mirror of
https://github.com/varun-r-mallya/sysprof.git
synced 2025-12-31 20:36:25 +00:00
63579451b5
This uses an alternate idea for setting the structure alignments. Lets see if this silents the ARM builder cast alignment issues. GSlice (which is what is used for GObjects) guarantees a 2-pointer size allocation, which means we can be ensured that the alignment is at least 8 bytes.
475 lines
12 KiB
C
475 lines
12 KiB
C
/* sp-zoom-manager.c
|
|
*
|
|
* Copyright (C) 2016 Christian Hergert <chergert@redhat.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#define G_LOG_DOMAIN "sp-zoom-manager"
|
|
|
|
#include <glib/gi18n.h>
|
|
#include <gio/gio.h>
|
|
|
|
#include "sp-zoom-manager.h"
|
|
|
|
struct _SpZoomManager
|
|
{
|
|
GObject parent_instance;
|
|
|
|
GSimpleActionGroup *actions;
|
|
|
|
gdouble min_zoom;
|
|
gdouble max_zoom;
|
|
gdouble zoom;
|
|
};
|
|
|
|
enum {
|
|
PROP_0,
|
|
PROP_CAN_ZOOM_IN,
|
|
PROP_CAN_ZOOM_OUT,
|
|
PROP_MIN_ZOOM,
|
|
PROP_MAX_ZOOM,
|
|
PROP_ZOOM,
|
|
N_PROPS
|
|
};
|
|
|
|
static void action_group_iface_init (GActionGroupInterface *iface);
|
|
|
|
G_DEFINE_TYPE_EXTENDED (SpZoomManager, sp_zoom_manager, G_TYPE_OBJECT, 0,
|
|
G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, action_group_iface_init))
|
|
|
|
static GParamSpec *properties [N_PROPS];
|
|
static gdouble zoom_levels[] = {
|
|
0.3,
|
|
0.5,
|
|
0.67,
|
|
0.80,
|
|
0.90,
|
|
1.0,
|
|
1.1,
|
|
1.2,
|
|
1.33,
|
|
1.5,
|
|
1.7,
|
|
2.0,
|
|
2.4,
|
|
3.0,
|
|
5.0,
|
|
10.0,
|
|
20.0,
|
|
30.0,
|
|
50.0,
|
|
};
|
|
|
|
static void
|
|
sp_zoom_manager_zoom_in_action (GSimpleAction *action,
|
|
GVariant *param,
|
|
gpointer user_data)
|
|
{
|
|
SpZoomManager *self = user_data;
|
|
g_assert (SP_IS_ZOOM_MANAGER (self));
|
|
sp_zoom_manager_zoom_in (self);
|
|
}
|
|
|
|
static void
|
|
sp_zoom_manager_zoom_out_action (GSimpleAction *action,
|
|
GVariant *param,
|
|
gpointer user_data)
|
|
{
|
|
SpZoomManager *self = user_data;
|
|
g_assert (SP_IS_ZOOM_MANAGER (self));
|
|
sp_zoom_manager_zoom_out (self);
|
|
}
|
|
|
|
static void
|
|
sp_zoom_manager_zoom_one_action (GSimpleAction *action,
|
|
GVariant *param,
|
|
gpointer user_data)
|
|
{
|
|
SpZoomManager *self = user_data;
|
|
g_assert (SP_IS_ZOOM_MANAGER (self));
|
|
sp_zoom_manager_reset (self);
|
|
}
|
|
|
|
static void
|
|
sp_zoom_manager_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
SpZoomManager *self = SP_ZOOM_MANAGER (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_MIN_ZOOM:
|
|
g_value_set_double (value, sp_zoom_manager_get_min_zoom (self));
|
|
break;
|
|
|
|
case PROP_MAX_ZOOM:
|
|
g_value_set_double (value, sp_zoom_manager_get_max_zoom (self));
|
|
break;
|
|
|
|
case PROP_ZOOM:
|
|
g_value_set_double (value, sp_zoom_manager_get_zoom (self));
|
|
break;
|
|
|
|
case PROP_CAN_ZOOM_IN:
|
|
g_value_set_boolean (value, sp_zoom_manager_get_can_zoom_in (self));
