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gtk2/gdk/gdksurface.c

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-2007 Peter Mattis, Spencer Kimball,
* Josh MacDonald, Ryan Lortie
*
* 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/.
*/
#include "config.h"
#include <cairo-gobject.h>
#include "gdksurface.h"
#include "gdkeventsprivate.h"
#include "gdkrectangle.h"
#include "gdkinternals.h"
#include "gdkintl.h"
#include "gdkdisplayprivate.h"
#include "gdkdeviceprivate.h"
#include "gdkframeclockidleprivate.h"
#include "gdkmarshalers.h"
#include "gdkglcontextprivate.h"
#include "gdk-private.h"
#include <math.h>
#include <epoxy/gl.h>
/* for the use of round() */
#include "fallback-c89.c"
#ifdef GDK_WINDOWING_WAYLAND
#include "wayland/gdkwayland.h"
#endif
/**
* SECTION:gdksurface
* @Short_description: Onscreen display areas in the target window system
* @Title: Surfaces
*
* A #GdkSurface is a (usually) rectangular region on the screen.
* It’s a low-level object, used to implement high-level objects such as
* #GtkWindow on the GTK level.
*/
/**
* GdkSurface:
*
* The GdkSurface struct contains only private fields and
* should not be accessed directly.
*/
enum {
MOVED_TO_RECT,
SIZE_CHANGED,
RENDER,
EVENT,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_SURFACE_TYPE,
PROP_CURSOR,
PROP_DISPLAY,
PROP_PARENT,
PROP_FRAME_CLOCK,
PROP_STATE,
PROP_MAPPED,
PROP_AUTOHIDE,
LAST_PROP
};
/* Global info */
static void gdk_surface_finalize (GObject *object);
static void gdk_surface_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gdk_surface_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void update_cursor (GdkDisplay *display,
GdkDevice *device);
static void gdk_surface_set_frame_clock (GdkSurface *surface,
GdkFrameClock *clock);
static guint signals[LAST_SIGNAL] = { 0 };
static GParamSpec *properties[LAST_PROP] = { NULL, };
G_DEFINE_ABSTRACT_TYPE (GdkSurface, gdk_surface, G_TYPE_OBJECT)
static gboolean
gdk_surface_real_beep (GdkSurface *surface)
{
return FALSE;
}
static GdkDisplay *
get_display_for_surface (GdkSurface *primary,
GdkSurface *secondary)
{
GdkDisplay *display = primary->display;
if (display)
return display;
display = secondary->display;
if (display)
return display;
g_warning ("no display for surface, using default");
return gdk_display_get_default ();
}
static GdkMonitor *
get_monitor_for_rect (GdkDisplay *display,
const GdkRectangle *rect)
{
gint biggest_area = G_MININT;
GdkMonitor *best_monitor = NULL;
GdkMonitor *monitor;
GdkRectangle workarea;
GdkRectangle intersection;
gint i;
for (i = 0; i < gdk_display_get_n_monitors (display); i++)
{
monitor = gdk_display_get_monitor (display, i);
gdk_monitor_get_workarea (monitor, &workarea);
if (gdk_rectangle_intersect (&workarea, rect, &intersection))
{
if (intersection.width * intersection.height > biggest_area)
{
biggest_area = intersection.width * intersection.height;
best_monitor = monitor;
}
}
}
return best_monitor;
}
static gint
get_anchor_x_sign (GdkGravity anchor)
{
switch (anchor)
{
case GDK_GRAVITY_STATIC:
case GDK_GRAVITY_NORTH_WEST:
case GDK_GRAVITY_WEST:
case GDK_GRAVITY_SOUTH_WEST:
return -1;
default:
case GDK_GRAVITY_NORTH:
case GDK_GRAVITY_CENTER:
case GDK_GRAVITY_SOUTH:
return 0;
case GDK_GRAVITY_NORTH_EAST:
case GDK_GRAVITY_EAST:
case GDK_GRAVITY_SOUTH_EAST:
return 1;
}
}
static gint
get_anchor_y_sign (GdkGravity anchor)
{
switch (anchor)
{
case GDK_GRAVITY_STATIC:
case GDK_GRAVITY_NORTH_WEST:
case GDK_GRAVITY_NORTH:
case GDK_GRAVITY_NORTH_EAST:
return -1;
default:
case GDK_GRAVITY_WEST:
case GDK_GRAVITY_CENTER:
case GDK_GRAVITY_EAST:
return 0;
case GDK_GRAVITY_SOUTH_WEST:
case GDK_GRAVITY_SOUTH:
case GDK_GRAVITY_SOUTH_EAST:
return 1;
}
}
static gint
maybe_flip_position (gint bounds_pos,
gint bounds_size,
gint rect_pos,
gint rect_size,
gint surface_size,
gint rect_sign,
gint surface_sign,
gint offset,
gboolean flip,
gboolean *flipped)
{
gint primary;
gint secondary;
*flipped = FALSE;
primary = rect_pos + (1 + rect_sign) * rect_size / 2 + offset - (1 + surface_sign) * surface_size / 2;
if (!flip || (primary >= bounds_pos && primary + surface_size <= bounds_pos + bounds_size))
return primary;
*flipped = TRUE;
secondary = rect_pos + (1 - rect_sign) * rect_size / 2 - offset - (1 - surface_sign) * surface_size / 2;
if (secondary >= bounds_pos && secondary + surface_size <= bounds_pos + bounds_size)
return secondary;
*flipped = FALSE;
return primary;
}
void
gdk_surface_move_to_rect_helper (GdkSurface *surface,
const GdkRectangle *rect,
GdkGravity rect_anchor,
GdkGravity surface_anchor,
GdkAnchorHints anchor_hints,
gint rect_anchor_dx,
gint rect_anchor_dy,
GdkSurfaceMovedToRect moved_to_rect)
{
GdkSurface *toplevel;
GdkDisplay *display;
GdkMonitor *monitor;
GdkRectangle bounds;
GdkRectangle root_rect = *rect;
GdkRectangle flipped_rect;
GdkRectangle final_rect;
gboolean flipped_x;
gboolean flipped_y;
int x, y;
/* This implementation only works for backends that
* can provide root coordinates via get_root_coords.
* Other backends need to implement move_to_rect.
*/
if (surface->surface_type == GDK_SURFACE_POPUP)
toplevel = surface->parent;
else
toplevel = surface->transient_for;
gdk_surface_get_root_coords (toplevel,
root_rect.x,
root_rect.y,
&root_rect.x,
&root_rect.y);
display = get_display_for_surface (surface, surface->transient_for);
monitor = get_monitor_for_rect (display, &root_rect);
gdk_monitor_get_workarea (monitor, &bounds);
flipped_rect.width = surface->width - surface->shadow_left - surface->shadow_right;
flipped_rect.height = surface->height - surface->shadow_top - surface->shadow_bottom;
flipped_rect.x = maybe_flip_position (bounds.x,
bounds.width,
root_rect.x,
root_rect.width,
flipped_rect.width,
get_anchor_x_sign (rect_anchor),
get_anchor_x_sign (surface_anchor),
rect_anchor_dx,
anchor_hints & GDK_ANCHOR_FLIP_X,
&flipped_x);
flipped_rect.y = maybe_flip_position (bounds.y,
bounds.height,
root_rect.y,
root_rect.height,
flipped_rect.height,
get_anchor_y_sign (rect_anchor),
get_anchor_y_sign (surface_anchor),
rect_anchor_dy,
anchor_hints & GDK_ANCHOR_FLIP_Y,
&flipped_y);
final_rect = flipped_rect;
if (anchor_hints & GDK_ANCHOR_SLIDE_X)
{
if (final_rect.x + final_rect.width > bounds.x + bounds.width)
final_rect.x = bounds.x + bounds.width - final_rect.width;
if (final_rect.x < bounds.x)
final_rect.x = bounds.x;
}
if (anchor_hints & GDK_ANCHOR_SLIDE_Y)
{
if (final_rect.y + final_rect.height > bounds.y + bounds.height)
final_rect.y = bounds.y + bounds.height - final_rect.height;
if (final_rect.y < bounds.y)
final_rect.y = bounds.y;
}
if (anchor_hints & GDK_ANCHOR_RESIZE_X)
{
if (final_rect.x < bounds.x)
{
final_rect.width -= bounds.x - final_rect.x;
final_rect.x = bounds.x;
}
if (final_rect.x + final_rect.width > bounds.x + bounds.width)
final_rect.width = bounds.x + bounds.width - final_rect.x;
}
if (anchor_hints & GDK_ANCHOR_RESIZE_Y)
{
if (final_rect.y < bounds.y)
{
final_rect.height -= bounds.y - final_rect.y;
final_rect.y = bounds.y;
}
if (final_rect.y + final_rect.height > bounds.y + bounds.height)
final_rect.height = bounds.y + bounds.height - final_rect.y;
}
flipped_rect.x -= surface->shadow_left;
flipped_rect.y -= surface->shadow_top;
flipped_rect.width += surface->shadow_left + surface->shadow_right;
flipped_rect.height += surface->shadow_top + surface->shadow_bottom;
final_rect.x -= surface->shadow_left;
final_rect.y -= surface->shadow_top;
final_rect.width += surface->shadow_left + surface->shadow_right;
final_rect.height += surface->shadow_top + surface->shadow_bottom;
gdk_surface_get_origin (toplevel, &x, &y);
final_rect.x -= x;
final_rect.y -= y;
flipped_rect.x -= x;
flipped_rect.y -= y;
moved_to_rect (surface, final_rect);
g_signal_emit_by_name (surface,
"moved-to-rect",
&flipped_rect,
&final_rect,
flipped_x,
flipped_y);
}
static void
gdk_surface_init (GdkSurface *surface)
{
/* 0-initialization is good for all other fields. */
surface->surface_type = GDK_SURFACE_TOPLEVEL;
surface->state = GDK_SURFACE_STATE_WITHDRAWN;
surface->fullscreen_mode = GDK_FULLSCREEN_ON_CURRENT_MONITOR;
surface->width = 1;
surface->height = 1;
surface->accept_focus = TRUE;
surface->focus_on_map = TRUE;
surface->alpha = 255;
surface->device_cursor = g_hash_table_new_full (NULL, NULL,
NULL, g_object_unref);
}
static void
gdk_surface_class_init (GdkSurfaceClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gdk_surface_finalize;
object_class->set_property = gdk_surface_set_property;
object_class->get_property = gdk_surface_get_property;
klass->beep = gdk_surface_real_beep;
/**
* GdkSurface:cursor:
*
* The mouse pointer for a #GdkSurface. See gdk_surface_set_cursor() and
* gdk_surface_get_cursor() for details.
*/
properties[PROP_CURSOR] =
g_param_spec_object ("cursor",
P_("Cursor"),
P_("Cursor"),
GDK_TYPE_CURSOR,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
/**
* GdkSurface:display:
*
* The #GdkDisplay connection of the surface. See gdk_surface_get_display()
* for details.
*/
properties[PROP_DISPLAY] =
g_param_spec_object ("display",
P_("Display"),
P_("Display"),
GDK_TYPE_DISPLAY,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
properties[PROP_PARENT] =
g_param_spec_object ("parent",
P_("Parent"),
P_("Parent surface"),
GDK_TYPE_SURFACE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
properties[PROP_FRAME_CLOCK] =
g_param_spec_object ("frame-clock",
P_("Frame Clock"),
P_("Frame Clock"),
GDK_TYPE_FRAME_CLOCK,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
properties[PROP_STATE] =
g_param_spec_flags ("state",
P_("State"),
P_("State"),
GDK_TYPE_SURFACE_STATE, GDK_SURFACE_STATE_WITHDRAWN,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
properties[PROP_MAPPED] =
g_param_spec_boolean ("mapped",
P_("Mapped"),
P_("Mapped"),
FALSE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
properties[PROP_AUTOHIDE] =
g_param_spec_boolean ("autohide",
P_("Autohide"),
P_("Whether to dismiss the surface on outside clicks"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
properties[PROP_SURFACE_TYPE] =
g_param_spec_enum ("surface-type",
P_("Surface type"),
P_("Surface type"),
GDK_TYPE_SURFACE_TYPE, GDK_SURFACE_TOPLEVEL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, LAST_PROP, properties);
/**
* GdkSurface::moved-to-rect:
* @surface: the #GdkSurface that moved
* @flipped_rect: (nullable): the position of @surface after any possible
* flipping or %NULL if the backend can't obtain it
* @final_rect: (nullable): the final position of @surface or %NULL if the
* backend can't obtain it
* @flipped_x: %TRUE if the anchors were flipped horizontally
* @flipped_y: %TRUE if the anchors were flipped vertically
*
* Emitted when the position of @surface is finalized after being moved to a
* destination rectangle.
*
* @surface might be flipped over the destination rectangle in order to keep
* it on-screen, in which case @flipped_x and @flipped_y will be set to %TRUE
* accordingly.
*
* @flipped_rect is the ideal position of @surface after any possible
* flipping, but before any possible sliding. @final_rect is @flipped_rect,
* but possibly translated in the case that flipping is still ineffective in
* keeping @surface on-screen.
* Stability: Private
*/
signals[MOVED_TO_RECT] =
g_signal_new (g_intern_static_string ("moved-to-rect"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
_gdk_marshal_VOID__POINTER_POINTER_BOOLEAN_BOOLEAN,
G_TYPE_NONE,
4,
G_TYPE_POINTER,
G_TYPE_POINTER,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN);
/**
* GdkSurface::size-changed:
* @surface: the #GdkSurface
* @width: the new width
* @height: the new height
*
* Emitted when the size of @surface is changed.
*/
signals[SIZE_CHANGED] =
g_signal_new (g_intern_static_string ("size-changed"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
NULL,
G_TYPE_NONE,
2,
G_TYPE_INT,
G_TYPE_INT);
/**
* GdkSurface::render:
* @surface: the #GdkSurface
* @region: the region that needs to be redrawn
*
* Emitted when part of the surface needs to be redrawn.
