ScrollViewDemo类 参考

#include <ClippingNodeTest.h>

类 ScrollViewDemo 继承关系图:

ScrollViewDemo 的协作图:

Public 成员函数
	CREATE_FUNC (ScrollViewDemo)
virtual std::string	title () const override
virtual std::string	subtitle () const override
virtual void	setup () override
void	onTouchesBegan (const std::vector< cocos2d::Touch * > &touches, cocos2d::Event *event)
void	onTouchesMoved (const std::vector< cocos2d::Touch * > &touches, cocos2d::Event *event)
void	onTouchesEnded (const std::vector< cocos2d::Touch * > &touches, cocos2d::Event *event)
Public 成员函数 继承自 BaseClippingNodeTest
	CREATE_FUNC (BaseClippingNodeTest)
	~BaseClippingNodeTest ()
virtual bool	init () override
Public 成员函数 继承自 TestCase
	TestCase ()
	~TestCase ()
virtual Type	getTestType () const
virtual float	getDuration () const
virtual std::string	getExpectedOutput () const
virtual std::string	getActualOutput () const
virtual void	restartTestCallback (cocos2d::Ref *sender)
virtual void	nextTestCallback (cocos2d::Ref *sender)
virtual void	priorTestCallback (cocos2d::Ref *sender)
virtual void	onBackCallback (cocos2d::Ref *sender)
void	setTestSuite (TestSuite *testSuite)
TestSuite *	getTestSuite () const
float	getRunTime () const
void	setTestCaseName (const std::string &name)
std::string	getTestCaseName () const
const cocos2d::Label *	getSubtitleLable () const
const cocos2d::MenuItemImage *	getRestartTestItem () const
virtual void	onEnter () override

Private 属性
bool	_scrolling
cocos2d::Vec2	_lastPoint

额外继承的成员函数
Public 类型 继承自 TestCase
enum class	Type { ROBUSTNESS , UNIT , GRAPHICAL_STATIC , MANUAL }
Public 属性 继承自 TestCase
CC_CONSTRUCTOR_ACCESS	__pad0__: virtual bool init() override
Protected 属性 继承自 TestCase
cocos2d::MenuItemImage *	_priorTestItem
cocos2d::MenuItemImage *	_restartTestItem
cocos2d::MenuItemImage *	_nextTestItem
cocos2d::Label *	_titleLabel
cocos2d::Label *	_subtitleLabel

详细描述

在文件 ClippingNodeTest.h 第 150 行定义.

成员函数说明

CREATE_FUNC()

ScrollViewDemo::CREATE_FUNC

(

ScrollViewDemo

)

onTouchesBegan()

void ScrollViewDemo::onTouchesBegan	(	const std::vector< cocos2d::Touch * > &	touches,
		cocos2d::Event *	event
	)

在文件 ClippingNodeTest.cpp 第 488 行定义.

{
    Touch *touch = touches[0];
    auto clipper = this->getChildByTag(kTagClipperNode);
    Vec2 point = clipper->convertToNodeSpace(Director::getInstance()->convertToGL(touch->getLocationInView()));
    auto rect = Rect(0, 0, clipper->getContentSize().width, clipper->getContentSize().height);
    _scrolling = rect.containsPoint(point);
    _lastPoint = point;
}

引用了 _lastPoint, _scrolling , 以及 kTagClipperNode.

被这些函数引用 setup().

这是这个函数的调用关系图:

onTouchesEnded()

void ScrollViewDemo::onTouchesEnded	(	const std::vector< cocos2d::Touch * > &	touches,
		cocos2d::Event *	event
	)

在文件 ClippingNodeTest.cpp 第 510 行定义.

{
    if (!_scrolling) return;
    _scrolling = false;
}

引用了 _scrolling.

被这些函数引用 setup().

这是这个函数的调用关系图:

onTouchesMoved()

void ScrollViewDemo::onTouchesMoved	(	const std::vector< cocos2d::Touch * > &	touches,
		cocos2d::Event *	event
	)

在文件 ClippingNodeTest.cpp 第 498 行定义.

