4da18923c5
So far this fact is hidden from the implementation. The usefulness of this change will soon become apparent.
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/* gdkeventsequence.h - tracking sequences of events
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* Copyright (C) 2012 Red Hat, Inc.
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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
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "gdkeventsequenceprivate.h"
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#include "gdkdeviceprivate.h"
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/* XXX: Does not return a reference - should we change that? */
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GdkEventSequence *
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gdk_event_sequence_new (GdkDevice *device,
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guint sequence_id)
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{
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GdkEventSequence *sequence = g_slice_new0 (GdkEventSequence);
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/* device owns sequence, so cannot ref device here */
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sequence->ref_count = 1;
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sequence->device = device;
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sequence->sequence_id = sequence_id;
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sequence->axes = g_new0 (gdouble, gdk_device_get_n_axes (device));
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device->sequences = g_slist_prepend (device->sequences, sequence);
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return sequence;
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}
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GdkEventSequence *
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gdk_event_sequence_lookup (GdkDevice *device,
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guint sequence_id)
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{
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GSList *list;
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for (list = device->sequences; list; list = list->next)
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{
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GdkEventSequence *sequence = list->data;
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if (sequence->sequence_id == sequence_id)
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return sequence;
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}
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return NULL;
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}
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GdkEventSequence *
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gdk_event_sequence_ref (GdkEventSequence *sequence)
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{
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sequence->ref_count++;
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return sequence;
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}
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void
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gdk_event_sequence_unref (GdkEventSequence *sequence)
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{
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sequence->ref_count--;
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if (sequence->ref_count > 0)
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return;
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if (sequence->device)
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{
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GdkDevice *device = sequence->device;
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device->sequences = g_slist_remove (device->sequences, sequence);
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}
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g_free (sequence->axes);
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g_slice_free (GdkEventSequence, sequence);
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}
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