root/trunk/FRII/gui/AlignedPairSequenceView.hh

/*
 * This file is part of the FamilyRelations II source distribution.
 *
 * FamilyRelations II is part of the FamilyJewels package for comparative
 * sequence analysis: http://family.caltech.edu/.
 *
 * Contact author: C. Titus Brown, titus@caltech.edu.
 *
 * This program and all associated source code files are Copyright (C) 2003,
 * 2004 the California Institute of Technology, Pasadena, CA, 91125 USA.  It
 * is under the Lesser GNU Public License; please see the included
 * LICENSE.txt file for more information, or contact Titus directly.
 *
 */

// A class to handle display pairwise alignments of DNA sequences.
// Subclass of SequenceView.

#ifndef ALIGNED_PAIR_SEQUENCE_VIEW_HH
#define ALIGNED_PAIR_SEQUENCE_VIEW_HH

#include "SequenceView.hh"
#include <string>

namespace gui {
  class AlignedPairSequenceView : public SequenceView {
  private:
    float ch_width;
  protected:
    std::string _top_aln;
    std::string _bot_aln;

    void draw();
    void draw_labels();
    //void draw_selection_box();

    int handle(int e);

    // font size (in pixels)
    const static unsigned int font_size = 14;

    // border size (in pixels)
    const static unsigned int border = 35;

    // half the size of the text label
    const static unsigned int half_label_height = 5;

    // the width of the text label
    const static unsigned int label_width = border - 2;

    // half the size of the selection box
    const static unsigned int half_selection_height = 10;

    // make sure that the view size is sensible
    void _resize_view(unsigned int& s, unsigned int& e);
  public:
    AlignedPairSequenceView(int _x, int _y, unsigned int _w,
                            std::string top_aln, std::string bot_aln);

    // public access to the height; this must be used by groups,
    // before the sequence is instantiated, which is why it's static.
    const static unsigned int height = 80;

    unsigned int base_to_pos(int base);
    unsigned int pos_to_base(int pos);

    // public access to some of the drawing information
    unsigned int get_left(), get_width(), get_mid();

    // override set_visible_bases to constrain view size first...
    void set_visible_bases(unsigned int start, unsigned int end) {
      _resize_view(start, end);
      SequenceView::set_visible_bases(start, end);
    }

    void resize(int a, int b, int c, int d) {
      SequenceView::resize(a, b, c, d);
      _resize_view(_start, _end);
    }

    void scroll_right(unsigned int n), scroll_left(unsigned int n);
  };
}

#endif // ALIGNED_PAIR_SEQUENCE_VIEW_HH