[6] | 1 | #include <graph_displayer_canvas.h> |
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| 2 | #include <math.h> |
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| 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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[9] | 6 | Gnome::Canvas::Ellipse * origo=new Gnome::Canvas::Ellipse(displayed_graph, 0-20, 0-20, 0+20, 0+20); |
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| 7 | *origo << Gnome::Canvas::Properties::fill_color("black"); |
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| 8 | *origo << Gnome::Canvas::Properties::outline_color("black"); |
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| 9 | |
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| 10 | actual_handler=/*displayed_graph.*/signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_node_event_handler), false); |
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| 11 | |
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[6] | 12 | //set_center_scroll_region(true); |
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| 13 | |
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| 14 | //first edges are drawn, to hide joining with nodes later |
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| 15 | |
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| 16 | for (EdgeIt i(g); i!=INVALID; ++i) |
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| 17 | { |
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| 18 | |
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| 19 | //drawing green lines, coordinates are from cm |
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| 20 | |
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| 21 | Gnome::Canvas::Points coos; |
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| 22 | coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y)); |
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| 23 | coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y)); |
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| 24 | |
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| 25 | edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos); |
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| 26 | *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green"); |
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| 27 | edgesmap[i]->property_width_pixels().set_value(10); |
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| 28 | |
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| 29 | //initializing edge-text as well, to empty string |
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| 30 | |
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| 31 | double x1, x2, y1, y2; |
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| 32 | edgesmap[i]->get_bounds(x1, y1, x2, y2); |
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| 33 | |
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| 34 | edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, ""); |
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| 35 | edgetextmap[i]->property_fill_color().set_value("black"); |
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| 36 | } |
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| 37 | |
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| 38 | //afterwards nodes come to be drawn |
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| 39 | |
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| 40 | NodeIt i(g); |
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| 41 | int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y; |
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| 42 | |
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| 43 | for (; i!=INVALID; ++i) |
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| 44 | { |
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| 45 | //minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen) |
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| 46 | |
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| 47 | if(cm[i].x>maxx)maxx=(int)cm[i].x; |
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| 48 | if(cm[i].y>maxy)maxy=(int)cm[i].y; |
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| 49 | if(cm[i].x<minx)minx=(int)cm[i].x; |
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| 50 | if(cm[i].y<miny)miny=(int)cm[i].y; |
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| 51 | |
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| 52 | //drawing bule nodes, with black line around them |
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| 53 | |
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| 54 | 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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| 55 | *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue"); |
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| 56 | *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black"); |
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[9] | 57 | //!!!!!!! (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i)); |
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[6] | 58 | } |
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| 59 | |
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| 60 | updateScrollRegion(); |
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| 61 | } |
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| 62 | |
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| 63 | GraphDisplayerCanvas::~GraphDisplayerCanvas() |
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| 64 | { |
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| 65 | |
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| 66 | //writing out the end state of the graph |
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| 67 | //\todo all the maps has to be write out! |
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| 68 | |
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| 69 | Graph::NodeMap <int> id(g); |
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| 70 | Graph::NodeMap <double> xc(g); |
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| 71 | Graph::NodeMap <double> yc(g); |
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| 72 | |
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| 73 | int j=1; |
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| 74 | |
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| 75 | for (NodeIt i(g); i!=INVALID; ++i) |
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| 76 | { |
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| 77 | double x1,y1,x2,y2; |
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| 78 | nodesmap[i]->get_bounds(x1, y1, x2, y2); |
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| 79 | |
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| 80 | id[i]=j++; |
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| 81 | xc[i]=(x1+x2)/2; |
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| 82 | yc[i]=(y1+y2)/2; |
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| 83 | } |
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| 84 | |
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| 85 | GraphWriter<Graph> writer(std::cout,g); |
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| 86 | |
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| 87 | writer.writeNodeMap("id", id); |
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| 88 | writer.writeNodeMap("coordinates_x", xc); |
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| 89 | writer.writeNodeMap("coordinates_y", yc); |
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| 90 | writer.run(); |
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| 91 | } |
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| 92 | |
