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GDK W32: Re-implement AeroSnap for CSD windows

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It works exactly like AeroSnap.
Except for shift+win+left/right, which is left for AeroSnap
to handle (AeroSnap takes action before we get the message,
so there's no way for us to override it).
The only thing that doesn't work is shift+win+left/right on
a maximized window, for reasons unknown at the moment.

This only implements winkey+stuff behaviour of AeroSnap,
not the drag-to-the-edge-and-something-funny-happens one.

https://bugzilla.gnome.org/show_bug.cgi?id=763013
This commit is contained in:
Руслан Ижбулатов
2016-03-08 02:33:47 +00:00
parent 27a1b50bc6
commit 0ce217cf94
4 changed files with 369 additions and 0 deletions
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42
gdk/win32/gdkevents-win32.c
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@ -2288,6 +2288,48 @@ gdk_event_translate (MSG *msg,
if (GDK_WINDOW_DESTROYED (window))
break;
if (msg->message == WM_KEYUP &&
!GDK_WINDOW_DESTROYED (gdk_window_get_toplevel (window)) &&
_gdk_win32_window_lacks_wm_decorations (gdk_window_get_toplevel (window)) && /* For CSD only */
((GetKeyState (VK_LWIN) & 0x8000) ||
(GetKeyState (VK_RWIN) & 0x8000)))
{
GdkWin32AeroSnapCombo combo = GDK_WIN32_AEROSNAP_COMBO_NOTHING;
gboolean lshiftdown = GetKeyState (VK_LSHIFT) & 0x8000;
gboolean rshiftdown = GetKeyState (VK_RSHIFT) & 0x8000;
gboolean oneshiftdown = (lshiftdown || rshiftdown) && !(lshiftdown && rshiftdown);
switch (msg->wParam)
{
case VK_UP:
combo = GDK_WIN32_AEROSNAP_COMBO_UP;
break;
case VK_DOWN:
combo = GDK_WIN32_AEROSNAP_COMBO_DOWN;
break;
case VK_LEFT:
combo = GDK_WIN32_AEROSNAP_COMBO_LEFT;
break;
case VK_RIGHT:
combo = GDK_WIN32_AEROSNAP_COMBO_RIGHT;
break;
}
if (oneshiftdown && combo != GDK_WIN32_AEROSNAP_COMBO_NOTHING)
combo += 4;
/* These are the only combos that Windows WM does handle for us */
if (combo == GDK_WIN32_AEROSNAP_COMBO_SHIFTLEFT ||
combo == GDK_WIN32_AEROSNAP_COMBO_SHIFTRIGHT)
combo = GDK_WIN32_AEROSNAP_COMBO_NOTHING;
if (combo != GDK_WIN32_AEROSNAP_COMBO_NOTHING)
{
_gdk_win32_window_handle_aerosnap (gdk_window_get_toplevel (window), combo);
break;
}
}
event = gdk_event_new ((msg->message == WM_KEYDOWN ||
msg->message == WM_SYSKEYDOWN) ?
GDK_KEY_PRESS : GDK_KEY_RELEASE);