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ChatBox.cpp
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ChatBox.cpp
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#include "ChatBox.h"
#include "ui_ChatBox.h"
ChatMsg::ChatMsg(){}
ChatMsg::ChatMsg(string message, int msgLife):life(msgLife),msg(message){
}
ChatBox::ChatBox(QWidget *parent) :QDialog(parent,Qt::FramelessWindowHint),ui(new Ui::ChatBox){
ui->setupUi(this);
this->setAttribute(Qt::WA_TranslucentBackground);
//Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint|Qt::SubWindow
//资源读取
chatBoxPic[0] = QPixmap(GetFileDir("Pic\\chat0.png")); //top
chatBoxPic[1] = QPixmap(GetFileDir("Pic\\chat1.png"));
chatBoxPic[2] = QPixmap(GetFileDir("Pic\\chat2.png"));
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(timerUpDate()));
timer->start(1000);//1s
boxLife = 0;
lines = 0;
cancover = true;
this->hide();
this->setMinimumWidth(219);
this->setMaximumWidth(219);
}
int ChatBox::GetStrWidth(const string& str){
return this->fontMetrics().width(QString().fromStdString(str));
}
void ChatBox::Say(string &text, int time){
//简单显示
if (time == 0){
if (boxLife > 0 && !cancover)return;
boxText = text;
boxLife = 3;
cancover = true;
UpdateChatBoxDis();
this->update();
}else{
//复杂显示,加入消息队列
const int maxLen = 5;
if (!msgQueue.empty() && msgQueue.back().msg == text){
return; // 去重
}
while(msgQueue.size() >= maxLen){
msgQueue.pop();
}
msgQueue.push(ChatMsg(text,time));
}
}
void ChatBox::UpdateChatBoxDis(){
lines = 0;
bool nextline = true;
//vector<string> strList;
strList.clear();
/*
for(size_t i = 0;i < cstrList.size();++i){
delete [] cstrList[i];
}
*/
//static string punc = " !@#$%^&*()-_+={}[]|:;'<>?,./\"";
size_t slen = boxText.size();
//a chinese equal two english
for(size_t i = 0;i < slen;){
if(boxText[i] == '\n'){
nextline = true;
i ++;
continue;
}
if(nextline){
nextline = false;
lines ++;
strList.push_back("");
}
bool zh = boxText[i] < 0;
strList[lines - 1] += boxText[i++];
if(zh){
//UTF - 8 可变长字符
while((boxText[i]&0xC0) == 0x80)
strList[lines - 1] += boxText[i++];
}
if(GetStrWidth(strList[lines - 1]) >= widthPerLine){
nextline = true;
}
}
//cstrList.clear();
/*
for(size_t i = 0;i < strList.size();++i){
const char *cs = strList[i].c_str();
size_t cl = strList[i].size();//注意,strlen("ab") = 2,还要加上\0
char *newstr = new char[cl + 1];
memcpy(newstr,cs,cl);
newstr[cl] = '\0';
cstrList.push_back(newstr);
}
*/
boxH = 13 + font_size * lines - (-4)+31;//(lines - 1) * font_size + 70;//(lines - 1) * font_size;
this->setMinimumHeight(boxH);
this->setMaximumHeight(boxH);
}
void ChatBox::timerUpDate(){
if(boxLife <= 0){
boxLife = 0;
this->hide();
//update();
}else{
boxLife --;
}
UpdateChatBox();
}
void ChatBox::UpdateChatBox(){
if (cancover || boxLife <= 0){
if (!msgQueue.empty()){
const ChatMsg &cm = msgQueue.front();
boxText = cm.msg;
boxLife = max(cm.life,10);
cancover = false;
msgQueue.pop();
UpdateChatBoxDis();
Update();
}
}
}
void ChatBox::Update(){
if(boxLife > 0){
this->show();
this->update();//show后才会执行paintEvent()
}
}
void ChatBox::paintEvent(QPaintEvent *){
if (boxLife > 0){
QRect pg = this->parentWidget()->geometry();
this->move(pg.x()-20,pg.y() - boxH);
QPainter painter;
painter.begin(this);
//这里要进行优化,只在设定信息时更新行距
//17,13,31
painter.setPen(Qt::black);
painter.drawPixmap(0,0, 219, 17, chatBoxPic[0]);
painter.drawPixmap(0, 17 + font_size * lines , 219, 31, chatBoxPic[2]);
for(int i=0;i < lines;i++){
painter.drawPixmap(0, 17 + font_size * i , 219, font_size, chatBoxPic[1]);
painter.drawText(16, 12 + font_size * i, 200, font_size, Qt::AlignBottom, strList[i].c_str());
}
painter.end();
}
}
ChatBox::~ChatBox(){
delete ui;
}