Ash:Shelf - Cleanup of Alternate Shelf (part 1)

ash/shelf/alternate_app_list_button.cc

-// Copyright 2013 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 "ash/shelf/alternate_app_list_button.h"
-
-#include "ash/ash_constants.h"
-#include "ash/ash_switches.h"
-#include "ash/launcher/launcher_types.h"
-#include "ash/shelf/shelf_button.h"
-#include "ash/shelf/shelf_button_host.h"
-#include "ash/shelf/shelf_layout_manager.h"
-#include "ash/shelf/shelf_widget.h"
-#include "ash/shell.h"
-#include "grit/ash_resources.h"
-#include "grit/ash_strings.h"
-#include "ui/base/accessibility/accessible_view_state.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/compositor/layer.h"
-#include "ui/compositor/layer_animation_element.h"
-#include "ui/compositor/layer_animation_sequence.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/image/image_skia_operations.h"
-#include "ui/views/controls/button/image_button.h"
-#include "ui/views/painter.h"
-
-namespace ash {
-namespace internal {
-
-// static
-const int AlternateAppListButton::kImageBoundsSize = 7;
-
-
-AlternateAppListButton::AlternateAppListButton(views::ButtonListener* listener,
-                                               ShelfButtonHost* host,
-                                               ShelfWidget* shelf_widget)
-    : views::ImageButton(listener),
-      host_(host),
-      shelf_widget_(shelf_widget) {
-  SetAccessibleName(l10n_util::GetStringUTF16(IDS_AURA_APP_LIST_TITLE));
-  SetSize(gfx::Size(ShelfLayoutManager::kShelfSize,
-                    ShelfLayoutManager::kShelfSize));
-  SetFocusPainter(views::Painter::CreateSolidFocusPainter(
-                      kFocusBorderColor, gfx::Insets(1, 1, 1, 1)));
-}
-
-AlternateAppListButton::~AlternateAppListButton() {
-}
-
-bool AlternateAppListButton::OnMousePressed(const ui::MouseEvent& event) {
-  ImageButton::OnMousePressed(event);
-  host_->PointerPressedOnButton(this, ShelfButtonHost::MOUSE, event);
-  return true;
-}
-
-void AlternateAppListButton::OnMouseReleased(const ui::MouseEvent& event) {
-  ImageButton::OnMouseReleased(event);
-  host_->PointerReleasedOnButton(this, ShelfButtonHost::MOUSE, false);
-}
-
-void AlternateAppListButton::OnMouseCaptureLost() {
-  host_->PointerReleasedOnButton(this, ShelfButtonHost::MOUSE, true);
-  ImageButton::OnMouseCaptureLost();
-}
-
-bool AlternateAppListButton::OnMouseDragged(const ui::MouseEvent& event) {
-  ImageButton::OnMouseDragged(event);
-  host_->PointerDraggedOnButton(this, ShelfButtonHost::MOUSE, event);
-  return true;
-}
-
-void AlternateAppListButton::OnMouseMoved(const ui::MouseEvent& event) {
-  ImageButton::OnMouseMoved(event);
-  host_->MouseMovedOverButton(this);
-}
-
-void AlternateAppListButton::OnMouseEntered(const ui::MouseEvent& event) {
-  ImageButton::OnMouseEntered(event);
-  host_->MouseEnteredButton(this);
-}
-
-void AlternateAppListButton::OnMouseExited(const ui::MouseEvent& event) {
-  ImageButton::OnMouseExited(event);
-  host_->MouseExitedButton(this);
-}
-
-void AlternateAppListButton::OnGestureEvent(ui::GestureEvent* event) {
-  switch (event->type()) {
-   case ui::ET_GESTURE_SCROLL_BEGIN:
-     host_->PointerPressedOnButton(this, ShelfButtonHost::TOUCH, *event);
-     event->SetHandled();
-     return;
-   case ui::ET_GESTURE_SCROLL_UPDATE:
-     host_->PointerDraggedOnButton(this, ShelfButtonHost::TOUCH, *event);
-     event->SetHandled();
-     return;
-   case ui::ET_GESTURE_SCROLL_END:
-   case ui::ET_SCROLL_FLING_START:
-     host_->PointerReleasedOnButton(this, ShelfButtonHost::TOUCH, false);
-     event->SetHandled();
-     return;
-   default:
-     ImageButton::OnGestureEvent(event);
-     return;
-  }
-}
-
-void AlternateAppListButton::OnPaint(gfx::Canvas* canvas) {
-  // Call the base class first to paint any background/borders.
-  View::OnPaint(canvas);
-
-  int background_image_id = 0;
-  if (Shell::GetInstance()->GetAppListTargetVisibility()) {
-    background_image_id = IDR_AURA_NOTIFICATION_BACKGROUND_PRESSED;
-  } else {
-    if (shelf_widget_->GetDimsShelf())
-      background_image_id = IDR_AURA_NOTIFICATION_BACKGROUND_ON_BLACK;
-    else
-      background_image_id = IDR_AURA_NOTIFICATION_BACKGROUND_NORMAL;
-  }
-  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-  const gfx::ImageSkia* background_image =
-      rb.GetImageNamed(background_image_id).ToImageSkia();
-  const gfx::ImageSkia* forground_image =
-      rb.GetImageNamed(IDR_AURA_LAUNCHER_ICON_APPLIST_ALTERNATE).ToImageSkia();
-
-  gfx::Rect contents_bounds = GetContentsBounds();
-  gfx::Rect background_bounds, forground_bounds;
-
-  ShelfAlignment alignment = shelf_widget_->GetAlignment();
-  background_bounds.set_size(background_image->size());
-  if (alignment == SHELF_ALIGNMENT_LEFT) {
-    background_bounds.set_x(contents_bounds.width() -
-        ShelfLayoutManager::kShelfItemInset - background_image->width());
-    background_bounds.set_y(contents_bounds.y() +
-        (contents_bounds.height() - background_image->height()) / 2);
-  } else if(alignment == SHELF_ALIGNMENT_RIGHT) {
-    background_bounds.set_x(ShelfLayoutManager::kShelfItemInset);
-    background_bounds.set_y(contents_bounds.y() +
-        (contents_bounds.height() - background_image->height()) / 2);
-  } else {
-    background_bounds.set_y(ShelfLayoutManager::kShelfItemInset);
-    background_bounds.set_x(contents_bounds.x() +
-        (contents_bounds.width() - background_image->width()) / 2);
-  }
-
-  forground_bounds.set_size(forground_image->size());
-  forground_bounds.set_x(background_bounds.x() +
-      std::max(0,
-          (background_bounds.width() - forground_bounds.width()) / 2));
-  forground_bounds.set_y(background_bounds.y() +
-      std::max(0,
-          (background_bounds.height() - forground_bounds.height()) / 2));
-
-  canvas->DrawImageInt(*background_image,
-                       background_bounds.x(),
-                       background_bounds.y());
-  canvas->DrawImageInt(*forground_image,
-                       forground_bounds.x(),
-                       forground_bounds.y());
-
-  views::Painter::PaintFocusPainter(this, canvas, focus_painter());
-}
-
-void AlternateAppListButton::GetAccessibleState(
-    ui::AccessibleViewState* state) {
-  state->role = ui::AccessibilityTypes::ROLE_PUSHBUTTON;
-  state->name = host_->GetAccessibleName(this);
-}
-
-}  // namespace internal
-}  // namespace ash