How to Create a Sprite in the jiugongge stretch mode

How to Create a Sprite in the jiugongge stretch mode
In many cases, the four corners of a Sprite must be kept unchanged, such as chat bubbles. The following is an encapsulated BubbleSprite class derived from CCSprite.
Class implementation method:. h file

#import <Foundation/Foundation.h>#import "cocos2d.h"@interface BubbleSprite : CCSprite{    }+(id)spriteWithFile:(NSString*)file size:(CGSize)size leftCap:(NSInteger)leftcap topCap:(NSInteger)topcap;-(id)initWithFile:(NSString*)file size:(CGSize)size leftCap:(NSInteger)leftcap topCap:(NSInteger)topcap;@end

. M file:

#import "BubbleSprite.h"@implementation BubbleSprite+(id)spriteWithFile:(NSString*)file size:(CGSize)size leftCap:(NSInteger)leftcap topCap:(NSInteger)topcap{    return [[[self alloc] initWithFile:file size:size leftCap:leftcap topCap:topcap] autorelease];}-(id)initWithFile:(NSString*)file size:(CGSize)size leftCap:(NSInteger)leftcap topCap:(NSInteger)topcap{    UIImage* image = [UIImage imageNamed:file];    CGImageRef base = image.CGImage;     CGContextRef context = CGBitmapContextCreate(nil,                                                 size.width,                                                  size.height,                                                  CGImageGetBitsPerComponent(base),                                                  4 * size.width,                                                 CGImageGetColorSpace(base),                                                  kCGImageAlphaPremultipliedLast | kCGBitmapByteOrderDefault);            float BASE_COL_X[] = {0,leftcap,leftcap + 1};    float BASE_ROW_Y[] = {0,topcap,topcap +1};    float BASE_COL_WIDTH[] = {leftcap,1,image.size.width - leftcap -1};    float BASE_ROW_HEIGHT[] = {topcap,1,image.size.height - topcap -1};        float TARGET_COL_WIDTH[] = {BASE_COL_WIDTH[0], size.width - BASE_COL_WIDTH[0] - BASE_COL_WIDTH[2], BASE_COL_WIDTH[2]};       float TARGET_ROW_HEIGHT[] = {BASE_ROW_HEIGHT[0], size.height - BASE_ROW_HEIGHT[0] - BASE_ROW_HEIGHT[2], BASE_ROW_HEIGHT[2]};        float TARGET_COL_X[] = {0,TARGET_COL_WIDTH[0],TARGET_COL_WIDTH[0]+TARGET_COL_WIDTH[1]};        float TARGET_ROW_Y[] = {size.height - TARGET_ROW_HEIGHT[0],        size.height - TARGET_ROW_HEIGHT[0] - TARGET_ROW_HEIGHT[1],        size.height - TARGET_ROW_HEIGHT[0] - TARGET_ROW_HEIGHT[1] - TARGET_ROW_HEIGHT[2]};//    int  originWidth=image.size.width;//    int  originHeight=image.size.height;//    //    float BASE_COL_X[] = {0,leftcap,(originWidth-leftcap)};//    float BASE_ROW_Y[] = {0,topcap,(originHeight-topcap)};//    float BASE_COL_WIDTH[] = {leftcap,1,leftcap};//    float BASE_ROW_HEIGHT[] = {topcap,1,topcap};////    //    float TARGET_COL_WIDTH[] = {BASE_COL_WIDTH[0], size.width - BASE_COL_WIDTH[0] - BASE_COL_WIDTH[2], BASE_COL_WIDTH[2]};//    //    float TARGET_ROW_HEIGHT[] = {BASE_ROW_HEIGHT[0], size.height - BASE_ROW_HEIGHT[0] - BASE_ROW_HEIGHT[2], BASE_ROW_HEIGHT[2]};//    //    float TARGET_COL_X[] = {0,TARGET_COL_WIDTH[0],size.width-TARGET_COL_WIDTH[0]};//    //    float TARGET_ROW_Y[] = {size.height - TARGET_ROW_HEIGHT[0],TARGET_ROW_HEIGHT[0],0};//            for (int row=0; row<3; row++)     {        for (int col=0; col<3; col++)        {            CGRect source = CGRectMake(BASE_COL_X[col], BASE_ROW_Y[row], BASE_COL_WIDTH[col], BASE_ROW_HEIGHT[row]);                        if (source.origin.x<0)             {                source.origin.x=0;            }            if (source.origin.y<0)             {                source.origin.y=0;            }            if (source.size.width<0)             {                source.size.width=0;            }            if (source.size.height<0)             {                source.size.height=0;            }                        CGRect target = CGRectMake(TARGET_COL_X[col], TARGET_ROW_Y[row], TARGET_COL_WIDTH[col], TARGET_ROW_HEIGHT[row]);                                    if (target.origin.x<0)             {                target.origin.x=0;            }            if (target.origin.y<0)             {                target.origin.y=0;            }            if (target.size.width<0)             {                target.size.width=0;            }            if (target.size.height<0)             {                target.size.height=0;            }                                    CGImageRef ref = CGImageCreateWithImageInRect(base, source);                        if (ref)             {                CGContextDrawImage(context, target, ref);                CFRelease(ref);             }        }    }         CGImageRef final = CGBitmapContextCreateImage(context);     CGContextRelease(context);    return [super initWithCGImage:final key:nil];}@end

This class is called as follows:
CGSize bubbleSize;

Int gap_X =
11.0f; // The width of the left and right sides without stretching

Int gap_Y = 15.0f; // keep the height of the upper and lower sides without stretching

BubbleSize. width + = gap_X * 2;

BubbleSize. height + = gap_Y * 2;

The above is what is passed to the BubbleSprite in non-Retina Mode

Parameters of the spriteWithFile function.

To process the Retina mode in a unified manner, add the following code:

Int RETINA =
1;

If (IS_RETINA =
NO)

{

RETINA =
1;

}

Else

{

RETINA =
2;

}

BubbleSize. width = bubbleSize. width * RETINA;

BubbleSize. height = bubbleSize. height * RETINA;

Gap_X = gap_X * RETINA;

Gap_Y = gap_Y * RETINA;

Last call:

// The image name must be manually processed for both HD and non-HD images, because Cocos cannot automatically recognize the two images.

Char temp [30];

Memset (temp, 0,
30 );

If (retina = 1)

{

Sprintf (temp, "chat_bubble.png ");

}

Else

{

Sprintf (temp, "chat_bubble-hd.png ");

}

Nsstring * nspicname = [nsstring
Stringwithcstring: temp encoding: nsutf8stringencoding];

Bubblesprite * bubblesprite = [bubblesprite
Spritewithfile: nspicname
Size: bubblesize leftcap: gap_x
Topcap: gap_y];