Make it combilable with Qt 5.13 and older

CMakeLists.txt

@@ -42,6 +42,15 @@ set(TENMON_SRC
     stretchtoolbar.cpp
 )
 
+option(COLOR_MANAGMENT "Enable sRGB framebuffer support for gamma correct images and color profiles support" ON)
+if(${Qt5Core_VERSION_STRING} VERSION_LESS "5.14")
+    set(COLOR_MANAGMENT OFF)
+endif(${Qt5Core_VERSION_STRING} VERSION_LESS "5.14")
+
+if(COLOR_MANAGMENT)
+    add_compile_definitions("COLOR_MANAGMENT")
+endif(COLOR_MANAGMENT)
+
 qt5_add_resources(TENMON_SRC resources.qrc)
 if(WIN32)
     list(APPEND TENMON_SRC icon.rc)

imagescrollareagl.cpp

@@ -24,8 +24,13 @@ const RawImageType rawImageTypes[] = {
     {QOpenGLTexture::Red, QOpenGLTexture::R8_UNorm, QOpenGLTexture::UInt8, true},
     {QOpenGLTexture::Red, QOpenGLTexture::R16_UNorm, QOpenGLTexture::UInt16, true},
     {QOpenGLTexture::Red, QOpenGLTexture::R32F, QOpenGLTexture::Float32, true},
+#ifdef COLOR_MANAGMENT
     {QOpenGLTexture::RGB, QOpenGLTexture::SRGB8, QOpenGLTexture::UInt8, false},
-    {QOpenGLTexture::RGBA,QOpenGLTexture::SRGB8_Alpha8, QOpenGLTexture::UInt8, false},
+    {QOpenGLTexture::RGBA,QOpenGLTexture::SRGB8, QOpenGLTexture::UInt8, false},
+#else
+    {QOpenGLTexture::RGB, QOpenGLTexture::RGB8_UNorm, QOpenGLTexture::UInt8, false},
+    {QOpenGLTexture::RGBA,QOpenGLTexture::RGB8_UNorm, QOpenGLTexture::UInt8, false},
+#endif
     {QOpenGLTexture::RGB, QOpenGLTexture::RGB16_UNorm, QOpenGLTexture::UInt16, false},
     {QOpenGLTexture::RGBA, QOpenGLTexture::RGB16_UNorm, QOpenGLTexture::UInt16, false},
     {QOpenGLTexture::RGB, QOpenGLTexture::RGB32F, QOpenGLTexture::Float32, false}
@@ -79,7 +84,9 @@ ImageWidget::ImageWidget(Database *database, QWidget *parent) : QOpenGLWidget(pa
     });
 
     setMouseTracking(true);
+#ifdef COLOR_MANAGMENT
     setTextureFormat(GL_SRGB8_ALPHA8);
+#endif
 }
 
 ImageWidget::~ImageWidget()
@@ -290,7 +297,9 @@ void ImageWidget::paintGL()
     }
     else
     {
+#ifdef COLOR_MANAGMENT
         if(m_srgb)f->glEnable(GL_FRAMEBUFFER_SRGB);
+#endif
         m_vao->bind();
         m_image->bind(0);
         m_program->bind();
@@ -301,7 +310,9 @@ void ImageWidget::paintGL()
         m_program->setUniformValue("bw", m_bwImg);
         m_program->setUniformValue("invert", m_invert);
         f->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+#ifdef COLOR_MANAGMENT
         if(m_srgb)f->glDisable(GL_FRAMEBUFFER_SRGB);
+#endif
     }
 
 }

loadrunable.cpp

@@ -5,7 +5,6 @@
 #include <QFileInfo>
 #include <QPainter>
 #include <QElapsedTimer>
-#include <QColorSpace>
 #include <QDebug>
 #include <iostream>
 #include <libexif/exif-data.h>
@@ -15,7 +14,10 @@
 #include "starfit.h"
 #include "wcslib/wcshdr.h"
 
+#ifdef COLOR_MANAGMENT
+#include <QColorSpace>
 static pcl::ICCProfile sRgbIccProfile((void*)QColorSpace(QColorSpace::SRgb).iccProfile().data());
+#endif
 
 LoadRunable::LoadRunable(const QString &file, Image *receiver, AnalyzeLevel level, bool thumbnail) :
     m_file(file),
@@ -293,6 +295,7 @@ bool loadPCLImage(pcl::XISFReader &xisf, RawImage **image)
     xisf.ReadImage(pclImage);
     pclImage.Status().DisableInitialization();
 
+#ifdef COLOR_MANAGMENT
     pcl::ICCProfile iccProfile = xisf.ReadICCProfile();
     if(iccProfile.IsProfile())
     {
@@ -302,6 +305,7 @@ bool loadPCLImage(pcl::XISFReader &xisf, RawImage **image)
         iccTran.Add(sRgbIccProfile);
         iccTran >> pclImage;
     }
+#endif
 
     int numChannels = pclImage.NumberOfChannels();
     cv::Mat cvImg[numChannels];
@@ -401,8 +405,10 @@ void LoadRunable::run()
     else
     {
         QImage img(m_file);
+#ifdef COLOR_MANAGMENT
         if(img.colorSpace().isValid())
             img.convertToColorSpace(QColorSpace::SRgb);
+#endif
 
         ExifData *exif = exif_data_new_from_file(m_file.toLocal8Bit().constData());
         info.info.append({QObject::tr("Width"), QString::number(img.width())});

main.cpp

@@ -15,7 +15,9 @@ int main(int argc, char *argv[])
     format.setMinorVersion(3);
     format.setOption(QSurfaceFormat::DebugContext);
     format.setProfile(QSurfaceFormat::OpenGLContextProfile::CoreProfile);
+#ifdef COLOR_MANAGMENT
     format.setColorSpace(QSurfaceFormat::sRGBColorSpace);
+#endif
     QSurfaceFormat::setDefaultFormat(format);
 
     QApplication a(argc, argv);