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click-action: add API to get modifier type

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This is to allow implementing modified click such as ctrl+click,
shift+click, and so on.

http://bugzilla.clutter-project.org/show_bug.cgi?id=2520
This commit is contained in:
Lucas Rocha 2011-01-17 00:38:04 +00:00 committed by Emmanuele Bassi
parent 6100aee5bd
commit 6af7b76cb5
2 changed files with 41 additions and 2 deletions
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37
clutter/clutter-click-action.c
View File

@ -67,6 +67,7 @@ struct _ClutterClickActionPrivate
gulong capture_id;
guint press_button;
ClutterModifierType modifier_state;
guint is_held : 1;
guint is_pressed : 1;
@ -137,6 +138,7 @@ on_event (ClutterActor *actor,
priv->is_held = TRUE;
priv->press_button = clutter_event_get_button (event);
priv->modifier_state = clutter_event_get_state (event);
if (priv->stage == NULL)
priv->stage = clutter_actor_get_stage (actor);
@ -170,6 +172,7 @@ on_captured_event (ClutterActor *stage,
{
ClutterClickActionPrivate *priv = action->priv;
ClutterActor *actor;
ClutterModifierType modifier_state;
actor = clutter_actor_meta_get_actor (CLUTTER_ACTOR_META (action));
@ -195,6 +198,22 @@ on_captured_event (ClutterActor *stage,
if (!clutter_actor_contains (actor, clutter_event_get_source (event)))
return FALSE;
/* exclude any button-mask so that we can compare
* the press and release states properly */
modifier_state = clutter_event_get_state (event) &
~(CLUTTER_BUTTON1_MASK |
CLUTTER_BUTTON2_MASK |
CLUTTER_BUTTON3_MASK |
CLUTTER_BUTTON4_MASK |
CLUTTER_BUTTON5_MASK);
/* if press and release states don't match we
* simply ignore modifier keys. i.e. modifier keys
* are expected to be pressed throughout the whole
* click */
if (modifier_state != priv->modifier_state)
priv->modifier_state = 0;
click_action_set_pressed (action, FALSE);
g_signal_emit (action, click_signals[CLICKED], 0, actor);
break;
@ -400,3 +419,21 @@ clutter_click_action_get_button (ClutterClickAction *action)
return action->priv->press_button;
}
/**
* clutter_click_action_get_state:
* @action: a #ClutterClickAction
*
* Retrieves the modifier state of the click action.
*
* Return value: the modifier state parameter, or 0
*
* Since: 1.6
*/
ClutterModifierType
clutter_click_action_get_state (ClutterClickAction *action)
{
g_return_val_if_fail (CLUTTER_IS_CLICK_ACTION (action), 0);
return action->priv->modifier_state;
}

2
clutter/clutter-click-action.h
View File

@ -33,6 +33,7 @@
#define __CLUTTER_CLICK_ACTION_H__
#include <clutter/clutter-action.h>
#include <clutter/clutter-event.h>
G_BEGIN_DECLS
@ -96,6 +97,7 @@ GType clutter_click_action_get_type (void) G_GNUC_CONST;
ClutterAction *clutter_click_action_new (void);
guint clutter_click_action_get_button (ClutterClickAction *action);
ClutterModifierType clutter_click_action_get_state (ClutterClickAction *action);
void clutter_click_action_release (ClutterClickAction *action);
G_END_DECLS