[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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[5] | 6 | //set_center_scroll_region(true);
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[1] | 7 |
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[4] | 8 | //first edges are drawn, to hide joining with nodes later
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| 9 |
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[1] | 10 | for (EdgeIt i(g); i!=INVALID; ++i)
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| 11 | {
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[4] | 12 |
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| 13 | //drawing green lines, coordinates are from cm
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| 14 |
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[1] | 15 | Gnome::Canvas::Points coos;
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| 16 | coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
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| 17 | coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
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| 18 |
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| 19 | edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
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| 20 | *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
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[4] | 21 | edgesmap[i]->property_width_pixels().set_value(10);
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[1] | 22 |
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[4] | 23 | //initializing edge-text as well, to empty string
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| 24 |
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[1] | 25 | double x1, x2, y1, y2;
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| 26 | edgesmap[i]->get_bounds(x1, y1, x2, y2);
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| 27 |
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| 28 | edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
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| 29 | edgetextmap[i]->property_fill_color().set_value("black");
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| 30 | }
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| 31 |
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[4] | 32 | //afterwards nodes come to be drawn
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| 33 |
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[1] | 34 | NodeIt i(g);
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| 35 | int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
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| 36 |
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| 37 | for (; i!=INVALID; ++i)
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| 38 | {
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[4] | 39 | //minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen)
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| 40 |
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[1] | 41 | if(cm[i].x>maxx)maxx=(int)cm[i].x;
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| 42 | if(cm[i].y>maxy)maxy=(int)cm[i].y;
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| 43 | if(cm[i].x<minx)minx=(int)cm[i].x;
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| 44 | if(cm[i].y<miny)miny=(int)cm[i].y;
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| 45 |
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[4] | 46 | //drawing bule nodes, with black line around them
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| 47 |
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[1] | 48 | 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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| 49 | *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
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| 50 | *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
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| 51 | (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
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| 52 | }
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| 53 |
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[5] | 54 | /*
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[4] | 55 | //setting zoom to be able to see the whole graph on the canvas
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| 56 |
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[1] | 57 | double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
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| 58 | double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
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| 59 |
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| 60 | set_pixels_per_unit((biggest_x>biggest_y)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
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| 61 | std::cout<<abs(maxx)<<" "<<abs(minx)<<" big x "<<biggest_x<<" "<<abs(maxy)<<" "<<abs(miny)<<" big y "<<biggest_y<<std::endl;
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| 62 | std::cout<<maxx<<" "<<minx<<" big x "<<biggest_x<<" "<<maxy<<" "<<miny<<" big y "<<biggest_y<<std::endl;
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| 63 | std::cout<<"dx "<<(maxx-minx)<<" dy "<<(maxy-miny)<<" xrate "<<((maxx-minx)/WIN_WIDTH)<<" yrate "<<((maxy-miny)/WIN_HEIGHT)<<std::endl;
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[5] | 64 | */
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| 65 | updateScrollRegion();
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[1] | 66 | }
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| 67 |
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| 68 | GraphDisplayerCanvas::~GraphDisplayerCanvas()
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| 69 | {
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| 70 |
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[4] | 71 | //writing out the end state of the graph
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| 72 | //\todo all the maps has to be write out!
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[1] | 73 |
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[4] | 74 | Graph::NodeMap <int> id(g);
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| 75 | Graph::NodeMap <double> xc(g);
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| 76 | Graph::NodeMap <double> yc(g);
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| 77 |
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| 78 | int j=1;
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| 79 |
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| 80 | for (NodeIt i(g); i!=INVALID; ++i)
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| 81 | {
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| 82 | double x1,y1,x2,y2;
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| 83 | nodesmap[i]->get_bounds(x1, y1, x2, y2);
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| 84 |
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| 85 | id[i]=j++;
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| 86 | xc[i]=(x1+x2)/2;
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| 87 | yc[i]=(y1+y2)/2;
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| 88 | }
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[1] | 89 |
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[4] | 90 | GraphWriter<Graph> writer(std::cout,g);
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| 91 |
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| 92 | writer.writeNodeMap("id", id);
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| 93 | writer.writeNodeMap("coordinates_x", xc);
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| 94 | writer.writeNodeMap("coordinates_y", yc);
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| 95 | writer.run();
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[1] | 96 | }
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| 97 |
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| 98 | int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
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| 99 | {
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| 100 | for (EdgeIt i(g); i!=INVALID; ++i)
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| 101 | {
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| 102 | int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
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| 103 | edgesmap[i]->property_width_pixels().set_value(w);
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| 104 | }
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| 105 | return 0;
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| 106 | };
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| 107 |
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| 108 | int GraphDisplayerCanvas::changeColor (std::string mapname)
