summaryrefslogtreecommitdiffstats
path: root/macosx/tkMacOSXNotify.c
blob: 6a4e6c103934c4f47667a9f2fa65d75c7d2f8a15 (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
/*
 * tkMacOSXNotify.c --
 *
 *	This file contains the implementation of a tcl event source
 *	for the AppKit event loop.
 *
 * Copyright (c) 1995-1997 Sun Microsystems, Inc.
 * Copyright 2001-2009, Apple Inc.
 * Copyright (c) 2005-2009 Daniel A. Steffen <das@users.sourceforge.net>
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tkMacOSXPrivate.h"
#include "tkMacOSXEvent.h"
#include <tclInt.h>
#include <pthread.h>
#import <objc/objc-auto.h>

/* This is not used for anything at the moment. */
typedef struct ThreadSpecificData {
    int initialized;
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;

#define TSD_INIT() ThreadSpecificData *tsdPtr = Tcl_GetThreadData(&dataKey, \
	    sizeof(ThreadSpecificData))

static void TkMacOSXNotifyExitHandler(ClientData clientData);
static void TkMacOSXEventsSetupProc(ClientData clientData, int flags);
static void TkMacOSXEventsCheckProc(ClientData clientData, int flags);

#pragma mark TKApplication(TKNotify)

@interface NSApplication(TKNotify)
/* We need to declare this hidden method. */
- (void)_modalSession:(NSModalSession)session sendEvent:(NSEvent *)event;
@end

@implementation NSWindow(TKNotify)
- (id)tkDisplayIfNeeded {
    if (![self isAutodisplay]) {
	[self displayIfNeeded];
    }
    return nil;
}
@end

@implementation TKApplication(TKNotify)
/* Redisplay all of our windows, then call super. */
- (NSEvent *)nextEventMatchingMask:(NSUInteger)mask
	untilDate:(NSDate *)expiration inMode:(NSString *)mode
	dequeue:(BOOL)deqFlag {
    NSAutoreleasePool *pool = [NSAutoreleasePool new];
    [NSApp makeWindowsPerform:@selector(tkDisplayIfNeeded) inOrder:NO];
    [pool drain];
    NSEvent *event = [super nextEventMatchingMask:mask
					untilDate:expiration
					   inMode:mode
					  dequeue:deqFlag];
    return event;
}

 /*
 * Call super then check the pasteboard.
  */
- (void)sendEvent:(NSEvent *)theEvent {
    NSAutoreleasePool *pool = [NSAutoreleasePool new];
    [super sendEvent:theEvent];
    [NSApp tkCheckPasteboard];
    [pool drain];
}
@end

#pragma mark -

/*
 *----------------------------------------------------------------------
 *
 * GetRunLoopMode --
 *
 * Results:
 *	RunLoop mode that should be passed to -nextEventMatchingMask:
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static NSString *
GetRunLoopMode(NSModalSession modalSession)
{
    NSString *runLoopMode = nil;

    if (modalSession) {
	runLoopMode = NSModalPanelRunLoopMode;
    } else if (TkMacOSXGetCapture()) {
	runLoopMode = NSEventTrackingRunLoopMode;
    }
    if (!runLoopMode) {
	runLoopMode = [[NSRunLoop currentRunLoop] currentMode];
    }
    if (!runLoopMode) {
	runLoopMode = NSDefaultRunLoopMode;
    }
    return runLoopMode;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_MacOSXSetupTkNotifier --
 *
 *	This procedure is called during Tk initialization to create
 *	the event source for TkAqua events.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	A new event source is created.
 *
 *----------------------------------------------------------------------
 */

void
Tk_MacOSXSetupTkNotifier(void)
{
    TSD_INIT();
    if (!tsdPtr->initialized) {
	tsdPtr->initialized = 1;

	/*
	 * Install TkAqua event source in main event loop thread.
	 */

	if (CFRunLoopGetMain() == CFRunLoopGetCurrent()) {
	    if (!pthread_main_np()) {
		/*
		 * Panic if main runloop is not on the main application thread.
		 */

