diff --git a/src/analyze/gui/mainwindow.ui b/src/analyze/gui/mainwindow.ui
index a7dd7b9..5d44d4c 100644
--- a/src/analyze/gui/mainwindow.ui
+++ b/src/analyze/gui/mainwindow.ui
@@ -1,806 +1,809 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <ui version="4.0">
  <class>MainWindow</class>
  <widget class="QMainWindow" name="MainWindow">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>1332</width>
     <height>896</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>MainWindow</string>
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QVBoxLayout" name="verticalLayout_6">
     <property name="leftMargin">
      <number>0</number>
     </property>
     <property name="topMargin">
      <number>0</number>
     </property>
     <property name="rightMargin">
      <number>0</number>
     </property>
     <property name="bottomMargin">
      <number>0</number>
     </property>
     <item>
      <widget class="KMessageWidget" name="messages">
       <property name="messageType">
        <enum>KMessageWidget::Information</enum>
       </property>
       <property name="icon">
        <iconset theme="dialog-error">
         <normaloff>.</normaloff>.</iconset>
       </property>
      </widget>
     </item>
     <item>
      <widget class="QStackedWidget" name="pages">
       <widget class="QWidget" name="openPage">
        <layout class="QVBoxLayout" name="verticalLayout_15">
         <item>
          <spacer name="verticalSpacer_4">
           <property name="orientation">
            <enum>Qt::Vertical</enum>
           </property>
           <property name="sizeHint" stdset="0">
            <size>
             <width>20</width>
             <height>40</height>
            </size>
           </property>
          </spacer>
         </item>
         <item>
          <widget class="QGroupBox" name="groupBox">
           <property name="title">
            <string>Open Heaptrack Data</string>
           </property>
           <layout class="QFormLayout" name="formLayout">
            <item row="1" column="1">
             <widget class="KUrlRequester" name="openFile">
              <property name="toolTip">
               <string>&lt;qt&gt;&lt;p&gt;This field specifies the primary heaptrack data file. These files are called &lt;tt&gt;heaptrack.$APP.$PID.gz&lt;/tt&gt;. You can produce such a file by profiling your application, e.g. via:&lt;/p&gt;
 &lt;pre&gt;&lt;code&gt;heaptrack &amp;lt;yourapplication&amp;gt; ...&lt;/code&gt;&lt;/pre&gt;
 &lt;p&gt;Or, alternatively, you can attach to a running process via&lt;/p&gt;
 &lt;pre&gt;&lt;code&gt;heaptrack --pid $(pidof &amp;lt;yourapplication&amp;gt;)&lt;/code&gt;&lt;/pre&gt;&lt;/qt&gt;</string>
              </property>
              <property name="filter">
               <string>heaptrack.*.*.gz</string>
              </property>
              <property name="placeholderText">
               <string>path/to/heaptrack.$APP.$PID.gz</string>
              </property>
              <property name="fileDialogModality">
               <enum>Qt::WindowModal</enum>
              </property>
             </widget>
            </item>
            <item row="2" column="1">
             <widget class="KUrlRequester" name="compareTo">
              <property name="toolTip">
               <string>&lt;qt&gt;You can optionally specify a second heaptrack data file to compare to. If set, this file will be used as a base and its cost gets subtracted from the primary data costs.&lt;/qt&gt;</string>
              </property>
              <property name="filter">
               <string>heaptrack.*.*.gz</string>
              </property>
              <property name="placeholderText">
               <string>path/to/heaptrack.$APP.$PID.gz</string>
              </property>
              <property name="fileDialogModality">
               <enum>Qt::WindowModal</enum>
              </property>
             </widget>
            </item>
            <item row="1" column="0">
             <widget class="QLabel" name="openFileLabel">
              <property name="text">
               <string>Profile &amp;Data:</string>
              </property>
              <property name="buddy">
               <cstring>openFile</cstring>
              </property>
             </widget>
            </item>
            <item row="2" column="0">
             <widget class="QLabel" name="compareToLabel">
              <property name="text">
               <string>Compare to:</string>
              </property>
              <property name="buddy">
               <cstring>compareTo</cstring>
              </property>
             </widget>
            </item>
           </layout>
          </widget>
         </item>
         <item>
          <widget class="QDialogButtonBox" name="buttonBox">
           <property name="enabled">
            <bool>false</bool>
           </property>
           <property name="standardButtons">
            <set>QDialogButtonBox::Open</set>
           </property>
          </widget>
         </item>
         <item>
          <spacer name="verticalSpacer_3">
           <property name="orientation">
            <enum>Qt::Vertical</enum>
           </property>
           <property name="sizeHint" stdset="0">
            <size>
             <width>20</width>
             <height>40</height>
            </size>
           </property>
          </spacer>
         </item>
        </layout>
       </widget>
       <widget class="QWidget" name="loadingPage">
        <layout class="QVBoxLayout" name="verticalLayout_3">
         <item>
          <spacer name="verticalSpacer">
           <property name="orientation">
            <enum>Qt::Vertical</enum>
           </property>
           <property name="sizeHint" stdset="0">
            <size>
             <width>20</width>
             <height>40</height>
            </size>
           </property>
          </spacer>
         </item>
         <item>
          <widget class="QLabel" name="loadingLabel">
