transmission/macosx/InfoTabButtonBack.mm

/******************************************************************************
 * Copyright (c) 2011-2012 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 "InfoTabButtonBack.h"
#import "NSApplicationAdditions.h"

@implementation InfoTabButtonBack

- (void)drawRect:(NSRect)rect
{
    NSInteger count = 0;
    NSRect gridRects[2];
    NSColor* colorRects[2];

    NSRect lineBorderRect = NSMakeRect(NSMinX(rect), NSHeight(self.bounds) - 1.0, NSWidth(rect), 1.0);
    if (NSIntersectsRect(lineBorderRect, rect))
    {
        gridRects[count] = lineBorderRect;
        if (@available(macOS 10.14, *))
        {
            colorRects[count] = NSColor.separatorColor;
        }
        else
        {
            colorRects[count] = NSColor.grayColor;
        }
        ++count;

        rect.size.height -= 1.0;
    }

    lineBorderRect.origin.y = 0.0;
    if (NSIntersectsRect(lineBorderRect, rect))
    {
        gridRects[count] = lineBorderRect;
        if (@available(macOS 10.14, *))
        {
            colorRects[count] = NSColor.separatorColor;
        }
        else
        {
            colorRects[count] = NSColor.grayColor;
        }
        ++count;

        rect.origin.y += 1.0;
        rect.size.height -= 1.0;
    }

    NSRectFillListWithColors(gridRects, colorRects, count);

    NSGradient* gradient;

    if (NSApp.isDarkMode)
    {
        NSColor* darkColor = [NSColor colorWithCalibratedRed:60.0 / 255.0 green:60.0 / 255.0 blue:60.0 / 255.0 alpha:1.0];
        NSColor* lightColor = [NSColor colorWithCalibratedRed:90.0 / 255.0 green:90.0 / 255.0 blue:90.0 / 255.0 alpha:1.0];
        gradient = [[NSGradient alloc] initWithStartingColor:lightColor endingColor:darkColor];
    }
    else
    {
        NSColor* lightColor = [NSColor colorWithCalibratedRed:245.0 / 255.0 green:245.0 / 255.0 blue:245.0 / 255.0 alpha:1.0];
        NSColor* darkColor = [NSColor colorWithCalibratedRed:215.0 / 255.0 green:215.0 / 255.0 blue:215.0 / 255.0 alpha:1.0];
        gradient = [[NSGradient alloc] initWithStartingColor:lightColor endingColor:darkColor];
    }
    [gradient drawInRect:rect angle:270.0];
}

@end