Revert 98434 - Adding a Views scrollbar implementation.

views/controls/scrollbar/native_scroll_bar_views.cc

Index: views/controls/scrollbar/native_scroll_bar_views.cc
===================================================================
--- views/controls/scrollbar/native_scroll_bar_views.cc	(revision 98466)
+++ views/controls/scrollbar/native_scroll_bar_views.cc	(working copy)
@@ -1,371 +0,0 @@
-// Copyright (c) 2011 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 "views/controls/scrollbar/native_scroll_bar_views.h"
-
-#include "base/logging.h"
-#include "ui/base/keycodes/keyboard_codes.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/canvas_skia.h"
-#include "ui/gfx/path.h"
-#include "views/controls/button/custom_button.h"
-#include "views/controls/focusable_border.h"
-#include "views/controls/scrollbar/native_scroll_bar.h"
-#include "views/controls/scrollbar/scroll_bar.h"
-#include "views/controls/scrollbar/base_scroll_bar_button.h"
-#include "views/controls/scrollbar/base_scroll_bar_thumb.h"
-
-namespace views {
-
-namespace {
-
-// Wrapper for the scroll buttons.
-class ScrollBarButton : public BaseScrollBarButton {
- public:
-  enum Type {
-    UP,
-    DOWN,
-    LEFT,
-    RIGHT,
-  };
-
-  ScrollBarButton(ButtonListener* listener, Type type);
-  virtual ~ScrollBarButton();
-
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
-
- protected:
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
-
- private:
-  gfx::NativeTheme::ExtraParams GetNativeThemeParams() const;
-  gfx::NativeTheme::Part GetNativeThemePart() const;
-  gfx::NativeTheme::State GetNativeThemeState() const;
-
-  Type type_;
-};
-
-// Wrapper for the scroll thumb
-class ScrollBarThumb : public BaseScrollBarThumb {
- public:
-  explicit ScrollBarThumb(BaseScrollBar* scroll_bar);
-  virtual ~ScrollBarThumb();
-
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
-
- protected:
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
-
- private:
-  gfx::NativeTheme::ExtraParams GetNativeThemeParams() const;
-  gfx::NativeTheme::Part GetNativeThemePart() const;
-  gfx::NativeTheme::State GetNativeThemeState() const;
-
-  ScrollBar* scroll_bar_;
-};
-
-/////////////////////////////////////////////////////////////////////////////
-// ScrollBarButton
-
-ScrollBarButton::ScrollBarButton(
-    ButtonListener* listener,
-    Type type)
-    : BaseScrollBarButton(listener),
-      type_(type) {
-}
-
-ScrollBarButton::~ScrollBarButton() {
-}
-
-gfx::Size ScrollBarButton::GetPreferredSize() {
-  const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance();
-  return native_theme->GetPartSize(GetNativeThemePart(),
-                                   GetNativeThemeState(),
-                                   GetNativeThemeParams());
-}
-
-void ScrollBarButton::OnPaint(gfx::Canvas* canvas) {
-  const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance();
-  gfx::Rect bounds;
-  bounds.set_size(GetPreferredSize());
-
-  native_theme->Paint(canvas->AsCanvasSkia(),
-                      GetNativeThemePart(),
-                      GetNativeThemeState(),
-                      bounds,
-                      GetNativeThemeParams());
-}
-
-gfx::NativeTheme::ExtraParams
-    ScrollBarButton::GetNativeThemeParams() const {
-  gfx::NativeTheme::ExtraParams params;
-
-  switch (state_) {
-    case CustomButton::BS_HOT:
-      params.scrollbar_arrow.is_hovering = true;
-      break;
-    default:
-      params.scrollbar_arrow.is_hovering = false;
-      break;
-  }
-
-  return params;
-}
-
-gfx::NativeTheme::Part
-    ScrollBarButton::GetNativeThemePart() const {
-  switch (type_) {
-    case UP:
-      return gfx::NativeTheme::kScrollbarUpArrow;
-    case DOWN:
-      return gfx::NativeTheme::kScrollbarDownArrow;
-    case LEFT:
