Mixed languages text crashes
Extending text to grapheme edges should correct glyph range Bug: skia:10087 Change-Id: I254901aaaa40c2782d1afbd5d5390599bdd7c922 Change-Id: I1d51076656d09e4d2e35e3ddad28bfd60fc87081 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281756 Reviewed-by: Ben Wagner <bungeman@google.com> Commit-Queue: Julia Lavrova <jlavrova@google.com>
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@ -1,4 +1,4 @@
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// Copyright 2019 Google LLC.
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// Copyright 2019 Google LLC.
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#ifndef ParagraphCache_DEFINED
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#define ParagraphCache_DEFINED
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@ -277,7 +277,6 @@ typedef size_t TextIndex;
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typedef SkRange<size_t> TextRange;
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const SkRange<size_t> EMPTY_TEXT = EMPTY_RANGE;
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struct Block {
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Block() : fRange(EMPTY_RANGE), fStyle() { }
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Block(size_t start, size_t end, const TextStyle& style) : fRange(start, end), fStyle(style) {}
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@ -10,7 +10,6 @@
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#include "include/core/SkFontMgr.h"
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#include "include/core/SkStream.h"
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#include "include/core/SkString.h"
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#include "src/core/SkFontDescriptor.h"
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namespace skia {
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namespace textlayout {
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@ -101,14 +101,15 @@ void OneLineShaper::fillGaps(size_t startingCount) {
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auto count = fUnresolvedBlocks.size();
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for (size_t i = 0; i < count; ++i) {
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auto unresolved = fUnresolvedBlocks.front();
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auto front = fUnresolvedBlocks.front();
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fUnresolvedBlocks.pop();
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fUnresolvedBlocks.push(unresolved);
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fUnresolvedBlocks.push(front);
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if (i < startingCount) {
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// Skip the first ones
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continue;
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}
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auto& unresolved = fUnresolvedBlocks.back();
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TextRange resolvedText(resolvedTextStart, fCurrentRun->leftToRight() ? unresolved.fText.start : unresolved.fText.end);
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if (resolvedText.width() > 0) {
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if (!fCurrentRun->leftToRight()) {
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@ -118,15 +119,25 @@ void OneLineShaper::fillGaps(size_t startingCount) {
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GlyphRange resolvedGlyphs(resolvedGlyphsStart, unresolved.fGlyphs.start);
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RunBlock resolved(fCurrentRun, resolvedText, resolvedGlyphs, resolvedGlyphs.width());
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if (resolvedGlyphs.width() == 0) {
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// Extend the unresolved block with an empty resolved
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if (unresolved.fText.end <= resolved.fText.start) {
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unresolved.fText.end = resolved.fText.end;
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}
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if (unresolved.fText.start >= resolved.fText.end) {
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unresolved.fText.start = resolved.fText.start;
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}
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} else {
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fResolvedBlocks.emplace_back(resolved);
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}
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}
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resolvedGlyphsStart = unresolved.fGlyphs.end;
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resolvedTextStart = fCurrentRun->leftToRight()
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? unresolved.fText.end
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: unresolved.fText.start;
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}
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TextRange resolvedText(resolvedTextStart, resolvedTextLimits.end);
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TextRange resolvedText(resolvedTextStart,resolvedTextLimits.end);
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if (resolvedText.width() > 0) {
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if (!fCurrentRun->leftToRight()) {
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std::swap(resolvedText.start, resolvedText.end);
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@ -134,7 +145,6 @@ void OneLineShaper::fillGaps(size_t startingCount) {
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GlyphRange resolvedGlyphs(resolvedGlyphsStart, fCurrentRun->size());
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RunBlock resolved(fCurrentRun, resolvedText, resolvedGlyphs, resolvedGlyphs.width());
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fResolvedBlocks.emplace_back(resolved);
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}
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}
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@ -191,8 +201,12 @@ void OneLineShaper::finish(TextRange blockText, SkScalar height, SkScalar& advan
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auto runAdvance = SkVector::Make(run->posX(glyphs.end) - run->posX(glyphs.start), run->fAdvance.fY);
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const SkShaper::RunHandler::RunInfo info = {
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run->fFont, run->fBidiLevel, runAdvance, glyphs.width(),
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SkShaper::RunHandler::Range(text.start - run->fClusterStart, text.width())};
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run->fFont,
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run->fBidiLevel,
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runAdvance,
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glyphs.width(),
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SkShaper::RunHandler::Range(text.start - run->fClusterStart, text.width())
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};
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this->fParagraph->fRuns.emplace_back(
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this->fParagraph,
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info,
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@ -249,7 +263,7 @@ TextRange OneLineShaper::normalizeTextRange(GlyphRange glyphRange) {
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return TextRange(clusterIndex(glyphRange.end - 1),
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glyphRange.start > 0
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? clusterIndex(glyphRange.start - 1)
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: fCurrentRun->fClusterStart + fCurrentRun->fTextRange.width());
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: fCurrentRun->fTextRange.end);
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}
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}
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@ -268,7 +282,7 @@ void OneLineShaper::addUnresolvedWithRun(GlyphRange glyphRange) {
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RunBlock unresolved(fCurrentRun, clusteredText(glyphRange), glyphRange, 0);
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if (unresolved.fGlyphs.width() == fCurrentRun->size()) {
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SkASSERT(unresolved.fText.width() == fCurrentRun->fTextRange.width());
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} else if (fUnresolvedBlocks.size() > 1) {
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} else if (fUnresolvedBlocks.size() > 0) {
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auto& lastUnresolved = fUnresolvedBlocks.back();
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if (lastUnresolved.fRun != nullptr &&
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lastUnresolved.fRun->fIndex == fCurrentRun->fIndex) {
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@ -278,10 +292,15 @@ void OneLineShaper::addUnresolvedWithRun(GlyphRange glyphRange) {
