gtk/gdk/win32/gdkdevice-wintab.c

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/* 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
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
#include "config.h"
#include <gdk/gdkwindow.h>
#include <windowsx.h>
#include <objbase.h>
#include "gdkwin32.h"
#include "gdkdevice-wintab.h"
static gboolean gdk_device_wintab_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
gint *n_events);
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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,
gdouble x,
gdouble y);
static void gdk_device_wintab_query_state (GdkDevice *device,
GdkWindow *window,
GdkWindow **root_window,
GdkWindow **child_window,
gdouble *root_x,
gdouble *root_y,
gdouble *win_x,
gdouble *win_y,
GdkModifierType *mask);
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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,
gdouble *win_x,
gdouble *win_y,
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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;
}
static void
gdk_device_wintab_init (GdkDeviceWintab *device_wintab)
{
}
static gboolean
gdk_device_wintab_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
gint *n_events)
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{
return FALSE;
}
static GdkModifierType
get_current_mask (void)
{
GdkModifierType mask;
BYTE kbd[256];
GetKeyboardState (kbd);
mask = 0;
if (kbd[VK_SHIFT] & 0x80)
mask |= GDK_SHIFT_MASK;
if (kbd[VK_CAPITAL] & 0x80)
mask |= GDK_LOCK_MASK;
if (kbd[VK_CONTROL] & 0x80)
mask |= GDK_CONTROL_MASK;
if (kbd[VK_MENU] & 0x80)
mask |= GDK_MOD1_MASK;
if (kbd[VK_LBUTTON] & 0x80)
mask |= GDK_BUTTON1_MASK;
if (kbd[VK_MBUTTON] & 0x80)
mask |= GDK_BUTTON2_MASK;
if (kbd[VK_RBUTTON] & 0x80)
mask |= GDK_BUTTON3_MASK;
return mask;
}
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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)
{
*mask = get_current_mask ();
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*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 (axes && device_wintab->last_axis_data)
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_gdk_device_wintab_translate_axes (device_wintab, window, axes, NULL, NULL);
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}
static void
gdk_device_wintab_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor)
{
}
static void
gdk_device_wintab_warp (GdkDevice *device,
GdkScreen *screen,
gdouble x,
gdouble y)
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{
}
static void
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gdk_device_wintab_query_state (GdkDevice *device,
GdkWindow *window,
GdkWindow **root_window,
GdkWindow **child_window,
gdouble *root_x,
gdouble *root_y,
gdouble *win_x,
gdouble *win_y,
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GdkModifierType *mask)
{
GdkDeviceWintab *device_wintab;
POINT point;
HWND hwnd, hwndc;
device_wintab = GDK_DEVICE_WINTAB (device);
hwnd = GDK_WINDOW_HWND (window);
GetCursorPos (&point);
if (root_x)
*root_x = point.x;
if (root_y)
*root_y = point.y;
ScreenToClient (hwnd, &point);
if (win_x)
*win_x = point.x;
if (win_y)
*win_y = point.y;
if (window == _gdk_root)
{
if (win_x)
*win_x += _gdk_offset_x;
if (win_y)
*win_y += _gdk_offset_y;
}
if (child_window)
{
hwndc = ChildWindowFromPoint (hwnd, point);
if (hwndc && hwndc != hwnd)
*child_window = gdk_win32_handle_table_lookup (hwndc);
else
*child_window = NULL; /* Direct child unknown to gdk */
}
if (root_window)
{
GdkScreen *screen;
screen = gdk_window_get_screen (window);
*root_window = gdk_screen_get_root_window (screen);
}
if (mask)
{
*mask = get_current_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));
}
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}
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,
gdouble *win_x,
gdouble *win_y,
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GdkModifierType *mask,
gboolean get_toplevel)
{
return NULL;
}
static void
gdk_device_wintab_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask event_mask)
{
}
void
_gdk_device_wintab_translate_axes (GdkDeviceWintab *device_wintab,
GdkWindow *window,
gdouble *axes,
gdouble *x,
gdouble *y)
{
GdkDevice *device;
GdkWindow *impl_window;
gint root_x, root_y;
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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;
gdk_window_get_origin (impl_window, &root_x, &root_y);
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for (i = 0; i < gdk_device_get_n_axes (device); i++)
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{
GdkAxisUse use;
use = gdk_device_get_axis_use (device, i);
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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;
}