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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ash/ime/mode_indicator_view.h"
      6 
      7 #include "base/logging.h"
      8 #include "ui/gfx/display.h"
      9 #include "ui/gfx/screen.h"
     10 #include "ui/views/bubble/bubble_delegate.h"
     11 #include "ui/views/bubble/bubble_frame_view.h"
     12 #include "ui/views/controls/label.h"
     13 #include "ui/views/layout/fill_layout.h"
     14 #include "ui/wm/core/window_animations.h"
     15 
     16 namespace ash {
     17 namespace ime {
     18 
     19 namespace {
     20 // Minimum size of inner contents in pixel.
     21 // 43 is the designed size including the default margin (6 * 2).
     22 const int kMinSize = 31;
     23 
     24 // After this duration in msec, the mode inicator will be fading out.
     25 const int kShowingDuration = 500;
     26 
     27 class ModeIndicatorFrameView : public views::BubbleFrameView {
     28  public:
     29   explicit ModeIndicatorFrameView(const gfx::Insets& content_margins)
     30       : views::BubbleFrameView(content_margins) {}
     31   virtual ~ModeIndicatorFrameView() {}
     32 
     33  private:
     34   // views::BubbleFrameView overrides:
     35   virtual gfx::Rect GetAvailableScreenBounds(const gfx::Rect& rect) OVERRIDE {
     36     return gfx::Screen::GetNativeScreen()->GetDisplayNearestPoint(
     37         rect.CenterPoint()).bounds();
     38   }
     39 
     40   DISALLOW_COPY_AND_ASSIGN(ModeIndicatorFrameView);
     41 };
     42 
     43 }  // namespace
     44 
     45 
     46 ModeIndicatorView::ModeIndicatorView(gfx::NativeView parent,
     47                                      const gfx::Rect& cursor_bounds,
     48                                      const base::string16& label)
     49     : cursor_bounds_(cursor_bounds),
     50       label_view_(new views::Label(label)) {
     51   set_can_activate(false);
     52   set_accept_events(false);
     53   set_parent_window(parent);
     54   set_shadow(views::BubbleBorder::NO_SHADOW);
     55   set_arrow(views::BubbleBorder::TOP_CENTER);
     56 }
     57 
     58 ModeIndicatorView::~ModeIndicatorView() {}
     59 
     60 void ModeIndicatorView::ShowAndFadeOut() {
     61   wm::SetWindowVisibilityAnimationTransition(
     62       GetWidget()->GetNativeView(),
     63       wm::ANIMATE_HIDE);
     64   GetWidget()->Show();
     65   timer_.Start(FROM_HERE,
     66                base::TimeDelta::FromMilliseconds(kShowingDuration),
     67                GetWidget(),
     68                &views::Widget::Close);
     69 }
     70 
     71 gfx::Size ModeIndicatorView::GetPreferredSize() const {
     72   gfx::Size size = label_view_->GetPreferredSize();
     73   size.SetToMax(gfx::Size(kMinSize, kMinSize));
     74   return size;
     75 }
     76 
     77 void ModeIndicatorView::Init() {
     78   SetLayoutManager(new views::FillLayout());
     79   AddChildView(label_view_);
     80 
     81   SetAnchorRect(cursor_bounds_);
     82 }
     83 
     84 views::NonClientFrameView* ModeIndicatorView::CreateNonClientFrameView(
     85     views::Widget* widget) {
     86   views::BubbleFrameView* frame = new ModeIndicatorFrameView(margins());
     87   // arrow adjustment in BubbleDelegateView is unnecessary because arrow
     88   // of this bubble is always center.
     89   frame->SetBubbleBorder(scoped_ptr<views::BubbleBorder>(
     90       new views::BubbleBorder(arrow(), shadow(), color())));
     91   return frame;
     92 }
     93 
     94 }  // namespace ime
     95 }  // namespace ash
     96