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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6 |
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7 | //first edges are drawn, to hide joining with nodes later
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8 |
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9 | for (EdgeIt i(g); i!=INVALID; ++i)
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10 | {
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11 |
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12 | //drawing green lines, coordinates are from cm
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13 |
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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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20 | edgesmap[i]->property_width_pixels().set_value(10);
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21 |
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22 | //initializing edge-text as well, to empty string
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23 |
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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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31 | //afterwards nodes come to be drawn
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32 |
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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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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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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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45 | //drawing bule nodes, with black line around them
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46 |
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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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53 | //setting zoom to be able to see the whole graph on the canvas
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54 |
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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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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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70 |
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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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86 |
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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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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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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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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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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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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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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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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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223 | //we mark the location of the event to be able to calculate parameters of dragging
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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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234 | //we only have to do sg. if the mouse button is pressed
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235 | if(isbutton)
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236 | {
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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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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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248 | //all the edges connected to the moved point has to be redrawn
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249 |
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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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