JXR support

CCBUG: 451584

An implementation of the JXR format.

src/imageformats/CMakeLists.txt

@@ -115,6 +115,20 @@ endif()
 
 ##################################
 
+if (LibJXR_FOUND)
+    kimageformats_add_plugin(kimg_jxr SOURCES jxr.cpp)
+    kde_enable_exceptions()
+    target_include_directories(kimg_jxr PRIVATE ${LIBJXR_INCLUDE_DIRS})
+    target_link_libraries(kimg_jxr PRIVATE jpegxr jxrglue)
+    target_compile_definitions(kimg_jxr PRIVATE INITGUID)
+    if (NOT CMAKE_SYSTEM_NAME STREQUAL "Windows")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-error=undef")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-error=undef")
+    endif()
+endif()
+
+##################################
+
 if (KF6Archive_FOUND)
 
     kimageformats_add_plugin(kimg_kra SOURCES kra.cpp)

src/imageformats/jxr.json

@@ -0,0 +1,4 @@
+{
+    "Keys": [ "jxr", "wdp", "hdp" ],
+    "MimeTypes": [ "image/jxr", "image/vnd.ms-photo", "image/vnd.ms-photo" ]
+}

src/imageformats/jxr_p.h

@@ -0,0 +1,47 @@
+/*
+    This file is part of the KDE project
+    SPDX-FileCopyrightText: 2024 Mirco Miranda <mircomir@outlook.com>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef KIMG_JXR_P_H
+#define KIMG_JXR_P_H
+
+#include <QImageIOPlugin>
+#include <QSharedDataPointer>
+
+class JXRHandlerPrivate;
+
+class JXRHandler : public QImageIOHandler
+{
+public:
+    JXRHandler();
+
+    bool canRead() const override;
+    bool read(QImage *outImage) override;
+    bool write(const QImage &image) override;
+
+    void setOption(ImageOption option, const QVariant &value) override;
+    bool supportsOption(QImageIOHandler::ImageOption option) const override;
+    QVariant option(QImageIOHandler::ImageOption option) const override;
+
+    static bool canRead(QIODevice *device);
+
+private:
+    mutable QSharedDataPointer<JXRHandlerPrivate> d;
+
+    qint32 m_quality;
+};
+
+class JXRPlugin : public QImageIOPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "jxr.json")
+
+public:
+    Capabilities capabilities(QIODevice *device, const QByteArray &format) const override;
+    QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const override;
+};
+
+#endif // KIMG_JXR_P_H

src/imageformats/util_p.h

@@ -13,6 +13,19 @@
 #include <QImage>
 #include <QImageIOHandler>
 
+// Image metadata keys to use in plugins (so they are consistent)
+#define META_KEY_DESCRIPTION "Description"
+#define META_KEY_MANUFACTURER "Manufacturer"
+#define META_KEY_SOFTWARE "Software"
+#define META_KEY_MODEL "Model"
+#define META_KEY_AUTHOR "Author"
+#define META_KEY_COPYRIGHT "Copyright"
+#define META_KEY_CREATIONDATE "CreationDate"
+#define META_KEY_TITLE "Title"
+#define META_KEY_DOCUMENTNAME "DocumentName"
+#define META_KEY_HOSTCOMPUTER "HostComputer"
+#define META_KEY_XMP "XML:com.adobe.xmp"
+
 // QList uses some extra space for stuff, hence the 32 here suggested by Thiago Macieira
 static constexpr int kMaxQVectorSize = std::numeric_limits<int>::max() - 32;