[1] | 1 | #include <graph_displayer_canvas.h>
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[4] | 2 | #include <math.h>
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[1] | 3 |
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| 4 | GraphDisplayerCanvas::GraphDisplayerCanvas(Graph & gr, CoordinatesMap & cm, MapStorage & ms):g(gr),nodesmap(g),edgesmap(g),edgetextmap(g),displayed_graph(*(root()), 0, 0),mapstorage(ms),isbutton(false),active_item(NULL)
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| 5 | {
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| 6 |
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[4] | 7 | //first edges are drawn, to hide joining with nodes later
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| 8 |
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[1] | 9 | for (EdgeIt i(g); i!=INVALID; ++i)
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| 10 | {
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[4] | 11 |
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| 12 | //drawing green lines, coordinates are from cm
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| 13 |
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[1] | 14 | Gnome::Canvas::Points coos;
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| 15 | coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
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| 16 | coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
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| 17 |
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| 18 | edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
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| 19 | *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
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[4] | 20 | edgesmap[i]->property_width_pixels().set_value(10);
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[1] | 21 |
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[4] | 22 | //initializing edge-text as well, to empty string
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| 23 |
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[1] | 24 | double x1, x2, y1, y2;
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| 25 | edgesmap[i]->get_bounds(x1, y1, x2, y2);
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| 26 |
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| 27 | edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
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| 28 | edgetextmap[i]->property_fill_color().set_value("black");
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| 29 | }
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| 30 |
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[4] | 31 | //afterwards nodes come to be drawn
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| 32 |
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[1] | 33 | NodeIt i(g);
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| 34 | int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
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| 35 |
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| 36 | for (; i!=INVALID; ++i)
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| 37 | {
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[4] | 38 | //minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen)
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| 39 |
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[1] | 40 | if(cm[i].x>maxx)maxx=(int)cm[i].x;
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| 41 | if(cm[i].y>maxy)maxy=(int)cm[i].y;
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| 42 | if(cm[i].x<minx)minx=(int)cm[i].x;
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| 43 | if(cm[i].y<miny)miny=(int)cm[i].y;
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| 44 |
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[4] | 45 | //drawing bule nodes, with black line around them
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| 46 |
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[1] | 47 | nodesmap[i]=new Gnome::Canvas::Ellipse(displayed_graph, cm[i].x-20, cm[i].y-20, cm[i].x+20, cm[i].y+20);
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| 48 | *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
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| 49 | *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
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| 50 | (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
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| 51 | }
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| 52 |
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[4] | 53 | //setting zoom to be able to see the whole graph on the canvas
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| 54 |
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[1] | 55 | double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
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| 56 | double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
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| 57 |
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| 58 | set_pixels_per_unit((biggest_x>biggest_y)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
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| 59 | std::cout<<abs(maxx)<<" "<<abs(minx)<<" big x "<<biggest_x<<" "<<abs(maxy)<<" "<<abs(miny)<<" big y "<<biggest_y<<std::endl;
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| 60 | std::cout<<maxx<<" "<<minx<<" big x "<<biggest_x<<" "<<maxy<<" "<<miny<<" big y "<<biggest_y<<std::endl;
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| 61 | std::cout<<"dx "<<(maxx-minx)<<" dy "<<(maxy-miny)<<" xrate "<<((maxx-minx)/WIN_WIDTH)<<" yrate "<<((maxy-miny)/WIN_HEIGHT)<<std::endl;
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| 62 |
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| 63 | }
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| 64 |
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| 65 | GraphDisplayerCanvas::~GraphDisplayerCanvas()
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| 66 | {
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| 67 |
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[4] | 68 | //writing out the end state of the graph
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| 69 | //\todo all the maps has to be write out!
