// Copyright (c) 2009 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.

#include "chrome/browser/cocoa/infobar_gradient_view.h"

#import "chrome/browser/browser_theme_provider.h"
#import "chrome/browser/cocoa/themed_window.h"

const double kBackgroundColorTop[3] =
    {255.0 / 255.0, 242.0 / 255.0, 183.0 / 255.0};
const double kBackgroundColorBottom[3] =
    {250.0 / 255.0, 230.0 / 255.0, 145.0 / 255.0};

@implementation InfoBarGradientView

- (id)initWithFrame:(NSRect)frameRect {
  if ((self = [super initWithFrame:frameRect])) {
    NSColor* startingColor =
        [NSColor colorWithCalibratedRed:kBackgroundColorTop[0]
                                  green:kBackgroundColorTop[1]
                                   blue:kBackgroundColorTop[2]
                                  alpha:1.0];
    NSColor* endingColor =
        [NSColor colorWithCalibratedRed:kBackgroundColorBottom[0]
                                  green:kBackgroundColorBottom[1]
                                   blue:kBackgroundColorBottom[2]
                                  alpha:1.0];
    gradient_ =
        [[NSGradient alloc] initWithStartingColor:startingColor
                                       endingColor:endingColor];
  }
  return self;
}

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

- (void)setGradient:(NSGradient*)gradient {
  [gradient retain];
  [gradient_ release];
  gradient_ = gradient;
}

- (NSColor*)strokeColor {
  ThemeProvider* themeProvider = [[self window] themeProvider];
  if (!themeProvider)
    return [NSColor blackColor];

  BOOL active = [[self window] isMainWindow];
  return themeProvider->GetNSColor(
      active ? BrowserThemeProvider::COLOR_TOOLBAR_STROKE :
               BrowserThemeProvider::COLOR_TOOLBAR_STROKE_INACTIVE,
      true);
}

- (void)drawRect:(NSRect)rect {
  [gradient_ drawInRect:[self bounds] angle:270];

  // Draw bottom stroke
  [[self strokeColor] set];
  NSRect borderRect, contentRect;
  NSDivideRect([self bounds], &borderRect, &contentRect, 1, NSMinYEdge);
  NSRectFillUsingOperation(borderRect, NSCompositeSourceOver);
}

- (BOOL)mouseDownCanMoveWindow {
  return NO;
}

// This view is intentionally not opaque because it overlaps with the findbar.

- (BOOL)accessibilityIsIgnored {
  return NO;
}

- (id)accessibilityAttributeValue:(NSString*)attribute {
  if ([attribute isEqual:NSAccessibilityRoleAttribute])
    return NSAccessibilityGroupRole;

  return [super accessibilityAttributeValue:attribute];
}

@end