lyx_mirror/src/rowpainter.C
Lars Gullik Bjønnes 6a55be9506 tostr -> convert and some bformat work
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@9446 a592a061-630c-0410-9148-cb99ea01b6c8
2005-01-06 15:40:49 +00:00

824 lines
20 KiB
C
Raw Blame History

/**
* \file rowpainter.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author various
* \author John Levon
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "rowpainter.h"
#include "buffer.h"
#include "coordcache.h"
#include "cursor.h"
#include "debug.h"
#include "bufferparams.h"
#include "BufferView.h"
#include "encoding.h"
#include "gettext.h"
#include "language.h"
#include "LColor.h"
#include "lyxrc.h"
#include "lyxrow.h"
#include "lyxrow_funcs.h"
#include "metricsinfo.h"
#include "paragraph.h"
#include "paragraph_funcs.h"
#include "ParagraphParameters.h"
#include "vspace.h"
#include "frontends/font_metrics.h"
#include "frontends/nullpainter.h"
#include "frontends/Painter.h"
#include "insets/insettext.h"
#include "support/textutils.h"
using lyx::pos_type;
using lyx::pit_type;
using std::endl;
using std::max;
using std::min;
using std::string;
namespace {
/**
* A class used for painting an individual row of text.
*/
class RowPainter {
public:
/// initialise and run painter
RowPainter(PainterInfo & pi, LyXText const & text,
pit_type pit, Row & row, int x, int y);
// paint various parts
void paintAppendix();
void paintDepthBar();
void paintChangeBar();
void paintFirst();
void paintLast();
void paintText();
private:
void paintForeignMark(double orig_x, LyXFont const & orig_font);
void paintHebrewComposeChar(lyx::pos_type & vpos);
void paintArabicComposeChar(lyx::pos_type & vpos);
void paintChars(lyx::pos_type & vpos, bool hebrew, bool arabic);
int paintAppendixStart(int y);
void paintFromPos(lyx::pos_type & vpos);
void paintInset(lyx::pos_type const pos);
/// return left margin
int leftMargin() const;
/// return the font at the given pos
LyXFont const getFont(lyx::pos_type pos) const;
/// return the label font for this row
LyXFont const getLabelFont() const;
/// return pixel width for the given pos
int singleWidth(lyx::pos_type pos) const;
int singleWidth(lyx::pos_type pos, char c) const;
/// bufferview to paint on
BufferView const & bv_;
/// Painter to use
Painter & pain_;
/// LyXText for the row
LyXText const & text_;
ParagraphList & pars_;
/// The row to paint
Row & row_;
/// Row's paragraph
pit_type const pit_;
Paragraph const & par_;
// Looks ugly - is
double const xo_;
int const yo_; // current baseline
double x_;
int width_;
double separator_;
double hfill_;
double label_hfill_;
};
RowPainter::RowPainter(PainterInfo & pi,
LyXText const & text, pit_type pit, Row & row, int x, int y)
: bv_(*pi.base.bv), pain_(pi.pain), text_(text), pars_(text.paragraphs()),
row_(row), pit_(pit), par_(text.paragraphs()[pit]),
xo_(x), yo_(y), width_(text_.width())
{
RowMetrics m = text_.computeRowMetrics(pit, row_);
x_ = m.x + xo_;
//lyxerr << "RowPainter: x: " << x_ << " xo: " << xo_ << " yo: " << yo_ << endl;
//row_.dump();
separator_ = m.separator;
hfill_ = m.hfill;
label_hfill_ = m.label_hfill;
BOOST_ASSERT(pit >= 0);
BOOST_ASSERT(pit < int(text.paragraphs().size()));
}
/// "temporary"
LyXFont const RowPainter::getFont(pos_type pos) const
{
return text_.getFont(par_, pos);
}
int RowPainter::singleWidth(lyx::pos_type pos) const
{
