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/*
* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
*
* 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 <QBrush>
#include <QDebug>
#include <QDesktopServices>
#include <QImage>
#include <QPainter>
#include <QPixmap>
#include "ImageItem.h"
#include "ImageOverlayDialog.h"
namespace events = matrix::events;
namespace msgs = matrix::events::messages;
ImageItem::ImageItem(QSharedPointer<MatrixClient> client, const events::MessageEvent<msgs::Image> &event, QWidget *parent)
: QWidget(parent)
, event_{event}
, client_{client}
{
setMaximumSize(max_width_, max_height_);
setMouseTracking(true);
setCursor(Qt::PointingHandCursor);
setAttribute(Qt::WA_Hover, true);
url_ = event.msgContent().url();
text_ = event.content().body();
QList<QString> url_parts = url_.toString().split("mxc://");
if (url_parts.size() != 2) {
qDebug() << "Invalid format for image" << url_.toString();
return;
}
QString media_params = url_parts[1];
url_ = QString("%1/_matrix/media/r0/download/%2").arg(client_.data()->getHomeServer(), media_params);
client_.data()->downloadImage(event.eventId(), url_);
connect(client_.data(),
SIGNAL(imageDownloaded(const QString &, const QPixmap &)),
this,
SLOT(imageDownloaded(const QString &, const QPixmap &)));
}
void ImageItem::imageDownloaded(const QString &event_id, const QPixmap &img)
{
if (event_id != event_.eventId())
return;
setImage(img);
}
void ImageItem::openUrl()
{
if (url_.toString().isEmpty())
return;
if (!QDesktopServices::openUrl(url_))
qWarning() << "Could not open url" << url_.toString();
}
void ImageItem::scaleImage()
{
if (image_.isNull())
return;
auto width_ratio = (double)max_width_ / (double)image_.width();
auto height_ratio = (double)max_height_ / (double)image_.height();
auto min_aspect_ratio = std::min(width_ratio, height_ratio);
if (min_aspect_ratio > 1) {
width_ = image_.width();
height_ = image_.height();
} else {
width_ = image_.width() * min_aspect_ratio;
height_ = image_.height() * min_aspect_ratio;
}
setMinimumSize(width_, height_);
scaled_image_ = image_.scaled(width_, height_, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
}
QSize ImageItem::sizeHint() const
{
if (image_.isNull())
return QSize(max_width_, bottom_height_);
return QSize(width_, height_);
}
void ImageItem::setImage(const QPixmap &image)
{
image_ = image;
scaleImage();
update();
}
void ImageItem::mousePressEvent(QMouseEvent *event)
{
if (event->button() != Qt::LeftButton)
return;
if (image_.isNull()) {
openUrl();
return;
}
auto point = event->pos();
// Click on the text box.
if (QRect(0, height_ - bottom_height_, width_, bottom_height_).contains(point)) {
openUrl();
} else {
auto image_dialog = new ImageOverlayDialog(image_, this);
image_dialog->show();
}
}
void ImageItem::resizeEvent(QResizeEvent *event)
{
Q_UNUSED(event);
scaleImage();
}
void ImageItem::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
QFont font("Open Sans");
font.setPixelSize(12);
QFontMetrics metrics(font);
int fontHeight = metrics.height();
if (image_.isNull()) {
int height = fontHeight + 10;
setMinimumSize(max_width_, fontHeight + 10);
QString elidedText = metrics.elidedText(text_, Qt::ElideRight, max_width_ - 10);
painter.setFont(font);
painter.setPen(QPen(QColor(66, 133, 244)));
painter.drawText(QPoint(0, height / 2 + 2), elidedText);
return;
}
painter.fillRect(QRect(0, 0, width_, height_), scaled_image_);
if (underMouse()) {
// Bottom text section
painter.fillRect(QRect(0, height_ - bottom_height_, width_, bottom_height_),
QBrush(QColor(33, 33, 33, 128)));
QString elidedText = metrics.elidedText(text_, Qt::ElideRight, width_ - 10);
font.setWeight(500);
painter.setFont(font);
painter.setPen(QPen(QColor("white")));
painter.drawText(QPoint(5, height_ - fontHeight / 2), elidedText);
}
}
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