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Rémi Heredero
2023-11-26 20:13:49 +01:00
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190
ide-touchgfx-gen/Middlewares/ST/touchgfx/framework/include/mvp/MVPApplication.hpp Normal file
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/**
******************************************************************************
* This file is part of the TouchGFX 4.16.1 distribution.
*
* <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/**
* @file mvp/MVPApplication.hpp
*
* Declares the touchgfx::MVPApplication class.
*/
#ifndef MVPAPPLICATION_HPP
#define MVPAPPLICATION_HPP
#include <cassert>
#include <new>
#include <common/Meta.hpp>
#include <common/Partition.hpp>
#include <mvp/MVPHeap.hpp>
#include <mvp/View.hpp>
#include <touchgfx/Application.hpp>
#include <touchgfx/Callback.hpp>
#include <touchgfx/hal/HAL.hpp>
#include <touchgfx/transitions/Transition.hpp>
namespace touchgfx
{
class Presenter;
/**
* A specialization of the TouchGFX Application class that provides the necessary glue for
* transitioning between presenter/view pairs.
*
* It maintains a callback for transitioning and evaluates this at each tick.
*
* @see Application
*/
class MVPApplication : public Application
{
public:
/** Initializes a new instance of the MVPApplication class. */
MVPApplication()
: currentPresenter(0),
pendingScreenTransitionCallback(0)
{
instance = this;
}
/**
* Handles the pending screen transition.
*
* Delegates the work to evaluatePendingScreenTransition()
*/
virtual void handlePendingScreenTransition()
{
evaluatePendingScreenTransition();
}
protected:
Presenter* currentPresenter; ///< Pointer to the currently active presenter.
GenericCallback<>* pendingScreenTransitionCallback; ///< Callback for screen transitions. Will be set to something valid when a transition request is made.
/**
* Evaluates the pending Callback instances. If a callback is valid, it is executed and
* a Screen transition is executed.
*/
void evaluatePendingScreenTransition()
{
if (pendingScreenTransitionCallback && pendingScreenTransitionCallback->isValid())
{
pendingScreenTransitionCallback->execute();
pendingScreenTransitionCallback = 0;
}
}
};
/**
* Prepare screen transition. Private helper function for makeTransition. Do not use.
*
* @param [in] currentScreen If non-null, the current screen.
* @param [in] currentPresenter If non-null, the current presenter.
* @param [in] currentTrans If non-null, the current transaction.
*/
FORCE_INLINE_FUNCTION static void prepareTransition(Screen** currentScreen, Presenter** currentPresenter, Transition** currentTrans)
{
Application::getInstance()->clearAllTimerWidgets();
if (*currentTrans)
{
(*currentTrans)->tearDown();
}
if (*currentTrans)
{
(*currentTrans)->~Transition();
}
if (*currentScreen)
{
(*currentScreen)->tearDownScreen();
}
if (*currentPresenter)
{
(*currentPresenter)->deactivate();
}
if (*currentScreen)
{
(*currentScreen)->~Screen();
}
if (*currentPresenter)
{
(*currentPresenter)->~Presenter();
}
}
/**
* Finalize screen transition. Private helper function for makeTransition. Do not use.
*
* @param [in] newScreen If non-null, the new screen.
* @param [in] newPresenter If non-null, the new presenter.
* @param [in] newTransition If non-null, the new transition.
*/
FORCE_INLINE_FUNCTION static void finalizeTransition(Screen* newScreen, Presenter* newPresenter, Transition* newTransition)
{
newScreen->setupScreen();
newPresenter->activate();
newScreen->bindTransition(*newTransition);
newTransition->init();
newTransition->invalidate();
}
/**
* Function for effectuating a screen transition (i.e. makes the requested new presenter/view
* pair active). Once this function has returned, the new screen has been transitioned
* to. Due to the memory allocation strategy of using the same memory area for all
* screens, the old view/presenter will no longer exist when this function returns.
*
* Will properly clean up old screen (tearDownScreen, Presenter::deactivate) and call
* setupScreen/activate on new view/presenter pair. Will also make sure the view,
* presenter and model are correctly bound to each other.
*
* @tparam ScreenType Class type for the View.
* @tparam PresenterType Class type for the Presenter.
* @tparam TransType Class type for the Transition.
* @tparam ModelType Class type for the Model.
* @param [in] currentScreen Pointer to pointer to the current view.
* @param [in] currentPresenter Pointer to pointer to the current presenter.
* @param [in] heap Reference to the heap containing the memory storage in which
* to allocate.
* @param [in] currentTrans Pointer to pointer to the current transition.
* @param [in] model Pointer to model.
*
* @return Pointer to the new Presenter of the requested type. Incidentally it will be the same
* value as the old presenter due to memory reuse.
*/
template <class ScreenType, class PresenterType, class TransType, class ModelType>
PresenterType* makeTransition(Screen** currentScreen, Presenter** currentPresenter, MVPHeap& heap, Transition** currentTrans, ModelType* model)
{
assert(sizeof(ScreenType) <= heap.screenStorage.element_size() && "View allocation error: Check that all views are added to FrontendHeap::ViewTypes");
assert(sizeof(PresenterType) <= heap.presenterStorage.element_size() && "Presenter allocation error: Check that all presenters are added to FrontendHeap::PresenterTypes");
assert(sizeof(TransType) <= heap.transitionStorage.element_size() && "Transition allocation error: Check that all transitions are added to FrontendHeap::TransitionTypes");
prepareTransition(currentScreen, currentPresenter, currentTrans);
TransType* newTransition = new (&heap.transitionStorage.at<TransType>(0)) TransType;
ScreenType* newScreen = new (&heap.screenStorage.at<ScreenType>(0)) ScreenType;
PresenterType* newPresenter = new (&heap.presenterStorage.at<PresenterType>(0)) PresenterType(*newScreen);
*currentTrans = newTransition;
*currentPresenter = newPresenter;
*currentScreen = newScreen;
model->bind(newPresenter);
newPresenter->bind(model);
newScreen->bind(*newPresenter);
finalizeTransition((Screen*)newScreen, (Presenter*)newPresenter, (Transition*)newTransition);
return newPresenter;
}
} // namespace touchgfx
#endif // MVPAPPLICATION_HPP

