On loop mode, the view auto scroll to latest data

DSView/pv/config/appconfig.cpp

@@ -122,6 +122,7 @@ static void _loadApp(AppOptions &o, QSettings &st)
     getFiled("displayProfileInBar", st, o.displayProfileInBar, false);
     getFiled("swapBackBufferAlways", st, o.swapBackBufferAlways, false);
     getFiled("fontSize", st, o.fontSize, 9.0);
+    getFiled("autoScrollLatestData", st, o.autoScrollLatestData, true);
 
     o.warnofMultiTrig = true;
 
@@ -148,6 +149,7 @@ static void _saveApp(AppOptions &o, QSettings &st)
     setFiled("displayProfileInBar", st, o.displayProfileInBar);
     setFiled("swapBackBufferAlways", st, o.swapBackBufferAlways);
     setFiled("fontSize", st, o.fontSize);
+    setFiled("autoScrollLatestData", st, o.autoScrollLatestData);
 
     QString fmt =  FormatArrayToString(o.m_protocolFormats);
     setFiled("protocalFormats", st, fmt);

DSView/pv/config/appconfig.h

@@ -65,6 +65,7 @@ struct AppOptions
     bool  trigPosDisplayInMid;
     bool  displayProfileInBar;
     bool  swapBackBufferAlways;
+    bool  autoScrollLatestData;
     float fontSize;
 
     std::vector<StringPair> m_protocolFormats;

DSView/pv/dialogs/applicationpardlg.cpp

@@ -124,6 +124,9 @@ bool ApplicationParamDlg::ShowDlg(QWidget *parent)
     QCheckBox *ck_abortData = new QCheckBox();
     ck_abortData->setChecked(app.appOptions.swapBackBufferAlways);
 
+    QCheckBox *ck_autoScrollLatestData = new QCheckBox();
+    ck_autoScrollLatestData->setChecked(app.appOptions.autoScrollLatestData);
+
     QComboBox *ftCbSize = new DsComboBox();
     ftCbSize->setFixedWidth(50);
     bind_font_size_list(ftCbSize, app.appOptions.fontSize);
@@ -137,6 +140,8 @@ bool ApplicationParamDlg::ShowDlg(QWidget *parent)
     logicLay->addWidget(ck_quickScroll, 0, 1, Qt::AlignRight);
     logicLay->addWidget(new QLabel(L_S(STR_PAGE_DLG, S_ID(IDS_DLG_USE_ABORT_DATA_REPEAT), "Used abort data")), 1, 0, Qt::AlignLeft); 
     logicLay->addWidget(ck_abortData, 1, 1, Qt::AlignRight);
+    logicLay->addWidget(new QLabel(L_S(STR_PAGE_DLG, S_ID(IDS_DLG_AUTO_SCROLL_LATEAST_DATA), "Auto scoll latest")), 2, 0, Qt::AlignLeft); 
+    logicLay->addWidget(ck_autoScrollLatestData, 2, 1, Qt::AlignRight);
     lay->addWidget(logicGroup);
 
     //Scope group
@@ -190,6 +195,10 @@ bool ApplicationParamDlg::ShowDlg(QWidget *parent)
             app.appOptions.fontSize = fSize;
             bFontChanged = true;
         }
+        if (app.appOptions.autoScrollLatestData != ck_autoScrollLatestData->isChecked()){
+            app.appOptions.autoScrollLatestData = ck_autoScrollLatestData->isChecked();
+            bAppChanged = true;
+        }
  
         if (bAppChanged){
             app.SaveApp();

DSView/pv/sigsession.cpp

@@ -386,6 +386,11 @@ namespace pv
         return cur_samplelimits() * 1.0 / cur_snap_samplerate();
     }
 
