On 17 Dec 2008, at 00:56, Stéphane Sudre wrote:
On Dec 16, 2008, at 4:02 PM, Gerriet M. Denkmann wrote:
I am trying to build a pressable button: an on-off button (subclass
of NSButton), which, if pressed for more than 0.3 seconds, displays
a context menu.
My idea was:
Start a non-repeating timer in mouseDown: and schedule it with
NSEventTrackingRunLoopMode.
In mouseUp: invalidate the timer.
And in timerFired: display the context menu.
But: mouseUp: is never called. So: where should I invalidate the
timer?
And: if I send: [ NSMenu popUpContextMenu: menu withEvent:
mouseDownEvent forView: self ]
the button gets all messed up: no more drawRect: on mouse up, no
action sent.
Obviously I am doing it all wrong.
I have a button like this.
I use performSelector:withObject:afterDelay: in the mouseDown:,
cancel the delayed perform in mouseDragged: if the mouse cursor is
outside the button frame, put back the delayed perform if the mouse
cursor comes back in the button frame.
On mouseUp: I cancel the delayed perform if needed.
I tried your solution, but when I press the button for several seconds
still no menu comes up.
When I finally release the button in disgust, then suddenly the menu
is shown and I feel cheated for having wasted my time in pressing so
long.
I did not like this behaviour very much. Did I do something wrong?
Then I followed Peters advice:
Consider using a single-segment NSSegmentedControl. It has this
behavior built-in.
But again, I am not completely satisfied: I want the NSOnState shown
as done in an NSButton with buttonType = NSOnOffButton and bezelStyle
= NSTexturedSquareBezelStyle.
Specifially: the NSOnState should look indented with a black background.
And there should be almost no space wasted left and right of the image
or titel.
NSButton with a 20 x 20 image has a size of 24 x 24.
NSSegmentedControl with a 22 x 22 image reports a size of 44 x 24, but
the hight looks more like 22.
(When I supply it with an 24 x 24 image, part of the images get drawn
outside the button).
Also: a segmented control with an image has a lower height than one
with text. Which also reports a height of 24, but looks definitely
higher.
I tried messing around with [ [segmentedControl cell]
setCellAttribute:to] but this did not seem to do anything at all.
I could live with the hightlight in blue or with the wasted space
width-wise, but having different heights for image and text controls
looks extremely silly.
But maybe I am doing something silly?
Kind regards,
Gerriet.
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