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setscalewindow.cpp
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setscalewindow.cpp
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/*
* Copyright (C) 2012 Jorge Aparicio <[email protected]>
*
* This file is part of ImageQ.
*
* ImageQ is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* ImageQ is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with ImageQ. If not, see <http://www.gnu.org/licenses/>.
*/
#include "setscalewindow.h"
#include "ui_setscalewindow.h"
#include "image.h"
SetScaleWindow::SetScaleWindow(Image* image,
QWidget *parent) :
QMainWindow(parent),
ui(new Ui::SetScaleWindow),
image(image)
{
ui->setupUi(this);
ui->unitLineEdit->setValidator(new QRegExpValidator(QRegExp("[a-zA-Z]+")));
scale = image->scale;
showConversion();
this->setAttribute(Qt::WA_DeleteOnClose);
this->show();
}
SetScaleWindow::~SetScaleWindow()
{
delete ui;
}
void SetScaleWindow::on_lengthSpinBox_valueChanged(int)
{
updateConversion();
}
void SetScaleWindow::on_unitLineEdit_textEdited(const QString &)
{
if (ui->unitLineEdit->hasAcceptableInput())
updateConversion();
}
void SetScaleWindow::on_selectPushButton_clicked()
{
image->setSelectionMode(Image::Line);
connect(image, SIGNAL(lineSelected(QLine const&)),
this, SLOT(on_lineSelected(QLine const&)));
this->hide();
}
void SetScaleWindow::on_okPushButton_clicked()
{
image->scale = scale;
this->close();
}
void SetScaleWindow::on_lineSelected(QLine const& line)
{
int distance = sqrt(pow(line.dx(), 2) + pow(line.dy(), 2)) + 1;
ui->pixelsLabel->setText(QString::number(distance));
image->setSelectionMode(Image::None);
this->show();
image->update();
disconnect(image, SIGNAL(lineSelected(QLine const&)),
this, SLOT(on_lineSelected(QLine const&)));
updateConversion();
}
void SetScaleWindow::showConversion() const
{
ui->scaleLabel->setText(QString::number(scale, 'g', 4) +
' ' + image->unit);
}
void SetScaleWindow::updateConversion()
{
scale = ui->lengthSpinBox->value() / ui->pixelsLabel->text().toFloat();
image->unit = ui->unitLineEdit->text();
showConversion();
}