Compute Duck.ai intro view height via TypedValue so it honors non-linear sp

Author: LukasPaczos

app/src/main/java/com/duckduckgo/app/onboarding/ui/page/BrandDesignUpdateWelcomePage.kt

@@ -403,6 +403,18 @@ class BrandDesignUpdateWelcomePage : OnboardingPageFragment(R.layout.content_onb
         }
     }
 
+    private fun sizeDuckAiIntroAnimationToTextSp() {
+        val targetTextPx = TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_SP,
+            DUCK_AI_INTRO_TEXT_SP,
+            resources.displayMetrics,
+        )
+        val viewHeightPx = (targetTextPx * DUCK_AI_INTRO_CANVAS_H / DUCK_AI_INTRO_TEXT_CANVAS_UNITS).toInt()
+        binding.duckAiIntroAnimation.updateLayoutParams {
+            height = viewHeightPx
+        }
+    }
+
     private fun prepareDuckAiIntroAnimation() {
         binding.duckAiIntroAnimation.apply {
             setTextDelegate(
@@ -495,6 +507,8 @@ class BrandDesignUpdateWelcomePage : OnboardingPageFragment(R.layout.content_onb
     ) {
         super.onViewCreated(view, savedInstanceState)
 
+        sizeDuckAiIntroAnimationToTextSp()
+
         ViewGroupCompat.installCompatInsetsDispatch(binding.root)
         if (deviceInfo.isTablet()) {
             ViewCompat.setOnApplyWindowInsetsListener(binding.root) { v, windowInsets ->
@@ -2255,6 +2269,12 @@ class BrandDesignUpdateWelcomePage : OnboardingPageFragment(R.layout.content_onb
         private const val GUIDELINE_START_PERCENT = 0.5f
         private const val GUIDELINE_END_PERCENT = 0.39125f
 
+        // Sizes the Duck.ai intro Lottie so its baked-in text renders at DUCK_AI_INTRO_TEXT_SP.
+        // Derived from the JSON's font-size scale chain: 24 * 3.4 * 0.78 * 1.085 ≈ 69 canvas units at end state.
+        private const val DUCK_AI_INTRO_TEXT_SP = 24f
+        private const val DUCK_AI_INTRO_CANVAS_H = 260f
+        private const val DUCK_AI_INTRO_TEXT_CANVAS_UNITS = 69f
+
         private const val TEXT_INTRO_DELAY = 400L
         private const val TEXT_INTRO_OPACITY_DURATION = 400L
         private const val TEXT_INTRO_TRANSLATE_DURATION = 600L