6184bf1b6e
I always have to think twice before returning a value from an event signal handler, and I've been writing them for the past 10 years, so it's conceivable that application developers that start with Clutter will find them confusing as well. Simple symbolic names should be easier to use.
400 lines
13 KiB
C
400 lines
13 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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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 OpenedHand
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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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#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_EVENT_H__
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#define __CLUTTER_EVENT_H__
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#include <clutter/clutter-types.h>
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#include <clutter/clutter-input-device.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_EVENT (clutter_event_get_type ())
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/**
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* CLUTTER_PRIORITY_EVENTS:
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*
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* Priority for event handling.
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*
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* Since: 0.4
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*/
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#define CLUTTER_PRIORITY_EVENTS (G_PRIORITY_DEFAULT)
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/**
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* CLUTTER_CURRENT_TIME:
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*
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* Default value for "now".
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*
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* Since: 0.4
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*/
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#define CLUTTER_CURRENT_TIME 0L
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/**
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* CLUTTER_EVENT_PROPAGATE:
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*
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* Continues the propagation of an event; this macro should be
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* used in event-related signals.
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*
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* Since: 1.10
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*/
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#define CLUTTER_EVENT_PROPAGATE FALSE
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/**
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* CLUTTER_EVENT_STOP:
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*
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* Stops the propagattion of an event; this macro should be used
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* in event-related signals.
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*
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* Since: 1.10
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*/
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#define CLUTTER_EVENT_STOP TRUE
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typedef struct _ClutterAnyEvent ClutterAnyEvent;
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typedef struct _ClutterButtonEvent ClutterButtonEvent;
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typedef struct _ClutterKeyEvent ClutterKeyEvent;
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typedef struct _ClutterMotionEvent ClutterMotionEvent;
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typedef struct _ClutterScrollEvent ClutterScrollEvent;
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typedef struct _ClutterStageStateEvent ClutterStageStateEvent;
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typedef struct _ClutterCrossingEvent ClutterCrossingEvent;
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/**
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* ClutterAnyEvent:
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* @type: event type
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* @time: event time
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* @flags: event flags
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* @source: event source actor
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*
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* Common members for a #ClutterEvent
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*
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* Since: 0.2
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*/
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struct _ClutterAnyEvent
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{
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ClutterEventType type;
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guint32 time;
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ClutterEventFlags flags;
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ClutterStage *stage;
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ClutterActor *source;
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};
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/**
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* ClutterKeyEvent:
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* @type: event type
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* @time: event time
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* @flags: event flags
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* @stage: event source stage
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* @source: event source actor
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* @modifier_state: key modifiers
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* @keyval: raw key value
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* @hardware_keycode: raw hardware key value
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* @unicode_value: Unicode representation
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* @device: reserved for future use
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*
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* Key event
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*
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* Since: 0.2
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*/
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struct _ClutterKeyEvent
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{
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ClutterEventType type;
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guint32 time;
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ClutterEventFlags flags;
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ClutterStage *stage;
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ClutterActor *source;
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ClutterModifierType modifier_state;
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guint keyval;
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guint16 hardware_keycode;
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gunichar unicode_value;
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ClutterInputDevice *device;
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};
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/**
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* ClutterButtonEvent:
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* @type: event type
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* @time: event time
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* @flags: event flags
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* @stage: event source stage
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* @source: event source actor
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* @x: event X coordinate, relative to the stage
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* @y: event Y coordinate, relative to the stage
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* @modifier_state: button modifiers
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* @button: event button
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* @click_count: number of button presses within the default time
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* and radius
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* @axes: reserved for future use
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* @device: reserved for future use
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*
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* Button event.
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*
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* The event coordinates are relative to the stage that received the
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* event, and can be transformed into actor-relative coordinates by
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* using clutter_actor_transform_stage_point().
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*
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* Since: 0.2
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*/
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struct _ClutterButtonEvent
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{
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ClutterEventType type;
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guint32 time;
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ClutterEventFlags flags;
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ClutterStage *stage;
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ClutterActor *source;
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gfloat x;
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gfloat y;
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ClutterModifierType modifier_state;
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guint32 button;
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guint click_count;
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gdouble *axes; /* Future use */
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ClutterInputDevice *device;
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};
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/**
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* ClutterCrossingEvent:
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* @type: event type
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* @time: event time
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* @flags: event flags
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* @stage: event source stage
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* @source: event source actor
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* @x: event X coordinate
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* @y: event Y coordinate
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* @related: actor related to the crossing
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* @device: reserved for future use
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*
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* Event for the movement of the pointer across different actors
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*
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* Since: 0.2
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*/
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struct _ClutterCrossingEvent
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{
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ClutterEventType type;
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guint32 time;
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ClutterEventFlags flags;
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ClutterStage *stage;
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ClutterActor *source;
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gfloat x;
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gfloat y;
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ClutterInputDevice *device;
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ClutterActor *related;
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};
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/**
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* ClutterMotionEvent:
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* @type: event type
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* @time: event time
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* @flags: event flags
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* @stage: event source stage
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* @source: event source actor
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* @x: event X coordinate
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* @y: event Y coordinate
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* @modifier_state: button modifiers
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* @axes: reserved for future use
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* @device: reserved for future use
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*
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* Event for the pointer motion
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*
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* Since: 0.2
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*/
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struct _ClutterMotionEvent
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{
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ClutterEventType type;
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guint32 time;
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ClutterEventFlags flags;
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ClutterStage *stage;
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ClutterActor *source;
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gfloat x;
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gfloat y;
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ClutterModifierType modifier_state;
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gdouble *axes; /* Future use */
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ClutterInputDevice *device;
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};
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/**
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* ClutterScrollEvent:
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* @type: event type
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* @time: event time
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* @flags: event flags
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* @stage: event source stage
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* @source: event source actor
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* @x: event X coordinate
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* @y: event Y coordinate
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* @direction: direction of the scrolling
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* @modifier_state: button modifiers
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* @axes: reserved for future use
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* @device: reserved for future use
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*
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* Scroll wheel (or similar device) event
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*
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* Since: 0.2
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*/
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struct _ClutterScrollEvent
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{
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ClutterEventType type;
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guint32 time;
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ClutterEventFlags flags;
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ClutterStage *stage;
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ClutterActor *source;
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gfloat x;
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gfloat y;
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ClutterScrollDirection direction;
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ClutterModifierType modifier_state;
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gdouble *axes; /* future use */
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ClutterInputDevice *device;
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};
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/**
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* ClutterStageStateEvent:
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* @type: event type
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* @time: event time
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* @flags: event flags
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* @stage: event source stage
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* @source: event source actor (unused)
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* @changed_mask: bitwise OR of the changed flags
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* @new_state: bitwise OR of the current state flags
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*
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* Event signalling a change in the #ClutterStage state.
