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lyx_mirror/src/rowpainter.cpp
Jürgen Spitzmüller f521c4601d Fix inset drawing issues (bug 3582) 
* src/rowpainter.cpp:
	- inNarrowInset: fix method
	- paintPar: repaint if we are in a narrow inset.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@19111 a592a061-630c-0410-9148-cb99ea01b6c8
2007-07-18 09:54:38 +00:00

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/**
* \file rowpainter.cpp
* 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 "Bidi.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 "Color.h"
#include "LyXRC.h"
#include "Row.h"
#include "MetricsInfo.h"
#include "Paragraph.h"
#include "ParagraphMetrics.h"
#include "paragraph_funcs.h"
#include "ParagraphParameters.h"
#include "TextMetrics.h"
#include "VSpace.h"
#include "frontends/FontMetrics.h"
#include "frontends/Painter.h"
#include "insets/InsetText.h"
#include "support/textutils.h"
#include <boost/crc.hpp>
namespace lyx {
using frontend::Painter;
using frontend::FontMetrics;
using std::endl;
using std::max;
using std::string;
namespace {
/// Flag: do a full redraw of inside text of inset
/// Working variable indicating a full screen refresh
bool refreshInside;
/**
* A class used for painting an individual row of text.
*/
class RowPainter {
public:
/// initialise and run painter
RowPainter(PainterInfo & pi, Text const & text,
pit_type pit, Row const & row, Bidi & bidi, int x, int y);
// paint various parts
void paintAppendix();
void paintDepthBar();
void paintChangeBar();
void paintFirst();
void paintLast();
void paintText();
int maxWidth() { return max_width_; }
private:
void paintForeignMark(double orig_x, Font const & font, int desc = 0);
void paintHebrewComposeChar(pos_type & vpos, Font const & font);
void paintArabicComposeChar(pos_type & vpos, Font const & font);
void paintChars(pos_type & vpos, Font const & font,
bool hebrew, bool arabic);
int paintAppendixStart(int y);
void paintFromPos(pos_type & vpos);
void paintInset(pos_type const pos, Font const & font);
/// return left margin
int leftMargin() const;
/// return the label font for this row
Font const getLabelFont() const;
/// bufferview to paint on
BufferView & bv_;
/// Painter to use
Painter & pain_;
/// Text for the row
Text const & text_;
TextMetrics & text_metrics_;
ParagraphList const & pars_;
/// The row to paint
Row const & row_;
/// Row's paragraph
pit_type const pit_;
Paragraph const & par_;
ParagraphMetrics const & pm_;
int max_width_;
/// bidi cache, comes from outside the rowpainter because
/// rowpainters are normally created in a for loop and there only
/// one of them is active at a time.
Bidi & bidi_;
/// is row erased? (change tracking)
bool erased_;
// 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,
Text const & text, pit_type pit, Row const & row, Bidi & bidi, int x, int y)
: bv_(*pi.base.bv), pain_(pi.pain), text_(text),
text_metrics_(pi.base.bv->textMetrics(&text)),
pars_(text.paragraphs()),
row_(row), pit_(pit), par_(text.paragraphs()[pit]),
pm_(text_metrics_.parMetrics(pit)),
max_width_(bv_.workWidth()),
bidi_(bidi), erased_(pi.erased_),
xo_(x), yo_(y), width_(text_metrics_.width())
{
RowMetrics m = text_metrics_.computeRowMetrics(pit_, row_);
bidi_.computeTables(par_, *bv_.buffer(), 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()));
}
Font const RowPainter::getLabelFont() const
{
return text_.getLabelFont(*bv_.buffer(), par_);
}
int RowPainter::leftMargin() const
{
return text_.leftMargin(*bv_.buffer(), max_width_, pit_, row_.pos());
}
// If you want to debug inset metrics uncomment the following line:
// #define DEBUG_METRICS
// This draws green lines around each inset.
void RowPainter::paintInset(pos_type const pos, Font const & font)
{
Inset const * inset = par_.getInset(pos);
BOOST_ASSERT(inset);
PainterInfo pi(const_cast<BufferView *>(&bv_), pain_);
// FIXME: We should always use font, see documentation of
// noFontChange() in Inset.h.
pi.base.font = inset->noFontChange() ?