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| 109 | {
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[4] | 110 |
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| 111 | //function maps the range of the maximum and
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| 112 | //the minimum of the nodemap to the range of
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| 113 | //green in RGB
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| 114 |
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[1] | 115 | for (EdgeIt i(g); i!=INVALID; ++i)
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| 116 | {
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| 117 | double w=(*(mapstorage.edgemap_storage)[mapname])[i];
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| 118 | double max=mapstorage.maxOfEdgeMap(mapname);
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| 119 | double min=mapstorage.minOfEdgeMap(mapname);
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| 120 |
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| 121 | //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
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| 122 | Gdk::Color color;
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| 123 | if(max!=min)
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| 124 | {
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| 125 | color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
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| 126 | }
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| 127 | else
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| 128 | {
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| 129 | color.set_rgb_p (0, 100, 0);
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| 130 | }
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| 131 |
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| 132 | edgesmap[i]->property_fill_color_gdk().set_value(color);
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| 133 | }
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| 134 | return 0;
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| 135 | };
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| 136 |
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| 137 | int GraphDisplayerCanvas::changeText (std::string mapname)
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| 138 | {
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[4] | 139 |
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| 140 | //the number in the map will be written on the edge
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| 141 | //EXCEPT when the name of the map is Text, because
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| 142 | //in that case empty string will be written, because
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| 143 | //that is the deleter map
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| 144 | //\todo isn't it a bit woodcutter?
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| 145 |
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[1] | 146 | for (EdgeIt i(g); i!=INVALID; ++i)
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| 147 | {
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| 148 | if(mapname!="Text")
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| 149 | {
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| 150 | double number=(*(mapstorage.edgemap_storage)[mapname])[i];
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| 151 | int length=(int)(floor(log(number)/log(10)))+1;
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| 152 | int maxpos=(int)(pow(10,length-1));
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| 153 | int strl=length+1+RANGE;
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| 154 | char * str=new char[strl];
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| 155 | str[length]='.';
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| 156 | str[strl]='\0';
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| 157 |
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| 158 | for(int j=0;j<strl;j++)
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| 159 | {
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| 160 | if(j!=length)
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| 161 | {
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| 162 | int digit=(int)(number/maxpos);
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| 163 | str[j]=(digit+'0');
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| 164 | number-=digit*maxpos;
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| 165 | number*=10;
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| 166 | }
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| 167 | }
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| 168 |
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| 169 | edgetextmap[i]->property_text().set_value(str);
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| 170 | }
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| 171 | else
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| 172 | {
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| 173 | edgetextmap[i]->property_text().set_value("");
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| 174 | }
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| 175 | }
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| 176 | return 0;
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| 177 | };
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| 178 |
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| 179 | bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n)
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| 180 | {
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| 181 | switch(e->type)
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| 182 | {
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| 183 | case GDK_BUTTON_PRESS:
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[4] | 184 | //we mark the location of the event to be able to calculate parameters of dragging
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[1] | 185 | clicked_x=e->button.x;
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| 186 | clicked_y=e->button.y;
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| 187 | active_item=(get_item_at(e->button.x, e->button.y));
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| 188 | isbutton=true;
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| 189 | break;
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| 190 | case GDK_BUTTON_RELEASE:
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| 191 | isbutton=false;
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| 192 | active_item=NULL;
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| 193 | break;
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| 194 | case GDK_MOTION_NOTIFY:
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[4] | 195 | //we only have to do sg. if the mouse button is pressed
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[1] | 196 | if(isbutton)
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| 197 | {
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[4] | 198 | //new coordinates will be the old values,
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| 199 | //because the item will be moved to the
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| 200 | //new coordinate therefore the new movement
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| 201 | //has to be calculated from here
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| 202 |
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[1] | 203 | double dx=e->motion.x-clicked_x;
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| 204 | double dy=e->motion.y-clicked_y;
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| 205 | active_item->move(dx, dy);
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| 206 | clicked_x=e->motion.x;
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| 207 | clicked_y=e->motion.y;
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| 208 |
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[4] | 209 | //all the edges connected to the moved point has to be redrawn
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| 210 |
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[1] | 211 | EdgeIt e;
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| 212 | g.firstOut(e,n);
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| 213 | for(;e!=INVALID;g.nextOut(e))
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| 214 | {
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| 215 | Gnome::Canvas::Points coos;
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| 216 | double x1, x2, y1, y2;
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| 217 |
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| 218 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
