axmol/cocos/platform/ios/CCEAGLView-ios.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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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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*/
#import "platform/ios/CCEAGLView-ios.h"

#import <QuartzCore/QuartzCore.h>
#import <Metal/Metal.h>

#import "base/CCDirector.h"
#import "base/CCTouch.h"
#import "base/CCIMEDispatcher.h"
#import "renderer/backend/metal/DeviceMTL.h"
#import "platform/ios/CCInputView-ios.h"

//CLASS IMPLEMENTATIONS:

#define IOS_MAX_TOUCHES_COUNT     10

@interface CCEAGLView ()
@property (nonatomic) CCInputView* textInputView;
@property(nonatomic, readwrite, assign) BOOL isKeyboardShown;
@property(nonatomic, copy) NSNotification* keyboardShowNotification;
@property(nonatomic, assign) CGRect originalRect;
@end

@implementation CCEAGLView

@synthesize surfaceSize=size_;
@synthesize pixelFormat=pixelformat_, depthFormat=depthFormat_;
@synthesize multiSampling=multiSampling_;
@synthesize keyboardShowNotification = keyboardShowNotification_;
@synthesize isKeyboardShown;
@synthesize originalRect = originalRect_;

+ (Class) layerClass
{
    return [CAMetalLayer 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) 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]))
    {
        self.textInputView = [[CCInputView alloc] initWithFrame:frame];

        originalRect_ = self.frame;
        self.keyboardShowNotification = nil;
        if ([self respondsToSelector:@selector(setContentScaleFactor:)])
        {
            self.contentScaleFactor = [[UIScreen mainScreen] scale];
        }

        id<MTLDevice> device = MTLCreateSystemDefaultDevice();
        if (!device)
        {
             CCLOG("Doesn't support metal.");
             return nil;
        }
        CAMetalLayer* metalLayer = (CAMetalLayer*)[self layer];
        metalLayer.device = device;
        metalLayer.pixelFormat = MTLPixelFormatBGRA8Unorm;
        metalLayer.framebufferOnly = YES;
        cocos2d::backend::DeviceMTL::setCAMetalLayer(metalLayer);
    }
    
    return self;
}

-(id) initWithCoder:(NSCoder *)aDecoder
{
    if ( (self = [super initWithCoder:aDecoder]) )
    {
        size_ = [self bounds].size;
        self.textInputView = [[CCInputView alloc] initWithCoder:aDecoder];
    }
    
    return self;
}


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

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

- (void) dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self]; // remove keyboard notification
    [self.textInputView release];
    [super dealloc];
}

- (void) layoutSubviews
{
    if (!cocos2d::Director::getInstance()->isValid())
        return;

    size_ = [self bounds].size;
    size_.width *= self.contentScaleFactor;
    size_.height *= self.contentScaleFactor;

    // Avoid flicker. Issue #350
    if ([NSThread isMainThread])
    {
        cocos2d::Director::getInstance()->drawScene();
    }
}

- (void) swapBuffers
{
}

#pragma mark CCEAGLView - 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 CCEAGLView - Touch Delegate
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    if (self.isKeyboardShown)
        [self closeKeyboardOpenedByEditBox];
    
    UITouch* ids[IOS_MAX_TOUCHES_COUNT] = {0};
    float xs[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    float ys[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    
    int i = 0;
    for (UITouch *touch in touches) {
        if (i >= IOS_MAX_TOUCHES_COUNT) {
            CCLOG("warning: touches more than 10, should adjust IOS_MAX_TOUCHES_COUNT");
            break;
        }

        ids[i] = touch;
        xs[i] = [touch locationInView: [touch view]].x * self.contentScaleFactor;
        ys[i] = [touch locationInView: [touch view]].y * self.contentScaleFactor;
        ++i;
    }

    auto glview = cocos2d::Director::getInstance()->getOpenGLView();
    glview->handleTouchesBegin(i, (intptr_t*)ids, xs, ys);
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch* ids[IOS_MAX_TOUCHES_COUNT] = {0};
    float xs[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    float ys[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    float fs[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    float ms[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    
    int i = 0;
    for (UITouch *touch in touches) {
        if (i >= IOS_MAX_TOUCHES_COUNT) {
            CCLOG("warning: touches more than 10, should adjust IOS_MAX_TOUCHES_COUNT");
            break;
        }

        ids[i] = touch;
        xs[i] = [touch locationInView: [touch view]].x * self.contentScaleFactor;
        ys[i] = [touch locationInView: [touch view]].y * self.contentScaleFactor;
#if defined(__IPHONE_9_0) && (__IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_9_0)
        // running on iOS 9.0 or higher version
        if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 9.0f) {
            fs[i] = touch.force;
            ms[i] = touch.maximumPossibleForce;
        }
#endif
        ++i;
    }

