axmol/core/ui/UITextField.cpp

/****************************************************************************
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

https://axis-project.github.io/

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#include "ui/UITextField.h"
#include "platform/CCFileUtils.h"
#include "ui/UIHelper.h"
#include "base/ccUTF8.h"
#include "2d/CCCamera.h"

NS_CC_BEGIN

namespace ui
{

UICCTextField* UICCTextField::create()
{
    UICCTextField* ret = new UICCTextField();
    ret->autorelease();
    return ret;
}

UICCTextField::UICCTextField()
    : _maxLengthEnabled(false)
    , _maxLength(0)
    , _attachWithIME(false)
    , _detachWithIME(false)
    , _insertText(false)
    , _deleteBackward(false)
{}

UICCTextField::~UICCTextField() {}

UICCTextField* UICCTextField::create(std::string_view placeholder, std::string_view fontName, float fontSize)
{
    UICCTextField* pRet = new UICCTextField();

    if (pRet->initWithPlaceHolder("", fontName, fontSize))
    {
        pRet->autorelease();
        if (!placeholder.empty())
        {
            pRet->setPlaceHolder(placeholder);
        }
        return pRet;
    }
    CC_SAFE_DELETE(pRet);

    return nullptr;
}

void UICCTextField::onEnter()
{
    TextFieldTTF::onEnter();
    TextFieldTTF::setDelegate(this);
}

bool UICCTextField::onTextFieldAttachWithIME(TextFieldTTF* /*pSender*/)
{
    setAttachWithIME(true);
    return false;
}

bool UICCTextField::onTextFieldInsertText(TextFieldTTF* /*pSender*/, const char* text, size_t nLen)
{
    if (nLen == 1 && strcmp(text, "\n") == 0)
    {
        return false;
    }
    setInsertText(true);
    if (_maxLengthEnabled)
    {
        if (static_cast<int>(TextFieldTTF::getCharCount()) >= _maxLength)
        {
            return true;
        }
    }

    return false;
}

bool UICCTextField::onTextFieldDeleteBackward(TextFieldTTF* /*pSender*/, const char* /*delText*/, size_t /*nLen*/)
{
    setDeleteBackward(true);
    return false;
}

bool UICCTextField::onTextFieldDetachWithIME(TextFieldTTF* /*pSender*/)
{
    setDetachWithIME(true);
    return false;
}

void UICCTextField::insertText(const char* text, size_t len)
{
    std::string input_text = text;

    if (strcmp(text, "\n") != 0)
    {
        if (_maxLengthEnabled)
        {
            int32_t text_count = StringUtils::getCharacterCountInUTF8String(getString());
            if (text_count >= _maxLength)
            {
                // password
                if (this->isSecureTextEntry())
                {
                    setPasswordText(getString());
                }
                return;
            }

            int32_t input_count = StringUtils::getCharacterCountInUTF8String(text);
            int32_t total       = text_count + input_count;

            if (total > _maxLength)
            {
                int32_t length = _maxLength - text_count;

                input_text = Helper::getSubStringOfUTF8String(input_text, 0, length);
                len        = input_text.length();
            }
        }
    }
    TextFieldTTF::insertText(input_text.c_str(), len);
}

void UICCTextField::openIME()
{
    TextFieldTTF::attachWithIME();
}

void UICCTextField::closeIME()
{
    TextFieldTTF::detachWithIME();
}

void UICCTextField::setMaxLengthEnabled(bool enable)
{
    _maxLengthEnabled = enable;
}

bool UICCTextField::isMaxLengthEnabled() const
{
    return _maxLengthEnabled;
}

void UICCTextField::setMaxLength(int length)
{
    _maxLength = length;
}

int UICCTextField::getMaxLength() const
{
    return _maxLength;
}

std::size_t UICCTextField::getCharCount() const
{
    return TextFieldTTF::getCharCount();
}

void UICCTextField::setPasswordEnabled(bool enable)
{
    this->setSecureTextEntry(enable);
}

bool UICCTextField::isPasswordEnabled() const
{
    return this->isSecureTextEntry();
}

void UICCTextField::setPasswordStyleText(std::string_view styleText)
{
    this->setPasswordTextStyle(styleText);
}

void UICCTextField::setPasswordText(std::string_view text)
{
    std::string tempStr = "";
    int32_t text_count  = StringUtils::getCharacterCountInUTF8String(text);
    int32_t max         = text_count;

    if (_maxLengthEnabled)
    {
        if (text_count > _maxLength)
        {
            max = _maxLength;
        }
    }

    for (int i = 0; i < max; ++i)
    {
        tempStr.append(_passwordStyleText);
    }

