Add WidgetIconProvider

app/src/main/AndroidManifest.xml

@@ -387,6 +387,13 @@
         android:resource="@xml/file_provider_paths"/>
     </provider>
 
+    <provider
+        android:name=".widget.WidgetIconProvider"
+        android:authorities="${applicationId}.widgeticons"
+        android:exported="true"
+        android:grantUriPermissions="true"
+        tools:ignore="ExportedContentProvider" />
+
     <receiver
       android:name="org.dmfs.provider.tasks.TaskProviderBroadcastReceiver"
       tools:node="remove"/>

app/src/main/java/org/tasks/widget/WidgetChipProvider.kt

@@ -3,7 +3,6 @@ package org.tasks.widget
 import android.content.Context
 import android.widget.RemoteViews
 import androidx.annotation.ColorInt
-import com.mikepenz.iconics.IconicsDrawable
 import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.runBlocking
 import org.tasks.BuildConfig
@@ -19,7 +18,6 @@ import org.tasks.filters.Filter
 import org.tasks.filters.PlaceFilter
 import org.tasks.filters.TagFilter
 import org.tasks.filters.getIcon
-import org.tasks.icons.OutlinedGoogleMaterial
 import org.tasks.kmp.org.tasks.time.getRelativeDateTime
 import org.tasks.kmp.org.tasks.time.getTimeString
 import org.tasks.time.startOfDay
@@ -115,14 +113,16 @@ class WidgetChipProvider @Inject constructor(
             setTextViewText(R.id.chip_text, filter.title)
             filter
                 .getIcon(inventory)
-                ?.let {
+                ?.let { iconName ->
                     try {
-                        OutlinedGoogleMaterial.getIcon("gmo_$it")
-                    } catch (_: IllegalArgumentException) {
-                        null
+                        val iconUri = WidgetIconProvider.getIconUri(
+                            iconName = iconName,
+                        )
+                        setImageViewUri(R.id.chip_icon, iconUri)
+                    } catch (_: Exception) {
+                        setImageViewResource(R.id.chip_icon, defaultIcon)
                     }
                 }
-                ?.let { setImageViewBitmap(R.id.chip_icon, IconicsDrawable(context, it).toBitmap()) }
                 ?: setImageViewResource(R.id.chip_icon, defaultIcon)
         }
 
@@ -138,4 +138,4 @@ class WidgetChipProvider @Inject constructor(
         setColorFilter(R.id.chip_background, tint)
         setTextColor(R.id.chip_text, tint)
     }
-}
+}

app/src/main/java/org/tasks/widget/WidgetIconProvider.kt

@@ -0,0 +1,118 @@
+package org.tasks.widget
+
+import android.content.ContentProvider
+import android.content.ContentValues
+import android.database.Cursor
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.net.Uri
+import android.os.ParcelFileDescriptor
+import androidx.core.graphics.createBitmap
+import androidx.core.net.toUri
+import com.mikepenz.iconics.IconicsDrawable
+import com.mikepenz.iconics.utils.sizeDp
+import org.tasks.BuildConfig
+import org.tasks.icons.OutlinedGoogleMaterial
+import timber.log.Timber
+import java.io.File
+import java.io.FileOutputStream
+
+class WidgetIconProvider : ContentProvider() {
+
+    override fun onCreate() = true
+
+    override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor? {
+        if (mode != "r") {
+            throw SecurityException("Only read access allowed")
+        }
+
+        return try {
+            val segments = uri.pathSegments
+            if (segments.size != 2) return null
+
+            val iconName = segments[1]
+
+            if (!iconName.matches(Regex("^[a-zA-Z0-9_]+$"))) return null
+
+            val cacheFile = getCacheFile(iconName)
+
+            if (!cacheFile.exists()) {
+                generateIcon(cacheFile, iconName)
+            }
+
+            if (cacheFile.exists()) {
+                ParcelFileDescriptor.open(cacheFile, ParcelFileDescriptor.MODE_READ_ONLY)
+            } else {
+                null
+            }
+        } catch (e: Exception) {
+            Timber.e(e, "Failed to open icon file for URI: $uri")
+            null
+        }
+    }
+
+    private fun generateIcon(file: File, iconName: String) {
+        try {
+            val icon = OutlinedGoogleMaterial.getIcon("gmo_$iconName")
+            val context = context ?: return
+
+            val drawable = IconicsDrawable(context, icon).apply {
+                this.sizeDp = 24
+            }
+
+            val bitmap = createBitmap(
+                drawable.intrinsicWidth.coerceAtLeast(1),
+                drawable.intrinsicHeight.coerceAtLeast(1)
+            )
+
+            val canvas = Canvas(bitmap)
+            drawable.setBounds(0, 0, canvas.width, canvas.height)
+            drawable.draw(canvas)
+
+            file.parentFile?.mkdirs()
+            FileOutputStream(file).use { out ->
+                bitmap.compress(Bitmap.CompressFormat.PNG, 100, out)
+            }
+            bitmap.recycle()
+        } catch (e: Exception) {
+            Timber.e(e, "Failed to generate icon: $iconName")
+            file.delete()
+        }
+    }
+
+    private fun getCacheFile(iconName: String): File {
+        val context = context ?: throw IllegalStateException("Context is null")
+        val cacheDir = File(context.cacheDir, "widget_icons")
+        cacheDir.mkdirs()
+        return File(cacheDir, "${iconName}.png")
+    }
+
+    override fun query(
+        uri: Uri,
+        projection: Array<out String>?,
+        selection: String?,
+        selectionArgs: Array<out String>?,
+        sortOrder: String?,
+    ): Cursor? = null
+
+    override fun insert(uri: Uri, values: ContentValues?): Uri? = null
+
+    override fun update(
+        uri: Uri,
+        values: ContentValues?,
+        selection: String?,
+        selectionArgs: Array<out String>?,
+    ): Int = 0
+
+    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<out String>?): Int = 0
+
+    override fun getType(uri: Uri): String = "image/png"
+
+    companion object {
+        const val AUTHORITY = "${BuildConfig.APPLICATION_ID}.widgeticons"
+
+        fun getIconUri(iconName: String): Uri {
+            return "content://$AUTHORITY/icon/$iconName".toUri()
+        }
+    }
+}