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+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2008-2010 Ricardo Quesada
+ * Copyright (c) 2011 Zynga Inc.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+// Only compile this code on iOS. These files should NOT be included on your Mac project.
+// But in case they are included, it won't be compiled.
+#import <Availability.h>
+#ifdef __IPHONE_OS_VERSION_MAX_ALLOWED
+
+#import "../../CCDirector.h"
+
+/** @typedef ccDeviceOrientation
+ Possible device orientations
+ */
+typedef enum {
+        /// Device oriented vertically, home button on the bottom
+        kCCDeviceOrientationPortrait = UIDeviceOrientationPortrait,     
+        /// Device oriented vertically, home button on the top
+    kCCDeviceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,
+        /// Device oriented horizontally, home button on the right
+    kCCDeviceOrientationLandscapeLeft = UIDeviceOrientationLandscapeLeft,
+        /// Device oriented horizontally, home button on the left
+    kCCDeviceOrientationLandscapeRight = UIDeviceOrientationLandscapeRight,
+        
+        // Backward compatibility stuff
+        CCDeviceOrientationPortrait = kCCDeviceOrientationPortrait,
+        CCDeviceOrientationPortraitUpsideDown = kCCDeviceOrientationPortraitUpsideDown,
+        CCDeviceOrientationLandscapeLeft = kCCDeviceOrientationLandscapeLeft,
+        CCDeviceOrientationLandscapeRight = kCCDeviceOrientationLandscapeRight,
+} ccDeviceOrientation;
+
+/** @typedef ccDirectorType
+ Possible Director Types.
+ @since v0.8.2
+ */
+typedef enum {
+        /** Will use a Director that triggers the main loop from an NSTimer object
+         *
+         * Features and Limitations:
+         * - Integrates OK with UIKit objects
+         * - It the slowest director
+         * - The invertal update is customizable from 1 to 60
+         */
+        kCCDirectorTypeNSTimer,
+        
+        /** will use a Director that triggers the main loop from a custom main loop.
+         *
+         * Features and Limitations:
+         * - Faster than NSTimer Director
+         * - It doesn't integrate well with UIKit objecgts
+         * - The interval update can't be customizable
+         */
+        kCCDirectorTypeMainLoop,
+        
+        /** Will use a Director that triggers the main loop from a thread, but the main loop will be executed on the main thread.
+         *
+         * Features and Limitations:
+         * - Faster than NSTimer Director
+         * - It doesn't integrate well with UIKit objecgts
+         * - The interval update can't be customizable
+         */
+        kCCDirectorTypeThreadMainLoop,
+        
+        /** Will use a Director that synchronizes timers with the refresh rate of the display.
+         *
+         * Features and Limitations:
+         * - Faster than NSTimer Director
+         * - Only available on 3.1+
+         * - Scheduled timers & drawing are synchronizes with the refresh rate of the display
+         * - Integrates OK with UIKit objects
+         * - The interval update can be 1/60, 1/30, 1/15
+         */     
+        kCCDirectorTypeDisplayLink,
+        
+        /** Default director is the NSTimer directory */
+        kCCDirectorTypeDefault = kCCDirectorTypeNSTimer,
+        
+        // backward compatibility stuff
+        CCDirectorTypeNSTimer = kCCDirectorTypeNSTimer,
+        CCDirectorTypeMainLoop = kCCDirectorTypeMainLoop,
+        CCDirectorTypeThreadMainLoop = kCCDirectorTypeThreadMainLoop,
+        CCDirectorTypeDisplayLink = kCCDirectorTypeDisplayLink,
+        CCDirectorTypeDefault = kCCDirectorTypeDefault,
+        
+        
+} ccDirectorType;
+
+/** CCDirector extensions for iPhone
+ */
+@interface CCDirector (iOSExtension)
+
+// rotates the screen if an orientation differnent than Portrait is used
+-(void) applyOrientation;
+
+/** Sets the device orientation.
+ If the orientation is going to be controlled by an UIViewController, then the orientation should be Portrait
+ */
+-(void) setDeviceOrientation:(ccDeviceOrientation)orientation;
+
+/** returns the device orientation */
+-(ccDeviceOrientation) deviceOrientation;
+
+/** The size in pixels of the surface. It could be different than the screen size.
