Rewrite of the text wrapping code to work with languages which generally lack spaces, like Japanese.

Also implemented massive performance improvements to the text wrapping code.

es-app/src/guis/GuiMenu.cpp

@@ -296,7 +296,7 @@ void GuiMenu::openUIOptions()
          it != SystemData::sSystemVector.cend(); ++it) {
         if ((*it)->getName() != "retropie") {
             // If required, abbreviate the system name so it doesn't overlap the setting name.
-            float maxNameLength {mSize.x * 0.48f};
+            float maxNameLength {mSize.x * 0.51f};
             startupSystem->add((*it)->getFullName(), (*it)->getName(),
                                Settings::getInstance()->getString("StartupSystem") ==
                                    (*it)->getName(),

es-core/src/components/OptionListComponent.h

@@ -342,26 +342,8 @@ private:
                         // A maximum length parameter has been passed and the "name" size surpasses
                         // this value, so abbreviate the string inside the arrows.
                         auto font = Font::get(FONT_SIZE_MEDIUM);
-                        // Calculate with an extra dot to give some leeway.
+                        mText.setText(Utils::String::toUpper(
-                        float dotsSize {font->sizeText("....").x};
+                            font->wrapText(Utils::String::toUpper(it->name), it->maxNameLength)));
-                        std::string abbreviatedString {font->getTextMaxWidth(
-                            Utils::String::toUpper(it->name), it->maxNameLength)};
-                        float sizeDifference {font->sizeText(Utils::String::toUpper(it->name)).x -
-                                              font->sizeText(abbreviatedString).x};
-                        if (sizeDifference > 0.0f) {
-                            // It doesn't make sense to abbreviate if the number of pixels removed
-                            // by the abbreviation is less or equal to the size of the three dots
-                            // that would be appended to the string.
-                            if (sizeDifference <= dotsSize) {
-                                abbreviatedString = it->name;
-                            }
-                            else {
-                                if (abbreviatedString.back() == ' ')
-                                    abbreviatedString.pop_back();
-                                abbreviatedString += "...";
-                            }
-                        }
-                        mText.setText(Utils::String::toUpper(abbreviatedString));
                     }
                     else {
                         mText.setText(Utils::String::toUpper(it->name));

es-core/src/components/TextComponent.cpp

@@ -236,57 +236,14 @@ void TextComponent::render(const glm::mat4& parentTrans)
     }
 }
 
-void TextComponent::calculateExtent()
-{
-    if (mAutoCalcExtent.x) {
-        if (mUppercase)
-            mSize = mFont->sizeText(Utils::String::toUpper(mText), mLineSpacing);
-        else if (mLowercase)
-            mSize = mFont->sizeText(Utils::String::toLower(mText), mLineSpacing);
-        else if (mCapitalize)
-            mSize = mFont->sizeText(Utils::String::toCapitalized(mText), mLineSpacing);
-        else
-            mSize = mFont->sizeText(mText, mLineSpacing); // Original case.
-    }
-    else {
-        if (mAutoCalcExtent.y) {
-            if (mUppercase) {
-                mSize.y =
-                    mFont->sizeWrappedText(Utils::String::toUpper(mText), getSize().x, mLineSpacing)
-                        .y;
-            }
-            else if (mLowercase) {
-                mSize.y =
-                    mFont->sizeWrappedText(Utils::String::toLower(mText), getSize().x, mLineSpacing)
-                        .y;
-            }
-            else if (mCapitalize) {
-                mSize.y = mFont
-                              ->sizeWrappedText(Utils::String::toCapitalized(mText), getSize().x,
-                                                mLineSpacing)
-                              .y;
-            }
-            else {
-                mSize.y = mFont->sizeWrappedText(mText, getSize().x, mLineSpacing).y;
-            }
-        }
-    }
-}
-
 void TextComponent::onTextChanged()
 {
     if (!mVerticalAutoSizing)
         mVerticalAutoSizing = (mSize.x != 0.0f && mSize.y == 0.0f);
 
-    calculateExtent();
-
-    if (!mFont || mText.empty() || mSize.x == 0.0f || mSize.y == 0.0f) {
-        mTextCache.reset();
-        return;
-    }
-
     std::string text;
 
