53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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* Copyright 2012, 2014, John Maguire <john.maguire@gmail.com>
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* Copyright 2014, Krzysztof Sobiecki <sobkas@gmail.com>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include <glib-object.h>
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#include <QtGlobal>
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#include "signalchecker.h"
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gulong CheckedGConnect(gpointer source, const char *signal, GCallback callback, gpointer data, const int callback_param_count) {
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guint signal_id = 0;
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GQuark detail = 0;
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if (!g_signal_parse_name(signal, G_OBJECT_TYPE(source), &signal_id, &detail, false)) {
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qFatal("Connecting to invalid signal: %s", signal);
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return 0;
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}
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GSignalQuery query;
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g_signal_query(signal_id, &query);
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// The signature for a signal callback is always: return_type callback(gpointer data1, params..., gpointer data2);
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int signal_params = static_cast<int>(query.n_params) + 2;
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if (signal_params != callback_param_count) {
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qFatal("Connecting callback to signal with different parameters counts");
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return 0;
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}
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return g_signal_connect(source, signal, G_CALLBACK(callback), data);
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}
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