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),target_item(NULL) |
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5 | { |
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6 | |
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7 | actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_edge_event_handler), false); |
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8 | |
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9 | //set_center_scroll_region(true); |
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10 | |
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11 | //first edges are drawn, to hide joining with nodes later |
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12 | |
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13 | for (EdgeIt i(g); i!=INVALID; ++i) |
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14 | { |
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15 | |
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16 | //drawing green lines, coordinates are from cm |
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17 | |
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18 | Gnome::Canvas::Points coos; |
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19 | coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y)); |
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20 | coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y)); |
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21 | |
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22 | edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos); |
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23 | *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green"); |
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24 | edgesmap[i]->property_width_pixels().set_value(10); |
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25 | |
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26 | //initializing edge-text as well, to empty string |
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27 | |
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28 | double x1, x2, y1, y2; |
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29 | edgesmap[i]->get_bounds(x1, y1, x2, y2); |
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30 | |
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31 | edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, ""); |
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32 | edgetextmap[i]->property_fill_color().set_value("black"); |
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33 | } |
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34 | |
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35 | //afterwards nodes come to be drawn |
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36 | |
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37 | NodeIt i(g); |
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38 | int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y; |
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39 | |
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40 | for (; i!=INVALID; ++i) |
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41 | { |
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42 | //minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen) |
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43 | |
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44 | if(cm[i].x>maxx)maxx=(int)cm[i].x; |
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45 | if(cm[i].y>maxy)maxy=(int)cm[i].y; |
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46 | if(cm[i].x<minx)minx=(int)cm[i].x; |
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47 | if(cm[i].y<miny)miny=(int)cm[i].y; |
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48 | |
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49 | //drawing bule nodes, with black line around them |
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50 | |
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51 | 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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52 | *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue"); |
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53 | *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black"); |
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54 | //!!!!!!! (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i)); |
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55 | } |
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56 | |
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57 | updateScrollRegion(); |
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58 | } |
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59 | |
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60 | GraphDisplayerCanvas::~GraphDisplayerCanvas() |
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61 | { |
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62 | |
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63 | //writing out the end state of the graph |
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64 | //\todo all the maps has to be write out! |
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65 | |
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66 | Graph::NodeMap <int> id(g); |
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67 | Graph::NodeMap <double> xc(g); |
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68 | Graph::NodeMap <double> yc(g); |
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69 | |
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70 | int j=1; |
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71 | |
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72 | for (NodeIt i(g); i!=INVALID; ++i) |
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73 | { |
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74 | double x1,y1,x2,y2; |
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75 | nodesmap[i]->get_bounds(x1, y1, x2, y2); |
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76 | |
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77 | id[i]=j++; |
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78 | xc[i]=(x1+x2)/2; |
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79 | yc[i]=(y1+y2)/2; |
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80 | } |
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81 | |
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82 | GraphWriter<Graph> writer(std::cout,g); |
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83 | |
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84 | writer.writeNodeMap("id", id); |
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85 | writer.writeNodeMap("coordinates_x", xc); |
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86 | writer.writeNodeMap("coordinates_y", yc); |
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87 | writer.run(); |
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88 | } |
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89 | |
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90 | int GraphDisplayerCanvas::changeLineWidth (std::string mapname) |
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91 | { |
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92 | for (EdgeIt i(g); i!=INVALID; ++i) |
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93 | { |
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94 | int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i]; |
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95 | edgesmap[i]->property_width_pixels().set_value(w); |
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96 | } |
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97 | return 0; |
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98 | }; |
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99 | |
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100 | int GraphDisplayerCanvas::changeColor (std::string mapname) |
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101 | { |
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102 | |
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103 | //function maps the range of the maximum and |
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104 | //the minimum of the nodemap to the range of |
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105 | //green in RGB |
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106 | |
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107 | for (EdgeIt i(g); i!=INVALID; ++i) |
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108 | { |
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109 | double w=(*(mapstorage.edgemap_storage)[mapname])[i]; |
