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gtk/gdk/gdksurface.c
Emmanuele Bassi f28aa1ba02 Restructure the GdkEvent type hierarchy 
GdkEvent has been a "I-can't-believe-this-is-not-OOP" type for ages,
using a union of sub-types. This has always been problematic when it
comes to implementing accessor functions: either you get generic API
that takes a GdkEvent and uses a massive switch() to determine which
event types have the data you're looking for; or you create namespaced
accessors, but break language bindings horribly, as boxed types cannot
have derived types.

The recent conversion of GskRenderNode (which had similar issues) to
GTypeInstance, and the fact that GdkEvent is now a completely opaque
type, provide us with the chance of moving GdkEvent to GTypeInstance,
and have sub-types for GdkEvent.

The change from boxed type to GTypeInstance is pretty small, all things
considered, but ends up cascading to a larger commit, as we still have
backends and code in GTK trying to access GdkEvent structures directly.
Additionally, the naming of the public getter functions requires
renaming all the data structures to conform to the namespace/type-name
pattern.
2020-04-16 19:54:02 +01:00

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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 "gdk-private.h"
#include "gdkdeviceprivate.h"
#include "gdkdisplayprivate.h"
#include "gdkdragsurfaceprivate.h"
#include "gdkeventsprivate.h"
#include "gdkframeclockidleprivate.h"
#include "gdkglcontextprivate.h"
#include "gdkinternals.h"
#include "gdkintl.h"
#include "gdkmarshalers.h"
#include "gdkpopupprivate.h"
#include "gdkrectangle.h"
#include "gdktoplevelprivate.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 {
POPUP_LAYOUT_CHANGED,
SIZE_CHANGED,
RENDER,
EVENT,
ENTER_MONITOR,
LEAVE_MONITOR,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_CURSOR,
PROP_DISPLAY,
PROP_FRAME_CLOCK,
PROP_MAPPED,
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_layout_popup_helper (GdkSurface *surface,
int width,
int height,
GdkPopupLayout *layout,
GdkRectangle *out_final_rect)
{
GdkDisplay *display;
GdkMonitor *monitor;
GdkRectangle bounds;
GdkRectangle root_rect;
GdkGravity rect_anchor;
GdkGravity surface_anchor;
int rect_anchor_dx;
int rect_anchor_dy;
GdkAnchorHints anchor_hints;
GdkRectangle final_rect;
gboolean flipped_x;
gboolean flipped_y;
int x, y;
g_return_if_fail (GDK_IS_POPUP (surface));
root_rect = *gdk_popup_layout_get_anchor_rect (layout);
gdk_surface_get_root_coords (surface->parent,
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);
rect_anchor = gdk_popup_layout_get_rect_anchor (layout);
surface_anchor = gdk_popup_layout_get_surface_anchor (layout);
gdk_popup_layout_get_offset (layout, &rect_anchor_dx, &rect_anchor_dy);
anchor_hints = gdk_popup_layout_get_anchor_hints (layout);
final_rect.width = width - surface->shadow_left - surface->shadow_right;
final_rect.height = height - surface->shadow_top - surface->shadow_bottom;
final_rect.x = maybe_flip_position (bounds.x,
bounds.width,
root_rect.x,
root_rect.width,
final_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);
final_rect.y = maybe_flip_position (bounds.y,
bounds.height,
root_rect.y,
root_rect.height,
final_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);
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;
}
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 (surface->parent, &x, &y);
final_rect.x -= x;
final_rect.y -= y;
if (flipped_x)
{
rect_anchor = gdk_gravity_flip_horizontally (rect_anchor);
surface_anchor = gdk_gravity_flip_horizontally (surface_anchor);
}
if (flipped_y)
{
rect_anchor = gdk_gravity_flip_vertically (rect_anchor);
surface_anchor = gdk_gravity_flip_vertically (surface_anchor);
}
surface->popup.rect_anchor = rect_anchor;
surface->popup.surface_anchor = surface_anchor;
*out_final_rect = final_rect;
}
static void
gdk_surface_init (GdkSurface *surface)
{
/* 0-initialization is good for all other fields. */
surface->state = GDK_SURFACE_STATE_WITHDRAWN;
surface->fullscreen_mode = GDK_FULLSCREEN_ON_CURRENT_MONITOR;
surface->width = 1;
surface->height = 1;
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_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_MAPPED] =
g_param_spec_boolean ("mapped",
P_("Mapped"),
P_("Mapped"),
FALSE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, LAST_PROP, properties);
/**
* GdkSurface::popup-layout-changed
* @surface: the #GdkSurface that was laid out
*
* Emitted when the layout of a popup @surface has changed, e.g. if the popup
* layout was reactive and after the parent moved causing the popover to end
* up partially off-screen.
