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gtk/gdk/gdkevents.h
Rui Matos 43f1b5abbc gdk: Add GDK_WINDOW_STATE_FOCUSED to GdkWindowState 
This state means that the toplevel window is presented as focused to the user,
i.e with active decorations under an X11 window manager.

If the GDK backend doesn't implement this flag, it will just remain set after
mapping the window.

https://bugzilla.gnome.org/show_bug.cgi?id=661428
2011-11-08 19:25:51 +00:00

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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, 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
/**
* SECTION:event_structs
* @Short_description: Data structures specific to each type of event
* @Title: Event Structures
*
* The event structs contain data specific to each type of event in GDK.
*
* <note>
* <para>
* A common mistake is to forget to set the event mask of a widget so that
* the required events are received. See gtk_widget_set_events().
* </para>
* </note>
*/
#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 _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 _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: (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);
/* 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_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_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;
/**
* GdkVisibilityState:
* @GDK_VISIBILITY_UNOBSCURED: the window is completely visible.
* @GDK_VISIBILITY_PARTIAL: the window is partially visible.
* @GDK_VISIBILITY_FULLY_OBSCURED: the window is not visible at all.
*
* Specifies the visiblity status of a window for a #GdkEventVisibility.
*/
typedef enum
{
GDK_VISIBILITY_UNOBSCURED,
GDK_VISIBILITY_PARTIAL,
GDK_VISIBILITY_FULLY_OBSCURED
} GdkVisibilityState;
/**
* GdkScrollDirection:
* @GDK_SCROLL_UP: the window is scrolled up.
* @GDK_SCROLL_DOWN: the window is scrolled down.
* @GDK_SCROLL_LEFT: the window is scrolled to the left.
* @GDK_SCROLL_RIGHT: the window is scrolled to the right.
*
* Specifies the direction for #GdkEventScroll.
*/
typedef enum
{
GDK_SCROLL_UP,
GDK_SCROLL_DOWN,
GDK_SCROLL_LEFT,
GDK_SCROLL_RIGHT
} GdkScrollDirection;
/**
* GdkNotifyType:
* @GDK_NOTIFY_ANCESTOR: the window is entered from an ancestor or
* left towards an ancestor.
* @GDK_NOTIFY_VIRTUAL: the pointer moves between an ancestor and an
* inferior of the window.
* @GDK_NOTIFY_INFERIOR: the window is entered from an inferior or
* left towards an inferior.
* @GDK_NOTIFY_NONLINEAR: the window is entered from or left towards
* a window which is neither an ancestor nor an inferior.
* @GDK_NOTIFY_NONLINEAR_VIRTUAL: the pointer moves between two windows
* which are not ancestors of each other and the window is part of
* the ancestor chain between one of these windows and their least
* common ancestor.
* @GDK_NOTIFY_UNKNOWN: an unknown type of enter/leave event occurred.
*
* Specifies the kind of crossing for #GdkEventCrossing.
*
* See the X11 protocol specification of <type>LeaveNotify</type> 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).
*
* Specifies the crossing mode for #GdkEventCrossing.
*/
typedef enum
{
GDK_CROSSING_NORMAL,
GDK_CROSSING_GRAB,
GDK_CROSSING_UNGRAB,
GDK_CROSSING_GTK_GRAB,
GDK_CROSSING_GTK_UNGRAB,
GDK_CROSSING_STATE_CHANGED
} GdkCrossingMode;
/**
* GdkPropertyState:
* @GDK_PROPERTY_NEW_VALUE: the property value was changed.
* @GDK_PROPERTY_DELETE: the property was deleted.
*
* Specifies the type of a property change for a #GdkEventProperty.
*/
typedef enum
{
GDK_PROPERTY_NEW_VALUE,
GDK_PROPERTY_DELETE
} GdkPropertyState;
/**
* GdkWindowState:
* @GDK_WINDOW_STATE_WITHDRAWN: the window is not shown.
* @GDK_WINDOW_STATE_ICONIFIED: the window is minimized.
* @GDK_WINDOW_STATE_MAXIMIZED: the window is maximized.
* @GDK_WINDOW_STATE_STICKY: the window is sticky.
* @GDK_WINDOW_STATE_FULLSCREEN: the window is maximized without
* decorations.
* @GDK_WINDOW_STATE_ABOVE: the window is kept above other windows.
* @GDK_WINDOW_STATE_BELOW: the window is kept below other windows.
* @GDK_WINDOW_STATE_FOCUSED: the window is presented as focused (with active decorations).
*
* Specifies the state of a toplevel window.
