gtk/gdk/x11/gdkdevice-xi.c

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2010-05-25 22:38:44 +00:00
/* GDK - The GIMP Drawing Kit
* Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*/
#include "config.h"
#include <gdk/gdkwindow.h>
#include "gdkdeviceprivate.h"
#include "gdkdevice-xi.h"
#include "gdkprivate-x11.h"
#include "gdkintl.h"
#include "gdkx.h"
#define MAX_DEVICE_CLASSES 13
static GQuark quark_window_input_info = 0;
typedef struct
{
gdouble root_x;
gdouble root_y;
} GdkWindowInputInfo;
static void gdk_device_xi_constructed (GObject *object);
static void gdk_device_xi_dispose (GObject *object);
static void gdk_device_xi_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gdk_device_xi_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static gboolean gdk_device_xi_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
guint *n_events);
static void gdk_device_xi_get_state (GdkDevice *device,
GdkWindow *window,
gdouble *axes,
GdkModifierType *mask);
static void gdk_device_xi_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor);
static void gdk_device_xi_warp (GdkDevice *device,
GdkScreen *screen,
gint x,
gint y);
static gboolean gdk_device_xi_query_state (GdkDevice *device,
GdkWindow *window,
GdkWindow **root_window,
GdkWindow **child_window,
gint *root_x,
gint *root_y,
gint *win_x,
gint *win_y,
GdkModifierType *mask);
static GdkGrabStatus gdk_device_xi_grab (GdkDevice *device,
GdkWindow *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkWindow *confine_to,
GdkCursor *cursor,
guint32 time_);
static void gdk_device_xi_ungrab (GdkDevice *device,
guint32 time_);
static GdkWindow* gdk_device_xi_window_at_position (GdkDevice *device,
gint *win_x,
gint *win_y,
GdkModifierType *mask,
gboolean get_toplevel);
static void gdk_device_xi_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask mask);
G_DEFINE_TYPE (GdkDeviceXI, gdk_device_xi, GDK_TYPE_DEVICE)
enum {
PROP_0,
PROP_DEVICE_ID
};
static void
gdk_device_xi_class_init (GdkDeviceXIClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
quark_window_input_info = g_quark_from_static_string ("gdk-window-input-info");
object_class->constructed = gdk_device_xi_constructed;
object_class->set_property = gdk_device_xi_set_property;
object_class->get_property = gdk_device_xi_get_property;
object_class->dispose = gdk_device_xi_dispose;
device_class->get_history = gdk_device_xi_get_history;
device_class->get_state = gdk_device_xi_get_state;
device_class->set_window_cursor = gdk_device_xi_set_window_cursor;
device_class->warp = gdk_device_xi_warp;
device_class->query_state = gdk_device_xi_query_state;
device_class->grab = gdk_device_xi_grab;
device_class->ungrab = gdk_device_xi_ungrab;
device_class->window_at_position = gdk_device_xi_window_at_position;
device_class->select_window_events = gdk_device_xi_select_window_events;
g_object_class_install_property (object_class,
PROP_DEVICE_ID,
g_param_spec_int ("device-id",
P_("Device ID"),
P_("Device ID"),
0, G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
}
static void
gdk_device_xi_init (GdkDeviceXI *device)
{
}
static void
gdk_device_xi_constructed (GObject *object)
{
GdkDeviceXI *device;
GdkDisplay *display;
device = GDK_DEVICE_XI (object);
display = gdk_device_get_display (GDK_DEVICE (object));
gdk_error_trap_push ();
device->xdevice = XOpenDevice (GDK_DISPLAY_XDISPLAY (display),
device->device_id);
if (gdk_error_trap_pop ())
g_warning ("Device %s can't be opened", GDK_DEVICE (device)->name);
if (G_OBJECT_CLASS (gdk_device_xi_parent_class)->constructed)
G_OBJECT_CLASS (gdk_device_xi_parent_class)->constructed (object);
}
static void
gdk_device_xi_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GdkDeviceXI *device = GDK_DEVICE_XI (object);
switch (prop_id)
{
case PROP_DEVICE_ID:
device->device_id = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gdk_device_xi_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GdkDeviceXI *device = GDK_DEVICE_XI (object);
switch (prop_id)
{
case PROP_DEVICE_ID:
g_value_set_int (value, device->device_id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gdk_device_xi_dispose (GObject *object)
