Home | History | Annotate | Download | only in views 
      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 "ui/app_list/views/contents_switcher_view.h"
      6 
      7 #include "ui/app_list/views/contents_view.h"
      8 #include "ui/base/resource/resource_bundle.h"
      9 #include "ui/views/controls/button/custom_button.h"
     10 #include "ui/views/controls/button/image_button.h"
     11 #include "ui/views/layout/box_layout.h"
     12 
     13 namespace app_list {
     14 
     15 namespace {
     16 
     17 const int kButtonSpacing = 4;
     18 const int kMinimumHeight = 39;
     19 
     20 }  // namespace
     21 
     22 ContentsSwitcherView::ContentsSwitcherView(ContentsView* contents_view)
     23     : contents_view_(contents_view) {
     24   views::BoxLayout* layout = new views::BoxLayout(
     25       views::BoxLayout::kHorizontal, 0, 0, kButtonSpacing);
     26   layout->set_main_axis_alignment(views::BoxLayout::MAIN_AXIS_ALIGNMENT_CENTER);
     27   layout->set_minimum_cross_axis_size(kMinimumHeight);
     28   SetLayoutManager(layout);
     29 }
     30 
     31 ContentsSwitcherView::~ContentsSwitcherView() {}
     32 
     33 void ContentsSwitcherView::AddSwitcherButton(int resource_id, int page_index) {
     34   views::ImageButton* button = new views::ImageButton(this);
     35   button->SetMinimumImageSize(gfx::Size(kMinimumHeight, kMinimumHeight));
     36   button->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
     37                             views::ImageButton::ALIGN_MIDDLE);
     38   button->SetImage(
     39       views::CustomButton::STATE_NORMAL,
     40       ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(resource_id));
     41   button->set_tag(page_index);
     42 
     43   AddChildView(button);
     44 }
     45 
     46 void ContentsSwitcherView::ButtonPressed(views::Button* sender,
     47                                          const ui::Event& event) {
     48   contents_view_->SetActivePage(sender->tag());
     49 }
     50 
     51 void ContentsSwitcherView::TotalPagesChanged() {
     52 }
     53 
     54 void ContentsSwitcherView::SelectedPageChanged(int old_selected,
     55                                                int new_selected) {
     56   // TODO(mgiuca): Visually indicate which page is now selected.
     57 }
     58 
     59 void ContentsSwitcherView::TransitionStarted() {
     60 }
     61 
     62 void ContentsSwitcherView::TransitionChanged() {
     63   // Change the indicator during a launcher page transition.
     64   const PaginationModel& pm = contents_view_->pagination_model();
     65   int old_selected = pm.selected_page();
     66   int new_selected = pm.transition().target_page;
     67   if (pm.IsRevertingCurrentTransition()) {
     68     // Swap the direction if the transition is reversed.
     69     old_selected = pm.transition().target_page;
     70     new_selected = pm.selected_page();
     71   }
     72 
     73   SelectedPageChanged(old_selected, new_selected);
     74 }
     75 
     76 }  // namespace app_list
     77