COIN-OR::LEMON - Graph Library

Changeset 1499:9316dcc0a355 in lemon-0.x for gui


Ignore:
Timestamp:
06/16/05 20:08:04 (14 years ago)
Author:
Hegyi Péter
Branch:
default
Phase:
public
Convert:
svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@1980
Message:

Little red arrows appear in breakpoints of edges.

Location:
gui
Files:
4 edited

Legend:

Unmodified
Added
Removed
  • gui/broken_edge.cc

    r1497 r1499  
    11#include <broken_edge.h>
     2#include <lemon/xy.h>
     3#include <math.h>
    24
    3 BrokenEdge::BrokenEdge(Gnome::Canvas::Group & g, Gnome::Canvas::Points p) : Line(g)
     5BrokenEdge::BrokenEdge(Gnome::Canvas::Group & g, Gnome::Canvas::Points p) : Line(g), isbutton(false)
    46{
     7  my_points=new Gnome::Art::Point[3];
     8
     9  arrow=new Gnome::Canvas::Polygon(g);
     10  *arrow << Gnome::Canvas::Properties::fill_color("red");
     11  arrow->signal_event().connect(sigc::mem_fun(*this, &BrokenEdge::edge_former_event_handler));
     12  set_points(p);
     13}
     14
     15BrokenEdge::~BrokenEdge()
     16{
     17  if(arrow)delete(arrow);
     18}
     19
     20void BrokenEdge::set_points(Gnome::Canvas::Points p)
     21{
     22  bool set_arrow=false;
    523  if(p.size()==2)
    624    {
     25      set_arrow=true;
    726      Gnome::Canvas::Points points_with_center;
    8       points_with_center.push_back(p[0]);
    9       points_with_center.push_back(Gnome::Art::Point( (p[0].get_x()+p[1].get_x())/2+30 , (p[0].get_y()+p[1].get_y())/2 )+30 );
    10       points_with_center.push_back(p[1]);
    11      
     27      points_with_center.push_back(my_points[0]=p[0]);
     28      points_with_center.push_back(my_points[1]=Gnome::Art::Point( (p[0].get_x()+p[1].get_x())/2+0 , (p[0].get_y()+p[1].get_y())/2 )+0 );
     29      points_with_center.push_back(my_points[2]=p[1]);
    1230      property_points().set_value(points_with_center);
     31    } 
     32  if(p.size()==3)
     33    {
     34      set_arrow=true;
     35      property_points().set_value(p);
     36      for(int i=0;i<3;i++)
     37        {
     38          my_points[i]=p[i];
     39        }
     40    }
     41
     42  if(set_arrow)
     43    {
     44      //calculating coordinates of the direction indicator arrow
     45
     46      xy<gdouble> target( my_points[2].get_x(), my_points[2].get_y() );
     47      xy<gdouble> center( my_points[1].get_x(), my_points[1].get_y() );
     48
     49      xy<gdouble> unit_vector_in_dir(target-center);
     50      //       std::cout << target << " - " << center << " = " << unit_vector_in_dir << "    / " <<unit_vector_in_dir.normSquare() ;
     51      unit_vector_in_dir/=sqrt( unit_vector_in_dir.normSquare() );
     52      //       std::cout << " = " << unit_vector_in_dir << std::endl;
     53
     54      xy<gdouble> unit_norm_vector(0-unit_vector_in_dir.y, unit_vector_in_dir.x);
     55      //       std::cout << unit_norm_vector << std::endl;
     56
     57      {     
     58        //       /\             top
     59        //      /  \
     60        //      -  -      c(enter)l(eft), ccl, ccr, cr
     61        //       ||
     62        //       ||       b(ottom)l, br
     63      }
     64
     65      double size=3;
     66
     67      xy<gdouble> bl (center - unit_vector_in_dir * 3 * size + unit_norm_vector * size );
     68      xy<gdouble> br (center - unit_vector_in_dir * 3 * size - unit_norm_vector * size );
     69      xy<gdouble> ccl(center + unit_vector_in_dir *  size + unit_norm_vector * size );
     70      xy<gdouble> ccr(center + unit_vector_in_dir *  size - unit_norm_vector * size );
     71      xy<gdouble> cl (center + unit_vector_in_dir *  size + unit_norm_vector * 2 * size );
     72      xy<gdouble> cr (center + unit_vector_in_dir *  size - unit_norm_vector * 2 * size );
     73      xy<gdouble> top(center + unit_vector_in_dir * 3 * size);
     74         
     75      //       std::cout << bl << " " << br << " " << ccl << " "  << ccr << " " << cl << " " << cr << " " << top << std::endl;
     76
     77      Gnome::Canvas::Points arrow_points;
     78      arrow_points.push_back(Gnome::Art::Point( bl.x , bl.y  ) );
     79      arrow_points.push_back(Gnome::Art::Point( br.x , br.y  ) );
     80      arrow_points.push_back(Gnome::Art::Point( ccr.x, ccr.y ) );
     81      arrow_points.push_back(Gnome::Art::Point( cr.x , cr.y  ) );
     82      arrow_points.push_back(Gnome::Art::Point( top.x, top.y ) );
     83      arrow_points.push_back(Gnome::Art::Point( cl.x , cl.y  ) );
     84      arrow_points.push_back(Gnome::Art::Point( ccl.x, ccl.y ) );
     85
     86      arrow->property_points().set_value(arrow_points);
    1387    }
    1488}
     89
     90bool BrokenEdge::edge_former_event_handler(GdkEvent* e)
     91{
     92  switch(e->type)
     93    {
     94    case GDK_BUTTON_PRESS:
     95      //we mark the location of the event to be able to calculate parameters of dragging
     96      clicked_x=e->button.x;
     97      clicked_y=e->button.y;
     98      isbutton=true;
     99      break;
     100    case GDK_BUTTON_RELEASE:
     101      isbutton=false;
     102      break;
     103    case GDK_MOTION_NOTIFY:
     104      //we only have to do sg. if the mouse button is pressed
     105      if(isbutton)
     106        {
     107          //new coordinates will be the old values,
     108          //because the item will be moved to the
     109          //new coordinate therefore the new movement
     110          //has to be calculated from here
     111
     112          double dx=e->motion.x-clicked_x;
     113          double dy=e->motion.y-clicked_y;
     114
     115          Gnome::Canvas::Points points_new;
     116
     117          points_new.push_back(my_points[0]);
     118          points_new.push_back(my_points[1]=Gnome::Art::Point(my_points[1].get_x()+dx,my_points[1].get_y()+dy));
     119          points_new.push_back(my_points[2]);
     120
     121          set_points(points_new);
     122
     123          clicked_x=e->motion.x;
     124          clicked_y=e->motion.y;
     125
     126        }
     127    default: break;
     128    }
     129
     130  return true;
     131}
  • gui/broken_edge.h

