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|
package Window;
use strict;
use warnings;
use QtCore4;
use QtGui4;
use RenderArea;
# [0]
use QtCore4::isa qw( Qt::Widget );
use QtCore4::slots
operationChanged => [''],
shapeSelected => ['int'];
# [0]
# [1]
use constant { NumTransformedAreas => 3 };
sub originalRenderArea() {
return this->{originalRenderArea};
}
sub transformedRenderAreas() {
return this->{transformedRenderAreas};
}
sub shapeComboBox() {
return this->{shapeComboBox};
}
sub operationComboBoxes() {
return this->{operationComboBoxes};
}
sub shapes() {
return this->{shapes};
}
# [1]
# [0]
sub NEW
{
my ($class) = @_;
$class->SUPER::NEW();
this->{originalRenderArea} = RenderArea();
this->{shapeComboBox} = Qt::ComboBox();
this->shapeComboBox->addItem(this->tr('Clock'));
this->shapeComboBox->addItem(this->tr('House'));
this->shapeComboBox->addItem(this->tr('Text'));
this->shapeComboBox->addItem(this->tr('Truck'));
my $layout = Qt::GridLayout();
$layout->addWidget(this->originalRenderArea, 0, 0);
$layout->addWidget(this->shapeComboBox, 1, 0);
# [0]
# [1]
this->{transformedRenderAreas} = [];
this->{operationComboBoxes} = [];
this->{shapes} = [];
for (my $i = 0; $i < NumTransformedAreas; ++$i) {
this->transformedRenderAreas->[$i] = RenderArea();
this->operationComboBoxes->[$i] = Qt::ComboBox();
this->operationComboBoxes->[$i]->addItem(this->tr('No transformation'));
this->operationComboBoxes->[$i]->addItem(this->tr("Rotate by 60\xB0"));
this->operationComboBoxes->[$i]->addItem(this->tr('Scale to 75%'));
this->operationComboBoxes->[$i]->addItem(this->tr('Translate by (50, 50)'));
this->connect(this->operationComboBoxes->[$i], SIGNAL 'activated(int)',
this, SLOT 'operationChanged()');
$layout->addWidget(this->transformedRenderAreas->[$i], 0, $i + 1);
$layout->addWidget(this->operationComboBoxes->[$i], 1, $i + 1);
}
# [1]
# [2]
this->setLayout($layout);
this->setupShapes();
this->shapeSelected(0);
this->setWindowTitle(this->tr('Transformations'));
}
# [2]
# [3]
sub setupShapes
{
my $truck = Qt::PainterPath();
# [3]
$truck->setFillRule(Qt::WindingFill());
$truck->moveTo(0.0, 87.0);
$truck->lineTo(0.0, 60.0);
$truck->lineTo(10.0, 60.0);
$truck->lineTo(35.0, 35.0);
$truck->lineTo(100.0, 35.0);
$truck->lineTo(100.0, 87.0);
$truck->lineTo(0.0, 87.0);
$truck->moveTo(17.0, 60.0);
$truck->lineTo(55.0, 60.0);
$truck->lineTo(55.0, 40.0);
$truck->lineTo(37.0, 40.0);
$truck->lineTo(17.0, 60.0);
$truck->addEllipse(17.0, 75.0, 25.0, 25.0);
$truck->addEllipse(63.0, 75.0, 25.0, 25.0);
# [4]
my $clock = Qt::PainterPath();
# [4]
$clock->addEllipse(-50.0, -50.0, 100.0, 100.0);
$clock->addEllipse(-48.0, -48.0, 96.0, 96.0);
$clock->moveTo(0.0, 0.0);
$clock->lineTo(-2.0, -2.0);
$clock->lineTo(0.0, -42.0);
$clock->lineTo(2.0, -2.0);
$clock->lineTo(0.0, 0.0);
$clock->moveTo(0.0, 0.0);
$clock->lineTo(2.732, -0.732);
$clock->lineTo(24.495, 14.142);
$clock->lineTo(0.732, 2.732);
$clock->lineTo(0.0, 0.0);
# [5]
my $house = Qt::PainterPath();
# [5]
$house->moveTo(-45.0, -20.0);
$house->lineTo(0.0, -45.0);
$house->lineTo(45.0, -20.0);
$house->lineTo(45.0, 45.0);
$house->lineTo(-45.0, 45.0);
$house->lineTo(-45.0, -20.0);
$house->addRect(15.0, 5.0, 20.0, 35.0);
$house->addRect(-35.0, -15.0, 25.0, 25.0);
# [6]
my $text = Qt::PainterPath();
# [6]
my $font = Qt::Font();
$font->setPixelSize(50);
my $fontBoundingRect = Qt::FontMetrics($font)->boundingRect(this->tr('Qt4'));
$text->addText(-Qt::PointF($fontBoundingRect->center()), $font, this->tr('Qt4'));
# [7]
push @{this->shapes}, $clock;
push @{this->shapes}, $house;
push @{this->shapes}, $text;
push @{this->shapes}, $truck;
this->connect(this->shapeComboBox, SIGNAL 'activated(int)',
this, SLOT 'shapeSelected(int)');
}
# [7]
my @operationTable = (
RenderArea::NoTransformation,
RenderArea::Rotate,
RenderArea::Scale,
RenderArea::Translate
);
# [8]
sub operationChanged
{
my @operations;
for (my $i = 0; $i < NumTransformedAreas; ++$i) {
my $index = this->operationComboBoxes->[$i]->currentIndex();
push @operations, $operationTable[$index];
this->transformedRenderAreas->[$i]->setOperations(\@operations);
}
}
# [8]
# [9]
sub shapeSelected
{
my ($index) = @_;
my $shape = this->shapes->[$index];
this->originalRenderArea->setShape($shape);
for (my $i = 0; $i < NumTransformedAreas; ++$i) {
this->transformedRenderAreas->[$i]->setShape($shape);
}
}
# [9]
1;
|