|
|
break;
|
|
|
|
case PROP_CAN_ZOOM_OUT:
|
|
g_value_set_boolean (value, sp_zoom_manager_get_can_zoom_out (self));
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sp_zoom_manager_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
SpZoomManager *self = SP_ZOOM_MANAGER (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_MIN_ZOOM:
|
|
sp_zoom_manager_set_min_zoom (self, g_value_get_double (value));
|
|
break;
|
|
|
|
case PROP_MAX_ZOOM:
|
|
sp_zoom_manager_set_max_zoom (self, g_value_get_double (value));
|
|
break;
|
|
|
|
case PROP_ZOOM:
|
|
sp_zoom_manager_set_zoom (self, g_value_get_double (value));
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sp_zoom_manager_class_init (SpZoomManagerClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
|
|
object_class->get_property = sp_zoom_manager_get_property;
|
|
object_class->set_property = sp_zoom_manager_set_property;
|
|
|
|
properties [PROP_CAN_ZOOM_IN] =
|
|
g_param_spec_boolean ("can-zoom-in",
|
|
"Can Zoom In",
|
|
"Can Zoom In",
|
|
TRUE,
|
|
(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
properties [PROP_CAN_ZOOM_OUT] =
|
|
g_param_spec_boolean ("can-zoom-out",
|
|
"Can Zoom Out",
|
|
"Can Zoom Out",
|
|
TRUE,
|
|
(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
properties [PROP_MIN_ZOOM] =
|
|
g_param_spec_double ("min-zoom",
|
|
"Min Zoom",
|
|
"The minimum zoom to apply",
|
|
-G_MAXDOUBLE,
|
|
G_MAXDOUBLE,
|
|
0.0,
|
|
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
properties [PROP_MAX_ZOOM] =
|
|
g_param_spec_double ("max-zoom",
|
|
"Max Zoom",
|
|
"The maximum zoom to apply",
|
|
-G_MAXDOUBLE,
|
|
G_MAXDOUBLE,
|
|
0.0,
|
|
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
properties [PROP_ZOOM] =
|
|
g_param_spec_double ("zoom",
|
|
"Zoom",
|
|
"The current zoom level",
|
|
-G_MAXDOUBLE,
|
|
G_MAXDOUBLE,
|
|
1.0,
|
|
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_properties (object_class, N_PROPS, properties);
|
|
}
|
|
|
|
static void
|
|
sp_zoom_manager_init (SpZoomManager *self)
|
|
{
|
|
static const GActionEntry entries[] = {
|
|
{ "zoom-in", sp_zoom_manager_zoom_in_action },
|
|
{ "zoom-out", sp_zoom_manager_zoom_out_action },
|
|
{ "zoom-one", sp_zoom_manager_zoom_one_action },
|
|
};
|
|
GAction *action;
|
|
|
|
self->min_zoom = 0.0;
|
|
self->max_zoom = 0.0;
|
|
self->zoom = 1.0;
|
|
|
|
self->actions = g_simple_action_group_new ();
|
|
g_action_map_add_action_entries (G_ACTION_MAP (self->actions),
|
|
entries,
|
|
G_N_ELEMENTS (entries),
|
|
self);
|
|
|
|
action = g_action_map_lookup_action (G_ACTION_MAP (self->actions), "zoom-in");
|
|
g_object_bind_property (self, "can-zoom-in", action, "enabled", G_BINDING_SYNC_CREATE);
|
|
|
|
action = g_action_map_lookup_action (G_ACTION_MAP (self->actions), "zoom-out");
|
|
g_object_bind_property (self, "can-zoom-out", action, "enabled", G_BINDING_SYNC_CREATE);