           <property name="text">
            <string notr="true">Loading file, please wait...</string>
           </property>
           <property name="alignment">
            <set>Qt::AlignCenter</set>
           </property>
          </widget>
         </item>
         <item>
          <widget class="QProgressBar" name="loadingProgress">
           <property name="value">
            <number>24</number>
           </property>
          </widget>
         </item>
         <item>
          <widget class="QLabel" name="progressLabel">
           <property name="text">
            <string notr="true">Progress Message...</string>
           </property>
           <property name="alignment">
            <set>Qt::AlignCenter</set>
           </property>
           <property name="wordWrap">
            <bool>true</bool>
           </property>
          </widget>
         </item>
         <item>
          <spacer name="verticalSpacer_2">
           <property name="orientation">
            <enum>Qt::Vertical</enum>
           </property>
           <property name="sizeHint" stdset="0">
            <size>
             <width>20</width>
             <height>40</height>
            </size>
           </property>
          </spacer>
         </item>
        </layout>
       </widget>
       <widget class="QWidget" name="resultsPage">
        <layout class="QVBoxLayout" name="verticalLayout_2">
         <property name="leftMargin">
          <number>0</number>
         </property>
         <property name="topMargin">
          <number>0</number>
         </property>
         <property name="rightMargin">
          <number>0</number>
         </property>
         <property name="bottomMargin">
          <number>0</number>
         </property>
         <item>
          <widget class="QTabWidget" name="tabWidget">
           <property name="currentIndex">
            <number>0</number>
           </property>
           <widget class="QWidget" name="summaryTab">
            <attribute name="title">
             <string>Summary</string>
            </attribute>
            <layout class="QVBoxLayout" name="verticalLayout_7">
             <item>
              <widget class="QWidget" name="widget_10" native="true">
               <layout class="QHBoxLayout" name="horizontalLayout_6">
                <item>
                 <widget class="QLabel" name="summaryLeft">
                  <property name="text">
                   <string notr="true">summary</string>
                  </property>
                  <property name="wordWrap">
                   <bool>true</bool>
                  </property>
                  <property name="textInteractionFlags">
                   <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLabel" name="summaryCenter">
                  <property name="text">
                   <string notr="true">summary</string>
                  </property>
                  <property name="wordWrap">
                   <bool>true</bool>
                  </property>
                  <property name="textInteractionFlags">
                   <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLabel" name="summaryRight">
                  <property name="sizePolicy">
                   <sizepolicy hsizetype="Preferred" vsizetype="Minimum">
                    <horstretch>0</horstretch>
                    <verstretch>0</verstretch>
                   </sizepolicy>
                  </property>
                  <property name="text">
                   <string notr="true">summary goes here</string>
                  </property>
                  <property name="alignment">
                   <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
                  </property>
                  <property name="wordWrap">
                   <bool>true</bool>
                  </property>
                  <property name="textInteractionFlags">
                   <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
                  </property>
                 </widget>
                </item>
               </layout>
              </widget>
             </item>
             <item>
              <widget class="Line" name="line">
               <property name="orientation">
                <enum>Qt::Horizontal</enum>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QWidget" name="widget_4" native="true">
               <property name="sizePolicy">
                <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
                 <horstretch>0</horstretch>
                 <verstretch>0</verstretch>
                </sizepolicy>
               </property>
               <layout class="QHBoxLayout" name="horizontalLayout_2">
                <item>
                 <widget class="QSplitter" name="splitter">
                  <property name="orientation">
                   <enum>Qt::Horizontal</enum>
                  </property>
                  <widget class="QWidget" name="widget_5" native="true">
                   <layout class="QVBoxLayout" name="verticalLayout_8">
                    <item>
                     <widget class="QLabel" name="topPeakLabel">
                      <property name="font">
                       <font>
                        <weight>75</weight>
                        <bold>true</bold>
                       </font>
                      </property>
                      <property name="toolTip">
                       <string>List of functions that allocated the most memory at a given time.</string>
                      </property>
                      <property name="text">
                       <string>Highest Memory Peaks</string>
                      </property>
                      <property name="alignment">
                       <set>Qt::AlignCenter</set>
                      </property>
                     </widget>
                    </item>
                    <item>
