jfjoch_viewer: JFJochImage work in progress to improve performance (at least a bit)

viewer/widgets/JFJochDiffractionImage.cpp

@@ -342,6 +342,7 @@ void JFJochDiffractionImage::loadImage(std::shared_ptr<const JFJochReaderImage>
         }
         image = in_image;
         LoadImageInternal();
+        GeneratePixmap();
         Redraw();
     } else {
         image.reset();
@@ -364,37 +365,37 @@ void JFJochDiffractionImage::setAutoForeground(bool input) {
 void JFJochDiffractionImage::setResolutionRing(QVector<float> v) {
     res_ring = v;
     res_ring_auto = false;
-    Redraw();
+    updateOverlay();
 }
 
 void JFJochDiffractionImage::setResolutionRingAuto() {
     res_ring_auto = true;
-    Redraw();
+    updateOverlay();
 }
 
 void JFJochDiffractionImage::showSpots(bool input) {
     show_spots = input;
-    Redraw();
+    updateOverlay();
 }
 
 void JFJochDiffractionImage::showPredictions(bool input) {
     show_predictions = input;
-    Redraw();
+    updateOverlay();
 }
 
 void JFJochDiffractionImage::setSpotColor(QColor input) {
     spot_color = input;
-    Redraw();
+    updateOverlay();
 }
 
 void JFJochDiffractionImage::setPredictionColor(QColor input) {
     prediction_color = input;
-    Redraw();
+    updateOverlay();
 }
 
 void JFJochDiffractionImage::showHighestPixels(int32_t v) {
     show_highest_pixels = v;
-    Redraw();
+    updateOverlay();
 }
 
 void JFJochDiffractionImage::DrawSaturation() {
@@ -418,10 +419,11 @@ void JFJochDiffractionImage::DrawCross(float x, float y, float size, float width
 
 void JFJochDiffractionImage::showSaturation(bool input) {
     show_saturation = input;
-    Redraw();
+    GeneratePixmap();
+    updateOverlay();
 }
 
 void JFJochDiffractionImage::highlightIceRings(bool input) {
     highlight_ice_rings = input;
-    Redraw();
+    updateOverlay();
 }