version and size info for QR code.

QRCode/QR/UIImage+MDQRCode.h

@@ -33,6 +33,6 @@
  */
 + (UIImage *)mdQRCodeForString:(NSString *)qrString size:(CGFloat)size;
 + (UIImage *)mdQRCodeForString:(NSString *)qrString size:(CGFloat)size fillColor:(UIColor *)fillColor;
-
++ (UIImage *)mdQRCodeForString:(NSString *)qrString size:(CGFloat)imageSize fillColor:(UIColor *)fillColor :(int *)width :(int *)version;
 
 @end

QRCode/QR/UIImage+MDQRCode.m

@@ -106,4 +106,58 @@ + (UIImage *)mdQRCodeForString:(NSString *)qrString size:(CGFloat)imageSize fill
 	return qrImage;
 }
 
++ (UIImage *)mdQRCodeForString:(NSString *)qrString size:(CGFloat)imageSize fillColor:(UIColor *)fillColor :(int *)width :(int *)version
+{
+    if (0 == [qrString length]) {
+        return nil;
+    }
+
+    // generate QR
+    QRcode *code = QRcode_encodeString([qrString UTF8String], 0, QR_ECLEVEL_L, QR_MODE_8, 1);
+    if (!code) {
+        return nil;
+    }
+
+    CGFloat size = imageSize * [[UIScreen mainScreen] scale];
+
+    if(width)
+    {
+    *width = code->width;
+    }
+    if(version)
+    {
+    *version = code->version;
+    }
+
+    if (code->width > size) {
+        printf("Image size is less than qr code size (%d)\n", code->width);
+        return nil;
+    }
+
+    // create context
+    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+
+    // The constants for specifying the alpha channel information are declared with the CGImageAlphaInfo type but can be passed to this parameter safely.
+
+    CGContextRef ctx = CGBitmapContextCreate(0, size, size, 8, size * 4, colorSpace, (CGBitmapInfo)kCGImageAlphaPremultipliedLast);
+
+    CGAffineTransform translateTransform = CGAffineTransformMakeTranslation(0, -size);
+    CGAffineTransform scaleTransform = CGAffineTransformMakeScale(1, -1);
+    CGContextConcatCTM(ctx, CGAffineTransformConcat(translateTransform, scaleTransform));
+
+    // draw QR on this context
+    [self mdDrawQRCode:code context:ctx size:size fillColor:fillColor];
+
+    // get image
+    CGImageRef qrCGImage = CGBitmapContextCreateImage(ctx);
+    UIImage * qrImage = [UIImage imageWithCGImage:qrCGImage];
+
+    // free memory
+    CGContextRelease(ctx);
+    CGImageRelease(qrCGImage);
+    CGColorSpaceRelease(colorSpace);
+    QRcode_free(code);
+    return qrImage;
+}
+
 @end

QRCodeEncoder.podspec

@@ -0,0 +1,15 @@
+Pod::Spec.new do |s|
+    s.name            = 'QRCodeEncoder'
+    s.version         = '1.0'
+    s.platform        = :ios, '7.0'
+    s.license         = { :type => 'MIT', :file => 'LICENSE' }
+    s.summary         = 'QRCode Encoder For Your iOS app.'
+    s.homepage        = 'https://github.com/Notan/ios-qr-code-encoder'
+    s.authors         = { 'Alex Zarochintsev' => '[email protected]' }
+    s.source          = { :git => 'https://github.com/Notan/ios-qr-code-encoder', :tag => "1.0" }
+
+    s.source_files = 'QRCode/QR/**/*.{h,m,c}'
+
+    s.framework       = 'Foundation', 'UIKit'
+    s.requires_arc    = true
+end