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#include <FLTKPropertyNameButtonWithHelp.h>
#include <Fl/Fl.H>
#include <Fl/fl_ask.H>
#include <Fl/Fl_Menu_Button.H>
#include "../cmCacheManager.h"
namespace fltk {
Fl_Window * PropertyNameButtonWithHelp::helpBlob = 0;
Fl_Box * PropertyNameButtonWithHelp::helpText = 0;
unsigned int PropertyNameButtonWithHelp::counter = 0;
int PropertyNameButtonWithHelp::lastMousePositionX = 0;
int PropertyNameButtonWithHelp::lastMousePositionY = 0;
PropertyNameButtonWithHelp
::PropertyNameButtonWithHelp(int x,int y, int w, int h, const char * l):
Fl_Button(x,y,w,h,l)
{
counter++; // one more object instantiated
}
PropertyNameButtonWithHelp::
~PropertyNameButtonWithHelp( )
{
counter--;
if( counter == 0 )
{
delete helpBlob;
delete helpText;
}
}
void
PropertyNameButtonWithHelp
::SetHelpText( const char * text )
{
m_HelpText = text;
}
void
PropertyNameButtonWithHelp
::ShowHelp( void )
{
if( helpBlob )
{
helpBlob->show();
}
}
void
PropertyNameButtonWithHelp
::HideHelp( void )
{
if( helpBlob )
{
helpBlob->hide();
}
}
int
PropertyNameButtonWithHelp::
handle( int event )
{
static bool helpBlobVisible = false;
const float delayForShowingHelpBlob = 1.0; // seconds
const int maxWidth = 300;
const int lineHeight = 20;
// Create the help blob window if it doesn't exist
if( !helpBlob )
{
helpBlob = new Fl_Window(0,0,200,20,"");
helpBlob->border( 0 );
helpText = new Fl_Box(0,0,200,20,"");
helpBlob->end();
Fl_Color yellowHelp = FL_YELLOW;
helpBlob->color( yellowHelp );
helpText->color( yellowHelp );
helpText->align( FL_ALIGN_CENTER | FL_ALIGN_INSIDE | FL_ALIGN_WRAP );
}
int eventManaged = 0;
switch( event )
{
case FL_ENTER:
{
lastMousePositionX = Fl::event_x();
lastMousePositionY = Fl::event_y();
const float factor = helpText->labelsize() * 0.5;
int height = lineHeight;
int area = (int)( m_HelpText.size() * factor );
int width = area;
if( width > maxWidth )
{
width = maxWidth;
height = area / maxWidth * lineHeight;
if( area % maxWidth != 0 )
{
height += lineHeight;
}
}
helpText->size( width, height );
helpBlob->size( width, height );
helpText->label( m_HelpText.c_str() );
Fl_Widget * parent = this->parent();
Fl::add_timeout( delayForShowingHelpBlob, ShowHelpBlobCallback, (void *)parent );
helpBlobVisible = true;
eventManaged = 0;
break;
}
case FL_LEAVE:
{
if( helpBlobVisible )
{
helpBlobVisible = false;
helpBlob->hide();
}
eventManaged = 0;
break;
}
case FL_MOVE:
if( helpBlobVisible )
{
helpBlobVisible = false;
helpBlob->hide();
}
eventManaged = 0;
break;
case FL_PUSH:
if( Fl::event_button() == FL_RIGHT_MOUSE )
{
PopupMenu();
}
eventManaged = 0;
break;
default:
eventManaged = 0;
}
return eventManaged;
}
void
PropertyNameButtonWithHelp::
ShowHelpBlobCallback( void * data )
{
Fl_Widget * thisWidget = Fl::belowmouse();
Fl_Widget * eventWidget = (Fl_Widget *)data;
if( thisWidget == eventWidget )
{
helpBlob->position( lastMousePositionX, lastMousePositionY );
helpBlob->show();
}
}
////////////////////////////////////////////////////////////////
// This popup menu is displayed when the
// right mouse button is pressed
void
PropertyNameButtonWithHelp::
PopupMenu(void)
{
static Fl_Menu_Button * popupMenu = 0;
if( !popupMenu )
{
popupMenu = new Fl_Menu_Button(0,0,100,200);
}
popupMenu->type( Fl_Menu_Button::POPUP3 );
popupMenu->add("Remove|Properties...");
popupMenu->popup();
switch( popupMenu->value() )
{
case 0: // Remove
{
const char * propertyName = label();
int answer = fl_ask( "Do you want to remove property %s", propertyName );
if( answer == 1 )
{
// Remove the entry from the cache
cmCacheManager::GetInstance()->RemoveCacheEntry( propertyName );
// Get the parent: Fl_Tile that manages the whole row in the GUI
Fl_Group * parentGroup = (Fl_Group *) parent();
// Get the grandParent: Fl_Pack with the property list
Fl_Group * grandParentGroup = (Fl_Group *) parentGroup->parent();
// Remove the row from the list
grandParentGroup->remove( *parentGroup );
// Destroy the row
delete parentGroup; // Patricide... ?
// Redraw the list
grandParentGroup->redraw();
return;
}
break;
}
case 1: // Properties
break;
}
}
} // end namespace fltk
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