#include <UIListViewTest.h>

类 UIListViewTest_Horizontal 继承关系图:

UIListViewTest_Horizontal 的协作图:

Public 成员函数
	CREATE_FUNC (UIListViewTest_Horizontal)

	UIListViewTest_Horizontal ()

	~UIListViewTest_Horizontal ()

virtual bool	init () override

void	selectedItemEvent (cocos2d::Ref *sender, cocos2d::ui::ListView::EventType type)

virtual void	update (float dt) override

Public 成员函数继承自 UIScene
	UIScene ()

	~UIScene ()

virtual void	onEnter () override

Public 成员函数继承自 TestCase
	TestCase ()

	~TestCase ()

virtual std::string	title () const

virtual std::string	subtitle () const

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

Protected 成员函数
float	getItemPositionXInView (cocos2d::ui::Widget *item) const

void	updateItem (int itemID, int templateID)

Protected 属性
cocos2d::ui::Text *	_displayValueLabel = nullptr

int	_spawnCount = 4

int	_totalCount = 50

float	_bufferZone = 140.f

float	_itemTemplateWidth = 0.f

float	_updateInterval = 1.0f / 24

float	_updateTimer = 0.f

float	_lastContentPosX = 0.f

float	_reuseItemOffset = 0.f

cocos2d::ui::ListView *	_listView = nullptr

std::vector< std::string >	_array

Protected 属性继承自 UIScene
cocos2d::Layer *	_uiLayer

cocos2d::ui::Layout *	_widget

cocos2d::ui::Text *	_sceneTitle

Protected 属性继承自 TestCase
cocos2d::MenuItemImage *	_priorTestItem

cocos2d::MenuItemImage *	_restartTestItem

cocos2d::MenuItemImage *	_nextTestItem

cocos2d::Label *	_titleLabel

cocos2d::Label *	_subtitleLabel

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

详细描述

在文件 UIListViewTest.h 第 72 行定义.

构造及析构函数说明

◆ UIListViewTest_Horizontal()

UIListViewTest_Horizontal::UIListViewTest_Horizontal ( )

在文件 UIListViewTest.cpp 第 296 行定义.

297{

298}

◆ ~UIListViewTest_Horizontal()

UIListViewTest_Horizontal::~UIListViewTest_Horizontal ( )

在文件 UIListViewTest.cpp 第 300 行定义.

301{

302}

成员函数说明

◆ CREATE_FUNC()

UIListViewTest_Horizontal::CREATE_FUNC ( UIListViewTest_Horizontal )

◆ getItemPositionXInView()

float UIListViewTest_Horizontal::getItemPositionXInView ( cocos2d::ui::Widget * item ) const

protected

在文件 UIListViewTest.cpp 第 409 行定义.

{
    auto worldPos = item->getParent()->convertToWorldSpaceAR(item->getPosition());
    auto viewPos = this->_listView->convertToNodeSpaceAR(worldPos);
    return viewPos.x;
}

引用了 _listView.

被这些函数引用 update().

这是这个函数的调用关系图:

◆ init()

bool UIListViewTest_Horizontal::init ( )

overridevirtual

重载 UIScene .

在文件 UIListViewTest.cpp 第 304 行定义.

{
    if (UIScene::init())
    {
        Size widgetSize = _widget->getContentSize();
        
        _displayValueLabel = Text::create("There are 50 items, but we only create 5 templates",
                                          "fonts/Marker Felt.ttf",
                                          20);
        
        _displayValueLabel->setAnchorPoint(Vec2(0.5f, -1.0f));
        _displayValueLabel->setPosition(Vec2(widgetSize.width / 2.0f,
                                              widgetSize.height / 2.0f
                                             + _displayValueLabel->getContentSize().height * 2 + 20));
        
        _uiLayer->addChild(_displayValueLabel);
        
        
        Text* alert = Text::create("ListView horizontal", "fonts/Marker Felt.ttf", 30);
        alert->setColor(Color3B(159, 168, 176));
        alert->setPosition(Vec2(widgetSize.width / 2.0f,
                                widgetSize.height / 2.0f - alert->getContentSize().height * 3.075f));
        _uiLayer->addChild(alert);
        
        Layout* root = static_cast<Layout*>(_uiLayer->getChildByTag(81));
        
        Layout* background = static_cast<Layout*>(root->getChildByName("background_Panel"));
        Size backgroundSize = background->getContentSize();
        
        
        // create listview  data
        //The data is usually fetch from the server
        for (int i = 0; i < _totalCount; ++i)
        {
            std::string ccstr = StringUtils::format("listview_item_%d", i);
            _array.push_back(ccstr);
        }
        
