357 lines
8.8 KiB
C
357 lines
8.8 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gdkinputprivate.h"
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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/* forward declarations */
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static void gdk_input_check_proximity (void);
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void
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_gdk_input_init(void)
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{
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_gdk_init_input_core ();
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_gdk_input_ignore_core = FALSE;
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gdk_input_common_init(FALSE);
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}
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gboolean
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gdk_device_set_mode (GdkDevice *device,
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GdkInputMode mode)
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{
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GList *tmp_list;
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GdkDevicePrivate *gdkdev;
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GdkInputMode old_mode;
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GdkInputWindow *input_window;
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if (GDK_IS_CORE (device))
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return FALSE;
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gdkdev = (GdkDevicePrivate *)device;
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if (device->mode == mode)
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return TRUE;
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old_mode = device->mode;
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device->mode = mode;
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if (mode == GDK_MODE_WINDOW)
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{
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device->has_cursor = FALSE;
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for (tmp_list = _gdk_input_windows; tmp_list; tmp_list = tmp_list->next)
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{
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input_window = (GdkInputWindow *)tmp_list->data;
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if (input_window->mode != GDK_EXTENSION_EVENTS_CURSOR)
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_gdk_input_enable_window (input_window->window, gdkdev);
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else
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if (old_mode != GDK_MODE_DISABLED)
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_gdk_input_disable_window (input_window->window, gdkdev);
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}
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}
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else if (mode == GDK_MODE_SCREEN)
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{
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device->has_cursor = TRUE;
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for (tmp_list = _gdk_input_windows; tmp_list; tmp_list = tmp_list->next)
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_gdk_input_enable_window (((GdkInputWindow *)tmp_list->data)->window,
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gdkdev);
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}
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else /* mode == GDK_MODE_DISABLED */
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{
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for (tmp_list = _gdk_input_windows; tmp_list; tmp_list = tmp_list->next)
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{
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input_window = (GdkInputWindow *)tmp_list->data;
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if (old_mode != GDK_MODE_WINDOW ||
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input_window->mode != GDK_EXTENSION_EVENTS_CURSOR)
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_gdk_input_disable_window (input_window->window, gdkdev);
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}
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}
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return TRUE;
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}
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static void
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gdk_input_check_proximity (void)
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{
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gint new_proximity = 0;
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GList *tmp_list = _gdk_input_devices;
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while (tmp_list && !new_proximity)
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{
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GdkDevicePrivate *gdkdev = (GdkDevicePrivate *)(tmp_list->data);
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if (gdkdev->info.mode != GDK_MODE_DISABLED
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&& !GDK_IS_CORE (gdkdev)
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&& gdkdev->xdevice)
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{
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XDeviceState *state = XQueryDeviceState(GDK_DISPLAY(),
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gdkdev->xdevice);
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XInputClass *xic;
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int i;
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xic = state->data;
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for (i=0; i<state->num_classes; i++)
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{
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if (xic->class == ValuatorClass)
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{
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XValuatorState *xvs = (XValuatorState *)xic;
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if ((xvs->mode & ProximityState) == InProximity)
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{
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new_proximity = TRUE;
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}
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break;
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}
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xic = (XInputClass *)((char *)xic + xic->length);
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}
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XFreeDeviceState (state);
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}
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tmp_list = tmp_list->next;
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}
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_gdk_input_ignore_core = new_proximity;
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}
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void
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_gdk_input_configure_event (XConfigureEvent *xevent,
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GdkWindow *window)
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{
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GdkInputWindow *input_window;
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gint root_x, root_y;
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input_window = gdk_input_window_find(window);
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g_return_if_fail (window != NULL);
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gdk_input_get_root_relative_geometry(GDK_DISPLAY(),GDK_WINDOW_XWINDOW(window),
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&root_x,
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&root_y, NULL, NULL);
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input_window->root_x = root_x;
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input_window->root_y = root_y;
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}
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void
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_gdk_input_enter_event (XCrossingEvent *xevent,
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GdkWindow *window)
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{
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GdkInputWindow *input_window;
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gint root_x, root_y;
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input_window = gdk_input_window_find(window);
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g_return_if_fail (window != NULL);
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gdk_input_check_proximity();
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gdk_input_get_root_relative_geometry(GDK_DISPLAY(),GDK_WINDOW_XWINDOW(window),
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&root_x,
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&root_y, NULL, NULL);
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input_window->root_x = root_x;
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input_window->root_y = root_y;
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}
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gint
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_gdk_input_other_event (GdkEvent *event,
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XEvent *xevent,
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GdkWindow *window)
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{
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GdkInputWindow *input_window;
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GdkDevicePrivate *gdkdev;
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gint return_val;
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input_window = gdk_input_window_find(window);
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g_return_val_if_fail (window != NULL, -1);
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/* This is a sort of a hack, as there isn't any XDeviceAnyEvent -
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but it's potentially faster than scanning through the types of
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every device. If we were deceived, then it won't match any of
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the types for the device anyways */
