+ const GlyphIndex currentGlyphIndex = *( mVisualModel->mCharactersToGlyph.Begin() + characterIndex );
+ const Length numberOfGlyphs = *( mVisualModel->mGlyphsPerCharacter.Begin() + characterIndex );
+ const Length numberOfCharacters = *( mVisualModel->mCharactersPerGlyph.Begin() +currentGlyphIndex );
+
+ // Get the metrics for the group of glyphs.
+ GlyphMetrics glyphMetrics;
+ GetGlyphsMetrics( currentGlyphIndex,
+ numberOfGlyphs,
+ glyphMetrics );
+
+ float interGlyphAdvance = 0.f;
+ if( !isLastPosition &&
+ ( numberOfCharacters > 1u ) )
+ {
+ const CharacterIndex firstIndex = *( mVisualModel->mGlyphsToCharacters.Begin() + currentGlyphIndex );
+ interGlyphAdvance = static_cast<float>( characterIndex - firstIndex ) * glyphMetrics.advance / static_cast<float>( numberOfCharacters );
+ }
+
+ // Get the glyph position and x bearing.
+ const Vector2& currentPosition = *( mVisualModel->mGlyphPositions.Begin() + currentGlyphIndex );
+
+ // Set the cursor's height.
+ cursorInfo.primaryCursorHeight = glyphMetrics.fontHeight;
+
+ // Set the position.
+ cursorInfo.primaryPosition.x = -glyphMetrics.xBearing + currentPosition.x + ( isCurrentRightToLeft ? glyphMetrics.advance : interGlyphAdvance );
+ cursorInfo.primaryPosition.y = line.ascender - glyphMetrics.ascender;
+
+ if( isLastPosition )
+ {
+ // The position of the cursor after the last character needs special
+ // care depending on its direction and the direction of the paragraph.
+
+ if( cursorInfo.isSecondaryCursor )
+ {
+ // Need to find the first character after the last character with the paragraph's direction.
+ // i.e l0 l1 l2 r0 r1 should find r0.
+
+ // TODO: check for more than one line!
+ characterIndex = isRightToLeftParagraph ? line.characterRun.characterIndex : line.characterRun.characterIndex + line.characterRun.numberOfCharacters - 1u;
+ characterIndex = mLogicalModel->GetLogicalCharacterIndex( characterIndex );
+
+ const GlyphIndex glyphIndex = *( mVisualModel->mCharactersToGlyph.Begin() + characterIndex );
+ const Length numberOfGlyphs = *( mVisualModel->mGlyphsPerCharacter.Begin() + characterIndex );
+
+ const Vector2& position = *( mVisualModel->mGlyphPositions.Begin() + glyphIndex );
+
+ // Get the metrics for the group of glyphs.
+ GlyphMetrics glyphMetrics;
+ GetGlyphsMetrics( glyphIndex,
+ numberOfGlyphs,
+ glyphMetrics );
+
+ cursorInfo.primaryPosition.x = -glyphMetrics.xBearing + position.x + ( isRightToLeftParagraph ? 0.f : glyphMetrics.advance );
+
+ cursorInfo.primaryPosition.y = line.ascender - glyphMetrics.ascender;
+ }
+ else
+ {
+ if( !isCurrentRightToLeft )
+ {
+ cursorInfo.primaryPosition.x += glyphMetrics.advance;
+ }
+ else
+ {
+ cursorInfo.primaryPosition.x -= glyphMetrics.advance;
+ }
+ }
+ }
+
+ // Set the alternative cursor position.
+ if( cursorInfo.isSecondaryCursor )
+ {
+ // Convert the cursor position into the glyph position.
+ const CharacterIndex previousCharacterIndex = ( ( isRightToLeftParagraph != isCurrentRightToLeft ) ? logical : previousLogical );
+ const GlyphIndex previousGlyphIndex = *( mVisualModel->mCharactersToGlyph.Begin() + previousCharacterIndex );
+ const Length numberOfGlyphs = *( mVisualModel->mGlyphsPerCharacter.Begin() + previousCharacterIndex );
+
+ // Get the glyph position.
+ const Vector2& previousPosition = *( mVisualModel->mGlyphPositions.Begin() + previousGlyphIndex );
+
+ // Get the metrics for the group of glyphs.
+ GlyphMetrics glyphMetrics;
+ GetGlyphsMetrics( previousGlyphIndex,
+ numberOfGlyphs,
+ glyphMetrics );
+
+ // Set the cursor position and height.
+ cursorInfo.secondaryPosition.x = -glyphMetrics.xBearing + previousPosition.x + ( ( ( isLastPosition && !isCurrentRightToLeft ) ||
+ ( !isLastPosition && isCurrentRightToLeft ) ) ? glyphMetrics.advance : 0.f );
+
+ cursorInfo.secondaryCursorHeight = 0.5f * glyphMetrics.fontHeight;
+
+ cursorInfo.secondaryPosition.y = cursorInfo.lineHeight - cursorInfo.secondaryCursorHeight - line.descender - ( glyphMetrics.fontHeight - glyphMetrics.ascender );
+
+ // Update the primary cursor height as well.
+ cursorInfo.primaryCursorHeight *= 0.5f;
+ }
+ }