cocos-enhance-kit/cocos2d-x/cocos/2d/CCTTFLabelRenderer.cpp

/****************************************************************************
Copyright (c) 2020 Xiamen Yaji Software Co., Ltd.

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Permission is hereby granted, free of charge, to any person obtaining a copy
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#include "cocos/2d/CCTTFLabelRenderer.h"

#include "MiddlewareMacro.h"
#include "renderer/renderer/Pass.h"
#include "renderer/renderer/Technique.h"
#include "renderer/scene/RenderFlow.hpp"
#include "renderer/scene/assembler/CustomAssembler.hpp"
#include "cocos/editor-support/IOBuffer.h"
#include "cocos/editor-support/middleware-adapter.h"
#include "cocos/editor-support/MiddlewareManager.h"
#include "cocos/platform/CCApplication.h"
#include "cocos/platform/CCFileUtils.h"
#include "scripting/js-bindings/jswrapper/SeApi.h"

#include "CCLabelLayout.h"
#include "base/ccConfig.h"
#if CC_ENABLE_TTF_LABEL_RENDERER

USING_NS_CC;
USING_NS_MW;
using namespace renderer;

namespace cocos2d {

    LabelRenderer::LabelRenderer()
    {
    }

    LabelRenderer::~LabelRenderer()
    {
        CC_SAFE_RELEASE_NULL(_effect);
        CC_SAFE_RELEASE_NULL(_nodeProxy);
        if(_componentObj) _componentObj->decRef();
    }


    void LabelRenderer::bindNodeProxy(cocos2d::renderer::NodeProxy* node) {
        if (node == _nodeProxy) return;
        CC_SAFE_RELEASE(_nodeProxy);
        _nodeProxy = node;
        CC_SAFE_RETAIN(_nodeProxy);
    }
    
    void LabelRenderer::setEffect(cocos2d::renderer::EffectVariant* arg) {
        if (_effect == arg) return;

        CC_SAFE_RELEASE(_effect);
        _effect = arg;
        CC_SAFE_RETAIN(arg);
        _cfg->updateFlags |= UPDATE_EFFECT;
    }

    void LabelRenderer::bindSharedBlock(se::Object * selfObj, void *cfg, void *layout)
    {
        _selfObj = selfObj;
        _cfg = static_cast<decltype(_cfg)>(cfg);
        _layoutInfo = static_cast<decltype(_layoutInfo)>(layout);
    }


    void LabelRenderer::genStringLayout()
    {
        std::string fontPath = getFontPath();
        std::string text = getString();
        if (!fontPath.empty() && !text.empty() && !_stringLayout)
        {
            _stringLayout.reset(new LabelLayout(this));
            _stringLayout->init(fontPath, text, _cfg->fontSize, _cfg->fontSizeRetina, _layoutInfo);
        }
    }

    void LabelRenderer::render()
    {
        std::string text = getString();
        std::string fontPath = getFontPath();
        if (!_effect || text.empty() || fontPath.empty()) return;

        if (!_stringLayout) {
            genStringLayout();
            _cfg->updateFlags &= ~(UPDATE_FONT | UPDATE_EFFECT);
        }

        renderIfChange();

    }

    void LabelRenderer::renderIfChange()
    {
        if (!_stringLayout) return;

        if (_cfg->updateFlags & UPDATE_FONT || _cfg->updateFlags & UPDATE_EFFECT)
        {
            // update font & string
            _stringLayout.reset();
            genStringLayout();

            doRender();            
        }
        else if (_cfg->updateFlags & UPDATE_CONTENT)
        {
            std::string text = getString();            // update content only
            if (_stringLayout->isInited())
            {
                _stringLayout->setString(text, true);
                doRender();
            }
        }

        _cfg->updateFlags = 0;
    }

    void LabelRenderer::doRender()
    {
        if (_stringLayout && _effect && _nodeProxy && _nodeProxy->getAssembler())
        {
            auto *assembler = (CustomAssembler*)_nodeProxy->getAssembler();
            _stringLayout->fillAssembler(assembler, _effect);
        }
    }

    std::string LabelRenderer::getString() {
        se::Value str;
        assert(_selfObj);
        _selfObj->getProperty("string", &str);
        return str.toString();
    }

    std::string LabelRenderer::getFontPath() {
        se::Value str;
        assert(_selfObj);
        _selfObj->getProperty("fontPath", &str);
        return str.toString();
    }


    void LabelRenderer::setJsComponent(se::Object *component)
    {
        if(_componentObj == component) return;
        if(_componentObj) _componentObj->decRef();
        if(component) component->incRef();
        _componentObj = component;
    }
}
#endif