    Label::setString(tempStr);
}

void UICCTextField::setAttachWithIME(bool attach)
{
    _attachWithIME = attach;
}

bool UICCTextField::getAttachWithIME() const
{
    return _attachWithIME;
}

void UICCTextField::setDetachWithIME(bool detach)
{
    _detachWithIME = detach;
}

bool UICCTextField::getDetachWithIME() const
{
    return _detachWithIME;
}

void UICCTextField::setInsertText(bool insert)
{
    _insertText = insert;
}

bool UICCTextField::getInsertText() const
{
    return _insertText;
}

void UICCTextField::setDeleteBackward(bool deleteBackward)
{
    _deleteBackward = deleteBackward;
}

bool UICCTextField::getDeleteBackward() const
{
    return _deleteBackward;
}

static const int TEXTFIELD_RENDERER_Z = (-1);

IMPLEMENT_CLASS_GUI_INFO(TextField)

TextField::TextField()
    : _textFieldRenderer(nullptr)
    , _touchWidth(0.0f)
    , _touchHeight(0.0f)
    , _useTouchArea(false)
    , _textFieldEventListener(nullptr)
    , _eventCallback(nullptr)
    , _textFieldRendererAdaptDirty(true)
    , _fontName("Thonburi")
    , _fontSize(10)
    , _fontType(FontType::SYSTEM)
{}

TextField::~TextField()
{
    _textFieldEventListener = nullptr;
}

TextField* TextField::create()
{
    TextField* widget = new TextField();
    if (widget->init())
    {
        widget->autorelease();
        return widget;
    }
    CC_SAFE_DELETE(widget);
    return nullptr;
}

TextField* TextField::create(std::string_view placeholder, std::string_view fontName, int fontSize)
{
    TextField* widget = new TextField();
    if (widget->init())
    {
        widget->setFontName(fontName);
        widget->setFontSize(fontSize);
        widget->setPlaceHolder(placeholder);
        widget->autorelease();
        return widget;
    }
    CC_SAFE_DELETE(widget);
    return nullptr;
}

bool TextField::init()
{
    if (Widget::init())
    {
        setTouchEnabled(true);
        return true;
    }
    return false;
}

void TextField::onEnter()
{
    Widget::onEnter();
    scheduleUpdate();
}

void TextField::initRenderer()
{
    _textFieldRenderer = UICCTextField::create();
    addProtectedChild(_textFieldRenderer, TEXTFIELD_RENDERER_Z, -1);
}

void TextField::setTouchSize(const Vec2& size)
{
    _touchWidth  = size.width;
    _touchHeight = size.height;
}

void TextField::setTouchAreaEnabled(bool enable)
{
    _useTouchArea = enable;
}

bool TextField::hitTest(const Vec2& pt, const Camera* camera, Vec3* /*p*/) const
{
    if (false == _useTouchArea)
    {
        return Widget::hitTest(pt, camera, nullptr);
    }

    auto size = getContentSize();
    auto anch = getAnchorPoint();
    Rect rect((size.width - _touchWidth) * anch.x, (size.height - _touchHeight) * anch.y, _touchWidth, _touchHeight);
    return isScreenPointInRect(pt, camera, getWorldToNodeTransform(), rect, nullptr);
}

