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gtk2/gdk/win32/gdkdisplay-win32.c
Paolo Borelli 8f25481406 win32: use a struct for the event source 
This removes the event_poll_fd global variable and the (ab)use of
get_default_display. It is also more consistent with other backends.

Also store display
2016-03-05 20:31:10 +01:00

726 lines
22 KiB
C
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/* GDK - The GIMP Drawing Kit
* Copyright (C) 2002,2005 Hans Breuer
* Copyright (C) 2003 Tor Lillqvist
*
* 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.h"
#include "gdkprivate-win32.h"
#include "gdkdisplay-win32.h"
#include "gdkdevicemanager-win32.h"
#include "gdkglcontext-win32.h"
#include "gdkwin32display.h"
#include "gdkwin32screen.h"
#include "gdkwin32window.h"
#include "gdkwin32.h"
static int debug_indent = 0;
/**
* gdk_win32_display_set_cursor_theme:
* @display: (type GdkWin32Display): a #GdkDisplay
* @name: (allow-none): the name of the cursor theme to use, or %NULL to unset
* a previously set value
* @size: the cursor size to use, or 0 to keep the previous size
*
* Sets the cursor theme from which the images for cursor
* should be taken.
*
* If the windowing system supports it, existing cursors created
* with gdk_cursor_new(), gdk_cursor_new_for_display() and
* gdk_cursor_new_from_name() are updated to reflect the theme
* change. Custom cursors constructed with
* gdk_cursor_new_from_pixbuf() will have to be handled
* by the application (GTK+ applications can learn about
* cursor theme changes by listening for change notification
* for the corresponding #GtkSetting).
*
* Since: 3.18
*/
void
gdk_win32_display_set_cursor_theme (GdkDisplay *display,
const gchar *name,
gint size)
{
gint cursor_size;
gint w, h;
Win32CursorTheme *theme;
GdkWin32Display *win32_display = GDK_WIN32_DISPLAY (display);
g_assert (win32_display);
if (name == NULL)
name = "system";
w = GetSystemMetrics (SM_CXCURSOR);
h = GetSystemMetrics (SM_CYCURSOR);
/* We can load cursors of any size, but SetCursor() will scale them back
* to this value. It's possible to break that restrictions with SetSystemCursor(),
* but that will override cursors for the whole desktop session.
*/
cursor_size = (w == h) ? w : size;
if (win32_display->cursor_theme_name != NULL &&
g_strcmp0 (name, win32_display->cursor_theme_name) == 0 &&
win32_display->cursor_theme_size == cursor_size)
return;
theme = win32_cursor_theme_load (name, cursor_size);
if (theme == NULL)
{
g_warning ("Failed to load cursor theme %s", name);
return;
}
if (win32_display->cursor_theme)
{
win32_cursor_theme_destroy (win32_display->cursor_theme);
win32_display->cursor_theme = NULL;
}
win32_display->cursor_theme = theme;
g_free (win32_display->cursor_theme_name);
win32_display->cursor_theme_name = g_strdup (name);
win32_display->cursor_theme_size = cursor_size;
_gdk_win32_display_update_cursors (win32_display);
}
Win32CursorTheme *
_gdk_win32_display_get_cursor_theme (GdkWin32Display *win32_display)
{
Win32CursorTheme *theme;
g_assert (win32_display->cursor_theme_name);
theme = win32_display->cursor_theme;
if (!theme)
{
theme = win32_cursor_theme_load (win32_display->cursor_theme_name,
win32_display->cursor_theme_size);
if (theme == NULL)
{
g_warning ("Failed to load cursor theme %s",
win32_display->cursor_theme_name);
return NULL;
}
win32_display->cursor_theme = theme;
}
return theme;
}
static gulong
gdk_win32_display_get_next_serial (GdkDisplay *display)
{
return 0;
}
static LRESULT CALLBACK
inner_display_change_window_procedure (HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam)
{
switch (message)
{
case WM_DESTROY:
{
PostQuitMessage (0);
return 0;
}
case WM_DISPLAYCHANGE:
{
GdkWin32Display *win32_display = GDK_WIN32_DISPLAY (_gdk_display);
