[gtk/wip/otte/win32-cleanup: 5/5] win32: Use GWL_USERDATA instead of a global hash table
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wip/otte/win32-cleanup: 5/5] win32: Use GWL_USERDATA instead of a global hash table
- Date: Sat, 31 Jul 2021 03:50:26 +0000 (UTC)
commit c1f1a1a62328113d3939d939c2013eb921e95d44
Author: Benjamin Otte <otte redhat com>
Date: Wed Jul 21 03:44:39 2021 +0200
win32: Use GWL_USERDATA instead of a global hash table
We can delete a whole source file again!
Also deprecate a bunch of stupid and dangerous APIs that shouldn't have
made it to 4.0, but who's gonna review the Windows backend, amirite?
gdk/win32/gdkdevice-win32.c | 9 +-
gdk/win32/gdkdevice-wintab.c | 5 +-
gdk/win32/gdkevents-win32.c | 30 +++----
gdk/win32/gdkprivate-win32.h | 4 -
gdk/win32/gdksurface-win32.c | 192 +++++++++++--------------------------------
gdk/win32/gdkwin32id.c | 81 ------------------
gdk/win32/gdkwin32misc.h | 14 ++--
gdk/win32/meson.build | 1 -
8 files changed, 71 insertions(+), 265 deletions(-)
---
diff --git a/gdk/win32/gdkdevice-win32.c b/gdk/win32/gdkdevice-win32.c
index 283df3c519..9cfcef1b83 100644
--- a/gdk/win32/gdkdevice-win32.c
+++ b/gdk/win32/gdkdevice-win32.c
@@ -72,6 +72,7 @@ gdk_device_win32_query_state (GdkDevice *device,
double *win_y,
GdkModifierType *mask)
{
+ GdkDisplay *display = gdk_device_get_display (device);
POINT point;
HWND hwnd, hwndc;
int scale;
@@ -83,8 +84,6 @@ gdk_device_win32_query_state (GdkDevice *device,
}
else
{
- GdkDisplay *display = gdk_device_get_display (device);
-
scale = GDK_WIN32_DISPLAY (display)->surface_scale;
hwnd = NULL;
}
@@ -105,7 +104,7 @@ gdk_device_win32_query_state (GdkDevice *device,
hwndc = ChildWindowFromPoint (hwnd, point);
if (hwndc && hwndc != hwnd)
- *child_window = gdk_win32_handle_table_lookup (hwndc);
+ *child_window = gdk_win32_surface_lookup_for_display (display, hwndc);
else
*child_window = NULL; /* Direct child unknown to gdk */
}
@@ -162,6 +161,7 @@ _gdk_device_win32_surface_at_position (GdkDevice *device,
double *win_y,
GdkModifierType *mask)
{
+ GdkDisplay *display = gdk_device_get_display (device);
GdkSurface *window = NULL;
GdkWin32Surface *impl = NULL;
POINT screen_pt, client_pt;
@@ -183,7 +183,8 @@ _gdk_device_win32_surface_at_position (GdkDevice *device,
if (!PtInRect (&rect, client_pt))
hwnd = NULL;
- window = gdk_win32_handle_table_lookup (hwnd);
+ if (hwnd)
+ window = gdk_win32_surface_lookup_for_display (display, hwnd);
if (window && (win_x || win_y))
{
diff --git a/gdk/win32/gdkdevice-wintab.c b/gdk/win32/gdkdevice-wintab.c
index 4822eb042e..39dc2ac922 100644
--- a/gdk/win32/gdkdevice-wintab.c
+++ b/gdk/win32/gdkdevice-wintab.c
@@ -69,6 +69,7 @@ gdk_device_wintab_query_state (GdkDevice *device,
double *win_y,
GdkModifierType *mask)
{
+ GdkDisplay *display = gdk_device_get_display (device);
GdkDeviceWintab *device_wintab;
POINT point;
HWND hwnd, hwndc;
@@ -82,8 +83,6 @@ gdk_device_wintab_query_state (GdkDevice *device,
}
else
{
- GdkDisplay *display = gdk_device_get_display (device);
-
scale = GDK_WIN32_DISPLAY (display)->surface_scale;
hwnd = NULL;
}
@@ -104,7 +103,7 @@ gdk_device_wintab_query_state (GdkDevice *device,
hwndc = ChildWindowFromPoint (hwnd, point);
if (hwndc && hwndc != hwnd)
- *child_window = gdk_win32_handle_table_lookup (hwndc);
+ *child_window = gdk_win32_surface_lookup_for_display (display, hwndc);
else
*child_window = NULL; /* Direct child unknown to gdk */
}
diff --git a/gdk/win32/gdkevents-win32.c b/gdk/win32/gdkevents-win32.c
index 23d93df1b0..813b9366d6 100644
--- a/gdk/win32/gdkevents-win32.c
+++ b/gdk/win32/gdkevents-win32.c
@@ -259,15 +259,7 @@ inner_window_procedure (HWND hwnd,
{
surface = (UNALIGNED GdkSurface *) (((LPCREATESTRUCTW) lparam)->lpCreateParams);
GDK_SURFACE_HWND (surface) = hwnd;
- /* Take note: we're inserting a pointer into a heap-allocated
- * object (impl). Inserting a pointer to a stack variable
- * will break the logic, since stack variables are short-lived.
