Turn almost all Listeners into abstract interfaces

rtengine/LUT.h

@@ -89,8 +89,7 @@ using LUTd = LUT<double>;
 using LUTuc = LUT<uint8_t>;
 
 template<typename T>
-class LUT :
-    public rtengine::NonCopyable
+class LUT
 {
 protected:
     // list of variables ordered to improve cache speed
@@ -198,6 +197,8 @@ public:
         }
     }
 
+    explicit LUT(const LUT&) = delete;
+
     void setClip(int flags)
     {
         clip = flags;
@@ -225,7 +226,7 @@ public:
         return size > 0 ? upperBound : 0;
     }
 
-    LUT<T> & operator=(LUT<T> &rhs)
+    LUT<T> & operator=(const LUT<T>& rhs)
     {
         if (this != &rhs) {
             if (rhs.size > this->size) {
@@ -257,7 +258,7 @@ public:
 
     // handy to sum up per thread histograms. #pragma omp simd speeds up the loop by about factor 3 for LUTu (uint32_t).
     template<typename U = T, typename = typename std::enable_if<std::is_same<U, std::uint32_t>::value>::type>
-    LUT<T> & operator+=(LUT<T> &rhs)
+    LUT<T> & operator+=(const LUT<T>& rhs)
     {
         if (rhs.size == this->size) {
 #ifdef _OPENMP

rtengine/dcrop.cc

@@ -139,10 +139,10 @@ void Crop::update(int todo)
 
     // give possibility to the listener to modify crop window (as the full image dimensions are already known at this point)
     int wx, wy, ww, wh, ws;
-    bool overrideWindow = false;
+    const bool overrideWindow = cropImageListener;
 
-    if (cropImageListener) {
-        overrideWindow = cropImageListener->getWindow(wx, wy, ww, wh, ws);
+    if (overrideWindow) {
+        cropImageListener->getWindow(wx, wy, ww, wh, ws);
     }
 
     // re-allocate sub-images and arrays if their dimensions changed

rtengine/ex1simple.cc

@@ -21,11 +21,11 @@
 //#include <giomm.h>
 #include <helpers.h>
 
-class PListener : public rtengine::ProgressListener
+class PListener :
+    public rtengine::ProgressListener
 {
-
 public:
-    void setProgressStr (Glib::ustring str)
+    void setProgressStr(const Glib::ustring& str)
     {
         std::cout << str << std::endl;
     }
@@ -33,11 +33,16 @@ public:
     {
         std::cout << p << std::endl;
     }
+    void setProgressState(bool inProcessing)
+    {
+    }
+    void error(const Glib::ustring& descr)
+    {
+    }
 };
 
 int main (int argc, char* argv[])
 {
-
     if (argc < 4) {
         std::cout << "Usage: rtcmd <infile> <paramfile> <outfile>" << std::endl;
         exit(1);

rtengine/profilestore.h

@@ -39,14 +39,14 @@ class ProfileStoreListener
 {
 
 public:
-    virtual ~ProfileStoreListener() {}
+    virtual ~ProfileStoreListener() = default;
 
     /** @brief Called whenever the current value has to be stored before update. */
-    virtual void storeCurrentValue() {}
+    virtual void storeCurrentValue() = 0;
     /** @brief Called whenever the file list has been updated and the content of the listener has to be updated. */
     virtual void updateProfileList() = 0;
     /** @brief Called whenever the profile list has changed and the old value have to be restored (if possible). */
-    virtual void restoreValue() {}
+    virtual void restoreValue() = 0;
 };
 
 /// @brief ProfileStoreEntry type (folder or file)

rtengine/rtengine.h

@@ -154,21 +154,20 @@ public:
 /** This listener interface is used to indicate the progress of time consuming operations */
 class ProgressListener
 {
-
 public:
-    virtual ~ProgressListener() {}
+    virtual ~ProgressListener() = default;
     /** This member function is called when the percentage of the progress has been changed.
       * @param p is a number between 0 and 1 */
-    virtual void setProgress (double p) {}
+    virtual void setProgress(double p) = 0;
     /** This member function is called when a textual information corresponding to the progress has been changed.
       * @param str is the textual information corresponding to the progress */
-    virtual void setProgressStr (Glib::ustring str) {}
+    virtual void setProgressStr(const Glib::ustring& str) = 0;
     /** This member function is called when the state of the processing has been changed.
       * @param inProcessing =true if the processing has been started, =false if it has been stopped */
-    virtual void setProgressState (bool inProcessing) {}
+    virtual void setProgressState(bool inProcessing) = 0;
     /** This member function is called when an error occurs during the operation.
       * @param descr is the error message */
-    virtual void error (Glib::ustring descr) {}
+    virtual void error(const Glib::ustring& descr) = 0;
 };
 
 class ImageSource;
@@ -219,20 +218,20 @@ public:
 class PreviewImageListener
 {
 public:
-    virtual ~PreviewImageListener() {}
+    virtual ~PreviewImageListener() = default;
     /** With this member function the staged processor notifies the listener that it allocated a new
      * image to store the end result of the processing. It can be used in a shared manner.
      * @param img is a pointer to the image
      * @param scale describes the current scaling applied compared to the 100% size (preview scale)
      * @param cp holds the coordinates of the current crop rectangle */
-    virtual void setImage   (IImage8* img, double scale, procparams::CropParams cp) {}
+    virtual void setImage(IImage8* img, double scale, const procparams::CropParams& cp) = 0;
     /** With this member function the staged processor notifies the listener that the image passed as parameter
       * will be deleted, and no longer used to store the preview image.
       * @param img the pointer to the image to be destroyed. The listener has to free the image!  */
-    virtual void delImage   (IImage8* img) {}
+    virtual void delImage(IImage8* img) = 0;
     /** With this member function the staged processor notifies the listener that the preview image has been updated.
       * @param cp holds the coordinates of the current crop rectangle */
-    virtual void imageReady (procparams::CropParams cp) {}
+    virtual void imageReady(const procparams::CropParams& cp) = 0;
 };
 
 /** When the detailed crop image is ready for display during staged processing (thus the changes have been updated),
@@ -242,52 +241,70 @@ public:
 class DetailedCropListener
 {
 public:
-    virtual ~DetailedCropListener() {}
+    virtual ~DetailedCropListener() = default;
     /** With this member function the staged processor notifies the listener that the detailed crop image has been updated.
       * @param img is a pointer to the detailed crop image */
-    virtual void setDetailedCrop (IImage8* img, IImage8* imgtrue, procparams::ColorManagementParams cmp,
-                                  procparams::CropParams cp, int cx, int cy, int cw, int ch, int skip) {}
-    virtual bool getWindow       (int& cx, int& cy, int& cw, int& ch, int& skip)
-    {
-        return false;
-    }
-    //  virtual void    setPosition (int x, int y, bool update=true) {}
-
+    virtual void setDetailedCrop(
+        IImage8* img,
+        IImage8* imgtrue,
+        const procparams::ColorManagementParams& cmp,
+        const procparams::CropParams& cp,
+        int cx,
+        int cy,
+        int cw,
+        int ch,
+        int skip
+    ) = 0;
+    virtual void getWindow(int& cx, int& cy, int& cw, int& ch, int& skip) = 0;
 };
 
 /** This listener is used when the full size of the final image has been changed (e.g. rotated by 90 deg.) */
 class SizeListener
 {
 public:
-    virtual ~SizeListener() {}
+    virtual ~SizeListener() = default;
     /** This member function is called when the size of the final image has been changed
       * @param w is the width of the final image (without cropping)
       * @param h is the height of the final image (without cropping)
       * @param ow is the width of the final image (without resizing and cropping)
       * @param oh is the height of the final image (without resizing and cropping) */
-    virtual void sizeChanged (int w, int h, int ow, int oh) {}
+    virtual void sizeChanged(int w, int h, int ow, int oh) = 0;
 };
 
 /** This listener is used when the histogram of the final image has changed. */
 class HistogramListener
 {
 public:
-    virtual ~HistogramListener() {}
+    virtual ~HistogramListener() = default;
     /** This member function is called when the histogram of the final image has changed.
       * @param histRed is the array of size 256 containing the histogram of the red channel
       * @param histGreen is the array of size 256 containing the histogram of the green channel
       * @param histBlue is the array of size 256 containing the histogram of the blue channel
       * @param histLuma is the array of size 256 containing the histogram of the luminance channel
       * other for curves backgrounds, histRAW is RAW without colors */
-    virtual void histogramChanged (LUTu & histRed, LUTu & histGreen, LUTu & histBlue, LUTu & histLuma, LUTu & histToneCurve, LUTu & histLCurve, LUTu & histCCurve,/* LUTu & histCLurve,LUTu & histLLCurve, */LUTu & histLCAM, LUTu & histCCAM,
-                                   LUTu & histRedRaw, LUTu & histGreenRaw, LUTu & histBlueRaw, LUTu & histChroma, LUTu & histLRETI) {}
+    virtual void histogramChanged(
+        const LUTu& histRed,
+        const LUTu& histGreen,
+        const LUTu& histBlue,
+        const LUTu& histLuma,
+        const LUTu& histToneCurve,
+        const LUTu& histLCurve,
+        const LUTu& histCCurve,
+        const LUTu& histLCAM,
+        const LUTu& histCCAM,
+        const LUTu& histRedRaw,
+        const LUTu& histGreenRaw,
+        const LUTu& histBlueRaw,
+        const LUTu& histChroma,
+        const LUTu& histLRETI
+    ) = 0;
 };
 
 /** This listener is used when the auto exposure has been recomputed (e.g. when the clipping ratio changed). */
 class AutoExpListener
 {
 public:
-    virtual ~AutoExpListener() {}
+    virtual ~AutoExpListener() = default;
     /** This member function is called when the auto exposure has been recomputed.
       * @param brightness is the new brightness value (in logarithmic scale)
       * @param bright is the new ...
@@ -296,84 +313,79 @@ public:
       * @param hlcompr is the new highlight recovery amount
       * @param hlcomprthresh is the new threshold for hlcompr
       * @param hlrecons set to true if HighLight Reconstruction is enabled */
-    virtual void autoExpChanged (double brightness, int bright, int contrast, int black, int hlcompr, int hlcomprthresh, bool hlrecons) {}
+    virtual void autoExpChanged(double brightness, int bright, int contrast, int black, int hlcompr, int hlcomprthresh, bool hlrecons) = 0;
 
-    virtual void autoMatchedToneCurveChanged(procparams::ToneCurveParams::TcMode curveMode, const std::vector<double> &curve) {}
+    virtual void autoMatchedToneCurveChanged(procparams::ToneCurveParams::TcMode curveMode, const std::vector<double>& curve) = 0;
 };
 
 class AutoCamListener
 {
 public :
-    virtual ~AutoCamListener() {}
-    virtual void autoCamChanged (double ccam, double ccamout) {}
-    virtual void adapCamChanged (double cadap) {}
-    virtual void ybCamChanged (int yb) {}
-
+    virtual ~AutoCamListener() = default;
+    virtual void autoCamChanged(double ccam, double ccamout) = 0;
+    virtual void adapCamChanged(double cadap) = 0;
+    virtual void ybCamChanged(int yb) = 0;
 };
 
 class AutoChromaListener
 {
 public :
-    virtual ~AutoChromaListener() {}
-    virtual void chromaChanged (double autchroma, double autred, double autblue) {}
-    virtual void noiseChanged (double nresid, double highresid) {}
-    virtual void noiseTilePrev (int tileX, int tileY, int prevX, int prevY, int sizeT, int sizeP) {}
-
+    virtual ~AutoChromaListener() = default;
+    virtual void chromaChanged(double autchroma, double autred, double autblue) = 0;
+    virtual void noiseChanged(double nresid, double highresid) = 0;
+    virtual void noiseTilePrev(int tileX, int tileY, int prevX, int prevY, int sizeT, int sizeP) = 0;
 };
 
 class RetinexListener
 {
-public :
-    virtual ~RetinexListener() {}
-    virtual void minmaxChanged (double cdma, double cdmin, double mini, double maxi, double Tmean, double Tsigma, double Tmin, double Tmax) {}
-
+public:
+    virtual ~RetinexListener() = default;
+    virtual void minmaxChanged(double cdma, double cdmin, double mini, double maxi, double Tmean, double Tsigma, double Tmin, double Tmax) = 0;
 };
 
 class AutoColorTonListener
 {
-public :
-    virtual ~AutoColorTonListener() {}
-    virtual void autoColorTonChanged (int bwct, int satthres, int satprot) {}
+public:
+    virtual ~AutoColorTonListener() = default;
+    virtual void autoColorTonChanged(int bwct, int satthres, int satprot) = 0;
 };
 
 class AutoBWListener
 {
-public :
-    virtual ~AutoBWListener() {}
-    virtual void BWChanged (double redbw, double greenbw, double bluebw) {}
-
+public:
+    virtual ~AutoBWListener() = default;
+    virtual void BWChanged(double redbw, double greenbw, double bluebw) = 0;
 };
 
 class AutoWBListener
 {
-public :
+public:
     virtual ~AutoWBListener() = default;
-    virtual void WBChanged (double temp, double green) = 0;
+    virtual void WBChanged(double temp, double green) = 0;
 };
 
 class FrameCountListener
 {
-public :
+public:
     virtual ~FrameCountListener() = default;
-    virtual void FrameCountChanged (int n, int frameNum) = 0;
+    virtual void FrameCountChanged(int n, int frameNum) = 0;
 };
 
 class ImageTypeListener
 {
-public :
+public:
     virtual ~ImageTypeListener() = default;
-    virtual void imageTypeChanged (bool isRaw, bool isBayer, bool isXtrans, bool is_Mono = false) = 0;
+    virtual void imageTypeChanged(bool isRaw, bool isBayer, bool isXtrans, bool is_Mono = false) = 0;
 };
 
 class WaveletListener
 {
-public :
-    virtual ~WaveletListener() {}
-    virtual void wavChanged (double nlevel) {}
+public:
+    virtual ~WaveletListener() = default;
+    virtual void wavChanged(double nlevel) = 0;
 
 };
 
