Use transparent chart theme if available

These themes have been implemented in openhab/openhab-core@ac84206

Fixes openhab#2726

Signed-off-by: mueller-ma <[email protected]>

mobile/src/main/java/org/openhab/habdroid/model/ServerProperties.kt

@@ -61,6 +61,7 @@ data class ServerProperties(val flags: Int, val sitemaps: List<Sitemap>) : Parce
         const val SERVER_FLAG_SITEMAP_HAS_INVISIBLE_WIDGETS = 1 shl 5
         const val SERVER_FLAG_SUPPORTS_ANY_FORMAT_ICON = 1 shl 6
         const val SERVER_FLAG_OH3_UI = 1 shl 7
+        const val SERVER_FLAG_TRANSPARENT_CHARTS = 1 shl 8
 
         class UpdateHandle internal constructor(internal val scope: CoroutineScope) {
             internal var job: Job? = null
@@ -125,6 +126,9 @@ data class ServerProperties(val flags: Int, val sitemaps: List<Sitemap>) : Parce
                             if (version >= 4) {
                                 flags = flags or SERVER_FLAG_OH3_UI
                             }
+                            if (version >= 5) {
+                                flags = flags or SERVER_FLAG_TRANSPARENT_CHARTS
+                            }
                         } catch (nfe: NumberFormatException) {
                             // ignored: older versions without SSE support didn't return a number
                             Log.i(TAG, "Server has rest api version < 1")

mobile/src/main/java/org/openhab/habdroid/ui/ChartActivity.kt

@@ -16,7 +16,6 @@ package org.openhab.habdroid.ui
 import android.content.res.Configuration
 import android.os.Bundle
 import android.util.Log
-import android.util.TypedValue
 import android.view.Menu
 import android.view.MenuItem
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
@@ -27,6 +26,7 @@ import org.openhab.habdroid.model.Widget
 import org.openhab.habdroid.ui.widget.WidgetImageView
 import org.openhab.habdroid.util.ScreenLockMode
 import org.openhab.habdroid.util.determineDataUsagePolicy
+import org.openhab.habdroid.util.getChartTheme
 import org.openhab.habdroid.util.getPrefs
 import org.openhab.habdroid.util.orDefaultIfEmpty
 
@@ -36,6 +36,7 @@ class ChartActivity : AbstractBaseActivity(), SwipeRefreshLayout.OnRefreshListen
     private lateinit var period: String
     private lateinit var widget: Widget
     private lateinit var chartTheme: CharSequence
+    private var serverFlags: Int = 0
     private var density: Int = 0
     private var showLegend: Boolean = true
 
@@ -44,11 +45,13 @@ class ChartActivity : AbstractBaseActivity(), SwipeRefreshLayout.OnRefreshListen
 
         setContentView(R.layout.activity_chart)
 
-        widget = intent.getParcelableExtra(WIDGET)!!
+        widget = intent.getParcelableExtra(EXTRA_WIDGET)!!
         period = widget.period
         // If Widget#legend is null, show legend only for groups
         showLegend = widget.legend ?: widget.item?.type === Item.Type.Group
 
+        serverFlags = intent.getIntExtra(EXTRA_SERVER_FLAGS, 0)
+
         setSupportActionBar(findViewById(R.id.openhab_toolbar))
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
         supportActionBar?.title = widget.label.orDefaultIfEmpty(getString(R.string.chart_activity_title))
@@ -187,16 +190,15 @@ class ChartActivity : AbstractBaseActivity(), SwipeRefreshLayout.OnRefreshListen
     }
 
     private fun updateChartTheme() {
-        val tv = TypedValue()
-        theme.resolveAttribute(R.attr.chartTheme, tv, true)
-        chartTheme = tv.string
+        chartTheme = getChartTheme(serverFlags)
     }
 
     companion object {
         private val TAG = ChartActivity::class.java.simpleName
 
