Pileus Git - ~andy/gtk/blob - gdk/broadway/gdkdevice-broadway.c

   1 /* GDK - The GIMP Drawing Kit
   2  * Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21 #include <stdlib.h>
  22
  23 #include "gdkdevice-broadway.h"
  24
  25 #include "gdkwindow.h"
  26 #include "gdkprivate-broadway.h"
  27
  28 static gboolean gdk_broadway_device_get_history (GdkDevice      *device,
  29                                                  GdkWindow      *window,
  30                                                  guint32         start,
  31                                                  guint32         stop,
  32                                                  GdkTimeCoord ***events,
  33                                                  gint           *n_events);
  34 static void gdk_broadway_device_get_state (GdkDevice       *device,
  35                                            GdkWindow       *window,
  36                                            gdouble         *axes,
  37                                            GdkModifierType *mask);
  38 static void gdk_broadway_device_set_window_cursor (GdkDevice *device,
  39                                                    GdkWindow *window,
  40                                                    GdkCursor *cursor);
  41 static void gdk_broadway_device_warp (GdkDevice *device,
  42                                       GdkScreen *screen,
  43                                       gint       x,
  44                                       gint       y);
  45 static gboolean gdk_broadway_device_query_state (GdkDevice        *device,
  46                                                  GdkWindow        *window,
  47                                                  GdkWindow       **root_window,
  48                                                  GdkWindow       **child_window,
  49                                                  gint             *root_x,
  50                                                  gint             *root_y,
  51                                                  gint             *win_x,
  52                                                  gint             *win_y,
  53                                                  GdkModifierType  *mask);
  54 static GdkGrabStatus gdk_broadway_device_grab   (GdkDevice     *device,
  55                                                  GdkWindow     *window,
  56                                                  gboolean       owner_events,
  57                                                  GdkEventMask   event_mask,
  58                                                  GdkWindow     *confine_to,
  59                                                  GdkCursor     *cursor,
  60                                                  guint32        time_);
  61 static void          gdk_broadway_device_ungrab (GdkDevice     *device,
  62                                                  guint32        time_);
  63 static GdkWindow * gdk_broadway_device_window_at_position (GdkDevice       *device,
  64                                                            gint            *win_x,
  65                                                            gint            *win_y,
  66                                                            GdkModifierType *mask,
  67                                                            gboolean         get_toplevel);
  68 static void      gdk_broadway_device_select_window_events (GdkDevice       *device,
  69                                                            GdkWindow       *window,
  70                                                            GdkEventMask     event_mask);
  71
  72
  73 G_DEFINE_TYPE (GdkBroadwayDevice, gdk_broadway_device, GDK_TYPE_DEVICE)
  74
  75 static void
  76 gdk_broadway_device_class_init (GdkBroadwayDeviceClass *klass)
  77 {
  78   GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
  79
  80   device_class->get_history = gdk_broadway_device_get_history;
  81   device_class->get_state = gdk_broadway_device_get_state;
  82   device_class->set_window_cursor = gdk_broadway_device_set_window_cursor;
  83   device_class->warp = gdk_broadway_device_warp;
  84   device_class->query_state = gdk_broadway_device_query_state;
  85   device_class->grab = gdk_broadway_device_grab;
  86   device_class->ungrab = gdk_broadway_device_ungrab;
  87   device_class->window_at_position = gdk_broadway_device_window_at_position;
  88   device_class->select_window_events = gdk_broadway_device_select_window_events;
  89 }
  90
  91 static void
  92 gdk_broadway_device_init (GdkBroadwayDevice *device_core)
  93 {
