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gtk2/gdk/gdkevents.h

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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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* 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/.
*/
#if !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)
#error "Only <gdk/gdk.h> can be included directly."
#endif
#ifndef __GDK_EVENTS_H__
#define __GDK_EVENTS_H__
#include <gdk/gdkcolor.h>
#include <gdk/gdktypes.h>
#include <gdk/gdkdnd.h>
#include <gdk/gdkdevice.h>
G_BEGIN_DECLS
#define GDK_TYPE_EVENT (gdk_event_get_type ())
/**
* GDK_PRIORITY_EVENTS:
*
* This is the priority that events from the X server are given in the
* <link linkend="glib-The-Main-Event-Loop">GLib Main Loop</link>.
*/
#define GDK_PRIORITY_EVENTS (G_PRIORITY_DEFAULT)
/**
* GDK_PRIORITY_REDRAW:
*
* This is the priority that the idle handler processing window updates
* is given in the
* <link linkend="glib-The-Main-Event-Loop">GLib Main Loop</link>.
*/
#define GDK_PRIORITY_REDRAW (G_PRIORITY_HIGH_IDLE + 20)
typedef struct _GdkEventAny GdkEventAny;
typedef struct _GdkEventExpose GdkEventExpose;
typedef struct _GdkEventNoExpose GdkEventNoExpose;
typedef struct _GdkEventVisibility GdkEventVisibility;
typedef struct _GdkEventMotion GdkEventMotion;
typedef struct _GdkEventButton GdkEventButton;
typedef struct _GdkEventScroll GdkEventScroll;
typedef struct _GdkEventKey GdkEventKey;
typedef struct _GdkEventFocus GdkEventFocus;
typedef struct _GdkEventCrossing GdkEventCrossing;
typedef struct _GdkEventConfigure GdkEventConfigure;
typedef struct _GdkEventProperty GdkEventProperty;
typedef struct _GdkEventSelection GdkEventSelection;
typedef struct _GdkEventOwnerChange GdkEventOwnerChange;
typedef struct _GdkEventProximity GdkEventProximity;
typedef struct _GdkEventClient GdkEventClient;
typedef struct _GdkEventDND GdkEventDND;
typedef struct _GdkEventWindowState GdkEventWindowState;
typedef struct _GdkEventSetting GdkEventSetting;
typedef struct _GdkEventGrabBroken GdkEventGrabBroken;
typedef union _GdkEvent GdkEvent;
/**
* GdkEventFunc:
* @event: the #GdkEvent to process.
* @data: 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);
/* Event filtering */
/**
* GdkXEvent:
*
* Used to represent native events (<type>XEvent</type>s for the X11
* backend, <type>MSG</type>s for Win32).
*/
typedef void GdkXEvent; /* Can be cast to window system specific
* even type, XEvent on X11, MSG on Win32.
*/
/**
* GdkFilterReturn:
* @GDK_FILTER_CONTINUE: event not handled, continue processing.
* @GDK_FILTER_TRANSLATE: native event translated into a GDK event and stored
* in the <literal>event</literal> structure that was passed in.
* @GDK_FILTER_REMOVE: event handled, terminate processing.
*
* Specifies the result of applying a #GdkFilterFunc to a native event.
*/
typedef enum {
GDK_FILTER_CONTINUE, /* Event not handled, continue processesing */
GDK_FILTER_TRANSLATE, /* Native event translated into a GDK event and
stored in the "event" structure that was
passed in */
GDK_FILTER_REMOVE /* Terminate processing, removing event */
} GdkFilterReturn;
/**
* GdkFilterFunc:
* @xevent: the native event to filter.
* @event: the GDK event to which the X event will be translated.
* @data: user data set when the filter was installed.
*
* Specifies the type of function used to filter native events before they are
* converted to GDK events.
*
* When a filter is called, @event is unpopulated, except for
* <literal>event->window</literal>. The filter may translate the native
* event to a GDK event and store the result in @event, or handle it without
* translation. If the filter translates the event and processing should
* continue, it should return %GDK_FILTER_TRANSLATE.
*
* Returns: a #GdkFilterReturn value.