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110 | double max=mapstorage.maxOfEdgeMap(mapname); |
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111 | double min=mapstorage.minOfEdgeMap(mapname); |
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112 | |
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113 | //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl; |
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114 | Gdk::Color color; |
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115 | if(max!=min) |
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116 | { |
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117 | color.set_rgb_p (0, 100*(w-min)/(max-min), 0); |
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118 | } |
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119 | else |
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120 | { |
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121 | color.set_rgb_p (0, 100, 0); |
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122 | } |
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123 | |
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124 | edgesmap[i]->property_fill_color_gdk().set_value(color); |
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125 | } |
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126 | return 0; |
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127 | }; |
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128 | |
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129 | int GraphDisplayerCanvas::changeText (std::string mapname) |
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130 | { |
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131 | |
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132 | //the number in the map will be written on the edge |
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133 | //EXCEPT when the name of the map is Text, because |
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134 | //in that case empty string will be written, because |
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135 | //that is the deleter map |
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136 | //\todo isn't it a bit woodcutter? |
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137 | |
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138 | for (EdgeIt i(g); i!=INVALID; ++i) |
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139 | { |
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140 | if(mapname!="Text") |
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141 | { |
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142 | double number=(*(mapstorage.edgemap_storage)[mapname])[i]; |
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143 | int length=(int)(floor(log(number)/log(10)))+1; |
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144 | int maxpos=(int)(pow(10,length-1)); |
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145 | int strl=length+1+RANGE; |
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146 | char * str=new char[strl]; |
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147 | str[length]='.'; |
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148 | str[strl]='\0'; |
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149 | |
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150 | for(int j=0;j<strl;j++) |
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151 | { |
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152 | if(j!=length) |
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153 | { |
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154 | int digit=(int)(number/maxpos); |
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155 | str[j]=(digit+'0'); |
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156 | number-=digit*maxpos; |
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157 | number*=10; |
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158 | } |
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159 | } |
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160 | |
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161 | edgetextmap[i]->property_text().set_value(str); |
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162 | } |
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163 | else |
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164 | { |
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165 | edgetextmap[i]->property_text().set_value(""); |
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166 | } |
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167 | } |
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168 | return 0; |
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169 | }; |
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170 | |
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171 | bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n) |
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172 | { |
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173 | switch(e->type) |
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174 | { |
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175 | case GDK_BUTTON_PRESS: |
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176 | //we mark the location of the event to be able to calculate parameters of dragging |
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177 | clicked_x=e->button.x; |
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178 | clicked_y=e->button.y; |
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179 | active_item=(get_item_at(e->button.x, e->button.y)); |
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180 | isbutton=true; |
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181 | break; |
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182 | case GDK_BUTTON_RELEASE: |
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183 | isbutton=false; |
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184 | active_item=NULL; |
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185 | updateScrollRegion(); |
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186 | break; |
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187 | case GDK_MOTION_NOTIFY: |
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188 | //we only have to do sg. if the mouse button is pressed |
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189 | if(isbutton) |
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190 | { |
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191 | //new coordinates will be the old values, |
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192 | //because the item will be moved to the |
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193 | //new coordinate therefore the new movement |
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194 | //has to be calculated from here |
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195 | |
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196 | double dx=e->motion.x-clicked_x; |
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197 | double dy=e->motion.y-clicked_y; |
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198 | active_item->move(dx, dy); |
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199 | clicked_x=e->motion.x; |
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200 | clicked_y=e->motion.y; |
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201 | |
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202 | //all the edges connected to the moved point has to be redrawn |
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203 | |
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204 | EdgeIt e; |
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205 | g.firstOut(e,n); |
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206 | for(;e!=INVALID;g.nextOut(e)) |
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207 | { |
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208 | Gnome::Canvas::Points coos; |
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209 | double x1, x2, y1, y2; |
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210 | |
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211 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2); |
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212 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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213 | |
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214 | nodesmap[g.target(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 | edgesmap[e]->property_points().set_value(coos); |
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218 | |