    r1497 r1499  
    1010class BrokenEdge : public Gnome::Canvas::Line
    1111{
     12  Gnome::Canvas::Polygon * arrow;
     13  Gnome::Art::Point * my_points;
     14
     15  ///Indicates whether the button of mouse is pressed or not
     16  bool isbutton;
     17
     18  ///At this location was the mousebutton pressed.
     19  ///It helps to calculate the distance of dragging.
     20  double clicked_x, clicked_y;
     21
     22  ///event handler for forming edges
     23  bool edge_former_event_handler(GdkEvent*);
    1224 public:
    1325  BrokenEdge(Gnome::Canvas::Group &, Gnome::Canvas::Points);
     26  ~BrokenEdge();
     27  void set_points(Gnome::Canvas::Points);
    1428};
    1529
  • gui/graph_displayer_canvas.cc

    r1497 r1499  
    2424    coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
    2525   
    26     //edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
    2726    edgesmap[i]=new BrokenEdge(displayed_graph, coos);
    2827    *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
     
    393392            coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
    394393
    395             edgesmap[e]->property_points().set_value(coos);
     394            edgesmap[e]->set_points(coos);
    396395
    397396            edgesmap[e]->get_bounds(x1, y1, x2, y2);
     
    413412            coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
    414413
    415             edgesmap[e]->property_points().set_value(coos);
     414            edgesmap[e]->set_points(coos);
    416415
    417416            edgesmap[e]->get_bounds(x1, y1, x2, y2);
     
    544543
    545544                  //drawing new edge
    546                   edgesmap[active_edge]=new Gnome::Canvas::Line(displayed_graph, coos);
     545                  edgesmap[active_edge]=new BrokenEdge(displayed_graph, coos);
    547546                  *(edgesmap[active_edge]) << Gnome::Canvas::Properties::fill_color("green");
    548547                  edgesmap[active_edge]->property_width_pixels().set_value(10);
  • gui/graph_displayer_canvas.h

    r1496 r1499  
    66#include <all_include.h>
    77#include <mapstorage.h>
     8#include <broken_edge.h>
    89#include <libgnomecanvasmm.h>
    910#include <libgnomecanvasmm/polygon.h>
     
    8485
    8586  ///Map of edges of graph
    86   Graph::EdgeMap<Gnome::Canvas::Line *> edgesmap;
     87  Graph::EdgeMap<BrokenEdge *> edgesmap;
    8788
    8889  ///Map of texts to write on edges
     
    111112
    112113  static const int zoom_step = 5;
     114
    113115};
    114116
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