Basic TCanvasImp ABI implementation for Web-based GUI Provides painting of main ROOT6 classes in web browsers.
Definition at line 34 of file TWebCanvas.h.
Classes | |
struct | PadStatus |
struct | WebConn |
Public Types | |
using | ObjectSelectSignal_t = std::function< void(TPad *, TObject *)> |
Function type for signals, invoked when object is selected. | |
using | PadClickedSignal_t = std::function< void(TPad *, int, int)> |
Function type for pad-click signals. | |
using | PadSignal_t = std::function< void(TPad *)> |
Function type for pad-related signals - like activate pad signal. | |
using | UpdatedSignal_t = std::function< void()> |
Function type for signals, invoked when canvas drawing or update is completed. | |
Public Member Functions | |
TWebCanvas (TCanvas *c, const char *name, Int_t x, Int_t y, UInt_t width, UInt_t height, Bool_t readonly=kTRUE) | |
Constructor. | |
virtual | ~TWebCanvas ()=default |
void | ActivateInEditor (TPad *pad, TObject *obj) |
Activate object in editor in web browser. | |
void | AddCustomClass (const std::string &clname, bool with_derived=false) |
Assign custom class. | |
void | Close () override |
Close web canvas - not implemented. | |
void | ForceUpdate () override |
Increment canvas version and force sending data to client - do not wait for reply. | |
Bool_t | GetCanCreateObjects () const |
Bool_t | GetLongerPolling () const |
Int_t | GetPaletteDelivery () const |
Int_t | GetPrimitivesMerge () const |
Int_t | GetStyleDelivery () const |
const std::shared_ptr< ROOT::Experimental::RWebWindow > & | GetWebWindow () const |
UInt_t | GetWindowGeometry (Int_t &x, Int_t &y, UInt_t &w, UInt_t &h) override |
Returns window geometry including borders and menus. | |
Bool_t | HasEditor () const override |
Returns kTRUE if web canvas has graphical editor. | |
Bool_t | HasMenuBar () const override |
Returns kTRUE if web canvas has menu bar. | |
Bool_t | HasStatusBar () const override |
Returns kTRUE if web canvas has status bar. | |
Bool_t | HasToolBar () const override |
Bool_t | HasToolTips () const override |
Returns kTRUE if tooltips are activated in web canvas. | |
Int_t | InitWindow () override |
Initialize window for the web canvas At this place canvas is not yet register to the list of canvases - one cannot call RWebWindow::Show() | |
TClass * | IsA () const override |
Bool_t | IsAsyncMode () const |
bool | IsCustomClass (const TClass *cl) const |
Checks if class belongs to custom. | |
virtual Bool_t | IsReadOnly () const |
void | SetActivePadChangedHandler (PadSignal_t func) |
void | SetAsyncMode (Bool_t on=kTRUE) |
void | SetCanCreateObjects (Bool_t on=kTRUE) |
void | SetCustomScripts (const std::string &src) |
Configures custom script for canvas. | |
void | SetLongerPolling (Bool_t on) |
void | SetObjSelectHandler (ObjectSelectSignal_t func) |
void | SetPadClickedHandler (PadClickedSignal_t func) |
void | SetPadDblClickedHandler (PadClickedSignal_t func) |
void | SetPaletteDelivery (Int_t val) |
void | SetPrimitivesMerge (Int_t cnt) |
void | SetStyleDelivery (Int_t val) |
void | SetUpdatedHandler (UpdatedSignal_t func) |
void | Show () override |
Show canvas in browser window. | |
void | ShowEditor (Bool_t show=kTRUE) override |
void | ShowMenuBar (Bool_t show=kTRUE) override |
void | ShowStatusBar (Bool_t show=kTRUE) override |
void | ShowToolBar (Bool_t show=kTRUE) override |
void | ShowToolTips (Bool_t show=kTRUE) override |
void | ShowWebWindow (const ROOT::Experimental::RWebDisplayArgs &user_args="") |
Show canvas in specified place. | |
void | Streamer (TBuffer &) override |
void | StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b) |
Public Member Functions inherited from TCanvasImp | |
TCanvasImp (TCanvas *c, const char *name, Int_t x, Int_t y, UInt_t width, UInt_t height) | |
TCanvasImp (TCanvas *c, const char *name, UInt_t width, UInt_t height) | |
TCanvasImp (TCanvas *c=nullptr) | |
virtual | ~TCanvasImp () |
TCanvas * | Canvas () const |
virtual void | Iconify () |
virtual void | RaiseWindow () |
virtual void | ReallyDelete () |
