b3784bd2b4
When synthesizing events coming from input devices it should be possible to just call a setter function, to avoid a huge switch on the type of the event. Clutter should also store the device pointer inside the private data, for faster access of the pointer in allocated events. Finally, the get_device_id() and get_device_type() accessors should just be wrappers around clutter_event_get_device(), to reduce the amount of code duplication.
437 lines
12 KiB
C
437 lines
12 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 <glib-object.h>
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#include <clutter/clutter-input-device.h>
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#include <clutter/clutter-types.h>
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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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G_BEGIN_DECLS
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/**
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* ClutterEventFlags:
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* @CLUTTER_EVENT_NONE: No flag set
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* @CLUTTER_EVENT_FLAG_SYNTHETIC: Synthetic event
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*
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* Flags for the #ClutterEvent
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*
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* Since: 0.6
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*/
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typedef enum {
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CLUTTER_EVENT_NONE = 0,
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CLUTTER_EVENT_FLAG_SYNTHETIC = 1 << 0
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} ClutterEventFlags;
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/**
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* ClutterEventType:
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* @CLUTTER_NOTHING: Empty event
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* @CLUTTER_KEY_PRESS: Key press event
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* @CLUTTER_KEY_RELEASE: Key release event
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* @CLUTTER_MOTION: Pointer motion event
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* @CLUTTER_ENTER: Actor enter event
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* @CLUTTER_LEAVE: Actor leave event
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* @CLUTTER_BUTTON_PRESS: Pointer button press event
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* @CLUTTER_BUTTON_RELEASE: Pointer button release event
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* @CLUTTER_SCROLL: Pointer scroll event
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* @CLUTTER_STAGE_STATE: Stage stage change event
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* @CLUTTER_DESTROY_NOTIFY: Destroy notification event
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* @CLUTTER_CLIENT_MESSAGE: Client message event
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* @CLUTTER_DELETE: Stage delete event
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*
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* Types of events.
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*
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* Since: 0.4
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*/
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typedef enum
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{
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CLUTTER_NOTHING = 0,
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CLUTTER_KEY_PRESS,
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CLUTTER_KEY_RELEASE,
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CLUTTER_MOTION,
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CLUTTER_ENTER,
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CLUTTER_LEAVE,
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CLUTTER_BUTTON_PRESS,
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CLUTTER_BUTTON_RELEASE,
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CLUTTER_SCROLL,
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CLUTTER_STAGE_STATE,
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CLUTTER_DESTROY_NOTIFY,
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CLUTTER_CLIENT_MESSAGE,
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CLUTTER_DELETE
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} ClutterEventType;
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/**
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* ClutterScrollDirection:
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* @CLUTTER_SCROLL_UP: Scroll up
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* @CLUTTER_SCROLL_DOWN: Scroll down
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* @CLUTTER_SCROLL_LEFT: Scroll left
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* @CLUTTER_SCROLL_RIGHT: Scroll right
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*
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* Direction of a pointer scroll event.
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*
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* Since: 0.4
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*/
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typedef enum
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{
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CLUTTER_SCROLL_UP,
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CLUTTER_SCROLL_DOWN,
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CLUTTER_SCROLL_LEFT,
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CLUTTER_SCROLL_RIGHT
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} ClutterScrollDirection;
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/**
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* ClutterStageState:
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* @CLUTTER_STAGE_STATE_FULLSCREEN: Fullscreen mask
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* @CLUTTER_STAGE_STATE_OFFSCREEN: Offscreen mask
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* @CLUTTER_STAGE_STATE_ACTIVATED: Activated mask
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*
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* Stage state masks
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*
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* Since: 0.4
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*/
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typedef enum
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{
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CLUTTER_STAGE_STATE_FULLSCREEN = (1<<1),
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CLUTTER_STAGE_STATE_OFFSCREEN = (1<<2),
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CLUTTER_STAGE_STATE_ACTIVATED = (1<<3)
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} ClutterStageState;
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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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ClutterEventFlags clutter_event_get_flags (const ClutterEvent *event);
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guint32 clutter_event_get_time (const ClutterEvent *event);
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ClutterModifierType clutter_event_get_state (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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ClutterInputDevice * clutter_event_get_device (const ClutterEvent *event);
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ClutterInputDevice * clutter_event_get_source_device (const ClutterEvent *event);
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ClutterActor * clutter_event_get_source (const ClutterEvent *event);
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ClutterStage * clutter_event_get_stage (const ClutterEvent *event);
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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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guint clutter_event_get_key_symbol (const ClutterEvent *event);
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guint16 clutter_event_get_key_code (const ClutterEvent *event);
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guint32 clutter_event_get_key_unicode (const ClutterEvent *event);
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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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ClutterActor * clutter_event_get_related (const ClutterEvent *event);
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ClutterScrollDirection clutter_event_get_scroll_direction (const ClutterEvent *event);
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void clutter_event_set_device (ClutterEvent *event,
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ClutterInputDevice *device);
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guint32 clutter_keysym_to_unicode (guint keyval);
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guint32 clutter_get_current_event_time (void);
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G_CONST_RETURN 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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