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Added a small time hysteresis: submenus are only opened if the user keeps the mouse there for a while. I'd like feedback on this 

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16015 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini 2006-01-21 09:23:59 +00:00
parent 3276412ef2
commit 0219459ba0
1 changed files with 18 additions and 3 deletions
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21
src/kits/interface/Menu.cpp
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@ -1108,17 +1108,31 @@ BMenu::_track(int *action, long start)
ulong buttons;
BMenuItem *item = NULL;
int localAction = MENU_ACT_NONE;
bigtime_t startTime = system_time();
bigtime_t clickTime = 0;
get_click_speed(&clickTime);
do {
if (!LockLooper())
break;
bigtime_t snoozeAmount = 50000;
BPoint location;
GetMouse(&location, &buttons);
item = HitTestItems(location, B_ORIGIN);
if (item != NULL) {
if (item != fSelected)
if (item != fSelected) {
SelectItem(item, -1);
startTime = system_time();
snoozeAmount = 20000;
} else if (system_time() > clickTime + startTime && item->Submenu()
&& item->Submenu()->Window() == NULL) {
// Open the submenu if it's not opened yet, but only if
// the mouse pointer stayed over there for some time
// (hysteresis)
SelectItem(item);
}
} else {
if (OverSuper(location)) {
UnlockLooper();
@ -1128,7 +1142,8 @@ BMenu::_track(int *action, long start)
SelectItem(NULL);
}
if (fSelected != NULL && fSelected->Submenu() != NULL) {
if (fSelected != NULL && fSelected->Submenu() != NULL
&& fSelected->Submenu()->Window() != NULL) {
UnlockLooper();
int submenuAction = MENU_ACT_NONE;
@ -1145,7 +1160,7 @@ BMenu::_track(int *action, long start)
UnlockLooper();
snooze(50000);
snooze(snoozeAmount);
} while (buttons != 0);
if (localAction == MENU_ACT_NONE) {