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lastUnresolved.fText.end = unresolved.fText.end;
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lastUnresolved.fGlyphs.end = glyphRange.end;
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return;
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} else if(lastUnresolved.fText == unresolved.fText) {
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// Nothing was resolved; ignore it
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return;
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} else if (lastUnresolved.fText.contains(unresolved.fText)) {
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// We get here for the very first unresolved piece
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return;
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} else if (lastUnresolved.fText.intersects(unresolved.fText)) {
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// Few pieces of the same unresolved text block can ignore the second one
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lastUnresolved.fGlyphs.start =
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std::min(lastUnresolved.fGlyphs.start, glyphRange.start);
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lastUnresolved.fGlyphs.start = std::min(lastUnresolved.fGlyphs.start, glyphRange.start);
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lastUnresolved.fGlyphs.end = std::max(lastUnresolved.fGlyphs.end, glyphRange.end);
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lastUnresolved.fText = clusteredText(lastUnresolved.fGlyphs);
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return;
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@ -630,7 +649,8 @@ bool OneLineShaper::shape() {
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return result;
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}
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TextRange OneLineShaper::clusteredText(GlyphRange glyphs) {
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// When we extend TextRange to the grapheme edges, we also extend glyphs range
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TextRange OneLineShaper::clusteredText(GlyphRange& glyphs) {
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enum class Dir { left, right };
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enum class Pos { inclusive, exclusive };
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@ -661,6 +681,24 @@ TextRange OneLineShaper::clusteredText(GlyphRange glyphs) {
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textRange.start = findBaseChar(textRange.start, Dir::left);
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textRange.end = findBaseChar(textRange.end, Dir::right);
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// Correct the glyphRange in case we extended the text to the grapheme edges
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// TODO: code it without if (as a part of LTR/RTL refactoring)
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if (fCurrentRun->leftToRight()) {
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while (glyphs.start > 0 && clusterIndex(glyphs.start) > textRange.start) {
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glyphs.start--;
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}
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while (glyphs.end < fCurrentRun->size() && clusterIndex(glyphs.end) < textRange.end) {
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glyphs.end++;
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}
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} else {
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while (glyphs.start > 0 && clusterIndex(glyphs.start - 1) < textRange.end) {
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glyphs.start--;
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}
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while (glyphs.end < fCurrentRun->size() && clusterIndex(glyphs.end) > textRange.start) {
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glyphs.end++;
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}
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}
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return { textRange.start, textRange.end };
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}
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@ -12,9 +12,6 @@
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namespace skia {
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namespace textlayout {
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typedef size_t GlyphIndex;
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typedef SkRange<GlyphIndex> GlyphRange;
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class ParagraphImpl;
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class OneLineShaper : public SkShaper::RunHandler {
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public:
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@ -22,7 +19,8 @@ public:
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: fParagraph(paragraph)
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, fHeight(0.0f)
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, fAdvance(SkPoint::Make(0.0f, 0.0f))
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, fUnresolvedGlyphs(0) { }
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, fUnresolvedGlyphs(0)
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, fUniqueRunId(paragraph->fRuns.size()){ }
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bool shape();
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@ -80,19 +78,18 @@ private:
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void commitLine() override {}
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Buffer runBuffer(const RunInfo& info) override {
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auto index = fUnresolvedBlocks.size() + fResolvedBlocks.size();
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fCurrentRun = std::make_shared<Run>(fParagraph,
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info,
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fCurrentText.start,
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fHeight,
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index,
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++fUniqueRunId,
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fAdvance.fX);
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return fCurrentRun->newRunBuffer();
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}
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void commitRunBuffer(const RunInfo&) override;
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TextRange clusteredText(GlyphRange glyphs);
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TextRange clusteredText(GlyphRange& glyphs);
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ClusterIndex clusterIndex(GlyphIndex glyph) {
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return fCurrentText.start + fCurrentRun->fClusterIndexes[glyph];
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}
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@ -108,6 +105,7 @@ private:
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SkScalar fHeight;
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SkVector fAdvance;
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size_t fUnresolvedGlyphs;
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size_t fUniqueRunId;
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// TODO: Something that is not thead-safe since we don't need it
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std::shared_ptr<Run> fCurrentRun;
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@ -724,8 +724,13 @@ std::vector<TextBox> ParagraphImpl::getRectsForRange(unsigned start,
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{
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// TODO: this is just a patch. Make it right later (when it's clear what and how)
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trailingSpaces = clip;
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if(run->leftToRight()) {
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trailingSpaces.fLeft = line.width();
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clip.fRight = line.width();
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} else {
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trailingSpaces.fRight = 0;
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clip.fLeft = 0;
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}
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} else if (this->fParagraphStyle.getTextDirection() == TextDirection::kRtl &&
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!run->leftToRight())
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{
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@ -124,7 +124,7 @@ std::tuple<bool, ClusterIndex, ClusterIndex> Run::findLimitingClusters(TextRange
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}
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}
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} else {
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// TODO: Do we need to use this branch?..
