mash: Convert ash shelf overflow bubble to wm common types

ash/shelf/overflow_bubble_view.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 "ash/shelf/overflow_bubble_view.h"
-
-#include <algorithm>
-
-#include "ash/common/material_design/material_design_controller.h"
-#include "ash/common/shelf/shelf_constants.h"
-#include "ash/common/shell_window_ids.h"
-#include "ash/root_window_controller.h"
-#include "ash/shelf/shelf.h"
-#include "ash/shelf/shelf_view.h"
-#include "ash/shell.h"
-#include "ui/display/display.h"
-#include "ui/display/screen.h"
-#include "ui/events/event.h"
-#include "ui/gfx/geometry/insets.h"
-#include "ui/views/bubble/bubble_frame_view.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-namespace {
-
-// Max bubble size to screen size ratio.
-const float kMaxBubbleSizeToScreenRatio = 0.5f;
-
-// Inner padding in pixels for shelf view inside bubble.
-const int kPadding = 2;
-
-// Padding space in pixels between ShelfView's left/top edge to its contents.
-const int kShelfViewLeadingInset = 8;
-
-}  // namespace
-
-OverflowBubbleView::OverflowBubbleView() : shelf_view_(NULL) {}
-
-OverflowBubbleView::~OverflowBubbleView() {}
-
-void OverflowBubbleView::InitOverflowBubble(views::View* anchor,
-                                            ShelfView* shelf_view) {
-  shelf_view_ = shelf_view;
-
-  SetAnchorView(anchor);
-  set_arrow(GetBubbleArrow());
-  set_mirror_arrow_in_rtl(false);
-  set_background(NULL);
-  SkColor color = MaterialDesignController::IsShelfMaterial()
-                      ? kShelfBaseColor
-                      : SkColorSetA(kShelfBaseColor,
-                                    GetShelfConstant(SHELF_BACKGROUND_ALPHA));
-  set_color(color);
-  set_margins(gfx::Insets(kPadding, kPadding, kPadding, kPadding));
-  // Overflow bubble should not get focus. If it get focus when it is shown,
-  // active state item is changed to running state.
-  set_can_activate(false);
-
-  // Makes bubble view has a layer and clip its children layers.
-  SetPaintToLayer(true);
-  layer()->SetFillsBoundsOpaquely(false);
-  layer()->SetMasksToBounds(true);
-
-  set_parent_window(Shell::GetContainer(
-      anchor->GetWidget()->GetNativeWindow()->GetRootWindow(),
-      kShellWindowId_ShelfBubbleContainer));
-  views::BubbleDialogDelegateView::CreateBubble(this);
-  AddChildView(shelf_view_);
-}
-
-bool OverflowBubbleView::IsHorizontalAlignment() const {
-  return shelf_view_ ? shelf_view_->shelf()->IsHorizontalAlignment() : false;
-}
-
-const gfx::Size OverflowBubbleView::GetContentsSize() const {
-  return static_cast<views::View*>(shelf_view_)->GetPreferredSize();
-}
-
-// Gets arrow location based on shelf alignment.
-views::BubbleBorder::Arrow OverflowBubbleView::GetBubbleArrow() const {
-  if (!shelf_view_)
-    return views::BubbleBorder::NONE;
-  return shelf_view_->shelf()->SelectValueForShelfAlignment(
-      views::BubbleBorder::BOTTOM_LEFT, views::BubbleBorder::LEFT_TOP,
-      views::BubbleBorder::RIGHT_TOP);
-}
-
-void OverflowBubbleView::ScrollByXOffset(int x_offset) {
-  const gfx::Rect visible_bounds(GetContentsBounds());
-  const gfx::Size contents_size(GetContentsSize());
-
-  DCHECK_GE(contents_size.width(), visible_bounds.width());
-  int x = std::min(contents_size.width() - visible_bounds.width(),
-                   std::max(0, scroll_offset_.x() + x_offset));
-  scroll_offset_.set_x(x);
-}
-
-void OverflowBubbleView::ScrollByYOffset(int y_offset) {
-  const gfx::Rect visible_bounds(GetContentsBounds());
-  const gfx::Size contents_size(GetContentsSize());
-
-  DCHECK_GE(contents_size.width(), visible_bounds.width());
-  int y = std::min(contents_size.height() - visible_bounds.height(),
-                   std::max(0, scroll_offset_.y() + y_offset));
-  scroll_offset_.set_y(y);
-}
-
-gfx::Size OverflowBubbleView::GetPreferredSize() const {
-  gfx::Size preferred_size = GetContentsSize();
-
-  const gfx::Rect monitor_rect =
-      display::Screen::GetScreen()
-          ->GetDisplayNearestPoint(GetAnchorRect().CenterPoint())
-          .work_area();
-  if (!monitor_rect.IsEmpty()) {
-    if (IsHorizontalAlignment()) {
-      preferred_size.set_width(
-          std::min(preferred_size.width(),
-                   static_cast<int>(monitor_rect.width() *
-                                    kMaxBubbleSizeToScreenRatio)));
-    } else {
-      preferred_size.set_height(
-          std::min(preferred_size.height(),
-                   static_cast<int>(monitor_rect.height() *
-                                    kMaxBubbleSizeToScreenRatio)));
-    }
-  }
-
-  return preferred_size;
-}
-
-void OverflowBubbleView::Layout() {
-  shelf_view_->SetBoundsRect(gfx::Rect(
-      gfx::PointAtOffsetFromOrigin(-scroll_offset_), GetContentsSize()));
-}
-
-void OverflowBubbleView::ChildPreferredSizeChanged(views::View* child) {
-  // When contents size is changed, ContentsBounds should be updated before
-  // calculating scroll offset.
