318 lines
9.2 KiB
C
318 lines
9.2 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2020 the GTK team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* 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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*/
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#include "config.h"
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#include <gdk/gdkwindow.h>
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#include <windows.h>
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#include "gdkwin32.h"
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#include "gdkdevice-winpointer.h"
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G_DEFINE_TYPE (GdkDeviceWinpointer, gdk_device_winpointer, GDK_TYPE_DEVICE)
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static GdkModifierType
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get_keyboard_mask (void)
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{
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GdkModifierType mask;
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BYTE kbd[256];
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GetKeyboardState (kbd);
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mask = 0;
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if (kbd[VK_SHIFT] & 0x80)
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mask |= GDK_SHIFT_MASK;
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if (kbd[VK_CAPITAL] & 0x80)
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mask |= GDK_LOCK_MASK;
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if (kbd[VK_CONTROL] & 0x80)
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mask |= GDK_CONTROL_MASK;
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if (kbd[VK_MENU] & 0x80)
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mask |= GDK_MOD1_MASK;
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return mask;
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}
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static gboolean
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gdk_device_winpointer_get_history (GdkDevice *device,
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GdkWindow *window,
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guint32 start,
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guint32 stop,
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GdkTimeCoord ***events,
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gint *n_events)
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{
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return FALSE;
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}
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static void
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gdk_device_winpointer_get_state (GdkDevice *device,
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GdkWindow *window,
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gdouble *axes,
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GdkModifierType *mask)
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{
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GdkDeviceWinpointer *device_winpointer = GDK_DEVICE_WINPOINTER (device);
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if (mask)
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{
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*mask = get_keyboard_mask ();
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*mask |= device_winpointer->last_button_mask;
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}
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if (axes)
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{
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gsize size = sizeof (double) * device_winpointer->num_axes;
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memcpy (axes, device_winpointer->last_axis_data, size);
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}
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}
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static void
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gdk_device_winpointer_set_window_cursor (GdkDevice *device,
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GdkWindow *window,
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GdkCursor *cursor)
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{
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}
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static void
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gdk_device_winpointer_warp (GdkDevice *device,
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GdkScreen *screen,
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gdouble x,
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gdouble y)
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{
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}
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static void
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gdk_device_winpointer_query_state (GdkDevice *device,
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GdkWindow *window,
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GdkWindow **root_window,
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GdkWindow **child_window,
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gdouble *root_x,
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gdouble *root_y,
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gdouble *win_x,
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gdouble *win_y,
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GdkModifierType *mask)
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{
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GdkDeviceWinpointer *device_winpointer = GDK_DEVICE_WINPOINTER (device);
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GdkWindowImplWin32 *impl = GDK_WINDOW_IMPL_WIN32 (window->impl);
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GdkScreen *screen = gdk_window_get_screen (window);
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HWND hwnd = GDK_WINDOW_HWND (window);
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HWND hwndc = NULL;
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POINT point;
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_gdk_win32_get_cursor_pos (&point);
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if (root_x)
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*root_x = (point.x + _gdk_offset_x) / impl->window_scale;
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if (root_y)
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*root_y = (point.y + _gdk_offset_y) / impl->window_scale;
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if (window == gdk_screen_get_root_window (screen))
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{
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if (win_x)
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*win_x = (point.x + _gdk_offset_x) / impl->window_scale;
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if (win_y)
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*win_y = (point.y + _gdk_offset_y) / impl->window_scale;
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}
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else
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{
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ScreenToClient (hwnd, &point);
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if (win_x)
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*win_x = point.x / impl->window_scale;
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if (win_y)
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*win_y = point.y / impl->window_scale;
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}
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if (child_window)
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{
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if (window == gdk_screen_get_root_window (screen))
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{
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/* Always use WindowFromPoint when searching from the root window.
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* Only WindowFromPoint is able to look through transparent
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* layered windows.
