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314 | /* CDK - 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 <cdk/cdkwindow.h>
#include <windowsx.h>
#include <objbase.h>
#include "cdkdisplayprivate.h"
#include "cdkdevice-win32.h"
#include "cdkwin32.h"
G_DEFINE_TYPE (CdkDeviceWin32, cdk_device_win32, CDK_TYPE_DEVICE)
static gboolean
cdk_device_win32_get_history (CdkDevice *device,
CdkWindow *window,
guint32 start,
guint32 stop,
CdkTimeCoord ***events,
gint *n_events)
{
return FALSE;
}
static void
cdk_device_win32_get_state (CdkDevice *device,
CdkWindow *window,
gdouble *axes,
CdkModifierType *mask)
{
gint x_int, y_int;
cdk_window_get_device_position (window, device, &x_int, &y_int, mask);
if (axes)
{
axes[0] = x_int;
axes[1] = y_int;
}
}
static void
cdk_device_win32_set_window_cursor (CdkDevice *device,<--- Parameter 'device' can be declared as pointer to const
CdkWindow *window,<--- Parameter 'window' can be declared as pointer to const
CdkCursor *cursor)<--- Parameter 'cursor' can be declared as pointer to const
{
}
static void
cdk_device_win32_warp (CdkDevice *device,<--- Parameter 'device' can be declared as pointer to const
CdkScreen *screen,<--- Parameter 'screen' can be declared as pointer to const
gdouble x,
gdouble y)
{
}
static CdkModifierType
get_current_mask (void)
{
CdkModifierType mask;
BYTE kbd[256];
GetKeyboardState (kbd);
mask = 0;
if (kbd[VK_SHIFT] & 0x80)
mask |= CDK_SHIFT_MASK;
if (kbd[VK_CAPITAL] & 0x80)
mask |= CDK_LOCK_MASK;
if (kbd[VK_CONTROL] & 0x80)
mask |= CDK_CONTROL_MASK;
if (kbd[VK_MENU] & 0x80)
mask |= CDK_MOD1_MASK;
if (kbd[VK_LBUTTON] & 0x80)
mask |= CDK_BUTTON1_MASK;
if (kbd[VK_MBUTTON] & 0x80)
mask |= CDK_BUTTON2_MASK;
if (kbd[VK_RBUTTON] & 0x80)
mask |= CDK_BUTTON3_MASK;
return mask;
}
static void
cdk_device_win32_query_state (CdkDevice *device,
CdkWindow *window,
CdkWindow **root_window,
CdkWindow **child_window,
gdouble *root_x,
gdouble *root_y,
gdouble *win_x,
gdouble *win_y,
CdkModifierType *mask)
{
CdkScreen *screen;
POINT point;
HWND hwnd, hwndc;
CdkWindowImplWin32 *impl;<--- Variable 'impl' can be declared as pointer to const
screen = cdk_window_get_screen (window);
impl = CDK_WINDOW_IMPL_WIN32 (window->impl);
hwnd = CDK_WINDOW_HWND (window);
GetCursorPos (&point);
if (root_x)
*root_x = point.x / impl->window_scale;
if (root_y)
*root_y = point.y / impl->window_scale;
ScreenToClient (hwnd, &point);
if (win_x)
*win_x = point.x / impl->window_scale;
if (win_y)
*win_y = point.y / impl->window_scale;
if (window == cdk_screen_get_root_window (screen))
{
if (win_x)
*win_x += _cdk_offset_x;
if (win_y)
*win_y += _cdk_offset_y;
if (root_x)
*root_x += _cdk_offset_x;
if (root_y)
*root_y += _cdk_offset_y;
}
if (child_window)
{
hwndc = ChildWindowFromPoint (hwnd, point);
if (hwndc && hwndc != hwnd)
*child_window = cdk_win32_handle_table_lookup (hwndc);
else
*child_window = NULL; /* Direct child unknown to cdk */
}
if (root_window)
*root_window = cdk_screen_get_root_window (screen);
if (mask)
*mask = get_current_mask ();
}
static CdkGrabStatus
cdk_device_win32_grab (CdkDevice *device,<--- Parameter 'device' can be declared as pointer to const
CdkWindow *window,<--- Parameter 'window' can be declared as pointer to const
gboolean owner_events,
CdkEventMask event_mask,
CdkWindow *confine_to,<--- Parameter 'confine_to' can be declared as pointer to const
CdkCursor *cursor,<--- Parameter 'cursor' can be declared as pointer to const
guint32 time_)
{
/* No support for grabbing the slave atm */
return CDK_GRAB_NOT_VIEWABLE;
}
static void
cdk_device_win32_ungrab (CdkDevice *device,<--- Parameter 'device' can be declared as pointer to const
guint32 time_)
{
}
static void
screen_to_client (HWND hwnd, POINT screen_pt, POINT *client_pt)
{
*client_pt = screen_pt;
ScreenToClient (hwnd, client_pt);
}
CdkWindow *
_cdk_device_win32_window_at_position (CdkDevice *device,
gdouble *win_x,
gdouble *win_y,
CdkModifierType *mask,
gboolean get_toplevel)
{
CdkWindow *window = NULL;
CdkWindowImplWin32 *impl = NULL;<--- Variable 'impl' can be declared as pointer to const
POINT screen_pt, client_pt;
HWND hwnd, hwndc;
RECT rect;
GetCursorPos (&screen_pt);
if (get_toplevel)
{
/* Only consider visible children of the desktop to avoid the various
* non-visible windows you often find on a running Windows box. These
* might overlap our windows and cause our walk to fail. As we assume
* WindowFromPoint() can find our windows, we follow similar logic
* here, and ignore invisible and disabled windows.
