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logdialog.cpp
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logdialog.cpp
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#include "logdialog.h"
#include <QTextBlock>
#include <QDebug>
#include <QScrollBar>
#include "ui_logdialog.h"
//int counter=0;
LogDialog::LogDialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::LogWindow) {
ui->setupUi(this);
setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
ui->logEdit->setLineWrapMode(QPlainTextEdit::NoWrap);
ui->logEdit->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
ui->logEdit->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
cursor = new QTextCursor(ui->logEdit->document());
connect(ui->closeButton, &QPushButton::pressed, this, [this]() {
//qDebug()<<"hello world "<<counter;
//counter++;
close();
});
}
LogDialog::~LogDialog() {
delete ui;
}
void LogDialog::initLogs(QList<QString>&logLines) {
foreach(const QString&line, logLines) {
addLog(line);
}
ui->logEdit->horizontalScrollBar()->setValue(0);
}
void LogDialog::addLog(QString string) {
bool atEnd=ui->logEdit->textCursor().atEnd();
if(ui->logEdit->document()->isEmpty()) {
ui->logEdit->insertPlainText(string);
} else {
cursor->insertBlock();
cursor->insertText(string);
}
if(ui->logEdit->document()->lineCount()>maxLines) {
cursor->movePosition(QTextCursor::Start);
cursor->select(QTextCursor::BlockUnderCursor);
cursor->removeSelectedText();
cursor->deleteChar();
cursor->movePosition(QTextCursor::End);
}
if(atEnd) {
ui->logEdit->textCursor().movePosition(QTextCursor::End);
ui->logEdit->ensureCursorVisible();
}
}