PrismLauncher/launcher/ui/widgets/VariableSizedImageObject.h
Sefa Eyeoglu 215d7dbb74
chore: update license headers
Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>
2023-08-14 18:17:05 +02:00

65 lines
2.2 KiB
C++

// SPDX-License-Identifier: GPL-3.0-only
/*
* Prism Launcher - Minecraft Launcher
* Copyright (c) 2022 flowln <flowlnlnln@gmail.com>
*
* 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, version 3.
*
* 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 <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <QObject>
#include <QString>
#include <QTextObjectInterface>
#include <QUrl>
/** Custom image text object to be used instead of the normal one in ProjectDescriptionPage.
*
* Why? Because we want to re-scale images dynamically based on the document's size, in order to
* not have images being weirdly cropped out in different resolutions.
*/
class VariableSizedImageObject final : public QObject, public QTextObjectInterface {
Q_OBJECT
Q_INTERFACES(QTextObjectInterface)
public:
QSizeF intrinsicSize(QTextDocument* doc, int posInDocument, const QTextFormat& format) override;
void drawObject(QPainter* painter, const QRectF& rect, QTextDocument* doc, int posInDocument, const QTextFormat& format) override;
void setMetaEntry(QString meta_entry) { m_meta_entry = meta_entry; }
public slots:
/** Stops all currently loading images from modifying the document.
*
* This does not stop the ongoing network tasks, it only prevents their result
* from impacting the document any further.
*/
void flush();
private:
/** Adds the image to the document, in the given position.
*/
void parseImage(QTextDocument* doc, QImage image, int posInDocument);
/** Loads an image from an external source, and adds it to the document.
*
* This uses m_meta_entry to cache the image.
*/
void loadImage(QTextDocument* doc, const QUrl& source, int posInDocument);
private:
QString m_meta_entry;
QSet<QUrl> m_fetching_images;
};