virtual void | SetCanvasSize (UInt_t w, UInt_t h) |
virtual void | SetStatusText (const char *text=nullptr, Int_t partidx=0) |
virtual void | SetWindowPosition (Int_t x, Int_t y) |
virtual void | SetWindowSize (UInt_t width, UInt_t height) |
virtual void | SetWindowTitle (const char *newTitle) |
void | StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b) |
Static Public Member Functions | |
static TClass * | Class () |
static const char * | Class_Name () |
static constexpr Version_t | Class_Version () |
static TString | CreateCanvasJSON (TCanvas *c, Int_t json_compression=0) |
Create JSON painting output for given canvas Produce JSON can be used for offline drawing with JSROOT. | |
static TString | CreatePadJSON (TPad *pad, Int_t json_compression=0) |
static const char * | DeclFileName () |
static TCanvasImp * | NewCanvas (TCanvas *c, const char *name, Int_t x, Int_t y, UInt_t width, UInt_t height) |
Static method to create TWebCanvas instance Used by plugin manager. | |
static bool | ProduceImage (TPad *pad, const char *filename, Int_t width=0, Int_t height=0) |
Create image using batch (headless) capability of Chrome or Firefox browsers Supported png, jpeg, svg, pdf formats. | |
static Int_t | StoreCanvasJSON (TCanvas *c, const char *filename, const char *option="") |
Create JSON painting output for given canvas and store into the file See TBufferJSON::ExportToFile() method for more details. | |
Static Public Member Functions inherited from TCanvasImp | |
static TClass * | Class () |
static const char * | Class_Name () |
static constexpr Version_t | Class_Version () |
static const char * | DeclFileName () |
Protected Types | |
using | PadPaintingReady_t = std::function< void(TPadWebSnapshot *)> |
Function called when pad painting produced. | |
Protected Member Functions | |
void | AddColorsPalette (TPadWebSnapshot &master) |
Add special canvas objects like colors list at selected palette. | |
Bool_t | AddToSendQueue (unsigned connid, const std::string &msg) |
Add message to send queue for specified connection If connid == 0, message will be add to all connections Return kFALSE if queue is full or connection is not exists. | |
void | AssignStatusBits (UInt_t bits) |
Assign clients bits. | |
UInt_t | CalculateColorsHash () |
Calculate hash function for all colors and palette. | |
virtual Bool_t | CanCreateObject (const std::string &) |
void | CheckCanvasModified (bool force_modified=false) |
Check if any pad on the canvas was modified If yes, increment version of correspondent pad. | |
void | CheckDataToSend (unsigned connid=0) |
Check if any data should be send to client If connid != 0, only selected connection will be checked. | |
void | CheckPadModified (TPad *pad) |
Returns true if any pad in the canvas were modified Reset modified flags, increment canvas version (if inc_version is true) | |
void | CreateObjectSnapshot (TPadWebSnapshot &master, TPad *pad, TObject *obj, const char *opt, TWebPS *masterps=nullptr) |
Creates representation of the object for painting in web browser. | |
TVirtualPadPainter * | CreatePadPainter () override |
Creates web-based pad painter. | |
void | CreatePadSnapshot (TPadWebSnapshot &paddata, TPad *pad, Long64_t version, PadPaintingReady_t func) |
Create snapshot for pad and all primitives Callback function is used to create JSON in the middle of data processing - when all misc objects removed from canvas list of primitives or histogram list of functions After that objects are moved back to their places. | |
virtual Bool_t | DecodePadOptions (const std::string &, bool process_execs=false) |
Decode all pad options, which includes ranges plus objects options. | |
TObject * | FindPrimitive (const std::string &id, int idcnt=1, TPad *pad=nullptr, TObjLink **objlnk=nullptr, TPad **objpad=nullptr) |
Search of object with given id in list of primitives One could specify pad where search could be start Also if object is in list of primitives, one could ask for entry link for such object, This can allow to change draw option. | |
Bool_t | IsFirstConn (unsigned connid) const |
