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selection: rename SpVisualizerSelection to SpSelection
We want this in sysprof.h (without UI components) so that we can use it to filter things in profilers. Therefore, we don't need to make it namespaced to "visualizers" since a time range selection is a fairly straightforward, and non-UI confined implementation.
This commit is contained in:
Christian Hergert
251
lib/sp-selection.c
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251
lib/sp-selection.c
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/* sp-selection.c
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*
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* Copyright (C) 2016 Christian Hergert <chergert@redhat.com>
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*
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* This program 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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* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define G_LOG_DOMAIN "sp-selection"
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#include "sp-selection.h"
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struct _SpSelection
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{
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GObject parent_instance;
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GArray *ranges;
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};
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typedef struct
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{
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gint64 begin;
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gint64 end;
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} Range;
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G_DEFINE_TYPE (SpSelection, sp_selection, G_TYPE_OBJECT)
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enum {
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PROP_0,
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PROP_HAS_SELECTION,
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N_PROPS
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};
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enum {
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CHANGED,
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N_SIGNALS
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};
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static GParamSpec *properties [N_PROPS];
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static guint signals [N_SIGNALS];
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static inline void
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int64_swap (gint64 *a,
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gint64 *b)
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{
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if (*a > *b)
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{
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gint64 tmp = *a;
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*a = *b;
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*b = tmp;
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}
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}
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static void
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sp_selection_finalize (GObject *object)
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{
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SpSelection *self = (SpSelection *)object;
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g_clear_pointer (&self->ranges, g_array_unref);
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G_OBJECT_CLASS (sp_selection_parent_class)->finalize (object);
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}
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static void
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sp_selection_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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SpSelection *self = SP_SELECTION (object);
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switch (prop_id)
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{
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case PROP_HAS_SELECTION:
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g_value_set_boolean (value, sp_selection_get_has_selection (self));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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sp_selection_class_init (SpSelectionClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = sp_selection_finalize;
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object_class->get_property = sp_selection_get_property;
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properties [PROP_HAS_SELECTION] =
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g_param_spec_boolean ("has-selection",
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"Has Selection",
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"Has Selection",
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FALSE,
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(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_properties (object_class, N_PROPS, properties);
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/**
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* SpSelection::changed:
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*
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* This signal is emitted when the selection has changed.
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*/
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signals [CHANGED] =
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g_signal_new ("changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0, NULL, NULL, NULL, G_TYPE_NONE, 0);
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}
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static void
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sp_selection_init (SpSelection *self)
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{
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self->ranges = g_array_new (FALSE, FALSE, sizeof (Range));
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}
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gboolean
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sp_selection_get_has_selection (SpSelection *self)
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{
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g_return_val_if_fail (SP_IS_SELECTION (self), FALSE);
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return self->ranges->len > 0;
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}
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/**
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* sp_selection_foreach:
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* @self: A #SpSelection
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* @foreach_func: (scope call): a callback for each range
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* @user_data: user data for @foreach_func
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*
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* Calls @foreach_func for every selected range.
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*/
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void
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sp_selection_foreach (SpSelection *self,
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SpSelectionForeachFunc foreach_func,
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gpointer user_data)
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{
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g_return_if_fail (SP_IS_SELECTION (self));
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g_return_if_fail (foreach_func != NULL);
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for (guint i = 0; i < self->ranges->len; i++)
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{
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const Range *range = &g_array_index (self->ranges, Range, i);
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foreach_func (self, range->begin, range->end, user_data);
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}
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}
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void
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sp_selection_select_range (SpSelection *self,
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gint64 begin_time,
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gint64 end_time)
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{
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Range range = { 0 };
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g_return_if_fail (SP_IS_SELECTION (self));
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int64_swap (&begin_time, &end_time);
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range.begin = begin_time;
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range.end = end_time;
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g_array_append_val (self->ranges, range);
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if (self->ranges->len == 1)
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g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_HAS_SELECTION]);
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g_signal_emit (self, signals [CHANGED], 0);
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}
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void
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sp_selection_unselect_range (SpSelection *self,
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gint64 begin,
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gint64 end)
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{
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g_return_if_fail (SP_IS_SELECTION (self));
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int64_swap (&begin, &end);
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for (guint i = 0; i < self->ranges->len; i++)
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{
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const Range *range = &g_array_index (self->ranges, Range, i);
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if (range->begin == begin && range->end == end)
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{
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g_array_remove_index (self->ranges, i);
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if (self->ranges->len == 0)
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g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_HAS_SELECTION]);
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g_signal_emit (self, signals [CHANGED], 0);
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break;
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}
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}
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}
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void
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sp_selection_unselect_all (SpSelection *self)
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{
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g_return_if_fail (SP_IS_SELECTION (self));
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if (self->ranges->len > 0)
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{
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g_array_remove_range (self->ranges, 0, self->ranges->len);
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g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_HAS_SELECTION]);
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g_signal_emit (self, signals [CHANGED], 0);
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}
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}
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gboolean
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sp_selection_contains (SpSelection *self,
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gint64 time_at)
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{
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if (self == NULL || self->ranges->len == 0)
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return TRUE;
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for (guint i = 0; i < self->ranges->len; i++)
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{
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const Range *range = &g_array_index (self->ranges, Range, i);
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if (time_at >= range->begin && time_at <= range->end)
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return TRUE;
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}
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return FALSE;
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}
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SpSelection *
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sp_selection_copy (const SpSelection *self)
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{
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SpSelection *copy;
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if (self == NULL)
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return NULL;
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copy = g_object_new (SP_TYPE_SELECTION, NULL);
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for (guint i = 0; i < self->ranges->len; i++)
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{
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Range range = g_array_index (self->ranges, Range, i);
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g_array_append_val (copy->ranges, range);
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}
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return copy;
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}
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