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Merge "Fix measurement to respect grapheme and span boundaries" into mnc-dr1.5-dev

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am: 36c5ab3542

* commit '36c5ab3542624f9634106390fa34482babe2d8d3':
  Fix measurement to respect grapheme and span boundaries
This commit is contained in:
Raph Levien
2016-01-12 01:13:37 +00:00
committed by android-build-merger
parent 1f1cbc01c1 36c5ab3542
commit 50c22adc25
1 changed files with 10 additions and 8 deletions
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18
core/java/android/text/TextLine.java
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@@ -718,13 +718,14 @@ class TextLine {
* @param bottom the bottom of the line
* @param fmi receives metrics information, can be null
* @param needWidth true if the width of the run is needed
* @param offset the offset for the purpose of measuring
* @return the signed width of the run based on the run direction; only
* valid if needWidth is true
*/
private float handleText(TextPaint wp, int start, int end,
int contextStart, int contextEnd, boolean runIsRtl,
Canvas c, float x, int top, int y, int bottom,
FontMetricsInt fmi, boolean needWidth) {
FontMetricsInt fmi, boolean needWidth, int offset) {
// Get metrics first (even for empty strings or "0" width runs)
if (fmi != null) {
@@ -742,11 +743,11 @@ class TextLine {
if (needWidth || (c != null && (wp.bgColor != 0 || wp.underlineColor != 0 || runIsRtl))) {
if (mCharsValid) {
ret = wp.getRunAdvance(mChars, start, end, contextStart, contextEnd,
runIsRtl, end);
runIsRtl, offset);
} else {
int delta = mStart;
ret = wp.getRunAdvance(mText, delta + start, delta + end,
delta + contextStart, delta + contextEnd, runIsRtl, delta + end);
delta + contextStart, delta + contextEnd, runIsRtl, delta + offset);
}
}
@@ -895,8 +896,8 @@ class TextLine {
TextPaint wp = mWorkPaint;
wp.set(mPaint);
final int mlimit = measureLimit;
return handleText(wp, start, mlimit, start, limit, runIsRtl, c, x, top,
y, bottom, fmi, needWidth || mlimit < measureLimit);
return handleText(wp, start, limit, start, limit, runIsRtl, c, x, top,
y, bottom, fmi, needWidth || mlimit < measureLimit, mlimit);
}
mMetricAffectingSpanSpanSet.init(mSpanned, mStart + start, mStart + limit);
@@ -940,13 +941,14 @@ class TextLine {
}
for (int j = i, jnext; j < mlimit; j = jnext) {
jnext = mCharacterStyleSpanSet.getNextTransition(mStart + j, mStart + mlimit) -
jnext = mCharacterStyleSpanSet.getNextTransition(mStart + j, mStart + inext) -
mStart;
int offset = Math.min(jnext, mlimit);
wp.set(mPaint);
for (int k = 0; k < mCharacterStyleSpanSet.numberOfSpans; k++) {
// Intentionally using >= and <= as explained above
if ((mCharacterStyleSpanSet.spanStarts[k] >= mStart + jnext) ||
if ((mCharacterStyleSpanSet.spanStarts[k] >= mStart + offset) ||
(mCharacterStyleSpanSet.spanEnds[k] <= mStart + j)) continue;
CharacterStyle span = mCharacterStyleSpanSet.spans[k];
@@ -958,7 +960,7 @@ class TextLine {
wp.setHyphenEdit(0);
}
x += handleText(wp, j, jnext, i, inext, runIsRtl, c, x,
top, y, bottom, fmi, needWidth || jnext < measureLimit);
top, y, bottom, fmi, needWidth || jnext < measureLimit, offset);
}
}