virtual Bool_t | IsJSSupportedClass (TObject *obj, Bool_t many_primitives=kFALSE) |
Returns kTRUE when object is fully supported on JSROOT side In ROOT7 Paint function will just return appropriate flag that object can be displayed on JSROOT side. | |
Bool_t | IsLocked () override |
Bool_t | IsWeb () const override |
void | Lock () override |
Bool_t | PerformUpdate () override |
if canvas or any subpad was modified, scan all primitives in the TCanvas and subpads and convert them into the structure which will be delivered to JSROOT client | |
virtual Bool_t | ProcessData (unsigned connid, const std::string &arg) |
Handle data from web browser Returns kFALSE if message was not processed. | |
void | ProcessExecs (TPad *pad, TExec *extra=nullptr) |
Process TExec objects in the pad. | |
TPad * | ProcessObjectOptions (TWebObjectOptions &item, TPad *pad, int idcnt=1) |
Process data for single primitive Returns object pad if object was modified. | |
void | ShowCmd (const std::string &arg, Bool_t show) |
Function used to send command to browser to toggle menu, toolbar, editors, ... | |
void | Unlock () override |
Bool_t | WaitWhenCanvasPainted (Long64_t ver) |
Wait when specified version of canvas was painted and confirmed by browser. | |
Protected Member Functions inherited from TCanvasImp | |
TCanvasImp (const TCanvasImp &ci) | |
TCanvasImp & | operator= (const TCanvasImp &ci) |
Protected Attributes | |
PadSignal_t | fActivePadChangedSignal |
! signal emitted when active pad changed in the canvas | |
Bool_t | fAsyncMode {kFALSE} |
! when true, methods like TCanvas::Update will never block | |
Bool_t | fCanCreateObjects {kTRUE} |
! indicates if canvas allowed to create extra objects for interactive painting | |
Long64_t | fCanvVersion {1} |
! actual canvas version, changed with every new Modified() call | |
UInt_t | fClientBits {0} |
! latest status bits from client like editor visible or not | |
UInt_t | fColorsHash {0} |
! last hash of colors/palette | |
Long64_t | fColorsVersion {0} |
! current colors/palette version, checked every time when new snapshot created | |
std::vector< std::string > | fCustomClasses |
! list of custom classes, which can be delivered as is to client | |
std::string | fCustomScripts |
! custom JavaScript code or URL on JavaScript files to load before start drawing | |
Int_t | fJsonComp {0} |
! compression factor for messages send to the client | |
Bool_t | fLongerPolling {kFALSE} |
! when true, make longer polling in blocking operations | |
ObjectSelectSignal_t | fObjSelectSignal |
! signal emitted when new object selected in the pad | |
PadClickedSignal_t | fPadClickedSignal |
! signal emitted when simple mouse click performed on the pad | |
PadClickedSignal_t | fPadDblClickedSignal |
! signal emitted when simple mouse click performed on the pad | |
std::map< TPad *, PadStatus > | fPadsStatus |
! map of pads in canvas and their status flags | |
Int_t | fPaletteDelivery {1} |
! colors palette delivery 0:never, 1:once, 2:always, 3:per subpad | |
TList | fPrimitivesLists |
! list of lists of primitives, temporary collected during painting | |
Int_t | fPrimitivesMerge {100} |
! number of PS primitives, which will be merged together | |
Bool_t | fProcessingData {kFALSE} |
! flag used to prevent blocking methods when process data is invoked | |
Bool_t | fReadOnly {true} |
!< configured display | |
Int_t | fStyleDelivery {0} |
! gStyle delivery to clients: 0:never, 1:once, 2:always | |
UInt_t | fStyleHash {0} |
! last hash of gStyle | |
Long64_t | fStyleVersion {0} |
! current gStyle object version, checked every time when new snapshot created | |
UpdatedSignal_t | fUpdatedSignal |
! signal emitted when canvas updated or state is changed | |
std::vector< WebConn > | fWebConn |
! connections | |
std::shared_ptr< ROOT::Experimental::RWebWindow > | fWindow |
Protected Attributes inherited from TCanvasImp | |
TCanvas * | fCanvas {nullptr} |
#include <TWebCanvas.h>
using TWebCanvas::ObjectSelectSignal_t = std::function<void(TPad *, TObject *)> |
Function type for signals, invoked when object is selected.
