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gtk2/gdk/gdkevents.h
Alexander Larsson 3dce0dcca7 GdkSurface: Rename lots of stuff from window->surface 
Mostly these are internal things, but the major public change is
that event.window is now event.surface.
2018-03-20 15:14:10 +01:00

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __GDK_EVENTS_H__
#define __GDK_EVENTS_H__
#if !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)
#error "Only <gdk/gdk.h> can be included directly."
#endif
#include <gdk/gdkversionmacros.h>
#include <gdk/gdktypes.h>
#include <gdk/gdkdnd.h>
#include <gdk/gdkdevice.h>
#include <gdk/gdkdevicetool.h>
G_BEGIN_DECLS
#define GDK_TYPE_EVENT (gdk_event_get_type ())
#define GDK_TYPE_EVENT_SEQUENCE (gdk_event_sequence_get_type ())
#define GDK_EVENT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_EVENT, GdkEvent))
#define GDK_IS_EVENT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_EVENT))
/**
* GDK_PRIORITY_EVENTS:
*
* This is the priority that events from the X server are given in the
* [GLib Main Loop][glib-The-Main-Event-Loop].
*/
#define GDK_PRIORITY_EVENTS (G_PRIORITY_DEFAULT)
/**
* GDK_PRIORITY_REDRAW:
*
* This is the priority that the idle handler processing surface updates
* is given in the
* [GLib Main Loop][glib-The-Main-Event-Loop].
*/
#define GDK_PRIORITY_REDRAW (G_PRIORITY_HIGH_IDLE + 20)
/**
* GDK_EVENT_PROPAGATE:
*
* Use this macro as the return value for continuing the propagation of
* an event handler.
*
* Since: 3.4
*/
#define GDK_EVENT_PROPAGATE (FALSE)
/**
* GDK_EVENT_STOP:
*
* Use this macro as the return value for stopping the propagation of
* an event handler.
*
* Since: 3.4
*/
#define GDK_EVENT_STOP (TRUE)
/**
* GDK_BUTTON_PRIMARY:
*
* The primary button. This is typically the left mouse button, or the
* right button in a left-handed setup.
*
* Since: 3.4
*/
#define GDK_BUTTON_PRIMARY (1)
/**
* GDK_BUTTON_MIDDLE:
*
* The middle button.
*
* Since: 3.4
*/
#define GDK_BUTTON_MIDDLE (2)
/**
* GDK_BUTTON_SECONDARY:
*
* The secondary button. This is typically the right mouse button, or the
* left button in a left-handed setup.
*
* Since: 3.4
*/
#define GDK_BUTTON_SECONDARY (3)
typedef struct _GdkEventAny GdkEventAny;
typedef struct _GdkEventExpose GdkEventExpose;
typedef struct _GdkEventMotion GdkEventMotion;
typedef struct _GdkEventButton GdkEventButton;
typedef struct _GdkEventTouch GdkEventTouch;
typedef struct _GdkEventScroll GdkEventScroll;
typedef struct _GdkEventKey GdkEventKey;
typedef struct _GdkEventFocus GdkEventFocus;
typedef struct _GdkEventCrossing GdkEventCrossing;
typedef struct _GdkEventConfigure GdkEventConfigure;
typedef struct _GdkEventProximity GdkEventProximity;
typedef struct _GdkEventDND GdkEventDND;
typedef struct _GdkEventSetting GdkEventSetting;
typedef struct _GdkEventGrabBroken GdkEventGrabBroken;
typedef struct _GdkEventTouchpadSwipe GdkEventTouchpadSwipe;
typedef struct _GdkEventTouchpadPinch GdkEventTouchpadPinch;
typedef struct _GdkEventPadButton GdkEventPadButton;
typedef struct _GdkEventPadAxis GdkEventPadAxis;
typedef struct _GdkEventPadGroupMode GdkEventPadGroupMode;
typedef struct _GdkEventSequence GdkEventSequence;
typedef union _GdkEvent GdkEvent;
/**
* GdkEventFunc:
* @event: the #GdkEvent to process.
* @data: (closure): user data set when the event handler was installed with
* gdk_event_handler_set().
