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Show overlay text 'Legacy'/'SIP002' on qrcode.

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This commit is contained in:
Qiu Yuzhou
2017-08-26 02:08:27 +08:00
parent cf82e85392
commit edaa2117eb
1 changed files with 31 additions and 4 deletions
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35
ShadowsocksX-NG/SWBQRCodeWindowController.m
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@ -19,13 +19,32 @@
[super windowDidLoad];
// Implement this method to handle any initialization after your window controller's window has been loaded from its nib file.
[self setQRCode:self.qrCode];
[self setQRCode:self.qrCode withOverlayText:@"Shadowsocks-NG SIP002"];
}
- (void)setQRCode:(NSString*) qrCode {
- (void)setQRCode:(NSString*) qrCode withOverlayText: (NSString*) text {
CGImageRef cgImgRef = [self createQRImageForString:qrCode size:CGSizeMake(250, 250)];
NSImage *image = [[NSImage alloc]initWithCGImage:cgImgRef size:CGSizeMake(250, 250)];
if (text) {
// Draw overlay text
NSDictionary* attrs = @{
NSForegroundColorAttributeName: [NSColor colorWithRed:28/255.0 green:155/255.0 blue:71/255.0 alpha:1],
NSBackgroundColorAttributeName: [NSColor whiteColor],
NSFontAttributeName: [NSFont fontWithName:@"Helvetica" size:(CGFloat)16],
};
NSMutableAttributedString* attrsText = [[NSMutableAttributedString alloc] initWithString: text
attributes: attrs];
[attrsText setAttributes:@{
NSForegroundColorAttributeName: [NSColor darkGrayColor],
NSBackgroundColorAttributeName: [NSColor whiteColor],
NSFontAttributeName: [NSFont fontWithName:@"Helvetica" size:(CGFloat)16],
} range: NSMakeRange(0, 14)];
[image lockFocus];
[attrsText drawAtPoint: NSMakePoint(45, 8)];
[image unlockFocus];
}
self.imageView.image = image;
}
@ -36,6 +55,14 @@
NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
[filter setValue:data forKey:@"inputMessage"];
/*
L: 7%
M: 15%
Q: 25%
H: 30%
*/
[filter setValue:@"Q" forKey:@"inputCorrectionLevel"];
CIImage *image = [filter valueForKey:@"outputImage"];
// Calculate the size of the generated image and the scale for the desired image size
@ -81,9 +108,9 @@
- (void)flagsChanged:(NSEvent *)event {
NSUInteger modifiers = event.modifierFlags & NSDeviceIndependentModifierFlagsMask;
if (modifiers & NSAlternateKeyMask) {
[self setQRCode:self.legacyQRCode];
[self setQRCode:self.legacyQRCode withOverlayText:@"Shadowsocks-NG Legacy"];
} else {
[self setQRCode:self.qrCode];
[self setQRCode:self.qrCode withOverlayText:@"Shadowsocks-NG SIP002"];
}
}