MainActivity: set unit for bottle content

Make the UI more flexible and
slightly easier to understand.

app/src/main/java/it/danieleverducci/lunatracker/MainActivity.kt

@@ -148,72 +148,69 @@ class MainActivity : AppCompatActivity() {
         val eventTypeStats = mutableMapOf<LunaEvent.Type, Int>()
 
         if (dynamicMenu) {
-            val sampleSize = 100
+            // populate frequency map from all events of the last two weeks
-            // populate frequency map from first 100 events
+            val lastWeekTime = (System.currentTimeMillis() / 1000) - (14 * 24 * 60 * 60)
-            allEvents.take(sampleSize.coerceAtMost(allEvents.size)).forEach {
+            allEvents.forEach {
-                eventTypeStats[it.type] = 1 + (eventTypeStats[it.type] ?: 0)
+                if (it.time > lastWeekTime) {
+                    eventTypeStats[it.type] = 1 + (eventTypeStats[it.type] ?: 0)
+                }
             }
         }
 
-        // sort all event types by frequency or ordinal
+        // sort all event types by frequency and ordinal
         val eventTypesSorted = LunaEvent.Type.entries.toList().sortedWith(
             compareBy({ -1 * (eventTypeStats[it] ?: 0) }, { it.ordinal })
         ).filter { it != LunaEvent.Type.UNKNOWN }
 
-        fun setupMenu(maxButtonCount: Int, sortedEventTypes: List<LunaEvent.Type>): Int {
-            val row1 = findViewById<View>(R.id.linear_layout_row1)
-            val row1Button1 = findViewById<TextView>(R.id.button1_row1)
-            val row1Button2 = findViewById<TextView>(R.id.button2_row1)
-
-            val row2 = findViewById<View>(R.id.linear_layout_row2)
-            val row2Button1 = findViewById<TextView>(R.id.button1_row2)
-            val row2Button2 = findViewById<TextView>(R.id.button2_row2)
-            val row2Button3 = findViewById<TextView>(R.id.button3_row2)
-
-            val row3 = findViewById<View>(R.id.linear_layout_row3)
-            val row3Button1 = findViewById<TextView>(R.id.button1_row3)
-            val row3Button2 = findViewById<TextView>(R.id.button2_row3)
-
-            // hide all rows/buttons (except row 3)
-            for (view in listOf(row1, row1Button1, row1Button2,
-                                row2, row2Button1, row2Button2, row2Button3,
-                                row3, row3Button1, row3Button2)) {
-                view.visibility = View.GONE
-            }
-            row3.visibility = View.VISIBLE
-
-            var showCounter = 0
-
-            fun show(vararg tvs: TextView) {
-                for (tv in tvs) {
-                    val type = sortedEventTypes[showCounter]
-                    tv.text = LunaEvent.getHeaderEmoji(applicationContext, type)
-                    tv.setOnClickListener { showCreateDialog(type) }
-                    tv.visibility = View.VISIBLE
-                    // show parent row
-                    (tv.parent as View).visibility = View.VISIBLE
-                    showCounter += 1
-                }
-            }
-
-            when (maxButtonCount) {
-                0 -> { } // ignore - show empty row3
-                1 -> show(row3Button1)
-                2 -> show(row3Button1, row3Button2)
-                3 -> show(row1Button1, row3Button1)
-                4, 5, 6 -> show(row1Button1, row1Button2, row3Button1, row3Button2)
-                else -> show(row1Button1, row1Button2, row2Button1, row2Button2, row2Button3, row3Button1, row3Button2)
-            }
-
-            return showCounter
-        }
-
         val usedEventCount = eventTypeStats.count { it.value > 0 }
         val maxButtonCount = if (dynamicMenu) { usedEventCount } else { 7 }
-        val eventsShown = setupMenu(maxButtonCount, eventTypesSorted)
+
+        val row1 = findViewById<View>(R.id.linear_layout_row1)
+        val row1Button1 = findViewById<TextView>(R.id.button1_row1)
+        val row1Button2 = findViewById<TextView>(R.id.button2_row1)
+
+        val row2 = findViewById<View>(R.id.linear_layout_row2)
+        val row2Button1 = findViewById<TextView>(R.id.button1_row2)
+        val row2Button2 = findViewById<TextView>(R.id.button2_row2)
+        val row2Button3 = findViewById<TextView>(R.id.button3_row2)
+
+        val row3 = findViewById<View>(R.id.linear_layout_row3)
+        val row3Button1 = findViewById<TextView>(R.id.button1_row3)
+        val row3Button2 = findViewById<TextView>(R.id.button2_row3)
+
+        // hide all rows/buttons (except row 3)
+        for (view in listOf(row1, row1Button1, row1Button2,
+                            row2, row2Button1, row2Button2, row2Button3,
+                            row3, row3Button1, row3Button2)) {
+            view.visibility = View.GONE
+        }
+        row3.visibility = View.VISIBLE
+
+        var showCounter = 0
+
+        fun show(vararg tvs: TextView) {
+            for (tv in tvs) {
+                val type = eventTypesSorted[showCounter]
+                tv.text = LunaEvent.getHeaderEmoji(applicationContext, type)
+                tv.setOnClickListener { showCreateDialog(type) }
+                tv.visibility = View.VISIBLE
+                // show parent row
+                (tv.parent as View).visibility = View.VISIBLE
+                showCounter += 1
+            }
+        }
+
+        when (maxButtonCount) {
+            0 -> { } // ignore - show empty row3
+            1 -> show(row3Button1)
+            2 -> show(row3Button1, row3Button2)
+            3 -> show(row1Button1, row3Button1)
+            4, 5, 6 -> show(row1Button1, row1Button2, row3Button1, row3Button2)
+            else -> show(row1Button1, row1Button2, row2Button1, row2Button2, row2Button3, row3Button1, row3Button2)
+        }
 
         // store left over events for popup menu
-        currentPopupItems = eventTypesSorted.subList(eventsShown, eventTypesSorted.size)
+        currentPopupItems = eventTypesSorted.subList(showCounter, eventTypesSorted.size)
     }
 
     override fun onStart() {
@@ -275,8 +272,11 @@ class MainActivity : AppCompatActivity() {
         numberPicker.wrapSelectorWheel = false
         numberPicker.value = event.quantity / 10
 
+        val numberPickerUnit = dialogView.findViewById<TextView>(R.id.dialog_number_picker_unit)
+        numberPickerUnit.text = NumericUtils(this).measurement_unit_liquid_base
+
         val dateTV = dialogView.findViewById<TextView>(R.id.dialog_date_picker)
-        val pickedTime = datePickerHelper(event.time, dateTV)
+        val pickedTime = dateTimePicker(event.time, dateTV)
 
         if (!showTime) {
             dateTV.visibility = View.GONE
@@ -314,7 +314,7 @@ class MainActivity : AppCompatActivity() {
         weightET.setText(event.quantity.toString())
 
         val dateTV = dialogView.findViewById<TextView>(R.id.dialog_date_picker)
-        val pickedTime = datePickerHelper(event.time, dateTV)
+        val pickedTime = dateTimePicker(event.time, dateTV)
 
         if (!showTime) {
             dateTV.visibility = View.GONE
@@ -365,7 +365,7 @@ class MainActivity : AppCompatActivity() {
         }
 
         val dateTV = dialogView.findViewById<TextView>(R.id.dialog_date_picker)
-        val pickedTime = datePickerHelper(event.time, dateTV)
+        val pickedTime = dateTimePicker(event.time, dateTV)
         if (!showTime) {
             dateTV.visibility = View.GONE
         }
@@ -389,7 +389,8 @@ class MainActivity : AppCompatActivity() {
         alertDialog.show()
     }
 