+    if (mText != "") {
         if (mUppercase)
             text = Utils::String::toUpper(mText);
         else if (mLowercase)
@@ -295,50 +252,35 @@ void TextComponent::onTextChanged()
             text = Utils::String::toCapitalized(mText);
         else
             text = mText; // Original case.
+    }
 
-    std::shared_ptr<Font> f {mFont};
+    if (mFont && mAutoCalcExtent.x)
-    const float lineHeight {f->getHeight(mLineSpacing)};
+        mSize = mFont->sizeText(text, mLineSpacing);
-    const bool isMultiline {mSize.y > lineHeight};
+
+    if (!mFont || text.empty() || mSize.x < 0.0f)
+        return;
+
+    std::shared_ptr<Font> font {mFont};
+    const float lineHeight {font->getHeight(mLineSpacing)};
+    const bool isMultiline {mAutoCalcExtent.y == 1 || mSize.y > lineHeight};
     const bool isScrollable {mParent && mParent->isScrollable()};
 
-    bool addAbbrev {false};
+    if (isMultiline && text.size() && !isScrollable) {
-    if (!isMultiline) {
+        const std::string wrappedText {
-        size_t newline {text.find('\n')};
+            font->wrapText(text, mSize.x, (mVerticalAutoSizing ? 0.0f : mSize.y - lineHeight),
-        // Single line of text - stop at the first newline since it'll mess everything up.
+                           mLineSpacing, isMultiline)};
-        text = text.substr(0, newline);
-        addAbbrev = newline != std::string::npos;
-    }
-
-    glm::vec2 size {f->sizeText(text)};
-    if (!isMultiline && text.size() && (size.x > mSize.x || addAbbrev)) {
-        // Abbreviate text.
-        const std::string abbrev {"..."};
-        float abbrevSize {f->sizeText(abbrev).x};
-
-        while (text.size() && size.x + abbrevSize > mSize.x) {
-            size_t newSize {Utils::String::prevCursor(text, text.size())};
-            text.erase(newSize, text.size() - newSize);
-            if (!text.empty() && text.back() == ' ')
-                text.pop_back();
-            size = f->sizeText(text);
-        }
-
-        text.append(abbrev);
-        mTextCache = std::shared_ptr<TextCache>(f->buildTextCache(
-            text, glm::vec2 {}, mColor, mSize.x, mHorizontalAlignment, mLineSpacing, mNoTopMargin));
-    }
-    else if (isMultiline && text.size() && !isScrollable) {
-        const std::string wrappedText {f->wrapText(
-            text, mSize.x, (mVerticalAutoSizing ? 0.0f : mSize.y - lineHeight), mLineSpacing)};
-        mTextCache = std::shared_ptr<TextCache>(f->buildTextCache(wrappedText, glm::vec2 {}, mColor,
-                                                                  mSize.x, mHorizontalAlignment,
-                                                                  mLineSpacing, mNoTopMargin));
-    }
-    else {
         mTextCache = std::shared_ptr<TextCache>(
-            f->buildTextCache(f->wrapText(text, mSize.x), glm::vec2 {0.0f, 0.0f}, mColor, mSize.x,
+            font->buildTextCache(wrappedText, glm::vec2 {0.0f, 0.0f}, mColor, mSize.x,
                                  mHorizontalAlignment, mLineSpacing, mNoTopMargin));
     }
+    else {
+        mTextCache = std::shared_ptr<TextCache>(font->buildTextCache(
+            font->wrapText(text, mSize.x, 0.0f, mLineSpacing, isMultiline), glm::vec2 {0.0f, 0.0f},
+            mColor, mSize.x, mHorizontalAlignment, mLineSpacing, mNoTopMargin));
+    }
+
+    if (mAutoCalcExtent.y)
+        mSize.y = font->getTextSize().y;
 
     if (mOpacity != 1.0f || mThemeOpacity != 1.0f)
         setOpacity(mOpacity);

es-core/src/components/TextComponent.h

@@ -14,13 +14,10 @@
 
 class ThemeData;
 