*/
typedef GdkFilterReturn (*GdkFilterFunc) (GdkXEvent *xevent,
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 window be
* hidden or destroyed, usually when the user clicks on a special icon in the
* title bar.
* @GDK_DESTROY: the window has been destroyed.
* @GDK_EXPOSE: all or part of the window 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_2BUTTON_PRESS: a mouse button has been double-clicked (clicked twice
* within a short period of time). Note that each click also generates a
* %GDK_BUTTON_PRESS event.
* @GDK_3BUTTON_PRESS: a mouse button has been clicked 3 times in a short period
* of time. Note that each click also generates a %GDK_BUTTON_PRESS event.
* @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 window.
* @GDK_LEAVE_NOTIFY: the pointer has left the window.
* @GDK_FOCUS_CHANGE: the keyboard focus has entered or left the window.
* @GDK_CONFIGURE: the size, position or stacking order of the window has changed.
* Note that GTK+ discards these events for %GDK_WINDOW_CHILD windows.
* @GDK_MAP: the window has been mapped.
* @GDK_UNMAP: the window has been unmapped.
* @GDK_PROPERTY_NOTIFY: a property on the window has been changed or deleted.
* @GDK_SELECTION_CLEAR: the application has lost ownership of a selection.
* @GDK_SELECTION_REQUEST: another application has requested a selection.
* @GDK_SELECTION_NOTIFY: a selection has been received.
* @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 window while a drag is in progress.
* @GDK_DRAG_LEAVE: the mouse has left the window while a drag is in progress.
* @GDK_DRAG_MOTION: the mouse has moved in the window while a drag is in
* progress.
* @GDK_DRAG_STATUS: the status of the drag operation initiated by the window
* has changed.
* @GDK_DROP_START: a drop operation onto the window has started.
* @GDK_DROP_FINISHED: the drop operation initiated by the window has completed.
* @GDK_CLIENT_EVENT: a message has been received from another application.
* @GDK_VISIBILITY_NOTIFY: the window visibility status has changed.
* @GDK_NO_EXPOSE: indicates that the source region was completely available
* when parts of a drawable were copied. This is not very useful.
* @GDK_SCROLL: the scroll wheel was turned
* @GDK_WINDOW_STATE: the state of a window has changed. See #GdkWindowState
* for the possible window states
* @GDK_SETTING: a setting has been modified.
* @GDK_OWNER_CHANGE: the owner of a selection has changed. This event type
* was added in 2.6
* @GDK_GRAB_BROKEN: a pointer or keyboard grab was broken. This event type
* was added in 2.8.
* @GDK_DAMAGE: the content of the window has been changed. This event type
* was added in 2.14.
* @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 = -1,
GDK_DELETE = 0,
GDK_DESTROY = 1,
GDK_EXPOSE = 2,
GDK_MOTION_NOTIFY = 3,
GDK_BUTTON_PRESS = 4,
GDK_2BUTTON_PRESS = 5,
GDK_3BUTTON_PRESS = 6,
GDK_BUTTON_RELEASE = 7,
GDK_KEY_PRESS = 8,
GDK_KEY_RELEASE = 9,
GDK_ENTER_NOTIFY = 10,
GDK_LEAVE_NOTIFY = 11,
GDK_FOCUS_CHANGE = 12,
GDK_CONFIGURE = 13,
GDK_MAP = 14,
GDK_UNMAP = 15,
GDK_PROPERTY_NOTIFY = 16,
GDK_SELECTION_CLEAR = 17,
GDK_SELECTION_REQUEST = 18,
GDK_SELECTION_NOTIFY = 19,
GDK_PROXIMITY_IN = 20,
GDK_PROXIMITY_OUT = 21,
GDK_DRAG_ENTER = 22,
GDK_DRAG_LEAVE = 23,
GDK_DRAG_MOTION = 24,
GDK_DRAG_STATUS = 25,
GDK_DROP_START = 26,
GDK_DROP_FINISHED = 27,
GDK_CLIENT_EVENT = 28,
GDK_VISIBILITY_NOTIFY = 29,
GDK_NO_EXPOSE = 30,
GDK_SCROLL = 31,
GDK_WINDOW_STATE = 32,
GDK_SETTING = 33,
GDK_OWNER_CHANGE = 34,
GDK_GRAB_BROKEN = 35,
GDK_DAMAGE = 36,
GDK_EVENT_LAST /* helper variable for decls */
} GdkEventType;
typedef enum
{
GDK_VISIBILITY_UNOBSCURED,
GDK_VISIBILITY_PARTIAL,
GDK_VISIBILITY_FULLY_OBSCURED
} GdkVisibilityState;
typedef enum
{
GDK_SCROLL_UP,
GDK_SCROLL_DOWN,
GDK_SCROLL_LEFT,
GDK_SCROLL_RIGHT
} GdkScrollDirection;
/* Types of enter/leave notifications.