*
* Returns: %TRUE to indicate that the signal has been handled
*/
signals[RENDER] =
g_signal_new (g_intern_static_string ("render"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
0,
g_signal_accumulator_true_handled,
NULL,
_gdk_marshal_BOOLEAN__BOXED,
G_TYPE_BOOLEAN,
1,
CAIRO_GOBJECT_TYPE_REGION);
g_signal_set_va_marshaller (signals[RENDER],
G_OBJECT_CLASS_TYPE (object_class),
_gdk_marshal_BOOLEAN__BOXEDv);
/**
* GdkSurface::event:
* @surface: the #GdkSurface
* @event: an input event
*
* Emitted when GDK receives an input event for @surface.
*
* Returns: %TRUE to indicate that the event has been handled
*/
signals[EVENT] =
g_signal_new (g_intern_static_string ("event"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
0,
g_signal_accumulator_true_handled,
NULL,
_gdk_marshal_BOOLEAN__OBJECT,
G_TYPE_BOOLEAN,
1,
GDK_TYPE_EVENT);
g_signal_set_va_marshaller (signals[EVENT],
G_OBJECT_CLASS_TYPE (object_class),
_gdk_marshal_BOOLEAN__OBJECTv);
}
static void
seat_removed_cb (GdkDisplay *display,
GdkSeat *seat,
GdkSurface *surface)
{
GdkDevice *device = gdk_seat_get_pointer (seat);
surface->devices_inside = g_list_remove (surface->devices_inside, device);
g_hash_table_remove (surface->device_cursor, device);
}
static void
gdk_surface_finalize (GObject *object)
{
GdkSurface *surface = GDK_SURFACE (object);
g_signal_handlers_disconnect_by_func (surface->display,
seat_removed_cb, surface);
if (!GDK_SURFACE_DESTROYED (surface))
{
g_warning ("losing last reference to undestroyed surface");
_gdk_surface_destroy (surface, FALSE);
}
if (surface->input_shape)
cairo_region_destroy (surface->input_shape);
if (surface->cursor)
g_object_unref (surface->cursor);
if (surface->device_cursor)
g_hash_table_destroy (surface->device_cursor);
if (surface->devices_inside)
g_list_free (surface->devices_inside);
g_clear_object (&surface->display);
if (surface->opaque_region)
cairo_region_destroy (surface->opaque_region);
if (surface->parent)
surface->parent->children = g_list_remove (surface->parent->children, surface);
G_OBJECT_CLASS (gdk_surface_parent_class)->finalize (object);
}
static void
gdk_surface_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GdkSurface *surface = GDK_SURFACE (object);
switch (prop_id)
{
case PROP_CURSOR:
gdk_surface_set_cursor (surface, g_value_get_object (value));
break;
case PROP_DISPLAY:
surface->display = g_value_dup_object (value);
g_assert (surface->display != NULL);
g_signal_connect (surface->display, "seat-removed",
G_CALLBACK (seat_removed_cb), surface);
break;
case PROP_PARENT:
surface->parent = g_value_dup_object (value);
if (surface->parent != NULL)
surface->parent->children = g_list_prepend (surface->parent->children, surface);
break;
case PROP_FRAME_CLOCK:
gdk_surface_set_frame_clock (surface, GDK_FRAME_CLOCK (g_value_get_object (value)));
break;
case PROP_AUTOHIDE:
surface->autohide = g_value_get_boolean (value);
break;
case PROP_SURFACE_TYPE:
surface->surface_type = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gdk_surface_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GdkSurface *surface = GDK_SURFACE (object);
switch (prop_id)
{
case PROP_CURSOR:
g_value_set_object (value, gdk_surface_get_cursor (surface));
break;
case PROP_DISPLAY:
g_value_set_object (value, surface->display);
break;
case PROP_PARENT:
g_value_set_object (value, surface->parent);
break;
case PROP_FRAME_CLOCK:
g_value_set_object (value, surface->frame_clock);
break;
case PROP_STATE:
g_value_set_flags (value, surface->state);
break;
case PROP_MAPPED:
g_value_set_boolean (value, GDK_SURFACE_IS_MAPPED (surface));
break;
case PROP_AUTOHIDE:
g_value_set_boolean (value, surface->autohide);
break;
case PROP_SURFACE_TYPE:
g_value_set_enum (value, surface->surface_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
void
_gdk_surface_update_size (GdkSurface *surface)
{
GSList *l;
for (l = surface->draw_contexts; l; l = l->next)
gdk_draw_context_surface_resized (l->data);
}
static GdkSurface *
gdk_surface_new (GdkDisplay *display,
GdkSurfaceType surface_type,
GdkSurface *parent,
int x,
int y,
int width,
int height)
{
return gdk_display_create_surface (display,
surface_type,
parent,
x, y, width, height);
}
/**
* gdk_surface_new_toplevel: (constructor)
* @display: the display to create the surface on
* @width: width of new surface
* @height: height of new surface
*
* Creates a new toplevel surface.
*
* Returns: (transfer full): the new #GdkSurface
**/
GdkSurface *
gdk_surface_new_toplevel (GdkDisplay *display,
gint width,
gint height)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
return gdk_surface_new (display, GDK_SURFACE_TOPLEVEL,
NULL, 0, 0, width, height);
}
/**
* gdk_surface_new_temp: (constructor)
* @display: the display to create the surface on
* @position: position of the surface on screen
*
* Creates a new temporary surface.
* The surface will bypass surface management.
*
* Returns: (transfer full): the new #GdkSurface
**/
GdkSurface *
gdk_surface_new_temp (GdkDisplay *display,
const GdkRectangle *position)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_return_val_if_fail (position != NULL, NULL);
return gdk_surface_new (display, GDK_SURFACE_TEMP,
NULL,
position->x, position->y,
position->width, position->height);
}
/**
* gdk_surface_new_popup: (constructor)
* @display: the display to create the surface on
* @parent: the parent surface to attach the surface to
* @autohide: whether to hide the surface on outside clicks
*
* Create a new popup surface.
*
* The surface will be attached to @parent and can
* be positioned relative to it using
* gdk_surface_move_to_rect().
*
* Returns: (transfer full): a new #GdkSurface
*/
GdkSurface *
gdk_surface_new_popup (GdkDisplay *display,
GdkSurface *parent,
gboolean autohide)
{
GdkSurface *surface;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_return_val_if_fail (GDK_IS_SURFACE (parent), NULL);
surface = gdk_surface_new (display, GDK_SURFACE_POPUP,
parent, 0, 0, 100, 100);
surface->autohide = autohide;
return surface;
}
/**
* gdk_surface_get_parent:
* @surface: a #GtkSurface
*
* Returns the parent surface of a surface, or
* %NULL if the surface does not have a parent.
*
* Only popup surfaces have parents.
*
* Returns: (transfer none) (nullable): the parent of
* @surface, or %NULL
*/
GdkSurface *
gdk_surface_get_parent (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
return surface->parent;
}
static void
update_pointer_info_foreach (GdkDisplay *display,
GdkDevice *device,
GdkPointerSurfaceInfo *pointer_info,
gpointer user_data)
{
GdkSurface *surface = user_data;
if (pointer_info->surface_under_pointer == surface)
{
g_object_unref (pointer_info->surface_under_pointer);
pointer_info->surface_under_pointer = NULL;
}
}
static void
surface_remove_from_pointer_info (GdkSurface *surface,
GdkDisplay *display)
{
_gdk_display_pointer_info_foreach (display,
update_pointer_info_foreach,
surface);
}
/**
* _gdk_surface_destroy_hierarchy:
* @surface: a #GdkSurface
* @recursing_native: If %TRUE, then this is being called because a native parent
* was destroyed. This generally means that the call to the
* windowing system to destroy the surface can be omitted, since
* it will be destroyed as a result of the parent being destroyed.
* Unless @foreign_destroy.
* @foreign_destroy: If %TRUE, the surface or a parent was destroyed by some
* external agency. The surface has already been destroyed and no
* windowing system calls should be made. (This may never happen
* for some windowing systems.)
*
* Internal function to destroy a surface. Like gdk_surface_destroy(),
* but does not drop the reference count created by gdk_surface_new().
**/
static void
_gdk_surface_destroy_hierarchy (GdkSurface *surface,
gboolean foreign_destroy)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
GDK_SURFACE_GET_CLASS (surface)->destroy (surface, foreign_destroy);
if (surface->gl_paint_context)
{
/* Make sure to destroy if current */
g_object_run_dispose (G_OBJECT (surface->gl_paint_context));
g_object_unref (surface->gl_paint_context);
surface->gl_paint_context = NULL;
}
if (surface->frame_clock)
{
if (surface->parent == NULL)
g_object_run_dispose (G_OBJECT (surface->frame_clock));
gdk_surface_set_frame_clock (surface, NULL);
}
_gdk_surface_clear_update_area (surface);
surface->state |= GDK_SURFACE_STATE_WITHDRAWN;
surface->destroyed = TRUE;
surface_remove_from_pointer_info (surface, surface->display);
g_object_notify_by_pspec (G_OBJECT (surface), properties[PROP_STATE]);
g_object_notify_by_pspec (G_OBJECT (surface), properties[PROP_MAPPED]);
}
/**
* _gdk_surface_destroy:
* @surface: a #GdkSurface
* @foreign_destroy: If %TRUE, the surface or a parent was destroyed by some
* external agency. The surface has already been destroyed and no
* windowing system calls should be made. (This may never happen
* for some windowing systems.)
*
* Internal function to destroy a surface. Like gdk_surface_destroy(),
* but does not drop the reference count created by gdk_surface_new().
**/
void
_gdk_surface_destroy (GdkSurface *surface,
gboolean foreign_destroy)
{
_gdk_surface_destroy_hierarchy (surface, foreign_destroy);
}
/**
* gdk_surface_destroy:
* @surface: a #GdkSurface
*
* Destroys the window system resources associated with @surface and decrements @surface's
* reference count. The window system resources for all children of @surface are also
* destroyed, but the children’s reference counts are not decremented.
*
* Note that a surface will not be destroyed automatically when its reference count
* reaches zero. You must call this function yourself before that happens.
*
**/
void
gdk_surface_destroy (GdkSurface *surface)
{
_gdk_surface_destroy_hierarchy (surface, FALSE);
g_object_unref (surface);
}
void
gdk_surface_set_widget (GdkSurface *surface,
gpointer widget)
{
surface->widget = widget;
}
gpointer
gdk_surface_get_widget (GdkSurface *surface)
{
return surface->widget;
}
/**
* gdk_surface_get_surface_type:
* @surface: a #GdkSurface
*
* Gets the type of the surface. See #GdkSurfaceType.
*
* Returns: type of surface
**/
GdkSurfaceType
gdk_surface_get_surface_type (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), (GdkSurfaceType) -1);
return GDK_SURFACE_TYPE (surface);
}
/**
* gdk_surface_get_display:
* @surface: a #GdkSurface
*
* Gets the #GdkDisplay associated with a #GdkSurface.
*
* Returns: (transfer none): the #GdkDisplay associated with @surface
**/
GdkDisplay *
gdk_surface_get_display (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
return surface->display;
}
/**
* gdk_surface_is_destroyed:
* @surface: a #GdkSurface
*
* Check to see if a surface is destroyed..
*
* Returns: %TRUE if the surface is destroyed
**/
gboolean
gdk_surface_is_destroyed (GdkSurface *surface)
{
return GDK_SURFACE_DESTROYED (surface);
}
/**
* gdk_surface_get_position:
* @surface: a #GdkSurface
* @x: (out): X coordinate of surface
* @y: (out): Y coordinate of surface
*
* Obtains the position of the surface relative to its parent.
**/
void
gdk_surface_get_position (GdkSurface *surface,
int *x,
int *y)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (surface->parent)
{
*x = surface->x;
*y = surface->y;
}
else
{
*x = 0;
*y = 0;
}
}
/**
* gdk_surface_is_visible:
* @surface: a #GdkSurface
*
* Checks whether the surface has been mapped (with gdk_surface_show() or
* gdk_surface_show_unraised()).
*
* Returns: %TRUE if the surface is mapped
**/
gboolean
gdk_surface_is_visible (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
return GDK_SURFACE_IS_MAPPED (surface);
}
/**
* gdk_surface_is_viewable:
* @surface: a #GdkSurface
*
* Check if the surface and all ancestors of the surface are
* mapped. (This is not necessarily "viewable" in the X sense, since
* we only check as far as we have GDK surface parents, not to the root
* surface.)
*
* Returns: %TRUE if the surface is viewable
**/
gboolean
gdk_surface_is_viewable (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
if (surface->destroyed)
return FALSE;
return surface->viewable;
}
/**
* gdk_surface_get_state:
* @surface: a #GdkSurface
*
* Gets the bitwise OR of the currently active surface state flags,
* from the #GdkSurfaceState enumeration.
