1 /* GDK - The GIMP Drawing Kit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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.
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.
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.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
29 #include <X11/Xutil.h>
34 #include "gdkprivate.h"
35 #include "gdkinputprivate.h"
36 #include "gdkscreen-x11.h"
37 #include "gdkdisplay-x11.h"
39 static GdkDeviceAxis gdk_input_core_axes[] = {
45 _gdk_init_input_core (GdkDisplay *display)
47 GdkDevicePrivate *private;
49 display->core_pointer = g_object_new (GDK_TYPE_DEVICE, NULL);
50 private = (GdkDevicePrivate *)display->core_pointer;
52 display->core_pointer->name = "Core Pointer";
53 display->core_pointer->source = GDK_SOURCE_MOUSE;
54 display->core_pointer->mode = GDK_MODE_SCREEN;
55 display->core_pointer->has_cursor = TRUE;
56 display->core_pointer->num_axes = 2;
57 display->core_pointer->axes = gdk_input_core_axes;
58 display->core_pointer->num_keys = 0;
59 display->core_pointer->keys = NULL;
61 private->display = display;
65 gdk_device_get_type (void)
67 static GType object_type = 0;
71 static const GTypeInfo object_info =
73 sizeof (GdkDeviceClass),
75 (GBaseFinalizeFunc) NULL,
76 (GClassInitFunc) NULL,
77 NULL, /* class_finalize */
78 NULL, /* class_data */
79 sizeof (GdkDevicePrivate),
81 (GInstanceInitFunc) NULL,
84 object_type = g_type_register_static (G_TYPE_OBJECT,
95 * Returns the list of available input devices for the default display.
96 * The list is statically allocated and should not be freed.
98 * Return value: a list of #GdkDevice
101 gdk_devices_list (void)
103 return gdk_display_list_devices (gdk_display_get_default ());
107 * gdk_display_list_devices:
108 * @display: a #GdkDisplay
110 * Returns the list of available input devices attached to @display.
111 * The list is statically allocated and should not be freed.
113 * Return value: a list of #GdkDevice
118 gdk_display_list_devices (GdkDisplay *display)
120 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
122 return GDK_DISPLAY_X11 (display)->input_devices;
126 gdk_device_set_source (GdkDevice *device,
127 GdkInputSource source)
129 g_return_if_fail (device != NULL);
131 device->source = source;
135 gdk_device_set_key (GdkDevice *device,
138 GdkModifierType modifiers)
140 g_return_if_fail (device != NULL);
141 g_return_if_fail (index < device->num_keys);
143 device->keys[index].keyval = keyval;
144 device->keys[index].modifiers = modifiers;
148 gdk_device_set_axis_use (GdkDevice *device,
152 g_return_if_fail (device != NULL);
153 g_return_if_fail (index < device->num_axes);
155 device->axes[index].use = use;
161 device->axes[index].min = 0.;
162 device->axes[index].max = 0.;
166 device->axes[index].min = -1.;
167 device->axes[index].max = 1;
170 device->axes[index].min = 0.;
171 device->axes[index].max = 1;
177 * gdk_device_get_history:
178 * @device: a #GdkDevice
179 * @window: the window with respect to which which the event coordinates will be reported
180 * @start: starting timestamp for range of events to return
181 * @stop: ending timestamp for the range of events to return
182 * @events: location to store a newly-allocated array of #GdkTimeCoord, or %NULL
183 * @n_events: location to store the length of @events, or %NULL
185 * Obtains the motion history for a device; given a starting and
186 * ending timestamp, return all events in the motion history for
187 * the device in the given range of time. Some windowing systems
188 * do not support motion history, in which case, %FALSE will
189 * be returned. (This is not distinguishable from the case where
190 * motion history is supported and no events were found.)
192 * Return value: %TRUE if the windowing system supports motion history and
193 * at least one event was found.
