IAPDemo/Libraries/cocos2d/cocos/platform/ios/CCGLViewImpl-ios.mm

/****************************************************************************
 Copyright (c) 2010-2012 cocos2d-x.org
 Copyright (c) 2013-2017 Chukong Technologies Inc.

 http://www.cocos2d-x.org

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 all copies or substantial portions of the Software.

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#include "platform/CCPlatformConfig.h"
#if CC_TARGET_PLATFORM == CC_PLATFORM_IOS

#import <UIKit/UIKit.h>

#include "platform/ios/CCEAGLView-ios.h"
#include "platform/ios/CCDirectorCaller-ios.h"
#include "platform/ios/CCGLViewImpl-ios.h"
#include "base/CCTouch.h"
#include "base/CCDirector.h"

NS_CC_BEGIN

void* GLViewImpl::_pixelFormat = kEAGLColorFormatRGB565;
int GLViewImpl::_depthFormat = GL_DEPTH_COMPONENT16;
int GLViewImpl::_multisamplingCount = 0;

GLViewImpl* GLViewImpl::createWithEAGLView(void *eaglview)
{
    auto ret = new (std::nothrow) GLViewImpl;
    if(ret && ret->initWithEAGLView(eaglview)) {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

GLViewImpl* GLViewImpl::create(const std::string& viewName)
{
    auto ret = new (std::nothrow) GLViewImpl;
    if(ret && ret->initWithFullScreen(viewName)) {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

GLViewImpl* GLViewImpl::createWithRect(const std::string& viewName, const Rect& rect, float frameZoomFactor)
{
    auto ret = new (std::nothrow) GLViewImpl;
    if(ret && ret->initWithRect(viewName, rect, frameZoomFactor)) {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

GLViewImpl* GLViewImpl::createWithFullScreen(const std::string& viewName)
{
    auto ret = new (std::nothrow) GLViewImpl();
    if(ret && ret->initWithFullScreen(viewName)) {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

void GLViewImpl::convertAttrs()
{
    if(_glContextAttrs.redBits==8 && _glContextAttrs.greenBits==8 && _glContextAttrs.blueBits==8 && _glContextAttrs.alphaBits==8)
    {
        _pixelFormat = kEAGLColorFormatRGBA8;
    } else if (_glContextAttrs.redBits==5 && _glContextAttrs.greenBits==6 && _glContextAttrs.blueBits==5 && _glContextAttrs.alphaBits==0)
    {
        _pixelFormat = kEAGLColorFormatRGB565;
    } else
    {
        CCASSERT(0, "Unsupported render buffer pixel format. Using default");
    }

    if(_glContextAttrs.depthBits==24 && _glContextAttrs.stencilBits==8)
    {
        _depthFormat = GL_DEPTH24_STENCIL8_OES;
    } else if (_glContextAttrs.depthBits==0 && _glContextAttrs.stencilBits==0)
    {
        _depthFormat = 0;
    } else
    {
        CCASSERT(0, "Unsupported format for depth and stencil buffers. Using default");
    }
    
    _multisamplingCount = _glContextAttrs.multisamplingCount;
}

GLViewImpl::GLViewImpl()
{
}

GLViewImpl::~GLViewImpl()
{
    //CCEAGLView *glview = (CCEAGLView*) _eaglview;
    //[glview release];
}

bool GLViewImpl::initWithEAGLView(void *eaglview)
{
    _eaglview = eaglview;
    CCEAGLView *glview = (CCEAGLView*) _eaglview;

    _screenSize.width = _designResolutionSize.width = [glview getWidth];
    _screenSize.height = _designResolutionSize.height = [glview getHeight];
//    _scaleX = _scaleY = [glview contentScaleFactor];

    return true;
}

bool GLViewImpl::initWithRect(const std::string& viewName, const Rect& rect, float frameZoomFactor)
{
    CGRect r = CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
    convertAttrs();
    CCEAGLView *eaglview = [CCEAGLView viewWithFrame: r
                                       pixelFormat: (NSString*)_pixelFormat
                                       depthFormat: _depthFormat
                                preserveBackbuffer: NO
                                        sharegroup: nil
                                     multiSampling: NO
                                   numberOfSamples: 0];

