374 lines
12 KiB
C++
374 lines
12 KiB
C++
#include "mdichild.h"
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#include "highlighter.h"
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#include <QWheelEvent>
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#include <QTextStream>
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#include <QApplication>
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#include <QScrollBar>
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#include <QMessageBox>
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#include <QFileInfo>
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#include <QDebug>
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#include <QTextCodec>
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#include <QProcess>
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#include <QPainter>
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#include <QTextDocumentFragment>
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MdiChild::MdiChild(QWidget *parent) :
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QPlainTextEdit(parent),
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settings(QCoreApplication::organizationName(), QCoreApplication::applicationName())
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{
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setViewportMargins(50, 0, 0, 0);
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QString sfont = settings.value("Font").toString();
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if (sfont == "") {
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font = qApp->font();
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} else {
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QStringList SLFont = sfont.split(",");
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font = QFont(SLFont.at(0),SLFont.at(1).toInt(),SLFont.at(2).toInt(),SLFont.at(3).toInt());
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}
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((QTextEdit*)(this))->setCurrentFont(font);
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QFontMetrics FM(font);
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int ts = 4;
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setTabStopWidth(ts * FM.boundingRect("*").width());
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connect(document(), SIGNAL(contentsChanged()), this, SLOT(contentsChange()));
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lineNumberArea = new LineNumberArea(this);
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connect(this, SIGNAL(updateRequest(QRect,int)), this, SLOT(updateLineNumberArea(QRect,int)));
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connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(updateLineNumberAreaWidth(int)));
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}
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bool MdiChild::loadFile(QString filename)
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{
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path = filename;
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setWindowTitle(QFileInfo(filename).fileName() + "[*]");
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// 检测编码
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QProcess *process = new QProcess;
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process->start("file --mime-encoding " + filename);
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process->waitForFinished();
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QString PO = process->readAllStandardOutput();
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scodec = PO.mid(PO.indexOf(": ") + 2).replace("\n","").toUpper();
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//qDebug() << scodec;
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QFile *file = new QFile;
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file->setFileName(filename);
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bool ok = file->open(QIODevice::ReadOnly);
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if(ok){
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QPalette plt = palette();
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plt.setColor(QPalette::Text,QColor(Qt::white));
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plt.setBrush(QPalette::Base,QBrush(Qt::black));
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setPalette(plt);
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QTextStream TS(file);
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// 还是乱码
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QTextCodec *codec = QTextCodec::codecForName(scodec.toLatin1());
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TS.setCodec(codec);
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QString s = TS.readAll();
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file->close();
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delete file;
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setPlainText(s);
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Highlighter *highlighter = new Highlighter(document());
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Q_UNUSED(highlighter);
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showMaximized();
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zoomIn(4);
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return true;
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}else{
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QMessageBox::warning(this,"错误", QString(" %1:\n%2").arg(path).arg(file->errorString()));
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return false;
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}
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}
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bool MdiChild::save()
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{
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QFile file(path);
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if (file.open(QFile::WriteOnly)) {
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QTextStream ts(&file);
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QString s = toPlainText();
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ts << s;
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//ui->mdiArea->currentSubWindow()->setWindowTitle(QFileInfo(filename).fileName());
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//LS1->setText("保存 "+filename);
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setWindowTitle(QFileInfo(path).fileName() + "[*]");
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setWindowModified(false);
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return true;
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} else {
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QMessageBox::warning(this,"错误", QString(" %1:\n%2").arg(path).arg(file.errorString()));
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return false;
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}
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}
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void MdiChild::contentsChange()
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{
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setWindowModified(document()->isModified());
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}
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void MdiChild::wheelEvent(QWheelEvent *e)
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{
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if(QApplication::keyboardModifiers() == Qt::ControlModifier){
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QTextCursor cursor = textCursor();
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selectAll();
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font = ((QTextEdit*)(this))->currentFont();
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qDebug() << ((QTextEdit*)(this))->fontPointSize();
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if (e->delta() > 0) {
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((QTextEdit*)(this))->setFontPointSize(((QTextEdit*)(this))->fontPointSize() + 1);
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} else {
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if(((QTextEdit*)(this))->fontPointSize() > 1)
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((QTextEdit*)(this))->setFontPointSize(((QTextEdit*)(this))->fontPointSize() - 1);
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}
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setTextCursor(cursor);
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lineNumberArea->update();
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} else {
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QPlainTextEdit::wheelEvent(e);
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}
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}
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void MdiChild::keyPressEvent(QKeyEvent *e)
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{