  94   GdkDevice *device;
  95
  96   device = GDK_DEVICE (device_core);
  97
  98   _gdk_device_add_axis (device, GDK_NONE, GDK_AXIS_X, 0, 0, 1);
  99   _gdk_device_add_axis (device, GDK_NONE, GDK_AXIS_Y, 0, 0, 1);
 100 }
 101
 102 static gboolean
 103 gdk_broadway_device_get_history (GdkDevice      *device,
 104                                  GdkWindow      *window,
 105                                  guint32         start,
 106                                  guint32         stop,
 107                                  GdkTimeCoord ***events,
 108                                  gint           *n_events)
 109 {
 110   return FALSE;
 111 }
 112
 113 static void
 114 gdk_broadway_device_get_state (GdkDevice       *device,
 115                                GdkWindow       *window,
 116                                gdouble         *axes,
 117                                GdkModifierType *mask)
 118 {
 119   gint x_int, y_int;
 120
 121   gdk_window_get_pointer (window, &x_int, &y_int, mask);
 122
 123   if (axes)
 124     {
 125       axes[0] = x_int;
 126       axes[1] = y_int;
 127     }
 128 }
 129
 130 static void
 131 gdk_broadway_device_set_window_cursor (GdkDevice *device,
 132                                        GdkWindow *window,
 133                                        GdkCursor *cursor)
 134 {
 135 }
 136
 137 static void
 138 gdk_broadway_device_warp (GdkDevice *device,
 139                           GdkScreen *screen,
 140                           gint       x,
 141                           gint       y)
 142 {
 143 }
 144
 145 static gboolean
 146 gdk_broadway_device_query_state (GdkDevice        *device,
 147                                  GdkWindow        *window,
 148                                  GdkWindow       **root_window,
 149                                  GdkWindow       **child_window,
 150                                  gint             *root_x,
 151                                  gint             *root_y,
 152                                  gint             *win_x,
 153                                  gint             *win_y,
 154                                  GdkModifierType  *mask)
 155 {
 156   GdkWindow *toplevel;
 157   GdkWindowImplBroadway *impl;
 158   GdkDisplay *display;
 159   GdkBroadwayDisplay *broadway_display;
 160   GdkScreen *screen;
 161   gint device_root_x, device_root_y;
 162
 163   if (gdk_device_get_source (device) != GDK_SOURCE_MOUSE)
 164     return FALSE;
 165
 166   display = gdk_device_get_display (device);
 167   broadway_display = GDK_BROADWAY_DISPLAY (display);
 168
 169   impl = GDK_WINDOW_IMPL_BROADWAY (window->impl);
 170   toplevel = impl->wrapper;
 171
 172   if (root_window)
 173     {
 174       screen = gdk_window_get_screen (window);
 175       *root_window = gdk_screen_get_root_window (screen);
 176     }
 177
 178   if (mask)
 179     *mask = 0; /* TODO */
 180
 181   if (broadway_display->output)
 182     {
 183       _gdk_broadway_display_consume_all_input (display);
 184       if (root_x)
 185         *root_x = broadway_display->future_root_x;
 186       if (root_y)
 187         *root_y = broadway_display->future_root_y;
 188       /* TODO: Should really use future_x/y when we get configure events */
 189       if (win_x)
 190         *win_x = broadway_display->future_root_x - toplevel->x;
 191       if (win_y)
 192         *win_y = broadway_display->future_root_y - toplevel->y;
 193       if (child_window)
 194         {
 195           if (gdk_window_get_window_type (toplevel) == GDK_WINDOW_ROOT)
 196             *child_window =
 197               g_hash_table_lookup (broadway_display->id_ht,
 198                                    GINT_TO_POINTER (broadway_display->future_mouse_in_toplevel));
 199           else
 200             *child_window = toplevel; /* No native children */
 201         }
 202       return TRUE;
 203     }
 204
 205   /* Fallback when unconnected */
 206
 207   device_root_x = broadway_display->last_x;
 208   device_root_y = broadway_display->last_y;
 209
 210   if (root_x)
 211     *root_x = device_root_x;
 212   if (root_y)
 213     *root_y = device_root_y;
 214   if (win_x)
 215     *win_x = device_root_y - toplevel->x;
 216   if (win_y)
 217     *win_y = device_root_y - toplevel->y;
 218   if (child_window)
 219     {
 220       if (gdk_window_get_window_type (toplevel) == GDK_WINDOW_ROOT)
 221         {
 222           *child_window = broadway_display->mouse_in_toplevel;
 223           if (*child_window == NULL)
 224             *child_window = toplevel;
 225         }
 226       else
 227         {
 228           /* No native children */
