//*****************************************************************************
//      絵文字を一画面分保存
//*****************************************************************************
void SaveEmoji(const int page) {
    CGRect ViewRect = [[UIScreen mainScreen] bounds] ;
    BOOL HighReso = [UIScreen mainScreen].scale == 1.f ? NO : YES ;
    if(!HighReso) {
        ViewRect.size.width  /= 2.f ;
        ViewRect.size.height /= 2.f ;
    }

    UIGraphicsBeginImageContext(ViewRect.size) ;

    DrawEmoji(page) ;                           // 絵文字を描画

    CGImageRef ImgRef = UIGraphicsGetImageFromCurrentImageContext().CGImage ;
    CFDataRef DataRef = CGDataProviderCopyData(CGImageGetDataProvider(ImgRef)) ;
    u08 *data = (u08 *)CFDataGetBytePtr(DataRef) ;
                                                // αが適用された RGB 値を元に戻す
    for(int j = 0 ; j < CGImageGetWidth(ImgRef) * CGImageGetHeight(ImgRef) ; ++ j) {
        u08 alpha = data[j * 4 + 3] ;
        if(alpha) {
            data[j * 4 + 0] = min(data[j * 4 + 0] * 255 / alpha,255) ;
            data[j * 4 + 1] = min(data[j * 4 + 1] * 255 / alpha,255) ;
            data[j * 4 + 2] = min(data[j * 4 + 2] * 255 / alpha,255) ;
        }
    }

    CGDataProviderRef DataProv = CGDataProviderCreateWithCFData(
        CFDataCreate(0,data,CFDataGetLength(DataRef))
    ) ;

    CGImageRef NewImg = CGImageCreate(
        CGImageGetWidth(ImgRef),
        CGImageGetHeight(ImgRef),
        CGImageGetBitsPerComponent(ImgRef),
        CGImageGetBitsPerPixel(ImgRef),
        CGImageGetBytesPerRow(ImgRef),
        CGImageGetColorSpace(ImgRef),
        CGImageGetBitmapInfo(ImgRef),
        DataProv,
        0,
        CGImageGetShouldInterpolate(ImgRef),
        CGImageGetRenderingIntent(ImgRef)
    ) ;
    UIImage *SnapShot = [[UIImage alloc] initWithCGImage:NewImg] ;

    char filename[260] ;                        // 画像を tga で保存
    sprintf(filename,"/Documents/emoji%d_%d.tga",HighReso ? 4 : 3,page) ;
    ImageSaveTag(filename,SnapShot) ;
    [SnapShot release] ;

    UIGraphicsEndImageContext() ;
}