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| 219 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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| 220 |
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| 221 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
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| 222 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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| 223 |
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| 224 | edgesmap[e]->property_points().set_value(coos);
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| 225 |
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| 226 | edgesmap[e]->get_bounds(x1, y1, x2, y2);
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| 227 |
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| 228 | edgetextmap[e]->property_x().set_value((x1+x2)/2);
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| 229 | edgetextmap[e]->property_y().set_value((y1+y2)/2);
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| 230 | }
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| 231 |
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| 232 | g.firstIn(e,n);
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| 233 | for(;e!=INVALID;g.nextIn(e))
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| 234 | {
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| 235 | Gnome::Canvas::Points coos;
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| 236 | double x1, x2, y1, y2;
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| 237 |
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| 238 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
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| 239 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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| 240 |
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| 241 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
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| 242 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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| 243 |
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| 244 | edgesmap[e]->property_points().set_value(coos);
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| 245 |
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| 246 | edgesmap[e]->get_bounds(x1, y1, x2, y2);
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| 247 |
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| 248 | edgetextmap[e]->property_x().set_value((x1+x2)/2);
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| 249 | edgetextmap[e]->property_y().set_value((y1+y2)/2);
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| 250 | }
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| 251 | }
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| 252 | default: break;
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| 253 | }
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| 254 | return true;
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| 255 | }
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| 256 |
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| 257 | bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
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| 258 | {
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| 259 | Gnome::Canvas::CanvasAA::on_expose_event(event);
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| 260 | //usleep(10000);
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| 261 | //rezoom();
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| 262 | return true;
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| 263 | }
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[5] | 264 |
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| 265 | void GraphDisplayerCanvas::zoomIn()
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| 266 | {
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| 267 | set_pixels_per_unit(
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| 268 | (1.0 + (double) zoom_step / 100.0) * get_pixels_per_unit());
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| 269 | }
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| 270 |
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| 271 | void GraphDisplayerCanvas::zoomOut()
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| 272 | {
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| 273 | set_pixels_per_unit(
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| 274 | (1.0 - (double) zoom_step / 100.0) * get_pixels_per_unit());
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| 275 | }
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| 276 |
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| 277 | void GraphDisplayerCanvas::zoomFit()
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| 278 | {
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| 279 | // get the height and width of the canvas
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| 280 | Gtk::Allocation a = get_allocation();
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| 281 | int aw = a.get_width();
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| 282 | int ah = a.get_height();
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| 283 | // add some space
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| 284 | aw -= 5; if (aw < 0) aw = 0;
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| 285 | ah -= 5; if (ah < 0) ah = 0;
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| 286 | //std::cout << "aw=" << aw << " ah=" << ah << std::endl;
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| 287 |
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| 288 | // get the bounding box of the graph
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| 289 | set_pixels_per_unit(1.0); // I don't really understand why this is necessary
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| 290 | double wx1, wy1, wx2, wy2;
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| 291 | double cx1, cy1, cx2, cy2;
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| 292 | Gnome::Canvas::Item* pCanvasItem = root();
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| 293 | pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
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| 294 | //std::cout << "root bounds: " << wx1 << " " << wy1 << " " << wx2 << " " << wy2 << std::endl;
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| 295 | w2c(wx1, wy1, cx1, cy1);
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| 296 | w2c(wx2, wy2, cx2, cy2);
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| 297 | //std::cout << "root bounds (c): " << cx1 << " " << cy1 << " " << cx2 << " " << cy2 << std::endl;
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| 298 | //std::cout << "cx2 - cx1=" << fabs(cx2 - cx1) << " cy2 - cy1=" << fabs(cy2 - cy1) << std::endl;
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| 299 |
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| 300 | // fit the graph to the window
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| 301 | double ppu1 = (double) aw / fabs(cx2 - cx1);
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| 302 | double ppu2 = (double) ah / fabs(cy2 - cy1);
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| 303 | //std::cout << "ppu1=" << ppu1 << " ppu2=" << ppu2 << std::endl;
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| 304 | (ppu1 < ppu2) ? set_pixels_per_unit(ppu1) : set_pixels_per_unit(ppu2);
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| 305 | }
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| 306 |
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| 307 | void GraphDisplayerCanvas::zoom100()
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| 308 | {
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| 309 | set_pixels_per_unit(1.0);
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| 310 | }
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| 311 |
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| 312 | void GraphDisplayerCanvas::updateScrollRegion()
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| 313 | {
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| 314 | double wx1, wy1, wx2, wy2;
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| 315 | int cx1, cy1, cx2, cy2;
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| 316 | Gnome::Canvas::Item* pCanvasItem = root();
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| 317 | pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
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| 318 | w2c(wx1, wy1, cx1, cy1);
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| 319 | w2c(wx2, wy2, cx2, cy2);
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| 320 | set_scroll_region(cx1, cy1, cx2, cy2);
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| 321 | }
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