Support overflow-wrap: break-word/anywhere in case of the not fitting single glyph

DEVSIX-1438

Autoported commit.
Original commit hash: [2accef71ca]

Author: yulian-gaponenko

itext.tests/itext.layout.tests/itext/layout/renderer/TextRendererIntegrationTest.cs

@@ -406,5 +406,24 @@ public virtual void MinMaxWidthWordSplitAcrossMultipleTextRenderers() {
             NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(outFileName, cmpFileName, destinationFolder
                 ));
         }
+
+        [NUnit.Framework.Test]
+        public virtual void OverflowWrapBreakWordWithOverflowXTest() {
+            String outFileName = destinationFolder + "overflowWrapBreakWordWithOverflowXTest.pdf";
+            String cmpFileName = sourceFolder + "cmp_overflowWrapBreakWordWithOverflowXTest.pdf";
+            PdfDocument pdfDocument = new PdfDocument(new PdfWriter(outFileName));
+            Document doc = new Document(pdfDocument);
+            doc.SetFontSize(40);
+            Text text = new Text("wow");
+            Paragraph paragraph = new Paragraph().Add(text).SetBackgroundColor(ColorConstants.YELLOW).SetWidth(10).SetBorder
+                (new SolidBorder(1));
+            paragraph.SetProperty(Property.OVERFLOW_X, OverflowPropertyValue.VISIBLE);
+            paragraph.SetProperty(Property.OVERFLOW_WRAP, OverflowWrapPropertyValue.BREAK_WORD);
+            paragraph.SetProperty(Property.RENDERING_MODE, RenderingMode.HTML_MODE);
+            doc.Add(paragraph);
+            doc.Close();
+            NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(outFileName, cmpFileName, destinationFolder
+                ));
+        }
     }
 }

itext.tests/itext.layout.tests/resources/itext/layout/TextRendererIntegrationTest/cmp_overflowWrapBreakWordWithOverflowXTest.pdf

@@ -1956,10 +1956,12 @@ internal virtual LineRenderer.LastFittingChildRendererData GetIndexAndLayoutResu
                 }
             }
             if (lastAnalyzedTextLayoutResult == null) {
-                OverflowWrapPropertyValue? overflowWrapPropertyValue = childRenderers[childPos].GetProperty<OverflowWrapPropertyValue?
+                OverflowWrapPropertyValue? overflowWrapValue = childRenderers[childPos].GetProperty<OverflowWrapPropertyValue?
                     >(Property.OVERFLOW_WRAP);
-                if (overflowWrapPropertyValue == OverflowWrapPropertyValue.ANYWHERE || overflowWrapPropertyValue == OverflowWrapPropertyValue
-                    .BREAK_WORD || isOverflowFit) {
+                bool overflowWrapNotNormal = overflowWrapValue == OverflowWrapPropertyValue.ANYWHERE || overflowWrapValue 
+                    == OverflowWrapPropertyValue.BREAK_WORD;
+                if (overflowWrapNotNormal && textSequenceLayoutResults.Get(lastAnalyzedTextRenderer).GetStatus() != LayoutResult
+                    .NOTHING || isOverflowFit) {
                     lastAnalyzedTextRenderer = childPos;
                     lastAnalyzedTextLayoutResult = textSequenceLayoutResults.Get(lastAnalyzedTextRenderer);
                 }
@@ -2038,10 +2040,11 @@ internal virtual LineRenderer.LastFittingChildRendererData GetIndexAndLayoutResu
                 // otherwise return null as a flag to move forward across this.childRenderers
                 // till the end of the unbreakable word
                 if (status == LineRenderer.SpecialScriptsContainingSequenceStatus.FORCED_SPLIT) {
-                    OverflowWrapPropertyValue? overflowWrapPropertyValue = childRenderers[childPos].GetProperty<OverflowWrapPropertyValue?
+                    OverflowWrapPropertyValue? overflowWrapValue = childRenderers[childPos].GetProperty<OverflowWrapPropertyValue?
                         >(Property.OVERFLOW_WRAP);
-                    if (overflowWrapPropertyValue == OverflowWrapPropertyValue.ANYWHERE || overflowWrapPropertyValue == OverflowWrapPropertyValue
-                        .BREAK_WORD || isOverflowFit) {
+                    bool overflowWrapNotNormal = overflowWrapValue == OverflowWrapPropertyValue.ANYWHERE || overflowWrapValue 
+                        == OverflowWrapPropertyValue.BREAK_WORD;
+                    if (overflowWrapNotNormal && childPosLayoutResult.GetStatus() != LayoutResult.NOTHING || isOverflowFit) {
                         if (childPosLayoutResult.GetStatus() != LayoutResult.NOTHING) {
                             returnLayoutResult = childPosLayoutResult;
                         }

