Merge pull request #406 from thomasgubler/plotfilter

Filtering in plot perspective

src/ui/Linechart.ui

@@ -47,7 +47,7 @@
       <number>10</number>
      </property>
      <widget class="QWidget" name="curveGroupBox" native="true">
-      <layout class="QGridLayout" name="gridLayout" rowstretch="50,0">
+      <layout class="QGridLayout" name="gridLayout" rowstretch="50,0,0,0">
        <property name="leftMargin">
         <number>6</number>
        </property>
@@ -110,11 +110,18 @@
          </widget>
         </widget>
        </item>
-       <item row="1" column="0">
+       <item row="3" column="0">
         <layout class="QVBoxLayout" name="verticalLayout_2">
          <property name="spacing">
           <number>2</number>
          </property>
+         <item>
+          <widget class="QLineEdit" name="plotFilterLineEdit">
+           <property name="placeholderText">
+            <string>Filter... (Ctrl+F)</string>
+           </property>
+          </widget>
+         </item>
          <item>
           <widget class="QComboBox" name="uasSelectionBox">
            <item>

src/ui/linechart/LinechartWidget.cc

@@ -26,7 +26,7 @@ This file is part of the PIXHAWK project
  *   @brief Line chart plot widget
  *
  *   @author Lorenz Meier <mavteam@student.ethz.ch>
- *
+ *   @author Thomas Gubler <thomasgubler@student.ethz.ch>
  */
 
 #include <QDebug>
@@ -105,6 +105,8 @@ LinechartWidget::LinechartWidget(int systemid, QWidget *parent) : QWidget(parent
 
     connect(ui.recolorButton, SIGNAL(clicked()), this, SLOT(recolor()));
     connect(ui.shortNameCheckBox, SIGNAL(clicked(bool)), this, SLOT(setShortNames(bool)));
+    connect(ui.plotFilterLineEdit, SIGNAL(textChanged(const QString&)), this, SLOT(filterCurves(const QString&)));
+    new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_F), this, SLOT(setPlotFilterLineEditFocus()));
 
     int labelRow = curvesWidgetLayout->rowCount();
 
@@ -564,6 +566,7 @@ void LinechartWidget::addCurve(const QString& curve, const QString& unit)
     checkBox->setObjectName(curve+unit);
     checkBox->setToolTip(tr("Enable the curve in the graph window"));
     checkBox->setWhatsThis(tr("Enable the curve in the graph window"));
+    checkBoxes.insert(curve+unit, checkBox);
     curvesWidgetLayout->addWidget(checkBox, labelRow, 0);
 
     // Icon
@@ -593,6 +596,7 @@ void LinechartWidget::addCurve(const QString& curve, const QString& unit)
     unitLabel->setText(unit);
     unitLabel->setToolTip(tr("Unit of ") + curve);
     unitLabel->setWhatsThis(tr("Unit of ") + curve);
+    curveUnits.insert(curve+unit, unitLabel);
     curvesWidgetLayout->addWidget(unitLabel, labelRow, 4);
     unitLabel->setVisible(ui.showUnitsCheckBox->isChecked());
     connect(ui.showUnitsCheckBox, SIGNAL(clicked(bool)), unitLabel, SLOT(setVisible(bool)));
@@ -691,6 +695,52 @@ void LinechartWidget::recolor()
     }
 }
 
+void LinechartWidget::setPlotFilterLineEditFocus()
+{
+    ui.plotFilterLineEdit->setFocus(Qt::ShortcutFocusReason);
+}
+
+void LinechartWidget::filterCurve(const QString &key, bool match)
+{
+        colorIcons[key]->setVisible(match);
+        curveNameLabels[key]->setVisible(match);
+        (*curveLabels)[key]->setVisible(match);
+        (*curveMeans)[key]->setVisible(match);
+        (*curveVariances)[key]->setVisible(match);
+        curveUnits[key]->setVisible(match);
+        checkBoxes[key]->setVisible(match);
+}
+
+void LinechartWidget::filterCurves(const QString &filter)
+{
+    //qDebug() << "filterCurves: filter: " << filter;
+
+    if (filter != "")
+    {
+        /* Hide Elements which do not match the filter pattern */
+        QStringMatcher stringMatcher(filter, Qt::CaseInsensitive);
+        foreach (QString key, colorIcons.keys())
+        {
+            if (stringMatcher.indexIn(key) < 0)
+            {
+                filterCurve(key, false);
+            }
+            else
+            {
+                filterCurve(key, true);
+            }
+        }
+    }
+    else
+    {
+        /* Show all Elements */
+        foreach (QString key, colorIcons.keys())
+        {
+            filterCurve(key, true);
+        }
+    }
+}
+
 QString LinechartWidget::getCurveName(const QString& key, bool shortEnabled)
 {
     if (shortEnabled)

src/ui/linechart/LinechartWidget.h

@@ -26,7 +26,7 @@ This file is part of the PIXHAWK project
  *   @brief Definition of Line chart plot widget
  *
  *   @author Lorenz Meier <mavteam@student.ethz.ch>
- *
+ *   @author Thomas Gubler <thomasgubler@student.ethz.ch>
  */
 #ifndef LINECHARTWIDGET_H
 #define LINECHARTWIDGET_H
@@ -79,6 +79,8 @@ public slots:
     void setShortNames(bool enable);
     /** @brief Append data to the given curve. */
     void appendData(int uasId, const QString& curve, const QString& unit, const QVariant& value, quint64 usec);
+    /** @brief Hide curves which do not match the filter pattern */
+    void filterCurves(const QString &filter);
 
     void toggleLogarithmicScaling(bool toggled);
     void takeButtonClick(bool checked);
@@ -106,10 +108,14 @@ public slots:
     void readSettings();
     /** @brief Select all curves */
     void selectAllCurves(bool all);
+    /** @brief Sets the focus to the LineEdit for plot-filtering */
+    void setPlotFilterLineEditFocus();
 
 private slots:
     /** Called when the user changes the time scale combobox. */
     void timeScaleChanged(int index);
+    /** @brief Applies action on curve corresponding to key based on the bool match. I used to filter curves */
+    void filterCurve(const QString &key, bool match);
 
 protected:
     void addCurveToList(QString curve);
@@ -132,9 +138,11 @@ protected:
     QMap<QString, QString> curveNames;    ///< Full curve names
     QMap<QString, QLabel*>* curveMeans;   ///< References to the curve means
     QMap<QString, QLabel*>* curveMedians; ///< References to the curve medians
+    QMap<QString, QWidget*> curveUnits;    ///< References to the curve units
     QMap<QString, QLabel*>* curveVariances; ///< References to the curve variances
     QMap<QString, int> intData;           ///< Current values for integer-valued curves
     QMap<QString, QWidget*> colorIcons;    ///< Reference to color icons
+    QMap<QString, QCheckBox*> checkBoxes;    ///< Reference to checkboxes
 
     QWidget* curvesWidget;                ///< The QWidget containing the curve selection button
     QGridLayout* curvesWidgetLayout;      ///< The layout for the curvesWidget QWidget