- * We insert a pointer to the handle instead of the handle itsel
- * probably because we need to hash them differently depending
- * on the bitness of the OS. That pointer is still unique,
- * so this works out in the end.
- */
- gdk_win32_handle_table_insert (&GDK_SURFACE_HWND (surface), surface);
+ SetWindowLongPtr (hwnd, GWLP_USERDATA, (LONG_PTR) surface);
}
else
{
@@ -407,7 +399,7 @@ low_level_keyboard_proc (int code,
if (kbd_focus_owner == NULL)
break;
- gdk_kbd_focus_owner = gdk_win32_handle_table_lookup (kbd_focus_owner);
+ gdk_kbd_focus_owner = GDK_SURFACE (GetWindowLongPtr (kbd_focus_owner, GWLP_USERDATA));
if (gdk_kbd_focus_owner == NULL)
break;
@@ -636,7 +628,7 @@ find_window_for_mouse_event (GdkDisplay *display,
ScreenToClient (hwnd, &client_pt);
GetClientRect (hwnd, &rect);
if (PtInRect (&rect, client_pt))
- event_surface = gdk_win32_handle_table_lookup (hwnd);
+ event_surface = GDK_SURFACE (GetWindowLongPtr (hwnd, GWLP_USERDATA));
}
if (event_surface == NULL)
event_surface = grab->surface;
@@ -1814,7 +1806,7 @@ gdk_event_translate (GdkDisplay *display,
return TRUE;
}
- window = gdk_win32_handle_table_lookup (msg->hwnd);
+ window = GDK_SURFACE (GetWindowLongPtr (msg->hwnd, GWLP_USERDATA));
keyboard_grab = _gdk_display_get_last_device_grab (display,
device_manager_win32->core_keyboard);
@@ -2248,7 +2240,7 @@ gdk_event_translate (GdkDisplay *display,
ScreenToClient (hwnd, &client_pt);
GetClientRect (hwnd, &rect);
if (PtInRect (&rect, client_pt))
- new_window = gdk_win32_handle_table_lookup (hwnd);
+ new_window = GDK_SURFACE (GetWindowLongPtr (hwnd, GWLP_USERDATA));
}
synthesize_crossing_events (display,
@@ -2301,8 +2293,8 @@ gdk_event_translate (GdkDisplay *display,
ScreenToClient (hwnd, &client_pt);
GetClientRect (hwnd, &rect);
- if (PtInRect (&rect, client_pt))
- new_window = gdk_win32_handle_table_lookup (hwnd);
+ if (PtInRect (&rect, client_pt))
+ new_window = gdk_win32_surface_lookup_for_display (display, hwnd);
}
if (!pointer_grab->owner_events &&
@@ -2403,8 +2395,8 @@ gdk_event_translate (GdkDisplay *display,
ScreenToClient (hwnd, &client_pt);
GetClientRect (hwnd, &rect);
- if (PtInRect (&rect, client_pt))
- new_window = gdk_win32_handle_table_lookup (hwnd);
+ if (PtInRect (&rect, client_pt))
+ new_window = gdk_win32_surface_lookup_for_display (display, hwnd);
}
if (!ignore_leave)
@@ -2462,7 +2454,7 @@ gdk_event_translate (GdkDisplay *display,
