#include <wx/html/htmlcell.h>

Inheritance diagram for wxHtmlCell:

Detailed Description

Internal data structure.

It represents fragments of parsed HTML page, the so-called cell - a word, picture, table, horizontal line and so on. It is used by wxHtmlWindow and wxHtmlWinParser to represent HTML page in memory.

You can divide cells into two groups : visible cells with non-zero width and height and helper cells (usually with zero width and height) that perform special actions such as color or font change.

Library: wxHTML

Category: HTML

See also: Cells and Containers, wxHtmlContainerCell

Public Member Functions
	wxHtmlCell ()
	Constructor. More...

virtual bool	AdjustPagebreak (int *pagebreak, int pageHeight) const
	This method is called when paginating HTML, e.g. when printing. More...

virtual void	Draw (wxDC &dc, int x, int y, int view_y1, int view_y2, wxHtmlRenderingInfo &info)
	Renders the cell. More...

virtual void	DrawInvisible (wxDC &dc, int x, int y, wxHtmlRenderingInfo &info)
	This method is called instead of Draw() when the cell is certainly out of the screen (and thus invisible). More...

virtual const wxHtmlCell *	Find (int condition, const void *param) const
	Returns pointer to itself if this cell matches condition (or if any of the cells following in the list matches), NULL otherwise. More...

virtual wxHtmlCell *	FindCellByPos (wxCoord x, wxCoord y, unsigned flags=wxHTML_FIND_EXACT) const
	Find a cell inside this cell positioned at the given coordinates (relative to this's positions). More...

int	GetDescent () const
	Returns descent value of the cell (m_Descent member). More...

virtual wxHtmlCell *	GetFirstChild () const
	Returns pointer to the first cell in the list. More...

int	GetHeight () const
	Returns height of the cell (m_Height member). More...

const wxString &	GetId () const
	Returns unique cell identifier if there is any, the empty string otherwise. More...

virtual wxHtmlLinkInfo *	GetLink (int x=0, int y=0) const
	Returns hypertext link if associated with this cell or NULL otherwise. More...

virtual wxCursor	GetMouseCursor (wxHtmlWindowInterface *window) const
	Returns cursor to show when mouse pointer is over the cell. More...

virtual wxCursor	GetMouseCursorAt (wxHtmlWindowInterface *window, const wxPoint &rePos) const
	Returns cursor to show when mouse pointer is over the specified point. More...

wxHtmlCell *	GetNext () const
	Returns pointer to the next cell in list (see htmlcell.h if you're interested in details). More...

wxHtmlContainerCell *	GetParent () const
	Returns pointer to parent container. More...

int	GetPosX () const
	Returns X position within parent (the value is relative to parent's upper left corner). More...

int	GetPosY () const
	Returns Y position within parent (the value is relative to parent's upper left corner). More...

int	GetWidth () const
	Returns width of the cell (m_Width member). More...

virtual void	Layout (int w)
	Layouts the cell. More...

virtual bool	ProcessMouseClick (wxHtmlWindowInterface *window, const wxPoint &pos, const wxMouseEvent &event)
	This function is simple event handler. More...

void	SetId (const wxString &id)
	Sets unique cell identifier. More...

void	SetLink (const wxHtmlLinkInfo &link)
	Sets the hypertext link associated with this cell. More...

void	SetNext (wxHtmlCell *cell)
	Sets the next cell in the list. More...

void	SetParent (wxHtmlContainerCell *p)
	Sets parent container of this cell. More...

virtual void	SetPos (int x, int y)
	Sets the cell's position within parent container. More...

virtual wxString	ConvertToText (wxHtmlSelection *sel) const
	Converts the cell into text representation. More...

Public Member Functions inherited from wxObject
	wxObject ()
	Default ctor; initializes to NULL the internal reference data. More...

	wxObject (const wxObject &other)
	Copy ctor. More...

virtual	~wxObject ()
	Destructor. More...

virtual wxClassInfo *	GetClassInfo () const
	This virtual function is redefined for every class that requires run-time type information, when using the wxDECLARE_CLASS macro (or similar). More...

wxObjectRefData *	GetRefData () const
	Returns the wxObject::m_refData pointer, i.e. the data referenced by this object. More...

bool	IsKindOf (const wxClassInfo *info) const
	Determines whether this class is a subclass of (or the same class as) the given class. More...

bool	IsSameAs (const wxObject &obj) const
	Returns true if this object has the same data pointer as obj. More...

void	Ref (const wxObject &clone)
	Makes this object refer to the data in clone. More...

void	SetRefData (wxObjectRefData *data)
	Sets the wxObject::m_refData pointer. More...

void	UnRef ()
	Decrements the reference count in the associated data, and if it is zero, deletes the data. More...

void	UnShare ()
	This is the same of AllocExclusive() but this method is public. More...

void	operator delete (void *buf)
	The delete operator is defined for debugging versions of the library only, when the identifier `__WXDEBUG__` is defined. More...

void *	operator new (size_t size, const wxString &filename=NULL, int lineNum=0)
	The new operator is defined for debugging versions of the library only, when the identifier `__WXDEBUG__` is defined. More...