-
 /** This class represents a detailed part of the image (looking through a kind of window).
   * It can be created and destroyed with the appropriate members of StagedImageProcessor.
   * Several crops can be assigned to the same image.   */
@@ -554,8 +566,7 @@ public:
                    * there is no jobs left.
                    * @param img is the result of the last ProcessingJob
                    * @return the next ProcessingJob to process */
-    virtual ProcessingJob* imageReady (IImagefloat* img) = 0;
-    virtual void error (Glib::ustring message) = 0;
+    virtual ProcessingJob* imageReady(IImagefloat* img) = 0;
 };
 /** This function performs all the image processing steps corresponding to the given ProcessingJob. It runs in the background, thus it returns immediately,
    * When it finishes, it calls the BatchProcessingListener with the resulting image and asks for the next job. It the listener gives a new job, it goes on

rtengine/rtetest.cc

@@ -21,23 +21,28 @@
 //#include <giomm.h>
 #include <helpers.h>
 
-class PListener : public rtengine::ProgressListener
+class PListener :
+    public rtengine::ProgressListener
 {
-
 public:
-    void setProgressStr (Glib::ustring str)
+    void setProgressStr(const Glib::ustring& str)
     {
         std::cout << str << std::endl;
     }
-    void setProgress (double p)
+    void setProgress(double p)
     {
         std::cout << p << std::endl;
     }
+    void setProgressState(bool inProcessing)
+    {
+    }
+    void error(const Glib::ustring& descr)
+    {
+    }
 };
 
 int main (int argc, char* argv[])
 {
-
     if (argc < 4) {
         std::cout << "Usage: rtcmd <infile> <paramfile> <outfile>" << std::endl;
         exit(1);

rtgui/adjuster.h

@@ -24,13 +24,13 @@
 #include "guiutils.h"
 
 class Adjuster;
+
 class AdjusterListener
 {
-
 public:
-    virtual ~AdjusterListener() {};
-    virtual void adjusterChanged (Adjuster* a, double newval) {}
-    virtual void adjusterAutoToggled (Adjuster* a, bool newval) {}
+    virtual ~AdjusterListener() = default;
+    virtual void adjusterChanged (Adjuster* a, double newval) = 0;
+    virtual void adjusterAutoToggled (Adjuster* a, bool newval) = 0;
 };
 
 typedef double(*double2double_fun)(double val);

rtgui/batchqueue.cc

@@ -39,6 +39,27 @@
 using namespace std;
 using namespace rtengine;
 
+namespace
+{
+
+struct NLParams {
+    BatchQueueListener* listener;
+    int qsize;
+    bool queueEmptied;
+    bool queueError;
+    Glib::ustring queueErrorMessage;
+};
+
+int bqnotifylistenerUI (void* data)
+{
+    NLParams* params = static_cast<NLParams*>(data);
+    params->listener->queueSizeChanged (params->qsize, params->queueEmptied, params->queueError, params->queueErrorMessage);
+    delete params;
+    return 0;
+}
+
+}
+
 BatchQueue::BatchQueue (FileCatalog* aFileCatalog) : processing(nullptr), fileCatalog(aFileCatalog), sequence(0), listener(nullptr)
 {
 
@@ -580,9 +601,54 @@ void BatchQueue::startProcessing ()
     }
 }
 
-rtengine::ProcessingJob* BatchQueue::imageReady (rtengine::IImagefloat* img)
+void BatchQueue::setProgress(double p)
 {
+    if (processing) {
+        processing->progress = p;
+    }
 
+    // No need to acquire the GUI, setProgressUI will do it
+    const auto func = [](gpointer data) -> gboolean {
+        static_cast<BatchQueue*>(data)->redraw();
+        return FALSE;
+    };
+
+    idle_register.add(func, this);
+}
+
+void BatchQueue::setProgressStr(const Glib::ustring& str)
+{
+}
+
+void BatchQueue::setProgressState(bool inProcessing)
+{
+}
+
+void BatchQueue::error(const Glib::ustring& descr)
+{
+    if (processing && processing->processing) {
+        // restore failed thumb
+        BatchQueueButtonSet* bqbs = new BatchQueueButtonSet (processing);
+        bqbs->setButtonListener (this);
+        processing->addButtonSet (bqbs);
+        processing->processing = false;
+        processing->job = rtengine::ProcessingJob::create(processing->filename, processing->thumbnail->getType() == FT_Raw, processing->params);
+        processing = nullptr;
+        redraw ();
+    }
+
+    if (listener) {
+        NLParams* params = new NLParams;
+        params->listener = listener;
+        params->queueEmptied = false;
+        params->queueError = true;
+        params->queueErrorMessage = descr;
+        idle_register.add(bqnotifylistenerUI, params);
+    }
+}
+
+rtengine::ProcessingJob* BatchQueue::imageReady(rtengine::IImagefloat* img)
+{
     // save image img
     Glib::ustring fname;
     SaveFormat saveFormat;
@@ -892,22 +958,6 @@ Glib::ustring BatchQueue::autoCompleteFileName (const Glib::ustring& fileName, c
     return "";
 }
 
-void BatchQueue::setProgress (double p)
-{
-
-    if (processing) {
-        processing->progress = p;
-    }
-
-    // No need to acquire the GUI, setProgressUI will do it
-    const auto func = [](gpointer data) -> gboolean {
-        static_cast<BatchQueue*>(data)->redraw();
-        return FALSE;
-    };
-
-    idle_register.add(func, this);
-}
-
 void BatchQueue::buttonPressed (LWButton* button, int actionCode, void* actionData)
 {
 
@@ -923,22 +973,6 @@ void BatchQueue::buttonPressed (LWButton* button, int actionCode, void* actionDa
     }
 }
 
-struct NLParams {
-    BatchQueueListener* listener;
-    int qsize;
-    bool queueEmptied;
-    bool queueError;
-    Glib::ustring queueErrorMessage;
-};
-
-int bqnotifylistenerUI (void* data)
-{
-    NLParams* params = static_cast<NLParams*>(data);
-    params->listener->queueSizeChanged (params->qsize, params->queueEmptied, params->queueError, params->queueErrorMessage);
-    delete params;
-    return 0;
-}
-
 void BatchQueue::notifyListener (bool queueEmptied)
 {
 
@@ -960,27 +994,3 @@ void BatchQueue::redrawNeeded (LWButton* button)
     GThreadLock lock;
     queue_draw ();
 }
-
-void BatchQueue::error (Glib::ustring msg)
-{
-
-    if (processing && processing->processing) {
-        // restore failed thumb
-        BatchQueueButtonSet* bqbs = new BatchQueueButtonSet (processing);
-        bqbs->setButtonListener (this);
-        processing->addButtonSet (bqbs);
-        processing->processing = false;
-        processing->job = rtengine::ProcessingJob::create(processing->filename, processing->thumbnail->getType() == FT_Raw, processing->params);
-        processing = nullptr;
-        redraw ();
-    }
-
-    if (listener) {
-        NLParams* params = new NLParams;
-        params->listener = listener;
-        params->queueEmptied = false;
-        params->queueError = true;
-        params->queueErrorMessage = msg;
-        idle_register.add(bqnotifylistenerUI, params);
-    }
-}

rtgui/batchqueue.h

@@ -30,9 +30,9 @@ class BatchQueueListener
 {
 
 public:
-    virtual ~BatchQueueListener () {}
-    virtual void queueSizeChanged     (int qsize, bool queueEmptied, bool queueError, Glib::ustring queueErrorMessage) = 0;
-    virtual bool canStartNext         () = 0;
+    virtual ~BatchQueueListener() = default;
+    virtual void queueSizeChanged(int qsize, bool queueEmptied, bool queueError, const Glib::ustring& queueErrorMessage) = 0;
+    virtual bool canStartNext() = 0;
 };
 
 class FileCatalog;
@@ -62,9 +62,12 @@ public:
         return (!fd.empty());
     }
 
-    rtengine::ProcessingJob* imageReady (rtengine::IImagefloat* img);
-    void error (Glib::ustring msg);
-    void setProgress (double p);
+    void setProgress(double p);
+    void setProgressStr(const Glib::ustring& str);
+    void setProgressState(bool inProcessing);
+    void error(const Glib::ustring& descr);
+    rtengine::ProcessingJob* imageReady(rtengine::IImagefloat* img);
+
     void rightClicked (ThumbBrowserEntryBase* entry);
     void doubleClicked (ThumbBrowserEntryBase* entry);
     bool keyPressed (GdkEventKey* event);

rtgui/batchqueuepanel.cc

@@ -245,9 +245,9 @@ void BatchQueuePanel::updateTab (int qsize, int forceOrientation)
     }
 }
 
-void BatchQueuePanel::queueSizeChanged (int qsize, bool queueEmptied, bool queueError, Glib::ustring queueErrorMessage)
+void BatchQueuePanel::queueSizeChanged(int qsize, bool queueEmptied, bool queueError, const Glib::ustring& queueErrorMessage)
 {
-    updateTab ( qsize);
+    updateTab (qsize);
 
     if (qsize == 0 || (qsize == 1 && !fdir->get_sensitive())) {
         qStartStop->set_sensitive(false);
@@ -311,10 +311,9 @@ void BatchQueuePanel::stopBatchProc ()
     updateTab (batchQueue->getEntries().size());
 }
 
-void BatchQueuePanel::addBatchQueueJobs ( std::vector<BatchQueueEntry*> &entries, bool head)
+void BatchQueuePanel::addBatchQueueJobs(const std::vector<BatchQueueEntry*>& entries, bool head)
 {
-
-    batchQueue->addEntries (entries, head);
+    batchQueue->addEntries(entries, head);
 
     if (!qStartStop->get_active() && qAutoStart->get_active()) {
         startBatchProc ();

rtgui/batchqueuepanel.h

@@ -59,11 +59,11 @@ public:
 
     void init (RTWindow* parent);
 
-    void addBatchQueueJobs (std::vector<BatchQueueEntry*> &entries , bool head = false);
+    void addBatchQueueJobs(const std::vector<BatchQueueEntry*>& entries , bool head = false);
 
     // batchqueuelistener interface
-    void queueSizeChanged     (int qsize, bool queueEmptied, bool queueError, Glib::ustring queueErrorMessage);
-    bool canStartNext         ();
+    void queueSizeChanged(int qsize, bool queueEmptied, bool queueError, const Glib::ustring& queueErrorMessage);
+    bool canStartNext();
 
     void startBatchProc ();
     void stopBatchProc ();

rtgui/bayerpreprocess.cc

@@ -134,6 +134,10 @@ void BayerPreProcess::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void BayerPreProcess::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void BayerPreProcess::setBatchMode(bool batchMode)
 {
     ToolPanel::setBatchMode (batchMode);

rtgui/bayerpreprocess.h

@@ -46,7 +46,9 @@ public:
     void setBatchMode   (bool batchMode);
     void setDefaults    (const rtengine::procparams::ProcParams* defParams, const ParamsEdited* pedited = nullptr);
 
-    void adjusterChanged     (Adjuster* a, double newval);
+    void adjusterChanged(Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
+
     void hotDeadPixelChanged();
     void setAdjusterBehavior (bool linedenoiseadd, bool greenequiladd);
     void trimValues          (rtengine::procparams::ProcParams* pp);

rtgui/bayerprocess.cc

@@ -539,6 +539,10 @@ void BayerProcess::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void BayerProcess::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void BayerProcess::methodChanged ()
 {
     const int currentSelection = method->get_active_row_number();

rtgui/bayerprocess.h

@@ -80,6 +80,7 @@ public:
     void methodChanged();
     void imageNumberChanged();
     void adjusterChanged(Adjuster* a, double newval);
+    void adjusterAutoToggled (Adjuster* a, bool newval);
     void checkBoxToggled(CheckBox* c, CheckValue newval);
     void pixelShiftMotionMethodChanged();
     void pixelShiftDemosaicMethodChanged();

rtgui/bayerrawexposure.cc

@@ -121,7 +121,7 @@ void BayerRAWExposure::write( rtengine::procparams::ProcParams* pp, ParamsEdited
 
 }
 
-void BayerRAWExposure::adjusterChanged (Adjuster* a, double newval)
+void BayerRAWExposure::adjusterChanged(Adjuster* a, double newval)
 {
     if (listener) {
         Glib::ustring value = a->getTextValue();
@@ -148,6 +148,10 @@ void BayerRAWExposure::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void BayerRAWExposure::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void BayerRAWExposure::checkBoxToggled (CheckBox* c, CheckValue newval)
 {
     if (c == PextwoGreen) {

rtgui/bayerrawexposure.h

@@ -43,6 +43,7 @@ public:
     void setBatchMode   (bool batchMode);
     void setDefaults    (const rtengine::procparams::ProcParams* defParams, const ParamsEdited* pedited = nullptr);
     void adjusterChanged     (Adjuster* a, double newval);
+    void adjusterAutoToggled (Adjuster* a, bool newval);
     void checkBoxToggled     (CheckBox* c, CheckValue newval);
     void setAdjusterBehavior (bool pexblackadd);
     void trimValues          (rtengine::procparams::ProcParams* pp);

rtgui/blackwhite.cc

@@ -1094,9 +1094,8 @@ void BlackWhite::autoch_toggled ()
 
 }
 
-void BlackWhite::adjusterChanged (Adjuster* a, double newval)
+void BlackWhite::adjusterChanged(Adjuster* a, double newval)
 {
-
     // Checking "listener" to avoid "autoch" getting toggled off because it has to change the sliders when toggling on
     if (listener && (a == mixerRed || a == mixerGreen || a == mixerBlue || a == mixerOrange || a == mixerYellow || a == mixerMagenta || a == mixerPurple || a == mixerCyan) ) {
         if (multiImage && autoch->get_inconsistent()) {
@@ -1147,6 +1146,10 @@ void BlackWhite::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void BlackWhite::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void BlackWhite::updateRGBLabel ()
 {
     if (!batchMode) {

rtgui/blackwhite.h

@@ -53,6 +53,7 @@ public:
 
     void updateRGBLabel      ();
     void adjusterChanged     (Adjuster* a, double newval);
+    void adjusterAutoToggled (Adjuster* a, bool newval);
     void setAdjusterBehavior (bool bwadd, bool bwgadd);
     void trimValues          (rtengine::procparams::ProcParams* pp);
     void enabledcc_toggled   ();

rtgui/bqentryupdater.h

@@ -28,8 +28,8 @@ class BQEntryUpdateListener
 {
 
 public:
-    virtual ~BQEntryUpdateListener () {}
-    virtual void updateImage (guint8* img, int w, int h, int origw, int origh, guint8* newOPreview) {}
+    virtual ~BQEntryUpdateListener() = default;
+    virtual void updateImage(guint8* img, int w, int h, int origw, int origh, guint8* newOPreview) = 0;
 };
 
 class BatchQueueEntryUpdater

rtgui/cacorrection.cc

@@ -97,6 +97,10 @@ void CACorrection::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void CACorrection::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void CACorrection::setAdjusterBehavior (bool badd)
 {
 

rtgui/cacorrection.h

@@ -40,6 +40,7 @@ public:
     void setBatchMode   (bool batchMode);
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void setAdjusterBehavior (bool badd);
     void trimValues          (rtengine::procparams::ProcParams* pp);
 };

rtgui/checkbox.h

@@ -33,10 +33,9 @@ enum class CheckValue {
 
 class CheckBoxListener
 {
-
 public:
-    virtual ~CheckBoxListener() {};
-    virtual void checkBoxToggled (CheckBox* c, CheckValue newval) {}
+    virtual ~CheckBoxListener() = default;
+    virtual void checkBoxToggled(CheckBox* c, CheckValue newval) = 0;
 };
 