Vec2 TextField::getTouchSize() const
{
    return Vec2(_touchWidth, _touchHeight);
}

void TextField::setString(std::string_view text)
{
    std::string strText(text);

    if (isMaxLengthEnabled())
    {
        int max            = _textFieldRenderer->getMaxLength();
        int32_t text_count = StringUtils::getCharacterCountInUTF8String(text);
        if (text_count > max)
        {
            strText = Helper::getSubStringOfUTF8String(strText, 0, max);
        }
    }

    if (isPasswordEnabled())
    {
        _textFieldRenderer->setPasswordText(strText);
        _textFieldRenderer->setString("");
        _textFieldRenderer->insertText(strText.c_str(), strText.size());
    }
    else
    {
        _textFieldRenderer->setString(strText);
    }
    _textFieldRendererAdaptDirty = true;
    updateContentSizeWithTextureSize(_textFieldRenderer->getContentSize());
}

void TextField::setPlaceHolder(std::string_view value)
{
    _textFieldRenderer->setPlaceHolder(value);
    _textFieldRendererAdaptDirty = true;
    updateContentSizeWithTextureSize(_textFieldRenderer->getContentSize());
}

std::string_view TextField::getPlaceHolder() const
{
    return _textFieldRenderer->getPlaceHolder();
}

const Color4B& TextField::getPlaceHolderColor() const
{
    return _textFieldRenderer->getColorSpaceHolder();
}

void TextField::setPlaceHolderColor(const cocos2d::Color3B& color)
{
    _textFieldRenderer->setColorSpaceHolder(color);
}

void TextField::setPlaceHolderColor(const cocos2d::Color4B& color)
{
    _textFieldRenderer->setColorSpaceHolder(color);
}

const Color4B& TextField::getTextColor() const
{
    return _textFieldRenderer->getTextColor();
}

void TextField::setTextColor(const cocos2d::Color4B& textColor)
{
    _textFieldRenderer->setTextColor(textColor);
}

void TextField::setFontSize(int size)
{
    if (_fontType == FontType::SYSTEM)
    {
        _textFieldRenderer->setSystemFontSize(size);
    }
    else if (_fontType == FontType::BMFONT)
    {
        _textFieldRenderer->setBMFontSize(size);
    }
    else
    {
        TTFConfig config = _textFieldRenderer->getTTFConfig();
        config.fontSize  = size;
        _textFieldRenderer->setTTFConfig(config);
    }
    _fontSize                    = size;
    _textFieldRendererAdaptDirty = true;
    updateContentSizeWithTextureSize(_textFieldRenderer->getContentSize());
}

int TextField::getFontSize() const
{
    return _fontSize;
}

void TextField::setFontName(std::string_view name)
{
    if (FileUtils::getInstance()->isFileExist(name))
    {
        std::string lcName{name};
        std::transform(lcName.begin(), lcName.end(), lcName.begin(), ::tolower);
        if (lcName.substr(lcName.length() - 4) == ".fnt")
        {
            _textFieldRenderer->setBMFontFilePath(name);
            _fontType = FontType::BMFONT;
        }
        else
        {
            TTFConfig config    = _textFieldRenderer->getTTFConfig();
            config.fontFilePath = name;
            config.fontSize     = _fontSize;
            _textFieldRenderer->setTTFConfig(config);
            _fontType = FontType::TTF;
        }
    }
    else
    {
        _textFieldRenderer->setSystemFontName(name);
        if (_fontType == FontType::TTF)
        {
            _textFieldRenderer->requestSystemFontRefresh();
        }
        _fontType = FontType::SYSTEM;
    }
    _fontName                    = name;
    _textFieldRendererAdaptDirty = true;
    updateContentSizeWithTextureSize(_textFieldRenderer->getContentSize());
}

std::string_view TextField::getFontName() const
{
    return _fontName;
}

void TextField::didNotSelectSelf()
{
    _textFieldRenderer->detachWithIME();
}

std::string_view TextField::getString() const
{
    return _textFieldRenderer->getString();
}

int TextField::getStringLength() const
{
    return _textFieldRenderer->getStringLength();
}

bool TextField::onTouchBegan(Touch* touch, Event* unusedEvent)
{
    bool pass = Widget::onTouchBegan(touch, unusedEvent);
    if (_hitted)
    {
        if (isFocusEnabled())
        {
            requestFocus();
        }