*
*/
signals[POPUP_LAYOUT_CHANGED] =
g_signal_new (g_intern_static_string ("popup-layout-changed"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
NULL,
G_TYPE_NONE,
0);
/**
* GdkSurface::size-changed:
* @surface: the #GdkSurface
* @width: the new width
* @height: the new height
*
* Emitted when the size of @surface is changed.
*
* Surface size is reported in ”application pixels”, not
* ”device pixels” (see gdk_surface_get_scale_factor()).
*/
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__POINTER,
G_TYPE_BOOLEAN,
1,
GDK_TYPE_EVENT);
g_signal_set_va_marshaller (signals[EVENT],
G_OBJECT_CLASS_TYPE (object_class),
_gdk_marshal_BOOLEAN__POINTERv);
/**
* GdkSurface::enter-montor:
* @surface: the #GdkSurface
* @monitor: the monitor
*
* Emitted when @surface starts being present on the monitor.
*/
signals[ENTER_MONITOR] =
g_signal_new (g_intern_static_string ("enter-monitor"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
NULL,
G_TYPE_NONE,
1,
GDK_TYPE_MONITOR);
/**
* GdkSurface::leave-montor:
* @surface: the #GdkSurface
* @monitor: the monitor
*
* Emitted when @surface stops being present on the monitor.
*/
signals[LEAVE_MONITOR] =
g_signal_new (g_intern_static_string ("leave-monitor"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
NULL,
G_TYPE_NONE,
1,
GDK_TYPE_MONITOR);
}
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_region)
cairo_region_destroy (surface->input_region);
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_FRAME_CLOCK:
gdk_surface_set_frame_clock (surface, GDK_FRAME_CLOCK (g_value_get_object (value)));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
#define GDK_SURFACE_IS_STICKY(surface) (((surface)->state & GDK_SURFACE_STATE_STICKY))
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_FRAME_CLOCK:
g_value_set_object (value, surface->frame_clock);
break;
case PROP_MAPPED:
g_value_set_boolean (value, GDK_SURFACE_IS_MAPPED (surface));
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)
* @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_show_popup() or later using gdk_surface_layout_popup().
*
* Returns: (transfer full): a new #GdkSurface
*/
GdkSurface *
gdk_surface_new_popup (GdkSurface *parent,
gboolean autohide)
{
GdkSurface *surface;
g_return_val_if_fail (GDK_IS_SURFACE (parent), NULL);
surface = gdk_surface_new (parent->display, GDK_SURFACE_POPUP,
parent, 0, 0, 100, 100);
surface->autohide = autohide;
return surface;
}
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);
if (GDK_IS_TOPLEVEL (surface))
g_object_notify (G_OBJECT (surface), "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_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_mapped:
* @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_get_mapped (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;
}
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 (flags & GDK_HINT_BASE_SIZE)
{
width -= base_width;
height -= base_height;
min_width -= base_width;
min_height -= base_height;
max_width -= base_width;
max_height -= base_height;
}
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;
}
}
if (flags & GDK_HINT_BASE_SIZE)
{
width += base_width;
height += base_height;
}
}
#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;
}
/* 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));
}
/**
* 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);
surface->popup.rect_anchor = 0;
surface->popup.surface_anchor = 0;
surface->x = 0;
surface->y = 0;
}
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.
*
* Surface size is reported in ”application pixels”, not
* ”device pixels” (see gdk_surface_get_scale_factor()).