-    fun datePickerHelper(time: Long, dateTextView: TextView, onChange: (Long) -> Unit = {}): Calendar {
+    // Pick a date/time.
+    fun dateTimePicker(time: Long, dateTextView: TextView, onChange: (Long) -> Unit = {}): Calendar {
         dateTextView.text = DateUtils.formatDateTime(time)
 
         val dateTime = Calendar.getInstance()
@@ -420,86 +421,122 @@ class MainActivity : AppCompatActivity() {
         return dateTime
     }
 
-    fun addSleepEvent(event: LunaEvent) {
+    fun addDurationEvent(event: LunaEvent) {
-        askSleepValue(event, true) { saveEvent(event) }
+        askDurationEvent(event, true) { saveEvent(event) }
     }
 
-    fun askSleepValue(event: LunaEvent, hideDurationButtons: Boolean, onPositive: () -> Unit) {
+    fun askDurationEvent(event: LunaEvent, showTime: Boolean, onPositive: () -> Unit) {
         val d = AlertDialog.Builder(this)
         val dialogView = layoutInflater.inflate(R.layout.dialog_edit_duration, null)
         d.setTitle(event.getDialogTitle(this))
-        d.setMessage(event.getDialogMessage(this))
         d.setView(dialogView)
 
         val durationTextView = dialogView.findViewById<TextView>(R.id.dialog_date_duration)
-        val datePicker = dialogView.findViewById<TextView>(R.id.dialog_date_picker)
+        val datePickerBegin = dialogView.findViewById<TextView>(R.id.dialog_date_picker_begin)
+        val datePickerEnd = dialogView.findViewById<TextView>(R.id.dialog_date_picker_end)
+        val dateDelimiter = dialogView.findViewById<TextView>(R.id.dialog_date_range_delimiter)
         val durationButtons = dialogView.findViewById<LinearLayout>(R.id.duration_buttons)
         val durationNowButton = dialogView.findViewById<Button>(R.id.dialog_date_duration_now)
+        val durationClearButton = dialogView.findViewById<Button>(R.id.dialog_date_duration_clear)
         val durationMinus5Button = dialogView.findViewById<Button>(R.id.dialog_date_duration_minus5)
         val durationPlus5Button = dialogView.findViewById<Button>(R.id.dialog_date_duration_plus5)
 
         val currentDurationTextColor = durationTextView.currentTextColor
         val invalidDurationTextColor = ContextCompat.getColor(this, R.color.danger)
 
-        var duration = event.quantity
+        // in seconds
+        var durationStart = event.getStartTime()
+        var durationEnd = event.getEndTime()
 
-        fun isValidTime(timeSeconds: Long, durationSeconds: Int): Boolean {
+        fun isValidTime(timeUnix: Long): Boolean {
             val now = System.currentTimeMillis() / 1000
-            return (timeSeconds + durationSeconds) <= now && durationSeconds < (24 * 60 * 60)
+            return timeUnix in 1..now
         }
 
-        val onDateChange = { time: Long ->
+        fun isValidTimeSpan(timeBeginUnix: Long, timeEndUnix: Long): Boolean {
-            durationTextView.setTextColor(currentDurationTextColor)
+            return (timeBeginUnix <= timeEndUnix) && (timeEndUnix - timeBeginUnix) < (24 * 60 * 60)
+        }
 
-            if (duration == 0) {
+        fun updateFields() {
-                // baby is sleeping
+            datePickerBegin.text = DateUtils.formatDateTime(durationStart)
+            datePickerEnd.text = DateUtils.formatDateTime(durationEnd)
+
+            durationTextView.setTextColor(currentDurationTextColor)
+            val duration = durationEnd - durationStart
+            if (duration == 0L) {
+                // event is ongoing
                 durationTextView.text = "💤"
+                dateDelimiter.visibility = View.GONE
+                datePickerEnd.visibility = View.GONE
             } else {
-                durationTextView.text = DateUtils.formatTimeDuration(applicationContext, duration.toLong())
+                durationTextView.text = DateUtils.formatTimeDuration(applicationContext, duration)
-                if (!isValidTime(time, duration)) {
+                if (!isValidTimeSpan(durationStart, durationEnd)) {
                     durationTextView.setTextColor(invalidDurationTextColor)
                 }
+                dateDelimiter.visibility = View.VISIBLE
+                datePickerEnd.visibility = View.VISIBLE
             }
+
+            datePickerBegin.setTextColor(if (isValidTime(durationStart)) { currentDurationTextColor } else { invalidDurationTextColor })
+            datePickerEnd.setTextColor(if (isValidTime(durationEnd)) { currentDurationTextColor } else { invalidDurationTextColor })
         }
 
-        val pickedDateTime = datePickerHelper(event.time, datePicker, onDateChange)
+        val pickedDateTimeBegin = dateTimePicker(event.time, datePickerBegin) { pickedTime: Long ->
+            durationStart = pickedTime
+            if (datePickerEnd.visibility == View.GONE) {
+                durationEnd = pickedTime
+            }
+            updateFields()
+        }
 
-        onDateChange(pickedDateTime.time.time / 1000)
+        val pickedDateTimeEnd = dateTimePicker(event.time + event.quantity, datePickerEnd) { pickedTime: Long ->
+            durationEnd = pickedTime
+            updateFields()
+        }
 
-        if (hideDurationButtons) {
+        if (showTime) {
+            dateDelimiter.visibility = View.GONE
+            datePickerEnd.visibility = View.GONE
+            durationTextView.visibility = View.GONE
             durationButtons.visibility = View.GONE
-            d.setMessage(getString(R.string.log_sleep_dialog_description_start))
+            //d.setMessage("")
         } else {
+            dateDelimiter.visibility = View.VISIBLE
+            datePickerEnd.visibility = View.VISIBLE
+            durationTextView.visibility = View.VISIBLE
             durationButtons.visibility = View.VISIBLE
             d.setMessage(event.getDialogMessage(this))
+        }
 
-            fun adjust(minutes: Int) {
+        durationStart = pickedDateTimeBegin.time.time / 1000
-                duration += minutes * 60
+        durationEnd = pickedDateTimeEnd.time.time / 1000
-                if (duration < 0) {
-                    duration = 0
-                }
-                onDateChange(pickedDateTime.time.time / 1000)
-            }
 
-            durationMinus5Button.setOnClickListener { adjust(-5) }
+        updateFields()
-            durationPlus5Button.setOnClickListener { adjust(5) }
 
-            durationNowButton.setOnClickListener {
+        durationMinus5Button.setOnClickListener {
-                val now = System.currentTimeMillis() / 1000
+            durationEnd = (durationEnd - 300).coerceAtLeast(durationStart)
-                val start = pickedDateTime.time.time / 1000
+            updateFields()
-                if (now > start) {
+        }
-                    duration = (now - start).toInt()
+
-                    duration -= duration % 60 // prevent printing of seconds
+        durationPlus5Button.setOnClickListener {
-                    onDateChange(pickedDateTime.time.time / 1000)
+            durationEnd = (durationEnd + 300).coerceAtLeast(durationStart)
-                }
+            updateFields()
-            }
+        }
+
+        durationClearButton.setOnClickListener {
+            durationEnd = durationStart
+            updateFields()
+        }
+
+        durationNowButton.setOnClickListener {
+            durationEnd = System.currentTimeMillis() / 1000
+            updateFields()
         }
 
         d.setPositiveButton(android.R.string.ok) { dialogInterface, i ->
-            val time = pickedDateTime.time.time / 1000
+            if (isValidTime(durationStart) && isValidTime(durationEnd) && isValidTimeSpan(durationStart, durationEnd)) {
-            if (isValidTime(time, duration)) {
+                event.time = durationStart
-                event.time = time
+                event.quantity = (durationEnd - durationStart).toInt()
-                event.quantity = duration
                 onPositive()
             } else {
                 Toast.makeText(this, R.string.toast_date_error, Toast.LENGTH_SHORT).show()
@@ -537,7 +574,7 @@ class MainActivity : AppCompatActivity() {
         spinner.setSelection(event.quantity.coerceIn(0, spinner.count - 1))
 
