transmission/macosx/BadgeView.mm

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// This file Copyright © 2007-2022 Transmission authors and contributors.
// It may be used under the MIT (SPDX: MIT) license.
// License text can be found in the licenses/ folder.
#import "BadgeView.h"
#import "NSStringAdditions.h"
static CGFloat const kBetweenPadding = 2.0;
@interface BadgeView ()
@property(nonatomic) NSMutableDictionary* fAttributes;
@property(nonatomic) CGFloat fDownloadRate;
@property(nonatomic) CGFloat fUploadRate;
@end
@implementation BadgeView
- (instancetype)init
{
if ((self = [super init]))
{
_fDownloadRate = 0.0;
_fUploadRate = 0.0;
}
return self;
}
- (BOOL)setRatesWithDownload:(CGFloat)downloadRate upload:(CGFloat)uploadRate
{
//only needs update if the badges were displayed or are displayed now
if (self.fDownloadRate == downloadRate && self.fUploadRate == uploadRate)
{
return NO;
}
self.fDownloadRate = downloadRate;
self.fUploadRate = uploadRate;
return YES;
}
- (void)drawRect:(NSRect)rect
{
[NSApp.applicationIconImage drawInRect:rect fromRect:NSZeroRect operation:NSCompositingOperationSourceOver fraction:1.0];
BOOL const upload = self.fUploadRate >= 0.1;
BOOL const download = self.fDownloadRate >= 0.1;
CGFloat bottom = 0.0;
if (download)
{
NSImage* downloadBadge = [NSImage imageNamed:@"DownloadBadge"];
[self badge:downloadBadge string:[NSString stringForSpeedAbbrev:self.fDownloadRate] atHeight:bottom];
if (upload)
{
bottom += downloadBadge.size.height + kBetweenPadding; //upload rate above download rate
}
}
if (upload)
{
[self badge:[NSImage imageNamed:@"UploadBadge"] string:[NSString stringForSpeedAbbrev:self.fUploadRate] atHeight:bottom];
}
}
- (void)badge:(NSImage*)badge string:(NSString*)string atHeight:(CGFloat)height
{
if (!self.fAttributes)
{
NSShadow* stringShadow = [[NSShadow alloc] init];
stringShadow.shadowOffset = NSMakeSize(2.0, -2.0);
stringShadow.shadowBlurRadius = 4.0;
self.fAttributes = [[NSMutableDictionary alloc] initWithCapacity:3];
self.fAttributes[NSForegroundColorAttributeName] = NSColor.whiteColor;
self.fAttributes[NSShadowAttributeName] = stringShadow;
}
NSRect badgeRect;
badgeRect.size = badge.size;
badgeRect.origin.x = 0.0;
badgeRect.origin.y = height;
[badge drawInRect:badgeRect fromRect:NSZeroRect operation:NSCompositingOperationSourceOver fraction:1.0];
//make sure text fits on the badge
CGFloat fontSize = 26.0;
NSSize stringSize;
do
{
self.fAttributes[NSFontAttributeName] = [NSFont boldSystemFontOfSize:fontSize];
stringSize = [string sizeWithAttributes:self.fAttributes];
fontSize -= 1.0;
} while (NSWidth(badgeRect) < stringSize.width);
//string is in center of image
NSRect stringRect;
stringRect.origin.x = NSMidX(badgeRect) - stringSize.width * 0.5;
stringRect.origin.y = NSMidY(badgeRect) - stringSize.height * 0.5 + 1.0; //adjust for shadow
stringRect.size = stringSize;
[string drawInRect:stringRect withAttributes:self.fAttributes];
}
@end