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gtk3/gdk/quartz/gdkdevice-core-quartz.c
John Ralls a2c54c739e [quartz] Ensure valid GdkWindowImplQuartz references. 
In case of an offscreen window find its onscreen embedder, and NULL
any GdkWindowImpl that's not quartz, checking all return values.

This replaces 16ded683, removing its unnecessary search_for_nearest
functions.

Any unchecked cast of a GdkWindowImpl to GdkWindowImplQuartz risks at
least getting an invalid member reference, not just the ones in
gdk_quartz_window_get_foo, and all calls to gdk_quartz_window_get_foo need
to be checked, not just Gtk's internal calls. The motivation was that
transient_for was getting set on a Gimp offscreen window and that caused a
crash in raise_transient.
2022-06-09 13:22:59 -07:00

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
* Copyright (C) 2010 Kristian Rietveld <kris@gtk.org>
*
* 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/>.
*/
#include "config.h"
#include <gdk/gdkdeviceprivate.h>
#include <gdk/gdkdisplayprivate.h>
#import "GdkQuartzView.h"
#include "gdkquartzwindow.h"
#include "gdkquartzcursor.h"
#include "gdkprivate-quartz.h"
#include "gdkquartzdevice-core.h"
#include "gdkinternal-quartz.h"
#include "gdkquartz-cocoa-access.h"
struct _GdkQuartzDeviceCore
{
GdkDevice parent_instance;
gboolean active;
NSUInteger device_id;
unsigned long long unique_id;
};
struct _GdkQuartzDeviceCoreClass
{
GdkDeviceClass parent_class;
};
static gboolean gdk_quartz_device_core_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
gint *n_events);
static void gdk_quartz_device_core_get_state (GdkDevice *device,
GdkWindow *window,
gdouble *axes,
GdkModifierType *mask);
static void gdk_quartz_device_core_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor);
static void gdk_quartz_device_core_warp (GdkDevice *device,
GdkScreen *screen,
gdouble x,
gdouble y);
static void gdk_quartz_device_core_query_state (GdkDevice *device,
GdkWindow *window,
GdkWindow **root_window,
GdkWindow **child_window,
gdouble *root_x,
gdouble *root_y,
gdouble *win_x,
gdouble *win_y,
GdkModifierType *mask);
static GdkGrabStatus gdk_quartz_device_core_grab (GdkDevice *device,
GdkWindow *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkWindow *confine_to,
GdkCursor *cursor,
guint32 time_);
static void gdk_quartz_device_core_ungrab (GdkDevice *device,
guint32 time_);
static GdkWindow * gdk_quartz_device_core_window_at_position (GdkDevice *device,
gdouble *win_x,
gdouble *win_y,
GdkModifierType *mask,
gboolean get_toplevel);
static void gdk_quartz_device_core_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask event_mask);
G_DEFINE_TYPE (GdkQuartzDeviceCore, gdk_quartz_device_core, GDK_TYPE_DEVICE)
static void
gdk_quartz_device_core_class_init (GdkQuartzDeviceCoreClass *klass)
{
GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
device_class->get_history = gdk_quartz_device_core_get_history;
device_class->get_state = gdk_quartz_device_core_get_state;
device_class->set_window_cursor = gdk_quartz_device_core_set_window_cursor;
device_class->warp = gdk_quartz_device_core_warp;
device_class->query_state = gdk_quartz_device_core_query_state;
device_class->grab = gdk_quartz_device_core_grab;
device_class->ungrab = gdk_quartz_device_core_ungrab;
device_class->window_at_position = gdk_quartz_device_core_window_at_position;
device_class->select_window_events = gdk_quartz_device_core_select_window_events;
}
static void
gdk_quartz_device_core_init (GdkQuartzDeviceCore *quartz_device_core)
{
GdkDevice *device;
device = GDK_DEVICE (quartz_device_core);
_gdk_device_add_axis (device, GDK_NONE, GDK_AXIS_X, 0, 0, 1);
_gdk_device_add_axis (device, GDK_NONE, GDK_AXIS_Y, 0, 0, 1);
}
static gboolean
gdk_quartz_device_core_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
gint *n_events)
{
return FALSE;
}
static void
gdk_quartz_device_core_get_state (GdkDevice *device,
GdkWindow *window,
gdouble *axes,
GdkModifierType *mask)
{
gint x_int, y_int;
gdk_window_get_device_position (window, device, &x_int, &y_int, mask);
if (axes)
{
axes[0] = x_int;
axes[1] = y_int;
}
}
static void
translate_coords_to_child_coords (GdkWindow *parent,
GdkWindow *child,
gint *x,
gint *y)
{
GdkWindow *current = child;
if (child == parent)
return;
while (current != parent)
{
gint tmp_x, tmp_y;
gdk_window_get_origin (current, &tmp_x, &tmp_y);
*x -= tmp_x;
*y -= tmp_y;
current = gdk_window_get_effective_parent (current);
}
}
static void
gdk_quartz_device_core_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor)