                     <widget class="QTreeView" name="topPeak">
                      <property name="toolTip">
                       <string>List of functions that allocated the most memory at a given time.</string>
                      </property>
                      <property name="alternatingRowColors">
                       <bool>true</bool>
                      </property>
                      <property name="rootIsDecorated">
                       <bool>false</bool>
                      </property>
                      <property name="uniformRowHeights">
                       <bool>true</bool>
                      </property>
                     </widget>
                    </item>
                   </layout>
                  </widget>
                  <widget class="QWidget" name="widget_6" native="true">
                   <layout class="QVBoxLayout" name="verticalLayout_9">
                    <item>
                     <widget class="QLabel" name="topLeakedLabel">
                      <property name="font">
                       <font>
                        <weight>75</weight>
                        <bold>true</bold>
                       </font>
                      </property>
                      <property name="toolTip">
                       <string>List of functions that leak the most memory.</string>
                      </property>
                      <property name="text">
                       <string>Largest Memory Leaks</string>
                      </property>
                      <property name="alignment">
                       <set>Qt::AlignCenter</set>
                      </property>
                     </widget>
                    </item>
                    <item>
                     <widget class="QTreeView" name="topLeaked">
                      <property name="toolTip">
                       <string>List of functions that leak the most memory.</string>
                      </property>
                      <property name="alternatingRowColors">
                       <bool>true</bool>
                      </property>
                      <property name="rootIsDecorated">
                       <bool>false</bool>
                      </property>
                      <property name="uniformRowHeights">
                       <bool>true</bool>
                      </property>
                     </widget>
                    </item>
                   </layout>
                  </widget>
                  <widget class="QWidget" name="widget_7" native="true">
                   <layout class="QVBoxLayout" name="verticalLayout_10">
                    <item>
                     <widget class="QLabel" name="topAllocationsLabel">
                      <property name="font">
                       <font>
                        <weight>75</weight>
                        <bold>true</bold>
                       </font>
                      </property>
                      <property name="toolTip">
                       <string>List of functions that allocate memory most often.</string>
                      </property>
                      <property name="text">
                       <string>Most Memory Allocations</string>
                      </property>
                      <property name="alignment">
                       <set>Qt::AlignCenter</set>
                      </property>
                     </widget>
                    </item>
                    <item>
                     <widget class="QTreeView" name="topAllocations">
                      <property name="toolTip">
                       <string>List of functions that allocate memory most often.</string>
                      </property>
                      <property name="alternatingRowColors">
                       <bool>true</bool>
                      </property>
                      <property name="rootIsDecorated">
                       <bool>false</bool>
                      </property>
                      <property name="uniformRowHeights">
                       <bool>true</bool>
                      </property>
                     </widget>
                    </item>
                   </layout>
                  </widget>
                  <widget class="QWidget" name="widget_8" native="true">
                   <layout class="QVBoxLayout" name="verticalLayout_11">
                    <item>
                     <widget class="QLabel" name="topTemporaryLabel">
                      <property name="font">
                       <font>
                        <weight>75</weight>
                        <bold>true</bold>
                       </font>
                      </property>
                      <property name="toolTip">
                       <string>List of functions that produced the most temporary memory allocations.</string>
                      </property>
                      <property name="text">
                       <string>Most Temporary Allocations</string>
                      </property>
                      <property name="alignment">
                       <set>Qt::AlignCenter</set>
                      </property>
                     </widget>
                    </item>
                    <item>
                     <widget class="QTreeView" name="topTemporary">
                      <property name="toolTip">
                       <string>List of functions that produced the most temporary memory allocations.</string>
                      </property>
                      <property name="alternatingRowColors">
                       <bool>true</bool>
                      </property>
                      <property name="rootIsDecorated">
                       <bool>false</bool>
                      </property>
                      <property name="uniformRowHeights">
                       <bool>true</bool>
                      </property>
