ash/ime/mode_indicator_view.cc

   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/views/bubble/bubble_delegate.h"
   9 #include "ui/views/controls/label.h"
  10 #include "ui/views/corewm/window_animations.h"
  11 #include "ui/views/layout/fill_layout.h"
  12
  13 namespace ash {
  14 namespace ime {
  15
  16 namespace {
  17 // Minimum size of inner contents in pixel.
  18 // 43 is the designed size including the default margin (6 * 2).
  19 const int kMinSize = 31;
  20
  21 // After this duration in msec, the mode inicator will be fading out.
  22 const int kShowingDuration = 500;
  23 }  // namespace
  24
  25
  26 ModeIndicatorView::ModeIndicatorView(gfx::NativeView parent,
  27                                      const gfx::Rect& cursor_bounds,
  28                                      const base::string16& label)
  29     : cursor_bounds_(cursor_bounds),
  30       label_view_(new views::Label(label)) {
  31   set_use_focusless(true);
  32   set_accept_events(false);
  33   set_parent_window(parent);
  34   set_shadow(views::BubbleBorder::NO_SHADOW);
  35   set_arrow(views::BubbleBorder::TOP_CENTER);
  36 }
  37
  38 ModeIndicatorView::~ModeIndicatorView() {}
  39
  40 void ModeIndicatorView::FadeOut() {
  41   StartFade(false);
  42 }
  43
  44 void ModeIndicatorView::ShowAndFadeOut() {
  45   views::corewm::SetWindowVisibilityAnimationTransition(
  46       GetWidget()->GetNativeView(),
  47       views::corewm::ANIMATE_HIDE);
  48   GetWidget()->Show();
  49   timer_.Start(FROM_HERE,
  50                base::TimeDelta::FromMilliseconds(kShowingDuration),
  51                this,
  52                &ModeIndicatorView::FadeOut);
  53 }
  54
  55 gfx::Size ModeIndicatorView::GetPreferredSize() {
  56   gfx::Size size = label_view_->GetPreferredSize();
  57   size.SetToMax(gfx::Size(kMinSize, kMinSize));
  58   return size;
  59 }
  60
  61 void ModeIndicatorView::Init() {
  62   SetLayoutManager(new views::FillLayout());
  63   AddChildView(label_view_);
  64
  65   SetAnchorRect(cursor_bounds_);
  66 }
  67
  68 }  // namespace ime
  69 }  // namespace ash