|
|
}
|
|
|
|
SpZoomManager *
|
|
sp_zoom_manager_new (void)
|
|
{
|
|
return g_object_new (SP_TYPE_ZOOM_MANAGER, NULL);
|
|
}
|
|
|
|
gboolean
|
|
sp_zoom_manager_get_can_zoom_in (SpZoomManager *self)
|
|
{
|
|
g_return_val_if_fail (SP_IS_ZOOM_MANAGER (self), FALSE);
|
|
|
|
return self->max_zoom == 0.0 || self->zoom < self->max_zoom;
|
|
}
|
|
|
|
gboolean
|
|
sp_zoom_manager_get_can_zoom_out (SpZoomManager *self)
|
|
{
|
|
g_return_val_if_fail (SP_IS_ZOOM_MANAGER (self), FALSE);
|
|
|
|
return self->min_zoom == 0.0 || self->zoom > self->min_zoom;
|
|
}
|
|
|
|
gboolean
|
|
sp_zoom_manager_get_min_zoom (SpZoomManager *self)
|
|
{
|
|
g_return_val_if_fail (SP_IS_ZOOM_MANAGER (self), FALSE);
|
|
|
|
return self->min_zoom;
|
|
}
|
|
|
|
gboolean
|
|
sp_zoom_manager_get_max_zoom (SpZoomManager *self)
|
|
{
|
|
g_return_val_if_fail (SP_IS_ZOOM_MANAGER (self), FALSE);
|
|
|
|
return self->max_zoom;
|
|
}
|
|
|
|
void
|
|
sp_zoom_manager_set_min_zoom (SpZoomManager *self,
|
|
gdouble min_zoom)
|
|
{
|
|
g_return_if_fail (SP_IS_ZOOM_MANAGER (self));
|
|
|
|
if (min_zoom != self->min_zoom)
|
|
{
|
|
self->min_zoom = min_zoom;
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_MIN_ZOOM]);
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CAN_ZOOM_OUT]);
|
|
}
|
|
}
|
|
|
|
void
|
|
sp_zoom_manager_set_max_zoom (SpZoomManager *self,
|
|
gdouble max_zoom)
|
|
{
|
|
g_return_if_fail (SP_IS_ZOOM_MANAGER (self));
|
|
|
|
if (max_zoom != self->max_zoom)
|
|
{
|
|
self->max_zoom = max_zoom;
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_MAX_ZOOM]);
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CAN_ZOOM_IN]);
|
|
}
|
|
}
|
|
|
|
void
|
|
sp_zoom_manager_zoom_in (SpZoomManager *self)
|
|
{
|
|
gdouble zoom;
|
|
|
|
g_return_if_fail (SP_IS_ZOOM_MANAGER (self));
|
|
|
|
if (!sp_zoom_manager_get_can_zoom_in (self))
|
|
return;
|
|
|
|
zoom = self->zoom;
|
|
|
|
for (guint i = 0; i < G_N_ELEMENTS (zoom_levels); i++)
|
|
{
|
|
if (zoom_levels[i] > zoom)
|
|
{
|
|
zoom = zoom_levels[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (zoom == self->zoom)
|
|
zoom *= 2;
|
|
|
|
sp_zoom_manager_set_zoom (self, zoom);
|
|
}
|
|
|
|
void
|
|
sp_zoom_manager_zoom_out (SpZoomManager *self)
|
|
{
|
|
gdouble zoom;
|
|
|
|
g_return_if_fail (SP_IS_ZOOM_MANAGER (self));
|
|
|
|
if (!sp_zoom_manager_get_can_zoom_out (self))
|
|
return;
|
|
|
|
zoom = self->zoom;
|
|
|
|
for (guint i = G_N_ELEMENTS (zoom_levels); i > 0; i--)
|
|
{
|
|
if (zoom_levels[i-1] < zoom)
|
|
{
|
|
zoom = zoom_levels[i-1];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (zoom == self->zoom)
|
|
zoom /= 2.0;
|
|
|
|
sp_zoom_manager_set_zoom (self, zoom);
|
|
}
|
|
|
|
void
|
|
sp_zoom_manager_reset (SpZoomManager *self)
|
|
{
|
|
g_return_if_fail (SP_IS_ZOOM_MANAGER (self));
|
|
|
|
sp_zoom_manager_set_zoom (self, 1.0);
