namespace lyx {
namespace frontend {
+struct TextLayoutHelper;
+
+struct BreakStringKey
+{
+ bool operator==(BreakStringKey const & key) const {
+ return key.s == s && key.first_wid == first_wid && key.wid == wid
+ && key.rtl == rtl && key.force == force;
+ }
+
+ docstring s;
+ int first_wid;
+ int wid;
+ bool rtl;
+ bool force;
+};
+
+struct TextLayoutKey
+{
+ bool operator==(TextLayoutKey const & key) const {
+ return key.s == s && key.rtl == rtl && key.ws == ws;
+ }
+
+ docstring s;
+ bool rtl;
+ double ws;
+};
+
+
class GuiFontMetrics : public FontMetrics
{
public:
virtual ~GuiFontMetrics() {}
- virtual int maxAscent() const;
- virtual int maxDescent() const;
- virtual Dimension const defaultDimension() const;
- virtual int em() const;
- virtual int xHeight() const;
- virtual int lineWidth() const;
- virtual int underlinePos() const;
- virtual int strikeoutPos() const;
- virtual bool italic() const;
- virtual int width(char_type c) const;
- virtual int ascent(char_type c) const;
- virtual int descent(char_type c) const;
- virtual int lbearing(char_type c) const;
- virtual int rbearing(char_type c) const;
- virtual int width(docstring const & s) const;
- virtual int signedWidth(docstring const & s) const;
- virtual int pos2x(docstring const & s, int pos, bool rtl, double ws) const;
- virtual int x2pos(docstring const & s, int & x, bool rtl, double ws) const;
- virtual bool breakAt(docstring & s, int & x, bool rtl, bool force) const;
- virtual Dimension const dimension(char_type c) const;
-
- virtual void rectText(docstring const & str,
+ int maxAscent() const override;
+ int maxDescent() const override;
+ Dimension const defaultDimension() const override;
+ int em() const override;
+ int xHeight() const override;
+ int lineWidth() const override;
+ int underlinePos() const override;
+ int strikeoutPos() const override;
+ bool italic() const override;
+ double italicSlope() const override;
+ int width(char_type c) const override;
+ int ascent(char_type c) const override;
+ int descent(char_type c) const override;
+ int lbearing(char_type c) const override;
+ int rbearing(char_type c) const override;
+ int width(docstring const & s) const override;
+ int signedWidth(docstring const & s) const override;
+ int pos2x(docstring const & s, int pos, bool rtl, double ws) const override;
+ int x2pos(docstring const & s, int & x, bool rtl, double ws) const override;
+ Breaks breakString(docstring const & s, int first_wid, int wid, bool rtl, bool force) const override;
+ Dimension const dimension(char_type c) const override;
+
+ void rectText(docstring const & str,
int & width,
int & ascent,
- int & descent) const;
- virtual void buttonText(docstring const & str,
+ int & descent) const override;
+ void buttonText(docstring const & str,
const int offset,
int & width,
int & ascent,
- int & descent) const;
+ int & descent) const override;
- int countExpanders(docstring const & str) const;
///
int width(QString const & str) const;
/// Return a pointer to a cached QTextLayout object
std::shared_ptr<QTextLayout const>
- getTextLayout(docstring const & s, bool const rtl,
- double const wordspacing) const;
+ getTextLayout(docstring const & s, bool const rtl, double const wordspacing) const;
private:
- std::pair<int, int> breakAt_helper(docstring const & s, int const x,
- bool const rtl, bool const force) const;
+ Breaks breakString_helper(docstring const & s, int first_wid, int wid,
+ bool rtl, bool force) const;
+
+ /// A different version of getTextLayout for internal use
+ std::shared_ptr<QTextLayout const>
+ getTextLayout(TextLayoutHelper const & tlh, double const wordspacing) const;
/// The font
QFont font_;
/// Metrics on the font
QFontMetrics metrics_;
+ /// Slope of italic font
+ double slope_;
+
/// Cache of char widths
mutable QHash<char_type, int> width_cache_;
/// Cache of string widths
mutable Cache<docstring, int> strwidth_cache_;
- /// Cache for breakAt
- mutable Cache<docstring, std::pair<int, int>> breakat_cache_;
+ /// Cache for breakString
+ mutable Cache<BreakStringKey, Breaks> breakstr_cache_;
/// Cache for QTextLayout
- mutable Cache<docstring, std::shared_ptr<QTextLayout>> qtextlayout_cache_;
+ mutable Cache<TextLayoutKey, std::shared_ptr<QTextLayout>> qtextlayout_cache_;
struct AscendDescend {
int ascent;