* Ancestor:
* Virtual:
* Inferior:
* Nonlinear:
* NonlinearVirtual:
* Unknown: An unknown type of enter/leave event occurred.
*/
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;
/* Enter/leave event modes.
* NotifyNormal
* NotifyGrab
* NotifyUngrab
*/
typedef enum
{
GDK_CROSSING_NORMAL,
GDK_CROSSING_GRAB,
GDK_CROSSING_UNGRAB,
GDK_CROSSING_GTK_GRAB,
GDK_CROSSING_GTK_UNGRAB,
GDK_CROSSING_STATE_CHANGED
} GdkCrossingMode;
typedef enum
{
GDK_PROPERTY_NEW_VALUE,
GDK_PROPERTY_DELETE
} GdkPropertyState;
typedef enum
{
GDK_WINDOW_STATE_WITHDRAWN = 1 << 0,
GDK_WINDOW_STATE_ICONIFIED = 1 << 1,
GDK_WINDOW_STATE_MAXIMIZED = 1 << 2,
GDK_WINDOW_STATE_STICKY = 1 << 3,
GDK_WINDOW_STATE_FULLSCREEN = 1 << 4,
GDK_WINDOW_STATE_ABOVE = 1 << 5,
GDK_WINDOW_STATE_BELOW = 1 << 6
} GdkWindowState;
typedef enum
{
GDK_SETTING_ACTION_NEW,
GDK_SETTING_ACTION_CHANGED,
GDK_SETTING_ACTION_DELETED
} GdkSettingAction;
typedef enum
{
GDK_OWNER_CHANGE_NEW_OWNER,
GDK_OWNER_CHANGE_DESTROY,
GDK_OWNER_CHANGE_CLOSE
} GdkOwnerChange;
struct _GdkEventAny
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
};
struct _GdkEventExpose
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkRectangle area;
cairo_region_t *region;
gint count; /* If non-zero, how many more events follow. */
};
struct _GdkEventNoExpose
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
};
struct _GdkEventVisibility
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkVisibilityState state;
};
struct _GdkEventMotion
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
guint32 time;
gdouble x;
gdouble y;
gdouble *axes;
guint state;
gint16 is_hint;
GdkDevice *device;
gdouble x_root, y_root;
};
struct _GdkEventButton
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
guint32 time;
gdouble x;
gdouble y;
gdouble *axes;
guint state;
guint button;
GdkDevice *device;
gdouble x_root, y_root;
};
struct _GdkEventScroll
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
guint32 time;
gdouble x;
gdouble y;
guint state;
GdkScrollDirection direction;
GdkDevice *device;
gdouble x_root, y_root;
};
struct _GdkEventKey
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
guint32 time;
guint state;
guint keyval;
gint length;
gchar *string;
guint16 hardware_keycode;
guint8 group;
guint is_modifier : 1;
};
struct _GdkEventCrossing
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkWindow *subwindow;
guint32 time;
gdouble x;
gdouble y;
gdouble x_root;
gdouble y_root;
GdkCrossingMode mode;
GdkNotifyType detail;
gboolean focus;
guint state;
};
struct _GdkEventFocus
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
gint16 in;
};
struct _GdkEventConfigure
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
gint x, y;
gint width;
gint height;
};
struct _GdkEventProperty
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkAtom atom;
guint32 time;
guint state;
};
struct _GdkEventSelection
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkAtom selection;
GdkAtom target;
GdkAtom property;
guint32 time;
GdkNativeWindow requestor;
};
struct _GdkEventOwnerChange
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkNativeWindow owner;
GdkOwnerChange reason;
GdkAtom selection;
guint32 time;
guint32 selection_time;
};
/* This event type will be used pretty rarely. It only is important
for XInput aware programs that are drawing their own cursor */
struct _GdkEventProximity
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
