Improve the look of the avatar label button (views).

chrome/browser/ui/views/avatar_label.cc

 // Copyright 2013 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/ui/views/avatar_label.h"
 
+#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/themes/theme_properties.h"
-#include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/views/avatar_menu_bubble_view.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "grit/generated_resources.h"
 #include "ui/base/events/event.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/theme_provider.h"
-#include "ui/gfx/point.h"
-#include "ui/gfx/rect.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/color_utils.h"
+#include "ui/views/painter.h"
+
+namespace {
+
+// A special text button border for the managed user avatar label.
+class AvatarLabelBorder: public views::TextButtonBorder {
+ public:
+  explicit AvatarLabelBorder(ui::ThemeProvider* theme_provider);
+
+  virtual void Paint(const views::View& view, gfx::Canvas* canvas) OVERRIDE;
+
+ private:
+  scoped_ptr<views::Painter> hot_painter_;
+  scoped_ptr<views::Painter> painter_;
+
+  DISALLOW_COPY_AND_ASSIGN(AvatarLabelBorder);
+};
+
+AvatarLabelBorder::AvatarLabelBorder(ui::ThemeProvider* theme_provider) {
+  const int kHorizontalInset = 10;
+  const int kVerticalInset = 2;
+  SetInsets(gfx::Insets(
+      kVerticalInset, kHorizontalInset, kVerticalInset, kHorizontalInset));
+  SkColor color = theme_provider->GetColor(
+      ThemeProperties::COLOR_MANAGED_USER_LABEL_BACKGROUND);
+  SkColor color2 = color_utils::BlendTowardOppositeLuminance(color, 0x20);
+  painter_.reset(views::Painter::CreateVerticalGradient(color, color2));
+  hot_painter_.reset(views::Painter::CreateVerticalGradient(color2, color));
+}
+
+void AvatarLabelBorder::Paint(const views::View& view, gfx::Canvas* canvas) {
+  const views::TextButton* button =
+      static_cast<const views::TextButton*>(&view);
+  if (button->state() == views::TextButton::STATE_HOVERED ||
+      button->state() == views::TextButton::STATE_PRESSED)
+    hot_painter_->Paint(canvas, view.size());
+  else
+    painter_->Paint(canvas, view.size());
+}
+
+}  // namespace
 
 AvatarLabel::AvatarLabel(BrowserView* browser_view,
                          ui::ThemeProvider* theme_provider)
     : TextButton(NULL,
                  l10n_util::GetStringUTF16(IDS_MANAGED_USER_AVATAR_LABEL)),
       browser_view_(browser_view),
       theme_provider_(theme_provider) {
   SetFont(ui::ResourceBundle::GetSharedInstance().GetFont(
       ui::ResourceBundle::SmallFont));
   ClearMaxTextSize();
-  views::TextButtonNativeThemeBorder* border =
-      new views::TextButtonNativeThemeBorder(this);
-  const int kHorizontalInset = 10;
-  const int kVerticalInset = 2;
-  border->SetInsets(gfx::Insets(
-      kVerticalInset, kHorizontalInset, kVerticalInset, kHorizontalInset));
-  set_border(border);
+  set_border(new AvatarLabelBorder(theme_provider));
   UpdateLabelStyle();
 }
 
 AvatarLabel::~AvatarLabel() {}
 
 bool AvatarLabel::OnMousePressed(const ui::MouseEvent& event) {
   if (!TextButton::OnMousePressed(event))
     return false;
 
   browser_view_->ShowAvatarBubbleFromAvatarButton();
   return true;
 }
 
-void AvatarLabel::GetExtraParams(ui::NativeTheme::ExtraParams* params) const {
-  TextButton::GetExtraParams(params);
-  params->button.background_color = theme_provider_->GetColor(
-      ThemeProperties::COLOR_MANAGED_USER_LABEL_BACKGROUND);
-}
-
 void AvatarLabel::UpdateLabelStyle() {
   SkColor color_label =
       theme_provider_->GetColor(ThemeProperties::COLOR_MANAGED_USER_LABEL);
   SetEnabledColor(color_label);
+  SetHighlightColor(color_label);
+  SetHoverColor(color_label);
+  SetDisabledColor(color_label);
   SchedulePaint();
 }