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[1] | 70 |
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[4] | 71 | Graph::NodeMap <int> id(g);
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| 72 | Graph::NodeMap <double> xc(g);
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| 73 | Graph::NodeMap <double> yc(g);
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| 74 |
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| 75 | int j=1;
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| 76 |
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| 77 | for (NodeIt i(g); i!=INVALID; ++i)
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| 78 | {
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| 79 | double x1,y1,x2,y2;
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| 80 | nodesmap[i]->get_bounds(x1, y1, x2, y2);
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| 81 |
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| 82 | id[i]=j++;
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| 83 | xc[i]=(x1+x2)/2;
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| 84 | yc[i]=(y1+y2)/2;
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| 85 | }
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[1] | 86 |
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[4] | 87 | GraphWriter<Graph> writer(std::cout,g);
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| 88 |
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| 89 | writer.writeNodeMap("id", id);
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| 90 | writer.writeNodeMap("coordinates_x", xc);
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| 91 | writer.writeNodeMap("coordinates_y", yc);
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| 92 | writer.run();
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[1] | 93 | }
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| 94 |
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| 95 | int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
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| 96 | {
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| 97 | for (EdgeIt i(g); i!=INVALID; ++i)
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| 98 | {
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| 99 | int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
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| 100 | edgesmap[i]->property_width_pixels().set_value(w);
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| 101 | }
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| 102 | return 0;
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| 103 | };
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| 104 |
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| 105 | int GraphDisplayerCanvas::changeColor (std::string mapname)
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| 106 | {
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[4] | 107 |
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| 108 | //function maps the range of the maximum and
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| 109 | //the minimum of the nodemap to the range of
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| 110 | //green in RGB
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| 111 |
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[1] | 112 | for (EdgeIt i(g); i!=INVALID; ++i)
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| 113 | {
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| 114 | double w=(*(mapstorage.edgemap_storage)[mapname])[i];
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| 115 | double max=mapstorage.maxOfEdgeMap(mapname);
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| 116 | double min=mapstorage.minOfEdgeMap(mapname);
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| 117 |
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| 118 | //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
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| 119 | Gdk::Color color;
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| 120 | if(max!=min)
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| 121 | {
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| 122 | color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
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| 123 | }
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| 124 | else
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| 125 | {
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| 126 | color.set_rgb_p (0, 100, 0);
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| 127 | }
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| 128 |
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| 129 | edgesmap[i]->property_fill_color_gdk().set_value(color);
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| 130 | }
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| 131 | return 0;
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| 132 | };
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| 133 |
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| 134 | int GraphDisplayerCanvas::changeText (std::string mapname)
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| 135 | {
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[4] | 136 |
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| 137 | //the number in the map will be written on the edge
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| 138 | //EXCEPT when the name of the map is Text, because
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| 139 | //in that case empty string will be written, because
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| 140 | //that is the deleter map
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| 141 | //\todo isn't it a bit woodcutter?
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| 142 |
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[1] | 143 | for (EdgeIt i(g); i!=INVALID; ++i)
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| 144 | {
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| 145 | if(mapname!="Text")
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| 146 | {
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| 147 | double number=(*(mapstorage.edgemap_storage)[mapname])[i];
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| 148 | int length=(int)(floor(log(number)/log(10)))+1;
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| 149 | int maxpos=(int)(pow(10,length-1));
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| 150 | int strl=length+1+RANGE;
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| 151 | char * str=new char[strl];
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| 152 | str[length]='.';
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| 153 | str[strl]='\0';
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| 154 |
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| 155 | for(int j=0;j<strl;j++)
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| 156 | {
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| 157 | if(j!=length)
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| 158 | {
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| 159 | int digit=(int)(number/maxpos);
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| 160 | str[j]=(digit+'0');
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| 161 | number-=digit*maxpos;
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| 162 | number*=10;
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| 163 | }
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| 164 | }
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| 165 |
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| 166 | edgetextmap[i]->property_text().set_value(str);
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| 167 | }
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| 168 | else
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| 169 | {
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| 170 | edgetextmap[i]->property_text().set_value("");
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| 171 | }
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| 172 | }
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| 173 | return 0;
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| 174 | };
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| 175 |
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| 176 |
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| 177 | int GraphDisplayerCanvas::rezoom ()
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| 178 | {
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[4] | 179 |
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| 180 | //searches for the minimum and the maximum
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| 181 | //value of the coordinates of the nodes to
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| 182 | //set the pixel rpo unit to a value to be
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| 183 | //able to see the whole graph in the canvas
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| 184 | //\todo does not work properly
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| 185 |
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[1] | 186 | double x1, x2, y1, y2;
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| 187 | int x,y;
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| 188 |