        _textFieldRenderer->attachWithIME();
    }
    else
    {
        this->didNotSelectSelf();
    }
    return pass;
}

void TextField::setMaxLengthEnabled(bool enable)
{
    _textFieldRenderer->setMaxLengthEnabled(enable);
}

bool TextField::isMaxLengthEnabled() const
{
    return _textFieldRenderer->isMaxLengthEnabled();
}

void TextField::setMaxLength(int length)
{
    _textFieldRenderer->setMaxLength(length);

    setString(getString());
}

int TextField::getMaxLength() const
{
    return _textFieldRenderer->getMaxLength();
}

void TextField::setPasswordEnabled(bool enable)
{
    _textFieldRenderer->setPasswordEnabled(enable);
}

bool TextField::isPasswordEnabled() const
{
    return _textFieldRenderer->isPasswordEnabled();
}

void TextField::setPasswordStyleText(std::string_view styleText)
{
    _textFieldRenderer->setPasswordStyleText(styleText);

    setString(getString());
}

std::string_view TextField::getPasswordStyleText() const
{
    return _textFieldRenderer->getPasswordTextStyle();
}

void TextField::update(float /*dt*/)
{
    if (getDetachWithIME())
    {
        detachWithIMEEvent();
        setDetachWithIME(false);
    }

    if (getAttachWithIME())
    {
        attachWithIMEEvent();
        setAttachWithIME(false);
    }

    if (getDeleteBackward())
    {
        _textFieldRendererAdaptDirty = true;
        updateContentSizeWithTextureSize(_textFieldRenderer->getContentSize());

        deleteBackwardEvent();
        setDeleteBackward(false);
    }

    if (getInsertText())
    {
        // we update the content size first such that when user call getContentSize() in event callback won't be wrong
        _textFieldRendererAdaptDirty = true;
        updateContentSizeWithTextureSize(_textFieldRenderer->getContentSize());

        insertTextEvent();
        setInsertText(false);
    }
}

bool TextField::getAttachWithIME() const
{
    return _textFieldRenderer->getAttachWithIME();
}

void TextField::setAttachWithIME(bool attach)
{
    _textFieldRenderer->setAttachWithIME(attach);
}

bool TextField::getDetachWithIME() const
{
    return _textFieldRenderer->getDetachWithIME();
}

void TextField::setDetachWithIME(bool detach)
{
    _textFieldRenderer->setDetachWithIME(detach);
}

bool TextField::getInsertText() const
{
    return _textFieldRenderer->getInsertText();
}

void TextField::setInsertText(bool insertText)
{
    _textFieldRenderer->setInsertText(insertText);
}

bool TextField::getDeleteBackward() const
{
    return _textFieldRenderer->getDeleteBackward();
}

void TextField::setDeleteBackward(bool deleteBackward)
{
    _textFieldRenderer->setDeleteBackward(deleteBackward);
}

void TextField::attachWithIMEEvent()
{
    this->retain();
    if (_eventCallback)
    {
        _eventCallback(this, EventType::ATTACH_WITH_IME);
    }
    if (_ccEventCallback)
    {
        _ccEventCallback(this, static_cast<int>(EventType::ATTACH_WITH_IME));
    }
    this->release();
}

void TextField::detachWithIMEEvent()
{
    this->retain();
    if (_eventCallback)
    {
        _eventCallback(this, EventType::DETACH_WITH_IME);
    }
    if (_ccEventCallback)
    {
        _ccEventCallback(this, static_cast<int>(EventType::DETACH_WITH_IME));
    }
    this->release();
}

void TextField::insertTextEvent()
{
    this->retain();
    if (_eventCallback)
    {
        _eventCallback(this, EventType::INSERT_TEXT);
    }
    if (_ccEventCallback)
    {
        _ccEventCallback(this, static_cast<int>(EventType::INSERT_TEXT));
    }
    this->release();
}

void TextField::deleteBackwardEvent()
{
    this->retain();
    if (_eventCallback)
    {
        _eventCallback(this, EventType::DELETE_BACKWARD);
    }
    if (_ccEventCallback)
    {
        _ccEventCallback(this, static_cast<int>(EventType::DELETE_BACKWARD));
    }
    this->release();
}