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// 自动补全
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if (e->key() == Qt::Key_ParenLeft) {
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insertPlainText("()");
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moveCursor(QTextCursor::Left, QTextCursor::MoveAnchor);
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} else if (e->key() == Qt::Key_BraceLeft) {
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insertPlainText("{}");
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moveCursor(QTextCursor::Left, QTextCursor::MoveAnchor);
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} else if (e->key() == Qt::Key_BracketLeft) {
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insertPlainText("[]");
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moveCursor(QTextCursor::Left, QTextCursor::MoveAnchor);
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} else if ((e->modifiers() & Qt::ControlModifier) && e->key() == Qt::Key_Slash) {// Ctrl+/ 注释选中行
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QString s = textCursor().selection().toPlainText();
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QStringList SL = s.split("\n");
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for (int i=0; i<SL.length(); i++) {
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if (SL.at(i).trimmed().startsWith("//")) {
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s = SL.at(i);
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s.replace("//","");
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} else {
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s = "//" + SL.at(i);
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}
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if (i<SL.length()-1) s.append("\n");
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textCursor().insertText(s);
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}
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} else if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return) {//auto indent
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QString s = textCursor().block().text(); //当前行字符串
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QString st = s.trimmed(); //去首尾空格后的字符串
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QString ws = s.mid(0, s.indexOf(st)); //字符串前面的空白
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qDebug() << ws;
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if(st.endsWith("{")){
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textCursor().insertText("\n\t" + ws); //插入换行 + tab + 行首空白字符(缩进)
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}else{
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textCursor().insertText("\n" + ws); //插入换行 + 行首空白字符(不缩进)
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}
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} else if (e->key() == Qt::Key_Tab) { //选中每行前插入一个tab
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QString s = textCursor().selection().toPlainText();
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QStringList SL = s.split("\n");
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s = "";
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for (int i=0; i<SL.length(); i++) {
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QString st = "\t" + SL.at(i);
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if (i<SL.length()-1) st.append("\n");
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s += st;
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}
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textCursor().insertText(s);
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} else {
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return QPlainTextEdit::keyPressEvent(e);
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}
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}
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// 生成行号
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void MdiChild::lineNumberAreaPaintEvent(QPaintEvent *event)
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{
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QPainter painter(lineNumberArea);
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painter.fillRect(event->rect(), QBrush(QColor(33,33,33)));
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QTextBlock block = firstVisibleBlock();
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int blockNumber = block.blockNumber();
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int top = (int) blockBoundingGeometry(block).translated(contentOffset()).top();
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int bottom = top + (int) blockBoundingRect(block).height();
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while (block.isValid() && top <= event->rect().bottom()) {
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if (block.isVisible() && bottom >= event->rect().top()) {
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QString number = QString::number(blockNumber + 1);
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painter.setPen(Qt::white);
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painter.setFont(font);
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QFontMetrics FM(font);
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//painter.drawText(0, top, lineNumberArea->width(), fontMetrics().height(), Qt::AlignRight, number);
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painter.drawText(0, top, lineNumberArea->width(), FM.boundingRect(number).height(), Qt::AlignRight, number);
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}
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block = block.next();
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top = bottom;
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bottom = top + (int) blockBoundingRect(block).height();
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++blockNumber;
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}
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}
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int MdiChild::lineNumberAreaWidth()
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{
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int digits = 1;
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int max = qMax(1, blockCount());
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while (max >= 10) {
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max /= 10;
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++digits;
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}
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//int space = 3 + fontMetrics().horizontalAdvance(QLatin1Char('9')) * digits;
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QFontMetrics FM(font);
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int space = 5 + FM.width(QLatin1Char('9')) * digits;
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return space;
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}
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void MdiChild::resizeEvent(QResizeEvent *e)
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{
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QPlainTextEdit::resizeEvent(e);
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QRect cr = contentsRect();
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lineNumberArea->setGeometry(QRect(cr.left(), cr.top(), lineNumberAreaWidth(), cr.height()));
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}
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void MdiChild::updateLineNumberArea(const QRect &rect, int dy)
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{
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if (dy)
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lineNumberArea->scroll(0, dy);
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else
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lineNumberArea->update(0, rect.y(), lineNumberArea->width(), rect.height());
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if (rect.contains(viewport()->rect()))
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updateLineNumberAreaWidth(0);
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}
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void MdiChild::updateLineNumberAreaWidth(int /* newBlockCount */)
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{
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setViewportMargins(lineNumberAreaWidth(), 0, 0, 0);
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}
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void MdiChild::setReadOnlyA(bool b)
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{
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setReadOnly(b);
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}
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void MdiChild::insertBR()
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{
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textCursor().insertText("<br>");
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}
