Unset measurable habits (#1899)

As proposed in #615, the background is now solid color on implicit check but has a stroked checkmark instead of a full one.

uhabits-android/src/main/java/org/isoron/uhabits/activities/common/dialogs/NumberDialog.kt

@@ -104,7 +104,11 @@ class NumberDialog : AppCompatDialogFragment() {
         try {
             val numberFormat = NumberFormat.getInstance()
             val valueStr = view.value.text.toString()
-            value = numberFormat.parse(valueStr)!!.toDouble()
+            value = if (valueStr.isNotEmpty()) {
+                numberFormat.parse(valueStr)!!.toDouble()
+            } else {
+                Entry.UNKNOWN.toDouble() / 1000
+            }
         } catch (e: ParseException) {
             // NOP
         }

uhabits-android/src/main/java/org/isoron/uhabits/activities/common/views/RingView.kt

@@ -58,6 +58,7 @@ class RingView : View {
     private var em = 0f
     private var text: String?
     private var textSize: Float
+    private var isStrokedTextEnabled: Boolean = false
     private var enableFontAwesome = false
     private var internalDrawingCache: Bitmap? = null
     private var cacheCanvas: Canvas? = null
@@ -131,6 +132,10 @@ class RingView : View {
         invalidate()
     }
 
+    fun setIsStrokedTextEnabled(isStroked: Boolean) {
+        this.isStrokedTextEnabled = isStroked
+    }
+
     override fun onDraw(canvas: Canvas) {
         super.onDraw(canvas)
         val activeCanvas: Canvas?
@@ -159,6 +164,12 @@ class RingView : View {
             pRing!!.xfermode = null
             pRing!!.color = color
             pRing!!.textSize = textSize
+
+            if (isStrokedTextEnabled) {
+                pRing!!.style = Paint.Style.STROKE
+                pRing!!.strokeWidth = textSize / 15f
+            }
+
             if (enableFontAwesome) pRing!!.typeface = getFontAwesome(context)
             activeCanvas.drawText(
                 text!!,

uhabits-android/src/main/java/org/isoron/uhabits/widgets/views/CheckmarkWidgetView.kt

@@ -68,13 +68,13 @@ class CheckmarkWidgetView : HabitWidgetView {
         val fgColor: Int
         setShadowAlpha(0x4f)
         when (entryState) {
-            YES_MANUAL, SKIP -> {
+            YES_MANUAL, SKIP, YES_AUTO -> {
                 bgColor = activeColor
                 fgColor = res.getColor(R.attr.contrast0)
                 backgroundPaint!!.color = bgColor
                 frame!!.setBackgroundDrawable(background)
             }
-            YES_AUTO, NO, UNKNOWN -> {
+            NO, UNKNOWN -> {
                 bgColor = res.getColor(R.attr.cardBgColor)
                 fgColor = res.getColor(R.attr.contrast60)
             }
@@ -87,12 +87,23 @@ class CheckmarkWidgetView : HabitWidgetView {
         ring.setColor(fgColor)
         ring.setBackgroundColor(bgColor)
         ring.setText(text)
+        ring.setIsStrokedTextEnabled(strokedTextEnabled)
         label.text = name
         label.setTextColor(fgColor)
         requestLayout()
         postInvalidate()
     }
 
+    private val strokedTextEnabled: Boolean
+        get() = if (isNumerical) {
+            false
+        } else {
+            when (entryState) {
+                YES_AUTO -> true
+                else -> false
+            }
+        }
+
     private val text: String
         get() = if (isNumerical) {
             (max(0, entryValue) / 1000.0).toShortString()