*
* Returns: surface state bitfield
**/
GdkSurfaceState
gdk_surface_get_state (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
return surface->state;
}
GdkGLContext *
gdk_surface_get_shared_data_gl_context (GdkSurface *surface)
{
static int in_shared_data_creation;
GdkDisplay *display;
GdkGLContext *context;
if (in_shared_data_creation)
return NULL;
in_shared_data_creation = 1;
display = gdk_surface_get_display (surface);
context = (GdkGLContext *)g_object_get_data (G_OBJECT (display), "gdk-gl-shared-data-context");
if (context == NULL)
{
GError *error = NULL;
context = GDK_SURFACE_GET_CLASS (surface)->create_gl_context (surface, FALSE, NULL, &error);
if (context == NULL)
{
g_warning ("Failed to create shared context: %s", error->message);
g_clear_error (&error);
}
gdk_gl_context_realize (context, &error);
if (context == NULL)
{
g_warning ("Failed to realize shared context: %s", error->message);
g_clear_error (&error);
}
g_object_set_data (G_OBJECT (display), "gdk-gl-shared-data-context", context);
}
in_shared_data_creation = 0;
return context;
}
GdkGLContext *
gdk_surface_get_paint_gl_context (GdkSurface *surface,
GError **error)
{
GError *internal_error = NULL;
if (GDK_DISPLAY_DEBUG_CHECK (surface->display, GL_DISABLE))
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("GL support disabled via GDK_DEBUG"));
return NULL;
}
if (surface->gl_paint_context == NULL)
{
GdkSurfaceClass *class = GDK_SURFACE_GET_CLASS (surface);
if (class->create_gl_context == NULL)
{
g_set_error_literal (error, GDK_GL_ERROR, GDK_GL_ERROR_NOT_AVAILABLE,
_("The current backend does not support OpenGL"));
return NULL;
}
surface->gl_paint_context =
class->create_gl_context (surface, TRUE, NULL, &internal_error);
}
if (internal_error != NULL)
{
g_propagate_error (error, internal_error);
g_clear_object (&(surface->gl_paint_context));
return NULL;
}
gdk_gl_context_realize (surface->gl_paint_context, &internal_error);
if (internal_error != NULL)
{
g_propagate_error (error, internal_error);
g_clear_object (&(surface->gl_paint_context));
return NULL;
}
return surface->gl_paint_context;
}
/**
* gdk_surface_create_gl_context:
* @surface: a #GdkSurface
* @error: return location for an error
*
* Creates a new #GdkGLContext matching the
* framebuffer format to the visual of the #GdkSurface. The context
* is disconnected from any particular surface or surface.
*
* If the creation of the #GdkGLContext failed, @error will be set.
*
* Before using the returned #GdkGLContext, you will need to
* call gdk_gl_context_make_current() or gdk_gl_context_realize().
*
* Returns: (transfer full): the newly created #GdkGLContext, or
* %NULL on error
**/
GdkGLContext *
gdk_surface_create_gl_context (GdkSurface *surface,
GError **error)
{
GdkGLContext *paint_context;
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
paint_context = gdk_surface_get_paint_gl_context (surface, error);
if (paint_context == NULL)
return NULL;
return GDK_SURFACE_GET_CLASS (surface)->create_gl_context (surface,
FALSE,
paint_context,
error);
}
/**
* gdk_surface_create_cairo_context:
* @surface: a #GdkSurface
*
* Creates a new #GdkCairoContext for rendering on @surface.
*
* Returns: (transfer full): the newly created #GdkCairoContext
**/
GdkCairoContext *
gdk_surface_create_cairo_context (GdkSurface *surface)
{
GdkDisplay *display;
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
display = surface->display;
return g_object_new (GDK_DISPLAY_GET_CLASS (display)->cairo_context_type,
"surface", surface,
NULL);
}
/**
* gdk_surface_create_vulkan_context:
* @surface: a #GdkSurface
* @error: return location for an error
*
* Creates a new #GdkVulkanContext for rendering on @surface.
*
* If the creation of the #GdkVulkanContext failed, @error will be set.
*
* Returns: (transfer full): the newly created #GdkVulkanContext, or
* %NULL on error
**/
GdkVulkanContext *
gdk_surface_create_vulkan_context (GdkSurface *surface,
GError **error)
{
GdkDisplay *display;
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (GDK_DISPLAY_DEBUG_CHECK (surface->display, VULKAN_DISABLE))
{
g_set_error_literal (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE,
_("Vulkan support disabled via GDK_DEBUG"));
return NULL;
}
display = surface->display;
if (GDK_DISPLAY_GET_CLASS (display)->vk_extension_name == NULL)
{
g_set_error (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_UNSUPPORTED,
"The %s backend has no Vulkan support.", G_OBJECT_TYPE_NAME (display));
return FALSE;
}
return g_initable_new (GDK_DISPLAY_GET_CLASS (display)->vk_context_type,
NULL,
error,
"surface", surface,
NULL);
}
/* Code for dirty-region queueing
*/
static GSList *update_surfaces = NULL;
static void
gdk_surface_add_update_surface (GdkSurface *surface)
{
GSList *tmp;
/* Check whether "surface" is already in "update_surfaces" list.
* It could be added during execution of gtk_widget_destroy() when
* setting focus widget to NULL and redrawing old focus widget.
* See bug 711552.
*/
tmp = g_slist_find (update_surfaces, surface);
if (tmp != NULL)
return;
update_surfaces = g_slist_prepend (update_surfaces, g_object_ref (surface));
}
static void
gdk_surface_remove_update_surface (GdkSurface *surface)
{
GSList *link;
link = g_slist_find (update_surfaces, surface);
if (link != NULL)
{
update_surfaces = g_slist_delete_link (update_surfaces, link);
g_object_unref (surface);
}
}
static gboolean
gdk_surface_is_toplevel_frozen (GdkSurface *surface)
{
return surface->update_and_descendants_freeze_count > 0;
}
static void
gdk_surface_schedule_update (GdkSurface *surface)
{
GdkFrameClock *frame_clock;
g_return_if_fail (surface);
if (surface->update_freeze_count ||
gdk_surface_is_toplevel_frozen (surface))
{
surface->pending_schedule_update = TRUE;
return;
}
/* If there's no frame clock (a foreign surface), then the invalid
* region will just stick around unless gdk_surface_process_updates()
* is called. */
frame_clock = gdk_surface_get_frame_clock (surface);
if (frame_clock)
gdk_frame_clock_request_phase (gdk_surface_get_frame_clock (surface),
GDK_FRAME_CLOCK_PHASE_PAINT);
}
static void
gdk_surface_process_updates_internal (GdkSurface *surface)
{
/* Ensure the surface lives while updating it */
g_object_ref (surface);
surface->in_update = TRUE;
/* If an update got queued during update processing, we can get a
* surface in the update queue that has an empty update_area.
* just ignore it.
*/
if (surface->update_area)
{
g_assert (surface->active_update_area == NULL); /* No reentrancy */
surface->active_update_area = surface->update_area;
surface->update_area = NULL;
if (gdk_surface_is_viewable (surface))
{
cairo_region_t *expose_region;
gboolean handled;
expose_region = cairo_region_copy (surface->active_update_area);
g_signal_emit (surface, signals[RENDER], 0, expose_region, &handled);
cairo_region_destroy (expose_region);
}
cairo_region_destroy (surface->active_update_area);
surface->active_update_area = NULL;
}
surface->in_update = FALSE;
g_object_unref (surface);
}
static void
gdk_surface_paint_on_clock (GdkFrameClock *clock,
void *data)
{
GdkSurface *surface = GDK_SURFACE (data);
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
g_object_ref (surface);
if (surface->update_area &&
!surface->update_freeze_count &&
!gdk_surface_is_toplevel_frozen (surface) &&
/* Don't recurse into process_updates_internal, we'll
* do the update later when idle instead. */
!surface->in_update)
{
gdk_surface_process_updates_internal (surface);
gdk_surface_remove_update_surface (surface);
}
g_object_unref (surface);
}
/**
* gdk_surface_invalidate_rect:
* @surface: a #GdkSurface
* @rect: (allow-none): rectangle to invalidate or %NULL to invalidate the whole
* surface
*
* A convenience wrapper around gdk_surface_invalidate_region() which
* invalidates a rectangular region. See
* gdk_surface_invalidate_region() for details.
**/
void
gdk_surface_invalidate_rect (GdkSurface *surface,
const GdkRectangle *rect)
{
GdkRectangle surface_rect;
cairo_region_t *region;
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
if (!surface->viewable)
return;
if (!rect)
{
surface_rect.x = 0;
surface_rect.y = 0;
surface_rect.width = surface->width;
surface_rect.height = surface->height;
rect = &surface_rect;
}
region = cairo_region_create_rectangle (rect);
gdk_surface_invalidate_region (surface, region);
cairo_region_destroy (region);
}
static void
impl_surface_add_update_area (GdkSurface *impl_surface,
cairo_region_t *region)
{
if (impl_surface->update_area)
cairo_region_union (impl_surface->update_area, region);
else
{
gdk_surface_add_update_surface (impl_surface);
impl_surface->update_area = cairo_region_copy (region);
gdk_surface_schedule_update (impl_surface);
}
}
/**
* gdk_surface_queue_expose:
* @surface: a #GdkSurface
*
* Forces an expose event for @surface to be scheduled.
*
* If the invalid area of @surface is empty, an expose event will
* still be emitted. Its invalid region will be empty.
*
* This function is useful for implementations that track invalid
* regions on their own.
**/
void
gdk_surface_queue_expose (GdkSurface *surface)
{
cairo_region_t *region;
g_return_if_fail (GDK_IS_SURFACE (surface));
region = cairo_region_create ();
impl_surface_add_update_area (surface, region);
cairo_region_destroy (region);
}
/**
* gdk_surface_invalidate_region:
* @surface: a #GdkSurface
* @region: a #cairo_region_t
*
* Adds @region to the update area for @surface. The update area is the
* region that needs to be redrawn, or “dirty region.”
*
* GDK will process all updates whenever the frame clock schedules a redraw,
* so there’s no need to do forces redraws manually, you just need to
* invalidate regions that you know should be redrawn.
**/
void
gdk_surface_invalidate_region (GdkSurface *surface,
const cairo_region_t *region)
{
cairo_region_t *visible_region;
cairo_rectangle_int_t r;
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
if (!surface->viewable || cairo_region_is_empty (region))
return;
r.x = 0;
r.y = 0;
r.width = surface->width;
r.height = surface->height;
visible_region = cairo_region_copy (region);
cairo_region_intersect_rectangle (visible_region, &r);
impl_surface_add_update_area (surface, visible_region);
cairo_region_destroy (visible_region);
}
/**
* _gdk_surface_clear_update_area:
* @surface: a #GdkSurface.
*
* Internal function to clear the update area for a surface. This
* is called when the surface is hidden or destroyed.
**/
void
_gdk_surface_clear_update_area (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (surface->update_area)
{
gdk_surface_remove_update_surface (surface);
cairo_region_destroy (surface->update_area);
surface->update_area = NULL;
}
}
/**
* gdk_surface_freeze_updates:
* @surface: a #GdkSurface
*
* Temporarily freezes a surface such that it won’t receive expose
* events. The surface will begin receiving expose events again when
* gdk_surface_thaw_updates() is called. If gdk_surface_freeze_updates()
* has been called more than once, gdk_surface_thaw_updates() must be called
* an equal number of times to begin processing exposes.
**/
void
gdk_surface_freeze_updates (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
surface->update_freeze_count++;
if (surface->update_freeze_count == 1)
_gdk_frame_clock_uninhibit_freeze (surface->frame_clock);
}
/**
* gdk_surface_thaw_updates:
* @surface: a #GdkSurface
*
* Thaws a surface frozen with gdk_surface_freeze_updates(). Note that this
* will not necessarily schedule updates if the surface freeze count reaches
* zero.
**/
void
gdk_surface_thaw_updates (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (surface->update_freeze_count > 0);
if (--surface->update_freeze_count == 0)
{
_gdk_frame_clock_inhibit_freeze (surface->frame_clock);
if (surface->pending_schedule_update)
{
surface->pending_schedule_update = FALSE;
gdk_surface_schedule_update (surface);
}
}
}
void
gdk_surface_freeze_toplevel_updates (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
surface->update_and_descendants_freeze_count++;
gdk_surface_freeze_updates (surface);
}
void
gdk_surface_thaw_toplevel_updates (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (surface->update_and_descendants_freeze_count > 0);
surface->update_and_descendants_freeze_count--;
gdk_surface_schedule_update (surface);
gdk_surface_thaw_updates (surface);
}
/**
* gdk_surface_constrain_size:
* @geometry: a #GdkGeometry structure
* @flags: a mask indicating what portions of @geometry are set
* @width: desired width of surface
* @height: desired height of the surface
* @new_width: (out): location to store resulting width
* @new_height: (out): location to store resulting height
*
* Constrains a desired width and height according to a
* set of geometry hints (such as minimum and maximum size).
*/
void
gdk_surface_constrain_size (GdkGeometry *geometry,
GdkSurfaceHints flags,
gint width,
gint height,
gint *new_width,
gint *new_height)
{
/* This routine is partially borrowed from fvwm.
*
* Copyright 1993, Robert Nation
* You may use this code for any purpose, as long as the original
* copyright remains in the source code and all documentation
*
* which in turn borrows parts of the algorithm from uwm
*/
gint min_width = 0;
gint min_height = 0;
gint base_width = 0;
gint base_height = 0;
gint xinc = 1;
gint yinc = 1;
gint max_width = G_MAXINT;
gint max_height = G_MAXINT;
#define FLOOR(value, base) ( ((gint) ((value) / (base))) * (base) )
if ((flags & GDK_HINT_BASE_SIZE) && (flags & GDK_HINT_MIN_SIZE))
{
base_width = geometry->base_width;
base_height = geometry->base_height;
min_width = geometry->min_width;
min_height = geometry->min_height;
}
else if (flags & GDK_HINT_BASE_SIZE)
{
base_width = geometry->base_width;
base_height = geometry->base_height;
min_width = geometry->base_width;
min_height = geometry->base_height;
}
else if (flags & GDK_HINT_MIN_SIZE)
{
base_width = geometry->min_width;
base_height = geometry->min_height;
min_width = geometry->min_width;
min_height = geometry->min_height;
}
if (flags & GDK_HINT_MAX_SIZE)
{
max_width = geometry->max_width ;
max_height = geometry->max_height;
}
if (flags & GDK_HINT_RESIZE_INC)
{
xinc = MAX (xinc, geometry->width_inc);
yinc = MAX (yinc, geometry->height_inc);
}
/* clamp width and height to min and max values
*/
width = CLAMP (width, min_width, max_width);
height = CLAMP (height, min_height, max_height);
/* shrink to base + N * inc
*/
width = base_width + FLOOR (width - base_width, xinc);
height = base_height + FLOOR (height - base_height, yinc);
/* constrain aspect ratio, according to:
*
* width
* min_aspect <= -------- <= max_aspect
* height
*/
if (flags & GDK_HINT_ASPECT &&
geometry->min_aspect > 0 &&
geometry->max_aspect > 0)
{
gint delta;
if (geometry->min_aspect * height > width)
{
delta = FLOOR (height - width / geometry->min_aspect, yinc);
if (height - delta >= min_height)
height -= delta;
else
{
delta = FLOOR (height * geometry->min_aspect - width, xinc);
if (width + delta <= max_width)
width += delta;
}
}
if (geometry->max_aspect * height < width)
{
delta = FLOOR (width - height * geometry->max_aspect, xinc);
if (width - delta >= min_width)
width -= delta;
else
{
delta = FLOOR (width / geometry->max_aspect - height, yinc);
if (height + delta <= max_height)
height += delta;
}
}
}
#undef FLOOR
*new_width = width;
*new_height = height;
}
/**
* gdk_surface_get_device_position:
* @surface: a #GdkSurface.
