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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
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gdk/gdksurface.h>
#include <windowsx.h>
#include <objbase.h>
#include <math.h>
#include "gdkdevice-win32.h"
#include "gdkwin32.h"
#include "gdkdisplay-win32.h"
#include "gdkdevice-virtual.h"
#include "gdkdevice-wintab.h"
G_DEFINE_TYPE (GdkDeviceWin32, gdk_device_win32, GDK_TYPE_DEVICE)
static void
gdk_device_win32_set_surface_cursor (GdkDevice *device,
GdkSurface *window,
GdkCursor *cursor)
{
}
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_ALT_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;
}
static void
gdk_device_win32_query_state (GdkDevice *device,
GdkSurface *window,
GdkSurface **child_window,
double *win_x,
double *win_y,
GdkModifierType *mask)
{
POINT point;
HWND hwnd, hwndc;
int scale;
if (window)
{
scale = GDK_WIN32_SURFACE (window)->surface_scale;
hwnd = GDK_SURFACE_HWND (window);
}
else
{
GdkDisplay *display = gdk_device_get_display (device);
scale = GDK_WIN32_DISPLAY (display)->surface_scale;
hwnd = NULL;
}
GetCursorPos (&point);
if (hwnd)
ScreenToClient (hwnd, &point);
if (win_x)
*win_x = point.x / scale;
if (win_y)
*win_y = point.y / scale;
if (window)
{
if (win_x)
*win_x += _gdk_offset_x;
if (win_y)
*win_y += _gdk_offset_y;
}
if (hwnd && 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 (mask)
*mask = get_current_mask ();
}
void
_gdk_device_win32_query_state (GdkDevice *device,
GdkSurface *window,
GdkSurface **child_window,
double *win_x,
double *win_y,
GdkModifierType *mask)
{
if (GDK_IS_DEVICE_VIRTUAL (device))
gdk_device_virtual_query_state (device, window, child_window, win_x, win_y, mask);
else if (GDK_IS_DEVICE_WINTAB (device))
gdk_device_wintab_query_state (device, window, child_window, win_x, win_y, mask);
else
gdk_device_win32_query_state (device, window, child_window, win_x, win_y, mask);
}
static GdkGrabStatus
gdk_device_win32_grab (GdkDevice *device,
GdkSurface *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkSurface *confine_to,
GdkCursor *cursor,
guint32 time_)
{
/* No support for grabbing physical devices atm */
return GDK_GRAB_NOT_VIEWABLE;
}
static void
gdk_device_win32_ungrab (GdkDevice *device,
guint32 time_)
{
}
static void
screen_to_client (HWND hwnd, POINT screen_pt, POINT *client_pt)
{
*client_pt = screen_pt;
ScreenToClient (hwnd, client_pt);
}
GdkSurface *
_gdk_device_win32_surface_at_position (GdkDevice *device,
double *win_x,
double *win_y,
GdkModifierType *mask)
{
GdkSurface *window = NULL;
GdkWin32Surface *impl = NULL;
POINT screen_pt, client_pt;
HWND hwnd;
RECT rect;
if (!GetCursorPos (&screen_pt))
return NULL;
/* Use WindowFromPoint instead of ChildWindowFromPoint(Ex).
* Only WindowFromPoint is able to look through transparent
* layered windows.
*/
hwnd = GetAncestor (WindowFromPoint (screen_pt), GA_ROOT);
/* Verify that we're really inside the client area of the window */
GetClientRect (hwnd, &rect);
screen_to_client (hwnd, screen_pt, &client_pt);
if (!PtInRect (&rect, client_pt))
hwnd = NULL;
window = gdk_win32_handle_table_lookup (hwnd);
if (window && (win_x || win_y))
{
impl = GDK_WIN32_SURFACE (window);
if (win_x)
*win_x = client_pt.x / impl->surface_scale;
if (win_y)
*win_y = client_pt.y / impl->surface_scale;
}
return window;
}
static void
gdk_device_win32_class_init (GdkDeviceWin32Class *klass)
{
GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
device_class->set_surface_cursor = gdk_device_win32_set_surface_cursor;
device_class->grab = gdk_device_win32_grab;
device_class->ungrab = gdk_device_win32_ungrab;
device_class->surface_at_position = _gdk_device_win32_surface_at_position;
}
static void
gdk_device_win32_init (GdkDeviceWin32 *device_win32)
{
GdkDevice *device;
device = GDK_DEVICE (device_win32);
_gdk_device_add_axis (device, GDK_AXIS_X, 0, 0, 1);
_gdk_device_add_axis (device, GDK_AXIS_Y, 0, 0, 1);
}
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