_gdk_win32_screen_on_displaychange_event (GDK_WIN32_SCREEN (win32_display->screen));
return 0;
}
default:
/* Otherwise call DefWindowProcW(). */
GDK_NOTE (EVENTS, g_print (" DefWindowProcW"));
return DefWindowProc (hwnd, message, wparam, lparam);
}
}
static LRESULT CALLBACK
display_change_window_procedure (HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam)
{
LRESULT retval;
GDK_NOTE (EVENTS, g_print ("%s%*s%s %p",
(debug_indent > 0 ? "\n" : ""),
debug_indent, "",
_gdk_win32_message_to_string (message), hwnd));
debug_indent += 2;
retval = inner_display_change_window_procedure (hwnd, message, wparam, lparam);
debug_indent -= 2;
GDK_NOTE (EVENTS, g_print (" => %" G_GINT64_FORMAT "%s", (gint64) retval, (debug_indent == 0 ? "\n" : "")));
return retval;
}
/* Use a hidden window to be notified about display changes */
static void
register_display_change_notification (GdkDisplay *display)
{
GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
WNDCLASS wclass = { 0, };
ATOM klass;
wclass.lpszClassName = "GdkDisplayChange";
wclass.lpfnWndProc = display_change_window_procedure;
wclass.hInstance = _gdk_app_hmodule;
klass = RegisterClass (&wclass);
if (klass)
{
display_win32->hwnd = CreateWindow (MAKEINTRESOURCE (klass),
NULL, WS_POPUP,
0, 0, 0, 0, NULL, NULL,
_gdk_app_hmodule, NULL);
if (!display_win32->hwnd)
{
UnregisterClass (MAKEINTRESOURCE (klass), _gdk_app_hmodule);
}
}
}
GdkDisplay *
_gdk_win32_display_open (const gchar *display_name)
{
GdkWin32Display *win32_display;
GDK_NOTE (MISC, g_print ("gdk_display_open: %s\n", (display_name ? display_name : "NULL")));
if (display_name == NULL ||
g_ascii_strcasecmp (display_name,
gdk_display_get_name (_gdk_display)) == 0)
{
if (_gdk_display != NULL)
{
GDK_NOTE (MISC, g_print ("... return _gdk_display\n"));
return _gdk_display;
}
}
else
{
GDK_NOTE (MISC, g_print ("... return NULL\n"));
return NULL;
}
_gdk_display = g_object_new (GDK_TYPE_WIN32_DISPLAY, NULL);
win32_display = GDK_WIN32_DISPLAY (_gdk_display);
win32_display->screen = g_object_new (GDK_TYPE_WIN32_SCREEN, NULL);
_gdk_events_init (_gdk_display);
_gdk_input_ignore_core = FALSE;
_gdk_display->device_manager = g_object_new (GDK_TYPE_DEVICE_MANAGER_WIN32,
"display", _gdk_display,
NULL);
_gdk_dnd_init ();
/* Precalculate display name */
(void) gdk_display_get_name (_gdk_display);
register_display_change_notification (_gdk_display);
g_signal_emit_by_name (_gdk_display, "opened");
GDK_NOTE (MISC, g_print ("... _gdk_display now set up\n"));
return _gdk_display;
}
G_DEFINE_TYPE (GdkWin32Display, gdk_win32_display, GDK_TYPE_DISPLAY)
static const gchar *
gdk_win32_display_get_name (GdkDisplay *display)
{
HDESK hdesk = GetThreadDesktop (GetCurrentThreadId ());
char dummy;
char *desktop_name;
HWINSTA hwinsta = GetProcessWindowStation ();
char *window_station_name;
DWORD n;
DWORD session_id;
char *display_name;
static const char *display_name_cache = NULL;
typedef BOOL (WINAPI *PFN_ProcessIdToSessionId) (DWORD, DWORD *);
PFN_ProcessIdToSessionId processIdToSessionId;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
if (display_name_cache != NULL)
return display_name_cache;
n = 0;
GetUserObjectInformation (hdesk, UOI_NAME, &dummy, 0, &n);
if (n == 0)
desktop_name = "Default";
else
{
n++;
desktop_name = g_alloca (n + 1);
memset (desktop_name, 0, n + 1);
if (!GetUserObjectInformation (hdesk, UOI_NAME, desktop_name, n, &n))
desktop_name = "Default";
}
n = 0;
GetUserObjectInformation (hwinsta, UOI_NAME, &dummy, 0, &n);
if (n == 0)
window_station_name = "WinSta0";
else
{
n++;
window_station_name = g_alloca (n + 1);
memset (window_station_name, 0, n + 1);
if (!GetUserObjectInformation (hwinsta, UOI_NAME, window_station_name, n, &n))
window_station_name = "WinSta0";
}
processIdToSessionId = (PFN_ProcessIdToSessionId) GetProcAddress (GetModuleHandle ("kernel32.dll"), "ProcessIdToSessionId");
