On Thu, Jul 23, 2020 at 03:24:13PM +0200, Jean-Marc Lasgouttes wrote:
> Le 23/07/2020 à 15:13, Enrico Forestieri a écrit :
> > On Thu, Jul 23, 2020 at 01:16:32PM +0200, Jean-Marc Lasgouttes wrote:
> >
> > > Le 23/07/2020 à 12:22, Enrico Forestieri a écrit :
> > > > Here is an alternative patch. Please check whether the change in
> > > > InsetMathSymbol.cpp is compatible with the corresponding change
> > > > at e8ee0100.
> > >
> > > I think it is OK. What about the users of mathedSymbolDim in
> > > InsetMathFrac?
> > > Is kerning irrelevant here?
>
> This looks good for master and probably branch as far as I am concerned.
I am not really satisfied when navigating a formula with the cursor.
The caret will be placed in the middle of a symbol instead of after it.
Taking away the change to GuiFontMetrics.cpp makes navigation more
pleasant but both scripts are placed far away the symbol.
I propose the attached patch that leaves unchanged GuiFontMetrics::width()
and makes negative the kerning for a symbol, so that the subscript is
moved to the left instead of moving the superscript to the right.
--
Enrico
diff --git a/src/mathed/InsetMathChar.cpp b/src/mathed/InsetMathChar.cpp
index 36bdeaa2ba..d5ef8dc1f5 100644
--- a/src/mathed/InsetMathChar.cpp
+++ b/src/mathed/InsetMathChar.cpp
@@ -113,9 +113,7 @@ void InsetMathChar::metrics(MetricsInfo & mi, Dimension &
dim) const
if (isMathFont(f) && subst_) {
// If the char has a substitute, draw the replacement symbol
// instead, but only in math mode.
- mathedSymbolDim(mi.base, dim, subst_);
- kerning_ = mathed_char_kerning(mi.base.font,
*subst_->draw.rbegin());
- return;
+ kerning_ = mathedSymbolDim(mi.base, dim, subst_);
} else if (!slanted(char_) && f == "mathnormal") {
Changer dummy = mi.base.font.changeShape(UP_SHAPE);
dim = theFontMetrics(mi.base.font).dimension(char_);
diff --git a/src/mathed/InsetMathSymbol.cpp b/src/mathed/InsetMathSymbol.cpp
index 276fab9ddc..ef2a3e94ec 100644
--- a/src/mathed/InsetMathSymbol.cpp
+++ b/src/mathed/InsetMathSymbol.cpp
@@ -68,14 +68,11 @@ Limits InsetMathSymbol::defaultLimits() const
void InsetMathSymbol::metrics(MetricsInfo & mi, Dimension & dim) const
{
- mathedSymbolDim(mi.base, dim, sym_);
+ // set dim
+ // FIXME: this should depend on BufferView
+ // set kerning_
+ kerning_ = -mathedSymbolDim(mi.base, dim, sym_);
if (sym_->draw != sym_->name) {
- // set dim
- // FIXME: this should depend on BufferView
- // set kerning_
- kerning_ = mathed_char_kerning(mi.base.font,
- mathedSymbol(mi.base,
sym_).back());
-
// align character vertically
// FIXME: this should depend on BufferView
h_ = 0;
diff --git a/src/mathed/MathSupport.cpp b/src/mathed/MathSupport.cpp
index 12f8a842f6..45ca429681 100644
--- a/src/mathed/MathSupport.cpp
+++ b/src/mathed/MathSupport.cpp
@@ -680,9 +680,9 @@ docstring const & mathedSymbol(MetricsBase & mb, latexkeys
const * sym)
}
-void mathedSymbolDim(MetricsBase & mb, Dimension & dim, latexkeys const * sym)
+int mathedSymbolDim(MetricsBase & mb, Dimension & dim, latexkeys const * sym)
{
- LASSERT((bool)sym, return);
+ LASSERT((bool)sym, return 0);
//lyxerr << "metrics: symbol: '" << sym->name
// << "' in font: '" << sym->inset
// << "' drawn as: '" << sym->draw
@@ -694,6 +694,7 @@ void mathedSymbolDim(MetricsBase & mb, Dimension & dim,
latexkeys const * sym)
std::string const font = italic_upcase_greek ? "cmm" : sym->inset;
Changer dummy = mb.changeFontSet(font);
mathed_string_dim(mb.font, mathedSymbol(mb, sym), dim);
+ return mathed_char_kerning(mb.font, mathedSymbol(mb, sym).back());
}
diff --git a/src/mathed/MathSupport.h b/src/mathed/MathSupport.h
index fa7b2fe0ea..9fde420ce2 100644
--- a/src/mathed/MathSupport.h
+++ b/src/mathed/MathSupport.h
@@ -57,7 +57,7 @@ int mathed_string_width(FontInfo const &, docstring const &
s);
docstring const & mathedSymbol(MetricsBase & mb, latexkeys const * sym);
-void mathedSymbolDim(MetricsBase & mb, Dimension & dim, latexkeys const * sym);
+int mathedSymbolDim(MetricsBase & mb, Dimension & dim, latexkeys const * sym);
void mathedSymbolDraw(PainterInfo & pi, int x, int y, latexkeys const * sym);
--
lyx-devel mailing list
lyx-devel@lists.lyx.org
http://lists.lyx.org/mailman/listinfo/lyx-devel