 

rtgui/chmixer.cc

@@ -167,7 +167,7 @@ void ChMixer::setDefaults (const ProcParams* defParams, const ParamsEdited* pedi
         }
 }
 
-void ChMixer::adjusterChanged (Adjuster* a, double newval)
+void ChMixer::adjusterChanged(Adjuster* a, double newval)
 {
 
     if (listener && getEnabled()) {
@@ -179,6 +179,9 @@ void ChMixer::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void ChMixer::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
 
 void ChMixer::enabledChanged()
 {

rtgui/chmixer.h

@@ -42,6 +42,7 @@ public:
     void setBatchMode    (bool batchMode);
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void setAdjusterBehavior (bool rgbadd);
     void trimValues          (rtengine::procparams::ProcParams* pp);
     void enabledChanged();

rtgui/colorappearance.cc

@@ -1544,9 +1544,8 @@ void ColorAppearance::colorForValue (double valX, double valY, enum ColorCaller:
     caller->ccBlue = double (B);
 }
 
-void ColorAppearance::adjusterChanged (Adjuster* a, double newval)
+void ColorAppearance::adjusterChanged(Adjuster* a, double newval)
 {
-
     if (listener && (multiImage || getEnabled()) ) {
         if (a == degree) {
             listener->panelChanged (EvCATDegree, a->getTextValue());
@@ -1594,9 +1593,8 @@ void ColorAppearance::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
-void ColorAppearance::adjusterAutoToggled (Adjuster* a, bool newval)
+void ColorAppearance::adjusterAutoToggled(Adjuster* a, bool newval)
 {
-
     if (multiImage) {
         if (degree->getAutoInconsistent()) {
             degree->setAutoInconsistent (false);
@@ -1844,11 +1842,21 @@ void ColorAppearance::setBatchMode (bool batchMode)
     curveEditorG3->setBatchMode (batchMode);
 }
 
-void ColorAppearance::updateCurveBackgroundHistogram (LUTu & histToneCurve, LUTu & histLCurve, LUTu & histCCurve,/* LUTu & histCLurve, LUTu & histLLCurve,*/ LUTu & histLCAM,  LUTu & histCCAM, LUTu & histRed, LUTu & histGreen, LUTu & histBlue, LUTu & histLuma, LUTu & histLRETI)
+void ColorAppearance::updateCurveBackgroundHistogram(
+    const LUTu& histToneCurve,
+    const LUTu& histLCurve,
+    const LUTu& histCCurve,
+    const LUTu& histLCAM,
+    const LUTu& histCCAM,
+    const LUTu& histRed,
+    const LUTu& histGreen,
+    const LUTu& histBlue,
+    const LUTu& histLuma,
+    const LUTu& histLRETI
+)
 {
-
-    shape->updateBackgroundHistogram (histLCAM);
-    shape3->updateBackgroundHistogram (histCCAM);
+    shape->updateBackgroundHistogram(histLCAM);
+    shape3->updateBackgroundHistogram(histCCAM);
 }
 
 

rtgui/colorappearance.h

@@ -80,7 +80,18 @@ public:
 
     void setAdjusterBehavior (bool degreeadd, bool adapscenadd, bool adaplumadd, bool badpixsladd, bool jlightadd, bool chromaadd, bool contrastadd, bool rstprotectionadd, bool qbrightadd, bool qcontrastadd, bool schromaadd, bool mchromaadd, bool colorhadd);
     void trimValues          (rtengine::procparams::ProcParams* pp);
-    void updateCurveBackgroundHistogram (LUTu & histToneCurve, LUTu & histLCurve, LUTu & histCCurve,/* LUTu & histCLurve, LUTu & histLLCurve,*/ LUTu & histLCAM, LUTu & histCCAM, LUTu & histRed, LUTu & histGreen, LUTu & histBlue, LUTu & histLuma, LUTu & histLRETI);
+    void updateCurveBackgroundHistogram(
+        const LUTu& histToneCurve,
+        const LUTu& histLCurve,
+        const LUTu& histCCurve,
+        const LUTu& histLCAM,
+        const LUTu& histCCAM,
+        const LUTu& histRed,
+        const LUTu& histGreen,
+        const LUTu& histBlue,
+        const LUTu& histLuma,
+        const LUTu& histLRETI
+    );
     virtual void colorForValue (double valX, double valY, enum ColorCaller::ElemType elemType, int callerId, ColorCaller *caller);
     void updateToolState (std::vector<int> &tpOpen);
     void writeOptions (std::vector<int> &tpOpen);

rtgui/colortoning.cc

@@ -318,7 +318,7 @@ ColorToning::ColorToning () : FoldableToolPanel(this, "colortoning", M("TP_COLOR
 
     //------------------------------------------------------------------------
     // LAB grid
-    auto m = ProcEventMapper::getInstance();    
+    auto m = ProcEventMapper::getInstance();
     EvColorToningLabGridValue = m->newEvent(RGBCURVE, "HISTORY_MSG_COLORTONING_LABGRID_VALUE");
     labgridBox = Gtk::manage(new Gtk::HBox());
     labgrid = Gtk::manage(new LabGrid(EvColorToningLabGridValue));
@@ -688,13 +688,6 @@ void ColorToning::setAdjusterBehavior (bool splitAdd, bool satThresholdAdd, bool
 
 }
 
-void ColorToning::adjusterChanged (ThresholdAdjuster* a, double newBottom, double newTop)
-{
-    if (listener && getEnabled())
-        listener->panelChanged (a == hlColSat ? EvColorToningHighights : EvColorToningShadows,
-                                Glib::ustring::compose(Glib::ustring(M("TP_COLORTONING_HUE") + ": %1" + "\n" + M("TP_COLORTONING_STRENGTH") + ": %2"), int(newTop), int(newBottom)));
-}
-
 void ColorToning::autoColorTonChanged(int bwct, int satthres, int satprot)
 {
     nextbw = bwct;
@@ -731,40 +724,32 @@ bool ColorToning::CTComp_ ()
     return false;
 }
 
-void ColorToning::adjusterChanged (Adjuster* a, double newval)
+void ColorToning::adjusterChanged (ThresholdAdjuster* a, double newBottom, double newTop)
 {
-
-    if (!listener || !getEnabled()) {
-        return;
+    if (listener && getEnabled()) {
+        listener->panelChanged(
+            a == hlColSat
+                ? EvColorToningHighights
+                : EvColorToningShadows,
+            Glib::ustring::compose(Glib::ustring(M("TP_COLORTONING_HUE") + ": %1" + "\n" + M("TP_COLORTONING_STRENGTH") + ": %2"), int(newTop), int(newBottom))
+        );
     }
+}
 
-    if (a == redlow) {
-        listener->panelChanged (EvColorToningredlow, redlow->getTextValue());
-    } else if (a == greenlow) {
-        listener->panelChanged (EvColorToninggreenlow, greenlow->getTextValue());
-    } else if (a == bluelow) {
-        listener->panelChanged (EvColorToningbluelow, bluelow->getTextValue());
-    } else if (a == redmed) {
-        listener->panelChanged (EvColorToningredmed, redmed->getTextValue());
-    } else if (a == greenmed) {
-        listener->panelChanged (EvColorToninggreenmed, greenmed->getTextValue());
-    } else if (a == bluemed) {
-        listener->panelChanged (EvColorToningbluemed, bluemed->getTextValue());
-    } else if (a == redhigh) {
-        listener->panelChanged (EvColorToningredhigh, redhigh->getTextValue());
-    } else if (a == greenhigh) {
-        listener->panelChanged (EvColorToninggreenhigh, greenhigh->getTextValue());
-    } else if (a == bluehigh) {
-        listener->panelChanged (EvColorToningbluehigh, bluehigh->getTextValue());
-    } else if (a == balance) {
-        listener->panelChanged (EvColorToningbalance, balance->getTextValue());
-    } else if (a == satProtectionThreshold) {
-        listener->panelChanged (EvColorToningSatThreshold, a->getTextValue());
-    } else if (a == saturatedOpacity) {
-        listener->panelChanged (EvColorToningSatProtection, a->getTextValue());
-    } else if (a == strength) {
-        listener->panelChanged (EvColorToningStrength, a->getTextValue());
-    }
+void ColorToning::adjusterChanged(ThresholdAdjuster* a, double newBottomLeft, double newTopLeft, double newBottomRight, double newTopRight)
+{
+}
+
+void ColorToning::adjusterChanged(ThresholdAdjuster* a, int newBottom, int newTop)
+{
+}
+
+void ColorToning::adjusterChanged(ThresholdAdjuster* a, int newBottomLeft, int newTopLeft, int newBottomRight, int newTopRight)
+{
+}
+
+void ColorToning::adjusterChanged2(ThresholdAdjuster* a, int newBottomL, int newTopL, int newBottomR, int newTopR)
+{
 }
 
 //Two Color changed
@@ -829,7 +814,7 @@ void ColorToning::methodChanged ()
 
     if (!batchMode) {
         labgridBox->hide();
-        
+
         if (method->get_active_row_number() == 0) { // Lab
             colorSep->show();
             colorCurveEditorG->show();
@@ -1141,6 +1126,45 @@ void ColorToning::trimValues (rtengine::procparams::ProcParams* pp)
     bluehigh->trimValue(pp->colorToning.bluehigh);
 }
 
+void ColorToning::adjusterChanged(Adjuster* a, double newval)
+{
+    if (!listener || !getEnabled()) {
+        return;
+    }
+
+    if (a == redlow) {
+        listener->panelChanged (EvColorToningredlow, redlow->getTextValue());
+    } else if (a == greenlow) {
+        listener->panelChanged (EvColorToninggreenlow, greenlow->getTextValue());
+    } else if (a == bluelow) {
+        listener->panelChanged (EvColorToningbluelow, bluelow->getTextValue());
+    } else if (a == redmed) {
+        listener->panelChanged (EvColorToningredmed, redmed->getTextValue());
+    } else if (a == greenmed) {
+        listener->panelChanged (EvColorToninggreenmed, greenmed->getTextValue());
+    } else if (a == bluemed) {
+        listener->panelChanged (EvColorToningbluemed, bluemed->getTextValue());
+    } else if (a == redhigh) {
+        listener->panelChanged (EvColorToningredhigh, redhigh->getTextValue());
+    } else if (a == greenhigh) {
+        listener->panelChanged (EvColorToninggreenhigh, greenhigh->getTextValue());
+    } else if (a == bluehigh) {
+        listener->panelChanged (EvColorToningbluehigh, bluehigh->getTextValue());
+    } else if (a == balance) {
+        listener->panelChanged (EvColorToningbalance, balance->getTextValue());
+    } else if (a == satProtectionThreshold) {
+        listener->panelChanged (EvColorToningSatThreshold, a->getTextValue());
+    } else if (a == saturatedOpacity) {
+        listener->panelChanged (EvColorToningSatProtection, a->getTextValue());
+    } else if (a == strength) {
+        listener->panelChanged (EvColorToningStrength, a->getTextValue());
+    }
+}
+
+void ColorToning::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void ColorToning::setBatchMode (bool batchMode)
 {
     ToolPanel::setBatchMode (batchMode);

rtgui/colortoning.h

@@ -32,13 +32,19 @@ public:
     void setDefaults           (const rtengine::procparams::ProcParams* defParams, const ParamsEdited* pedited = nullptr);
     void trimValues            (rtengine::procparams::ProcParams* pp);
     void adjusterChanged       (Adjuster* a, double newval);
-    void adjusterChanged       (ThresholdAdjuster* a, double newBottom, double newTop);
+    void adjusterAutoToggled   (Adjuster* a, bool newval);
     void setAdjusterBehavior   (bool splitAdd, bool satThresholdAdd, bool satOpacityAdd, bool strprotectAdd, bool balanceAdd);
     void neutral_pressed       ();
     //void neutralCurves_pressed ();
     void autoColorTonChanged   (int bwct, int satthres, int satprot);
     bool CTComp_               ();
 
+    void adjusterChanged(ThresholdAdjuster* a, double newBottom, double newTop);
+    void adjusterChanged(ThresholdAdjuster* a, double newBottomLeft, double newTopLeft, double newBottomRight, double newTopRight);
+    void adjusterChanged(ThresholdAdjuster* a, int newBottom, int newTop);
+    void adjusterChanged(ThresholdAdjuster* a, int newBottomLeft, int newTopLeft, int newBottomRight, int newTopRight);
+    void adjusterChanged2(ThresholdAdjuster* a, int newBottomL, int newTopL, int newBottomR, int newTopR);
+
     void enabledChanged        ();
     void curveChanged          (CurveEditor* ce);
     void autosatChanged        ();
@@ -51,7 +57,7 @@ public:
     void colorForValue         (double valX, double valY, enum ColorCaller::ElemType elemType, int callerId, ColorCaller* caller);
 
     void setListener(ToolPanelListener *tpl);
-    
+
 private:
     bool resetPressed(GdkEventButton* event);
 

rtgui/crop.cc

@@ -728,7 +728,7 @@ void Crop::setDimensions (int mw, int mh)
     refreshSize ();
 }
 
-void Crop::sizeChanged (int x, int y, int ow, int oh)
+void Crop::sizeChanged(int x, int y, int ow, int oh)
 {
     struct Params {
         Crop* crop;
@@ -1261,9 +1261,8 @@ void Crop::cropManipReady ()
     idle_register.add(notifyListenerUI, this);
 }
 
