这次是结合上次的色板，实现一个简单的txt文档编辑

#ifndef FORM_H #define FORM_H #include <QWidget> #include <mainwindow.h> namespace Ui { class Form; } class Form : public QWidget { Q_OBJECT public: explicit Form(QWidget *parent = nullptr); ~Form(); public slots: void color_from(); private slots: void on_open_file_Btn_clicked(); void on_save_file_Btn_clicked(); void on_set_font_Btn_clicked(); void on_backcolor_Btn_clicked(); private: Ui::Form *ui; MainWindow_color *w; }; #endif // FORM_H 在这里插入代码片 #ifndef MainWindow_color_H #define MainWindow_color_H #include <QMainWindow> #include <QPushButton> #include "QDebug" QT_BEGIN_NAMESPACE namespace Ui { class MainWindow_color; } QT_END_NAMESPACE class MainWindow_color : public QMainWindow { Q_OBJECT public: MainWindow_color(QWidget *parent = nullptr); ~MainWindow_color(); signals: void color_enter(); private: Ui::MainWindow_color *ui; QPushButton *btn[10]; int curBtn; int beforeBtn; public slots: void readSlide(); void setSlide(); void cBtn1Click(); void cBtn2Click(); void cBtn3Click(); void cBtn4Click(); void cBtn5Click(); void cBtn6Click(); void cBtn7Click(); void cBtn8Click(); void cBtn9Click(); void cBtn10Click(); void cBtnChanged(int i); void changeCur(); signals: void cBtn1Clicked(int value); void cBtn2Clicked(int value); void cBtn3Clicked(int value); void cBtn4Clicked(int value); void cBtn5Clicked(int value); void cBtn6Clicked(int value); void cBtn7Clicked(int value); void cBtn8Clicked(int value); void cBtn9Clicked(int value); void cBtn10Clicked(int value); private slots: void on_enter_BTN_clicked(); }; #endif // MainWindow_color_H 在这里插入代码片 #include "form.h" #include "ui_form.h" #include <QGridLayout> #include <QDialog> #include <QFontDialog> #include <QDebug> #include <QColorDialog> #include <QFileDialog> Form::Form(QWidget *parent) : QWidget(parent), ui(new Ui::Form) { ui->setupUi(this); //自定义色板 w = new MainWindow_color(this); //连接色板的信号和自己的槽 connect(w,&MainWindow_color::color_enter,this,&Form::color_from); QGridLayout *grid = new QGridLayout(this); grid->addWidget(ui->text_Browser); grid->addWidget(ui->backcolor_Btn); grid->addWidget(ui->open_file_Btn); grid->addWidget(ui->save_file_Btn); grid->addWidget(ui->set_font_Btn); this->move(300,0); this->setWindowTitle("文本编辑器"); this->setWindowIcon(QIcon(":/new/prefix1/txt.png")); //读取存储的颜色并设置 QFile file("F:/qtprojectc++/qtworkspace/work_7_3/color_save.txt"); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; QByteArray allline = file.readAll(); //allline.remove(0,1); int ret = allline.indexOf(";",5); allline.remove(ret+1,1); QString color ="\""; color +=allline; color +="\""; qDebug() <<allline <<" ALLLINE "; ui->text_Browser->setStyleSheet(allline); //读取存储的字体格式并设置 QFile file_font("F:/qtprojectc++/qtworkspace/work_7_3/font_save.txt"); if (!file_font.open(QIODevice::ReadOnly | QIODevice::Text)) return; QByteArray allline_font = file_font.readAll(); QFont font = QFont(allline_font); font.fromString(allline_font); ui->text_Browser->setFont(font); } Form::~Form() { delete ui; } void Form::color_from() { qDebug() << "color_from"; QFile file("F:/qtprojectc++/qtworkspace/work_7_3/color_save.txt"); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; QByteArray allline = file.readAll(); //allline.remove(0,1); int ret = allline.indexOf(";",5); allline.remove(ret+1,1); QString color ="\""; color +=allline; color +="\""; qDebug() <<allline <<" ALLLINE "; ui->text_Browser->setStyleSheet(allline); file.close(); } void Form::on_open_file_Btn_clicked() { QString fileName = QFileDialog::getOpenFileName(this); QFile file(fileName); qDebug() <<fileName <<"filename" ; if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; // while (!file.atEnd()) { QByteArray allline = file.readAll(); ui->text_Browser->setPlainText(allline); // } file.close(); } void Form::on_save_file_Btn_clicked() { QString fileName = QFileDialog::getSaveFileName(this); QFile file(fileName); if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) return; QString