diff options
Diffstat (limited to 'qtjava/javalib/examples/progressbar')
-rw-r--r-- | qtjava/javalib/examples/progressbar/Main.java | 31 | ||||
-rw-r--r-- | qtjava/javalib/examples/progressbar/ProgressBar.java | 174 |
2 files changed, 205 insertions, 0 deletions
diff --git a/qtjava/javalib/examples/progressbar/Main.java b/qtjava/javalib/examples/progressbar/Main.java new file mode 100644 index 00000000..be103c03 --- /dev/null +++ b/qtjava/javalib/examples/progressbar/Main.java @@ -0,0 +1,31 @@ +/*************************************************************************** +* $Id$ +** +* 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. +** +****************************************************************************/ + +import org.kde.qt.*; + +class Main { + +public static void main(String[] args) +{ + QApplication a = new QApplication( args ); + + ProgressBar progressbar = new ProgressBar(); + progressbar.setCaption("Qt Example - ProgressBar"); + a.setMainWidget(progressbar); + progressbar.show(); + + a.exec(); + return; +} + + static { + qtjava.initialize(); + } +} diff --git a/qtjava/javalib/examples/progressbar/ProgressBar.java b/qtjava/javalib/examples/progressbar/ProgressBar.java new file mode 100644 index 00000000..1d8ab1d3 --- /dev/null +++ b/qtjava/javalib/examples/progressbar/ProgressBar.java @@ -0,0 +1,174 @@ +/*************************************************************************** +* $Id$ +** +* 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. +** +****************************************************************************/ + +import org.kde.qt.*; + + +class ProgressBar extends QButtonGroup +{ + +protected QRadioButton slow, normal, fast; +protected QPushButton start, pause, reset; +protected QProgressBar progress; +protected QTimer timer; + + +/* + Constructor + * + Creates child widgets of the ProgressBar widget + */ + +ProgressBar( ) +{ + this(null, null); +} + +ProgressBar( QWidget parent, String name ) +{ + super( 0, Horizontal, "Progress Bar", parent, name ); + timer = new QTimer(); + setMargin( 10 ); + + QGridLayout toplayout = new QGridLayout( layout(), 2, 2, 5); + + setRadioButtonExclusive( true ); + + // insert three radiobuttons which the user can use + // to set the speed of the progress and two pushbuttons + // to start/pause/continue and reset the progress + slow = new QRadioButton( "&Slow", this ); + normal = new QRadioButton( "&Normal", this ); + fast = new QRadioButton( "&Fast", this ); + QVBoxLayout vb1 = new QVBoxLayout(); + toplayout.addLayout( vb1, 0, 0 ); + vb1.addWidget( slow ); + vb1.addWidget( normal ); + vb1.addWidget( fast ); + + // two push buttons, one for start, for for reset. + start = new QPushButton( "&Start", this ); + reset = new QPushButton( "&Reset", this ); + QVBoxLayout vb2 = new QVBoxLayout(); + toplayout.addLayout( vb2, 0, 1 ); + vb2.addWidget( start ); + vb2.addWidget( reset ); + + // Create the progressbar + progress = new QProgressBar( 100, this ); + // progress.setStyle( new QMotifStyle() ); + toplayout.addMultiCellWidget( progress, 1, 1, 0, 1 ); + + // connect the clicked() SIGNALs of the pushbuttons to SLOTs + connect( start, SIGNAL(" clicked()"), this, SLOT(" slotStart()") ); + connect( reset, SIGNAL(" clicked()"), this, SLOT(" slotReset()") ); + + // connect the timeout() SIGNAL of the progress-timer to a SLOT + connect( timer, SIGNAL(" timeout()"), this, SLOT(" slotTimeout()") ); + + // Let's start with normal speed... + normal.setChecked( true ); + + + // some contraints + start.setFixedWidth( 80 ); + setMinimumWidth( 300 ); +} + +/* + SLOT slotStart + * + This SLOT is called if the user clicks start/pause/continue + button + */ + +void slotStart() +{ + // If the progress bar is at the beginning... + if ( progress.progress() == -1 ) { + // ...set according to the checked speed-radiobutton + // the number of steps which are needed to complete the process + if ( slow.isChecked() ) + progress.setTotalSteps( 10000 ); + else if ( normal.isChecked() ) + progress.setTotalSteps( 1000 ); + else + progress.setTotalSteps( 50 ); + + // disable the speed-radiobuttons + slow.setEnabled( false ); + normal.setEnabled( false ); + fast.setEnabled( false ); + } + + // If the progress is not running... + if ( !timer.isActive() ) { + // ...start the timer (and so the progress) with a interval of 1 ms... + timer.start( 1 ); + // ...and rename the start/pause/continue button to Pause + start.setText( "&Pause" ); + } else { // if the prgress is running... + // ...stop the timer (and so the prgress)... + timer.stop(); + // ...and rename the start/pause/continue button to Continue + start.setText( "&Continue" ); + } +} + +/* + SLOT slotReset + * + This SLOT is called when the user clicks the reset button + */ + +void slotReset() +{ + // stop the timer and progress + timer.stop(); + + // rename the start/pause/continue button to Start... + start.setText( "&Start" ); + // ...and enable this button + start.setEnabled( true ); + + // enable the speed-radiobuttons + slow.setEnabled( true ); + normal.setEnabled( true ); + fast.setEnabled( true ); + + // reset the progressbar + progress.reset(); +} + +/* + SLOT slotTimeout + * + This SLOT is called each ms when the timer is + active (== progress is running) + */ + +void slotTimeout() +{ + int p = progress.progress(); + + // If the progress is complete... + if ( p == progress.totalSteps() ) { + // ...rename the start/pause/continue button to Start... + start.setText( "&Start" ); + // ...and disable it... + start.setEnabled( false ); + // ...and return + return; + } + + // If the process is not complete increase it + progress.setProgress( ++p ); +} +} |