color-visual-example.cpp
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/*
* Copyright (c) 2020 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <dali-toolkit/dali-toolkit.h>
#include <dali-toolkit/devel-api/controls/control-devel.h>
#include <dali-toolkit/devel-api/visual-factory/transition-data.h>
#include <dali-toolkit/devel-api/visuals/color-visual-properties-devel.h>
#include <dali-toolkit/devel-api/visuals/visual-properties-devel.h>
using namespace Dali;
using namespace Dali::Toolkit;
namespace
{
const char* IMAGE_FILE(DEMO_IMAGE_DIR "gallery-medium-1.jpg");
const float BLUR_RADIUS_VALUE(10.0f);
const float NO_BLUR_VALUE(0.0f);
const float ANIMATION_DURATION(2.0f);
const Property::Value SHADOW{
{Visual::Property::TYPE, Visual::COLOR},
{Visual::Property::MIX_COLOR, Vector4(0.0f, 0.0f, 0.0f, 0.5f)},
{Visual::Property::TRANSFORM, Property::Map{{Visual::Transform::Property::OFFSET, Vector2(0.05f, 0.05f)}, {Visual::Transform::Property::SIZE, Vector2(1.05f, 1.05f)}, {Visual::Transform::Property::ORIGIN, Align::CENTER}, {Visual::Transform::Property::ANCHOR_POINT, Align::CENTER}}},
{DevelColorVisual::Property::BLUR_RADIUS, BLUR_RADIUS_VALUE}};
} // namespace
// This example shows the blur radius property of the color visual and animates it.
//
class ColorVisualExample : public ConnectionTracker
{
public:
ColorVisualExample(Application& application)
: mApplication(application),
mShadowVisible(true)
{
// Connect to the Application's Init signal
mApplication.InitSignal().Connect(this, &ColorVisualExample::Create);
}
~ColorVisualExample()
{
// Nothing to do here;
}
// The Init signal is received once (only) during the Application lifetime
void Create(Application& application)
{
// Get a handle to the window
Window window = application.GetWindow();
window.SetBackgroundColor(Color::WHITE);
mImageView = ImageView::New(IMAGE_FILE);
mImageView.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
mImageView.SetProperty(Actor::Property::SIZE, Vector2(200.0f, 200.0f));
mImageView.SetProperty(DevelControl::Property::SHADOW, SHADOW);
window.Add(mImageView);
// Respond to a click anywhere on the window
window.GetRootLayer().TouchedSignal().Connect(this, &ColorVisualExample::OnTouch);
// Respond to key events
window.KeyEventSignal().Connect(this, &ColorVisualExample::OnKeyEvent);
}
bool OnTouch(Actor actor, const TouchEvent& touch)
{
if(touch.GetState(0) == PointState::UP)
{
float initialValue, targetValue;
if(!mShadowVisible)
{
initialValue = NO_BLUR_VALUE;
targetValue = BLUR_RADIUS_VALUE;
}
else
{
initialValue = BLUR_RADIUS_VALUE;
targetValue = NO_BLUR_VALUE;
}
mShadowVisible = !mShadowVisible;
TransitionData transitionData = TransitionData::New(Property::Map().Add("target", "shadow").Add("property", "blurRadius").Add("initialValue", initialValue).Add("targetValue", targetValue).Add("animator", Property::Map().Add("duration", ANIMATION_DURATION)));
Animation animation = DevelControl::CreateTransition(Toolkit::Internal::GetImplementation(mImageView), transitionData);
animation.Play();
}
return true;
}
void OnKeyEvent(const KeyEvent& event)
{
if(event.GetState() == KeyEvent::DOWN)
{
if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
{
mApplication.Quit();
}
}
}
private:
Application& mApplication;
ImageView mImageView;
bool mShadowVisible;
};
int DALI_EXPORT_API main(int argc, char** argv)
{
Application application = Application::New(&argc, &argv);
ColorVisualExample test(application);
application.MainLoop();
return 0;
}