* @device: pointer #GdkDevice to query to.
* @x: (out) (allow-none): return location for the X coordinate of @device, or %NULL.
* @y: (out) (allow-none): return location for the Y coordinate of @device, or %NULL.
* @mask: (out) (allow-none): return location for the modifier mask, or %NULL.
*
* Obtains the current device position in doubles and modifier state.
* The position is given in coordinates relative to the upper left
* corner of @surface.
**/
void
gdk_surface_get_device_position (GdkSurface *surface,
GdkDevice *device,
double *x,
double *y,
GdkModifierType *mask)
{
gdouble tmp_x, tmp_y;
GdkModifierType tmp_mask;
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (GDK_IS_DEVICE (device));
g_return_if_fail (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD);
tmp_x = tmp_y = 0;
tmp_mask = 0;
GDK_SURFACE_GET_CLASS (surface)->get_device_state (surface,
device,
&tmp_x, &tmp_y,
&tmp_mask);
if (x)
*x = tmp_x;
if (y)
*y = tmp_y;
if (mask)
*mask = tmp_mask;
}
static void
gdk_surface_raise_internal (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->raise (surface);
}
/* Returns TRUE If the native surface was mapped or unmapped */
static gboolean
set_viewable (GdkSurface *w,
gboolean val)
{
if (w->viewable == val)
return FALSE;
w->viewable = val;
return FALSE;
}
gboolean
_gdk_surface_update_viewable (GdkSurface *surface)
{
return set_viewable (surface, GDK_SURFACE_IS_MAPPED (surface));
}
static void
gdk_surface_show_internal (GdkSurface *surface, gboolean raise)
{
gboolean was_mapped;
gboolean did_show;
g_return_if_fail (GDK_IS_SURFACE (surface));
if (surface->destroyed)
return;
was_mapped = GDK_SURFACE_IS_MAPPED (surface);
if (raise)
gdk_surface_raise_internal (surface);
if (!was_mapped)
gdk_synthesize_surface_state (surface, GDK_SURFACE_STATE_WITHDRAWN, 0);
did_show = _gdk_surface_update_viewable (surface);
GDK_SURFACE_GET_CLASS (surface)->show (surface, !did_show ? was_mapped : TRUE);
if (!was_mapped)
{
if (gdk_surface_is_viewable (surface))
gdk_surface_invalidate_rect (surface, NULL);
}
}
/**
* gdk_surface_show_unraised:
* @surface: a #GdkSurface
*
* Shows a #GdkSurface onscreen, but does not modify its stacking
* order. In contrast, gdk_surface_show() will raise the surface
* to the top of the surface stack.
*
* On the X11 platform, in Xlib terms, this function calls
* XMapWindow() (it also updates some internal GDK state, which means
* that you can’t really use XMapWindow() directly on a GDK surface).
*/
void
gdk_surface_show_unraised (GdkSurface *surface)
{
gdk_surface_show_internal (surface, FALSE);
}
/**
* gdk_surface_raise:
* @surface: a #GdkSurface
*
* Raises @surface to the top of the Z-order (stacking order), so that
* other surfaces with the same parent surface appear below @surface.
* This is true whether or not the surfaces are visible.
*
* If @surface is a toplevel, the window manager may choose to deny the
* request to move the surface in the Z-order, gdk_surface_raise() only
* requests the restack, does not guarantee it.
*/
void
gdk_surface_raise (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (surface->destroyed)
return;
gdk_surface_raise_internal (surface);
}
static void
gdk_surface_lower_internal (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->lower (surface);
}
/**
* gdk_surface_lower:
* @surface: a #GdkSurface
*
* Lowers @surface to the bottom of the Z-order (stacking order), so that
* other surfaces with the same parent surface appear above @surface.
* This is true whether or not the other surfaces are visible.
*
* If @surface is a toplevel, the window manager may choose to deny the
* request to move the surface in the Z-order, gdk_surface_lower() only
* requests the restack, does not guarantee it.
*
* Note that gdk_surface_show() raises the surface again, so don’t call this
* function before gdk_surface_show(). (Try gdk_surface_show_unraised().)
*/
void
gdk_surface_lower (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (surface->destroyed)
return;
/* Keep children in (reverse) stacking order */
gdk_surface_lower_internal (surface);
}
/**
* gdk_surface_restack:
* @surface: a #GdkSurface
* @sibling: (allow-none): a #GdkSurface that is a sibling of @surface, or %NULL
* @above: a boolean
*
* Changes the position of @surface in the Z-order (stacking order), so that
* it is above @sibling (if @above is %TRUE) or below @sibling (if @above is
* %FALSE).
*
* If @sibling is %NULL, then this either raises (if @above is %TRUE) or
* lowers the surface.
*
* If @surface is a toplevel, the window manager may choose to deny the
* request to move the surface in the Z-order, gdk_surface_restack() only
* requests the restack, does not guarantee it.
*/
void
gdk_surface_restack (GdkSurface *surface,
GdkSurface *sibling,
gboolean above)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (sibling == NULL || GDK_IS_SURFACE (sibling));
if (surface->destroyed)
return;
if (sibling == NULL)
{
if (above)
gdk_surface_raise (surface);
else
gdk_surface_lower (surface);
return;
}
GDK_SURFACE_GET_CLASS (surface)->restack_toplevel (surface, sibling, above);
}
static void
grab_prepare_func (GdkSeat *seat,
GdkSurface *surface,
gpointer data)
{
gdk_surface_show_internal (surface, TRUE);
}
/**
* gdk_surface_show:
* @surface: a #GdkSurface
*
* Like gdk_surface_show_unraised(), but also raises the surface to the
* top of the surface stack (moves the surface to the front of the
* Z-order).
*
* This function maps a surface so it’s visible onscreen. Its opposite
* is gdk_surface_hide().
*
* When implementing a #GtkWidget, you should call this function on the widget's
* #GdkSurface as part of the “map” method.
*/
void
gdk_surface_show (GdkSurface *surface)
{
if (surface->autohide)
{
gdk_seat_grab (gdk_display_get_default_seat (surface->display),
surface,
GDK_SEAT_CAPABILITY_ALL,
TRUE,
NULL, NULL,
grab_prepare_func, NULL);
}
else
{
gdk_surface_show_internal (surface, TRUE);
}
}
/**
* gdk_surface_hide:
* @surface: a #GdkSurface
*
* For toplevel surfaces, withdraws them, so they will no longer be
* known to the window manager; for all surfaces, unmaps them, so
* they won’t be displayed. Normally done automatically as
* part of gtk_widget_hide().
*/
void
gdk_surface_hide (GdkSurface *surface)
{
gboolean was_mapped;
g_return_if_fail (GDK_IS_SURFACE (surface));
if (surface->destroyed)
return;
was_mapped = GDK_SURFACE_IS_MAPPED (surface);
if (GDK_SURFACE_IS_MAPPED (surface))
gdk_synthesize_surface_state (surface, 0, GDK_SURFACE_STATE_WITHDRAWN);
if (was_mapped)
{
GdkDisplay *display;
GdkSeat *seat;
GList *devices, *d;
/* May need to break grabs on children */
display = surface->display;
seat = gdk_display_get_default_seat (display);
devices = gdk_seat_get_slaves (seat, GDK_SEAT_CAPABILITY_ALL);
devices = g_list_prepend (devices, gdk_seat_get_keyboard (seat));
devices = g_list_prepend (devices, gdk_seat_get_pointer (seat));
for (d = devices; d; d = d->next)
{
GdkDevice *device = d->data;
if (_gdk_display_end_device_grab (display,
device,
_gdk_display_get_next_serial (display),
surface,
TRUE))
{
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
gdk_device_ungrab (device, GDK_CURRENT_TIME);
G_GNUC_END_IGNORE_DEPRECATIONS
}
}
g_list_free (devices);
}
GDK_SURFACE_GET_CLASS (surface)->hide (surface);
}
/**
* gdk_surface_resize:
* @surface: a #GdkSurface
* @width: new width of the surface
* @height: new height of the surface
*
* Resizes @surface; for toplevel surfaces, asks the window manager to resize
* the surface. The window manager may not allow the resize. When using GTK,
* use gtk_window_resize() instead of this low-level GDK function.
*
* Surfaces may not be resized below 1x1.
*/
void
gdk_surface_resize (GdkSurface *surface,
gint width,
gint height)
{
GDK_SURFACE_GET_CLASS (surface)->toplevel_resize (surface, width, height);
}
/**
* gdk_surface_move_to_rect:
* @surface: the #GdkSurface to move
* @rect: (not nullable): the destination #GdkRectangle to align @surface with
* @rect_anchor: the point on @rect to align with @surface's anchor point
* @surface_anchor: the point on @surface to align with @rect's anchor point
* @anchor_hints: positioning hints to use when limited on space
* @rect_anchor_dx: horizontal offset to shift @surface, i.e. @rect's anchor
* point
* @rect_anchor_dy: vertical offset to shift @surface, i.e. @rect's anchor point
*
* Moves @surface to @rect, aligning their anchor points.
*
* @rect is relative to the top-left corner of the surface that @surface is
* transient for. @rect_anchor and @surface_anchor determine anchor points on
* @rect and @surface to pin together. @rect's anchor point can optionally be
* offset by @rect_anchor_dx and @rect_anchor_dy, which is equivalent to
* offsetting the position of @surface.
*
* @anchor_hints determines how @surface will be moved if the anchor points cause
* it to move off-screen. For example, %GDK_ANCHOR_FLIP_X will replace
* %GDK_GRAVITY_NORTH_WEST with %GDK_GRAVITY_NORTH_EAST and vice versa if
* @surface extends beyond the left or right edges of the monitor.
*
* Connect to the #GdkSurface::moved-to-rect signal to find out how it was
* actually positioned.
*/
void
gdk_surface_move_to_rect (GdkSurface *surface,
const GdkRectangle *rect,
GdkGravity rect_anchor,
GdkGravity surface_anchor,
GdkAnchorHints anchor_hints,
gint rect_anchor_dx,
gint rect_anchor_dy)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (surface->parent || surface->transient_for);
g_return_if_fail (rect);
GDK_SURFACE_GET_CLASS (surface)->move_to_rect (surface,
rect,
rect_anchor,
surface_anchor,
anchor_hints,
rect_anchor_dx,
rect_anchor_dy);
}
static void
gdk_surface_set_cursor_internal (GdkSurface *surface,
GdkDevice *device,
GdkCursor *cursor)
{
GdkPointerSurfaceInfo *pointer_info;
if (GDK_SURFACE_DESTROYED (surface))
return;
g_assert (surface->display == gdk_device_get_display (device));
pointer_info = _gdk_display_get_pointer_info (surface->display, device);
if (surface == pointer_info->surface_under_pointer)
update_cursor (surface->display, device);
}
/**
* gdk_surface_get_cursor:
* @surface: a #GdkSurface
*
* Retrieves a #GdkCursor pointer for the cursor currently set on the
* specified #GdkSurface, or %NULL. If the return value is %NULL then
* there is no custom cursor set on the specified surface, and it is
* using the cursor for its parent surface.
*
* Returns: (nullable) (transfer none): a #GdkCursor, or %NULL. The
* returned object is owned by the #GdkSurface and should not be
* unreferenced directly. Use gdk_surface_set_cursor() to unset the
* cursor of the surface
*/
GdkCursor *
gdk_surface_get_cursor (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
return surface->cursor;
}
/**
* gdk_surface_set_cursor:
* @surface: a #GdkSurface
* @cursor: (allow-none): a cursor
*
* Sets the default mouse pointer for a #GdkSurface.
*
* Note that @cursor must be for the same display as @surface.
*
* Use gdk_cursor_new_from_name() or gdk_cursor_new_from_texture() to
* create the cursor. To make the cursor invisible, use %GDK_BLANK_CURSOR.
* Passing %NULL for the @cursor argument to gdk_surface_set_cursor() means
* that @surface will use the cursor of its parent surface. Most surfaces
* should use this default.
*/
void
gdk_surface_set_cursor (GdkSurface *surface,
GdkCursor *cursor)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (surface->cursor)
{
g_object_unref (surface->cursor);
surface->cursor = NULL;
}
if (!GDK_SURFACE_DESTROYED (surface))
{
GdkDevice *device;
GList *seats, *s;
if (cursor)
surface->cursor = g_object_ref (cursor);
seats = gdk_display_list_seats (surface->display);
for (s = seats; s; s = s->next)
{
GList *devices, *d;
device = gdk_seat_get_pointer (s->data);
gdk_surface_set_cursor_internal (surface, device, surface->cursor);
devices = gdk_seat_get_slaves (s->data, GDK_SEAT_CAPABILITY_TABLET_STYLUS);
for (d = devices; d; d = d->next)
{
device = gdk_device_get_associated_device (d->data);
gdk_surface_set_cursor_internal (surface, device, surface->cursor);
}
g_list_free (devices);
}
g_list_free (seats);
g_object_notify_by_pspec (G_OBJECT (surface), properties[PROP_CURSOR]);
}
}
/**
* gdk_surface_get_device_cursor:
* @surface: a #GdkSurface.
