Handle of created web-based display Depending from type of web display, holds handle of started browser process or other display-specific information to correctly stop and cleanup display.

Definition at line 25 of file RWebDisplayHandle.hxx.

Classes
class	BrowserCreator

class	ChromeCreator

class	Creator
	!< page content More...

class	FirefoxCreator

class	SafariCreator

Public Member Functions
	RWebDisplayHandle (const std::string &url)
	constructor

virtual	~RWebDisplayHandle ()=default
	required virtual destructor for correct cleanup at the end

const std::string &	GetContent () const
	get content

const std::string &	GetUrl () const
	returns url of start web display

virtual bool	Resize (int, int)
	resize web window - if possible

void	SetContent (const std::string &cont)
	set content

Static Public Member Functions
static bool	CanProduceImages (const std::string &browser="")
	Returns true if image production for specified browser kind is supported If browser not specified - use currently configured browser or try to test existing web browsers.

static std::unique_ptr< RWebDisplayHandle >	Display (const RWebDisplayArgs &args)
	Create web display.

static bool	DisplayUrl (const std::string &url)
	Display provided url in configured web browser.

static std::string	GetImageFormat (const std::string &fname)
	Detect image format There is special handling of ".screenshot.pdf" and ".screenshot.png" extensions Creation of such files relies on headless browser functionality and fully supported only by Chrome browser.

static bool	NeedHttpServer (const RWebDisplayArgs &args)
	Check if http server required for display.

static bool	ProduceImage (const std::string &fname, const std::string &json, int width=800, int height=600, const char *batch_file=nullptr)
	Produce image file using JSON data as source Invokes JSROOT drawing functionality in headless browser - Google Chrome or Mozilla Firefox.

static bool	ProduceImages (const std::string &fname, const std::vector< std::string > &jsons, const std::vector< int > &widths, const std::vector< int > &heights, const char *batch_file=nullptr)
	Produce image file(s) using JSON data as source Invokes JSROOT drawing functionality in headless browser - Google Chrome or Mozilla Firefox.

static bool	ProduceImages (const std::vector< std::string > &fnames, const std::vector< std::string > &jsons, const std::vector< int > &widths, const std::vector< int > &heights, const char *batch_file=nullptr)
	Produce image file(s) using JSON data as source Invokes JSROOT drawing functionality in headless browser - Google Chrome or Mozilla Firefox.

static std::vector< std::string >	ProduceImagesNames (const std::string &fname, unsigned nfiles=1)
	Produce vector of file names for specified file pattern Depending from supported file forma.

Static Protected Member Functions
static bool	CheckIfCanProduceImages (RWebDisplayArgs &args)
	Checks if configured browser can be used for image production.

static std::unique_ptr< Creator > &	FindCreator (const std::string &name, const std::string &libname="")
	Search for specific browser creator If not found, try to add one.

static std::map< std::string, std::unique_ptr< Creator > > &	GetMap ()
	Static holder of registered creators of web displays.

Private Attributes
std::string	fContent
	!< URL used to launch display

std::string	fUrl

#include <ROOT/RWebDisplayHandle.hxx>

Inheritance diagram for ROOT::RWebDisplayHandle:

[legend]

Constructor & Destructor Documentation

◆ RWebDisplayHandle()

ROOT::RWebDisplayHandle::RWebDisplayHandle ( const std::string & url )

inline

constructor

Definition at line 92 of file RWebDisplayHandle.hxx.

◆ ~RWebDisplayHandle()

virtual ROOT::RWebDisplayHandle::~RWebDisplayHandle ( )

virtualdefault

required virtual destructor for correct cleanup at the end

Member Function Documentation

◆ CanProduceImages()

bool RWebDisplayHandle::CanProduceImages ( const std::string & browser = "" )

static

Returns true if image production for specified browser kind is supported If browser not specified - use currently configured browser or try to test existing web browsers.

Definition at line 925 of file RWebDisplayHandle.cxx.

◆ CheckIfCanProduceImages()

bool RWebDisplayHandle::CheckIfCanProduceImages ( RWebDisplayArgs & args )

staticprotected

Checks if configured browser can be used for image production.

Definition at line 877 of file RWebDisplayHandle.cxx.

◆ Display()

std::unique_ptr< RWebDisplayHandle > RWebDisplayHandle::Display ( const RWebDisplayArgs & args )

static

Create web display.

Parameters

args	- defines where and how to display web window Returns RWebDisplayHandle, which holds information of running browser application Can be used fully independent from RWebWindow classes just to show any web page

Definition at line 757 of file RWebDisplayHandle.cxx.

◆ DisplayUrl()

bool RWebDisplayHandle::DisplayUrl ( const std::string & url )

static

Display provided url in configured web browser.

Parameters

url

- specified URL address like https://root.cern Browser can specified when starting root --web=firefox Returns true when browser started It is convenience method, equivalent to:

RWebDisplayArgs args;
args.SetUrl(url);
args.SetStandalone(false);
auto handle = RWebDisplayHandle::Display(args);

Definition at line 863 of file RWebDisplayHandle.cxx.

