gtk/gdk/quartz/gdkdevice-core.c

/* 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, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include "config.h"

#import "GdkQuartzView.h"
#include "gdkwindow-quartz.h"
#include "gdkprivate-quartz.h"
#include "gdkdevice-core.h"

static gboolean gdk_device_core_get_history (GdkDevice      *device,
                                             GdkWindow      *window,
                                             guint32         start,
                                             guint32         stop,
                                             GdkTimeCoord ***events,
                                             gint           *n_events);
static void gdk_device_core_get_state (GdkDevice       *device,
                                       GdkWindow       *window,
                                       gdouble         *axes,
                                       GdkModifierType *mask);
static void gdk_device_core_set_window_cursor (GdkDevice *device,
                                               GdkWindow *window,
                                               GdkCursor *cursor);
static void gdk_device_core_warp (GdkDevice *device,
                                  GdkScreen *screen,
                                  gint       x,
                                  gint       y);
static gboolean gdk_device_core_query_state (GdkDevice        *device,
                                             GdkWindow        *window,
                                             GdkWindow       **root_window,
                                             GdkWindow       **child_window,
                                             gint             *root_x,
                                             gint             *root_y,
                                             gint             *win_x,
                                             gint             *win_y,
                                             GdkModifierType  *mask);
static GdkGrabStatus gdk_device_core_grab   (GdkDevice     *device,
                                             GdkWindow     *window,
                                             gboolean       owner_events,
                                             GdkEventMask   event_mask,
                                             GdkWindow     *confine_to,
                                             GdkCursor     *cursor,
                                             guint32        time_);
static void          gdk_device_core_ungrab (GdkDevice     *device,
                                             guint32        time_);
static GdkWindow * gdk_device_core_window_at_position (GdkDevice       *device,
                                                       gint            *win_x,
                                                       gint            *win_y,
                                                       GdkModifierType *mask,
                                                       gboolean         get_toplevel);
static void      gdk_device_core_select_window_events (GdkDevice       *device,
                                                       GdkWindow       *window,
                                                       GdkEventMask     event_mask);


G_DEFINE_TYPE (GdkDeviceCore, gdk_device_core, GDK_TYPE_DEVICE)

static void
gdk_device_core_class_init (GdkDeviceCoreClass *klass)
{
  GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);

  device_class->get_history = gdk_device_core_get_history;
  device_class->get_state = gdk_device_core_get_state;
  device_class->set_window_cursor = gdk_device_core_set_window_cursor;
  device_class->warp = gdk_device_core_warp;
  device_class->query_state = gdk_device_core_query_state;
  device_class->grab = gdk_device_core_grab;
  device_class->ungrab = gdk_device_core_ungrab;
  device_class->window_at_position = gdk_device_core_window_at_position;
  device_class->select_window_events = gdk_device_core_select_window_events;
}

static void
gdk_device_core_init (GdkDeviceCore *device_core)
{
  GdkDevice *device;

  device = GDK_DEVICE (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_device_core_get_history (GdkDevice      *device,
                             GdkWindow      *window,
                             guint32         start,
                             guint32         stop,
                             GdkTimeCoord ***events,
                             gint           *n_events)
{
  return FALSE;
}

static void
gdk_device_core_get_state (GdkDevice       *device,
                           GdkWindow       *window,
                           gdouble         *axes,
                           GdkModifierType *mask)
{
  gint x_int, y_int;

  gdk_window_get_pointer (window, &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_device_core_set_window_cursor (GdkDevice *device,
                                   GdkWindow *window,
                                   GdkCursor *cursor)
{
  GdkCursorPrivate *cursor_private;
  NSCursor *nscursor;

  cursor_private = (GdkCursorPrivate*) cursor;

  if (GDK_WINDOW_DESTROYED (window))
    return;

  if (!cursor)
    nscursor = [NSCursor arrowCursor];
  else
    nscursor = cursor_private->nscursor;

  [nscursor set];
}

static void
gdk_device_core_warp (GdkDevice *device,
                      GdkScreen *screen,
                      gint       x,
                      gint       y)
{
  CGDisplayMoveCursorToPoint (CGMainDisplayID (), CGPointMake (x, y));
}

static GdkWindow *
gdk_device_core_query_state_helper (GdkWindow       *window,
                                    GdkDevice       *device,
                                    gint            *x,
                                    gint            *y,
                                    GdkModifierType *mask)
{
  GdkWindowObject *toplevel;
  GdkWindowObject *private;
  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_OBJECT (gdk_window_get_effective_toplevel (window));

  *mask = _gdk_quartz_events_get_current_event_mask ();

  /* 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
    {
      GdkWindowImplQuartz *impl;
      NSWindow *nswindow;

      impl = GDK_WINDOW_IMPL_QUARTZ (toplevel->impl);
      private = GDK_WINDOW_OBJECT (toplevel);
      nswindow = impl->toplevel;

      point = [nswindow mouseLocationOutsideOfEventStream];

      x_tmp = point.x;
      y_tmp = private->height - point.y;

      window = (GdkWindow *)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);

  *x = x_tmp;
  *y = y_tmp;

  return found_window;
}

static gboolean
gdk_device_core_query_state (GdkDevice        *device,
                             GdkWindow        *window,
                             GdkWindow       **root_window,
                             GdkWindow       **child_window,
                             gint             *root_x,
                             gint             *root_y,
                             gint             *win_x,
                             gint             *win_y,
                             GdkModifierType  *mask)
{
  GdkDisplay *display;
  GdkWindow *found_window;
  NSPoint point;
  gint x_tmp, y_tmp;

  found_window = gdk_device_core_query_state_helper (window, device,
                                                     win_x, win_y,
                                                     mask);
  if (!found_window)
    return FALSE;

  display = gdk_window_get_display (window);

  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;

  return TRUE;
}

static GdkGrabStatus
gdk_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_device_core_ungrab (GdkDevice *device,
                        guint32    time_)
{
  /* Should remain empty */
}

static GdkWindow *
gdk_device_core_window_at_position (GdkDevice       *device,
                                    gint            *win_x,
                                    gint            *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_event_mask ();

  return found_window;
}

static void
gdk_device_core_select_window_events (GdkDevice    *device,
                                      GdkWindow    *window,
                                      GdkEventMask  event_mask)
{
  /* The mask is set in the common code. */
}