+ High-res devices might have a higher surface size than the screen size.
+ In non High-res device the contentScale will be emulated.
+
+ The recommend way to enable Retina Display is by using the "enableRetinaDisplay:(BOOL)enabled" method.
+
+ @since v0.99.4
+ */
+-(void) setContentScaleFactor:(CGFloat)scaleFactor;
+
+/** Will enable Retina Display on devices that supports it.
+ It will enable Retina Display on iPhone4 and iPod Touch 4.
+ It will return YES, if it could enabled it, otherwise it will return NO.
+ 
+ This is the recommened way to enable Retina Display.
+ @since v0.99.5
+ */
+-(BOOL) enableRetinaDisplay:(BOOL)yes;
+
+
+/** returns the content scale factor */
+-(CGFloat) contentScaleFactor;
+@end
+
+@interface CCDirector (iOSExtensionClassMethods)
+
+/** There are 4 types of Director.
+ - kCCDirectorTypeNSTimer (default)
+ - kCCDirectorTypeMainLoop
+ - kCCDirectorTypeThreadMainLoop
+ - kCCDirectorTypeDisplayLink
+ 
+ Each Director has it's own benefits, limitations.
+ If you are using SDK 3.1 or newer it is recommed to use the DisplayLink director
+ 
+ This method should be called before any other call to the director.
+ 
+ It will return NO if the director type is kCCDirectorTypeDisplayLink and the running SDK is < 3.1. Otherwise it will return YES.
+ 
+ @since v0.8.2
+ */
++(BOOL) setDirectorType:(ccDirectorType) directorType;
+@end
+
+#pragma mark -
+#pragma mark CCDirectorIOS
+
+/** CCDirectorIOS: Base class of iOS directors
+ @since v0.99.5
+ */
+@interface CCDirectorIOS : CCDirector
+{
+        /* orientation */
+        ccDeviceOrientation     deviceOrientation_;
+        
+        /* contentScaleFactor could be simulated */
+        BOOL    isContentScaleSupported_;
+        
+}
+@end
+
+/** FastDirector is a Director that triggers the main loop as fast as possible.
+ *
+ * Features and Limitations:
+ *  - Faster than "normal" director
+ *  - Consumes more battery than the "normal" director
+ *  - It has some issues while using UIKit objects
+ */
+@interface CCDirectorFast : CCDirectorIOS
+{
+        BOOL isRunning;
+        
+        NSAutoreleasePool       *autoreleasePool;
+}
+-(void) mainLoop;
+@end
+
+/** ThreadedFastDirector is a Director that triggers the main loop from a thread.
+ *
+ * Features and Limitations:
+ *  - Faster than "normal" director
+ *  - Consumes more battery than the "normal" director
+ *  - It can be used with UIKit objects
+ *
+ * @since v0.8.2
+ */
+@interface CCDirectorFastThreaded : CCDirectorIOS
+{
+        BOOL isRunning; 
+}
+-(void) mainLoop;
+@end
+
+/** DisplayLinkDirector is a Director that synchronizes timers with the refresh rate of the display.
+ *
+ * Features and Limitations:
+ * - Only available on 3.1+
+ * - Scheduled timers & drawing are synchronizes with the refresh rate of the display
+ * - Only supports animation intervals of 1/60 1/30 & 1/15
+ *
+ * It is the recommended Director if the SDK is 3.1 or newer
+ *
+ * @since v0.8.2
+ */
+@interface CCDirectorDisplayLink : CCDirectorIOS
+{
+        id displayLink;
+}
+-(void) mainLoop:(id)sender;
+@end
+
+/** TimerDirector is a Director that calls the main loop from an NSTimer object
+ *
+ * Features and Limitations:
+ * - Integrates OK with UIKit objects
+ * - It the slowest director
+ * - The invertal update is customizable from 1 to 60
+ *
+ * It is the default Director.
+ */
+@interface CCDirectorTimer : CCDirectorIOS
+{
+        NSTimer *animationTimer;
+}
+-(void) mainLoop;
+@end
+
+// optimization. Should only be used to read it. Never to write it.
+extern CGFloat  __ccContentScaleFactor;
+
+#endif // __IPHONE_OS_VERSION_MAX_ALLOWED