         val dateTV = dialogView.findViewById<TextView>(R.id.dialog_date_picker)
-        val pickedTime = datePickerHelper(event.time, dateTV)
+        val pickedTime = dateTimePicker(event.time, dateTV)
         if (!showTime) {
             dateTV.visibility = View.GONE
         }
@@ -570,7 +607,7 @@ class MainActivity : AppCompatActivity() {
         d.setView(dialogView)
 
         val dateTV = dialogView.findViewById<TextView>(R.id.dialog_date_picker)
-        val pickedDateTime = datePickerHelper(event.time, dateTV)
+        val pickedDateTime = dateTimePicker(event.time, dateTV)
         if (!showTime) {
             dateTV.visibility = View.GONE
         }
@@ -605,7 +642,7 @@ class MainActivity : AppCompatActivity() {
         val qtyET = dialogView.findViewById<EditText>(R.id.notes_qty_edittext)
 
         val dateTV = dialogView.findViewById<TextView>(R.id.dialog_date_picker)
-        val pickedTime = datePickerHelper(event.time, dateTV)
+        val pickedTime = dateTimePicker(event.time, dateTV)
 
         if (!showTime) {
             dateTV.visibility = View.GONE
@@ -817,7 +854,7 @@ class MainActivity : AppCompatActivity() {
             quantityTextView.text = NumericUtils(this).formatEventQuantity(event)
             notesTextView.text = event.notes
             if (event.type == LunaEvent.Type.SLEEP && event.quantity > 0) {
-                dateEndTextView.text = DateUtils.formatDateTime(event.time + event.quantity)
+                dateEndTextView.text = DateUtils.formatDateTime(event.getEndTime())
                 dateEndTextView.visibility = View.VISIBLE
             } else {
                 dateEndTextView.visibility = View.GONE
@@ -831,7 +868,7 @@ class MainActivity : AppCompatActivity() {
         }
         updateValues()
 
-        datePickerHelper(event.time, dateTextView, { newTime: Long ->
+        dateTimePicker(event.time, dateTextView, { newTime: Long ->
             event.time = newTime
             updateValues()
         })
@@ -845,7 +882,7 @@ class MainActivity : AppCompatActivity() {
                 LunaEvent.Type.PUKE -> askAmountValue(event, false, updateValues)
                 LunaEvent.Type.TEMPERATURE -> askTemperatureValue(event, false, updateValues)
                 LunaEvent.Type.NOTE -> askNotes(event, false, updateValues)
-                LunaEvent.Type.SLEEP -> askSleepValue(event, false, updateValues)
+                LunaEvent.Type.SLEEP -> askDurationEvent(event, false, updateValues)
                 else -> {
                     Log.w(TAG, "Unexpected type: ${event.type}")
                 }
@@ -875,7 +912,7 @@ class MainActivity : AppCompatActivity() {
         val previousEvent = getPreviousSameEvent(event, allEvents)
         if (previousEvent != null) {
             val emoji = previousEvent.getHeaderEmoji(applicationContext)
-            val time = DateUtils.formatTimeDuration(applicationContext, event.time - previousEvent.time)
+            val time = DateUtils.formatTimeDuration(applicationContext, event.getStartTime() - previousEvent.getEndTime())
             previousTextView.text = String.format("⬅️ %s %s", emoji, time)
             previousTextView.setOnClickListener {
                 alertDialog.cancel()
@@ -890,7 +927,7 @@ class MainActivity : AppCompatActivity() {
         val nextEvent = getNextSameEvent(event, allEvents)
         if (nextEvent != null) {
             val emoji = nextEvent.getHeaderEmoji(applicationContext)
-            val time = DateUtils.formatTimeDuration(applicationContext, nextEvent.time - event.time)
+            val time = DateUtils.formatTimeDuration(applicationContext, nextEvent.getStartTime() - event.getEndTime())
             nextTextView.text = String.format("%s %s ➡️", time, emoji)
             nextTextView.setOnClickListener {
                 alertDialog.cancel()
@@ -1272,7 +1309,7 @@ class MainActivity : AppCompatActivity() {
             LunaEvent.Type.FOOD -> addNoteEvent(event)
             LunaEvent.Type.PUKE -> addAmountEvent(event)
             LunaEvent.Type.BATH -> addPlainEvent(event)
-            LunaEvent.Type.SLEEP -> addSleepEvent(event)
+            LunaEvent.Type.SLEEP -> addDurationEvent(event)
             LunaEvent.Type.UNKNOWN -> {} // ignore
         }
     }

app/src/main/java/it/danieleverducci/lunatracker/StatisticsActivity.kt

@@ -1,5 +1,6 @@
 package it.danieleverducci.lunatracker
 
+import android.graphics.Canvas
 import android.graphics.Color
 import android.os.Bundle
 import android.util.Log
@@ -11,15 +12,19 @@ import android.widget.TextView
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.graphics.toColorInt
+import com.github.mikephil.charting.animation.ChartAnimator
 import com.github.mikephil.charting.charts.BarChart
+import com.github.mikephil.charting.components.YAxis
 import com.github.mikephil.charting.data.BarData
 import com.github.mikephil.charting.data.BarDataSet
 import com.github.mikephil.charting.data.BarEntry
 import com.github.mikephil.charting.data.Entry
 import com.github.mikephil.charting.formatter.ValueFormatter
 import com.github.mikephil.charting.highlight.Highlight
-import com.github.mikephil.charting.interfaces.datasets.IBarDataSet
+import com.github.mikephil.charting.interfaces.dataprovider.BarDataProvider
 import com.github.mikephil.charting.listener.OnChartValueSelectedListener
+import com.github.mikephil.charting.renderer.HorizontalBarChartRenderer
+import com.github.mikephil.charting.utils.ViewPortHandler
 import it.danieleverducci.lunatracker.entities.LunaEvent
 import utils.DateUtils
 import utils.NumericUtils
@@ -27,7 +32,6 @@ import java.text.SimpleDateFormat
 import java.util.Calendar
 import java.util.Date
 import java.util.Locale
-import kotlin.math.abs
 import kotlin.math.max
 import kotlin.math.min
 
@@ -47,8 +51,7 @@ class StatisticsActivity : AppCompatActivity() {
         BOTTLE_SUM,
         SLEEP_SUM,
         SLEEP_EVENTS,
-        SLEEP_PATTERN,
+        SLEEP_PATTERN
-        MEDICINE_EVENTS
     }
 
     enum class TimeRange {
@@ -82,10 +85,12 @@ class StatisticsActivity : AppCompatActivity() {
         barChart.axisRight.setDrawGridLines(false)
         barChart.axisRight.setDrawLabels(false)
 
-        //barChart.xAxis.setDrawGridLines(true)
         barChart.xAxis.setDrawLabels(true)
         barChart.xAxis.setDrawAxisLine(false)
 
+        barChart.isScaleXEnabled = false
+        barChart.isScaleYEnabled = true
+
         graphTypeSpinner = findViewById(R.id.graph_type_selection)
         timeRangeSpinner = findViewById(R.id.time_range_selection)
 
@@ -136,84 +141,6 @@ class StatisticsActivity : AppCompatActivity() {
         }
     }
 
