Animating Window Sizing on OS X

General
1

Does anyone have an easy way on OS X to animate window sizing. I.E. when a ‘more’ button is clicked I want to increase the height of a window but in a nice smooth apple manor.

I can think of plenty of ways of doing this with timers etc but wondered if there was a native way/declare.

2

There is a Window.SmoothResize method in macoslib. Or, if you have the MBS plugins, you can use Window.SmoothResizeMBS.

3

Incase you don’t want the full overhead of macoslib or you don’t have the MBS plugins, you can add the following code to a Window subclass (or a module, just make sure to add the Extends parameter)

[code]Sub Resize(width as Integer, height as Integer)
#if TargetCocoa
Declare Function contentRectForFrameRect Lib “Cocoa” Selector “contentRectForFrameRect:” (id As Integer, windowFrame As NSRect) As NSRect
Declare Sub setFrameDisplayAnimate Lib “Cocoa” Selector “setFrame:display:animate:” (WindowRef As Integer, inNSRect As NSRect, Display As Boolean, Animate As Boolean)

DIM newRect As NSRect
newRect.X = me.Left
newRect.Y = me.Top
newRect.Width = Width
newRect.Height = Height

DIM contentRect As NSRect = contentRectForFrameRect(me.Handle, newRect)

newRect.y = Screen(0).Height - (newRect.Y + me.Height) - (newRect.Height - me.Height)
newRect.Height = newRect.Height - (contentRect.Height - newRect.Height)  // adjust for the titlebar/toolbar

setFrameDisplayAnimate me.Handle, newRect, TRUE, TRUE

#else
me.Width = width
me.Height = height
#endif
End Sub[/code]

You will also need a structure called NSRect with the following declarations

X As Single Y As Single Width As Single Height As Single

4

Plugging my own stuff here, but I get no money from this, so you can use my animation kit to do this as well. No plugins or declares required.

http://thezaz.com/code/animationkit/

5

… or, if you want OS X declares, here’s a very unfinished project, but Resize and SetFrame are working … and a handful of other methods & properties:
https://dl.dropboxusercontent.com/u/21200221/Xojo/MacOSWindow.xojo_xml_project.zip

6

[quote=153357:@Thom McGrath]Plugging my own stuff here, but I get no money from this, so you can use my animation kit to do this as well. No plugins or declares required.

http://thezaz.com/code/animationkit/[/quote]

Thanks Thom, this is a fantastic resource and very simple to use and gives great results.