49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
/* This file is part of Clementine.
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Copyright 2012, David Sansome <me@davidsansome.com>
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Clementine 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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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "signalchecker.h"
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#include "core/logging.h"
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bool CheckedGConnect(
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gpointer source,
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const char* signal,
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GCallback callback,
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gpointer data,
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const int callback_param_count) {
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guint signal_id = g_signal_lookup(signal, G_OBJECT_TYPE(source));
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if (signal_id == 0) {
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qLog(Error) << "Connecting to invalid signal:" << signal;
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Q_ASSERT(0);
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return false;
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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:
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// return_type callback(gpointer data1, params..., gpointer data2);
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int signal_params = query.n_params + 2;
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if (signal_params != callback_param_count) {
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qLog(Error) << "Connecting callback to signal with different parameters counts";
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Q_ASSERT(0);
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return false;
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}
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g_signal_connect(source, signal, G_CALLBACK(callback), data);
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return true;
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}
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