devdraw: drop pre-metal macOS support

We didn't start using Metal until macOS 10.14,
but it was available on 10.13, which is currently
the oldest Apple-supported version of macOS.
Simplify by deleting the old code.

3 files changed, 5 insertions, 1688 deletions

diff --git a/src/cmd/devdraw/cocoa-screen.m b/src/cmd/devdraw/cocoa-screen.m
deleted file mode 100644
index 97128da2..00000000
--- a/src/cmd/devdraw/cocoa-screen.m
+++ /dev/null
@@ -1,1674 +0,0 @@
-/*
- * Cocoa's event loop must be in main thread.
- *
- * Unless otherwise stated, all coordinate systems
- * are bottom-left-based.
- */
-
-#define Cursor OSXCursor
-#define Point OSXPoint
-#define Rect OSXRect
-
-#import <Cocoa/Cocoa.h>
-
-#undef Cursor
-#undef Point
-#undef Rect
-
-#include <u.h>
-#include <libc.h>
-#include  "cocoa-thread.h"
-#include <draw.h>
-#include <memdraw.h>
-#include <keyboard.h>
-#include <cursor.h>
-#include "cocoa-screen.h"
-#include "osx-keycodes.h"
-#include "devdraw.h"
-#include "bigarrow.h"
-#include "glendapng.h"
-
-// Use non-deprecated names.
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101200
-#define NSKeyDown NSEventTypeKeyDown
-#define NSShiftKeyMask NSEventModifierFlagShift
-#define NSAlternateKeyMask NSEventModifierFlagOption
-#define NSCommandKeyMask NSEventModifierFlagCommand
-#define NSResizableWindowMask NSWindowStyleMaskResizable
-#define NSLeftMouseDown NSEventTypeLeftMouseDown
-#define NSLeftMouseUp NSEventTypeLeftMouseUp
-#define NSRightMouseDown NSEventTypeRightMouseDown
-#define NSRightMouseUp NSEventTypeRightMouseUp
-#define NSOtherMouseDown NSEventTypeOtherMouseDown
-#define NSOtherMouseUp NSEventTypeOtherMouseUp
-#define NSScrollWheel NSEventTypeScrollWheel
-#define NSMouseMoved NSEventTypeMouseMoved
-#define NSLeftMouseDragged NSEventTypeLeftMouseDragged
-#define NSRightMouseDragged NSEventTypeRightMouseDragged
-#define NSOtherMouseDragged NSEventTypeOtherMouseDragged
-#define NSCompositeCopy NSCompositingOperationCopy
-#define NSCompositeSourceIn NSCompositingOperationSourceIn
-#define NSFlagsChanged NSEventTypeFlagsChanged
-#define NSTitledWindowMask NSWindowStyleMaskTitled
-#define NSClosableWindowMask NSWindowStyleMaskClosable
-#define NSMiniaturizableWindowMask NSWindowStyleMaskMiniaturizable
-#define NSBorderlessWindowMask NSWindowStyleMaskBorderless
-#endif
-
-AUTOFRAMEWORK(Cocoa)
-
-#define LOG	if(0)NSLog
-#define panic	sysfatal
-
-int usegestures = 0;
-int useliveresizing = 0;
-int useoldfullscreen = 0;
-int usebigarrow = 0;
-
-static void setprocname(const char*);
-
-/*
- * By default, devdraw uses retina displays.
- * Set devdrawretina=0 in the environment to override.
- */
-int devdrawretina = 1;
-
-void
-usage(void)
-{
-	fprint(2, "usage: devdraw (don't run directly)\n");
-	threadexitsall("usage");
-}
-
-@interface appdelegate : NSObject<NSApplicationDelegate,NSWindowDelegate> @end
-
-NSObject<NSApplicationDelegate,NSWindowDelegate> *myApp;
-
-void
-threadmain(int argc, char **argv)
-{
-	char *envvar;
-
-	/*
-	 * Move the protocol off stdin/stdout so that
-	 * any inadvertent prints don't screw things up.
-	 */
-	dup(0,3);
-	dup(1,4);
-	close(0);
-	close(1);
-	open("/dev/null", OREAD);
-	open("/dev/null", OWRITE);
-
-	ARGBEGIN{
-	case 'D':		/* for good ps -a listings */
-		break;
-	case 'f':
-		useoldfullscreen = 1;
-		break;
-	case 'g':
-		usegestures = 1;
-		break;
-	case 'b':
-		usebigarrow = 1;
-		break;
-	default:
-		usage();
-	}ARGEND
-	
-	setprocname(argv0);
-
-	if (envvar = getenv("devdrawretina"))
-		devdrawretina = atoi(envvar) > 0;
-
-	if(OSX_VERSION < 100700)
-		[NSAutoreleasePool new];
-
-	[NSApplication sharedApplication];
-	[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
-	myApp = [appdelegate new];
-	[NSApp setDelegate:myApp];
-	[NSApp run];
-}
-
-#define WIN	win.ofs[win.isofs]
-
-struct
-{
-	NSWindow	*ofs[2];	/* ofs[1] for old fullscreen; ofs[0] else */
-	int			isofs;
-	int			isnfs;
-	NSView		*content;
-	NSBitmapImageRep	*img;
-	int			needimg;
-	int			deferflush;
-	NSCursor		*cursor;
-	CGFloat		topointscale;
-	CGFloat		topixelscale;
-} win;
-
-struct
-{
-	NSCursor	*bigarrow;
-	int		kbuttons;
-	int		mbuttons;
-	NSPoint	mpos;
-	int		mscroll;
-	int		willactivate;
-} in;
-
-static void hidebars(int);
-static void flushimg(NSRect);
-static void autoflushwin(int);
-static void flushwin(void);
-static void followzoombutton(NSRect);
-static void getmousepos(void);
-static void makeicon(void);
-static void makemenu(void);
-static void makewin(char*);
-static void sendmouse(void);
-static void kicklabel0(char*);
-static void setcursor0(Cursor*);
-static void togglefs(void);
-static void acceptresizing(int);
-
-static NSCursor* makecursor(Cursor*);
-
-static NSSize winsizepixels();
-static NSSize winsizepoints();
-static NSRect scalerect(NSRect, CGFloat);
-static NSPoint scalepoint(NSPoint, CGFloat);
-static NSRect dilate(NSRect);
-
-@implementation appdelegate
-- (void)applicationDidFinishLaunching:(id)arg
-{
-	in.bigarrow = makecursor(&bigarrow);
-	makeicon();
-	makemenu();
-	[NSApplication
-		detachDrawingThread:@selector(callservep9p:)
-		toTarget:[self class] withObject:nil];
-}
-
-- (void)windowDidBecomeKey:(id)arg
-{
-	getmousepos();
-	sendmouse();
-}
-- (void)windowDidResize:(id)arg
-{
-	getmousepos();
-	sendmouse();
-}
-- (void)windowWillStartLiveResize:(id)arg
-{
-	if(useliveresizing == 0)
-		[win.content setHidden:YES];
-}
-- (void)windowDidEndLiveResize:(id)arg
-{
-	if(useliveresizing == 0)
-		[win.content setHidden:NO];
-}
-- (void)windowDidChangeScreen:(id)arg
-{
-	if(win.isnfs || win.isofs)
-		hidebars(1);
-	[win.ofs[1] setFrame:[[WIN screen] frame] display:YES];
-}
-- (BOOL)windowShouldZoom:(id)arg toFrame:(NSRect)r
-{