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219 | edgesmap[e]->get_bounds(x1, y1, x2, y2); |
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220 | |
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221 | edgetextmap[e]->property_x().set_value((x1+x2)/2); |
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222 | edgetextmap[e]->property_y().set_value((y1+y2)/2); |
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223 | } |
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224 | |
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225 | g.firstIn(e,n); |
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226 | for(;e!=INVALID;g.nextIn(e)) |
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227 | { |
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228 | Gnome::Canvas::Points coos; |
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229 | double x1, x2, y1, y2; |
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230 | |
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231 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2); |
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232 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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233 | |
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234 | nodesmap[g.target(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 | edgesmap[e]->property_points().set_value(coos); |
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238 | |
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239 | edgesmap[e]->get_bounds(x1, y1, x2, y2); |
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240 | |
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241 | edgetextmap[e]->property_x().set_value((x1+x2)/2); |
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242 | edgetextmap[e]->property_y().set_value((y1+y2)/2); |
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243 | } |
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244 | } |
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245 | default: break; |
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246 | } |
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247 | return true; |
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248 | } |
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249 | |
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250 | bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event) |
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251 | { |
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252 | Gnome::Canvas::CanvasAA::on_expose_event(event); |
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253 | //usleep(10000); |
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254 | //rezoom(); |
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255 | return true; |
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256 | } |
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257 | |
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258 | void GraphDisplayerCanvas::zoomIn() |
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259 | { |
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260 | set_pixels_per_unit( |
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261 | (1.0 + (double) zoom_step / 100.0) * get_pixels_per_unit()); |
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262 | } |
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263 | |
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264 | void GraphDisplayerCanvas::zoomOut() |
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265 | { |
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266 | set_pixels_per_unit( |
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267 | (1.0 - (double) zoom_step / 100.0) * get_pixels_per_unit()); |
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268 | } |
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269 | |
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270 | void GraphDisplayerCanvas::zoomFit() |
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271 | { |
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272 | // get the height and width of the canvas |
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273 | Gtk::Allocation a = get_allocation(); |
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274 | int aw = a.get_width(); |
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275 | int ah = a.get_height(); |
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276 | // add some space |
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277 | aw -= 5; if (aw < 0) aw = 0; |
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278 | ah -= 5; if (ah < 0) ah = 0; |
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279 | |
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280 | // get the bounding box of the graph |
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281 | double wx1, wy1, wx2, wy2; |
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282 | Gnome::Canvas::Item* pCanvasItem = root(); |
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283 | pCanvasItem->get_bounds(wx1, wy1, wx2, wy2); |
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284 | |
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285 | // fit the graph to the window |
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286 | double ppu1 = (double) aw / fabs(wx2 - wx1); |
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287 | double ppu2 = (double) ah / fabs(wy2 - wy1); |
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288 | set_pixels_per_unit((ppu1 < ppu2) ? ppu1 : ppu2); |
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289 | } |
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290 | |
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291 | void GraphDisplayerCanvas::zoom100() |
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292 | { |
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293 | set_pixels_per_unit(1.0); |
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294 | } |
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295 | |
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296 | void GraphDisplayerCanvas::updateScrollRegion() |
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297 | { |
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298 | double wx1, wy1, wx2, wy2; |
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299 | Gnome::Canvas::Item* pCanvasItem = root(); |
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300 | pCanvasItem->get_bounds(wx1, wy1, wx2, wy2); |
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301 | set_scroll_region(wx1, wy1, wx2, wy2); |
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302 | } |
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303 | |
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304 | void GraphDisplayerCanvas::changeEditorialTool(int newtool) |
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305 | { |
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306 | actual_handler.disconnect(); |
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307 | |
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308 | switch(newtool) |
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309 | { |
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310 | case MOVE: |
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311 | actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::move_event_handler), false); |
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312 | break; |
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313 | case CREATE_NODE: |
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314 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_node_event_handler), false); |
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315 | break; |
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316 | case CREATE_EDGE: |
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317 | actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_edge_event_handler), false); |
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318 | break; |
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319 | default: |
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320 | break; |
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321 | } |
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322 | } |
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323 | |
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324 | bool GraphDisplayerCanvas::move_event_handler(GdkEvent* e) |
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325 | { |
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326 | switch(e->type) |