-// Used to display text.
+// TextComponent sizing works in the following ways:
-// TextComponent::setSize(x, y) works a little differently than most components:
+// setSize(0.0f, 0.0f)      - Automatically sizes single-line text by expanding horizontally.
-//  * (0, 0)                    - Will automatically calculate a size that fits
+// setSize(width, 0.0f)     - Limits size horizontally and automatically expands vertically.
-//                                the text on one line (expand horizontally).
+// setSize(width, height)   - Wraps and abbreviates text inside the width and height boundaries.
-//  * (x != 0, 0)               - Wrap text so that it does not reach beyond x. Will
-//                                automatically calculate a vertical size (expand vertically).
-//  * (x != 0, y <= fontHeight) - Will truncate text so it fits within this box.
 class TextComponent : public GuiComponent
 {
 public:
@@ -89,7 +86,6 @@ protected:
     std::shared_ptr<Font> mFont;
 
 private:
-    void calculateExtent();
     void onColorChanged();
 
     static inline std::vector<std::string> supportedSystemdataTypes {

es-core/src/components/TextEditComponent.cpp

@@ -27,6 +27,7 @@ TextEditComponent::TextEditComponent()
     , mBlinkTime {0}
     , mCursorRepeatDir {0}
     , mScrollOffset {0.0f, 0.0f}
+    , mCursorPos {0.0f, 0.0f}
     , mBox {":/graphics/textinput.svg"}
     , mFont {Font::get(FONT_SIZE_MEDIUM, FONT_PATH_LIGHT)}
 {
@@ -51,6 +52,9 @@ void TextEditComponent::onFocusLost()
 
 void TextEditComponent::onSizeChanged()
 {
+    if (mSize.x == 0.0f || mSize.y == 0.0f)
+        return;
+
     mBox.fitTo(
         mSize, glm::vec3 {},
         glm::vec2 {-34.0f, -32.0f - (TEXT_PADDING_VERT * Renderer::getScreenHeightModifier())});
@@ -263,9 +267,10 @@ void TextEditComponent::setCursor(size_t pos)
 
 void TextEditComponent::onTextChanged()
 {
-    std::string wrappedText = (isMultiline() ? mFont->wrapText(mText, getTextAreaSize().x) : mText);
+    mWrappedText =
+        (isMultiline() ? mFont->wrapText(mText, getTextAreaSize().x, 0.0f, 1.5f, true) : mText);
     mTextCache = std::unique_ptr<TextCache>(mFont->buildTextCache(
-        wrappedText, 0.0f, 0.0f, 0x77777700 | static_cast<unsigned char>(mOpacity * 255.0f)));
+        mWrappedText, 0.0f, 0.0f, 0x77777700 | static_cast<unsigned char>(mOpacity * 255.0f)));
 
     if (mCursor > static_cast<int>(mText.length()))
         mCursor = static_cast<int>(mText.length());
@@ -274,22 +279,23 @@ void TextEditComponent::onTextChanged()
 void TextEditComponent::onCursorChanged()
 {
     if (isMultiline()) {
-        glm::vec2 textSize {mFont->getWrappedTextCursorOffset(mText, getTextAreaSize().x, mCursor)};
+        mCursorPos = mFont->getWrappedTextCursorOffset(mWrappedText, mCursor);
 
         // Need to scroll down?
-        if (mScrollOffset.y + getTextAreaSize().y < textSize.y + mFont->getHeight())
+        if (mScrollOffset.y + getTextAreaSize().y < mCursorPos.y + mFont->getHeight())
-            mScrollOffset.y = textSize.y - getTextAreaSize().y + mFont->getHeight();
+            mScrollOffset.y = mCursorPos.y - getTextAreaSize().y + mFont->getHeight();
         // Need to scroll up?
-        else if (mScrollOffset.y > textSize.y)
+        else if (mScrollOffset.y > mCursorPos.y)
-            mScrollOffset.y = textSize.y;
+            mScrollOffset.y = mCursorPos.y;
     }
     else {
-        glm::vec2 cursorPos {mFont->sizeText(mText.substr(0, mCursor))};
+        mCursorPos = mFont->sizeText(mText.substr(0, mCursor));
+        mCursorPos.y = 0.0f;
 