-	followzoombutton(r);
-	return YES;
-}
-- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(id)arg
-{
-	return YES;
-}
-- (void)applicationDidBecomeActive:(id)arg{ in.willactivate = 0;}
-- (void)windowWillEnterFullScreen:(id)arg{ acceptresizing(1);}
-- (void)windowDidEnterFullScreen:(id)arg{ win.isnfs = 1; hidebars(1);}
-- (void)windowWillExitFullScreen:(id)arg{ win.isnfs = 0; hidebars(0);}
-- (void)windowDidExitFullScreen:(id)arg
-{
-	NSButton *b;
-
-	b = [WIN standardWindowButton:NSWindowMiniaturizeButton];
-
-	if([b isEnabled] == 0){
-		[b setEnabled:YES];
-		hidebars(0);
-	}
-}
-- (void)windowWillClose:(id)arg
-{
-	autoflushwin(0);	/* can crash otherwise */
-}
-
-+ (void)callservep9p:(id)arg
-{
-	servep9p();
-	[NSApp terminate:self];
-}
-- (void)plumbmanual:(id)arg
-{
-	if(fork() != 0)
-		return;
-	execl("plumb", "plumb", "devdraw(1)", nil);
-}
-+ (void)callflushwin:(id)arg{ flushwin();}
-- (void)calltogglefs:(id)arg{ togglefs();}
-
-+ (void)callflushimg:(NSValue*)v{ flushimg([v rectValue]);}
-+ (void)callmakewin:(NSValue*)v{ makewin([v pointerValue]);}
-+ (void)callsetcursor0:(NSValue*)v{ setcursor0([v pointerValue]);}
-+ (void)callkicklabel0:(NSValue*)v{ kicklabel0([v pointerValue]);}
-@end
-
-static Memimage* initimg(void);
-
-Memimage*
-attachscreen(char *label, char *winsize)
-{
-	static int first = 1;
-
-	if(first)
-		first = 0;
-	else
-		panic("attachscreen called twice");
-
-	if(label == nil)
-		label = "gnot a label";
-	if(strcmp(label, "page") == 0)
-		useliveresizing = 1;
-
-	/*
-	 * Create window in main thread, else no cursor
-	 * change while resizing.
-	 */
-	[appdelegate
-		performSelectorOnMainThread:@selector(callmakewin:)
-		withObject:[NSValue valueWithPointer:winsize]
-		waitUntilDone:YES];
-//	makewin(winsize);
-
-	kicklabel(label);
-	return initimg();
-}
-
-@interface appwin : NSWindow @end
-@interface contentview : NSView @end
-
-@implementation appwin
-- (NSTimeInterval)animationResizeTime:(NSRect)r
-{
-	return 0;
-}
-- (BOOL)canBecomeKeyWindow
-{
-	return YES;	/* else no keyboard for old fullscreen */
-}
-- (void)makeKeyAndOrderFront:(id)arg
-{
-	LOG(@"makeKeyAndOrderFront");
-
-	autoflushwin(1);
-	[win.content setHidden:NO];
-	[super makeKeyAndOrderFront:arg];
-}
-- (void)miniaturize:(id)arg
-{
-	[super miniaturize:arg];
-	[NSApp hide:nil];
-
-	[win.content setHidden:YES];
-	autoflushwin(0);
-}
-- (void)deminiaturize:(id)arg
-{
-	autoflushwin(1);
-	[win.content setHidden:NO];
-	[super deminiaturize:arg];
-}
-
-- (NSDragOperation)draggingEntered:(id)arg
-{
-	NSPasteboard *b;
-	NSDragOperation op;
-	
-	op = [arg draggingSourceOperationMask];
-	b = [arg draggingPasteboard];
-	
-	if([[b types] containsObject:NSFilenamesPboardType])
-	if(op&NSDragOperationLink)
-		return NSDragOperationLink;
-	
-	return NSDragOperationNone;
-}
-
-- (BOOL)performDragOperation:(id)arg
-{
-	NSPasteboard *b;
-	NSArray *files;
-	int i, n;
-
-	b = [arg draggingPasteboard];
-	if(![[b types] containsObject:NSFilenamesPboardType])
-		return NO;
-
-	files = [b propertyListForType:NSFilenamesPboardType];
-	n = [files count];
-	for(i=0; i<n; i++)
-	if(fork() == 0)
-		execl("macedit", "macedit", [[files objectAtIndex:i] UTF8String], nil);
-
-	return YES;
-}
-
-@end
-
-double
-min(double a, double b)
-{
-	return a<b? a : b;
-}
-
-enum
-{
-	Winstyle = NSTitledWindowMask
-		| NSClosableWindowMask
-		| NSMiniaturizableWindowMask
-		| NSResizableWindowMask
-};
-
-static void
-makewin(char *s)
-{
-	NSRect r, sr;
-	NSWindow *w;
-	Rectangle wr;
-	int i, set;
-
-	sr = [[NSScreen mainScreen] frame];
-	r = [[NSScreen mainScreen] visibleFrame];
-
-	if(s && *s){
-		if(parsewinsize(s, &wr, &set) < 0)
-			sysfatal("%r");
-	}else{
-		wr = Rect(0, 0, sr.size.width*2/3, sr.size.height*2/3);
-		set = 0;
-	}
-
-	r.origin.x = wr.min.x;
-	r.origin.y = sr.size.height-wr.max.y;	/* winsize is top-left-based */
-	r.size.width = min(Dx(wr), r.size.width);
-	r.size.height = min(Dy(wr), r.size.height);
-	r = [NSWindow contentRectForFrameRect:r
-		styleMask:Winstyle];
-
-	w = [[appwin alloc]
-		initWithContentRect:r
-		styleMask:Winstyle
-		backing:NSBackingStoreBuffered defer:NO];
-	[w setTitle:@"devdraw"];
-
-	if(!set)
-		[w center];
-#if OSX_VERSION >= 100700
-	[w setCollectionBehavior:
-		NSWindowCollectionBehaviorFullScreenPrimary];
-#endif
-	[w setContentMinSize:NSMakeSize(128,128)];
-
-	[w registerForDraggedTypes:[NSArray arrayWithObjects: 
-		NSFilenamesPboardType, nil]];
-
-	win.ofs[0] = w;
-	win.ofs[1] = [[appwin alloc]
-		initWithContentRect:sr
-		styleMask:NSBorderlessWindowMask
-		backing:NSBackingStoreBuffered defer:YES];
-	for(i=0; i<2; i++){
-		[win.ofs[i] setAcceptsMouseMovedEvents:YES];
-		[win.ofs[i] setDelegate:myApp];
-		[win.ofs[i] setDisplaysWhenScreenProfileChanges:NO];
-	}
-	win.isofs = 0;
-	win.content = [contentview new];
-	[WIN setContentView:win.content];
-
-	topwin();
-}
-
-static Memimage*
-initimg(void)
-{
-	Memimage *i;
-	NSSize size, ptsize;
-	Rectangle r;
-
-	size = winsizepixels();
-	LOG(@"initimg %.0f %.0f", size.width, size.height);
-
-	r = Rect(0, 0, size.width, size.height);
-	i = allocmemimage(r, XBGR32);
-	if(i == nil)
-		panic("allocmemimage: %r");
-	if(i->data == nil)
-		panic("i->data == nil");
-
-	win.img = [[NSBitmapImageRep alloc]
-		initWithBitmapDataPlanes:&i->data->bdata
-		pixelsWide:Dx(r)
-		pixelsHigh:Dy(r)
-		bitsPerSample:8
-		samplesPerPixel:3
-		hasAlpha:NO
-		isPlanar:NO
-		colorSpaceName:NSDeviceRGBColorSpace
-		bytesPerRow:bytesperline(r, 32)
-		bitsPerPixel:32];
-	ptsize = winsizepoints();
-	[win.img setSize: ptsize];
-	win.topixelscale = size.width / ptsize.width;
-	win.topointscale = 1.0f / win.topixelscale;
-	
-	// NOTE: This is not really the display DPI.