         private const val SHOW_LEGEND = "show_legend"
         private const val PERIOD = "period"
-        const val WIDGET = "widget"
+        const val EXTRA_WIDGET = "widget"
+        const val EXTRA_SERVER_FLAGS = "server_flags"
     }
 }

mobile/src/main/java/org/openhab/habdroid/ui/WidgetAdapter.kt

@@ -93,6 +93,7 @@ import org.openhab.habdroid.util.HttpClient
 import org.openhab.habdroid.util.MjpegStreamer
 import org.openhab.habdroid.util.beautify
 import org.openhab.habdroid.util.determineDataUsagePolicy
+import org.openhab.habdroid.util.getChartTheme
 import org.openhab.habdroid.util.getImageWidgetScalingType
 import org.openhab.habdroid.util.getPrefs
 import org.openhab.habdroid.util.orDefaultIfEmpty
@@ -103,6 +104,7 @@ import org.openhab.habdroid.util.orDefaultIfEmpty
 
 class WidgetAdapter(
     context: Context,
+    val serverFlags: Int,
     private val connection: Connection,
     private val itemClickListener: ItemClickListener
 ) : RecyclerView.Adapter<WidgetAdapter.ViewHolder>(), View.OnClickListener {
@@ -113,7 +115,7 @@ class WidgetAdapter(
         get() = items.any { widget -> shouldShowWidget(widget) }
 
     private val inflater = LayoutInflater.from(context)
-    private val chartTheme: CharSequence
+    private val chartTheme: CharSequence = context.getChartTheme(serverFlags)
     private var selectedPosition = RecyclerView.NO_POSITION
     private var firstVisibleWidgetPosition = RecyclerView.NO_POSITION
     private val colorMapper = ColorMapper(context)
@@ -122,12 +124,6 @@ class WidgetAdapter(
         fun onItemClicked(widget: Widget): Boolean // returns whether click was handled
     }
 
-    init {
-        val tv = TypedValue()
-        context.theme.resolveAttribute(R.attr.chartTheme, tv, true)
-        chartTheme = tv.string
-    }
-
     @SuppressLint("NotifyDataSetChanged")
     fun update(widgets: List<Widget>, forceFullUpdate: Boolean) {
         val compatibleUpdate = !forceFullUpdate &&
@@ -189,7 +185,7 @@ class WidgetAdapter(
             TYPE_SECTIONSWITCH -> SectionSwitchViewHolder(inflater, parent, connection, colorMapper)
             TYPE_ROLLERSHUTTER -> RollerShutterViewHolder(inflater, parent, connection, colorMapper)
             TYPE_SETPOINT -> SetpointViewHolder(inflater, parent, connection, colorMapper)
-            TYPE_CHART -> ChartViewHolder(inflater, parent, chartTheme, connection)
+            TYPE_CHART -> ChartViewHolder(inflater, parent, chartTheme, connection, serverFlags)
             TYPE_VIDEO -> VideoViewHolder(inflater, parent, connection)
             TYPE_WEB -> WebViewHolder(inflater, parent, connection)
             TYPE_COLOR -> ColorViewHolder(inflater, parent, connection, colorMapper)
@@ -996,7 +992,8 @@ class WidgetAdapter(
         inflater: LayoutInflater,
         parent: ViewGroup,
         private val chartTheme: CharSequence?,
-        connection: Connection
+        connection: Connection,
+        private val serverFlags: Int
     ) : HeavyDataViewHolder(inflater, parent, R.layout.widgetlist_chartitem, connection), View.OnClickListener {
         private val chart = widgetContentView as WidgetImageView
         private val prefs: SharedPreferences
@@ -1039,7 +1036,8 @@ class WidgetAdapter(
             val context = v?.context ?: return
             boundWidget?.let {
                 val intent = Intent(context, ChartActivity::class.java)
-                intent.putExtra(ChartActivity.WIDGET, it)
+                intent.putExtra(ChartActivity.EXTRA_WIDGET, it)
+                intent.putExtra(ChartActivity.EXTRA_SERVER_FLAGS, serverFlags)
                 context.startActivity(intent)
             }
         }