-        if (mScrollOffset.x + getTextAreaSize().x < cursorPos.x)
+        if (mScrollOffset.x + getTextAreaSize().x < mCursorPos.x)
-            mScrollOffset.x = cursorPos.x - getTextAreaSize().x;
+            mScrollOffset.x = mCursorPos.x - getTextAreaSize().x;
-        else if (mScrollOffset.x > cursorPos.x)
+        else if (mScrollOffset.x > mCursorPos.x)
-            mScrollOffset.x = cursorPos.x;
+            mScrollOffset.x = mCursorPos.x;
     }
 }
 
@@ -323,25 +329,16 @@ void TextEditComponent::render(const glm::mat4& parentTrans)
     mRenderer->popClipRect();
 
     // Draw cursor.
-    glm::vec2 cursorPos;
+    float cursorHeight {mFont->getHeight() * 0.8f};
-    if (isMultiline()) {
-        cursorPos = mFont->getWrappedTextCursorOffset(mText, getTextAreaSize().x, mCursor);
-    }
-    else {
-        cursorPos = mFont->sizeText(mText.substr(0, mCursor));
-        cursorPos[1] = 0;
-    }
-
-    float cursorHeight = mFont->getHeight() * 0.8f;
 
     if (!mEditing) {
-        mRenderer->drawRect(cursorPos.x, cursorPos.y + (mFont->getHeight() - cursorHeight) / 2.0f,
+        mRenderer->drawRect(mCursorPos.x, mCursorPos.y + (mFont->getHeight() - cursorHeight) / 2.0f,
                             2.0f * Renderer::getScreenWidthModifier(), cursorHeight, 0xC7C7C7FF,
                             0xC7C7C7FF);
     }
 
     if (mEditing && mBlinkTime < BLINKTIME / 2) {
-        mRenderer->drawRect(cursorPos.x, cursorPos.y + (mFont->getHeight() - cursorHeight) / 2.0f,
+        mRenderer->drawRect(mCursorPos.x, mCursorPos.y + (mFont->getHeight() - cursorHeight) / 2.0f,
                             2.0f * Renderer::getScreenWidthModifier(), cursorHeight, 0x777777FF,
                             0x777777FF);
     }

es-core/src/components/TextEditComponent.h

@@ -59,6 +59,7 @@ private:
 
     Renderer* mRenderer;
     std::string mText;
+    std::string mWrappedText;
     std::string mTextOrig;
     bool mFocused;
     bool mEditing;
@@ -70,6 +71,7 @@ private:
     int mCursorRepeatDir;
 
     glm::vec2 mScrollOffset;
+    glm::vec2 mCursorPos;
 
     NinePatchComponent mBox;
 

es-core/src/resources/Font.cpp

@@ -20,16 +20,17 @@ std::map<std::pair<std::string, int>, std::weak_ptr<Font>> Font::sFontMap;
 
 Font::Font(int size, const std::string& path)
     : mRenderer {Renderer::getInstance()}
-    , mSize(size)
+    , mFontSize(size)
     , mMaxGlyphHeight {0}
+    , mTextSize {0.0f, 0.0f}
     , mPath(path)
 {
-    if (mSize < 9) {
+    if (mFontSize < 9) {
-        mSize = 9;
+        mFontSize = 9;
         LOG(LogWarning) << "Requested font size too small, changing to minimum supported size";
     }
-    else if (mSize > Renderer::getScreenHeight()) {
+    else if (mFontSize > Renderer::getScreenHeight()) {
-        mSize = static_cast<int>(Renderer::getScreenHeight());
+        mFontSize = static_cast<int>(Renderer::getScreenHeight());
         LOG(LogWarning) << "Requested font size too large, changing to maximum supported size";
     }
 
@@ -47,7 +48,7 @@ Font::~Font()
 {
     unload(ResourceManager::getInstance());
 
-    auto fontEntry = sFontMap.find(std::pair<std::string, int>(mPath, mSize));
+    auto fontEntry = sFontMap.find(std::pair<std::string, int>(mPath, mFontSize));
 
     if (fontEntry != sFontMap.cend())
         sFontMap.erase(fontEntry);
@@ -287,186 +288,157 @@ void Font::renderTextCache(TextCache* cache)
     }
 }
 