-	// On retina, topixelscale is 2; otherwise it is 1.
-	// This formula gives us 220 for retina, 110 otherwise.
-	// That's not quite right but it's close to correct.
-	// http://en.wikipedia.org/wiki/List_of_displays_by_pixel_density#Apple
-	displaydpi = win.topixelscale * 110;
-
-	return i;
-}
-
-void
-resizeimg(void)
-{
-	[win.img release];
-	_drawreplacescreenimage(initimg());
-
-	mouseresized = 1;
-	sendmouse();
-}
-
-static void
-waitimg(int msec)
-{
-	NSDate *limit;
-	int n;
-
-	win.needimg = 1;
-	win.deferflush = 0;
-
-	n = 0;
-	limit = [NSDate dateWithTimeIntervalSinceNow:msec/1000.0];
-	do{
-		[[NSRunLoop currentRunLoop]
-			runMode:@"waiting image"
-			beforeDate:limit];
-		n++;
-	}while(win.needimg && [(NSDate*)[NSDate date] compare:limit]<0);
-
-	win.deferflush = win.needimg;
-
-	LOG(@"waitimg %s (%d loop)", win.needimg?"defer":"ok", n);
-}
-
-void
-_flushmemscreen(Rectangle r)
-{
-	static int n;
-	NSRect rect;
-
-	LOG(@"_flushmemscreen");
-
-	if(n==0){
-		n++;
-		return;	/* to skip useless white init rect */
-	}else
-	if(n==1){
-		[WIN performSelectorOnMainThread:
-			@selector(makeKeyAndOrderFront:)
-			withObject:nil
-			waitUntilDone:NO];
-		n++;
-	}else
-	if([win.content canDraw] == 0)
-		return;
-
-	rect = NSMakeRect(r.min.x, r.min.y, Dx(r), Dy(r));
-
-	// This can get blocked behind responding to mouse events,
-	// which need to acquire the zlock, so let go of it during
-	// the flush. Perhaps the waitUntilDone:YES is wrong?
-	zunlock();
-	[appdelegate
-		performSelectorOnMainThread:@selector(callflushimg:)
-		withObject:[NSValue valueWithRect:rect]
-		waitUntilDone:YES
-		modes:[NSArray arrayWithObjects:
-			NSRunLoopCommonModes,
-			@"waiting image", nil]];
-	zlock();
-}
-
-static void drawimg(NSRect, uint);
-static void drawresizehandle(void);
-
-enum
-{
-	Pixel = 1,
-	Barsize = 4*Pixel,
-	Cornersize = 3*Pixel,
-	Handlesize = 3*Barsize + 1*Pixel,
-};
-
-/*
- * |rect| is in pixel coordinates.
- */
-static void
-flushimg(NSRect rect)
-{
-	NSRect dr, r;
-
-	if([win.content lockFocusIfCanDraw] == 0)
-		return;
-
-	if(win.needimg){
-		if(!NSEqualSizes(scalerect(rect, win.topointscale).size, [win.img size])){
-			LOG(@"flushimg reject %.0f %.0f",
-				rect.size.width, rect.size.height);
-			[win.content unlockFocus];
-			return;
-		}
-		win.needimg = 0;
-	}else
-		win.deferflush = 1;
-
-	LOG(@"flushimg ok %.0f %.0f", rect.size.width, rect.size.height);
-
-	/*
-	 * Unless we are inside "drawRect", we have to round
-	 * the corners ourselves, if this is the custom.
-	 * "NSCompositeSourceIn" can do that, but we don't
-	 * apply it to the whole rectangle, because this
-	 * slows down trackpad scrolling considerably in
-	 * Acme.
-	 */
-	r = [win.content bounds];
-	rect = dilate(scalerect(rect, win.topointscale));
-	r.size.height -= Cornersize;
-	dr = NSIntersectionRect(r, rect);
-	LOG(@"r %.0f %.0f %.0f %.0f", r.origin.x, r.origin.y, rect.size.width, rect.size.height);
-	LOG(@"rect in points %f %f %.0f %.0f", rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
-	LOG(@"dr in points %f %f %.0f %.0f", dr.origin.x, dr.origin.y, dr.size.width, dr.size.height);
-	drawimg(dr, NSCompositeCopy);
-
-	r.origin.y = r.size.height;
-	r.size = NSMakeSize(Cornersize, Cornersize);
-	dr = NSIntersectionRect(r, rect);
-	drawimg(dr, NSCompositeSourceIn);
-
-	r.origin.x = [win.img size].width - Cornersize;
-	dr = NSIntersectionRect(r, rect);
-	drawimg(dr, NSCompositeSourceIn);
-
-	r.size.width = r.origin.x - Cornersize;
-	r.origin.x -= r.size.width;
-	dr = NSIntersectionRect(r, rect);
-	drawimg(dr, NSCompositeCopy);
-
-	if(OSX_VERSION<100700 && win.isofs==0){
-		r.origin.x = [win.img size].width - Handlesize;
-		r.origin.y = [win.img size].height - Handlesize;
-		r.size = NSMakeSize(Handlesize, Handlesize);
-		if(NSIntersectsRect(r, rect))
-			drawresizehandle();
-	}
-	[win.content unlockFocus];
-}
-
-static void
-autoflushwin(int set)
-{
-	static NSTimer *t;
-
-	if(set){
-		if(t)
-			return;
-		/*
-		 * We need "NSRunLoopCommonModes", otherwise the
-		 * timer will not fire during live resizing.
