app_list: Touch scroll and animation improvement.

ui/app_list/search_result_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/search_result_view.h"
 
 #include "ui/app_list/search_result.h"
 #include "ui/app_list/search_result_list_view.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font.h"
@@ skipping 20 matching lines @@
 
 // Extra margin at the right of the rightmost action icon.
 const int kActionButtonRightMargin = 8;
 
 const SkColor kBorderColor = SkColorSetARGB(0x0F, 0, 0, 0);
 
 const SkColor kDefaultTextColor = SkColorSetRGB(0x33, 0x33, 0x33);
 const SkColor kDimmedTextColor = SkColorSetRGB(0x96, 0x96, 0x96);
 const SkColor kURLTextColor = SkColorSetRGB(0x00, 0x99, 0x33);
 
+const SkColor kBackgroundColor = SkColorSetRGB(0xF5, 0xF5, 0xF5);
 const SkColor kSelectedBorderColor = kBorderColor;
 const SkColor kSelectedBackgroundColor = SkColorSetARGB(0x0F, 0x4D, 0x90, 0xFE);
 const SkColor kHoverAndPushedColor = SkColorSetARGB(0x05, 0, 0, 0);
 
 // A non-interactive image view to display result icon.
 class IconView : public views::ImageView {
  public:
   IconView() : ImageView() {}
   virtual ~IconView() {}
 
@@ skipping 131 matching lines @@
 }
 
 void SearchResultView::OnPaint(gfx::Canvas* canvas) {
   gfx::Rect rect(GetContentsBounds());
   if (rect.IsEmpty())
     return;
 
   gfx::Rect content_rect(rect);
   content_rect.set_height(rect.height() - kBorderSize);
 
+  canvas->FillRect(content_rect, kBackgroundColor);
+
   bool selected = list_view_->IsResultViewSelected(this);
   if (selected) {
     canvas->FillRect(content_rect, kSelectedBackgroundColor);
   } else if (state() == BS_HOT || state() == BS_PUSHED) {
     canvas->FillRect(content_rect, kHoverAndPushedColor);
   }
 
   gfx::Rect border_bottom = rect.Subtract(content_rect);
   canvas->FillRect(border_bottom,
                    selected ? kSelectedBorderColor : kBorderColor);
@@ skipping 90 matching lines @@
       views::ImageButton* button = action_buttons_[i];
       button->SetImage(views::CustomButton::BS_NORMAL, &icon.base_image);
       button->SetImage(views::CustomButton::BS_HOT, &icon.hover_image);
       button->SetImage(views::CustomButton::BS_PUSHED, &icon.pressed_image);
       button->SetTooltipText(icon.tooltip_text);
     }
   }
 }
 
 }  // namespace app_list