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gdkdev = gdk_input_find_device (((XDeviceButtonEvent *)xevent)->deviceid);
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if (!gdkdev)
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return -1; /* we don't handle it - not an XInput event */
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/* FIXME: It would be nice if we could just get rid of the events
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entirely, instead of having to ignore them */
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if (gdkdev->info.mode == GDK_MODE_DISABLED ||
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(gdkdev->info.mode == GDK_MODE_WINDOW
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&& input_window->mode == GDK_EXTENSION_EVENTS_CURSOR))
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return FALSE;
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if (!_gdk_input_ignore_core)
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gdk_input_check_proximity();
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return_val = gdk_input_common_other_event (event, xevent,
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input_window, gdkdev);
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if (return_val > 0 && event->type == GDK_PROXIMITY_OUT &&
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_gdk_input_ignore_core)
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gdk_input_check_proximity();
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return return_val;
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}
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gboolean
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_gdk_input_enable_window(GdkWindow *window, GdkDevicePrivate *gdkdev)
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{
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/* FIXME: watchout, gdkdev might be core pointer, never opened */
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gdk_input_common_select_events (window, gdkdev);
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return TRUE;
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}
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gboolean
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_gdk_input_disable_window(GdkWindow *window, GdkDevicePrivate *gdkdev)
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{
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gdk_input_common_select_events (window, gdkdev);
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return TRUE;
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}
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gint
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_gdk_input_grab_pointer (GdkWindow * window,
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gint owner_events,
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GdkEventMask event_mask,
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GdkWindow * confine_to,
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guint32 time)
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{
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GdkInputWindow *input_window, *new_window;
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gboolean need_ungrab;
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GdkDevicePrivate *gdkdev;
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GList *tmp_list;
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XEventClass event_classes[GDK_MAX_DEVICE_CLASSES];
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gint num_classes;
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gint result;
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tmp_list = _gdk_input_windows;
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new_window = NULL;
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need_ungrab = FALSE;
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while (tmp_list)
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{
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input_window = (GdkInputWindow *)tmp_list->data;
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if (input_window->window == window)
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new_window = input_window;
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else if (input_window->grabbed)
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{
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input_window->grabbed = FALSE;
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need_ungrab = TRUE;
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}
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tmp_list = tmp_list->next;
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}
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if (new_window)
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{
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new_window->grabbed = TRUE;
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tmp_list = _gdk_input_devices;
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while (tmp_list)
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{
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gdkdev = (GdkDevicePrivate *)tmp_list->data;
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if (!GDK_IS_CORE (gdkdev) && gdkdev->xdevice)
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{
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gdk_input_common_find_events (window, gdkdev,
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event_mask,
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event_classes, &num_classes);
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#ifdef G_ENABLE_DEBUG
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if (_gdk_debug_flags & GDK_DEBUG_NOGRABS)
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result = GrabSuccess;
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else
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#endif
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result = XGrabDevice( GDK_DISPLAY(), gdkdev->xdevice,
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GDK_WINDOW_XWINDOW (window),
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owner_events, num_classes, event_classes,
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GrabModeAsync, GrabModeAsync, time);
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/* FIXME: if failure occurs on something other than the first
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device, things will be badly inconsistent */
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if (result != Success)
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return result;
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}
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tmp_list = tmp_list->next;
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}
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}
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else
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{
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tmp_list = _gdk_input_devices;
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while (tmp_list)
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{
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gdkdev = (GdkDevicePrivate *)tmp_list->data;
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if (!GDK_IS_CORE (gdkdev) && gdkdev->xdevice &&
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((gdkdev->button_state != 0) || need_ungrab))
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{
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XUngrabDevice( gdk_display, gdkdev->xdevice, time);
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gdkdev->button_state = 0;
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}
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tmp_list = tmp_list->next;
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}
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}
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return Success;
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}
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void
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_gdk_input_ungrab_pointer (guint32 time)
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{
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GdkInputWindow *input_window = NULL; /* Quiet GCC */
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GdkDevicePrivate *gdkdev;
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GList *tmp_list;
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tmp_list = _gdk_input_windows;
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while (tmp_list)
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{
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input_window = (GdkInputWindow *)tmp_list->data;
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if (input_window->grabbed)
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break;
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tmp_list = tmp_list->next;
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}
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if (tmp_list) /* we found a grabbed window */
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{
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input_window->grabbed = FALSE;
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tmp_list = _gdk_input_devices;
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while (tmp_list)
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{
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gdkdev = (GdkDevicePrivate *)tmp_list->data;
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if (!GDK_IS_CORE (gdkdev) && gdkdev->xdevice)
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XUngrabDevice( gdk_display, gdkdev->xdevice, time);
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tmp_list = tmp_list->next;
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}
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}
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}
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gint
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_gdk_input_window_none_event (GdkEvent *event,
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XEvent *xevent)
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{
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return -1;
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}
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