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*
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* Since: 0.2
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*/
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struct _ClutterStageStateEvent
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{
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ClutterEventType type;
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guint32 time;
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ClutterEventFlags flags;
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ClutterStage *stage;
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ClutterActor *source; /* XXX: should probably be the stage itself */
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ClutterStageState changed_mask;
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ClutterStageState new_state;
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};
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/**
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* ClutterEvent:
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*
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* Generic event wrapper.
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*
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* Since: 0.2
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*/
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union _ClutterEvent
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{
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/*< private >*/
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ClutterEventType type;
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ClutterAnyEvent any;
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ClutterButtonEvent button;
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ClutterKeyEvent key;
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ClutterMotionEvent motion;
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ClutterScrollEvent scroll;
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ClutterStageStateEvent stage_state;
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ClutterCrossingEvent crossing;
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};
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GType clutter_event_get_type (void) G_GNUC_CONST;
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gboolean clutter_events_pending (void);
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ClutterEvent * clutter_event_get (void);
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ClutterEvent * clutter_event_peek (void);
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void clutter_event_put (const ClutterEvent *event);
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ClutterEvent * clutter_event_new (ClutterEventType type);
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ClutterEvent * clutter_event_copy (const ClutterEvent *event);
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void clutter_event_free (ClutterEvent *event);
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ClutterEventType clutter_event_type (const ClutterEvent *event);
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void clutter_event_set_flags (ClutterEvent *event,
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ClutterEventFlags flags);
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ClutterEventFlags clutter_event_get_flags (const ClutterEvent *event);
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void clutter_event_set_time (ClutterEvent *event,
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guint32 time_);
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guint32 clutter_event_get_time (const ClutterEvent *event);
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void clutter_event_set_state (ClutterEvent *event,
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ClutterModifierType state);
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ClutterModifierType clutter_event_get_state (const ClutterEvent *event);
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void clutter_event_set_device (ClutterEvent *event,
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ClutterInputDevice *device);
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ClutterInputDevice * clutter_event_get_device (const ClutterEvent *event);
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void clutter_event_set_source_device (ClutterEvent *event,
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ClutterInputDevice *device);
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ClutterInputDevice * clutter_event_get_source_device (const ClutterEvent *event);
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void clutter_event_set_source (ClutterEvent *event,
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ClutterActor *actor);
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ClutterActor * clutter_event_get_source (const ClutterEvent *event);
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void clutter_event_set_stage (ClutterEvent *event,
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ClutterStage *stage);
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ClutterStage * clutter_event_get_stage (const ClutterEvent *event);
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gint clutter_event_get_device_id (const ClutterEvent *event);
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ClutterInputDeviceType clutter_event_get_device_type (const ClutterEvent *event);
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void clutter_event_set_coords (ClutterEvent *event,
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gfloat x,
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gfloat y);
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void clutter_event_get_coords (const ClutterEvent *event,
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gfloat *x,
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gfloat *y);
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gdouble * clutter_event_get_axes (const ClutterEvent *event,
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guint *n_axes);
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void clutter_event_set_key_symbol (ClutterEvent *event,
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guint key_sym);
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guint clutter_event_get_key_symbol (const ClutterEvent *event);
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void clutter_event_set_key_code (ClutterEvent *event,
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guint16 key_code);
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guint16 clutter_event_get_key_code (const ClutterEvent *event);
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void clutter_event_set_key_unicode (ClutterEvent *event,
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guint32 key_unicode);
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guint32 clutter_event_get_key_unicode (const ClutterEvent *event);
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void clutter_event_set_button (ClutterEvent *event,
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guint32 button);
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guint32 clutter_event_get_button (const ClutterEvent *event);
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guint clutter_event_get_click_count (const ClutterEvent *event);
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void clutter_event_set_related (ClutterEvent *event,
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ClutterActor *actor);
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ClutterActor * clutter_event_get_related (const ClutterEvent *event);
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void clutter_event_set_scroll_direction (ClutterEvent *event,
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ClutterScrollDirection direction);
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ClutterScrollDirection clutter_event_get_scroll_direction (const ClutterEvent *event);
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guint32 clutter_keysym_to_unicode (guint keyval);
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guint clutter_unicode_to_keysym (guint32 wc);
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guint32 clutter_get_current_event_time (void);
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const ClutterEvent * clutter_get_current_event (void);
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G_END_DECLS
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#endif /* __CLUTTER_EVENT_H__ */
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