imagecompareboard.cpp

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#include "imagecompareboard.h"
 
#include <QHBoxLayout>
#include <QLabel>
#include <QScrollArea>
#include <QScrollBar>
#include <QSplitter>
 
namespace Widgets {
 
class ImageCompareBoardPrivate {
public:
    QLabel* originalImgLabel;
    QLabel* comparedImgLabel;
 
    QImage originalImg;
    QImage comparedImg;
};
 
ImageCompareBoard::ImageCompareBoard(QWidget* parent) : QWidget(parent) {
    d_ptr = new ImageCompareBoardPrivate;
 
    d_ptr->originalImgLabel = new QLabel(this);
    d_ptr->comparedImgLabel = new QLabel(this);
 
    QHBoxLayout* layout = new QHBoxLayout;
 
    QSplitter* splitter = new QSplitter(Qt::Horizontal, this);
    splitter->setHandleWidth(1);
    QScrollArea* originScrollArea = new QScrollArea(this);
    originScrollArea->setWidgetResizable(true);
    QScrollArea* compareScrollArea = new QScrollArea(this);
    compareScrollArea->setWidgetResizable(true);
    originScrollArea->setWidget(d_ptr->originalImgLabel);
    compareScrollArea->setWidget(d_ptr->comparedImgLabel);
    splitter->addWidget(originScrollArea);
    splitter->addWidget(compareScrollArea);
 
    layout->addWidget(splitter);
    setLayout(layout);
 
    // sync with each other
    connect(originScrollArea->horizontalScrollBar(), SIGNAL(valueChanged(int)),
            compareScrollArea->horizontalScrollBar(), SLOT(setValue(int)));
    connect(compareScrollArea->horizontalScrollBar(), SIGNAL(valueChanged(int)),
            originScrollArea->horizontalScrollBar(), SLOT(setValue(int)));
    connect(compareScrollArea->verticalScrollBar(), SIGNAL(valueChanged(int)),
            originScrollArea->verticalScrollBar(), SLOT(setValue(int)));
    connect(originScrollArea->verticalScrollBar(), SIGNAL(valueChanged(int)),
            compareScrollArea->verticalScrollBar(), SLOT(setValue(int)));
 
    // hide them initially
    d_ptr->originalImgLabel->hide();
    d_ptr->comparedImgLabel->hide();
}
 
ImageCompareBoard::~ImageCompareBoard() { delete d_ptr; }
 
void ImageCompareBoard::setOriginalImage(const QImage& img) {
    d_ptr->originalImgLabel->setPixmap(QPixmap::fromImage(img));
    d_ptr->originalImgLabel->show();
}
 
QImage ImageCompareBoard::originalImage() const { return d_ptr->originalImg; }
 
void ImageCompareBoard::setComparedImage(const QImage& img) {
    d_ptr->comparedImgLabel->setPixmap(QPixmap::fromImage(img));
    d_ptr->comparedImgLabel->show();
}
 
QImage ImageCompareBoard::comparedImage() const { return d_ptr->comparedImg; }
 
}  // namespace Widgets