bv_.buffer()->params().getFont() :
font;
pi.ltr_pos = (bidi_.level(pos) % 2 == 0);
pi.erased_ = erased_ || par_.isDeleted(pos);
#ifdef DEBUG_METRICS
int const x1 = int(x_);
#endif
bv_.coordCache().insets().add(inset, int(x_), yo_);
InsetText const * const in = inset->asTextInset();
// non-wide insets are painted completely. Recursive
bool tmp = refreshInside;
if (!in || !in->wide()) {
refreshInside = true;
LYXERR(Debug::PAINTING) << endl << "Paint inset fully" << endl;
}
if (refreshInside)
inset->drawSelection(pi, int(x_), yo_);
inset->draw(pi, int(x_), yo_);
refreshInside = tmp;
x_ += inset->width();
#ifdef DEBUG_METRICS
Dimension dim;
BOOST_ASSERT(max_witdh_ > 0);
int right_margin = text_metrics_.rightMargin(pm_);
int const w = max_witdh_ - leftMargin() - right_margin;
MetricsInfo mi(&bv_, font, w);
inset->metrics(mi, dim);
if (inset->width() > dim.wid)
lyxerr << "Error: inset " << to_ascii(inset->getInsetName())
<< " draw width " << inset->width()
<< "> metrics width " << dim.wid << "." << std::endl;
if (inset->ascent() > dim.asc)
lyxerr << "Error: inset " << to_ascii(inset->getInsetName())
<< " draw ascent " << inset->ascent()
<< "> metrics ascent " << dim.asc << "." << std::endl;
if (inset->descent() > dim.des)
lyxerr << "Error: inset " << to_ascii(inset->getInsetName())
<< " draw ascent " << inset->descent()
<< "> metrics descent " << dim.des << "." << std::endl;
BOOST_ASSERT(inset->width() <= dim.wid);
BOOST_ASSERT(inset->ascent() <= dim.asc);
BOOST_ASSERT(inset->descent() <= dim.des);
int const x2 = x1 + dim.wid;
int const y1 = yo_ + dim.des;
int const y2 = yo_ - dim.asc;
pi.pain.line(x1, y1, x1, y2, Color::green);
pi.pain.line(x1, y1, x2, y1, Color::green);
pi.pain.line(x2, y1, x2, y2, Color::green);
pi.pain.line(x1, y2, x2, y2, Color::green);
#endif
}
void RowPainter::paintHebrewComposeChar(pos_type & vpos, Font const & font)
{
pos_type pos = bidi_.vis2log(vpos);
docstring str;
// first char
char_type c = par_.getChar(pos);
str += c;
++vpos;
int const width = theFontMetrics(font).width(c);
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 = text_.singleWidth(par_, i, c,
text_.getFont(*bv_.buffer(), par_, i));
dx = (c == 0x05e8 || // resh
c == 0x05d3) // dalet
? width2 - width
: (width2 - width) / 2;
}
break;
}
}
// Draw nikud
pain_.text(int(x_) + dx, yo_, str, font);
}
void RowPainter::paintArabicComposeChar(pos_type & vpos, Font const & font)
{
pos_type pos = bidi_.vis2log(vpos);
docstring str;
// first char
char_type c = par_.getChar(pos);
c = par_.transformChar(c, pos);
str += c;
++vpos;
int const width = theFontMetrics(font).width(c);
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 = text_.singleWidth(par_, i, c,
text_.getFont(*bv_.buffer(), par_, i));
dx = (width2 - width) / 2;
}
break;
}
}
// Draw nikud
pain_.text(int(x_) + dx, yo_, str, font);
}
void RowPainter::paintChars(pos_type & vpos, Font const & font,
bool hebrew, bool arabic)
{
// This method takes up 70% of time when typing
pos_type pos = bidi_.vis2log(vpos);
pos_type const end = row_.endpos();
FontSpan const font_span = par_.fontSpan(pos);
Change::Type const prev_change = par_.lookupChange(pos).type;
// first character
std::vector<char_type> str;
str.reserve(100);
str.push_back(par_.getChar(pos));
if (arabic) {
char_type c = str[0];
if (c == '(')
c = ')';
else if (c == ')')
c = '(';
str[0] = par_.transformChar(c, pos);
}
// collect as much similar chars as we can
for (++vpos ; vpos < end ; ++vpos) {
pos = bidi_.vis2log(vpos);
if (pos < font_span.first || pos > font_span.last)
break;
if (prev_change != par_.lookupChange(pos).type)
break;
char_type c = par_.getChar(pos);
if (!isPrintableNonspace(c))
break;
/* Because we do our own bidi, at this point the strings are
* already in visual order. However, Qt also applies its own
* bidi algorithm to strings that it paints to the screen.
