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 (broadway_display->output)
 179     {
 180       _gdk_broadway_display_consume_all_input (display);
 181       if (root_x)
 182         *root_x = broadway_display->future_root_x;
 183       if (root_y)
 184         *root_y = broadway_display->future_root_y;
 185       /* TODO: Should really use future_x/y when we get configure events */
 186       if (win_x)
 187         *win_x = broadway_display->future_root_x - toplevel->x;
 188       if (win_y)
 189         *win_y = broadway_display->future_root_y - toplevel->y;
 190       if (mask)
 191         *mask = broadway_display->future_state;
 192       if (child_window)
 193         {
 194           if (gdk_window_get_window_type (toplevel) == GDK_WINDOW_ROOT)
 195             *child_window =
 196               g_hash_table_lookup (broadway_display->id_ht,
 197                                    GINT_TO_POINTER (broadway_display->future_mouse_in_toplevel));
 198           else
 199             *child_window = toplevel; /* No native children */
 200         }
 201       return TRUE;
 202     }
 203
 204   /* Fallback when unconnected */
 205
 206   device_root_x = broadway_display->last_x;
 207   device_root_y = broadway_display->last_y;
 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_root_y - toplevel->x;
 215   if (win_y)
 216     *win_y = device_root_y - toplevel->y;
 217   if (mask)
 218     *mask = broadway_display->last_state;
 219   if (child_window)
 220     {
 221       if (gdk_window_get_window_type (toplevel) == GDK_WINDOW_ROOT)
 222         {
 223           *child_window = broadway_display->mouse_in_toplevel;
 224           if (*child_window == NULL)
 225             *child_window = toplevel;
 226         }
 227       else
 228         {
 229           /* No native children */
 230           *child_window = toplevel;
 231         }
 232     }
 233
 234   return TRUE;
 235 }
 236
 237 static GdkGrabStatus
 238 gdk_broadway_device_grab (GdkDevice    *device,
 239                           GdkWindow    *window,
 240                           gboolean      owner_events,
 241                           GdkEventMask  event_mask,
 242                           GdkWindow    *confine_to,
 243                           GdkCursor    *cursor,
 244                           guint32       time_)
 245 {
 246   GdkDisplay *display;
 247   GdkBroadwayDisplay *broadway_display;
 248
 249   display = gdk_device_get_display (device);
 250   broadway_display = GDK_BROADWAY_DISPLAY (display);
 251
 252   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 253     {
 254       /* Device is a keyboard */
 255       return GDK_GRAB_SUCCESS;
 256     }
 257   else
 258     {
 259       /* Device is a pointer */
 260
 261       if (broadway_display->pointer_grab_window != NULL &&
 262           time_ != 0 && broadway_display->pointer_grab_time > time_)
 263         return GDK_GRAB_ALREADY_GRABBED;
 264
 265       if (time_ == 0)
 266         time_ = broadway_display->last_seen_time;
 267
 268       broadway_display->pointer_grab_window = window;
 269       broadway_display->pointer_grab_owner_events = owner_events;
 270       broadway_display->pointer_grab_time = time_;
 271
 272       if (broadway_display->output)
 273         {
 274           broadway_output_grab_pointer (broadway_display->output,
 275                                         GDK_WINDOW_IMPL_BROADWAY (window->impl)->id,
 276                                         owner_events);
 277           gdk_display_flush (display);
 278         }
 279
 280       /* TODO: What about toplevel grab events if we're not connected? */
 281
 282       return GDK_GRAB_SUCCESS;
 283     }
 284 }
 285
 286 #define TIME_IS_LATER(time1, time2)                        \
 287   ( (( time1 > time2 ) && ( time1 - time2 < ((guint32)-1)/2 )) ||  \
 288     (( time1 < time2 ) && ( time2 - time1 > ((guint32)-1)/2 ))     \
 289   )
 290
 291 static void
 292 gdk_broadway_device_ungrab (GdkDevice *device,
 293                             guint32    time_)
 294 {
 295   GdkDisplay *display;
 296   GdkBroadwayDisplay *broadway_display;
 297   GdkDeviceGrabInfo *grab;
 298   guint32 serial;
 299
 300   display = gdk_device_get_display (device);
 301   broadway_display = GDK_BROADWAY_DISPLAY (display);
 302
 303   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 304     {
 305       /* Device is a keyboard */
 306     }
 307   else
 308     {
 309       /* Device is a pointer */
 310
 311       if (broadway_display->pointer_grab_window != NULL &&
 312           time_ != 0 && broadway_display->pointer_grab_time > time_)
 313         return;
 314
 315       /* TODO: What about toplevel grab events if we're not connected? */
 316
 317       if (broadway_display->output)
 318         {
 319           serial = broadway_output_ungrab_pointer (broadway_display->output);
 320           gdk_display_flush (display);
 321         }
 322       else
 323         {
 324           serial = broadway_display->saved_serial;
 325         }
 326
 327       grab = _gdk_display_get_last_device_grab (display, device);
 328       if (grab &&
 329           (time_ == GDK_CURRENT_TIME ||
 330            grab->time == GDK_CURRENT_TIME ||
 331            !TIME_IS_LATER (grab->time, time_)))
 332         grab->serial_end = serial;
 333
 334       broadway_display->pointer_grab_window = NULL;
 335     }
 336 }
 337
 338 static GdkWindow *
 339 gdk_broadway_device_window_at_position (GdkDevice       *device,
 340                                         gint            *win_x,
 341                                         gint            *win_y,
 342                                         GdkModifierType *mask,
 343                                         gboolean         get_toplevel)
 344 {
 345   gboolean res;
 346   GdkScreen *screen;
 347   GdkWindow *root_window;
 348   GdkWindow *window;
 349
 350   screen = gdk_screen_get_default ();
 351   root_window = gdk_screen_get_root_window (screen);
 352
 353   res = gdk_broadway_device_query_state (device, root_window, NULL, &window, NULL, NULL, win_x, win_y, mask);
 354   if (res)
 355     return window;
 356
 357   return NULL;
 358 }
 359
 360 static void
 361 gdk_broadway_device_select_window_events (GdkDevice    *device,
 362                                           GdkWindow    *window,
 363                                           GdkEventMask  event_mask)
 364 {
 365 }