[web] Librarify paragraph/text files

lib/web_ui/lib/src/engine.dart

@@ -115,6 +115,9 @@ export 'engine/pointer_binding.dart';
 // import 'engine/pointer_converter.dart';
 export 'engine/pointer_converter.dart';
 
+import 'engine/profiler.dart';
+export 'engine/profiler.dart';
+
 // This import is intentionally commented out because the analyzer says it's unused.
 // import 'engine/services/buffers.dart';
 export 'engine/services/buffers.dart';
@@ -135,6 +138,32 @@ export 'engine/shadow.dart';
 import 'engine/test_embedding.dart';
 export 'engine/test_embedding.dart';
 
+import 'engine/text/layout_service.dart';
+export 'engine/text/layout_service.dart';
+
+export 'engine/text/line_break_properties.dart';
+
+export 'engine/text/line_breaker.dart';
+
+import 'engine/text/measurement.dart';
+export 'engine/text/measurement.dart';
+
+export 'engine/text/paint_service.dart';
+
+import 'engine/text/paragraph.dart';
+export 'engine/text/paragraph.dart';
+
+export 'engine/text/canvas_paragraph.dart';
+
+export 'engine/text/ruler.dart';
+
+export 'engine/text/unicode_range.dart';
+
+export 'engine/text/word_break_properties.dart';
+
+export 'engine/text/word_breaker.dart';
+
+
 import 'engine/util.dart';
 export 'engine/util.dart';
 
@@ -253,7 +282,6 @@ part 'engine/platform_views.dart';
 part 'engine/platform_views/content_manager.dart';
 part 'engine/platform_views/message_handler.dart';
 part 'engine/platform_views/slots.dart';
-part 'engine/profiler.dart';
 part 'engine/rrect_renderer.dart';
 part 'engine/semantics/accessibility.dart';
 part 'engine/semantics/checkable.dart';
@@ -267,17 +295,6 @@ part 'engine/semantics/semantics_helper.dart';
 part 'engine/semantics/tappable.dart';
 part 'engine/semantics/text_field.dart';
 part 'engine/text/font_collection.dart';
-part 'engine/text/layout_service.dart';
-part 'engine/text/line_break_properties.dart';
-part 'engine/text/line_breaker.dart';
-part 'engine/text/measurement.dart';
-part 'engine/text/paint_service.dart';
-part 'engine/text/paragraph.dart';
-part 'engine/text/canvas_paragraph.dart';
-part 'engine/text/ruler.dart';
-part 'engine/text/unicode_range.dart';
-part 'engine/text/word_break_properties.dart';
-part 'engine/text/word_breaker.dart';
 part 'engine/text_editing/autofill_hint.dart';
 part 'engine/text_editing/input_type.dart';
 part 'engine/text_editing/text_capitalization.dart';
@@ -364,7 +381,7 @@ void initializeEngine() {
     if (!waitingForAnimation) {
       waitingForAnimation = true;
       html.window.requestAnimationFrame((num highResTime) {
-        _frameTimingsOnVsync();
+        frameTimingsOnVsync();
 
         // Reset immediately, because `frameHandler` can schedule more frames.
         waitingForAnimation = false;
@@ -379,10 +396,10 @@ void initializeEngine() {
         // In Flutter terminology "building a frame" consists of "beginning
         // frame" and "drawing frame".
         //
-        // We do not call `_frameTimingsOnBuildFinish` from here because
+        // We do not call `frameTimingsOnBuildFinish` from here because
         // part of the rasterization process, particularly in the HTML
         // renderer, takes place in the `SceneBuilder.build()`.
-        _frameTimingsOnBuildStart();
+        frameTimingsOnBuildStart();
         if (EnginePlatformDispatcher.instance._onBeginFrame != null) {
           EnginePlatformDispatcher.instance.invokeOnBeginFrame(
               Duration(microseconds: highResTimeMicroseconds));

lib/web_ui/lib/src/engine/html/bitmap_canvas.dart

@@ -241,11 +241,11 @@ class BitmapCanvas extends EngineCanvas {
   }
 
   /// Sets the global paint styles to correspond to [paint].
-  void _setUpPaint(SurfacePaintData paint, ui.Rect? shaderBounds) {
+  void setUpPaint(SurfacePaintData paint, ui.Rect? shaderBounds) {
     _canvasPool.contextHandle.setUpPaint(paint, shaderBounds);
   }
 
