mirror of
https://git.lyx.org/repos/lyx.git
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389 lines
7.9 KiB
C++
389 lines
7.9 KiB
C++
/**
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* \file InsetMathPhantom.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Georg Baum
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "InsetMathPhantom.h"
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#include "LaTeXFeatures.h"
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#include "MathStream.h"
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#include "MetricsInfo.h"
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#include "frontends/Painter.h"
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#include <algorithm>
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#include <ostream>
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namespace lyx {
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InsetMathPhantom::InsetMathPhantom(Buffer * buf, Kind k)
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: InsetMathNest(buf, 1), kind_(k)
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{}
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Inset * InsetMathPhantom::clone() const
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{
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return new InsetMathPhantom(*this);
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}
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void InsetMathPhantom::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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cell(0).metrics(mi, dim);
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metricsMarkers(dim);
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}
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void InsetMathPhantom::draw(PainterInfo & pi, int x, int y) const
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{
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static int const arrow_size = 4;
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// We first draw the text and then an arrow
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ColorCode const origcol = pi.base.font.color();
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if (visibleContents())
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pi.base.font.setColor(Color_special);
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cell(0).draw(pi, x + 1, y);
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if (visibleContents())
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pi.base.font.setColor(origcol);
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Dimension const dim = dimension(*pi.base.bv);
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if (kind_ == phantom || kind_ == vphantom) {
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// y1---------
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// / \.
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// y2----- / | \.
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// |
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// |
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// y3----- \ | /
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// \ /
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// y4---------
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// | | |
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// / | \.
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// x1 x2 x3
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int const x2 = x + dim.wid / 2;
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int const x1 = x2 - arrow_size;
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int const x3 = x2 + arrow_size;
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int const y1 = y - dim.asc;
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int const y2 = y1 + arrow_size;
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int const y4 = y + dim.des;
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int const y3 = y4 - arrow_size;
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// top arrow
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pi.pain.line(x2, y1, x1, y2, Color_added_space);
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pi.pain.line(x2, y1, x3, y2, Color_added_space);
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// bottom arrow
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pi.pain.line(x2, y4, x1, y3, Color_added_space);
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pi.pain.line(x2, y4, x3, y3, Color_added_space);
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// joining line
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pi.pain.line(x2, y1, x2, y4, Color_added_space);
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}
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if (kind_ == phantom || kind_ == hphantom) {
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// y1---- / \.
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// / \.
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// y2--- <---------------->
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// \ /
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// y3---- \ /
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// | | | |
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// x1 x2 x3 x4
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int const x1 = x;
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int const x2 = x + arrow_size;
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int const x4 = x + dim.wid;
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int const x3 = x4 - arrow_size;
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int const y2 = y + (dim.des - dim.asc) / 2;
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int const y1 = y2 - arrow_size;
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int const y3 = y2 + arrow_size;
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// left arrow
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pi.pain.line(x1, y2, x2, y3, Color_added_space);
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pi.pain.line(x1, y2, x2, y1, Color_added_space);
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// right arrow
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pi.pain.line(x4, y2, x3, y3, Color_added_space);
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pi.pain.line(x4, y2, x3, y1, Color_added_space);
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// joining line
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pi.pain.line(x1, y2, x4, y2, Color_added_space);
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}
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else if (kind_ == mathclap) {
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// y1---- \ /
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// \ /
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// y2--- -------->-<--------
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// / \.
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// y3---- / \.
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// | | | | |
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// x1 x2 x3 x4 x5
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int const x1 = x;
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int const x5 = x + dim.wid;
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int const x3 = x + dim.wid / 2;
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int const x2 = std::max(x1, x3 - arrow_size);
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int const x4 = std::min(x5, x3 + arrow_size);
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int const y2 = y + (dim.des - dim.asc) / 2;
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int const y1 = y2 - arrow_size;
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int const y3 = y2 + arrow_size;
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// left arrow
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pi.pain.line(x2, y3, x3, y2, Color_added_space);
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pi.pain.line(x2, y1, x3, y2, Color_added_space);
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// right arrow
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pi.pain.line(x4, y3, x3, y2, Color_added_space);
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pi.pain.line(x4, y1, x3, y2, Color_added_space);
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// joining line
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pi.pain.line(x1, y2, x5, y2, Color_added_space);
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}
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else if (kind_ == mathllap) {
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// y1---- \.
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// \.
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// y2--- ------------------>
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// /
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// y3---- /
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// | | |
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// x1 x2 x3
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int const x1 = x;
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int const x3 = x + dim.wid;
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int const x2 = std::max(x1, x3 - arrow_size);
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int const y2 = y + (dim.des - dim.asc) / 2;
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int const y1 = y2 - arrow_size;
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int const y3 = y2 + arrow_size;
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// right arrow
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pi.pain.line(x3, y2, x2, y3, Color_added_space);
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pi.pain.line(x3, y2, x2, y1, Color_added_space);
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// joining line
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pi.pain.line(x1, y2, x3, y2, Color_added_space);
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}
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else if (kind_ == mathrlap) {
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// y1---- /
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// /
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// y2--- <------------------
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// \.
