gtk/gdk/win32/gdkdevice-wintab.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 <windowsx.h>
#include <objbase.h>
#include "gdkwin32.h"
#include "gdkdevice-wintab.h"
static GQuark quark_window_input_info = 0;
static GSList *input_windows = NULL;
typedef struct
{
gdouble root_x;
gdouble root_y;
GHashTable *device_events;
} GdkWindowInputInfo;
static gboolean gdk_device_wintab_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
guint *n_events);
static void gdk_device_wintab_get_state (GdkDevice *device,
GdkWindow *window,
gdouble *axes,
GdkModifierType *mask);
static void gdk_device_wintab_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor);
static void gdk_device_wintab_warp (GdkDevice *device,
GdkScreen *screen,
gint x,
gint y);
static gboolean gdk_device_wintab_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_wintab_grab (GdkDevice *device,
GdkWindow *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkWindow *confine_to,
GdkCursor *cursor,
guint32 time_);
static void gdk_device_wintab_ungrab (GdkDevice *device,
guint32 time_);
static GdkWindow * gdk_device_wintab_window_at_position (GdkDevice *device,
gint *win_x,
gint *win_y,
GdkModifierType *mask,
gboolean get_toplevel);
static void gdk_device_wintab_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask event_mask);
G_DEFINE_TYPE (GdkDeviceWintab, gdk_device_wintab, GDK_TYPE_DEVICE)
static void
gdk_device_wintab_class_init (GdkDeviceWintabClass *klass)
{
GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
device_class->get_history = gdk_device_wintab_get_history;
device_class->get_state = gdk_device_wintab_get_state;
device_class->set_window_cursor = gdk_device_wintab_set_window_cursor;
device_class->warp = gdk_device_wintab_warp;
device_class->query_state = gdk_device_wintab_query_state;
device_class->grab = gdk_device_wintab_grab;
device_class->ungrab = gdk_device_wintab_ungrab;
device_class->window_at_position = gdk_device_wintab_window_at_position;
device_class->select_window_events = gdk_device_wintab_select_window_events;
quark_window_input_info = g_quark_from_static_string ("gdk-window-input-info");
}
static void
gdk_device_wintab_init (GdkDeviceWintab *device_wintab)
{
GdkDevice *device;
device = GDK_DEVICE (device_wintab);
}
static gboolean
gdk_device_wintab_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
guint *n_events)
{
return FALSE;
}
static void
gdk_device_wintab_get_state (GdkDevice *device,
GdkWindow *window,
gdouble *axes,
GdkModifierType *mask)
{
GdkDeviceWintab *device_wintab;
device_wintab = GDK_DEVICE_WINTAB (device);
/* For now just use the last known button and axis state of the device.
* Since graphical tablets send an insane amount of motion events each
* second, the info should be fairly up to date */
if (mask)
{
gdk_window_get_pointer (window, NULL, NULL, mask);
*mask &= 0xFF; /* Mask away core pointer buttons */
*mask |= ((device_wintab->button_state << 8)
& (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK
| GDK_BUTTON3_MASK | GDK_BUTTON4_MASK
| GDK_BUTTON5_MASK));
}
if (device_wintab->last_axis_data)
_gdk_device_wintab_translate_axes (device, window, axes, NULL, NULL);
}
static void
gdk_device_wintab_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor)
{
}
static void
gdk_device_wintab_warp (GdkDevice *device,
GdkScreen *screen,
gint x,
gint y)
{
}
static gboolean
gdk_device_wintab_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_wintab_grab (GdkDevice *device,
GdkWindow *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkWindow *confine_to,
GdkCursor *cursor,
guint32 time_)
{
return GDK_GRAB_SUCCESS;
}
static void
gdk_device_wintab_ungrab (GdkDevice *device,
guint32 time_)
{
}
static GdkWindow *
gdk_device_wintab_window_at_position (GdkDevice *device,
gint *win_x,
gint *win_y,
GdkModifierType *mask,
gboolean get_toplevel)
{
return NULL;
}
static void
input_info_free (GdkWindowInputInfo *info)
{
g_hash_table_destroy (info->device_events);
g_free (info);
}
static void
gdk_device_wintab_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask event_mask)
{
GdkWindowInputInfo *info;
info = g_object_get_qdata (G_OBJECT (window),
quark_window_input_info);
if (event_mask)
{
if (!info)
{
info = g_new0 (GdkWindowInputInfo, 1);
info->device_events = g_hash_table_new (NULL, NULL);
g_object_set_qdata_full (G_OBJECT (window),
quark_window_input_info,
info,
(GDestroyNotify) input_info_free);
input_windows = g_slist_prepend (input_windows, window);
}
g_hash_table_insert (info->device_events, device,
GUINT_TO_POINTER (event_mask));
}
else if (info)
{
g_hash_table_remove (info->device_events, device);
if (g_hash_table_size (info->device_events) == 0)
{
g_object_set_qdata (G_OBJECT (window),
quark_window_input_info,
NULL);
input_windows = g_slist_remove (input_windows, window);
}
}
}
GdkEventMask
_gdk_device_wintab_get_events (GdkDeviceWintab *device,
GdkWindow *window)
{
GdkWindowInputInfo *info;
info = g_object_get_qdata (G_OBJECT (window),
quark_window_input_info);
if (!info)
return 0;
return GPOINTER_TO_UINT (g_hash_table_lookup (info->device_events, device));
}
gboolean
_gdk_device_wintab_get_window_coords (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_wintab_update_window_coords (GdkWindow *window)
{
GdkWindowInputInfo *info;
gint root_x, root_y;
info = g_object_get_qdata (G_OBJECT (window),
quark_window_input_info);
g_return_if_fail (info != NULL);
gdk_window_get_origin (window, &root_x, &root_y);
info->root_x = (gdouble) root_x;
info->root_y = (gdouble) root_y;
}
void
_gdk_device_wintab_translate_axes (GdkDeviceWintab *device_wintab,
GdkWindow *window,
gdouble *axes,
gdouble *x,
gdouble *y)
{
GdkDevice *device;
GdkWindow *impl_window;
gdouble root_x, root_y;
gdouble temp_x, temp_y;
gint i;
device = GDK_DEVICE (device_wintab);
impl_window = _gdk_window_get_impl_window (window);
temp_x = temp_y = 0;
if (!_gdk_device_wintab_get_window_coords (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 (gdk_device_get_mode (device) == GDK_MODE_WINDOW)
_gdk_device_translate_window_coord (device, window, i,
device_wintab->last_axis_data[i],
&axes[i]);
else
_gdk_device_translate_screen_coord (device, window,
root_x, root_y, i,
device_wintab->last_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,
device_wintab->last_axis_data[i],
&axes[i]);
break;
}
}
if (x)
*x = temp_x;
if (y)
*y = temp_y;
}
void
_gdk_input_check_extension_events (GdkDevice *device)
{
GSList *l;
if (!GDK_IS_DEVICE_WINTAB (device))
return;
for (l = input_windows; l; l = l->next)
{
GdkWindowObject *window_private;
GdkEventMask event_mask = 0;
window_private = l->data;
if (gdk_device_get_mode (device) != GDK_MODE_DISABLED)
event_mask = window_private->extension_events;
gdk_window_set_device_events (GDK_WINDOW (window_private),
device, event_mask);
}
}