ADFA-4212: scale plugin tab UI text to editor font-size preference (#1386)

* ADFA-4212: scale plugin tab UI text to editor font-size preference

Author: Daniel-ADFA

app/src/main/java/com/itsaky/androidide/activities/editor/EditorHandlerActivity.kt

@@ -24,6 +24,7 @@ import android.content.res.Configuration
 import android.os.Bundle
 import android.text.TextUtils
 import android.util.Log
+import android.util.TypedValue
 import android.view.KeyEvent
 import android.view.View
 import android.view.ViewGroup.LayoutParams
@@ -32,6 +33,8 @@ import androidx.collection.MutableIntObjectMap
 import androidx.core.content.res.ResourcesCompat
 import androidx.core.view.GravityCompat
 import androidx.core.view.doOnNextLayout
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.lifecycleScope
 import com.blankj.utilcode.util.ImageUtils
 import com.google.android.material.tabs.TabLayout
@@ -63,6 +66,7 @@ import com.itsaky.androidide.eventbus.events.editor.DocumentChangeEvent
 import com.itsaky.androidide.eventbus.events.file.FileRenameEvent
 import com.itsaky.androidide.activities.PluginManagerActivity
 import com.itsaky.androidide.eventbus.events.plugin.PluginCrashedEvent
+import com.itsaky.androidide.eventbus.events.preferences.PreferenceChangeEvent
 import com.itsaky.androidide.idetooltips.TooltipManager
 import com.itsaky.androidide.idetooltips.TooltipTag
 import com.itsaky.androidide.interfaces.IEditorHandler
@@ -73,6 +77,7 @@ import com.itsaky.androidide.models.Range
 import com.itsaky.androidide.models.SaveResult
 import com.itsaky.androidide.plugins.manager.build.PluginBuildActionManager
 import com.itsaky.androidide.plugins.manager.fragment.PluginFragmentFactory
+import com.itsaky.androidide.preferences.internal.EditorPreferences
 import com.itsaky.androidide.plugins.manager.ui.PluginDrawableResolver
 import com.itsaky.androidide.plugins.manager.ui.PluginEditorTabManager
 import com.itsaky.androidide.projects.ProjectManagerImpl
@@ -90,6 +95,7 @@ import com.itsaky.androidide.utils.EditorSidebarActions
 import com.itsaky.androidide.utils.IntentUtils.openImage
 import com.itsaky.androidide.utils.UniqueNameBuilder
 import com.itsaky.androidide.utils.flashSuccess
+import com.itsaky.androidide.utils.forEachViewRecursively
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.launch
@@ -98,6 +104,7 @@ import org.adfa.constants.CONTENT_KEY
 import org.greenrobot.eventbus.Subscribe
 import org.greenrobot.eventbus.ThreadMode
 import java.io.File
+import java.util.WeakHashMap
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.CopyOnWriteArrayList
 import java.util.concurrent.atomic.AtomicBoolean
@@ -125,6 +132,22 @@ open class EditorHandlerActivity :
 
 	private val pluginTabIndices = mutableMapOf<String, Int>()
 	private val tabIndexToPluginId = mutableMapOf<Int, String>()
+	private var lastAppliedPluginFontScale = EditorPreferences.editorFontScale
+	private val pluginTextBaseSizes = WeakHashMap<TextView, Float>()
+
+	private val pluginFontScalingListener = object : FragmentManager.FragmentLifecycleCallbacks() {
+		override fun onFragmentViewCreated(
+			mFragmentManager: FragmentManager,
+			mFragment: Fragment,
+			view: View,
+			savedInstanceState: Bundle?
+		) {
+			val scale = EditorPreferences.editorFontScale
+			if (scale != 1f && isPluginFragment(mFragment)) {
+				applyPluginFontScale(view, scale)
+			}
+		}
+	}
 	private val shortcutManager by lazy { ShortcutManager(applicationContext) }
 
 	private var pluginEditorProvider: EditorProviderImpl? = null
@@ -194,6 +217,8 @@ open class EditorHandlerActivity :
 		mBuildEventListener.setActivity(this)
 		super.onCreate(savedInstanceState)
 
+		supportFragmentManager.registerFragmentLifecycleCallbacks(pluginFontScalingListener, true)
+
 		editorViewModel._displayedFile.observe(
 			this,
 		) { fileIndex ->
@@ -392,6 +417,7 @@ open class EditorHandlerActivity :
 		}
 
 		restoreOpenedPluginTabs()
+		syncPluginUiFontSize()
 	}
 
 	private fun restoreOpenedPluginTabs() {
@@ -1113,6 +1139,49 @@ open class EditorHandlerActivity :
 		showPluginCrashDialog(event)
 	}
 
