flutter / engine
File Size

The distribution of size of files (measured in lines of code).

Intro
  • File size measurements show the distribution of size of files.
  • Files are classified in four categories based on their size (lines of code): 1-100 (very small files), 101-200 (small files), 201-500 (medium size files), 501-1000 (long files), 1001+(very long files).
  • It is a good practice to keep files small. Long files may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.
Learn more...
File Size Overall
  • There are 2,189 files with 268,961 lines of code.
    • 25 very long files (39,402 lines of code)
    • 76 long files (53,711 lines of code)
    • 239 medium size files (74,047 lines of codeclsfd_ftr_w_mp_ins)
    • 320 small files (45,240 lines of code)
    • 1,529 very small files (56,561 lines of code)
14% | 19% | 27% | 16% | 21%
Legend:
1001+
501-1000
201-500
101-200
1-100


explore: zoomable circles | sunburst | 3D view
File Size per Extension
1001+
501-1000
201-500
101-200
1-100
cc16% | 14% | 33% | 18% | 16%
dart22% | 31% | 23% | 13% | 8%
mm20% | 26% | 26% | 13% | 14%
java8% | 31% | 32% | 14% | 13%
h0% | 6% | 6% | 20% | 66%
gn0% | 15% | 47% | 11% | 25%
gni0% | 0% | 52% | 14% | 33%
py0% | 0% | 21% | 28% | 50%
m0% | 0% | 25% | 39% | 34%
yaml0% | 0% | 0% | 58% | 41%
html0% | 0% | 0% | 0% | 100%
css0% | 0% | 0% | 0% | 100%
c0% | 0% | 0% | 0% | 100%
File Size per Logical Decomposition
primary
1001+
501-1000
201-500
101-200
1-100
shell13% | 20% | 27% | 16% | 22%
lib16% | 29% | 26% | 14% | 12%
display_list51% | 24% | 11% | 9% | 2%
tools32% | 12% | 17% | 15% | 22%
runtime0% | 19% | 40% | 16% | 23%
testing0% | 11% | 21% | 24% | 42%
fml0% | 4% | 32% | 20% | 43%
flow0% | 0% | 44% | 27% | 27%
web_sdk0% | 0% | 44% | 49% | 5%
vulkan0% | 0% | 26% | 35% | 37%
build0% | 0% | 59% | 11% | 28%
common0% | 0% | 39% | 14% | 46%
sky0% | 0% | 29% | 31% | 38%
ROOT0% | 0% | 0% | 100% | 0%
flutter_frontend_server0% | 0% | 0% | 57% | 43%
assets0% | 0% | 0% | 0% | 100%
ci0% | 0% | 0% | 0% | 100%
benchmarking0% | 0% | 0% | 0% | 100%
Longest Files (Top 50)
File# lines# units
shell_unittests.cc
in shell/common
 2680 28
display_list_canvas_unittests.cc
in display_list
 2646 65
main.dart
in tools/licenses/lib
 2224 156
embedder.cc
in shell/platform/embedder
 2179 62
painting.dart
in lib/ui
 2146 117
AccessibilityBridge.java
in shell/platform/android/io/flutter/view
 1920 69
FlutterTextInputPlugin.mm
in shell/platform/darwin/ios/framework/Source
 1826 11
patterns.dart
in tools/licenses/lib
 1767 12
canvaskit_api.dart
in lib/web_ui/lib/src/engine/canvaskit
 1759 56
recording_canvas.dart
in lib/web_ui/lib/src/engine/html
 1634 130
text_input_model_unittests.cc
in shell/platform/common
 1507 -
shell.cc
in shell/common
 1490 72
display_list_unittests.cc
in display_list
 1387 38
FlutterViewController.mm
in shell/platform/darwin/ios/framework/Source
 1332 3
FlutterTextInputPluginTest.mm
in shell/platform/darwin/ios/framework/Source
 1327 -
platform_view_android_jni_impl.cc
in shell/platform/android
 1310 55
platform_view_unittest.cc
in shell/platform/fuchsia/flutter
 1268 33
keyboard_win32_unittests.cc
in shell/platform/windows
 1217 30
path.dart
in lib/web_ui/lib/src/engine/html/path
 1196 47
text_editing.dart
in lib/web_ui/lib/src/engine/text_editing
 1180 78
vector_math.dart
in lib/web_ui/lib/src/engine
 1162 57
text.dart
in lib/ui
 1122 35
bitmap_canvas.dart
in lib/web_ui/lib/src/engine/html
 1111 55
FlutterEngine.mm
in shell/platform/darwin/ios/framework/Source
 1010 1
display_list_benchmarks.cc
in display_list
 1002 33
semantics.dart
in lib/web_ui/lib/src/engine/semantics
 965 50
embedder.h
in shell/platform/embedder
 952 -
canvas.dart
in lib/web_ui/lib/src/engine/canvaskit
 946 109
licenses.dart
in tools/licenses/lib
 941 31
FlutterEmbedderKeyResponderUnittests.mm
in shell/platform/darwin/macos/framework/Source
 933 -
accessibility_bridge_unittest.cc
in shell/platform/fuchsia/flutter
 915 8
layout_service.dart
in lib/web_ui/lib/src/engine/text
 908 31
FlutterView.java
in shell/platform/android/io/flutter/embedding/android
 901 57
FlutterPlatformViewsTest.mm
in shell/platform/darwin/ios/framework/Source
 896 16
path_ref.dart
in lib/web_ui/lib/src/engine/html/path
 892 31
platform_dispatcher.dart
in lib/ui
 889 47
dart_isolate.cc
in runtime
 886 34
canvas_pool.dart
in lib/web_ui/lib/src/engine
 868 61
text.dart
in lib/web_ui/lib/src/engine/canvaskit
 852 25
keyboard_key_embedder_handler_unittests.cc
in shell/platform/windows
 849 3
transpiler.dart
in lib/spirv/lib/src
 843 52
flutter_glfw.cc
in shell/platform/glfw
 839 63
geometry.dart
in lib/web_ui/lib
 836 20
geometry.dart
in lib/ui
 826 22
engine.cc
in shell/platform/fuchsia/flutter
 823 18
FlutterJNI.java
in shell/platform/android/io/flutter/embedding/engine
 813 74
FlutterViewControllerTest.mm
in shell/platform/darwin/ios/framework/Source
 812 -
main.dart
in shell/platform/embedder/fixtures
 795 46
font_fallbacks.dart
in lib/web_ui/lib/src/engine/canvaskit
 787 19
surface.dart
in lib/web_ui/lib/src/engine/html
 776 43
Files With Most Units (Top 20)
File# lines# units
main.dart
in tools/licenses/lib
 2224 156
recording_canvas.dart
in lib/web_ui/lib/src/engine/html
 1634 130
painting.dart
in lib/ui
 2146 117
canvas.dart
in lib/web_ui/lib/src/engine/canvaskit
 946 109
FlutterFragment.java
in shell/platform/android/io/flutter/embedding/android
 618 79
text_editing.dart
in lib/web_ui/lib/src/engine/text_editing
 1180 78
display_list_utils.cc
in display_list
 609 78
FlutterJNI.java
in shell/platform/android/io/flutter/embedding/engine
 813 74
shell.cc
in shell/common
 1490 72
AccessibilityBridge.java
in shell/platform/android/io/flutter/view
 1920 69
safe_browser_api.dart
in lib/web_ui/lib/src/engine
 720 68
FlutterView.java
in shell/platform/android/io/flutter/view
 718 67
FlutterActivity.java
in shell/platform/android/io/flutter/embedding/android
 513 66
FlutterEngineConnectionRegistry.java
in shell/platform/android/io/flutter/embedding/engine
 750 65
display_list_canvas_unittests.cc
in display_list
 2646 65
flutter_glfw.cc
in shell/platform/glfw
 839 63
embedder.cc
in shell/platform/embedder
 2179 62
canvas_pool.dart
in lib/web_ui/lib/src/engine
 868 61
FlutterView.java
in shell/platform/android/io/flutter/embedding/android
 901 57
vector_math.dart
in lib/web_ui/lib/src/engine
 1162 57
Files With Long Lines (Top 20)

