src/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/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/corewm/window_animations.h"
  14 #include "ui/views/layout/fill_layout.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_use_focusless(true);
  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::FadeOut() {
  61   StartFade(false);
  62 }
  63
  64 void ModeIndicatorView::ShowAndFadeOut() {
  65   views::corewm::SetWindowVisibilityAnimationTransition(
  66       GetWidget()->GetNativeView(),
  67       views::corewm::ANIMATE_HIDE);
  68   GetWidget()->Show();
  69   timer_.Start(FROM_HERE,
  70                base::TimeDelta::FromMilliseconds(kShowingDuration),
  71                this,
  72                &ModeIndicatorView::FadeOut);
  73 }
  74
  75 gfx::Size ModeIndicatorView::GetPreferredSize() {
  76   gfx::Size size = label_view_->GetPreferredSize();
  77   size.SetToMax(gfx::Size(kMinSize, kMinSize));
  78   return size;
  79 }
  80
  81 void ModeIndicatorView::Init() {
  82   SetLayoutManager(new views::FillLayout());
  83   AddChildView(label_view_);
  84
  85   SetAnchorRect(cursor_bounds_);
  86 }
  87
  88 views::NonClientFrameView* ModeIndicatorView::CreateNonClientFrameView(
  89     views::Widget* widget) {
  90   views::BubbleFrameView* frame = new ModeIndicatorFrameView(margins());
  91   // arrow adjustment in BubbleDelegateView is unnecessary because arrow
  92   // of this bubble is always center.
  93   frame->SetBubbleBorder(scoped_ptr<views::BubbleBorder>(
  94       new views::BubbleBorder(arrow(), shadow(), color())));
  95   return frame;
  96 }
  97
  98 }  // namespace ime
  99 }  // namespace ash