int	m_alphaChangeMode {0}
int	m_alphaChange {0}
int	m_alphaMin {0}
int	m_alphaMax {255}
bool	m_moving {false}
QPoint	m_xyDestination {0,0}
QPoint	m_xySpeed {0,0}
FontMap *	m_fonts {nullptr}
MythUIType *	m_parent {nullptr}
MythPainter *	m_painter {nullptr}
QList< MythUIAnimation * >	m_animations
QString	m_helptext
QString	m_xmlName
QString	m_xmlLocation
bool	m_deferload {false}
QColor	m_borderColor {Qt::black}

Detailed Description

Definition at line 11 of file teletextscreen.h.

Constructor & Destructor Documentation

TeletextScreen()

TeletextScreen::TeletextScreen	(	MythPlayer *	Player,
		MythPainter *	Painter,
		const QString &	Name,
		int	FontStretch
	)

Definition at line 46 of file teletextscreen.cpp.

~TeletextScreen()

TeletextScreen::~TeletextScreen ( )

override

Definition at line 54 of file teletextscreen.cpp.

Member Function Documentation

ClearScreen()

void TeletextScreen::ClearScreen

(

)

Definition at line 66 of file teletextscreen.cpp.

Referenced by Pulse(), SetDisplaying(), and ~TeletextScreen().

Create()

bool TeletextScreen::Create ( void  )

overridevirtual

Reimplemented from MythScreenType.

Definition at line 59 of file teletextscreen.cpp.

Referenced by MythCaptionsOverlay::InitTeletext().

DrawBackground()

void TeletextScreen::DrawBackground ( int  x, int  y  )

private

Definition at line 559 of file teletextscreen.cpp.

Referenced by DrawLine(), and DrawStatus().

DrawCharacter()

void TeletextScreen::DrawCharacter ( int  x, int  y, QChar  ch, bool  doubleheight = false  )

private

Definition at line 508 of file teletextscreen.cpp.

Referenced by DrawLine(), and DrawStatus().

DrawHeader()

void TeletextScreen::DrawHeader ( const tt_line_array &  page, int  lang  )

private

Definition at line 252 of file teletextscreen.cpp.

Referenced by Pulse().

DrawLine()

void TeletextScreen::DrawLine ( const tt_line_array &  page, uint  row, int  lang  )

private

Definition at line 316 of file teletextscreen.cpp.

Referenced by DrawHeader(), and Pulse().

DrawMosaic()

void TeletextScreen::DrawMosaic ( int  x, int  y, int  code, bool  doubleheight  )

private

Definition at line 581 of file teletextscreen.cpp.

Referenced by DrawLine().

DrawPage()

void TeletextScreen::DrawPage ( )

private

DrawRect()

void TeletextScreen::DrawRect ( int  row, QRect  rect  )

private

Definition at line 567 of file teletextscreen.cpp.

Referenced by DrawBackground(), and DrawMosaic().

DrawStatus()

void TeletextScreen::DrawStatus ( )

private

Definition at line 605 of file teletextscreen.cpp.

Referenced by DrawHeader().

GetRowImage()

QImage * TeletextScreen::GetRowImage ( int  row, QRect &  rect  )

private

Definition at line 75 of file teletextscreen.cpp.

Referenced by DrawCharacter(), and DrawRect().

InitialiseFont()

bool TeletextScreen::InitialiseFont ( )

staticprivate

Definition at line 660 of file teletextscreen.cpp.

Referenced by Pulse().

KeyPress()

bool TeletextScreen::KeyPress	(	const QString &	Key,
		bool &	Exit
	)

Definition at line 226 of file teletextscreen.cpp.

OptimiseDisplayedArea()

void TeletextScreen::OptimiseDisplayedArea ( void  )

private

Definition at line 96 of file teletextscreen.cpp.

Referenced by Pulse().

Pulse()

void TeletextScreen::Pulse ( void  )

overridevirtual

Pulse is called 70 times a second to trigger a single frame of an animation.

This changes the alpha value of the widget

Reimplemented from MythUIType.

Definition at line 143 of file teletextscreen.cpp.

Reset()

void TeletextScreen::Reset ( void  )

overridevirtual

Reset the widget to it's original state, should not reset changes made by the theme.

Reimplemented from MythUIType.

Definition at line 246 of file teletextscreen.cpp.

Referenced by MythCaptionsOverlay::TeletextReset().

SetBackgroundColor()

void TeletextScreen::SetBackgroundColor ( int  color )

private

Definition at line 306 of file teletextscreen.cpp.

Referenced by DrawLine(), and DrawStatus().

SetDisplaying()

void TeletextScreen::SetDisplaying

(

bool

display

)

Definition at line 239 of file teletextscreen.cpp.

Referenced by MythCaptionsOverlay::EnableTeletext(), and MythCaptionsOverlay::InitTeletext().

