axmol/cocos2dx/platform/ios/EAGLView.mm

/*

===== IMPORTANT =====

This is sample code demonstrating API, technology or techniques in development.
Although this sample code has been reviewed for technical accuracy, it is not
final. Apple is supplying this information to help you plan for the adoption of
the technologies and programming interfaces described herein. This information
is subject to change, and software implemented based on this sample code should
be tested with final operating system software and final documentation. Newer
versions of this sample code may be provided with future seeds of the API or
technology. For information about updates to this and other developer
documentation, view the New & Updated sidebars in subsequent documentation
seeds.

=====================

File: EAGLView.m
Abstract: Convenience class that wraps the CAEAGLLayer from CoreAnimation into a
UIView subclass.

Version: 1.3

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*/

#import <QuartzCore/QuartzCore.h>

#import "EAGLView.h"
#import "ES1Renderer.h"
#import "CCDirector.h"
#import "CCSet.h"
#import "CCTouch.h"
#import "CCIMEDispatcher.h"
#import "OpenGL_Internal.h"

//CLASS IMPLEMENTATIONS:

#define MAX_TOUCHES     11

static EAGLView *view;
static cocos2d::CCTouch *s_pTouches[MAX_TOUCHES];

@interface EAGLView (Private)
- (BOOL) setupSurfaceWithSharegroup:(EAGLSharegroup*)sharegroup;
- (unsigned int) convertPixelFormat:(NSString*) pixelFormat;
@end

@implementation EAGLView

@synthesize surfaceSize=size_;
@synthesize pixelFormat=pixelformat_, depthFormat=depthFormat_;
@synthesize context=context_;
@synthesize touchesIntergerDict;
@synthesize indexBitsUsed;
@synthesize multiSampling=multiSampling_;

+ (Class) layerClass
{
	return [CAEAGLLayer class];
}

+ (id) viewWithFrame:(CGRect)frame
{
	return [[[self alloc] initWithFrame:frame] autorelease];
}

+ (id) viewWithFrame:(CGRect)frame pixelFormat:(NSString*)format
{
	return [[[self alloc]initWithFrame:frame pixelFormat:format] autorelease];
}

+ (id) viewWithFrame:(CGRect)frame pixelFormat:(NSString*)format depthFormat:(GLuint)depth
{
	return [[[self alloc] initWithFrame:frame pixelFormat:format depthFormat:depth preserveBackbuffer:NO sharegroup:nil multiSampling:NO numberOfSamples:0] autorelease];
}

+ (id) viewWithFrame:(CGRect)frame pixelFormat:(NSString*)format depthFormat:(GLuint)depth preserveBackbuffer:(BOOL)retained sharegroup:(EAGLSharegroup*)sharegroup multiSampling:(BOOL)multisampling numberOfSamples:(unsigned int)samples
{
	return [[[self alloc]initWithFrame:frame pixelFormat:format depthFormat:depth preserveBackbuffer:retained sharegroup:sharegroup multiSampling:multisampling numberOfSamples:samples] autorelease];
}

+ (id) sharedEGLView
{
	return view;
}

- (id) initWithFrame:(CGRect)frame
{
	return [self initWithFrame:frame pixelFormat:kEAGLColorFormatRGB565 depthFormat:0 preserveBackbuffer:NO sharegroup:nil multiSampling:NO numberOfSamples:0];
}

- (id) initWithFrame:(CGRect)frame pixelFormat:(NSString*)format 
{
	return [self initWithFrame:frame pixelFormat:format depthFormat:0 preserveBackbuffer:NO sharegroup:nil multiSampling:NO numberOfSamples:0];
}

- (id) initWithFrame:(CGRect)frame pixelFormat:(NSString*)format depthFormat:(GLuint)depth preserveBackbuffer:(BOOL)retained sharegroup:(EAGLSharegroup*)sharegroup multiSampling:(BOOL)sampling numberOfSamples:(unsigned int)nSamples;
{
	if((self = [super initWithFrame:frame]))
	{
		pixelformat_ = format;
		depthFormat_ = depth;
		multiSampling_ = sampling;
		requestedSamples_ = nSamples;
		preserveBackbuffer_ = retained;
		
		if( ! [self setupSurfaceWithSharegroup:sharegroup] ) {
			[self release];
			return nil;
		}
	}
        
                touchesIntergerDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 4, NULL, NULL);
                indexBitsUsed = 0x00000000;

	view = self;
	return self;
}

-(id) initWithCoder:(NSCoder *)aDecoder
{
	if( (self = [super initWithCoder:aDecoder]) ) {
		