-		 */
-		t = [NSTimer
-			timerWithTimeInterval:0.033
-			target:[appdelegate class]
-			selector:@selector(callflushwin:) userInfo:nil
-			repeats:YES];
-		[[NSRunLoop currentRunLoop] addTimer:t
-			forMode:NSRunLoopCommonModes];
-	}else{
-		[t invalidate];
-		t = nil;
-		win.deferflush = 0;
-	}
-}
-
-static void
-flushwin(void)
-{
-	if(win.deferflush && win.needimg==0){
-		[WIN flushWindow];
-		win.deferflush = 0;
-	}
-}
-
-/*
- * |dr| is sized in points. What if I make it pixels?
- */
-static void
-drawimg(NSRect dr, uint op)
-{
-	CGContextRef c;
-	CGImageRef i;
-	NSRect sr;
-
-	if(NSIsEmptyRect(dr))
-		return;
-
-	sr =  [win.content convertRect:dr fromView:nil];
-	LOG(@"before dr: %f %f %f %f\n", dr.origin.x, dr.origin.y, dr.size.width, dr.size.height);
-	LOG(@"before sr: %f %f %f %f\n", sr.origin.x, sr.origin.y, sr.size.width, sr.size.height);
-
-	dr = scalerect(dr, win.topixelscale);
-	sr = scalerect(sr, win.topixelscale);
-
-	LOG(@"dr: %f %f %f %f\n", dr.origin.x, dr.origin.y, dr.size.width, dr.size.height);
-	LOG(@"sr: %f %f %f %f\n", sr.origin.x, sr.origin.y, sr.size.width, sr.size.height);
-	if(OSX_VERSION >= 100800){
-		i = CGImageCreateWithImageInRect([win.img CGImage], NSRectToCGRect(dr));
-		c = [[WIN graphicsContext] graphicsPort];
-
-		CGContextSaveGState(c);
-		if(op == NSCompositeSourceIn)
-			CGContextSetBlendMode(c, kCGBlendModeSourceIn);
-                        LOG(@"wim.img size %f %f\n", [win.img size].width, [win.img size].height);
-		CGContextTranslateCTM(c, 0, [win.img size].height);
-		CGContextScaleCTM(c, win.topointscale, -win.topointscale);
-		CGContextDrawImage(c, NSRectToCGRect(sr), i);
-		CGContextRestoreGState(c);
-
-		CGImageRelease(i);
-	}else{
-		[win.img drawInRect:dr fromRect:sr
-			operation:op fraction:1
-			respectFlipped:YES hints:nil];
-	}
-//	NSFrameRect(dr);
-}
-
-static void
-drawresizehandle(void)
-{
-	NSColor *color[Barsize];
-	NSPoint a,b;
-	Point c;
-	int i,j;
-
-	c = Pt([win.img size].width, [win.img size].height);
-
-	[[WIN graphicsContext] setShouldAntialias:NO];
-
-	color[0] = [NSColor clearColor];
-	color[1] = [NSColor darkGrayColor];
-	color[2] = [NSColor lightGrayColor];
-	color[3] = [NSColor whiteColor];
-
-	for(i=1; i+Barsize <= Handlesize; )
-		for(j=0; j<Barsize; j++){
-			[color[j] setStroke];
-			i++;
-			a = NSMakePoint(c.x-i, c.y-1);
-			b = NSMakePoint(c.x-2, c.y+1-i);
-			[NSBezierPath strokeLineFromPoint:a toPoint:b];
-		}
-}
-
-static void getgesture(NSEvent*);
-static void getkeyboard(NSEvent*);
-static void getmouse(NSEvent*);
-static void gettouch(NSEvent*, int);
-static void updatecursor(void);
-
-@implementation contentview
-/*
- * "drawRect" is called each time Cocoa needs an
- * image, and each time we call "display".  It is
- * preceded by background painting, and followed by
- * "flushWindow".
- */
-- (void)drawRect:(NSRect)r
-{
-	static int first = 1;
-
-	LOG(@"drawrect %.0f %.0f %.0f %.0f",
-		r.origin.x, r.origin.y, r.size.width, r.size.height);
-
-	if(first)
-		first = 0;
-	else
-		resizeimg();
-
-	if([WIN inLiveResize])
-		waitimg(100);
-	else
-		waitimg(500);
-}
-- (BOOL)isFlipped
-{
-	return YES;	/* to make the content's origin top left */
-}
-- (BOOL)acceptsFirstResponder
-{
-	return YES;	/* else no keyboard */
-}
-- (id)initWithFrame:(NSRect)r
-{
-	[super initWithFrame:r];
-	[self setAcceptsTouchEvents:YES];
-	[self setHidden:YES];		/* to avoid early "drawRect" call */
-	return self;
-}
-- (void)setHidden:(BOOL)set
-{
-	if(!set)
-		[WIN makeFirstResponder:self];	/* for keyboard focus */
-	[super setHidden:set];
-}
-- (void)cursorUpdate:(NSEvent*)e{ updatecursor();}
-
-- (void)mouseMoved:(NSEvent*)e{ getmouse(e);}
-- (void)mouseDown:(NSEvent*)e{ getmouse(e);}
-- (void)mouseDragged:(NSEvent*)e{ getmouse(e);}
-- (void)mouseUp:(NSEvent*)e{ getmouse(e);}
-- (void)otherMouseDown:(NSEvent*)e{ getmouse(e);}
-- (void)otherMouseDragged:(NSEvent*)e{ getmouse(e);}
-- (void)otherMouseUp:(NSEvent*)e{ getmouse(e);}
-- (void)rightMouseDown:(NSEvent*)e{ getmouse(e);}
-- (void)rightMouseDragged:(NSEvent*)e{ getmouse(e);}
-- (void)rightMouseUp:(NSEvent*)e{ getmouse(e);}
-- (void)scrollWheel:(NSEvent*)e{ getmouse(e);}
-
-- (void)keyDown:(NSEvent*)e{ getkeyboard(e);}
-- (void)flagsChanged:(NSEvent*)e{ getkeyboard(e);}
-
-- (void)magnifyWithEvent:(NSEvent*)e{ getgesture(e);}
-
-- (void)touchesBeganWithEvent:(NSEvent*)e
-{
-	gettouch(e, NSTouchPhaseBegan);
-}
-- (void)touchesMovedWithEvent:(NSEvent*)e
-{
-	gettouch(e, NSTouchPhaseMoved);
-}
-- (void)touchesEndedWithEvent:(NSEvent*)e
-{
-	gettouch(e, NSTouchPhaseEnded);
-}
-- (void)touchesCancelledWithEvent:(NSEvent*)e
-{
-	gettouch(e, NSTouchPhaseCancelled);
-}
-@end
-
-static int keycvt[] =
-{
-	[QZ_IBOOK_ENTER]= '\n',
-	[QZ_RETURN]= '\n',
-	[QZ_ESCAPE]= 27,
-	[QZ_BACKSPACE]= '\b',
-	[QZ_LALT]= Kalt,
-	[QZ_LCTRL]= Kctl,
