Move some more WM functionality down into ash.

ui/aura_shell/toplevel_frame_view.cc

Index: ui/aura_shell/toplevel_frame_view.cc
===================================================================
--- ui/aura_shell/toplevel_frame_view.cc	(revision 115655)
+++ ui/aura_shell/toplevel_frame_view.cc	(working copy)
@@ -1,487 +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 "ui/aura_shell/toplevel_frame_view.h"
-
-#include "grit/ui_resources.h"
-#include "ui/aura/cursor.h"
-#include "ui/base/animation/throb_animation.h"
-#include "ui/base/hit_test.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/gfx/canvas.h"
-#include "ui/views/controls/button/custom_button.h"
-#include "ui/views/widget/widget.h"
-#include "ui/views/widget/widget_delegate.h"
-
-namespace aura_shell {
-namespace internal {
-
-namespace {
-// The thickness of the left, right and bottom edges of the frame.
-const int kFrameBorderThickness = 8;
-const int kFrameOpacity = 50;
-// The color used to fill the frame.
-const SkColor kFrameColor = SkColorSetARGB(kFrameOpacity, 0, 0, 0);
-const int kFrameBorderHiddenOpacity = 0;
-const int kFrameBorderVisibleOpacity = kFrameOpacity;
-// How long the hover animation takes if uninterrupted.
-const int kHoverFadeDurationMs = 250;
-}  // namespace
-
-// Buttons for window controls - close, zoom, etc.
-class WindowControlButton : public views::CustomButton {
- public:
-  WindowControlButton(views::ButtonListener* listener,
-                      SkColor color,
-                      const SkBitmap& icon)
-      : views::CustomButton(listener),
-        color_(color),
-        icon_(icon) {
-  }
-  virtual ~WindowControlButton() {}
-
-  // Overridden from views::View:
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
-    canvas->FillRect(GetBackgroundColor(), GetLocalBounds());
-    canvas->DrawBitmapInt(icon_, 0, 0);
-  }
-  virtual gfx::Size GetPreferredSize() OVERRIDE {
-    gfx::Size size(icon_.width(), icon_.height());
-    size.Enlarge(3, 2);
-    return size;
-  }
-
- private:
-  SkColor GetBackgroundColor() {
-    return SkColorSetARGB(hover_animation_->CurrentValueBetween(0, 150),
-                          SkColorGetR(color_),
-                          SkColorGetG(color_),
-                          SkColorGetB(color_));
-  }
-
-  SkColor color_;
-  SkBitmap icon_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowControlButton);
-};
-
-// Base class for all animatable frame components such as sizing borders and
-// the window's caption. Provides shared animation and event-handling logic.
-class FrameComponent : public views::View,
-                       public ui::AnimationDelegate {
- public:
-  virtual ~FrameComponent() {
-  }
-
-  // Control animations.
-  void Show() {
-    animation_->Show();
-  }
-  void Hide() {
-    animation_->Hide();
-  }
-
-  // Current animation state.
-  bool IsShowing() const {
-    return animation_->IsShowing();
-  }
-  bool IsHiding() const {
-    return animation_->IsClosing();
-  }
-
-  // Returns true if the view ignores events to itself or its children at the
-  // specified point in its parent's coordinates. By default, any events within
-  // the bounds of this view are ignored so that the parent (the NCFV) can
-  // handle them instead. Derived classes can override to disable this for some
-  // of their children.
-  virtual bool IgnoreEventsForPoint(const gfx::Point& point) {
-    gfx::Point translated_point(point);
-    ConvertPointToView(parent(), this, &translated_point);
-    return HitTest(translated_point);
-  }
-
- protected:
-  FrameComponent()
-      : ALLOW_THIS_IN_INITIALIZER_LIST(
-            animation_(new ui::SlideAnimation(this))) {
-    animation_->SetSlideDuration(kHoverFadeDurationMs);
-  }
-
-  // Most of the frame components are rendered with a transparent bg.
-  void PaintTransparentBackground(gfx::Canvas* canvas) {
-    // Fill with current opacity value.
-    int opacity = animation_->CurrentValueBetween(kFrameBorderHiddenOpacity,
-                                                  kFrameBorderVisibleOpacity);
-    canvas->FillRect(SkColorSetARGB(opacity,
-                                    SkColorGetR(kFrameColor),
-                                    SkColorGetG(kFrameColor),
-                                    SkColorGetB(kFrameColor)),
-                     GetLocalBounds());
-  }
-
-  // Overridden from ui::AnimationDelegate:
-  virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE {
-    SchedulePaint();
-  }
-
- private:
-  scoped_ptr<ui::SlideAnimation> animation_;
-
-  DISALLOW_COPY_AND_ASSIGN(FrameComponent);
-};
-
-// A view that renders the title bar of the window, and also hosts the window
-// controls.
