Upstream code and resources for Chrome on iOS extensions.

ios/chrome/today_extension/notification_center_button.mm

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import <NotificationCenter/NotificationCenter.h>
+#import <QuartzCore/QuartzCore.h>
+
+#import "ios/chrome/today_extension/notification_center_button.h"
+
+#import "base/mac/scoped_nsobject.h"
+#include "ios/chrome/today_extension/ui_util.h"
+
+@implementation NotificationCenterButton {
+  CGFloat _horizontalPadding;
+  CGFloat _verticalPadding;
+  CGSize _imageSize;
+  CGFloat _imageTextSeparator;
+  // Shift the centered content to the front (left in LTR, right in RTL).
+  CGFloat _frontShift;
+}
+
+- (instancetype)initWithTitle:(NSString*)title
+                         icon:(NSString*)icon
+                       target:(id)target
+                       action:(SEL)action
+              backgroundColor:(UIColor*)backgroundColor
+                     inkColor:(UIColor*)inkColor
+                   titleColor:(UIColor*)titleColor {
+  self = [super initWithFrame:CGRectZero];
+  if (self) {
+    [self setInkColor:inkColor];
+    if ([icon length]) {
+      UIImage* iconImage = [UIImage imageNamed:icon];
+      [self setImage:iconImage forState:UIControlStateNormal];
+      _imageSize = [iconImage size];
+    } else {
+      _imageSize = CGSizeZero;
+    }
+    [self bringSubviewToFront:[self imageView]];
+
+    [self addTarget:target
+                  action:action
+        forControlEvents:UIControlEventTouchUpInside];
+    [self setExclusiveTouch:YES];
+
+    UIFont* titleFont =
+        [UIFont fontWithName:@"Helvetica" size:ui_util::kTitleFontSize];
+    [super setTitle:title forState:UIControlStateNormal];
+    [self setBackgroundColor:backgroundColor];
+    [self titleLabel].font = titleFont;
+    [self titleLabel].lineBreakMode = NSLineBreakByTruncatingTail;
+    [self setTitleColor:titleColor forState:UIControlStateNormal];
+    [self setTitleColor:[titleColor colorWithAlphaComponent:1]
+               forState:UIControlStateHighlighted];
+  }
+  return self;
+}
+
+- (void)setButtonSpacesSeparator:(const CGFloat)separator
+                      frontShift:(const CGFloat)frontShift
+               horizontalPadding:(const CGFloat)horizontalPadding
+                 verticalPadding:(const CGFloat)verticalPadding {
+  _horizontalPadding = horizontalPadding;
+  _verticalPadding = verticalPadding;
+  _imageTextSeparator = separator;
+  _frontShift = frontShift;
+}
+
+@end