-	[QZ_LSHIFT]= Kshift,
-	[QZ_F1]= KF+1,
-	[QZ_F2]= KF+2,
-	[QZ_F3]= KF+3,
-	[QZ_F4]= KF+4,
-	[QZ_F5]= KF+5,
-	[QZ_F6]= KF+6,
-	[QZ_F7]= KF+7,
-	[QZ_F8]= KF+8,
-	[QZ_F9]= KF+9,
-	[QZ_F10]= KF+10,
-	[QZ_F11]= KF+11,
-	[QZ_F12]= KF+12,
-	[QZ_INSERT]= Kins,
-	[QZ_DELETE]= 0x7F,
-	[QZ_HOME]= Khome,
-	[QZ_END]= Kend,
-	[QZ_KP_PLUS]= '+',
-	[QZ_KP_MINUS]= '-',
-	[QZ_TAB]= '\t',
-	[QZ_PAGEUP]= Kpgup,
-	[QZ_PAGEDOWN]= Kpgdown,
-	[QZ_UP]= Kup,
-	[QZ_DOWN]= Kdown,
-	[QZ_LEFT]= Kleft,
-	[QZ_RIGHT]= Kright,
-	[QZ_KP_MULTIPLY]= '*',
-	[QZ_KP_DIVIDE]= '/',
-	[QZ_KP_ENTER]= '\n',
-	[QZ_KP_PERIOD]= '.',
-	[QZ_KP0]= '0',
-	[QZ_KP1]= '1',
-	[QZ_KP2]= '2',
-	[QZ_KP3]= '3',
-	[QZ_KP4]= '4',
-	[QZ_KP5]= '5',
-	[QZ_KP6]= '6',
-	[QZ_KP7]= '7',
-	[QZ_KP8]= '8',
-	[QZ_KP9]= '9',
-};
-
-@interface apptext : NSTextView @end
-
-@implementation apptext
-- (void)doCommandBySelector:(SEL)s{}	/* Esc key beeps otherwise */
-- (void)insertText:(id)arg{}	/* to avoid a latency after some time */
-@end
-
-static void
-interpretdeadkey(NSEvent *e)
-{
-	static apptext *t;
-
-	if(t == nil)
-		t = [apptext new];
-	[t interpretKeyEvents:[NSArray arrayWithObject:e]];
-}
-
-static void
-getkeyboard(NSEvent *e)
-{
-	static int omod;
-	NSString *s;
-	char c;
-	int k, m;
-	uint code;
-
-	m = [e modifierFlags];
-
-	switch([e type]){
-	case NSKeyDown:
-		s = [e characters];
-		c = [s UTF8String][0];
-
-		interpretdeadkey(e);
-
-		if(m & NSCommandKeyMask){
-			if((m & NSShiftKeyMask) && 'a' <= c && c <= 'z')
-				c += 'A' - 'a';
-			if(' '<=c && c<='~')
-				keystroke(Kcmd+c);
-			break;
-		}
-		k = c;
-		code = [e keyCode];
-		if(code<nelem(keycvt) && keycvt[code])
-			k = keycvt[code];
-		if(k==0)
-			break;
-		if(k>0)
-			keystroke(k);
-		else
-			keystroke([s characterAtIndex:0]);
-		break;
-
-	case NSFlagsChanged:
-		if(in.mbuttons || in.kbuttons){
-			in.kbuttons = 0;
-			if(m & NSControlKeyMask)
-				in.kbuttons |= 1;
-			if(m & NSAlternateKeyMask)
-				in.kbuttons |= 2;
-			if(m & NSCommandKeyMask)
-				in.kbuttons |= 4;
-			sendmouse();
-		}else
-		if(m&NSAlternateKeyMask && (omod&NSAlternateKeyMask)==0)
-			keystroke(Kalt);
-		break;
-
-	default:
-		panic("getkey: unexpected event type");
-	}
-	omod = m;
-}
-
-/*
- * Devdraw does not use NSTrackingArea, that often
- * forgets to update the cursor on entering and on
- * leaving the area, and that sometimes stops sending
- * us MouseMove events, at least on OS X Lion.
- */
-static void
-updatecursor(void)
-{
-	NSCursor *c;
-	int isdown, isinside;
-
-	isinside = NSPointInRect(in.mpos, [win.content bounds]);
-	isdown = (in.mbuttons || in.kbuttons);
-
-	if(win.cursor && (isinside || isdown))
-		c = win.cursor;
-	else if(isinside && usebigarrow)
-		c = in.bigarrow;
-	else
-		c = [NSCursor arrowCursor];
-	[c set];
-
-	/*
-	 * Without this trick, we can come back from the dock
-	 * with a resize cursor.
-	 */
-	if(OSX_VERSION >= 100700)
-		[NSCursor unhide];
-}
-
-static void
-acceptresizing(int set)
-{
-	uint old, style;
-
-	old = [WIN styleMask];
-
-	if((old | NSResizableWindowMask) != Winstyle)
-		return;	/* when entering new fullscreen */
-
-	if(set)
-		style = Winstyle;
-	else
-		style = Winstyle & ~NSResizableWindowMask;
-
-	if(style != old)
-		[WIN setStyleMask:style];
-}
-
-static void
-getmousepos(void)
-{
-	NSPoint p, q;
-
-	p = [WIN mouseLocationOutsideOfEventStream];
-	q = [win.content convertPoint:p fromView:nil];
-
-	/* q is in point coordinates. in.mpos is in pixels. */
-	q = scalepoint(q, win.topixelscale);
-
-	in.mpos.x = round(q.x);
-	in.mpos.y = round(q.y);
-
-	updatecursor();
-
-	if(win.isnfs || win.isofs)
-		hidebars(1);
-	else if(OSX_VERSION>=100700 && [WIN inLiveResize]==0){
-		if(p.x<12 && p.y<12 && p.x>2 && p.y>2)
-			acceptresizing(0);
-		else
-			acceptresizing(1);
-	}
-}
-
-static void
-getmouse(NSEvent *e)
-{
-	float d;
-	int b, m;
-
-	if([WIN isKeyWindow] == 0)
-		return;
-
-	getmousepos();
-
-	switch([e type]){
-	case NSLeftMouseDown:
-	case NSLeftMouseUp:
-	case NSOtherMouseDown:
-	case NSOtherMouseUp:
-	case NSRightMouseDown:
-	case NSRightMouseUp:
-		b = [NSEvent pressedMouseButtons];
-		b = b&~6 | (b&4)>>1 | (b&2)<<1;
-		b = mouseswap(b);
-
-		if(b == 1){
-			m = [e modifierFlags];
-			if(m & NSAlternateKeyMask){
-				abortcompose();
-				b = 2;
-			}else
-			if(m & NSCommandKeyMask)
-				b = 4;
-		}
-		in.mbuttons = b;
-		break;
-
-	case NSScrollWheel:
-#if OSX_VERSION >= 100700
-		d = [e scrollingDeltaY];
-#else
-		d = [e deltaY];
-#endif
-		if(d>0)
-			in.mscroll = 8;
-		else
-		if(d<0)
-			in.mscroll = 16;
-		break;
-
-	case NSMouseMoved:
-	case NSLeftMouseDragged:
-	case NSRightMouseDragged:
-	case NSOtherMouseDragged:
-		break;
-
-	default:
-		panic("getmouse: unexpected event type");
-	}
-	sendmouse();
-}
-
-#define Minpinch	0.02
-
-static void
-getgesture(NSEvent *e)
-{
-	switch([e type]){
