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authorMehmet Samet Duman <yongdohyun@projecttick.org>2026-04-02 18:51:45 +0300
committerMehmet Samet Duman <yongdohyun@projecttick.org>2026-04-02 18:51:45 +0300
commitd3261e64152397db2dca4d691a990c6bc2a6f4dd (patch)
treefac2f7be638651181a72453d714f0f96675c2b8b /archived/projt-launcher/launcher/PngReader.h
parent31b9a8949ed0a288143e23bf739f2eb64fdc63be (diff)
downloadProject-Tick-d3261e64152397db2dca4d691a990c6bc2a6f4dd.tar.gz
Project-Tick-d3261e64152397db2dca4d691a990c6bc2a6f4dd.zip
NOISSUE add archived projects
Signed-off-by: Mehmet Samet Duman <yongdohyun@projecttick.org>
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+// SPDX-License-Identifier: GPL-3.0-only
+// SPDX-FileCopyrightText: 2026 Project Tick
+// SPDX-FileContributor: Project Tick Team
+/*
+ * ProjT Launcher - Minecraft Launcher
+ * Copyright (C) 2026 Project Tick
+ *
+ * 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, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+#include <QByteArray>
+#include <QImage>
+#include <QString>
+
+/**
+ * @brief PNG reader using the bundled libpng and zlib
+ *
+ * This class provides PNG reading functionality using the project's own
+ * libpng and zlib implementations, avoiding conflicts with system libraries.
+ *
+ * Qt's QImage uses the system libpng which may be compiled with a different
+ * zlib version, causing "unsupported zlib version" errors. This class
+ * bypasses that by using our bundled libraries directly.
+ */
+class PngReader
+{
+ public:
+ /**
+ * @brief Read a PNG image from a file
+ * @param filePath Path to the PNG file
+ * @return QImage containing the decoded image, or null QImage on failure
+ */
+ static QImage readFromFile(const QString& filePath);
+
+ /**
+ * @brief Read a PNG image from memory
+ * @param data PNG data in memory
+ * @return QImage containing the decoded image, or null QImage on failure
+ */
+ static QImage readFromData(const QByteArray& data);
+
+ /**
+ * @brief Check if a file is a valid PNG
+ * @param filePath Path to the file
+ * @return true if the file has a valid PNG signature
+ */
+ static bool isPngFile(const QString& filePath);
+
+ /**
+ * @brief Check if data is valid PNG
+ * @param data Data to check
+ * @return true if the data has a valid PNG signature
+ */
+ static bool isPngData(const QByteArray& data);
+
+ /**
+ * @brief Get the last error message
+ * @return Error message from the last failed operation
+ */
+ static QString lastError();
+
+ /**
+ * @brief Set the last error message (for internal use by callbacks)
+ * @param error Error message
+ */
+ static void setLastError(const QString& error);
+
+ private:
+ static QString s_lastError;
+};