*/
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,
GDK_WINDOW_STATE_FOCUSED = 1 << 7
} GdkWindowState;
/**
* GdkSettingAction:
* @GDK_SETTING_ACTION_NEW: a setting was added.
* @GDK_SETTING_ACTION_CHANGED: a setting was changed.
* @GDK_SETTING_ACTION_DELETED: a setting was deleted.
*
* Specifies the kind of modification applied to a setting in a
* #GdkEventSetting.
*/
typedef enum
{
GDK_SETTING_ACTION_NEW,
GDK_SETTING_ACTION_CHANGED,
GDK_SETTING_ACTION_DELETED
} GdkSettingAction;
/**
* GdkOwnerChange:
* @GDK_OWNER_CHANGE_NEW_OWNER: some other app claimed the ownership
* @GDK_OWNER_CHANGE_DESTROY: the window was destroyed
* @GDK_OWNER_CHANGE_CLOSE: the client was closed
*
* Specifies why a selection ownership was changed.
*/
typedef enum
{
GDK_OWNER_CHANGE_NEW_OWNER,
GDK_OWNER_CHANGE_DESTROY,
GDK_OWNER_CHANGE_CLOSE
} GdkOwnerChange;
/**
* GdkEventAny:
* @type: the type of the event.
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
*
* Contains the fields which are common to all event structs.
* Any event pointer can safely be cast to a pointer to a #GdkEventAny to
* access these fields.
*/
struct _GdkEventAny
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
};
/**
* GdkEventExpose:
* @type: the type of the event (%GDK_EXPOSE or %GDK_DAMAGE).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @area: bounding box of @region.
* @region: the region that needs to be redrawn.
* @count: the number of contiguous %GDK_EXPOSE events following this one.
* The only use for this is "exposure compression", i.e. handling all
* contiguous %GDK_EXPOSE events in one go, though GDK performs some
* exposure compression so this is not normally needed.
*
* Generated when all or part of a window becomes visible and needs to be
* redrawn.
*/
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. */
};
/**
* GdkEventVisibility:
* @type: the type of the event (%GDK_VISIBILITY_NOTIFY).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @state: the new visibility state (%GDK_VISIBILITY_FULLY_OBSCURED,
* %GDK_VISIBILITY_PARTIAL or %GDK_VISIBILITY_UNOBSCURED).
*
* Generated when the window visibility status has changed.
*/
struct _GdkEventVisibility
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkVisibilityState state;
};
/**
* GdkEventMotion:
* @type: the type of the event.
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @time: the time of the event in milliseconds.
* @x: the x coordinate of the pointer relative to the window.
* @y: the y coordinate of the pointer relative to the window.
* @axes: @x, @y translated to the axes of @device, or %NULL if @device is
* the mouse.
* @state: (type GdkModifierType): a bit-mask representing the state of
* the modifier keys (e.g. Control, Shift and Alt) and the pointer
* buttons. See #GdkModifierType.
* @is_hint: set to 1 if this event is just a hint, see the
* %GDK_POINTER_MOTION_HINT_MASK value of #GdkEventMask.
* @device: the device where the event originated.
* @x_root: the x coordinate of the pointer relative to the root of the
* screen.
* @y_root: the y coordinate of the pointer relative to the root of the
* screen.
*
* Generated when the pointer moves.
*/
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;
};
/**
* GdkEventButton:
* @type: the type of the event (%GDK_BUTTON_PRESS, %GDK_2BUTTON_PRESS,
* %GDK_3BUTTON_PRESS or %GDK_BUTTON_RELEASE).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @time: the time of the event in milliseconds.
* @x: the x coordinate of the pointer relative to the window.
* @y: the y coordinate of the pointer relative to the window.
* @axes: @x, @y translated to the axes of @device, or %NULL if @device is
* the mouse.
* @state: (type GdkModifierType): a bit-mask representing the state of
* the modifier keys (e.g. Control, Shift and Alt) and the pointer
* buttons. See #GdkModifierType.
* @button: the button which was pressed or released, numbered from 1 to 5.
* Normally button 1 is the left mouse button, 2 is the middle button,
* and 3 is the right button. On 2-button mice, the middle button can
* often be simulated by pressing both mouse buttons together.
* @device: the device where the event originated.
* @x_root: the x coordinate of the pointer relative to the root of the
* screen.
* @y_root: the y coordinate of the pointer relative to the root of the
* screen.
*
* Used for button press and button release events. The
* @type field will be one of %GDK_BUTTON_PRESS,
* %GDK_2BUTTON_PRESS, %GDK_3BUTTON_PRESS, and %GDK_BUTTON_RELEASE.
