gtk/gdk/gdkinputgxi.h

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1997-11-24 22:37:52 +00:00
/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
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*/
#ifdef XINPUT_GXI
/* #define DEBUG_SWITCHING */
#include <gxid_lib.h>
/* Forward declarations */
static void gdk_input_gxi_select_notify (GdkDevicePrivate *gdkdev);
static gint gdk_input_gxi_set_mode (guint32 deviceid, GdkInputMode mode);
static gint gdk_input_is_extension_device (guint32 deviceid);
static void gdk_input_gxi_configure_event (XConfigureEvent *xevent,
GdkWindow *window);
static void gdk_input_gxi_enter_event (XCrossingEvent *xevent,
GdkWindow *window);
static gint gdk_input_gxi_other_event (GdkEvent *event,
XEvent *xevent,
GdkWindow *window);
static void gdk_input_gxi_update_device (GdkDevicePrivate *gdkdev);
static gint gdk_input_gxi_window_none_event (GdkEvent *event, XEvent *xevent);
static gint gdk_input_gxi_enable_window (GdkWindow *window,
GdkDevicePrivate *gdkdev);
static gint gdk_input_gxi_disable_window (GdkWindow *window,
GdkDevicePrivate *gdkdev);
static Window gdk_input_find_root_child(Display *dpy, Window w);
static void gdk_input_compute_obscuring(GdkInputWindow *input_window);
static gint gdk_input_is_obscured(GdkInputWindow *input_window, gdouble x,
gdouble y);
static GdkTimeCoord *gdk_input_gxi_motion_events (GdkWindow *window,
guint32 deviceid,
guint32 start,
guint32 stop,
gint *nevents_return);
static void gdk_input_gxi_get_pointer (GdkWindow *window,
guint32 deviceid,
gdouble *x,
gdouble *y,
gdouble *pressure,
gdouble *xtilt,
gdouble *ytilt,
GdkModifierType *mask);
static gint gdk_input_gxi_grab_pointer (GdkWindow * window,
gint owner_events,
GdkEventMask event_mask,
GdkWindow * confine_to,
guint32 time);
static void gdk_input_gxi_ungrab_pointer (guint32 time);
/* Local variables */
static GdkDevicePrivate *gdk_input_current_device;
static GdkDevicePrivate *gdk_input_core_pointer;
void
gdk_input_init(void)
{
GList *tmp_list;
gdk_input_vtable.set_mode = gdk_input_gxi_set_mode;
gdk_input_vtable.set_axes = gdk_input_common_set_axes;
gdk_input_vtable.set_key = gdk_input_common_set_key;
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gdk_input_vtable.motion_events = gdk_input_gxi_motion_events;
gdk_input_vtable.get_pointer = gdk_input_gxi_get_pointer;
gdk_input_vtable.grab_pointer = gdk_input_gxi_grab_pointer;
gdk_input_vtable.ungrab_pointer = gdk_input_gxi_ungrab_pointer;
gdk_input_vtable.configure_event = gdk_input_gxi_configure_event;
gdk_input_vtable.enter_event = gdk_input_gxi_enter_event;
gdk_input_vtable.other_event = gdk_input_gxi_other_event;
gdk_input_vtable.window_none_event = gdk_input_gxi_window_none_event;
gdk_input_vtable.enable_window = gdk_input_gxi_enable_window;
gdk_input_vtable.disable_window = gdk_input_gxi_disable_window;
gdk_input_ignore_core = FALSE;
gdk_input_core_pointer = NULL;
if (!gdk_input_gxid_host)
{
gdk_input_gxid_host = getenv("GXID_HOST");
}
if (!gdk_input_gxid_port)
{
char *t = getenv("GXID_PORT");
if (t)
gdk_input_gxid_port = atoi(t);
}
gdk_input_common_init(TRUE);
/* find initial core pointer */
for (tmp_list = gdk_input_devices; tmp_list; tmp_list = tmp_list->next)
{
GdkDevicePrivate *gdkdev = (GdkDevicePrivate *)tmp_list->data;
if (gdk_input_is_extension_device(gdkdev->info.deviceid))
{
gdk_input_gxi_select_notify (gdkdev);
}
else
{
if (gdkdev->info.deviceid != GDK_CORE_POINTER)
gdk_input_core_pointer = gdkdev;
}
}
}
static void
gdk_input_gxi_select_notify (GdkDevicePrivate *gdkdev)
{
XEventClass class;
ChangeDeviceNotify (gdkdev->xdevice, gdkdev->changenotify_type, class);
XSelectExtensionEvent (gdk_display, gdk_root_window, &class, 1);
}
/* Set the core pointer. Device should already be enabled. */