*
* 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.
*
* Surface size is reported in ”application pixels”, not
* ”device pixels” (see gdk_surface_get_scale_factor()).
*
* 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_set_input_region:
* @surface: a #GdkSurface
* @region: region of surface to be reactive
*
* 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_set_input_region (GdkSurface *surface,
cairo_region_t *region)
{
g_return_if_fail (GDK_IS_SURFACE (surface));
if (GDK_SURFACE_DESTROYED (surface))
return;
if (surface->input_region)
cairo_region_destroy (surface->input_region);
if (region)
surface->input_region = cairo_region_copy (region);
else
surface->input_region = NULL;
GDK_SURFACE_GET_CLASS (surface)->set_input_region (surface, surface->input_region);
}
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;
GdkEventType type;
_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_display_check_grab_ownership (display, device, serial))
{
/* Device events are blocked by another device grab */
unlink_event = TRUE;
goto out;
}
}
event_surface = gdk_event_get_surface (event);
if (!event_surface)
goto out;
type = gdk_event_get_event_type (event);
if (type == GDK_ENTER_NOTIFY)
_gdk_display_set_surface_under_pointer (display, device, event_surface);
else if (type == GDK_LEAVE_NOTIFY)
_gdk_display_set_surface_under_pointer (display, device, NULL);
if (type == GDK_BUTTON_RELEASE ||
type == GDK_TOUCH_CANCEL ||
type == GDK_TOUCH_END)
{
if (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 &&
(gdk_event_get_modifier_state (event) & GDK_ANY_BUTTON_MASK & ~(GDK_BUTTON1_MASK << (gdk_button_event_get_button (event) - 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);
gdk_event_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_begin_resize_drag:
* @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 (GdkSurface *surface,
GdkSurfaceEdge edge,
GdkDevice *device,
gint button,
gint x,
gint y,
guint32 timestamp)
{
if (device == NULL)
{
GdkSeat *seat = gdk_display_get_default_seat (surface->display);
if (button == 0)
device = gdk_seat_get_keyboard (seat);
else
device = gdk_seat_get_pointer (seat);
}
GDK_SURFACE_GET_CLASS (surface)->begin_resize_drag (surface, edge, device, button, x, y, timestamp);
}
/**
* gdk_surface_begin_move_drag:
* @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 (GdkSurface *surface,
GdkDevice *device,
gint button,
gint x,
gint y,
guint32 timestamp)
{
if (device == NULL)
{
GdkSeat *seat = gdk_display_get_default_seat (surface->display);
if (button == 0)
device = gdk_seat_get_keyboard (seat);
else
device = gdk_seat_get_pointer (seat);
}
GDK_SURFACE_GET_CLASS (surface)->begin_move_drag (surface, device, button, x, y, timestamp);
}
/* 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_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. After this call, you
* probably want to set up the drag icon using the surface returned
* by gdk_drag_get_drag_surface().
*
* This function returns a reference to the GdkDrag object, but GTK
* keeps its own reference as well, as long as the DND operation is
* going on.
*
* Note: if @actions include %GDK_ACTION_MOVE, you need to listen for
* the #GdkDrag::dnd-finished signal and delete the data at the source
* if gdk_drag_get_selected_action() returns %GDK_ACTION_MOVE.