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void MdiChild::insertH(QString h)
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{
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QString s = textCursor().selection().toPlainText(); //可以显示换行符
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QStringList SL = s.split("\n");
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s = "";
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for (int i=0; i<SL.length(); i++) {
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if (SL.at(i) != "") {
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s += "<" + h +">" + SL.at(i) + "</" + h + ">";
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if (i < SL.length()-1)
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s += "\n";
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}
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}
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textCursor().insertText(s);
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}
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void MdiChild::insertTR()
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{
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QString s = textCursor().selection().toPlainText();
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QStringList SL = s.split("\n");
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s = "";
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for (int i=0; i<SL.length(); i++) {
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if (SL.at(i) != "") {
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s += "<tr>" + SL.at(i) + "</tr>";
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if (i < SL.length()-1)
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s += "\n";
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}
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}
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textCursor().insertText(s);
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}
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void MdiChild::insertTD()
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{
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QString s = textCursor().selection().toPlainText();
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QStringList SL = s.split("\n");
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s = "";
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for (int i=0; i<SL.length(); i++) {
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if (SL.at(i) != "") {
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s += "<td>" + SL.at(i) + "</td>";
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if (i < SL.length()-1)
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s += "\n";
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}
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}
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textCursor().insertText(s);
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}
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void MdiChild::insertP()
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{
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QString s = textCursor().selection().toPlainText();
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s = s.replace("<br>", "\n");
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QStringList SL = s.split("\n");
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s = "";
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for (int i=0; i<SL.length(); i++) {
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if (SL.at(i) != "") {
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s += "<p>" + SL.at(i) + "</p>";
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if (i < SL.length()-1)
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s += "\n";
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}
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}
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textCursor().insertText(s);
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}
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void MdiChild::insertDIV(QString se)
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{
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QString s = textCursor().selection().toPlainText();
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QStringList SL = s.split("\n");
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s = "";
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for (int i=0; i<SL.length(); i++) {
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if (SL.at(i) != "") {
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s += "<div" + se + ">" + SL.at(i) + "</div>";
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if (i < SL.length()-1)
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s += "\n";
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}
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}
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textCursor().insertText(s);
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}
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void MdiChild::insertA(QString se)
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{
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QString s = textCursor().selection().toPlainText();
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if(s.contains("<a>") || s.contains("</a>")){
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//正则去链接
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s.replace(QRegularExpression("<a(.*?)>(.*)</a>"), "\\2");
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textCursor().insertText(s);
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} else {
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QStringList SL = s.split("\n");
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s = "";
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for (int i=0; i<SL.length(); i++) {
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if (SL.at(i) != "") {
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s += "<a " + se + ">" + SL.at(i) + "</a>";
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if (i < SL.length()-1)
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s += "\n";
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}
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}
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textCursor().insertText(s);
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}
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}
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void MdiChild::insertImg(QString se)
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{
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QString s = textCursor().selection().toPlainText();
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if (s.contains("<img")) {
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//正则去img除src以外属性
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s.replace(QRegularExpression(".*<img(.*)src=([^\\s]+).*>"), "<img src=\\2>");
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textCursor().insertText(s);
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} else {
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s = "<img src=\"" + se + "\">";
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textCursor().insertText(s);
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}
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}
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void MdiChild::deleteTag()
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{
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QString s = textCursor().selection().toPlainText();
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//s.replace(QRegularExpression("[\\s\\S]*<.*?>([\\s\\S]*)<.*?>[\\s\\S]*"), "\\1");
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//https://zhidao.baidu.com/question/459106626.html
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s = s.replace(QRegularExpression("<[^>]*?>(.*?)"), "\\1"); //删除左部
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s = s.replace(QRegularExpression("(.*?)<\\/[^>]*?>"), "\\1"); //删除右部
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textCursor().insertText(s);
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}
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void MdiChild::deleteBR()
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{
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QString s = textCursor().selection().toPlainText();
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s = s.replace("\n", "");
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//s = s.replace(" ", ""); //尖括号里面也去除了，不行
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//s = s.replace(">\\s+<", "><"); //无效
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s = s.simplified(); //去首尾空格，中间多个空格替换为一个空格
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textCursor().insertText(s);
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} |