* @device: a master, pointer #GdkDevice.
*
* Retrieves a #GdkCursor pointer for the @device currently set on the
* specified #GdkSurface, or %NULL. If the return value is %NULL then
* there is no custom cursor set on the specified surface, and it is
* using the cursor for its parent surface.
*
* Returns: (nullable) (transfer none): a #GdkCursor, or %NULL. The
* returned object is owned by the #GdkSurface and should not be
* unreferenced directly. Use gdk_surface_set_cursor() to unset the
* cursor of the surface
**/
GdkCursor *
gdk_surface_get_device_cursor (GdkSurface *surface,
GdkDevice *device)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
g_return_val_if_fail (GDK_IS_DEVICE (device), NULL);
g_return_val_if_fail (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD, NULL);
g_return_val_if_fail (gdk_device_get_device_type (device) == GDK_DEVICE_TYPE_MASTER, NULL);
return g_hash_table_lookup (surface->device_cursor, device);
}
/**
* gdk_surface_set_device_cursor:
* @surface: a #GdkSurface
* @device: a master, pointer #GdkDevice
* @cursor: a #GdkCursor
*
* Sets a specific #GdkCursor for a given device when it gets inside @surface.
* Use gdk_cursor_new_fromm_name() or gdk_cursor_new_from_texture() to create
* the cursor. To make the cursor invisible, use %GDK_BLANK_CURSOR. Passing
* %NULL for the @cursor argument to gdk_surface_set_cursor() means that
* @surface will use the cursor of its parent surface. Most surfaces should
* use this default.
**/
void
gdk_surface_set_device_cursor (GdkSurface *surface,
GdkDevice *device,
GdkCursor *cursor)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (GDK_IS_DEVICE (device));
g_return_if_fail (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD);
g_return_if_fail (gdk_device_get_device_type (device) == GDK_DEVICE_TYPE_MASTER);
if (!cursor)
g_hash_table_remove (surface->device_cursor, device);
else
g_hash_table_replace (surface->device_cursor, device, g_object_ref (cursor));
gdk_surface_set_cursor_internal (surface, device, cursor);
}
/*
* gdk_surface_get_geometry:
* @surface: a #GdkSurface
* @x: (out) (allow-none): return location for X coordinate of surface (relative to its parent)
* @y: (out) (allow-none): return location for Y coordinate of surface (relative to its parent)
* @width: (out) (allow-none): return location for width of surface
* @height: (out) (allow-none): return location for height of surface
*
* Any of the return location arguments to this function may be %NULL,
* if you aren’t interested in getting the value of that field.
*
* The X and Y coordinates returned are relative to the parent surface
* of @surface, which for toplevels usually means relative to the
* surface decorations (titlebar, etc.) rather than relative to the
* root window (screen-size background window).
*
* On the X11 platform, the geometry is obtained from the X server,
* so reflects the latest position of @surface; this may be out-of-sync
* with the position of @surface delivered in the most-recently-processed
* #GdkEventConfigure. gdk_surface_get_position() in contrast gets the
* position from the most recent configure event.
*
* Note: If @surface is not a toplevel, it is much better
* to call gdk_surface_get_position(), gdk_surface_get_width() and
* gdk_surface_get_height() instead, because it avoids the roundtrip to
* the X server and because these functions support the full 32-bit
* coordinate space, whereas gdk_surface_get_geometry() is restricted to
* the 16-bit coordinates of X11.
*/
void
gdk_surface_get_geometry (GdkSurface *surface,
gint *x,
gint *y,
gint *width,
gint *height)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
GDK_SURFACE_GET_CLASS (surface)->get_geometry (surface, x, y, width, height);
}
/**
* gdk_surface_get_width:
* @surface: a #GdkSurface
*
* Returns the width of the given @surface.
*
* On the X11 platform the returned size is the size reported in the
* most-recently-processed configure event, rather than the current
* size on the X server.
*
* Returns: The width of @surface
*/
int
gdk_surface_get_width (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), 0);
return surface->width;
}
/**
* gdk_surface_get_height:
* @surface: a #GdkSurface
*
* Returns the height of the given @surface.
*
* On the X11 platform the returned size is the size reported in the
* most-recently-processed configure event, rather than the current
* size on the X server.
*
* Returns: The height of @surface
*/
int
gdk_surface_get_height (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), 0);
return surface->height;
}
/*
* gdk_surface_get_origin:
* @surface: a #GdkSurface
* @x: (out): return location for X coordinate
* @y: (out): return location for Y coordinate
*
* Obtains the position of a surface in root window coordinates.
* (Compare with gdk_surface_get_position() and
* gdk_surface_get_geometry() which return the position
* of a surface relative to its parent surface.)
*/
void
gdk_surface_get_origin (GdkSurface *surface,
gint *x,
gint *y)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
gdk_surface_get_root_coords (surface, 0, 0, x, y);
}
/*
* gdk_surface_get_root_coords:
* @surface: a #GdkSurface
* @x: X coordinate in surface
* @y: Y coordinate in surface
* @root_x: (out): return location for X coordinate
* @root_y: (out): return location for Y coordinate
*
* Obtains the position of a surface position in root
* window coordinates. This is similar to
* gdk_surface_get_origin() but allows you to pass
* in any position in the surface, not just the origin.
*/
void
gdk_surface_get_root_coords (GdkSurface *surface,
gint x,
gint y,
gint *root_x,
gint *root_y)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
{
*root_x = 0;
*root_y = 0;
return;
}
GDK_SURFACE_GET_CLASS (surface)->get_root_coords (surface, x, y, root_x, root_y);
}
/**
* gdk_surface_input_shape_combine_region:
* @surface: a #GdkSurface
* @shape_region: region of surface to be non-transparent
* @offset_x: X position of @shape_region in @surface coordinates
* @offset_y: Y position of @shape_region in @surface coordinates
*
* Apply the region to the surface for the purpose of event
* handling. Mouse events which happen while the pointer position
* corresponds to an unset bit in the mask will be passed on the
* surface below @surface.
*
* An input shape is typically used with RGBA surfaces.
* The alpha channel of the surface defines which pixels are
* invisible and allows for nicely antialiased borders,
* and the input shape controls where the surface is
* “clickable”.
*
* On the X11 platform, this requires version 1.1 of the
* shape extension.
*
* On the Win32 platform, this functionality is not present and the
* function does nothing.
*/
void
gdk_surface_input_shape_combine_region (GdkSurface *surface,
const cairo_region_t *shape_region,
gint offset_x,
gint offset_y)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
if (surface->input_shape)
cairo_region_destroy (surface->input_shape);
if (shape_region)
{
surface->input_shape = cairo_region_copy (shape_region);
cairo_region_translate (surface->input_shape, offset_x, offset_y);
}
else
surface->input_shape = NULL;
GDK_SURFACE_GET_CLASS (surface)->input_shape_combine_region (surface, surface->input_shape, 0, 0);
}
/**
* gdk_surface_get_modal_hint:
* @surface: A toplevel #GdkSurface.
*
* Determines whether or not the window manager is hinted that @surface
* has modal behaviour.
*
* Returns: whether or not the surface has the modal hint set.
*/
gboolean
gdk_surface_get_modal_hint (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
return surface->modal_hint;
}
/**
* gdk_surface_get_accept_focus:
* @surface: a toplevel #GdkSurface.
*
* Determines whether or not the desktop environment shuld be hinted that
* the surface does not want to receive input focus.
*
* Returns: whether or not the surface should receive input focus.
*/
gboolean
gdk_surface_get_accept_focus (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
return surface->accept_focus;
}
/**
* gdk_surface_get_focus_on_map:
* @surface: a toplevel #GdkSurface.
*
* Determines whether or not the desktop environment should be hinted that the
* surface does not want to receive input focus when it is mapped.
*
* Returns: whether or not the surface wants to receive input focus when
* it is mapped.
*/
gboolean
gdk_surface_get_focus_on_map (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
return surface->focus_on_map;
}
static void
update_cursor (GdkDisplay *display,
GdkDevice *device)
{
GdkSurface *cursor_surface;
GdkSurface *pointer_surface;
GdkPointerSurfaceInfo *pointer_info;
GdkDeviceGrabInfo *grab;
GdkCursor *cursor;
pointer_info = _gdk_display_get_pointer_info (display, device);
pointer_surface = pointer_info->surface_under_pointer;
/* We ignore the serials here and just pick the last grab
we've sent, as that would shortly be used anyway. */
grab = _gdk_display_get_last_device_grab (display, device);
if (grab != NULL)
{
/* use the cursor from the grab surface */
cursor_surface = grab->surface;
}
else
{
/* otherwise use the cursor from the pointer surface */
cursor_surface = pointer_surface;
}
cursor = g_hash_table_lookup (cursor_surface->device_cursor, device);
if (!cursor)
cursor = cursor_surface->cursor;
GDK_DEVICE_GET_CLASS (device)->set_surface_cursor (device, pointer_surface, cursor);
}
/**
* gdk_surface_beep:
* @surface: a toplevel #GdkSurface
*
* Emits a short beep associated to @surface in the appropriate
* display, if supported. Otherwise, emits a short beep on
* the display just as gdk_display_beep().
**/
void
gdk_surface_beep (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
if (GDK_SURFACE_GET_CLASS (surface)->beep (surface))
return;
gdk_display_beep (surface->display);
}
/**
* gdk_surface_set_support_multidevice:
* @surface: a #GdkSurface.
* @support_multidevice: %TRUE to enable multidevice support in @surface.
*
* This function will enable multidevice features in @surface.
*
* Multidevice aware surfaces will need to handle properly multiple,
* per device enter/leave events, device grabs and grab ownerships.
**/
void
gdk_surface_set_support_multidevice (GdkSurface *surface,
gboolean support_multidevice)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
if (surface->support_multidevice == support_multidevice)
return;
surface->support_multidevice = support_multidevice;
/* FIXME: What to do if called when some pointers are inside the surface ? */
}
/**
* gdk_surface_get_support_multidevice:
* @surface: a #GdkSurface.
*
* Returns %TRUE if the surface is aware of the existence of multiple
* devices.
*
* Returns: %TRUE if the surface handles multidevice features.
**/
gboolean
gdk_surface_get_support_multidevice (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
if (GDK_SURFACE_DESTROYED (surface))
return FALSE;
return surface->support_multidevice;
}
void
_gdk_display_set_surface_under_pointer (GdkDisplay *display,
GdkDevice *device,
GdkSurface *surface)
{
GdkPointerSurfaceInfo *device_info;
device_info = _gdk_display_get_pointer_info (display, device);
if (device_info->surface_under_pointer)
g_object_unref (device_info->surface_under_pointer);
device_info->surface_under_pointer = surface;
if (surface)
{
g_object_ref (surface);
update_cursor (display, device);
}
}
#define GDK_ANY_BUTTON_MASK (GDK_BUTTON1_MASK | \
GDK_BUTTON2_MASK | \
GDK_BUTTON3_MASK | \
GDK_BUTTON4_MASK | \
GDK_BUTTON5_MASK)
void
_gdk_windowing_got_event (GdkDisplay *display,
GList *event_link,
GdkEvent *event,
gulong serial)
{
GdkSurface *event_surface;
gboolean unlink_event = FALSE;
GdkDeviceGrabInfo *button_release_grab;
GdkPointerSurfaceInfo *pointer_info = NULL;
GdkDevice *device, *source_device;
_gdk_display_update_last_event (display, event);
device = gdk_event_get_device (event);
source_device = gdk_event_get_source_device (event);
if (device)
{
if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD &&
gdk_device_get_source (device) != GDK_SOURCE_TABLET_PAD)
{
pointer_info = _gdk_display_get_pointer_info (display, device);
if (source_device != pointer_info->last_slave &&
gdk_device_get_device_type (source_device) == GDK_DEVICE_TYPE_SLAVE)
pointer_info->last_slave = source_device;
else if (pointer_info->last_slave)
source_device = pointer_info->last_slave;
}
_gdk_display_device_grab_update (display, device, source_device, serial);
if (gdk_device_get_input_mode (device) == GDK_MODE_DISABLED ||
!_gdk_display_check_grab_ownership (display, device, serial))
{
/* Device events are blocked by another
* device grab, or the device is disabled
*/
unlink_event = TRUE;
goto out;
}
}
event_surface = event->any.surface;
if (!event_surface)
goto out;
if (event->any.type == GDK_ENTER_NOTIFY)
_gdk_display_set_surface_under_pointer (display, device, event_surface);
else if (event->any.type == GDK_LEAVE_NOTIFY)
_gdk_display_set_surface_under_pointer (display, device, NULL);
if ((event->any.type == GDK_BUTTON_RELEASE ||
event->any.type == GDK_TOUCH_CANCEL ||
event->any.type == GDK_TOUCH_END) &&
!event->any.send_event)
{
if (event->any.type == GDK_BUTTON_RELEASE ||
gdk_event_get_pointer_emulated (event))
{
button_release_grab =
_gdk_display_has_device_grab (display, device, serial);
if (button_release_grab &&
button_release_grab->implicit &&
(event->button.state & GDK_ANY_BUTTON_MASK & ~(GDK_BUTTON1_MASK << (event->button.button - 1))) == 0)
{
button_release_grab->serial_end = serial;
button_release_grab->implicit_ungrab = FALSE;
_gdk_display_device_grab_update (display, device, source_device, serial);
}
}
}
out:
if (unlink_event)
{
_gdk_event_queue_remove_link (display, event_link);
g_list_free_1 (event_link);
g_object_unref (event);
}
/* This does two things - first it sees if there are motions at the
* end of the queue that can be compressed. Second, if there is just
* a single motion that won't be dispatched because it is a compression
* candidate it queues up flushing the event queue.