return text_.singleWidth(par_, pos);
}
int RowPainter::singleWidth(lyx::pos_type pos, char c) const
{
LyXFont const & font = text_.getFont(par_, pos);
return text_.singleWidth(par_, pos, c, font);
}
LyXFont const RowPainter::getLabelFont() const
{
return text_.getLabelFont(par_);
}
int RowPainter::leftMargin() const
{
return text_.leftMargin(pit_, row_.pos());
}
void RowPainter::paintInset(pos_type const pos)
{
InsetBase const * inset = par_.getInset(pos);
BOOST_ASSERT(inset);
PainterInfo pi(const_cast<BufferView *>(&bv_), pain_);
pi.base.font = getFont(pos);
pi.ltr_pos = (text_.bidi.level(pos) % 2 == 0);
theCoords.insets_.add(inset, int(x_), yo_);
inset->drawSelection(pi, int(x_), yo_);
inset->draw(pi, int(x_), yo_);
x_ += inset->width();
}
void RowPainter::paintHebrewComposeChar(pos_type & vpos)
{
pos_type pos = text_.bidi.vis2log(vpos);
string str;
// first char
char c = par_.getChar(pos);
str += c;
++vpos;
LyXFont const & font = getFont(pos);
int const width = font_metrics::width(c, font);
int dx = 0;
for (pos_type i = pos - 1; i >= 0; --i) {
c = par_.getChar(i);
if (!Encodings::IsComposeChar_hebrew(c)) {
if (IsPrintableNonspace(c)) {
int const width2 = singleWidth(i, c);
// dalet / resh
dx = (c == '<EFBFBD>' || c == '<EFBFBD>')
? width2 - width
: (width2 - width) / 2;
}
break;
}
}
// Draw nikud
pain_.text(int(x_) + dx, yo_, str, font);
}
void RowPainter::paintArabicComposeChar(pos_type & vpos)
{
pos_type pos = text_.bidi.vis2log(vpos);
string str;
// first char
char c = par_.getChar(pos);
c = par_.transformChar(c, pos);
str += c;
++vpos;
LyXFont const & font = getFont(pos);
int const width = font_metrics::width(c, font);
int dx = 0;
for (pos_type i = pos - 1; i >= 0; --i) {
c = par_.getChar(i);
if (!Encodings::IsComposeChar_arabic(c)) {
if (IsPrintableNonspace(c)) {
int const width2 = singleWidth(i, c);
dx = (width2 - width) / 2;
}
break;
}
}
// Draw nikud
pain_.text(int(x_) + dx, yo_, str, font);
}
void RowPainter::paintChars(pos_type & vpos, bool hebrew, bool arabic)
{
pos_type pos = text_.bidi.vis2log(vpos);
pos_type const end = row_.endpos();
LyXFont orig_font = getFont(pos);
// first character
string str;
str += par_.getChar(pos);
if (arabic) {
unsigned char c = str[0];
str[0] = par_.transformChar(c, pos);
}
bool prev_struckout = isDeletedText(par_, pos);
bool prev_newtext = isInsertedText(par_, pos);
// collect as much similar chars as we can
for (++vpos; vpos < end && (pos = text_.bidi.vis2log(vpos)) >= 0; ++vpos) {
char c = par_.getChar(pos);
if (!IsPrintableNonspace(c))
break;
if (prev_struckout != isDeletedText(par_, pos))
break;
if (prev_newtext != isInsertedText(par_, pos))
break;
if (arabic && Encodings::IsComposeChar_arabic(c))
break;
if (hebrew && Encodings::IsComposeChar_hebrew(c))
break;
if (orig_font != getFont(pos))
break;
if (arabic)
c = par_.transformChar(c, pos);
str += c;
}
if (prev_struckout)
orig_font.setColor(LColor::strikeout);
else if (prev_newtext)
orig_font.setColor(LColor::newtext);
// Draw text and set the new x position
//lyxerr << "paint row: yo_ " << yo_ << "\n";
pain_.text(int(x_), yo_, str, orig_font);
x_ += font_metrics::width(str, orig_font);
}
void RowPainter::paintForeignMark(double orig_x, LyXFont const & orig_font)
{
if (!lyxrc.mark_foreign_language)
return;
if (orig_font.language() == latex_language)
return;
if (orig_font.language() == bv_.buffer()->params().language)