-	case NSEventTypeMagnify:
-		if(fabs([e magnification]) > Minpinch)
-			togglefs();
-		break;
-	}
-}
-
-static void sendclick(int);
-
-static uint
-msec(void)
-{
-	return nsec()/1000000;
-}
-
-static void
-gettouch(NSEvent *e, int type)
-{
-	static int tapping;
-	static uint taptime;
-	NSSet *set;
-	int p;
-
-	switch(type){
-	case NSTouchPhaseBegan:
-		p = NSTouchPhaseTouching;
-		set = [e touchesMatchingPhase:p inView:nil];
-		if(set.count == 3){
-			tapping = 1;
-			taptime = msec();
-		}else
-		if(set.count > 3)
-			tapping = 0;
-		break;
-
-	case NSTouchPhaseMoved:
-		tapping = 0;
-		break;
-
-	case NSTouchPhaseEnded:
-		p = NSTouchPhaseTouching;
-		set = [e touchesMatchingPhase:p inView:nil];
-		if(set.count == 0){
-			if(tapping && msec()-taptime<400)
-				sendclick(2);
-			tapping = 0;
-		}
-		break;
-
-	case NSTouchPhaseCancelled:
-		break;
-
-	default:
-		panic("gettouch: unexpected event type");
-	}
-}
-
-static void
-sendclick(int b)
-{
-	in.mbuttons = b;
-	sendmouse();
-	in.mbuttons = 0;
-	sendmouse();
-}
-
-static void
-sendmouse(void)
-{
-	NSSize size;
-	int b;
-
-	size = winsizepixels();
-	mouserect = Rect(0, 0, size.width, size.height);
-
-	b = in.kbuttons | in.mbuttons | in.mscroll;
-	mousetrack(in.mpos.x, in.mpos.y, b, msec());
-	in.mscroll = 0;
-}
-
-/*
- * |p| is in pixels.
- */
-void
-setmouse(Point p)
-{
-	NSPoint q;
-	NSRect r;
-
-	if([NSApp isActive]==0 && in.willactivate==0)
-		return;
-
-	if([WIN inLiveResize])
-		return;
-
-	in.mpos = scalepoint(NSMakePoint(p.x, p.y), win.topointscale);	// race condition
-
-	q = [win.content convertPoint:in.mpos toView:nil];
-	q = [WIN convertRectToScreen:NSMakeRect(q.x, q.y, 0, 0)].origin;
-
-	r = [[[NSScreen screens] objectAtIndex:0] frame];
-	q.y = r.size.height - q.y;	/* Quartz is top-left-based here */
-
-	CGWarpMouseCursorPosition(NSPointToCGPoint(q));
-	CGAssociateMouseAndMouseCursorPosition(true);
-}
-
-/*
- *  |r| is in points.
- */
-static void
-followzoombutton(NSRect r)
-{
-	NSRect wr;
-	Point p;
-	NSPoint pt;
-
-	wr = [WIN frame];
-	wr.origin.y += wr.size.height;
-	r.origin.y += r.size.height;
-
-	getmousepos();
-	pt.x = in.mpos.x;
-	pt.y = in.mpos.y;
-	pt = scalepoint(pt, win.topointscale);
-	pt.x = (r.origin.x - wr.origin.x) + pt.x;
-	pt.y = -(r.origin.y - wr.origin.y) + pt.y;
-	pt = scalepoint(pt, win.topixelscale);
-
-	p.x = pt.x;
-	p.y = pt.y;
-
-	setmouse(p);
-}
-
-static void
-togglefs(void)
-{
-	uint opt, tmp;
-
-#if OSX_VERSION >= 100700
-	NSScreen *s, *s0;
-	
-	s = [WIN screen];
-	s0 = [[NSScreen screens] objectAtIndex:0];
-	
-	if((s==s0 && useoldfullscreen==0) || win.isnfs) {
-		[WIN toggleFullScreen:nil];
-		return;
-	}
-#endif
-	[win.content retain];
-	[WIN orderOut:nil];
-	[WIN setContentView:nil];
-
-	win.isofs = ! win.isofs;
-	hidebars(win.isofs);
-
-	/*
-	 * If we move the window from one space to another,
-	 * ofs[0] and ofs[1] can be on different spaces.
-	 * This "setCollectionBehavior" trick moves the
-	 * window to the active space.
-	 */
-	opt = [WIN collectionBehavior];
-	tmp = opt | NSWindowCollectionBehaviorCanJoinAllSpaces;
-	[WIN setContentView:win.content];
-	[WIN setCollectionBehavior:tmp];
-	[WIN makeKeyAndOrderFront:nil];
-	[WIN setCollectionBehavior:opt];
-	[win.content release];
-}
-
-enum
-{
-	Autohiddenbars = NSApplicationPresentationAutoHideDock
-		| NSApplicationPresentationAutoHideMenuBar,
-
-	Hiddenbars = NSApplicationPresentationHideDock
-		| NSApplicationPresentationHideMenuBar,
-};
-
-static void
-hidebars(int set)
-{
-	NSScreen *s,*s0;
-	uint old, opt;
-
-	s = [WIN screen];
-	s0 = [[NSScreen screens] objectAtIndex:0];
-	old = [NSApp presentationOptions];
-
-#if OSX_VERSION >= 100700
-	/* This bit can get lost, resulting in dreadful bugs. */
-	if(win.isnfs)
-		old |= NSApplicationPresentationFullScreen;
-#endif
-
-	if(set && s==s0)
-		opt = (old & ~Autohiddenbars) | Hiddenbars;
-	else
-		opt = old & ~(Autohiddenbars | Hiddenbars);
-
-	if(opt != old)
-		[NSApp setPresentationOptions:opt];
-}
-
-static void
-makemenu(void)
-{
-	NSMenu *m;
-	NSMenuItem *i0,*i1;
-
-	m = [NSMenu new];
-	i0 = [m addItemWithTitle:@"app" action:NULL keyEquivalent:@""];
-	i1 = [m addItemWithTitle:@"help" action:NULL keyEquivalent:@""];
-	[NSApp setMainMenu:m];
-	[m release];
-
-	m = [[NSMenu alloc] initWithTitle:@"app"];
-	[m addItemWithTitle:@"Full Screen"
-		action:@selector(calltogglefs:)
-		keyEquivalent:@"f"];
-	[m addItemWithTitle:@"Hide"
-		action:@selector(hide:)
-		keyEquivalent:@"h"];
-	[m addItemWithTitle:@"Quit"
-		action:@selector(terminate:)
-		keyEquivalent:@"q"];
-	[i0 setSubmenu:m];
-	[m release];
-
-	m = [[NSMenu alloc] initWithTitle:@"help"];
-	[m addItemWithTitle:@"Plumb devdraw(1)"
-		action:@selector(plumbmanual:)
-		keyEquivalent:@""];
-	[i1 setSubmenu:m];
-	[m release];
-}
-
-// FIXME: Introduce a high-resolution Glenda image.