		CAEAGLLayer*			eaglLayer = (CAEAGLLayer*)[self layer];
		
		pixelformat_ = kEAGLColorFormatRGB565;
		depthFormat_ = 0; // GL_DEPTH_COMPONENT24_OES;
		multiSampling_= NO;
		requestedSamples_ = 0;
		size_ = [eaglLayer bounds].size;

		if( ! [self setupSurfaceWithSharegroup:nil] ) {
			[self release];
			return nil;
		}
    }
	
	view = self;
    return self;
}

-(int) getWidth
{
	CGSize bound = [self bounds].size;
	return bound.width;
}

-(int) getHeight
{
	CGSize bound = [self bounds].size;
	return bound.height;
}

-(int) getUnUsedIndex
{
    int i;
    int temp = indexBitsUsed;
    
    for (i = 0; i < MAX_TOUCHES; i++) {
        if (! (temp & 0x00000001)) {
            indexBitsUsed |= (1 <<  i);
            return i;
        }
        
        temp >>= 1;
    }
    
    // all bits are used
    return -1;
}

-(void) removeUsedIndexBit:(int) index
{
   if (index < 0 || index >= MAX_TOUCHES) {
       return;
   }
    
    unsigned int temp = 1 << index;
    temp = ~temp;
    indexBitsUsed &= temp;
}

-(BOOL) setupSurfaceWithSharegroup:(EAGLSharegroup*)sharegroup
{
	CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;
	
	eaglLayer.opaque = YES;
	eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
									[NSNumber numberWithBool:preserveBackbuffer_], kEAGLDrawablePropertyRetainedBacking,
									pixelformat_, kEAGLDrawablePropertyColorFormat, nil];
	
	
	renderer_ = [[ES1Renderer alloc] initWithDepthFormat:depthFormat_
										 withPixelFormat:[self convertPixelFormat:pixelformat_]
										  withSharegroup:sharegroup
									   withMultiSampling:multiSampling_
									 withNumberOfSamples:requestedSamples_];
	if (!renderer_)
		return NO;
	
	context_ = [renderer_ context];
	[context_ renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:eaglLayer];

	//discardFramebufferSupported_ = [[CCConfiguration sharedConfiguration] supportsDiscardFramebuffer];
	
	return YES;
}

- (void) dealloc
{
    CFRelease(touchesIntergerDict);
	[renderer_ release];
	[super dealloc];
}

- (void) layoutSubviews
{
    [renderer_ resizeFromLayer:(CAEAGLLayer*)self.layer];
	size_ = [renderer_ backingSize];

	// Issue #914 #924
// 	CCDirector *director = [CCDirector sharedDirector];
// 	[director reshapeProjection:size_];
    cocos2d::CCSize size;
    size.width = size_.width;
    size.height = size_.height;
    cocos2d::CCDirector::sharedDirector()->reshapeProjection(size);

	// Avoid flicker. Issue #350
	//[director performSelectorOnMainThread:@selector(drawScene) withObject:nil waitUntilDone:YES];
	cocos2d::CCDirector::sharedDirector()->drawScene();
}

- (void) swapBuffers
{
	// IMPORTANT:
	// - preconditions
	//	-> context_ MUST be the OpenGL context
	//	-> renderbuffer_ must be the the RENDER BUFFER

