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Started the implementation of mouse crossing on Windows.

This commit is contained in:
Pietro Gagliardi 2015-12-18 18:06:45 -05:00
parent ce042eb12a
commit 4b114f2764
2 changed files with 35 additions and 0 deletions
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2
windows/area.h
View File

@ -21,6 +21,8 @@ struct uiArea {
clickCounter cc;
BOOL capturing;
BOOL inside;
ID2D1HwndRenderTarget *rt;
};

33
windows/areaevents.c
View File

@ -92,6 +92,34 @@ static void areaMouseEvent(uiArea *a, uintmax_t down, uintmax_t up, WPARAM wPar
(*(a->ah->MouseEvent))(a->ah, a, &me);
}
// see https://blogs.msdn.microsoft.com/oldnewthing/20031013-00/?p=42193
// TODO this does not work while captured
static void onMouseEntered(uiArea *a)
{
TRACKMOUSEEVENT tm;
if (a->inside)
return;
ZeroMemory(&tm, sizeof (TRACKMOUSEEVENT));
tm.cbSize = sizeof (TRACKMOUSEEVENT);
tm.dwFlags = TME_LEAVE;
tm.hwndTrack = a->hwnd;
if (_TrackMouseEvent(&tm) == 0)
logLastError("error setting up mouse leave events in onMouseEntered()");
a->inside = TRUE;
(*(a->ah->MouseCrossed))(a->ah, a, 0);
// TODO figure out why we did this to begin with; either we do it on both GTK+ and Windows or not at all
clickCounterReset(&(a->cc));
}
static void onMouseLeft(uiArea *a)
{
a->inside = FALSE;
(*(a->ah->MouseCrossed))(a->ah, a, 1);
// TODO figure out why we did this to begin with; either we do it on both GTK+ and Windows or not at all
clickCounterReset(&(a->cc));
}
// we use VK_SNAPSHOT as a sentinel because libui will never support the print screen key; that key belongs to the user
struct extkeymap {
WPARAM vk;
@ -244,9 +272,14 @@ BOOL areaDoEvents(uiArea *a, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT *l
*lResult = 0;
return TRUE;
case WM_MOUSEMOVE:
onMouseEntered(a);
areaMouseEvent(a, 0, 0, wParam, lParam);
*lResult = 0;
return TRUE;
case WM_MOUSELEAVE:
onMouseLeft(a);
*lResult = 0;
return TRUE;
case WM_LBUTTONDOWN:
SetFocus(a->hwnd);
areaMouseEvent(a, 1, 0, wParam, lParam);