		Tcl_Panic("Tk_MacOSXSetupTkNotifier: %s",
		    "first [load] of TkAqua has to occur in the main thread!");
	    }
	    Tcl_CreateEventSource(TkMacOSXEventsSetupProc,
				  TkMacOSXEventsCheckProc,
				  GetMainEventQueue());
	    TkCreateExitHandler(TkMacOSXNotifyExitHandler, NULL);
	    Tcl_SetServiceMode(TCL_SERVICE_ALL);
	    TclMacOSXNotifierAddRunLoopMode(NSEventTrackingRunLoopMode);
	    TclMacOSXNotifierAddRunLoopMode(NSModalPanelRunLoopMode);
	}
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXNotifyExitHandler --
 *
 *	This function is called during finalization to clean up the
 *	TkMacOSXNotify module.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static void
TkMacOSXNotifyExitHandler(
    ClientData clientData)	/* Not used. */
{
    TSD_INIT();
    Tcl_DeleteEventSource(TkMacOSXEventsSetupProc,
			  TkMacOSXEventsCheckProc,
			  GetMainEventQueue());
    tsdPtr->initialized = 0;
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXEventsSetupProc --
 *
 *	This procedure implements the setup part of the MacOSX event
 *	source. It is invoked by Tcl_DoOneEvent before calling 
 *      TkMacOSXEventsProc to process all queued NSEvents.  In our
 *      case, all we need to do is to set the Tcl MaxBlockTime to
 *      0 before starting the loop to process all queued NSEvents.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *      
 *	If NSEvents are queued, then the maximum block time will be set
 *	to 0 to ensure that control returns immediately to Tcl.
 *
 *----------------------------------------------------------------------
 */

static void
TkMacOSXEventsSetupProc(
    ClientData clientData,
    int flags)
{
    if (flags & TCL_WINDOW_EVENTS &&
	![[NSRunLoop currentRunLoop] currentMode]) {
	static Tcl_Time zeroBlockTime = { 0, 0 };
 	/* Call this with dequeue=NO -- just checking if the queue is empty. */ 
	NSEvent *currentEvent = [NSApp nextEventMatchingMask:NSAnyEventMask
 						   untilDate:[NSDate distantPast]
 						      inMode:GetRunLoopMode(TkMacOSXGetModalSession())
 						     dequeue:NO];
	if (currentEvent) {
	    Tcl_SetMaxBlockTime(&zeroBlockTime);
	}
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXEventsCheckProc --
 *
 *	This procedure loops through all NSEvents waiting in the
 *      TKApplication event queue, generating X events from them.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	NSevents are used to generate X events, which are added to the
 *      Tcl event queue.
 *
 *----------------------------------------------------------------------
 */
static void
TkMacOSXEventsCheckProc(
    ClientData clientData,
    int flags)
{
    if (flags & TCL_WINDOW_EVENTS &&
	    ![[NSRunLoop currentRunLoop] currentMode]) {
	NSEvent *currentEvent = nil;
	NSModalSession modalSession;

	do {
	    modalSession = TkMacOSXGetModalSession();
	    currentEvent = [NSApp nextEventMatchingMask:NSAnyEventMask
					      untilDate:[NSDate distantPast]
						 inMode:GetRunLoopMode(modalSession)
						dequeue:YES];
	    if (!currentEvent) {
		break; /* No more events. */
	    }
	    NSAutoreleasePool *pool = [NSAutoreleasePool new];
	    /* Generate Xevents. */
	    int oldServiceMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
	    NSEvent *processedEvent = [NSApp tkProcessEvent:currentEvent];
	    Tcl_SetServiceMode(oldServiceMode);
	    if (processedEvent) { /* Should always be non-NULL. */
#ifdef TK_MAC_DEBUG_EVENTS
		TKLog(@"   event: %@", currentEvent);
#endif
		if (modalSession) {
		    [NSApp _modalSession:modalSession sendEvent:currentEvent];
		} else {
		    [NSApp sendEvent:currentEvent];
		}
	    }
	    [pool drain];
	} while (1);
    }
}


/*
 * Local Variables:
 * mode: objc
 * c-basic-offset: 4
 * fill-column: 79
 * coding: utf-8
 * End:
 */