ADragArea.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
//
// Created by alex2 on 29.11.2020.
//
 
#pragma once
 
 
#include "AViewContainer.h"

class API_AUI_VIEWS ADragArea: public AViewContainer {
private:
   _weak<AViewContainerBase> mDraggedContainer;
   glm::ivec2 mInitialMousePos;
 
 
   void setValidPositionFor(const _<AView>& targetView, const glm::ivec2& newPosition);
public:
   ADragArea();
   void startDragging(AViewContainerBase* container);
   void handleMouseMove();
 
   void endDragging();
 
   void applyGeometryToChildren() override;
 
   class API_AUI_VIEWS ADraggableHandle: public AViewContainerBase {
       friend class ADragArea;
   private:
       std::tuple<ADragArea*, AViewContainerBase*> getDragAreaAndDraggingView();
       bool mDragging = false;
       bool mCheckForClickConsumption = true;
 
   public:
       ADraggableHandle(bool checkForClickConsumption = false) : mCheckForClickConsumption(checkForClickConsumption) {}
 
       void onPointerPressed(const APointerPressedEvent& event) override;
       void onPointerReleased(const APointerReleasedEvent& event) override;
 
   signals:
       emits<glm::ivec2> mouseMove;
   };
 
   static _<AView>            convertToDraggable(const _<AView>& view, bool checkForClickConsumption = true);
   static _<ADraggableHandle> convertToDraggableContainer(const _<AViewContainer>& view, bool checkForClickConsumption = true);
};
 
 

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