+ const GlyphIndex* const charactersToGlyphBuffer = mVisualModel->mCharactersToGlyph.Begin();
+ const Length* const glyphsPerCharacterBuffer = mVisualModel->mGlyphsPerCharacter.Begin();
+ const GlyphInfo* const glyphsBuffer = mVisualModel->mGlyphs.Begin();
+ const Vector2* const positionsBuffer = mVisualModel->mGlyphPositions.Begin();
+
+ // TODO: Better algorithm to create the highlight box.
+ // TODO: Multi-line.
+
+ const Vector<LineRun>& lines = mVisualModel->mLines;
+ const LineRun& firstLine = *lines.Begin();
+ const float height = firstLine.ascender + -firstLine.descender;
+
+ const bool indicesSwapped = ( selectionStart > selectionEnd );
+ if( indicesSwapped )
+ {
+ std::swap( selectionStart, selectionEnd );
+ }
+
+ GlyphIndex glyphStart = *( charactersToGlyphBuffer + selectionStart );
+ GlyphIndex glyphEnd = *( charactersToGlyphBuffer + ( selectionEnd - 1u ) ) + *( glyphsPerCharacterBuffer + ( selectionEnd - 1u ) ) - 1u;
+
+ mEventData->mDecorator->SwapSelectionHandlesEnabled( firstLine.direction != indicesSwapped );
+
+ const Vector2 offset = mEventData->mScrollPosition + mAlignmentOffset;
+
+ for( GlyphIndex index = glyphStart; index <= glyphEnd; ++index )
+ {
+ const GlyphInfo& glyph = *( glyphsBuffer + index );
+ const Vector2& position = *( positionsBuffer + index );
+
+ const float xPosition = position.x - glyph.xBearing + offset.x;
+ mEventData->mDecorator->AddHighlight( xPosition, offset.y, xPosition + glyph.advance, height );
+ }
+
+ CursorInfo primaryCursorInfo;
+ GetCursorPosition( mEventData->mLeftSelectionPosition,
+ primaryCursorInfo );
+
+ CursorInfo secondaryCursorInfo;
+ GetCursorPosition( mEventData->mRightSelectionPosition,
+ secondaryCursorInfo );
+
+ const Vector2 primaryPosition = primaryCursorInfo.primaryPosition + offset;
+ const Vector2 secondaryPosition = secondaryCursorInfo.primaryPosition + offset;
+
+ mEventData->mDecorator->SetPosition( LEFT_SELECTION_HANDLE, primaryPosition.x, primaryPosition.y, primaryCursorInfo.lineHeight );
+
+ mEventData->mDecorator->SetPosition( RIGHT_SELECTION_HANDLE, secondaryPosition.x, secondaryPosition.y, secondaryCursorInfo.lineHeight );