 229           *child_window = toplevel;
 230         }
 231     }
 232
 233   return TRUE;
 234 }
 235
 236 static GdkGrabStatus
 237 gdk_broadway_device_grab (GdkDevice    *device,
 238                           GdkWindow    *window,
 239                           gboolean      owner_events,
 240                           GdkEventMask  event_mask,
 241                           GdkWindow    *confine_to,
 242                           GdkCursor    *cursor,
 243                           guint32       time_)
 244 {
 245   GdkDisplay *display;
 246   GdkBroadwayDisplay *broadway_display;
 247
 248   display = gdk_device_get_display (device);
 249   broadway_display = GDK_BROADWAY_DISPLAY (display);
 250
 251   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 252     {
 253       /* Device is a keyboard */
 254       return GDK_GRAB_SUCCESS;
 255     }
 256   else
 257     {
 258       /* Device is a pointer */
 259
 260       if (broadway_display->pointer_grab_window != NULL &&
 261           time_ != 0 && broadway_display->pointer_grab_time > time_)
 262         return GDK_GRAB_ALREADY_GRABBED;
 263
 264       if (time_ == 0)
 265         time_ = broadway_display->last_event_time;
 266
 267       broadway_display->pointer_grab_window = window;
 268       broadway_display->pointer_grab_owner_events = owner_events;
 269       broadway_display->pointer_grab_time = time_;
 270
 271       if (broadway_display->output)
 272         {
 273           broadway_output_grab_pointer (broadway_display->output,
 274                                         GDK_WINDOW_IMPL_BROADWAY (window->impl)->id,
 275                                         owner_events);
 276           gdk_display_flush (display);
 277         }
 278
 279       /* TODO: What about toplevel grab events if we're not connected? */
 280
 281       return GDK_GRAB_SUCCESS;
 282     }
 283 }
 284
 285 #define TIME_IS_LATER(time1, time2)                        \
 286   ( (( time1 > time2 ) && ( time1 - time2 < ((guint32)-1)/2 )) ||  \
 287     (( time1 < time2 ) && ( time2 - time1 > ((guint32)-1)/2 ))     \
 288   )
 289
 290 static void
 291 gdk_broadway_device_ungrab (GdkDevice *device,
 292                             guint32    time_)
 293 {
 294   GdkDisplay *display;
 295   GdkBroadwayDisplay *broadway_display;
 296   GdkDeviceGrabInfo *grab;
 297   guint32 serial;
 298
 299   display = gdk_device_get_display (device);
 300   broadway_display = GDK_BROADWAY_DISPLAY (display);
 301
 302   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 303     {
 304       /* Device is a keyboard */
 305     }
 306   else
 307     {
 308       /* Device is a pointer */
 309
 310       if (broadway_display->pointer_grab_window != NULL &&
 311           time_ != 0 && broadway_display->pointer_grab_time > time_)
 312         return;
 313
 314       /* TODO: What about toplevel grab events if we're not connected? */
 315
 316       if (broadway_display->output)
 317         {
 318           serial = broadway_output_ungrab_pointer (broadway_display->output);
 319           gdk_display_flush (display);
 320         }
 321       else
 322         {
 323           serial = broadway_display->saved_serial;
 324         }
 325
 326       grab = _gdk_display_get_last_device_grab (display, device);
 327       if (grab &&
 328           (time_ == GDK_CURRENT_TIME ||
 329            grab->time == GDK_CURRENT_TIME ||
 330            !TIME_IS_LATER (grab->time, time_)))
 331         grab->serial_end = serial;
 332
 333       broadway_display->pointer_grab_window = NULL;
 334     }
 335 }
 336
 337 static GdkWindow *
 338 gdk_broadway_device_window_at_position (GdkDevice       *device,
 339                                         gint            *win_x,
 340                                         gint            *win_y,
 341                                         GdkModifierType *mask,
 342                                         gboolean         get_toplevel)
 343 {
 344   gboolean res;
 345   GdkScreen *screen;
 346   GdkWindow *root_window;
 347   GdkWindow *window;
 348
 349   screen = gdk_screen_get_default ();
 350   root_window = gdk_screen_get_root_window (screen);
 351
 352   res = gdk_broadway_device_query_state (device, root_window, NULL, &window, NULL, NULL, win_x, win_y, mask);
 353   if (res)
 354     return window;
 355
 356   return NULL;
 357 }
 358
 359 static void
 360 gdk_broadway_device_select_window_events (GdkDevice    *device,
 361                                           GdkWindow    *window,
 362                                           GdkEventMask  event_mask)
 363 {
 364 }