static gint
gdk_input_gxi_set_core_pointer(GdkDevicePrivate *gdkdev)
{
int x_axis,y_axis;
g_return_val_if_fail(gdkdev->xdevice,FALSE);
x_axis = gdkdev->axis_for_use[GDK_AXIS_X];
y_axis = gdkdev->axis_for_use[GDK_AXIS_Y];
g_return_val_if_fail(x_axis != -1 && y_axis != -1,FALSE);
/* core_pointer might not be up to date so we check with the server
before change the pointer */
if ( !gdk_input_is_extension_device(gdkdev->info.deviceid) )
{
#if 0
if (gdkdev != gdk_input_core_pointer)
g_warning("core pointer inconsistency");
#endif
return TRUE;
}
if ( XChangePointerDevice(gdk_display,gdkdev->xdevice, x_axis, y_axis)
!= Success )
{
return FALSE;
}
else
{
gdk_input_gxi_update_device (gdk_input_core_pointer);
gdk_input_core_pointer = gdkdev;
return TRUE;
}
}
/* FIXME, merge with gdk_input_xfree_set_mode */
static gint
gdk_input_gxi_set_mode (guint32 deviceid, GdkInputMode mode)
{
GList *tmp_list;
GdkDevicePrivate *gdkdev;
GdkInputMode old_mode;
GdkInputWindow *input_window;
gdkdev = gdk_input_find_device(deviceid);
g_return_val_if_fail (gdkdev != NULL,FALSE);
old_mode = gdkdev->info.mode;
if (gdkdev->info.mode == mode)
return TRUE;
gdkdev->info.mode = mode;
if (old_mode != GDK_MODE_DISABLED)
{
for (tmp_list = gdk_input_windows; tmp_list; tmp_list = tmp_list->next)
{
input_window = (GdkInputWindow *)tmp_list->data;
if (input_window->mode != GDK_EXTENSION_EVENTS_CURSOR)
gdk_input_disable_window (input_window->window, gdkdev);
}
}
if (mode != GDK_MODE_DISABLED)
{
for (tmp_list = gdk_input_windows; tmp_list; tmp_list = tmp_list->next)
{
input_window = (GdkInputWindow *)tmp_list->data;
if (input_window->mode != GDK_EXTENSION_EVENTS_CURSOR)
if (!gdk_input_enable_window(input_window->window, gdkdev))
{
gdk_input_set_mode(deviceid, old_mode);
return FALSE;
}
}
}
return TRUE;
}
gint
gdk_input_is_extension_device (guint32 deviceid)
{
XDeviceInfo *devices;
int num_devices, loop;
if (deviceid == GDK_CORE_POINTER)
return FALSE;
devices = XListInputDevices(gdk_display, &num_devices);
for(loop=0; loop<num_devices; loop++)
{
if ((devices[loop].id == deviceid) && (devices[loop].use == IsXExtensionDevice))
{
XFreeDeviceList(devices);
return TRUE;
}
}
XFreeDeviceList(devices);
return FALSE;
}
static void
gdk_input_gxi_configure_event (XConfigureEvent *xevent, GdkWindow *window)
{
GdkInputWindow *input_window;
gint root_x, root_y;
input_window = gdk_input_window_find(window);
g_return_if_fail (input_window != NULL);
gdk_input_get_root_relative_geometry(gdk_display,GDK_WINDOW_XWINDOW(window),
&root_x, &root_y, NULL, NULL);
input_window->root_x = root_x;
input_window->root_y = root_y;
gdk_input_compute_obscuring(input_window);
}
static void
gdk_input_gxi_enter_event (XCrossingEvent *xevent, GdkWindow *window)
{
GdkInputWindow *input_window;
input_window = gdk_input_window_find(window);
g_return_if_fail (input_window != NULL);
gdk_input_compute_obscuring(input_window);
}
static gint
gdk_input_gxi_other_event (GdkEvent *event,
XEvent *xevent,
GdkWindow *window)
{
GdkInputWindow *input_window;
GdkDevicePrivate *gdkdev;
gint return_val;
input_window = gdk_input_window_find(window);
g_return_val_if_fail (window != NULL, -1);
/* This is a sort of a hack, as there isn't any XDeviceAnyEvent -
but it's potentially faster than scanning through the types of
every device. If we were deceived, then it won't match any of
the types for the device anyways */
gdkdev = gdk_input_find_device(((XDeviceButtonEvent *)xevent)->deviceid);
if (!gdkdev) {
return -1; /* we don't handle it - not an XInput event */
}
if (gdkdev->info.mode == GDK_MODE_DISABLED ||
input_window->mode == GDK_EXTENSION_EVENTS_CURSOR)
return FALSE;
if (gdkdev != gdk_input_current_device &&
xevent->type != gdkdev->changenotify_type)
{
