ui/views/examples/notification_example.cc

// Copyright 2021 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/views/examples/notification_example.h"

#include <algorithm>
#include <memory>
#include <string>
#include <vector>

#include "base/memory/scoped_refptr.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/gfx/image/image.h"
#include "ui/message_center/message_center.h"
#include "ui/message_center/public/cpp/notification.h"
#include "ui/message_center/public/cpp/notification_delegate.h"
#include "ui/message_center/public/cpp/notification_types.h"
#include "ui/message_center/public/cpp/notifier_id.h"
#include "ui/message_center/views/notification_view.h"
#include "ui/views/examples/grit/views_examples_resources.h"
#include "ui/views/layout/flex_layout.h"
#include "ui/views/layout/flex_layout_types.h"
#include "url/gurl.h"

namespace {

gfx::Image CreateTestImage(const gfx::Size& size) {
  SkBitmap bitmap;
  bitmap.allocN32Pixels(size.width(), size.height());
  bitmap.eraseColor(SK_ColorTRANSPARENT);
  SkCanvas canvas(bitmap);
  SkScalar radius = std::min(size.width(), size.height()) * SK_ScalarHalf;
  SkPaint paint;
  paint.setColor(SK_ColorGREEN);
  paint.setStyle(SkPaint::kFill_Style);
  paint.setAntiAlias(true);
  canvas.drawCircle(radius, radius, radius, paint);
  return gfx::Image::CreateFrom1xBitmap(bitmap);
}

}  // namespace

namespace views {
namespace examples {

NotificationExample::NotificationExample()
    : ExampleBase(
          l10n_util::GetStringUTF8(IDS_NOTIFICATION_SELECT_LABEL).c_str()) {
  message_center::MessageCenter::Initialize();
}

NotificationExample::~NotificationExample() {
  message_center::MessageCenter::Shutdown();
}

void NotificationExample::CreateExampleView(View* container) {
  container->SetLayoutManager(std::make_unique<FlexLayout>())
      ->SetCrossAxisAlignment(LayoutAlignment::kStart);

  message_center::RichNotificationData data;
  data.settings_button_handler = message_center::SettingsButtonHandler::INLINE;
  message_center::Notification notification(
      message_center::NOTIFICATION_TYPE_BASE_FORMAT, "id", u"Title", u"Message",
      CreateTestImage(gfx::Size(80, 80)), std::u16string(), GURL(),
      message_center::NotifierId(message_center::NotifierType::APPLICATION,
                                 "views_examples"),
      data, base::MakeRefCounted<message_center::NotificationDelegate>());
  notification.set_small_image(CreateTestImage(gfx::Size(16, 16)));
  notification.set_image(CreateTestImage(gfx::Size(320, 240)));
  std::vector<message_center::ButtonInfo> buttons = {
      message_center::ButtonInfo(u"No-op"),
      message_center::ButtonInfo(u"Text input")};
  buttons[1].placeholder = u"Placeholder";
  notification.set_buttons(buttons);
  message_center::MessageCenter::Get()->AddNotification(
      std::make_unique<message_center::Notification>(notification));
  auto* const notification_view = container->AddChildView(
      std::make_unique<message_center::NotificationView>(notification));
  notification_view->SetProperty(
      views::kFlexBehaviorKey,
      FlexSpecification(MinimumFlexSizeRule::kPreferredSnapToMinimum,
                        MaximumFlexSizeRule::kPreferred));
}

}  // namespace examples
}  // namespace views