itext/itext.layout/itext/layout/renderer/LineRenderer.cs

@@ -165,8 +165,9 @@ public override LayoutResult Layout(LayoutContext layoutContext) {
             OverflowPropertyValue? overflowX = this.parent.GetProperty<OverflowPropertyValue?>(Property.OVERFLOW_X);
             OverflowWrapPropertyValue? overflowWrap = this.GetProperty<OverflowWrapPropertyValue?>(Property.OVERFLOW_WRAP
                 );
-            if (overflowWrap == OverflowWrapPropertyValue.ANYWHERE || overflowWrap == OverflowWrapPropertyValue.BREAK_WORD
-                ) {
+            bool overflowWrapNotNormal = overflowWrap == OverflowWrapPropertyValue.ANYWHERE || overflowWrap == OverflowWrapPropertyValue
+                .BREAK_WORD;
+            if (overflowWrapNotNormal) {
                 overflowX = OverflowPropertyValue.FIT;
             }
             IList<Rectangle> floatRendererAreas = layoutContext.GetFloatRendererAreas();
@@ -336,9 +337,13 @@ public override LayoutResult Layout(LayoutContext layoutContext) {
                         ) > layoutBox.GetWidth() - currentLineWidth && firstCharacterWhichExceedsAllowedWidth == -1 || ind == 
                         specialScriptFirstNotFittingIndex) {
                         firstCharacterWhichExceedsAllowedWidth = ind;
-                        if (iText.IO.Util.TextUtil.IsSpaceOrWhitespace(text.Get(ind))) {
-                            containsPossibleBreak = true;
-                            wordBreakGlyphAtLineEnding = currentGlyph;
+                        bool spaceOrWhitespace = iText.IO.Util.TextUtil.IsSpaceOrWhitespace(text.Get(ind));
+                        OverflowPropertyValue? parentOverflowX = parent.GetProperty<OverflowPropertyValue?>(Property.OVERFLOW_X);
+                        if (spaceOrWhitespace || overflowWrapNotNormal && !IsOverflowFit(parentOverflowX)) {
+                            if (spaceOrWhitespace) {
+                                containsPossibleBreak = true;
+                                wordBreakGlyphAtLineEnding = currentGlyph;
+                            }
                             if (ind == firstPrintPos) {
                                 forcePartialSplitOnFirstChar = true;
                                 firstCharacterWhichExceedsAllowedWidth = ind + 1;
@@ -886,7 +891,7 @@ public override void Draw(DrawContext drawContext) {
                 if (horizontalScaling != null && horizontalScaling != 1) {
                     canvas.SetHorizontalScaling((float)horizontalScaling * 100);
                 }
-                GlyphLine.IGlyphLineFilter filter = new _IGlyphLineFilter_948();
+                GlyphLine.IGlyphLineFilter filter = new _IGlyphLineFilter_953();
                 bool appearanceStreamLayout = true.Equals(GetPropertyAsBoolean(Property.APPEARANCE_STREAM_LAYOUT));
                 if (GetReversedRanges() != null) {
                     bool writeReversedChars = !appearanceStreamLayout;
@@ -948,8 +953,8 @@ public override void Draw(DrawContext drawContext) {
             }
         }
 
-        private sealed class _IGlyphLineFilter_948 : GlyphLine.IGlyphLineFilter {
-            public _IGlyphLineFilter_948() {
+        private sealed class _IGlyphLineFilter_953 : GlyphLine.IGlyphLineFilter {
+            public _IGlyphLineFilter_953() {
             }
 
             public bool Accept(Glyph glyph) {

itext/itext.layout/itext/layout/renderer/TextRenderer.cs

@@ -1 +1 @@
-7645d539db59517ed06defbbe092703bb8b4a3a0
+2accef71ca21aa49f48fe620b8e4fa127459a532