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// Copyright (c) 2012 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 "chrome/browser/ui/cocoa/chrome_browser_window.h"
#include "base/logging.h"
#include "chrome/browser/themes/theme_properties.h"
#import "chrome/browser/ui/cocoa/themed_window.h"
#include "ui/base/theme_provider.h"
namespace {
// Upper and lower bounds for determining if a theme's colors indicate that
// it's a "dark" theme. In Material Design, dark themes have controls that are
// drawn using transparent white instead of a transparent shade of gray.
const CGFloat kDarkThemeToolbarColorUpperBound = 0.55;
const CGFloat kDarkThemeTabTextColorLowerBound = 0.7;
} // namespace
@interface NSWindow (Private)
- (BOOL)hasKeyAppearance;
@end
@implementation ChromeBrowserWindow
- (const ui::ThemeProvider*)themeProvider {
id delegate = [self delegate];
if (![delegate respondsToSelector:@selector(themeProvider)])
return NULL;
return [delegate themeProvider];
}
- (ThemedWindowStyle)themedWindowStyle {
id delegate = [self delegate];
if (![delegate respondsToSelector:@selector(themedWindowStyle)])
return THEMED_NORMAL;
return [delegate themedWindowStyle];
}
- (NSPoint)themeImagePositionForAlignment:(ThemeImageAlignment)alignment {
id delegate = [self delegate];
if (![delegate respondsToSelector:@selector(themeImagePositionForAlignment:)])
return NSZeroPoint;
return [delegate themeImagePositionForAlignment:alignment];
}
- (BOOL)inIncognitoMode {
const ui::ThemeProvider* themeProvider = [self themeProvider];
return themeProvider && themeProvider->InIncognitoMode();
}
- (BOOL)inIncognitoModeWithSystemTheme {
const ui::ThemeProvider* themeProvider = [self themeProvider];
return themeProvider && themeProvider->InIncognitoMode() &&
themeProvider->UsingSystemTheme();
}
- (BOOL)hasDarkTheme {
// If a system theme, return YES if Incognito.
const ui::ThemeProvider* themeProvider = [self themeProvider];
if (!themeProvider) {
return NO;
} else if (themeProvider->UsingSystemTheme()) {
return themeProvider->InIncognitoMode();
}
// If the custom theme has a custom toolbar color, return YES if it's
// dark.
if (themeProvider->HasCustomColor(ThemeProperties::COLOR_TOOLBAR)) {
NSColor* theColor =
themeProvider->GetNSColor(ThemeProperties::COLOR_TOOLBAR);
theColor =
[theColor colorUsingColorSpaceName:NSCalibratedWhiteColorSpace];
if (theColor != nil) {
// The white componement cutoff is an empirical value.
return [theColor whiteComponent] < kDarkThemeToolbarColorUpperBound;
}
}
// If the custom theme has a custom tab text color, assume that a light
// color means a dark tab background image, and therefore a dark theme.
if (themeProvider->HasCustomColor(ThemeProperties::COLOR_TAB_TEXT)) {
NSColor* theColor =
themeProvider->GetNSColor(ThemeProperties::COLOR_TAB_TEXT);
theColor =
[theColor colorUsingColorSpaceName:NSCalibratedWhiteColorSpace];
if (theColor != nil) {
return [theColor whiteComponent] >= kDarkThemeTabTextColorLowerBound;
}
}
return NO;
}
- (BOOL)hasKeyAppearance {
// If not key, but a non-main child window without its own traffic lights _is_
// key, then show this window with key appearance to keep the traffic lights
// lit. This does not currently handle WebModal dialogs, since they are
// children of an overlay window. But WebModals also temporarily lose key
// status while animating closed, so extra logic is needed to avoid flicker.
// Start with an early exit, since this is called for every mouseMove and
// every cursor blink in an NSTextField.
if (![self isKeyWindow]) {
for (NSWindow* child in [self childWindows]) {
if ([child isKeyWindow] && ![child isMainWindow] &&
([child styleMask] & NSClosableWindowMask) == 0)
return YES;
}
}
return [super hasKeyAppearance];
}
@end
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