diff options
Diffstat (limited to 'src/gui/text/qfontmetrics.cpp')
| -rw-r--r-- | src/gui/text/qfontmetrics.cpp | 170 |
1 files changed, 148 insertions, 22 deletions
diff --git a/src/gui/text/qfontmetrics.cpp b/src/gui/text/qfontmetrics.cpp index 5675d6921d..5ad57b064b 100644 --- a/src/gui/text/qfontmetrics.cpp +++ b/src/gui/text/qfontmetrics.cpp @@ -510,6 +510,7 @@ int QFontMetrics::rightBearing(QChar ch) const return qRound(rb); } +#if QT_DEPRECATED_SINCE(5, 11) /*! Returns the width in pixels of the first \a len characters of \a text. If \a len is negative (the default), the entire string is @@ -520,11 +521,13 @@ int QFontMetrics::rightBearing(QChar ch) const string will cover whereas width() returns the distance to where the next string should be drawn. + \deprecated in Qt 5.11. Use horizontalAdvance() instead. + \sa boundingRect() */ int QFontMetrics::width(const QString &text, int len) const { - return width(text, len, 0); + return horizontalAdvance(text, len); } /*! @@ -532,17 +535,17 @@ int QFontMetrics::width(const QString &text, int len) const */ int QFontMetrics::width(const QString &text, int len, int flags) const { - int pos = text.indexOf(QLatin1Char('\x9c')); - if (pos != -1) { - len = (len < 0) ? pos : qMin(pos, len); - } else if (len < 0) { - len = text.length(); - } - if (len == 0) - return 0; - -#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) +#if QT_DEPRECATED_SINCE(5, 11) && QT_VERSION < QT_VERSION_CHECK(6, 0, 0) if (flags & Qt::TextBypassShaping) { + int pos = text.indexOf(QLatin1Char('\x9c')); + if (pos != -1) { + len = (len < 0) ? pos : qMin(pos, len); + } else if (len < 0) { + len = text.length(); + } + if (len == 0) + return 0; + // Skip complex shaping, only use advances int numGlyphs = len; QVarLengthGlyphLayoutArray glyphs(numGlyphs); @@ -555,10 +558,11 @@ int QFontMetrics::width(const QString &text, int len, int flags) const width += glyphs.advances[i]; return qRound(width); } +#else + Q_UNUSED(flags) #endif - QStackTextEngine layout(text, QFont(d.data())); - return qRound(layout.width(0, len)); + return horizontalAdvance(text, len); } /*! @@ -577,6 +581,8 @@ int QFontMetrics::width(const QString &text, int len, int flags) const in this particular font are both negative, while the bearings of "o" are both positive. + \deprecated in Qt 5.11. Use horizontalAdvance() instead. + \warning This function will produce incorrect results for Arabic characters or non-spacing marks in the middle of a string, as the glyph shaping and positioning of marks that happens when @@ -587,6 +593,65 @@ int QFontMetrics::width(const QString &text, int len, int flags) const */ int QFontMetrics::width(QChar ch) const { + return horizontalAdvance(ch); +} +#endif // QT_DEPRECATED_SINCE(5, 11) + +/*! + Returns the horizontal advance in pixels of the first \a len characters of \a + text. If \a len is negative (the default), the entire string is + used. + + This is the distance appropriate for drawing a subsequent character + after \a text. + + \since 5.11 + + \sa boundingRect() +*/ +int QFontMetrics::horizontalAdvance(const QString &text, int len) const +{ + int pos = text.indexOf(QLatin1Char('\x9c')); + if (pos != -1) { + len = (len < 0) ? pos : qMin(pos, len); + } else if (len < 0) { + len = text.length(); + } + if (len == 0) + return 0; + + QStackTextEngine layout(text, QFont(d.data())); + return qRound(layout.width(0, len)); +} + +/*! + \overload + + \image bearings.png Bearings + + Returns the horizontal advance of character \a ch in pixels. This is a + distance appropriate for drawing a subsequent character after \a + ch. + + Some of the metrics are described in the image. The + central dark rectangles cover the logical horizontalAdvance() of each + character. The outer pale rectangles cover the leftBearing() and + rightBearing() of each character. Notice that the bearings of "f" + in this particular font are both negative, while the bearings of + "o" are both positive. + + \warning This function will produce incorrect results for Arabic + characters or non-spacing marks in the middle of a string, as the + glyph shaping and positioning of marks that happens when + processing strings cannot be taken into account. When implementing + an interactive text control, use QTextLayout instead. + + \since 5.11 + + \sa boundingRect() +*/ +int QFontMetrics::horizontalAdvance(QChar ch) const +{ if (QChar::category(ch.unicode()) == QChar::Mark_NonSpacing) return 0; @@ -677,7 +742,7 @@ int QFontMetrics::charWidth(const QString &text, int pos) const rectangle might be different than what the width() method returns. If you want to know the advance width of the string (to lay out - a set of strings next to each other), use width() instead. + a set of strings next to each other), use horizontalAdvance() instead. Newline characters are processed as normal characters, \e not as linebreaks. @@ -711,7 +776,7 @@ QRect