*/
hwnd = GetDesktopWindow ();
do {
window = cdk_win32_handle_table_lookup (hwnd);
if (window != NULL &&
CDK_WINDOW_TYPE (window) != CDK_WINDOW_ROOT &&
CDK_WINDOW_TYPE (window) != CDK_WINDOW_FOREIGN)
break;
screen_to_client (hwnd, screen_pt, &client_pt);
hwndc = ChildWindowFromPointEx (hwnd, client_pt, CWP_SKIPDISABLED |
CWP_SKIPINVISIBLE);
/* Verify that we're really inside the client area of the window */
if (hwndc != hwnd)
{
GetClientRect (hwndc, &rect);
screen_to_client (hwndc, screen_pt, &client_pt);
if (!PtInRect (&rect, client_pt))
hwndc = hwnd;
}
} while (hwndc != hwnd && (hwnd = hwndc, 1));<--- Condition 'hwnd=hwndc,1' is always true
}
else
{
hwnd = WindowFromPoint (screen_pt);
/* 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;
/* If we didn't hit any window at that point, return the desktop */
if (hwnd == NULL)
{
window = cdk_get_default_root_window ();
impl = CDK_WINDOW_IMPL_WIN32 (window->impl);
if (win_x)
*win_x = (screen_pt.x + _cdk_offset_x) / impl->window_scale;
if (win_y)
*win_y = (screen_pt.y + _cdk_offset_y) / impl->window_scale;
return window;
}
window = cdk_win32_handle_table_lookup (hwnd);
}
if (window && (win_x || win_y))
{
impl = CDK_WINDOW_IMPL_WIN32 (window->impl);
if (win_x)
*win_x = client_pt.x / impl->window_scale;
if (win_y)
*win_y = client_pt.y / impl->window_scale;
}
return window;
}
static void
cdk_device_win32_select_window_events (CdkDevice *device,<--- Parameter 'device' can be declared as pointer to const
CdkWindow *window,<--- Parameter 'window' can be declared as pointer to const
CdkEventMask event_mask)
{
}
static void
cdk_device_win32_class_init (CdkDeviceWin32Class *klass)
{
CdkDeviceClass *device_class = CDK_DEVICE_CLASS (klass);
device_class->get_history = cdk_device_win32_get_history;
device_class->get_state = cdk_device_win32_get_state;
device_class->set_window_cursor = cdk_device_win32_set_window_cursor;<--- You might need to cast the function pointer here<--- You might need to cast the function pointer here<--- You might need to cast the function pointer here
device_class->warp = cdk_device_win32_warp;<--- You might need to cast the function pointer here<--- You might need to cast the function pointer here
device_class->query_state = cdk_device_win32_query_state;
device_class->grab = cdk_device_win32_grab;<--- You might need to cast the function pointer here<--- You might need to cast the function pointer here<--- You might need to cast the function pointer here<--- You might need to cast the function pointer here
device_class->ungrab = cdk_device_win32_ungrab;<--- You might need to cast the function pointer here
device_class->window_at_position = _cdk_device_win32_window_at_position;
device_class->select_window_events = cdk_device_win32_select_window_events;<--- You might need to cast the function pointer here<--- You might need to cast the function pointer here
}
static void
cdk_device_win32_init (CdkDeviceWin32 *device_win32)
{
CdkDevice *device;
device = CDK_DEVICE (device_win32);
_cdk_device_add_axis (device, CDK_NONE, CDK_AXIS_X, 0, 0, 1);
_cdk_device_add_axis (device, CDK_NONE, CDK_AXIS_Y, 0, 0, 1);
}
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