Nainosaur/gametext.cpp at main · HuagoSR/Nainosaur · GitHub

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#include "gametext.h"

GameText::GameText(QString str, QRect r, int time, QColor col, QObject *parent):
    QObject{parent},text(str),rect(r),displayTime(time),color(col)
{
    isEnd=0;
    isAlphaDecreasing=0;
    color.setAlpha(0);
}

void GameText::display(QPainter &painter)
{
    int alpha=color.alpha();
    if(alpha>=255)
    {
        if(displayTime>0)
        {
            displayTime--;
        }
        else
        {
            isAlphaDecreasing=true;
        }
    }
    if(isAlphaDecreasing)
    {
        if(alpha>5)  color.setAlpha(alpha-5);
        else
        {
            isEnd=true;
            emit end();
        }
    }
    else
    {
        color.setAlpha(std::min(255,alpha+5));
    }
    QFont font("黑体", 25);
    painter.setFont(font);
    painter.setPen(color);
    painter.drawText(rect, Qt::AlignCenter | Qt::TextWordWrap, text);
}

TextList::TextList(QRect r, QColor col, QObject *parent):
    QObject{parent},currentIndex(0),rect(r),color(col)
{

}

TextList::~TextList()
{
    clear();
}

bool TextList::isEnd()
{
    if(texts.isEmpty()) return true;
    return texts[size()-1]->isEnd;
}

int TextList::size()
{
    return texts.size();
}

void TextList::addText(QString str)
{
    GameText *gt=new GameText(str,rect,str.length()*4,color,this);
    texts.push_back(gt);
}

void TextList::clear()
{
    foreach (GameText* gt, texts) {
        if(gt!=nullptr)
        {
            delete gt;
            gt=nullptr;
        }
    }
    texts.clear();
}

void TextList::display(QPainter &painter)
{
    if(size()<=0) return;
    if(isEnd())
    {
        emit end(); return;
    }
    if(texts[currentIndex]->isEnd)
    {
        currentIndex++;
        if(currentIndex>=size())
        {
            emit end();
            return;
        }
    }

    texts[currentIndex]->display(painter);
}