-    fun showMedicineBarGraph(state: GraphState) {
-        val values = HashMap<String, ArrayList<BarEntry>>()
-
-        for (event in state.events) {
-            val index = unixToSpan(event.time) - state.startSpan
-            val key = event.notes.trim().lowercase()
-            val array = values.getOrPut(key) {
-                ArrayList(List(state.endSpan - state.startSpan + 1) { BarEntry(it.toFloat(), 0F) })
-            }
-
-            array[index].y += 1F
-        }
-
-        /*
-        Log.d(TAG, "values.size: ${values.size}")
-        for ((key, value) in values) {
-            Log.d(TAG, "key: $key, value.size: ${value.size} ,value: ${value.joinToString { it.y.toLong().toString() }}")
-        }
-         */
-
-        // make sure legend names are not too long
-        fun shorten(notes: String): String {
-            return if (notes.length > 16) {
-                notes.take(13) + "..."
-            } else {
-                notes
-            }
-        }
-
-        fun chooseColor(notes: String): Int {
-            return (abs(notes.hashCode()) * 16777215) or (0xFF shl 24)
-        }
-
-        val sets = arrayListOf<IBarDataSet>()
-        for ((key, value) in values.entries) {
-            if (key.startsWith("v")) {
-                val description = shorten(key)
-                val barDataSet = BarDataSet(value, description)
-                barDataSet.color = chooseColor(key)
-                sets.add(barDataSet)
-            }
-        }
-
-        val data = BarData(sets)
-        //data.groupBars(0F, 0.2F, 0.1F);
-        data.setValueTextSize(12f)
-        data.barWidth = 1F
-        //data.groupBars(0F, 1F, 1F)
-
-        data.setValueFormatter(object : ValueFormatter() {
-            override fun getFormattedValue(value: Float): String {
-                return if (value == 0F) {
-                    ""
-                } else {
-                    value.toInt().toString()
-                }
-            }
-        })
-
-        barChart.setScaleEnabled(true)
-        barChart.legend.isEnabled = true
-
-        //barChart.xAxis.setLabelCount(min(values.size, 24), false);
-        //val maxCount = min(maxIndex, 30) // values.size
-        //Log.d(TAG, "maxCount: $maxCount")
-        barChart.setVisibleXRangeMaximum(20F) //maxCount.toFloat()) // show max 24 entries
-        barChart.xAxis.setLabelCount(30, true)
-        //barChart.xAxis.isEnabled = false
-        barChart.xAxis.setCenterAxisLabels(true)
-        barChart.setScaleEnabled(false)
-
-        //barChart.axisLeft.isSLEEP_PATTERN_GRANULARITYEnabled = true
-        //barChart.axisLeft.setSLEEP_PATTERN_GRANULARITY(0.8F)
-
-        barChart.setData(data)
-        barChart.invalidate()
-    }
-
     data class SleepRange(val start: Long, var end: Long)
 
     fun toSleepRanges(events: List<LunaEvent>): ArrayList<SleepRange> {
@@ -254,15 +181,11 @@ class StatisticsActivity : AppCompatActivity() {
         val values = ArrayList<BarEntry>()
         val stack = ArrayList(List(state.endSpan - state.startSpan + 1) { IntArray(24 * 60 * 60 / SLEEP_PATTERN_GRANULARITY) })
 
-        Log.d(TAG, "stack.size: ${stack.size}, array.size: ${stack[0].size}, dayCounter.daysWithData.size: ${state.dayCounter.daysWithData.size}")
-
         fun stackValuePattern(index: Int, spanBegin: Long, spanEnd: Long, begin: Long, end: Long) {
             val beginDays = unixToDays(begin)
             val endDays = unixToDays(end)
             var mid = begin
 
-            //Log.d(TAG, "stackValuePattern: ${beginDays}..${endDays}")
-
             for (i in beginDays..endDays) {
                 // i is the days/weeks/months since unix epoch
                 val dayBegin = daysToUnix(i)
@@ -275,8 +198,7 @@ class StatisticsActivity : AppCompatActivity() {
                     assert(sleepBegin <= sleepEnd)
                     val iBegin = (sleepBegin - dayBegin) / SLEEP_PATTERN_GRANULARITY
                     val iEnd = iBegin + (sleepEnd - sleepBegin) / SLEEP_PATTERN_GRANULARITY
-                    Log.d(TAG, "index: $index, iBegin: $iBegin, iEnd: $iEnd, dayBegin: ${Date(dayBegin * 1000)}, dayEnd: ${Date(dayEnd * 1000)}, sleepBegin: ${Date(sleepBegin * 1000)}, sleepEnd: ${Date(sleepEnd * 1000)}")
+                    for (j in iBegin..<iEnd) {
-                    for (j in iBegin..iEnd) {
                         stack[index][j.toInt()] += 1
                     }
                 }
@@ -293,17 +215,14 @@ class StatisticsActivity : AppCompatActivity() {
             val endIndex = unixToSpan(endUnix)
             var mid = startUnix
 
-            //Log.d(TAG, "startUnix: ${Date(startUnix * 1000)}, endUnix: ${Date(endUnix * 1000)}, begIndex: $begIndex, endIndex: $endIndex (index diff: ${endIndex - begIndex})")
             for (i in begIndex..endIndex) {
                 // i is the days/weeks/months since unix epoch
                 val spanBegin = spanToUnix(i)
                 val spanEnd =  spanToUnix(i + 1)
-                //Log.d(TAG, "mid: ${Date(mid * 1000)}, spanBegin: ${Date(spanBegin * 1000)}, spanEnd: ${Date(spanEnd * 1000)}, beginUnix: ${Date(startUnix * 1000)} endUnix: ${Date(endUnix * 1000)}")
                 val sleepBegin = max(mid, spanBegin)
                 val sleepEnd = min(endUnix, spanEnd)
                 val index = i - state.startSpan
                 val duration = sleepEnd - sleepBegin
-                //Log.d(TAG, "[$index] sleepBegin: ${Date(sleepBegin * 1000)}, sleepEnd: ${Date(sleepEnd * 1000)}, ${DateUtils.formatTimeDuration(this, duration)}")
 
                 state.dayCounter.setDaysWithData(sleepBegin, sleepEnd)
                 stackValuePattern(index, spanBegin, spanEnd, sleepBegin, sleepEnd)
@@ -313,13 +232,11 @@ class StatisticsActivity : AppCompatActivity() {
         }
 
         fun mapColor(occurrences: Int, maxOccurrences: Int): Int {
-            //Log.d(TAG, "$occurrences <= $maxOccurrences")
+            // occurrences: number of reported sleeps in a specific time slot
-            // occurrences: number of reported sleeps in a specific time slice
             // maxOccurrences: maximum number of days with data that can contribute to maxOccurrences
             assert(maxOccurrences > 0)
             assert(occurrences <= maxOccurrences)
 
-
             // map to color
             val q = occurrences.toFloat() / maxOccurrences.toFloat()
             val i = q * (SLEEP_PATTERN_COLORS.size - 1).toFloat()
@@ -332,11 +249,10 @@ class StatisticsActivity : AppCompatActivity() {
         for ((index, dayArray) in stack.withIndex()) {
             val daysWithData = state.dayCounter.countDaysWithData(spanToUnix(state.startSpan + index), spanToUnix(state.startSpan + index + 1))
 
-            //Log.d(TAG, "index: $index: daysWithData: $daysWithData, dayArray: ${dayArray.joinToString { it.toString() }}")
             val vals = ArrayList<Float>()
 
-            var prevIndex = -1 // time slice index
+            var prevIndex = -1 // time slot index
-            var prevValue = -1 // number of entries we have found for time slice
+            var prevValue = -1 // number of entries we have found for time slot
             for ((i, v) in dayArray.withIndex()) {
                 if (i == 0) {
                     prevIndex = i
@@ -354,13 +270,10 @@ class StatisticsActivity : AppCompatActivity() {
                 allColors.add(mapColor(prevValue, daysWithData))
             }
 
-            //Log.d(TAG, "Range $index, vals: ${vals.joinToString { it.toInt().toString() }}") //, allColors: ${allColors.joinToString { it.toString() }}")
+            assert(values.size == index)
-
+            values.add(BarEntry(values.size.toFloat(), vals.toFloatArray()))
-            values.add(BarEntry(index.toFloat(), vals.toFloatArray()))
         }
 
