commandline.cc

c++的guiQt做的开发

/** @file
 CommandLine - class representing command window (editation of command and output of previous commands)
*/
#include "commandline.h"
#include "settings.h"
#include "util.h"
#include <iostream>
#include <qglobal.h>
#if QT_VERSION >= 0x040200
#include <QCompleter>
#endif
#include <QTextCursor>
#include <QLayout>
#include <QPushButton>
#include <QFile>
#include <QTextEdit>
#include <QLineEdit>
#include <QComboBox>
#include <QSizePolicy>

using namespace std;
using namespace util;

namespace gui {

/**
 constructor of CommandLine, creates window and fills it with elements
 @param parent Parent widget
*/
CommandLine::CommandLine(QWidget *parent/*=0*/):QWidget(parent) {
 QBoxLayout * hl = new QVBoxLayout( this );

 out=new QTextEdit(this);
 cmd=new QLineEdit(this);

 out->setReadOnly(true);
 // init history
 history = new QComboBox(this);
 history->setLineEdit(cmd);
 history->setEditable(true);

 // setting sizePolicy for ignoring width hint (some history items are too large)
 QSizePolicy spol ( QSizePolicy::Ignored, QSizePolicy::Preferred );
 history->setSizePolicy( spol );
 history->setMinimumHeight( history->sizeHint().height() );

// history->setInsertionPolicy( QComboBox::AtTop );
 history->setInsertPolicy(QComboBox::NoInsert);
 history->insertItem(0,"");
 history->setCurrentIndex(0);
 history->setAutoCompletion( true );
 QObject::connect(cmd, SIGNAL(returnPressed()), this, SLOT(execute()));
 hl->addWidget(out);
 hl->addWidget(history);
 out->setWordWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
}

/**
 Turn on autocompletion with provided words
 @param words command list used for auto completion
*/
void CommandLine::setAutoCompleter(const QStringList &words) {
#if QT_VERSION >= 0x040200
 QCompleter *completer = new QCompleter(words,this);
 completer->setCaseSensitivity(Qt::CaseInsensitive);
 cmd->setCompleter(completer);
#endif
}

/**
 Erase all text in the window
*/
void CommandLine::clearWindow() {
 out->setHtml("");
}

/**
 Execute and clear current command
 */
void CommandLine::execute() {
 QString command=cmd->text();
 history->insertItem(1,command);
 history->setCurrentIndex(0);
 history->setItemText(0,"");
 emit commandExecuted(command);		//execute command via signal
}

/**
 move cursor to the end of output window
*/
void CommandLine::moveCursorToEnd() {
 QTextCursor c=out->textCursor();
 c.movePosition(QTextCursor::End);
 out->setTextCursor(c);
}

/**
 Add command executed from menu or any source to be echoed to command window
 @param command Command to add
*/
void CommandLine::addCommand(const QString &command) {
 moveCursorToEnd();
 out->insertHtml("<b>&gt; </b>"+htmlEnt(command)+"<br>");
 moveCursorToEnd();
 consoleLog("> "+command,globalSettings->readExpand("path/console_log"));
}

/**
 Add string to be echoed to command window
 @param str String to add
*/
void CommandLine::addString(const QString &str) {
 moveCursorToEnd();
 out->insertHtml(htmlEnt(str)+"<br>");
 moveCursorToEnd();
 consoleLog(str,globalSettings->readExpand("path/console_log"));
}

/**
 Add string in HTML format to be echoed to command window
 @param str String to add
*/
void CommandLine::addStringHtml(const QString &str) {
 moveCursorToEnd();
 out->insertHtml(str+"<br>");
 moveCursorToEnd();
 consoleLog(str,globalSettings->readExpand("path/console_log"));
}

/**
 Add error message to be echoed to command window
 @param message Error message to add
*/
void CommandLine::addError(const QString &message) {
 moveCursorToEnd();
 out->insertHtml("<font color=red>! </font>"+htmlEnt(message)+"<br>");
 moveCursorToEnd();
 consoleLog("! "+message,globalSettings->readExpand("path/console_log"));
}

/** default destructor */
CommandLine::~CommandLine() {
}

} // namespace gui