QTextEdit实现富文本记事本
用Qt实现一个多功能记事本,
功能 :布局对齐,字体变换,颜色改变.
格式 :自动保存为rtf格式,支持txt格式,兼容MS Word打开.
涉及知识 :文件保存过滤器的使用,文件的输入输出流,光标的控制
可能会有一些小Bug
效果图如下:
/*---------------MyNotepad.h--------------------*/
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include /*---------------MyNotepad.cpp--------------------*/
#include "mainwindow.h"
#include toHtml().toUtf8();
if("纯文本(*.txt)" == filterMod)
{
QMessageBox::StandardButton button =
QMessageBox::warning(this, tr("提示"),
QString(tr("保存为纯文本格式，颜色、字体等属性会丢失。\n确定要这样做么?")),
QMessageBox::Yes|QMessageBox::No,QMessageBox::No);
if(button == QMessageBox::Yes)
{
stream<toPlainText().toUtf8();
}
else
{
;
}
}
}
file.close();
}
void MainWindow::closeEvent(QCloseEvent *event)
{
QMessageBox::StandardButton button =
QMessageBox::question(this, tr("退出程序"),QString(tr("是否退出")),
QMessageBox::Yes|QMessageBox::No,QMessageBox::No);
if(button == QMessageBox::Yes)
{
event->accept();
}
else
{
event->ignore();
}
}
void MainWindow::copyword()
{
textEdit->copy();
}
void MainWindow::cutword()
{
textEdit->cut();
}
void MainWindow::pasteword()
{
textEdit->paste();
}
void MainWindow::selslot()
{
textEdit->selectAll();
}
void MainWindow::colslot()
{
const QColorDialog::ColorDialogOptions options = QFlag(QColorDialog::ShowAlphaChannel);
const QColor color = QColorDialog::getColor(Qt::green, this, tr("选择颜色"), options);
if (color.isValid())
{
textEdit->setTextColor(color);
}
}
void MainWindow::fontslot()
{
bool ok;
QFont font = QFontDialog::getFont(
&ok, QFont(tr("微软雅黑"), 15), this);
if (ok)
{
//textEdit->setFont(font);
QTextCharFormat fmt;
fmt.setFont(font);
mergeFormat(fmt);
} else
{
;
}
}
void MainWindow::timeslot()
{
textEdit->append(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"));
}
//设置光标的选区，使格式作用于选区内的字符
void MainWindow::mergeFormat(QTextCharFormat fmt)
{
QTextCursor cursor = textEdit->textCursor();
if (!cursor.hasSelection()) {
cursor.select(QTextCursor::WordUnderCursor);
}
cursor.mergeCharFormat(fmt);
}
//加粗
void MainWindow::boldslot()
{
QTextCharFormat fmt;
fmt.setFontWeight(boldcheck ? QFont::Bold : QFont::Normal);
mergeFormat(fmt);
boldcheck = !boldcheck;
}
//倾斜
void MainWindow::italicslot()
{
QTextCharFormat fmt;
fmt.setFontItalic(Italiccheck ? true : false);
mergeFormat(fmt);
Italiccheck = !Italiccheck;
}
//下划线
void MainWindow::underslot()
{
QTextCharFormat fmt;
fmt.setFontUnderline(UnderLinecheck ? true : false);
mergeFormat(fmt);
UnderLinecheck = !UnderLinecheck;
}
//左对齐
void MainWindow::layoutLeft()
{
if ( textEdit->alignment() != Qt::AlignLeft )
textEdit->setAlignment(Qt::AlignLeft);
else
textEdit->setAlignment( textEdit->alignment() ^ Qt::AlignLeft);
}
//居中对齐
void MainWindow::layoutCenter()
{
if ( textEdit->alignment() != Qt::AlignCenter )
textEdit->setAlignment(Qt::AlignCenter);
else
textEdit->setAlignment( textEdit->alignment() ^ Qt::AlignCenter);
}
void MainWindow::showauthor()
{
QDesktopServices::openUrl(QUrl("http://blog.csdn.net/sinat_29173167"));
}
//右对齐
void MainWindow::layoutRight()
{
if ( textEdit->alignment() != Qt::AlignRight )
textEdit->setAlignment(Qt::AlignRight);
else
textEdit->setAlignment( textEdit->alignment() ^ Qt::AlignRight);
}
void MainWindow::showabout()
{
QDialog *w;
w = new QDialog(this);
w->setWindowTitle(tr("关于 - 萌萌哒o(≧∇≦o)~Editer"));
w->setFixedHeight(200);
w->setFixedWidth(400);
QMovie *gif = new QMovie(":/panda.gif");
lableft = new QLabel(w);
lableft->setMovie(gif);
//lableft->setSizePolicy(QSizePolicy::horizontalPolicy(),QSizePolicy::verticalStretch());
//lableft->resize(gif->width(),gif->height());
gif->start();
labright = new QLabel(w);
QFont ft("Microsoft YaHei", 10);
ft.setBold(25);
labright->setFont(ft);
labright->setText(tr("Plantform: Win/Linux\n\nAll Copyleft Reseverd."));
QHBoxLayout *layout = new QHBoxLayout(w);
layout->setSpacing(25);
layout->setMargin(10);
layout->addWidget(lableft);
layout->addWidget(labright);
w->exec();
delete w;
}
/*---------------MyNotepad.cpp--------------------*/ /*---------------main.cpp--------------------*/
#include "mainwindow.h"
#include