qt: Enhance TrafficGraphWidget with multi-timeframe support and data persistence

This commit significantly improves the network traffic graph widget with:

1. Multiple timeframe support - View traffic data across different time
   periods (5 minutes to 28 days) using an enhanced slider interface

2. Traffic data persistence - Save and restore traffic information
   between sessions, preserving historical traffic patterns

3. Interactive visualization features:
   - Logarithmic scale toggle (mouse click) for better visualization of
     varying traffic volumes
   - Interactive tooltips showing detailed traffic information at specific points
   - Yellow highlight indicators for selected data points

4. Smooth transitions between different time ranges with animated scaling

These improvements allow users to better monitor and analyze network
traffic patterns over time, which is especially useful for debugging
connectivity issues or understanding network behavior under different
conditions.

The implementation includes proper thread-safety considerations and
handles edge cases like time jumps or missing data appropriately.

Author: rebroad

src/qt/forms/debugwindow.ui

@@ -665,20 +665,29 @@
            <item>
             <widget class="QSlider" name="sldGraphRange">
              <property name="minimum">
-              <number>1</number>
+              <number>0</number>
              </property>
              <property name="maximum">
-              <number>288</number>
+              <number>2400</number>
+             </property>
+             <property name="singleStep">
+              <number>200</number>
              </property>
              <property name="pageStep">
-              <number>12</number>
+              <number>200</number>
              </property>
              <property name="value">
-              <number>6</number>
+              <number>0</number>
              </property>
              <property name="orientation">
               <enum>Qt::Horizontal</enum>
              </property>
+             <property name="tickPosition">
+              <enum>QSlider::TicksBelow</enum>
+             </property>
+             <property name="tickInterval">
+              <number>200</number>
+             </property>
             </widget>
            </item>
            <item>
@@ -694,16 +703,6 @@
              </property>
             </widget>
            </item>
-           <item>
-            <widget class="QPushButton" name="btnClearTrafficGraph">
-             <property name="text">
-              <string>&amp;Reset</string>
-             </property>
-             <property name="autoDefault">
-              <bool>false</bool>
-             </property>
-            </widget>
-           </item>
           </layout>
          </item>
         </layout>

src/qt/rpcconsole.cpp

@@ -53,7 +53,6 @@
 using util::Join;
 
 const int CONSOLE_HISTORY = 50;
-const int INITIAL_TRAFFIC_GRAPH_MINS = 30;
 const QSize FONT_RANGE(4, 40);
 const char fontSizeSettingsKey[] = "consoleFontSize";
 
@@ -566,7 +565,6 @@ RPCConsole::RPCConsole(interfaces::Node& node, const PlatformStyle *_platformSty
     connect(ui->clearButton, &QAbstractButton::clicked, [this] { clear(); });
     connect(ui->fontBiggerButton, &QAbstractButton::clicked, this, &RPCConsole::fontBigger);
     connect(ui->fontSmallerButton, &QAbstractButton::clicked, this, &RPCConsole::fontSmaller);
-    connect(ui->btnClearTrafficGraph, &QPushButton::clicked, ui->trafficGraph, &TrafficGraphWidget::clear);
 
     // disable the wallet selector by default
     ui->WalletSelector->setVisible(false);
@@ -578,7 +576,7 @@ RPCConsole::RPCConsole(interfaces::Node& node, const PlatformStyle *_platformSty
     // based timer interface
     m_node.rpcSetTimerInterfaceIfUnset(rpcTimerInterface);
 
-    setTrafficGraphRange(INITIAL_TRAFFIC_GRAPH_MINS);
+    setTrafficGraphRange(1); // 1 is the lowest setting (0 bumps up)
     updateDetailWidget();
 
     consoleFontSize = settings.value(fontSizeSettingsKey, QFont().pointSize()).toInt();
@@ -1164,21 +1162,60 @@ void RPCConsole::scrollToEnd()
     scrollbar->setValue(scrollbar->maximum());
 }
 
