> On Feb 20, 2017, at 1:44 PM, Yilei He <lionhy...@gmail.com> wrote:
>
> My whole view's code:
> import Cocoa
>
> class GradientBackgroundView: NSView {
>
>
> override func draw(_ dirtyRect: NSRect) {
> let gradient = NSGradient(colors: [
> NSColor(calibratedWhite: 0.96, alpha: 1),
> NSColor(calibratedWhite: 0.84, alpha: 1)
> ])
>
> gradient?.draw(in: dirtyRect, angle: 270)
This is your problem, you need to use the view.bounds here, not the dirtyRect.
The dirtyRect is a subregion of the bounds that needs to be redrawn, but your
code is basically doing the equivalent of drawing the entire view into whatever
dirtyRect you happen to get.
>
> let path = NSBezierPath()
> path.move(to: NSPoint(x: 0, y: 0))
> path.line(to: NSPoint(x: dirtyRect.maxX, y: 0))
> NSColor.darkGray.setStroke()
> path.stroke()
> }
>
> }
>
> Cheers
> Yilei He
>
> On 21 Feb 2017, 04:18 +1100, David Duncan <david.dun...@apple.com>, wrote:
>>
>>> On Feb 20, 2017, at 2:41 AM, Yilei He <lionhy...@gmail.com> wrote:
>>>
>>> Hi
>>>
>>> In my UI design, I have a custom NSView which only draws a NSGradient in
>>> draw(in:) method. I also have a NSTextField next to this custom view. Every
>>> time when text field is focused, the focus ring animates and leave a set of
>>> mark(animation tracks) on the custom view.
>>
>> Can you share your draw(in:) implementation?
>>
>>>
>>> After I tested this for a while, I found that the focus ring only leaves
>>> marks on gradient.
>>>
>>> Can anyone give a solution to remove the mark?
>>>
>>> Thanks
>>> Yilei He
>>>
>>>
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>>
>> --
>> David Duncan
>>
--
David Duncan
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