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