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327 | { |
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328 | case GDK_BUTTON_PRESS: |
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329 | //we mark the location of the event to be able to calculate parameters of dragging |
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330 | clicked_x=e->button.x; |
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331 | clicked_y=e->button.y; |
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332 | active_item=(get_item_at(e->button.x, e->button.y)); |
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333 | active_node=INVALID; |
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334 | for (NodeIt i(g); i!=INVALID; ++i) |
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335 | { |
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336 | if(nodesmap[i]==active_item) |
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337 | { |
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338 | active_node=i; |
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339 | } |
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340 | } |
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341 | isbutton=true; |
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342 | break; |
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343 | case GDK_BUTTON_RELEASE: |
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344 | isbutton=false; |
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345 | active_item=NULL; |
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346 | updateScrollRegion(); |
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347 | break; |
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348 | case GDK_MOTION_NOTIFY: |
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349 | //we only have to do sg. if the mouse button is pressed |
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350 | if(isbutton) |
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351 | { |
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352 | //new coordinates will be the old values, |
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353 | //because the item will be moved to the |
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354 | //new coordinate therefore the new movement |
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355 | //has to be calculated from here |
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356 | |
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357 | double dx=e->motion.x-clicked_x; |
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358 | double dy=e->motion.y-clicked_y; |
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359 | |
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360 | active_item->move(dx, dy); |
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361 | |
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362 | clicked_x=e->motion.x; |
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363 | clicked_y=e->motion.y; |
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364 | |
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365 | //all the edges connected to the moved point has to be redrawn |
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366 | EdgeIt e; |
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367 | |
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368 | g.firstOut(e,active_node); |
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369 | |
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370 | for(;e!=INVALID;g.nextOut(e)) |
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371 | { |
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372 | Gnome::Canvas::Points coos; |
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373 | double x1, x2, y1, y2; |
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374 | |
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375 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2); |
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376 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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377 | |
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378 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2); |
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379 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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380 | |
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381 | edgesmap[e]->property_points().set_value(coos); |
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382 | |
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383 | edgesmap[e]->get_bounds(x1, y1, x2, y2); |
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384 | |
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385 | edgetextmap[e]->property_x().set_value((x1+x2)/2); |
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386 | edgetextmap[e]->property_y().set_value((y1+y2)/2); |
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387 | } |
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388 | |
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389 | g.firstIn(e,active_node); |
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390 | for(;e!=INVALID;g.nextIn(e)) |
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391 | { |
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392 | Gnome::Canvas::Points coos; |
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393 | double x1, x2, y1, y2; |
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394 | |
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395 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2); |
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396 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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397 | |
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398 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2); |
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399 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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400 | |
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401 | edgesmap[e]->property_points().set_value(coos); |
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402 | |
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403 | edgesmap[e]->get_bounds(x1, y1, x2, y2); |
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404 | |
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405 | edgetextmap[e]->property_x().set_value((x1+x2)/2); |
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406 | edgetextmap[e]->property_y().set_value((y1+y2)/2); |
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407 | } |
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408 | } |
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409 | default: break; |
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410 | } |
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411 | |
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412 | return true; |
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413 | } |
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414 | |
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415 | bool GraphDisplayerCanvas::create_node_event_handler(GdkEvent* e) |
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416 | { |
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417 | switch(e->type) |
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418 | { |
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419 | case GDK_BUTTON_PRESS: |
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420 | isbutton=true; |
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421 | |
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422 | active_node=NodeIt(g,g.addNode()); |
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423 | |
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424 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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425 | |
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426 | 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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427 | active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]); |
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428 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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429 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::outline_color("black"); |
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430 | (nodesmap[active_node])->show(); |
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431 | break; |
