aboutsummaryrefslogtreecommitdiff
path: root/pugl/pugl_osx.m
blob: e8ecc98e8ba2c262c7622fabf48cdf5f07ddc660 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
/*
  Copyright 2012-2016 David Robillard <http://drobilla.net>

  Permission to use, copy, modify, and/or distribute this software for any
  purpose with or without fee is hereby granted, provided that the above
  copyright notice and this permission notice appear in all copies.

  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

/**
   @file pugl_osx.m OSX/Cocoa Pugl Implementation.
*/

#include <stdlib.h>

#import <Cocoa/Cocoa.h>

#include "pugl/cairo_gl.h"
#include "pugl/gl.h"
#include "pugl/pugl_internal.h"

@class PuglOpenGLView;

struct PuglInternalsImpl {
	NSApplication*   app;
	PuglOpenGLView*  glview;
	id               window;
	NSEvent*         nextEvent;
#ifdef PUGL_HAVE_CAIRO
	cairo_surface_t* surface;
	cairo_t*         cr;
	PuglCairoGL      cairo_gl;
#endif
};

@interface PuglWindow : NSWindow
{
@public
	PuglView* puglview;
}

- (id) initWithContentRect:(NSRect)contentRect
                 styleMask:(unsigned int)aStyle
                   backing:(NSBackingStoreType)bufferingType
                     defer:(BOOL)flag;
- (void) setPuglview:(PuglView*)view;
- (BOOL) windowShouldClose:(id)sender;
- (BOOL) canBecomeKeyWindow:(id)sender;
@end

@implementation PuglWindow

- (id)initWithContentRect:(NSRect)contentRect
                styleMask:(unsigned int)aStyle
                  backing:(NSBackingStoreType)bufferingType
                    defer:(BOOL)flag
{
	if (![super initWithContentRect:contentRect
	                      styleMask:(NSClosableWindowMask |
	                                 NSTitledWindowMask |
	                                 NSResizableWindowMask)
	                        backing:NSBackingStoreBuffered defer:NO]) {
		return nil;
	}

	[self setAcceptsMouseMovedEvents:YES];
	return (PuglWindow*)self;
}

- (void)setPuglview:(PuglView*)view
{
	puglview = view;
	[self setContentSize:NSMakeSize(view->width, view->height)];
}

- (BOOL)windowShouldClose:(id)sender
{
	const PuglEventClose ev = {
		PUGL_CLOSE,
		puglview,
		0
	};
	puglDispatchEvent(puglview, (PuglEvent*)&ev);

	return YES;
}

- (BOOL) canBecomeKeyWindow
{
	return YES;
}

- (BOOL) canBecomeMainWindow
{
	return YES;
}

- (BOOL) canBecomeKeyWindow:(id)sender
{
	return NO;
}

@end

@interface PuglOpenGLView : NSOpenGLView
{
@public
	PuglView* puglview;

	NSTrackingArea* trackingArea;
}

- (id) initWithFrame:(NSRect)frame;
- (void) reshape;
- (void) drawRect:(NSRect)rect;
- (NSPoint) eventLocation:(NSEvent*)event;
- (void) mouseEntered:(NSEvent*)event;
- (void) mouseExited:(NSEvent*)event;
- (void) mouseMoved:(NSEvent*)event;
- (void) mouseDragged:(NSEvent*)event;
- (void) rightMouseDragged:(NSEvent*)event;
- (void) mouseDown:(NSEvent*)event;
- (void) mouseUp:(NSEvent*)event;
- (void) rightMouseDragged:(NSEvent*)event;
- (void) rightMouseDown:(NSEvent*)event;
- (void) rightMouseUp:(NSEvent*)event;
- (void) scrollWheel:(NSEvent*)event;
- (void) keyDown:(NSEvent*)event;
- (void) keyUp:(NSEvent*)event;
- (void) flagsChanged:(NSEvent*)event;

@end

@implementation PuglOpenGLView

- (id) initWithFrame:(NSRect)frame
{
	NSOpenGLPixelFormatAttribute pixelAttribs[16] = {
		NSOpenGLPFADoubleBuffer,
		NSOpenGLPFAAccelerated,
		NSOpenGLPFAColorSize, 32,
		NSOpenGLPFADepthSize, 32,
		0
	};

	NSOpenGLPixelFormat* pixelFormat = [
		[NSOpenGLPixelFormat alloc] initWithAttributes:pixelAttribs];

	if (pixelFormat) {
		self = [super initWithFrame:frame pixelFormat:pixelFormat];
		[pixelFormat release];
	} else {
		self = [super initWithFrame:frame];
	}

	if (self) {
		[[self openGLContext] makeCurrentContext];
		[self reshape];
	}
	return self;
}