-      return gfx::NativeTheme::kScrollbarLeftArrow;
-    case RIGHT:
-      return gfx::NativeTheme::kScrollbarRightArrow;
-    default:
-      return gfx::NativeTheme::kScrollbarUpArrow;
-  }
-}
-
-gfx::NativeTheme::State
-    ScrollBarButton::GetNativeThemeState() const {
-  gfx::NativeTheme::State state;
-
-  switch (state_) {
-    case CustomButton::BS_HOT:
-      state = gfx::NativeTheme::kHovered;
-      break;
-    case CustomButton::BS_PUSHED:
-      state = gfx::NativeTheme::kPressed;
-      break;
-    case CustomButton::BS_DISABLED:
-      state = gfx::NativeTheme::kDisabled;
-      break;
-    case CustomButton::BS_NORMAL:
-    default:
-      state = gfx::NativeTheme::kNormal;
-      break;
-  }
-
-  return state;
-}
-
-/////////////////////////////////////////////////////////////////////////////
-// ScrollBarThumb
-
-ScrollBarThumb::ScrollBarThumb(BaseScrollBar* scroll_bar)
-    : BaseScrollBarThumb(scroll_bar),
-      scroll_bar_(scroll_bar) {
-}
-
-ScrollBarThumb::~ScrollBarThumb() {
-}
-
-gfx::Size ScrollBarThumb::GetPreferredSize() {
-  const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance();
-  return native_theme->GetPartSize(GetNativeThemePart(),
-                                   GetNativeThemeState(),
-                                   GetNativeThemeParams());
-}
-
-void ScrollBarThumb::OnPaint(gfx::Canvas* canvas) {
-  const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance();
-
-  native_theme->Paint(canvas->AsCanvasSkia(),
-                      GetNativeThemePart(),
-                      GetNativeThemeState(),
-                      GetLocalBounds(),
-                      GetNativeThemeParams());
-}
-
-gfx::NativeTheme::ExtraParams
-    ScrollBarThumb::GetNativeThemeParams() const {
-  gfx::NativeTheme::ExtraParams params;
-
-  switch (GetState()) {
-    case CustomButton::BS_HOT:
-      params.scrollbar_thumb.is_hovering = true;
-      break;
-    default:
-      params.scrollbar_thumb.is_hovering = false;
-      break;
-  }
-
-  return params;
-}
-
-gfx::NativeTheme::Part ScrollBarThumb::GetNativeThemePart() const {
-  if (scroll_bar_->IsHorizontal())
-    return gfx::NativeTheme::kScrollbarHorizontalThumb;
-  return gfx::NativeTheme::kScrollbarVerticalThumb;
-}
-
-gfx::NativeTheme::State ScrollBarThumb::GetNativeThemeState() const {
-  gfx::NativeTheme::State state;
-
-  switch (GetState()) {
-    case CustomButton::BS_HOT:
-      state = gfx::NativeTheme::kHovered;
-      break;
-    case CustomButton::BS_PUSHED:
-      state = gfx::NativeTheme::kPressed;
-      break;
-    case CustomButton::BS_DISABLED:
-      state = gfx::NativeTheme::kDisabled;
-      break;
-    case CustomButton::BS_NORMAL:
-    default:
-      state = gfx::NativeTheme::kNormal;
-      break;
-  }
-
-  return state;
-}
-
-}  // namespace
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeScrollBarViews, public:
-
-NativeScrollBarViews::NativeScrollBarViews(NativeScrollBar* scroll_bar)
-    : BaseScrollBar(scroll_bar->IsHorizontal(),
-                    new ScrollBarThumb(this)),
-      native_scroll_bar_(scroll_bar) {
-  SetController(native_scroll_bar_->GetController());
-
-  if (native_scroll_bar_->IsHorizontal()) {
-    prev_button_ = new ScrollBarButton(this, ScrollBarButton::LEFT);
-    next_button_ = new ScrollBarButton(this, ScrollBarButton::RIGHT);
-
-    part_ = gfx::NativeTheme::kScrollbarHorizontalTrack;
-  } else {
-    prev_button_ = new ScrollBarButton(this, ScrollBarButton::UP);
-    next_button_ = new ScrollBarButton(this, ScrollBarButton::DOWN);
-
-    part_ = gfx::NativeTheme::kScrollbarVerticalTrack;
-  }
-
-  state_ = gfx::NativeTheme::kNormal;
-
-  AddChildView(prev_button_);
-  AddChildView(next_button_);
-
-  prev_button_->set_context_menu_controller(this);