void TextField::addEventListener(const ccTextFieldCallback& callback)
{
    _eventCallback = callback;
}

void TextField::onSizeChanged()
{
    Widget::onSizeChanged();
    _textFieldRendererAdaptDirty = true;
}

void TextField::adaptRenderers()
{
    if (_textFieldRendererAdaptDirty)
    {
        textfieldRendererScaleChangedWithSize();
        _textFieldRendererAdaptDirty = false;
    }
}

void TextField::textfieldRendererScaleChangedWithSize()
{
    if (!_ignoreSize)
    {
        _textFieldRenderer->setDimensions(_contentSize.width, _contentSize.height);
    }
    _textFieldRenderer->setPosition(_contentSize.width / 2.0f, _contentSize.height / 2.0f);
}

Vec2 TextField::getAutoRenderSize()
{
    Vec2 virtualSize = _textFieldRenderer->getContentSize();
    if (!_ignoreSize)
    {
        _textFieldRenderer->setDimensions(0, 0);
        virtualSize = _textFieldRenderer->getContentSize();
        _textFieldRenderer->setDimensions(_contentSize.width, _contentSize.height);
    }

    return virtualSize;
}

Vec2 TextField::getVirtualRendererSize() const
{
    return _textFieldRenderer->getContentSize();
}

Node* TextField::getVirtualRenderer()
{
    return _textFieldRenderer;
}

std::string TextField::getDescription() const
{
    return "TextField";
}

void TextField::attachWithIME()
{
    _textFieldRenderer->attachWithIME();
}

void TextField::detachWithIME()
{
    _textFieldRenderer->detachWithIME();
}

Widget* TextField::createCloneInstance()
{
    return TextField::create();
}

void TextField::copySpecialProperties(Widget* widget)
{
    TextField* textField = dynamic_cast<TextField*>(widget);
    if (textField)
    {
        setString(textField->_textFieldRenderer->getString());
        setPlaceHolder(textField->getString());
        setFontSize(textField->_fontSize);
        setFontName(textField->_fontName);
        setMaxLengthEnabled(textField->isMaxLengthEnabled());
        setMaxLength(textField->getMaxLength());
        setPasswordEnabled(textField->isPasswordEnabled());
        setPasswordStyleText(textField->getPasswordStyleText());
        setAttachWithIME(textField->getAttachWithIME());
        setDetachWithIME(textField->getDetachWithIME());
        setInsertText(textField->getInsertText());
        setDeleteBackward(textField->getDeleteBackward());
        _eventCallback          = textField->_eventCallback;
        _ccEventCallback        = textField->_ccEventCallback;
        _textFieldEventListener = textField->_textFieldEventListener;
    }
}

void TextField::setTextAreaSize(const Vec2& size)
{
    this->setContentSize(size);
}

void TextField::setTextHorizontalAlignment(TextHAlignment alignment)
{
    _textFieldRenderer->setHorizontalAlignment(alignment);
}

TextHAlignment TextField::getTextHorizontalAlignment() const
{
    return _textFieldRenderer->getHorizontalAlignment();
}

void TextField::setTextVerticalAlignment(TextVAlignment alignment)
{
    _textFieldRenderer->setVerticalAlignment(alignment);
}

TextVAlignment TextField::getTextVerticalAlignment() const
{
    return _textFieldRenderer->getVerticalAlignment();
}

void TextField::setCursorEnabled(bool enabled)
{
    _textFieldRenderer->setCursorEnabled(enabled);
}

void TextField::setCursorChar(char cursor)
{
    _textFieldRenderer->setCursorChar(cursor);
}

void TextField::setCursorPosition(std::size_t cursorPosition)
{
    _textFieldRenderer->setCursorPosition(cursorPosition);
}

void TextField::setCursorFromPoint(const Vec2& point, const Camera* camera)
{
    _textFieldRenderer->setCursorFromPoint(point, camera);
}

}  // namespace ui

NS_CC_END