-        //Log.d(TAG, "daysWithData: ${state.dayCounter.daysWithData.joinToString()}")
-
         barChart.setOnChartValueSelectedListener(object : OnChartValueSelectedListener {
             override fun onValueSelected(e: Entry?, h: Highlight?) {
                 if (e == null || h == null) {
@@ -384,7 +297,6 @@ class StatisticsActivity : AppCompatActivity() {
 
                 val dayStartUnix = daysToUnix(unixToDays(state.startUnix) + index)
 
-                //Log.d(TAG, "startUnix: ${Date(startUnix * 1000)}, x: ${e.x.toInt()}, dayStartUnix: ${Date(dayStartUnix * 1000)}")
                 val startSeconds =
                     SLEEP_PATTERN_GRANULARITY * value.yVals.sliceArray(0..<h.stackIndex)
                         .fold(0) { acc, y -> acc + y.toInt() }
@@ -397,10 +309,7 @@ class StatisticsActivity : AppCompatActivity() {
                     format.format((dayStartUnix + startSeconds) * 1000).toString()
                 val endTimeString =
                     format.format((dayStartUnix + endSeconds) * 1000).toString()
-                val durationString = NumericUtils(applicationContext).formatEventQuantity(
+                val durationString = DateUtils.formatTimeDuration(applicationContext, durationSeconds.toLong())
-                    LunaEvent.Type.SLEEP,
-                    durationSeconds
-                )
 
                 val daysWithData =
                     stack[e.x.toInt()][startSeconds / SLEEP_PATTERN_GRANULARITY]
@@ -429,24 +338,26 @@ class StatisticsActivity : AppCompatActivity() {
         })
 
         val set1 = BarDataSet(values, "")
-        val data = BarData(set1)
         set1.colors = allColors
-
         set1.setDrawValues(false) // usually too many values
         set1.isHighlightEnabled = true
-
         set1.setDrawIcons(false)
-        barChart.legend.isEnabled = false
-        barChart.setScaleEnabled(false)
-        barChart.xAxis.setLabelCount(min(values.size, 24))
-        data.setValueTextSize(12f)
-        barChart.setData(data)
 
+        val data = BarData(set1)
+        data.setValueTextSize(12f)
+
+        val valueCount = min(values.size, 24)
+        barChart.setData(data)
+        barChart.legend.isEnabled = false
+        barChart.setVisibleXRangeMaximum(valueCount.toFloat())
+        barChart.xAxis.setLabelCount(valueCount)
+        barChart.xAxis.setCenterAxisLabels(false)
+        barChart.moveViewTo(data.getEntryCount().toFloat(), 0f, YAxis.AxisDependency.LEFT)
         barChart.invalidate()
     }
 
     // Sleep pattern bars that do not use time slots.
-    // This is useful/nicer for bars that only represent data of a singlur days.
+    // This is useful/nicer for bars that only represent data of a singular days.
     fun showSleepPatternBarGraphDaily(state: GraphState) {
         val ranges = toSleepRanges(state.events)
         val values = ArrayList(List(state.endSpan - state.startSpan + 1) { BarEntry(it.toFloat(), FloatArray(0)) })
@@ -472,7 +383,8 @@ class StatisticsActivity : AppCompatActivity() {
 
             // update value
             val newYVals = appendToFloatArray(yVals, awakeDuration.toFloat(), sleepDuration.toFloat())
-            values[index] = BarEntry(x, newYVals)
+            assert(index == x.toInt())
+            values[index] = BarEntry(index.toFloat(), newYVals)
         }
 
         for (range in ranges) {
@@ -484,17 +396,14 @@ class StatisticsActivity : AppCompatActivity() {
             val endIndex = unixToSpan(endUnix)
             var mid = startUnix
 
-            //Log.d(TAG, "startUnix: ${Date(startUnix * 1000)}, endUnix: ${Date(endUnix * 1000)}, begIndex: $begIndex, endIndex: $endIndex (index diff: ${endIndex - begIndex})")
             for (i in begIndex..endIndex) {
                 // i is the days/weeks/months since unix epoch
                 val spanBegin = spanToUnix(i)
                 val spanEnd =  spanToUnix(i + 1)
-                //Log.d(TAG, "mid: ${Date(mid * 1000)}, spanBegin: ${Date(spanBegin * 1000)}, spanEnd: ${Date(spanEnd * 1000)}, beginUnix: ${Date(startUnix * 1000)} endUnix: ${Date(endUnix * 1000)}")
                 val sleepBegin = max(mid, spanBegin)
                 val sleepEnd = min(endUnix, spanEnd)
                 val index = i - state.startSpan
                 val duration = sleepEnd - sleepBegin
-                //Log.d(TAG, "[$index] sleepBegin: ${Date(sleepBegin * 1000)}, sleepEnd: ${Date(sleepEnd * 1000)}, ${DateUtils.formatTimeDuration(this, duration)}")
 
                 state.dayCounter.setDaysWithData(sleepBegin, sleepEnd)
                 stackValuePattern(index, spanBegin, spanEnd, sleepBegin, sleepEnd)
@@ -503,16 +412,13 @@ class StatisticsActivity : AppCompatActivity() {
             }
         }
 
-        val set1 = BarDataSet(values, "")
-        val data = BarData(set1)
-
         // awake phase color is transparent
+        val set1 = BarDataSet(values, "")
         set1.colors = arrayListOf("#00000000".toColorInt(), "#72d7f5".toColorInt())
         set1.setDrawValues(false) // usually too many values
+        set1.setDrawIcons(false)
         set1.isHighlightEnabled = true
 
-        //barChart.xAxis.setCenterAxisLabels(true)
-
         barChart.setOnChartValueSelectedListener(object : OnChartValueSelectedListener {
             override fun onValueSelected(e: Entry?, h: Highlight?) {
                 if (e == null || h == null) {
@@ -535,7 +441,7 @@ class StatisticsActivity : AppCompatActivity() {
                 }
 
                 val duration = value.yVals[h.stackIndex].toInt()
-                val durationString = NumericUtils(applicationContext).formatEventQuantity(LunaEvent.Type.SLEEP, duration)
+                val durationString = DateUtils.formatTimeDuration(applicationContext, duration.toLong())
 
                 val offsetUnix = spanToUnix(state.startSpan + e.x.toInt()) // start of the time span (day/week/month)
                 val startUnix = offsetUnix + value.yVals.sliceArray(0..<h.stackIndex).fold(0) { acc, y -> acc + y.toInt() }
@@ -551,20 +457,36 @@ class StatisticsActivity : AppCompatActivity() {
             override fun onNothingSelected() {}
         })
 
-        set1.setDrawIcons(false)
+        val data = BarData(set1)
-        barChart.legend.isEnabled = false
-        barChart.setScaleEnabled(false)
-        barChart.xAxis.setLabelCount(min(values.size, 24))
         data.setValueTextSize(12f)
-        barChart.setData(data)
 
+        val valueCount = min(values.size, 24)
+        barChart.setData(data)
+        barChart.legend.isEnabled = false
+        barChart.setVisibleXRangeMaximum(valueCount.toFloat())
+        barChart.xAxis.setLabelCount(valueCount)
+        barChart.xAxis.setCenterAxisLabels(false)
+        barChart.moveViewTo(data.getEntryCount().toFloat(), 0f, YAxis.AxisDependency.LEFT)
         barChart.invalidate()
     }
 
