brl/mutter
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

click-action: Add support for long press detection

Browse Source 
A long press is a special form of click action; the default
implementation uses a single signal with multiple states: query, action
and cancel. On click we use the "query" state to check whether the
ClutterClickAction supports long presses; if the callback returns TRUE
then we install a timeout and we either emit the "activate" state when
the timeout expires or we emit the "cancel" state if the pointer leaves
the actor, or if the pointer moves outside a certain threshold. If the
long press reached the "activate" state then we skip the clicked signal
emission.
This commit is contained in:
Emmanuele Bassi
2011-05-18 11:21:58 +01:00
parent 93207d08f8
commit 23a9980c72
3 changed files with 384 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
clutter/clutter-click-action.h
View File

@ -48,6 +48,23 @@ typedef struct _ClutterClickAction ClutterClickAction;
typedef struct _ClutterClickActionPrivate ClutterClickActionPrivate;
typedef struct _ClutterClickActionClass ClutterClickActionClass;
/**
* ClutterLongPressState:
* @CLUTTER_LONG_PRESS_QUERY: Queries the action whether it supports
* long presses
* @CLUTTER_LONG_PRESS_ACTIVATE: Activates the action on a long press
* @CLUTTER_LONG_PRESS_CANCEL: The long press was cancelled
*
* The states for the #ClutterClikAction::long-press signal.
*
* Since: 1.8
*/
typedef enum { /*< prefix=CLUTTER_LONG_PRESS >*/
CLUTTER_LONG_PRESS_QUERY,
CLUTTER_LONG_PRESS_ACTIVATE,
CLUTTER_LONG_PRESS_CANCEL
} ClutterLongPressState;
/**
* ClutterClickAction:
*
@ -67,6 +84,7 @@ struct _ClutterClickAction
/**
* ClutterClickActionClass:
* @clicked: class handler for the #ClutterClickAction::clicked signal
* @long_press: class handler for the #ClutterClickAction::long-press signal
*
* The <structname>ClutterClickActionClass</structname> structure
* contains only private data
@ -79,8 +97,12 @@ struct _ClutterClickActionClass
ClutterActionClass parent_class;
/*< public >*/
void (* clicked) (ClutterClickAction *action,
ClutterActor *actor);
void (* clicked) (ClutterClickAction *action,
ClutterActor *actor);
gboolean (* long_press) (ClutterClickAction *action,
ClutterActor *actor,
ClutterLongPressState state);
/*< private >*/
void (* _clutter_click_action1) (void);
@ -94,10 +116,14 @@ struct _ClutterClickActionClass
GType clutter_click_action_get_type (void) G_GNUC_CONST;
ClutterAction *clutter_click_action_new (void);
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_get_coords (ClutterClickAction *action,
gfloat *press_x,
gfloat *press_y);
void clutter_click_action_release (ClutterClickAction *action);
G_END_DECLS