RWebDisplayArgs.cxx

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// Author: Sergey Linev <s.linev@gsi.de>
// Date: 2018-10-24
// Warning: This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!
 
/*************************************************************************
 * Copyright (C) 1995-2019, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#include <ROOT/RWebDisplayArgs.hxx>
 
#include <ROOT/RConfig.hxx>
#include <ROOT/RLogger.hxx>
#include <ROOT/RWebWindow.hxx>
 
#include "TROOT.h"
#include <string>
 
using namespace ROOT::Experimental;
 
RLogChannel &ROOT::Experimental::WebGUILog()
{
   static RLogChannel sLog("ROOT.WebGUI");
   return sLog;
}
 
 
/** \class ROOT::Experimental::RWebDisplayArgs
\ingroup webdisplay
 
Holds different arguments for starting browser with RWebDisplayHandle::Display() method
 
 */
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Default constructor - browser kind configured from gROOT->GetWebDisplay()
 
RWebDisplayArgs::RWebDisplayArgs()
{
   SetBrowserKind("");
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Constructor - browser kind specified as std::string
/// See SetBrowserKind() method for description of allowed parameters
 
RWebDisplayArgs::RWebDisplayArgs(const std::string &browser)
{
   SetBrowserKind(browser);
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Constructor - browser kind specified as const char *
/// See SetBrowserKind() method for description of allowed parameters
 
RWebDisplayArgs::RWebDisplayArgs(const char *browser)
{
   SetBrowserKind(browser);
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Constructor - specify window width and height
 
RWebDisplayArgs::RWebDisplayArgs(int width, int height, int x, int y, const std::string &browser)
{
   SetSize(width, height);
   SetPos(x, y);
   SetBrowserKind(browser);
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Constructor - specify master window and channel (if reserved already)
 
RWebDisplayArgs::RWebDisplayArgs(std::shared_ptr<RWebWindow> master, int channel)
{
   SetMasterWindow(master, channel);
}
 
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Destructor
 
RWebDisplayArgs::~RWebDisplayArgs()
{
  // must be defined here to correctly call RWebWindow destructor
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Set size of web browser window as string like "800x600"
 
bool RWebDisplayArgs::SetSizeAsStr(const std::string &str)
{
   auto separ = str.find("x");
   if ((separ == std::string::npos) || (separ == 0) || (separ == str.length()-1)) return false;
 
   int width = 0, height = 0;
 
   try {
      width = std::stoi(str.substr(0,separ));
      height = std::stoi(str.substr(separ+1));
   } catch(...) {
       return false;
   }
 
   if ((width<=0) || (height<=0))
      return false;
 
   SetSize(width, height);
   return true;
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Set position of web browser window as string like "100,100"
 
bool RWebDisplayArgs::SetPosAsStr(const std::string &str)
{
   auto separ = str.find(",");
   if ((separ == std::string::npos) || (separ == 0) || (separ == str.length()-1)) return false;
 
   int x = 0, y = 0;
 
   try {
      x = std::stoi(str.substr(0,separ));
      y = std::stoi(str.substr(separ+1));
   } catch(...) {
      return false;
   }
 
   if ((x<0) || (y<0))
      return false;
 
   SetPos(x, y);
   return true;
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Set browser kind as string argument
/// Recognized values:
///  chrome  - use Google Chrome web browser, supports headless mode from v60, default
///  firefox - use Mozilla Firefox browser, supports headless mode from v57
///   native - (or empty string) either chrome or firefox, only these browsers support batch (headless) mode
///  browser - default system web-browser, no batch mode
///   safari - Safari browser on Mac
///      cef - Chromium Embeded Framework, local display, local communication
///      qt5 - Qt5 WebEngine, local display, local communication
///    local - either cef or qt5
///   <prog> - any program name which will be started instead of default browser, like /usr/bin/opera
 
RWebDisplayArgs &RWebDisplayArgs::SetBrowserKind(const std::string &_kind)
{
   std::string kind = _kind;
 
   auto pos = kind.find("?");
   if (pos == 0) {
      SetUrlOpt(kind.substr(1));
      kind.clear();
   } else if (pos != std::string::npos) {
      SetUrlOpt(kind.substr(pos+1));
      kind.resize(pos);
   }
 
   pos = kind.find("size:");
   if (pos != std::string::npos) {
      auto epos = kind.find_first_of(" ;", pos+5);
      if (epos == std::string::npos) epos = kind.length();
      SetSizeAsStr(kind.substr(pos+5, epos-pos-5));
      kind.erase(pos, epos-pos);
   }
 
   pos = kind.find("pos:");
   if (pos != std::string::npos) {
      auto epos = kind.find_first_of(" ;", pos+4);
      if (epos == std::string::npos) epos = kind.length();
      SetPosAsStr(kind.substr(pos+4, epos-pos-4));
      kind.erase(pos, epos-pos);
   }
 