* Therefore, if we were to paint Hebrew/Arabic words as a
* single string, the letters in the words would get reversed
* again. In order to avoid that, we don't collect Hebrew/
* Arabic characters, but rather paint them one at a time.
* See also http://thread.gmane.org/gmane.editors.lyx.devel/79740
*/
if (hebrew)
break;
/* FIXME: these checks are irrelevant, since 'arabic' and
* 'hebrew' alone are already going to trigger a break.
* However, this should not be removed completely, because
* if an alternative solution is found which allows grouping
* of arabic and hebrew characters, then these breaks may have
* to be re-applied.
if (arabic && Encodings::isComposeChar_arabic(c))
break;
if (hebrew && Encodings::isComposeChar_hebrew(c))
break;
*/
if (arabic) {
if (c == '(')
c = ')';
else if (c == ')')
c = '(';
c = par_.transformChar(c, pos);
/* see comment in hebrew, explaining why we break */
break;
}
str.push_back(c);
}
docstring s(&str[0], str.size());
if (prev_change != Change::UNCHANGED) {
Font copy(font);
if (prev_change == Change::DELETED) {
copy.setColor(Color::deletedtext);
} else if (prev_change == Change::INSERTED) {
copy.setColor(Color::addedtext);
}
x_ += pain_.text(int(x_), yo_, s, copy);
} else {
x_ += pain_.text(int(x_), yo_, s, font);
}
}
void RowPainter::paintForeignMark(double orig_x, Font const & font, int desc)
{
if (!lyxrc.mark_foreign_language)
return;
if (font.language() == latex_language)
return;
if (font.language() == bv_.buffer()->params().language)
return;
int const y = yo_ + 1 + desc;
pain_.line(int(orig_x), y, int(x_), y, Color::language);
}
void RowPainter::paintFromPos(pos_type & vpos)
{
pos_type const pos = bidi_.vis2log(vpos);
Font orig_font = text_.getFont(*bv_.buffer(), par_, pos);
double const orig_x = x_;
if (par_.isInset(pos)) {
paintInset(pos, orig_font);
++vpos;
paintForeignMark(orig_x, orig_font,
par_.getInset(pos)->descent());
return;
}
// usual characters, no insets
char_type const c = par_.getChar(pos);
// special case languages
std::string const & lang = orig_font.language()->lang();
bool const hebrew = lang == "hebrew";
bool const arabic = lang == "arabic_arabtex" || lang == "arabic_arabi" ||
lang == "farsi";
// draw as many chars as we can
if ((!hebrew && !arabic)
|| (hebrew && !Encodings::isComposeChar_hebrew(c))
|| (arabic && !Encodings::isComposeChar_arabic(c))) {
paintChars(vpos, orig_font, hebrew, arabic);
} else if (hebrew) {
paintHebrewComposeChar(vpos, orig_font);
} else if (arabic) {
paintArabicComposeChar(vpos, orig_font);
}
paintForeignMark(orig_x, orig_font);
}
void RowPainter::paintChangeBar()
{
pos_type const start = row_.pos();
pos_type end = row_.endpos();
if (par_.size() == end) {
// this is the last row of the paragraph;
// thus, we must also consider the imaginary end-of-par character
end++;
}
if (start == end || !par_.isChanged(start, end))
return;
int const height = text_.isLastRow(pit_, row_)
? row_.ascent()
: row_.height();
pain_.fillRectangle(5, yo_ - row_.ascent(), 3, height, Color::changebar);
}
void RowPainter::paintAppendix()
{
// only draw the appendix frame once (for the main text)
if (!par_.params().appendix() || !text_.isMainText(*bv_.buffer()))
return;
int y = yo_ - row_.ascent();
if (par_.params().startOfAppendix())
y += 2 * defaultRowHeight();
pain_.line(1, y, 1, yo_ + row_.height(), Color::appendix);
pain_.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), Color::appendix);
}
void RowPainter::paintDepthBar()
{
depth_type const depth = par_.getDepth();
if (depth <= 0)
return;
depth_type prev_depth = 0;
if (!text_.isFirstRow(pit_, row_)) {
pit_type pit2 = pit_;
if (row_.pos() == 0)
--pit2;
prev_depth = pars_[pit2].getDepth();
}
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 (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(*bv_.buffer()))
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, Color::depthbar);