*/
_gdk_event_queue_handle_motion_compression (display);
}
/**
* gdk_surface_create_similar_surface:
* @surface: surface to make new surface similar to
* @content: the content for the new surface
* @width: width of the new surface
* @height: height of the new surface
*
* Create a new surface that is as compatible as possible with the
* given @surface. For example the new surface will have the same
* fallback resolution and font options as @surface. Generally, the new
* surface will also use the same backend as @surface, unless that is
* not possible for some reason. The type of the returned surface may
* be examined with cairo_surface_get_type().
*
* Initially the surface contents are all 0 (transparent if contents
* have transparency, black otherwise.)
*
* Returns: a pointer to the newly allocated surface. The caller
* owns the surface and should call cairo_surface_destroy() when done
* with it.
*
* This function always returns a valid pointer, but it will return a
* pointer to a “nil” surface if @other is already in an error state
* or any other error occurs.
**/
cairo_surface_t *
gdk_surface_create_similar_surface (GdkSurface * surface,
cairo_content_t content,
int width,
int height)
{
cairo_surface_t *similar_surface;
int scale;
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
scale = gdk_surface_get_scale_factor (surface);
similar_surface = cairo_image_surface_create (content == CAIRO_CONTENT_COLOR ? CAIRO_FORMAT_RGB24 :
content == CAIRO_CONTENT_ALPHA ? CAIRO_FORMAT_A8 : CAIRO_FORMAT_ARGB32,
width * scale, height * scale);
cairo_surface_set_device_scale (similar_surface, scale, scale);
return similar_surface;
}
/**
* gdk_surface_focus:
* @surface: a #GdkSurface
* @timestamp: timestamp of the event triggering the surface focus
*
* Sets keyboard focus to @surface. In most cases, gtk_window_present_with_time()
* should be used on a #GtkWindow, rather than calling this function.
*
**/
void
gdk_surface_focus (GdkSurface *surface,
guint32 timestamp)
{
GDK_SURFACE_GET_CLASS (surface)->focus (surface, timestamp);
}
/**
* gdk_surface_set_type_hint:
* @surface: A toplevel #GdkSurface
* @hint: A hint of the function this surface will have
*
* The application can use this call to provide a hint to the surface
* manager about the functionality of a surface. The window manager
* can use this information when determining the decoration and behaviour
* of the surface.
*
* The hint must be set before the surface is mapped.
**/
void
gdk_surface_set_type_hint (GdkSurface *surface,
GdkSurfaceTypeHint hint)
{
GDK_SURFACE_GET_CLASS (surface)->set_type_hint (surface, hint);
}
/**
* gdk_surface_get_type_hint:
* @surface: A toplevel #GdkSurface
*
* This function returns the type hint set for a surface.
*
* Returns: The type hint set for @surface
**/
GdkSurfaceTypeHint
gdk_surface_get_type_hint (GdkSurface *surface)
{
return GDK_SURFACE_GET_CLASS (surface)->get_type_hint (surface);
}
/**
* gdk_surface_set_modal_hint:
* @surface: A toplevel #GdkSurface
* @modal: %TRUE if the surface is modal, %FALSE otherwise.
*
* The application can use this hint to tell the window manager
* that a certain surface has modal behaviour. The window manager
* can use this information to handle modal surfaces in a special
* way.
*
* You should only use this on surfaces for which you have
* previously called gdk_surface_set_transient_for()
**/
void
gdk_surface_set_modal_hint (GdkSurface *surface,
gboolean modal)
{
GDK_SURFACE_GET_CLASS (surface)->set_modal_hint (surface, modal);
}
/**
* gdk_surface_set_geometry_hints:
* @surface: a toplevel #GdkSurface
* @geometry: geometry hints
* @geom_mask: bitmask indicating fields of @geometry to pay attention to
*
* Sets the geometry hints for @surface. Hints flagged in @geom_mask
* are set, hints not flagged in @geom_mask are unset.
* To unset all hints, use a @geom_mask of 0 and a @geometry of %NULL.
*
* This function provides hints to the surfaceing system about
* acceptable sizes for a toplevel surface. The purpose of
* this is to constrain user resizing, but the windowing system
* will typically (but is not required to) also constrain the
* current size of the surface to the provided values and
* constrain programatic resizing via gdk_surface_resize().
*
* Note that on X11, this effect has no effect on surfaces
* of type %GDK_SURFACE_TEMP since these surfaces are not resizable
* by the user.
*
* Since you can’t count on the windowing system doing the
* constraints for programmatic resizes, you should generally
* call gdk_surface_constrain_size() yourself to determine
* appropriate sizes.
*
**/
void
gdk_surface_set_geometry_hints (GdkSurface *surface,
const GdkGeometry *geometry,
GdkSurfaceHints geom_mask)
{
g_return_if_fail (geometry != NULL || geom_mask == 0);
GDK_SURFACE_GET_CLASS (surface)->set_geometry_hints (surface, geometry, geom_mask);
}
/**
* gdk_surface_set_title:
* @surface: a toplevel #GdkSurface
* @title: title of @surface
*
* Sets the title of a toplevel surface, to be displayed in the titlebar.
* If you haven’t explicitly set the icon name for the surface
* (using gdk_surface_set_icon_name()), the icon name will be set to
* @title as well. @title must be in UTF-8 encoding (as with all
* user-readable strings in GDK and GTK). @title may not be %NULL.
**/
void
gdk_surface_set_title (GdkSurface *surface,
const gchar *title)
{
GDK_SURFACE_GET_CLASS (surface)->set_title (surface, title);
}
/**
* gdk_surface_set_startup_id:
* @surface: a toplevel #GdkSurface
* @startup_id: a string with startup-notification identifier
*
* When using GTK, typically you should use gtk_window_set_startup_id()
* instead of this low-level function.
**/
void
gdk_surface_set_startup_id (GdkSurface *surface,
const gchar *startup_id)
{
GDK_SURFACE_GET_CLASS (surface)->set_startup_id (surface, startup_id);
}
/**
* gdk_surface_set_transient_for:
* @surface: a toplevel #GdkSurface
* @parent: another toplevel #GdkSurface
*
* Indicates to the window manager that @surface is a transient dialog
* associated with the application surface @parent. This allows the
* window manager to do things like center @surface on @parent and
* keep @surface above @parent.
*
* See gtk_window_set_transient_for() if you’re using #GtkWindow or
* #GtkDialog.
**/
void
gdk_surface_set_transient_for (GdkSurface *surface,
GdkSurface *parent)
{
surface->transient_for = parent;
GDK_SURFACE_GET_CLASS (surface)->set_transient_for (surface, parent);
}
/**
* gdk_surface_set_accept_focus:
* @surface: a toplevel #GdkSurface
* @accept_focus: %TRUE if the surface should receive input focus
*
* Setting @accept_focus to %FALSE hints the desktop environment that the
* surface doesn’t want to receive input focus.
*
* On X, it is the responsibility of the window manager to interpret this
* hint. ICCCM-compliant window manager usually respect it.
**/
void
gdk_surface_set_accept_focus (GdkSurface *surface,
gboolean accept_focus)
{
GDK_SURFACE_GET_CLASS (surface)->set_accept_focus (surface, accept_focus);
}
/**
* gdk_surface_set_focus_on_map:
* @surface: a toplevel #GdkSurface
* @focus_on_map: %TRUE if the surface should receive input focus when mapped
*
* Setting @focus_on_map to %FALSE hints the desktop environment that the
* surface doesn’t want to receive input focus when it is mapped.
* focus_on_map should be turned off for surfaces that aren’t triggered
* interactively (such as popups from network activity).
*
* On X, it is the responsibility of the window manager to interpret
* this hint. Window managers following the freedesktop.org window
* manager extension specification should respect it.
**/
void
gdk_surface_set_focus_on_map (GdkSurface *surface,
gboolean focus_on_map)
{
GDK_SURFACE_GET_CLASS (surface)->set_focus_on_map (surface, focus_on_map);
}
/**
* gdk_surface_set_icon_list:
* @surface: The #GdkSurface toplevel surface to set the icon of.
* @surfaces: (transfer none) (element-type GdkTexture):
* A list of image surfaces, of different sizes.
*
* Sets a list of icons for the surface. One of these will be used
* to represent the surface when it has been iconified. The icon is
* usually shown in an icon box or some sort of task bar. Which icon
* size is shown depends on the window manager. The window manager
* can scale the icon but setting several size icons can give better
* image quality since the window manager may only need to scale the
* icon by a small amount or not at all.
*
* Note that some platforms don't support surface icons.
*/
void
gdk_surface_set_icon_list (GdkSurface *surface,
GList *textures)
{
GDK_SURFACE_GET_CLASS (surface)->set_icon_list (surface, textures);
}
/**
* gdk_surface_set_icon_name:
* @surface: a toplevel #GdkSurface
* @name: (allow-none): name of surface while iconified (minimized)
*
* Surfaces may have a name used while minimized, distinct from the
* name they display in their titlebar. Most of the time this is a bad
* idea from a user interface standpoint. But you can set such a name
* with this function, if you like.
*
* After calling this with a non-%NULL @name, calls to gdk_surface_set_title()
* will not update the icon title.
*
* Using %NULL for @name unsets the icon title; further calls to
* gdk_surface_set_title() will again update the icon title as well.
*
* Note that some platforms don't support surface icons.
**/
void
gdk_surface_set_icon_name (GdkSurface *surface,
const gchar *name)
{
GDK_SURFACE_GET_CLASS (surface)->set_icon_name (surface, name);
}
/**
* gdk_surface_minimize:
* @surface: a toplevel #GdkSurface
*
* Asks to minimize the @surface.
*
* The windowing system may choose to ignore the request.
*
* You can track the result of this request by using the #GdkSurface:state
* property.
*
* This function only makes sense when @surface is a toplevel surface.
*/
void
gdk_surface_minimize (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
GDK_SURFACE_GET_CLASS (surface)->minimize (surface);
}
/**
* gdk_surface_unminimize:
* @surface: a toplevel #GdkSurface
*
* Asks to unminimize the @surface.
*
* The windowing system may choose to ignore the request.
*
* You can track the result of this request by using the #GdkSurface:state
* property.
*
* This function only makes sense when @surface is a toplevel surface.
*/
void
gdk_surface_unminimize (GdkSurface *surface)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
GDK_SURFACE_GET_CLASS (surface)->unminimize (surface);
}
/**
* gdk_surface_stick:
* @surface: a toplevel #GdkSurface
*
* “Pins” a surface such that it’s on all workspaces and does not scroll
* with viewports, for window managers that have scrollable viewports.
* (When using #GtkWindow, gtk_window_stick() may be more useful.)
*
* On the X11 platform, this function depends on window manager
* support, so may have no effect with many window managers. However,
* GDK will do the best it can to convince the window manager to stick
* the surface. For window managers that don’t support this operation,
* there’s nothing you can do to force it to happen.
*
**/
void
gdk_surface_stick (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->stick (surface);
}
/**
* gdk_surface_unstick:
* @surface: a toplevel #GdkSurface
*
* Reverse operation for gdk_surface_stick(); see gdk_surface_stick(),
* and gtk_window_unstick().
*
**/
void
gdk_surface_unstick (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->unstick (surface);
}
/**
* gdk_surface_maximize:
* @surface: a toplevel #GdkSurface
*
* Maximizes the surface. If the surface was already maximized, then
* this function does nothing.
*
* On X11, asks the window manager to maximize @surface, if the window
* manager supports this operation. Not all window managers support
* this, and some deliberately ignore it or don’t have a concept of
* “maximized”; so you can’t rely on the maximization actually
* happening. But it will happen with most standard window managers,
* and GDK makes a best effort to get it to happen.
*
* On Windows, reliably maximizes the surface.
*
**/
void
gdk_surface_maximize (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->maximize (surface);
}
/**
* gdk_surface_unmaximize:
* @surface: a toplevel #GdkSurface
*
* Unmaximizes the surface. If the surface wasn’t maximized, then this
* function does nothing.
*
* On X11, asks the window manager to unmaximize @surface, if the
* window manager supports this operation. Not all window managers
* support this, and some deliberately ignore it or don’t have a
* concept of “maximized”; so you can’t rely on the unmaximization
* actually happening. But it will happen with most standard window
* managers, and GDK makes a best effort to get it to happen.
*
* On Windows, reliably unmaximizes the surface.
*
**/
void
gdk_surface_unmaximize (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->unmaximize (surface);
}
/**
* gdk_surface_fullscreen:
* @surface: a toplevel #GdkSurface
*
* Moves the surface into fullscreen mode. This means the
* surface covers the entire screen and is above any panels
* or task bars.
*
* If the surface was already fullscreen, then this function does nothing.
*
* On X11, asks the window manager to put @surface in a fullscreen
* state, if the window manager supports this operation. Not all
* window managers support this, and some deliberately ignore it or
* don’t have a concept of “fullscreen”; so you can’t rely on the
* fullscreenification actually happening. But it will happen with
* most standard window managers, and GDK makes a best effort to get
* it to happen.
**/
void
gdk_surface_fullscreen (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->fullscreen (surface);
}
/**
* gdk_surface_fullscreen_on_monitor:
* @surface: a toplevel #GdkSurface
* @monitor: Which monitor to display fullscreen on.
*
* Moves the surface into fullscreen mode on the given monitor. This means
* the surface covers the entire screen and is above any panels or task bars.
*
* If the surface was already fullscreen, then this function does nothing.
**/
void
gdk_surface_fullscreen_on_monitor (GdkSurface *surface,
GdkMonitor *monitor)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (GDK_IS_MONITOR (monitor));
g_return_if_fail (gdk_monitor_get_display (monitor) == surface->display);
g_return_if_fail (gdk_monitor_is_valid (monitor));
if (GDK_SURFACE_GET_CLASS (surface)->fullscreen_on_monitor != NULL)
GDK_SURFACE_GET_CLASS (surface)->fullscreen_on_monitor (surface, monitor);
else
GDK_SURFACE_GET_CLASS (surface)->fullscreen (surface);
}
/**
* gdk_surface_set_fullscreen_mode:
* @surface: a toplevel #GdkSurface
* @mode: fullscreen mode
*
* Specifies whether the @surface should span over all monitors (in a multi-head
* setup) or only the current monitor when in fullscreen mode.