*
* Specifies the type of function passed to gdk_event_handler_set() to
* handle all GDK events.
*/
typedef void (*GdkEventFunc) (GdkEvent *event,
gpointer data);
/**
* GdkEventType:
* @GDK_NOTHING: a special code to indicate a null event.
* @GDK_DELETE: the window manager has requested that the toplevel surface be
* hidden or destroyed, usually when the user clicks on a special icon in the
* title bar.
* @GDK_DESTROY: the surface has been destroyed.
* @GDK_EXPOSE: all or part of the surface has become visible and needs to be
* redrawn.
* @GDK_MOTION_NOTIFY: the pointer (usually a mouse) has moved.
* @GDK_BUTTON_PRESS: a mouse button has been pressed.
* @GDK_BUTTON_RELEASE: a mouse button has been released.
* @GDK_KEY_PRESS: a key has been pressed.
* @GDK_KEY_RELEASE: a key has been released.
* @GDK_ENTER_NOTIFY: the pointer has entered the surface.
* @GDK_LEAVE_NOTIFY: the pointer has left the surface.
* @GDK_FOCUS_CHANGE: the keyboard focus has entered or left the surface.
* @GDK_CONFIGURE: the size, position or stacking order of the surface has changed.
* Note that GTK+ discards these events for %GDK_SURFACE_CHILD surfaces.
* @GDK_MAP: the surface has been mapped.
* @GDK_UNMAP: the surface has been unmapped.
* @GDK_PROXIMITY_IN: an input device has moved into contact with a sensing
* surface (e.g. a touchscreen or graphics tablet).
* @GDK_PROXIMITY_OUT: an input device has moved out of contact with a sensing
* surface.
* @GDK_DRAG_ENTER: the mouse has entered the surface while a drag is in progress.
* @GDK_DRAG_LEAVE: the mouse has left the surface while a drag is in progress.
* @GDK_DRAG_MOTION: the mouse has moved in the surface while a drag is in
* progress.
* @GDK_DROP_START: a drop operation onto the surface has started.
* @GDK_SCROLL: the scroll wheel was turned
* @GDK_GRAB_BROKEN: a pointer or keyboard grab was broken. This event type
* was added in 2.8.
* @GDK_TOUCH_BEGIN: A new touch event sequence has just started. This event
* type was added in 3.4.
* @GDK_TOUCH_UPDATE: A touch event sequence has been updated. This event type
* was added in 3.4.
* @GDK_TOUCH_END: A touch event sequence has finished. This event type
* was added in 3.4.
* @GDK_TOUCH_CANCEL: A touch event sequence has been canceled. This event type
* was added in 3.4.
* @GDK_TOUCHPAD_SWIPE: A touchpad swipe gesture event, the current state
* is determined by its phase field. This event type was added in 3.18.
* @GDK_TOUCHPAD_PINCH: A touchpad pinch gesture event, the current state
* is determined by its phase field. This event type was added in 3.18.
* @GDK_PAD_BUTTON_PRESS: A tablet pad button press event. This event type
* was added in 3.22.
* @GDK_PAD_BUTTON_RELEASE: A tablet pad button release event. This event type
* was added in 3.22.
* @GDK_PAD_RING: A tablet pad axis event from a "ring". This event type was
* added in 3.22.
* @GDK_PAD_STRIP: A tablet pad axis event from a "strip". This event type was
* added in 3.22.
* @GDK_PAD_GROUP_MODE: A tablet pad group mode change. This event type was
* added in 3.22.
* @GDK_EVENT_LAST: marks the end of the GdkEventType enumeration. Added in 2.18
*
* Specifies the type of the event.
*
* Do not confuse these events with the signals that GTK+ widgets emit.
* Although many of these events result in corresponding signals being emitted,
* the events are often transformed or filtered along the way.
