ash/system/user/button_from_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/system/user/button_from_view.h"
   6
   7 #include "ash/ash_constants.h"
   8 #include "ash/system/tray/tray_constants.h"
   9 #include "ash/system/tray/tray_utils.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "ui/accessibility/ax_view_state.h"
  13 #include "ui/gfx/canvas.h"
  14 #include "ui/views/background.h"
  15 #include "ui/views/border.h"
  16 #include "ui/views/layout/box_layout.h"
  17
  18 namespace ash {
  19
  20 namespace {
  21
  22 // The border color of the user button.
  23 const SkColor kBorderColor = 0xffdcdcdc;
  24
  25 }  // namespace
  26
  27 namespace tray {
  28
  29 ButtonFromView::ButtonFromView(views::View* content,
  30                                views::ButtonListener* listener,
  31                                bool highlight_on_hover,
  32                                const gfx::Insets& tab_frame_inset)
  33     : CustomButton(listener),
  34       content_(content),
  35       highlight_on_hover_(highlight_on_hover),
  36       button_hovered_(false),
  37       show_border_(false),
  38       tab_frame_inset_(tab_frame_inset) {
  39   set_notify_enter_exit_on_child(true);
  40   SetLayoutManager(
  41       new views::BoxLayout(views::BoxLayout::kHorizontal, 1, 1, 0));
  42   AddChildView(content_);
  43   ShowActive();
  44   // Only make it focusable when we are active/interested in clicks.
  45   if (listener)
  46     SetFocusable(true);
  47 }
  48
  49 ButtonFromView::~ButtonFromView() {}
  50
  51 void ButtonFromView::ForceBorderVisible(bool show) {
  52   show_border_ = show;
  53   ShowActive();
  54 }
  55
  56 void ButtonFromView::OnMouseEntered(const ui::MouseEvent& event) {
  57   button_hovered_ = true;
  58   ShowActive();
  59 }
  60
  61 void ButtonFromView::OnMouseExited(const ui::MouseEvent& event) {
  62   button_hovered_ = false;
  63   ShowActive();
  64 }
  65
  66 void ButtonFromView::OnPaint(gfx::Canvas* canvas) {
  67   View::OnPaint(canvas);
  68   if (HasFocus()) {
  69     gfx::Rect rect(GetLocalBounds());
  70     rect.Inset(tab_frame_inset_);
  71     canvas->DrawSolidFocusRect(rect, kFocusBorderColor);
  72   }
  73 }
  74
  75 void ButtonFromView::OnFocus() {
  76   View::OnFocus();
  77   // Adding focus frame.
  78   SchedulePaint();
  79 }
  80
  81 void ButtonFromView::OnBlur() {
  82   View::OnBlur();
  83   // Removing focus frame.
  84   SchedulePaint();
  85 }
  86
  87 void ButtonFromView::GetAccessibleState(ui::AXViewState* state) {
  88   state->role = ui::AX_ROLE_BUTTON;
  89   std::vector<base::string16> labels;
  90   for (int i = 0; i < child_count(); ++i)
  91     GetAccessibleLabelFromDescendantViews(child_at(i), labels);
  92   state->name = JoinString(labels, base::ASCIIToUTF16(" "));
  93 }
  94
  95 void ButtonFromView::ShowActive() {
  96   bool border_visible =
  97       (button_hovered_ && highlight_on_hover_) || show_border_;
  98   SkColor border_color = border_visible ? kBorderColor : SK_ColorTRANSPARENT;
  99   SetBorder(views::Border::CreateSolidBorder(1, border_color));
 100   if (highlight_on_hover_) {
 101     SkColor background_color =
 102         button_hovered_ ? kHoverBackgroundColor : kBackgroundColor;
 103     content_->set_background(
 104         views::Background::CreateSolidBackground(background_color));
 105     set_background(views::Background::CreateSolidBackground(background_color));
 106   }
 107   SchedulePaint();
 108 }
 109
 110 }  // namespace tray
 111 }  // namespace ash