+    // Make sure the value on the bar is not out of screen.
+    class CustomHorizontalBarChartRenderer(chart: BarDataProvider, animator: ChartAnimator, viewPortHandler: ViewPortHandler): HorizontalBarChartRenderer(chart, animator, viewPortHandler) {
+        override fun drawValue(
+            c: Canvas,
+            valueText: String,
+            x: Float,
+            y: Float,
+            color: Int
+        ) {
+            mValuePaint.setColor(color)
+            c.drawText(valueText, x.coerceAtLeast(60F), y, mValuePaint)
+        }
+    }
+
     fun showSleepBarGraph(state: GraphState) {
         val ranges = toSleepRanges(state.events)
         val values = ArrayList(List(state.endSpan - state.startSpan + 1) { BarEntry(it.toFloat(), 0F) })
-        //Log.d(TAG, "startUnix: ${Date(state.startUnix * 1000)}, endUnix: ${Date(state.endUnix * 1000)}")
 
         for (range in ranges) {
             // a sleep event can span to another day
@@ -575,18 +497,14 @@ class StatisticsActivity : AppCompatActivity() {
             val endIndex = unixToSpan(endUnix)
             var mid = startUnix
 
-            //Log.d(TAG, "beginIndex: $begIndex, endIndex: $endIndex, startUnix: ${Date(startUnix * 1000)} ($startUnix), endUnix: ${Date(endUnix * 1000)} ($endUnix)")
-            //Log.d(TAG, "startUnix: ${Date(startUnix * 1000)}, endUnix: ${Date(endUnix * 1000)}, begIndex: $begIndex, endIndex: $endIndex (index diff: ${endIndex - begIndex})")
             for (i in begIndex..endIndex) {
                 // i is the days/weeks/months since unix epoch
                 val spanBegin = spanToUnix(i)
                 val spanEnd =  spanToUnix(i + 1)
-                //Log.d(TAG, "i: $i, mid: ${Date(mid * 1000)}, spanBegin: ${Date(spanBegin * 1000)}, spanEnd: ${Date(spanEnd * 1000)}, beginUnix: ${Date(startUnix * 1000)} endUnix: ${Date(endUnix * 1000)}")
                 val sleepBegin = max(mid, spanBegin)
                 val sleepEnd = min(endUnix, spanEnd)
                 val index = i - state.startSpan
                 val duration = sleepEnd - sleepBegin
-                //Log.d(TAG, "[$index] sleepBegin: ${Date(sleepBegin * 1000)}, sleepEnd: ${Date(sleepEnd * 1000)}, ${DateUtils.formatTimeDuration(this, duration)}")
 
                 state.dayCounter.setDaysWithData(sleepBegin, sleepEnd)
 
@@ -603,62 +521,60 @@ class StatisticsActivity : AppCompatActivity() {
             }
         }
 
-        if (graphTypeSelection == GraphType.SLEEP_SUM) {
+        for (index in values.indices) {
-            for (index in values.indices) {
+            val daysWithData = state.dayCounter.countDaysWithData(spanToUnix(state.startSpan + index), spanToUnix(state.startSpan + index + 1))
-                val daysWithData = state.dayCounter.countDaysWithData(spanToUnix(state.startSpan + index), spanToUnix(state.startSpan + index + 1))
+            if (daysWithData == 0) {
-                if (daysWithData == 0) {
+                assert(values[index].y == 0F)
-                    assert(values[index].y == 0F)
+            } else {
-                } else {
+                values[index].y /= daysWithData
-                    values[index].y /= daysWithData
-                }
             }
         }
 
         val set1 = BarDataSet(values, "")
-        val data = BarData(set1)
         set1.setDrawValues(true)
+        set1.setDrawIcons(false)
         set1.isHighlightEnabled = false
 
+        val data = BarData(set1)
+        data.setValueTextSize(12f)
         data.setValueFormatter(object : ValueFormatter() {
             override fun getFormattedValue(value: Float): String {
+
+                val prefix = if (timeRangeSelection == TimeRange.DAY) { "" } else { "⌀ " }
                 return when (graphTypeSelection) {
-                    GraphType.SLEEP_EVENTS -> value.toInt().toString()
+                    GraphType.SLEEP_EVENTS -> {
+                        prefix + value.toInt().toString()
+                    }
                     GraphType.SLEEP_SUM -> {
-                        val prefix = if (timeRangeSelection == TimeRange.DAY) { "" } else { "⌀ " }
+                        prefix + DateUtils.formatTimeDuration(applicationContext, value.toLong())
-                        return prefix + NumericUtils(applicationContext).formatEventQuantity(LunaEvent.Type.SLEEP, value.toInt())
                     }
                     else -> {
                         Log.e(TAG, "unhandled graphTypeSelection $graphTypeSelection")
-                        value.toInt().toString()
+                        prefix + value.toInt().toString()
                     }
                 }
             }
         })
 
-        set1.setDrawIcons(false)
+        val valueCount = min(values.size, 24)
-        barChart.legend.isEnabled = false
+        barChart.renderer = CustomHorizontalBarChartRenderer(barChart, barChart.animator, barChart.viewPortHandler)
-        barChart.setScaleEnabled(false)
-        barChart.xAxis.setLabelCount(min(values.size, 24))
-        data.setValueTextSize(12f)
         barChart.setData(data)
-
+        barChart.legend.isEnabled = false
+        barChart.setVisibleXRangeMaximum(valueCount.toFloat())
+        barChart.xAxis.setLabelCount(valueCount)
+        barChart.xAxis.setCenterAxisLabels(false)
+        barChart.moveViewTo(data.getEntryCount().toFloat(), 0f, YAxis.AxisDependency.LEFT)
         barChart.invalidate()
     }
 
     fun showBottleBarGraph(state: GraphState) {
         val values = ArrayList(List(state.endSpan - state.startSpan + 1) { BarEntry(it.toFloat(), 0F) })
 
-        // needed?
-        for (i in values.indices) {
-            values[i].x = i.toFloat()
-        }
-
         for (event in state.events) {
             val index = unixToSpan(event.time) - state.startSpan
 
             state.dayCounter.setDaysWithData(event.time, event.time)
 
-            // setDaysWithData(sleepBegin, sleepEnd)
             if (graphTypeSelection == GraphType.BOTTLE_EVENTS) {
                 values[index].y += 1F
             } else if (graphTypeSelection == GraphType.BOTTLE_SUM) {
@@ -669,62 +585,46 @@ class StatisticsActivity : AppCompatActivity() {
             }
         }
 
-        if (graphTypeSelection == GraphType.BOTTLE_SUM) {
+        for (index in values.indices) {
-            for (index in values.indices) {
+            val daysWithData = state.dayCounter.countDaysWithData(spanToUnix(state.startSpan + index), spanToUnix(state.startSpan + index + 1))
-                val daysWithData = state.dayCounter.countDaysWithData(spanToUnix(state.startSpan + index), spanToUnix(state.startSpan + index + 1))
+            if (daysWithData == 0) {
-                //Log.d(TAG, "index: $index, daysWithData: $daysWithData")
+                assert(values[index].y == 0F)
-                if (daysWithData == 0) {
+            } else {
-                    assert(values[index].y == 0F)
+                values[index].y /= daysWithData
-                } else {
-                    values[index].y /= daysWithData
-                }
             }
         }
 
         val set1 = BarDataSet(values, "")
-
         set1.setDrawValues(true)
         set1.isHighlightEnabled = false
 