-  void _tearDownPaint() {
+  void tearDownPaint() {
     _canvasPool.contextHandle.tearDownPaint();
   }
 
@@ -383,9 +383,9 @@ class BitmapCanvas extends EngineCanvas {
     } else {
       ui.Rect? shaderBounds =
           (paint.shader != null) ? ui.Rect.fromPoints(p1, p2) : null;
-      _setUpPaint(paint, shaderBounds);
+      setUpPaint(paint, shaderBounds);
       _canvasPool.strokeLine(p1, p2);
-      _tearDownPaint();
+      tearDownPaint();
     }
   }
 
@@ -396,9 +396,9 @@ class BitmapCanvas extends EngineCanvas {
     } else {
       ui.Rect? shaderBounds =
           (paint.shader != null) ? _computePictureBounds() : null;
-      _setUpPaint(paint, shaderBounds);
+      setUpPaint(paint, shaderBounds);
       _canvasPool.fill();
-      _tearDownPaint();
+      tearDownPaint();
     }
   }
 
@@ -413,9 +413,9 @@ class BitmapCanvas extends EngineCanvas {
               math.min(rect.left, rect.right), math.min(rect.top, rect.bottom)),
           paint);
     } else {
-      _setUpPaint(paint, rect);
+      setUpPaint(paint, rect);
       _canvasPool.drawRect(rect, paint.style);
-      _tearDownPaint();
+      tearDownPaint();
     }
   }
 
@@ -458,17 +458,17 @@ class BitmapCanvas extends EngineCanvas {
               math.min(rect.left, rect.right), math.min(rect.top, rect.bottom)),
           paint);
     } else {
-      _setUpPaint(paint, rrect.outerRect);
+      setUpPaint(paint, rrect.outerRect);
       _canvasPool.drawRRect(rrect, paint.style);
-      _tearDownPaint();
+      tearDownPaint();
     }
   }
 
   @override
   void drawDRRect(ui.RRect outer, ui.RRect inner, SurfacePaintData paint) {
-    _setUpPaint(paint, outer.outerRect);
+    setUpPaint(paint, outer.outerRect);
     _canvasPool.drawDRRect(outer, inner, paint.style);
-    _tearDownPaint();
+    tearDownPaint();
   }
 
   @override
@@ -484,9 +484,9 @@ class BitmapCanvas extends EngineCanvas {
       element.style.borderRadius =
           '${(rect.width / 2.0)}px / ${(rect.height / 2.0)}px';
     } else {
-      _setUpPaint(paint, rect);
+      setUpPaint(paint, rect);
       _canvasPool.drawOval(rect, paint.style);
-      _tearDownPaint();
+      tearDownPaint();
     }
   }
 
@@ -503,13 +503,13 @@ class BitmapCanvas extends EngineCanvas {
           paint);
       element.style.borderRadius = '50%';
     } else {
-      _setUpPaint(
+      setUpPaint(
           paint,
           paint.shader != null
               ? ui.Rect.fromCircle(center: c, radius: radius)
               : null);
       _canvasPool.drawCircle(c, radius, paint.style);
-      _tearDownPaint();
+      tearDownPaint();
     }
   }
 
@@ -560,13 +560,13 @@ class BitmapCanvas extends EngineCanvas {
       _applyFilter(svgElm, paint);
       _drawElement(svgElm, ui.Offset(0, 0), paint);
     } else {
-      _setUpPaint(paint, paint.shader != null ? path.getBounds() : null);
+      setUpPaint(paint, paint.shader != null ? path.getBounds() : null);
       if (paint.style == null && paint.strokeWidth != null) {
         _canvasPool.drawPath(path, ui.PaintingStyle.stroke);
       } else {
         _canvasPool.drawPath(path, paint.style);
       }
-      _tearDownPaint();
+      tearDownPaint();
     }
   }
 
@@ -1009,10 +1009,10 @@ class BitmapCanvas extends EngineCanvas {
     final double strokeWidth =
         paint.strokeWidth == null ? 1.0 / dpr : paint.strokeWidth!;
     _drawPointsPaint.strokeWidth = strokeWidth;
-    _setUpPaint(_drawPointsPaint, null);
+    setUpPaint(_drawPointsPaint, null);
     // Draw point using circle with half radius.
     _canvasPool.drawPoints(pointMode, points, strokeWidth / 2.0);
-    _tearDownPaint();
+    tearDownPaint();
   }
 