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| 93 | int GraphDisplayerCanvas::changeLineWidth (std::string mapname) |
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| 94 | { |
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| 95 | for (EdgeIt i(g); i!=INVALID; ++i) |
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| 96 | { |
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| 97 | int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i]; |
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| 98 | edgesmap[i]->property_width_pixels().set_value(w); |
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| 99 | } |
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| 100 | return 0; |
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| 101 | }; |
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| 102 | |
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| 103 | int GraphDisplayerCanvas::changeColor (std::string mapname) |
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| 104 | { |
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| 105 | |
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| 106 | //function maps the range of the maximum and |
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| 107 | //the minimum of the nodemap to the range of |
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| 108 | //green in RGB |
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| 109 | |
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| 110 | for (EdgeIt i(g); i!=INVALID; ++i) |
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| 111 | { |
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| 112 | double w=(*(mapstorage.edgemap_storage)[mapname])[i]; |
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| 113 | double max=mapstorage.maxOfEdgeMap(mapname); |
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| 114 | double min=mapstorage.minOfEdgeMap(mapname); |
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| 115 | |
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| 116 | //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl; |
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| 117 | Gdk::Color color; |
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| 118 | if(max!=min) |
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| 119 | { |
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| 120 | color.set_rgb_p (0, 100*(w-min)/(max-min), 0); |
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| 121 | } |
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| 122 | else |
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| 123 | { |
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| 124 | color.set_rgb_p (0, 100, 0); |
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| 125 | } |
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| 126 | |
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| 127 | edgesmap[i]->property_fill_color_gdk().set_value(color); |
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| 128 | } |
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| 129 | return 0; |
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| 130 | }; |
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| 131 | |
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| 132 | int GraphDisplayerCanvas::changeText (std::string mapname) |
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| 133 | { |
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| 134 | |
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| 135 | //the number in the map will be written on the edge |
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| 136 | //EXCEPT when the name of the map is Text, because |
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| 137 | //in that case empty string will be written, because |
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| 138 | //that is the deleter map |
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| 139 | //\todo isn't it a bit woodcutter? |
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| 140 | |
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| 141 | for (EdgeIt i(g); i!=INVALID; ++i) |
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| 142 | { |
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| 143 | if(mapname!="Text") |
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| 144 | { |
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| 145 | double number=(*(mapstorage.edgemap_storage)[mapname])[i]; |
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| 146 | int length=(int)(floor(log(number)/log(10)))+1; |
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| 147 | int maxpos=(int)(pow(10,length-1)); |
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| 148 | int strl=length+1+RANGE; |
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| 149 | char * str=new char[strl]; |
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| 150 | str[length]='.'; |
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| 151 | str[strl]='\0'; |
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| 152 | |
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| 153 | for(int j=0;j<strl;j++) |
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| 154 | { |
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| 155 | if(j!=length) |
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| 156 | { |
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| 157 | int digit=(int)(number/maxpos); |
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| 158 | str[j]=(digit+'0'); |
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| 159 | number-=digit*maxpos; |
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| 160 | number*=10; |
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| 161 | } |
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| 162 | } |
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| 163 | |
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| 164 | edgetextmap[i]->property_text().set_value(str); |
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| 165 | } |
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| 166 | else |
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| 167 | { |
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| 168 | edgetextmap[i]->property_text().set_value(""); |
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| 169 | } |
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| 170 | } |
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| 171 | return 0; |
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| 172 | }; |
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| 173 | |
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| 174 | bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n) |
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| 175 | { |
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| 176 | switch(e->type) |
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| 177 | { |
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| 178 | case GDK_BUTTON_PRESS: |
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| 179 | //we mark the location of the event to be able to calculate parameters of dragging |
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| 180 | clicked_x=e->button.x; |
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| 181 | clicked_y=e->button.y; |
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| 182 | active_item=(get_item_at(e->button.x, e->button.y)); |
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| 183 | isbutton=true; |
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| 184 | break; |
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| 185 | case GDK_BUTTON_RELEASE: |
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| 186 | isbutton=false; |
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| 187 | active_item=NULL; |