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ide-touchgfx-gen/Middlewares/ST/touchgfx/framework/include/mvp/MVPHeap.hpp Normal file
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/**
******************************************************************************
* This file is part of the TouchGFX 4.16.1 distribution.
*
* <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/**
* @file mvp/MVPHeap.hpp
*
* Declares the touchgfx::MVPHeap class.
*/
#ifndef MVPHEAP_HPP
#define MVPHEAP_HPP
namespace touchgfx
{
class AbstractPartition;
class MVPApplication;
/**
* Generic heap class for MVP applications. Serves as a way of obtaining the memory storage
* areas for presenters, screens, transitions and the concrete application.
*
* Subclassed by an application-specific heap which provides the actual storage areas.
* This generic interface is used only in makeTransition.
*/
class MVPHeap
{
public:
/**
* Initializes a new instance of the MVPHeap class.
*
* @param [in] pres A memory partition containing enough memory to hold the largest
* presenter.
* @param [in] scr A memory partition containing enough memory to hold the largest view.
* @param [in] tra A memory partition containing enough memory to hold the largest
* transition.
* @param [in] app A reference to the MVPApplication instance.
*/
MVPHeap(AbstractPartition& pres,
AbstractPartition& scr,
AbstractPartition& tra,
MVPApplication& app)
: presenterStorage(pres),
screenStorage(scr),
transitionStorage(tra),
frontendApplication(app)
{
}
/** Finalizes an instance of the MVPHeap class. */
virtual ~MVPHeap()
{
}
AbstractPartition& presenterStorage; ///< A memory partition containing enough memory to hold the largest presenter.
AbstractPartition& screenStorage; ///< A memory partition containing enough memory to hold the largest view.
AbstractPartition& transitionStorage; ///< A memory partition containing enough memory to hold the largest transition.
MVPApplication& frontendApplication; ///< A reference to the MVPApplication instance.
};
} // namespace touchgfx
#endif // MVPHEAP_HPP

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ide-touchgfx-gen/Middlewares/ST/touchgfx/framework/include/mvp/Presenter.hpp Normal file
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/**
******************************************************************************
* This file is part of the TouchGFX 4.16.1 distribution.
*
* <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/**
* @file mvp/Presenter.hpp
*
* Declares the touchgfx::Presenter class.
*/
#ifndef PRESENTER_HPP
#define PRESENTER_HPP
namespace touchgfx
{
/**
* The Presenter base class that all application-specific presenters should derive from. Only
* contains activate and deactivate virtual functions which are called automatically
* during screen transition.
*/
class Presenter
{
public:
/**
* Place initialization code for the Presenter here.
*
* The activate function is called automatically when a screen transition causes this
* Presenter to become active. Place initialization code for the Presenter here.
*/
virtual void activate()
{
}
/**
* Place cleanup code for the Presenter here.
*
* The deactivate function is called automatically when a screen transition causes this
* Presenter to become inactive. Place cleanup code for the Presenter here.
*/
virtual void deactivate()
{
}
/** Finalizes an instance of the Presenter class. */
virtual ~Presenter()
{
}
protected:
/** Initializes a new instance of the Presenter class. */
Presenter()
{
}
};
} // namespace touchgfx
#endif // PRESENTER_HPP

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ide-touchgfx-gen/Middlewares/ST/touchgfx/framework/include/mvp/View.hpp Normal file
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/**
******************************************************************************
* This file is part of the TouchGFX 4.16.1 distribution.
*
* <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/**
* @file mvp/View.hpp
*
* Declares the touchgfx::View class.
*/
#ifndef VIEW_HPP
#define VIEW_HPP
#include <mvp/Presenter.hpp>
#include <touchgfx/Screen.hpp>
namespace touchgfx
{
/**
* This is a generic touchgfx::Screen specialization for normal applications. It provides a link
* to the Presenter class.
*
* @tparam T The type of Presenter associated with this view.
*
* @see Screen
*
* @note All views in the application must be a subclass of this type.
*/
template <class T>
class View : public Screen
{
public:
View()
: presenter(0)
{
}
/**
* Binds an instance of a specific Presenter type (subclass) to the View instance. This
* function is called automatically when a new presenter/view pair is activated.
*
* @param [in] presenter The specific Presenter to be associated with the View.
*/
void bind(T& presenter)
{
this->presenter = &presenter;
}
protected:
T* presenter; ///< Pointer to the Presenter associated with this view.
};
} // namespace touchgfx
#endif // VIEW_HPP