-  SizeToContents();
-
-  // Ensures |shelf_view_| is still visible.
-  if (IsHorizontalAlignment())
-    ScrollByXOffset(0);
-  else
-    ScrollByYOffset(0);
-  Layout();
-}
-
-bool OverflowBubbleView::OnMouseWheel(const ui::MouseWheelEvent& event) {
-  // The MouseWheelEvent was changed to support both X and Y offsets
-  // recently, but the behavior of this function was retained to continue
-  // using Y offsets only. Might be good to simply scroll in both
-  // directions as in OverflowBubbleView::OnScrollEvent.
-  if (IsHorizontalAlignment())
-    ScrollByXOffset(-event.y_offset());
-  else
-    ScrollByYOffset(-event.y_offset());
-  Layout();
-
-  return true;
-}
-
-void OverflowBubbleView::OnScrollEvent(ui::ScrollEvent* event) {
-  ScrollByXOffset(-event->x_offset());
-  ScrollByYOffset(-event->y_offset());
-  Layout();
-  event->SetHandled();
-}
-
-int OverflowBubbleView::GetDialogButtons() const {
-  return ui::DIALOG_BUTTON_NONE;
-}
-
-gfx::Rect OverflowBubbleView::GetBubbleBounds() {
-  views::BubbleBorder* border = GetBubbleFrameView()->bubble_border();
-  gfx::Insets bubble_insets = border->GetInsets();
-
-  const int border_size = views::BubbleBorder::is_arrow_on_horizontal(arrow())
-                              ? bubble_insets.left()
-                              : bubble_insets.top();
-  const int arrow_offset = border_size + kPadding + kShelfViewLeadingInset +
-                           GetShelfConstant(SHELF_SIZE) / 2;
-
-  const gfx::Size content_size = GetPreferredSize();
-  border->set_arrow_offset(arrow_offset);
-
-  const gfx::Rect anchor_rect = GetAnchorRect();
-  gfx::Rect bubble_rect = GetBubbleFrameView()->GetUpdatedWindowBounds(
-      anchor_rect, content_size, false);
-
-  gfx::Rect monitor_rect =
-      display::Screen::GetScreen()
-          ->GetDisplayNearestPoint(anchor_rect.CenterPoint())
-          .work_area();
-
-  int offset = 0;
-  if (views::BubbleBorder::is_arrow_on_horizontal(arrow())) {
-    if (bubble_rect.x() < monitor_rect.x())
-      offset = monitor_rect.x() - bubble_rect.x();
-    else if (bubble_rect.right() > monitor_rect.right())
-      offset = monitor_rect.right() - bubble_rect.right();
-
-    bubble_rect.Offset(offset, 0);
-    border->set_arrow_offset(anchor_rect.CenterPoint().x() - bubble_rect.x());
-  } else {
-    if (bubble_rect.y() < monitor_rect.y())
-      offset = monitor_rect.y() - bubble_rect.y();
-    else if (bubble_rect.bottom() > monitor_rect.bottom())
-      offset = monitor_rect.bottom() - bubble_rect.bottom();
-
-    bubble_rect.Offset(0, offset);
-    border->set_arrow_offset(anchor_rect.CenterPoint().y() - bubble_rect.y());
-  }
-
-  GetBubbleFrameView()->SchedulePaint();
-  return bubble_rect;
-}
-
-}  // namespace ash