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432 | case GDK_MOTION_NOTIFY: |
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433 | { |
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434 | double world_motion_x, world_motion_y; |
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435 | GdkEvent * generated=new GdkEvent(); |
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436 | window_to_world (e->motion.x, e->motion.y, world_motion_x, world_motion_y); |
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437 | generated->motion.x=world_motion_x; |
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438 | generated->motion.y=world_motion_y; |
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439 | generated->type=GDK_MOTION_NOTIFY; |
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440 | move_event_handler(generated); |
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441 | break; |
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442 | } |
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443 | case GDK_BUTTON_RELEASE: |
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444 | isbutton=false; |
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445 | *active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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446 | active_item=NULL; |
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447 | updateScrollRegion(); |
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448 | break; |
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449 | default: |
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450 | break; |
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451 | } |
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452 | return false; |
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453 | } |
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454 | |
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455 | bool GraphDisplayerCanvas::create_edge_event_handler(GdkEvent* e) |
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456 | { |
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457 | switch(e->type) |
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458 | { |
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459 | case GDK_BUTTON_PRESS: |
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460 | if(!active_item) |
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461 | { |
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462 | //we mark the location of the event to be able to calculate parameters of dragging |
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463 | clicked_x=e->button.x; |
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464 | clicked_y=e->button.y; |
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465 | active_item=(get_item_at(e->button.x, e->button.y)); |
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466 | active_node=INVALID; |
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467 | for (NodeIt i(g); i!=INVALID; ++i) |
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468 | { |
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469 | if(nodesmap[i]==active_item) |
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470 | { |
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471 | active_node=i; |
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472 | } |
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473 | } |
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474 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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475 | isbutton=true; |
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476 | } |
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477 | else |
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478 | { |
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479 | target_item=(get_item_at(e->button.x, e->button.y)); |
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480 | Graph::NodeIt target_node=INVALID; |
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481 | for (NodeIt i(g); i!=INVALID; ++i) |
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482 | { |
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483 | if(nodesmap[i]==target_item) |
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484 | { |
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485 | target_node=i; |
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486 | } |
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487 | } |
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488 | *(nodesmap[target_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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489 | |
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490 | //creating new edge |
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491 | // Graph::Edge new_edge=g.addEdge(active_node, target_node); |
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492 | active_edge=EdgeIt(g,g.addEdge(active_node, target_node)); |
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493 | |
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494 | //calculating coordinates of new edge |
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495 | Gnome::Canvas::Points coos; |
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496 | double x1, x2, y1, y2; |
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497 | |
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498 | active_item->get_bounds(x1, y1, x2, y2); |
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499 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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500 | |
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501 | target_item->get_bounds(x1, y1, x2, y2); |
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502 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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503 | |
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504 | //drawing new edge |
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505 | edgesmap[active_edge]=new Gnome::Canvas::Line(displayed_graph, coos); |
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506 | *(edgesmap[active_edge]) << Gnome::Canvas::Properties::fill_color("green"); |
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507 | edgesmap[active_edge]->property_width_pixels().set_value(10); |
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508 | |
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509 | //redraw nodes to blank terminations of the new edge |
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510 | target_item->raise_to_top(); |
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511 | active_item->raise_to_top(); |
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512 | |
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513 | //initializing edge-text as well, to empty string |
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514 | edgesmap[active_edge]->get_bounds(x1, y1, x2, y2); |
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515 | edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, ""); |
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516 | edgetextmap[active_edge]->property_fill_color().set_value("black"); |
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517 | } |
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518 | break; |
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519 | case GDK_BUTTON_RELEASE: |
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520 | isbutton=false; |
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521 | if(target_item) |
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522 | { |
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523 | *active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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524 | *target_item << Gnome::Canvas::Properties::fill_color("blue"); |
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525 | active_item=NULL; |
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526 | target_item=NULL; |
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527 | } |
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528 | break; |
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529 | default: |
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530 | break; |
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531 | } |
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532 | return false; |
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533 | } |
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534 | |
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