guint32 time;
GdkDevice *device;
};
struct _GdkEventClient
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkAtom message_type;
gushort data_format;
union {
char b[20];
short s[10];
long l[5];
} data;
};
struct _GdkEventSetting
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkSettingAction action;
char *name;
};
struct _GdkEventWindowState
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkWindowState changed_mask;
GdkWindowState new_window_state;
};
struct _GdkEventGrabBroken {
GdkEventType type;
GdkWindow *window;
gint8 send_event;
gboolean keyboard;
gboolean implicit;
GdkWindow *grab_window;
};
/* Event types for DND */
struct _GdkEventDND {
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkDragContext *context;
guint32 time;
gshort x_root, y_root;
};
union _GdkEvent
{
GdkEventType type;
GdkEventAny any;
GdkEventExpose expose;
GdkEventNoExpose no_expose;
GdkEventVisibility visibility;
GdkEventMotion motion;
GdkEventButton button;
GdkEventScroll scroll;
GdkEventKey key;
GdkEventCrossing crossing;
GdkEventFocus focus_change;
GdkEventConfigure configure;
GdkEventProperty property;
GdkEventSelection selection;
GdkEventOwnerChange owner_change;
GdkEventProximity proximity;
GdkEventClient client;
GdkEventDND dnd;
GdkEventWindowState window_state;
GdkEventSetting setting;
GdkEventGrabBroken grab_broken;
};
GType gdk_event_get_type (void) G_GNUC_CONST;
gboolean gdk_events_pending (void);
GdkEvent* gdk_event_get (void);
GdkEvent* gdk_event_peek (void);
void gdk_event_put (const GdkEvent *event);
GdkEvent* gdk_event_new (GdkEventType type);
GdkEvent* gdk_event_copy (const GdkEvent *event);
void gdk_event_free (GdkEvent *event);
guint32 gdk_event_get_time (const GdkEvent *event);
gboolean gdk_event_get_state (const GdkEvent *event,
GdkModifierType *state);
gboolean gdk_event_get_coords (const GdkEvent *event,
gdouble *x_win,
gdouble *y_win);
gboolean gdk_event_get_root_coords (const GdkEvent *event,
gdouble *x_root,
gdouble *y_root);
gboolean gdk_event_get_axis (const GdkEvent *event,
GdkAxisUse axis_use,
gdouble *value);
void gdk_event_set_device (GdkEvent *event,
GdkDevice *device);
GdkDevice* gdk_event_get_device (const GdkEvent *event);
void gdk_event_request_motions (const GdkEventMotion *event);
gboolean gdk_events_get_distance (GdkEvent *event1,
GdkEvent *event2,
gdouble *distance);
gboolean gdk_events_get_angle (GdkEvent *event1,
GdkEvent *event2,
gdouble *angle);
gboolean gdk_events_get_center (GdkEvent *event1,
GdkEvent *event2,
gdouble *x,
gdouble *y);
void gdk_event_handler_set (GdkEventFunc func,
gpointer data,
GDestroyNotify notify);
void gdk_event_set_screen (GdkEvent *event,
GdkScreen *screen);
GdkScreen *gdk_event_get_screen (const GdkEvent *event);
void gdk_set_show_events (gboolean show_events);
gboolean gdk_get_show_events (void);
#ifndef GDK_MULTIHEAD_SAFE
gboolean gdk_setting_get (const gchar *name,
GValue *value);
void gdk_add_client_message_filter (GdkAtom message_type,
GdkFilterFunc func,
gpointer data);
gboolean gdk_event_send_client_message (GdkEvent *event,
GdkNativeWindow winid);
void gdk_event_send_clientmessage_toall (GdkEvent *event);
#endif /* GDK_MULTIHEAD_SAFE */
gboolean gdk_event_send_client_message_for_display (GdkDisplay *display,
GdkEvent *event,
GdkNativeWindow winid);
G_END_DECLS
#endif /* __GDK_EVENTS_H__ */
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