return;
int const y = yo_ + 1;
pain_.line(int(orig_x), y, int(x_), y, LColor::language);
}
void RowPainter::paintFromPos(pos_type & vpos)
{
pos_type const pos = text_.bidi.vis2log(vpos);
LyXFont const & orig_font = getFont(pos);
double const orig_x = x_;
char const c = par_.getChar(pos);
if (c == Paragraph::META_INSET) {
paintInset(pos);
++vpos;
paintForeignMark(orig_x, orig_font);
return;
}
// usual characters, no insets
// special case languages
bool const hebrew = (orig_font.language()->lang() == "hebrew");
bool const arabic =
orig_font.language()->lang() == "arabic" &&
(lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
lyxrc.font_norm_type == LyXRC::ISO_10646_1);
// draw as many chars as we can
if ((!hebrew && !arabic)
|| (hebrew && !Encodings::IsComposeChar_hebrew(c))
|| (arabic && !Encodings::IsComposeChar_arabic(c))) {
paintChars(vpos, hebrew, arabic);
} else if (hebrew) {
paintHebrewComposeChar(vpos);
} else if (arabic) {
paintArabicComposeChar(vpos);
}
paintForeignMark(orig_x, orig_font);
}
void RowPainter::paintChangeBar()
{
pos_type const start = row_.pos();
pos_type const end = row_.endpos();
if (start == end || !par_.isChanged(start, end - 1))
return;
int const height = text_.isLastRow(pit_, row_)
? row_.ascent()
: row_.height();
pain_.fillRectangle(4, yo_ - row_.ascent(), 5, height, LColor::changebar);
}
void RowPainter::paintAppendix()
{
if (!par_.params().appendix())
return;
int y = yo_ - row_.ascent();
if (par_.params().startOfAppendix())
y += 2 * defaultRowHeight();
pain_.line(1, y, 1, yo_ + row_.height(), LColor::appendix);
pain_.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), LColor::appendix);
}
void RowPainter::paintDepthBar()
{
Paragraph::depth_type const depth = par_.getDepth();
if (depth <= 0)
return;
Paragraph::depth_type prev_depth = 0;
if (!text_.isFirstRow(pit_, row_)) {
pit_type pit2 = pit_;
if (row_.pos() == 0)
--pit2;
prev_depth = pars_[pit2].getDepth();
}
Paragraph::depth_type next_depth = 0;
if (!text_.isLastRow(pit_, row_)) {
pit_type pit2 = pit_;
if (row_.endpos() >= pars_[pit2].size())
++pit2;
next_depth = pars_[pit2].getDepth();
}
for (Paragraph::depth_type i = 1; i <= depth; ++i) {
int const w = nestMargin() / 5;
int x = int(xo_) + w * i;
// only consider the changebar space if we're drawing outermost text
if (text_.isMainText())
x += changebarMargin();
int const starty = yo_ - row_.ascent();
int const h = row_.height() - 1 - (i - next_depth - 1) * 3;
pain_.line(x, starty, x, starty + h, LColor::depthbar);
if (i > prev_depth)
pain_.fillRectangle(x, starty, w, 2, LColor::depthbar);
if (i > next_depth)
pain_.fillRectangle(x, starty + h, w, 2, LColor::depthbar);
}
}
int RowPainter::paintAppendixStart(int y)
{
LyXFont pb_font;
pb_font.setColor(LColor::appendix);
pb_font.decSize();
string const label = _("Appendix");
int w = 0;
int a = 0;
int d = 0;
font_metrics::rectText(label, pb_font, w, a, d);
int const text_start = int(xo_ + (width_ - w) / 2);
int const text_end = text_start + w;
pain_.rectText(text_start, y + d, label, pb_font, LColor::none, LColor::none);
pain_.line(int(xo_ + 1), y, text_start, y, LColor::appendix);
pain_.line(text_end, y, int(xo_ + width_ - 2), y, LColor::appendix);
return 3 * defaultRowHeight();
}
void RowPainter::paintFirst()
{
ParagraphParameters const & parparams = par_.params();
int y_top = 0;
// start of appendix?