-        //barChart.axisLeft.isSLEEP_PATTERN_GRANULARITYEnabled = true
-        //barChart.axisLeft.setSLEEP_PATTERN_GRANULARITY(0.8F)
-
         val data = BarData(set1)
-        //data.barWidth = 0.3F // 0.85 default // ratio of barWidth to totalWidth.
+        data.setValueTextSize(12f)
-        //Log.d(TAG, "data.barWidth: ${data.barWidth}")
-
         data.setValueFormatter(object : ValueFormatter() {
             override fun getFormattedValue(value: Float): String {
-                //Log.d(TAG, "getFormattedValue ${dataTypeSelectionValue} ${eventTypeSelectionValue}")
+                val prefix = if (timeRangeSelection == TimeRange.DAY) { "" } else { "⌀ " }
                 return when (graphTypeSelection) {
-                    GraphType.BOTTLE_EVENTS -> value.toInt().toString()
+                    GraphType.BOTTLE_EVENTS -> {
+                        prefix + value.toInt().toString()
+                    }
                     GraphType.BOTTLE_SUM -> {
-                        val prefix = if (timeRangeSelection == TimeRange.DAY) { "" } else { "⌀ " }
+                        prefix + NumericUtils(applicationContext).formatEventQuantity(LunaEvent.Type.BABY_BOTTLE, value.toInt())
-                        return prefix + NumericUtils(applicationContext).formatEventQuantity(LunaEvent.Type.BABY_BOTTLE, value.toInt())
                     }
                     else -> {
                         Log.e(TAG, "unhandled graphTypeSelection")
-                        value.toInt().toString()
+                        prefix + value.toInt()
                     }
                 }
             }
         })
 
-// hm, does not work yet
+        val valueCount = min(values.size, 24)
-
+        barChart.renderer = CustomHorizontalBarChartRenderer(barChart, barChart.animator, barChart.viewPortHandler)
-        data.setValueTextSize(12f)
         barChart.setData(data)
-
+        barChart.setVisibleXRangeMaximum(valueCount.toFloat())
-        barChart.moveViewToX(values.lastOrNull()!!.x)
+        barChart.xAxis.setLabelCount(valueCount)
-
+        barChart.xAxis.setCenterAxisLabels(false)
-        val maximumRange = 16F
+        barChart.moveViewTo(data.getEntryCount().toFloat(), 0f, YAxis.AxisDependency.LEFT)
-        //val count = values.size.coerceIn(5, 20)
-        barChart.setVisibleXRangeMaximum(maximumRange) // show max 24 entries
-        barChart.xAxis.setLabelCount(maximumRange.toInt(), true)
-        //barChart.xAxis.isEnabled = false
-        barChart.xAxis.setCenterAxisLabels(true)
-        barChart.setScaleEnabled(false)
-
         barChart.invalidate()
     }
 
@@ -736,10 +636,8 @@ class StatisticsActivity : AppCompatActivity() {
         fun countDaysWithData(beginUnix: Long, endUnix: Long): Int {
             val beginDays = unixToDays(beginUnix)
             val endDays = unixToDays(endUnix)
-            //Log.d(TAG, "countDaysWithData: beginDays: $beginDays, endDays: $endDays, ${Date(beginUnix * 1000)} - ${Date(endUnix * 1000)}")
             var count = 0
             for (i in (beginDays - startDays)..<(endDays - startDays)) {
-                //Log.d(TAG, "countDaysWithData: i: $i, size: ${daysWithData.size}")
                 count += if (daysWithData[i]) { 1 } else { 0 }
             }
             return count
@@ -758,8 +656,22 @@ class StatisticsActivity : AppCompatActivity() {
 
     data class GraphState(val events: List<LunaEvent>, val dayCounter: DayCounter, val startUnix: Long, val endUnix: Long, val startSpan: Int, val endSpan: Int)
 
-    // wrapper for comon graph setup
+    fun showGraph() {
-    fun prepareGraph(type: LunaEvent.Type, callback: (GraphState) -> Unit) {
+        barChart.fitScreen()
+        barChart.data?.clearValues()
+        barChart.xAxis.valueFormatter = null
+        barChart.notifyDataSetChanged()
+        barChart.clear()
+        barChart.invalidate()
+
+        val type = when (graphTypeSelection) {
+            GraphType.BOTTLE_EVENTS,
+            GraphType.BOTTLE_SUM -> LunaEvent.Type.BABY_BOTTLE
+            GraphType.SLEEP_EVENTS,
+            GraphType.SLEEP_SUM,
+            GraphType.SLEEP_PATTERN -> LunaEvent.Type.SLEEP
+        }
+
         val events = MainActivity.allEvents.filter { it.type == type }.sortedBy { it.time }
 
         if (events.isEmpty()) {
@@ -781,7 +693,7 @@ class StatisticsActivity : AppCompatActivity() {
 
         // days when the a day/week/month starts/ends
         val startDays = unixToDays(spanToUnix(startSpan))
-        val endDays = unixToDays(spanToUnix(endSpan + 1)) // until end of next week
+        val endDays = unixToDays(spanToUnix(endSpan + 1)) // until end of next span
         val dayCounter = DayCounter(startDays, endDays)
 
         // print dates
@@ -797,44 +709,38 @@ class StatisticsActivity : AppCompatActivity() {
                 val week = dateTime.get(Calendar.WEEK_OF_YEAR)
                 val day = dateTime.get(Calendar.DAY_OF_MONTH)
 
-                // Dirty hack to get monotone number of weeks
+                // Adjust years if the first week of a year starts in the previous year.
-                // The first week if the year might start in the previous year.
+                val years = if (month == 12 && week == 1) {
-                val yearFixed = if (month == 12 && week == 1) {
                     year + 1
                 } else {
                     year
                 }
 
+                val days = "%02d".format(day)
+                val weeks = "%02d".format(week)
+                val months = "%02d".format(month)
+
                 return when (timeRangeSelection) {
-                    TimeRange.DAY -> "$day/$month/$yearFixed"
+                    TimeRange.DAY -> "$days/$months/$years"
-                    TimeRange.WEEK -> "$week/$yearFixed"
+                    TimeRange.WEEK -> "$weeks/$years"
-                    TimeRange.MONTH -> "$month/$yearFixed"
+                    TimeRange.MONTH -> "$months/$years"
                 }
             }
         }
 
-        //Log.d(TAG, "startDaysUnix: ${Date(daysToUnix(startDays) * 1000)}. endDaysUnix: ${Date(daysToUnix(endDays) * 1000)}")
+        val state = GraphState(events, dayCounter, startUnix, endUnix, startSpan, endSpan)
-
-        callback(GraphState(events, dayCounter, startUnix, endUnix, startSpan, endSpan))
-    }
-
-    fun showGraph() {
-        //Log.d(TAG, "showGraph: graphTypeSelection: $graphTypeSelection, timeRangeSelection: $timeRangeSelection")
 
         when (graphTypeSelection) {
             GraphType.BOTTLE_EVENTS,
-            GraphType.BOTTLE_SUM -> prepareGraph(LunaEvent.Type.BABY_BOTTLE) { state -> showBottleBarGraph(state) }
+            GraphType.BOTTLE_SUM -> showBottleBarGraph(state)
             GraphType.SLEEP_EVENTS,
-            GraphType.SLEEP_SUM -> prepareGraph(LunaEvent.Type.SLEEP) { state -> showSleepBarGraph(state) }
+            GraphType.SLEEP_SUM -> showSleepBarGraph(state)
-            GraphType.SLEEP_PATTERN -> prepareGraph(LunaEvent.Type.SLEEP) { state ->
+            GraphType.SLEEP_PATTERN -> if (timeRangeSelection == TimeRange.DAY) {
-                if (timeRangeSelection == TimeRange.DAY) {
+                // specialized pattern bar for daily view (optional)
-                    // specialized pattern bar for daily view
+                showSleepPatternBarGraphDaily(state)
-                    showSleepPatternBarGraphDaily(state)
+            } else {
-                } else {
+                showSleepPatternBarGraphSlotted(state)
-                    showSleepPatternBarGraphSlotted(state)
-                }
             }
-            GraphType.MEDICINE_EVENTS -> prepareGraph(LunaEvent.Type.MEDICINE) { state -> showMedicineBarGraph(state) }
         }
     }
 
@@ -854,8 +760,6 @@ class StatisticsActivity : AppCompatActivity() {
         val spinnerAdapter =
             ArrayAdapter.createFromResource(this, arrayId, R.layout.statistics_spinner_item)
 