+	@Subscribe(threadMode = ThreadMode.MAIN)
+	fun onPreferenceChanged(event: PreferenceChangeEvent) {
+		if (event.key == EditorPreferences.FONT_SIZE) {
+			syncPluginUiFontSize()
+		}
+	}
+
+	private fun syncPluginUiFontSize() {
+		val scale = EditorPreferences.editorFontScale
+		if (scale == lastAppliedPluginFontScale) {
+			return
+		}
+		lastAppliedPluginFontScale = scale
+
+		val pluginFragments = mutableListOf<Fragment>()
+		collectPluginFragments(supportFragmentManager, pluginFragments)
+		pluginFragments.forEach { fragment ->
+			fragment.view?.let { applyPluginFontScale(it, scale) }
+		}
+	}
+
+	private fun isPluginFragment(fragment: Fragment): Boolean =
+		fragment.javaClass.classLoader !== javaClass.classLoader
+
+	private fun applyPluginFontScale(root: View, scale: Float) {
+		root.forEachViewRecursively { view ->
+			if (view is TextView) {
+				val baseSize = pluginTextBaseSizes.getOrPut(view) { view.textSize }
+				view.setTextSize(TypedValue.COMPLEX_UNIT_PX, baseSize * scale)
+			}
+		}
+	}
+
+	private fun collectPluginFragments(manager: FragmentManager, into: MutableList<Fragment>) {
+		manager.fragments.forEach { fragment ->
+			if (isPluginFragment(fragment)) {
+				into.add(fragment)
+			} else {
+				collectPluginFragments(fragment.childFragmentManager, into)
+			}
+		}
+	}
+
 	private fun showPluginCrashDialog(event: PluginCrashedEvent) {
 		val dialogView = layoutInflater.inflate(R.layout.dialog_plugin_crash, null)
 		dialogView.findViewById<TextView>(R.id.plugin_crash_message).text =

app/src/main/java/com/itsaky/androidide/ui/CodeEditorView.kt

@@ -84,9 +84,9 @@ import java.io.Closeable
 import java.io.File
 import kotlin.math.abs
 
-private const val MIN_FONT_SIZE = 6f
-private const val DEFAULT_FONT_SIZE = 14f
-private const val MAX_FONT_SIZE = 32f
+private const val MIN_FONT_SIZE = EditorPreferences.FONT_SIZE_MIN
+private const val DEFAULT_FONT_SIZE = EditorPreferences.FONT_SIZE_DEFAULT
+private const val MAX_FONT_SIZE = EditorPreferences.FONT_SIZE_MAX
 private val ARCHIVE_EXTENSIONS = setOf("apk", "cgp", "zip")
 
 /**

preferences/src/main/java/com/itsaky/androidide/preferences/internal/EditorPreferences.kt

@@ -49,6 +49,10 @@ object EditorPreferences {
 	const val COLOR_SCHEME = "idepref_editor_colorScheme"
 	const val DEFAULT_COLOR_SCHEME = "default"
 
+	const val FONT_SIZE_MIN = 6f
+	const val FONT_SIZE_DEFAULT = 14f
+	const val FONT_SIZE_MAX = 32f
+
 	var completionsMatchLower: Boolean
 		get() = prefManager.getBoolean(COMPLETIONS_MATCH_LOWER, false)
 		set(value) {
@@ -86,11 +90,20 @@ object EditorPreferences {
 		}
 
 	var fontSize: Float
-		get() = prefManager.getFloat(FONT_SIZE, 14f)
+		get() = prefManager.getFloat(FONT_SIZE, FONT_SIZE_DEFAULT)
 		set(value) {
 			prefManager.putFloat(FONT_SIZE, value)
 		}
 
+	val effectiveFontSize: Float
+		get() {
+			val size = fontSize
+			return if (size !in FONT_SIZE_MIN..FONT_SIZE_MAX) FONT_SIZE_DEFAULT else size
+		}
+
+	val editorFontScale: Float
+		get() = effectiveFontSize / FONT_SIZE_DEFAULT
+
 	var tabSize: Int
 		get() = prefManager.getInt(TAB_SIZE, 4)
 		set(value) {