squawk/ui/utils/image.cpp

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/*
* Squawk messenger.
* Copyright (C) 2019 Yury Gubich <blue@macaw.me>
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QDebug>
#include "image.h"
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Image::Image(const QString& path, quint16 p_minWidth, QWidget* parent):
QLabel(parent),
pixmap(path),
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aspectRatio(0),
minWidth(p_minWidth)
{
setScaledContents(true);
recalculateAspectRatio();
}
Image::~Image()
{
}
int Image::heightForWidth(int width) const
{
int height = width / aspectRatio;
return height;
}
int Image::widthForHeight(int height) const
{
return height * aspectRatio;
}
bool Image::hasHeightForWidth() const
{
return true;
}
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void Image::recalculateAspectRatio()
{
qreal height = pixmap.height();
qreal width = pixmap.width();
aspectRatio = width / height;
setPixmap(pixmap);
setMinimumHeight(minWidth / aspectRatio);
setMinimumWidth(minWidth);
}
void Image::setMinWidth(quint16 p_minWidth)
{
if (minWidth != p_minWidth) {
minWidth = p_minWidth;
recalculateAspectRatio();
}
}
void Image::setPath(const QString& path)
{
pixmap = QPixmap(path);
recalculateAspectRatio();
}