if (i > prev_depth)
pain_.fillRectangle(x, starty, w, 2, Color::depthbar);
if (i > next_depth)
pain_.fillRectangle(x, starty + h, w, 2, Color::depthbar);
}
}
int RowPainter::paintAppendixStart(int y)
{
Font pb_font;
pb_font.setColor(Color::appendix);
pb_font.decSize();
int w = 0;
int a = 0;
int d = 0;
docstring const label = _("Appendix");
theFontMetrics(pb_font).rectText(label, 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, Color::none, Color::none);
pain_.line(int(xo_ + 1), y, text_start, y, Color::appendix);
pain_.line(text_end, y, int(xo_ + width_ - 2), y, Color::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_ - row_.ascent() + 2 * defaultRowHeight());
Buffer const & buffer = *bv_.buffer();
Layout_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 {
Layout_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(buffer, 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)) {
Font const font = getLabelFont();
FontMetrics const & fm = theFontMetrics(font);
docstring const str = par_.getLabelstring();
if (!str.empty()) {
double x = x_;
// 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") {
double spacing_val = 1.0;
if (!parparams.spacing().isDefault()) {
spacing_val = parparams.spacing().getValue();
} else {
spacing_val = buffer.params().spacing().getValue();
}
int const labeladdon = int(fm.maxHeight() * layout->spacing.getValue() * spacing_val);
int const maxdesc = int(fm.maxDescent() * layout->spacing.getValue() * spacing_val)
+ int(layout->parsep) * defaultRowHeight();
if (is_rtl) {
x = width_ - leftMargin() -
fm.width(str);
}
pain_.text(int(x), yo_ - maxdesc - labeladdon, str, font);
} else {
// FIXME UNICODE
docstring lab = from_utf8(layout->labelsep);
if (is_rtl) {
x = width_ - leftMargin()
+ fm.width(lab);
} else {
x = x_ - fm.width(lab)
- fm.width(str);
}
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)) {
Font font = getLabelFont();
if (!par_.getLabelstring().empty()) {
docstring 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();
FontMetrics const & fm = theFontMetrics(font);
int const labeladdon = int(fm.maxHeight()
* layout->spacing.getValue() * spacing_val);
int maxdesc =
int(fm.maxDescent() * layout->spacing.getValue() * spacing_val
+ (layout->labelbottomsep * defaultRowHeight()));
double x = x_;
if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
if (is_rtl)
x = leftMargin();
x += (width_ - text_metrics_.rightMargin(pm_) - leftMargin()) / 2;
x -= fm.width(str) / 2;
} else if (is_rtl) {
x = width_ - leftMargin() - fm.width(str);
}
pain_.text(int(x), yo_ - maxdesc - labeladdon, str, font);
}
}
}
void RowPainter::paintLast()
{
bool const is_rtl = text_.isRTL(*bv_.buffer(), par_);
int const endlabel = getEndLabel(pit_, text_.paragraphs());
// paint imaginary end-of-paragraph character
if (par_.isInserted(par_.size()) || par_.isDeleted(par_.size())) {
FontMetrics const & fm = theFontMetrics(bv_.buffer()->params().getFont());
int const length = fm.maxAscent() / 2;
Color::color col = par_.isInserted(par_.size()) ? Color::addedtext : Color::deletedtext;
pain_.line(int(x_) + 1, yo_ + 2, int(x_) + 1, yo_ + 2 - length, col,
Painter::line_solid, Painter::line_thick);
pain_.line(int(x_) + 1 - length, yo_ + 2, int(x_) + 1, yo_ + 2, col,
Painter::line_solid, Painter::line_thick);
}
// draw an endlabel
switch (endlabel) {
case END_LABEL_BOX:
case END_LABEL_FILLED_BOX: {
Font const font = getLabelFont();
FontMetrics const & fm = theFontMetrics(font);
int const size = int(0.75 * fm.maxAscent());
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, Color::eolmarker);
else
pain_.fillRectangle(x, y, size, size, Color::eolmarker);
break;
}
case END_LABEL_STATIC: {
Font font = getLabelFont();
FontMetrics const & fm = theFontMetrics(font);
docstring const & str = par_.layout()->endlabelstring();
double const x = is_rtl ?
