Draggable peeking/fullscreen launcher with transparent background.

ui/app_list/views/search_box_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/app_list/views/search_box_view.h"
 
 #include <algorithm>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "build/build_config.h"
 #include "ui/app_list/app_list_constants.h"
+#include "ui/app_list/app_list_features.h"
 #include "ui/app_list/app_list_model.h"
 #include "ui/app_list/app_list_switches.h"
 #include "ui/app_list/app_list_view_delegate.h"
 #include "ui/app_list/resources/grit/app_list_resources.h"
 #include "ui/app_list/search_box_model.h"
 #include "ui/app_list/speech_ui_model.h"
+#include "ui/app_list/views/app_list_view.h"
 #include "ui/app_list/views/contents_view.h"
 #include "ui/app_list/views/search_box_view_delegate.h"
 #include "ui/base/ime/text_input_flags.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/event.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/shadow_value.h"
 #include "ui/strings/grit/ui_strings.h"
 #include "ui/views/background.h"
 #include "ui/views/border.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/views/controls/textfield/textfield.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/layout/fill_layout.h"
 #include "ui/views/shadow_border.h"
+#include "ui/views/widget/widget.h"
 
 namespace app_list {
 
 namespace {
 
 const int kPadding = 16;
 const int kInnerPadding = 24;
 const int kPreferredWidth = 360;
+const int kPreferredWidthFullscreen = 544;
 const int kPreferredHeight = 48;
 
 const SkColor kHintTextColor = SkColorSetRGB(0xA0, 0xA0, 0xA0);
 
 const int kBackgroundBorderCornerRadius = 2;
+const int kBackgroundBorderCornerRadiusFullscreen = 20;
+
+bool IsFullscreenAppListEnabled() {
+  // Cache this value to avoid repeated lookup.
+  static bool cached_value = features::IsFullscreenAppListEnabled();
+  return cached_value;
+}
 
 // A background that paints a solid white rounded rect with a thin grey border.
 class SearchBoxBackground : public views::Background {
  public:
-  SearchBoxBackground() {}
+  SearchBoxBackground()
+      : background_border_corner_radius_(
+            IsFullscreenAppListEnabled()
+                ? kBackgroundBorderCornerRadiusFullscreen
+                : kBackgroundBorderCornerRadius) {}
   ~SearchBoxBackground() override {}
 
  private:
   // views::Background overrides:
   void Paint(gfx::Canvas* canvas, views::View* view) const override {
     gfx::Rect bounds = view->GetContentsBounds();
 
     cc::PaintFlags flags;
     flags.setAntiAlias(true);
     flags.setColor(kSearchBoxBackground);
-    canvas->DrawRoundRect(bounds, kBackgroundBorderCornerRadius, flags);
+    canvas->DrawRoundRect(bounds, background_border_corner_radius_, flags);
   }
 
+  const int background_border_corner_radius_;
+
   DISALLOW_COPY_AND_ASSIGN(SearchBoxBackground);
 };
 
 }  // namespace
 
 // To paint grey background on mic and back buttons
 class SearchBoxImageButton : public views::ImageButton {
  public:
   explicit SearchBoxImageButton(views::ButtonListener* listener)
       : ImageButton(listener), selected_(false) {}
@@ skipping 29 matching lines @@
   }
 
   const char* GetClassName() const override { return "SearchBoxImageButton"; }
 
   bool selected_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchBoxImageButton);
 };
 
 SearchBoxView::SearchBoxView(SearchBoxViewDelegate* delegate,
-                             AppListViewDelegate* view_delegate)
+                             AppListViewDelegate* view_delegate,
+                             AppListView* app_list_view)
     : delegate_(delegate),
       view_delegate_(view_delegate),
       model_(NULL),
       content_container_(new views::View),
       back_button_(NULL),
       speech_button_(NULL),
       search_box_(new views::Textfield),
       contents_view_(NULL),
+      app_list_view_(app_list_view),
       focused_view_(FOCUS_SEARCH_BOX) {
   SetLayoutManager(new views::FillLayout);
-  SetPreferredSize(gfx::Size(kPreferredWidth, kPreferredHeight));
+  SetPreferredSize(gfx::Size(IsFullscreenAppListEnabled()
+                                 ? kPreferredWidthFullscreen
+                                 : kPreferredWidth,
+                             kPreferredHeight));
   AddChildView(content_container_);
 
   SetShadow(GetShadowForZHeight(2));
   back_button_ = new SearchBoxImageButton(this);
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   back_button_->SetImage(views::ImageButton::STATE_NORMAL,
                          rb.GetImageSkiaNamed(IDR_APP_LIST_FOLDER_BACK_NORMAL));
   back_button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
                                   views::ImageButton::ALIGN_MIDDLE);
   SetBackButtonLabel(false);
@@ skipping 177 matching lines @@
 void SearchBoxView::NotifyQueryChanged() {
   DCHECK(delegate_);
   delegate_->QueryChanged(this);
 }
 
 void SearchBoxView::ContentsChanged(views::Textfield* sender,
                                     const base::string16& new_contents) {
   UpdateModel();
   view_delegate_->AutoLaunchCanceled();
   NotifyQueryChanged();
+
+  if (IsFullscreenAppListEnabled() && !app_list_view_->is_fullscreen()) {
+    // If the app list is in the peeking state, switch it to fullscreen.
+    app_list_view_->SetState(AppListView::FULLSCREEN);
+  }
 }
 
 bool SearchBoxView::HandleKeyEvent(views::Textfield* sender,
                                    const ui::KeyEvent& key_event) {
   if (key_event.type() == ui::ET_KEY_PRESSED) {
     if (key_event.key_code() == ui::VKEY_TAB &&
         focused_view_ != FOCUS_CONTENTS_VIEW &&
         MoveTabFocus(key_event.IsShiftDown()))
       return true;
 
@@ skipping 95 matching lines @@
   NotifyQueryChanged();
 }
 
 void SearchBoxView::OnSpeechRecognitionStateChanged(
     SpeechRecognitionState new_state) {
   SpeechRecognitionButtonPropChanged();
   SchedulePaint();
 }
 
 }  // namespace app_list