Definition at line 47 of file TWebCanvas.h.
using TWebCanvas::PadClickedSignal_t = std::function<void(TPad *, int, int)> |
Function type for pad-click signals.
Definition at line 44 of file TWebCanvas.h.
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Function called when pad painting produced.
Definition at line 52 of file TWebCanvas.h.
using TWebCanvas::PadSignal_t = std::function<void(TPad *)> |
Function type for pad-related signals - like activate pad signal.
Definition at line 41 of file TWebCanvas.h.
using TWebCanvas::UpdatedSignal_t = std::function<void()> |
Function type for signals, invoked when canvas drawing or update is completed.
Definition at line 38 of file TWebCanvas.h.
TWebCanvas::TWebCanvas | ( | TCanvas * | c, |
const char * | name, | ||
Int_t | x, | ||
Int_t | y, | ||
UInt_t | width, | ||
UInt_t | height, | ||
Bool_t | readonly = kTRUE |
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Constructor.
Definition at line 66 of file TWebCanvas.cxx.
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Activate object in editor in web browser.
Definition at line 779 of file TWebCanvas.cxx.
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Add special canvas objects like colors list at selected palette.
Definition at line 275 of file TWebCanvas.cxx.
void TWebCanvas::AddCustomClass | ( | const std::string & | clname, |
bool | with_derived = false |
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Assign custom class.
Definition at line 169 of file TWebCanvas.cxx.
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Add message to send queue for specified connection If connid == 0, message will be add to all connections Return kFALSE if queue is full or connection is not exists.
Definition at line 622 of file TWebCanvas.cxx.
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Assign clients bits.
Definition at line 824 of file TWebCanvas.cxx.
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Calculate hash function for all colors and palette.
Definition at line 252 of file TWebCanvas.cxx.
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Definition at line 143 of file TWebCanvas.h.
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Check if any pad on the canvas was modified If yes, increment version of correspondent pad.
Definition at line 1487 of file TWebCanvas.cxx.
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Check if any data should be send to client If connid != 0, only selected connection will be checked.
Definition at line 639 of file TWebCanvas.cxx.
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Returns true if any pad in the canvas were modified Reset modified flags, increment canvas version (if inc_version is true)
Definition at line 1464 of file TWebCanvas.cxx.
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Definition at line 234 of file TWebCanvas.h.
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Close web canvas - not implemented.
Reimplemented from TCanvasImp.
Definition at line 700 of file TWebCanvas.cxx.
Create JSON painting output for given canvas Produce JSON can be used for offline drawing with JSROOT.
Definition at line 1632 of file TWebCanvas.cxx.
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Creates representation of the object for painting in web browser.
Definition at line 196 of file TWebCanvas.cxx.
Definition at line 1606 of file TWebCanvas.cxx.
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Creates web-based pad painter.
Reimplemented from TCanvasImp.
Definition at line 88 of file TWebCanvas.cxx.
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Create snapshot for pad and all primitives Callback function is used to create JSON in the middle of data processing - when all misc objects removed from canvas list of primitives or histogram list of functions After that objects are moved back to their places.
Definition at line 311 of file TWebCanvas.cxx.
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Definition at line 234 of file TWebCanvas.h.
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Decode all pad options, which includes ranges plus objects options.
Definition at line 836 of file TWebCanvas.cxx.
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Search of object with given id in list of primitives One could specify pad where search could be start Also if object is in list of primitives, one could ask for entry link for such object, This can allow to change draw option.
Definition at line 1772 of file TWebCanvas.cxx.
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Increment canvas version and force sending data to client - do not wait for reply.
