examples/color-visual/color-visual-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/control-devel.h>
  20 #include <dali-toolkit/devel-api/visuals/color-visual-properties-devel.h>
  21 #include <dali-toolkit/devel-api/visuals/visual-properties-devel.h>
  22
  23 using namespace Dali;
  24 using namespace Dali::Toolkit;
  25
  26 namespace
  27 {
  28 const char* IMAGE_FILE(DEMO_IMAGE_DIR "gallery-medium-1.jpg");
  29
  30 const float BLUR_RADIUS_VALUE(15.0f);
  31 const Vector2 BLUR_OFFSET_VALUE(0.05f, 0.05f);
  32 const Vector2 BLUR_SIZE_VALUE(1.1f, 1.1f);
  33 const Vector2 NO_BLUR_SIZE_VALUE(1.05f, 1.05f);
  34 const float ANIMATION_DURATION(2.0f);
  35
  36 const Property::Value SHADOW{
  37   {Visual::Property::TYPE, Visual::COLOR},
  38   {Visual::Property::MIX_COLOR, Vector4(0.0f, 0.0f, 0.0f, 0.5f)},
  39   {Visual::Property::TRANSFORM, Property::Map{{Visual::Transform::Property::SIZE, NO_BLUR_SIZE_VALUE},
  40                                               {Visual::Transform::Property::ORIGIN, Align::CENTER},
  41                                               {Visual::Transform::Property::ANCHOR_POINT, Align::CENTER}}}};
  42
  43 } // namespace
  44
  45 // This example shows the blur radius property of the color visual and animates it.
  46 //
  47 class ColorVisualExample : public ConnectionTracker
  48 {
  49 public:
  50   ColorVisualExample(Application& application)
  51   : mApplication(application),
  52     mBlurEnabled(false)
  53   {
  54     // Connect to the Application's Init signal
  55     mApplication.InitSignal().Connect(this, &ColorVisualExample::Create);
  56   }
  57
  58   ~ColorVisualExample()
  59   {
  60     // Nothing to do here;
  61   }
  62
  63   // The Init signal is received once (only) during the Application lifetime
  64   void Create(Application& application)
  65   {
  66     // Get a handle to the window
  67     Window window = application.GetWindow();
  68     window.SetBackgroundColor(Color::WHITE);
  69
  70     mImageView = ImageView::New(IMAGE_FILE);
  71     mImageView.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
  72     mImageView.SetProperty(Actor::Property::SIZE, Vector2(200.0f, 200.0f));
  73     mImageView.SetProperty(DevelControl::Property::SHADOW, SHADOW);
  74
  75     window.Add(mImageView);
  76
  77     // Respond to a click anywhere on the window
  78     window.GetRootLayer().TouchedSignal().Connect(this, &ColorVisualExample::OnTouch);
  79
  80     // Respond to key events
  81     window.KeyEventSignal().Connect(this, &ColorVisualExample::OnKeyEvent);
  82   }
  83
  84   bool OnTouch(Actor actor, const TouchEvent& touch)
  85   {
  86     if(touch.GetState(0) == PointState::UP)
  87     {
  88       Animation animation = Animation::New(ANIMATION_DURATION);
  89
  90       if(!mBlurEnabled)
  91       {
  92         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, Visual::Property::MIX_COLOR), Vector3(1.0f, 0.0f, 0.0f));
  93         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, Visual::Property::OPACITY), 0.5f);
  94         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, DevelVisual::Property::CORNER_RADIUS), 30.0f);
  95         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, ColorVisual::Property::MIX_COLOR), Vector3(0.0f, 0.0f, 1.0f));
  96         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, DevelColorVisual::Property::BLUR_RADIUS), BLUR_RADIUS_VALUE);
  97         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, Visual::Transform::Property::OFFSET), BLUR_OFFSET_VALUE);
  98         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, Visual::Transform::Property::SIZE), BLUR_SIZE_VALUE);
  99       }
 100       else
 101       {
 102         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, Visual::Property::MIX_COLOR), Vector3(1.0f, 1.0f, 1.0f));
 103         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, Visual::Property::OPACITY), 1.0f);
 104         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, DevelVisual::Property::CORNER_RADIUS), 0.0f);
 105         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, ColorVisual::Property::MIX_COLOR), Vector3(0.0f, 0.0f, 0.0f));
 106         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, DevelColorVisual::Property::BLUR_RADIUS), 0.0f);
 107         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, Visual::Transform::Property::OFFSET), Vector2::ZERO);
 108         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, Visual::Transform::Property::SIZE), NO_BLUR_SIZE_VALUE);
 109       }
 110       animation.Play();
 111
 112       mBlurEnabled = !mBlurEnabled;
 113     }
 114     return true;
 115   }
 116
 117   void OnKeyEvent(const KeyEvent& event)
 118   {
 119     if(event.GetState() == KeyEvent::DOWN)
 120     {
 121       if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
 122       {
 123         mApplication.Quit();
 124       }
 125     }
 126   }
 127
 128 private:
 129   Application& mApplication;
 130   ImageView    mImageView;
 131   bool         mBlurEnabled;
 132 };
 133
 134 int DALI_EXPORT_API main(int argc, char** argv)
 135 {
 136   Application        application = Application::New(&argc, &argv);
 137   ColorVisualExample test(application);
 138   application.MainLoop();
 139   return 0;
 140 }