{
GdkDeviceXI *device_xi;
GdkDisplay *display;
device_xi = GDK_DEVICE_XI (object);
display = gdk_device_get_display (GDK_DEVICE (device_xi));
if (device_xi->xdevice)
{
XCloseDevice (GDK_DISPLAY_XDISPLAY (display), device_xi->xdevice);
device_xi->xdevice = NULL;
}
if (device_xi->axis_data)
{
g_free (device_xi->axis_data);
device_xi->axis_data = NULL;
}
G_OBJECT_CLASS (gdk_device_xi_parent_class)->dispose (object);
}
static gboolean
gdk_device_xi_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
guint *n_events)
{
GdkTimeCoord **coords;
XDeviceTimeCoord *device_coords;
GdkWindow *impl_window;
GdkDeviceXI *device_xi;
gint n_events_return;
gint mode_return;
gint axis_count_return;
gint i;
device_xi = GDK_DEVICE_XI (device);
impl_window = _gdk_window_get_impl_window (window);
device_coords = XGetDeviceMotionEvents (GDK_WINDOW_XDISPLAY (impl_window),
device_xi->xdevice,
start, stop,
&n_events_return,
&mode_return,
&axis_count_return);
if (!device_coords)
return FALSE;
*n_events = (guint) n_events_return;
coords = _gdk_device_allocate_history (device, *n_events);
for (i = 0; i < *n_events; i++)
{
coords[i]->time = device_coords[i].time;
gdk_device_xi_translate_axes (device, window,
device_coords[i].data,
coords[i]->axes,
NULL, NULL);
}
XFreeDeviceMotionEvents (device_coords);
*events = coords;
return TRUE;
}
static void
gdk_device_xi_get_state (GdkDevice *device,
GdkWindow *window,
gdouble *axes,
GdkModifierType *mask)
{
GdkDeviceXI *device_xi;
XDeviceState *state;
XInputClass *input_class;
gint i;
if (mask)
gdk_window_get_pointer (window, NULL, NULL, mask);
device_xi = GDK_DEVICE_XI (device);
state = XQueryDeviceState (GDK_WINDOW_XDISPLAY (window),
device_xi->xdevice);
input_class = state->data;
for (i = 0; i < state->num_classes; i++)
{
switch (input_class->class)
{
case ValuatorClass:
if (axes)
gdk_device_xi_translate_axes (device, window,
((XValuatorState *) input_class)->valuators,
axes, NULL, NULL);
break;
case ButtonClass:
if (mask)
{
*mask &= 0xFF;
if (((XButtonState *)input_class)->num_buttons > 0)
*mask |= ((XButtonState *)input_class)->buttons[0] << 7;
/* GDK_BUTTON1_MASK = 1 << 8, and button n is stored
* in bit 1<<(n%8) in byte n/8. n = 1,2,... */
}
break;
}
input_class = (XInputClass *)(((char *)input_class)+input_class->length);
}
XFreeDeviceState (state);
}
static void
gdk_device_xi_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor)
{
}
static void
gdk_device_xi_warp (GdkDevice *device,
GdkScreen *screen,
gint x,
gint y)
{
}
static void
find_events (GdkDevice *device,
GdkEventMask mask,
XEventClass *classes,
int *num_classes)
{
GdkDeviceXI *device_xi;
XEventClass class;
gint i;
device_xi = GDK_DEVICE_XI (device);
i = 0;
if (mask & GDK_BUTTON_PRESS_MASK)
{
DeviceButtonPress (device_xi->xdevice, device_xi->button_press_type, class);
if (class != 0)
classes[i++] = class;
DeviceButtonPressGrab (device_xi->xdevice, 0, class);
if (class != 0)
classes[i++] = class;
}
if (mask & GDK_BUTTON_RELEASE_MASK)
{
DeviceButtonRelease (device_xi->xdevice, device_xi->button_release_type, class);
if (class != 0)
classes[i++] = class;
}
if (mask & (GDK_POINTER_MOTION_MASK |
GDK_BUTTON1_MOTION_MASK | GDK_BUTTON2_MOTION_MASK |
GDK_BUTTON3_MOTION_MASK | GDK_BUTTON_MOTION_MASK))
{
/* Make sure device->motionnotify_type is set */
DeviceMotionNotify (device_xi->xdevice, device_xi->motion_notify_type, class);
if (class != 0)
classes[i++] = class;
DeviceStateNotify (device_xi->xdevice, device_xi->state_notify_type, class);
if (class != 0)
classes[i++] = class;
}
if (mask & GDK_KEY_PRESS_MASK)
{
DeviceKeyPress (device_xi->xdevice, device_xi->key_press_type, class);
if (class != 0)
classes[i++] = class;
}
if (mask & GDK_KEY_RELEASE_MASK)
{
DeviceKeyRelease (device_xi->xdevice, device_xi->key_release_type, class);
if (class != 0)
classes[i++] = class;
}
if (mask & GDK_PROXIMITY_IN_MASK)
{
ProximityIn (device_xi->xdevice, device_xi->proximity_in_type, class);
if (class != 0)
classes[i++] = class;
}
if (mask & GDK_PROXIMITY_OUT_MASK)
{
ProximityOut (device_xi->xdevice, device_xi->proximity_out_type, class);