    auto glview = cocos2d::Director::getInstance()->getOpenGLView();
    glview->handleTouchesMove(i, (intptr_t*)ids, xs, ys, fs, ms);
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch* ids[IOS_MAX_TOUCHES_COUNT] = {0};
    float xs[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    float ys[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    
    int i = 0;
    for (UITouch *touch in touches) {
        if (i >= IOS_MAX_TOUCHES_COUNT) {
            CCLOG("warning: touches more than 10, should adjust IOS_MAX_TOUCHES_COUNT");
            break;
        }

        ids[i] = touch;
        xs[i] = [touch locationInView: [touch view]].x * self.contentScaleFactor;
        ys[i] = [touch locationInView: [touch view]].y * self.contentScaleFactor;
        ++i;
    }

    auto glview = cocos2d::Director::getInstance()->getOpenGLView();
    glview->handleTouchesEnd(i, (intptr_t*)ids, xs, ys);
}
    
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch* ids[IOS_MAX_TOUCHES_COUNT] = {0};
    float xs[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    float ys[IOS_MAX_TOUCHES_COUNT] = {0.0f};
    
    int i = 0;
    for (UITouch *touch in touches) {
        if (i >= IOS_MAX_TOUCHES_COUNT) {
            CCLOG("warning: touches more than 10, should adjust IOS_MAX_TOUCHES_COUNT");
            break;
        }
        
        ids[i] = touch;
        xs[i] = [touch locationInView: [touch view]].x * self.contentScaleFactor;
        ys[i] = [touch locationInView: [touch view]].y * self.contentScaleFactor;
        ++i;
    }

    auto glview = cocos2d::Director::getInstance()->getOpenGLView();
    glview->handleTouchesCancel(i, (intptr_t*)ids, xs, ys);
}

- (void) showKeyboard
{
    [self addSubview:self.textInputView];
    [self.textInputView becomeFirstResponder];
}

- (void) hideKeyboard
{
    [self.textInputView resignFirstResponder];
    [self.textInputView removeFromSuperview];
}

-(void) doAnimationWhenKeyboardMoveWithDuration:(float) duration distance:(float) dis
{
    [UIView beginAnimations:nil context:nullptr];
        [UIView setAnimationDelegate:self];
        [UIView setAnimationDuration:duration];
        [UIView setAnimationBeginsFromCurrentState:YES];
        
        //NSLog(@"[animation] dis = %f, scale = %f \n", dis, cocos2d::GLView::getInstance()->getScaleY());
        
        if (dis < 0.0f) dis = 0.0f;

        auto glview = cocos2d::Director::getInstance()->getOpenGLView();
        dis *= glview->getScaleY();
        
        dis /= self.contentScaleFactor;

    #if defined(CC_TARGET_OS_TVOS)
        self.frame = CGRectMake(originalRect_.origin.x, originalRect_.origin.y - dis, originalRect_.size.width, originalRect_.size.height);
    #else
        switch (getFixedOrientation([[UIApplication sharedApplication] statusBarOrientation]))
        {
            case UIInterfaceOrientationPortrait:
                self.frame = CGRectMake(originalRect_.origin.x, originalRect_.origin.y - dis, originalRect_.size.width, originalRect_.size.height);
                break;
                
            case UIInterfaceOrientationPortraitUpsideDown:
                self.frame = CGRectMake(originalRect_.origin.x, originalRect_.origin.y + dis, originalRect_.size.width, originalRect_.size.height);
                break;
                
            case UIInterfaceOrientationLandscapeLeft:
                self.frame = CGRectMake(originalRect_.origin.x - dis, originalRect_.origin.y , originalRect_.size.width, originalRect_.size.height);
                break;
                
            case UIInterfaceOrientationLandscapeRight:
                self.frame = CGRectMake(originalRect_.origin.x + dis, originalRect_.origin.y , originalRect_.size.width, originalRect_.size.height);
                break;
                
            default:
                break;
        }
    #endif
        
        [UIView commitAnimations];
}

-(void) doAnimationWhenAnotherEditBeClicked
{
    if (self.keyboardShowNotification != nil)
    {
        [[NSNotificationCenter defaultCenter]postNotification:self.keyboardShowNotification];
    }
}

#pragma UIKeyboard notification

#if !defined(CC_TARGET_OS_TVOS)
namespace {
    UIInterfaceOrientation getFixedOrientation(UIInterfaceOrientation statusBarOrientation)
    {
        if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
        {
            statusBarOrientation = UIInterfaceOrientationPortrait;
        }
        return statusBarOrientation;
    }
}
#endif

- (void)didMoveToWindow
{
#if !defined(CC_TARGET_OS_TVOS)
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(onUIKeyboardNotification:)
                                                 name:UIKeyboardWillShowNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(onUIKeyboardNotification:)
                                                 name:UIKeyboardDidShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(onUIKeyboardNotification:)
                                                 name:UIKeyboardWillHideNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(onUIKeyboardNotification:)
                                                 name:UIKeyboardDidHideNotification object:nil];
#endif
}

