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package MainWindow;
use strict;
use warnings;
use QtCore4;
use QtGui4;
use QtCore4::isa qw( Qt::MainWindow );
use QtCore4::slots
open => [],
save => [],
about => [],
aboutToShowSaveAsMenu => [];
use PreviewForm;
sub textEdit() {
return this->{textEdit};
}
sub previewForm() {
return this->{previewForm};
}
sub codecs() {
return this->{codecs};
}
sub fileMenu() {
return this->{fileMenu};
}
sub helpMenu() {
return this->{helpMenu};
}
sub saveAsMenu() {
return this->{saveAsMenu};
}
sub openAct() {
return this->{openAct};
}
sub saveAsActs() {
return this->{saveAsActs};
}
sub exitAct() {
return this->{exitAct};
}
sub aboutAct() {
return this->{aboutAct};
}
sub aboutQtAct() {
return this->{aboutQtAct};
}
sub NEW
{
my ($class) = @_;
$class->SUPER::NEW();
this->{saveAsActs} = [];
this->{textEdit} = Qt::TextEdit();
textEdit->setLineWrapMode(Qt::TextEdit::NoWrap());
setCentralWidget(textEdit);
findCodecs();
this->{previewForm} = PreviewForm(this);
previewForm->setCodecList(codecs);
createActions();
createMenus();
setWindowTitle(this->tr('Codecs'));
resize(500, 400);
}
sub open
{
my $fileName = Qt::FileDialog::getOpenFileName(this);
if ($fileName) {
my $file = Qt::File($fileName);
if (!$file->open(Qt::File::ReadOnly())) {
Qt::MessageBox::warning(this, this->tr('Codecs'),
sprintf this->tr("Cannot read file %s:\n%s"),
$fileName,
$file.errorString());
return;
}
my $data = $file->readAll();
previewForm->setEncodedData($data);
if (previewForm->exec()) {
textEdit->setPlainText(previewForm->decodedString());
}
}
}
sub save
{
my $fileName = Qt::FileDialog::getSaveFileName(this);
if ($fileName) {
my $file = Qt::File($fileName);
if (!$file->open(Qt::File::WriteOnly() | Qt::File::Text())) {
Qt::MessageBox::warning(this, this->tr('Codecs'),
sprintf this->tr("Cannot write file %s:\n%s"),
$fileName,
$file.errorString());
return;
}
my $action = sender();
my $codecName = $action->data()->toByteArray();
my $out = Qt::TextStream($file);
$out->setCodec($codecName->constData());
no warnings qw(void);
$out << textEdit->toPlainText();
$file->close();
}
}
sub about
{
Qt::MessageBox::about(this, this->tr('About Codecs'),
this->tr('The <b>Codecs</b> example demonstrates how to read and write ' .
'files using various encodings.'));
}
sub aboutToShowSaveAsMenu
{
my $currentText = textEdit->toPlainText();
foreach my $action ( @{saveAsActs()} ) {
my $codecName = $action->data()->toByteArray();
my $codec = Qt::TextCodec::codecForName($codecName);
$action->setVisible($codec && $codec->canEncode($currentText));
}
}
sub findCodecs
{
my %codecMap;
my $iso8859RegExp = Qt::RegExp('ISO[- ]8859-([0-9]+).*');
foreach my $mib ( @{Qt::TextCodec::availableMibs()} ) {
my $codec = Qt::TextCodec::codecForMib($mib);
my $sortKey = $codec->name()->toUpper();
my $rank;
if ($sortKey->startsWith('UTF-8')) {
$rank = 1;
} elsif ($sortKey->startsWith('UTF-16')) {
$rank = 2;
} elsif ($iso8859RegExp->exactMatch($sortKey->constData())) {
if (length $iso8859RegExp->cap(1) == 1) {
$rank = 3;
}
else {
$rank = 4;
}
} else {
$rank = 5;
}
$sortKey->prepend(Qt::CString($rank));
$codecMap{$sortKey->constData} = $codec;
}
this->{codecs} = [map{ $codecMap{$_} } sort keys %codecMap];
}
sub createActions
{
this->{openAct} = Qt::Action(this->tr('&Open...'), this);
openAct->setShortcut(Qt::KeySequence(Qt::KeySequence::Open()));
this->connect(openAct, SIGNAL 'triggered()', this, SLOT 'open()');
foreach my $codec ( @{codecs() } ) {
my $text = sprintf this->tr('%s...'), $codec->name()->constData();
my $action = Qt::Action($text, this);
$action->setData(Qt::Variant($codec->name()));
this->connect($action, SIGNAL 'triggered()', this, SLOT 'save()');
push @{this->{saveAsActs}}, $action;
}
this->{exitAct} = Qt::Action(this->tr('E&xit'), this);
exitAct->setShortcut(Qt::KeySequence(Qt::KeySequence::Quit()));
this->connect(exitAct, SIGNAL 'triggered()', this, SLOT 'close()');
this->{aboutAct} = Qt::Action(this->tr('&About'), this);
this->connect(aboutAct, SIGNAL 'triggered()', this, SLOT 'about()');
this->{aboutQtAct} = Qt::Action(this->tr('About &Qt'), this);
this->connect(aboutQtAct, SIGNAL 'triggered()', qApp, SLOT 'aboutQt()');
}
sub createMenus
{
this->{saveAsMenu} = Qt::Menu(this->tr('&Save As'), this);
foreach my $action ( @{saveAsActs()} ) {
saveAsMenu->addAction($action);
}
this->connect(saveAsMenu, SIGNAL 'aboutToShow()',
this, SLOT 'aboutToShowSaveAsMenu()');
this->{fileMenu} = Qt::Menu(this->tr('&File'), this);
fileMenu->addAction(openAct);
fileMenu->addMenu(saveAsMenu);
fileMenu->addSeparator();
fileMenu->addAction(exitAct);
this->{helpMenu} = Qt::Menu(this->tr('&Help'), this);
helpMenu->addAction(aboutAct);
helpMenu->addAction(aboutQtAct);
menuBar()->addMenu(fileMenu);
menuBar()->addSeparator();
menuBar()->addMenu(helpMenu);
}
1;
|