                     </widget>
                    </item>
                   </layout>
                  </widget>
                  <widget class="QWidget" name="widget_9" native="true">
                   <layout class="QVBoxLayout" name="verticalLayout_12">
                    <item>
                     <widget class="QLabel" name="topAllocatedLabel">
                      <property name="font">
                       <font>
                        <weight>75</weight>
                        <bold>true</bold>
                       </font>
                      </property>
                      <property name="toolTip">
                       <string>List of functions that allocated the most memory overall, ignoring deallocations.</string>
                      </property>
                      <property name="text">
                       <string>Most Memory Allocated</string>
                      </property>
                      <property name="alignment">
                       <set>Qt::AlignCenter</set>
                      </property>
                     </widget>
                    </item>
                    <item>
                     <widget class="QTreeView" name="topAllocated">
                      <property name="toolTip">
                       <string>List of functions that allocated the most memory overall, ignoring deallocations.</string>
                      </property>
                      <property name="alternatingRowColors">
                       <bool>true</bool>
                      </property>
                      <property name="rootIsDecorated">
                       <bool>false</bool>
                      </property>
                      <property name="uniformRowHeights">
                       <bool>true</bool>
                      </property>
                     </widget>
                    </item>
                   </layout>
                  </widget>
                 </widget>
                </item>
               </layout>
              </widget>
             </item>
            </layout>
           </widget>
           <widget class="QWidget" name="bottomUpTab">
            <attribute name="title">
             <string>Bottom-Up</string>
            </attribute>
            <layout class="QVBoxLayout" name="verticalLayout">
             <item>
              <widget class="QWidget" name="widget" native="true">
               <layout class="QHBoxLayout" name="horizontalLayout">
                <property name="spacing">
                 <number>6</number>
                </property>
                <property name="leftMargin">
                 <number>0</number>
                </property>
                <property name="topMargin">
                 <number>0</number>
                </property>
                <property name="rightMargin">
                 <number>0</number>
                </property>
                <property name="bottomMargin">
                 <number>0</number>
                </property>
                <item>
                 <widget class="QLineEdit" name="bottomUpFilterFunction">
                  <property name="placeholderText">
                   <string>filter by function...</string>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLineEdit" name="bottomUpFilterFile">
                  <property name="placeholderText">
                   <string>filter by file...</string>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLineEdit" name="bottomUpFilterModule">
                  <property name="placeholderText">
                   <string>filter by module...</string>
                  </property>
                 </widget>
                </item>
               </layout>
              </widget>
             </item>
             <item>
              <widget class="QTreeView" name="bottomUpResults">
               <property name="alternatingRowColors">
                <bool>true</bool>
               </property>
               <property name="indentation">
                <number>10</number>
               </property>
               <property name="rootIsDecorated">
                <bool>true</bool>
               </property>
               <property name="uniformRowHeights">
                <bool>true</bool>
               </property>
               <property name="sortingEnabled">
                <bool>true</bool>
               </property>
              </widget>
             </item>
            </layout>
           </widget>
           <widget class="QWidget" name="callerCalleeTab">
            <attribute name="title">
             <string>Caller / Callee</string>
            </attribute>
            <layout class="QVBoxLayout" name="verticalLayout_13">
             <item>
              <widget class="QWidget" name="widget_11" native="true">
               <layout class="QHBoxLayout" name="horizontalLayout_7">
                <property name="spacing">
                 <number>6</number>
                </property>
                <property name="leftMargin">
                 <number>0</number>
                </property>
                <property name="topMargin">
                 <number>0</number>
                </property>
                <property name="rightMargin">
                 <number>0</number>
                </property>
                <property name="bottomMargin">
                 <number>0</number>
                </property>
                <item>
                 <widget class="QLineEdit" name="callerCalleeFilterFunction">
                  <property name="placeholderText">
                   <string>filter by function...</string>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLineEdit" name="callerCalleeFilterFile">
                  <property name="placeholderText">
                   <string>filter by file...</string>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLineEdit" name="callerCalleeFilterModule">