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*/
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hwndc = GetAncestor (WindowFromPoint (point), GA_ROOT);
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}
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else
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{
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hwndc = ChildWindowFromPoint (hwnd, point);
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}
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if (hwndc && hwndc != hwnd)
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*child_window = gdk_win32_handle_table_lookup (hwndc);
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else
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*child_window = NULL; /* Direct child unknown to gdk */
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}
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if (root_window)
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*root_window = gdk_screen_get_root_window (screen);
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if (mask)
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{
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*mask = get_keyboard_mask ();
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*mask |= device_winpointer->last_button_mask;
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}
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}
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static GdkGrabStatus
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gdk_device_winpointer_grab (GdkDevice *device,
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GdkWindow *window,
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gboolean owner_events,
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GdkEventMask event_mask,
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GdkWindow *confine_to,
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GdkCursor *cursor,
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guint32 time_)
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{
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return GDK_GRAB_SUCCESS;
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}
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static void
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gdk_device_winpointer_ungrab (GdkDevice *device,
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guint32 time_)
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{
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}
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static void
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screen_to_client (HWND hwnd, POINT screen_pt, POINT *client_pt)
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{
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*client_pt = screen_pt;
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ScreenToClient (hwnd, client_pt);
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}
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GdkWindow *
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_gdk_device_winpointer_window_at_position (GdkDevice *device,
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gdouble *win_x,
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gdouble *win_y,
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GdkModifierType *mask,
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gboolean get_toplevel)
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{
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GdkDeviceWinpointer *device_winpointer = GDK_DEVICE_WINPOINTER (device);
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GdkWindow *window = NULL;
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GdkWindowImplWin32 *impl = NULL;
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POINT screen_pt, client_pt;
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HWND hwnd;
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RECT rect;
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if (!_gdk_win32_get_cursor_pos (&screen_pt))
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return NULL;
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hwnd = WindowFromPoint (screen_pt);
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if (get_toplevel)
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{
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/* Use WindowFromPoint instead of ChildWindowFromPoint(Ex).
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* Only WindowFromPoint is able to look through transparent
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* layered windows.
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*/
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hwnd = GetAncestor (hwnd, GA_ROOT);
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}
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/* Verify that we're really inside the client area of the window */
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GetClientRect (hwnd, &rect);
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screen_to_client (hwnd, screen_pt, &client_pt);
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if (!PtInRect (&rect, client_pt))
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hwnd = NULL;
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if (!get_toplevel && hwnd == NULL)
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{
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/* If we didn't hit any window, return the root window */
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/* note that the root window ain't a toplevel window */
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window = gdk_get_default_root_window ();
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impl = GDK_WINDOW_IMPL_WIN32 (window->impl);
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if (win_x)
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*win_x = (screen_pt.x + _gdk_offset_x) / impl->window_scale;
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if (win_y)
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*win_y = (screen_pt.y + _gdk_offset_y) / impl->window_scale;
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return window;
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}
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window = gdk_win32_handle_table_lookup (hwnd);
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if (window && (win_x || win_y))
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{
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impl = GDK_WINDOW_IMPL_WIN32 (window->impl);
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if (win_x)
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*win_x = client_pt.x / impl->window_scale;
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if (win_y)
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*win_y = client_pt.y / impl->window_scale;
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}
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if (mask)
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{
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*mask = get_keyboard_mask ();
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*mask |= device_winpointer->last_button_mask;
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}
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return window;
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}
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static void
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gdk_device_winpointer_select_window_events (GdkDevice *device,
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GdkWindow *window,
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GdkEventMask event_mask)
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{
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}
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static void
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gdk_device_winpointer_init (GdkDeviceWinpointer *device_winpointer)
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{
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device_winpointer->device_handle = NULL;
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device_winpointer->start_cursor_id = 0;
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device_winpointer->end_cursor_id = 0;
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device_winpointer->origin_x = 0;
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device_winpointer->origin_y = 0;
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device_winpointer->scale_x = 0.0;
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device_winpointer->scale_y = 0.0;
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device_winpointer->last_axis_data = NULL;
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device_winpointer->num_axes = 0;
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device_winpointer->last_button_mask = 0;
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}
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static void
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gdk_device_winpointer_finalize (GObject *object)
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{
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GdkDeviceWinpointer *device_winpointer = GDK_DEVICE_WINPOINTER (object);
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g_free (device_winpointer->last_axis_data);
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G_OBJECT_CLASS (gdk_device_winpointer_parent_class)->finalize (object);
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}
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static void
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gdk_device_winpointer_class_init (GdkDeviceWinpointerClass *klass)
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{
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GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = gdk_device_winpointer_finalize;
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device_class->get_history = gdk_device_winpointer_get_history;
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device_class->get_state = gdk_device_winpointer_get_state;
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device_class->set_window_cursor = gdk_device_winpointer_set_window_cursor;
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device_class->warp = gdk_device_winpointer_warp;
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device_class->query_state = gdk_device_winpointer_query_state;
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device_class->grab = gdk_device_winpointer_grab;
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device_class->ungrab = gdk_device_winpointer_ungrab;
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device_class->window_at_position = _gdk_device_winpointer_window_at_position;
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device_class->select_window_events = gdk_device_winpointer_select_window_events;
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}
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