#ifdef __IPHONE_4_0
	
	if (multiSampling_)
	{
		/* Resolve from msaaFramebuffer to resolveFramebuffer */
		//glDisable(GL_SCISSOR_TEST);     
		glBindFramebufferOES(GL_READ_FRAMEBUFFER_APPLE, [renderer_ msaaFrameBuffer]);
		glBindFramebufferOES(GL_DRAW_FRAMEBUFFER_APPLE, [renderer_ defaultFrameBuffer]);
		glResolveMultisampleFramebufferAPPLE();
	}
	
	if( discardFramebufferSupported_)
	{	
		if (multiSampling_)
		{
			if (depthFormat_)
			{
				GLenum attachments[] = {GL_COLOR_ATTACHMENT0_OES, GL_DEPTH_ATTACHMENT_OES};
				glDiscardFramebufferEXT(GL_READ_FRAMEBUFFER_APPLE, 2, attachments);
			}
			else
			{
				GLenum attachments[] = {GL_COLOR_ATTACHMENT0_OES};
				glDiscardFramebufferEXT(GL_READ_FRAMEBUFFER_APPLE, 1, attachments);
			}
			
			glBindRenderbufferOES(GL_RENDERBUFFER_OES, [renderer_ colorRenderBuffer]);
	
		}	
		
		// not MSAA
		else if (depthFormat_ ) {
			GLenum attachments[] = { GL_DEPTH_ATTACHMENT_OES};
			glDiscardFramebufferEXT(GL_FRAMEBUFFER_OES, 1, attachments);
		}
	}
	
#endif // __IPHONE_4_0
	
 	if(![context_ presentRenderbuffer:GL_RENDERBUFFER_OES])
        {
// 		CCLOG(@"cocos2d: Failed to swap renderbuffer in %s\n", __FUNCTION__);
        }

#if COCOS2D_DEBUG
	CHECK_GL_ERROR();
#endif
	
	// We can safely re-bind the framebuffer here, since this will be the
	// 1st instruction of the new main loop
	if( multiSampling_ )
		glBindFramebufferOES(GL_FRAMEBUFFER_OES, [renderer_ msaaFrameBuffer]);	
}

- (unsigned int) convertPixelFormat:(NSString*) pixelFormat
{
	// define the pixel format
	GLenum pFormat;
	
	
	if([pixelFormat isEqualToString:@"EAGLColorFormat565"]) 
		pFormat = GL_RGB565_OES;
	else 
		pFormat = GL_RGBA8_OES;
	
	return pFormat;
}

#pragma mark EAGLView - Point conversion

- (CGPoint) convertPointFromViewToSurface:(CGPoint)point
{
	CGRect bounds = [self bounds];
        
        CGPoint ret;
        ret.x = (point.x - bounds.origin.x) / bounds.size.width * size_.width;
        ret.y =  (point.y - bounds.origin.y) / bounds.size.height * size_.height;
    
        return ret;
}

- (CGRect) convertRectFromViewToSurface:(CGRect)rect
{
	CGRect bounds = [self bounds];
    
        CGRect ret;
        ret.origin.x = (rect.origin.x - bounds.origin.x) / bounds.size.width * size_.width;
        ret.origin.y = (rect.origin.y - bounds.origin.y) / bounds.size.height * size_.height;
        ret.size.width = rect.size.width / bounds.size.width * size_.width;
        ret.size.height = rect.size.height / bounds.size.height * size_.height;
    
        return ret;
}

// Pass the touches to the superview
#pragma mark EAGLView - Touch Delegate

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
	cocos2d::CCSet set;
    cocos2d::CCTouch *pTouch;
    
	for (UITouch *touch in touches) {
                NSNumber *index = (NSNumber*)CFDictionaryGetValue(touchesIntergerDict, touch);
                int unUsedIndex = 0;
        
                // it is a new touch
                if (! index) {
                    unUsedIndex = [self getUnUsedIndex];
                    
                    // The touches is more than MAX_TOUCHES ?
                    if (unUsedIndex == -1) {
                        return;
                    }
                    
                    pTouch = s_pTouches[unUsedIndex] = new cocos2d::CCTouch();
                }

		float x = [touch locationInView: [touch view]].x;
		float y = [touch locationInView: [touch view]].y;
		pTouch->SetTouchInfo(0, x, y);
        
