WCHAR *EbookEngine::ExtractPageText(int pageNo, WCHAR *lineSep, RectI **coords_out, RenderTarget target)
{
ScopedCritSec scope(&pagesAccess);
str::Str<WCHAR> content;
Vec<RectI> coords;
bool insertSpace = false;
Vec<DrawInstr> *pageInstrs = GetHtmlPage(pageNo);
for (DrawInstr *i = pageInstrs->IterStart(); i; i = pageInstrs->IterNext()) {
RectI bbox = GetInstrBbox(i, pageBorder);
switch (i->type) {
case InstrString:
if (coords.Count() > 0 && bbox.x < coords.Last().BR().x) {
content.Append(lineSep);
coords.AppendBlanks(str::Len(lineSep));
CrashIf(*lineSep && !coords.Last().IsEmpty());
}
else if (insertSpace && coords.Count() > 0) {
int swidth = bbox.x - coords.Last().BR().x;
if (swidth > 0) {
content.Append(' ');
coords.Append(RectI(bbox.x - swidth, bbox.y, swidth, bbox.dy));
}
}
insertSpace = false;
{
ScopedMem<WCHAR> s(str::conv::FromHtmlUtf8(i->str.s, i->str.len));
content.Append(s);
size_t len = str::Len(s);
double cwidth = 1.0 * bbox.dx / len;
for (size_t k = 0; k < len; k++)
coords.Append(RectI((int)(bbox.x + k * cwidth), bbox.y, (int)cwidth, bbox.dy));
}
break;
case InstrRtlString:
if (coords.Count() > 0 && bbox.BR().x > coords.Last().x) {
content.Append(lineSep);
coords.AppendBlanks(str::Len(lineSep));
CrashIf(*lineSep && !coords.Last().IsEmpty());
}
else if (insertSpace && coords.Count() > 0) {
int swidth = coords.Last().x - bbox.BR().x;
if (swidth > 0) {
content.Append(' ');
coords.Append(RectI(bbox.BR().x, bbox.y, swidth, bbox.dy));
}
}
insertSpace = false;
{
ScopedMem<WCHAR> s(str::conv::FromHtmlUtf8(i->str.s, i->str.len));
content.Append(s);
size_t len = str::Len(s);
double cwidth = 1.0 * bbox.dx / len;
for (size_t k = 0; k < len; k++)
coords.Append(RectI((int)(bbox.x + (len - k - 1) * cwidth), bbox.y, (int)cwidth, bbox.dy));
}
break;
case InstrElasticSpace:
case InstrFixedSpace:
insertSpace = true;
break;
}
}
if (coords_out) {
CrashIf(coords.Count() != content.Count());
*coords_out = new RectI[coords.Count()];
memcpy(*coords_out, coords.LendData(), coords.Count() * sizeof(RectI));
}
return content.StealData();
}
