[iOS] fix: enableRetina() and setDesignResolutionSize() can not be used simultaneously. FROM kunlun.com, THANKS

cocos2dx/platform/ios/EAGLView.h

@@ -87,6 +87,7 @@ Copyright (C) 2008 Apple Inc. All Rights Reserved.
     BOOL                    preserveBackbuffer_;
 
     CGSize                    size_;
+    CGFloat                   designContentScaleFactor_;
     BOOL                    discardFramebufferSupported_;
 
     //fsaa addition
@@ -142,6 +143,9 @@ Copyright (C) 2008 Apple Inc. All Rights Reserved.
 
 @property(nonatomic,readwrite) BOOL multiSampling;
 
+/** call from AppController.mm */
+-(void) setDesignContentScaleFactor:(CGFloat)scale;
+-(CGFloat) getDesignContentScaleFactor;
 
 /** EAGLView uses double-buffer. This method swaps the buffers */
 -(void) swapBuffers;

cocos2dx/platform/ios/EAGLView.mm

@@ -134,6 +134,7 @@ static EAGLView *view = 0;
 {
     if((self = [super initWithFrame:frame]))
     {
+        designContentScaleFactor_ = 1.0;
         isUseUITextField = YES;
         pixelformat_ = format;
         depthFormat_ = depth;
@@ -162,6 +163,7 @@ static EAGLView *view = 0;
         
         CAEAGLLayer*            eaglLayer = (CAEAGLLayer*)[self layer];
         
+        designContentScaleFactor_ = 1.0;
         pixelformat_ = kEAGLColorFormatRGB565;
         depthFormat_ = 0; // GL_DEPTH_COMPONENT24_OES;
         multiSampling_= NO;
@@ -200,15 +202,27 @@ static EAGLView *view = 0;
 -(int) getWidth
 {
     CGSize bound = [self bounds].size;
-    return bound.width;
+    return bound.width * designContentScaleFactor_;
 }
 
 -(int) getHeight
 {
     CGSize bound = [self bounds].size;
-    return bound.height;
+    return bound.height * designContentScaleFactor_;
 }
 
+-(void) setDesignContentScaleFactor:(CGFloat)scale
+{
+    if ([self respondsToSelector:@selector(setContentScaleFactor:)]) {
+        [self setContentScaleFactor:scale]; // if val == 2.0, enable retina display
+        designContentScaleFactor_ = scale;
+    }
+}
+
+-(CGFloat) getDesignContentScaleFactor
+{
+    return designContentScaleFactor_;
+}
 
 -(BOOL) setupSurfaceWithSharegroup:(EAGLSharegroup*)sharegroup
 {
@@ -401,8 +415,8 @@ static EAGLView *view = 0;
     int i = 0;
     for (UITouch *touch in touches) {
         ids[i] = (int)touch;
-        xs[i] = [touch locationInView: [touch view]].x;
-        ys[i] = [touch locationInView: [touch view]].y;
+        xs[i] = [touch locationInView: [touch view]].x * designContentScaleFactor_;
+        ys[i] = [touch locationInView: [touch view]].y * designContentScaleFactor_;
         ++i;
     }
     cocos2d::CCEGLView::sharedOpenGLView()->handleTouchesBegin(i, ids, xs, ys);
@@ -421,8 +435,8 @@ static EAGLView *view = 0;
     int i = 0;
     for (UITouch *touch in touches) {
         ids[i] = (int)touch;
-        xs[i] = [touch locationInView: [touch view]].x;
-        ys[i] = [touch locationInView: [touch view]].y;
+        xs[i] = [touch locationInView: [touch view]].x * designContentScaleFactor_;
+        ys[i] = [touch locationInView: [touch view]].y * designContentScaleFactor_;
         ++i;
     }
     cocos2d::CCEGLView::sharedOpenGLView()->handleTouchesMove(i, ids, xs, ys);
@@ -442,8 +456,8 @@ static EAGLView *view = 0;
     int i = 0;
     for (UITouch *touch in touches) {
         ids[i] = (int)touch;
-        xs[i] = [touch locationInView: [touch view]].x;
-        ys[i] = [touch locationInView: [touch view]].y;
+        xs[i] = [touch locationInView: [touch view]].x * designContentScaleFactor_;
+        ys[i] = [touch locationInView: [touch view]].y * designContentScaleFactor_;
         ++i;
     }
     cocos2d::CCEGLView::sharedOpenGLView()->handleTouchesEnd(i, ids, xs, ys);
@@ -463,8 +477,8 @@ static EAGLView *view = 0;
     int i = 0;
     for (UITouch *touch in touches) {
         ids[i] = (int)touch;
-        xs[i] = [touch locationInView: [touch view]].x;
-        ys[i] = [touch locationInView: [touch view]].y;
+        xs[i] = [touch locationInView: [touch view]].x * designContentScaleFactor_;
+        ys[i] = [touch locationInView: [touch view]].y * designContentScaleFactor_;
         ++i;
     }
     cocos2d::CCEGLView::sharedOpenGLView()->handleTouchesCancel(i, ids, xs, ys);
@@ -786,6 +800,15 @@ static EAGLView *view = 0;
             break;
     }
     
+    begin.origin.x *= designContentScaleFactor_;
+    begin.origin.y *= designContentScaleFactor_;
+    begin.size.width *= designContentScaleFactor_;
+    begin.size.height *= designContentScaleFactor_;
+    end.origin.x *= designContentScaleFactor_;
+    end.origin.y *= designContentScaleFactor_;
+    end.size.width *= designContentScaleFactor_;
+    end.size.height *= designContentScaleFactor_;
+
     cocos2d::CCIMEKeyboardNotificationInfo notiInfo;
     notiInfo.begin = cocos2d::CCRect(begin.origin.x,
                                      begin.origin.y,
@@ -859,6 +882,7 @@ static EAGLView *view = 0;
     // NSLog(@"[animation] dis = %f\n", dis);
     
     if (dis < 0.0f) dis = 0.0f;
+    dis /= designContentScaleFactor_;
 
     if (!cocos2d::CCEGLView::sharedOpenGLView()->isRetinaEnabled())
     {