QFontMetrics::boundingRect(const QString &text) const base line. \warning The width of the returned rectangle is not the advance width - of the character. Use boundingRect(const QString &) or width() instead. + of the character. Use boundingRect(const QString &) or horizontalAdvance() instead. \sa width() */ @@ -846,7 +911,7 @@ QSize QFontMetrics::size(int flags, const QString &text, int tabStops, int *tabA rectangle might be different than what the width() method returns. If you want to know the advance width of the string (to lay out - a set of strings next to each other), use width() instead. + a set of strings next to each other), use horizontalAdvance() instead. Newline characters are processed as normal characters, \e not as linebreaks. @@ -1396,6 +1461,7 @@ qreal QFontMetricsF::rightBearing(QChar ch) const } +#if QT_DEPRECATED_SINCE(5, 11) /*! Returns the width in pixels of the characters in the given \a text. @@ -1404,16 +1470,73 @@ qreal QFontMetricsF::rightBearing(QChar ch) const describing the pixels this string will cover whereas width() returns the distance to where the next string should be drawn. + \deprecated in Qt 5.11. Use horizontalAdvance() instead. + \sa boundingRect() */ qreal QFontMetricsF::width(const QString &text) const { + return horizontalAdvance(text); +} + +/*! + \overload + + \image bearings.png Bearings + + Returns the logical width of character \a ch in pixels. This is a + distance appropriate for drawing a subsequent character after \a + ch. + + Some of the metrics are described in the image to the right. The + central dark rectangles cover the logical width() of each + character. The outer pale rectangles cover the leftBearing() and + rightBearing() of each character. Notice that the bearings of "f" + in this particular font are both negative, while the bearings of + "o" are both positive. + + \deprecated in Qt 5.11. Use horizontalAdvance() instead. + + \warning This function will produce incorrect results for Arabic + characters or non-spacing marks in the middle of a string, as the + glyph shaping and positioning of marks that happens when + processing strings cannot be taken into account. When implementing + an interactive text control, use QTextLayout instead. + + \sa boundingRect() +*/ +qreal QFontMetricsF::width(QChar ch) const +{ + return horizontalAdvance(ch); +} +#endif + +/*! + Returns the horizontal advance in pixels of the first \a length characters of \a + text. If \a length is negative (the default), the entire string is + used. + + The advance is the distance appropriate for drawing a subsequent + character after \a text. + + \since 5.11 + + \sa boundingRect() +*/ +qreal QFontMetricsF::horizontalAdvance(const QString &text, int length) const +{ int pos = text.indexOf(QLatin1Char('\x9c')); - int len = (pos != -1) ? pos : text.length(); + if (pos != -1) + length = (length < 0) ? pos : qMin(pos, length); + else if (length < 0) + length = text.length(); + + if (length == 0) + return 0; QStackTextEngine layout(text, QFont(d.data())); layout.itemize(); - return layout.width(0, len).toReal(); + return layout.width(0, length).toReal(); } /*! @@ -1421,7 +1544,7 @@ qreal QFontMetricsF::width(const QString &text) const \image bearings.png Bearings - Returns the logical width of character \a ch in pixels. This is a + Returns the horizontal advance of character \a ch in pixels. This is a distance appropriate for drawing a subsequent character after \a ch. @@ -1438,9 +1561,11 @@ qreal QFontMetricsF::width(const QString &text) const processing strings cannot be taken into account. When implementing an interactive text control, use QTextLayout instead. + \since 5.11 + \sa boundingRect() */ -qreal QFontMetricsF::width(QChar ch) const +qreal QFontMetricsF::horizontalAdvance(QChar ch) const { if (ch.category() == QChar::Mark_NonSpacing) return 0.; @@ -1467,6 +1592,7 @@ qreal QFontMetricsF::width(QChar ch) const return advance.toReal(); } + /*! Returns the bounding rectangle of the characters in the string specified by \a text. The bounding rectangle always covers at least @@ -1477,7 +1603,7 @@ qreal QFontMetricsF::width(QChar ch) const rectangle might be different than what the width() method returns. If you want to know the advance width of the string (to lay out - a set of strings next to each other), use width() instead. + a set of strings next to each other), use horizontalAdvance() instead. Newline characters are processed as normal characters, \e not as linebreaks. @@ -1650,7 +1776,7 @@ QSizeF QFontMetricsF::size(int flags, const QString &text, int tabStops, int *ta rectangle might be different than what the width() method returns. If you want to know the advance width of the string (to lay out - a set of strings next to each other), use width() instead. + a set of strings next to each other), use horizontalAdvance() instead. Newline characters are processed as normal characters, \e not as linebreaks. |