    // Not available on tvOS
#if !defined(CC_TARGET_OS_TVOS)
    [eaglview setMultipleTouchEnabled:YES];
#endif

    _screenSize.width = _designResolutionSize.width = [eaglview getWidth];
    _screenSize.height = _designResolutionSize.height = [eaglview getHeight];
//    _scaleX = _scaleY = [eaglview contentScaleFactor];

    _eaglview = eaglview;

    return true;
}

bool GLViewImpl::initWithFullScreen(const std::string& viewName)
{
    CGRect rect = [[UIScreen mainScreen] bounds];
    Rect r;
    r.origin.x = rect.origin.x;
    r.origin.y = rect.origin.y;
    r.size.width = rect.size.width;
    r.size.height = rect.size.height;

    return initWithRect(viewName, r, 1);
}

bool GLViewImpl::isOpenGLReady()
{
    return _eaglview != nullptr;
}

bool GLViewImpl::setContentScaleFactor(float contentScaleFactor)
{
    CC_ASSERT(_resolutionPolicy == ResolutionPolicy::UNKNOWN); // cannot enable retina mode
    _scaleX = _scaleY = contentScaleFactor;

    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;
    [eaglview setNeedsLayout];

    return true;
}

float GLViewImpl::getContentScaleFactor() const
{
    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;

    float scaleFactor = [eaglview contentScaleFactor];

//    CCASSERT(scaleFactor == _scaleX == _scaleY, "Logic error in GLView::getContentScaleFactor");

    return scaleFactor;
}

void GLViewImpl::end()
{
    [CCDirectorCaller destroy];

    // destroy EAGLView
    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;

    [eaglview removeFromSuperview];
    //[eaglview release];
    release();
}


void GLViewImpl::swapBuffers()
{
    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;
    [eaglview swapBuffers];
}

void GLViewImpl::setIMEKeyboardState(bool open)
{
    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;

    if (open)
    {
        [eaglview becomeFirstResponder];
    }
    else
    {
        [eaglview resignFirstResponder];
    }
}

Rect GLViewImpl::getSafeAreaRect() const
{
    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000
    float version = [[UIDevice currentDevice].systemVersion floatValue];
    if (version >= 11.0f)
    {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wpartial-availability"
        UIEdgeInsets safeAreaInsets = eaglview.safeAreaInsets;
#pragma clang diagnostic pop

        // Multiply contentScaleFactor since safeAreaInsets return points.
        safeAreaInsets.left *= eaglview.contentScaleFactor;
        safeAreaInsets.right *= eaglview.contentScaleFactor;
        safeAreaInsets.top *= eaglview.contentScaleFactor;
        safeAreaInsets.bottom *= eaglview.contentScaleFactor;

        // Get leftBottom and rightTop point in UI coordinates
        Vec2 leftBottom = Vec2(safeAreaInsets.left, _screenSize.height - safeAreaInsets.bottom);
        Vec2 rightTop = Vec2(_screenSize.width - safeAreaInsets.right, safeAreaInsets.top);

        // Convert a point from UI coordinates to which in design resolution coordinate.
        leftBottom.x = (leftBottom.x - _viewPortRect.origin.x) / _scaleX,
        leftBottom.y = (leftBottom.y - _viewPortRect.origin.y) / _scaleY;
        rightTop.x = (rightTop.x - _viewPortRect.origin.x) / _scaleX,
        rightTop.y = (rightTop.y - _viewPortRect.origin.y) / _scaleY;

        // Adjust points to make them inside design resolution
        leftBottom.x = MAX(leftBottom.x, 0);
        leftBottom.y = MIN(leftBottom.y, _designResolutionSize.height);
        rightTop.x = MIN(rightTop.x, _designResolutionSize.width);
        rightTop.y = MAX(rightTop.y, 0);

        // Convert to GL coordinates
        leftBottom = Director::getInstance()->convertToGL(leftBottom);
        rightTop = Director::getInstance()->convertToGL(rightTop);

        return Rect(leftBottom.x, leftBottom.y, rightTop.x - leftBottom.x, rightTop.y - leftBottom.y);
    }
#endif

    // If running on iOS devices lower than 11.0, return visiable rect instead.
    return GLView::getSafeAreaRect();
}

NS_CC_END

#endif // CC_PLATFORM_IOS