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| 189 | NodeIt i(g);
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| 190 | nodesmap[i]->get_bounds(x1, y1, x2, y2);
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| 191 |
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| 192 | x=(int)((x1+x2)/2);
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| 193 | y=(int)((y1+y2)/2);
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| 194 |
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| 195 | int maxx=0, maxy=0, minx=(int)x, miny=(int)y;
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| 196 |
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| 197 | for (; i!=INVALID; ++i)
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| 198 | {
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| 199 | nodesmap[i]->get_bounds(x1, y1, x2, y2);
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| 200 |
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| 201 | x=(int)((x1+x2)/2);
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| 202 | y=(int)((y1+y2)/2);
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| 203 |
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| 204 | if(x>maxx)maxx=x;
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| 205 | if(y>maxy)maxy=y;
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| 206 | if(x<minx)minx=x;
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| 207 | if(y<miny)miny=y;
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| 208 | }
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| 209 |
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| 210 | double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
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| 211 | double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
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| 212 |
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| 213 | set_pixels_per_unit((biggest_x-WIN_WIDTH>biggest_y-WIN_HEIGHT)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
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| 214 | return 0;
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| 215 | };
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| 216 |
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| 217 |
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| 218 | bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n)
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| 219 | {
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| 220 | switch(e->type)
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| 221 | {
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| 222 | case GDK_BUTTON_PRESS:
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[4] | 223 | //we mark the location of the event to be able to calculate parameters of dragging
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[1] | 224 | clicked_x=e->button.x;
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| 225 | clicked_y=e->button.y;
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| 226 | active_item=(get_item_at(e->button.x, e->button.y));
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| 227 | isbutton=true;
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| 228 | break;
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| 229 | case GDK_BUTTON_RELEASE:
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| 230 | isbutton=false;
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| 231 | active_item=NULL;
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| 232 | break;
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| 233 | case GDK_MOTION_NOTIFY:
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[4] | 234 | //we only have to do sg. if the mouse button is pressed
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[1] | 235 | if(isbutton)
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| 236 | {
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[4] | 237 | //new coordinates will be the old values,
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| 238 | //because the item will be moved to the
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| 239 | //new coordinate therefore the new movement
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| 240 | //has to be calculated from here
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| 241 |
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[1] | 242 | double dx=e->motion.x-clicked_x;
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| 243 | double dy=e->motion.y-clicked_y;
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| 244 | active_item->move(dx, dy);
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| 245 | clicked_x=e->motion.x;
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| 246 | clicked_y=e->motion.y;
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| 247 |
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[4] | 248 | //all the edges connected to the moved point has to be redrawn
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| 249 |
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[1] | 250 | EdgeIt e;
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| 251 | g.firstOut(e,n);
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| 252 | for(;e!=INVALID;g.nextOut(e))
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| 253 | {
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| 254 | Gnome::Canvas::Points coos;
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| 255 | double x1, x2, y1, y2;
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| 256 |
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| 257 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
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| 258 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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| 259 |
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| 260 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
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| 261 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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| 262 |
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| 263 | edgesmap[e]->property_points().set_value(coos);
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| 264 |
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| 265 | edgesmap[e]->get_bounds(x1, y1, x2, y2);
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| 266 |
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| 267 | edgetextmap[e]->property_x().set_value((x1+x2)/2);
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| 268 | edgetextmap[e]->property_y().set_value((y1+y2)/2);
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| 269 | }
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| 270 |
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| 271 | g.firstIn(e,n);
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| 272 | for(;e!=INVALID;g.nextIn(e))
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| 273 | {
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| 274 | Gnome::Canvas::Points coos;
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| 275 | double x1, x2, y1, y2;
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| 276 |
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| 277 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
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| 278 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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| 279 |
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| 280 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
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| 281 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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| 282 |
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| 283 | edgesmap[e]->property_points().set_value(coos);
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| 284 |
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| 285 | edgesmap[e]->get_bounds(x1, y1, x2, y2);
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| 286 |
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| 287 | edgetextmap[e]->property_x().set_value((x1+x2)/2);
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| 288 | edgetextmap[e]->property_y().set_value((y1+y2)/2);
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| 289 | }
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| 290 | }
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| 291 | default: break;
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| 292 | }
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| 293 | return true;
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| 294 | }
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| 295 |
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| 296 | bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
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| 297 | {
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| 298 | Gnome::Canvas::CanvasAA::on_expose_event(event);
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| 299 | //usleep(10000);
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| 300 | //rezoom();
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| 301 | return true;
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| 302 | }
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