*
* Double and triple-clicks result in a sequence of events being received.
* For double-clicks the order of events will be:
* <orderedlist>
* <listitem><para>%GDK_BUTTON_PRESS</para></listitem>
* <listitem><para>%GDK_BUTTON_RELEASE</para></listitem>
* <listitem><para>%GDK_BUTTON_PRESS</para></listitem>
* <listitem><para>%GDK_2BUTTON_PRESS</para></listitem>
* <listitem><para>%GDK_BUTTON_RELEASE</para></listitem>
* </orderedlist>
* Note that the first click is received just like a normal
* button press, while the second click results in a %GDK_2BUTTON_PRESS
* being received just after the %GDK_BUTTON_PRESS.
*
* Triple-clicks are very similar to double-clicks, except that
* %GDK_3BUTTON_PRESS is inserted after the third click. The order of the
* events is:
* <orderedlist>
* <listitem><para>%GDK_BUTTON_PRESS</para></listitem>
* <listitem><para>%GDK_BUTTON_RELEASE</para></listitem>
* <listitem><para>%GDK_BUTTON_PRESS</para></listitem>
* <listitem><para>%GDK_2BUTTON_PRESS</para></listitem>
* <listitem><para>%GDK_BUTTON_RELEASE</para></listitem>
* <listitem><para>%GDK_BUTTON_PRESS</para></listitem>
* <listitem><para>%GDK_3BUTTON_PRESS</para></listitem>
* <listitem><para>%GDK_BUTTON_RELEASE</para></listitem>
* </orderedlist>
*
* For a double click to occur, the second button press must occur within
* 1/4 of a second of the first. For a triple click to occur, the third
* button press must also occur within 1/2 second of the first button press.
*/
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;
};
/**
* GdkEventScroll:
* @type: the type of the event (%GDK_SCROLL).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @time: the time of the event in milliseconds.
* @x: the x coordinate of the pointer relative to the window.
* @y: the y coordinate of the pointer relative to the window.
* @state: (type GdkModifierType): a bit-mask representing the state of
* the modifier keys (e.g. Control, Shift and Alt) and the pointer
* buttons. See #GdkModifierType.
* @direction: the direction to scroll to (one of %GDK_SCROLL_UP,
* %GDK_SCROLL_DOWN, %GDK_SCROLL_LEFT and %GDK_SCROLL_RIGHT).
* @device: the device where the event originated.
* @x_root: the x coordinate of the pointer relative to the root of the
* screen.
* @y_root: the y coordinate of the pointer relative to the root of the
* screen.
*
* Generated from button presses for the buttons 4 to 7. Wheel mice are
* usually configured to generate button press events for buttons 4 and 5
* when the wheel is turned.
*/
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;
};
/**
* GdkEventKey:
* @type: the type of the event (%GDK_KEY_PRESS or %GDK_KEY_RELEASE).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @time: the time of the event in milliseconds.
* @state: (type GdkModifierType): a bit-mask representing the state of
* the modifier keys (e.g. Control, Shift and Alt) and the pointer
* buttons. See #GdkModifierType.
* @keyval: the key that was pressed or released. See the
* <filename>&lt;gdk/gdkkeysyms.h&gt;</filename> header file for a
* complete list of GDK key codes.
* @length: the length of @string.
* @string: a string containing the an approximation of the text that
* would result from this keypress. The only correct way to handle text
* input of text is using input methods (see #GtkIMContext), so this
* field is deprecated and should never be used.
* (gdk_unicode_to_keyval() provides a non-deprecated way of getting
* an approximate translation for a key.) The string is encoded in the
* encoding of the current locale (Note: this for backwards compatibility:
* strings in GTK+ and GDK are typically in UTF-8.) and NUL-terminated.
* In some cases, the translation of the key code will be a single
* NUL byte, in which case looking at @length is necessary to distinguish
* it from the an empty translation.
* @hardware_keycode: the raw code of the key that was pressed or released.
* @group: the keyboard group.
* @is_modifier: a flag that indicates if @hardware_keycode is mapped to a
* modifier. Since 2.10
*
* Describes a key press or key release event.
*/
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;
};
/**
* GdkEventCrossing:
* @type: the type of the event (%GDK_ENTER_NOTIFY or %GDK_LEAVE_NOTIFY).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @subwindow: the window that was entered or left.
* @time: the time of the event in milliseconds.
* @x: the x coordinate of the pointer relative to the window.
* @y: the y coordinate of the pointer relative to the window.
* @x_root: the x coordinate of the pointer relative to the root of the screen.
* @y_root: the y coordinate of the pointer relative to the root of the screen.