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[7] | 188 | updateScrollRegion(); |
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[6] | 189 | break; |
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| 190 | case GDK_MOTION_NOTIFY: |
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| 191 | //we only have to do sg. if the mouse button is pressed |
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| 192 | if(isbutton) |
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| 193 | { |
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| 194 | //new coordinates will be the old values, |
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| 195 | //because the item will be moved to the |
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| 196 | //new coordinate therefore the new movement |
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| 197 | //has to be calculated from here |
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| 198 | |
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| 199 | double dx=e->motion.x-clicked_x; |
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| 200 | double dy=e->motion.y-clicked_y; |
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| 201 | active_item->move(dx, dy); |
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| 202 | clicked_x=e->motion.x; |
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| 203 | clicked_y=e->motion.y; |
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| 204 | |
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| 205 | //all the edges connected to the moved point has to be redrawn |
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| 206 | |
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| 207 | EdgeIt e; |
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| 208 | g.firstOut(e,n); |
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| 209 | for(;e!=INVALID;g.nextOut(e)) |
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| 210 | { |
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| 211 | Gnome::Canvas::Points coos; |
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| 212 | double x1, x2, y1, y2; |
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| 213 | |
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| 214 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2); |
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| 215 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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| 216 | |
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| 217 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2); |
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| 218 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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| 219 | |
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| 220 | edgesmap[e]->property_points().set_value(coos); |
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| 221 | |
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| 222 | edgesmap[e]->get_bounds(x1, y1, x2, y2); |
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| 223 | |
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| 224 | edgetextmap[e]->property_x().set_value((x1+x2)/2); |
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| 225 | edgetextmap[e]->property_y().set_value((y1+y2)/2); |
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| 226 | } |
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| 227 | |
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| 228 | g.firstIn(e,n); |
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| 229 | for(;e!=INVALID;g.nextIn(e)) |
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| 230 | { |
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| 231 | Gnome::Canvas::Points coos; |
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| 232 | double x1, x2, y1, y2; |
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| 233 | |
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| 234 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2); |
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| 235 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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| 236 | |
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| 237 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2); |
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| 238 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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| 239 | |
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| 240 | edgesmap[e]->property_points().set_value(coos); |
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| 241 | |
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| 242 | edgesmap[e]->get_bounds(x1, y1, x2, y2); |
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| 243 | |
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| 244 | edgetextmap[e]->property_x().set_value((x1+x2)/2); |
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| 245 | edgetextmap[e]->property_y().set_value((y1+y2)/2); |
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| 246 | } |
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| 247 | } |
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| 248 | default: break; |
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| 249 | } |
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| 250 | return true; |
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| 251 | } |
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| 252 | |
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| 253 | bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event) |
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| 254 | { |
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| 255 | Gnome::Canvas::CanvasAA::on_expose_event(event); |
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| 256 | //usleep(10000); |
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| 257 | //rezoom(); |
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| 258 | return true; |
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| 259 | } |
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| 260 | |
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| 261 | void GraphDisplayerCanvas::zoomIn() |
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| 262 | { |
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| 263 | set_pixels_per_unit( |
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| 264 | (1.0 + (double) zoom_step / 100.0) * get_pixels_per_unit()); |
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| 265 | } |
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| 266 | |
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| 267 | void GraphDisplayerCanvas::zoomOut() |
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| 268 | { |
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| 269 | set_pixels_per_unit( |
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| 270 | (1.0 - (double) zoom_step / 100.0) * get_pixels_per_unit()); |
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| 271 | } |
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| 272 | |
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| 273 | void GraphDisplayerCanvas::zoomFit() |
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| 274 | { |
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| 275 | // get the height and width of the canvas |
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| 276 | Gtk::Allocation a = get_allocation(); |
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| 277 | int aw = a.get_width(); |
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| 278 | int ah = a.get_height(); |
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| 279 | // add some space |
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| 280 | aw -= 5; if (aw < 0) aw = 0; |