}
msg->hwnd = hwnd;
- if ((new_window = gdk_win32_handle_table_lookup (msg->hwnd)) == NULL)
+ if ((new_window = gdk_win32_surface_lookup_for_display (display, hwnd)) == NULL)
break;
if (new_window != window)
@@ -3023,7 +3015,7 @@ gdk_event_translate (GdkDisplay *display,
{
if (msg->lParam != 0)
{
- GdkSurface *other_surface = gdk_win32_handle_table_lookup ((HWND) msg->lParam);
+ GdkSurface *other_surface = gdk_win32_surface_lookup_for_display (display, (HWND)
msg->lParam);
if (other_surface != NULL &&
(GDK_IS_POPUP (other_surface) || GDK_IS_DRAG_SURFACE (other_surface)))
{
diff --git a/gdk/win32/gdkprivate-win32.h b/gdk/win32/gdkprivate-win32.h
index 1cfafc1149..b7cd40d9e5 100644
--- a/gdk/win32/gdkprivate-win32.h
+++ b/gdk/win32/gdkprivate-win32.h
@@ -176,10 +176,6 @@ void _gdk_win32_surface_move_region (GdkSurface *window,
void _gdk_win32_selection_init (void);
void _gdk_win32_dnd_exit (void);
-void gdk_win32_handle_table_insert (HANDLE *handle,
- gpointer data);
-void gdk_win32_handle_table_remove (HANDLE handle);
-
HRGN _gdk_win32_cairo_region_to_hrgn (const cairo_region_t *region,
int x_origin,
int y_origin);
diff --git a/gdk/win32/gdksurface-win32.c b/gdk/win32/gdksurface-win32.c
index 5b1dd2b6a5..93bce05ef1 100644
--- a/gdk/win32/gdksurface-win32.c
+++ b/gdk/win32/gdksurface-win32.c
@@ -177,11 +177,6 @@ gdk_surface_win32_finalize (GObject *object)
surface = GDK_WIN32_SURFACE (object);
- if (!GDK_SURFACE_DESTROYED (surface))
- {
- gdk_win32_handle_table_remove (surface->handle);
- }
-
g_clear_pointer (&surface->snap_stash, g_free);
g_clear_pointer (&surface->snap_stash_int, g_free);
@@ -319,127 +314,6 @@ get_default_title (void)
return title;
}
-/* RegisterGdkClass
- * is a wrapper function for RegisterWindowClassEx.
- * It creates at least one unique class for every
- * GdkSurfaceType. If support for single window-specific icons
- * is ever needed (e.g Dialog specific), every such window should
- * get its own class
- */
-static ATOM
-RegisterGdkClass (GdkSurfaceType wtype)
-{
- static ATOM klassTOPLEVEL = 0;
- static ATOM klassTEMP = 0;
- static HICON hAppIcon = NULL;
- static HICON hAppIconSm = NULL;
- static WNDCLASSEXW wcl;
- ATOM klass = 0;
-
- wcl.cbSize = sizeof (WNDCLASSEX);
- wcl.style = 0; /* DON'T set CS_<H,V>REDRAW. It causes total redraw
- * on WM_SIZE and WM_MOVE. Flicker, Performance!