-class WindowCaption : public FrameComponent,
-                      public views::ButtonListener {
- public:
-  WindowCaption() {
-    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-    close_button_ =
-        new WindowControlButton(this, SK_ColorRED,
-                                *rb.GetBitmapNamed(IDR_AURA_WINDOW_CLOSE_ICON));
-    zoom_button_ =
-        new WindowControlButton(this, SK_ColorGREEN,
-                                *rb.GetBitmapNamed(IDR_AURA_WINDOW_ZOOM_ICON));
-    AddChildView(close_button_);
-    AddChildView(zoom_button_);
-  }
-  virtual ~WindowCaption() {}
-
-  // Returns the hit-test code for the specified point in parent coordinates.
-  int NonClientHitTest(const gfx::Point& point) {
-    gfx::Point translated_point(point);
-    View::ConvertPointToView(parent(), this, &translated_point);
-    // The window controls come second.
-    if (close_button_->GetMirroredBounds().Contains(translated_point))
-      return HTCLOSE;
-    else if (zoom_button_->GetMirroredBounds().Contains(translated_point))
-      return HTMAXBUTTON;
-    return HTNOWHERE;
-  }
-
-  // Overridden from FrameComponent:
-  virtual bool IgnoreEventsForPoint(const gfx::Point& point) OVERRIDE {
-    gfx::Point translated_point(point);
-    ConvertPointToView(parent(), this, &translated_point);
-    if (PointIsInChildView(close_button_, translated_point))
-      return false;
-    if (PointIsInChildView(zoom_button_, translated_point))
-      return false;
-    return FrameComponent::IgnoreEventsForPoint(point);
-  }
-
-  // Overridden from views::View:
-  virtual gfx::Size GetPreferredSize() OVERRIDE {
-    return gfx::Size(0, close_button_->GetPreferredSize().height());
-  }
-
- private:
-  // Returns true if the specified |point| in this view's coordinates hit tests
-  // against |child|, a child view of this view.
-  bool PointIsInChildView(views::View* child,
-                          const gfx::Point& point) const {
-    gfx::Point child_point(point);
-    ConvertPointToView(this, child, &child_point);
-    return child->HitTest(child_point);
-  }
-
-  // Overridden from views::View:
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
-    PaintTransparentBackground(canvas);
-  }
-  virtual void Layout() OVERRIDE {
-    gfx::Size close_button_ps = close_button_->GetPreferredSize();
-    close_button_->SetBoundsRect(
-        gfx::Rect(width() - close_button_ps.width(),
-                  0, close_button_ps.width(), close_button_ps.height()));
-
-    gfx::Size zoom_button_ps = zoom_button_->GetPreferredSize();
-    zoom_button_->SetBoundsRect(
-        gfx::Rect(close_button_->x() - zoom_button_ps.width(), 0,
-                  zoom_button_ps.width(), zoom_button_ps.height()));
-  }
-
-  // Overridden from views::ButtonListener:
-  virtual void ButtonPressed(views::Button* sender,
-                             const views::Event& event) OVERRIDE {
-    if (sender == close_button_) {
-      GetWidget()->Close();
-    } else if (sender == zoom_button_) {
-      if (GetWidget()->IsMaximized())
-        GetWidget()->Restore();
-      else
-        GetWidget()->Maximize();
-    }
-  }
-
-  views::Button* close_button_;
-  views::Button* zoom_button_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowCaption);
-};
-
-// A class that renders the sizing border that appears when the user moves
-// their mouse over a sizing edge. This view is not actually responsible for
-// resizing the window, the EventFilter is.
-class SizingBorder : public FrameComponent {
- public:
-  SizingBorder() {}
-  virtual ~SizingBorder() {}
-
-  void Configure(const gfx::Rect& hidden_bounds,
-                 const gfx::Rect& visible_bounds) {
-    hidden_bounds_ = hidden_bounds;
-    visible_bounds_ = visible_bounds;
-    SetBoundsRect(hidden_bounds_);
-  }
-
- protected:
-  // Overridden from ui::AnimationDelegate:
-  virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE {
-    gfx::Rect current_bounds = animation->CurrentValueBetween(hidden_bounds_,
-                                                              visible_bounds_);
-    SetBoundsRect(current_bounds);
-    FrameComponent::AnimationProgressed(animation);
-  }
-
- private:
-  // Overridden from views::View:
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
-    PaintTransparentBackground(canvas);
-  }
-
-  // Each of these represents the hidden/visible states of the sizing border.