There are 43 files with lines longer than 120 characters. In total, there are 228 long lines.

File# lines# units# long lines
licenses.dart
in tools/licenses/lib
 941 31 41
text.dart
in lib/ui
 1122 35 26
scenarios.dart
in testing/scenario_app/lib/src
 65 1 23
patterns.dart
in tools/licenses/lib
 1767 12 20
main.dart
in tools/licenses/lib
 2224 156 17
display_list_unittests.cc
in display_list
 1387 38 17
painting.dart
in lib/ui
 2146 117 10
channel_buffers.dart
in lib/ui
 201 16 10
channel_buffers.dart
in lib/web_ui/lib
 204 16 10
FlutterJNI.java
in shell/platform/android/io/flutter/embedding/engine
 813 74 5
util.dart
in lib/web_ui/lib/src/engine
 448 45 5
filesystem.dart
in tools/licenses/lib
 552 12 5
gen_locale.dart
in tools
 54 1 3
main.dart
in shell/platform/embedder/fixtures
 795 46 2
verify_exported.dart
in testing/symbols
 216 4 2
geometry.dart
in lib/ui
 826 22 2
surface.dart
in lib/web_ui/lib/src/engine/html
 776 43 2
rrect_renderer.dart
in lib/web_ui/lib/src/engine
 196 10 2
generate_pom_file.py
in tools/androidx
 86 2 2
PlatformPlugin.java
in shell/platform/android/io/flutter/plugin/platform
 353 30 1