/******************************************************************************
 * $Id$
 *
 * Copyright (c) 2007 Transmission authors and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *****************************************************************************/

#import "BadgeView.h"
#import "NSStringAdditions.h"

#define BOTTOM_PADDING 2.0
#define BETWEEN_PADDING 2.0

@interface BadgeView (Private)

- (void) badge: (NSImage *) badge string: (NSString *) string atHeight: (float) height;

@end

@implementation BadgeView

- (id) initWithFrame: (NSRect) frame lib: (tr_handle *) lib
{
    if ((self = [super initWithFrame: frame]))
    {
        fLib = lib;
        fQuitting = NO;
    }
    return self;
}

- (void) setQuitting
{
    fQuitting = YES;
}

- (void) dealloc
{
    [fAttributes release];
    [super dealloc];
}

- (void) drawRect: (NSRect) rect
{
    [[NSImage imageNamed: @"NSApplicationIcon"] drawInRect: rect fromRect: NSZeroRect operation: NSCompositeSourceOver fraction: 1.0];
    
    if (fQuitting)
    {
        return;
    }
    
    BOOL checkDownload = [[NSUserDefaults standardUserDefaults] boolForKey: @"BadgeDownloadRate"],
        checkUpload = [[NSUserDefaults standardUserDefaults] boolForKey: @"BadgeUploadRate"];
    if (checkDownload || checkUpload)
    {
        //set upload and download rate badges
        NSString * downloadRateString = nil, * uploadRateString = nil;
        
        float downloadRate, uploadRate;
        tr_torrentRates(fLib, &downloadRate, &uploadRate);
        
        if (checkDownload && downloadRate >= 0.1)
            downloadRateString = [NSString stringForSpeedAbbrev: downloadRate];
        if (checkUpload && uploadRate >= 0.1)
            uploadRateString = [NSString stringForSpeedAbbrev: uploadRate];
        
        if (uploadRateString || downloadRateString)
        {
           if (uploadRateString)
                [self badge: [NSImage imageNamed: @"UploadBadge"] string: uploadRateString atHeight: 0.0];
            
            if (downloadRateString)
            {
                //download rate above upload rate
                float bottom = uploadRateString ? [[NSImage imageNamed: @"UploadBadge"] size].height + BETWEEN_PADDING : 0.0;
                [self badge: [NSImage imageNamed: @"DownloadBadge"] string: downloadRateString atHeight: bottom];
            }
        }
    }
}

@end

@implementation BadgeView (Private)

//dock icon must have locked focus
- (void) badge: (NSImage *) badge string: (NSString *) string atHeight: (float) height
{
    if (!fAttributes)
    {
        NSShadow * stringShadow = [[NSShadow alloc] init];
        [stringShadow setShadowOffset: NSMakeSize(2.0, -2.0)];
        [stringShadow setShadowBlurRadius: 4.0];
        
        fAttributes = [[NSDictionary alloc] initWithObjectsAndKeys:
            [NSColor whiteColor], NSForegroundColorAttributeName,
            [NSFont boldSystemFontOfSize: 26.0], NSFontAttributeName, stringShadow, NSShadowAttributeName, nil];
        
        [stringShadow release];
    }
    
    NSRect badgeRect = NSZeroRect;
    badgeRect.size = [badge size];
    badgeRect.origin.y = height;
    
    [badge drawInRect: badgeRect fromRect: NSZeroRect operation: NSCompositeSourceOver fraction: 1.0];
    
    //string is in center of image
    NSSize stringSize = [string sizeWithAttributes: fAttributes];
    
    NSRect stringRect = badgeRect;
    stringRect.origin.x += (badgeRect.size.width - stringSize.width) * 0.5;
    stringRect.origin.y += (badgeRect.size.height - stringSize.height) * 0.5;
    stringRect.size = stringSize;
    
    //adjust for shadow
    stringRect.origin.y += 1.0;
    
    [string drawInRect: stringRect withAttributes: fAttributes];
}

@end