1 | #include <graph_displayer_canvas.h> |
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2 | #include <broken_edge.h> |
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3 | #include <math.h> |
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4 | |
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5 | |
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6 | bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event) |
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7 | { |
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8 | Gnome::Canvas::CanvasAA::on_expose_event(event); |
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9 | //usleep(10000); |
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10 | //rezoom(); |
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11 | return true; |
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12 | } |
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13 | |
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14 | void GraphDisplayerCanvas::changeEditorialTool(int newtool) |
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15 | { |
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16 | if(actual_tool!=newtool) |
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17 | { |
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18 | |
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19 | actual_handler.disconnect(); |
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20 | |
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21 | switch(actual_tool) |
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22 | { |
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23 | case CREATE_EDGE: |
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24 | { |
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25 | GdkEvent * generated=new GdkEvent(); |
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26 | generated->type=GDK_BUTTON_RELEASE; |
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27 | generated->button.button=3; |
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28 | createEdgeEventHandler(generated); |
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29 | break; |
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30 | } |
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31 | case EDGE_MAP_EDIT: |
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32 | break; |
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33 | default: |
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34 | break; |
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35 | } |
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36 | |
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37 | active_item=NULL; |
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38 | target_item=NULL; |
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39 | active_edge=INVALID; |
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40 | active_node=INVALID; |
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41 | |
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42 | |
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43 | actual_tool=newtool; |
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44 | |
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45 | switch(newtool) |
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46 | { |
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47 | case MOVE: |
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48 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false); |
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49 | break; |
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50 | |
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51 | case CREATE_NODE: |
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52 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createNodeEventHandler), false); |
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53 | break; |
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54 | |
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55 | case CREATE_EDGE: |
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56 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createEdgeEventHandler), false); |
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57 | break; |
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58 | |
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59 | case ERASER: |
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60 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraserEventHandler), false); |
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61 | break; |
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62 | |
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63 | case EDGE_MAP_EDIT: |
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64 | grab_focus(); |
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65 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false); |
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66 | break; |
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67 | |
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68 | case NODE_MAP_EDIT: |
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69 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false); |
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70 | break; |
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71 | |
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72 | default: |
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73 | break; |
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74 | } |
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75 | } |
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76 | } |
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77 | |
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78 | int GraphDisplayerCanvas::getActualTool() |
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79 | { |
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80 | return actual_tool; |
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81 | } |
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82 | |
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83 | bool GraphDisplayerCanvas::moveEventHandler(GdkEvent* e) |
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84 | { |
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85 | switch(e->type) |
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86 | { |
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87 | case GDK_BUTTON_PRESS: |
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88 | //we mark the location of the event to be able to calculate parameters of dragging |
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89 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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90 | |
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91 | active_item=(get_item_at(clicked_x, clicked_y)); |
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92 | active_node=INVALID; |
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93 | for (NodeIt i(g); i!=INVALID; ++i) |
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94 | { |
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95 | if(nodesmap[i]==active_item) |
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96 | { |
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97 | active_node=i; |
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98 | } |
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99 | } |
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100 | switch(e->button.button) |
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101 | { |
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102 | case 3: |
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103 | isbutton=3; |
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104 | break; |
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105 | default: |
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106 | isbutton=1; |
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107 | break; |
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108 | } |
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109 | break; |
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110 | case GDK_BUTTON_RELEASE: |
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111 | isbutton=0; |
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112 | active_item=NULL; |
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113 | active_node=INVALID; |
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114 | break; |
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115 | case GDK_MOTION_NOTIFY: |
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116 | //we only have to do sg. if the mouse button is pressed AND the click was on a node that was found in the set of nodes |
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117 | if(active_node!=INVALID) |
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118 | { |
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119 | //new coordinates will be the old values, |
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120 | //because the item will be moved to the |
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121 | //new coordinate therefore the new movement |
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122 | //has to be calculated from here |
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123 | |
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124 | double new_x, new_y; |
