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 | //set_center_scroll_region(true); |
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7 | |
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8 | //first edges are drawn, to hide joining with nodes later |
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9 | |
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10 | for (EdgeIt i(g); i!=INVALID; ++i) |
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11 | { |
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12 | |
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13 | //drawing green lines, coordinates are from cm |
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14 | |
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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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21 | edgesmap[i]->property_width_pixels().set_value(10); |
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22 | |
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23 | //initializing edge-text as well, to empty string |
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24 | |
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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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32 | //afterwards nodes come to be drawn |
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33 | |
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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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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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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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46 | //drawing bule nodes, with black line around them |
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47 | |
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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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54 | /* |
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55 | //setting zoom to be able to see the whole graph on the canvas |
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56 | |
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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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64 | */ |
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65 | updateScrollRegion(); |
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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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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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73 | |
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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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89 | |
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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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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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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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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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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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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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184 | //we mark the location of the event to be able to calculate parameters of dragging |
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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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195 | //we only have to do sg. if the mouse button is pressed |
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196 | if(isbutton) |
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197 | { |
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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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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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209 | //all the edges connected to the moved point has to be redrawn |
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210 | |
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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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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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