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Win32: Auto-Raise and -Focus Windows on Hover

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On the Windows platform, raise windows and give them focus as the mouse
hovers over them. This allows keyboard shortcuts for the area under the
mouse without having to click the window caption to make them active.

Pull Request #104681
This commit is contained in:
Harley Acheson
2023-02-22 10:26:43 -08:00
parent 54fa3b124f
commit defd95afcd
1 changed files with 33 additions and 1 deletions
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34
intern/ghost/intern/GHOST_SystemWin32.cpp
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@@ -1826,7 +1826,10 @@ LRESULT WINAPI GHOST_SystemWin32::s_wndProc(HWND hwnd, uint msg, WPARAM wParam,
if (!window->m_mousePresent) {
WINTAB_PRINTF("HWND %p mouse enter\n", window->getHWND());
TRACKMOUSEEVENT tme = {sizeof(tme)};
tme.dwFlags = TME_LEAVE;
/* Request WM_MOUSELEAVE message when the cursor leaves the client area, and
* WM_MOUSEHOVER message after 50ms when in the client area. */
tme.dwFlags = TME_LEAVE | TME_HOVER;
tme.dwHoverTime = 50;
tme.hwndTrack = hwnd;
TrackMouseEvent(&tme);
window->m_mousePresent = true;
@@ -1843,6 +1846,35 @@ LRESULT WINAPI GHOST_SystemWin32::s_wndProc(HWND hwnd, uint msg, WPARAM wParam,
break;
}
case WM_MOUSEHOVER: {
/* Mouse Tracking is now off. TrackMouseEvent restarts in MouseMove. */
window->m_mousePresent = false;
/* Auto-focus only occurs within Blender windows, not with _other_ applications. */
HWND old_hwnd = ::GetFocus();
if (hwnd != old_hwnd) {
HWND new_parent = ::GetParent(hwnd);
HWND old_parent = ::GetParent(old_hwnd);
if (hwnd == old_parent || old_hwnd == new_parent) {
/* Child to its parent, parent to its child. */
::SetFocus(hwnd);
}
else if (new_parent != HWND_DESKTOP && new_parent == old_parent) {
/* Between siblings of same parent. */
::SetFocus(hwnd);
}
else if (!new_parent && !old_parent) {
/* Between main windows that don't overlap. */
RECT new_rect, old_rect, dest_rect;
::GetWindowRect(hwnd, &new_rect);
::GetWindowRect(old_hwnd, &old_rect);
if (!IntersectRect(&dest_rect, &new_rect, &old_rect)) {
::SetFocus(hwnd);
}
}
}
break;
}
case WM_MOUSEWHEEL: {
/* The WM_MOUSEWHEEL message is sent to the focus window
* when the mouse wheel is rotated. The DefWindowProc