- */
- wcl.lpfnWndProc = _gdk_win32_surface_procedure;
- wcl.cbClsExtra = 0;
- wcl.cbWndExtra = 0;
- wcl.hInstance = _gdk_dll_hinstance;
- wcl.hIcon = 0;
- wcl.hIconSm = 0;
-
- /* initialize once! */
- if (0 == hAppIcon && 0 == hAppIconSm)
- {
- char sLoc [MAX_PATH+1];
-
- // try to load first icon of executable program
- if (0 != GetModuleFileName (NULL, sLoc, MAX_PATH))
- {
- ExtractIconEx (sLoc, 0, &hAppIcon, &hAppIconSm, 1);
-
- if (0 == hAppIcon && 0 == hAppIconSm)
- {
- // fallback : load icon from GTK DLL
- if (0 != GetModuleFileName (_gdk_dll_hinstance, sLoc, MAX_PATH))
- {
- ExtractIconEx (sLoc, 0, &hAppIcon, &hAppIconSm, 1);
- }
- }
- }
-
- if (0 == hAppIcon && 0 == hAppIconSm)
- {
- hAppIcon = LoadImage (NULL, IDI_APPLICATION, IMAGE_ICON,
- GetSystemMetrics (SM_CXICON),
- GetSystemMetrics (SM_CYICON), 0);
- hAppIconSm = LoadImage (NULL, IDI_APPLICATION, IMAGE_ICON,
- GetSystemMetrics (SM_CXSMICON),
- GetSystemMetrics (SM_CYSMICON), 0);
- }
- }
-
- if (0 == hAppIcon)
- hAppIcon = hAppIconSm;
- else if (0 == hAppIconSm)
- hAppIconSm = hAppIcon;
-
- wcl.lpszMenuName = NULL;
-
- /* initialize once per class */
- /*
- * HB: Setting the background brush leads to flicker, because we
- * don't get asked how to clear the background. This is not what
- * we want, at least not for input_only windows ...
- */
-#define ONCE_PER_CLASS() \
- wcl.hIcon = CopyIcon (hAppIcon); \
- wcl.hIconSm = CopyIcon (hAppIconSm); \
- wcl.hbrBackground = NULL; \
- wcl.hCursor = LoadCursor (NULL, IDC_ARROW);
-
- /* MSDN: CS_OWNDC is needed for OpenGL contexts */
- wcl.style |= CS_OWNDC;
-
- switch (wtype)
- {
- case GDK_SURFACE_TOPLEVEL:
- case GDK_SURFACE_POPUP:
- if (0 == klassTOPLEVEL)
- {
- wcl.lpszClassName = L"gdkSurfaceToplevel";
-
- ONCE_PER_CLASS ();
- klassTOPLEVEL = RegisterClassExW (&wcl);
- }
- klass = klassTOPLEVEL;
- break;
-
- case GDK_SURFACE_TEMP:
- if (klassTEMP == 0)
- {
- wcl.lpszClassName = L"gdkSurfaceTemp";
- wcl.style |= CS_SAVEBITS;
- ONCE_PER_CLASS ();
- klassTEMP = RegisterClassExW (&wcl);
- }
-
- klass = klassTEMP;
-
- break;
-
- default:
- g_assert_not_reached ();
- break;
- }
-
- if (klass == 0)
- {
- WIN32_API_FAILED ("RegisterClassExW");
- g_error ("That is a fatal error");
- }
- return klass;
-}
-
/*
* Create native windows.
*
@@ -578,16 +452,24 @@ _gdk_win32_display_create_surface (GdkDisplay *display,
title = get_default_title ();
if (!title || !*title)
title = "";
+ wtitle = g_utf8_to_utf16 (title, -1, NULL, NULL, NULL);
- /* WS_EX_TRANSPARENT means "try draw this window last, and ignore input".
- * It's the last part we're after. We don't want DND indicator to accept
- * input, because that will make it a potential drop target, and if it's
- * under the mouse cursor, this will kill any DND.
- */
+ switch (surface_type)
+ {
+ case GDK_SURFACE_TOPLEVEL:
+ case GDK_SURFACE_POPUP:
+ klass = display_win32->toplevel_class;
+ break;
- klass = RegisterGdkClass (surface_type);
+ case GDK_SURFACE_TEMP:
+ klass = display_win32->temp_class;
+ break;
- wtitle = g_utf8_to_utf16 (title, -1, NULL, NULL, NULL);
+ default:
+ g_assert_not_reached ();
+ klass = 0;
+ break;
+ }
hwndNew = CreateWindowExW (dwExStyle,
MAKEINTRESOURCEW (klass),
@@ -615,15 +497,6 @@ _gdk_win32_display_create_surface (GdkDisplay *display,
}
g_object_ref (impl);
- /* Take note: we're inserting a pointer into a heap-allocated
- * object (impl). Inserting a pointer to a stack variable
- * will break the logic, since stack variables are short-lived.
- * We insert a pointer to the handle instead of the handle itself
- * probably because we need to hash them differently depending
- * on the bitness of the OS. That pointer is still unique,
- * so this works out in the end.
