#include "Language.h"
#include "Dimension.h"
-#include "support/unicode.h"
+#include "insets/Inset.h"
-using std::string;
+#include "support/lassert.h"
+
+using namespace std;
namespace lyx {
namespace frontend {
-// Caution: When using ucs4_to_qchar() in these methods, this is no
-// real conversion but a simple cast in reality. This is the reason
-// why this works well for symbol fonts used in mathed too, even though
-// these are not real ucs4 characters. These are codepoints in the
-// modern fonts used, nothing unicode related.
-// See comment in QLPainter::text() for more explanation.
+namespace {
+/**
+ * Convert a UCS4 character into a QChar.
+ * This is a hack (it does only make sense for the common part of the UCS4
+ * and UTF16 encodings) and should not be used.
+ * This does only exist because of performance reasons (a real conversion
+ * using iconv is too slow on windows).
+ *
+ * This is no real conversion but a simple cast in reality. This is the reason
+ * why this works well for symbol fonts used in mathed too, even though
+ * these are not real ucs4 characters. These are codepoints in the
+ * modern fonts used, nothing unicode related.
+ * See comment in QLPainter::text() for more explanation.
+ **/
+inline QChar const ucs4_to_qchar(char_type const ucs4)
+{
+ LASSERT(is_utf16(ucs4), /**/);
+ return QChar(static_cast<unsigned short>(ucs4));
+}
+} // anon namespace
+
GuiFontMetrics::GuiFontMetrics(QFont const & font)
-: metrics_(font), smallcaps_metrics_(font), smallcaps_shape_(false)
+: metrics_(font, 0), smallcaps_metrics_(font), smallcaps_shape_(false)
{
}
GuiFontMetrics::GuiFontMetrics(QFont const & font, QFont const & smallcaps_font)
-: metrics_(font), smallcaps_metrics_(smallcaps_font), smallcaps_shape_(true)
+: metrics_(font, 0), smallcaps_metrics_(smallcaps_font), smallcaps_shape_(true)
{
}
if (!is_utf16(c))
// FIXME: QFontMetrics::leftBearingdoes not support the
// full unicode range. Once it does, we could use:
- //return metrics_.leftBearing(toqstr(docstring(1,c)));
+ //return metrics_.leftBearing(toqstr(docstring(1, c)));
return 0;
return metrics_.leftBearing(ucs4_to_qchar(c));
if (is_utf16(c)) {
QChar sc = ucs4_to_qchar(c);
value = width(c) - metrics_.rightBearing(sc);
- } else
- // FIXME: QFontMetrics::leftBearingdoes not support the
+ } else {
+ // FIXME: QFontMetrics::leftBearing does not support the
// full unicode range. Once it does, we could use:
- // metrics_.rightBearing(toqstr(docstring(1,c)));
+ // metrics_.rightBearing(toqstr(docstring(1, c)));
value = width(c);
+ }
rbearing_cache_.insert(c, value);
else
return metrics_.width(qc);
} else {
- QString const s = toqstr(docstring(1,c));
+ QString const s = toqstr(docstring(1, c));
QString const us = s.toUpper();
if (s != us)
return smallcaps_metrics_.width(us);
{
size_t ls = s.size();
int w = 0;
- for (unsigned int i = 0; i < ls; ++i)
+ for (unsigned int i = 0; i < ls; ++i) {
+ //FIXME: we need to detect surrogate pairs and act accordingly
+ /**
+ if isSurrogateBase(s[i]) {
+ docstring c = s[i];
+ if (smallcaps_shape_)
+ w += metrics_.width(toqstr(c + s[i + 1]));
+ else
+ w += smallcaps_metrics_.width(toqstr(c + s[i + 1]));
+ ++i;
+ }
+ else
+ */
w += width(s[i]);
+ }
return w;
}
void GuiFontMetrics::rectText(docstring const & str,
int & w, int & ascent, int & descent) const
{
- static int const d = 2;
- w = width(str) + d * 2 + 2;
+ static int const d = Inset::TEXT_TO_INSET_OFFSET / 2;
+
+ w = width(str) + Inset::TEXT_TO_INSET_OFFSET;
ascent = metrics_.ascent() + d;
descent = metrics_.descent() + d;
}
void GuiFontMetrics::buttonText(docstring const & str,
int & w, int & ascent, int & descent) const
{
- static int const d = 3;
- w = width(str) + d * 2 + 2;
- ascent = metrics_.ascent() + d;
- descent = metrics_.descent() + d;
+ rectText(str, w, ascent, descent);
+ w += Inset::TEXT_TO_INSET_OFFSET;
}
if (is_utf16(c))
r = metrics_.boundingRect(ucs4_to_qchar(c));
else
- r = metrics_.boundingRect(toqstr(docstring(1,c)));
+ r = metrics_.boundingRect(toqstr(docstring(1, c)));
AscendDescend ad = { -r.top(), r.bottom() + 1};
// We could as well compute the width but this is not really
if (is_utf16(c))
value = metrics_.width(ucs4_to_qchar(c));
else
- value = metrics_.width(toqstr(docstring(1,c)));
+ value = metrics_.width(toqstr(docstring(1, c)));
width_cache_.insert(c, value);
return value.descent;
}
-} // frontend
-} // lyx
+} // namespace frontend
+} // namespace lyx