-std::string Font::wrapText(std::string text, float maxLength, float maxHeight, float lineSpacing)
+std::string Font::wrapText(const std::string& text,
+                           const float maxLength,
+                           const float maxHeight,
+                           const float lineSpacing,
+                           const bool multiLine)
 {
-    assert(maxLength != 0.0f);
+    assert(maxLength > 0.0f);
-
-    std::string out;
-    std::string line;
-    std::string word;
-    std::string abbreviatedWord;
-    std::string temp;
-
-    size_t space {0};
-    glm::vec2 textSize {0.0f, 0.0f};
-    const float dotsSize {sizeText("...").x};
     const float lineHeight {getHeight(lineSpacing)};
-    float accumHeight {0.0f};
+    const float dotsWidth {sizeText("...").x};
-    const bool restrictHeight {maxHeight > 0.0f};
+    float accumHeight {lineHeight};
-    bool skipLastLine {false};
-    float currLineLength {0.0f};
-
-    // While there's text or we still have text to render.
-    while (text.length() > 0) {
-        if (restrictHeight && accumHeight > maxHeight)
-            break;
-
-        space = text.find_first_of(" \t\n");
-
-        if (space == std::string::npos) {
-            space = text.length() - 1;
-        }
-        else if (restrictHeight) {
-            if (text.at(space) == '\n')
-                accumHeight += lineHeight;
-        }
-
-        word = text.substr(0, space + 1);
-        text.erase(0, space + 1);
-
-        temp = line + word;
-
-        textSize = sizeText(temp);
-
-        // If the word will fit on the line, add it to our line and continue.
-        if (textSize.x <= maxLength) {
-            line = temp;
-            currLineLength = textSize.x;
-            continue;
-        }
-        else {
-            // If the word is too long to fit within maxLength then abbreviate it.
-            float wordSize {sizeText(word).x};
-            if (restrictHeight && currLineLength != 0.0f && maxHeight < lineHeight &&
-                wordSize > maxLength - textSize.x) {
-                // Multi-word lines.
-                if (maxLength - currLineLength + dotsSize < wordSize &&
-                    sizeText(line).x + dotsSize > maxLength) {
-                    while (sizeText(line).x + dotsSize > maxLength)
-                        line.pop_back();
-                }
-                else {
-                    while (word != "" && wordSize + dotsSize > maxLength - currLineLength) {
-                        word.pop_back();
-                        wordSize = sizeText(word).x;
-                    }
-
-                    line = line + word;
-                }
-
-                if (line.back() == ' ')
-                    line.pop_back();
-
-                line.append("...");
-                break;
-            }
-            if (wordSize > maxLength) {
-
-                if (line != "" && line.back() != '\n') {
-                    if (restrictHeight) {
-                        if (accumHeight + lineHeight > maxHeight)
-                            continue;
-                        accumHeight += lineHeight;
-                    }
-                    line.append("\n");
-                }
-
-                const float cutTarget {wordSize - maxLength + dotsSize};
-                float cutSize {0.0f};
-
-                while (word != "" && cutSize < cutTarget) {
-                    cutSize += sizeText(word.substr(word.size() - 1)).x;
-                    word.pop_back();
-                }
-
-                word.append("...");
-                line = line + word;
-                continue;
-            }
-            else {
-                out += line + '\n';
-                if (restrictHeight)
-                    accumHeight += lineHeight;
-
-                if (restrictHeight && accumHeight > maxHeight) {
-                    out.pop_back();
-                    skipLastLine = true;
-                    break;
-                }
-            }
-            line = word;
-        }
-    }
-
-    // Whatever's left should fit.
-    if (!skipLastLine)
-        out.append(line);
-
-    if (restrictHeight && out.back() == '\n')
-        out.pop_back();
-
-    // If the text has been abbreviated vertically then add "..." at the end of the string.
-    if (restrictHeight && accumHeight > maxHeight) {
-        if (out.back() != '\n') {
-            float cutSize {0.0f};
-            float cutTarget {sizeText(line).x - maxLength + dotsSize};
-            while (cutSize < cutTarget) {
-                cutSize += sizeText(out.substr(out.size() - 1)).x;
-                out.pop_back();
-            }
-        }
-        if (out.back() == ' ')
-            out.pop_back();
-        out.append("...");
-    }
-
-    return out;
-}
-
-glm::vec2 Font::sizeWrappedText(std::string text, float xLen, float lineSpacing)
-{
-    text = wrapText(text, xLen);
-    return sizeText(text, lineSpacing);
-}
-
-glm::vec2 Font::getWrappedTextCursorOffset(std::string text,
-                                           float xLen,
-                                           size_t stop,
-                                           float lineSpacing)
-{
-    std::string wrappedText {wrapText(text, xLen)};
-
     float lineWidth {0.0f};
-    float y {0.0f};
+    float charWidth {0.0f};
-
+    float lastSpacePos {0.0f};
-    size_t wrapCursor {0};
+    unsigned int charID {0};
     size_t cursor {0};
-    while (cursor < stop) {
+    size_t lastSpace {0};
-        unsigned int wrappedCharacter {Utils::String::chars2Unicode(wrappedText, wrapCursor)};
+    size_t spaceAccum {0};
-        unsigned int character {Utils::String::chars2Unicode(text, cursor)};
+    size_t byteCount {0};
+    std::string wrappedText;
+    std::string charEntry;
+    std::vector<std::pair<int, float>> dotsSection;
+    bool addDots {false};
 
