Fix bug #104.

Implement show qrcode by core image generator instead of embed a web view.

ShadowsocksX-NG/SWBQRCodeWindowController.h

@@ -9,9 +9,9 @@
 #import <Cocoa/Cocoa.h>
 #import <WebKit/WebKit.h>
 
-@interface SWBQRCodeWindowController : NSWindowController <WebFrameLoadDelegate>
+@interface SWBQRCodeWindowController : NSWindowController
 
-@property (nonatomic, strong) IBOutlet WebView *webView;
 @property (nonatomic, copy) NSString *qrCode;
+@property (nonatomic, weak) NSImageView *imageView;
 
 @end

ShadowsocksX-NG/SWBQRCodeWindowController.m

@@ -7,6 +7,7 @@
 //
 
 #import "SWBQRCodeWindowController.h"
+@import CoreImage;
 
 @interface SWBQRCodeWindowController ()
 
@@ -18,18 +19,56 @@
     [super windowDidLoad];
     
     // Implement this method to handle any initialization after your window controller's window has been loaded from its nib file.
-    [self.webView.mainFrame loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"qrcode" withExtension:@"htm"]]];
-    self.webView.frameLoadDelegate = self;
+    [self setQRCode:self.qrCode];
 }
 
--(void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame {
-    if (self.qrCode) {
-        [self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"genCode('%@')", _qrCode]];
-    }
+- (void)setQRCode:(NSString*) qrCode {
+    CGImageRef cgImgRef = [self createQRImageForString:qrCode size:CGSizeMake(250, 250)];
+    
+    NSImage *image = [[NSImage alloc]initWithCGImage:cgImgRef size:CGSizeMake(250, 250)];
+    self.imageView.image = image;
 }
 
--(void)dealloc {
-    self.webView.frameLoadDelegate = nil;
+- (CGImageRef)createQRImageForString:(NSString *)string size:(CGSize)size {
+    // Setup the QR filter with our string
+    CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
+    [filter setDefaults];
+    
+    NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
+    [filter setValue:data forKey:@"inputMessage"];
+    CIImage *image = [filter valueForKey:@"outputImage"];
+    
+    // Calculate the size of the generated image and the scale for the desired image size
+    CGRect extent = CGRectIntegral(image.extent);
+    CGFloat scale = MIN(size.width / CGRectGetWidth(extent), size.height / CGRectGetHeight(extent));
+    
+    // Since CoreImage nicely interpolates, we need to create a bitmap image that we'll draw into
+    // a bitmap context at the desired size;
+    size_t width = CGRectGetWidth(extent) * scale;
+    size_t height = CGRectGetHeight(extent) * scale;
+    CGColorSpaceRef cs = CGColorSpaceCreateDeviceGray();
+    CGContextRef bitmapRef = CGBitmapContextCreate(nil, width, height, 8, 0, cs, (CGBitmapInfo)kCGImageAlphaNone);
+    
+#if TARGET_OS_IPHONE
+    CIContext *context = [CIContext contextWithOptions:nil];
+#else
+    CIContext *context = [CIContext contextWithCGContext:bitmapRef options:nil];
+#endif
+    
+    CGImageRef bitmapImage = [context createCGImage:image fromRect:extent];
+    
+    CGContextSetInterpolationQuality(bitmapRef, kCGInterpolationNone);
+    CGContextScaleCTM(bitmapRef, scale, scale);
+    CGContextDrawImage(bitmapRef, extent, bitmapImage);
+    
+    // Create an image with the contents of our bitmap
+    CGImageRef scaledImage = CGBitmapContextCreateImage(bitmapRef);
+    
+    // Cleanup
+    CGContextRelease(bitmapRef);
+    CGImageRelease(bitmapImage);
+    
+    return scaledImage;
 }
 
 @end

ShadowsocksX-NG/SWBQRCodeWindowController.xib

@@ -1,13 +1,13 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="10117" systemVersion="15G31" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="11201" systemVersion="16A323" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="10117"/>
-        <plugIn identifier="com.apple.WebKitIBPlugin" version="10117"/>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="11201"/>
     </dependencies>
     <objects>
         <customObject id="-2" userLabel="File's Owner" customClass="SWBQRCodeWindowController">
             <connections>
-                <outlet property="webView" destination="ojI-LR-jEw" id="bpE-vv-uIe"/>
+                <outlet property="imageView" destination="yRy-QH-TEe" id="aa5-Ri-k04"/>
                 <outlet property="window" destination="QvC-M9-y7g" id="HLy-eJ-5RD"/>
             </connections>
         </customObject>
@@ -16,24 +16,17 @@
         <window title="QR Code" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" restorable="NO" oneShot="NO" animationBehavior="default" id="QvC-M9-y7g">
             <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES"/>
             <rect key="contentRect" x="566" y="456" width="250" height="250"/>
-            <rect key="screenRect" x="0.0" y="0.0" width="1440" height="877"/>
+            <rect key="screenRect" x="0.0" y="0.0" width="1680" height="1027"/>
             <view key="contentView" id="EiT-Mj-1SZ">
                 <rect key="frame" x="0.0" y="0.0" width="250" height="250"/>
                 <autoresizingMask key="autoresizingMask"/>
                 <subviews>
-                    <webView translatesAutoresizingMaskIntoConstraints="NO" id="ojI-LR-jEw">
+                    <imageView horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="yRy-QH-TEe">
                         <rect key="frame" x="0.0" y="0.0" width="250" height="250"/>
-                        <webPreferences key="preferences" defaultFontSize="12" defaultFixedFontSize="12">
-                            <nil key="identifier"/>
-                        </webPreferences>
-                    </webView>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                        <imageCell key="cell" refusesFirstResponder="YES" alignment="left" imageScaling="proportionallyDown" id="iAJ-tw-LNU"/>
+                    </imageView>
                 </subviews>
-                <constraints>
-                    <constraint firstAttribute="trailing" secondItem="ojI-LR-jEw" secondAttribute="trailing" id="ImJ-r1-FF9"/>
-                    <constraint firstAttribute="bottom" secondItem="ojI-LR-jEw" secondAttribute="bottom" id="LQv-2G-kyf"/>
-                    <constraint firstItem="ojI-LR-jEw" firstAttribute="leading" secondItem="EiT-Mj-1SZ" secondAttribute="leading" id="kok-J1-X08"/>
-                    <constraint firstItem="ojI-LR-jEw" firstAttribute="top" secondItem="EiT-Mj-1SZ" secondAttribute="top" id="voV-aN-Ggt"/>
-                </constraints>
             </view>
         </window>
     </objects>

ShadowsocksX-NG/qrcode.htm

@@ -1,28 +0,0 @@
-<!doctype html>
-<script src="jquery.min.js">
-</script>
-<script src="qrcode.min.js">
-</script>
-<style>
-    body {
-        padding: 10px;
-        margin: 0;
-    }
-    #qrcode {
-        width:230px;
-        height:230px;
-    }
-</style>
-<div id="qrcode"></div>
-<script type="text/javascript">
-    function genCode(code) {
-        new QRCode("qrcode", {
-                   text: code,
-                   width: 230,
-                   height: 230,
-                   colorDark : "#000000",
-                   colorLight : "#ffffff",
-                   correctLevel : QRCode.CorrectLevel.H
-                   });
-    }
-</script>