void ImageWrapper::NewImage( const v8::FunctionCallbackInfo< v8::Value >& args)
{
v8::Isolate* isolate = args.GetIsolate();
v8::HandleScope handleScope( isolate);
if(!args.IsConstructCall())
{
DALI_SCRIPT_EXCEPTION( isolate, "Image constructor called without 'new'");
return;
}
// find out the callee function name...e.g. BufferImage, ResourceImage
v8::Local<v8::Function> callee = args.Callee();
v8::Local<v8::Value> v8String = callee->GetName();
std::string typeName = V8Utils::v8StringToStdString( v8String );
ImageType imageType = GetImageType( typeName );
if( imageType == UNKNOWN_IMAGE_TYPE )
{
DALI_SCRIPT_EXCEPTION( isolate, "unknown image type");
return;
}
Image image = (ImageApiLookup[imageType].constructor)( args );
if( ! image )
{
// a v8 exception will have been thrown by the constructor
return;
}
v8::Local<v8::Object> localObject = WrapImage( isolate, image, imageType );
args.GetReturnValue().Set( localObject );
}
v8::Handle<v8::Object> ImageWrapper::WrapImage(v8::Isolate* isolate, const Dali::Image& image )
{
v8::EscapableHandleScope handleScope( isolate );
v8::Local<v8::Object> object = WrapImage( isolate, image, GetImageType( image.GetTypeName() ) );
return handleScope.Escape( object );
}
// the formatter's core, wraps the line and justifies it if needed
int TextFormatter::WrapLine(CFDC& dc, Paragraph& pp,
FilePos& pos, LineArray& la,
int top, int maxh)
{
if (maxh <= 0)
return 0;
// process images separately
if (pp.flags&Paragraph::image)
return WrapImage(dc, pp, pos, la, top, maxh);
if (pp.len == 0 || (pp.len == 1 && pp.str[0] == L' '))
{
dc.SelectFont(0, 0);
int fh, fa;
dc.GetFontSize(fh, fa);
if (fh > maxh)
return -1;
Line l;
l.pos = pos;
l.flags = Line::first | Line::last | Line::defstyle;
l.height = fh;
l.base = fa;
la.Add(l);
pos.off = pp.len;
return l.height;
}
if (m_hyphenate)
pp.Hyphenate();
const wchar_t *str = pp.str;
int len = pp.len;
Buffer<int> dx(len + 1);
int toth = 0;
while (toth < maxh && pos.off < len)
{
// 1. get text size
int nch = len;
int curwidth = m_width;
int ispace = 0;
if (pos.off == 0 && (pp.flags&(Paragraph::center | Paragraph::right)) == 0)
AdjustIndent(curwidth, ispace, pp.lindent, pp.rindent, pp.findent, dc.GetLPX());
else
AdjustIndent(curwidth, ispace, pp.lindent, pp.rindent, 0, dc.GetLPX());
dx[0] = 0;
int lh = 1, lbase = 1;
GetTextExtent(dc, pp, pos.off, curwidth, nch, dx + 1, lh, lbase);
if (toth + lh > maxh)
return -1;
if (nch == 0)
nch = 1;
// 2. do word wrap
bool addhyp = false;
if (nch + pos.off < pp.str.size())
{
int i;
for (i = nch; i > 0 && str[pos.off + i] != L' '; --i)
{
// wrap at existing dashes
if (i < nch && (str[pos.off + i] == L'-' || str[pos.off + i] == 0x2013 ||
str[pos.off + i] == 0x2014) && i < len - 1 && (str[pos.off + i + 1] == L' ' ||
iswalpha(str[pos.off + i + 1])))
{
++i;
break;
}
// or at possible hyphenation points
if (m_hyphenate && pp.cflags[pos.off + i].hyphen &&
dx[i] + dc.GetHypWidth() <= curwidth)
{
addhyp = true;
break;
}
}
if (i > 0)
nch = i;
else
addhyp = false;
}
// insert it into line list
if (pos.off == 0 && nch == pp.str.size())
{
// got full line
Line l(str, len, false);
l.pos = pos;
l.flags = Line::first | Line::last;
l.ispace = ispace;
l.height = lh;
l.base = lbase;
if (dx[nch] < curwidth)
{
if (pp.flags&Paragraph::center)
l.ispace += (curwidth - dx[nch]) / 2;
else if (pp.flags&Paragraph::right)
l.ispace += curwidth - dx[nch];
}
CopyAttr(l.attr, pp.cflags, len);
for (int j = 0; j < len; ++j)
l.dx[j] = dx[j + 1] - dx[j];
la.Add(l);
pos.off = len;
}
else
{
Line l(str + pos.off, nch, addhyp);
if (addhyp)
l.str[nch] = L'-';
l.pos = pos;
l.ispace = ispace;
l.height = lh;
l.base = lbase;
l.flags = 0;
if (pos.off == 0)
l.flags |= Line::first;
if (pos.off + nch == pp.str.size())
l.flags |= Line::last;
for (int j = 0; j < nch; ++j)
l.dx[j] = dx[j + 1] - dx[j];
int extra_width = 0;
if (addhyp)
l.dx[nch] = extra_width = dc.GetHypWidth();
// 3. justify/center text if needed
if (dx[nch] < curwidth)
{
if (addhyp)
curwidth -= extra_width;
if (pp.flags&Paragraph::center)
{
l.ispace += (curwidth - dx[nch]) / 2;
}
else if (pp.flags&Paragraph::right)
{
l.ispace += curwidth - dx[nch];
}
else if ((m_justified || pp.flags&Paragraph::justify) &&
!(l.flags&Line::last))
{
// count spaces in string
int nspc = 0, i;
for (i = 0; i < nch; ++i)
if (L' ' == str[pos.off + i])
++nspc;
// and distribute extra width to them
if (nspc > 0)
{
int addw = (curwidth - dx[nch]) / nspc;
int extraddw = curwidth - dx[nch] - addw*nspc;
for (i = 0; i < nch; ++i)
{
if (str[pos.off + i] == L' ')
{
l.dx[i] += addw;
if (extraddw)
{
++l.dx[i];
--extraddw;
}
}
}
}
}
}
CopyAttr(l.attr, pp.cflags + pos.off, nch);
if (addhyp)
l.attr[nch] = l.attr[nch - 1];
la.Add(l);
pos.off += nch;
while (pos.off < len && str[pos.off] == L' ')
++pos.off;
}
toth += lh;
}
return toth;
}