if (parparams.startOfAppendix())
y_top += paintAppendixStart(yo_ + y_top + 2 * defaultRowHeight());
Buffer const & buffer = *bv_.buffer();
LyXLayout_ptr const & layout = par_.layout();
if (buffer.params().paragraph_separation == BufferParams::PARSEP_SKIP) {
if (pit_ != 0) {
if (layout->latextype == LATEX_PARAGRAPH
&& !par_.getDepth()) {
y_top += buffer.params().getDefSkip().inPixels(bv_);
} else {
LyXLayout_ptr const & playout = pars_[pit_ - 1].layout();
if (playout->latextype == LATEX_PARAGRAPH
&& !pars_[pit_ - 1].getDepth()) {
// is it right to use defskip here, too? (AS)
y_top += buffer.params().getDefSkip().inPixels(bv_);
}
}
}
}
bool const is_rtl = text_.isRTL(par_);
bool const is_seq = isFirstInSequence(pit_, text_.paragraphs());
//lyxerr << "paintFirst: " << par_.id() << " is_seq: " << is_seq << std::endl;
// should we print a label?
if (layout->labeltype >= LABEL_STATIC
&& (layout->labeltype != LABEL_STATIC
|| layout->latextype != LATEX_ENVIRONMENT
|| is_seq)) {
LyXFont font = getLabelFont();
if (!par_.getLabelstring().empty()) {
double x = x_;
string const str = par_.getLabelstring();
// this is special code for the chapter layout. This is
// printed in an extra row and has a pagebreak at
// the top.
if (layout->counter == "chapter") {
if (buffer.params().secnumdepth >= 0) {
double spacing_val = 1.0;
if (!parparams.spacing().isDefault()) {
spacing_val = parparams.spacing().getValue();
} else {
spacing_val = buffer.params().spacing().getValue();
}
#warning Look is this correct?
int const labeladdon = int(font_metrics::maxHeight(font) * layout->spacing.getValue() * spacing_val);
int const maxdesc = int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
+ int(layout->parsep) * defaultRowHeight();
if (is_rtl) {
x = width_ - leftMargin() -
font_metrics::width(str, font);
}
pain_.text(int(x), yo_ - maxdesc - labeladdon, str, font);
}
} else {
if (is_rtl) {
x = width_ - leftMargin()
+ font_metrics::width(layout->labelsep, font);
} else {
x = x_ - font_metrics::width(layout->labelsep, font)
- font_metrics::width(str, font);
}
pain_.text(int(x), yo_, str, font);
}
}
// the labels at the top of an environment.