x_ - fm.width(str)
: - text_metrics_.rightMargin(pm_) - 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();
// Spaces at logical line breaks in bidi text must be skipped during
// painting. However, they may appear visually in the middle
// of a row; they must be skipped, wherever they are...
// * logically "abc_[HEBREW_\nHEBREW]"
// * visually "abc_[_WERBEH\nWERBEH]"
pos_type skipped_sep_vpos = -1;
pos_type body_pos = par_.beginOfBody();
if (body_pos > 0 &&
(body_pos > end || !par_.isLineSeparator(body_pos - 1))) {
body_pos = 0;
}
Layout_ptr const & layout = par_.layout();
bool running_strikeout = false;
bool is_struckout = false;
int last_strikeout_x = 0;
// Use font span to speed things up, see below
FontSpan font_span;
Font font;
Buffer const & buffer = *bv_.buffer();
// If the last logical character is a separator, don't paint it, unless
// it's in the last row of a paragraph; see skipped_sep_vpos declaration
if (end > 0 && end < par_.size() && par_.isSeparator(end - 1))
skipped_sep_vpos = bidi_.log2vis(end - 1);
for (pos_type vpos = row_.pos(); vpos < end; ) {
if (x_ > bv_.workWidth())
break;
// Skip the separator at the logical end of the row
if (vpos == skipped_sep_vpos) {
++vpos;
continue;
}
pos_type const pos = bidi_.vis2log(vpos);
if (pos >= par_.size()) {
++vpos;
continue;
}
// Use font span to speed things up, see above
if (vpos < font_span.first || vpos > font_span.last) {
font_span = par_.fontSpan(vpos);
font = text_.getFont(buffer, par_, vpos);
}
const int width_pos =
text_.singleWidth(par_, pos, par_.getChar(pos), font);
if (x_ + width_pos < 0) {
x_ += width_pos;
++vpos;
continue;
}
is_struckout = par_.isDeleted(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)) {
// Calculate 1/3 height of the buffer's default font
FontMetrics const & fm
= theFontMetrics(bv_.buffer()->params().getFont());
int const middle = yo_ - fm.maxAscent() / 3;
pain_.line(last_strikeout_x, middle, int(x_), middle,
Color::deletedtext, Painter::line_solid, Painter::line_thin);
running_strikeout = false;
}
if (body_pos > 0 && pos == body_pos - 1) {
// FIXME UNICODE
int const lwidth = theFontMetrics(getLabelFont())
.width(from_utf8(layout->labelsep));
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, Color::added_space);
if (par_.hfillExpansion(row_, pos)) {
int const y2 = (y0 + y1) / 2;
if (pos >= body_pos) {
pain_.line(int(x_), y2, int(x_ + hfill_), y2,
Color::added_space,
Painter::line_onoffdash);
x_ += hfill_;
} else {
pain_.line(int(x_), y2, int(x_ + label_hfill_), y2,
Color::added_space,
Painter::line_onoffdash);
x_ += label_hfill_;
}
pain_.line(int(x_), y1, int(x_), y0, Color::added_space);
}
x_ += 2;
++vpos;
} else if (par_.isSeparator(pos)) {
Font orig_font = text_.getFont(*bv_.buffer(), par_, pos);
double const orig_x = x_;
x_ += width_pos;
if (pos >= body_pos)
x_ += separator_;
++vpos;
paintForeignMark(orig_x, orig_font);
} else {
paintFromPos(vpos);
}
}
// if we reach the end of a struck out range, paint it
if (running_strikeout) {
// calculate 1/3 height of the buffer's default font
FontMetrics const & fm
= theFontMetrics(bv_.buffer()->params().getFont());
