]> git.saurik.com Git - wxWidgets.git/blame_incremental - src/cocoa/evtloop.mm
[ 1509599 ] 'Split pickers page in widgets sample' with more icons and rebaking.
[wxWidgets.git] / src / cocoa / evtloop.mm
... / ...
CommitLineData
1///////////////////////////////////////////////////////////////////////////////
2// Name: cocoa/evtloop.mm
3// Purpose: implements wxEventLoop for Cocoa
4// Author: David Elliott
5// Modified by:
6// Created: 2003/10/02
7// RCS-ID: $Id$
8// Copyright: (c) 2003 David Elliott <dfe@cox.net>
9// License: wxWidgets licence
10///////////////////////////////////////////////////////////////////////////////
11
12#include "wx/wxprec.h"
13#ifndef WX_PRECOMP
14 #include "wx/log.h"
15 #include "wx/app.h"
16#endif //WX_PRECOMP
17
18#include "wx/evtloop.h"
19
20#import <AppKit/NSApplication.h>
21#import <AppKit/NSEvent.h>
22#import <Foundation/NSRunLoop.h>
23
24// ========================================================================
25// wxEventLoopImpl
26// ========================================================================
27
28class WXDLLEXPORT wxEventLoopImpl
29{
30public:
31 // ctor
32 wxEventLoopImpl() { SetExitCode(0); }
33
34 // set/get the exit code
35 void SetExitCode(int exitcode) { m_exitcode = exitcode; }
36 int GetExitCode() const { return m_exitcode; }
37
38private:
39 // the exit code of the event loop
40 int m_exitcode;
41};
42
43// ========================================================================
44// wxEventLoop
45// ========================================================================
46
47// ----------------------------------------------------------------------------
48// wxEventLoop running and exiting
49// ----------------------------------------------------------------------------
50
51wxEventLoop::~wxEventLoop()
52{
53 wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
54}
55
56int wxEventLoop::Run()
57{
58 // event loops are not recursive, you need to create another loop!
59 wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
60
61 wxEventLoopActivator activate(this);
62
63 m_impl = new wxEventLoopImpl;
64
65 [[NSApplication sharedApplication] run];
66
67 int exitcode = m_impl->GetExitCode();
68 delete m_impl;
69 m_impl = NULL;
70
71 return exitcode;
72}
73
74void wxEventLoop::Exit(int rc)
75{
76 wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
77
78 m_impl->SetExitCode(rc);
79
80 NSApplication *cocoaApp = [NSApplication sharedApplication];
81 wxLogTrace(wxTRACE_COCOA,wxT("wxEventLoop::Exit isRunning=%d"), (int)[cocoaApp isRunning]);
82 wxTheApp->WakeUpIdle();
83 /* Notes:
84 If we're being called from idle time (which occurs while checking the
85 queue for new events) there may or may not be any events in the queue.
86 In order to successfully stop the event loop, at least one event must
87 be processed. To ensure this always happens, WakeUpIdle is called.
88
89 If the application was active when closed then this is unnecessary
90 because it would receive a deactivate event anyway. However, if the
91 application was not active when closed, then no events would be
92 added to the queue by Cocoa and thus the application would wait
93 indefinitely for the next event.
94 */
95 [cocoaApp stop: cocoaApp];
96}
97
98// ----------------------------------------------------------------------------
99// wxEventLoop message processing dispatching
100// ----------------------------------------------------------------------------
101
102bool wxEventLoop::Pending() const
103{
104 // a pointer to the event is returned if there is one, or nil if not
105 return [[NSApplication sharedApplication]
106 nextEventMatchingMask: NSAnyEventMask
107 untilDate: nil /* Equivalent to [NSDate distantPast] */
108 inMode: NSDefaultRunLoopMode
109 dequeue: NO];
110}
111
112bool wxEventLoop::Dispatch()
113{
114 // This check is required by wxGTK but probably not really for wxCocoa
115 // Keep it here to encourage developers to write cross-platform code
116 wxCHECK_MSG( IsRunning(), false, _T("can't call Dispatch() if not running") );
117 NSApplication *cocoaApp = [NSApplication sharedApplication];
118 // Block to retrieve an event then send it
119 if(NSEvent *event = [cocoaApp
120 nextEventMatchingMask:NSAnyEventMask
121 untilDate:[NSDate distantFuture]
122 inMode:NSDefaultRunLoopMode
123 dequeue: YES])
124 {
125 [cocoaApp sendEvent: event];
126 return true;
127 }
128 return false;
129}
130