* @mode: the crossing mode (%GDK_CROSSING_NORMAL, %GDK_CROSSING_GRAB,
* %GDK_CROSSING_UNGRAB, %GDK_CROSSING_GTK_GRAB, %GDK_CROSSING_GTK_UNGRAB or
* %GDK_CROSSING_STATE_CHANGED). %GDK_CROSSING_GTK_GRAB, %GDK_CROSSING_GTK_UNGRAB,
* and %GDK_CROSSING_STATE_CHANGED were added in 2.14 and are always synthesized,
* never native.
* @detail: the kind of crossing that happened (%GDK_NOTIFY_INFERIOR,
* %GDK_NOTIFY_ANCESTOR, %GDK_NOTIFY_VIRTUAL, %GDK_NOTIFY_NONLINEAR or
* %GDK_NOTIFY_NONLINEAR_VIRTUAL).
* @focus: %TRUE if @window is the focus window or an inferior.
* @state: (type GdkModifierType): a bit-mask representing the state of
* the modifier keys (e.g. Control, Shift and Alt) and the pointer
* buttons. See #GdkModifierType.
*
* Generated when the pointer enters or leaves a window.
*/
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;
};
/**
* GdkEventFocus:
* @type: the type of the event (%GDK_FOCUS_CHANGE).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @in: %TRUE if the window has gained the keyboard focus, %FALSE if
* it has lost the focus.
*
* Describes a change of keyboard focus.
*/
struct _GdkEventFocus
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
gint16 in;
};
/**
* GdkEventConfigure:
* @type: the type of the event (%GDK_CONFIGURE).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @x: the new x coordinate of the window, relative to its parent.
* @y: the new y coordinate of the window, relative to its parent.
* @width: the new width of the window.
* @height: the new height of the window.
*
* Generated when a window size or position has changed.
*/
struct _GdkEventConfigure
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
gint x, y;
gint width;
gint height;
};
/**
* GdkEventProperty:
* @type: the type of the event (%GDK_PROPERTY_NOTIFY).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @atom: the property that was changed.
* @time: the time of the event in milliseconds.
* @state: whether the property was changed (%GDK_PROPERTY_NEW_VALUE) or
* deleted (%GDK_PROPERTY_DELETE).
*
* Describes a property change on a window.
*/
struct _GdkEventProperty
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkAtom atom;
guint32 time;
guint state;
};
/**
* GdkEventSelection:
* @type: the type of the event (%GDK_SELECTION_CLEAR,
* %GDK_SELECTION_NOTIFY or %GDK_SELECTION_REQUEST).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @selection: the selection.
* @target: the target to which the selection should be converted.
* @property: the property in which to place the result of the conversion.
* @time: the time of the event in milliseconds.
* @requestor: the window on which to place @property or %NULL if none.
*
* Generated when a selection is requested or ownership of a selection
* is taken over by another client application.
*/
struct _GdkEventSelection
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkAtom selection;
GdkAtom target;
GdkAtom property;
guint32 time;
GdkWindow *requestor;
};
/**
* GdkEventOwnerChange:
* @type: the type of the event (%GDK_OWNER_CHANGE).
* @window: the window which received the event
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>)
* @owner: the new owner of the selection, or %NULL if there is none
* @reason: the reason for the ownership change as a #GdkOwnerChange value
* @selection: the atom identifying the selection
* @time: the timestamp of the event
* @selection_time: the time at which the selection ownership was taken
* over
*
* Generated when the owner of a selection changes. On X11, this
* information is only available if the X server supports the XFIXES
* extension.
*
* Since: 2.6
*/
struct _GdkEventOwnerChange
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkWindow *owner;
GdkOwnerChange reason;
GdkAtom selection;
guint32 time;
guint32 selection_time;
};
/**
* GdkEventProximity:
* @type: the type of the event (%GDK_PROXIMITY_IN or %GDK_PROXIMITY_OUT).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using <function>XSendEvent</function>).
* @time: the time of the event in milliseconds.
* @device: the device where the event originated.
*
* Proximity events are generated when using GDK's wrapper for the
* XInput extension. The XInput extension is an add-on for standard X
* that allows you to use nonstandard devices such as graphics tablets.
* A proximity event indicates that the stylus has moved in or out of
* contact with the tablet, or perhaps that the user's finger has moved
* in or out of contact with a touch screen.
*
* 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;
};
/**
* GdkEventSetting:
* @type: the type of the event (%GDK_SETTING).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @action: what happened to the setting (%GDK_SETTING_ACTION_NEW,
* %GDK_SETTING_ACTION_CHANGED or %GDK_SETTING_ACTION_DELETED).