-double Crop::getRatio ()
+double Crop::getRatio () const
 {
-
     double r = -1.0;
 
     if (!fixr->get_active()) {

rtgui/crop.h

@@ -76,7 +76,7 @@ public:
     void cropResized        (int &x, int &y, int& x2, int& y2);
     void cropManipReady     ();
     bool inImageArea        (int x, int y);
-    double getRatio         ();
+    double getRatio         () const;
 
     void setCropPanelListener (CropPanelListener* cl)
     {

rtgui/cropguilistener.h

@@ -23,21 +23,21 @@ class CropGUIListener
 {
 
 public:
-    virtual ~CropGUIListener() {}
-    virtual void cropMoved          (int &x, int &y, int &w, int &h) = 0;
-    virtual void cropWidth1Resized  (int &x, int &y, int &w, int &h, float custom_ratio=0.f) = 0;
-    virtual void cropWidth2Resized  (int &x, int &y, int &w, int &h, float custom_ratio=0.f) = 0;
-    virtual void cropHeight1Resized (int &x, int &y, int &w, int &h, float custom_ratio=0.f) = 0;
-    virtual void cropHeight2Resized (int &x, int &y, int &w, int &h, float custom_ratio=0.f) = 0;
-    virtual void cropTopLeftResized     (int &x, int &y, int &w, int &h, float custom_ratio=0.f) = 0;
-    virtual void cropTopRightResized    (int &x, int &y, int &w, int &h, float custom_ratio=0.f) = 0;
-    virtual void cropBottomLeftResized  (int &x, int &y, int &w, int &h, float custom_ratio=0.f) = 0;
-    virtual void cropBottomRightResized (int &x, int &y, int &w, int &h, float custom_ratio=0.f) = 0;
-    virtual void cropInit           (int &x, int &y, int &w, int &h) = 0;
-    virtual void cropResized        (int &x, int &y, int& x2, int& y2) = 0;
-    virtual void cropManipReady     () = 0;
-    virtual bool inImageArea        (int x, int y) = 0;
-    virtual double getRatio         () = 0;
+    virtual ~CropGUIListener() = default;
+    virtual void cropMoved(int &x, int &y, int &w, int &h) = 0;
+    virtual void cropWidth1Resized(int &x, int &y, int &w, int &h, float custom_ratio = 0.f) = 0;
+    virtual void cropWidth2Resized(int &x, int &y, int &w, int &h, float custom_ratio = 0.f) = 0;
+    virtual void cropHeight1Resized(int &x, int &y, int &w, int &h, float custom_ratio = 0.f) = 0;
+    virtual void cropHeight2Resized(int &x, int &y, int &w, int &h, float custom_ratio = 0.f) = 0;
+    virtual void cropTopLeftResized(int &x, int &y, int &w, int &h, float custom_ratio = 0.f) = 0;
+    virtual void cropTopRightResized(int &x, int &y, int &w, int &h, float custom_ratio = 0.f) = 0;
+    virtual void cropBottomLeftResized(int &x, int &y, int &w, int &h, float custom_ratio = 0.f) = 0;
+    virtual void cropBottomRightResized(int &x, int &y, int &w, int &h, float custom_ratio = 0.f) = 0;
+    virtual void cropInit(int &x, int &y, int &w, int &h) = 0;
+    virtual void cropResized(int &x, int &y, int& x2, int& y2) = 0;
+    virtual void cropManipReady() = 0;
+    virtual bool inImageArea(int x, int y) = 0;
+    virtual double getRatio() const = 0;
 };
 
 #endif

rtgui/crophandler.cc

@@ -106,15 +106,9 @@ void CropHandler::newImage (StagedImageProcessor* ipc_, bool isDetailWindow)
     initial = true;
 }
 
-void CropHandler::sizeChanged (int x, int y, int ow, int oh)    // the ipc notifies it to keep track size changes like rotation
+void CropHandler::sizeChanged(int x, int y, int ow, int oh)    // the ipc notifies it to keep track size changes like rotation
 {
-
     compDim ();
-
-// this should be put into an idle source!!!
-    /*    if (listener)
-            listener->cropWindowChanged ();
-        */
 }
 
 bool CropHandler::isFullDisplay ()
@@ -300,10 +294,18 @@ void CropHandler::getPosition (int& x, int& y)
 }
 
 
-void CropHandler::setDetailedCrop (IImage8* im, IImage8* imtrue, rtengine::procparams::ColorManagementParams cmp,
-                                   rtengine::procparams::CropParams cp, int ax, int ay, int aw, int ah, int askip)
+void CropHandler::setDetailedCrop(
+    IImage8* im,
+    IImage8* imtrue,
+    const rtengine::procparams::ColorManagementParams& cmp,
+    const rtengine::procparams::CropParams& cp,
+    int ax,
+    int ay,
+    int aw,
+    int ah,
+    int askip
+)
 {
-
     if (!enabled) {
         return;
     }
@@ -406,9 +408,8 @@ void CropHandler::setDetailedCrop (IImage8* im, IImage8* imtrue, rtengine::procp
     cimg.unlock ();
 }
 
-bool CropHandler::getWindow (int& cwx, int& cwy, int& cww, int& cwh, int& cskip)
+void CropHandler::getWindow(int& cwx, int& cwy, int& cww, int& cwh, int& cskip)
 {
-
     cwx = cropX;
     cwy = cropY;
     cww = cropW;
@@ -424,8 +425,6 @@ bool CropHandler::getWindow (int& cwx, int& cwy, int& cww, int& cwh, int& cskip)
     }
 
     cskip = zoom >= 1000 ? 1 : zoom/10;
-
-    return true;
 }
 
 void CropHandler::update ()

rtgui/crophandler.h

@@ -86,9 +86,19 @@ public:
     }
 
     // DetailedCropListener interface
-    void    setDetailedCrop (rtengine::IImage8* im, rtengine::IImage8* imworking, rtengine::procparams::ColorManagementParams cmp,
-                             rtengine::procparams::CropParams cp, int cx, int cy, int cw, int ch, int skip);
-    bool    getWindow (int& cwx, int& cwy, int& cww, int& cwh, int& cskip);
+    void setDetailedCrop(
+        rtengine::IImage8* im,
+        rtengine::IImage8* imworking,
+        const rtengine::procparams::ColorManagementParams& cmp,
+        const rtengine::procparams::CropParams& cp,
+        int cx,
+        int cy,
+        int cw,
+        int ch,
+        int skip
+    );
+    void getWindow(int& cwx, int& cwy, int& cww, int& cwh, int& cskip);
+
     // SizeListener interface
     void    sizeChanged  (int w, int h, int ow, int oh);
 

rtgui/cropwindow.h

@@ -32,15 +32,15 @@
 #include "edit.h"
 
 class CropWindow;
+
 class CropWindowListener
 {
-
 public:
-    virtual ~CropWindowListener() {}
-    virtual void cropPositionChanged   (CropWindow*) {}
-    virtual void cropWindowSizeChanged (CropWindow*) {}
-    virtual void cropZoomChanged       (CropWindow*) {}
-    virtual void initialImageArrived   () {}
+    virtual ~CropWindowListener() = default;
+    virtual void cropPositionChanged(CropWindow*) = 0;
+    virtual void cropWindowSizeChanged(CropWindow*) = 0;
+    virtual void cropZoomChanged(CropWindow*) = 0;
+    virtual void initialImageArrived() = 0;
 };
 
 class ImageArea;

rtgui/curveeditor.cc

@@ -254,7 +254,7 @@ void CurveEditor::setUnChanged (bool uc)
 /*
  * Update the backgrounds histograms
  */
-void CurveEditor::updateBackgroundHistogram (LUTu & hist)
+void CurveEditor::updateBackgroundHistogram(const LUTu& hist)
 {
     // Copy the histogram in the curve editor cache
     if (hist) {
@@ -265,7 +265,7 @@ void CurveEditor::updateBackgroundHistogram (LUTu & hist)
     }
 
     // Then call the curve editor group to eventually update the histogram
-    subGroup->updateBackgroundHistogram (this);
+    subGroup->updateBackgroundHistogram(this);
 }
 
 // Open up the curve if it has modifications and it's not already opened

rtgui/curveeditor.h

@@ -93,7 +93,7 @@ public:
     void curveTypeToggled();
     bool isUnChanged ();
     void setUnChanged (bool uc);
-    void updateBackgroundHistogram (LUTu & hist);
+    void updateBackgroundHistogram(const LUTu& hist);
 
     void setLeftBarColorProvider(ColorProvider* cp, int callerId);
     void setBottomBarColorProvider(ColorProvider* cp, int callerId);

rtgui/defringe.cc

@@ -149,9 +149,8 @@ void Defringe::curveChanged ()
     }
 }
 
-void Defringe::adjusterChanged (Adjuster* a, double newval)
+void Defringe::adjusterChanged(Adjuster* a, double newval)
 {
-
     if (listener && getEnabled()) {
 
         if (a == radius) {
@@ -162,6 +161,10 @@ void Defringe::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void Defringe::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void Defringe::enabledChanged ()
 {
 

rtgui/defringe.h

@@ -50,6 +50,7 @@ public:
     void curveChanged   ();
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged  ();
     virtual void colorForValue (double valX, double valY, enum ColorCaller::ElemType elemType, int callerId, ColorCaller* caller);
 

rtgui/diagonalcurveeditorsubgroup.cc

@@ -1154,14 +1154,17 @@ void DiagonalCurveEditorSubGroup::shcChanged ()
 /*
  * Listener
  */
-void DiagonalCurveEditorSubGroup::adjusterChanged (Adjuster* a, double newval)
+void DiagonalCurveEditorSubGroup::adjusterChanged(Adjuster* a, double newval)
 {
-
     paramCurve->setPoints (getCurveFromGUI(DCT_Parametric));
     storeDisplayedCurve();
     parent->curveChanged ();
 }
 
+void DiagonalCurveEditorSubGroup::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 /*
  * Listener called when the mouse is over a parametric curve's slider
  */

rtgui/diagonalcurveeditorsubgroup.h

@@ -105,6 +105,7 @@ protected:
     const std::vector<double> getCurveFromGUI (int type);
     void shcChanged ();
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     bool adjusterEntered (GdkEventCrossing* ev, int ac);
     bool adjusterLeft (GdkEventCrossing* ev, int ac);
     void setSubGroupRangeLabels(Glib::ustring r1, Glib::ustring r2, Glib::ustring r3, Glib::ustring r4);

rtgui/dirpyrdenoise.cc

@@ -1009,11 +1009,9 @@ void DirPyrDenoise::setDefaults (const ProcParams* defParams, const ParamsEdited
     }
 }
 
-void DirPyrDenoise::adjusterChanged (Adjuster* a, double newval)
+void DirPyrDenoise::adjusterChanged(Adjuster* a, double newval)
 {
-
-    Glib::ustring costr;
-    costr = Glib::ustring::format (std::setw(3), std::fixed, std::setprecision(2), a->getValue());
+    const Glib::ustring costr = Glib::ustring::format (std::setw(3), std::fixed, std::setprecision(2), a->getValue());
 
     if (listener && getEnabled()) {
         if (a == Ldetail) {
@@ -1034,6 +1032,10 @@ void DirPyrDenoise::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void DirPyrDenoise::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void DirPyrDenoise::enabledChanged ()
 {
 

rtgui/dirpyrdenoise.h

@@ -49,6 +49,7 @@ public:
     void autoOpenCurve  ();
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged  ();
     void medianChanged  ();
     void chromaChanged (double autchroma, double autred, double autblue);

rtgui/dirpyrequalizer.cc

@@ -297,13 +297,28 @@ void DirPyrEqualizer::setDefaults (const ProcParams* defParams, const ParamsEdit
     }
 }
 
-void DirPyrEqualizer::adjusterChanged (ThresholdAdjuster* a, int newBottomLeft, int newTopLeft, int newBottomRight, int newTopRight)
+void DirPyrEqualizer::adjusterChanged(ThresholdAdjuster* a, double newBottom, double newTop)
+{
+}
+
+void DirPyrEqualizer::adjusterChanged(ThresholdAdjuster* a, double newBottomLeft, double newTopLeft, double newBottomRight, double newTopRight)
+{
+}
+
+void DirPyrEqualizer::adjusterChanged(ThresholdAdjuster* a, int newBottom, int newTop)
+{
+}
+
+void DirPyrEqualizer::adjusterChanged(ThresholdAdjuster* a, int newBottomLeft, int newTopLeft, int newBottomRight, int newTopRight)
 {
     if (listener && (multiImage || getEnabled()) ) {
         listener->panelChanged (EvDirPyrEqualizerHueskin, hueskin->getHistoryString());
     }
 }
 
+void DirPyrEqualizer::adjusterChanged2(ThresholdAdjuster* a, int newBottomL, int newTopL, int newBottomR, int newTopR)
+{
+}
 
 void DirPyrEqualizer::setBatchMode (bool batchMode)
 {
@@ -330,9 +345,8 @@ void DirPyrEqualizer::cbdlMethodChanged()
 
 
 
-void DirPyrEqualizer::adjusterChanged (Adjuster* a, double newval)
+void DirPyrEqualizer::adjusterChanged(Adjuster* a, double newval)
 {
-
     if (listener && getEnabled()) {
         if (a == threshold) {
             listener->panelChanged (EvDirPyrEqualizerThreshold,
@@ -359,6 +373,10 @@ void DirPyrEqualizer::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void DirPyrEqualizer::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void DirPyrEqualizer::enabledChanged ()
 {
 

rtgui/dirpyrequalizer.h

@@ -63,15 +63,20 @@ public:
     void setBatchMode        (bool batchMode);
     void setAdjusterBehavior (bool multiplieradd, bool thresholdadd, bool skinadd);
     void trimValues          (rtengine::procparams::ProcParams* pp);
-    void adjusterChanged (ThresholdAdjuster* a, int newBottomLeft, int newTopLeft, int newBottomRight, int newTopRight);
-//    void algoChanged         ();
     void cbdlMethodChanged();
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged();
     void gamutlabToggled ();
     void lumaneutralPressed ();
     void lumacontrastPlusPressed ();
     void lumacontrastMinusPressed ();
+
+    void adjusterChanged(ThresholdAdjuster* a, double newBottom, double newTop);
+    void adjusterChanged(ThresholdAdjuster* a, double newBottomLeft, double newTopLeft, double newBottomRight, double newTopRight);
+    void adjusterChanged(ThresholdAdjuster* a, int newBottom, int newTop);
+    void adjusterChanged(ThresholdAdjuster* a, int newBottomLeft, int newTopLeft, int newBottomRight, int newTopRight);
+    void adjusterChanged2(ThresholdAdjuster* a, int newBottomL, int newTopL, int newBottomR, int newTopR);
 };
 
 #endif

rtgui/distortion.cc

@@ -84,14 +84,17 @@ void Distortion::setDefaults (const ProcParams* defParams, const ParamsEdited* p
     }
 }
 
-void Distortion::adjusterChanged (Adjuster* a, double newval)
+void Distortion::adjusterChanged(Adjuster* a, double newval)
 {
-
     if (listener) {
         listener->panelChanged (EvDISTAmount, Glib::ustring::format (std::setw(4), std::fixed, std::setprecision(3), a->getValue()));
     }
 }
 