Additional Inherited Members
Protected Member Functions inherited from wxObject
void	AllocExclusive ()
	Ensure that this object's data is not shared with any other object. More...

virtual wxObjectRefData *	CreateRefData () const
	Creates a new instance of the wxObjectRefData-derived class specific to this object and returns it. More...

virtual wxObjectRefData *	CloneRefData (const wxObjectRefData *data) const
	Creates a new instance of the wxObjectRefData-derived class specific to this object and initializes it copying data. More...

Protected Attributes inherited from wxObject
wxObjectRefData *	m_refData
	Pointer to an object which is the object's reference-counted data. More...

Constructor & Destructor Documentation

◆ wxHtmlCell()

wxHtmlCell::wxHtmlCell ( )

Constructor.

Member Function Documentation

◆ AdjustPagebreak()

virtual bool wxHtmlCell::AdjustPagebreak	(	int *	pagebreak,
		int	pageHeight
	)		const

virtual

This method is called when paginating HTML, e.g. when printing.

User code should never call this function, but may need to override it in custom HTML cell classes with any specific page breaking requirements.

On input, pagebreak contains y-coordinate of page break (i.e. the horizontal line that should not be crossed by words, images etc.) relative to the parent cell on entry and may be modified to request a page break at a position before it if this cell cannot be divided into two pieces (each one on its own page).

Note that page break must still happen on the current page, i.e. the returned value must be strictly greater than

*pagebreak -

pageHeight

and less or equal to *pagebreak for the value of pagebreak on input.

Parameters

pagebreak	position in pixels of the pagebreak.
pageHeight	the height in pixels of the page drawable area

Returns: true if pagebreak was modified, false otherwise.

◆ ConvertToText()

virtual wxString wxHtmlCell::ConvertToText ( wxHtmlSelection * sel ) const

virtual

Converts the cell into text representation.

If sel != NULL then only part of the cell inside the selection is converted.

◆ Draw()

virtual void wxHtmlCell::Draw	(	wxDC &	dc,
		int	x,
		int	y,
		int	view_y1,
		int	view_y2,
		wxHtmlRenderingInfo &	info
	)

virtual

Renders the cell.

Parameters

dc	Device context to which the cell is to be drawn.
x,y	Coordinates of parent's upper left corner (origin). You must add this to m_PosX,m_PosY when passing coordinates to dc's methods Example: dc->DrawText("hello", x + m_PosX, y + m_PosY)
view_y1	y-coord of the first line visible in window. This is used to optimize rendering speed.
view_y2	y-coord of the last line visible in window. This is used to optimize rendering speed.
info	Additional information for the rendering of the cell.

◆ DrawInvisible()

virtual void wxHtmlCell::DrawInvisible	(	wxDC &	dc,
		int	x,
		int	y,
		wxHtmlRenderingInfo &	info
	)

virtual

This method is called instead of Draw() when the cell is certainly out of the screen (and thus invisible).

This is not nonsense - some tags (like wxHtmlColourCell or font setter) must be drawn even if they are invisible!

Parameters

dc	Device context to which the cell is to be drawn.
x,y	Coordinates of parent's upper left corner. You must add this to m_PosX,m_PosY when passing coordinates to dc's methods Example: dc->DrawText("hello", x + m_PosX, y + m_PosY)
info	Additional information for the rendering of the cell.

◆ Find()

virtual const wxHtmlCell* wxHtmlCell::Find	(	int	condition,
		const void *	param
	)		const

virtual

Returns pointer to itself if this cell matches condition (or if any of the cells following in the list matches), NULL otherwise.

(In other words if you call top-level container's Find() it will return pointer to the first cell that matches the condition)

It is recommended way how to obtain pointer to particular cell or to cell of some type (e.g. wxHtmlAnchorCell reacts on wxHTML_COND_ISANCHOR condition).

Parameters

condition	Unique integer identifier of condition
param	Optional parameters

◆ FindCellByPos()

virtual wxHtmlCell* wxHtmlCell::FindCellByPos	(	wxCoord	x,
		wxCoord	y,
		unsigned	flags = `wxHTML_FIND_EXACT`
	)		const

virtual

Find a cell inside this cell positioned at the given coordinates (relative to this's positions).

Returns NULL if no such cell exists. The flag can be used to specify whether to look for terminal or nonterminal cells or both. In either case, returned cell is deepest cell in cells tree that contains [x,y].

◆ GetDescent()

int wxHtmlCell::GetDescent ( ) const

Returns descent value of the cell (m_Descent member).

See explanation:

◆ GetFirstChild()

virtual wxHtmlCell* wxHtmlCell::GetFirstChild ( ) const

virtual

Returns pointer to the first cell in the list.

You can then use child's GetNext() method to obtain pointer to the next cell in list.

Note: This shouldn't be used by the end user. If you need some way of finding particular cell in the list, try Find() method instead.

◆ GetHeight()

int wxHtmlCell::GetHeight ( ) const

Returns height of the cell (m_Height member).

