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/* HBToolbarBadgedItem.m
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License.
*/
#import "HBToolbarBadgedItem.h"
@interface HBToolbarBadgedItem ()
@property (nonatomic) NSImage *primary;
@property (nonatomic) NSImage *cache;
@end
@implementation HBToolbarBadgedItem
- (instancetype)initWithItemIdentifier:(NSString *)itemIdentifier
{
self = [super initWithItemIdentifier:itemIdentifier];
if (self)
{
_badgeFillColor = [NSColor redColor];
_badgeTextColor = [NSColor whiteColor];
}
return self;
}
- (void)awakeFromNib
{
if ([self respondsToSelector:@selector(awakeFromNib)])
{
[super awakeFromNib];
}
[self HB_refreshBadge];
}
#pragma mark - Public
- (void)setImage:(NSImage *)image
{
_primary = image;
if (_badgeValue.length)
{
_cache = nil;
[super setImage:[self HB_badgeImage:_badgeValue]];
}
else
{
[super setImage:image];
}
}
- (void)setBadgeValue:(NSString *)badgeValue
{
if (![_badgeValue isEqualToString:badgeValue])
{
if (badgeValue.length)
{
[super setImage:[self HB_badgeImage:badgeValue]];
}
else
{
[super setImage:_primary];
}
_badgeValue = [badgeValue copy];
}
}
- (void)setBadgeTextColor:(NSColor *)badgeTextColor
{
_badgeTextColor = [badgeTextColor copy];
[self HB_refreshBadge];
}
- (void)setBadgeFillColor:(NSColor *)badgeFillColor
{
_badgeFillColor = [badgeFillColor copy];
[self HB_refreshBadge];
}
#pragma mark -- Private Methods
- (CGColorRef)copyNSColorToCGColor:(NSColor *)color
{
// CGColor property of NSColor has been added only in 10.8,
// we need to support 10.7 too.
NSInteger numberOfComponents = [color numberOfComponents];
CGFloat components[numberOfComponents];
CGColorSpaceRef colorSpace = [[color colorSpace] CGColorSpace];
[color getComponents:(CGFloat *)&components];
CGColorRef cgColor = CGColorCreate(colorSpace, components);
return cgColor;
}
- (void)HB_refreshBadge
{
if (_badgeValue.length)
{
_cache = [self HB_renderImage:_primary withBadge:_badgeValue];
[super setImage:_cache];
}
}
- (NSImage *)HB_badgeImage:(NSString *)badgeValue
{
if (![_badgeValue isEqualToString:badgeValue] || _cache == nil)
{
_cache = [self HB_renderImage:_primary withBadge:badgeValue];
}
return _cache;
}
- (NSImage *)HB_renderImage:(NSImage *)image withBadge:(NSString *)badgeString
{
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
NSImage *newImage = [[NSImage alloc] initWithSize:image.size];
for (NSImageRep *rep in image.representations)
{
NSSize size = NSMakeSize(rep.pixelsWide, rep.pixelsHigh);
NSBitmapImageRep *newRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL
pixelsWide:(NSInteger)floor(size.width)
pixelsHigh:(NSInteger)floor(size.height)
bitsPerSample:8
samplesPerPixel:4
hasAlpha:YES
isPlanar:NO
colorSpaceName:NSDeviceRGBColorSpace
bytesPerRow:(NSInteger)floor(size.width) * 4
bitsPerPixel:32];
NSGraphicsContext *ctx = [NSGraphicsContext graphicsContextWithBitmapImageRep:newRep];
[NSGraphicsContext saveGraphicsState];
[NSGraphicsContext setCurrentContext:ctx];
CGContextRef context = [[NSGraphicsContext currentContext] CGContext];
CGContextSaveGState(context);
NSRect imageRect = NSMakeRect(0, 0, size.width, size.height);
CGImageRef ref = [image CGImageForProposedRect:&imageRect context:[NSGraphicsContext currentContext] hints:nil];
CGContextDrawImage(context, imageRect, ref);
// Work out the area
CGFloat scaleFactor = rep.pixelsWide / rep.size.width;
CGFloat typeSize = 10;
if (scaleFactor > 1)
{
typeSize = 8;
}
CGFloat pointSize = typeSize * scaleFactor;
NSFont *font = [NSFont boldSystemFontOfSize:pointSize];
NSDictionary *attr = @{NSParagraphStyleAttributeName : paragraphStyle,
NSFontAttributeName : font,
NSForegroundColorAttributeName : _badgeTextColor };
NSRect textBounds = [badgeString boundingRectWithSize:NSZeroSize
options:0
attributes:attr];
NSPoint indent = NSMakePoint(typeSize * scaleFactor, 2 * scaleFactor);
CGFloat radius = (textBounds.size.height + indent.y) * 0.5f;
CGFloat offset_x = 0;
CGFloat offset_y = 0;
if (scaleFactor > 1)
{
offset_y = 2 * scaleFactor;
}
NSRect badgeRect = NSMakeRect(size.width - textBounds.size.width - indent.x - offset_x, offset_y,
textBounds.size.width + indent.x, textBounds.size.height + indent.y);
badgeRect = NSIntegralRect(badgeRect);
// Draw the ellipse
CGFloat minx = CGRectGetMinX(badgeRect);
CGFloat midx = CGRectGetMidX(badgeRect);
CGFloat maxx = CGRectGetMaxX(badgeRect);
CGFloat miny = CGRectGetMinY(badgeRect);
CGFloat midy = CGRectGetMidY(badgeRect);
CGFloat maxy = CGRectGetMaxY(badgeRect);
// Fill the ellipse
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextMoveToPoint(context, minx, midy);
CGContextAddArcToPoint(context, minx, miny, midx, miny, radius);
CGContextAddArcToPoint(context, maxx, miny, maxx, midy, radius);
CGContextAddArcToPoint(context, maxx, maxy, midx, maxy, radius);
CGContextAddArcToPoint(context, minx, maxy, minx, midy, radius);
CGContextClosePath(context);
CGColorRef fillColor = [self copyNSColorToCGColor:_badgeFillColor];
CGContextSetFillColorWithColor(context,fillColor);
CFRelease(fillColor);
CGContextDrawPath(context, kCGPathFill);
// Draw the text
badgeRect.origin.x = CGRectGetMidX(badgeRect);
badgeRect.origin.x -= textBounds.origin.x / 2;
badgeRect.origin.x -= ((textBounds.size.width - textBounds.origin.x) * 0.5f);
badgeRect.origin.y = CGRectGetMidY(badgeRect);
badgeRect.origin.y -= textBounds.origin.y / 2;
badgeRect.origin.y -= ((textBounds.size.height - textBounds.origin.y) * 0.5f);
badgeRect.origin.x = floor(badgeRect.origin.x);
badgeRect.origin.y = floor(badgeRect.origin.y);
badgeRect.size.width = textBounds.size.width;
badgeRect.size.height = textBounds.size.height;
[badgeString drawInRect:badgeRect withAttributes:attr];
CGContextRestoreGState(context);
CGContextFlush(context);
CGContextRestoreGState(context);
[NSGraphicsContext restoreGraphicsState];
[newImage addRepresentation:newRep];
}
return newImage;
}
@end
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