SetForegroundColor()

void TeletextScreen::SetForegroundColor ( int  color )

staticprivate

Definition at line 298 of file teletextscreen.cpp.

Referenced by DrawLine(), and DrawStatus().

SetPage()

void TeletextScreen::SetPage	(	int	page,
		int	subpage
	)

Definition at line 233 of file teletextscreen.cpp.

Referenced by MythCaptionsOverlay::EnableTeletext().

Member Data Documentation

kColorBlack

const QColor TeletextScreen::kColorBlack = QColor( 0, 0, 0,255)

static

Definition at line 57 of file teletextscreen.h.

Referenced by ttcolortoqcolor().

kColorBlue

const QColor TeletextScreen::kColorBlue = QColor( 0, 0,255,255)

static

Definition at line 61 of file teletextscreen.h.

Referenced by ttcolortoqcolor().

kColorCyan

const QColor TeletextScreen::kColorCyan = QColor( 0,255,255,255)

static

Definition at line 63 of file teletextscreen.h.

Referenced by ttcolortoqcolor().

kColorGreen

const QColor TeletextScreen::kColorGreen = QColor( 0,255, 0,255)

static

Definition at line 59 of file teletextscreen.h.

Referenced by ttcolortoqcolor().

kColorMagenta

const QColor TeletextScreen::kColorMagenta = QColor(255, 0,255,255)

static

Definition at line 62 of file teletextscreen.h.

Referenced by ttcolortoqcolor().

kColorRed

const QColor TeletextScreen::kColorRed = QColor(255, 0, 0,255)

static

Definition at line 58 of file teletextscreen.h.

Referenced by ttcolortoqcolor().

kColorTransp

const QColor TeletextScreen::kColorTransp

static

Definition at line 65 of file teletextscreen.h.

kColorWhite

const QColor TeletextScreen::kColorWhite = QColor(255,255,255,255)

static

Definition at line 64 of file teletextscreen.h.

Referenced by ttcolortoqcolor().

kColorYellow

const QColor TeletextScreen::kColorYellow = QColor(255,255, 0,255)

static

Definition at line 60 of file teletextscreen.h.

Referenced by ttcolortoqcolor().

kTeletextColumns

const int TeletextScreen::kTeletextColumns = 40

static

Definition at line 66 of file teletextscreen.h.

Referenced by DrawLine(), and Pulse().

kTeletextRows

const int TeletextScreen::kTeletextRows = 26

static

Definition at line 67 of file teletextscreen.h.

Referenced by DrawLine(), and Pulse().

m_bgColor

QColor TeletextScreen::m_bgColor {kColorBlack}

private

Definition at line 50 of file teletextscreen.h.

Referenced by DrawRect(), and SetBackgroundColor().

m_colWidth

int TeletextScreen::m_colWidth {10}

private

Definition at line 48 of file teletextscreen.h.

Referenced by DrawBackground(), DrawCharacter(), DrawMosaic(), and Pulse().

m_displaying

bool TeletextScreen::m_displaying {false}

private

Definition at line 51 of file teletextscreen.h.

Referenced by DrawHeader(), Pulse(), and SetDisplaying().

m_fontHeight

int TeletextScreen::m_fontHeight {10}

private

Definition at line 54 of file teletextscreen.h.

Referenced by DrawCharacter(), and Pulse().

m_fontStretch

int TeletextScreen::m_fontStretch

private

Definition at line 53 of file teletextscreen.h.

Referenced by DrawCharacter(), and Pulse().

m_player

MythPlayer* TeletextScreen::m_player {nullptr}

private

Definition at line 45 of file teletextscreen.h.

Referenced by Create(), and Pulse().

m_rowHeight

int TeletextScreen::m_rowHeight {10}

private

Definition at line 49 of file teletextscreen.h.

Referenced by DrawBackground(), DrawCharacter(), DrawMosaic(), GetRowImage(), OptimiseDisplayedArea(), and Pulse().

m_rowImages

QHash<int, QImage*> TeletextScreen::m_rowImages

private

Definition at line 52 of file teletextscreen.h.

Referenced by ClearScreen(), GetRowImage(), and OptimiseDisplayedArea().

m_safeArea

QRect TeletextScreen::m_safeArea

private

Definition at line 47 of file teletextscreen.h.

Referenced by GetRowImage(), OptimiseDisplayedArea(), and Pulse().

m_teletextReader

TeletextReader* TeletextScreen::m_teletextReader {nullptr}

private

Definition at line 46 of file teletextscreen.h.

Referenced by Create(), DrawLine(), DrawStatus(), KeyPress(), Pulse(), Reset(), and SetPage().

---

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

• mythtv/libs/libmythtv/captions/teletextscreen.h
• mythtv/libs/libmythtv/captions/teletextscreen.cpp