- */
- gdk_win32_handle_table_insert (&GDK_SURFACE_HWND (impl), impl);
GDK_NOTE (MISC, g_print ("... \"%s\" %dx%d@%+d%+d %p = %p\n",
title,
@@ -734,7 +607,6 @@ gdk_win32_surface_destroy_notify (GdkSurface *window)
_gdk_surface_destroy (window, TRUE);
}
- gdk_win32_handle_table_remove (GDK_SURFACE_HWND (window));
g_object_unref (window);
}
@@ -4242,13 +4114,41 @@ gdk_win32_surface_focus (GdkSurface *window,
SetFocus (GDK_SURFACE_HWND (window));
}
+/* Yay for nobody cleaning up the win32 API.
+ At least there's no documentation for this crap,
+ so there's nothing we can break.*/
+gpointer
+gdk_win32_handle_table_lookup (HWND handle)
+{
+ return NULL;
+}
+
+/**
+ * gdk_win32_surface_lookup_for_display:
+ * @display: A display
+ * @hwnd: A HWND maybe belonging to a `GdkSurface`
+ *
+ * Looks up the `GdkSurface` that created the given @hwnd.
+ *
+ * Returns: (transfer none) (nullable) (type GdkWin32Surface):
+ * The surface belonging to @hwnd or %NULL
+ */
GdkSurface *
gdk_win32_surface_lookup_for_display (GdkDisplay *display,
- HWND anid)
+ HWND anid)
{
- g_return_val_if_fail (display == gdk_display_get_default (), NULL);
+ GdkWin32Display *self;
+ ATOM class;
+
+ g_return_val_if_fail (GDK_IS_WIN32_DISPLAY (display), NULL);
+
+ self = GDK_WIN32_DISPLAY (display);
+
+ class = GetWindowLong (anid, GCW_ATOM);
+ if (class != self->toplevel_class && class != self->temp_class)
+ return NULL;
- return (GdkSurface*) gdk_win32_handle_table_lookup (anid);
+ return GDK_SURFACE (GetWindowLongPtr (anid, GWLP_USERDATA));
}
gboolean
diff --git a/gdk/win32/gdkwin32misc.h b/gdk/win32/gdkwin32misc.h
index 3582e81572..2542b745d7 100644
--- a/gdk/win32/gdkwin32misc.h
+++ b/gdk/win32/gdkwin32misc.h
@@ -69,21 +69,21 @@ G_BEGIN_DECLS
#endif
/* Return true if the GdkSurface is a win32 implemented window */
-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_4_4_FOR (GDK_IS_WIN32_SURFACE)
gboolean gdk_win32_surface_is_win32 (GdkSurface *window);
-GDK_AVAILABLE_IN_ALL
-HWND gdk_win32_surface_get_impl_hwnd (GdkSurface *window);
+GDK_DEPRECATED_IN_4_4_FOR (gdk_win32_surface_get_handle)
+HWND gdk_win32_surface_get_impl_hwnd (GdkSurface *window);
/* Return the Gdk* for a particular HANDLE */
-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_4_4
gpointer gdk_win32_handle_table_lookup (HWND handle);
/* Translate from window to Windows handle */
GDK_AVAILABLE_IN_ALL
HGDIOBJ gdk_win32_surface_get_handle (GdkSurface *window);
-GDK_AVAILABLE_IN_ALL
-GdkSurface * gdk_win32_surface_lookup_for_display (GdkDisplay *display,
- HWND anid);
+GDK_DEPRECATED_IN_4_4
+GdkSurface * gdk_win32_surface_lookup_for_display (GdkDisplay *display,
+ HWND anid);
#if defined (INSIDE_GDK_WIN32) || defined (GTK_COMPILATION) || defined (GTK_COMPILATION)
diff --git a/gdk/win32/meson.build b/gdk/win32/meson.build
index 796cec8fb9..de4c219a69 100644
--- a/gdk/win32/meson.build
+++ b/gdk/win32/meson.build
@@ -24,7 +24,6 @@ gdk_win32_sources = files([
'gdkvulkancontext-win32.c',
'gdkwin32cursor.h',
'gdkwin32display.h',
- 'gdkwin32id.c',
'gdksurface-win32.c',
])
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