*
* The @mode argument is from the #GdkFullscreenMode enumeration.
* If #GDK_FULLSCREEN_ON_ALL_MONITORS is specified, the fullscreen @surface will
* span over all monitors of the display.
*
* On X11, searches through the list of monitors display the ones
* which delimit the 4 edges of the entire display and will ask the window
* manager to span the @surface over these monitors.
*
* If the XINERAMA extension is not available or not usable, this function
* has no effect.
*
* Not all window managers support this, so you can’t rely on the fullscreen
* surface to span over the multiple monitors when #GDK_FULLSCREEN_ON_ALL_MONITORS
* is specified.
**/
void
gdk_surface_set_fullscreen_mode (GdkSurface *surface,
GdkFullscreenMode mode)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (surface->fullscreen_mode != mode)
{
surface->fullscreen_mode = mode;
if (GDK_SURFACE_GET_CLASS (surface)->apply_fullscreen_mode != NULL)
GDK_SURFACE_GET_CLASS (surface)->apply_fullscreen_mode (surface);
}
}
/**
* gdk_surface_get_fullscreen_mode:
* @surface: a toplevel #GdkSurface
*
* Obtains the #GdkFullscreenMode of the @surface.
*
* Returns: The #GdkFullscreenMode applied to the surface when fullscreen.
**/
GdkFullscreenMode
gdk_surface_get_fullscreen_mode (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), GDK_FULLSCREEN_ON_CURRENT_MONITOR);
return surface->fullscreen_mode;
}
/**
* gdk_surface_unfullscreen:
* @surface: a toplevel #GdkSurface
*
* Moves the surface out of fullscreen mode. If the surface was not
* fullscreen, does nothing.
*
* On X11, asks the window manager to move @surface out of the fullscreen
* state, if the window manager supports this operation. Not all
* window managers support this, and some deliberately ignore it or
* don’t have a concept of “fullscreen”; so you can’t rely on the
* unfullscreenification actually happening. But it will happen with
* most standard window managers, and GDK makes a best effort to get
* it to happen.
**/
void
gdk_surface_unfullscreen (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->unfullscreen (surface);
}
/**
* gdk_surface_set_keep_above:
* @surface: a toplevel #GdkSurface
* @setting: whether to keep @surface above other surfaces
*
* Set if @surface must be kept above other surfaces. If the
* surface was already above, then this function does nothing.
*
* On X11, asks the window manager to keep @surface above, if the window
* manager supports this operation. Not all window managers support
* this, and some deliberately ignore it or don’t have a concept of
* “keep above”; so you can’t rely on the surface being kept above.
* But it will happen with most standard window managers,
* and GDK makes a best effort to get it to happen.
**/
void
gdk_surface_set_keep_above (GdkSurface *surface,
gboolean setting)
{
GDK_SURFACE_GET_CLASS (surface)->set_keep_above (surface, setting);
}
/**
* gdk_surface_set_keep_below:
* @surface: a toplevel #GdkSurface
* @setting: whether to keep @surface below other surfaces
*
* Set if @surface must be kept below other surfaces. If the
* surface was already below, then this function does nothing.
*
* On X11, asks the window manager to keep @surface below, if the window
* manager supports this operation. Not all window managers support
* this, and some deliberately ignore it or don’t have a concept of
* “keep below”; so you can’t rely on the surface being kept below.
* But it will happen with most standard window managers,
* and GDK makes a best effort to get it to happen.
**/
void
gdk_surface_set_keep_below (GdkSurface *surface,
gboolean setting)
{
GDK_SURFACE_GET_CLASS (surface)->set_keep_below (surface, setting);
}
/**
* gdk_surface_set_decorations:
* @surface: a toplevel #GdkSurface
* @decorations: decoration hint mask
*
* “Decorations” are the features the window manager adds to a toplevel #GdkSurface.
* This function sets the traditional Motif window manager hints that tell the
* window manager which decorations you would like your surface to have.
* Usually you should use gtk_window_set_decorated() on a #GtkWindow instead of
* using the GDK function directly.
*
* The @decorations argument is the logical OR of the fields in
* the #GdkWMDecoration enumeration. If #GDK_DECOR_ALL is included in the
* mask, the other bits indicate which decorations should be turned off.
* If #GDK_DECOR_ALL is not included, then the other bits indicate
* which decorations should be turned on.
*
* Most window managers honor a decorations hint of 0 to disable all decorations,
* but very few honor all possible combinations of bits.
*
**/
void
gdk_surface_set_decorations (GdkSurface *surface,
GdkWMDecoration decorations)
{
GDK_SURFACE_GET_CLASS (surface)->set_decorations (surface, decorations);
}
/**
* gdk_surface_get_decorations:
* @surface: The toplevel #GdkSurface to get the decorations from
* @decorations: (out): The surface decorations will be written here
*
* Returns the decorations set on the GdkSurface with
* gdk_surface_set_decorations().
*
* Returns: %TRUE if the surface has decorations set, %FALSE otherwise.
**/
gboolean
gdk_surface_get_decorations (GdkSurface *surface,
GdkWMDecoration *decorations)
{
return GDK_SURFACE_GET_CLASS (surface)->get_decorations (surface, decorations);
}
/**
* gdk_surface_set_functions:
* @surface: a toplevel #GdkSurface
* @functions: bitmask of operations to allow on @surface
*
* Sets hints about the window management functions to make available
* via buttons on the window frame.
*
* On the X backend, this function sets the traditional Motif window
* manager hint for this purpose. However, few window managers do
* anything reliable or interesting with this hint. Many ignore it
* entirely.
*
* The @functions argument is the logical OR of values from the
* #GdkWMFunction enumeration. If the bitmask includes #GDK_FUNC_ALL,
* then the other bits indicate which functions to disable; if
* it doesn’t include #GDK_FUNC_ALL, it indicates which functions to
* enable.
*
**/
void
gdk_surface_set_functions (GdkSurface *surface,
GdkWMFunction functions)
{
GDK_SURFACE_GET_CLASS (surface)->set_functions (surface, functions);
}
/**
* gdk_surface_begin_resize_drag_for_device:
* @surface: a toplevel #GdkSurface
* @edge: the edge or corner from which the drag is started
* @device: the device used for the operation
* @button: the button being used to drag, or 0 for a keyboard-initiated drag
* @x: surface X coordinate of mouse click that began the drag
* @y: surface Y coordinate of mouse click that began the drag
* @timestamp: timestamp of mouse click that began the drag (use gdk_event_get_time())
*
* Begins a surface resize operation (for a toplevel surface).
* You might use this function to implement a “window resize grip,”
*/
void
gdk_surface_begin_resize_drag_for_device (GdkSurface *surface,
GdkSurfaceEdge edge,
GdkDevice *device,
gint button,
gint x,
gint y,
guint32 timestamp)
{
GDK_SURFACE_GET_CLASS (surface)->begin_resize_drag (surface, edge, device, button, x, y, timestamp);
}
/**
* gdk_surface_begin_resize_drag:
* @surface: a toplevel #GdkSurface
* @edge: the edge or corner from which the drag is started
* @button: the button being used to drag, or 0 for a keyboard-initiated drag
* @x: surface X coordinate of mouse click that began the drag
* @y: surface Y coordinate of mouse click that began the drag
* @timestamp: timestamp of mouse click that began the drag (use gdk_event_get_time())
*
* Begins a surface resize operation (for a toplevel surface).
*
* This function assumes that the drag is controlled by the
* client pointer device, use gdk_surface_begin_resize_drag_for_device()
* to begin a drag with a different device.
*/
void
gdk_surface_begin_resize_drag (GdkSurface *surface,
GdkSurfaceEdge edge,
gint button,
gint x,
gint y,
guint32 timestamp)
{
GdkDevice *device;
device = gdk_seat_get_pointer (gdk_display_get_default_seat (surface->display));
gdk_surface_begin_resize_drag_for_device (surface, edge,
device, button, x, y, timestamp);
}
/**
* gdk_surface_begin_move_drag_for_device:
* @surface: a toplevel #GdkSurface
* @device: the device used for the operation
* @button: the button being used to drag, or 0 for a keyboard-initiated drag
* @x: surface X coordinate of mouse click that began the drag
* @y: surface Y coordinate of mouse click that began the drag
* @timestamp: timestamp of mouse click that began the drag
*
* Begins a surface move operation (for a toplevel surface).
*/
void
gdk_surface_begin_move_drag_for_device (GdkSurface *surface,
GdkDevice *device,
gint button,
gint x,
gint y,
guint32 timestamp)
{
GDK_SURFACE_GET_CLASS (surface)->begin_move_drag (surface,
device, button, x, y, timestamp);
}
/**
* gdk_surface_begin_move_drag:
* @surface: a toplevel #GdkSurface
* @button: the button being used to drag, or 0 for a keyboard-initiated drag
* @x: surface X coordinate of mouse click that began the drag
* @y: surface Y coordinate of mouse click that began the drag
* @timestamp: timestamp of mouse click that began the drag
*
* Begins a surface move operation (for a toplevel surface).
*
* This function assumes that the drag is controlled by the
* client pointer device, use gdk_surface_begin_move_drag_for_device()
* to begin a drag with a different device.
*/
void
gdk_surface_begin_move_drag (GdkSurface *surface,
gint button,
gint x,
gint y,
guint32 timestamp)
{
GdkDevice *device;
device = gdk_seat_get_pointer (gdk_display_get_default_seat (surface->display));
gdk_surface_begin_move_drag_for_device (surface, device, button, x, y, timestamp);
}
/**
* gdk_surface_set_opacity:
* @surface: a top-level or non-native #GdkSurface
* @opacity: opacity
*
* Set @surface to render as partially transparent,
* with opacity 0 being fully transparent and 1 fully opaque. (Values
* of the opacity parameter are clamped to the [0,1] range.)
*
* For toplevel surfaces this depends on support from the windowing system
* that may not always be there. For instance, On X11, this works only on
* X screens with a compositing manager running. On Wayland, there is no
* per-surface opacity value that the compositor would apply. Instead, use
* `gdk_surface_set_opaque_region (surface, NULL)` to tell the compositor
* that the entire surface is (potentially) non-opaque, and draw your content
* with alpha, or use gtk_widget_set_opacity() to set an overall opacity
* for your widgets.
*
* Support for non-toplevel surfaces was added in 3.8.
*/
void
gdk_surface_set_opacity (GdkSurface *surface,
gdouble opacity)
{
if (opacity < 0)
opacity = 0;
else if (opacity > 1)
opacity = 1;
surface->alpha = round (opacity * 255);
if (surface->destroyed)
return;
GDK_SURFACE_GET_CLASS (surface)->set_opacity (surface, opacity);
}
/* This function is called when the XWindow is really gone.
*/
void
gdk_surface_destroy_notify (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->destroy_notify (surface);
}
/**
* gdk_surface_register_dnd:
* @surface: a #GdkSurface.
*
* Registers a surface as a potential drop destination.
*/
void
gdk_surface_register_dnd (GdkSurface *surface)
{
GDK_SURFACE_GET_CLASS (surface)->register_dnd (surface);
}
/**
* gdk_drag_begin:
* @surface: the source surface for this drag
* @device: the device that controls this drag
* @content: (transfer none): the offered content
* @actions: the actions supported by this drag
* @dx: the x offset to @device's position where the drag nominally started
* @dy: the y offset to @device's position where the drag nominally started
*
* Starts a drag and creates a new drag context for it.
*
* This function is called by the drag source.
*
* Returns: (transfer full) (nullable): a newly created #GdkDrag or
* %NULL on error.
*/
GdkDrag *
gdk_drag_begin (GdkSurface *surface,
GdkDevice *device,
GdkContentProvider *content,
GdkDragAction actions,
gint dx,
gint dy)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
g_return_val_if_fail (GDK_IS_DEVICE (device), NULL);
g_return_val_if_fail (surface->display == gdk_device_get_display (device), NULL);
g_return_val_if_fail (GDK_IS_CONTENT_PROVIDER (content), NULL);
return GDK_SURFACE_GET_CLASS (surface)->drag_begin (surface, device, content, actions, dx, dy);
}
static void
gdk_surface_flush_events (GdkFrameClock *clock,
void *data)
{
GdkSurface *surface = GDK_SURFACE (data);
_gdk_event_queue_flush (surface->display);
_gdk_display_pause_events (surface->display);
gdk_frame_clock_request_phase (clock, GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS);
surface->frame_clock_events_paused = TRUE;
}
static void
gdk_surface_resume_events (GdkFrameClock *clock,
void *data)
{
GdkSurface *surface = GDK_SURFACE (data);
_gdk_display_unpause_events (surface->display);
surface->frame_clock_events_paused = FALSE;
}
static void
gdk_surface_set_frame_clock (GdkSurface *surface,
GdkFrameClock *clock)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (clock == NULL || GDK_IS_FRAME_CLOCK (clock));
if (clock == surface->frame_clock)
return;
if (clock)
{
g_object_ref (clock);
g_signal_connect (G_OBJECT (clock),
"flush-events",
G_CALLBACK (gdk_surface_flush_events),
surface);
g_signal_connect (G_OBJECT (clock),
"resume-events",
G_CALLBACK (gdk_surface_resume_events),
surface);
g_signal_connect (G_OBJECT (clock),
"paint",
G_CALLBACK (gdk_surface_paint_on_clock),
surface);
if (surface->update_freeze_count == 0)
_gdk_frame_clock_inhibit_freeze (clock);
}
if (surface->frame_clock)
{
if (surface->frame_clock_events_paused)
gdk_surface_resume_events (surface->frame_clock, G_OBJECT (surface));
g_signal_handlers_disconnect_by_func (G_OBJECT (surface->frame_clock),
G_CALLBACK (gdk_surface_flush_events),
surface);
g_signal_handlers_disconnect_by_func (G_OBJECT (surface->frame_clock),
G_CALLBACK (gdk_surface_resume_events),
surface);
g_signal_handlers_disconnect_by_func (G_OBJECT (surface->frame_clock),
G_CALLBACK (gdk_surface_paint_on_clock),
surface);
if (surface->update_freeze_count == 0)
_gdk_frame_clock_uninhibit_freeze (surface->frame_clock);
g_object_unref (surface->frame_clock);
}
surface->frame_clock = clock;
}
/**
* gdk_surface_get_frame_clock:
* @surface: surface to get frame clock for
*
* Gets the frame clock for the surface. The frame clock for a surface
* never changes unless the surface is reparented to a new toplevel
* surface.