- (void)onUIKeyboardNotification:(NSNotification *)notif
{
    NSString * type = notif.name;
    
    NSDictionary* info = [notif userInfo];
    CGRect begin = [self convertRect:
                    [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue]
                            fromView:self];
    CGRect end = [self convertRect:
                  [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue]
                          fromView:self];
    double aniDuration = [[info objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
    
    CGSize viewSize = self.frame.size;

    CGFloat tmp;
    switch (getFixedOrientation([[UIApplication sharedApplication] statusBarOrientation]))
    {
        case UIInterfaceOrientationPortrait:
            begin.origin.y = viewSize.height - begin.origin.y - begin.size.height;
            end.origin.y = viewSize.height - end.origin.y - end.size.height;
            break;
            
        case UIInterfaceOrientationPortraitUpsideDown:
            begin.origin.x = viewSize.width - (begin.origin.x + begin.size.width);
            end.origin.x = viewSize.width - (end.origin.x + end.size.width);
            break;
            
        case UIInterfaceOrientationLandscapeLeft:
            std::swap(begin.size.width, begin.size.height);
            std::swap(end.size.width, end.size.height);
            std::swap(viewSize.width, viewSize.height);
            
            tmp = begin.origin.x;
            begin.origin.x = begin.origin.y;
            begin.origin.y = viewSize.height - tmp - begin.size.height;
            tmp = end.origin.x;
            end.origin.x = end.origin.y;
            end.origin.y = viewSize.height - tmp - end.size.height;
            break;
            
        case UIInterfaceOrientationLandscapeRight:
            std::swap(begin.size.width, begin.size.height);
            std::swap(end.size.width, end.size.height);
            std::swap(viewSize.width, viewSize.height);
            
            tmp = begin.origin.x;
            begin.origin.x = begin.origin.y;
            begin.origin.y = tmp;
            tmp = end.origin.x;
            end.origin.x = end.origin.y;
            end.origin.y = tmp;
            break;
            
        default:
            break;
    }

    auto glview = cocos2d::Director::getInstance()->getOpenGLView();
    float scaleX = glview->getScaleX();
    float scaleY = glview->getScaleY();
    
    // Convert to pixel coordinate
    begin = CGRectApplyAffineTransform(begin, CGAffineTransformScale(CGAffineTransformIdentity, self.contentScaleFactor, self.contentScaleFactor));
    end = CGRectApplyAffineTransform(end, CGAffineTransformScale(CGAffineTransformIdentity, self.contentScaleFactor, self.contentScaleFactor));
    
    float offestY = glview->getViewPortRect().origin.y;
    if (offestY < 0.0f)
    {
        begin.origin.y += offestY;
        begin.size.height -= offestY;
        end.size.height -= offestY;
    }
    
    // Convert to design coordinate
    begin = CGRectApplyAffineTransform(begin, CGAffineTransformScale(CGAffineTransformIdentity, 1.0f/scaleX, 1.0f/scaleY));
    end = CGRectApplyAffineTransform(end, CGAffineTransformScale(CGAffineTransformIdentity, 1.0f/scaleX, 1.0f/scaleY));

    
    cocos2d::IMEKeyboardNotificationInfo notiInfo;
    notiInfo.begin = cocos2d::Rect(begin.origin.x,
                                     begin.origin.y,
                                     begin.size.width,
                                     begin.size.height);
    notiInfo.end = cocos2d::Rect(end.origin.x,
                                   end.origin.y,
                                   end.size.width,
                                   end.size.height);
    notiInfo.duration = (float)aniDuration;
    
    cocos2d::IMEDispatcher* dispatcher = cocos2d::IMEDispatcher::sharedDispatcher();
    if (UIKeyboardWillShowNotification == type)
    {
        dispatcher->dispatchKeyboardWillShow(notiInfo);
    }
    else if (UIKeyboardDidShowNotification == type)
    {
        self.isKeyboardShown = YES;
        dispatcher->dispatchKeyboardDidShow(notiInfo);
    }
    else if (UIKeyboardWillHideNotification == type)
    {
        dispatcher->dispatchKeyboardWillHide(notiInfo);
    }
    else if (UIKeyboardDidHideNotification == type)
    {
        self.isKeyboardShown = NO;
        dispatcher->dispatchKeyboardDidHide(notiInfo);
    }
}

// Close the keyboard opened by EditBox
-(void) closeKeyboardOpenedByEditBox
{
    NSArray *subviews = self.subviews;
    
    for(UIView* view in subviews)
    {
        if([view isKindOfClass:NSClassFromString(@"UITextView")] ||
           [view isKindOfClass:NSClassFromString(@"UITextField")])
        {
            if ([view isFirstResponder])
            {
                [view resignFirstResponder];
                return;
            }
        }
    }
}

@end