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   GdkDisplay *display;
 157   GdkBroadwayDisplay *broadway_display;
 158   GdkWindowImplBroadway *impl;
 159   guint32 serial;
 160   GdkScreen *screen;
 161   char *reply;
 162   gint device_root_x, device_root_y, device_win_x, device_win_y, id;
 163
 164   if (gdk_device_get_source (device) != GDK_SOURCE_MOUSE)
 165     return FALSE;
 166
 167   display = gdk_device_get_display (device);
 168   broadway_display = GDK_BROADWAY_DISPLAY (display);
 169
 170   if (root_window)
 171     {
 172       screen = gdk_window_get_screen (window);
 173       *root_window = gdk_screen_get_root_window (screen);
 174     }
 175
 176   if (mask)
 177     *mask = 0; /* TODO */
 178
 179   if (broadway_display->output)
 180     {
 181       impl = GDK_WINDOW_IMPL_BROADWAY (window->impl);
 182
 183       serial = broadway_output_query_pointer (broadway_display->output, impl->id);
 184
 185       reply = _gdk_broadway_display_block_for_input (display, 'q', serial, TRUE);
 186
 187       if (reply != NULL)
 188         {
 189           char *p;
 190           char cmd;
 191           guint32 reply_serial;
 192
 193           p = reply;
 194
 195           cmd = *p++;
 196           reply_serial = (guint32)strtol(p, &p, 10);
 197           p++; /* Skip , */
 198
 199           device_root_x = strtol(p, &p, 10);
 200           p++; /* Skip , */
 201           device_root_y = strtol(p, &p, 10);
 202           p++; /* Skip , */
 203           device_win_x = strtol(p, &p, 10);
 204           p++; /* Skip , */
 205           device_win_y = strtol(p, &p, 10);
 206           p++; /* Skip , */
 207           id = strtol(p, &p, 10);
 208
 209           if (root_x)
 210             *root_x = device_root_x;
 211           if (root_y)
 212             *root_y = device_root_y;
 213           if (win_x)
 214             *win_x = device_win_x;
 215           if (win_y)
 216             *win_y = device_win_y;
 217           if (child_window)
 218             {
 219               if (gdk_window_get_window_type (window) == GDK_WINDOW_ROOT)
 220                 *child_window = g_hash_table_lookup (broadway_display->id_ht, GINT_TO_POINTER (id));
 221               else
 222                 *child_window = window; /* No native children */
 223             }
 224           g_free (reply);
 225           return TRUE;
 226         }
 227     }
 228
 229   /* Fallback when unconnected */
 230
 231   device_root_x = broadway_display->last_x;
 232   device_root_y = broadway_display->last_y;
 233
 234   if (root_x)
 235     *root_x = device_root_x;
 236   if (root_y)
 237     *root_y = device_root_y;
 238   if (win_x)
 239     *win_x = device_root_y - window->x;
 240   if (win_y)
 241     *win_y = device_root_y - window->y;
 242   if (child_window)
 243     {
 244       if (gdk_window_get_window_type (window) == GDK_WINDOW_ROOT)
 245         {
 246           *child_window = broadway_display->mouse_in_toplevel;
 247           if (*child_window == NULL)
 248             *child_window = window;
 249         }
 250       else
 251         {
 252           /* No native children */
 253           *child_window = window;
 254         }
 255     }
 256
 257   return TRUE;
 258 }
 259
 260 static GdkGrabStatus
 261 gdk_broadway_device_grab (GdkDevice    *device,
 262                           GdkWindow    *window,
 263                           gboolean      owner_events,
 264                           GdkEventMask  event_mask,
 265                           GdkWindow    *confine_to,
 266                           GdkCursor    *cursor,
 267                           guint32       time_)
 268 {
 269   GdkDisplay *display;
 270   GdkBroadwayDisplay *broadway_display;
 271   GdkWindowImplBroadway *impl;
 272   guint32 serial;
 273   char *reply;
 274
 275   display = gdk_device_get_display (device);
 276   broadway_display = GDK_BROADWAY_DISPLAY (display);
 277
 278   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 279     {
 280       /* Device is a keyboard */
 281       return GDK_GRAB_SUCCESS;
 282     }
 283   else
 284     {
 285       /* Device is a pointer */
 286
 287       if (broadway_display->output)
 288         {
 289           impl = GDK_WINDOW_IMPL_BROADWAY (window->impl);
 290
 291           serial = broadway_output_grab_pointer (broadway_display->output,
 292                                                  impl->id, owner_events, time_);
 293           reply = _gdk_broadway_display_block_for_input (display, 'g', serial, FALSE);
 294           if (reply != NULL)
 295             {
 296               char *p;
 297               char cmd;
 298               guint32 reply_serial;
 299               int res;
 300
 301               p = reply;
 302
 303               cmd = *p++;
 304               reply_serial = (guint32)strtol(p, &p, 10);
 305               p++; /* Skip , */
 306
 307               res = strtol(p, &p, 10);
 308
 309               return res;
 310             }
 311         }
 312
 313       return GDK_GRAB_NOT_VIEWABLE;
 314     }
 315 }
 316
 317 #define TIME_IS_LATER(time1, time2)                        \
 318   ( (( time1 > time2 ) && ( time1 - time2 < ((guint32)-1)/2 )) ||  \
 319     (( time1 < time2 ) && ( time2 - time1 > ((guint32)-1)/2 ))     \
 320   )
 321
 322 static void
 323 gdk_broadway_device_ungrab (GdkDevice *device,
 324                             guint32    time_)
 325 {
 326   GdkDisplay *display;
 327   GdkBroadwayDisplay *broadway_display;
 328   GdkDeviceGrabInfo *grab;
 329   guint32 serial;
 330
 331   display = gdk_device_get_display (device);
 332   broadway_display = GDK_BROADWAY_DISPLAY (display);
 333
 334   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 335     {
 336       /* Device is a keyboard */
 337     }
 338   else
 339     {
 340       /* Device is a pointer */
 341
 342       if (broadway_display->output)
 343         {
 344           serial = broadway_output_ungrab_pointer (broadway_display->output, time_);
 345
 346           gdk_display_flush (display);
 347
 348           grab = _gdk_display_get_last_device_grab (display, device);
 349           if (grab &&
 350               (time_ == GDK_CURRENT_TIME ||
 351                grab->time == GDK_CURRENT_TIME ||
 352                !TIME_IS_LATER (grab->time, time_)))
 353             grab->serial_end = serial;
 354         }
 355     }
 356 }
 357
 358 static GdkWindow *
 359 gdk_broadway_device_window_at_position (GdkDevice       *device,
 360                                         gint            *win_x,
 361                                         gint            *win_y,
 362                                         GdkModifierType *mask,
 363                                         gboolean         get_toplevel)
 364 {
 365   gboolean res;
 366   GdkScreen *screen;
 367   GdkWindow *root_window;
 368   GdkWindow *window;
 369
 370   screen = gdk_screen_get_default ();
 371   root_window = gdk_screen_get_root_window (screen);
 372
 373   res = gdk_broadway_device_query_state (device, root_window, NULL, &window, NULL, NULL, win_x, win_y, mask);
 374   if (res)
 375     return window;
 376
 377   return NULL;
 378 }
 379
 380 static void
 381 gdk_broadway_device_select_window_events (GdkDevice    *device,
 382                                           GdkWindow    *window,
 383                                           GdkEventMask  event_mask)
 384 {
 385 }