*/
typedef enum
{
GDK_NOTHING,
GDK_DELETE,
GDK_DESTROY,
GDK_EXPOSE,
GDK_MOTION_NOTIFY,
GDK_BUTTON_PRESS,
GDK_BUTTON_RELEASE,
GDK_KEY_PRESS,
GDK_KEY_RELEASE,
GDK_ENTER_NOTIFY,
GDK_LEAVE_NOTIFY,
GDK_FOCUS_CHANGE,
GDK_CONFIGURE,
GDK_MAP,
GDK_UNMAP,
GDK_PROXIMITY_IN,
GDK_PROXIMITY_OUT,
GDK_DRAG_ENTER,
GDK_DRAG_LEAVE,
GDK_DRAG_MOTION,
GDK_DROP_START,
GDK_SCROLL,
GDK_GRAB_BROKEN,
GDK_TOUCH_BEGIN,
GDK_TOUCH_UPDATE,
GDK_TOUCH_END,
GDK_TOUCH_CANCEL,
GDK_TOUCHPAD_SWIPE,
GDK_TOUCHPAD_PINCH,
GDK_PAD_BUTTON_PRESS,
GDK_PAD_BUTTON_RELEASE,
GDK_PAD_RING,
GDK_PAD_STRIP,
GDK_PAD_GROUP_MODE,
GDK_EVENT_LAST /* helper variable for decls */
} GdkEventType;
/**
* GdkTouchpadGesturePhase:
* @GDK_TOUCHPAD_GESTURE_PHASE_BEGIN: The gesture has begun.
* @GDK_TOUCHPAD_GESTURE_PHASE_UPDATE: The gesture has been updated.
* @GDK_TOUCHPAD_GESTURE_PHASE_END: The gesture was finished, changes
* should be permanently applied.
* @GDK_TOUCHPAD_GESTURE_PHASE_CANCEL: The gesture was cancelled, all
* changes should be undone.
*
* Specifies the current state of a touchpad gesture. All gestures are
* guaranteed to begin with an event with phase %GDK_TOUCHPAD_GESTURE_PHASE_BEGIN,
* followed by 0 or several events with phase %GDK_TOUCHPAD_GESTURE_PHASE_UPDATE.
*
* A finished gesture may have 2 possible outcomes, an event with phase
* %GDK_TOUCHPAD_GESTURE_PHASE_END will be emitted when the gesture is
* considered successful, this should be used as the hint to perform any
* permanent changes.
* Cancelled gestures may be so for a variety of reasons, due to hardware
* or the compositor, or due to the gesture recognition layers hinting the
* gesture did not finish resolutely (eg. a 3rd finger being added during
* a pinch gesture). In these cases, the last event will report the phase
* %GDK_TOUCHPAD_GESTURE_PHASE_CANCEL, this should be used as a hint
* to undo any visible/permanent changes that were done throughout the
* progress of the gesture.
*/
typedef enum
{
GDK_TOUCHPAD_GESTURE_PHASE_BEGIN,
GDK_TOUCHPAD_GESTURE_PHASE_UPDATE,
GDK_TOUCHPAD_GESTURE_PHASE_END,
GDK_TOUCHPAD_GESTURE_PHASE_CANCEL
} GdkTouchpadGesturePhase;
/**
* GdkScrollDirection:
* @GDK_SCROLL_UP: the surface is scrolled up.
* @GDK_SCROLL_DOWN: the surface is scrolled down.
* @GDK_SCROLL_LEFT: the surface is scrolled to the left.
* @GDK_SCROLL_RIGHT: the surface is scrolled to the right.
* @GDK_SCROLL_SMOOTH: the scrolling is determined by the delta values
* in scroll events. See gdk_event_get_scroll_deltas(). Since: 3.4
*
* Specifies the direction for scroll events.
*/
typedef enum
{
GDK_SCROLL_UP,
GDK_SCROLL_DOWN,
GDK_SCROLL_LEFT,
GDK_SCROLL_RIGHT,
GDK_SCROLL_SMOOTH
} GdkScrollDirection;
/**
* GdkNotifyType:
* @GDK_NOTIFY_ANCESTOR: the surface is entered from an ancestor or
* left towards an ancestor.
* @GDK_NOTIFY_VIRTUAL: the pointer moves between an ancestor and an
* inferior of the surface.
