greeters/qt/lightdm-example-qt-greeter.cpp

   1 #include "lightdm-example-qt-greeter.h"
   2
   3 #include <QtGui/QApplication>
   4 #include <QtGui/QLabel>
   5 #include <QtGui/QLineEdit>
   6 #include <QtGui/QPushButton>
   7 #include <QtGui/QGridLayout>
   8
   9 #include "ldmgreeter.h"
  10
  11 LoginDialog::LoginDialog() : QDialog()
  12 {
  13     label = new QLabel("Username:", this);
  14     entry = new QLineEdit(this);
  15     connect(entry, SIGNAL(returnPressed()), this, SLOT(onLogin()));
  16
  17     QPushButton *button = new QPushButton("Login", this);
  18     connect(button, SIGNAL(clicked()), this, SLOT(onLogin()));
  19
  20     QGridLayout *layout = new QGridLayout(this);
  21     layout->addWidget(label, 0, 0, 1, 1);
  22     layout->addWidget(entry, 1, 0, 2, 1);
  23     layout->addWidget(button, 2, 0, 3, 1);
  24     setLayout(layout);
  25
  26     greeter = new LdmGreeter; //FIXME this LEAKS! Either finish the QWidget subclass plan, or add parent arg to LdmGreeter.
  27     connect(greeter, SIGNAL(showPrompt(QString)), this, SLOT(showPrompt(QString)));
  28     connect(greeter, SIGNAL(showMessage(QString)), this, SLOT(showMessage(QString)));
  29     connect(greeter, SIGNAL(showError(QString)), this, SLOT(showError(QString)));
  30     connect(greeter, SIGNAL(authenticationComplete()), this, SLOT(authenticationComplete()));
  31     connect(greeter, SIGNAL(quit()), this, SLOT(quit()));
  32     greeter->connectToServer();
  33 }
  34
  35 void LoginDialog::onLogin()
  36 {
  37     if(greeter->inAuthentication()) {
  38         if(inPrompt) {
  39             greeter->provideSecret(entry->text());
  40         }
  41         inPrompt = false;
  42         entry->setText("");
  43         entry->setEchoMode(QLineEdit::Normal);
  44     }
  45     else {
  46         greeter->startAuthentication(entry->text());
  47     }
  48 }
  49
  50 void LoginDialog::showPrompt(QString text)
  51 {
  52     entry->setText("");
  53     entry->setEchoMode(QLineEdit::Password);
  54     label->setText(text);
  55     inPrompt = true;
  56 }
  57
  58 void LoginDialog::showMessage(QString text)
  59 {
  60     label->setText(text);
  61 }
  62
  63 void LoginDialog::showError(QString text)
  64 {
  65      label->setText(text);
  66 }
  67
  68 void LoginDialog::authenticationComplete()
  69 {
  70     entry->setText("");
  71     if(greeter->isAuthenticated()) {
  72         greeter->login(greeter->authenticationUser(), greeter->defaultSession(), greeter->defaultLanguage());
  73     }
  74     else {
  75         label->setText("Failed to authenticate");
  76     }
  77 }
  78
  79 void LoginDialog::quit()
  80 {
  81     exit(0);
  82 }
  83
  84 int main(int argc, char *argv[])
  85 {
  86     QApplication a(argc, argv);
  87
  88     LoginDialog d;
  89     d.show();
  90
  91     return a.exec();
  92 }