-  // When the view is shown or hidden it animates between them.
-  gfx::Rect hidden_bounds_;
-  gfx::Rect visible_bounds_;
-
-  DISALLOW_COPY_AND_ASSIGN(SizingBorder);
-};
-
-////////////////////////////////////////////////////////////////////////////////
-// ToplevelFrameView, public:
-
-ToplevelFrameView::ToplevelFrameView()
-    : current_hittest_code_(HTNOWHERE),
-      caption_(new WindowCaption),
-      left_edge_(new SizingBorder),
-      right_edge_(new SizingBorder),
-      bottom_edge_(new SizingBorder) {
-  AddChildView(caption_);
-  AddChildView(left_edge_);
-  AddChildView(right_edge_);
-  AddChildView(bottom_edge_);
-}
-
-ToplevelFrameView::~ToplevelFrameView() {
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// ToplevelFrameView, private:
-
-int ToplevelFrameView::NonClientBorderThickness() const {
-  return kFrameBorderThickness;
-}
-
-int ToplevelFrameView::NonClientTopBorderHeight() const {
-  return caption_->GetPreferredSize().height();
-}
-
-int ToplevelFrameView::NonClientHitTestImpl(const gfx::Point& point) {
-  // Sanity check.
-  if (!GetLocalBounds().Contains(point))
-    return HTNOWHERE;
-
-  // The client view gets first crack at claiming the point.
-  int frame_component = GetWidget()->client_view()->NonClientHitTest(point);
-  if (frame_component != HTNOWHERE)
-    return frame_component;
-
-  frame_component = caption_->NonClientHitTest(point);
-  if (frame_component != HTNOWHERE)
-    return frame_component;
-
-  // Finally other portions of the frame/sizing border.
-  frame_component =
-      GetHTComponentForFrame(point,
-                             NonClientBorderThickness(),
-                             NonClientBorderThickness(),
-                             NonClientBorderThickness(),
-                             NonClientBorderThickness(),
-                             GetWidget()->widget_delegate()->CanResize());
-
-  // Coerce HTCAPTION as a fallback.
-  return frame_component == HTNOWHERE ? HTCAPTION : frame_component;
-}
-
-void ToplevelFrameView::ShowFrameComponent(FrameComponent* frame_component) {
-  if (frame_component && !frame_component->IsShowing())
-    frame_component->Show();
-  if (caption_ != frame_component && !caption_->IsHiding())
-    caption_->Hide();
-  if (left_edge_ != frame_component && !left_edge_->IsHiding())
-    left_edge_->Hide();
-  if (right_edge_ != frame_component && !right_edge_->IsHiding())
-    right_edge_->Hide();
-  if (bottom_edge_ != frame_component && !bottom_edge_->IsHiding())
-    bottom_edge_->Hide();
-}
-
-gfx::Rect ToplevelFrameView::GetHiddenBoundsForSizingBorder(
-    int frame_component) const {
-  int border_size = NonClientBorderThickness();
-  int caption_height = NonClientTopBorderHeight();
-  switch (frame_component) {
-    case HTLEFT:
-      return gfx::Rect(border_size, caption_height, border_size,
-                       height() - border_size - caption_height);
-    case HTBOTTOM:
-      return gfx::Rect(border_size, height() - 2 * border_size,
-                       width() - 2 * border_size, border_size);
-    case HTRIGHT:
-      return gfx::Rect(width() - 2 * border_size, caption_height, border_size,
-                       height() - border_size - caption_height);
-    default:
-      break;
-  }
-  return gfx::Rect();
-}
-
-gfx::Rect ToplevelFrameView::GetVisibleBoundsForSizingBorder(
-    int frame_component) const {
-  int border_size = NonClientBorderThickness();
-  int caption_height = NonClientTopBorderHeight();
-  switch (frame_component) {
-    case HTLEFT:
-      return gfx::Rect(0, caption_height, border_size,
-                       height() - border_size - caption_height);
-    case HTBOTTOM:
-      return gfx::Rect(border_size, height() - border_size,
-                       width() - 2 * border_size, border_size);
-    case HTRIGHT:
-      return gfx::Rect(width() - border_size, caption_height, border_size,
-                       height() - border_size - caption_height);
-    default:
-      break;
-  }
-  return gfx::Rect();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// ToplevelFrameView, views::NonClientFrameView overrides:
-
-gfx::Rect ToplevelFrameView::GetBoundsForClientView() const {
-  return client_view_bounds_;
-}
-
-gfx::Rect ToplevelFrameView::GetWindowBoundsForClientBounds(
-    const gfx::Rect& client_bounds) const {
-  gfx::Rect window_bounds = client_bounds;
-  window_bounds.Inset(-NonClientBorderThickness(),
-                      -NonClientTopBorderHeight(),
-                      -NonClientBorderThickness(),
-                      -NonClientBorderThickness());
-  return window_bounds;
-}
-
-int ToplevelFrameView::NonClientHitTest(const gfx::Point& point) {
-  current_hittest_code_ = NonClientHitTestImpl(point);
-  return current_hittest_code_;
-}
-
-void ToplevelFrameView::GetWindowMask(const gfx::Size& size,
-                                      gfx::Path* window_mask) {
-  // Nothing.
