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Added hysteresis to the item selection code.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@5620 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
David Lazaro Saz 1999-12-23 23:31:59 +00:00
parent afc8cb7775
commit 5ca0d2c57d
2 changed files with 36 additions and 41 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
1999-12-24 David Lazaro <khelekir@encomix.es>
* Source/NSMenuView.m ([NSMenuView -trackWithEvent:]): Added hysteresis
to the item selection code.
Wed Dec 22 12:04:00 1999 Richard Frith-Macdonald <richard@brainstorm.co.uk>
* Source/NSImage.m: When creating an off-screen cache, fill with

72
Source/NSMenuView.m
View file

@ -708,8 +708,7 @@ static float GSMenuBarHeight = 25.0; // A wild guess.
[targetMenuView setHighlightedItemIndex: -1];
}
#define MOVE_THRESHOLD_DELTA 1.0
#define DELAY_MULTIPLIER 12
#define MENU_SELECT_DELAY 4
- (BOOL)trackWithEvent: (NSEvent *)event
{
@ -721,82 +720,73 @@ static float GSMenuBarHeight = 25.0; // A wild guess.
int index;
NSPoint location;
NSPoint lastLocation = {0,0};
float lastX = [window mouseLocationOutsideOfEventStream].x;
NSMenu *alreadyAttachedMenu = NO;
BOOL delayedSelect = NO;
int delayCount = DELAY_MULTIPLIER;
int delayCount = 0;
do
{
location = [window mouseLocationOutsideOfEventStream];
index = [self indexOfItemAtPoint: location];
lastX = location.x;
location = [window mouseLocationOutsideOfEventStream];
index = [self indexOfItemAtPoint: location];
if ([event type] == NSPeriodic)
{
if ([menuv_menu isPartlyOffScreen])
{
NSPoint pointerLoc = [window convertBaseToScreen:
location];
NSPoint pointerLoc = [window convertBaseToScreen: location];
// TODO: Why 1 in the Y axis?
if (pointerLoc.x == 0 || pointerLoc.y == 1 ||
pointerLoc.x == [[window screen] frame].size.width
- 1)
pointerLoc.x == [[window screen] frame].size.width - 1)
[menuv_menu shiftOnScreen];
}
if ([event type] == NSPeriodic && delayedSelect && !delayCount)
else if (delayedSelect && !--delayCount)
{
if (location.x - lastLocation.x < MOVE_THRESHOLD_DELTA ||
abs(location.y - lastLocation.y) < MOVE_THRESHOLD_DELTA)
delayedSelect = NO;
lastLocation = location;
delayedSelect = NO;
}
delayCount = delayCount ? --delayCount : DELAY_MULTIPLIER;
}
if (index == -1)
{
if (delayedSelect)
{
delayedSelect = NO;
}
if ([menuv_menu attachedMenu])
{
if ([[self attachedMenuView] trackWithEvent: event])
return YES;
}
else
else if (index != menuv_highlightedItemIndex)
{
if (index != menuv_highlightedItemIndex)
[self setHighlightedItemIndex: index];
[self setHighlightedItemIndex: index];
}
if (([menuv_menu supermenu] && ![menuv_menu isTornOff])
|| [menuv_menu isFollowTransient])
return NO;
}
else
else if (index != menuv_highlightedItemIndex && !delayedSelect)
{
if (index != menuv_highlightedItemIndex)
if (location.x - lastX > 0 && [menuv_menu attachedMenu])
{
if (![menuv_menu attachedMenu] || !delayedSelect)
{
[self setHighlightedItemIndex: index];
delayCount = MENU_SELECT_DELAY;
delayedSelect = YES;
}
if ([menuv_menu attachedMenu])
[self detachSubmenu];
if (!delayedSelect)
{
[self setHighlightedItemIndex: index];
if ((alreadyAttachedMenu =
[[menuv_items_link objectAtIndex: index] submenu]))
{
[self attachSubmenuForItemAtIndex: index];
delayedSelect = YES;
delayCount = DELAY_MULTIPLIER;
}
else
{
delayedSelect = NO;
}
}
if ([menuv_menu attachedMenu])
[self detachSubmenu];
if ((alreadyAttachedMenu =
[[menuv_items_link objectAtIndex: index] submenu]))
[self attachSubmenuForItemAtIndex: index];
}
}