if (!processIdToSessionId || !processIdToSessionId (GetCurrentProcessId (), &session_id))
session_id = 0;
display_name = g_strdup_printf ("%ld\\%s\\%s",
session_id,
window_station_name,
desktop_name);
GDK_NOTE (MISC, g_print ("gdk_win32_display_get_name: %s\n", display_name));
display_name_cache = display_name;
return display_name_cache;
}
static GdkScreen *
gdk_win32_display_get_default_screen (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_WIN32_DISPLAY (display), NULL);
return GDK_WIN32_DISPLAY (display)->screen;
}
static GdkWindow *
gdk_win32_display_get_default_group (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_warning ("gdk_display_get_default_group not yet implemented");
return NULL;
}
static gboolean
gdk_win32_display_supports_selection_notification (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
return TRUE;
}
static HWND _hwnd_next_viewer = NULL;
/*
* maybe this should be integrated with the default message loop - or maybe not ;-)
*/
static LRESULT CALLBACK
inner_clipboard_window_procedure (HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam)
{
switch (message)
{
case WM_DESTROY: /* remove us from chain */
{
ChangeClipboardChain (hwnd, _hwnd_next_viewer);
PostQuitMessage (0);
return 0;
}
case WM_CHANGECBCHAIN:
{
HWND hwndRemove = (HWND) wparam; /* handle of window being removed */
HWND hwndNext = (HWND) lparam; /* handle of next window in chain */
if (hwndRemove == _hwnd_next_viewer)
_hwnd_next_viewer = hwndNext == hwnd ? NULL : hwndNext;
else if (_hwnd_next_viewer != NULL)
return SendMessage (_hwnd_next_viewer, message, wparam, lparam);
return 0;
}
case WM_CLIPBOARDUPDATE:
case WM_DRAWCLIPBOARD:
{
int success;
HWND hwndOwner;
#ifdef G_ENABLE_DEBUG
UINT nFormat = 0;
#endif
GdkEvent *event;
GdkWindow *owner;
success = OpenClipboard (hwnd);
if (!success)
{
g_warning ("Failed to OpenClipboard on window handle %p", hwnd);
return 0;
}
hwndOwner = GetClipboardOwner ();
owner = gdk_win32_window_lookup_for_display (_gdk_display, hwndOwner);
if (owner == NULL)
owner = gdk_win32_window_foreign_new_for_display (_gdk_display, hwndOwner);
GDK_NOTE (DND, g_print (" drawclipboard owner: %p", hwndOwner));
#ifdef G_ENABLE_DEBUG
if (_gdk_debug_flags & GDK_DEBUG_DND)
{
while ((nFormat = EnumClipboardFormats (nFormat)) != 0)
g_print ("%s ", _gdk_win32_cf_to_string (nFormat));
}
#endif
GDK_NOTE (DND, g_print (" \n"));
event = gdk_event_new (GDK_OWNER_CHANGE);
event->owner_change.window = gdk_get_default_root_window ();
event->owner_change.owner = owner;
event->owner_change.reason = GDK_OWNER_CHANGE_NEW_OWNER;
event->owner_change.selection = GDK_SELECTION_CLIPBOARD;
event->owner_change.time = _gdk_win32_get_next_tick (0);
event->owner_change.selection_time = GDK_CURRENT_TIME;
_gdk_win32_append_event (event);
CloseClipboard ();
if (_hwnd_next_viewer != NULL)
return SendMessage (_hwnd_next_viewer, message, wparam, lparam);
/* clear error to avoid confusing SetClipboardViewer() return */
SetLastError (0);
return 0;
}
default:
/* Otherwise call DefWindowProcW(). */
GDK_NOTE (EVENTS, g_print (" DefWindowProcW"));
return DefWindowProc (hwnd, message, wparam, lparam);
}
}
static LRESULT CALLBACK
_clipboard_window_procedure (HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam)
{
LRESULT retval;
GDK_NOTE (EVENTS, g_print ("%s%*s%s %p",
(debug_indent > 0 ? "\n" : ""),
debug_indent, "",
_gdk_win32_message_to_string (message), hwnd));
debug_indent += 2;
retval = inner_clipboard_window_procedure (hwnd, message, wparam, lparam);
debug_indent -= 2;
GDK_NOTE (EVENTS, g_print (" => %" G_GINT64_FORMAT "%s", (gint64) retval, (debug_indent == 0 ? "\n" : "")));
return retval;
}
/*
* Creates a hidden window and adds it to the clipboard chain
*/
static gboolean