int const middle = yo_ - fm.maxAscent() / 3;
pain_.line(last_strikeout_x, middle, int(x_), middle,
Color::deletedtext, Painter::line_solid, Painter::line_thin);
running_strikeout = false;
}
}
bool CursorOnRow(PainterInfo & pi, pit_type const pit,
RowList::const_iterator rit, Text const & text)
{
// Is there a cursor on this row (or inside inset on row)
Cursor & cur = pi.base.bv->cursor();
for (size_type d = 0; d < cur.depth(); ++d) {
CursorSlice const & sl = cur[d];
if (sl.text() == &text
&& sl.pit() == pit
&& sl.pos() >= rit->pos()
&& sl.pos() <= rit->endpos())
return true;
}
return false;
}
bool innerCursorOnRow(PainterInfo & pi, pit_type pit,
RowList::const_iterator rit, Text const & text)
{
// Is there a cursor inside an inset on this row, and is this inset
// the only "character" on this row
Cursor & cur = pi.base.bv->cursor();
if (rit->pos() + 1 != rit->endpos())
return false;
for (size_type d = 0; d < cur.depth(); d++) {
CursorSlice const & sl = cur[d];
if (sl.text() == &text
&& sl.pit() == pit
&& sl.pos() == rit->pos())
return d < cur.depth() - 1;
}
return false;
}
// FIXME: once wide() is obsolete, remove this as well!
bool inNarrowInset(PainterInfo & pi)
{
// check whether the current inset is nested in a non-wide inset
Cursor & cur = pi.base.bv->cursor();
Inset const * cur_in = &cur.inset();
// check all higher nested insets
for (size_type i = 1; i < cur.depth(); ++i) {
Inset * const in = &cur[i].inset();
if (in == cur_in)
// we reached the level of the current inset, so stop
return false;
else if (in) {
if (in->hasFixedWidth())
return true;
InsetText * t =
const_cast<InsetText *>(in->asTextInset());
if (t && !t->wide())
// OK, we are in a non-wide() inset
return true;
}
}
return false;
}
void paintPar
(PainterInfo & pi, Text const & text, pit_type pit, int x, int y,
bool repaintAll)
{
// lyxerr << " paintPar: pit: " << pit << " at y: " << y << endl;
int const ww = pi.base.bv->workHeight();
pi.base.bv->coordCache().parPos()[&text][pit] = Point(x, y);
Paragraph const & par = text.paragraphs()[pit];
ParagraphMetrics const & pm = pi.base.bv->parMetrics(&text, pit);
if (pm.rows().empty())
return;
RowList::const_iterator const rb = pm.rows().begin();
RowList::const_iterator const re = pm.rows().end();
Bidi bidi;
y -= rb->ascent();
size_type rowno = 0;
for (RowList::const_iterator rit = rb; rit != re; ++rit, ++rowno) {
y += rit->ascent();
// Allow setting of refreshInside for nested insets in
// this row only
bool tmp = refreshInside;
// Row signature; has row changed since last paint?
bool row_has_changed = pm.rowChangeStatus()[rowno];
bool cursor_on_row = CursorOnRow(pi, pit, rit, text);
bool in_inset_alone_on_row =
innerCursorOnRow(pi, pit, rit, text);
bool leftEdgeFixed =
(par.getAlign() == LYX_ALIGN_LEFT ||
par.getAlign() == LYX_ALIGN_BLOCK);
bool inNarrowIns = inNarrowInset(pi);
// If this is the only object on the row, we can make it wide
//
// FIXME: there is a const_cast here because paintPar() is not supposed
// to touch the paragraph contents. So either we move this "wide"
// property out of InsetText or we localize the feature to the painting
// done here.