mobile/src/main/java/org/openhab/habdroid/ui/WidgetListFragment.kt

@@ -121,7 +121,7 @@ class WidgetListFragment : Fragment(), WidgetAdapter.ItemClickListener,
         super.onViewCreated(view, savedInstanceState)
 
         val activity = activity as MainActivity
-        adapter = activity.connection?.let { conn -> WidgetAdapter(activity, conn, this) }
+        adapter = activity.connection?.let { conn -> WidgetAdapter(activity, activity.serverProperties!!.flags, conn, this) }
 
         layoutManager = LinearLayoutManager(activity)
         layoutManager.recycleChildrenOnDetach = true

mobile/src/main/java/org/openhab/habdroid/util/ExtensionFuncs.kt

@@ -75,6 +75,7 @@ import org.openhab.habdroid.R
 import org.openhab.habdroid.core.OpenHabApplication
 import org.openhab.habdroid.model.ServerConfiguration
 import org.openhab.habdroid.model.ServerPath
+import org.openhab.habdroid.model.ServerProperties
 import org.openhab.habdroid.util.Util.TAG
 import org.w3c.dom.Node
 import org.w3c.dom.NodeList
@@ -451,6 +452,17 @@ fun Context.resolveThemedColor(@AttrRes colorAttr: Int, @ColorInt fallbackColor:
     }
 }
 
+fun Context.getChartTheme(serverFlags: Int): CharSequence {
+    val tv = TypedValue()
+    if (serverFlags and ServerProperties.SERVER_FLAG_TRANSPARENT_CHARTS == 0) {
+        theme.resolveAttribute(R.attr.chartTheme, tv, true)
+    } else {
+        theme.resolveAttribute(R.attr.transparentChartTheme, tv, true)
+    }
+
+    return tv.string
+}
+
 fun Context.isDarkModeActive(): Boolean {
     return when (getPrefs().getDayNightMode(this)) {
         AppCompatDelegate.MODE_NIGHT_NO -> false

mobile/src/main/res/values-night/themes.xml

@@ -2,6 +2,7 @@
 <resources>
     <style name="openHAB.DayNight" parent="openHAB.Base">
         <item name="chartTheme">dark</item>
+        <item name="transparentChartTheme">dark_transparent</item>
         <item name="valueColors">@array/valueColorsDarkBackground</item>
     </style>
 

mobile/src/main/res/values/attrs.xml

@@ -33,6 +33,7 @@
 
     <declare-styleable name="customAttrs">
         <attr name="chartTheme" format="string" />
+        <attr name="transparentChartTheme" format="string" />
         <attr name="valueColors" format="reference" />
         <attr name="selectedWidgetBackgroundColor" format="color" />
     </declare-styleable>

mobile/src/main/res/values/themes.xml

@@ -13,6 +13,7 @@
 
     <style name="openHAB.DayNight" parent="openHAB.Base">
         <item name="chartTheme">white</item>
+        <item name="transparentChartTheme">white_transparent</item>
         <item name="valueColors">@array/valueColorsBrightBackground</item>
     </style>
 
@@ -48,16 +49,19 @@
 
     <style name="openHAB.Black.orange" parent="openHAB.DayNight.orange">
         <item name="chartTheme">black</item>
+        <item name="transparentChartTheme">black_transparent</item>
         <item name="android:windowBackground">@color/black</item>
     </style>
 
     <style name="openHAB.Black.basicui" parent="openHAB.DayNight.basicui">
         <item name="chartTheme">black</item>
+        <item name="transparentChartTheme">black_transparent</item>
         <item name="android:windowBackground">@color/black</item>
     </style>
 
     <style name="openHAB.Black.grey" parent="openHAB.DayNight.grey">
         <item name="chartTheme">black</item>
+        <item name="transparentChartTheme">black_transparent</item>
         <item name="android:windowBackground">@color/black</item>
     </style>