+void Distortion::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void Distortion::setBatchMode (bool batchMode)
 {
 

rtgui/distortion.h

@@ -43,6 +43,7 @@ public:
     void setBatchMode   (bool batchMode);
 
     void adjusterChanged     (Adjuster* a, double newval);
+    void adjusterAutoToggled (Adjuster* a, bool newval);
     void setAdjusterBehavior (bool vadd);
     void trimValues          (rtengine::procparams::ProcParams* pp);
     void idPressed           ();

rtgui/editorpanel.cc

@@ -1159,7 +1159,12 @@ Glib::ustring EditorPanel::getFileName ()
 }
 
 // TODO!!!
-void EditorPanel::procParamsChanged (rtengine::procparams::ProcParams* params, rtengine::ProcEvent ev, Glib::ustring descr, ParamsEdited* paramsEdited)
+void EditorPanel::procParamsChanged(
+    const rtengine::procparams::ProcParams* params,
+    const rtengine::ProcEvent& ev,
+    const Glib::ustring& descr,
+    const ParamsEdited* paramsEdited
+)
 {
 
 //    if (ev!=EvPhotoLoaded)
@@ -1178,7 +1183,28 @@ void EditorPanel::procParamsChanged (rtengine::procparams::ProcParams* params, r
     info_toggled();
 }
 
-void EditorPanel::setProgressState (bool inProcessing)
+void EditorPanel::clearParamChanges()
+{
+}
+
+void EditorPanel::setProgress(double p)
+{
+    spparams *s = new spparams;
+    s->val = p;
+    s->pProgress = progressLabel;
+    idle_register.add(setprogressStrUI, s);
+}
+
+void EditorPanel::setProgressStr(const Glib::ustring& str)
+{
+    spparams *s = new spparams;
+    s->str = str;
+    s->val = -1;
+    s->pProgress = progressLabel;
+    idle_register.add(setprogressStrUI, s);
+}
+
+void EditorPanel::setProgressState(bool inProcessing)
 {
     struct spsparams {
         bool inProcessing;
@@ -1217,21 +1243,63 @@ void EditorPanel::setProgressState (bool inProcessing)
     idle_register.add (func, p);
 }
 
-void EditorPanel::setProgress (double p)
+void EditorPanel::error(const Glib::ustring& descr)
 {
-    spparams *s = new spparams;
-    s->val = p;
-    s->pProgress = progressLabel;
-    idle_register.add (setprogressStrUI, s);
 }
 
-void EditorPanel::setProgressStr (Glib::ustring str)
+void EditorPanel::error(const Glib::ustring& title, const Glib::ustring& descr)
 {
-    spparams *s = new spparams;
-    s->str = str;
-    s->val = -1;
-    s->pProgress = progressLabel;
-    idle_register.add (setprogressStrUI, s);
+    struct errparams {
+        Glib::ustring descr;
+        Glib::ustring title;
+        EditorPanelIdleHelper* epih;
+    };
+
+    epih->pending++;
+    errparams* const p = new errparams;
+    p->descr = descr;
+    p->title = title;
+    p->epih = epih;
+
+    const auto func = [] (gpointer data) -> gboolean {
+        errparams* const p = static_cast<errparams*> (data);
+
+        if (p->epih->destroyed)
+        {
+            if (p->epih->pending == 1) {
+                delete p->epih;
+            } else {
+                p->epih->pending--;
+            }
+
+            delete p;
+
+            return 0;
+        }
+
+        p->epih->epanel->displayError (p->title, p->descr);
+        p->epih->pending--;
+        delete p;
+
+        return FALSE;
+    };
+
+    idle_register.add (func, p);
+}
+
+void EditorPanel::displayError(const Glib::ustring& title, const Glib::ustring& descr)
+{
+    GtkWidget* msgd = gtk_message_dialog_new_with_markup (nullptr,
+                      GTK_DIALOG_DESTROY_WITH_PARENT,
+                      GTK_MESSAGE_ERROR,
+                      GTK_BUTTONS_OK,
+                      "<b>%s</b>",
+                      descr.data());
+    gtk_window_set_title ((GtkWindow*)msgd, title.data());
+    g_signal_connect_swapped (msgd, "response",
+                              G_CALLBACK (gtk_widget_destroy),
+                              msgd);
+    gtk_widget_show_all (msgd);
 }
 
 // This is only called from the ThreadUI, so within the gtk thread
@@ -1286,61 +1354,6 @@ void EditorPanel::refreshProcessingState (bool inProcessingP)
     setprogressStrUI (s);
 }
 
-void EditorPanel::displayError (Glib::ustring title, Glib::ustring descr)
-{
-    GtkWidget* msgd = gtk_message_dialog_new_with_markup (nullptr,
-                      GTK_DIALOG_DESTROY_WITH_PARENT,
-                      GTK_MESSAGE_ERROR,
-                      GTK_BUTTONS_OK,
-                      "<b>%s</b>",
-                      descr.data());
-    gtk_window_set_title ((GtkWindow*)msgd, title.data());
-    g_signal_connect_swapped (msgd, "response",
-                              G_CALLBACK (gtk_widget_destroy),
-                              msgd);
-    gtk_widget_show_all (msgd);
-}
-
-void EditorPanel::error (Glib::ustring title, Glib::ustring descr)
-{
-    struct errparams {
-        Glib::ustring descr;
-        Glib::ustring title;
-        EditorPanelIdleHelper* epih;
-    };
-
-    epih->pending++;
-    errparams* const p = new errparams;
-    p->descr = descr;
-    p->title = title;
-    p->epih = epih;
-
-    const auto func = [] (gpointer data) -> gboolean {
-        errparams* const p = static_cast<errparams*> (data);
-
-        if (p->epih->destroyed)
-        {
-            if (p->epih->pending == 1) {
-                delete p->epih;
-            } else {
-                p->epih->pending--;
-            }
-
-            delete p;
-
-            return 0;
-        }
-
-        p->epih->epanel->displayError (p->title, p->descr);
-        p->epih->pending--;
-        delete p;
-
-        return FALSE;
-    };
-
-    idle_register.add (func, p);
-}
-
 void EditorPanel::info_toggled ()
 {
 
@@ -2249,15 +2262,28 @@ void EditorPanel::tbBeforeLock_toggled ()
     tbBeforeLock->get_active() ? tbBeforeLock->set_image (*iBeforeLockON) : tbBeforeLock->set_image (*iBeforeLockOFF);
 }
 
-void EditorPanel::histogramChanged (LUTu & histRed, LUTu & histGreen, LUTu & histBlue, LUTu & histLuma, LUTu & histToneCurve, LUTu & histLCurve, LUTu & histCCurve, /*LUTu & histCLurve, LUTu & histLLCurve,*/ LUTu & histLCAM, LUTu & histCCAM,
-                                    LUTu & histRedRaw, LUTu & histGreenRaw, LUTu & histBlueRaw, LUTu & histChroma, LUTu & histLRETI)
+void EditorPanel::histogramChanged(
+    const LUTu& histRed,
+    const LUTu& histGreen,
+    const LUTu& histBlue,
+    const LUTu& histLuma,
+    const LUTu& histToneCurve,
+    const LUTu& histLCurve,
+    const LUTu& histCCurve,
+    const LUTu& histLCAM,
+    const LUTu& histCCAM,
+    const LUTu& histRedRaw,
+    const LUTu& histGreenRaw,
+    const LUTu& histBlueRaw,
+    const LUTu& histChroma,
+    const LUTu& histLRETI
+)
 {
-
     if (histogramPanel) {
-        histogramPanel->histogramChanged (histRed, histGreen, histBlue, histLuma, histChroma, histRedRaw, histGreenRaw, histBlueRaw);
+        histogramPanel->histogramChanged(histRed, histGreen, histBlue, histLuma, histChroma, histRedRaw, histGreenRaw, histBlueRaw);
     }
 
-    tpc->updateCurveBackgroundHistogram (histToneCurve, histLCurve, histCCurve,/*histCLurve,  histLLCurve,*/ histLCAM, histCCAM, histRed, histGreen, histBlue, histLuma, histLRETI);
+    tpc->updateCurveBackgroundHistogram(histToneCurve, histLCurve, histCCurve, histLCAM, histCCAM, histRed, histGreen, histBlue, histLuma, histLRETI);
 }
 
 bool EditorPanel::CheckSidePanelsVisibility()

rtgui/editorpanel.h

@@ -45,13 +45,14 @@ struct EditorPanelIdleHelper {
 };
 
 class RTWindow;
+
 class EditorPanel final :
-        public Gtk::VBox,
-        public PParamsChangeListener,
-        public rtengine::ProgressListener,
-        public ThumbnailListener,
-        public HistoryBeforeLineListener,
-        public rtengine::HistogramListener
+    public Gtk::VBox,
+    public PParamsChangeListener,
+    public rtengine::ProgressListener,
+    public ThumbnailListener,
+    public HistoryBeforeLineListener,
+    public rtengine::HistogramListener
 {
 public:
     explicit EditorPanel (FilePanel* filePanel = nullptr);
@@ -81,16 +82,24 @@ public:
     {
         return realized;
     }
-    // progresslistener interface
-    void setProgress (double p);
-    void setProgressStr (Glib::ustring str);
-    void setProgressState (bool inProcessing);
-    void error (Glib::ustring title, Glib::ustring descr);
-    void displayError (Glib::ustring title, Glib::ustring descr);  // this is called by error in the gtk thread
+    // ProgressListener interface
+    void setProgress(double p);
+    void setProgressStr(const Glib::ustring& str);
+    void setProgressState(bool inProcessing);
+    void error(const Glib::ustring& descr);
+
+    void error(const Glib::ustring& title, const Glib::ustring& descr);
+    void displayError(const Glib::ustring& title, const Glib::ustring& descr);  // this is called by error in the gtk thread
     void refreshProcessingState (bool inProcessing); // this is called by setProcessingState in the gtk thread
 
     // PParamsChangeListener interface
-    void procParamsChanged (rtengine::procparams::ProcParams* params, rtengine::ProcEvent ev, Glib::ustring descr, ParamsEdited* paramsEdited = nullptr);
+    void procParamsChanged(
+        const rtengine::procparams::ProcParams* params,
+        const rtengine::ProcEvent& ev,
+        const Glib::ustring& descr,
+        const ParamsEdited* paramsEdited = nullptr
+    );
+    void clearParamChanges();
 
     // thumbnaillistener interface
     void procParamsChanged (Thumbnail* thm, int whoChangedIt);
@@ -99,8 +108,22 @@ public:
     void historyBeforeLineChanged (const rtengine::procparams::ProcParams& params);
 
     // HistogramListener
-    void histogramChanged (LUTu & histRed, LUTu & histGreen, LUTu & histBlue, LUTu & histLuma, LUTu & histToneCurve, LUTu & histLCurve, LUTu & histCCurve,/* LUTu & histCLurve, LUTu & histLLCurve,*/ LUTu & histLCAM, LUTu & histCCAM,
-                           LUTu & histRedRaw, LUTu & histGreenRaw, LUTu & histBlueRaw, LUTu & histChroma, LUTu & histLRETI);
+    void histogramChanged(
+        const LUTu& histRed,
+        const LUTu& histGreen,
+        const LUTu& histBlue,
+        const LUTu& histLuma,
+        const LUTu& histToneCurve,
+        const LUTu& histLCurve,
+        const LUTu& histCCurve,
+        const LUTu& histLCAM,
+        const LUTu& histCCAM,
+        const LUTu& histRedRaw,
+        const LUTu& histGreenRaw,
+        const LUTu& histBlueRaw,
+        const LUTu& histChroma,
+        const LUTu& histLRETI
+    );
 
     // event handlers
     void info_toggled ();

rtgui/epd.cc

@@ -143,7 +143,7 @@ void EdgePreservingDecompositionUI::setDefaults(const ProcParams *defParams, con
 
 void EdgePreservingDecompositionUI::adjusterChanged(Adjuster* a, double newval)
 {
-    if(listener && getEnabled()) {
+    if (listener && getEnabled()) {
         if(a == strength) {
             listener->panelChanged(EvEPDStrength, Glib::ustring::format(std::setw(2), std::fixed, std::setprecision(2), a->getValue()));
         } else if(a == gamma) {
@@ -158,6 +158,10 @@ void EdgePreservingDecompositionUI::adjusterChanged(Adjuster* a, double newval)
     }
 }
 
+void EdgePreservingDecompositionUI::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void EdgePreservingDecompositionUI::enabledChanged ()
 {
     if (listener) {

rtgui/epd.h

@@ -42,6 +42,7 @@ public:
     void setBatchMode   (bool batchMode);
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged  ();
     void setAdjusterBehavior (bool stAdd, bool gAdd, bool esAdd, bool scAdd, bool rAdd);
 };

rtgui/exportpanel.h

@@ -26,9 +26,10 @@
 
 class ExportPanelListener
 {
-
 public:
-    virtual void exportRequested () {}
+    virtual ~ExportPanelListener() = default;
+
+    virtual void exportRequested() = 0;
 };
 
 class ExportPanel : public Gtk::VBox

rtgui/fattaltonemap.cc

@@ -113,6 +113,10 @@ void FattalToneMapping::adjusterChanged(Adjuster* a, double newval)
     }
 }
 
+void FattalToneMapping::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void FattalToneMapping::enabledChanged ()
 {
     if (listener) {

rtgui/fattaltonemap.h

@@ -42,6 +42,7 @@ public:
     void setBatchMode   (bool batchMode);
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged  ();
     void setAdjusterBehavior(bool amountAdd, bool thresholdAdd, bool anchorAdd);
 };

rtgui/filebrowser.cc

@@ -1991,7 +1991,11 @@ void FileBrowser::setExportPanel (ExportPanel* expanel)
     exportPanel->setExportPanelListener (this);
 }
 
-void FileBrowser::updateProfileList ()
+void FileBrowser::storeCurrentValue()
+{
+}
+
+void FileBrowser::updateProfileList()
 {
     // submenu applmenu
     int p = 0;
@@ -2085,6 +2089,10 @@ void FileBrowser::updateProfileList ()
     subMenuList.clear();
 }
 