   @override

lib/web_ui/lib/src/engine/html/scene_builder.dart

@@ -546,8 +546,8 @@ class SurfaceSceneBuilder implements ui.SceneBuilder {
     // In the HTML renderer we time the beginning of the rasterization phase
     // (counter-intuitively) in SceneBuilder.build because DOM updates happen
     // here. This is different from CanvasKit.
-    _frameTimingsOnBuildFinish();
-    _frameTimingsOnRasterStart();
+    frameTimingsOnBuildFinish();
+    frameTimingsOnRasterStart();
     timeAction<void>(kProfilePrerollFrame, () {
       while (_surfaceStack.length > 1) {
         // Auto-pop layers that were pushed without a corresponding pop.

lib/web_ui/lib/src/engine/platform_dispatcher.dart

@@ -568,16 +568,16 @@ class EnginePlatformDispatcher extends ui.PlatformDispatcher {
       // CanvasKit works differently from the HTML renderer in that in HTML
       // we update the DOM in SceneBuilder.build, which is these function calls
       // here are CanvasKit-only.
-      _frameTimingsOnBuildFinish();
-      _frameTimingsOnRasterStart();
+      frameTimingsOnBuildFinish();
+      frameTimingsOnRasterStart();
 
       final LayerScene layerScene = scene as LayerScene;
       rasterizer!.draw(layerScene.layerTree);
     } else {
       final SurfaceScene surfaceScene = scene as SurfaceScene;
       domRenderer.renderScene(surfaceScene.webOnlyRootElement);
     }
-    _frameTimingsOnRasterFinish();
+    frameTimingsOnRasterFinish();
   }
 
   /// Additional accessibility features that may be enabled by the platform.

lib/web_ui/lib/src/engine/profiler.dart

@@ -2,7 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-part of engine;
+import 'dart:async';
+import 'dart:html' as html;
+import 'dart:js_util' as js_util;
+
+import 'package:ui/ui.dart' as ui;
+import 'package:ui/src/engine.dart' show EnginePlatformDispatcher;
 
 /// A function that receives a benchmark [value] labeleb by [name].
 typedef OnBenchmark = void Function(String name, double value);
@@ -109,7 +114,7 @@ class Profiler {
 
 /// Whether we are collecting [ui.FrameTiming]s.
 bool get _frameTimingsEnabled {
-  return EnginePlatformDispatcher.instance._onReportTimings != null;
+  return EnginePlatformDispatcher.instance.onReportTimings != null;
 }
 
 /// Collects frame timings from frames.
@@ -133,23 +138,23 @@ int _rasterStartMicros = -1;
 int _rasterFinishMicros = -1;
 
 /// Records the vsync timestamp for this frame.
-void _frameTimingsOnVsync() {
+void frameTimingsOnVsync() {
   if (!_frameTimingsEnabled) {
     return;
   }
   _vsyncStartMicros = _nowMicros();
 }
 
 /// Records the time when the framework started building the frame.
-void _frameTimingsOnBuildStart() {
+void frameTimingsOnBuildStart() {
   if (!_frameTimingsEnabled) {
     return;
   }
   _buildStartMicros = _nowMicros();
 }
 
 /// Records the time when the framework finished building the frame.
-void _frameTimingsOnBuildFinish() {
+void frameTimingsOnBuildFinish() {
   if (!_frameTimingsEnabled) {
     return;
   }
@@ -170,7 +175,7 @@ void _frameTimingsOnBuildFinish() {
 ///
 /// CanvasKit captures everything because we control the rasterization
 /// process, so we know exactly when rasterization starts and ends.
-void _frameTimingsOnRasterStart() {
+void frameTimingsOnRasterStart() {
   if (!_frameTimingsEnabled) {
     return;
   }
@@ -181,7 +186,7 @@ void _frameTimingsOnRasterStart() {
 ///
 /// See [_frameTimingsOnRasterStart] for more details on what rasterization
 /// timings mean on the web.
-void _frameTimingsOnRasterFinish() {
+void frameTimingsOnRasterFinish() {
   if (!_frameTimingsEnabled) {
     return;
   }