//------------------------------------------------------------------------------
// gui label control class												                  --
// (C) Piero Giubilato, Devis Contarato 2008, Berkeley Lab					      --
//------------------------------------------------------------------------------

//______________________________________________________________________________
// {Trace}
// [File name] "gui_Label.cpp"
// [Author] "Devis Contarato, Piero Giubilato"
// [Version] "1.1"
// [Modified by] "Devis Contarato"
// [Last revision] "13 Jul 2009"
// [Language] "C++"
// [Compiler] "Visual C++ 8.x 9.x"
// [Member of] "Cool SEAL"
// [Project] "SEAL"
// [Description] "Source for the gui_Label class"
// [Key documentation]
// "Visual C++ Reference Help"
// "Root reference guide"
// {Trace}
//______________________________________________________________________________

// Standard component

// Root Component
#include <TSystem.h>

// Application component
#include "global.h"
#include "gui_Label.h"


// CINT Preprocessor class import definition
ClassImp(gui_Label)

//______________________________________________________________________________
gui_Label::gui_Label(TGString entry, UInt_t left, UInt_t top): gui_Object(0)
{
	// Default constructor. gui_Label provides an interface layer that
	// integrates a root TGLabel plus all the code necesary to implement
	// events management.
	//
	// 'entry' is the label text
	// 'left', 'top' set the position of the widget
	// gui_Label is a static widget, therefore no callback function is
	// provided

	// Debug
	dbg_Print("gui_Label::gui_Label:(default)", DBG_LVL_ZERO);

	// Sets up the widget
	Init(entry, left, top);
}

//______________________________________________________________________________
gui_Label::gui_Label(gui_Object* parent, TGString entry, UInt_t left, UInt_t top): gui_Object(parent)
{
	// Default constructor. gui_Label provides an interface layer that
	dbg_Print("gui_Label::gui_Label:(gui_Object*)", DBG_LVL_ZERO);

	// Sets up the widget
	Init(entry, left, top);
}

//______________________________________________________________________________
gui_Label::~gui_Label()
{
	// Default destructor.
	dbg_Print("gui_Label::~gui_Label:()", DBG_LVL_ZERO);
	
	// Removes the root object from the root graphical server
	Parent()->Window()->RemoveFrame(label);
	label->DestroyWindow();
	
	// Deletes the root object
	delete label;
}

//______________________________________________________________________________
void gui_Label::Init(TGString entry, UInt_t left, UInt_t top)
{
   // Creates a layer over a root text control
	dbg_Print("gui_Label::Init:(default)", DBG_LVL_ZERO);
	
   // Initializes the root widget
   label = new TGLabel(Parent()->Window(), entry);
	
   // Renders the widget into the frame and adds it to the window 
   Parent()->Window()->AddFrame(label, new TGLayoutHints(kLHintsNormal, 0, 0, 0, 0));
   MoveResize(left, top, 0, 0);

	// Store the text
   obj_Text.Form(entry);

	// Set as transparent by default
	Transparent(true);
}

//______________________________________________________________________________
const TGLabel* gui_Label::Root()
{
	// Returns the pointer to the embedded root object
   return label;
}

//______________________________________________________________________________
void gui_Label::ReDraw()
{
	// Overloaded gui_Object member
	dbg_Print("gui_Label::ReDraw:()", DBG_LVL_FLOW);

	// Redraw the label only if it is transparnt
	if (obj_Transparent) color_Set(obj_foreColor, Parent()->backColor());
}

//______________________________________________________________________________
void gui_Label::MoveResize(UInt_t left, UInt_t top, UInt_t width, UInt_t height)
{
	// Overloaded gui_Object member
	dbg_Print("gui_Label::moveResize:(default)", DBG_LVL_FLOW);

   // Moves and resizes the widget
   label->MoveResize(left, top);
	
   // Stores the new datas
   obj_Left = left;
   obj_Top = top;
	
   // Paint
   Update();
}

//______________________________________________________________________________
void gui_Label::color_Set(UInt_t foreColor, UInt_t backColor)
{
	// Sets the label colors (foreColor == textColor)
	dbg_Print("gui_Label::color_Set", DBG_LVL_FLOW);

   // Check for transparency
	if (obj_Transparent)	backColor = Parent()->Window()->GetBackground(); 

	// Set the label colors
	label->SetForegroundColor(foreColor);
	label->SetBackgroundColor(backColor);
	
	// Stores the new datas
	obj_foreColor = foreColor;
	obj_backColor = backColor;

	// Refresh the graphical container
	Update();
}

//______________________________________________________________________________
void gui_Label::Transparent(bool transp)
{
	// Sets the label colors (foreColor == textColor)
	dbg_Print("gui_Label::transparent:(bool)", DBG_LVL_FLOW);

	// Stores the new datas
	obj_Transparent = transp;

	// Updates colors
	color_Set(obj_foreColor, obj_backColor);
}

//______________________________________________________________________________
bool gui_Label::Transparent() const
{
	// Returns the font size
	return obj_Transparent;
}

//______________________________________________________________________________
void gui_Label::Text(const char* text)
{
   // Sets the label colors (foreColor == textColor)
	dbg_Print("gui_Label::text:(char*)", DBG_LVL_FLOW);

	// Assign the new twxt to the label
	label->ChangeText(text); 
	label->Layout();

	// Stores the new data
   obj_Text.Form(text);
}

//______________________________________________________________________________
const TString gui_Label::Text() const
{
   // Returns the button text
   return obj_Text;
}

//______________________________________________________________________________
void gui_Label::fontBold(bool bold)
{
   // Sets the boldness of the button text (true = bold)
	dbg_Print("gui_Label::fontBold:(char*)", DBG_LVL_FLOW);

	// Stores the new data
   obj_fontBold = bold;

	// Uses the fontsize func 
	fontSize(obj_fontSize);
}

//______________________________________________________________________________
bool gui_Label::fontBold() const
{
	// Returns the font size
	return obj_fontBold;
}

//______________________________________________________________________________
void gui_Label::fontSize(UInt_t size)
{
   // Sets the size (and the weight) of the text
	dbg_Print("gui_Label::fontSize:(UInt)", DBG_LVL_FLOW);
	
	// Stores the new data
	obj_fontSize = (int)size;

	// Retrieves the font structure
	TGFontPool* pool = gClient->GetFontPool();
	Int_t kFontWeight = (obj_fontBold == true) ? kFontWeightBold : kFontWeightNormal;
	TGFont* font = pool->GetFont("helvetica", -obj_fontSize, kFontWeight, kFontSlantRoman);
	FontStruct_t ft = font->GetFontStruct();
	
	// Set the font
	label->SetTextFont(ft, kFALSE);
	
	// Fit the label and update
	MoveResize(obj_Left, obj_Top, 0, 0);
}

//______________________________________________________________________________
UInt_t gui_Label::fontSize() const
{
	// Returns the font size
	return obj_fontSize;
}

//______________________________________________________________________________
const TGString* gui_Label::lbl_Val() const
{
	// Returns the current text entry
	return label->GetText(); 
}