// JSpitzm: We should aim at removing wide() altogether while retaining
// typing speed within insets.
for (pos_type i = rit->pos() ; i != rit->endpos(); ++i) {
Inset const * const in = par.getInset(i);
if (in) {
InsetText * t = const_cast<InsetText *>(in->asTextInset());
if (t)
t->setWide(in_inset_alone_on_row
&& leftEdgeFixed
&& !inNarrowIns);
}
}
// If selection is on, the current row signature differs
// from cache, or cursor is inside an inset _on this row_,
// then paint the row
if (repaintAll || row_has_changed || cursor_on_row) {
bool const inside = (y + rit->descent() >= 0
&& y - rit->ascent() < ww);
// it is not needed to draw on screen if we are not inside.
pi.pain.setDrawingEnabled(inside);
RowPainter rp(pi, text, pit, *rit, bidi, x, y);
// Clear background of this row
// (if paragraph background was not cleared)
if (!repaintAll &&
(!(in_inset_alone_on_row && leftEdgeFixed && !inNarrowIns)
|| row_has_changed)) {
pi.pain.fillRectangle(x, y - rit->ascent(),
rp.maxWidth(), rit->height(),
text.backgroundColor());
// If outer row has changed, force nested
// insets to repaint completely
if (row_has_changed)
refreshInside = true;
}
// Instrumentation for testing row cache (see also
// 12 lines lower):
if (lyxerr.debugging(Debug::PAINTING)) {
if (text.isMainText(*pi.base.bv->buffer()))
LYXERR(Debug::PAINTING) << "#";
else
LYXERR(Debug::PAINTING) << "[" <<
repaintAll << row_has_changed <<
cursor_on_row << "]";
}
rp.paintAppendix();
rp.paintDepthBar();
rp.paintChangeBar();
if (rit == rb)
rp.paintFirst();
rp.paintText();
if (rit + 1 == re)
rp.paintLast();
}
y += rit->descent();
// Restore, see above
refreshInside = tmp;
}
// Re-enable screen drawing for future use of the painter.
pi.pain.setDrawingEnabled(true);
LYXERR(Debug::PAINTING) << "." << endl;
}
} // namespace anon
void paintText(BufferView & bv,
Painter & pain)
{
BOOST_ASSERT(bv.buffer());
Buffer const & buffer = *bv.buffer();
Text & text = buffer.text();
bool const select = bv.cursor().selection();
ViewMetricsInfo const & vi = bv.viewMetricsInfo();
PainterInfo pi(const_cast<BufferView *>(&bv), pain);
// Should the whole screen, including insets, be refreshed?
// FIXME: We should also distinguish DecorationUpdate to avoid text
// drawing if possible. This is not possible to do easily right now
// because of the single backing pixmap.
bool repaintAll = select || vi.update_strategy != SingleParUpdate;
if (repaintAll) {
// Clear background (if not delegated to rows)
pain.fillRectangle(0, vi.y1, bv.workWidth(), vi.y2 - vi.y1,
text.backgroundColor());
}
if (select) {
text.drawSelection(pi, 0, 0);
}
int yy = vi.y1;
// draw contents
for (pit_type pit = vi.p1; pit <= vi.p2; ++pit) {
refreshInside = repaintAll;
ParagraphMetrics const & pm = bv.parMetrics(&text, pit);
yy += pm.ascent();
paintPar(pi, text, pit, 0, yy, repaintAll);
yy += pm.descent();
}
// and grey out above (should not happen later)
// lyxerr << "par ascent: " << text.getPar(vi.p1).ascent() << endl;
if (vi.y1 > 0 && vi.update_strategy == FullScreenUpdate)
pain.fillRectangle(0, 0, bv.workWidth(), vi.y1, Color::bottomarea);
// and possibly grey out below
// lyxerr << "par descent: " << text.getPar(vi.p1).ascent() << endl;
if (vi.y2 < bv.workHeight() && vi.update_strategy == FullScreenUpdate)
pain.fillRectangle(0, vi.y2, bv.workWidth(), bv.workHeight() - vi.y2, Color::bottomarea);
}
void paintTextInset(Text const & text, PainterInfo & pi, int x, int y)
{
// lyxerr << " paintTextInset: y: " << y << endl;
y -= pi.base.bv->parMetrics(&text, 0).ascent();
// This flag cannot be set from within same inset:
bool repaintAll = refreshInside;
for (int pit = 0; pit < int(text.paragraphs().size()); ++pit) {
ParagraphMetrics const & pmi
= pi.base.bv->parMetrics(&text, pit);
y += pmi.ascent();
paintPar(pi, text, pit, x, y, repaintAll);
y += pmi.descent();
}
}
} // namespace lyx
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