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// We need this branch when we draw styles for the part of a cluster
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for (auto i = fClusterRange.start; i != fClusterRange.end; ++i) {
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auto& cluster = fMaster->cluster(i);
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if (cluster.textRange().end > text.start && start == nullptr) {
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@ -9,7 +9,6 @@
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#include "modules/skparagraph/include/TextStyle.h"
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#include "modules/skshaper/include/SkShaper.h"
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#include "src/core/SkSpan.h"
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#include "src/core/SkTraceEvent.h"
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#include <functional> // std::function
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namespace skia {
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@ -33,6 +32,27 @@ typedef SkRange<GraphemeIndex> GraphemeRange;
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typedef size_t CodepointIndex;
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typedef SkRange<CodepointIndex> CodepointRange;
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typedef size_t GlyphIndex;
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typedef SkRange<GlyphIndex> GlyphRange;
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/* This is a part of future LTR/RTL refactoring
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// This is a part of a shaped text
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// Text range (a, b) can be:
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// LTR: [a:b) where a < b
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// RTL: (b:a] where a > b
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class ShapedSpan {
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public:
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ShapedSpan(Run* run, TextRange textRange, GlyphRange glyphRange)
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: fRun(run)
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, fText(textRange)
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, fGlyphs(glyphRange) { }
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private:
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Run* fRun;
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TextRange fText;
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GlyphRange fGlyphs;
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};
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*/
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struct RunShifts {
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RunShifts() { }
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RunShifts(size_t count) { fShifts.push_back_n(count, 0.0); }
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@ -227,13 +247,9 @@ class Cluster {
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public:
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enum BreakType {
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None,
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CharacterBoundary, // not yet in use (UBRK_CHARACTER)
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WordBoundary, // calculated for all clusters (UBRK_WORD)
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WordBreakWithoutHyphen, // calculated only for hyphenated words
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WordBreakWithHyphen,
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SoftLineBreak, // calculated for all clusters (UBRK_LINE)
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GraphemeBreak, // calculated for all clusters (UBRK_CHARACTER)
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SoftLineBreak, // calculated for all clusters (UBRK_LINE & UBRK_CHARACTER)
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HardLineBreak, // calculated for all clusters (UBRK_LINE)
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GraphemeBreak,
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};
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Cluster()
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@ -1,8 +1,10 @@
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// Copyright 2019 Google LLC.
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#include "modules/skparagraph/include/TypefaceFontProvider.h"
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#include <algorithm>
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#include "include/core/SkFontMgr.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypeface.h"
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#include "src/core/SkFontDescriptor.h"
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namespace skia {
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namespace textlayout {
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@ -1,6 +1,7 @@
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// Copyright 2019 Google LLC.
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#include "modules/skparagraph/include/FontCollection.h"
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#include "modules/skparagraph/include/TypefaceFontProvider.h"
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#include "src/core/SkFontDescriptor.h"
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namespace skia {
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namespace textlayout {
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File diff suppressed because one or more lines are too long
@ -1,6 +1,7 @@
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// Copyright 2019 Google LLC.
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#include <sstream>
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#include <thread>
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#include "include/core/SkFontMgr.h"
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#include "modules/skparagraph/include/TypefaceFontProvider.h"
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#include "modules/skparagraph/src/ParagraphBuilderImpl.h"
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#include "modules/skparagraph/src/ParagraphImpl.h"
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