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101 lines
2.8 KiB
101 lines
2.8 KiB
12 years ago
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/*
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* this file was largely taken from the oxygen gtk engine
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* Copyright (c) 2010 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
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* Copyright (c) 2010 Ruslan Kabatsayev <b7.10110111@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or( at your option ) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "tdegtk-hooks.h"
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#include "../config.h"
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#include <cassert>
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#include <iostream>
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#if TDEGTK_DEBUG
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static int counter( 0 );
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#endif
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//__________________________________________________________________
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bool Hook::connect( const std::string& signal, GType typeId, GSignalEmissionHook hookFunction, gpointer data )
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{
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// make sure that signal is not already connected
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assert( _signalId == 0 && _hookId == 0 );
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// check type id
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if( !g_type_class_peek( typeId ) )
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{
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#if TDEGTK_DEBUG
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std::cerr << "Oxygen::Hook::connect - typeId " << g_type_name(typeId) << " not yet installed" << std::endl;
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#endif
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g_type_class_ref( typeId );
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}
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// store signal id
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_signalId = g_signal_lookup( signal.c_str(), typeId );
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if( !_signalId )
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{
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#if TDEGTK_DEBUG
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std::cerr << "Oxygen::Hook::connect - signal " << signal << " not installed." << std::endl;
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#endif
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return false;
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}
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// store attributes and create connection
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_hookId = g_signal_add_emission_hook(
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_signalId,
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(GQuark)0L,
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hookFunction,
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data, 0L);
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#if TDEGTK_DEBUG
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++counter;
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std::cerr << "Oxygen::Hook::connect - hook: " << _hookId << " counter: " << counter << std::endl;
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#endif
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return true;
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}
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//____________________________________________________________________
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void Hook::disconnect( void )
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{
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// disconnect signal
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if( _signalId > 0 && _hookId > 0 )
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{
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#if TDEGTK_DEBUG
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--counter;
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std::cerr << "Oxygen::Hook::disconnect - hook: " << _hookId << " counter: " << counter << std::endl;
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#endif
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g_signal_remove_emission_hook( _signalId, _hookId );
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}
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_signalId = 0;
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_hookId = 0;
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}
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