- Your Widget Set For OpenGL

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utextlayout.hpp

/***************************************************************************
    LibUFO - UI For OpenGL
    copyright         : (C) 2001-2005 by Johannes Schmidt
    email             : schmidtjf at users.sourceforge.net
                             -------------------

    file              : include/ufo/text/utextlayout.hpp
    begin             : Sun Mar 20 2005
    $Id: utextlayout.hpp,v 1.1 2005/05/21 15:40:00 schmidtjf Exp $
 ***************************************************************************/

/***************************************************************************
 *  This library is free software; you can redistribute it and/or          *
 * modify it under the terms of the GNU Lesser General Public              *
 * License as published by the Free Software Foundation; either            *
 * version 2.1 of the License, or (at your option) any later version.      *
 *                                                                         *
 * This library is distributed in the hope that it will be useful,         *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU       *
 * Lesser General Public License for more details.                         *
 *                                                                         *
 * You should have received a copy of the GNU Lesser General Public        *
 * License along with this library; if not, write to the Free Software     *
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
 ***************************************************************************/

#ifndef UTEXTLAYOUT_HPP
#define UTEXTLAYOUT_HPP

#include "../uobject.hpp"

#include "../font/ufont.hpp"
#include "../util/urectangle.hpp"

namespace ufo {

class UGraphics;

class UFO_EXPORT UTextLine {
public:
    UTextLine() : start(0), length(0), height(0), pos(), valid(false) {}
    UTextLine(unsigned int offset, unsigned int length, int h, const UPoint & p)
        : start(offset), length(length), height(h), pos(p), valid(true) {}
    unsigned int getOffset() const { return start; }
    unsigned int getLength() const { return length; }
    int getHeight() const { return height; }
    UPoint getPos() const { return pos; }
    bool isValid() const { return valid; }
public:
    unsigned int start;
    unsigned int length;
    int height;
    UPoint pos;
    bool valid;
};

class UFO_EXPORT UTextLayout : public UObject {
    UFO_DECLARE_DYNAMIC_CLASS(UTextLayout)
public:
    UTextLayout();
    void setFont(const UFont & font);
    UFont getFont() const;

    void setText(const char * text, unsigned int length);
    const char * getText();
    unsigned int getLength();

    void setMaximumSize(const UDimension & dim);
    UDimension getPreferredSize(const UDimension & maxSize);

    void render(UGraphics * g, const URectangle & rect, const UPoint & offset = UPoint());
    URectangle modelToView(int offset);
    int viewToModel(const UPoint & pos);

    void layout();

    int getLineCount();
    UTextLine getLine(int i);
    UTextLine getLineForTextPosition(int i);
protected:
    void invalidate();
private:
    const char * m_text;
    unsigned int m_length;
    UFont m_font;
    std::vector<UTextLine> m_lines;
    UDimension m_maxSize;
    bool m_validLayout;
};

} // namespace ufo

#endif // UTEXTLAYOUT_HPP

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