data = ui->text_Browser->toPlainText(); file.write(data.toUtf8()); file.close(); } void Form::on_set_font_Btn_clicked() { // QFontDialog *font = new QFontDialog(this); bool ok; QFont font = QFontDialog::getFont(&ok, QFont(),this,"字体设置"); if (ok) { ui->text_Browser->setFont(font); qDebug() << font << "ok" <<ok; QFile file("F:/qtprojectc++/qtworkspace/work_7_3/font_save.txt"); if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) return; file.resize(0); file.write(font.toString().toUtf8()); file.close(); } else { qDebug() <<ok; } } void Form::on_backcolor_Btn_clicked() { this->hide(); w->show(); // QColor color = QColorDialog::getColor(Qt::white, this,"背景颜色设置"); // int red = color.red(); // int green = color.green(); // int blue = color.blue(); // ui->text_Browser->setStyleSheet(QString("background-color:rgb(%1,%2,%3" // ");").arg(red).arg(green).arg(blue)); // QFile file("F:/qtprojectc++/qtworkspace/work_7_3/color_save.txt"); // if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) // return; // QString data = QString("background-color:rgb(%1,%2,%3" // ");").arg(red).arg(green).arg(blue); // file.resize(0); // file.write(data.toUtf8()); // file.close(); } 在这里插入代码片 #include "mainwindow.h" #include "ui_mainwindow.h" #include <string> #include <QFile> /**** ****/ MainWindow_color::MainWindow_color(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow_color) { curBtn =0; ui->setupUi(this); btn[0]=ui->cBtn_1; ui->cBtn_1->setChecked(true); //默认第一个选中 qDebug() << "-----++++0------" <<btn[0]->isChecked() ; btn[1]=ui->cBtn_2; btn[2]=ui->cBtn_3; btn[3]=ui->cBtn_4; btn[4]=ui->cBtn_5; btn[5]=ui->cBtn_6; btn[6]=ui->cBtn_7; btn[7]=ui->cBtn_8; btn[8]=ui->cBtn_9; btn[9]=ui->cBtn_10; connect(ui->redHorSlider,&QAbstractSlider::sliderMoved,this,&MainWindow_color::readSlide); connect(ui->greenHorSlider,&QAbstractSlider::sliderMoved,this,&MainWindow_color::readSlide); connect(ui->blueHorSlider,&QAbstractSlider::sliderMoved,this,&MainWindow_color::readSlide); connect(ui->redLdt,&QLineEdit::textEdited,this,&MainWindow_color::setSlide); connect(ui->greenLdt,&QLineEdit::textEdited,this,&MainWindow_color::setSlide); connect(ui->blueLdt,&QLineEdit::textEdited,this,&MainWindow_color::setSlide); /*按键信号与槽*/ connect(ui->cBtn_1,&QPushButton::clicked,this,&MainWindow_color::cBtn1Click); connect(ui->cBtn_2,&QPushButton::clicked,this,&MainWindow_color::cBtn2Click); connect(ui->cBtn_3,&QPushButton::clicked,this,&MainWindow_color::cBtn3Click); connect(ui->cBtn_4,&QPushButton::clicked,this,&MainWindow_color::cBtn4Click); connect(ui->cBtn_5,&QPushButton::clicked,this,&MainWindow_color::cBtn5Click); connect(ui->cBtn_6,&QPushButton::clicked,this,&MainWindow_color::cBtn6Click); connect(ui->cBtn_7,&QPushButton::clicked,this,&MainWindow_color::cBtn7Click); connect(ui->cBtn_8,&QPushButton::clicked,this,&MainWindow_color::cBtn8Click); connect(ui->cBtn_9,&QPushButton::clicked,this,&MainWindow_color::cBtn9Click); connect(ui->cBtn_10,&QPushButton::clicked,this,&MainWindow_color::cBtn10Click); connect(this,&MainWindow_color::cBtn1Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn2Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn3Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn4Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn5Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn6Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn7Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn8Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn9Clicked,this,&MainWindow_color::cBtnChanged); connect(this,&MainWindow_color::cBtn10Clicked,this,&MainWindow_color::cBtnChanged); connect(ui->changeBtn,&QPushButton::clicked,this,&MainWindow_color::changeCur); } MainWindow_color::~MainWindow_color() { delete ui; } void MainWindow_color::readSlide() { int red=ui->redHorSlider->value(); int green=ui->greenHorSlider->value(); int