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Document the drawing of logos

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Also fix a couple of spacings.
This commit is contained in:
Jean-Marc 2015-03-15 18:21:01 +01:00
parent 73c3f3e2fd
commit 1f36fa6d56
1 changed files with 30 additions and 3 deletions
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33
src/insets/InsetSpecialChar.cpp
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@ -49,6 +49,7 @@ int logoWidth(FontInfo const & font, InsetSpecialChar::Kind kind) {
frontend::FontMetrics const & fm = theFontMetrics(font);
double const em = fm.width('M');
int width = 0;
// See drawlogo() below to understand what this does.
switch (kind) {
case InsetSpecialChar::PHRASE_LYX:
width = fm.width(from_ascii("L")) - 0.16667 * em
@ -64,6 +65,7 @@ int logoWidth(FontInfo const & font, InsetSpecialChar::Kind kind) {
case InsetSpecialChar::PHRASE_LATEX2E:
width = logoWidth(font, InsetSpecialChar::PHRASE_LATEX)
+ 0.15 * em
+ fm.width(from_ascii("2") + char_type(0x03b5));
break;
case InsetSpecialChar::PHRASE_LATEX: {
@ -140,6 +142,9 @@ void drawLogo(PainterInfo & pi, InsetSpecialChar::Kind kind, int & x, int & y) {
double const em = theFontMetrics(font).width('M');
switch (kind) {
case InsetSpecialChar::PHRASE_LYX:
/** Reference macro:
* \providecommand{\LyX}{L\kern-.1667em\lower.25em\hbox{Y}\kern-.125emX\\@};
*/
x += pi.pain.text(x, y, from_ascii("L"), font);
x -= 0.16667 * em;
x += pi.pain.text(x, y + 0.25 * em, from_ascii("Y"), font);
@ -147,21 +152,43 @@ void drawLogo(PainterInfo & pi, InsetSpecialChar::Kind kind, int & x, int & y) {
x += pi.pain.text(x, y, from_ascii("X"), font);
break;
case InsetSpecialChar::PHRASE_TEX:
case InsetSpecialChar::PHRASE_TEX: {
/** Reference macro:
* \def\TeX{T\kern-.1667em\lower.5ex\hbox{E}\kern-.125emX\@}
*/
double const ex = theFontMetrics(font).ascent('x');
x += pi.pain.text(x, y, from_ascii("T"), font);
x -= 0.16667 * em;
x += pi.pain.text(x, y + 0.25 * em, from_ascii("E"), font);
x += pi.pain.text(x, y + 0.5 * ex, from_ascii("E"), font);
x -= 0.125 * em;
x += pi.pain.text(x, y, from_ascii("X"), font);
break;
}
case InsetSpecialChar::PHRASE_LATEX2E:
/** Reference macro:
* \DeclareRobustCommand{\LaTeXe}{\mbox{\m@th
* \if b\expandafter\@car\f@series\@nil\boldmath\fi
* \LaTeX\kern.15em2$_{\textstyle\varepsilon}$}}
*/
drawLogo(pi, InsetSpecialChar::PHRASE_LATEX, x, y);
x += 0.15 * em;
x += pi.pain.text(x, y, from_ascii("2"), font);
x += pi.pain.text(x, y + 0.25 * em, char_type(0x03b5), font);
break;
case InsetSpecialChar::PHRASE_LATEX: {
/** Reference macro:
* \DeclareRobustCommand{\LaTeX}{L\kern-.36em%
* {\sbox\z@ T%
* \vbox to\ht\z@{\hbox{\check@mathfonts
* \fontsize\sf@size\z@
* \math@fontsfalse\selectfont
* A}%
* \vss}%
* }%
* \kern-.15em%
* \TeX}
*/
x += pi.pain.text(x, y, from_ascii("L"), font);
x -= 0.36 * em;
FontInfo smaller = font;