◆ FindCreator()

std::unique_ptr< RWebDisplayHandle::Creator > & RWebDisplayHandle::FindCreator	(	const std::string &	name,
		const std::string &	libname = `""`
	)

staticprotected

Search for specific browser creator If not found, try to add one.

Parameters

name	- creator name like ChromeCreator
libname	- shared library name where creator could be provided

Definition at line 71 of file RWebDisplayHandle.cxx.

◆ GetContent()

const std::string & ROOT::RWebDisplayHandle::GetContent ( ) const

inline

get content

Definition at line 103 of file RWebDisplayHandle.hxx.

◆ GetImageFormat()

std::string RWebDisplayHandle::GetImageFormat ( const std::string & fname )

static

Detect image format There is special handling of ".screenshot.pdf" and ".screenshot.png" extensions Creation of such files relies on headless browser functionality and fully supported only by Chrome browser.

Definition at line 937 of file RWebDisplayHandle.cxx.

◆ GetMap()

std::map< std::string, std::unique_ptr< RWebDisplayHandle::Creator > > & RWebDisplayHandle::GetMap ( )

staticprotected

Static holder of registered creators of web displays.

Definition at line 59 of file RWebDisplayHandle.cxx.

◆ GetUrl()

const std::string & ROOT::RWebDisplayHandle::GetUrl ( ) const

inline

returns url of start web display

Definition at line 98 of file RWebDisplayHandle.hxx.

◆ NeedHttpServer()

bool RWebDisplayHandle::NeedHttpServer ( const RWebDisplayArgs & args )

static

Check if http server required for display.

Parameters

args	- defines where and how to display web window

Definition at line 721 of file RWebDisplayHandle.cxx.

◆ ProduceImage()

bool RWebDisplayHandle::ProduceImage	(	const std::string &	fname,
		const std::string &	json,
		int	width = `800`,
		int	height = `600`,
		const char *	batch_file = `nullptr`
	)

static

Produce image file using JSON data as source Invokes JSROOT drawing functionality in headless browser - Google Chrome or Mozilla Firefox.

Definition at line 970 of file RWebDisplayHandle.cxx.

◆ ProduceImages() [1/2]

bool RWebDisplayHandle::ProduceImages	(	const std::string &	fname,
		const std::vector< std::string > &	jsons,
		const std::vector< int > &	widths,
		const std::vector< int > &	heights,
		const char *	batch_file = `nullptr`
	)

static

Produce image file(s) using JSON data as source Invokes JSROOT drawing functionality in headless browser - Google Chrome or Mozilla Firefox.

Definition at line 1017 of file RWebDisplayHandle.cxx.

◆ ProduceImages() [2/2]

bool RWebDisplayHandle::ProduceImages	(	const std::vector< std::string > &	fnames,
		const std::vector< std::string > &	jsons,
		const std::vector< int > &	widths,
		const std::vector< int > &	heights,
		const char *	batch_file = `nullptr`
	)

static

Produce image file(s) using JSON data as source Invokes JSROOT drawing functionality in headless browser - Google Chrome or Mozilla Firefox.

Definition at line 1026 of file RWebDisplayHandle.cxx.

◆ ProduceImagesNames()

std::vector< std::string > RWebDisplayHandle::ProduceImagesNames	(	const std::string &	fname,
		unsigned	nfiles = `1`
	)

static

Produce vector of file names for specified file pattern Depending from supported file forma.

Definition at line 980 of file RWebDisplayHandle.cxx.

◆ Resize()

virtual bool ROOT::RWebDisplayHandle::Resize	(	int	,
		int
	)

inlinevirtual

resize web window - if possible

Reimplemented in ROOT::RQt5WebDisplayHandle, ROOT::RQt6WebDisplayHandle, and RCefWebDisplayHandle.

Definition at line 106 of file RWebDisplayHandle.hxx.

◆ SetContent()

void ROOT::RWebDisplayHandle::SetContent ( const std::string & cont )

inline

set content

Definition at line 101 of file RWebDisplayHandle.hxx.

Member Data Documentation

◆ fContent

std::string ROOT::RWebDisplayHandle::fContent

private

!< URL used to launch display

Definition at line 29 of file RWebDisplayHandle.hxx.

◆ fUrl

std::string ROOT::RWebDisplayHandle::fUrl

private

Definition at line 27 of file RWebDisplayHandle.hxx.

Libraries for ROOT::RWebDisplayHandle:

[legend]

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

gui/webdisplay/inc/ROOT/RWebDisplayHandle.hxx
gui/webdisplay/src/RWebDisplayHandle.cxx

Classes

Public Member Functions

Static Public Member Functions

Static Protected Member Functions

Private Attributes

Constructor & Destructor Documentation

◆ RWebDisplayHandle()

◆ ~RWebDisplayHandle()

Member Function Documentation

◆ CanProduceImages()

◆ CheckIfCanProduceImages()

◆ Display()

◆ DisplayUrl()

◆ FindCreator()

◆ GetContent()

◆ GetImageFormat()

◆ GetMap()

◆ GetUrl()

◆ NeedHttpServer()

◆ ProduceImage()

◆ ProduceImages() [1/2]

◆ ProduceImages() [2/2]

◆ ProduceImagesNames()

◆ Resize()

◆ SetContent()

Member Data Documentation

◆ fContent

◆ fUrl