/usr/include/cegui-0.8.4/CEGUI/RenderedStringWordWrapper.h is in libcegui-mk2-dev 0.8.4+dfsg-4ubuntu1.
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created: 25/05/2009
author: Paul Turner
*************************************************************************/
/***************************************************************************
* Copyright (C) 2004 - 2009 Paul D Turner & The CEGUI Development Team
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
***************************************************************************/
#ifndef _CEGUIRenderedStringWordWrapper_h_
#define _CEGUIRenderedStringWordWrapper_h_
#include "CEGUI/FormattedRenderedString.h"
#include "CEGUI/JustifiedRenderedString.h"
#include "CEGUI/Vector.h"
#include <vector>
// Start of CEGUI namespace section
namespace CEGUI
{
/*!
\brief
Class that handles wrapping of a rendered string into sub-strings. Each
sub-string is rendered using the FormattedRenderedString based class 'T'.
*/
template <typename T>
class RenderedStringWordWrapper : public FormattedRenderedString
{
public:
//! Constructor.
RenderedStringWordWrapper(const RenderedString& string);
//! Destructor.
~RenderedStringWordWrapper();
// implementation of base interface
void format(const Window* ref_wnd, const Sizef& area_size);
void draw(const Window* ref_wnd, GeometryBuffer& buffer,
const Vector2f& position, const ColourRect* mod_colours,
const Rectf* clip_rect) const;
size_t getFormattedLineCount() const;
float getHorizontalExtent(const Window* ref_wnd) const;
float getVerticalExtent(const Window* ref_wnd) const;
protected:
//! Delete the current formatters and associated RenderedStrings
void deleteFormatters();
//! type of collection used to track the formatted lines.
typedef std::vector<FormattedRenderedString*
CEGUI_VECTOR_ALLOC(FormattedRenderedString*)> LineList;
//! collection of lines.
LineList d_lines;
};
//! specialised version of format used with Justified text
template <> CEGUIEXPORT
void RenderedStringWordWrapper<JustifiedRenderedString>::format(const Window* ref_wnd,
const Sizef& area_size);
//----------------------------------------------------------------------------//
template <typename T>
RenderedStringWordWrapper<T>::RenderedStringWordWrapper(
const RenderedString& string) :
FormattedRenderedString(string)
{
}
//----------------------------------------------------------------------------//
template <typename T>
RenderedStringWordWrapper<T>::~RenderedStringWordWrapper()
{
deleteFormatters();
}
//----------------------------------------------------------------------------//
template <typename T>
void RenderedStringWordWrapper<T>::format(const Window* ref_wnd,
const Sizef& area_size)
{
deleteFormatters();
RenderedString rstring, lstring;
rstring = *d_renderedString;
float rs_width;
T* frs;
for (size_t line = 0; line < rstring.getLineCount(); ++line)
{
while ((rs_width = rstring.getPixelSize(ref_wnd, line).d_width) > 0)
{
// skip line if no wrapping occurs
if (rs_width <= area_size.d_width)
break;
// split rstring at width into lstring and remaining rstring
rstring.split(ref_wnd, line, area_size.d_width, lstring);
frs = CEGUI_NEW_AO T(*new RenderedString(lstring));
frs->format(ref_wnd, area_size);
d_lines.push_back(frs);
line = 0;
}
}
// last line.
frs = CEGUI_NEW_AO T(*new RenderedString(rstring));
frs->format(ref_wnd, area_size);
d_lines.push_back(frs);
}
//----------------------------------------------------------------------------//
template <typename T>
void RenderedStringWordWrapper<T>::draw(const Window* ref_wnd,
GeometryBuffer& buffer,
const Vector2f& position,
const ColourRect* mod_colours,
const Rectf* clip_rect) const
{
Vector2f line_pos(position);
typename LineList::const_iterator i = d_lines.begin();
for (; i != d_lines.end(); ++i)
{
(*i)->draw(ref_wnd, buffer, line_pos, mod_colours, clip_rect);
line_pos.d_y += (*i)->getVerticalExtent(ref_wnd);
}
}
//----------------------------------------------------------------------------//
template <typename T>
size_t RenderedStringWordWrapper<T>::getFormattedLineCount() const
{
return d_lines.size();
}
//----------------------------------------------------------------------------//
template <typename T>
float RenderedStringWordWrapper<T>::getHorizontalExtent(const Window* ref_wnd) const
{
// TODO: Cache at format time.
float w = 0;
typename LineList::const_iterator i = d_lines.begin();
for (; i != d_lines.end(); ++i)
{
const float cur_width = (*i)->getHorizontalExtent(ref_wnd);
if (cur_width > w)
w = cur_width;
}
return w;
}
//----------------------------------------------------------------------------//
template <typename T>
float RenderedStringWordWrapper<T>::getVerticalExtent(const Window* ref_wnd) const
{
// TODO: Cache at format time.
float h = 0;
typename LineList::const_iterator i = d_lines.begin();
for (; i != d_lines.end(); ++i)
h += (*i)->getVerticalExtent(ref_wnd);
return h;
}
//----------------------------------------------------------------------------//
template <typename T>
void RenderedStringWordWrapper<T>::deleteFormatters()
{
for (size_t i = 0; i < d_lines.size(); ++i)
{
// get the rendered string back from rthe formatter
const RenderedString* rs = &d_lines[i]->getRenderedString();
// delete the formatter
CEGUI_DELETE_AO d_lines[i];
// delete the rendered string.
CEGUI_DELETE_AO rs;
}
d_lines.clear();
}
//----------------------------------------------------------------------------//
} // End of CEGUI namespace section
#endif // end of guard _CEGUIRenderedStringWordWrapper_h_
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