Add support for invert and super pixel

imagescrollareagl.cpp

@@ -53,6 +53,7 @@ ImageWidget::ImageWidget(QWidget *parent) : QOpenGLWidget(parent)
     m_blockRepaint = false;
     m_range = UINT16_MAX;
     m_imgWidth = m_imgHeight = -1;
+    m_superpixel = m_invert = false;
 }
 
 ImageWidget::~ImageWidget()
@@ -60,7 +61,7 @@ ImageWidget::~ImageWidget()
     makeCurrent();
 }
 
-void ImageWidget::setImage(RawImage *image)
+void ImageWidget::setImage(const RawImage *image)
 {
     if(image == nullptr)return;
 
@@ -78,6 +79,7 @@ void ImageWidget::setImage(RawImage *image)
     m_image->setWrapMode(QOpenGLTexture::ClampToEdge);
     m_image->setBorderColor(0, 0, 0, 0);
     m_image->setData(0, rawImageType.pixelFormat, rawImageType.dataType, image->data(), m_transferOptions.get());
+    m_image->setLevelOfDetailRange(m_superpixel ? 1 : 0, m_image->mipMaxLevel());
     m_image->generateMipMaps();
     m_bwImg = rawImageType.bw;
     update();
@@ -126,6 +128,19 @@ void ImageWidget::setOffset(int dx, int dy)
     update();
 }
 
+void ImageWidget::superPixel(bool enable)
+{
+    m_superpixel = enable;
+    m_image->setLevelOfDetailRange(enable ? 1 : 0, m_image->mipMaxLevel());
+    update();
+}
+
+void ImageWidget::invert(bool enable)
+{
+    m_invert = enable;
+    update();
+}
+
 QImage ImageWidget::renderToImage()
 {
     if(m_imgWidth < 0)return QImage();
@@ -164,6 +179,7 @@ void ImageWidget::paintGL()
     m_program->setUniformValue("mtf_param", m_low, m_mid, m_high);
     m_program->setUniformValue("zoom", 1.0f/m_scale);
     m_program->setUniformValue("bw", m_bwImg);
+    m_program->setUniformValue("invert", m_invert);
 
     m_image->bind(0);
     f->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);