CODEWITHSUNDEEP
iphoneioscocos2d-iphone
Kanan Vora
Kanan Vora

Reputation: 2122

Creating a CCLayer with Transparant background color

I am creating an iPhone application using both UIKit and cocos2d. Now, in one of my ViewControllers, I am adding a HelloWorldLayer as a subview. Which is successfully added.

Now this layer is being added with a black background color. I want its background color to be clearColor, precisely, I want it to be transparant, so that I can view the contents in my ViewController except for the contents in the HelloWorldLayer.

I know how to change the CCLayer background color. I am using ccc4(r, g, b, a) for it.

Here id my code:

-(id) init
{
    // always call "super" init
    // Apple recommends to re-assign "self" with the "super's" return value
    if( (self=[super initWithColor:ccc4(0, 0, 0, 128)]) ) {
        CGSize windowSize = [[CCDirector sharedDirector] winSize];
        CCSprite *imgRoof;
        imgRoof = [CCSprite spriteWithFile:@"Tops.png"];
        imgRoof.position = ccp(windowSize.width/2,windowSize.height/2);
        [self addChild:imgRoof];

        CCAction* action = [CCBlink actionWithDuration:20 blinks:20];
        [imgRoof runAction:action];

    }
    return self;
}

I just want to know the color code for clearColor for ccc4(). Can any one help me please, I am really stuck.

Thanks a lot in advance!!!

Upvotes: 0

Views: 3188

Answers (4)

Kanan Vora
Kanan Vora

Reputation: 2122

Finally I didn't find a proper answer to this question, after looking for many docs and searching for days in google, found no proper solution, and no color code is available for clearColor for ccc4 so I used a patch for my application.

I am setting the the same image as a background CCSprite to my HelloWorldLayer, which I am using in the ViewController as a background on which I m adding the HelloWorldLayer scene, so that one don't see the black background, and even user presumes that the behind ViewController is visible apart from the HelloWorldLayer contents.

This is a solution particularly for my application. For other situations, I can't say. If anyone finds any solution to this, please let me know.

Thanks!!!

Upvotes: 0

Deepak
Deepak

Reputation: 348

Try this, it works for me.

UIColor *color = [UIColor clearColor];
CGColorRef layerBackgroundColor = [color CGColor];
[subLayer setBackgroundColor:layerBackgroundColor];

Upvotes: 0

Wolverine
Wolverine

Reputation: 4329

Try This...

 CCLayer *pauseLayer;

 CGSize size = [[CCDirector sharedDirector] winSize];

 pauseLayer = [CCLayerColor layerWithColor: ccc4(0, 0, 0, 128) width: size.width height: size.height];

 pauseLayer.position = CGPointZero;

 [self addChild: pauseLayer];

E.X for using ccc4

layerWithColor:ccc4(Red, Green, Blue, Opacity)

The first three numbers are "RGB" colors and the last number is opacity. Each can have a value in range between 0 and 255.

Upvotes: 0

Lithu T.V
Lithu T.V

Reputation: 20021

yourView.layer.backgroundColor=[[UIColor clearColor]CGColor];

will do the job for you

Dont forgot 

#import <QuartzCore/QuartzCore.h>

EDIT

CCLayerColor* colorLayer = [CCLayerColor layerWithColor:ccc4(0, 0, 0, 128)];
[self addChild:colorLayer z:0];

The first three numbers are "RGB" colors and the last number is opacity. Each can have a value in range between 0 and 255.

Upvotes: 2

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