examples/color-visual/color-visual-example.cpp

   1 /*
   2  * Copyright (c) 2021 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,
  40    Property::Map{{Visual::Transform::Property::SIZE, NO_BLUR_SIZE_VALUE},
  41                  {Visual::Transform::Property::ORIGIN, Align::CENTER},
  42                  {Visual::Transform::Property::ANCHOR_POINT, Align::CENTER}}}};
  43
  44 } // namespace
  45
  46 // This example shows the blur radius property of the color visual and animates it.
  47 //
  48 class ColorVisualExample : public ConnectionTracker
  49 {
  50 public:
  51   ColorVisualExample(Application& application)
  52   : mApplication(application),
  53     mBlurEnabled(false)
  54   {
  55     // Connect to the Application's Init signal
  56     mApplication.InitSignal().Connect(this, &ColorVisualExample::Create);
  57   }
  58
  59   ~ColorVisualExample()
  60   {
  61     // Nothing to do here;
  62   }
  63
  64   // The Init signal is received once (only) during the Application lifetime
  65   void Create(Application& application)
  66   {
  67     // Get a handle to the window
  68     Window window = application.GetWindow();
  69     window.SetBackgroundColor(Color::WHITE);
  70
  71     mImageView = ImageView::New(IMAGE_FILE);
  72     mImageView.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
  73     mImageView.SetProperty(Actor::Property::SIZE, Vector2(200.0f, 200.0f));
  74     mImageView.SetProperty(DevelControl::Property::SHADOW, SHADOW);
  75
  76     window.Add(mImageView);
  77
  78     // Respond to a click anywhere on the window
  79     window.GetRootLayer().TouchedSignal().Connect(this, &ColorVisualExample::OnTouch);
  80
  81     // Respond to key events
  82     window.KeyEventSignal().Connect(this, &ColorVisualExample::OnKeyEvent);
  83   }
  84
  85   bool OnTouch(Actor actor, const TouchEvent& touch)
  86   {
  87     if(touch.GetState(0) == PointState::UP)
  88     {
  89       Animation animation = Animation::New(ANIMATION_DURATION);
  90
  91       if(!mBlurEnabled)
  92       {
  93         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, Visual::Property::MIX_COLOR), Vector3(1.0f, 0.0f, 0.0f));
  94         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, Visual::Property::OPACITY), 0.5f);
  95         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, DevelVisual::Property::CORNER_RADIUS), 30.0f);
  96         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, ColorVisual::Property::MIX_COLOR), Vector3(0.0f, 0.0f, 1.0f));
  97         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, DevelColorVisual::Property::BLUR_RADIUS), BLUR_RADIUS_VALUE);
  98         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, Visual::Transform::Property::OFFSET), BLUR_OFFSET_VALUE);
  99         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, Visual::Transform::Property::SIZE), BLUR_SIZE_VALUE);
 100       }
 101       else
 102       {
 103         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, Visual::Property::MIX_COLOR), Vector3(1.0f, 1.0f, 1.0f));
 104         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, Visual::Property::OPACITY), 1.0f);
 105         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, ImageView::Property::IMAGE, DevelVisual::Property::CORNER_RADIUS), 0.0f);
 106         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, ColorVisual::Property::MIX_COLOR), Vector3(0.0f, 0.0f, 0.0f));
 107         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, DevelColorVisual::Property::BLUR_RADIUS), 0.0f);
 108         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, Visual::Transform::Property::OFFSET), Vector2::ZERO);
 109         animation.AnimateTo(DevelControl::GetVisualProperty(mImageView, DevelControl::Property::SHADOW, Visual::Transform::Property::SIZE), NO_BLUR_SIZE_VALUE);
 110       }
 111       animation.Play();
 112
 113       mBlurEnabled = !mBlurEnabled;
 114     }
 115     return true;
 116   }
 117
 118   void OnKeyEvent(const KeyEvent& event)
 119   {
 120     if(event.GetState() == KeyEvent::DOWN)
 121     {
 122       if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
 123       {
 124         mApplication.Quit();
 125       }
 126     }
 127   }
 128
 129 private:
 130   Application& mApplication;
 131   ImageView    mImageView;
 132   bool         mBlurEnabled;
 133 };
 134
 135 int DALI_EXPORT_API main(int argc, char** argv)
 136 {
 137   Application        application = Application::New(&argc, &argv);
 138   ColorVisualExample test(application);
 139   application.MainLoop();
 140   return 0;
 141 }