- (void) reshape
{
	[[self openGLContext] update];

	if (!puglview) {
		return;
	}

	const NSRect             bounds = [self bounds];
	const PuglEventConfigure ev     =  {
		PUGL_CONFIGURE,
		puglview,
		0,
		bounds.origin.x,
		bounds.origin.y,
		bounds.size.width,
		bounds.size.height,
	};

#ifdef PUGL_HAVE_CAIRO
	PuglInternals* impl = puglview->impl;
	if (puglview->ctx_type & PUGL_CAIRO) {
		cairo_surface_destroy(impl->surface);
		cairo_destroy(impl->cr);
		impl->surface = pugl_cairo_gl_create(
			&impl->cairo_gl, ev.width, ev.height, 4);
		impl->cr = cairo_create(impl->surface);
		pugl_cairo_gl_configure(&impl->cairo_gl, ev.width, ev.height);
	}
#endif

	puglDispatchEvent(puglview, (PuglEvent*)&ev);
}

- (void) drawRect:(NSRect)rect
{
	const PuglEventExpose ev =  {
		PUGL_EXPOSE,
		puglview,
		0,
		rect.origin.x,
		rect.origin.y,
		rect.size.width,
		rect.size.height,
		0
	};

	puglDispatchEvent(puglview, (const PuglEvent*)&ev);

#ifdef PUGL_HAVE_CAIRO
	if (puglview->ctx_type & PUGL_CAIRO) {
		pugl_cairo_gl_draw(
			&puglview->impl->cairo_gl, puglview->width, puglview->height);
	}
#endif
}

- (BOOL) acceptsFirstResponder
{
	return YES;
}

static unsigned
getModifiers(PuglView* view, NSEvent* ev)
{
	const unsigned modifierFlags = [ev modifierFlags];

	unsigned mods = 0;
	mods |= (modifierFlags & NSShiftKeyMask)     ? PUGL_MOD_SHIFT : 0;
	mods |= (modifierFlags & NSControlKeyMask)   ? PUGL_MOD_CTRL  : 0;
	mods |= (modifierFlags & NSAlternateKeyMask) ? PUGL_MOD_ALT   : 0;
	mods |= (modifierFlags & NSCommandKeyMask)   ? PUGL_MOD_SUPER : 0;
	return mods;
}

-(void)updateTrackingAreas
{
	if (trackingArea != nil) {
		[self removeTrackingArea:trackingArea];
		[trackingArea release];
	}

	const int opts = (NSTrackingMouseEnteredAndExited |
	                  NSTrackingMouseMoved |
	                  NSTrackingActiveAlways);
	trackingArea = [ [NSTrackingArea alloc] initWithRect:[self bounds]
	                                             options:opts
	                                               owner:self
	                                            userInfo:nil];
	[self addTrackingArea:trackingArea];
}

- (NSPoint) eventLocation:(NSEvent*)event
{
	return [self convertPoint:[event locationInWindow] fromView:nil];
}

- (void)mouseEntered:(NSEvent*)theEvent
{
	[self updateTrackingAreas];
}

- (void)mouseExited:(NSEvent*)theEvent
{
}

- (void) mouseMoved:(NSEvent*)event
{
	const NSPoint         wloc = [self eventLocation:event];
	const NSPoint         rloc = [NSEvent mouseLocation];
	const PuglEventMotion ev   =  {
		PUGL_MOTION_NOTIFY,
		puglview,
		0,
		[event timestamp],
		wloc.x,
		puglview->height - wloc.y,
		rloc.x,
		[[NSScreen mainScreen] frame].size.height - rloc.y,
		getModifiers(puglview, event),
		0,
		1
	};
	puglDispatchEvent(puglview, (PuglEvent*)&ev);
}

- (void) mouseDragged:(NSEvent*)event
{
	[self mouseMoved: event];
}

- (void) rightMouseDragged:(NSEvent*)event
{
	[self mouseMoved: event];
}

- (void) mouseDown:(NSEvent*)event
{
	const NSPoint         wloc = [self eventLocation:event];
	const NSPoint         rloc = [NSEvent mouseLocation];
	const PuglEventButton ev   =  {
		PUGL_BUTTON_PRESS,
		puglview,
		0,
		[event timestamp],
		wloc.x,
		puglview->height - wloc.y,
		rloc.x,
		[[NSScreen mainScreen] frame].size.height - rloc.y,
		getModifiers(puglview, event),
		[event buttonNumber]
	};
	puglDispatchEvent(puglview, (PuglEvent*)&ev);
}

