mirror of https://github.com/axmolengine/axmol.git
85 lines
2.0 KiB
C++
85 lines
2.0 KiB
C++
#include "DragDropManager.h"
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#include "UIObjectFactory.h"
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#include "GRoot.h"
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NS_FGUI_BEGIN
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USING_NS_CC;
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DragDropManager* DragDropManager::_inst = nullptr;
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DragDropManager::DragDropManager() :
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_agent(nullptr)
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{
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_agent = (GLoader*)UIObjectFactory::newObject(ObjectType::LOADER);
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_agent->retain();
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_agent->setTouchable(false);
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_agent->setDraggable(true);
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_agent->setSize(100, 100);
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_agent->setPivot(0.5f, 0.5f, true);
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_agent->setAlign(TextHAlignment::CENTER);
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_agent->setVerticalAlign(TextVAlignment::CENTER);
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_agent->setSortingOrder(INT_MAX);
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_agent->addEventListener(UIEventType::DragEnd, CC_CALLBACK_1(DragDropManager::onDragEnd, this));
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}
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DragDropManager::~DragDropManager()
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{
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CC_SAFE_RELEASE(_agent);
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}
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DragDropManager* DragDropManager::getInstance()
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{
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if (_inst == nullptr)
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_inst = new DragDropManager();
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return _inst;
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}
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void DragDropManager::startDrag(const std::string & icon, const Value& sourceData, int touchPointID)
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{
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if (_agent->getParent() != nullptr)
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return;
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_sourceData = sourceData;
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_agent->setURL(icon);
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UIRoot->addChild(_agent);
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Vec2 pt = UIRoot->globalToLocal(UIRoot->getTouchPosition(touchPointID));
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_agent->setPosition(pt.x, pt.y);
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_agent->startDrag(touchPointID);
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}
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void DragDropManager::cancel()
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{
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if (_agent->getParent() != nullptr)
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{
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_agent->stopDrag();
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UIRoot->removeChild(_agent);
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_sourceData = Value::Null;
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}
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}
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void DragDropManager::onDragEnd(EventContext * context)
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{
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if (_agent->getParent() == nullptr) //cancelled
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return;
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UIRoot->removeChild(_agent);
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GObject* obj = UIRoot->getTouchTarget();
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while (obj != nullptr)
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{
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if (dynamic_cast<GComponent*>(obj))
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{
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if (obj->hasEventListener(UIEventType::Drop))
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{
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//obj->requestFocus();
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obj->dispatchEvent(UIEventType::Drop, nullptr, _sourceData);
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return;
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}
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}
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obj = obj->getParent();
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}
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}
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NS_FGUI_END |