+void FileBrowser::restoreValue()
+{
+}
+
 void FileBrowser::openRequested( std::vector<FileBrowserEntry*> mselected)
 {
     std::vector<Thumbnail*> entries;

rtgui/filebrowser.h

@@ -34,23 +34,20 @@
 class ProfileStoreLabel;
 class FileBrowser;
 class FileBrowserEntry;
+
 class FileBrowserListener
 {
-
 public:
-    virtual     ~FileBrowserListener    () {}
-    virtual void filterApplied () {}
-    virtual void openRequested          (std::vector<Thumbnail*> tbe) {}
-    virtual void developRequested       (std::vector<FileBrowserEntry*> tbe, bool fastmode) {}
-    virtual void renameRequested        (std::vector<FileBrowserEntry*> tbe) {}
-    virtual void deleteRequested        (std::vector<FileBrowserEntry*> tbe, bool inclBatchProcessed) {}
-    virtual void copyMoveRequested      (std::vector<FileBrowserEntry*> tbe, bool moveRequested) {}
-    virtual void selectionChanged       (std::vector<Thumbnail*> tbe) {}
-    virtual void clearFromCacheRequested(std::vector<FileBrowserEntry*> tbe, bool leavenotrace) {}
-    virtual bool isInTabMode            ()
-    {
-        return false;
-    }
+    virtual ~FileBrowserListener() = default;
+    virtual void filterApplied() = 0;
+    virtual void openRequested(const std::vector<Thumbnail*>& tbe) = 0;
+    virtual void developRequested(const std::vector<FileBrowserEntry*>& tbe, bool fastmode) = 0;
+    virtual void renameRequested(const std::vector<FileBrowserEntry*>& tbe) = 0;
+    virtual void deleteRequested(const std::vector<FileBrowserEntry*>& tbe, bool inclBatchProcessed) = 0;
+    virtual void copyMoveRequested(const std::vector<FileBrowserEntry*>& tbe, bool moveRequested) = 0;
+    virtual void selectionChanged(const std::vector<Thumbnail*>& tbe) = 0;
+    virtual void clearFromCacheRequested(const std::vector<FileBrowserEntry*>& tbe, bool leavenotrace) = 0;
+    virtual bool isInTabMode() const = 0;
 };
 
 /*
@@ -203,7 +200,9 @@ public:
     // exportpanel interface
     void exportRequested();
 
-    void updateProfileList ();
+    void storeCurrentValue();
+    void updateProfileList();
+    void restoreValue();
 
     type_trash_changed trash_changed();
 };

rtgui/filebrowserentry.cc

@@ -209,7 +209,7 @@ void FileBrowserEntry::procParamsChanged (Thumbnail* thm, int whoChangedIt)
     }
 }
 
-void FileBrowserEntry::updateImage (rtengine::IImage8* img, double scale, rtengine::procparams::CropParams cropParams)
+void FileBrowserEntry::updateImage(rtengine::IImage8* img, double scale, const rtengine::procparams::CropParams& cropParams)
 {
     if (!feih) {
         return;
@@ -260,7 +260,7 @@ void FileBrowserEntry::updateImage (rtengine::IImage8* img, double scale, rtengi
     idle_register.add(func, param, priority);
 }
 
-void FileBrowserEntry::_updateImage (rtengine::IImage8* img, double s, rtengine::procparams::CropParams cropParams)
+void FileBrowserEntry::_updateImage(rtengine::IImage8* img, double s, const rtengine::procparams::CropParams& cropParams)
 {
     MYWRITERLOCK(l, lockRW);
 

rtgui/filebrowserentry.h

@@ -99,8 +99,8 @@ public:
     // thumbnaillistener interface
     void procParamsChanged (Thumbnail* thm, int whoChangedIt);
     // thumbimageupdatelistener interface
-    void updateImage (rtengine::IImage8* img, double scale, rtengine::procparams::CropParams cropParams);
-    void _updateImage (rtengine::IImage8* img, double scale, rtengine::procparams::CropParams cropParams); // inside gtk thread
+    void updateImage(rtengine::IImage8* img, double scale, const rtengine::procparams::CropParams& cropParams);
+    void _updateImage(rtengine::IImage8* img, double scale, const rtengine::procparams::CropParams& cropParams); // inside gtk thread
 
     virtual bool    motionNotify  (int x, int y);
     virtual bool    pressNotify   (int button, int type, int bstate, int x, int y);

rtgui/filecatalog.cc

@@ -749,18 +749,6 @@ void FileCatalog::_refreshProgressBar ()
     }
 }
 
-void FileCatalog::filterApplied()
-{
-    const auto func = [](gpointer data) -> gboolean {
-        static_cast<FileCatalog*>(data)->_refreshProgressBar();
-
-        return FALSE;
-    };
-
-    idle_register.add(func, this);
-}
-
-
 void FileCatalog::previewReady (int dir_id, FileBrowserEntry* fdn)
 {
 
@@ -962,9 +950,19 @@ int openRequestedUI (void* p)
     return 0;
 }
 
-void FileCatalog::openRequested  (std::vector<Thumbnail*> tmb)
+void FileCatalog::filterApplied()
 {
+    const auto func = [](gpointer data) -> gboolean {
+        static_cast<FileCatalog*>(data)->_refreshProgressBar();
 
+        return FALSE;
+    };
+
+    idle_register.add(func, this);
+}
+
+void FileCatalog::openRequested(const std::vector<Thumbnail*>& tmb)
+{
     FCOIParams* params = new FCOIParams;
     params->catalog = this;
     params->tmb = tmb;
@@ -976,9 +974,8 @@ void FileCatalog::openRequested  (std::vector<Thumbnail*> tmb)
     idle_register.add(openRequestedUI, params);
 }
 
-void FileCatalog::deleteRequested  (std::vector<FileBrowserEntry*> tbe, bool inclBatchProcessed)
+void FileCatalog::deleteRequested(const std::vector<FileBrowserEntry*>& tbe, bool inclBatchProcessed)
 {
-
     if (tbe.empty()) {
         return;
     }
@@ -1017,15 +1014,12 @@ void FileCatalog::deleteRequested  (std::vector<FileBrowserEntry*> tbe, bool inc
     }
 }
 
-
-void FileCatalog::copyMoveRequested  (std::vector<FileBrowserEntry*> tbe, bool moveRequested)
+void FileCatalog::copyMoveRequested(const std::vector<FileBrowserEntry*>& tbe, bool moveRequested)
 {
-
     if (tbe.empty()) {
         return;
     }
 
-
     Glib::ustring fc_title;
 
     if (moveRequested) {
@@ -1129,9 +1123,9 @@ void FileCatalog::copyMoveRequested  (std::vector<FileBrowserEntry*> tbe, bool m
         _refreshProgressBar();
     } // Gtk::RESPONSE_OK
 }
-void FileCatalog::developRequested (std::vector<FileBrowserEntry*> tbe, bool fastmode)
-{
 
+void FileCatalog::developRequested(const std::vector<FileBrowserEntry*>& tbe, bool fastmode)
+{
     if (listener) {
         std::vector<BatchQueueEntry*> entries;
 
@@ -1262,23 +1256,8 @@ void FileCatalog::developRequested (std::vector<FileBrowserEntry*> tbe, bool fas
     }
 }
 
-void FileCatalog::exportRequested ()
+void FileCatalog::renameRequested(const std::vector<FileBrowserEntry*>& tbe)
 {
-
-}
-
-void FileCatalog::setExportPanel (ExportPanel* expanel)
-{
-
-    exportPanel = expanel;
-    exportPanel->set_sensitive (false);
-    exportPanel->setExportPanelListener (this);
-    fileBrowser->setExportPanel(expanel);
-}
-
-void FileCatalog::renameRequested  (std::vector<FileBrowserEntry*> tbe)
-{
-
     RenameDialog* renameDlg = new RenameDialog ((Gtk::Window*)get_toplevel());
 
     for (size_t i = 0; i < tbe.size(); i++) {
@@ -1333,9 +1312,15 @@ void FileCatalog::renameRequested  (std::vector<FileBrowserEntry*> tbe)
     delete renameDlg;
 }
 
-void FileCatalog::clearFromCacheRequested  (std::vector<FileBrowserEntry*> tbe, bool leavenotrace)
+void FileCatalog::selectionChanged(const std::vector<Thumbnail*>& tbe)
 {
+    if (fslistener) {
+        fslistener->selectionChanged (tbe);
+    }
+}
 
+void FileCatalog::clearFromCacheRequested(const std::vector<FileBrowserEntry*>& tbe, bool leavenotrace)
+{
     if (tbe.empty()) {
         return;
     }
@@ -1347,6 +1332,11 @@ void FileCatalog::clearFromCacheRequested  (std::vector<FileBrowserEntry*> tbe,
     }
 }
 
+bool FileCatalog::isInTabMode() const
+{
+    return inTabMode;
+}
+
 void FileCatalog::categoryButtonToggled (Gtk::ToggleButton* b, bool isMouseClick)
 {
 
@@ -1966,12 +1956,8 @@ void FileCatalog::refreshEditedState (const std::set<Glib::ustring>& efiles)
     fileBrowser->refreshEditedState (efiles);
 }
 
-void FileCatalog::selectionChanged (std::vector<Thumbnail*> tbe)
+void FileCatalog::exportRequested()
 {
-
-    if (fslistener) {
-        fslistener->selectionChanged (tbe);
-    }
 }
 
 // Called within GTK UI thread
@@ -1991,6 +1977,15 @@ void FileCatalog::setFilterPanel (FilterPanel* fpanel)
     filterPanel->set_sensitive (false);
     filterPanel->setFilterPanelListener (this);
 }
+
+void FileCatalog::setExportPanel(ExportPanel* expanel)
+{
+    exportPanel = expanel;
+    exportPanel->set_sensitive (false);
+    exportPanel->setExportPanelListener (this);
+    fileBrowser->setExportPanel(expanel);
+}
+
 void FileCatalog::trashChanged ()
 {
     if (trashIsEmpty()) {

rtgui/filecatalog.h

@@ -212,13 +212,16 @@ public:
     void refreshThumbImages ();
     void refreshHeight ();
 
-    void openRequested          (std::vector<Thumbnail*> tbe);
-    void deleteRequested        (std::vector<FileBrowserEntry*> tbe, bool inclBatchProcessed);
-    void copyMoveRequested      (std::vector<FileBrowserEntry*> tbe, bool moveRequested);
-    void developRequested       (std::vector<FileBrowserEntry*> tbe, bool fastmode);
-    void renameRequested        (std::vector<FileBrowserEntry*> tbe);
-    void clearFromCacheRequested(std::vector<FileBrowserEntry*> tbe, bool leavenotrace);
-    void selectionChanged       (std::vector<Thumbnail*> tbe);
+    void filterApplied();
+    void openRequested(const std::vector<Thumbnail*>& tbe);
+    void deleteRequested(const std::vector<FileBrowserEntry*>& tbe, bool inclBatchProcessed);
+    void copyMoveRequested(const std::vector<FileBrowserEntry*>& tbe, bool moveRequested);
+    void developRequested(const std::vector<FileBrowserEntry*>& tbe, bool fastmode);
+    void renameRequested(const std::vector<FileBrowserEntry*>& tbe);
+    void selectionChanged(const std::vector<Thumbnail*>& tbe);
+    void clearFromCacheRequested(const std::vector<FileBrowserEntry*>& tbe, bool leavenotrace);
+    bool isInTabMode() const;
+
     void emptyTrash ();
     bool trashIsEmpty ();
 
@@ -277,11 +280,6 @@ public:
 
     bool handleShortcutKey (GdkEventKey* event);
 
-    bool isInTabMode()
-    {
-        return inTabMode;
-    }
-
     bool CheckSidePanelsVisibility();
     void toggleSidePanels();
     void toggleLeftPanel();
@@ -289,7 +287,6 @@ public:
 
     void showToolBar();
     void hideToolBar();
-    void filterApplied();
 
 #ifndef _WIN32
     void on_dir_changed (const Glib::RefPtr<Gio::File>& file, const Glib::RefPtr<Gio::File>& other_file, Gio::FileMonitorEvent event_type, bool internal);

rtgui/filepanel.cc

@@ -228,7 +228,6 @@ void FilePanel::on_NB_switch_page(Gtk::Widget* page, guint page_num)
 
 bool FilePanel::fileSelected (Thumbnail* thm)
 {
-
     if (!parent) {
         return false;
     }
@@ -258,6 +257,16 @@ bool FilePanel::fileSelected (Thumbnail* thm)
                    sigc::bind(sigc::mem_fun(*this, &FilePanel::imageLoaded), thm, ld) );
     return true;
 }
+
+bool FilePanel::addBatchQueueJobs(const std::vector<BatchQueueEntry*>& entries)
+{
+    if (parent) {
+        parent->addBatchQueueJobs (entries);
+    }
+
+    return true;
+}
+
 bool FilePanel::imageLoaded( Thumbnail* thm, ProgressConnector<rtengine::InitialImage*> *pc )
 {
 
@@ -365,16 +374,6 @@ void FilePanel::open (const Glib::ustring& d)
     }
 }
 
-bool FilePanel::addBatchQueueJobs ( std::vector<BatchQueueEntry*> &entries )
-{
-
-    if (parent) {
-        parent->addBatchQueueJobs (entries);
-    }
-
-    return true;
-}
-
 void FilePanel::optionsChanged ()
 {
 

rtgui/filepanel.h

@@ -36,8 +36,7 @@ class RTWindow;
 
 class FilePanel final :
     public Gtk::HPaned,
-    public FileSelectionListener,
-    public PParamsChangeListener
+    public FileSelectionListener
 {
 public:
     FilePanel ();
@@ -72,8 +71,8 @@ public:
     void saveOptions ();
 
     // interface fileselectionlistener
-    bool fileSelected           (Thumbnail* thm);
-    bool addBatchQueueJobs ( std::vector<BatchQueueEntry*> &entries );
+    bool fileSelected(Thumbnail* thm);
+    bool addBatchQueueJobs(const std::vector<BatchQueueEntry*>& entries);
 
     void optionsChanged         ();
     bool imageLoaded( Thumbnail* thm, ProgressConnector<rtengine::InitialImage*> * );

rtgui/fileselectionchangelistener.h

@@ -19,13 +19,13 @@
 #ifndef _FILESELECTIONCHANGELISTENER_
 #define _FILESELECTIONCHANGELISTENER_
 
-#include "thumbnail.h"
+class Thumbnail;
 
 class FileSelectionChangeListener
 {
-
 public:
-    virtual void selectionChanged       (const std::vector<Thumbnail*>& selected) {}
+    virtual ~FileSelectionChangeListener() = default;
+    virtual void selectionChanged(const std::vector<Thumbnail*>& selected) = 0;
 };
 