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| 281 | ah -= 5; if (ah < 0) ah = 0; |
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| 282 | |
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| 283 | // get the bounding box of the graph |
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| 284 | double wx1, wy1, wx2, wy2; |
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| 285 | Gnome::Canvas::Item* pCanvasItem = root(); |
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| 286 | pCanvasItem->get_bounds(wx1, wy1, wx2, wy2); |
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| 287 | |
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| 288 | // fit the graph to the window |
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[7] | 289 | double ppu1 = (double) aw / fabs(wx2 - wx1); |
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| 290 | double ppu2 = (double) ah / fabs(wy2 - wy1); |
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| 291 | set_pixels_per_unit((ppu1 < ppu2) ? ppu1 : ppu2); |
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[6] | 292 | } |
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| 293 | |
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| 294 | void GraphDisplayerCanvas::zoom100() |
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| 295 | { |
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| 296 | set_pixels_per_unit(1.0); |
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| 297 | } |
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| 298 | |
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| 299 | void GraphDisplayerCanvas::updateScrollRegion() |
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| 300 | { |
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| 301 | double wx1, wy1, wx2, wy2; |
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| 302 | Gnome::Canvas::Item* pCanvasItem = root(); |
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| 303 | pCanvasItem->get_bounds(wx1, wy1, wx2, wy2); |
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[7] | 304 | set_scroll_region(wx1, wy1, wx2, wy2); |
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[6] | 305 | } |
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[9] | 306 | |
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| 307 | void GraphDisplayerCanvas::changeEditorialTool(int newtool) |
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| 308 | { |
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| 309 | actual_handler.disconnect(); |
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| 310 | |
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| 311 | switch(newtool) |
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| 312 | { |
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| 313 | case MOVE: |
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| 314 | actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::move_event_handler), false); |
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| 315 | break; |
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| 316 | case CREATE_NODE: |
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| 317 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_node_event_handler), false); |
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| 318 | break; |
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| 319 | case CREATE_EDGE: |
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| 320 | actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_edge_event_handler), false); |
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| 321 | break; |
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| 322 | default: |
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| 323 | break; |
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| 324 | } |
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| 325 | } |
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| 326 | |
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| 327 | bool GraphDisplayerCanvas::move_event_handler(GdkEvent* e) |
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| 328 | { |
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| 329 | switch(e->type) |
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| 330 | { |
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| 331 | case GDK_BUTTON_PRESS: |
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| 332 | //we mark the location of the event to be able to calculate parameters of dragging |
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| 333 | clicked_x=e->button.x; |
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| 334 | clicked_y=e->button.y; |
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| 335 | active_item=(get_item_at(e->button.x, e->button.y)); |
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| 336 | active_node=INVALID; |
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| 337 | for (NodeIt i(g); i!=INVALID; ++i) |
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| 338 | { |
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| 339 | if(nodesmap[i]==active_item) |
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| 340 | { |
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| 341 | active_node=i; |
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| 342 | } |
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| 343 | } |
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| 344 | isbutton=true; |
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| 345 | break; |
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| 346 | case GDK_BUTTON_RELEASE: |
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| 347 | isbutton=false; |
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| 348 | active_item=NULL; |
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| 349 | updateScrollRegion(); |
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| 350 | break; |
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| 351 | case GDK_MOTION_NOTIFY: |
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| 352 | //we only have to do sg. if the mouse button is pressed |
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| 353 | if(isbutton) |
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| 354 | { |
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| 355 | //new coordinates will be the old values, |
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| 356 | //because the item will be moved to the |
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| 357 | //new coordinate therefore the new movement |
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| 358 | //has to be calculated from here |
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| 359 | |
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| 360 | double dx=e->motion.x-clicked_x; |
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| 361 | double dy=e->motion.y-clicked_y; |
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| 362 | |
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| 363 | active_item->move(dx, dy); |
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| 364 | |
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| 365 | clicked_x=e->motion.x; |
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| 366 | clicked_y=e->motion.y; |
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| 367 | |
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| 368 | //all the edges connected to the moved point has to be redrawn |
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| 369 | |
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| 370 | EdgeIt e; |
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| 371 | |
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| 372 | g.firstOut(e,active_node); |
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| 373 | |
