// @(#)root/gpad:$Id$
// Author: Nenad Buncic   20/02/96

/*************************************************************************
 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/

/////////////////////////////////////////////////////////////////////////
//                                                                     //
//   ControlBar is a fully user configurable tool which provides fast  //
// access to frequently used operations. The user can choose between   //
// buttons and drawnbuttons (let's say icons) and assign to them their //
// own actions (let's say ROOT or C++ commands).                       //
//
// The macro belows shows an example of controlbar.
// To execute an item, click with the left mouse button.
// To see the HELP of a button, click on the right mouse button.
// 
// You have access to the last clicked button via the method
// GetClicked(). For example, bar->GetClicked()->GetName() 
// will return the name of the last clicked button. 
// 
//
//{
//   gROOT.Reset("a");
//   TControlBar bar("vertical");
//   bar.AddButton("Help to run demos",".x demoshelp.C",
//                 "Explains how to run the demos");
//   bar.AddButton("framework",        ".x framework.C",
//                 "An Example of Object Oriented User Interface");
//   bar.AddButton("hsimple",          ".x hsimple.C",
//                 "An Example Creating Histograms/Ntuples on File");
//   bar.AddButton("hsum",             ".x hsum.C",
//                 "Filling histograms and some graphics options");
//   bar.AddButton("canvas",           ".x canvas.C",
//                 "Canvas and Pad Management");
//   bar.AddButton("formula1",         ".x formula1.C",
//                 "Simple Formula and Functions");
//   bar.AddButton("fillrandom",       ".x fillrandom.C",
//                 "Histograms with Random Numbers from a Function");
//   bar.AddButton("fit1",             ".x fit1.C",
//                 "A Simple Fitting Example");
//   bar.AddButton("h1draw",           ".x h1draw.C",
//                 "Drawing Options for 1D Histograms");
//   bar.AddButton("graph",            ".x graph.C",
//                 "Examples of a simple graph");
//   bar.AddButton("tornado",          ".x tornado.C",
//                 "Examples of 3-D PolyMarkers");
//   bar.AddButton("shapes",           ".x shapes.C",
//                 "The Geometry Shapes");
//   bar.AddButton("atlasna49",        ".x atlasna49.C",
//                 "Creating and Viewing Geometries");
//   bar.AddButton("file_layout",      ".x file.C",
//                 "The ROOT file format");
//   bar.AddButton("tree_layout",      ".x tree.C",
//                 "The Tree Data Structure");
//   bar.AddButton("ntuple1",          ".x ntuple1.C",
//                 "Ntuples and Selections");
//   bar.AddButton("run benchmarks",   ".x benchmarks.C",
//                 "Runs all the ROOT benchmarks");
//   bar.AddButton("rootmarks",        ".x rootmarks.C",
//                 "Prints an estimated ROOTMARKS for your machine");
//   bar.AddButton("edit_hsimple",     ".!ved hsimple.C &",
//                 "Invokes the text editor on file hsimple.C");
//   bar.AddButton("Close Bar",        "gROOT.Reset(\"a\")",
//                 "Close ControlBar");
//   bar.Show();
//   gROOT.SaveContext();
//}
//
//Begin_Html
/*
<img src="gif/controlbar.gif">
*/
//End_Html
//
//                                                                     //
/////////////////////////////////////////////////////////////////////////

#include "TApplication.h"
#include "TControlBar.h"
#include "TGuiFactory.h"
#include "TList.h"
#include "TStyle.h"


ClassImp(TControlBar)


//_______________________________________________________________________
TControlBar::TControlBar() : TControlBarButton()
{
   // Default constructor.

   fControlBarImp = 0;
   fOrientation   = 0;
   fButtons       = 0;
   fNoroc         = 1;
}


//_______________________________________________________________________
TControlBar::TControlBar(const char *orientation, const char *title)
            : TControlBarButton(title, "", "", "button")

{
   // Normal constructor.

   SetOrientation( orientation );
   Initialize(-999, -999);
}


//_______________________________________________________________________
TControlBar::TControlBar(const char *orientation, const char *title, Int_t x, Int_t y)
            : TControlBarButton(title, "", "", "button")

{
   // Normal constructor.

   Int_t xs = (Int_t)(x*gStyle->GetScreenFactor());
   Int_t ys = (Int_t)(y*gStyle->GetScreenFactor());
   SetOrientation( orientation );
   Initialize(xs, ys);
}


//_______________________________________________________________________
TControlBar::~TControlBar()
{
   // Destructor.

   delete fControlBarImp;

   if( fButtons )
      fButtons->Delete();

   fButtons       = 0;
   fControlBarImp = 0;
}


//_______________________________________________________________________
void TControlBar::AddButton(TControlBarButton &button)
{
   // Add button.

