void TextFormatter::FormatPlainText(CFDC& dc,
int& width, int& height,
int fontsize,
const wchar_t *text, int len,
LineArray& lines)
{
lines.RemoveAll();
int save_width = m_width;
bool save_justified = m_justified;
m_width = width;
m_justified = false;
const wchar_t *top = text + len;
Attr attr;
attr.wa = 0;
attr.fsize = fontsize;
int curh = 0;
while (text < top && curh < height)
{
const wchar_t *p_end = text;
while (p_end < top && *p_end != '\r' && *p_end != '\n')
++p_end;
Paragraph p(p_end - text);
memcpy(p.str, text, (p_end - text)*sizeof(wchar_t));
for (int i = 0; i < p.cflags.size(); ++i)
p.cflags[i].wa = attr.wa;
p.findent = 3; // XXX
int last = lines.GetSize();
FilePos fp = FilePos();
int lh = WrapLine(dc, p, fp, lines, curh, height - curh);
if (lh < 0)
{
// it still might add something
while (last < lines.GetSize())
curh += lines[last++].height;
break;
}
curh += lh;
while (p_end < top && (*p_end == '\r' || *p_end == '\n'))
++p_end;
text = p_end;
}
m_width = save_width;
m_justified = save_justified;
// deduct ispace
int min_ispace = -1, max_width = 0;
for (int i = 0; i < lines.GetSize(); ++i)
{
const Line& ll = lines[i];
int w = 0;
for (int j = 0; j < ll.dx.size(); ++j)
w += ll.dx[j];
w += ll.ispace;
if (max_width < w)
max_width = w;
if (min_ispace<0 || min_ispace>ll.ispace)
min_ispace = ll.ispace;
}
if (min_ispace > 0)
{
for (int i = 0; i < lines.GetSize(); ++i)
lines[i].ispace -= min_ispace;
max_width -= min_ispace;
}
height = curh;
width = max_width;
}
bool TextFormatter::FormatBack(CFDC& dc, FilePos start, FilePos prev_top)
{
AdjustPos(start, true);
if (start.para == 0 && start.off == 0)
return false; // at the top
m_lines.RemoveAll();
m_bot = start;
for (int page = m_pages - 1; page >= 0; --page)
{
LineArray tmp;
FilePos pos = start;
int h = 0;
// while there are still paragrahs before
while (h < m_height && (pos.para>0 || pos.off > 0))
{
// format entire paragraph
LineArray cp;
Paragraph para(m_tf->GetParagraph(pos.docid, pos.para));
if (pos.off < para.len) // double check args
para.len = pos.off;
else
pos.off = para.len;
FilePos fp = FilePos(pos.para, 0, pos.docid);
WrapLine(dc, para, fp, cp, 0, 32768);
// insert the formatted paragraph at start of list
tmp.InsertAt(0, &cp);
for (int i = 0; i < cp.GetSize(); ++i)
h += cp[i].height;
pos.off = 0;
AdjustPos(pos, true);
}
// delete extra lines
int j;
// remove top lines
for (h = 0, j = tmp.GetUpperBound(); j >= 0 && h + tmp[j].height <= m_height; --j)
h += tmp[j].height;
if (j < tmp.GetUpperBound())
{
if (j >= 0 && prev_top != 0 && tmp[j + 1].pos >= prev_top)
{
--j;
tmp.RemoveAt(0, j + 1);
// now remove bottom lines
for (h = j = 0; j < tmp.GetSize() && h + tmp[j].height <= m_height; ++j)
h += tmp[j].height;
if (j < tmp.GetSize())
tmp.RemoveAt(j, tmp.GetSize() - j);
}
else
{
tmp.RemoveAt(0, j + 1);
}
}
// save lines
m_lines.InsertAt(0, &tmp);
m_pagelen.SetAtGrow(page, tmp.GetSize());
start = m_lines[0].pos;
if (start.para == 0 && start.off == 0) // we reached the top of file
return FormatFwd(dc, FilePos(0, 0, start.docid));
}
// save positions
m_top = m_lines[0].pos;
Highlight();
// add one dummy line always
Line l;
l.pos = m_bot;
m_lines.Add(l);
return true;
}