-static void
-makeicon(void)
-{
-	NSData *d;
-	NSImage *i;
-
-	d = [[NSData alloc]
-		initWithBytes:glenda_png
-		length:(sizeof glenda_png)];
-
-	i = [[NSImage alloc] initWithData:d];
-	[NSApp setApplicationIconImage:i];
-	[[NSApp dockTile] display];
-	[i release];
-	[d release];
-}
-
-QLock snarfl;
-
-char*
-getsnarf(void)
-{
-	NSPasteboard *pb;
-	NSString *s;
-
-	pb = [NSPasteboard generalPasteboard];
-
-	qlock(&snarfl);
-	s = [pb stringForType:NSPasteboardTypeString];
-	qunlock(&snarfl);
-
-	if(s)
-		return strdup((char*)[s UTF8String]);		
-	else
-		return nil;
-}
-
-void
-putsnarf(char *s)
-{
-	NSArray *t;
-	NSPasteboard *pb;
-	NSString *str;
-
-	if(strlen(s) >= SnarfSize)
-		return;
-
-	t = [NSArray arrayWithObject:NSPasteboardTypeString];
-	pb = [NSPasteboard generalPasteboard];
-	str = [[NSString alloc] initWithUTF8String:s];
-
-	qlock(&snarfl);
-	[pb declareTypes:t owner:nil];
-	[pb setString:str forType:NSPasteboardTypeString];
-	qunlock(&snarfl);
-
-	[str release];
-}
-
-void
-kicklabel(char *label)
-{
-	if(label == nil)
-		return;
-
-	[appdelegate
-		performSelectorOnMainThread:@selector(callkicklabel0:)
-		withObject:[NSValue valueWithPointer:label]
-		waitUntilDone:YES];
-}
-
-static void
-kicklabel0(char *label) {
-	NSString *s;
-
-	s = [[NSString alloc] initWithUTF8String:label];
-	[win.ofs[0] setTitle:s];
-	[win.ofs[1] setTitle:s];
-	[[NSApp dockTile] setBadgeLabel:s];
-	[s release];
-}
-
-void
-setcursor(Cursor *c, Cursor2 *c2)
-{
-	USED(c2);
-
-	/*
-	 * No cursor change unless in main thread.
-	 */
-	[appdelegate
-		performSelectorOnMainThread:@selector(callsetcursor0:)
-		withObject:[NSValue valueWithPointer:c]
-		waitUntilDone:YES];
-}
-
-static void
-setcursor0(Cursor *c)
-{
-	NSCursor *d;
-
-	d = win.cursor;
-
-	if(c)
-		win.cursor = makecursor(c);
-	else
-		win.cursor = nil;
-
-	updatecursor();
-
-	if(d)
-		[d release];
-}
-
-/*
- * Cursors will be scaled on retina display.
- */
-static NSCursor*
-makecursor(Cursor *c)
-{
-	NSBitmapImageRep *r;
-	NSCursor *d;
-	NSImage *i;
-	NSPoint p;
-	int b;
-	uchar *plane[5];
-
-	r = [[NSBitmapImageRep alloc]
-		initWithBitmapDataPlanes:nil
-		pixelsWide:16
-		pixelsHigh:16
-		bitsPerSample:1
-		samplesPerPixel:2
-		hasAlpha:YES
-		isPlanar:YES
-		colorSpaceName:NSDeviceWhiteColorSpace
-		bytesPerRow:2
-		bitsPerPixel:1];
-
-	[r getBitmapDataPlanes:plane];
-
-	for(b=0; b<2*16; b++){
-		plane[0][b] = ~c->set[b];
-		plane[1][b] = c->clr[b];
-	}
-	p = NSMakePoint(-c->offset.x, -c->offset.y);
-	i = [NSImage new];
-	[i addRepresentation:r];
-	[r release];
-
-	d = [[NSCursor alloc] initWithImage:i hotSpot:p];
-	[i release];
-	return d;
-}
-
-void
-topwin(void)
-{
-	[WIN performSelectorOnMainThread:
-		@selector(makeKeyAndOrderFront:)
-		withObject:nil
-		waitUntilDone:NO];
-
-	in.willactivate = 1;
-	[NSApp activateIgnoringOtherApps:YES];
-}
-
-static NSSize
-winsizepoints()
-{
-    return [win.content bounds].size;
-}
-
-static NSSize
-winsizepixels()
-{
-#if OSX_VERSION >= 100700
-	if (OSX_VERSION >= 100700 && devdrawretina)
-		return [win.content convertSizeToBacking: winsizepoints()];
-	else
-#endif
-		return winsizepoints();
-}
-
-static NSRect
-scalerect(NSRect r, CGFloat scale)
-{
-	r.origin.x *= scale;
-	r.origin.y *= scale;
-	r.size.width *= scale;
-	 r.size.height *= scale;
-	 return r;
-}
-
-/*
- * Expands rectangle |r|'s bounds to more inclusive integer bounds to
- * eliminate 1 pixel gaps.
- */
-static NSRect
-dilate(NSRect r)
-{
-	if(win.topixelscale > 1.0f){
-		r.origin.x = floorf(r.origin.x);
-		r.origin.y = floorf(r.origin.y);
-		r.size.width = ceilf(r.size.width + 0.5);
-		r.size.height = ceilf(r.size.height + 0.5);
-	}
-	return r;
-}
-
-static NSPoint
-scalepoint(NSPoint pt, CGFloat scale)
-{
-    pt.x *= scale;
-    pt.y *= scale;
-    return pt;
-}
-
-static void
-setprocname(const char *s)
-{
-  CFStringRef process_name;
-  
-  process_name = CFStringCreateWithBytes(nil, (uchar*)s, strlen(s), kCFStringEncodingUTF8, false);
-
-  // Adapted from Chrome's mac_util.mm.
-  // http://src.chromium.org/viewvc/chrome/trunk/src/base/mac/mac_util.mm
-  //
-  // Copyright (c) 2012 The Chromium Authors. All rights reserved.
-  //
-  // Redistribution and use in source and binary forms, with or without
-  // modification, are permitted provided that the following conditions are
-  // met:
-  //
-  //    * Redistributions of source code must retain the above copyright
-  // notice, this list of conditions and the following disclaimer.
-  //    * Redistributions in binary form must reproduce the above
-  // copyright notice, this list of conditions and the following disclaimer
-  // in the documentation and/or other materials provided with the
-  // distribution.