-        if (wrappedCharacter == '\n' && character != '\n') {
+    for (size_t i = 0; i < text.length(); ++i) {
-            // This is where the wordwrap inserted a newline
+        if (text[i] == '\n') {
-            // Reset lineWidth and increment y, but don't consume .a cursor character.
+            wrappedText.append("\n");
+            accumHeight += lineHeight;
             lineWidth = 0.0f;
-            y += getHeight(lineSpacing);
+            lastSpace = 0;
-
-            cursor = Utils::String::prevCursor(text, cursor); // Unconsume.
             continue;
         }
 
+        charWidth = 0.0f;
+        byteCount = 0;
+        cursor = i;
+
+        // Needed to handle multi-byte Unicode characters.
+        charID = Utils::String::chars2Unicode(text, cursor);
+        charEntry = text.substr(i, cursor - i);
+
+        Glyph* glyph {getGlyph(charID)};
+        if (glyph != nullptr) {
+            charWidth = glyph->advance.x;
+            byteCount = cursor - i;
+        }
+        else {
+            // Missing glyph.
+            continue;
+        }
+
+        if (multiLine && (charEntry == " " || charEntry == "\t")) {
+            lastSpace = i;
+            lastSpacePos = lineWidth;
+        }
+
+        if (lineWidth + charWidth <= maxLength) {
+            if (lineWidth + charWidth + dotsWidth > maxLength)
+                dotsSection.emplace_back(std::make_pair(byteCount, charWidth));
+            lineWidth += charWidth;
+            wrappedText.append(charEntry);
+        }
+        else if (!multiLine) {
+            addDots = true;
+            break;
+        }
+        else {
+            if (maxHeight == 0.0f || accumHeight < maxHeight) {
+                // New row.
+                float spaceOffset {0.0f};
+                if (lastSpace == wrappedText.size()) {
+                    wrappedText.append("\n");
+                }
+                else if (lastSpace != 0) {
+                    if (lastSpace + spaceAccum == wrappedText.size())
+                        wrappedText.append("\n");
+                    else
+                        wrappedText[lastSpace + spaceAccum] = '\n';
+                    spaceOffset = lineWidth - lastSpacePos;
+                }
+                else {
+                    if (lastSpace == 0)
+                        ++spaceAccum;
+                    wrappedText.append("\n");
+                }
+                if (charEntry != " " && charEntry != "\t") {
+                    wrappedText.append(charEntry);
+                    lineWidth = charWidth;
+                }
+                else {
+                    lineWidth = 0.0f;
+                }
+                accumHeight += lineHeight;
+                lineWidth += spaceOffset;
+                lastSpacePos = 0.0f;
+                lastSpace = 0;
+            }
+            else {
+                if (multiLine)
+                    addDots = true;
+                break;
+            }
+        }
+
+        i = cursor - 1;
+    }
+
+    if (addDots) {
+        if (wrappedText.back() == ' ') {
+            lineWidth -= sizeText(" ").x;
+            wrappedText.pop_back();
+        }
+        else if (wrappedText.back() == '\t') {
+            lineWidth -= sizeText("\t").x;
+            wrappedText.pop_back();
+        }
+        while (!dotsSection.empty() && lineWidth + dotsWidth > maxLength) {
+            lineWidth -= dotsSection.back().second;
+            wrappedText.erase(wrappedText.length() - dotsSection.back().first);
+            dotsSection.pop_back();
+        }
+        if (!wrappedText.empty() && wrappedText.back() == ' ')
+            wrappedText.pop_back();
+        wrappedText.append("...");
+    }
+
+    mTextSize = {maxLength, accumHeight};
+    return wrappedText;
+}
+
+glm::vec2 Font::getWrappedTextCursorOffset(const std::string& wrappedText,
+                                           const size_t stop,
+                                           const float lineSpacing)
+{
+    float lineWidth {0.0f};
+    float yPos {0.0f};
+    size_t cursor {0};
+
+    while (cursor < stop) {
+        unsigned int character {Utils::String::chars2Unicode(wrappedText, cursor)};
         if (character == '\n') {
             lineWidth = 0.0f;
-            y += getHeight(lineSpacing);
+            yPos += getHeight(lineSpacing);
             continue;
         }
 