-}
-
-void ToplevelFrameView::ResetWindowControls() {
-  NOTIMPLEMENTED();
-}
-
-void ToplevelFrameView::UpdateWindowIcon() {
-  NOTIMPLEMENTED();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// ToplevelFrameView, views::View overrides:
-
-void ToplevelFrameView::Layout() {
-  client_view_bounds_ = GetLocalBounds();
-  client_view_bounds_.Inset(NonClientBorderThickness(),
-                            NonClientTopBorderHeight(),
-                            NonClientBorderThickness(),
-                            NonClientBorderThickness());
-
-  caption_->SetBounds(NonClientBorderThickness(), 0,
-                      width() - 2 * NonClientBorderThickness(),
-                      NonClientTopBorderHeight());
-
-  left_edge_->Configure(GetHiddenBoundsForSizingBorder(HTLEFT),
-                        GetVisibleBoundsForSizingBorder(HTLEFT));
-  right_edge_->Configure(GetHiddenBoundsForSizingBorder(HTRIGHT),
-                         GetVisibleBoundsForSizingBorder(HTRIGHT));
-  bottom_edge_->Configure(GetHiddenBoundsForSizingBorder(HTBOTTOM),
-                          GetVisibleBoundsForSizingBorder(HTBOTTOM));
-}
-
-void ToplevelFrameView::OnMouseMoved(const views::MouseEvent& event) {
-  switch (current_hittest_code_) {
-    case HTLEFT:
-      ShowFrameComponent(left_edge_);
-      break;
-    case HTRIGHT:
-      ShowFrameComponent(right_edge_);
-      break;
-    case HTBOTTOM:
-      ShowFrameComponent(bottom_edge_);
-      break;
-    case HTCAPTION:
-      ShowFrameComponent(caption_);
-      break;
-    default:
-      break;
-  }
-}
-
-void ToplevelFrameView::OnMouseExited(const views::MouseEvent& event) {
-  ShowFrameComponent(NULL);
-}
-
-views::View* ToplevelFrameView::GetEventHandlerForPoint(
-    const gfx::Point& point) {
-  if (left_edge_->IgnoreEventsForPoint(point) ||
-      right_edge_->IgnoreEventsForPoint(point) ||
-      bottom_edge_->IgnoreEventsForPoint(point) ||
-      caption_->IgnoreEventsForPoint(point)) {
-    return this;
-  }
-  return View::GetEventHandlerForPoint(point);
-}
-
-gfx::NativeCursor ToplevelFrameView::GetCursor(const views::MouseEvent& event) {
-  switch (current_hittest_code_) {
-    case HTBOTTOM:
-      return aura::kCursorSouthResize;
-    case HTBOTTOMLEFT:
-      return aura::kCursorSouthWestResize;
-    case HTBOTTOMRIGHT:
-      return aura::kCursorSouthEastResize;
-    case HTLEFT:
-      return aura::kCursorWestResize;
-    case HTRIGHT:
-      return aura::kCursorEastResize;
-    case HTTOP:
-      return aura::kCursorNorthResize;
-    case HTTOPLEFT:
-      return aura::kCursorNorthWestResize;
-    case HTTOPRIGHT:
-      return aura::kCursorNorthEastResize;
-    default:
-      return aura::kCursorNull;
-  }
-}
-
-}  // namespace internal
-}  // namespace aura_shell