                CFDictionaryAddValue(touchesIntergerDict, touch, [NSNumber numberWithInt:unUsedIndex]);
		
		set.addObject(pTouch);
	}
	
	cocos2d::CCDirector::sharedDirector()->getOpenGLView()->touchesBegan(&set);
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
	cocos2d::CCSet set;
	for (UITouch *touch in touches) {
		NSNumber *index = (NSNumber*)CFDictionaryGetValue(touchesIntergerDict, touch);
                if (! index) {
                    // if the index doesn't exist, it is an error
                    return;
                }
                
                cocos2d::CCTouch *pTouch = s_pTouches[[index intValue]];
                if (! pTouch) {
                    // if the pTouch is null, it is an error
                    return;
                }
        
		float x = [touch locationInView: [touch view]].x;
		float y = [touch locationInView: [touch view]].y;
		pTouch->SetTouchInfo(0, x, y);
		
		set.addObject(pTouch);
	}
	
	cocos2d::CCDirector::sharedDirector()->getOpenGLView()->touchesMoved(&set);
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
	cocos2d::CCSet set;
	for (UITouch *touch in touches) {
            NSNumber *index = (NSNumber*)CFDictionaryGetValue(touchesIntergerDict, touch);
            if (! index) {
                // if the index doesn't exist, it is an error
                return;
            }
        
                cocos2d::CCTouch *pTouch = s_pTouches[[index intValue]];
                if (! pTouch) {
                    // if the pTouch is null, it is an error
                    return;
                }
        
		float x = [touch locationInView: [touch view]].x;
		float y = [touch locationInView: [touch view]].y;
		pTouch->SetTouchInfo(0, x, y);
		
		set.addObject(pTouch);
                CFDictionaryRemoveValue(touchesIntergerDict, touch);
                pTouch->release();
                s_pTouches[[index intValue]] = NULL;
                [self removeUsedIndexBit:[index intValue]];
	}
	
	cocos2d::CCDirector::sharedDirector()->getOpenGLView()->touchesEnded(&set);
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
	cocos2d::CCSet set;
	for (UITouch *touch in touches) {
            NSNumber *index = (NSNumber*)CFDictionaryGetValue(touchesIntergerDict, touch);
            if (! index) {
                // if the index doesn't exist, it is an error
                return;
            }
        
                cocos2d::CCTouch *pTouch = s_pTouches[[index intValue]];
                if (! pTouch) {
                    // if the pTouch is null, it is an error
                    return;
                }
        
		float x = [touch locationInView: [touch view]].x;
		float y = [touch locationInView: [touch view]].y;
		pTouch->SetTouchInfo(0, x, y);
		
		set.addObject(pTouch);
                CFDictionaryRemoveValue(touchesIntergerDict, touch);
                pTouch->release();
                s_pTouches[[index intValue]] = NULL;
                [self removeUsedIndexBit:[index intValue]];
	}
	
	cocos2d::CCDirector::sharedDirector()->getOpenGLView()->touchesCancelled(&set);
}

#pragma mark -
#pragma mark UIView - Responder

- (BOOL)canBecomeFirstResponder
{
    markedText_ = nil;
    return YES;
}

#pragma mark -
#pragma mark EAGLView - UIKeyInput

- (BOOL)hasText
{
    return NO;
}

- (void)insertText:(NSString *)text
{
    const char * pszText = [text cStringUsingEncoding:NSUTF8StringEncoding];
    cocos2d::CCIMEDispatcher::sharedDispatcher()->dispatchInsertText(pszText, strlen(pszText));
}

- (void)deleteBackward
{
    cocos2d::CCIMEDispatcher::sharedDispatcher()->dispatchDeleteBackward();
}

#pragma mark -
#pragma mark UITextInput protocol

#pragma mark UITextInput - properties

@synthesize beginningOfDocument;
@synthesize endOfDocument;
@synthesize inputDelegate;
@synthesize markedTextRange;
@synthesize markedTextStyle;
// @synthesize selectedTextRange;       // must implement
@synthesize tokenizer;

/* Text may have a selection, either zero-length (a caret) or ranged.  Editing operations are
 * always performed on the text from this selection.  nil corresponds to no selection. */
- (void)setSelectedTextRange:(UITextRange *)aSelectedTextRange;
{
    CCLOG("UITextRange:setSelectedTextRange");
}
- (UITextRange *)selectedTextRange;
{
	return [[[UITextRange alloc] init] autorelease];
}

#pragma mark UITextInput - Replacing and Returning Text

- (NSString *)textInRange:(UITextRange *)range;
{
    CCLOG("textInRange");
	return nil;
}
- (void)replaceRange:(UITextRange *)range withText:(NSString *)theText;
{
    CCLOG("replaceRange");
}