 #endif

rtgui/fileselectionlistener.h

@@ -19,15 +19,15 @@
 #ifndef _FILESELECTIONLISTENER_
 #define _FILESELECTIONLISTENER_
 
-#include "thumbnail.h"
-#include "batchqueueentry.h"
+class Thumbnail;
+class BatchQueueEntry;
 
 class FileSelectionListener
 {
-
 public:
-    virtual bool fileSelected           (Thumbnail* thm) = 0;
-    virtual bool addBatchQueueJobs      ( std::vector<BatchQueueEntry*> &entries ) = 0;
+    virtual ~FileSelectionListener() = default;
+    virtual bool fileSelected(Thumbnail* thm) = 0;
+    virtual bool addBatchQueueJobs(const std::vector<BatchQueueEntry*>& entries) = 0;
 };
 
 #endif

rtgui/filmsimulation.cc

@@ -106,14 +106,18 @@ void FilmSimulation::enabledChanged ()
     }
 }
 
-void FilmSimulation::adjusterChanged( Adjuster* a, double newval )
+void FilmSimulation::adjusterChanged(Adjuster* a, double newval)
 {
-    if (listener && (multiImage || getEnabled()) ) {
-        Glib::ustring value = a->getTextValue();
-        listener->panelChanged ( EvFilmSimulationStrength, value );
+    if (listener && (multiImage || getEnabled())) {
+        const Glib::ustring value = a->getTextValue();
+        listener->panelChanged(EvFilmSimulationStrength, value);
     }
 }
 
+void FilmSimulation::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void FilmSimulation::setBatchMode( bool batchMode )
 {
     ToolPanel::setBatchMode( batchMode );

rtgui/filmsimulation.h

@@ -53,12 +53,13 @@ class FilmSimulation : public ToolParamBlock, public AdjusterListener, public Fo
 public:
     FilmSimulation();
 
-    void adjusterChanged( Adjuster* a, double newval );
-    void setBatchMode( bool batchMode );
-    void read( const rtengine::procparams::ProcParams* pp, const ParamsEdited* pedited = nullptr );
-    void write( rtengine::procparams::ProcParams* pp, ParamsEdited* pedited = nullptr );
-    void setAdjusterBehavior( bool strength );
-    void trimValues( rtengine::procparams::ProcParams* pp );
+    void adjusterChanged(Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
+    void setBatchMode(bool batchMode);
+    void read(const rtengine::procparams::ProcParams* pp, const ParamsEdited* pedited = nullptr);
+    void write(rtengine::procparams::ProcParams* pp, ParamsEdited* pedited = nullptr);
+    void setAdjusterBehavior(bool strength);
+    void trimValues(rtengine::procparams::ProcParams* pp);
 
 private:
     void onClutSelected();

rtgui/filterpanel.h

@@ -24,9 +24,9 @@
 
 class FilterPanelListener
 {
-
 public:
-    virtual void exifFilterChanged () {}
+    virtual ~FilterPanelListener() = default;
+    virtual void exifFilterChanged () = 0;
 };
 
 class FilterPanel : public Gtk::VBox

rtgui/flatfield.cc

@@ -232,11 +232,10 @@ void FlatField::write( rtengine::procparams::ProcParams* pp, ParamsEdited* pedit
 
 }
 
-void FlatField::adjusterChanged (Adjuster* a, double newval)
+void FlatField::adjusterChanged(Adjuster* a, double newval)
 {
     if (listener) {
-
-        Glib::ustring value = a->getTextValue();
+        const Glib::ustring value = a->getTextValue();
 
         if (a == flatFieldBlurRadius) {
             listener->panelChanged (EvFlatFieldBlurRadius,  value);
@@ -248,7 +247,6 @@ void FlatField::adjusterChanged (Adjuster* a, double newval)
 
 void FlatField::adjusterAutoToggled (Adjuster* a, bool newval)
 {
-
     if (multiImage) {
         if (flatFieldClipControl->getAutoInconsistent()) {
             flatFieldClipControl->setAutoInconsistent(false);

rtgui/gradient.cc

@@ -247,10 +247,9 @@ void Gradient::setDefaults (const ProcParams* defParams, const ParamsEdited* ped
     }
 }
 
-void Gradient::adjusterChanged (Adjuster* a, double newval)
+void Gradient::adjusterChanged(Adjuster* a, double newval)
 {
-
-    updateGeometry (int(centerX->getValue()), int(centerY->getValue()), feather->getValue(), degree->getValue());
+    updateGeometry(int(centerX->getValue()), int(centerY->getValue()), feather->getValue(), degree->getValue());
 
     if (listener && getEnabled()) {
 
@@ -266,6 +265,10 @@ void Gradient::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void Gradient::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void Gradient::enabledChanged ()
 {
 

rtgui/gradient.h

@@ -43,6 +43,7 @@ public:
     void setBatchMode   (bool batchMode);
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged  ();
     void setAdjusterBehavior (bool degreeadd, bool featheradd, bool strengthadd, bool centeradd);
     void trimValues          (rtengine::procparams::ProcParams* pp);

rtgui/histogrampanel.cc

@@ -345,7 +345,7 @@ void HistogramPanel::reorder (Gtk::PositionType align)
 }
 
 // DrawModeListener interface:
-void HistogramPanel::toggle_button_mode ()
+void HistogramPanel::toggleButtonMode ()
 {   
     if (options.histogramDrawMode == 0)
         showMode->set_image(*mode0Image);
@@ -734,7 +734,16 @@ void HistogramArea::updateOptions (bool r, bool g, bool b, bool l, bool c, bool
     updateBackBuffer ();
 }
 
-void HistogramArea::update (LUTu &histRed, LUTu &histGreen, LUTu &histBlue, LUTu &histLuma, LUTu &histChroma, LUTu &histRedRaw, LUTu &histGreenRaw, LUTu &histBlueRaw)
+void HistogramArea::update(
+    const LUTu& histRed,
+    const LUTu& histGreen,
+    const LUTu& histBlue,
+    const LUTu& histLuma,
+    const LUTu& histChroma,
+    const LUTu& histRedRaw,
+    const LUTu& histGreenRaw,
+    const LUTu& histBlueRaw
+)
 {
     if (histRed) {
         rhist = histRed;
@@ -1042,7 +1051,7 @@ bool HistogramArea::on_button_press_event (GdkEventButton* event)
         options.histogramDrawMode = (options.histogramDrawMode + 1) % 3;
         
         if (myDrawModeListener) {
-            myDrawModeListener->toggle_button_mode ();
+            myDrawModeListener->toggleButtonMode ();
         }
         
         updateBackBuffer ();

rtgui/histogrampanel.h

@@ -110,8 +110,8 @@ private:
 class DrawModeListener
 {
 public:
-    virtual ~DrawModeListener() {}
-    virtual void toggle_button_mode () {}
+    virtual ~DrawModeListener() = default;
+    virtual void toggleButtonMode() = 0;
 };
 
 class HistogramArea : public Gtk::DrawingArea, public BackBuffer, private HistogramScaling
@@ -144,7 +144,16 @@ public:
     ~HistogramArea();
 
     void updateBackBuffer ();
-    void update (LUTu &histRed, LUTu &histGreen, LUTu &histBlue, LUTu &histLuma, LUTu &histChroma, LUTu &histRedRaw, LUTu &histGreenRaw, LUTu &histBlueRaw);
+    void update(
+        const LUTu& histRed,
+        const LUTu& histGreen,
+        const LUTu& histBlue,
+        const LUTu& histLuma,
+        const LUTu& histChroma,
+        const LUTu& histRedRaw,
+        const LUTu& histGreenRaw,
+        const LUTu& histBlueRaw
+    );
     void updateOptions (bool r, bool g, bool b, bool l, bool c, bool raw, int mode);
     void on_realize();
     bool on_draw(const ::Cairo::RefPtr< Cairo::Context> &cr);
@@ -209,9 +218,17 @@ public:
     HistogramPanel ();
     ~HistogramPanel ();
 
-    void histogramChanged (LUTu &histRed, LUTu &histGreen, LUTu &histBlue, LUTu &histLuma, LUTu &histChroma, LUTu &histRedRaw, LUTu &histGreenRaw, LUTu &histBlueRaw)
+    void histogramChanged(
+        const LUTu& histRed,
+        const LUTu& histGreen,
+        const LUTu& histBlue,
+        const LUTu& histLuma,
+        const LUTu& histChroma,
+        const LUTu& histRedRaw,
+        const LUTu& histGreenRaw,
+        const LUTu& histBlueRaw)
     {
-        histogramArea->update (histRed, histGreen, histBlue, histLuma, histChroma, histRedRaw, histGreenRaw, histBlueRaw);
+        histogramArea->update(histRed, histGreen, histBlue, histLuma, histChroma, histRedRaw, histGreenRaw, histBlueRaw);
     }
     // pointermotionlistener interface
     void pointerMoved (bool validPos, const Glib::ustring &profile, const Glib::ustring &profileW, int x, int y, int r, int g, int b, bool isRaw = false);
@@ -232,7 +249,7 @@ public:
     void resized (Gtk::Allocation& req);
 
     // drawModeListener interface
-    void toggle_button_mode ();
+    void toggleButtonMode ();
 };
 
 #endif

rtgui/history.cc

@@ -154,12 +154,6 @@ void History::initHistory ()
     bookmarkModel->clear ();
 }
 
-void History::clearParamChanges ()
-{
-
-    initHistory ();
-}
-
 void History::historySelectionChanged ()
 {
 
@@ -216,9 +210,13 @@ void History::bookmarkSelectionChanged ()
     }
 }
 
-void History::procParamsChanged (ProcParams* params, ProcEvent ev, Glib::ustring descr, ParamsEdited* paramsEdited)
+void History::procParamsChanged(
+    const ProcParams* params,
+    const ProcEvent& ev,
+    const Glib::ustring& descr,
+    const ParamsEdited* paramsEdited
+)
 {
-
     // to prevent recursion, we filter out the events triggered by the history and events that should not be registered
     if (ev == EvHistoryBrowsed || ev == EvMonitorTransform) {
         return;
@@ -300,6 +298,11 @@ void History::procParamsChanged (ProcParams* params, ProcEvent ev, Glib::ustring
     selchangebm.block (false);
 }
 
+void History::clearParamChanges ()
+{
+    initHistory ();
+}
+
 void History::addBookmarkWithText (Glib::ustring text)
 {
 

rtgui/history.h

@@ -27,9 +27,9 @@
 
 class HistoryBeforeLineListener
 {
-
 public:
-    virtual void historyBeforeLineChanged (const rtengine::procparams::ProcParams& params) {}
+    virtual ~HistoryBeforeLineListener() = default;
+    virtual void historyBeforeLineChanged(const rtengine::procparams::ProcParams& params) = 0;
 };
 
 class History : public Gtk::VBox, public PParamsChangeListener
@@ -106,7 +106,12 @@ public:
     }
 
     // pparamschangelistener interface
-    void procParamsChanged (rtengine::procparams::ProcParams* params, rtengine::ProcEvent ev, Glib::ustring descr, ParamsEdited* paramsEdited = nullptr);
+    void procParamsChanged(
+        const rtengine::procparams::ProcParams* params,
+        const rtengine::ProcEvent& ev,
+        const Glib::ustring& descr,
+        const ParamsEdited* paramsEdited = nullptr
+    );
     void clearParamChanges ();
 
     void historySelectionChanged ();

rtgui/hsvequalizer.h

@@ -29,7 +29,7 @@
 #include "colorprovider.h"
 
 
-class HSVEqualizer : public ToolParamBlock, public AdjusterListener, public FoldableToolPanel, public CurveListener, public ColorProvider
+class HSVEqualizer : public ToolParamBlock, public FoldableToolPanel, public CurveListener, public ColorProvider
 {
 
 protected:

rtgui/iccprofilecreator.cc

@@ -363,7 +363,7 @@ void ICCProfileCreator::updateICCVersion()
     }
 }
 
-void ICCProfileCreator::adjusterChanged (Adjuster* a, double newval)
+void ICCProfileCreator::adjusterChanged(Adjuster* a, double newval)
 {
     if (a == aPrimariesRedX   || a == aPrimariesRedY   ||
         a == aPrimariesGreenX || a == aPrimariesGreenY ||
@@ -382,6 +382,10 @@ void ICCProfileCreator::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void ICCProfileCreator::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void ICCProfileCreator::primariesChanged()
 {
     if (primaries->get_active_row_number() > 0) {

rtgui/iccprofilecreator.h

@@ -91,7 +91,8 @@ private:
     void primariesChanged();
     void illuminantChanged();
     void trcPresetsChanged();
-    void adjusterChanged (Adjuster* a, double newval);
+    void adjusterChanged(Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     static std::vector<Glib::ustring> getGamma();
     Glib::ustring getPrimariesPresetName(const Glib::ustring &preset);
     void getPrimaries(const Glib::ustring &preset, float *p, ColorTemp &temp);

rtgui/icmpanel.cc

@@ -698,6 +698,10 @@ void ICMPanel::adjusterChanged(Adjuster* a, double newval)
     }
 }
 
+void ICMPanel::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void ICMPanel::wpChanged()
 {
     if (listener) {

rtgui/icmpanel.h

@@ -30,10 +30,9 @@
 
 class ICMPanelListener
 {
-
 public:
-    virtual ~ICMPanelListener() {}
-    virtual void saveInputICCReference(Glib::ustring fname, bool apply_wb) {}
+    virtual ~ICMPanelListener() = default;
+    virtual void saveInputICCReference(const Glib::ustring& fname, bool apply_wb) = 0;
 };
 
 class ICMPanel :
@@ -127,6 +126,7 @@ public:
     void setBatchMode(bool batchMode);
     void setDefaults(const rtengine::procparams::ProcParams* defParams, const ParamsEdited* pedited = nullptr);
     void adjusterChanged(Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
 
     void wpChanged();
     void wtrcinChanged();

rtgui/imageareatoollistener.h

@@ -27,23 +27,14 @@ class ImageAreaToolListener
 {
 
 public:
-    virtual ~ImageAreaToolListener() {}
-    virtual void spotWBselected (int x, int y, Thumbnail* thm = nullptr) {}
-    virtual void sharpMaskSelected (bool sharpMask) {}
-    virtual int  getSpotWBRectSize ()
-    {
-        return 8;
-    }
-    virtual void cropSelectionReady () {}
-    virtual void rotateSelectionReady (double rotate_deg, Thumbnail* thm = nullptr) {}
-    virtual ToolBar* getToolBar ()
-    {
-        return nullptr;
-    }
-    virtual CropGUIListener* startCropEditing (Thumbnail* thm = nullptr)
-    {
-        return nullptr;
-    }
+    virtual ~ImageAreaToolListener() = default;
+    virtual void spotWBselected(int x, int y, Thumbnail* thm = nullptr) = 0;
+    virtual void sharpMaskSelected(bool sharpMask) = 0;
+    virtual int getSpotWBRectSize() const = 0;
+    virtual void cropSelectionReady() = 0;
+    virtual void rotateSelectionReady(double rotate_deg, Thumbnail* thm = nullptr) = 0;
+    virtual ToolBar* getToolBar() const = 0;
+    virtual CropGUIListener* startCropEditing(Thumbnail* thm = nullptr) = 0;
 };
 