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// y3---- \.
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// | | |
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// x1 x2 x3
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int const x1 = x;
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int const x3 = x + dim.wid;
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int const x2 = std::min(x3, x + arrow_size);
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int const y2 = y + (dim.des - dim.asc) / 2;
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int const y1 = y2 - arrow_size;
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int const y3 = y2 + arrow_size;
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// left arrow
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pi.pain.line(x1, y2, x2, y3, Color_added_space);
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pi.pain.line(x1, y2, x2, y1, Color_added_space);
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// joining line
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pi.pain.line(x1, y2, x3, y2, Color_added_space);
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}
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else if (kind_ == smash || kind_ == smasht || kind_ == smashb) {
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// y1---------
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// |
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// y2----- \ | /
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// \ /
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// y3-------- |
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// / \.
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// y4----- / | \.
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// |
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// y5---------
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// | | |
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// / | \.
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// x1 x2 x3
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int const x2 = x + dim.wid / 2;
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int const x1 = x2 - arrow_size;
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int const x3 = x2 + arrow_size;
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int const y1 = y - dim.asc;
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int const y5 = y + dim.des;
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int const y3 = y;
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int const y2 = std::max(y1, y3 - arrow_size);
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int const y4 = std::min(y5, y3 + arrow_size);
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// top arrow
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if (kind_ != smashb) {
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pi.pain.line(x1, y2, x2, y3, Color_added_space);
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pi.pain.line(x3, y2, x2, y3, Color_added_space);
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}
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// bottom arrow
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if (kind_ != smasht) {
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pi.pain.line(x1, y4, x2, y3, Color_added_space);
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pi.pain.line(x3, y4, x2, y3, Color_added_space);
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}
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// joining line
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if (kind_ == smasht)
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pi.pain.line(x2, y1, x2, y3, Color_added_space);
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else if (kind_ == smashb)
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pi.pain.line(x2, y3, x2, y5, Color_added_space);
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else
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pi.pain.line(x2, y1, x2, y5, Color_added_space);
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}
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drawMarkers(pi, x, y);
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}
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void InsetMathPhantom::write(WriteStream & os) const
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{
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MathEnsurer ensurer(os);
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if (os.fragile())
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os << "\\protect";
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switch (kind_) {
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case phantom:
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os << "\\phantom{";
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break;
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case vphantom:
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os << "\\vphantom{";
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break;
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case hphantom:
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os << "\\hphantom{";
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break;
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case smash:
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os << "\\smash{";
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break;
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case smasht:
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os << "\\smash[t]{";
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break;
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case smashb:
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os << "\\smash[b]{";
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break;
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case mathclap:
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os << "\\mathclap{";
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break;
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case mathllap:
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os << "\\mathllap{";
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break;
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case mathrlap:
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os << "\\mathrlap{";
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break;
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}
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os << cell(0) << '}';
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}
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void InsetMathPhantom::normalize(NormalStream & os) const
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{
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switch (kind_) {
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case phantom:
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os << "[phantom ";
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break;
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case vphantom:
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os << "[vphantom ";
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break;
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case hphantom:
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os << "[hphantom ";
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break;
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case smash:
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os << "[smash ";
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break;
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case smasht:
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os << "[smasht ";
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break;
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case smashb:
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os << "[smashb ";
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break;
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case mathclap:
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os << "[mathclap ";
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break;
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case mathllap:
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os << "[mathllap ";
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break;
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case mathrlap:
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os << "[mathrlap ";
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break;
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}
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os << cell(0) << ']';
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}
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void InsetMathPhantom::infoize(odocstream & os) const
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{
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switch (kind_) {
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case phantom:
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os << "Phantom";
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break;
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case vphantom:
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os << "Vphantom";
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break;
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case hphantom:
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os << "Hphantom";
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break;
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case smash:
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os << "Smash";
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break;
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case smasht:
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os << "Smashtop";
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break;
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case smashb:
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os << "Smashbottom";
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break;
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case mathllap:
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os << "Mathllap";
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break;
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case mathclap:
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os << "Mathclap";
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break;
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case mathrlap:
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os << "Mathrlap";
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break;
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}
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}
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void InsetMathPhantom::validate(LaTeXFeatures & features) const
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{
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InsetMathNest::validate(features);
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switch (kind_) {
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case phantom:
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case vphantom:
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case hphantom:
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case smash:
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break;
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case smasht:
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case smashb:
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features.require("amsmath");
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break;
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case mathclap:
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case mathllap:
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case mathrlap:
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features.require("mathtools");
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break;
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}
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}
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bool InsetMathPhantom::visibleContents() const
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{
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return kind_ == phantom || kind_ == vphantom || kind_ == hphantom;
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}
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} // namespace lyx
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