- (void) mouseUp:(NSEvent*)event
{
	const NSPoint         wloc = [self eventLocation:event];
	const NSPoint         rloc = [NSEvent mouseLocation];
	const PuglEventButton ev   =  {
		PUGL_BUTTON_RELEASE,
		puglview,
		0,
		[event timestamp],
		wloc.x,
		puglview->height - wloc.y,
		rloc.x,
		[[NSScreen mainScreen] frame].size.height - rloc.y,
		getModifiers(puglview, event),
		[event buttonNumber]
	};
	puglDispatchEvent(puglview, (PuglEvent*)&ev);
	[self updateTrackingAreas];
}

- (void) rightMouseDown:(NSEvent*)event
{
	[self mouseDown: event];
}

- (void) rightMouseUp:(NSEvent*)event
{
	[self mouseUp: event];
}

- (void) scrollWheel:(NSEvent*)event
{
	[self updateTrackingAreas];

	const NSPoint         wloc = [self eventLocation:event];
	const NSPoint         rloc = [NSEvent mouseLocation];
	const PuglEventScroll ev   =  {
		PUGL_SCROLL,
		puglview,
		0,
		[event timestamp],
		wloc.x,
		puglview->height - wloc.y,
		rloc.x,
		[[NSScreen mainScreen] frame].size.height - rloc.y,
		getModifiers(puglview, event),
		[event deltaX],
		[event deltaY]
	};
	puglDispatchEvent(puglview, (PuglEvent*)&ev);
	[self updateTrackingAreas];
}

- (void) keyDown:(NSEvent*)event
{
	if (puglview->ignoreKeyRepeat && [event isARepeat]) {
		return;
	}

	const NSPoint      wloc  = [self eventLocation:event];
	const NSPoint      rloc  = [NSEvent mouseLocation];
	const NSString*    chars = [event characters];
	const char*        str   = [chars UTF8String];
	PuglEventKey       ev    =  {
		PUGL_KEY_PRESS,
		puglview,
		0,
		[event timestamp],
		wloc.x,
		puglview->height - wloc.y,
		rloc.x,
		[[NSScreen mainScreen] frame].size.height - rloc.y,
		getModifiers(puglview, event),
		[event keyCode],
		puglDecodeUTF8((const uint8_t*)str),
		0,  // TODO: Special keys?
		{ 0, 0, 0, 0, 0, 0, 0, 0 },
		false
	};
	strncpy((char*)ev.utf8, str, 8);
	puglDispatchEvent(puglview, (PuglEvent*)&ev);
}

- (void) keyUp:(NSEvent*)event
{
	const NSPoint      wloc  = [self eventLocation:event];
	const NSPoint      rloc  = [NSEvent mouseLocation];
	const NSString*    chars = [event characters];
	const char*        str   = [chars UTF8String];
	const PuglEventKey ev    =  {
		PUGL_KEY_RELEASE,
		puglview,
		0,
		[event timestamp],
		wloc.x,
		puglview->height - wloc.y,
		rloc.x,
		[[NSScreen mainScreen] frame].size.height - rloc.y,
		getModifiers(puglview, event),
		[event keyCode],
		puglDecodeUTF8((const uint8_t*)str),
		0,  // TODO: Special keys?
		{ 0, 0, 0, 0, 0, 0, 0, 0 },
		false,
	};
	strncpy((char*)ev.utf8, str, 8);
	puglDispatchEvent(puglview, (PuglEvent*)&ev);
}

- (void) flagsChanged:(NSEvent*)event
{
	// TODO: Is this a sensible way to handle special keys?
	/*
		const unsigned mods = getModifiers(puglview, event);
		if ((mods & PUGL_MOD_SHIFT) != (puglview->mods & PUGL_MOD_SHIFT)) {
			puglview->specialFunc(puglview, mods & PUGL_MOD_SHIFT, PUGL_KEY_SHIFT);
		} else if ((mods & PUGL_MOD_CTRL) != (puglview->mods & PUGL_MOD_CTRL)) {
			puglview->specialFunc(puglview, mods & PUGL_MOD_CTRL, PUGL_KEY_CTRL);
		} else if ((mods & PUGL_MOD_ALT) != (puglview->mods & PUGL_MOD_ALT)) {
			puglview->specialFunc(puglview, mods & PUGL_MOD_ALT, PUGL_KEY_ALT);
		} else if ((mods & PUGL_MOD_SUPER) != (puglview->mods & PUGL_MOD_SUPER)) {
			puglview->specialFunc(puglview, mods & PUGL_MOD_SUPER, PUGL_KEY_SUPER);
		}
		puglview->mods = mods;
	}
	*/
}