|
|
}
|
|
|
|
gdouble
|
|
sp_zoom_manager_get_zoom (SpZoomManager *self)
|
|
{
|
|
g_return_val_if_fail (SP_IS_ZOOM_MANAGER (self), 0.0);
|
|
|
|
return self->zoom;
|
|
}
|
|
|
|
void
|
|
sp_zoom_manager_set_zoom (SpZoomManager *self,
|
|
gdouble zoom)
|
|
{
|
|
gdouble min_zoom;
|
|
gdouble max_zoom;
|
|
|
|
g_return_if_fail (SP_IS_ZOOM_MANAGER (self));
|
|
|
|
min_zoom = (self->min_zoom == 0.0) ? -G_MAXDOUBLE : self->min_zoom;
|
|
max_zoom = (self->max_zoom == 0.0) ? G_MAXDOUBLE : self->max_zoom;
|
|
|
|
zoom = CLAMP (zoom, min_zoom, max_zoom);
|
|
|
|
if (zoom == 0.0)
|
|
zoom = 1.0;
|
|
|
|
if (zoom != self->zoom)
|
|
{
|
|
self->zoom = zoom;
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_ZOOM]);
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CAN_ZOOM_IN]);
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CAN_ZOOM_OUT]);
|
|
}
|
|
}
|
|
|
|
static gchar **
|
|
sp_zoom_manager_list_actions (GActionGroup *action_group)
|
|
{
|
|
SpZoomManager *self = (SpZoomManager *)action_group;
|
|
|
|
g_assert (SP_IS_ZOOM_MANAGER (self));
|
|
|
|
return g_action_group_list_actions (G_ACTION_GROUP (self->actions));
|
|
}
|
|
|
|
static gboolean
|
|
sp_zoom_manager_query_action (GActionGroup *action_group,
|
|
const gchar *action_name,
|
|
gboolean *enabled,
|
|
const GVariantType **parameter_type,
|
|
const GVariantType **state_type,
|
|
GVariant **state_hint,
|
|
GVariant **state)
|
|
{
|
|
SpZoomManager *self = (SpZoomManager *)action_group;
|
|
|
|
g_assert (SP_IS_ZOOM_MANAGER (self));
|
|
g_assert (action_name != NULL);
|
|
|
|
return g_action_group_query_action (G_ACTION_GROUP (self->actions),
|
|
action_name,
|
|
enabled,
|
|
parameter_type,
|
|
state_type,
|
|
state_hint,
|
|
state);
|
|
}
|
|
|
|
static void
|
|
sp_zoom_manager_change_action_state (GActionGroup *action_group,
|
|
const gchar *action_name,
|
|
GVariant *value)
|
|
{
|
|
SpZoomManager *self = (SpZoomManager *)action_group;
|
|
|
|
g_assert (SP_IS_ZOOM_MANAGER (self));
|
|
g_assert (action_name != NULL);
|
|
|
|
g_action_group_change_action_state (G_ACTION_GROUP (self->actions), action_name, value);
|
|
}
|
|
|
|
static void
|
|
sp_zoom_manager_activate_action (GActionGroup *action_group,
|
|
const gchar *action_name,
|
|
GVariant *parameter)
|
|
{
|
|
SpZoomManager *self = (SpZoomManager *)action_group;
|
|
|
|
g_assert (SP_IS_ZOOM_MANAGER (self));
|
|
g_assert (action_name != NULL);
|
|
|
|
g_action_group_activate_action (G_ACTION_GROUP (self->actions), action_name, parameter);
|
|
}
|
|
|
|
static void
|
|
action_group_iface_init (GActionGroupInterface *iface)
|
|
{
|
|
iface->list_actions = sp_zoom_manager_list_actions;
|
|
iface->query_action = sp_zoom_manager_query_action;
|
|
iface->change_action_state = sp_zoom_manager_change_action_state;
|
|
iface->activate_action = sp_zoom_manager_activate_action;
|
|
}
|