{
    if (!_scrolling) return;
    Touch *touch = touches[0];
    auto clipper = this->getChildByTag(kTagClipperNode);
    auto point = clipper->convertToNodeSpace(Director::getInstance()->convertToGL(touch->getLocationInView()));
    Vec2 diff = point - _lastPoint;
    auto content = clipper->getChildByTag(kTagContentNode);
    content->setPosition(content->getPosition() + diff);
    _lastPoint = point;
}

引用了 _lastPoint, _scrolling, kTagClipperNode , 以及 kTagContentNode.

被这些函数引用 setup().

这是这个函数的调用关系图:

setup()

void ScrollViewDemo::setup ( )

overridevirtual

重载 BaseClippingNodeTest .

在文件 ClippingNodeTest.cpp 第 452 行定义.

{
    auto clipper = ClippingNode::create();
    clipper->setTag( kTagClipperNode );
    clipper->setContentSize(  Size(200.0f, 200.0f) );
    clipper->setAnchorPoint(  Vec2(0.5f, 0.5f) );
    clipper->setPosition(this->getContentSize().width / 2, this->getContentSize().height / 2);
    clipper->runAction(RepeatForever::create(RotateBy::create(1, 45)));
    this->addChild(clipper);
 
    auto stencil = DrawNode::create();
    Vec2 rectangle[4];
    rectangle[0] = Vec2(0.0f, 0.0f);
    rectangle[1] = Vec2(clipper->getContentSize().width, 0.0f);
    rectangle[2] = Vec2(clipper->getContentSize().width, clipper->getContentSize().height);
    rectangle[3] = Vec2(0.0f, clipper->getContentSize().height);
    
    Color4F white(1, 1, 1, 1);
    stencil->drawPolygon(rectangle, 4, white, 1, white);
    clipper->setStencil(stencil);
 
    auto content = Sprite::create(s_back2);
    content->setTag( kTagContentNode );
    content->setAnchorPoint(  Vec2(0.5f, 0.5f) );
    content->setPosition(clipper->getContentSize().width / 2, clipper->getContentSize().height / 2);
    clipper->addChild(content);
    
    _scrolling = false;
 
    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesBegan = CC_CALLBACK_2(ScrollViewDemo::onTouchesBegan, this);
    listener->onTouchesMoved = CC_CALLBACK_2(ScrollViewDemo::onTouchesMoved, this);
    listener->onTouchesEnded = CC_CALLBACK_2(ScrollViewDemo::onTouchesEnded, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
}

引用了 _scrolling, kTagClipperNode, kTagContentNode, onTouchesBegan(), onTouchesEnded(), onTouchesMoved() , 以及 s_back2.

函数调用图:

subtitle()

std::string ScrollViewDemo::subtitle ( ) const

overridevirtual

重载 TestCase .

在文件 ClippingNodeTest.cpp 第 447 行定义.

{
    return "Move/drag to scroll the content";
}

title()

std::string ScrollViewDemo::title ( ) const

overridevirtual

重载 BaseClippingNodeTest .

在文件 ClippingNodeTest.cpp 第 442 行定义.

{
    return "Scroll View Demo";
}

类成员变量说明

_lastPoint

cocos2d::Vec2 ScrollViewDemo::_lastPoint

private

在文件 ClippingNodeTest.h 第 163 行定义.

被这些函数引用 onTouchesBegan() , 以及 onTouchesMoved().

_scrolling

bool ScrollViewDemo::_scrolling

private

在文件 ClippingNodeTest.h 第 162 行定义.

被这些函数引用 onTouchesBegan(), onTouchesEnded(), onTouchesMoved() , 以及 setup().

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该类的文档由以下文件生成:

• /Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/ClippingNodeTest/ClippingNodeTest.h
• /Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/ClippingNodeTest/ClippingNodeTest.cpp