-        //Log.d(TAG, "spinner ${arrayValues.indexOf(currentValue)} (${arrayValues.joinToString { it }})")
-
         spinner.adapter = spinnerAdapter
         spinner.setSelection(arrayValues.indexOf(currentValue))
         spinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {

app/src/main/java/it/danieleverducci/lunatracker/adapters/LunaEventRecyclerAdapter.kt

@@ -58,12 +58,7 @@ class LunaEventRecyclerAdapter: RecyclerView.Adapter<LunaEventRecyclerAdapter.Lu
             LunaEvent.Type.NOTE -> item.notes
             else -> item.getRowItemTitle(context)
         }
-        val endTime = if (item.type == LunaEvent.Type.SLEEP) {
+        holder.time.text = DateUtils.formatTimeAgo(context, item.getEndTime())
-            item.quantity + item.time
-        } else {
-            item.time
-        }
-        holder.time.text = DateUtils.formatTimeAgo(context, endTime)
         var quantityText = numericUtils.formatEventQuantity(item)
 
         // if the event is weight, show difference with the last one

app/src/main/java/it/danieleverducci/lunatracker/entities/LunaEvent.kt

@@ -115,6 +115,18 @@ class LunaEvent: Comparable<LunaEvent> {
         return getDialogMessage(context, type)
     }
 
+    fun getStartTime(): Long {
+        return time
+    }
+
+    fun getEndTime(): Long {
+        return if (type == Type.SLEEP) {
+            time + quantity
+        } else {
+            time
+        }
+    }
+
     fun toJson(): JSONObject {
         return jo
     }
@@ -162,7 +174,7 @@ class LunaEvent: Comparable<LunaEvent> {
                     Type.DIAPERCHANGE_PEE,
                     Type.PUKE -> R.string.log_amount_dialog_description
                     Type.WEIGHT -> R.string.log_weight_dialog_description
-                    Type.SLEEP -> R.string.log_sleep_dialog_description
+                    Type.SLEEP -> R.string.log_duration_dialog_description
                     else -> R.string.log_unknown_dialog_description
                 }
             )

app/src/main/java/utils/DateUtils.kt

@@ -9,10 +9,15 @@ import java.util.Date
 class DateUtils {
     companion object {
         /**
-         * Format time duration in seconds as e.g. "2 hours, 1 min".
+         * Format time duration in seconds as e.g. "2 hours, 1 min", rounded to minutes.
          * Used for the duration to the next/previous event in the event details dialog.
          */
         fun formatTimeDuration(context: Context, secondsDiff: Long): String {
+            val adjusted = (secondsDiff + 30) - (secondsDiff + 30) % 60
+            return formatTimeDurationExact(context, adjusted)
+        }
+
+        fun formatTimeDurationExact(context: Context, secondsDiff: Long): String {
             var seconds = secondsDiff
 
             val years = (seconds / (365 * 24 * 60 * 60F)).toLong()
@@ -56,11 +61,11 @@ class DateUtils {
                 return builder.toString()
             }
 
-            if (years > 0) {
+            if (years != 0L) {
                 return format(years, days, R.string.year_ago, R.string.years_ago, R.string.day_ago, R.string.days_ago)
-            } else if (days > 0) {
+            } else if (days != 0L) {
                 return format(days, hours, R.string.day_ago, R.string.days_ago, R.string.hour_ago, R.string.hours_ago)
-            } else if (hours > 0) {
+            } else if (hours != 0L) {
                 return format(hours, minutes, R.string.hour_ago, R.string.hours_ago, R.string.minute_ago, R.string.minutes_ago)
             } else {
                 return format(minutes, seconds, R.string.minute_ago, R.string.minute_ago, R.string.second_ago, R.string.seconds_ago)

app/src/main/res/layout/dialog_edit_bottle.xml

@@ -18,6 +18,7 @@
             android:layout_height="wrap_content"/>
 
         <TextView
+            android:id="@+id/dialog_number_picker_unit"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginStart="10dp"

app/src/main/res/layout/dialog_edit_duration.xml

@@ -11,13 +11,14 @@
         android:id="@+id/dialog_date_duration"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginTop="10dp"
         android:textSize="20sp"
         android:text="💤"/>
 
     <LinearLayout
         android:id="@+id/duration_buttons"
-        android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:layout_width="match_parent"
         android:gravity="center"
         android:layout_marginTop="20dp"
         android:layout_marginHorizontal="10dp"
@@ -28,29 +29,61 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_weight="1"
-            android:text="-5"/>
+            android:text="@string/dialog_duration_button_minus_5"/>
 
         <Button
             android:id="@+id/dialog_date_duration_now"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_weight="1"
-            android:text="@string/now"/>
+            android:text="@string/dialog_duration_button_now"/>
+
+        <Button
+            android:id="@+id/dialog_date_duration_clear"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/dialog_duration_button_clear"/>
 
         <Button
             android:id="@+id/dialog_date_duration_plus5"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_weight="1"
-            android:text="+5"/>
+            android:text="@string/dialog_duration_button_plus_5"/>
 
     </LinearLayout>
 
-    <TextView
+    <LinearLayout
-        android:id="@+id/dialog_date_picker"
-        android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_gravity="center"
+        android:layout_width="match_parent"
-        android:layout_marginTop="20dp"/>
+        android:gravity="center"
+        android:layout_marginTop="20dp"
+        android:layout_marginHorizontal="10dp"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/dialog_date_picker_begin"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:layout_weight="1"/>
+
+        <TextView
+            android:id="@+id/dialog_date_range_delimiter"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:layout_weight="1"
+            android:text="－"/>
+
+        <TextView
+            android:id="@+id/dialog_date_picker_end"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:layout_weight="1"/>
+
+    </LinearLayout>
 
 </LinearLayout>

app/src/main/res/values/arrays.xml

@@ -13,7 +13,6 @@
         <item>@string/statistics_sleep_sum</item>
         <item>@string/statistics_sleep_events</item>
         <item>@string/statistics_sleep_pattern</item>
-        <item>@string/statistics_medicine_events</item>
     </string-array>
 
     <string-array name="StatisticsTypeValues">
@@ -22,7 +21,6 @@
         <item>SLEEP_SUM</item>
         <item>SLEEP_EVENTS</item>
         <item>SLEEP_PATTERN</item>
-        <item>MEDICINE_EVENTS</item>
     </string-array>
 
     <string-array name="StatisticsTimeLabels">

app/src/main/res/values/strings.xml

@@ -130,8 +130,7 @@
     <string name="log_temperature_dialog_description">Select the temperature:</string>
     <string name="log_unknown_dialog_description"></string>
     <string name="log_weight_dialog_description">Insert the weight:</string>
-    <string name="log_sleep_dialog_description">Set sleep duration:</string>
+    <string name="log_duration_dialog_description">Set duration:</string>
-    <string name="log_sleep_dialog_description_start">Start sleep cycle:</string>
 
     <string name="measurement_unit_liquid_base_metric" translatable="false">ml</string>
     <string name="measurement_unit_weight_base_metric" translatable="false">g</string>
@@ -161,6 +160,11 @@
     <string name="dialog_event_detail_notes">Notes</string>
     <string name="dialog_event_detail_signature">by %s</string>
 
+    <string name="dialog_duration_button_clear">Clear</string>
+    <string name="dialog_duration_button_minus_5">-5 min</string>
+    <string name="dialog_duration_button_now">Now</string>
+    <string name="dialog_duration_button_plus_5">+5 min</string>
+
     <string name="dialog_add_logbook_title">Add logbook</string>
     <string name="dialog_add_logbook_logbookname">👶 Logbook name</string>
     <string name="dialog_add_logbook_message">Write a name to identify this logbook. This name will appear on top of the screen and, if you use WebDAV, will be in the save file name as well.</string>