* @GDK_NOTIFY_INFERIOR: the surface is entered from an inferior or
* left towards an inferior.
* @GDK_NOTIFY_NONLINEAR: the surface is entered from or left towards
* a surface which is neither an ancestor nor an inferior.
* @GDK_NOTIFY_NONLINEAR_VIRTUAL: the pointer moves between two surfaces
* which are not ancestors of each other and the surface is part of
* the ancestor chain between one of these surfaces and their least
* common ancestor.
* @GDK_NOTIFY_UNKNOWN: an unknown type of enter/leave event occurred.
*
* Specifies the kind of crossing for enter and leave events.
*
* See the X11 protocol specification of LeaveNotify for
* full details of crossing event generation.
*/
typedef enum
{
GDK_NOTIFY_ANCESTOR = 0,
GDK_NOTIFY_VIRTUAL = 1,
GDK_NOTIFY_INFERIOR = 2,
GDK_NOTIFY_NONLINEAR = 3,
GDK_NOTIFY_NONLINEAR_VIRTUAL = 4,
GDK_NOTIFY_UNKNOWN = 5
} GdkNotifyType;
/**
* GdkCrossingMode:
* @GDK_CROSSING_NORMAL: crossing because of pointer motion.
* @GDK_CROSSING_GRAB: crossing because a grab is activated.
* @GDK_CROSSING_UNGRAB: crossing because a grab is deactivated.
* @GDK_CROSSING_GTK_GRAB: crossing because a GTK+ grab is activated.
* @GDK_CROSSING_GTK_UNGRAB: crossing because a GTK+ grab is deactivated.
* @GDK_CROSSING_STATE_CHANGED: crossing because a GTK+ widget changed
* state (e.g. sensitivity).
* @GDK_CROSSING_TOUCH_BEGIN: crossing because a touch sequence has begun,
* this event is synthetic as the pointer might have not left the surface.
* @GDK_CROSSING_TOUCH_END: crossing because a touch sequence has ended,
* this event is synthetic as the pointer might have not left the surface.
* @GDK_CROSSING_DEVICE_SWITCH: crossing because of a device switch (i.e.
* a mouse taking control of the pointer after a touch device), this event
* is synthetic as the pointer didn’t leave the surface.
*
* Specifies the crossing mode for enter and leave events.
*/
typedef enum
{
GDK_CROSSING_NORMAL,
GDK_CROSSING_GRAB,
GDK_CROSSING_UNGRAB,
GDK_CROSSING_GTK_GRAB,
GDK_CROSSING_GTK_UNGRAB,
GDK_CROSSING_STATE_CHANGED,
GDK_CROSSING_TOUCH_BEGIN,
GDK_CROSSING_TOUCH_END,
GDK_CROSSING_DEVICE_SWITCH
} GdkCrossingMode;
GDK_AVAILABLE_IN_ALL
GType gdk_event_get_type (void) G_GNUC_CONST;
GDK_AVAILABLE_IN_ALL
GType gdk_event_sequence_get_type (void) G_GNUC_CONST;
GDK_AVAILABLE_IN_ALL
GdkEvent* gdk_event_new (GdkEventType type);
GDK_AVAILABLE_IN_ALL
GdkEvent* gdk_event_copy (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
void gdk_event_free (GdkEvent *event);
GDK_AVAILABLE_IN_ALL
GdkSurface *gdk_event_get_surface (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
guint32 gdk_event_get_time (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_state (const GdkEvent *event,
GdkModifierType *state);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_coords (const GdkEvent *event,
gdouble *x_win,
gdouble *y_win);
GDK_AVAILABLE_IN_ALL
void gdk_event_set_coords (GdkEvent *event,
gdouble x,
gdouble y);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_root_coords (const GdkEvent *event,
gdouble *x_root,
gdouble *y_root);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_button (const GdkEvent *event,
guint *button);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_click_count (const GdkEvent *event,
guint *click_count);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_keyval (const GdkEvent *event,
guint *keyval);
GDK_AVAILABLE_IN_ALL
void gdk_event_set_keyval (GdkEvent *event,
guint keyval);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_keycode (const GdkEvent *event,
guint16 *keycode);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_key_is_modifier (const GdkEvent *event,
gboolean *is_modifier);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_key_group (const GdkEvent *event,
guint *group);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_string (const GdkEvent *event,
const char **string);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_scroll_direction (const GdkEvent *event,
GdkScrollDirection *direction);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_scroll_deltas (const GdkEvent *event,
gdouble *delta_x,
