分离出ChatBox

ChatBox.cpp

@@ -0,0 +1,163 @@
+#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
+
+    lines = 0;
+    cancover = true;
+
+    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 && (boxLife <= 0 || cancover)){
+        boxText = text;
+        boxLife = 3;
+        cancover = true;
+        UpdateChatBoxDis();
+        this->update();
+    }else{
+        //复杂显示,加入消息队列
+        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 = cm.life;
+            cancover = false;
+            msgQueue.pop();
+            UpdateChatBoxDis();
+            this->update();
+        }
+    }
+}
+
+void ChatBox::Update(){
+    if(boxLife > 0){
+        this->show();
+        this->update();
+    }
+}
+
+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());
+        }
+    }
+}
+
+ChatBox::~ChatBox(){
+    delete ui;
+}

ChatBox.h

@@ -0,0 +1,51 @@
+#ifndef CHATBOX_H
+#define CHATBOX_H
+
+#include "Defines.h"
+
+struct ChatMsg{
+    int life;
+    string msg;
+    ChatMsg();
+    ChatMsg(string message,int msgLife);
+};
+
+namespace Ui {
+class ChatBox;
+}
+
+class ChatBox : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit ChatBox(QWidget *parent = 0);
+    ~ChatBox();
+public:
+    void Say(string &text,int time);
+    void Update();
+private:
+    void UpdateChatBox();
+    void UpdateChatBoxDis();
+    int GetStrWidth(const string& str);
+    void paintEvent(QPaintEvent *);
+private slots:
+    void timerUpDate();
+private:
+    Ui::ChatBox *ui;
+    QPixmap chatBoxPic[3];
+
+    //聊天窗口
+    int boxLife;
+    string boxText;
+    bool cancover;//可覆盖
+    queue<ChatMsg> msgQueue;//消息队列
+    const int widthPerLine = 172;
+    const int font_size = 28;
+    int boxH;
+    int lines;
+    //vector<char*> cstrList;
+    vector<string> strList;
+};
+
+#endif // CHATBOX_H

ChatBox.ui

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>ChatBox</class>
+ <widget class="QDialog" name="ChatBox">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>219</width>
+    <height>39</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>