register_clipboard_notification (GdkDisplay *display)
{
GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
WNDCLASS wclass = { 0, };
ATOM klass;
wclass.lpszClassName = "GdkClipboardNotification";
wclass.lpfnWndProc = _clipboard_window_procedure;
wclass.hInstance = _gdk_app_hmodule;
klass = RegisterClass (&wclass);
if (!klass)
return FALSE;
display_win32->clipboard_hwnd = CreateWindow (MAKEINTRESOURCE (klass),
NULL, WS_POPUP,
0, 0, 0, 0, NULL, NULL,
_gdk_app_hmodule, NULL);
if (display_win32->clipboard_hwnd == NULL)
goto failed;
SetLastError (0);
_hwnd_next_viewer = SetClipboardViewer (display_win32->clipboard_hwnd);
if (_hwnd_next_viewer == NULL && GetLastError() != 0)
goto failed;
/* FIXME: http://msdn.microsoft.com/en-us/library/ms649033(v=VS.85).aspx */
/* This is only supported by Vista, and not yet by mingw64 */
/* if (AddClipboardFormatListener (hwnd) == FALSE) */
/* goto failed; */
return TRUE;
failed:
g_critical ("Failed to install clipboard viewer");
UnregisterClass (MAKEINTRESOURCE (klass), _gdk_app_hmodule);
return FALSE;
}
static gboolean
gdk_win32_display_request_selection_notification (GdkDisplay *display,
GdkAtom selection)
{
GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
gboolean ret = FALSE;
GDK_NOTE (DND,
g_print ("gdk_display_request_selection_notification (..., %s)",
gdk_atom_name (selection)));
if (selection == GDK_SELECTION_CLIPBOARD ||
selection == GDK_SELECTION_PRIMARY)
{
if (display_win32->clipboard_hwnd == NULL)
{
if (register_clipboard_notification (display))
GDK_NOTE (DND, g_print (" registered"));
else
GDK_NOTE (DND, g_print (" failed to register"));
}
ret = (display_win32->clipboard_hwnd != NULL);
}
else
{
GDK_NOTE (DND, g_print (" unsupported"));
ret = FALSE;
}
GDK_NOTE (DND, g_print (" -> %s\n", ret ? "TRUE" : "FALSE"));
return ret;
}
static gboolean
gdk_win32_display_supports_clipboard_persistence (GdkDisplay *display)
{
return FALSE;
}
static void
gdk_win32_display_store_clipboard (GdkDisplay *display,
GdkWindow *clipboard_window,
guint32 time_,
const GdkAtom *targets,
gint n_targets)
{
}
static gboolean
gdk_win32_display_supports_shapes (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
return TRUE;
}
static gboolean
gdk_win32_display_supports_input_shapes (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
/* Partially supported, see WM_NCHITTEST handler. */
return TRUE;
}
static gboolean
gdk_win32_display_supports_composite (GdkDisplay *display)
{
return FALSE;
}
static void
gdk_win32_display_beep (GdkDisplay *display)
{
g_return_if_fail (display == gdk_display_get_default());
if (!MessageBeep (-1))
Beep(1000, 50);
}
static void
gdk_win32_display_flush (GdkDisplay * display)
{
g_return_if_fail (display == _gdk_display);
GdiFlush ();
}
static void
gdk_win32_display_sync (GdkDisplay * display)
{
g_return_if_fail (display == _gdk_display);
GdiFlush ();
}
static void
gdk_win32_display_dispose (GObject *object)
{
GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (object);
_gdk_screen_close (display_win32->screen);
if (display_win32->hwnd != NULL)
{
DestroyWindow (display_win32->hwnd);
display_win32->hwnd = NULL;
}
if (display_win32->clipboard_hwnd != NULL)
{
DestroyWindow (display_win32->clipboard_hwnd);
display_win32->clipboard_hwnd = NULL;
_hwnd_next_viewer = NULL;
}
G_OBJECT_CLASS (gdk_win32_display_parent_class)->dispose (object);
}
static void
gdk_win32_display_finalize (GObject *object)
{
GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (object);
_gdk_win32_display_finalize_cursors (display_win32);
_gdk_win32_dnd_exit ();
G_OBJECT_CLASS (gdk_win32_display_parent_class)->finalize (object);
}
static void
gdk_win32_display_init (GdkWin32Display *display)
{
_gdk_win32_display_init_cursors (display);
}
static void
gdk_win32_display_before_process_all_updates (GdkDisplay *display)
