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82a30d8e0b
ClutterDragAction should be able to use the newly added ClutterSettings property exposing the system's drag threshold. Currently, the x-drag-threshold and the y-drag-threshold properties (and relative accessors) use an unsigned integer for their values; we should be able to safely expand the range to include -1 as the minimum value, and use this new value to tell the ClutterDragAction that it should query the ClutterSettings object for the drag threshold. The storage of the properties has been changed, albeit in a compatible way, as GObject installs a uint ↔ int transformation function for GValue automatically. The setter for the drag thresholds has been changes to use a signed integer, but the getter has been updated to always Do The Right Thing™: it never returns -1 but, instead, will return the valid drag threshold, either from the value set or from the Settings singleton. This change is ABI compatible. http://bugzilla.clutter-project.org/show_bug.cgi?id=2583
149 lines
5.8 KiB
C
149 lines
5.8 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2010 Intel Corporation.
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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, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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*/
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#ifndef __CLUTTER_DRAG_ACTION_H__
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#define __CLUTTER_DRAG_ACTION_H__
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#include <clutter/clutter-action.h>
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#include <clutter/clutter-event.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_DRAG_ACTION (clutter_drag_action_get_type ())
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#define CLUTTER_DRAG_ACTION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_DRAG_ACTION, ClutterDragAction))
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#define CLUTTER_IS_DRAG_ACTION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_DRAG_ACTION))
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#define CLUTTER_DRAG_ACTION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_DRAG_ACTION, ClutterDragActionClass))
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#define CLUTTER_IS_DRAG_ACTION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_DRAG_ACTION))
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#define CLUTTER_DRAG_ACTION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_DRAG_ACTION, ClutterDragActionClass))
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typedef struct _ClutterDragAction ClutterDragAction;
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typedef struct _ClutterDragActionPrivate ClutterDragActionPrivate;
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typedef struct _ClutterDragActionClass ClutterDragActionClass;
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/**
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* ClutterDragAxis:
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* @CLUTTER_DRAG_AXIS_NONE: No constraint
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* @CLUTTER_DRAG_X_AXIS: Set a constraint on the X axis
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* @CLUTTER_DRAG_Y_AXIS: Set a constraint on the Y axis
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*
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* The axis of the constraint that should be applied on the
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* dragging action
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*
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* Since: 1.4
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*/
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typedef enum { /*< prefix=CLUTTER_DRAG >*/
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CLUTTER_DRAG_AXIS_NONE = 0,
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CLUTTER_DRAG_X_AXIS,
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CLUTTER_DRAG_Y_AXIS
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} ClutterDragAxis;
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/**
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* ClutterDragAction:
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*
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* The <structname>ClutterDragAction</structname> structure contains only
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* private data and should be accessed using the provided API
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*
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* Since: 1.4
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*/
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struct _ClutterDragAction
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{
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/*< private >*/
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ClutterAction parent_instance;
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ClutterDragActionPrivate *priv;
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};
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/**
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* ClutterDragActionClass:
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* @drag_begin: class handler of the #ClutterDragAction::drag-begin signal
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* @drag_motion: class handler of the #ClutterDragAction::drag-motion signal
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* @drag_end: class handler of the #ClutterDragAction::drag-end signal
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*
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* The <structname>ClutterDragActionClass</structname> structure contains
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* only private data
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*
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* Since: 1.4
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*/
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struct _ClutterDragActionClass
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{
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/*< private >*/
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ClutterActionClass parent_class;
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/*< public >*/
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void (* drag_begin) (ClutterDragAction *action,
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ClutterActor *actor,
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gfloat event_x,
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gfloat event_y,
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ClutterModifierType modifiers);
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void (* drag_motion) (ClutterDragAction *action,
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ClutterActor *actor,
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gfloat delta_x,
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gfloat delta_y);
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void (* drag_end) (ClutterDragAction *action,
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ClutterActor *actor,
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gfloat event_x,
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gfloat event_y,
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ClutterModifierType modifiers);
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/*< private >*/
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void (* _clutter_drag_action1) (void);
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void (* _clutter_drag_action2) (void);
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void (* _clutter_drag_action3) (void);
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void (* _clutter_drag_action4) (void);
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void (* _clutter_drag_action5) (void);
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};
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GType clutter_drag_action_get_type (void) G_GNUC_CONST;
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ClutterAction * clutter_drag_action_new (void);
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void clutter_drag_action_set_drag_threshold (ClutterDragAction *action,
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gint x_threshold,
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gint y_threshold);
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void clutter_drag_action_get_drag_threshold (ClutterDragAction *action,
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guint *x_threshold,
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guint *y_threshold);
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void clutter_drag_action_set_drag_handle (ClutterDragAction *action,
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ClutterActor *handle);
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ClutterActor * clutter_drag_action_get_drag_handle (ClutterDragAction *action);
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void clutter_drag_action_set_drag_axis (ClutterDragAction *action,
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ClutterDragAxis axis);
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ClutterDragAxis clutter_drag_action_get_drag_axis (ClutterDragAction *action);
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void clutter_drag_action_get_press_coords (ClutterDragAction *action,
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gfloat *press_x,
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gfloat *press_y);
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void clutter_drag_action_get_motion_coords (ClutterDragAction *action,
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gfloat *motion_x,
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gfloat *motion_y);
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G_END_DECLS
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#endif /* __CLUTTER_DRAG_ACTION_H__ */
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