Fix precision of TextInlineViews in Android

Summary:
TextInlineViews in Android was incorrectly converting values to from float to int, this produced to loose precision and to render incomplete texts in some components.
This diff changed the types from int to float, avoiding loose precision.

The impact of this bug is not that high because in the conversion to int we were using Math.ceil(), which was already rounding the result to the next pixel.

changeLog: [Android][Fixed] Fix precision of TextInlineViews in Fabric Android

Reviewed By: JoshuaGross, shergin

Differential Revision: D21541159

fbshipit-source-id: 4741ab96964c35af1c1b7d3e821e505ecef2efce

ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java

@@ -464,7 +464,7 @@ private long measure(
       float maxWidth,
       float minHeight,
       float maxHeight,
-      @Nullable int[] attachmentsPositions) {
+      @Nullable float[] attachmentsPositions) {
     ReactContext context =
         rootTag < 0 ? mReactApplicationContext : mReactContextForRootTag.get(rootTag);
     return mMountingManager.measure(

ReactAndroid/src/main/java/com/facebook/react/fabric/mounting/MountingManager.java

@@ -519,7 +519,7 @@ public long measure(
       @NonNull YogaMeasureMode widthMode,
       float height,
       @NonNull YogaMeasureMode heightMode,
-      @Nullable int[] attachmentsPositions) {
+      @Nullable float[] attachmentsPositions) {
 
     return mViewManagerRegistry
         .get(componentName)

ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManager.java

@@ -318,7 +318,7 @@ public long measure(
       YogaMeasureMode widthMode,
       float height,
       YogaMeasureMode heightMode,
-      @Nullable int[] attachmentsPositions) {
+      @Nullable float[] attachmentsPositions) {
     return 0;
   }
 

ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderManager.java

@@ -259,7 +259,7 @@ public long measure(
       YogaMeasureMode widthMode,
       float height,
       YogaMeasureMode heightMode,
-      @Nullable int[] attachmentsPositions) {
+      @Nullable float[] attachmentsPositions) {
     SeekBar reactSlider = new ReactSlider(context, null, STYLE);
     final int spec =
         View.MeasureSpec.makeMeasureSpec(

ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchManager.java

@@ -210,7 +210,7 @@ public long measure(
       YogaMeasureMode widthMode,
       float height,
       YogaMeasureMode heightMode,
-      @Nullable int[] attachmentsPositions) {
+      @Nullable float[] attachmentsPositions) {
     ReactSwitch view = new ReactSwitch(context);
     view.setShowText(false);
     int measureSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);

ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java

@@ -120,7 +120,7 @@ public long measure(
       YogaMeasureMode widthMode,
       float height,
       YogaMeasureMode heightMode,
-      @Nullable int[] attachmentsPositions) {
+      @Nullable float[] attachmentsPositions) {
 
     return TextLayoutManager.measureText(
         context,

ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java

@@ -216,7 +216,7 @@ public static long measureText(
       float height,
       YogaMeasureMode heightYogaMeasureMode,
       ReactTextViewManagerCallback reactTextViewManagerCallback,
-      @Nullable int[] attachmentsPositions) {
+      @Nullable float[] attachmentsPositions) {
 
     // TODO(5578671): Handle text direction (see View#getTextDirectionHeuristic)
     TextPaint textPaint = sTextPaintInstance;
@@ -234,6 +234,7 @@ public static long measureText(
     if (text == null) {
       throw new IllegalStateException("Spannable element has not been prepared in onBeforeLayout");
     }
+
     BoringLayout.Metrics boring = BoringLayout.isBoring(text, textPaint);
     float desiredWidth = boring == null ? Layout.getDesiredWidth(text, textPaint) : Float.NaN;
 
@@ -412,9 +413,9 @@ public static long measureText(
 
           // The attachment array returns the positions of each of the attachments as
           attachmentsPositions[attachmentPosition] =
-              (int) Math.ceil(PixelUtil.toSPFromPixel(placeholderTopPosition));
+              PixelUtil.toSPFromPixel(placeholderTopPosition);
           attachmentsPositions[attachmentPosition + 1] =
-              (int) Math.ceil(PixelUtil.toSPFromPixel(placeholderLeftPosition));
+              PixelUtil.toSPFromPixel(placeholderLeftPosition);
           attachmentIndex++;
         }
       }

ReactCommon/fabric/attributedstring/conversions.h

@@ -611,9 +611,9 @@ inline folly::dynamic toDynamic(const AttributedString &attributedString) {
     if (fragment.isAttachment()) {
       dynamicFragment["isAttachment"] = true;
       dynamicFragment["width"] =
-          (int)fragment.parentShadowView.layoutMetrics.frame.size.width;
+          fragment.parentShadowView.layoutMetrics.frame.size.width;
       dynamicFragment["height"] =
-          (int)fragment.parentShadowView.layoutMetrics.frame.size.height;
+          fragment.parentShadowView.layoutMetrics.frame.size.height;
     }
     dynamicFragment["textAttributes"] = toDynamic(fragment.textAttributes);
     fragments.push_back(dynamicFragment);

ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp

@@ -50,7 +50,7 @@ TextMeasurement TextLayoutManager::doMeasure(
     }
   }
   auto env = Environment::current();
-  auto attachmentPositions = env->NewIntArray(attachmentsCount * 2);
+  auto attachmentPositions = env->NewFloatArray(attachmentsCount * 2);
 
   static auto measure =
       jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
@@ -64,7 +64,7 @@ TextMeasurement TextLayoutManager::doMeasure(
               jfloat,
               jfloat,
               jfloat,
-              jintArray)>("measure");
+              jfloatArray)>("measure");
 
   auto minimumSize = layoutConstraints.minimumSize;
   auto maximumSize = layoutConstraints.maximumSize;
@@ -93,7 +93,7 @@ TextMeasurement TextLayoutManager::doMeasure(
       maximumSize.height,
       attachmentPositions));
 
-  jint *attachmentData = env->GetIntArrayElements(attachmentPositions, 0);
+  jfloat *attachmentData = env->GetFloatArrayElements(attachmentPositions, 0);
 
   auto attachments = TextMeasurement::Attachments{};
   if (attachmentsCount > 0) {
@@ -104,8 +104,8 @@ TextMeasurement TextLayoutManager::doMeasure(
       if (fragment["isAttachment"] == true) {
         float top = attachmentData[attachmentIndex * 2];
         float left = attachmentData[attachmentIndex * 2 + 1];
-        float width = fragment["width"].getInt();
-        float height = fragment["height"].getInt();
+        float width = (float)fragment["width"].getDouble();
+        float height = (float)fragment["height"].getDouble();
 
         auto rect = facebook::react::Rect{{left, top},
                                           facebook::react::Size{width, height}};