blue=ui->blueHorSlider->value(); ui->redLdt->setText(QString::number(red)); ui->greenLdt->setText(QString::number(green)); ui->blueLdt->setText(QString::number(blue)); QString color=QString("background-color:rgb(%1,%2,%3);").arg(red).arg(green).arg(blue); ui->colorLab->setStyleSheet(color); } void MainWindow_color::setSlide() { int red=ui->redLdt->text().toInt(); int green=ui->greenLdt->text().toInt(); int blue=ui->blueLdt->text().toInt(); ui->redHorSlider->setSliderPosition(red); ui->greenHorSlider->setSliderPosition(green); ui->blueHorSlider->setSliderPosition(blue); QString color=QString("background-color:rgb(%1,%2,%3);").arg(red).arg(green).arg(blue); ui->colorLab->setStyleSheet(color); } void MainWindow_color::cBtn1Click() { //qDebug() << "+++++++++++++" ; emit cBtn1Clicked(0); } void MainWindow_color::cBtn2Click() { emit cBtn2Clicked(1); } void MainWindow_color::cBtn3Click() { emit cBtn3Clicked(2); } void MainWindow_color::cBtn4Click() { emit cBtn4Clicked(3); } void MainWindow_color::cBtn5Click() { emit cBtn5Clicked(4); } void MainWindow_color::cBtn6Click() { emit cBtn6Clicked(5); } void MainWindow_color::cBtn7Click() { emit cBtn7Clicked(6); } void MainWindow_color::cBtn8Click() { emit cBtn8Clicked(7); } void MainWindow_color::cBtn9Click() { emit cBtn9Clicked(8); } void MainWindow_color::cBtn10Click() { emit cBtn10Clicked(9); } void MainWindow_color::cBtnChanged(int i) { qDebug() << "------------" ; // btn[curBtn]->setChecked(false); qDebug() << "-----++++------" <<btn[i]->isChecked() ; //有阴影是true if( curBtn == i &&btn[i]->isChecked() == true) { //beforeBtn = curBtn; //btn[curBtn]->setChecked(false); curBtn = i; } else { //若选中不是同一个，之前的阴影消失 btn[curBtn]->setChecked(false); curBtn = i; btn[i]->setChecked(true); } // qDebug() << "-----++++------" << btn[curBtn]->isChecked() ; btn[curBtn]->setChecked(true); //qDebug() << "-----++++---++--" << btn[curBtn]->isChecked(); std::string oriColor,oriRed,oriGreen,oriBlue; oriColor=btn[i]->styleSheet().toStdString(); qDebug() << btn[i]->styleSheet(); /*提取原来存放的RGB只*/ unsigned int num=0,a=0,c=0; unsigned int b[2]; int j=0; for(;num<oriColor.size();num++) { if(oriColor[num]=='(') a=num; if(oriColor[num]==',') { b[j]=num; qDebug() << " j=" << j << endl; j++; } if(oriColor[num]==')') { c=num; } } for(unsigned int x=0;(a+1)<=b[0];a++,x++) { oriRed[x]=oriColor[a+1]; } for(unsigned int x=0;(b[0]+1)<=b[1];b[0]++,x++) { oriGreen[x]=oriColor[b[0]+1]; } for(unsigned int x=0;(b[1]+1)<=c;b[1]++,x++) { oriBlue[x]=oriColor[b[1]+1]; } /* string to int */ int R=stoi(oriRed); int G=stoi(oriGreen); int B=stoi(oriBlue); // if(R==255&&G==255&&B==255) // { // int red=ui->redLdt->text().toInt(); // int green=ui->greenLdt->text().toInt(); // int blue=ui->blueLdt->text().toInt(); // QString color=QString("background-color:rgb(%1,%2,%3);").arg(red).arg(green).arg(blue); // btn[i]->setStyleSheet(color); // } // else { ui->colorLab->setStyleSheet(QString::fromStdString(oriColor)); ui->redHorSlider->setSliderPosition(R); ui->greenHorSlider->setSliderPosition(G); ui->blueHorSlider->setSliderPosition(B); ui->redLdt->setText(QString::number(R)); ui->greenLdt->setText(QString::number(G)); ui->blueLdt->setText(QString::number(B)); // } } void MainWindow_color::changeCur() { QString color; color=ui->colorLab->styleSheet(); btn[curBtn]->setStyleSheet(color); btn[curBtn]->setChecked(false); //按下确定后，阴影消失，自动curBtn++ if(++curBtn ==10) { curBtn = 0; btn[curBtn]->setChecked(true); } else { btn[curBtn]->setChecked(true); } } void MainWindow_color::on_enter_BTN_clicked() { QString color = ui->colorLab->styleSheet(); QFile file("F:/qtprojectc++/qtworkspace/work_7_3/color_save.txt"); if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) return; file.resize(0); file.write(color.toUtf8()); file.close(); this->parentWidget()->show(); emit color_enter(); this->hide(); } 在这里插入代码片 #include "form.h" #include <QApplication> int main(int argc, char *argv[]) { QApplication a(argc, argv); Form w; w.show(); return a.exec(); } 在这里插入代码片 `` ` 效果图：会默认加载上次的字体和颜色