Reimplemented from TCanvasImp.
Definition at line 1555 of file TWebCanvas.cxx.
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Definition at line 204 of file TWebCanvas.h.
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Definition at line 216 of file TWebCanvas.h.
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Definition at line 210 of file TWebCanvas.h.
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Definition at line 213 of file TWebCanvas.h.
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Definition at line 207 of file TWebCanvas.h.
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Definition at line 157 of file TWebCanvas.h.
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Returns window geometry including borders and menus.
Reimplemented from TCanvasImp.
Definition at line 1522 of file TWebCanvas.cxx.
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Returns kTRUE if web canvas has graphical editor.
Reimplemented from TCanvasImp.
Definition at line 792 of file TWebCanvas.cxx.
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Returns kTRUE if web canvas has menu bar.
Reimplemented from TCanvasImp.
Definition at line 800 of file TWebCanvas.cxx.
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Returns kTRUE if web canvas has status bar.
Reimplemented from TCanvasImp.
Definition at line 808 of file TWebCanvas.cxx.
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Reimplemented from TCanvasImp.
Definition at line 194 of file TWebCanvas.h.
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Returns kTRUE if tooltips are activated in web canvas.
Reimplemented from TCanvasImp.
Definition at line 816 of file TWebCanvas.cxx.
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Initialize window for the web canvas At this place canvas is not yet register to the list of canvases - one cannot call RWebWindow::Show()
Reimplemented from TCanvasImp.
Definition at line 80 of file TWebCanvas.cxx.
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Reimplemented from TCanvasImp.
Definition at line 234 of file TWebCanvas.h.
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Definition at line 224 of file TWebCanvas.h.
Checks if class belongs to custom.
Definition at line 180 of file TWebCanvas.cxx.
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Definition at line 133 of file TWebCanvas.h.
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Returns kTRUE when object is fully supported on JSROOT side In ROOT7 Paint function will just return appropriate flag that object can be displayed on JSROOT side.
Definition at line 97 of file TWebCanvas.cxx.
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Reimplemented from TCanvasImp.
Definition at line 109 of file TWebCanvas.h.
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Definition at line 159 of file TWebCanvas.h.
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Reimplemented from TCanvasImp.
Definition at line 111 of file TWebCanvas.h.
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Reimplemented from TCanvasImp.
Definition at line 107 of file TWebCanvas.h.
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Static method to create TWebCanvas instance Used by plugin manager.
Definition at line 1906 of file TWebCanvas.cxx.
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if canvas or any subpad was modified, scan all primitives in the TCanvas and subpads and convert them into the structure which will be delivered to JSROOT client
Reimplemented from TCanvasImp.
Definition at line 1537 of file TWebCanvas.cxx.
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Handle data from web browser Returns kFALSE if message was not processed.
Definition at line 1097 of file TWebCanvas.cxx.
Process TExec objects in the pad.
Definition at line 1064 of file TWebCanvas.cxx.
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Process data for single primitive Returns object pad if object was modified.
Definition at line 1696 of file TWebCanvas.cxx.
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Create image using batch (headless) capability of Chrome or Firefox browsers Supported png, jpeg, svg, pdf formats.
Definition at line 1680 of file TWebCanvas.cxx.
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Definition at line 198 of file TWebCanvas.h.
Definition at line 223 of file TWebCanvas.h.
Definition at line 203 of file TWebCanvas.h.
void TWebCanvas::SetCustomScripts | ( | const std::string & | src | ) |
Configures custom script for canvas.
If started from "load:" or "assert:" prefix will be loaded with JSROOT.AssertPrerequisites function Script should implement custom user classes, which transferred as is to client In the script draw handler for appropriate classes would be assigned
Definition at line 161 of file TWebCanvas.cxx.
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Definition at line 215 of file TWebCanvas.h.
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Definition at line 201 of file TWebCanvas.h.
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Definition at line 199 of file TWebCanvas.h.
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Definition at line 200 of file TWebCanvas.h.
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Definition at line 209 of file TWebCanvas.h.
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Definition at line 212 of file TWebCanvas.h.
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Definition at line 206 of file TWebCanvas.h.