   // very special handling of qt5 which can specify pointer as a string
   if (kind.find("qt5:") == 0) {
      SetDriverData((void *) std::stoul(kind.substr(4)));
      kind.resize(3);
   }
 
   // remove all trailing spaces
   while ((kind.length() > 0) && (kind[kind.length()-1] == ' '))
      kind.resize(kind.length()-1);
 
   // remove any remaining spaces?
   // kind.erase(remove_if(kind.begin(), kind.end(), std::isspace), kind.end());
 
   if (kind.empty())
      kind = gROOT->GetWebDisplay().Data();
 
   if (kind == "local")
      SetBrowserKind(kLocal);
   else if (kind.empty() || (kind == "native"))
      SetBrowserKind(kNative);
   else if (kind == "firefox")
      SetBrowserKind(kFirefox);
   else if ((kind == "chrome") || (kind == "chromium"))
      SetBrowserKind(kChrome);
   else if ((kind == "cef") || (kind == "cef3"))
      SetBrowserKind(kCEF);
   else if ((kind == "qt") || (kind == "qt5"))
      SetBrowserKind(kQt5);
   else if ((kind == "embed") || (kind == "embedded"))
      SetBrowserKind(kEmbedded);
   else if (!SetSizeAsStr(kind))
      SetCustomExec(kind);
 
   return *this;
}
 
/////////////////////////////////////////////////////////////////////
/// Returns configured browser name
 
std::string RWebDisplayArgs::GetBrowserName() const
{
   switch (GetBrowserKind()) {
      case kChrome: return "chrome";
      case kFirefox: return "firefox";
      case kNative: return "native";
      case kCEF: return "cef";
      case kQt5: return "qt5";
      case kLocal: return "local";
      case kStandard: return "default";
      case kEmbedded: return "embed";
      case kCustom:
          auto pos = fExec.find(" ");
          return (pos == std::string::npos) ? fExec : fExec.substr(0,pos);
   }
 
   return "";
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Assign window and channel id where other window will be embed
 
void RWebDisplayArgs::SetMasterWindow(std::shared_ptr<RWebWindow> master, int channel)
{
   SetBrowserKind(kEmbedded);
   fMaster = master;
   fMasterChannel = channel;
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Append string to url options
/// Add "&" as separator if any options already exists
 
void RWebDisplayArgs::AppendUrlOpt(const std::string &opt)
{
   if (opt.empty()) return;
 
   if (!fUrlOpt.empty())
      fUrlOpt.append("&");
 
   fUrlOpt.append(opt);
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Returns full url, which is combined from URL and extra URL options
/// Takes into account "#" symbol in url - options are inserted before that symbol
 
std::string RWebDisplayArgs::GetFullUrl() const
{
   std::string url = GetUrl(), urlopt = GetUrlOpt();
   if (url.empty() || urlopt.empty()) return url;
 
   auto rpos = url.find("#");
   if (rpos == std::string::npos) rpos = url.length();
 
   if (url.find("?") != std::string::npos)
      url.insert(rpos, "&");
   else
      url.insert(rpos, "?");
   url.insert(rpos+1, urlopt);
 
   return url;
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// Configure custom web browser
/// Either just name of browser which can be used like "opera"
/// or full execution string which must includes $url like "/usr/bin/opera $url"
 
void RWebDisplayArgs::SetCustomExec(const std::string &exec)
{
   SetBrowserKind(kCustom);
   fExec = exec;
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// returns custom executable to start web browser
 
std::string RWebDisplayArgs::GetCustomExec() const
{
   if (GetBrowserKind() != kCustom)
      return "";
 
#ifdef R__MACOSX
   if ((fExec == "safari") || (fExec == "Safari"))
      return "open -a Safari";
#endif
 
   return fExec;
}
 
///////////////////////////////////////////////////////////////////////////////////////////
/// returns string which can be used as argument in RWebWindow::Show() method
/// to display web window in provided QWidget
/// After RWebWindow is displayed created QWebEngineView can be found with the command:
///     auto view = qparent->findChild<QWebEngineView*>("RootWebView");
 
std::string RWebDisplayArgs::GetQt5EmbedQualifier(const void *qparent, const std::string &urlopt)
{
   std::string where = "qt5";
   if (qparent) {
      where.append(":");
      where.append(std::to_string((unsigned long) qparent));
   }
   if (!urlopt.empty()) {
      where.append("?");
      where.append(urlopt);
   }
   return where;
}