feat: Phase 5 - Animation Timeline, Lottie Optimizations, and API Audit

.github/workflows/api_audit.yml

@@ -0,0 +1,31 @@
+name: API Coverage Audit
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  audit:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: recursive
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
+
+    - name: Run API Audit
+      run: |
+        python3 scripts/audit_api_coverage.py ../lvgl .
+      working-directory: ${{ github.workspace }}
+
+    - name: Check for Coverage Regressions
+      run: |
+        # Currently we just run it to ensure it passes.
+        # Future: Compare with baseline.
+        echo "API Coverage Audit Completed"

CMakeLists.txt

@@ -11,11 +11,19 @@ set(SOURCES
     font/owned_font.cpp
     misc/file_system.cpp
     core/observer.cpp
-    draw/image_decoder.cpp
+)
+
+set(DRAW_SOURCES
     draw/draw.cpp
+    draw/draw_buf.cpp
     draw/draw_task.cpp
+    draw/image_decoder.cpp
     draw/image_descriptor.cpp
-
+)
+
+list(APPEND SOURCES ${DRAW_SOURCES})
+
+set(WIDGET_SOURCES
     widgets/button.cpp
     widgets/label.cpp
     widgets/bar.cpp
@@ -60,6 +68,7 @@ set(SOURCES
     misc/theme.cpp
     misc/vector.cpp
 )
+list(APPEND SOURCES ${WIDGET_SOURCES})
 
 if(IDF_TARGET)
     idf_component_register(SRCS ${SOURCES}

design/api_coverage_report.md

@@ -34,7 +34,7 @@ The audit scans all lvgl_cpp source files (`.h` and `.cpp`) for actual usage of:
 
 | Category | Total | Used | Coverage |
 |----------|-------|------|----------|
-| **Functions** | 1,836 | 949 | **51.7%** |
+| **Functions** | 1,836 | 968 | **52.7%** |
 | **Enums and Constants** | 859 | 289 | **33.6%** |
 
 ## Function coverage