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Definition at line 197 of file TWebCanvas.h.
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Show canvas in browser window.
Reimplemented from TCanvasImp.
Definition at line 757 of file TWebCanvas.cxx.
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Function used to send command to browser to toggle menu, toolbar, editors, ...
Definition at line 770 of file TWebCanvas.cxx.
Reimplemented from TCanvasImp.
Definition at line 169 of file TWebCanvas.h.
Reimplemented from TCanvasImp.
Definition at line 167 of file TWebCanvas.h.
Reimplemented from TCanvasImp.
Definition at line 168 of file TWebCanvas.h.
Reimplemented from TCanvasImp.
Definition at line 170 of file TWebCanvas.h.
Reimplemented from TCanvasImp.
Definition at line 171 of file TWebCanvas.h.
void TWebCanvas::ShowWebWindow | ( | const ROOT::Experimental::RWebDisplayArgs & | args = "" | ) |
Show canvas in specified place.
If parameter args not specified, default ROOT web display will be used
Definition at line 708 of file TWebCanvas.cxx.
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Create JSON painting output for given canvas and store into the file See TBufferJSON::ExportToFile() method for more details.
Definition at line 1656 of file TWebCanvas.cxx.
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Reimplemented from TCanvasImp.
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Definition at line 234 of file TWebCanvas.h.
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Reimplemented from TCanvasImp.
Definition at line 108 of file TWebCanvas.h.
Wait when specified version of canvas was painted and confirmed by browser.
Definition at line 1568 of file TWebCanvas.cxx.
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! signal emitted when active pad changed in the canvas
Definition at line 102 of file TWebCanvas.h.
! when true, methods like TCanvas::Update will never block
Definition at line 95 of file TWebCanvas.h.
! indicates if canvas allowed to create extra objects for interactive painting
Definition at line 92 of file TWebCanvas.h.
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! actual canvas version, changed with every new Modified() call
Definition at line 83 of file TWebCanvas.h.
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! latest status bits from client like editor visible or not
Definition at line 84 of file TWebCanvas.h.
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! last hash of colors/palette
Definition at line 99 of file TWebCanvas.h.
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! current colors/palette version, checked every time when new snapshot created
Definition at line 98 of file TWebCanvas.h.
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! list of custom classes, which can be delivered as is to client
Definition at line 91 of file TWebCanvas.h.
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! custom JavaScript code or URL on JavaScript files to load before start drawing
Definition at line 90 of file TWebCanvas.h.
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! compression factor for messages send to the client
Definition at line 89 of file TWebCanvas.h.
! when true, make longer polling in blocking operations
Definition at line 93 of file TWebCanvas.h.
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! signal emitted when new object selected in the pad
Definition at line 105 of file TWebCanvas.h.
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! signal emitted when simple mouse click performed on the pad
Definition at line 103 of file TWebCanvas.h.
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! signal emitted when simple mouse click performed on the pad
Definition at line 104 of file TWebCanvas.h.
! map of pads in canvas and their status flags
Definition at line 78 of file TWebCanvas.h.
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! colors palette delivery 0:never, 1:once, 2:always, 3:per subpad
Definition at line 87 of file TWebCanvas.h.
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! list of lists of primitives, temporary collected during painting
Definition at line 85 of file TWebCanvas.h.
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! number of PS primitives, which will be merged together
Definition at line 88 of file TWebCanvas.h.
! flag used to prevent blocking methods when process data is invoked
Definition at line 94 of file TWebCanvas.h.
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!< configured display
! in read-only mode canvas cannot be changed from client side
Definition at line 82 of file TWebCanvas.h.
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! gStyle delivery to clients: 0:never, 1:once, 2:always
Definition at line 86 of file TWebCanvas.h.
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! last hash of gStyle
Definition at line 97 of file TWebCanvas.h.
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! current gStyle object version, checked every time when new snapshot created
Definition at line 96 of file TWebCanvas.h.
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! signal emitted when canvas updated or state is changed
Definition at line 101 of file TWebCanvas.h.
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! connections
Definition at line 76 of file TWebCanvas.h.
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Definition at line 80 of file TWebCanvas.h.