gdk_input_current_device = gdkdev;
}
return_val = gdk_input_common_other_event (event, xevent,
input_window, gdkdev);
if (return_val > 0 && event->type == GDK_MOTION_NOTIFY &&
(!gdkdev->button_state) && (!input_window->grabbed) &&
((event->motion.x < 0) || (event->motion.y < 0) ||
(event->motion.x > ((GdkWindowPrivate *)window)->width) ||
(event->motion.y > ((GdkWindowPrivate *)window)->height) ||
gdk_input_is_obscured(input_window,event->motion.x,event->motion.y)))
{
#ifdef DEBUG_SWITCHING
g_print("gdkinput: Setting core pointer to %d on motion at (%f,%f)\n",
gdkdev->info.deviceid,event->motion.x,event->motion.y);
g_print(" window geometry is: %dx%d\n",
((GdkWindowPrivate *)window)->width,
((GdkWindowPrivate *)window)->height);
#endif
gdk_input_gxi_set_core_pointer(gdkdev);
return FALSE;
}
else
return return_val;
}
static void
gdk_input_gxi_update_device (GdkDevicePrivate *gdkdev)
{
GList *t;
if (gdk_input_is_extension_device (gdkdev->info.deviceid))
{
if (!gdkdev->xdevice)
{
gdkdev->xdevice = XOpenDevice(gdk_display, gdkdev->info.deviceid);
gdk_input_gxi_select_notify (gdkdev);
gdkdev->needs_update = 1;
}
if (gdkdev->needs_update && gdkdev->xdevice)
{
for (t = gdk_input_windows; t; t = t->next)
gdk_input_common_select_events (((GdkInputWindow *)t->data)->window,
gdkdev);
gdkdev->needs_update = 0;
}
}
}
static gint
gdk_input_gxi_window_none_event (GdkEvent *event, XEvent *xevent)
{
GdkDevicePrivate *gdkdev =
gdk_input_find_device(((XDeviceButtonEvent *)xevent)->deviceid);
if (!gdkdev) {
return -1; /* we don't handle it - not an XInput event */
}
if (xevent->type == gdkdev->changenotify_type)
{
if (gdk_input_core_pointer != gdkdev)
{
#ifdef DEBUG_SWITCHING
g_print("ChangeNotify from %d to %d:\n",
gdk_input_core_pointer->info.deviceid,
gdkdev->info.deviceid);
#endif
gdk_input_gxi_update_device (gdk_input_core_pointer);
gdk_input_core_pointer = gdkdev;
}
}
return FALSE;
}
static gint
gdk_input_gxi_enable_window (GdkWindow *window, GdkDevicePrivate *gdkdev)
{
GdkInputWindow *input_window;
input_window = gdk_input_window_find (window);
g_return_val_if_fail (input_window != NULL, FALSE);
if (!gdkdev->claimed)
{
if (gxid_claim_device(gdk_input_gxid_host, gdk_input_gxid_port,
gdkdev->info.deviceid,
GDK_WINDOW_XWINDOW(window), FALSE) !=
GXID_RETURN_OK)
{
g_warning("Could not get device (is gxid running?)\n");
return FALSE;
}
gdkdev->claimed = TRUE;
}
if (gdkdev->xdevice && gdkdev != gdk_input_core_pointer)
gdk_input_common_select_events(window, gdkdev);
else
gdkdev->needs_update = TRUE;
return TRUE;
}
static gint
gdk_input_gxi_disable_window(GdkWindow *window, GdkDevicePrivate *gdkdev)
{
GdkInputWindow *input_window;
input_window = gdk_input_window_find (window);
g_return_val_if_fail (input_window != NULL, FALSE);
if (gdkdev->claimed)
{
gxid_release_device(gdk_input_gxid_host, gdk_input_gxid_port,
gdkdev->info.deviceid,
GDK_WINDOW_XWINDOW(window));
gdkdev->claimed = FALSE;
}
if (gdkdev->xdevice && gdkdev != gdk_input_core_pointer)
gdk_input_common_select_events(window, gdkdev);
else
gdkdev->needs_update = TRUE;
return TRUE;
}
static gint
gdk_input_is_obscured(GdkInputWindow *input_window, gdouble x, gdouble y)
{
int i;
for (i=0;i<input_window->num_obscuring;i++)
{
GdkRectangle *rect = &input_window->obscuring[i];
if ((x >= rect->x) &&
(y >= rect->y) &&
(x < rect->x + rect->width) &&
(y < rect->y + rect->height))
return TRUE;
}
return FALSE;
}
/* If this routine needs fixing, the corresponding routine
in gxid.c will need it too. */
static Window
gdk_input_find_root_child(Display *dpy, Window w)
{
Window root,parent;
Window *children;
int nchildren;
parent = w;
do
{
w = parent;
XQueryTree(dpy,w,&root,&parent,&children,&nchildren);
if (children) XFree(children);
}
while (parent != root);
