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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/fullscreen.h"
#import <Carbon/Carbon.h>
#import <Cocoa/Cocoa.h>
#import "base/logging.h"
@interface FullScreenMonitor : NSObject {
@private
BOOL fullScreen_;
EventHandlerRef eventHandler_;
}
@property (nonatomic, getter=isFullScreen) BOOL fullScreen;
@end
static OSStatus handleAppEvent(EventHandlerCallRef myHandler,
EventRef event,
void* userData) {
DCHECK(userData);
FullScreenMonitor* fullScreenMonitor =
reinterpret_cast<FullScreenMonitor*>(userData);
UInt32 mode = 0;
OSStatus status = GetEventParameter(event,
kEventParamSystemUIMode,
typeUInt32,
NULL,
sizeof(UInt32),
NULL,
&mode);
if (status != noErr)
return status;
BOOL isFullScreenMode = mode == kUIModeAllHidden;
[fullScreenMonitor setFullScreen:isFullScreenMode];
return noErr;
}
@implementation FullScreenMonitor
@synthesize fullScreen = fullScreen_;
- (id)init {
if ((self = [super init])) {
// Check if the user is in presentation mode initially.
SystemUIMode currentMode;
GetSystemUIMode(¤tMode, NULL);
fullScreen_ = currentMode == kUIModeAllHidden;
// Register a Carbon event to receive the notification about the login
// session's UI mode change.
EventTypeSpec events[] =
{{ kEventClassApplication, kEventAppSystemUIModeChanged }};
OSStatus status = InstallApplicationEventHandler(
NewEventHandlerUPP(handleAppEvent),
GetEventTypeCount(events),
events,
self,
&eventHandler_);
if (status) {
[self release];
self = nil;
}
}
return self;
}
- (void)dealloc {
if (eventHandler_)
RemoveEventHandler(eventHandler_);
[super dealloc];
}
@end
static FullScreenMonitor* g_fullScreenMonitor = nil;
void InitFullScreenMonitor() {
if (!g_fullScreenMonitor)
g_fullScreenMonitor = [[FullScreenMonitor alloc] init];
}
void StopFullScreenMonitor() {
[g_fullScreenMonitor release];
g_fullScreenMonitor = nil;
}
bool IsFullScreenMode() {
// Check if the main display has been captured (game in particular).
if (CGDisplayIsCaptured(CGMainDisplayID()))
return true;
return [g_fullScreenMonitor isFullScreen];
}
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