From d19a1012a4571200214e7e13b2673a22bdd05e6a Mon Sep 17 00:00:00 2001
From: Ricardo Quesada <ricardoquesada@gmail.com>
Date: Thu, 30 Jan 2014 15:11:37 -0800
Subject: [PATCH] Adds the possibility to create EAGLView with an EAGLView

---
 cocos/2d/platform/ios/CCEGLView.h  |  9 ++-
 cocos/2d/platform/ios/CCEGLView.mm | 97 +++++++++++++++++++++---------
 2 files changed, 77 insertions(+), 29 deletions(-)

diff --git a/cocos/2d/platform/ios/CCEGLView.h b/cocos/2d/platform/ios/CCEGLView.h
index 70e9575608..8001cd0582 100644
--- a/cocos/2d/platform/ios/CCEGLView.h
+++ b/cocos/2d/platform/ios/CCEGLView.h
@@ -45,7 +45,11 @@ public:
     static EGLView* createWithSize(const std::string& viewName, Size size, float frameZoomFactor = 1.0f);
     static EGLView* createWithFullScreen(const std::string& viewName);
 
-    virtual bool setContentScaleFactor(float contentScaleFactor);
+    bool setContentScaleFactor(float contentScaleFactor);
+    float getContentScaleFactor() const;
+    bool isRetinaDisplay() const { return getContentScaleFactor() == 2.0; }
+
+    void* getEAGLView() const { return _eaglview; }
 
     // overrides
     virtual bool isOpenGLReady() override;
@@ -57,10 +61,11 @@ protected:
     EGLView();
     virtual ~EGLView();
 
+    bool initWithEAGLView(void* eaglview);
     bool initWithSize(const std::string& viewName, Size size, float frameZoomFactor);
     bool initWithFullScreen(const std::string& viewName);
 
-    void *_glview;
+    void *_eaglview;
 };
 
 NS_CC_END
diff --git a/cocos/2d/platform/ios/CCEGLView.mm b/cocos/2d/platform/ios/CCEGLView.mm
index 520f4fe30d..ea4fc46f98 100644
--- a/cocos/2d/platform/ios/CCEGLView.mm
+++ b/cocos/2d/platform/ios/CCEGLView.mm
@@ -27,6 +27,8 @@
 
 #if CC_TARGET_PLATFORM == CC_PLATFORM_IOS
 
+#import <UIKit/UIKit.h>
+
 #include "CCEAGLView.h"
 #include "CCDirectorCaller.h"
 #include "CCEGLView.h"
@@ -35,6 +37,17 @@
 
 NS_CC_BEGIN
 
+EGLView* EGLView::createWithEAGLView(void *eaglview)
+{
+    auto ret = new EGLView;
+    if(ret && ret->initWithEAGLView(eaglview)) {
+        ret->autorelease();
+        return ret;
+    }
+
+    return nullptr;
+}
+
 EGLView* EGLView::create(const std::string& viewName)
 {
     auto ret = new EGLView;
@@ -70,41 +83,60 @@ EGLView* EGLView::createWithFullScreen(const std::string& viewName)
 
 EGLView::EGLView()
 {
-//    CGRect r = CGRectMake(0,0,300,300);
-//    CCEAGLView *glView = [CCEAGLView viewWithFrame:r
-//                                         pixelFormat: kEAGLColorFormatRGB565
-//                                         depthFormat: GL_DEPTH24_STENCIL8_OES
-//                                  preserveBackbuffer: NO
-//                                          sharegroup: nil
-//                                       multiSampling: NO
-//                                     numberOfSamples: 0];
-//    [__glView setMultipleTouchEnabled:YES];
-//
-//    _screenSize.width = _designResolutionSize.width = [glview getWidth];
-//    _screenSize.height = _designResolutionSize.height = [glview getHeight];
-//
-//    _glview = glview;
 }
 
 EGLView::~EGLView()
 {
-    CCEAGLView *glview = (CCEAGLView*) _glview;
+    CCEAGLView *glview = (CCEAGLView*) _eaglview;
     [glview release];
 }
 
+bool EGLView::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 EGLView::initWithSize(const std::string& viewName, Size size, float frameZoomFactor)
 {
+    CGRect r = CGRectMake(0,0,size.width, size.height);
+    CCEAGLView *eaglview = [CCEAGLView viewWithFrame: r
+                                       pixelFormat: kEAGLColorFormatRGB565
+                                       depthFormat: GL_DEPTH24_STENCIL8_OES
+                                preserveBackbuffer: NO
+                                        sharegroup: nil
+                                     multiSampling: NO
+                                   numberOfSamples: 0];
+    [eaglview setMultipleTouchEnabled:YES];
+
+    _screenSize.width = _designResolutionSize.width = [eaglview getWidth];
+    _screenSize.height = _designResolutionSize.height = [eaglview getHeight];
+//    _scaleX = _scaleY = [eaglview contentScaleFactor];
+
+    _eaglview = eaglview;
+
     return true;
 }
 
 bool EGLView::initWithFullScreen(const std::string& viewName)
 {
-    return true;
+    CGRect rect = [[UIScreen mainScreen] bounds];
+    Size size;
+    size.width = rect.size.width;
+    size.height = rect.size.height;
+
+    return initWithSize(viewName, size, 1);
 }
 
 bool EGLView::isOpenGLReady()
 {
-    return _glview != nullptr;
+    return _eaglview != nullptr;
 }
 
 bool EGLView::setContentScaleFactor(float contentScaleFactor)
@@ -112,41 +144,52 @@ bool EGLView::setContentScaleFactor(float contentScaleFactor)
     CC_ASSERT(_resolutionPolicy == ResolutionPolicy::UNKNOWN); // cannot enable retina mode
     _scaleX = _scaleY = contentScaleFactor;
 
-    CCEAGLView *glview = (CCEAGLView*) _glview;
-    [glview setNeedsLayout];
+    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;
+    [eaglview setNeedsLayout];
 
     return true;
 }
 
+float EGLView::getContentScaleFactor() const
+{
+    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;
+
+    float scaleFactor = [eaglview contentScaleFactor];
+
+//    CCASSERT(scaleFactor == _scaleX == _scaleY, "Logic error in EGLView::getContentScaleFactor");
+
+    return scaleFactor;
+}
+
 void EGLView::end()
 {
     [CCDirectorCaller destroy];
     
     // destroy EAGLView
-    CCEAGLView *glview = (CCEAGLView*) _glview;
+    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;
 
-    [glview removeFromSuperview];
-    [glview release];
+    [eaglview removeFromSuperview];
+    [eaglview release];
 }
 
 
 void EGLView::swapBuffers()
 {
-    CCEAGLView *glview = (CCEAGLView*) _glview;
-    [glview swapBuffers];
+    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;
+    [eaglview swapBuffers];
 }
 
 void EGLView::setIMEKeyboardState(bool open)
 {
-    CCEAGLView *glview = (CCEAGLView*) _glview;
+    CCEAGLView *eaglview = (CCEAGLView*) _eaglview;
 
     if (open)
     {
-        [glview becomeFirstResponder];
+        [eaglview becomeFirstResponder];
     }
     else
     {
-        [glview resignFirstResponder];
+        [eaglview resignFirstResponder];
     }
 }