@end

PuglInternals*
puglInitInternals(void)
{
	return (PuglInternals*)calloc(1, sizeof(PuglInternals));
}

void
puglEnterContext(PuglView* view)
{
	[[view->impl->glview openGLContext] makeCurrentContext];
#ifdef PUGL_HAVE_CAIRO
	if (view->ctx_type & PUGL_CAIRO) {
		cairo_set_source_rgb(view->impl->cr, 0, 0, 0);
		cairo_paint(view->impl->cr);
	}
#endif
}

void
puglLeaveContext(PuglView* view, bool flush)
{
#ifdef PUGL_HAVE_CAIRO
	if (view->ctx_type & PUGL_CAIRO) {
		pugl_cairo_gl_draw(&view->impl->cairo_gl, view->width, view->height);
	}
#endif

	if (flush) {
		[[view->impl->glview openGLContext] flushBuffer];
	}
}

int
puglCreateWindow(PuglView* view, const char* title)
{
	PuglInternals* impl = view->impl;

	[NSAutoreleasePool new];
	impl->app = [NSApplication sharedApplication];

	impl->glview           = [PuglOpenGLView new];
	impl->glview->puglview = view;

	if (view->transient_parent) {
		NSView* pview = (NSView*)view->transient_parent;
		[pview addSubview:impl->glview];
		[impl->glview setHidden:NO];
	} else {
		NSString* titleString = [[NSString alloc]
			                        initWithBytes:title
			                               length:strlen(title)
			                             encoding:NSUTF8StringEncoding];

		id window = [[PuglWindow new] retain];
		[window setPuglview:view];
		[window setTitle:titleString];
		if (view->min_width || view->min_height) {
			[window setContentMinSize:NSMakeSize(view->min_width,
			                                     view->min_height)];
		}
		impl->window = window;

		[window setContentView:impl->glview];
		[impl->app activateIgnoringOtherApps:YES];
		[window makeFirstResponder:impl->glview];
		[window makeKeyAndOrderFront:window];
#if 0
		if (resizable) {
			[impl->glview setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable];
		}
#endif
	}

	return 0;
}

void
puglShowWindow(PuglView* view)
{
	[view->impl->window setIsVisible:YES];
	view->visible = true;
}

void
puglHideWindow(PuglView* view)
{
	[view->impl->window setIsVisible:NO];
	view->visible = false;
}

void
puglDestroy(PuglView* view)
{
#ifdef PUGL_HAVE_CAIRO
	pugl_cairo_gl_free(&view->impl->cairo_gl);
#endif
	view->impl->glview->puglview = NULL;
	[view->impl->glview removeFromSuperview];
	if (view->impl->window) {
		[view->impl->window close];
	}
	[view->impl->glview release];
	if (view->impl->window) {
		[view->impl->window release];
	}
	free(view->windowClass);
	free(view->impl);
	free(view);
}

void
puglGrabFocus(PuglView* view)
{
	// TODO
}

PuglStatus
puglWaitForEvent(PuglView* view)
{
	/* OSX supposedly has queue: and untilDate: selectors that can be used for
	   a blocking non-queueing event check, but if used here cause an
	   unsupported selector error at runtime.  I have no idea why, so just get
	   the event and keep it around until the call to puglProcessEvents. */
	if (!view->impl->nextEvent) {
		view->impl->nextEvent = [view->impl->window
		                            nextEventMatchingMask: NSAnyEventMask];
	}

	return PUGL_SUCCESS;
}

PuglStatus
puglProcessEvents(PuglView* view)
{
	while (true) {
		// Get the next event, or use the cached one from puglWaitForEvent
		if (!view->impl->nextEvent) {
			view->impl->nextEvent = [view->impl->window
			                            nextEventMatchingMask: NSAnyEventMask];
		}

		if (!view->impl->nextEvent) {
			break;  // No events to process, done
		}

		// Dispatch event
		[view->impl->app sendEvent: view->impl->nextEvent];
		view->impl->nextEvent = NULL;
	}

	return PUGL_SUCCESS;
}

void
puglPostRedisplay(PuglView* view)
{
	//view->redisplay = true; // unused
	[view->impl->glview setNeedsDisplay: YES];
}

PuglNativeWindow
puglGetNativeWindow(PuglView* view)
{
	return (PuglNativeWindow)view->impl->glview;
}

void*
puglGetContext(PuglView* view)
{
#ifdef PUGL_HAVE_CAIRO
	if (view->ctx_type & PUGL_CAIRO) {
		return view->impl->cr;
	}
#endif
	return NULL;
}