gdouble *delta_y);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_is_scroll_stop_event (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_axis (const GdkEvent *event,
GdkAxisUse axis_use,
gdouble *value);
GDK_AVAILABLE_IN_ALL
void gdk_event_set_device (GdkEvent *event,
GdkDevice *device);
GDK_AVAILABLE_IN_ALL
GdkDevice* gdk_event_get_device (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
void gdk_event_set_source_device (GdkEvent *event,
GdkDevice *device);
GDK_AVAILABLE_IN_ALL
GdkDevice* gdk_event_get_source_device (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_triggers_context_menu (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
gboolean gdk_events_get_distance (GdkEvent *event1,
GdkEvent *event2,
gdouble *distance);
GDK_AVAILABLE_IN_ALL
gboolean gdk_events_get_angle (GdkEvent *event1,
GdkEvent *event2,
gdouble *angle);
GDK_AVAILABLE_IN_ALL
gboolean gdk_events_get_center (GdkEvent *event1,
GdkEvent *event2,
gdouble *x,
gdouble *y);
GDK_AVAILABLE_IN_ALL
void gdk_event_handler_set (GdkEventFunc func,
gpointer data,
GDestroyNotify notify);
GDK_AVAILABLE_IN_ALL
void gdk_event_set_display (GdkEvent *event,
GdkDisplay *display);
GDK_AVAILABLE_IN_ALL
GdkDisplay *gdk_event_get_display (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
GdkEventSequence *gdk_event_get_event_sequence (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
GdkEventType gdk_event_get_event_type (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
GdkSeat *gdk_event_get_seat (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
void gdk_set_show_events (gboolean show_events);
GDK_AVAILABLE_IN_ALL
gboolean gdk_get_show_events (void);
GDK_AVAILABLE_IN_ALL
GdkDeviceTool *gdk_event_get_device_tool (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
void gdk_event_set_device_tool (GdkEvent *event,
GdkDeviceTool *tool);
GDK_AVAILABLE_IN_ALL
int gdk_event_get_scancode (GdkEvent *event);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_pointer_emulated (GdkEvent *event);
GDK_AVAILABLE_IN_ALL
void gdk_event_set_user_data (GdkEvent *event,
GObject *user_data);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_is_sent (const GdkEvent *event);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_drag_context (const GdkEvent *event,
GdkDragContext **context);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_crossing_mode (const GdkEvent *event,
GdkCrossingMode *mode);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_crossing_detail (const GdkEvent *event,
GdkNotifyType *detail);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_touchpad_gesture_phase (const GdkEvent *event,
GdkTouchpadGesturePhase *phase);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_touchpad_gesture_n_fingers (const GdkEvent *event,
guint *n_fingers);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_touchpad_deltas (const GdkEvent *event,
double *dx,
double *dy);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_touchpad_angle_delta (const GdkEvent *event,
double *delta);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_touchpad_scale (const GdkEvent *event,
double *scale);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_touch_emulating_pointer (const GdkEvent *event,
gboolean *emulating);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_grab_surface (const GdkEvent *event,
GdkSurface **surface);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_focus_in (const GdkEvent *event,
gboolean *focus_in);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_pad_group_mode (const GdkEvent *event,
guint *group,
guint *mode);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_pad_button (const GdkEvent *event,
guint *button);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_pad_axis_value (const GdkEvent *event,
guint *index,
gdouble *value);
GDK_AVAILABLE_IN_ALL
gboolean gdk_event_get_axes (GdkEvent *event,
gdouble **axes,
guint *n_axes);
GDK_AVAILABLE_IN_ALL
GList * gdk_event_get_motion_history (const GdkEvent *event);
G_END_DECLS
#endif /* __GDK_EVENTS_H__ */
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