-void RPCConsole::on_sldGraphRange_valueChanged(int value)
+void RPCConsole::on_sldGraphRange_valueChanged(int slider_value)
 {
-    const int multiplier = 5; // each position on the slider represents 5 min
-    int mins = value * multiplier;
-    setTrafficGraphRange(mins);
+    static int64_t last_click_time = 0;
+    static bool last_click_was_up = false;
+    unsigned int value = (slider_value + 100) / 200 + 1; // minimum of 1, 0 reserve for scale bump
+    if (!slider_in_use) {
+        // Avoid accidental boucing of direction
+        int64_t now = GetTime<std::chrono::milliseconds>().count();
+        bool this_click_is_up = false;
+        bool bouncing = false;
+        if (slider_value > set_slider_value) this_click_is_up = true;
+        if (now - last_click_time < 250 && this_click_is_up != last_click_was_up) {
+            bouncing = true;
+            ui->sldGraphRange->blockSignals(true);
+            ui->sldGraphRange->setValue(set_slider_value);
+            ui->sldGraphRange->blockSignals(false);
+        }
+        last_click_time = now;
+        last_click_was_up = this_click_is_up;
+        set_slider_value = slider_value;
+        if (bouncing) return;
+    }
+    set_slider_value = slider_value;
+    setTrafficGraphRange(value);
 }
 
-void RPCConsole::setTrafficGraphRange(int mins)
+void RPCConsole::setTrafficGraphRange(int value)
 {
-    ui->trafficGraph->setGraphRange(std::chrono::minutes{mins});
-    ui->lblGraphRange->setText(GUIUtil::formatDurationStr(std::chrono::minutes{mins}));
+    std::chrono::minutes mins = ui->trafficGraph->setGraphRange(value);
+    if (value)
+        set_slider_value = (value - 1) * 200;
+    else {
+        // When bumping, calculate the proper slider position based on the traffic graph's new value
+        unsigned int new_graph_value = ui->trafficGraph->getCurrentRangeIndex() + 1; // +1 because the index is 0-based
+        set_slider_value = (new_graph_value - 1) * 200;
+        ui->sldGraphRange->blockSignals(true);
+        ui->sldGraphRange->setValue(set_slider_value);
+        ui->sldGraphRange->blockSignals(false);
+    }
+    ui->lblGraphRange->setText(GUIUtil::formatDurationStr(mins));
 }
 
+void RPCConsole::on_sldGraphRange_sliderReleased()
+{
+    ui->sldGraphRange->setValue(set_slider_value);
+    slider_in_use = false;
+}
+
+void RPCConsole::on_sldGraphRange_sliderPressed() { slider_in_use = true; }
+
 void RPCConsole::updateTrafficStats(quint64 totalBytesIn, quint64 totalBytesOut)
 {
+    if (!slider_in_use && ui->trafficGraph->GraphRangeBump())
+        setTrafficGraphRange(0); // bump it up
     ui->lblBytesIn->setText(GUIUtil::formatBytes(totalBytesIn));
     ui->lblBytesOut->setText(GUIUtil::formatBytes(totalBytesOut));
 }

src/qt/rpcconsole.h

@@ -90,6 +90,8 @@ private Q_SLOTS:
     void on_openDebugLogfileButton_clicked();
     /** change the time range of the network traffic graph */
     void on_sldGraphRange_valueChanged(int value);
+    void on_sldGraphRange_sliderReleased();
+    void on_sldGraphRange_sliderPressed();
     /** update traffic statistics */
     void updateTrafficStats(quint64 totalBytesIn, quint64 totalBytesOut);
     void resizeEvent(QResizeEvent *event) override;
@@ -146,7 +148,7 @@ public Q_SLOTS:
     } const ts;
 
     void startExecutor();
-    void setTrafficGraphRange(int mins);
+    void setTrafficGraphRange(int value);
 
     enum ColumnWidths
     {
@@ -177,6 +179,8 @@ public Q_SLOTS:
     bool m_is_executing{false};
     QByteArray m_peer_widget_header_state;
     QByteArray m_banlist_widget_header_state;
+    bool slider_in_use{false};
+    int set_slider_value{0};
 
     /** Update UI with latest network info from model. */
     void updateNetworkState();