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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "chrome/browser/idle.h"
#import <Cocoa/Cocoa.h>
#import <CoreGraphics/CGEventSource.h>
@interface MacScreenMonitor : NSObject {
@private
BOOL screensaverRunning_;
BOOL screenLocked_;
}
@property (readonly,
nonatomic,
getter=isScreensaverRunning) BOOL screensaverRunning;
@property (readonly, nonatomic, getter=isScreenLocked) BOOL screenLocked;
@end
@implementation MacScreenMonitor
@synthesize screensaverRunning = screensaverRunning_;
@synthesize screenLocked = screenLocked_;
- (id)init {
if ((self = [super init])) {
NSDistributedNotificationCenter* distCenter =
[NSDistributedNotificationCenter defaultCenter];
[distCenter addObserver:self
selector:@selector(onScreenSaverStarted:)
name:@"com.apple.screensaver.didstart"
object:nil];
[distCenter addObserver:self
selector:@selector(onScreenSaverStopped:)
name:@"com.apple.screensaver.didstop"
object:nil];
[distCenter addObserver:self
selector:@selector(onScreenLocked:)
name:@"com.apple.screenIsLocked"
object:nil];
[distCenter addObserver:self
selector:@selector(onScreenUnlocked:)
name:@"com.apple.screenIsUnlocked"
object:nil];
}
return self;
}
- (void)dealloc {
[[NSDistributedNotificationCenter defaultCenter] removeObject:self];
[super dealloc];
}
- (void)onScreenSaverStarted:(NSNotification*)notification {
screensaverRunning_ = YES;
}
- (void)onScreenSaverStopped:(NSNotification*)notification {
screensaverRunning_ = NO;
}
- (void)onScreenLocked:(NSNotification*)notification {
screenLocked_ = YES;
}
- (void)onScreenUnlocked:(NSNotification*)notification {
screenLocked_ = NO;
}
@end
static MacScreenMonitor* g_screenMonitor = nil;
void InitIdleMonitor() {
if (!g_screenMonitor)
g_screenMonitor = [[MacScreenMonitor alloc] init];
}
void StopIdleMonitor() {
[g_screenMonitor release];
g_screenMonitor = nil;
}
void CalculateIdleState(unsigned int idle_threshold, IdleCallback notify) {
if (CheckIdleStateIsLocked()) {
notify.Run(IDLE_STATE_LOCKED);
return;
}
CFTimeInterval idle_time = CGEventSourceSecondsSinceLastEventType(
kCGEventSourceStateCombinedSessionState,
kCGAnyInputEventType);
if (idle_time >= idle_threshold)
notify.Run(IDLE_STATE_IDLE);
else
notify.Run(IDLE_STATE_ACTIVE);
}
bool CheckIdleStateIsLocked() {
return [g_screenMonitor isScreensaverRunning] ||
[g_screenMonitor isScreenLocked];
}
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