* @name: the name of the setting.
*
* Generated when a setting is modified.
*/
struct _GdkEventSetting
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkSettingAction action;
char *name;
};
/**
* GdkEventWindowState:
* @type: the type of the event (%GDK_WINDOW_STATE).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @changed_mask: mask specifying what flags have changed.
* @new_window_state: the new window state, a combination of
* #GdkWindowState bits.
*
* Generated when the state of a toplevel window changes.
*/
struct _GdkEventWindowState
{
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkWindowState changed_mask;
GdkWindowState new_window_state;
};
/**
* GdkEventGrabBroken:
* @type: the type of the event (%GDK_GRAB_BROKEN)
* @window: the window which received the event, i.e. the window
* that previously owned the grab
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @keyboard: %TRUE if a keyboard grab was broken, %FALSE if a pointer
* grab was broken
* @implicit: %TRUE if the broken grab was implicit
* @grab_window: If this event is caused by another grab in the same
* application, @grab_window contains the new grab window. Otherwise
* @grab_window is %NULL.
*
* Generated when a pointer or keyboard grab is broken. On X11, this happens
* when the grab window becomes unviewable (i.e. it or one of its ancestors
* is unmapped), or if the same application grabs the pointer or keyboard
* again. Note that implicit grabs (which are initiated by button presses)
* can also cause #GdkEventGrabBroken events.
*
* Since: 2.8
*/
struct _GdkEventGrabBroken {
GdkEventType type;
GdkWindow *window;
gint8 send_event;
gboolean keyboard;
gboolean implicit;
GdkWindow *grab_window;
};
/**
* GdkEventDND:
* @type: the type of the event (%GDK_DRAG_ENTER, %GDK_DRAG_LEAVE,
* %GDK_DRAG_MOTION, %GDK_DRAG_STATUS, %GDK_DROP_START or
* %GDK_DROP_FINISHED).
* @window: the window which received the event.
* @send_event: %TRUE if the event was sent explicitly (e.g. using
* <function>XSendEvent</function>).
* @context: the #GdkDragContext for the current DND operation.
* @time: the time of the event in milliseconds.
* @x_root: the x coordinate of the pointer relative to the root of the
* screen, only set for %GDK_DRAG_MOTION and %GDK_DROP_START.
* @y_root: the y coordinate of the pointer relative to the root of the
* screen, only set for %GDK_DRAG_MOTION and %GDK_DROP_START.
*
* Generated during DND operations.
*/
struct _GdkEventDND {
GdkEventType type;
GdkWindow *window;
gint8 send_event;
GdkDragContext *context;
guint32 time;
gshort x_root, y_root;
};
/**
* GdkEvent:
*
* The #GdkEvent struct contains a union of all of the event structs,
* and allows access to the data fields in a number of ways.
*
* The event type is always the first field in all of the event structs, and
* can always be accessed with the following code, no matter what type of
* event it is:
* <informalexample>
* <programlisting>
* GdkEvent *event;
* GdkEventType type;
*
* type = event->type;
* </programlisting>
* </informalexample>
*
* To access other fields of the event structs, the pointer to the event
* can be cast to the appropriate event struct pointer, or the union member
* name can be used. For example if the event type is %GDK_BUTTON_PRESS
* then the x coordinate of the button press can be accessed with:
* <informalexample>
* <programlisting>
* GdkEvent *event;
* gdouble x;
*
* x = ((GdkEventButton*)event)->x;
* </programlisting>
* </informalexample>
* or:
* <informalexample>
* <programlisting>
* GdkEvent *event;
* gdouble x;
*
* x = event->button.x;
* </programlisting>
* </informalexample>
*/
union _GdkEvent
{
GdkEventType type;
GdkEventAny any;
GdkEventExpose 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;
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_button (const GdkEvent *event,
guint *button);
gboolean gdk_event_get_click_count (const GdkEvent *event,
guint *click_count);
gboolean gdk_event_get_keyval (const GdkEvent *event,
guint *keyval);
gboolean gdk_event_get_keycode (const GdkEvent *event,
guint16 *keycode);
gboolean gdk_event_get_scroll_direction (const GdkEvent *event,
GdkScrollDirection *direction);
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_set_source_device (GdkEvent *event,
GdkDevice *device);
GdkDevice* gdk_event_get_source_device (const GdkEvent *event);
void gdk_event_request_motions (const GdkEventMotion *event);
gboolean gdk_event_triggers_context_menu (const GdkEvent *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);
#endif /* GDK_MULTIHEAD_SAFE */
G_END_DECLS
#endif /* __GDK_EVENTS_H__ */
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