   AddButton( &button );
}


//_______________________________________________________________________
void TControlBar::AddButton(TControlBarButton *button)
{
   // Add button.

   if( fButtons && button )
      fButtons->Add( button );
}


//_______________________________________________________________________
void TControlBar::AddButton(const char *label, const char *action, const char *hint, const char *type)
{
   // Add button.

   TControlBarButton *button = new TControlBarButton( label, action, hint, type );
   AddButton( button );
}


//_______________________________________________________________________
void TControlBar::AddControlBar(TControlBar &controlBar)
{
   // Add controlbar.

   AddControlBar( &controlBar );
}


//_______________________________________________________________________
void TControlBar::AddControlBar(TControlBar *controlBar)
{
   // Add controlbar.

   if( fButtons && controlBar )
      fButtons->Add( controlBar );
}


//_______________________________________________________________________
void TControlBar::AddSeparator()
{
   // Add separator.
}


//_______________________________________________________________________
void TControlBar::Create()
{
   // Create controlbar.
  
   if( fControlBarImp ) {
      fControlBarImp->Create();
   }
}


//_______________________________________________________________________
void TControlBar::Hide()
{
   // Hide controlbar.

   if( fControlBarImp ) {
      fControlBarImp->Hide();
   }
}


//_______________________________________________________________________
void TControlBar::Initialize(Int_t x, Int_t y)
{
   // Initialize controlbar.

   // Load and initialize graphics libraries if
   // TApplication::NeedGraphicsLibs() has been called by a
   // library static initializer.
   if (gApplication)
      gApplication->InitializeGraphics();

   if (x == -999) {
      fControlBarImp = gGuiFactory->CreateControlBarImp( this, GetName() );
   } else {
      fControlBarImp = gGuiFactory->CreateControlBarImp( this, GetName(), x, y );
   }
  
   fButtons       = new TList();
   fNoroc         = 1;
}


//_______________________________________________________________________
void TControlBar::SetFont(const char *fontName)
{
   // Sets new font for control bar buttons, e.g.:
   // root > .x tutorials/demos.C
   // root > bar->SetFont("-adobe-helvetica-bold-r-*-*-24-*-*-*-*-*-iso8859-1")

   fControlBarImp->SetFont(fontName);
}


//_______________________________________________________________________
void TControlBar::SetTextColor(const char *colorName)
{
   // Sets text color for control bar buttons, e.g.:
   // root > .x tutorials/demos.C
   // root > bar->SetTextColor("red")

   fControlBarImp->SetTextColor(colorName);
}


//_______________________________________________________________________
void TControlBar::SetButtonState(const char *label, Int_t state)
{
   // Sets a state for control bar button 'label'; possible states are
   // 0-kButtonUp, 1-kButtonDown, 2-kButtonEngaged, 3-kButtonDisabled,
   // e.g.:
   // root > .x tutorials/demos.C
   // to disable the button 'first' do:
   // root > bar->SetButtonState("first", 3)
   // to enable the button 'first' do:
   // root > bar->SetButtonState("first", 0)

   if (state > 3) {
      Error("SetButtonState", "not valid button state (expecting 0, 1, 2 or 3)");
      return;
   }
   fControlBarImp->SetButtonState(label, state);
}


 //_______________________________________________________________________
void TControlBar::SetButtonWidth(UInt_t width)
{
   // Sets the width in pixels for control bar button.

   fControlBarImp->SetButtonWidth(width);
}


//_______________________________________________________________________
void TControlBar::SetOrientation(const char *o)
{
   // Set controlbar orientation.

   fOrientation = kVertical;

   if( *o ) {
      if( !strcasecmp( o, "vertical" ) )
         fOrientation = kVertical;
      else if( !strcasecmp( o, "horizontal" ) )
         fOrientation = kHorizontal;
      else
         Error( "SetOrientation", "Unknown orientation: '%s' !\n\t\t(choice of: %s, %s)",
                 o, "vertical", "horizontal" );
   }
}


//_______________________________________________________________________
void TControlBar::SetOrientation(Int_t o)
{
   // Set controlbar orientation.

   fOrientation = kVertical;

   if( ( o == kVertical ) || ( o == kHorizontal ) )
      fOrientation = o;
   else
      Error( "SetOrientation", "Unknown orientation: %d !\n\t\t(choice of: %d, %d)",
              o, kVertical, kHorizontal );
}



//_______________________________________________________________________
void TControlBar::Show()
{
   // Show controlbar.

   if( fControlBarImp )
      fControlBarImp->Show();
}


//_______________________________________________________________________
TControlBarButton *TControlBar::GetClicked() const
{
   // Returns a pointer to the last clicked controlbar button;    
   // null if no button was clicked yet
   
   if (!fControlBarImp->GetClicked()) 
      Printf("None of the controlbar buttons is clicked yet");
   return fControlBarImp->GetClicked();
}