{
NSCursor *nscursor;
if (GDK_WINDOW_DESTROYED (window))
return;
nscursor = _gdk_quartz_cursor_get_ns_cursor (cursor);
[nscursor set];
}
static void
gdk_quartz_device_core_warp (GdkDevice *device,
GdkScreen *screen,
gdouble x,
gdouble y)
{
CGDisplayMoveCursorToPoint (CGMainDisplayID (), CGPointMake (x, y));
}
static GdkWindow *
gdk_quartz_device_core_query_state_helper (GdkWindow *window,
GdkDevice *device,
gdouble *x,
gdouble *y,
GdkModifierType *mask)
{
GdkWindow *toplevel;
NSPoint point;
gint x_tmp, y_tmp;
GdkWindow *found_window;
g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
if (GDK_WINDOW_DESTROYED (window))
{
*x = 0;
*y = 0;
*mask = 0;
return NULL;
}
toplevel = gdk_window_get_effective_toplevel (window);
if (mask)
*mask = _gdk_quartz_events_get_current_keyboard_modifiers () |
_gdk_quartz_events_get_current_mouse_modifiers ();
/* Get the y coordinate, needs to be flipped. */
if (window == _gdk_root)
{
point = [NSEvent mouseLocation];
_gdk_quartz_window_nspoint_to_gdk_xy (point, &x_tmp, &y_tmp);
}
else
{
NSWindow *nswindow;
nswindow = gdk_quartz_window_get_nswindow (window);
point = [nswindow mouseLocationOutsideOfEventStream];
x_tmp = point.x;
y_tmp = toplevel->height - point.y;
window = toplevel;
}
found_window = _gdk_quartz_window_find_child (window, x_tmp, y_tmp,
FALSE);
if (found_window == _gdk_root)
found_window = NULL;
else if (found_window)
translate_coords_to_child_coords (window, found_window,
&x_tmp, &y_tmp);
if (x)
*x = x_tmp;
if (y)
*y = y_tmp;
return found_window;
}
static void
gdk_quartz_device_core_query_state (GdkDevice *device,
GdkWindow *window,
GdkWindow **root_window,
GdkWindow **child_window,
gdouble *root_x,
gdouble *root_y,
gdouble *win_x,
gdouble *win_y,
GdkModifierType *mask)
{
GdkWindow *found_window;
NSPoint point;
gint x_tmp, y_tmp;
found_window = gdk_quartz_device_core_query_state_helper (window, device,
win_x, win_y,
mask);
if (root_window)
*root_window = _gdk_root;
if (child_window)
*child_window = found_window;
point = [NSEvent mouseLocation];
_gdk_quartz_window_nspoint_to_gdk_xy (point, &x_tmp, &y_tmp);
if (root_x)
*root_x = x_tmp;
if (root_y)
*root_y = y_tmp;
}
static GdkGrabStatus
gdk_quartz_device_core_grab (GdkDevice *device,
GdkWindow *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkWindow *confine_to,
GdkCursor *cursor,
guint32 time_)
{
/* Should remain empty */
return GDK_GRAB_SUCCESS;
}
static void
gdk_quartz_device_core_ungrab (GdkDevice *device,
guint32 time_)
{
GdkDeviceGrabInfo *grab;
grab = _gdk_display_get_last_device_grab (_gdk_display, device);
if (grab)
grab->serial_end = 0;
_gdk_display_device_grab_update (_gdk_display, device, NULL, 0);
}
static GdkWindow *
gdk_quartz_device_core_window_at_position (GdkDevice *device,
gdouble *win_x,
gdouble *win_y,
GdkModifierType *mask,
gboolean get_toplevel)
{
GdkDisplay *display;
GdkScreen *screen;
GdkWindow *found_window;
NSPoint point;
gint x_tmp, y_tmp;
display = gdk_device_get_display (device);
screen = gdk_display_get_default_screen (display);
/* Get mouse coordinates, find window under the mouse pointer */
point = [NSEvent mouseLocation];
_gdk_quartz_window_nspoint_to_gdk_xy (point, &x_tmp, &y_tmp);
found_window = _gdk_quartz_window_find_child (_gdk_root, x_tmp, y_tmp,
get_toplevel);
if (found_window)
translate_coords_to_child_coords (_gdk_root, found_window,
&x_tmp, &y_tmp);
if (win_x)
*win_x = found_window ? x_tmp : -1;
if (win_y)
*win_y = found_window ? y_tmp : -1;
if (mask)
*mask = _gdk_quartz_events_get_current_keyboard_modifiers () |
_gdk_quartz_events_get_current_mouse_modifiers ();
return found_window;
}
static void
gdk_quartz_device_core_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask event_mask)
{
/* The mask is set in the common code. */
}
void
_gdk_quartz_device_core_set_active (GdkDevice *device,
gboolean active,
NSUInteger device_id)
{
GdkQuartzDeviceCore *self = GDK_QUARTZ_DEVICE_CORE (device);
self->active = active;
self->device_id = device_id;
}
gboolean
_gdk_quartz_device_core_is_active (GdkDevice *device,
NSUInteger device_id)
{
GdkQuartzDeviceCore *self = GDK_QUARTZ_DEVICE_CORE (device);
return (self->active && self->device_id == device_id);
}
void
_gdk_quartz_device_core_set_unique (GdkDevice *device,
unsigned long long unique_id)
{
GDK_QUARTZ_DEVICE_CORE (device)->unique_id = unique_id;
}
unsigned long long
_gdk_quartz_device_core_get_unique (GdkDevice *device)
{
return GDK_QUARTZ_DEVICE_CORE (device)->unique_id;
}
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