Add CoreGraphics bindings and macOS getAllWindows() implementation

[dbwiddis]

Adds CoreGraphics interface to c.s.j.p.mac providing JNA bindings for the macOS Quartz Window Services and Quartz Display Services APIs.

Also implements getAllWindows() in MacWindowUtils, giving macOS parity with the existing Windows implementation in WindowUtils. (Note that I had to use the Win32 HWND class to be compatible with the DesktopWindow class.)

Window Services

Function	Description
CGWindowListCopyWindowInfo	Enumerate windows with their properties
CGRectMakeWithDictionaryRepresentation	Parse bounds dictionary into CGRect

Constants: kCGWindowListOption* (filtering), kCGWindow* (dictionary keys), sharing types, backing store types.

Display Services

Function	Description
CGMainDisplayID	Get main display ID
CGDisplayBounds	Get display bounds
CGDisplayPixelsWide / CGDisplayPixelsHigh	Display dimensions
CGGetActiveDisplayList / CGGetOnlineDisplayList	Enumerate displays
CGDisplayRotation	Display rotation angle
CGDisplayIsActive / CGDisplayIsMain / CGDisplayIsBuiltin	Display state queries
CGDisplayVendorNumber / CGDisplayModelNumber / CGDisplaySerialNumber	Display identification

Structures

CGPoint, CGSize, CGRect (with ByValue for return types)

MacWindowUtils.getAllWindows()

Uses CGWindowListCopyWindowInfo to enumerate windows, filtering to normal windows (layer 0). Extracts title, owner name, window ID (as HWND), and bounds, using the DesktopWindow class used by the Windows implementation.

Test Output

On my mac:

[junit] Testsuite: com.sun.jna.platform.mac.CoreGraphicsTest
[junit] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.349 sec
[junit] 
[junit] ------------- Standard Output ---------------
[junit] First window bounds: x=193.0 y=789.0 w=9.0 h=18.0
[junit] On-screen windows (excluding desktop): 57
[junit] Main display rotation: 0.0
[junit] Main display bounds: 3440.0x1440.0
[junit] Active displays: 2
[junit]   Display 3: 3440x1440
[junit]   Display 1: 1728x1117
[junit] Total windows: 376
[junit] First window owner: CursorUIViewService
[junit] First window PID: 2323
[junit] Main display ID: 3
[junit] ------------- ---------------- ---------------

and

➜  jna git:(add-coregraphics-bindings)   jshell --class-path build/jna.jar:contrib/platform/dist/jna-platform.jar -R-XstartOnFirstThread <<< '
  import com.sun.jna.platform.*;
  var windows = WindowUtils.getAllWindows(true);
  System.out.println("Found " + windows.size() + " windows");
  for (var w : windows) System.out.println(w.getTitle() + " | " + w.getFilePath() + " | " + w.getLocAndSize());
  /exit'
|  Welcome to JShell -- Version 25.0.2
|  For an introduction type: /help intro

jshell> 
jshell> 
jshell> windows ==> [com.sun.jna.platform.DesktopWindow@54a097cc, com ... orm.DesktopWindow@97e1986]

jshell> Found 17 windows

jshell>  | Terminal | java.awt.Rectangle[x=140,y=295,width=1332,height=791]
 | Google Chrome | java.awt.Rectangle[x=944,y=30,width=1534,height=1288]
 | Sublime Text | java.awt.Rectangle[x=1607,y=238,width=1710,height=1002]
 | Eclipse | java.awt.Rectangle[x=278,y=52,width=2301,height=1274]
 | Microsoft Outlook | java.awt.Rectangle[x=1129,y=104,width=1728,height=994]
 | Messages | java.awt.Rectangle[x=304,y=191,width=1024,height=768]
 | Slack | java.awt.Rectangle[x=111,y=122,width=1353,height=1016]
 | Finder | java.awt.Rectangle[x=1804,y=285,width=1556,height=851]
 | Code | java.awt.Rectangle[x=1674,y=249,width=1567,height=848]
 | Code | java.awt.Rectangle[x=1665,y=217,width=1584,height=883]
 | Numbers | java.awt.Rectangle[x=1090,y=30,width=1260,height=1201]
 | zoom.us | java.awt.Rectangle[x=194,y=271,width=1280,height=960]
 | Preview | java.awt.Rectangle[x=4,y=34,width=708,height=328]
 | Preview | java.awt.Rectangle[x=4,y=34,width=708,height=328]
 | Preview | java.awt.Rectangle[x=4,y=34,width=708,height=328]
 | Safari | java.awt.Rectangle[x=1185,y=286,width=1324,height=940]
 | Print Center | java.awt.Rectangle[x=1270,y=443,width=900,height=450]