if (class != 0)
classes[i++] = class;
}
*num_classes = i;
}
static gboolean
gdk_device_xi_query_state (GdkDevice *device,
GdkWindow *window,
GdkWindow **root_window,
GdkWindow **child_window,
gint *root_x,
gint *root_y,
gint *win_x,
gint *win_y,
GdkModifierType *mask)
{
return FALSE;
}
static GdkGrabStatus
gdk_device_xi_grab (GdkDevice *device,
GdkWindow *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkWindow *confine_to,
GdkCursor *cursor,
guint32 time_)
{
XEventClass event_classes[MAX_DEVICE_CLASSES];
gint status, num_classes;
GdkDeviceXI *device_xi;
device_xi = GDK_DEVICE_XI (device);
find_events (device, event_mask, event_classes, &num_classes);
status = XGrabDevice (GDK_WINDOW_XDISPLAY (window),
device_xi->xdevice,
GDK_WINDOW_XWINDOW (window),
owner_events,
num_classes, event_classes,
GrabModeAsync, GrabModeAsync,
time_);
return _gdk_x11_convert_grab_status (status);
}
static void
gdk_device_xi_ungrab (GdkDevice *device,
guint32 time_)
{
GdkDisplay *display;
GdkDeviceXI *device_xi;
device_xi = GDK_DEVICE_XI (device);
display = gdk_device_get_display (device);
XUngrabDevice (GDK_DISPLAY_XDISPLAY (device),
device_xi->xdevice,
time_);
}
static GdkWindow*
gdk_device_xi_window_at_position (GdkDevice *device,
gint *win_x,
gint *win_y,
GdkModifierType *mask,
gboolean get_toplevel)
{
return NULL;
}
static void
gdk_device_xi_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask event_mask)
{
XEventClass event_classes[MAX_DEVICE_CLASSES];
GdkDeviceXI *device_xi;
gint num_classes;
event_mask |= (GDK_PROXIMITY_IN_MASK |
GDK_PROXIMITY_OUT_MASK);
device_xi = GDK_DEVICE_XI (device);
find_events (device, event_mask, event_classes, &num_classes);
XSelectExtensionEvent (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XWINDOW (window),
event_classes, num_classes);
if (event_mask)
{
GdkWindowInputInfo *info;
info = g_new0 (GdkWindowInputInfo, 1);
g_object_set_qdata_full (G_OBJECT (window),
quark_window_input_info,
info,
(GDestroyNotify) g_free);
}
else
g_object_set_qdata (G_OBJECT (window),
quark_window_input_info,
NULL);
}
void
gdk_device_xi_update_window_info (GdkWindow *window)
{
GdkWindowInputInfo *info;
gint root_x, root_y;
info = g_object_get_qdata (G_OBJECT (window),
quark_window_input_info);
if (!info)
return;
gdk_window_get_origin (window, &root_x, &root_y);
info->root_x = (gdouble) root_x;
info->root_y = (gdouble) root_y;
}
static gboolean
gdk_device_xi_get_window_info (GdkWindow *window,
gdouble *root_x,
gdouble *root_y)
{
GdkWindowInputInfo *info;
info = g_object_get_qdata (G_OBJECT (window),
quark_window_input_info);
if (!info)
return FALSE;
*root_x = info->root_x;
*root_y = info->root_y;
return TRUE;
}
void
gdk_device_xi_update_axes (GdkDevice *device,
gint axes_count,
gint first_axis,
gint *axis_data)
{
GdkDeviceXI *device_xi;
int i;
device_xi = GDK_DEVICE_XI (device);
g_return_if_fail (first_axis >= 0 && first_axis + axes_count <= device->num_axes);
if (!device_xi->axis_data)
device_xi->axis_data = g_new0 (gint, device->num_axes);
for (i = 0; i < axes_count; i++)
device_xi->axis_data[first_axis + i] = axis_data[i];
}
void
gdk_device_xi_translate_axes (GdkDevice *device,
GdkWindow *window,
gint *axis_data,
gdouble *axes,
gdouble *x,
gdouble *y)
{
GdkDeviceXI *device_xi;
GdkWindow *impl_window;
gdouble root_x, root_y;
gdouble temp_x, temp_y;
gint i;
device_xi = GDK_DEVICE_XI (device);
impl_window = _gdk_window_get_impl_window (window);
temp_x = temp_y = 0;
if (!gdk_device_xi_get_window_info (impl_window, &root_x, &root_y))
return;
for (i = 0; i < device->num_axes; i++)
{
GdkAxisUse use;
use = _gdk_device_get_axis_use (device, i);
switch (use)
{
case GDK_AXIS_X:
case GDK_AXIS_Y:
if (device->mode == GDK_MODE_WINDOW)
_gdk_device_translate_window_coord (device, window,
i, axis_data[i],
&axes[i]);
else
_gdk_device_translate_screen_coord (device, window,
root_x, root_y,
i, axis_data[i],
&axes[i]);
if (use == GDK_AXIS_X)
temp_x = axes[i];
else if (use == GDK_AXIS_Y)
temp_y = axes[i];
break;
default:
_gdk_device_translate_axis (device, i, axis_data[i], &axes[i]);
break;
}
}
if (x)
*x = temp_x;
if (y)
*y = temp_y;
}