examples/super-blur-view/super-blur-view-example.cpp

   1 /*
   2  * Copyright (c) 2020 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 #include <dali-toolkit/dali-toolkit.h>
  19 #include <dali-toolkit/devel-api/controls/super-blur-view/super-blur-view.h>
  20 #include <dali/dali.h>
  21
  22 using namespace Dali;
  23 using Dali::Toolkit::Button;
  24 using Dali::Toolkit::PushButton;
  25 using Dali::Toolkit::SuperBlurView;
  26
  27 namespace
  28 {
  29 const char* const BACKGROUND_IMAGE(DEMO_IMAGE_DIR "background-4.jpg");
  30
  31 const unsigned int DEFAULT_BLUR_LEVEL(5u); ///< The default blur level when creating SuperBlurView from the type registry
  32
  33 } // namespace
  34
  35 /**
  36  * This example shows a background image which is "super blurred" while the push-button control is pressed.
  37  */
  38 class SuperBlurViewExample : public ConnectionTracker
  39 {
  40 public:
  41   SuperBlurViewExample(Application& application)
  42   : mApplication(application)
  43   {
  44     mApplication.InitSignal().Connect(this, &SuperBlurViewExample::Create);
  45   }
  46
  47   ~SuperBlurViewExample() = default;
  48
  49 private:
  50   void Create(Application& application)
  51   {
  52     Window window = application.GetWindow();
  53     window.KeyEventSignal().Connect(this, &SuperBlurViewExample::OnKeyEvent);
  54
  55     mSuperBlurView = SuperBlurView::New(DEFAULT_BLUR_LEVEL);
  56     mSuperBlurView.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
  57     mSuperBlurView.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
  58     mSuperBlurView.SetProperty(Actor::Property::SIZE, Vector2(800, 1280));
  59     mSuperBlurView.SetProperty(SuperBlurView::Property::IMAGE_URL, BACKGROUND_IMAGE);
  60     window.Add(mSuperBlurView);
  61
  62     mBlurAnimation = Animation::New(1.0f);
  63     mBlurAnimation.AnimateTo(Property(mSuperBlurView, mSuperBlurView.GetBlurStrengthPropertyIndex()), 1.0f);
  64
  65     mClearAnimation = Animation::New(1.0f);
  66     mClearAnimation.AnimateTo(Property(mSuperBlurView, mSuperBlurView.GetBlurStrengthPropertyIndex()), 0.0f);
  67
  68     mPushButton = PushButton::New();
  69     mPushButton.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_CENTER);
  70     mPushButton.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_CENTER);
  71     mPushButton.SetProperty(Button::Property::LABEL, "Blur");
  72     mPushButton.PressedSignal().Connect(this, &SuperBlurViewExample::OnButtonPressed);
  73     mPushButton.ReleasedSignal().Connect(this, &SuperBlurViewExample::OnButtonReleased);
  74     window.Add(mPushButton);
  75   }
  76
  77   bool OnButtonPressed(Button button)
  78   {
  79     mBlurAnimation.Play();
  80     return true;
  81   }
  82
  83   bool OnButtonReleased(Button button)
  84   {
  85     mClearAnimation.Play();
  86     return true;
  87   }
  88
  89   void OnKeyEvent(const KeyEvent& event)
  90   {
  91     if(event.GetState() == KeyEvent::DOWN)
  92     {
  93       if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
  94       {
  95         mApplication.Quit();
  96       }
  97     }
  98   }
  99
 100 private:
 101   Application& mApplication;
 102
 103   SuperBlurView mSuperBlurView;
 104
 105   PushButton mPushButton;
 106
 107   Animation mBlurAnimation;
 108   Animation mClearAnimation;
 109 };
 110
 111 int DALI_EXPORT_API main(int argc, char** argv)
 112 {
 113   Application application = Application::New(&argc, &argv);
 114
 115   SuperBlurViewExample test(application);
 116
 117   application.MainLoop();
 118
 119   return 0;
 120 }