bubble-animator.h
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#ifndef DALI_DEMO_BUBBLE_ANIMATOR_H
#define DALI_DEMO_BUBBLE_ANIMATOR_H
/*
* Copyright (c) 2021 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.
*
*/
// EXTERNAL INCLUDES
#include <dali/public-api/actors/actor.h>
#include <dali/public-api/adaptor-framework/timer.h>
#include <dali/public-api/animation/animation.h>
#include <dali/public-api/object/weak-handle.h>
#include <dali/public-api/signals/connection-tracker.h>
#include <vector>
/**
* Creates and animates random sized bubbles
*/
class BubbleAnimator : public Dali::ConnectionTracker
{
public:
/**
* @brief Initilizes the bubble background
*
* @param parent The actor to add all the bubbles to
* @param scrollView If provided, does a parallax effect when scrolling using this scroll-view (optional)
*/
void Initialize(Dali::Actor parent, Dali::Actor scrollView = Dali::Actor());
/**
* @brief Plays the bubble animation
*/
void PlayAnimation();
private:
/**
* @brief Used by the timer to pause the animation
*
* @return Returns false to cancel the timer
*/
bool PauseAnimation();
/**
* @brief Initializes the background actors
*
* @param actor Actor which contains all the children
*/
void InitializeBackgroundActors(Dali::Actor actor);
/**
* Create background actors for the given layer
*
* @param[in] layer The layer to add the actors to
* @param[in] count The number of actors to generate
*/
void AddBackgroundActors(Dali::Actor layer, int count);
private:
using AnimationList = std::vector<Dali::Animation>;
Dali::WeakHandle<Dali::Actor> mScrollView; ///< Weak handle to the scroll view used to apply a parallax effect when scrolling.
AnimationList mBackgroundAnimations; ///< List of background bubble animations.
Dali::Timer mAnimationTimer; ///< Timer used to turn off animation after a specific time period.
bool mBackgroundAnimsPlaying{false}; ///< Are background animations playing.
};
#endif // DALI_DEMO_BUBBLE_ANIMATOR_H