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| 374 | for(;e!=INVALID;g.nextOut(e)) |
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| 375 | { |
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| 376 | Gnome::Canvas::Points coos; |
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| 377 | double x1, x2, y1, y2; |
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| 378 | |
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| 379 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2); |
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| 380 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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| 381 | |
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| 382 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2); |
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| 383 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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| 384 | |
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| 385 | edgesmap[e]->property_points().set_value(coos); |
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| 386 | |
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| 387 | edgesmap[e]->get_bounds(x1, y1, x2, y2); |
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| 388 | |
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| 389 | edgetextmap[e]->property_x().set_value((x1+x2)/2); |
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| 390 | edgetextmap[e]->property_y().set_value((y1+y2)/2); |
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| 391 | } |
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| 392 | |
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| 393 | g.firstIn(e,active_node); |
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| 394 | for(;e!=INVALID;g.nextIn(e)) |
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| 395 | { |
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| 396 | Gnome::Canvas::Points coos; |
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| 397 | double x1, x2, y1, y2; |
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| 398 | |
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| 399 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2); |
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| 400 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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| 401 | |
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| 402 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2); |
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| 403 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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| 404 | |
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| 405 | edgesmap[e]->property_points().set_value(coos); |
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| 406 | |
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| 407 | edgesmap[e]->get_bounds(x1, y1, x2, y2); |
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| 408 | |
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| 409 | edgetextmap[e]->property_x().set_value((x1+x2)/2); |
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| 410 | edgetextmap[e]->property_y().set_value((y1+y2)/2); |
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| 411 | } |
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| 412 | } |
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| 413 | default: break; |
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| 414 | } |
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| 415 | |
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| 416 | return true; |
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| 417 | } |
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| 418 | |
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| 419 | bool GraphDisplayerCanvas::create_node_event_handler(GdkEvent* e) |
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| 420 | { |
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| 421 | switch(e->type) |
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| 422 | { |
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| 423 | case GDK_BUTTON_PRESS: |
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| 424 | isbutton=true; |
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| 425 | |
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| 426 | active_node=NodeIt(g,g.addNode()); |
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| 427 | |
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| 428 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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| 429 | |
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| 430 | nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph, clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20); |
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| 431 | active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]); |
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| 432 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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| 433 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::outline_color("black"); |
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| 434 | (nodesmap[active_node])->show(); |
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| 435 | break; |
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| 436 | case GDK_MOTION_NOTIFY: |
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| 437 | { |
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| 438 | double world_motion_x, world_motion_y; |
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| 439 | GdkEvent * generated=new GdkEvent(); |
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| 440 | window_to_world (e->motion.x, e->motion.y, world_motion_x, world_motion_y); |
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| 441 | generated->motion.x=world_motion_x; |
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| 442 | generated->motion.y=world_motion_y; |
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| 443 | generated->type=GDK_MOTION_NOTIFY; |
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| 444 | move_event_handler(generated); |
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| 445 | break; |
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| 446 | } |
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| 447 | case GDK_BUTTON_RELEASE: |
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| 448 | isbutton=false; |
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| 449 | *active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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| 450 | active_item=NULL; |
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| 451 | updateScrollRegion(); |
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| 452 | break; |
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| 453 | default: |
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| 454 | break; |
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| 455 | } |
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| 456 | return false; |
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| 457 | } |
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| 458 | |
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| 459 | bool GraphDisplayerCanvas::create_edge_event_handler(GdkEvent* e) |
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| 460 | { |
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| 461 | e=e; |
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| 462 | return false; |
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| 463 | } |
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| 464 | |
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