-        Glyph* glyph = getGlyph(character);
+        Glyph* glyph {getGlyph(character)};
         if (glyph)
             lineWidth += glyph->advance.x;
     }
 
-    return glm::vec2 {lineWidth, y};
+    return glm::vec2 {lineWidth, yPos};
 }
 
 float Font::getHeight(float lineSpacing) const
@@ -491,7 +463,7 @@ std::shared_ptr<Font> Font::getFromTheme(const ThemeData::ThemeElement* elem,
         return orig;
 
     std::shared_ptr<Font> font;
-    int size {static_cast<int>(orig ? orig->mSize : FONT_SIZE_MEDIUM)};
+    int size {static_cast<int>(orig ? orig->mFontSize : FONT_SIZE_MEDIUM)};
     std::string path {orig ? orig->mPath : getDefaultPath()};
 
     float sh {static_cast<float>(Renderer::getScreenHeight())};
@@ -546,7 +518,7 @@ size_t Font::getTotalMemUsage()
     return total;
 }
 
-Font::FontTexture::FontTexture(const int mSize)
+Font::FontTexture::FontTexture(const int mFontSize)
 {
     textureId = 0;
 
@@ -562,10 +534,11 @@ Font::FontTexture::FontTexture(const int mSize)
     if (screenSizeModifier < 0.45f)
         extraTextureSize += 4;
 
-    // It's not entirely clear if the 20 and 16 constants are correct, but they seem to provide
+    // It's not entirely clear if the 20 and 22 constants are correct, but they seem to provide
     // a texture buffer large enough to hold the fonts. This logic is obviously a hack though
     // and needs to be properly reviewed and improved.
-    textureSize = glm::ivec2 {mSize * (20 + extraTextureSize), mSize * (16 + extraTextureSize / 2)};
+    textureSize =
+        glm::ivec2 {mFontSize * (20 + extraTextureSize), mFontSize * (22 + extraTextureSize / 2)};
 
     // Make sure the size is not unreasonably large (which may be caused by a mistake in the
     // theme configuration).
@@ -704,7 +677,7 @@ void Font::getTextureForNewGlyph(const glm::ivec2& glyphSize,
         return;
     }
 
-    mTextures.push_back(FontTexture(mSize));
+    mTextures.push_back(FontTexture(mFontSize));
     tex_out = &mTextures.back();
     tex_out->initTexture();
 