*
* Returns: (transfer none): the frame clock
*/
GdkFrameClock*
gdk_surface_get_frame_clock (GdkSurface *surface)
{
g_return_val_if_fail (GDK_IS_SURFACE (surface), NULL);
return surface->frame_clock;
}
/**
* gdk_surface_get_scale_factor:
* @surface: surface to get scale factor for
*
* Returns the internal scale factor that maps from surface coordiantes
* to the actual device pixels. On traditional systems this is 1, but
* on very high density outputs this can be a higher value (often 2).
*
* A higher value means that drawing is automatically scaled up to
* a higher resolution, so any code doing drawing will automatically look
* nicer. However, if you are supplying pixel-based data the scale
* value can be used to determine whether to use a pixel resource
* with higher resolution data.
*
* The scale of a surface may change during runtime, if this happens
* a configure event will be sent to the toplevel surface.
*
* Returns: the scale factor
*/
gint
gdk_surface_get_scale_factor (GdkSurface *surface)
{
GdkSurfaceClass *class;
g_return_val_if_fail (GDK_IS_SURFACE (surface), 1);
if (GDK_SURFACE_DESTROYED (surface))
return 1;
class = GDK_SURFACE_GET_CLASS (surface);
if (class->get_scale_factor)
return class->get_scale_factor (surface);
return 1;
}
/* Returns the *real* unscaled size, which may be a fractional size
in surface scale coordinates. We need this to properly handle GL
coordinates which are y-flipped in the real coordinates. */
void
gdk_surface_get_unscaled_size (GdkSurface *surface,
int *unscaled_width,
int *unscaled_height)
{
GdkSurfaceClass *class;
gint scale;
g_return_if_fail (GDK_IS_SURFACE (surface));
class = GDK_SURFACE_GET_CLASS (surface);
if (class->get_unscaled_size)
{
class->get_unscaled_size (surface, unscaled_width, unscaled_height);
return;
}
scale = gdk_surface_get_scale_factor (surface);
if (unscaled_width)
*unscaled_width = surface->width * scale;
if (unscaled_height)
*unscaled_height = surface->height * scale;
}
/**
* gdk_surface_set_opaque_region:
* @surface: a top-level or non-native #GdkSurface
* @region: (allow-none): a region, or %NULL
*
* For optimisation purposes, compositing window managers may
* like to not draw obscured regions of surfaces, or turn off blending
* during for these regions. With RGB windows with no transparency,
* this is just the shape of the window, but with ARGB32 windows, the
* compositor does not know what regions of the window are transparent
* or not.
*
* This function only works for toplevel surfaces.
*
* GTK will update this property automatically if
* the @surface background is opaque, as we know where the opaque regions
* are. If your surface background is not opaque, please update this
* property in your #GtkWidget::style-updated handler.
*/
void
gdk_surface_set_opaque_region (GdkSurface *surface,
cairo_region_t *region)
{
GdkSurfaceClass *class;
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (!GDK_SURFACE_DESTROYED (surface));
if (cairo_region_equal (surface->opaque_region, region))
return;
g_clear_pointer (&surface->opaque_region, cairo_region_destroy);
if (region != NULL)
surface->opaque_region = cairo_region_reference (region);
class = GDK_SURFACE_GET_CLASS (surface);
if (class->set_opaque_region)
class->set_opaque_region (surface, region);
}
/**
* gdk_surface_set_shadow_width:
* @surface: a #GdkSurface
* @left: The left extent
* @right: The right extent
* @top: The top extent
* @bottom: The bottom extent
*
* Newer GTK windows using client-side decorations use extra geometry
* around their frames for effects like shadows and invisible borders.
* Window managers that want to maximize windows or snap to edges need
* to know where the extents of the actual frame lie, so that users
* don’t feel like windows are snapping against random invisible edges.
*
* Note that this property is automatically updated by GTK, so this
* function should only be used by applications which do not use GTK
* to create toplevel surfaces.
*/
void
gdk_surface_set_shadow_width (GdkSurface *surface,
gint left,
gint right,
gint top,
gint bottom)
{
GdkSurfaceClass *class;
g_return_if_fail (GDK_IS_SURFACE (surface));
g_return_if_fail (!GDK_SURFACE_DESTROYED (surface));
g_return_if_fail (left >= 0 && right >= 0 && top >= 0 && bottom >= 0);
surface->shadow_top = top;
surface->shadow_left = left;
surface->shadow_right = right;
surface->shadow_bottom = bottom;
class = GDK_SURFACE_GET_CLASS (surface);
if (class->set_shadow_width)
class->set_shadow_width (surface, left, right, top, bottom);
}
/**
* gdk_surface_show_window_menu:
* @surface: a #GdkSurface
* @event: a #GdkEvent to show the menu for
*
* Asks the windowing system to show the window menu. The window menu
* is the menu shown when right-clicking the titlebar on traditional
* windows managed by the window manager. This is useful for windows
* using client-side decorations, activating it with a right-click
* on the window decorations.
*
* Returns: %TRUE if the window menu was shown and %FALSE otherwise.
*/
gboolean
gdk_surface_show_window_menu (GdkSurface *surface,
GdkEvent *event)
{
GdkSurfaceClass *class;
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
g_return_val_if_fail (!GDK_SURFACE_DESTROYED (surface), FALSE);
class = GDK_SURFACE_GET_CLASS (surface);
if (class->show_window_menu)
return class->show_window_menu (surface, event);
else
return FALSE;
}
gboolean
gdk_surface_supports_edge_constraints (GdkSurface *surface)
{
GdkSurfaceClass *class;
g_return_val_if_fail (GDK_IS_SURFACE (surface), FALSE);
g_return_val_if_fail (!GDK_SURFACE_DESTROYED (surface), FALSE);
class = GDK_SURFACE_GET_CLASS (surface);
if (class->supports_edge_constraints)
return class->supports_edge_constraints (surface);
else
return FALSE;
}
void
gdk_surface_set_state (GdkSurface *surface,
GdkSurfaceState new_state)
{
gboolean was_mapped, mapped;
g_return_if_fail (GDK_IS_SURFACE (surface));
if (new_state == surface->state)
return; /* No actual work to do, nothing changed. */
/* Actually update the field in GdkSurface, this is sort of an odd
* place to do it, but seems like the safest since it ensures we expose no
* inconsistent state to the user.
*/
was_mapped = GDK_SURFACE_IS_MAPPED (surface);
surface->state = new_state;
mapped = GDK_SURFACE_IS_MAPPED (surface);
_gdk_surface_update_viewable (surface);
g_object_notify_by_pspec (G_OBJECT (surface), properties[PROP_STATE]);
if (was_mapped != mapped)
g_object_notify_by_pspec (G_OBJECT (surface), properties[PROP_MAPPED]);
}
void
gdk_synthesize_surface_state (GdkSurface *surface,
GdkSurfaceState unset_flags,
GdkSurfaceState set_flags)
{
gdk_surface_set_state (surface, (surface->state | set_flags) & ~unset_flags);
}
static gboolean
check_autohide (GdkEvent *event)
{
GdkDisplay *display;
GdkDevice *device;
GdkSurface *grab_surface;
switch ((guint) gdk_event_get_event_type (event))
{
case GDK_BUTTON_PRESS:
#if 0
// FIXME: we need to ignore the release that is paired
// with the press starting the grab - due to implicit
// grabs, it will be delivered to the same place as the
// press, and will cause the auto dismissal to be triggered.
case GDK_BUTTON_RELEASE:
#endif
case GDK_TOUCH_BEGIN:
case GDK_TOUCH_END:
case GDK_TOUCH_CANCEL:
case GDK_TOUCHPAD_SWIPE:
case GDK_TOUCHPAD_PINCH:
display = gdk_event_get_display (event);
device = gdk_event_get_device (event);
if (gdk_device_grab_info (display, device, &grab_surface, NULL))
{
if (grab_surface != gdk_event_get_surface (event) &&
grab_surface->autohide)
{
gdk_surface_hide (grab_surface);
return TRUE;
}
}
break;
default:;
}
return FALSE;
}
static gboolean
is_key_event (GdkEvent *event)
{
switch ((guint) gdk_event_get_event_type (event))
{
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
return TRUE;
default:;
}
return FALSE;
}
static void
rewrite_event_for_toplevel (GdkEvent *event)
{
GdkSurface *surface;
surface = gdk_event_get_surface (event);
while (surface->parent)
surface = surface->parent;
g_set_object (&event->any.surface, surface);
}
#ifdef G_ENABLE_DEBUG
static void
add_event_mark (GdkEvent *event,
gint64 time,
guint64 duration)
{
gchar *message = NULL;
const gchar *kind;
GEnumValue *value;
GdkEventType event_type;
event_type = gdk_event_get_event_type (event);
value = g_enum_get_value (g_type_class_peek_static (GDK_TYPE_EVENT_TYPE), event_type);
kind = value ? value->value_nick : NULL;
switch (event_type)
{
case GDK_MOTION_NOTIFY:
{
GdkEventMotion *motion = (GdkEventMotion *)event;
message = g_strdup_printf ("{x=%lf, y=%lf, state=0x%x}",
motion->x, motion->y, motion->state);
break;
}
case GDK_BUTTON_PRESS:
{
GdkEventButton *button = (GdkEventButton *)event;
message = g_strdup_printf ("{button=%u, x=%lf, y=%lf, state=0x%x}",
button->button, button->x, button->y, button->state);
break;
}
case GDK_BUTTON_RELEASE:
{
GdkEventButton *button = (GdkEventButton *)event;
message = g_strdup_printf ("{button=%u, x=%lf, y=%lf, state=0x%x}",
button->button, button->x, button->y, button->state);
break;
}
case GDK_KEY_PRESS:
{
GdkEventKey *key = (GdkEventKey *)event;
message = g_strdup_printf ("{keyval=%u, state=0x%x, hardware_keycode=%u key_scancode=%u group=%u is_modifier=%u}",
key->keyval, key->state, key->hardware_keycode, key->key_scancode, key->group, key->is_modifier);
break;
}
case GDK_KEY_RELEASE:
{
GdkEventKey *key = (GdkEventKey *)event;
message = g_strdup_printf ("{keyval=%u, state=0x%x, hardware_keycode=%u key_scancode=%u group=%u is_modifier=%u}",
key->keyval, key->state, key->hardware_keycode, key->key_scancode, key->group, key->is_modifier);
break;
}
case GDK_CONFIGURE:
{
GdkEventConfigure *config = (GdkEventConfigure *)event;
message = g_strdup_printf ("{x=%d, y=%d, width=%d, height=%d}",
config->x, config->y, config->width, config->height);
break;
}
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
case GDK_TOUCHPAD_SWIPE:
case GDK_TOUCHPAD_PINCH:
case GDK_SCROLL:
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DROP_START:
case GDK_TOUCH_BEGIN:
case GDK_TOUCH_UPDATE:
case GDK_TOUCH_END:
case GDK_TOUCH_CANCEL:
case GDK_PAD_BUTTON_PRESS:
case GDK_PAD_BUTTON_RELEASE:
case GDK_PAD_RING:
case GDK_PAD_STRIP:
case GDK_PAD_GROUP_MODE:
case GDK_GRAB_BROKEN:
case GDK_DELETE:
case GDK_DESTROY:
case GDK_FOCUS_CHANGE:
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
case GDK_NOTHING:
case GDK_EVENT_LAST:
default:
break;
}
if (kind != NULL && message != NULL)
{
gchar *full_message = g_strdup_printf ("%s %s", kind, message);
gdk_profiler_add_mark (time * 1000L, duration * 1000L, "event", full_message);
g_free (full_message);
}
else
{
gdk_profiler_add_mark (time * 1000L, duration * 1000L, "event", message);
}
g_free (message);
}
#endif
gboolean
gdk_surface_handle_event (GdkEvent *event)
{
#ifdef G_ENABLE_DEBUG
gint64 begin_time = g_get_monotonic_time ();
#endif
gboolean handled = FALSE;
if (check_autohide (event))
return TRUE;
if (gdk_event_get_event_type (event) == GDK_CONFIGURE)
{
g_signal_emit (gdk_event_get_surface (event), signals[SIZE_CHANGED], 0,
event->configure.width, event->configure.height);
handled = TRUE;
}
else
{
if (is_key_event (event))
rewrite_event_for_toplevel (event);
g_signal_emit (gdk_event_get_surface (event), signals[EVENT], 0, event, &handled);
}
#ifdef G_ENABLE_DEBUG
if (gdk_profiler_is_running ())
add_event_mark (event, begin_time, g_get_monotonic_time () - begin_time);
#endif
return handled;
}
gboolean
gdk_surface_translate_coordinates (GdkSurface *from,
GdkSurface *to,
double *x,
double *y)
{
int x1, y1, x2, y2;
GdkSurface *f, *t;
x1 = 0;
y1 = 0;
f = from;
while (f->parent)
{
x1 += f->x;
y1 += f->y;
f = f->parent;
}
x2 = 0;
y2 = 0;
t = to;
while (t->parent)
{
x2 += t->x;
y2 += t->y;
t = t->parent;
}
if (f != t)
return FALSE;
*x += x1 - x2;
*y += y1 - y2;
return TRUE;
}
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