// More or less for bibliography
} else if (is_seq &&
(layout->labeltype == LABEL_TOP_ENVIRONMENT ||
layout->labeltype == LABEL_BIBLIO ||
layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
LyXFont font = getLabelFont();
if (!par_.getLabelstring().empty()) {
string const str = par_.getLabelstring();
double spacing_val = 1.0;
if (!parparams.spacing().isDefault()) {
spacing_val = parparams.spacing().getValue();
} else {
spacing_val = buffer.params().spacing().getValue();
}
int maxdesc =
int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
+ (layout->labelbottomsep * defaultRowHeight()));
double x = x_;
if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
x = ((is_rtl ? leftMargin() : x_)
+ width_ - text_.rightMargin(par_)) / 2;
x -= font_metrics::width(str, font) / 2;
} else if (is_rtl) {
x = width_ - leftMargin() -
font_metrics::width(str, font);
}
pain_.text(int(x), yo_ - maxdesc, str, font);
}
}
}
void RowPainter::paintLast()
{
bool const is_rtl = text_.isRTL(par_);
int const endlabel = getEndLabel(pit_, text_.paragraphs());
// draw an endlabel
switch (endlabel) {
case END_LABEL_BOX:
case END_LABEL_FILLED_BOX: {
LyXFont const font = getLabelFont();
int const size = int(0.75 * font_metrics::maxAscent(font));
int const y = yo_ - size;
int x = is_rtl ? nestMargin() + changebarMargin() : width_ - size;
if (width_ - int(row_.width()) <= size)
x += (size - width_ + row_.width() + 1) * (is_rtl ? -1 : 1);
if (endlabel == END_LABEL_BOX)
pain_.rectangle(x, y, size, size, LColor::eolmarker);
else
pain_.fillRectangle(x, y, size, size, LColor::eolmarker);
break;
}
case END_LABEL_STATIC: {
LyXFont font = getLabelFont();
string const & str = par_.layout()->endlabelstring();
double const x = is_rtl ?
x_ - font_metrics::width(str, font)
: - text_.rightMargin(par_) - row_.width();
pain_.text(int(x), yo_, str, font);
break;
}
case END_LABEL_NO_LABEL:
break;
}
}
void RowPainter::paintText()
{
pos_type const end = row_.endpos();
pos_type body_pos = par_.beginOfBody();
if (body_pos > 0 &&
(body_pos > end || !par_.isLineSeparator(body_pos - 1))) {
body_pos = 0;
}
LyXLayout_ptr const & layout = par_.layout();
bool running_strikeout = false;
bool is_struckout = false;
int last_strikeout_x = 0;
for (pos_type vpos = row_.pos(); vpos < end; ) {
if (x_ > bv_.workWidth())
break;
pos_type const pos = text_.bidi.vis2log(vpos);
if (pos >= par_.size()) {
++vpos;
continue;
}
const int width_pos = singleWidth(pos);
if (x_ + width_pos < 0) {
x_ += width_pos;
++vpos;
continue;
}
is_struckout = isDeletedText(par_, pos);
if (is_struckout && !running_strikeout) {
running_strikeout = true;
last_strikeout_x = int(x_);
}
bool const highly_editable_inset = par_.isInset(pos)
&& isHighlyEditableInset(par_.getInset(pos));
// if we reach the end of a struck out range, paint it
// we also don't paint across things like tables
if (running_strikeout && (highly_editable_inset || !is_struckout)) {
// FIXME this should take real text height into account, not
// the whole row including padding whitespace
//int const middle = yo_ + (- row_.ascent() + row_.top_of_text()) / 2;
int const middle = yo_ - row_.ascent() / 2;
pain_.line(last_strikeout_x, middle, int(x_), middle,
LColor::strikeout, Painter::line_solid, Painter::line_thin);
running_strikeout = false;
}
if (body_pos > 0 && pos == body_pos - 1) {
int const lwidth = font_metrics::width(layout->labelsep,
getLabelFont());
x_ += label_hfill_ + lwidth - width_pos;
}
if (par_.isHfill(pos)) {
x_ += 1;