@@ -731,7 +704,7 @@ FT_Face Font::getFaceForChar(unsigned int id)
             // Otherwise, take from fallbackFonts.
             const std::string& path {i == 0 ? mPath : fallbackFonts.at(i - 1)};
             ResourceData data {ResourceManager::getInstance().getFileData(path)};
-            mFaceCache[i] = std::unique_ptr<FontFace>(new FontFace(std::move(data), mSize));
+            mFaceCache[i] = std::unique_ptr<FontFace>(new FontFace(std::move(data), mFontSize));
             fit = mFaceCache.find(i);
         }
 
@@ -762,7 +735,7 @@ Font::Glyph* Font::getGlyph(const unsigned int id)
 
     if (FT_Load_Char(face, id, FT_LOAD_RENDER)) {
         LOG(LogError) << "Couldn't find glyph for character " << id << " for font " << mPath
-                      << ", size " << mSize;
+                      << ", size " << mFontSize;
         return nullptr;
     }
 
@@ -776,7 +749,7 @@ Font::Glyph* Font::getGlyph(const unsigned int id)
     // size (absurdly large font size).
     if (tex == nullptr) {
         LOG(LogError) << "Couldn't create glyph for character " << id << " for font " << mPath
-                      << ", size " << mSize << " (no suitable texture found)";
+                      << ", size " << mFontSize << " (no suitable texture found)";
         return nullptr;
     }
 

es-core/src/resources/Font.h

@@ -52,6 +52,9 @@ public:
     // Returns the portion of a string that fits within the passed argument maxWidth.
     std::string getTextMaxWidth(std::string text, float maxWidth);
 
+    // Returns the size of the overall text area.
+    const glm::vec2 getTextSize() { return mTextSize; }
+
     TextCache* buildTextCache(const std::string& text,
                               float offsetX,
                               float offsetY,
@@ -69,20 +72,17 @@ public:
 
     void renderTextCache(TextCache* cache);
 
-    // Inserts newlines into text to make it wrap properly.
+    // Inserts newlines to make text wrap properly and also abbreviates single-line text.
-    std::string wrapText(std::string text,
+    std::string wrapText(const std::string& text,
-                         float maxLength,
+                         const float maxLength,
-                         float maxHeight = 0.0f,
+                         const float maxHeight = 0.0f,
-                         float lineSpacing = 1.5f);
+                         const float lineSpacing = 1.5f,
+                         const bool multiLine = false);
 
-    // Returns the expected size of a string after wrapping is applied.
+    // Returns the position of the cursor after moving it to the stop position.
-    glm::vec2 sizeWrappedText(std::string text, float xLen, float lineSpacing = 1.5f);
+    glm::vec2 getWrappedTextCursorOffset(const std::string& wrappedText,
-
+                                         const size_t stop,
-    // Returns the position of the cursor after moving a "cursor" amount of characters.
+                                         const float lineSpacing = 1.5f);
-    glm::vec2 getWrappedTextCursorOffset(std::string text,
-                                         float xLen,
-                                         size_t cursor,
-                                         float lineSpacing = 1.5f);
 
     float getHeight(float lineSpacing = 1.5f) const;
     float getLetterHeight();
@@ -90,7 +90,7 @@ public:
     void reload(ResourceManager& rm) override { rebuildTextures(); }
     void unload(ResourceManager& rm) override { unloadTextures(); }
 
-    int getSize() const { return mSize; }
+    int getSize() const { return mFontSize; }
     const std::string& getPath() const { return mPath; }
     static std::string getDefaultPath() { return FONT_PATH_REGULAR; }
 
@@ -117,7 +117,7 @@ private:
         glm::ivec2 writePos;
         int rowHeight;
 
-        FontTexture(const int mSize);
+        FontTexture(const int mFontSize);
         ~FontTexture();
         bool findEmpty(const glm::ivec2& size, glm::ivec2& cursor_out);
 
@@ -165,8 +165,9 @@ private:
     std::map<unsigned int, Glyph> mGlyphMap;
     Glyph* getGlyph(const unsigned int id);
 
-    int mSize;
+    int mFontSize;
     int mMaxGlyphHeight;
+    glm::vec2 mTextSize;
     const std::string mPath;
 
     float getNewlineStartOffset(const std::string& text,