gtk2/gdk/win32/gdkdevice-win32.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 "gdkdevice-win32.h"
#include "gdkwin32.h"
static gboolean gdk_device_win32_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
gint *n_events);
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static void gdk_device_win32_get_state (GdkDevice *device,
GdkWindow *window,
gdouble *axes,
GdkModifierType *mask);
static void gdk_device_win32_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor);
static void gdk_device_win32_warp (GdkDevice *device,
GdkScreen *screen,
gint x,
gint y);
static gboolean gdk_device_win32_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_win32_grab (GdkDevice *device,
GdkWindow *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkWindow *confine_to,
GdkCursor *cursor,
guint32 time_);
static void gdk_device_win32_ungrab (GdkDevice *device,
guint32 time_);
static GdkWindow * gdk_device_win32_window_at_position (GdkDevice *device,
gint *win_x,
gint *win_y,
GdkModifierType *mask,
gboolean get_toplevel);
static void gdk_device_win32_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask event_mask);
G_DEFINE_TYPE (GdkDeviceWin32, gdk_device_win32, GDK_TYPE_DEVICE)
static void
gdk_device_win32_class_init (GdkDeviceWin32Class *klass)
{
GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
device_class->get_history = gdk_device_win32_get_history;
device_class->get_state = gdk_device_win32_get_state;
device_class->set_window_cursor = gdk_device_win32_set_window_cursor;
device_class->warp = gdk_device_win32_warp;
device_class->query_state = gdk_device_win32_query_state;
device_class->grab = gdk_device_win32_grab;
device_class->ungrab = gdk_device_win32_ungrab;
device_class->window_at_position = gdk_device_win32_window_at_position;
device_class->select_window_events = gdk_device_win32_select_window_events;
}
static void
gdk_device_win32_init (GdkDeviceWin32 *device_win32)
{
GdkDevice *device;
device = GDK_DEVICE (device_win32);
_gdk_device_add_axis (device, GDK_NONE, GDK_AXIS_X, 0, 0, 1);
_gdk_device_add_axis (device, GDK_NONE, GDK_AXIS_Y, 0, 0, 1);
}
static gboolean
gdk_device_win32_get_history (GdkDevice *device,
GdkWindow *window,
guint32 start,
guint32 stop,
GdkTimeCoord ***events,
gint *n_events)
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{
return FALSE;
}
static void
gdk_device_win32_get_state (GdkDevice *device,
GdkWindow *window,
gdouble *axes,
GdkModifierType *mask)
{
gint x_int, y_int;
gdk_window_get_pointer (window, &x_int, &y_int, mask);
if (axes)
{
axes[0] = x_int;
axes[1] = y_int;
}
}
static void
gdk_device_win32_set_window_cursor (GdkDevice *device,
GdkWindow *window,
GdkCursor *cursor)
{
GdkCursorPrivate *cursor_private;
GdkWindowObject *parent_window;
GdkWindowImplWin32 *impl;
HCURSOR hcursor;
HCURSOR hprevcursor;
impl = GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl);
cursor_private = (GdkCursorPrivate*) cursor;
hprevcursor = impl->hcursor;
if (!cursor)
hcursor = NULL;
else
hcursor = cursor_private->hcursor;
if (hcursor != NULL)
{
/* If the pointer is over our window, set new cursor */
GdkWindow *curr_window = gdk_window_get_pointer (window, NULL, NULL, NULL);
if (curr_window == window ||
(curr_window && window == gdk_window_get_toplevel (curr_window)))
SetCursor (hcursor);
else
{
/* Climb up the tree and find whether our window is the
* first ancestor that has cursor defined, and if so, set
* new cursor.
*/
GdkWindowObject *curr_window_obj = GDK_WINDOW_OBJECT (curr_window);
while (curr_window_obj &&
!GDK_WINDOW_IMPL_WIN32 (curr_window_obj->impl)->hcursor)
{
curr_window_obj = curr_window_obj->parent;
if (curr_window_obj == GDK_WINDOW_OBJECT (window))
{
SetCursor (hcursor);
break;
}
}
}
}
/* Unset the previous cursor: Need to make sure it's no longer in
* use before we destroy it, in case we're not over our window but
* the cursor is still set to our old one.
*/
if (hprevcursor != NULL &&
GetCursor () == hprevcursor)
{
/* Look for a suitable cursor to use instead */
hcursor = NULL;
parent_window = GDK_WINDOW_OBJECT (window)->parent;
while (hcursor == NULL)
{
if (parent_window)
{
impl = GDK_WINDOW_IMPL_WIN32 (parent_window->impl);
hcursor = impl->hcursor;
parent_window = parent_window->parent;
}
else
hcursor = LoadCursor (NULL, IDC_ARROW);
}
SetCursor (hcursor);
}
}
static void
gdk_device_win32_warp (GdkDevice *device,
GdkScreen *screen,
gint x,
gint y)
{
SetCursorPos (x - _gdk_offset_x, y - _gdk_offset_y);
}
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;
}
static gboolean
gdk_device_win32_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)
{
gboolean return_val;
POINT point;
HWND hwnd, hwndc;
g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), FALSE);
return_val = TRUE;
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 ((GdkNativeWindow) hwndc);
else
*child_window = NULL; /* Direct child unknown to gdk */
}
if (root_window)
{
GdkScreen *screen;
screen = gdk_window_get_screen (window);
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*root_window = gdk_screen_get_root_window (screen);
}
if (mask)
*mask = get_current_mask ();
return TRUE;
}
static GdkGrabStatus
gdk_device_win32_grab (GdkDevice *device,
GdkWindow *window,
gboolean owner_events,
GdkEventMask event_mask,
GdkWindow *confine_to,
GdkCursor *cursor,
guint32 time_)
{
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if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
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SetCapture (GDK_WINDOW_HWND (window));
return GDK_GRAB_SUCCESS;
}
static void
gdk_device_win32_ungrab (GdkDevice *device,
guint32 time_)
{
GdkDisplay *display;
display = gdk_device_get_display (device);
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if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
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ReleaseCapture ();
}
static GdkWindow *
gdk_device_win32_window_at_position (GdkDevice *device,
gint *win_x,
gint *win_y,
GdkModifierType *mask,
gboolean get_toplevel)
{
GdkWindow *window;
POINT point, pointc;
HWND hwnd, hwndc;
RECT rect;
GetCursorPos (&pointc);
point = pointc;
hwnd = WindowFromPoint (point);
if (hwnd == NULL)
{
window = _gdk_root;
*win_x = pointc.x + _gdk_offset_x;
*win_y = pointc.y + _gdk_offset_y;
return window;
}
ScreenToClient (hwnd, &point);
do
{
if (get_toplevel &&
(window = gdk_win32_handle_table_lookup ((GdkNativeWindow) hwnd)) != NULL &&
GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
break;
hwndc = ChildWindowFromPoint (hwnd, point);
ClientToScreen (hwnd, &point);
ScreenToClient (hwndc, &point);
}
while (hwndc != hwnd && (hwnd = hwndc, 1));
window = gdk_win32_handle_table_lookup ((GdkNativeWindow) hwnd);
if (window && (win_x || win_y))
{
GetClientRect (hwnd, &rect);
*win_x = point.x - rect.left;
*win_y = point.y - rect.top;
}
return window;
}
static void
gdk_device_win32_select_window_events (GdkDevice *device,
GdkWindow *window,
GdkEventMask event_mask)
{
}