◆ GetId()

const wxString& wxHtmlCell::GetId ( ) const

Returns unique cell identifier if there is any, the empty string otherwise.

◆ GetLink()

virtual wxHtmlLinkInfo* wxHtmlCell::GetLink	(	int	x = `0`,
		int	y = `0`
	)		const

virtual

Returns hypertext link if associated with this cell or NULL otherwise.

See wxHtmlLinkInfo. (Note: this makes sense only for visible tags).

Parameters

x,y	Coordinates of position where the user pressed mouse button. These coordinates are used e.g. by COLORMAP. Values are relative to the upper left corner of THIS cell (i.e. from 0 to m_Width or m_Height)

◆ GetMouseCursor()

virtual wxCursor wxHtmlCell::GetMouseCursor ( wxHtmlWindowInterface * window ) const

virtual

Returns cursor to show when mouse pointer is over the cell.

Parameters

window interface to the parent HTML window

See also: GetMouseCursorAt()

◆ GetMouseCursorAt()

virtual wxCursor wxHtmlCell::GetMouseCursorAt	(	wxHtmlWindowInterface *	window,
		const wxPoint &	rePos
	)		const

virtual

Returns cursor to show when mouse pointer is over the specified point.

This function should be overridden instead of GetMouseCursorAt() if the cursor should depend on the exact position of the mouse in the window.

Parameters

window	interface to the parent HTML window
rePos	Position to show cursor.

Since: 3.0

◆ GetNext()

wxHtmlCell* wxHtmlCell::GetNext ( ) const

Returns pointer to the next cell in list (see htmlcell.h if you're interested in details).

◆ GetParent()

wxHtmlContainerCell* wxHtmlCell::GetParent ( ) const

Returns pointer to parent container.

◆ GetPosX()

int wxHtmlCell::GetPosX ( ) const

Returns X position within parent (the value is relative to parent's upper left corner).

The returned value is meaningful only if parent's Layout() was called before!

◆ GetPosY()

int wxHtmlCell::GetPosY ( ) const

Returns Y position within parent (the value is relative to parent's upper left corner).

The returned value is meaningful only if parent's Layout() was called before!

◆ GetWidth()

int wxHtmlCell::GetWidth ( ) const

Returns width of the cell (m_Width member).

◆ Layout()

virtual void wxHtmlCell::Layout ( int w )

virtual

Layouts the cell.

This method performs two actions:

adjusts the cell's width according to the fact that maximal possible width is w (this has sense when working with horizontal lines, tables etc.)
prepares layout (=fill-in m_PosX, m_PosY (and sometimes m_Height) members) based on actual width w

It must be called before displaying cells structure because m_PosX and m_PosY are undefined (or invalid) before calling Layout().

◆ ProcessMouseClick()

virtual bool wxHtmlCell::ProcessMouseClick	(	wxHtmlWindowInterface *	window,
		const wxPoint &	pos,
		const wxMouseEvent &	event
	)

virtual

This function is simple event handler.

Each time the user clicks mouse button over a cell within wxHtmlWindow this method of that cell is called. Default behaviour is to call wxHtmlWindow::LoadPage.

Parameters

window	interface to the parent HTML window
pos	coordinates of mouse click (this is relative to cell's origin
event	mouse event that triggered the call

Returns: true if a link was clicked, false otherwise.

Since: 2.7.0 (before OnMouseClick() method served a similar purpose).

Note: If you need more "advanced" event handling you should use wxHtmlBinderCell instead.

◆ SetId()

void wxHtmlCell::SetId ( const wxString & id )

Sets unique cell identifier.

Default value is no identifier, i.e. empty string.

◆ SetLink()

void wxHtmlCell::SetLink ( const wxHtmlLinkInfo & link )

Sets the hypertext link associated with this cell.

(Default value is wxHtmlLinkInfo("", "") (no link))

◆ SetNext()

void wxHtmlCell::SetNext ( wxHtmlCell * cell )

Sets the next cell in the list.

This shouldn't be called by user - it is to be used only by wxHtmlContainerCell::InsertCell.

◆ SetParent()

void wxHtmlCell::SetParent ( wxHtmlContainerCell * p )

Sets parent container of this cell.

This is called from wxHtmlContainerCell::InsertCell.

◆ SetPos()

virtual void wxHtmlCell::SetPos	(	int	x,
		int	y
	)

virtual

Sets the cell's position within parent container.

Detailed Description

Public Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ wxHtmlCell()

Member Function Documentation

◆ AdjustPagebreak()

◆ ConvertToText()

◆ Draw()

◆ DrawInvisible()

◆ Find()

◆ FindCellByPos()

◆ GetDescent()

◆ GetFirstChild()

◆ GetHeight()

◆ GetId()

◆ GetLink()

◆ GetMouseCursor()

◆ GetMouseCursorAt()

◆ GetNext()

◆ GetParent()

◆ GetPosX()

◆ GetPosY()

◆ GetWidth()

◆ Layout()

◆ ProcessMouseClick()

◆ SetId()

◆ SetLink()

◆ SetNext()

◆ SetParent()

◆ SetPos()