-  next_button_->set_context_menu_controller(this);
-}
-
-NativeScrollBarViews::~NativeScrollBarViews() {
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeScrollBarViews, View overrides:
-
-void NativeScrollBarViews::Layout() {
-  SetBoundsRect(native_scroll_bar_->GetLocalBounds());
-
-  gfx::Size size = prev_button_->GetPreferredSize();
-  prev_button_->SetBounds(0, 0, size.width(), size.height());
-
-  if (native_scroll_bar_->IsHorizontal()) {
-    next_button_->SetBounds(width() - size.width(), 0,
-                            size.width(), size.height());
-  } else {
-    next_button_->SetBounds(0, height() - size.height(),
-                            size.width(), size.height());
-  }
-
-  GetThumb()->SetBoundsRect(GetTrackBounds());
-}
-
-void NativeScrollBarViews::OnPaint(gfx::Canvas* canvas) {
-  const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance();
-  gfx::Rect bounds = GetTrackBounds();
-
-  params_.scrollbar_track.track_x = bounds.x();
-  params_.scrollbar_track.track_y = bounds.y();
-  params_.scrollbar_track.track_width = bounds.width();
-  params_.scrollbar_track.track_height = bounds.height();
-
-
-  native_theme->Paint(canvas->AsCanvasSkia(),
-                      part_,
-                      state_,
-                      bounds,
-                      params_);
-}
-
-gfx::Size NativeScrollBarViews::GetPreferredSize() {
-  if (native_scroll_bar_->IsHorizontal())
-    return gfx::Size(0, GetHorizontalScrollBarHeight());
-  return gfx::Size(GetVerticalScrollBarWidth(), 0);
-}
-
-int NativeScrollBarViews::GetLayoutSize() const {
-  gfx::Size size = prev_button_->GetPreferredSize();
-  return IsHorizontal() ? size.height() : size.width();
-}
-
-void NativeScrollBarViews::ScrollToPosition(int position) {
-  GetController()->ScrollToPosition(native_scroll_bar_, position);
-}
-
-int NativeScrollBarViews::GetScrollIncrement(bool is_page,
-                                             bool is_positive) {
-  return GetController()->GetScrollIncrement(native_scroll_bar_,
-                                             is_page,
-                                             is_positive);
-}
-
-//////////////////////////////////////////////////////////////////////////////
-// BaseButton::ButtonListener overrides:
-
-void NativeScrollBarViews::ButtonPressed(Button* sender,
-                                         const views::Event& event) {
-  if (sender == prev_button_) {
-    ScrollByAmount(SCROLL_PREV_LINE);
-  } else if (sender == next_button_) {
-    ScrollByAmount(SCROLL_NEXT_LINE);
-  }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeScrollBarViews, NativeScrollBarWrapper overrides:
-
-int NativeScrollBarViews::GetPosition() const {
-  return BaseScrollBar::GetPosition();
-}
-
-View* NativeScrollBarViews::GetView() {
-  return this;
-}
-
-void NativeScrollBarViews::Update(int viewport_size,
-                                  int content_size,
-                                  int current_pos) {
-  BaseScrollBar::Update(viewport_size, content_size, current_pos);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeScrollBarViews, private:
-
-gfx::Rect NativeScrollBarViews::GetTrackBounds() const {
-  gfx::Rect bounds = GetLocalBounds();
-  gfx::Size size = prev_button_->GetPreferredSize();
-  BaseScrollBarThumb* thumb = GetThumb();
-
-  if (native_scroll_bar_->IsHorizontal()) {
-    bounds.set_x(bounds.x() + size.width());
-    bounds.set_width(bounds.width() - 2 * size.width());
-    bounds.set_height(thumb->GetPreferredSize().height());
-  } else {
-    bounds.set_y(bounds.y() + size.height());
-    bounds.set_height(bounds.height() - 2 * size.height());
-    bounds.set_width(thumb->GetPreferredSize().width());
-  }
-
-  return bounds;
-}
-
-}  // namespace views