return w;
}
void
gdk_input_compute_obscuring(GdkInputWindow *input_window)
{
int i;
int x,y,width,height;
int xc,yc,widthc,heightc,border_widthc,depthc;
Window root,parent;
Window *children;
int nchildren;
Window w = GDK_WINDOW_XWINDOW(input_window->window);
Window root_child = gdk_input_find_root_child(gdk_display,w);
gdk_input_get_root_relative_geometry(gdk_display,w,&x,&y,&width,&height);
input_window->root_x = x;
input_window->root_y = y;
XQueryTree(gdk_display,GDK_ROOT_WINDOW(),
&root,&parent,&children,&nchildren);
if (input_window->obscuring)
g_free(input_window->obscuring);
input_window->obscuring = 0;
input_window->num_obscuring = 0;
for (i=0;i<nchildren;i++)
if (children[i] == root_child)
break;
if (i>=nchildren-1)
{
if (nchildren)
XFree(children);
return;
}
input_window->obscuring = g_new(GdkRectangle,(nchildren-i-1));
for (i=i+1;i<nchildren;i++)
{
int xmin, xmax, ymin, ymax;
XGetGeometry(gdk_display,children[i],&root,&xc,&yc,&widthc,&heightc,
&border_widthc, &depthc);
xmin = xc>x ? xc : x;
xmax = (xc+widthc)<(x+width) ? xc+widthc : x+width;
ymin = yc>y ? yc : y;
ymax = (yc+heightc)<(y+height) ? yc+heightc : y+height;
if ((xmin < xmax) && (ymin < ymax))
{
XWindowAttributes attributes;
XGetWindowAttributes(gdk_display,children[i],&attributes);
if (attributes.map_state == IsViewable)
{
GdkRectangle *rect = &input_window->obscuring[input_window->num_obscuring];
/* we store the whole window, not just the obscuring part */
rect->x = xc - x;
rect->y = yc - y;
rect->width = widthc;
rect->height = heightc;
input_window->num_obscuring++;
}
}
}
if (nchildren)
XFree(children);
}
static void
gdk_input_gxi_get_pointer (GdkWindow *window,
guint32 deviceid,
gdouble *x,
gdouble *y,
gdouble *pressure,
gdouble *xtilt,
gdouble *ytilt,
GdkModifierType *mask)
{
GdkDevicePrivate *gdkdev;
gdkdev = gdk_input_find_device (deviceid);
g_return_if_fail (gdkdev != NULL);
if (gdkdev == gdk_input_core_pointer)
gdk_input_common_get_pointer (window, GDK_CORE_POINTER, x, y,
pressure, xtilt, ytilt, mask);
else
gdk_input_common_get_pointer (window, deviceid, x, y,
pressure, xtilt, ytilt, mask);
}
static GdkTimeCoord *
gdk_input_gxi_motion_events (GdkWindow *window,
guint32 deviceid,
guint32 start,
guint32 stop,
gint *nevents_return)
{
GdkDevicePrivate *gdkdev;
gdkdev = gdk_input_find_device (deviceid);
g_return_val_if_fail (gdkdev != NULL, NULL);
if (gdkdev == gdk_input_core_pointer)
return gdk_input_motion_events (window, GDK_CORE_POINTER, start, stop,
nevents_return);
else
return gdk_input_common_motion_events (window, deviceid, start, stop,
nevents_return);
}
static gint
gdk_input_gxi_grab_pointer (GdkWindow * window,
gint owner_events,
GdkEventMask event_mask,
GdkWindow * confine_to,
guint32 time)
{
GList *tmp_list;
GdkInputWindow *input_window;
GdkDevicePrivate *gdkdev;
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tmp_list = gdk_input_windows;
while (tmp_list)
{
input_window = (GdkInputWindow *)tmp_list->data;
if (input_window->window == window)
input_window->grabbed = TRUE;
else if (input_window->grabbed)
input_window->grabbed = FALSE;
tmp_list = tmp_list->next;
}
tmp_list = gdk_input_devices;
while (tmp_list)
{
gdkdev = (GdkDevicePrivate *)tmp_list->data;
if (gdkdev->info.deviceid != GDK_CORE_POINTER &&
gdkdev->xdevice &&
(gdkdev->button_state != 0))
gdkdev->button_state = 0;
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tmp_list = tmp_list->next;
}
return Success;
}
static void
gdk_input_gxi_ungrab_pointer (guint32 time)
{
GdkInputWindow *input_window;
GList *tmp_list;
tmp_list = gdk_input_windows;
while (tmp_list)
{
input_window = (GdkInputWindow *)tmp_list->data;
if (input_window->grabbed)
input_window->grabbed = FALSE;
tmp_list = tmp_list->next;
}
}
#endif /* XINPUT_GXI */