        
        // Create the list view ex
        _listView = ListView::create();
        // set list view ex direction
        _listView->setDirection(ui::ScrollView::Direction::HORIZONTAL);
        _listView->setTouchEnabled(true);
        _listView->setBounceEnabled(true);
        _listView->setBackGroundImage("cocosui/green_edit.png");
        _listView->setBackGroundImageScale9Enabled(true);
        _listView->setContentSize(Size(240.0f, 130.0f));
        _listView->setPosition(Vec2((widgetSize.width - backgroundSize.width) / 2.0f +
                                    (backgroundSize.width - _listView->getContentSize().width) / 2.0f,
                                    (widgetSize.height - backgroundSize.height) / 2.0f +
                                    (backgroundSize.height - _listView->getContentSize().height) / 2.0f));
        _listView->addEventListener((ui::ListView::ccListViewCallback)CC_CALLBACK_2(UIListViewTest_Horizontal::selectedItemEvent, this));
        _listView->setScrollBarPositionFromCorner(Vec2(7, 7));
        _uiLayer->addChild(_listView);
        
        
        // create model
        Button* default_button = Button::create("cocosui/backtotoppressed.png",
                                                "cocosui/backtotopnormal.png");
        default_button->setName("Title Button");
        
        Layout *default_item = Layout::create();
        default_item->setTouchEnabled(true);
        default_item->setContentSize(default_button->getContentSize());
        default_button->setPosition(Vec2(default_item->getContentSize().width / 2.0f,
                                         default_item->getContentSize().height / 2.0f));
        default_item->addChild(default_button);
        
        // set model
        _listView->setItemModel(default_item);
        
        // set all items layout gravity
        _listView->setGravity(ListView::Gravity::CENTER_VERTICAL);
        
        //initial the data
        for (int i = 0; i < _totalCount; ++i) {
            if (i < _spawnCount) {
                Widget* item = default_item->clone();
                item->setTag(i);
                Button* btn = (Button*)item->getChildByName("Title Button");
                btn->setTitleText(_array.at(i));
                _listView->pushBackCustomItem(item);
            }
        }
      
        // set items margin
        float spacing = 4;
        _listView->setItemsMargin(spacing);
        _itemTemplateWidth = default_item->getContentSize().width;
        this->_reuseItemOffset = (_itemTemplateWidth + spacing) * _spawnCount;
        
        _listView->forceDoLayout();
        float totalWidth = _itemTemplateWidth * _totalCount + (_totalCount - 1) * 4;
        _listView->getInnerContainer()->setContentSize(Size(totalWidth, _listView->getInnerContainerSize().height));
        
        //update listview data
        this->scheduleUpdate();
        
        return true;
    }
    
    return false;
}

引用了 _array, _displayValueLabel, _itemTemplateWidth, _listView, _reuseItemOffset, _spawnCount, _totalCount, UIScene::_uiLayer, UIScene::_widget, UIScene::init() , 以及 selectedItemEvent().

函数调用图:

◆ selectedItemEvent()

void UIListViewTest_Horizontal::selectedItemEvent	(	cocos2d::Ref *	sender,
		cocos2d::ui::ListView::EventType	type
	)

在文件 UIListViewTest.cpp 第 463 行定义.

{
    switch (type)
    {
        case cocos2d::ui::ListView::EventType::ON_SELECTED_ITEM_START:
        {
            ListView* listView = static_cast<ListView*>(pSender);
            auto item = listView->getItem(listView->getCurSelectedIndex());
            log("select child start index = %d", item->getTag());
            break;
        }
        case cocos2d::ui::ListView::EventType::ON_SELECTED_ITEM_END:
        {
            ListView* listView = static_cast<ListView*>(pSender);
            auto item = listView->getItem(listView->getCurSelectedIndex());
            log("select child end index = %d", item->getTag());
            break;
        }
        default:
            break;
    }
}

被这些函数引用 init().

这是这个函数的调用关系图:

◆ update()

void UIListViewTest_Horizontal::update ( float dt )

overridevirtual

在文件 UIListViewTest.cpp 第 425 行定义.

{
    this->_updateTimer += dt;
    if (this->_updateTimer < this->_updateInterval) {
        return;
    }
    float totalWidth = _itemTemplateWidth * _totalCount + (_totalCount - 1) * 4;
    
    this->_updateTimer = 0;
    auto isRight = this->_listView->getInnerContainer()->getPosition().x < this->_lastContentPosX;
    auto items = _listView->getItems();
    
    for (int i = 0; i < _spawnCount && i < _totalCount; ++i) {
        auto item = items.at(i);
        auto itemPos = this->getItemPositionXInView(item);
        if (isRight) {
            if (itemPos < -_bufferZone && item->getPosition().x + _reuseItemOffset < totalWidth) {
                int itemID = item->getTag() + (int)items.size();
                item->setPositionX(item->getPositionX() + _reuseItemOffset);
                CCLOG("itemPos = %f, itemID = %d, templateID = %d", itemPos, itemID, i);
                this->updateItem(itemID, i);
            }
        }
        else {
            if (itemPos > _bufferZone + _listView->getContentSize().width &&
                item->getPosition().x - _reuseItemOffset >= 0) {
                
                item->setPositionX(item->getPositionX() - _reuseItemOffset);
                int itemID = item->getTag() - (int)items.size();
                CCLOG("itemPos = %f, itemID = %d, templateID = %d", itemPos, itemID, i);
                this->updateItem(itemID, i);
            }
        }
    }
    //update ListView Items
    this->_lastContentPosX = this->_listView->getInnerContainer()->getPosition().x;
}