int const y0 = yo_;
int const y1 = y0 - defaultRowHeight() / 2;
pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
if (hfillExpansion(par_, row_, pos)) {
int const y2 = (y0 + y1) / 2;
if (pos >= body_pos) {
pain_.line(int(x_), y2, int(x_ + hfill_), y2,
LColor::added_space,
Painter::line_onoffdash);
x_ += hfill_;
} else {
pain_.line(int(x_), y2, int(x_ + label_hfill_), y2,
LColor::added_space,
Painter::line_onoffdash);
x_ += label_hfill_;
}
pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
}
x_ += 2;
++vpos;
} else if (par_.isSeparator(pos)) {
x_ += width_pos;
if (pos >= body_pos)
x_ += separator_;
++vpos;
} else {
paintFromPos(vpos);
}
}
// if we reach the end of a struck out range, paint it
if (running_strikeout) {
//top_of_text = font_metrics::maxAscent(font);
//int const middle = yo_ - top_of_text() / 2;
int const middle = yo_ - row_.ascent() / 2;
pain_.line(last_strikeout_x, middle, int(x_), middle,
LColor::strikeout, Painter::line_solid, Painter::line_thin);
running_strikeout = false;
}
}
void paintPar
(PainterInfo & pi, LyXText const & text, pit_type pit, int x, int y)
{
// lyxerr << " paintPar: pit: " << pit << " at y: " << y << endl;
static NullPainter nop;
static PainterInfo nullpi(pi.base.bv, nop);
int const ww = pi.base.bv->workHeight();
Paragraph & par = text.paragraphs()[pit];
RowList::iterator const rb = par.rows().begin();
RowList::iterator const re = par.rows().end();
theCoords.pars_[&text][pit] = Point(x, y);
y -= rb->ascent();
for (RowList::iterator rit = rb; rit != re; ++rit) {
y += rit->ascent();
bool const inside = (y + rit->descent() >= 0
&& y - rit->ascent() < ww);
RowPainter rp(inside ? pi : nullpi, text, pit, *rit, x, y);
y += rit->descent();
rp.paintAppendix();
rp.paintDepthBar();
rp.paintChangeBar();
if (rit == rb)
rp.paintFirst();
if (rit + 1 == re)
rp.paintLast();
rp.paintText();
}
}
} // namespace anon
void paintText(BufferView const & bv, ViewMetricsInfo const & vi)
{
Painter & pain = bv.painter();
LyXText * const text = bv.text();
// clear background
pain.fillRectangle(0, vi.y1, bv.workWidth(), vi.y2 - vi.y1,
LColor::background);
// draw selection
PainterInfo pi(const_cast<BufferView *>(&bv), pain);
text->drawSelection(pi, 0, 0);
int yy = vi.y1;
// draw contents
for (pit_type pit = vi.p1; pit <= vi.p2; ++pit) {
yy += text->getPar(pit).ascent();
paintPar(pi, *bv.text(), pit, 0, yy);
yy += text->getPar(pit).descent();
}
// paint one paragraph above and one below
if (vi.p1 > 0) {
text->redoParagraph(vi.p1 - 1);
paintPar(pi, *bv.text(), vi.p1 - 1, 0,
vi.y1 - text->getPar(vi.p1 - 1).descent());
}
if (vi.p2 < text->paragraphs().size() - 1) {
text->redoParagraph(vi.p2 + 1);
paintPar(pi, *bv.text(), vi.p2 + 1, 0,
vi.y2 + text->getPar(vi.p2 + 1).ascent());
}
// and grey out above (should not happen later)
lyxerr << "par ascent: " << text->getPar(vi.p1).ascent() << endl;
if (vi.y1 > 0)
pain.fillRectangle(0, 0, bv.workWidth(), vi.y1, LColor::bottomarea);
// and possibly grey out below
lyxerr << "par descent: " << text->getPar(vi.p1).ascent() << endl;
if (vi.y2 < bv.workHeight())
pain.fillRectangle(0, vi.y2, bv.workWidth(), bv.workHeight() - vi.y2, LColor::bottomarea);
}
void paintTextInset(LyXText const & text, PainterInfo & pi, int x, int y)
{
// lyxerr << " paintTextInset: y: " << y << endl;
y -= text.getPar(0).ascent();
for (int pit = 0; pit < int(text.paragraphs().size()); ++pit) {
y += text.getPar(pit).ascent();
paintPar(pi, text, pit, x, y);
y += text.getPar(pit).descent();
}
}