{
/* nothing */
}
static void
gdk_win32_display_after_process_all_updates (GdkDisplay *display)
{
/* nothing */
}
static void
gdk_win32_display_notify_startup_complete (GdkDisplay *display,
const gchar *startup_id)
{
/* nothing */
}
static void
gdk_win32_display_push_error_trap (GdkDisplay *display)
{
/* nothing */
}
static gint
gdk_win32_display_pop_error_trap (GdkDisplay *display,
gboolean ignored)
{
return 0;
}
static void
gdk_win32_display_class_init (GdkWin32DisplayClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkDisplayClass *display_class = GDK_DISPLAY_CLASS (klass);
object_class->dispose = gdk_win32_display_dispose;
object_class->finalize = gdk_win32_display_finalize;
display_class->window_type = GDK_TYPE_WIN32_WINDOW;
display_class->get_name = gdk_win32_display_get_name;
display_class->get_default_screen = gdk_win32_display_get_default_screen;
display_class->beep = gdk_win32_display_beep;
display_class->sync = gdk_win32_display_sync;
display_class->flush = gdk_win32_display_flush;
display_class->has_pending = _gdk_win32_display_has_pending;
display_class->queue_events = _gdk_win32_display_queue_events;
display_class->get_default_group = gdk_win32_display_get_default_group;
display_class->supports_selection_notification = gdk_win32_display_supports_selection_notification;
display_class->request_selection_notification = gdk_win32_display_request_selection_notification;
display_class->supports_clipboard_persistence = gdk_win32_display_supports_clipboard_persistence;
display_class->store_clipboard = gdk_win32_display_store_clipboard;
display_class->supports_shapes = gdk_win32_display_supports_shapes;
display_class->supports_input_shapes = gdk_win32_display_supports_input_shapes;
display_class->supports_composite = gdk_win32_display_supports_composite;
//? display_class->get_app_launch_context = _gdk_win32_display_get_app_launch_context;
display_class->get_cursor_for_type = _gdk_win32_display_get_cursor_for_type;
display_class->get_cursor_for_name = _gdk_win32_display_get_cursor_for_name;
display_class->get_cursor_for_surface = _gdk_win32_display_get_cursor_for_surface;
display_class->get_default_cursor_size = _gdk_win32_display_get_default_cursor_size;
display_class->get_maximal_cursor_size = _gdk_win32_display_get_maximal_cursor_size;
display_class->supports_cursor_alpha = _gdk_win32_display_supports_cursor_alpha;
display_class->supports_cursor_color = _gdk_win32_display_supports_cursor_color;
display_class->before_process_all_updates = gdk_win32_display_before_process_all_updates;
display_class->after_process_all_updates = gdk_win32_display_after_process_all_updates;
display_class->get_next_serial = gdk_win32_display_get_next_serial;
display_class->notify_startup_complete = gdk_win32_display_notify_startup_complete;
display_class->create_window_impl = _gdk_win32_display_create_window_impl;
display_class->get_keymap = _gdk_win32_display_get_keymap;
display_class->push_error_trap = gdk_win32_display_push_error_trap;
display_class->pop_error_trap = gdk_win32_display_pop_error_trap;
display_class->get_selection_owner = _gdk_win32_display_get_selection_owner;
display_class->set_selection_owner = _gdk_win32_display_set_selection_owner;
display_class->send_selection_notify = _gdk_win32_display_send_selection_notify;
display_class->get_selection_property = _gdk_win32_display_get_selection_property;
display_class->convert_selection = _gdk_win32_display_convert_selection;
display_class->text_property_to_utf8_list = _gdk_win32_display_text_property_to_utf8_list;
display_class->utf8_to_string_target = _gdk_win32_display_utf8_to_string_target;
display_class->make_gl_context_current = _gdk_win32_display_make_gl_context_current;
_gdk_win32_windowing_init ();
}
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