*
* 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);
if (surface->frame_clock_events_paused)
{
_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:css-changed 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);
}
void
gdk_surface_set_state (GdkSurface *surface,
GdkSurfaceState new_state)
{
gboolean was_mapped, mapped;
gboolean was_sticky, sticky;
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);
was_sticky = GDK_SURFACE_IS_STICKY (surface);
surface->state = new_state;
mapped = GDK_SURFACE_IS_MAPPED (surface);
sticky = GDK_SURFACE_IS_STICKY (surface);
_gdk_surface_update_viewable (surface);
if (GDK_IS_TOPLEVEL (surface))
g_object_notify (G_OBJECT (surface), "state");
if (was_mapped != mapped)
g_object_notify_by_pspec (G_OBJECT (surface), properties[PROP_MAPPED]);
if (was_sticky != sticky)
g_object_notify (G_OBJECT (surface), "sticky");
}
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 void
add_event_mark (GdkEvent *event,
gint64 time,
guint64 duration)
{
gchar *message = NULL;
const gchar *kind;
GEnumClass *class;
GEnumValue *value;
GdkEventType event_type;
event_type = gdk_event_get_event_type (event);
class = g_type_class_ref (GDK_TYPE_EVENT_TYPE);
value = g_enum_get_value (class, event_type);
g_type_class_unref (class);
kind = value ? value->value_nick : "event";
switch ((int) event_type)
{
case GDK_MOTION_NOTIFY:
{
double x, y;
gdk_event_get_position (event, &x, &y);
message = g_strdup_printf ("%s {x=%lf, y=%lf, state=0x%x}",
kind,
x, y,
gdk_event_get_modifier_state (event));
break;
}
case GDK_BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
{
double x, y;
gdk_event_get_position (event, &x, &y);
message = g_strdup_printf ("%s {button=%u, x=%lf, y=%lf, state=0x%x}",
kind,
gdk_button_event_get_button (event),
x, y,
gdk_event_get_modifier_state (event));
break;
}
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
{
message = g_strdup_printf ("%s {keyval=%u, state=0x%x, keycode=%u layout=%u level=%u is_modifier=%u}",
kind,
gdk_key_event_get_keyval (event),
gdk_event_get_modifier_state (event),
gdk_key_event_get_keycode (event),
gdk_key_event_get_layout (event),
gdk_key_event_get_level (event),
gdk_key_event_is_modifier (event));
break;
}
case GDK_CONFIGURE:
{
int width, height;
gdk_configure_event_get_size (event, &width, &height);
message = g_strdup_printf ("%s {width=%d, height=%d}", kind, width, 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_FOCUS_CHANGE:
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
case GDK_EVENT_LAST:
default:
break;
}
gdk_profiler_add_mark (time, duration, "event", message ? message : kind);
g_free (message);
}
gboolean
gdk_surface_handle_event (GdkEvent *event)
{
gint64 begin_time = g_get_monotonic_time ();
gboolean handled = FALSE;
if (check_autohide (event))
return TRUE;
if (gdk_event_get_event_type (event) == GDK_CONFIGURE)
{
int width, height;
gdk_configure_event_get_size (event, &width, &height);
g_signal_emit (gdk_event_get_surface (event), signals[SIZE_CHANGED], 0,
width, height);
handled = TRUE;
}
else
{
g_signal_emit (gdk_event_get_surface (event), signals[EVENT], 0, event, &handled);
}
if (GDK_PROFILER_IS_RUNNING)
add_event_mark (event, begin_time, g_get_monotonic_time () - begin_time);
return handled;
}
/**
* gdk_surface_translate_coordinates:
* @from: the origin surface
* @to: the target surface
* @x: coordinates to translate
* @y: coordinates to translate
*
* Translates the given coordinates from being
* relative to the @from surface to being relative
* to the @to surface.
*
* Note that this only works if @to and @from are
* popups or transient-for to the same toplevel
* (directly or indirectly).
*
* Returns: %TRUE if the coordinates were successfully
* translated
*/
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;
}
GdkSeat *
gdk_surface_get_seat_from_event (GdkSurface *surface,
GdkEvent *event)
{
if (event)
{
GdkDevice *device = gdk_event_get_device (event);
GdkSeat *seat = NULL;
device = gdk_event_get_device (event);
if (device)
seat = gdk_device_get_seat (device);
if (seat)
return seat;
}
return gdk_display_get_default_seat (surface->display);
}
void
gdk_surface_enter_monitor (GdkSurface *surface,
GdkMonitor *monitor)
{
g_signal_emit (surface, signals[ENTER_MONITOR], 0, monitor);
}
void
gdk_surface_leave_monitor (GdkSurface *surface,
GdkMonitor *monitor)
{
g_signal_emit (surface, signals[LEAVE_MONITOR], 0, monitor);
}
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