NSGradient does not work as expected

Scripting Forums AppleScriptObjC and Xcode
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#1

Hi, I have a window with a text field and some buttons and I would like to know how you can set the background using NSGradient. I firstly did something like this with NSColor properties:

 set backgroundColor to current application's NSColor's colorWithCalibratedRed_green_blue_alpha_(126.0, 231.0, 165.0, 1)
dialogWindow's setBackgroundColor_(backgroundColor)

And it works properly, that’s it fills all the window without leaving empty (for example the outline of buttons). Instead, if I try to use NSGradient like this:

set backgroundColor to current application's NSGradient's alloc()'s initWithStartingColor_endingColor_(yellowColor, greenColor)
backgroundColor's drawFromPoint_toPoint_options_((100,0),(500,0), 1)

Yes, it draws the window but not as NSColor did, I mean, there are some kind of white space (outlines of buttons, rect of text field etc.). What might the problem be?

#2

You’re probably going to have to do something like subclass the window and do it in the -drawRect: handler, otherwise it’s never going to get updated.

#3

By using ObjectiveC with a method like this:

or can it be performed directly with ASOC?

#4

You could make an ASObjC subclass, and implement it as on drawRect:theRect.

But drawing code has to be very efficient because it can be called so often, so I’m always a bit wary about suggesting things like drawRect: in AppleScript code.

You might want to look here and see if someone has a ready-made window you can use:

www.cocoacontrols.com

#5

Could you be more specific about what should be done? I created the window on the MainMenu.xib, not via AS (using e.g. NSWindow’s alloc()'s initWithContentRect_styleMask_backing_defer_), so what could I do if I don’t have a Rect?

#6

This should tell you what you need:

stackoverflow.com/questions/11915033/how-to-set-nsgradient-to-nswindow-background

#7

I’ve already seen it but it’s not actually what I was looking for as I don’t have a Custom View. Anyway, many thanks, I’ll try implement it differently.

#8

Each window (NSWindow) must have a content view (NSView) to draw the contents in.
When you’re creating the window in IB, the view is automatically created for you

#9

You change the class of your window’s content view to be an instance of the custom NSView subview you create.