 #endif

rtgui/impulsedenoise.cc

@@ -77,15 +77,17 @@ void ImpulseDenoise::setDefaults (const ProcParams* defParams, const ParamsEdite
     }
 }
 
-void ImpulseDenoise::adjusterChanged (Adjuster* a, double newval)
+void ImpulseDenoise::adjusterChanged(Adjuster* a, double newval)
 {
-
     if (listener && getEnabled()) {
-
         listener->panelChanged (EvIDNThresh, Glib::ustring::format (std::setw(2), std::fixed, std::setprecision(1), a->getValue()));
     }
 }
 
+void ImpulseDenoise::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void ImpulseDenoise::enabledChanged ()
 {
     if (listener) {

rtgui/impulsedenoise.h

@@ -40,6 +40,7 @@ public:
     void setBatchMode   (bool batchMode);
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged  ();
 
     void setAdjusterBehavior (bool threshadd);

rtgui/labcurve.cc

@@ -521,9 +521,8 @@ void LCurve::curveChanged (CurveEditor* ce)
     }
 }
 
-void LCurve::adjusterChanged (Adjuster* a, double newval)
+void LCurve::adjusterChanged(Adjuster* a, double newval)
 {
-
     Glib::ustring costr;
 
     if (a == brightness) {
@@ -565,6 +564,10 @@ void LCurve::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void LCurve::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void LCurve::colorForValue (double valX, double valY, enum ColorCaller::ElemType elemType, int callerId, ColorCaller *caller)
 {
 
@@ -642,14 +645,21 @@ void LCurve::setBatchMode (bool batchMode)
 }
 
 
-void LCurve::updateCurveBackgroundHistogram (LUTu & histToneCurve, LUTu & histLCurve, LUTu & histCCurve,/* LUTu & histCLurve, LUTu & histLLCurve,*/ LUTu & histLCAM,  LUTu & histCCAM, LUTu & histRed, LUTu & histGreen, LUTu & histBlue, LUTu & histLuma, LUTu & histLRETI)
+void LCurve::updateCurveBackgroundHistogram(
+    const LUTu& histToneCurve,
+    const LUTu& histLCurve,
+    const LUTu& histCCurve,
+    const LUTu& histLCAM,
+    const LUTu& histCCAM,
+    const LUTu& histRed,
+    const LUTu& histGreen,
+    const LUTu& histBlue,
+    const LUTu& histLuma,
+    const LUTu& histLRETI
+)
 {
-
     lshape->updateBackgroundHistogram (histLCurve);
     ccshape->updateBackgroundHistogram (histCCurve);
-//  clshape->updateBackgroundHistogram (histCLurve);
-//  lcshape->updateBackgroundHistogram (histLLCurve);
-
 }
 
 void LCurve::setAdjusterBehavior (bool bradd, bool contradd, bool satadd)

rtgui/labcurve.h

@@ -75,10 +75,22 @@ public:
 
     void curveChanged (CurveEditor* ce);
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void avoidcolorshift_toggled ();
     void lcredsk_toggled();
 
-    void updateCurveBackgroundHistogram (LUTu & histToneCurve, LUTu & histLCurve, LUTu & histCCurve,/* LUTu & histCLurve, LUTu & histLLCurve,*/ LUTu & histLCAM,  LUTu & histCCAM, LUTu & histRed, LUTu & histGreen, LUTu & histBlue, LUTu & histLuma, LUTu & histLRETI);
+    void updateCurveBackgroundHistogram(
+        const LUTu& histToneCurve,
+        const LUTu& histLCurve,
+        const LUTu& histCCurve,
+        const LUTu& histLCAM,
+        const LUTu& histCCAM,
+        const LUTu& histRed,
+        const LUTu& histGreen,
+        const LUTu& histBlue,
+        const LUTu& histLuma,
+        const LUTu& histLRETI
+    );
 
     virtual void colorForValue (double valX, double valY, enum ColorCaller::ElemType elemType, int callerId, ColorCaller* caller);
 

rtgui/lensgeomlistener.h

@@ -21,8 +21,8 @@
 
 class LensGeomListener
 {
-
 public:
+    virtual ~LensGeomListener() = default;
     virtual void straightenRequested () = 0;
     virtual void autoCropRequested   () = 0;
     virtual double autoDistorRequested () = 0;

rtgui/localcontrast.cc

@@ -115,7 +115,6 @@ void LocalContrast::setDefaults(const ProcParams *defParams, const ParamsEdited
     }
 }
 
-
 void LocalContrast::adjusterChanged(Adjuster* a, double newval)
 {
     if (listener && getEnabled()) {
@@ -131,6 +130,9 @@ void LocalContrast::adjusterChanged(Adjuster* a, double newval)
     }
 }
 
+void LocalContrast::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
 
 void LocalContrast::enabledChanged ()
 {

rtgui/localcontrast.h

@@ -47,6 +47,7 @@ public:
     void setBatchMode(bool batchMode);
 
     void adjusterChanged(Adjuster *a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged();
     void setAdjusterBehavior(bool radiusAdd, bool amountAdd, bool darknessAdd, bool lightnessAdd);
 };

rtgui/lockablecolorpicker.h

@@ -27,12 +27,13 @@
 
 class CropWindow;
 
-class LockablePickerToolListener {
+class LockablePickerToolListener
+{
 public:
-    virtual ~LockablePickerToolListener () {}
+    virtual ~LockablePickerToolListener () = default;
 
     /// Callback on Color Picker's visibility switch
-    virtual void switchPickerVisibility (bool isVisible) {}
+    virtual void switchPickerVisibility(bool isVisible) = 0;
 };
 
 class LockableColorPicker : BackBuffer

rtgui/lwbutton.h

@@ -22,13 +22,13 @@
 #include <gtkmm.h>
 
 class LWButton;
+
 class LWButtonListener
 {
-
 public:
-    virtual ~LWButtonListener () {}
-    virtual void buttonPressed (LWButton* button, int actionCode, void* actionData) {}
-    virtual void redrawNeeded  (LWButton* button) {}
+    virtual ~LWButtonListener() = default;
+    virtual void buttonPressed(LWButton* button, int actionCode, void* actionData)  = 0;
+    virtual void redrawNeeded(LWButton* button) = 0;
 };
 
 class LWButton

rtgui/mountselectionlistener.h

@@ -1,31 +0,0 @@
-/*
- *  This file is part of RawTherapee.
- *
- *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
- *
- *  RawTherapee 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, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  RawTherapee 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 RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
- */
-#ifndef _MOUNTSELECTIONLISTENER_
-#define _MOUNTSELECTIONLISTENER_
-
-#include <glibmm.h>
-
-class MountSelectionListener
-{
-
-public:
-    virtual void mountSelectionChanged (Glib::ustring mountRoot) {}
-};
-
-#endif

rtgui/pcvignette.cc

@@ -78,9 +78,8 @@ void PCVignette::setDefaults (const ProcParams* defParams, const ParamsEdited* p
     }
 }
 
-void PCVignette::adjusterChanged (Adjuster* a, double newval)
+void PCVignette::adjusterChanged(Adjuster* a, double newval)
 {
-
     if (listener && getEnabled()) {
         if (a == strength) {
             listener->panelChanged (EvPCVignetteStrength, strength->getTextValue());
@@ -92,6 +91,10 @@ void PCVignette::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void PCVignette::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void PCVignette::enabledChanged ()
 {
 

rtgui/pcvignette.h

@@ -26,6 +26,7 @@ public:
     void setBatchMode   (bool batchMode);
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void enabledChanged  ();
     void setAdjusterBehavior (bool strengthadd, bool featheradd, bool roundnessadd);
     void trimValues          (rtengine::procparams::ProcParams* pp);

rtgui/perspective.cc

@@ -88,14 +88,17 @@ void PerspCorrection::setDefaults (const ProcParams* defParams, const ParamsEdit
     }
 }
 
-void PerspCorrection::adjusterChanged (Adjuster* a, double newval)
+void PerspCorrection::adjusterChanged(Adjuster* a, double newval)
 {
-
     if (listener) {
         listener->panelChanged (EvPerspCorr, Glib::ustring::compose ("%1=%3\n%2=%4", M("TP_PERSPECTIVE_HORIZONTAL"), M("TP_PERSPECTIVE_VERTICAL"), horiz->getValue(), vert->getValue()));
     }
 }
 
+void PerspCorrection::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void PerspCorrection::setAdjusterBehavior (bool badd)
 {
 

rtgui/perspective.h

@@ -40,6 +40,7 @@ public:
     void setBatchMode   (bool batchMode);
 
     void adjusterChanged (Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
     void setAdjusterBehavior (bool badd);
     void trimValues          (rtengine::procparams::ProcParams* pp);
 };

rtgui/pparamschangelistener.h

@@ -25,20 +25,23 @@
 
 class PParamsChangeListener
 {
-
 public:
-    virtual     ~PParamsChangeListener() {}
-    virtual void procParamsChanged (rtengine::procparams::ProcParams* params, rtengine::ProcEvent ev, Glib::ustring descr, ParamsEdited* paramsEdited = nullptr) {}
-    virtual void clearParamChanges () {}
+    virtual ~PParamsChangeListener() = default;
+    virtual void procParamsChanged(
+        const rtengine::procparams::ProcParams* params,
+        const rtengine::ProcEvent& ev,
+        const Glib::ustring& descr,
+        const ParamsEdited* paramsEdited = nullptr
+    ) = 0;
+    virtual void clearParamChanges() = 0;
 };
 
 class BatchPParamsChangeListener
 {
-
 public:
-    virtual     ~BatchPParamsChangeListener() {}
-    virtual void beginBatchPParamsChange(int numberOfEntries) {}
-    virtual void endBatchPParamsChange() {}
+    virtual ~BatchPParamsChangeListener() = default;
+    virtual void beginBatchPParamsChange(int numberOfEntries) = 0;
+    virtual void endBatchPParamsChange() = 0;
 };
 
 #endif

rtgui/preprocess.cc

@@ -87,7 +87,7 @@ void PreProcess::write( rtengine::procparams::ProcParams* pp, ParamsEdited* pedi
     }
 }
 
-void PreProcess::adjusterChanged (Adjuster* a, double newval)
+void PreProcess::adjusterChanged(Adjuster* a, double newval)
 {
     if (listener) {
         if (a == hdThreshold) {
@@ -96,6 +96,10 @@ void PreProcess::adjusterChanged (Adjuster* a, double newval)
     }
 }
 
+void PreProcess::adjusterAutoToggled(Adjuster* a, bool newval)
+{
+}
+
 void PreProcess::hotPixelChanged ()
 {
     if (batchMode) {

rtgui/preprocess.h

@@ -47,7 +47,8 @@ public:
 
     void hotPixelChanged();
     void deadPixelChanged();
-    void adjusterChanged     (Adjuster* a, double newval);
+    void adjusterChanged(Adjuster* a, double newval);
+    void adjusterAutoToggled(Adjuster* a, bool newval);
 
 
     //void adjusterChanged     (Adjuster* a, double newval);

rtgui/previewhandler.cc

@@ -57,7 +57,7 @@ PreviewHandler::~PreviewHandler ()
 
 //----------------previewimagelistener functions--------------------
 
-void PreviewHandler::setImage (rtengine::IImage8* i, double scale, rtengine::procparams::CropParams cp)
+void PreviewHandler::setImage(rtengine::IImage8* i, double scale, const rtengine::procparams::CropParams& cp)
 {
     pih->pending++;
 
@@ -104,7 +104,7 @@ void PreviewHandler::setImage (rtengine::IImage8* i, double scale, rtengine::pro
 }
 
 
-void PreviewHandler::delImage (IImage8* i)
+void PreviewHandler::delImage(IImage8* i)
 {
     pih->pending++;
 
@@ -149,7 +149,7 @@ void PreviewHandler::delImage (IImage8* i)
     idle_register.add(func, iap);
 }
 
-void PreviewHandler::imageReady (CropParams cp)
+void PreviewHandler::imageReady(const rtengine::procparams::CropParams& cp)
 {
     pih->pending++;
     iaimgpar* iap = new iaimgpar;

rtgui/previewhandler.h

@@ -30,13 +30,13 @@
 
 class PreviewListener
 {
-
 public:
-    virtual ~PreviewListener () {}
-    virtual void previewImageChanged () {}
+    virtual ~PreviewListener() = default;
+    virtual void previewImageChanged() = 0;
 };
 
 class PreviewHandler;
+
 struct PreviewHandlerIdleHelper {
     PreviewHandler* phandler;
     bool destroyed;
@@ -72,9 +72,9 @@ public:
     }
 
     // previewimagelistener
-    void setImage   (rtengine::IImage8* img, double scale, rtengine::procparams::CropParams cp);
-    void delImage   (rtengine::IImage8* img);
-    void imageReady (rtengine::procparams::CropParams cp);
+    void setImage(rtengine::IImage8* img, double scale, const rtengine::procparams::CropParams& cp);
+    void delImage(rtengine::IImage8* img);
+    void imageReady(const rtengine::procparams::CropParams& cp);
 
     // this function is called when a new preview image arrives from rtengine
     void previewImageChanged ();

rtgui/previewloader.h

@@ -29,9 +29,7 @@
 class PreviewLoaderListener
 {
 public:
-    virtual ~PreviewLoaderListener()
-    {
-    }
+    virtual ~PreviewLoaderListener() = default;
 
     /**
      * @brief a preview is ready
@@ -39,16 +37,12 @@ public:
      * @param dir_id directory ID this is for
      * @param fd entry
      */
-    virtual void previewReady(int dir_id, FileBrowserEntry* fd)
-    {
-    }
+    virtual void previewReady(int dir_id, FileBrowserEntry* fd) = 0;
 
     /**
      * @brief all previews have finished loading
      */
-    virtual void previewsFinished(int dir_id_)
-    {
-    }
+    virtual void previewsFinished(int dir_id_) = 0;
 };
 
 class PreviewLoader :