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- /****************************************************************************
- ** $Id: qt/lineedits.cpp 3.0.3 edited Oct 12 12:18 $
- **
- ** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
- **
- ** This file is part of an example program for Qt. This example
- ** program may be used, distributed and modified without limitation.
- **
- *****************************************************************************/
-
- #include "lineedits.h"
-
- #include <qlineedit.h>
- #include <qcombobox.h>
- #include <qframe.h>
- #include <qvalidator.h>
- #include <qlabel.h>
- #include <qlayout.h>
- #include <qhbox.h>
-
- /*
- * Constructor
- *
- * Creates child widgets of the LineEdits widget
- */
-
- LineEdits::LineEdits( QWidget *parent, const char *name )
- : QGroupBox( 0, Horizontal, "Line edits", parent, name )
- {
- setMargin( 10 );
-
- QVBoxLayout* box = new QVBoxLayout( layout() );
-
- QHBoxLayout *row1 = new QHBoxLayout( box );
- row1->setMargin( 5 );
-
- // Create a Label
- QLabel* label = new QLabel( "Echo Mode: ", this);
- row1->addWidget( label );
-
- // Create a Combobox with three items...
- combo1 = new QComboBox( FALSE, this );
- row1->addWidget( combo1 );
- combo1->insertItem( "Normal", -1 );
- combo1->insertItem( "Password", -1 );
- combo1->insertItem( "No Echo", -1 );
- // ...and connect the activated() SIGNAL with the slotEchoChanged() SLOT to be able
- // to react when an item is selected
- connect( combo1, SIGNAL( activated( int ) ), this, SLOT( slotEchoChanged( int ) ) );
-
- // insert the first LineEdit
- lined1 = new QLineEdit( this );
- box->addWidget( lined1 );
-
- // another widget which is used for layouting
- QHBoxLayout *row2 = new QHBoxLayout( box );
- row2->setMargin( 5 );
-
- // and the second label
- label = new QLabel( "Validator: ", this );
- row2->addWidget( label );
-
- // A second Combobox with again three items...
- combo2 = new QComboBox( FALSE, this );
- row2->addWidget( combo2 );
- combo2->insertItem( "No Validator", -1 );
- combo2->insertItem( "Integer Validator", -1 );
- combo2->insertItem( "Double Validator", -1 );
- // ...and again the activated() SIGNAL gets connected with a SLOT
- connect( combo2, SIGNAL( activated( int ) ), this, SLOT( slotValidatorChanged( int ) ) );
-
- // and the second LineEdit
- lined2 = new QLineEdit( this );
- box->addWidget( lined2 );
-
- // yet another widget which is used for layouting
- QHBoxLayout *row3 = new QHBoxLayout( box );
- row3->setMargin( 5 );
-
- // we need a label for this too
- label = new QLabel( "Alignment: ", this );
- row3->addWidget( label );
-
- // A combo box for setting alignment
- combo3 = new QComboBox( FALSE, this );
- row3->addWidget( combo3 );
- combo3->insertItem( "Left", -1 );
- combo3->insertItem( "Centered", -1 );
- combo3->insertItem( "Right", -1 );
- // ...and again the activated() SIGNAL gets connected with a SLOT
- connect( combo3, SIGNAL( activated( int ) ), this, SLOT( slotAlignmentChanged( int ) ) );
-
- // and the third lineedit
- lined3 = new QLineEdit( this );
- box->addWidget( lined3 );
-
- // last widget used for layouting
- QHBox *row4 = new QHBox( this );
- box->addWidget( row4 );
- row4->setMargin( 5 );
-
- // last label
- (void)new QLabel( "Read-Only: ", row4 );
-
- // A combo box for setting alignment
- combo4 = new QComboBox( FALSE, row4 );
- combo4->insertItem( "False", -1 );
- combo4->insertItem( "True", -1 );
- // ...and again the activated() SIGNAL gets connected with a SLOT
- connect( combo4, SIGNAL( activated( int ) ), this, SLOT( slotReadOnlyChanged( int ) ) );
-
- // and the last lineedit
- lined4 = new QLineEdit( this );
- box->addWidget( lined4 );
-
- // give the first LineEdit the focus at the beginning
- lined1->setFocus();
- }
-
- /*
- * SLOT slotEchoChanged( int i )
- *
- * i contains the number of the item which the user has been chosen in the
- * first Combobox. According to this value, we set the Echo-Mode for the
- * first LineEdit.
- */
-
- void LineEdits::slotEchoChanged( int i )
- {
- switch ( i ) {
- case 0:
- lined1->setEchoMode( QLineEdit::Normal );
- break;
- case 1:
- lined1->setEchoMode( QLineEdit::Password );
- break;
- case 2:
- lined1->setEchoMode( QLineEdit::NoEcho );
- break;
- }
-
- lined1->setFocus();
- }
-
- /*
- * SLOT slotValidatorChanged( int i )
- *
- * i contains the number of the item which the user has been chosen in the
- * second Combobox. According to this value, we set a validator for the
- * second LineEdit. A validator checks in a LineEdit each character which
- * the user enters and accepts it if it is valid, else the character gets
- * ignored and not inserted into the lineedit.
- */
-
- void LineEdits::slotValidatorChanged( int i )
- {
- switch ( i ) {
- case 0:
- lined2->setValidator( 0 );
- break;
- case 1:
- lined2->setValidator( new QIntValidator( lined2 ) );
- break;
- case 2:
- lined2->setValidator( new QDoubleValidator( -999.0, 999.0, 2,
- lined2 ) );
- break;
- }
-
- lined2->setText( "" );
- lined2->setFocus();
- }
-
-
- /*
- * SLOT slotAlignmentChanged( int i )
- *
- * i contains the number of the item which the user has been chosen in
- * the third Combobox. According to this value, we set an alignment
- * third LineEdit.
- */
-
- void LineEdits::slotAlignmentChanged( int i )
- {
- switch ( i ) {
- case 0:
- lined3->setAlignment( QLineEdit::AlignLeft );
- break;
- case 1:
- lined3->setAlignment( QLineEdit::AlignCenter );
- break;
- case 2:
- lined3->setAlignment( QLineEdit::AlignRight );
- break;
- }
-
- lined3->setFocus();
- }
-
-
- /*
- * SLOT slotReadOnlyChanged( int i )
- *
- * i contains the number of the item which the user has been chosen in
- * the fourth Combobox. According to this value, we toggle read-only.
- */
-
- void LineEdits::slotReadOnlyChanged( int i )
- {
- switch ( i ) {
- case 0:
- lined4->setReadOnly( FALSE );
- break;
- case 1:
- lined4->setReadOnly( TRUE );
- break;
- }
-
- lined4->setFocus();
- }
-