Reorganize MeasuredText API (2nd)

This is 2nd attempt of I7db9e2ca4db68a16648cfb8fcf63555f501304c2

This CL changes the MeasuredText API:
- Rename MeasuredText to PrecomputedText.
- Introduce PrecomputedText.Param which holds all text layout parameters.
- Add API to get PrecomputedText.Param from TextView.
- Remove MeasuredText.Builder and add PrecomputedText.create method instead.
- Remove setRange from MeasuredText since it is not for normal use case.
  (It can not be used for TextView)

Bug: 67504091
Bug: 72861572
Test: bit FrameworksCoreTests:android.text.
Test: atest CtsWidgetTestCases:EditTextTest \
    CtsWidgetTestCases:TextViewFadingEdgeTest \
    FrameworksCoreTests:TextViewFallbackLineSpacingTest \
    FrameworksCoreTests:TextViewTest FrameworksCoreTests:TypefaceTest \
    CtsGraphicsTestCases:TypefaceTest CtsWidgetTestCases:TextViewTest \
    CtsTextTestCases

Change-Id: Ie73bce52c6c673cda58973ddad04627a7cf2e5e9

graphics/java/android/graphics/BaseCanvas.java

@@ -22,7 +22,7 @@ import android.annotation.Nullable;
 import android.annotation.Size;
 import android.graphics.Canvas.VertexMode;
 import android.text.GraphicsOperations;
-import android.text.MeasuredText;
+import android.text.PrecomputedText;
 import android.text.SpannableString;
 import android.text.SpannedString;
 import android.text.TextUtils;
@@ -487,8 +487,8 @@ public abstract class BaseCanvas {
             TextUtils.getChars(text, contextStart, contextEnd, buf, 0);
             long measuredTextPtr = 0;
             int measuredTextOffset = 0;
-            if (text instanceof MeasuredText) {
-                MeasuredText mt = (MeasuredText) text;
+            if (text instanceof PrecomputedText) {
+                PrecomputedText mt = (PrecomputedText) text;
                 int paraIndex = mt.findParaIndex(start);
                 if (end <= mt.getParagraphEnd(paraIndex)) {
                     // Only suppor the same paragraph.
@@ -647,7 +647,7 @@ public abstract class BaseCanvas {
 
     private static native void nDrawTextRun(long nativeCanvas, char[] text, int start, int count,
             int contextStart, int contextCount, float x, float y, boolean isRtl, long nativePaint,
-            long nativeMeasuredText, int measuredTextOffset);
+            long nativePrecomputedText, int measuredTextOffset);
 
     private static native void nDrawTextOnPath(long nativeCanvas, char[] text, int index, int count,
             long nativePath, float hOffset, float vOffset, int bidiFlags, long nativePaint);

graphics/java/android/graphics/Paint.java

@@ -2835,6 +2835,16 @@ public class Paint {
         return result;
     }
 
+    /**
+     * Returns true of the passed {@link Paint} will have the same effect on text measurement
+     *
+     * @param other A {@link Paint} object.
+     * @return true if the other {@link Paint} has the same effect on text measurement.
+     */
+    public boolean equalsForTextMeasurement(@NonNull Paint other) {
+        return nEqualsForTextMeasurement(mNativePaint, other.mNativePaint);
+    }
+
     // regular JNI
     private static native long nGetNativeFinalizer();
     private static native long nInit();
@@ -3002,4 +3012,6 @@ public class Paint {
     private static native float nGetStrikeThruThickness(long paintPtr);
     @CriticalNative
     private static native void nSetTextSize(long paintPtr, float textSize);
+    @CriticalNative
+    private static native boolean nEqualsForTextMeasurement(long leftPaintPtr, long rightPaintPtr);
 }