引用了 _bufferZone, _itemTemplateWidth, _lastContentPosX, _listView, _reuseItemOffset, _spawnCount, _totalCount, _updateInterval, _updateTimer, getItemPositionXInView() , 以及 updateItem().

函数调用图:

◆ updateItem()

void UIListViewTest_Horizontal::updateItem	(	int	itemID,
		int	templateID
	)

protected

在文件 UIListViewTest.cpp 第 416 行定义.

{
    auto itemTemplate = _listView->getItems().at(templateID);
    Button* btn = (Button*)itemTemplate->getChildByName("Title Button");
    //If you have  the item ID and templateID, you could fill in the data here
    itemTemplate->setTag(itemID);
    btn->setTitleText(_array.at(itemID));
}

引用了 _array , 以及 _listView.

被这些函数引用 update().

这是这个函数的调用关系图:

类成员变量说明

◆ _array

std::vector<std::string> UIListViewTest_Horizontal::_array

protected

在文件 UIListViewTest.h 第 103 行定义.

被这些函数引用 init() , 以及 updateItem().

◆ _bufferZone

float UIListViewTest_Horizontal::_bufferZone = 140.f

protected

在文件 UIListViewTest.h 第 94 行定义.

被这些函数引用 update().

◆ _displayValueLabel

cocos2d::ui::Text* UIListViewTest_Horizontal::_displayValueLabel = nullptr

protected

在文件 UIListViewTest.h 第 87 行定义.

被这些函数引用 init().

◆ _itemTemplateWidth

float UIListViewTest_Horizontal::_itemTemplateWidth = 0.f

protected

在文件 UIListViewTest.h 第 95 行定义.

被这些函数引用 init() , 以及 update().

◆ _lastContentPosX

float UIListViewTest_Horizontal::_lastContentPosX = 0.f

protected

在文件 UIListViewTest.h 第 99 行定义.

被这些函数引用 update().

◆ _listView

cocos2d::ui::ListView* UIListViewTest_Horizontal::_listView = nullptr

protected

在文件 UIListViewTest.h 第 101 行定义.

被这些函数引用 getItemPositionXInView(), init(), update() , 以及 updateItem().

◆ _reuseItemOffset

float UIListViewTest_Horizontal::_reuseItemOffset = 0.f

protected

在文件 UIListViewTest.h 第 100 行定义.

被这些函数引用 init() , 以及 update().

◆ _spawnCount

int UIListViewTest_Horizontal::_spawnCount = 4

protected

在文件 UIListViewTest.h 第 90 行定义.

被这些函数引用 init() , 以及 update().

◆ _totalCount

int UIListViewTest_Horizontal::_totalCount = 50

protected

在文件 UIListViewTest.h 第 92 行定义.

被这些函数引用 init() , 以及 update().

◆ _updateInterval

float UIListViewTest_Horizontal::_updateInterval = 1.0f / 24

protected

在文件 UIListViewTest.h 第 97 行定义.

被这些函数引用 update().

◆ _updateTimer

float UIListViewTest_Horizontal::_updateTimer = 0.f

protected

在文件 UIListViewTest.h 第 98 行定义.

被这些函数引用 update().

该类的文档由以下文件生成:

/Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/UITest/CocoStudioGUITest/UIListViewTest/UIListViewTest.h
/Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/UITest/CocoStudioGUITest/UIListViewTest/UIListViewTest.cpp

Public 成员函数

Protected 成员函数

Protected 属性

额外继承的成员函数

详细描述

构造及析构函数说明

◆ UIListViewTest_Horizontal()

◆ ~UIListViewTest_Horizontal()

成员函数说明

◆ CREATE_FUNC()

◆ getItemPositionXInView()

◆ init()

◆ selectedItemEvent()

◆ update()

◆ updateItem()

类成员变量说明

◆ _array

◆ _bufferZone

◆ _displayValueLabel

◆ _itemTemplateWidth

◆ _lastContentPosX

◆ _listView

◆ _reuseItemOffset

◆ _spawnCount

◆ _totalCount

◆ _updateInterval

◆ _updateTimer