196 gdk_device_get_history (GdkDevice *device,
200 GdkTimeCoord ***events,
203 GdkTimeCoord **coords = NULL;
204 gboolean result = FALSE;
205 int tmp_n_events = 0;
208 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
210 if (GDK_WINDOW_DESTROYED (window))
212 else if (GDK_IS_CORE (device))
216 xcoords = XGetMotionEvents (GDK_DRAWABLE_XDISPLAY (window),
217 GDK_DRAWABLE_XID (window),
218 start, stop, &tmp_n_events);
221 coords = _gdk_device_allocate_history (device, tmp_n_events);
222 for (i=0; i<tmp_n_events; i++)
224 coords[i]->time = xcoords[i].time;
225 coords[i]->axes[0] = xcoords[i].x;
226 coords[i]->axes[1] = xcoords[i].y;
237 result = _gdk_device_get_history (device, window, start, stop, &coords, &tmp_n_events);
240 *n_events = tmp_n_events;
244 gdk_device_free_history (coords, tmp_n_events);
250 _gdk_device_allocate_history (GdkDevice *device,
253 GdkTimeCoord **result = g_new (GdkTimeCoord *, n_events);
256 for (i=0; i<n_events; i++)
257 result[i] = g_malloc (sizeof (GdkTimeCoord) -
258 sizeof (double) * (GDK_MAX_TIMECOORD_AXES - device->num_axes));
264 gdk_device_free_history (GdkTimeCoord **events,
269 for (i=0; i<n_events; i++)
276 _gdk_input_window_find(GdkWindow *window)
279 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (window));
281 for (tmp_list=display_x11->input_windows; tmp_list; tmp_list=tmp_list->next)
282 if (((GdkInputWindow *)(tmp_list->data))->window == window)
283 return (GdkInputWindow *)(tmp_list->data);
285 return NULL; /* Not found */
288 /* FIXME: this routine currently needs to be called between creation
289 and the corresponding configure event (because it doesn't get the
290 root_relative_geometry). This should work with
291 gtk_window_set_extension_events, but will likely fail in other
295 gdk_input_set_extension_events (GdkWindow *window, gint mask,
296 GdkExtensionMode mode)
298 GdkWindowObject *window_private;
301 GdkDisplayX11 *display_x11;
303 g_return_if_fail (window != NULL);
304 g_return_if_fail (GDK_IS_WINDOW (window));
306 window_private = (GdkWindowObject*) window;
307 display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (window));
308 if (GDK_WINDOW_DESTROYED (window))
311 if (mode == GDK_EXTENSION_EVENTS_NONE)
316 iw = g_new(GdkInputWindow,1);
321 iw->obscuring = NULL;
322 iw->num_obscuring = 0;
325 display_x11->input_windows = g_list_append(display_x11->input_windows,iw);
326 window_private->extension_events = mask;
328 /* Add enter window events to the event mask */
329 /* FIXME, this is not needed for XINPUT_NONE */
330 gdk_window_set_events (window,
331 gdk_window_get_events (window) |
332 GDK_ENTER_NOTIFY_MASK);
336 iw = _gdk_input_window_find (window);
339 display_x11->input_windows = g_list_remove(display_x11->input_windows,iw);
343 window_private->extension_events = 0;
346 for (tmp_list = display_x11->input_devices; tmp_list; tmp_list = tmp_list->next)
348 GdkDevicePrivate *gdkdev = tmp_list->data;
350 if (!GDK_IS_CORE (gdkdev))
352 if (mask != 0 && gdkdev->info.mode != GDK_MODE_DISABLED
353 && (gdkdev->info.has_cursor || mode == GDK_EXTENSION_EVENTS_ALL))
354 _gdk_input_enable_window (window,gdkdev);
356 _gdk_input_disable_window (window,gdkdev);
362 _gdk_input_window_destroy (GdkWindow *window)
364 GdkInputWindow *input_window;
365 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (window));
367 input_window = _gdk_input_window_find (window);
368 g_return_if_fail (input_window != NULL);
370 display_x11->input_windows = g_list_remove (display_x11->input_windows, input_window);
371 g_free(input_window);
375 _gdk_input_exit (void)
378 GSList *display_list;
379 GdkDevicePrivate *gdkdev;
381 for (display_list = _gdk_displays ; display_list ; display_list = display_list->next)
383 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display_list->data);
385 for (tmp_list = display_x11->input_devices; tmp_list; tmp_list = tmp_list->next)
387 gdkdev = (GdkDevicePrivate *)(tmp_list->data);
388 if (!GDK_IS_CORE (gdkdev))
390 gdk_device_set_mode (&gdkdev->info, GDK_MODE_DISABLED);
392 g_free(gdkdev->info.name);
394 g_free(gdkdev->axes);
396 g_free(gdkdev->info.axes);
397 g_free(gdkdev->info.keys);
402 g_list_free(display_x11->input_devices);
404 for (tmp_list = display_x11->input_windows; tmp_list; tmp_list = tmp_list->next)
405 g_free(tmp_list->data);
407 g_list_free(display_x11->input_windows);
412 * gdk_device_get_axis:
413 * @device: a #GdkDevice
414 * @axes: pointer to an array of axes
415 * @use: the use to look for
416 * @value: location to store the found value.
418 * Interprets an array of double as axis values for a given device,
419 * and locates the value in the array for a given axis use.
421 * Return value: %TRUE if the given axis use was found, otherwise %FALSE
424 gdk_device_get_axis (GdkDevice *device,
431 g_return_val_if_fail (device != NULL, FALSE);
436 for (i=0; i<device->num_axes; i++)
437 if (device->axes[i].use == use)