                  <property name="placeholderText">
                   <string>filter by module...</string>
                  </property>
                 </widget>
                </item>
               </layout>
              </widget>
             </item>
             <item>
              <widget class="QTreeView" name="callerCalleeResults">
+              <property name="alternatingRowColors">
+               <bool>true</bool>
+              </property>
               <property name="rootIsDecorated">
                <bool>false</bool>
               </property>
               <property name="uniformRowHeights">
                <bool>true</bool>
               </property>
               <property name="sortingEnabled">
                <bool>true</bool>
               </property>
              </widget>
             </item>
            </layout>
           </widget>
           <widget class="QWidget" name="topDownTab">
            <attribute name="title">
             <string>Top-Down</string>
            </attribute>
            <layout class="QVBoxLayout" name="verticalLayout_4">
             <item>
              <widget class="QWidget" name="widget_2" native="true">
               <layout class="QHBoxLayout" name="horizontalLayout_4">
                <property name="leftMargin">
                 <number>0</number>
                </property>
                <property name="topMargin">
                 <number>0</number>
                </property>
                <property name="rightMargin">
                 <number>0</number>
                </property>
                <property name="bottomMargin">
                 <number>0</number>
                </property>
                <item>
                 <widget class="QLineEdit" name="topDownFilterFunction">
                  <property name="placeholderText">
                   <string>filter by function...</string>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLineEdit" name="topDownFilterFile">
                  <property name="placeholderText">
                   <string>filter by file...</string>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLineEdit" name="topDownFilterModule">
                  <property name="placeholderText">
                   <string>filter by module...</string>
                  </property>
                 </widget>
                </item>
               </layout>
              </widget>
             </item>
             <item>
              <widget class="QTreeView" name="topDownResults">
               <property name="alternatingRowColors">
                <bool>true</bool>
               </property>
               <property name="indentation">
                <number>10</number>
               </property>
               <property name="rootIsDecorated">
                <bool>true</bool>
               </property>
               <property name="uniformRowHeights">
                <bool>true</bool>
               </property>
               <property name="sortingEnabled">
                <bool>true</bool>
               </property>
              </widget>
             </item>
            </layout>
           </widget>
           <widget class="FlameGraph" name="flameGraphTab">
            <attribute name="title">
             <string>Flame Graph</string>
            </attribute>
           </widget>
          </widget>
         </item>
        </layout>
       </widget>
      </widget>
     </item>
    </layout>
   </widget>
   <widget class="QDockWidget" name="stacksDock">
    <property name="features">
     <set>QDockWidget::NoDockWidgetFeatures</set>
    </property>
    <property name="windowTitle">
     <string>S&amp;tacks</string>
    </property>
    <attribute name="dockWidgetArea">
     <number>2</number>
    </attribute>
    <widget class="QWidget" name="stacksDockContents">
     <layout class="QVBoxLayout" name="verticalLayout_5">
      <item>
       <widget class="QWidget" name="widget_3" native="true">
        <layout class="QHBoxLayout" name="horizontalLayout_5">
         <property name="leftMargin">
          <number>0</number>
         </property>
         <property name="topMargin">
          <number>0</number>
         </property>
         <property name="rightMargin">
          <number>0</number>
         </property>
         <property name="bottomMargin">
          <number>0</number>
         </property>
         <item>
          <widget class="QLabel" name="stackSpinnerLabel">
           <property name="text">
            <string>Selected Stack:</string>
           </property>
          </widget>
         </item>
         <item>
          <widget class="QSpinBox" name="stackSpinner"/>
         </item>
        </layout>
       </widget>
      </item>
      <item>
       <widget class="QTreeView" name="stacksTree">
        <property name="rootIsDecorated">
         <bool>false</bool>
        </property>
        <property name="uniformRowHeights">
         <bool>true</bool>
        </property>
       </widget>
      </item>
     </layout>
    </widget>
   </widget>
   <widget class="QMenuBar" name="menuBar">
    <property name="geometry">
     <rect>
      <x>0</x>
      <y>0</y>
      <width>1332</width>
      <height>30</height>
     </rect>
    </property>
    <widget class="QMenu" name="menu_File">
     <property name="title">
      <string>&amp;File</string>
     </property>
    </widget>
    <addaction name="menu_File"/>
   </widget>
  </widget>
  <customwidgets>
   <customwidget>
    <class>KMessageWidget</class>
    <extends>QFrame</extends>
    <header>kmessagewidget.h</header>
   </customwidget>
   <customwidget>
    <class>KUrlRequester</class>
    <extends>QWidget</extends>
    <header>kurlrequester.h</header>
   </customwidget>
   <customwidget>
    <class>FlameGraph</class>
    <extends>QWidget</extends>
    <header>flamegraph.h</header>
    <container>1</container>
   </customwidget>
  </customwidgets>
  <resources/>
  <connections/>
 </ui>