+    double SigSession::get_logic_data_view_time()
+    {
+        return _view_data->get_logic()->get_ring_sample_count() * 1.0 / cur_snap_samplerate();
+    }
+
     double SigSession::cur_view_time()
     {
         return _device_agent.get_time_base() * DS_CONF_DSO_HDIVS * 1.0 / SR_SEC(1);

DSView/pv/sigsession.h

@@ -439,6 +439,8 @@ public:
         return _dso_status_valid;
     }
 
+    double get_logic_data_view_time();
+
 private:
     void set_cur_samplelimits(uint64_t samplelimits);
     void set_cur_snap_samplerate(uint64_t samplerate);

DSView/pv/view/view.cpp

@@ -1132,6 +1132,16 @@ int64_t View::get_max_offset()
                 (get_view_width() * MaxViewRate));
 }
 
+int64_t View::get_logic_lst_data_offset(){
+    return ceil((_session->get_logic_data_view_time() / _scale) -
+                (get_view_width() * MaxViewRate));
+}
+
+void View::scroll_to_logic_last_data_time()
+{
+    set_scale_offset(scale(), get_logic_lst_data_offset() + 10);
+}
+
 // -- calibration dialog
 void View::show_calibration()
 {

DSView/pv/view/view.h

@@ -153,6 +153,7 @@ public:
 
     int64_t get_min_offset();
     int64_t get_max_offset();
+    int64_t get_logic_lst_data_offset();
 
     void capture_init();
 
@@ -243,6 +244,8 @@ public:
         return _search_pos;
     }
 
+    void scroll_to_logic_last_data_time();
+
     /*
      * horizental cursors
      */

DSView/pv/view/viewport.cpp

@@ -766,7 +766,7 @@ void Viewport::mousePressEvent(QMouseEvent *event)
     }
 }
 
-void Viewport::mouseMoveEvent(QMouseEvent *event)
+void Viewport:: mouseMoveEvent(QMouseEvent *event)
 {
 	assert(event);
     _hover_hit = false;
@@ -775,8 +775,8 @@ void Viewport::mouseMoveEvent(QMouseEvent *event)
     if (event->buttons() & Qt::LeftButton) {
         if (_type == TIME_VIEW) {
             if (_action_type == NO_ACTION) {
-                _view.set_scale_offset(_view.scale(),
-                    _mouse_down_offset + (_mouse_down_point - event->pos()).x());
+                int64_t x = _mouse_down_offset + (_mouse_down_point - event->pos()).x();
+                _view.set_scale_offset(_view.scale(), x);
             }
             _drag_strength = (_mouse_down_point - event->pos()).x();
         }
@@ -1385,7 +1385,9 @@ void Viewport::set_receive_len(quint64 length)
             _sample_received += length;
     }
 
-    if (_view.session().get_device()->get_work_mode() == LOGIC)
+    int mode = _view.session().get_device()->get_work_mode();
+
+    if (mode == LOGIC)
     {   
         if (_view.session().get_device()->is_file() == false)
         {
@@ -1420,6 +1422,12 @@ void Viewport::set_receive_len(quint64 length)
         }      
     }
 
+    if (mode == LOGIC && AppConfig::Instance().appOptions.autoScrollLatestData
+        && _view.session().is_realtime_refresh())
+    {
+        _view.scroll_to_logic_last_data_time();
+    }    
+
     // Received new data, and refresh the view.
     update();
 }

lang/cn/dlg.json

@@ -714,5 +714,9 @@
     {
         "id": "IDS_DLG_ABORT",
         "text": "放弃"
+    },
+    {
+        "id": "IDS_DLG_AUTO_SCROLL_LATEAST_DATA",
+        "text": "自动滚动到最新数据"
     }    
 ]

lang/en/dlg.json

@@ -714,5 +714,9 @@
     {
         "id": "IDS_DLG_ABORT",
         "text": "Abort"
+    },
+    {
+        "id": "IDS_DLG_AUTO_SCROLL_LATEAST_DATA",
+        "text": "Auto scroll to latest data"
     }
 ]