-  //    * Neither the name of Google Inc. nor the names of its
-  // contributors may be used to endorse or promote products derived from
-  // this software without specific prior written permission.
-  //
-  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  // Warning: here be dragons! This is SPI reverse-engineered from WebKit's
-  // plugin host, and could break at any time (although realistically it's only
-  // likely to break in a new major release).
-  // When 10.7 is available, check that this still works, and update this
-  // comment for 10.8.
-
-  // Private CFType used in these LaunchServices calls.
-  typedef CFTypeRef PrivateLSASN;
-  typedef PrivateLSASN (*LSGetCurrentApplicationASNType)();
-  typedef OSStatus (*LSSetApplicationInformationItemType)(int, PrivateLSASN,
-                                                          CFStringRef,
-                                                          CFStringRef,
-                                                          CFDictionaryRef*);
-
-  static LSGetCurrentApplicationASNType ls_get_current_application_asn_func =
-      NULL;
-  static LSSetApplicationInformationItemType
-      ls_set_application_information_item_func = NULL;
-  static CFStringRef ls_display_name_key = NULL;
-
-  static bool did_symbol_lookup = false;
-  if (!did_symbol_lookup) {
-    did_symbol_lookup = true;
-    CFBundleRef launch_services_bundle =
-        CFBundleGetBundleWithIdentifier(CFSTR("com.apple.LaunchServices"));
-    if (!launch_services_bundle) {
-      fprint(2, "Failed to look up LaunchServices bundle\n");
-      return;
-    }
-
-    ls_get_current_application_asn_func =
-        (LSGetCurrentApplicationASNType)(
-            CFBundleGetFunctionPointerForName(
-                launch_services_bundle, CFSTR("_LSGetCurrentApplicationASN")));
-    if (!ls_get_current_application_asn_func)
-      fprint(2, "Could not find _LSGetCurrentApplicationASN\n");
-
-    ls_set_application_information_item_func =
-        (LSSetApplicationInformationItemType)(
-            CFBundleGetFunctionPointerForName(
-                launch_services_bundle,
-                CFSTR("_LSSetApplicationInformationItem")));
-    if (!ls_set_application_information_item_func)
-      fprint(2, "Could not find _LSSetApplicationInformationItem\n");
-
-    CFStringRef* key_pointer = (CFStringRef*)(
-        CFBundleGetDataPointerForName(launch_services_bundle,
-                                      CFSTR("_kLSDisplayNameKey")));
-    ls_display_name_key = key_pointer ? *key_pointer : NULL;
-    if (!ls_display_name_key)
-      fprint(2, "Could not find _kLSDisplayNameKey\n");
-
-    // Internally, this call relies on the Mach ports that are started up by the
-    // Carbon Process Manager.  In debug builds this usually happens due to how
-    // the logging layers are started up; but in release, it isn't started in as
-    // much of a defined order.  So if the symbols had to be loaded, go ahead
-    // and force a call to make sure the manager has been initialized and hence
-    // the ports are opened.
-    ProcessSerialNumber psn;
-    GetCurrentProcess(&psn);
-  }
-  if (!ls_get_current_application_asn_func ||
-      !ls_set_application_information_item_func ||
-      !ls_display_name_key) {
-    return;
-  }
-
-  PrivateLSASN asn = ls_get_current_application_asn_func();
-  // Constant used by WebKit; what exactly it means is unknown.
-  const int magic_session_constant = -2;
-  OSErr err =
-      ls_set_application_information_item_func(magic_session_constant, asn,
-                                               ls_display_name_key,
-                                               process_name,
-                                               NULL /* optional out param */);
-  if(err != noErr)
-    fprint(2, "Call to set process name failed\n");
-}
-
-void
-resizewindow(Rectangle r)
-{
-	USED(r);
-}
diff --git a/src/cmd/devdraw/macargv.m b/src/cmd/devdraw/macargv.m
index 8db56be7..92df2a6f 100644
--- a/src/cmd/devdraw/macargv.m
+++ b/src/cmd/devdraw/macargv.m
@@ -12,9 +12,6 @@ AUTOFRAMEWORK(Cocoa)
 void
 main(void)
 {
-	if(OSX_VERSION < 100700)
-		[NSAutoreleasePool new];
-
 	[NSApplication sharedApplication];
 	NSObject<NSApplicationDelegate> *delegate = [appdelegate new];
 	[NSApp setDelegate:delegate];
diff --git a/src/cmd/devdraw/mkwsysrules.sh b/src/cmd/devdraw/mkwsysrules.sh
index e94afbd3..a1dc56d3 100644
--- a/src/cmd/devdraw/mkwsysrules.sh
+++ b/src/cmd/devdraw/mkwsysrules.sh
@@ -22,13 +22,11 @@ fi
 
 if [ "x$WSYSTYPE" = "x" ]; then
 	if [ "x`uname`" = "xDarwin" ]; then
-		if sw_vers | grep 'ProductVersion:	10\.[0-5]\.' >/dev/null; then
-			echo 1>&2 'OS X 10.5 and older are not supported'
+		if sw_vers | egrep 'ProductVersion:	(10\.[0-9]\.|10\.1[012])$' >/dev/null; then
+			echo 1>&2 'OS X 10.12 and older are not supported'
 			exit 1
-		else
-			#echo 1>&2 'WARNING: OS X Lion is not working.  Copy binaries from a Snow Leopard system.'
-			WSYSTYPE=osx-cocoa
 		fi
+		WSYSTYPE=osx-cocoa
 	elif [ -d "$X11" ]; then
 		WSYSTYPE=x11
 	else
@@ -54,12 +52,8 @@ if [ $WSYSTYPE = x11 ]; then
 	XO=`ls x11-*.c 2>/dev/null | sed 's/\.c$/.o/'`
 	echo 'WSYSOFILES=$WSYSOFILES '$XO
 elif [ $WSYSTYPE = osx-cocoa ]; then
-	if sw_vers|awk '/ProductVersion/{split($2,a,".");exit(a[2]<14)}' >/dev/null; then	# 0 is true in sh.
-		echo 'OBJCFLAGS=$OBJCFLAGS -fobjc-arc'
-		echo 'WSYSOFILES=$WSYSOFILES osx-draw.o cocoa-screen-metal-objc.o cocoa-srv.o cocoa-thread.o'
-	else
-		echo 'WSYSOFILES=$WSYSOFILES osx-draw.o cocoa-screen-objc.o cocoa-srv.o cocoa-thread.o'
-	fi
+	echo 'OBJCFLAGS=$OBJCFLAGS -fobjc-arc'
+	echo 'WSYSOFILES=$WSYSOFILES osx-draw.o cocoa-screen-metal-objc.o cocoa-srv.o cocoa-thread.o'
 	echo 'MACARGV=macargv-objc.o'
 elif [ $WSYSTYPE = nowsys ]; then
 	echo 'WSYSOFILES=nowsys.o'