#pragma mark UITextInput - Working with Marked and Selected Text



/* If text can be selected, it can be marked. Marked text represents provisionally
 * inserted text that has yet to be confirmed by the user.  It requires unique visual
 * treatment in its display.  If there is any marked text, the selection, whether a
 * caret or an extended range, always resides witihin.
 *
 * Setting marked text either replaces the existing marked text or, if none is present,
 * inserts it from the current selection. */ 

- (void)setMarkedTextRange:(UITextRange *)markedTextRange;
{
    CCLOG("setMarkedTextRange");
}

- (UITextRange *)markedTextRange;
{
    CCLOG("markedTextRange");
	return nil; // Nil if no marked text.
}
- (void)setMarkedTextStyle:(NSDictionary *)markedTextStyle;
{
    CCLOG("setMarkedTextStyle");
    
}
- (NSDictionary *)markedTextStyle;
{
    CCLOG("markedTextStyle");
	return nil;
}
- (void)setMarkedText:(NSString *)markedText selectedRange:(NSRange)selectedRange;
{
    CCLOG("setMarkedText");
    markedText_ = markedText;
}
- (void)unmarkText;
{
    CCLOG("unmarkText");
    if (nil == markedText_)
    {
        return;
    }
    const char * pszText = [markedText_ cStringUsingEncoding:NSUTF8StringEncoding];
    cocos2d::CCIMEDispatcher::sharedDispatcher()->dispatchInsertText(pszText, strlen(pszText));
    markedText_ = nil;
}

#pragma mark Methods for creating ranges and positions.

- (UITextRange *)textRangeFromPosition:(UITextPosition *)fromPosition toPosition:(UITextPosition *)toPosition;
{
    CCLOG("textRangeFromPosition");
	return nil;
}
- (UITextPosition *)positionFromPosition:(UITextPosition *)position offset:(NSInteger)offset;
{
    CCLOG("positionFromPosition");
	return nil;
}
- (UITextPosition *)positionFromPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction offset:(NSInteger)offset;
{
    CCLOG("positionFromPosition");
	return nil;
}

/* Simple evaluation of positions */
- (NSComparisonResult)comparePosition:(UITextPosition *)position toPosition:(UITextPosition *)other;
{
    CCLOG("comparePosition");
	return 0;
}
- (NSInteger)offsetFromPosition:(UITextPosition *)from toPosition:(UITextPosition *)toPosition;
{
    CCLOG("offsetFromPosition");
	return 0;
}

- (UITextPosition *)positionWithinRange:(UITextRange *)range farthestInDirection:(UITextLayoutDirection)direction;
{
    CCLOG("positionWithinRange");
	return nil;
}
- (UITextRange *)characterRangeByExtendingPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction;
{
    CCLOG("characterRangeByExtendingPosition");
	return nil;
}

#pragma mark Writing direction

- (UITextWritingDirection)baseWritingDirectionForPosition:(UITextPosition *)position inDirection:(UITextStorageDirection)direction;
{
    CCLOG("baseWritingDirectionForPosition");
	return UITextWritingDirectionNatural;
}
- (void)setBaseWritingDirection:(UITextWritingDirection)writingDirection forRange:(UITextRange *)range;
{
    CCLOG("setBaseWritingDirection");
}

#pragma mark Geometry

/* Geometry used to provide, for example, a correction rect. */
- (CGRect)firstRectForRange:(UITextRange *)range;
{
    CCLOG("firstRectForRange");
	return CGRectNull;
}
- (CGRect)caretRectForPosition:(UITextPosition *)position;
{
	CCLOG("caretRectForPosition");
	return CGRectMake(0, 0, 0, 0);
}

#pragma mark Hit testing

/* JS - Find the closest position to a given point */
- (UITextPosition *)closestPositionToPoint:(CGPoint)point;
{
    CCLOG(@"closestPositionToPoint");
	return nil;
}
- (UITextPosition *)closestPositionToPoint:(CGPoint)point withinRange:(UITextRange *)range;
{
    CCLOG("closestPositionToPoint");
	return nil;
}
- (UITextRange *)characterRangeAtPoint:(CGPoint)point;
{
    CCLOG("characterRangeAtPoint");
	return nil;
}

@end