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125 | |
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126 | window_to_world (e->motion.x, e->motion.y, new_x, new_y); |
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127 | |
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128 | double dx=new_x-clicked_x; |
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129 | double dy=new_y-clicked_y; |
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130 | |
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131 | //repositioning node and its text |
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132 | active_item->move(dx, dy); |
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133 | nodetextmap[active_node]->move(dx, dy); |
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134 | |
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135 | clicked_x=new_x; |
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136 | clicked_y=new_y; |
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137 | |
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138 | //all the edges connected to the moved point has to be redrawn |
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139 | EdgeIt ei; |
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140 | |
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141 | g.firstOut(ei,active_node); |
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142 | |
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143 | for(;ei!=INVALID;g.nextOut(ei)) |
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144 | { |
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145 | Gnome::Canvas::Points coos; |
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146 | double x1, x2, y1, y2; |
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147 | |
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148 | nodesmap[g.source(ei)]->get_bounds(x1, y1, x2, y2); |
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149 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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150 | |
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151 | nodesmap[g.target(ei)]->get_bounds(x1, y1, x2, y2); |
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152 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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153 | |
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154 | if(isbutton==3) |
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155 | { |
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156 | edgesmap[ei]->setPoints(coos); |
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157 | } |
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158 | else |
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159 | { |
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160 | edgesmap[ei]->setPoints(coos,true); |
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161 | } |
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162 | |
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163 | //reposition of edgetext |
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164 | xy<double> text_pos=edgesmap[ei]->getArrowPos(); |
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165 | text_pos+=(xy<double>(10,10)); |
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166 | edgetextmap[ei]->property_x().set_value(text_pos.x); |
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167 | edgetextmap[ei]->property_y().set_value(text_pos.y); |
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168 | } |
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169 | |
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170 | g.firstIn(ei,active_node); |
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171 | for(;ei!=INVALID;g.nextIn(ei)) |
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172 | { |
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173 | Gnome::Canvas::Points coos; |
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174 | double x1, x2, y1, y2; |
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175 | |
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176 | nodesmap[g.source(ei)]->get_bounds(x1, y1, x2, y2); |
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177 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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178 | |
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179 | nodesmap[g.target(ei)]->get_bounds(x1, y1, x2, y2); |
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180 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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181 | |
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182 | if(isbutton==3) |
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183 | { |
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184 | edgesmap[ei]->setPoints(coos); |
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185 | } |
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186 | else |
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187 | { |
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188 | edgesmap[ei]->setPoints(coos,true); |
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189 | } |
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190 | |
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191 | xy<double> text_pos=edgesmap[ei]->getArrowPos(); |
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192 | text_pos+=(xy<double>(10,10)); |
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193 | edgetextmap[ei]->property_x().set_value(text_pos.x); |
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194 | edgetextmap[ei]->property_y().set_value(text_pos.y); |
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195 | } |
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196 | } |
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197 | default: break; |
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198 | } |
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199 | |
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200 | return false; |
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201 | } |
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202 | |
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203 | bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e) |
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204 | { |
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205 | switch(e->type) |
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206 | { |
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207 | |
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208 | //draw the new node in red at the clicked place |
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209 | case GDK_2BUTTON_PRESS: |
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210 | std::cout << "double click" << std::endl; |
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211 | break; |
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212 | case GDK_BUTTON_PRESS: |
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213 | isbutton=1; |
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214 | |
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215 | active_node=NodeIt(g,g.addNode()); |
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216 | |
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217 | //initiating values corresponding to new node in maps |
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218 | |
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219 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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220 | |
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221 | target_item=NULL; |
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222 | target_item=get_item_at(clicked_x, clicked_y); |
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223 | |
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224 | 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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225 | active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]); |
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226 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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227 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::outline_color("black"); |
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228 | (nodesmap[active_node])->show(); |
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229 | |
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230 | nodetextmap[active_node]=new Gnome::Canvas::Text(displayed_graph, clicked_x+node_property_defaults[N_RADIUS]+5, clicked_y+node_property_defaults[N_RADIUS]+5, ""); |
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231 | nodetextmap[active_node]->property_fill_color().set_value("darkblue"); |
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232 | |
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233 | mapwin->updateNode(active_node); |
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234 | |
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235 | break; |
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236 | |
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237 | //move the new node |
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238 | case GDK_MOTION_NOTIFY: |
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239 | { |
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240 | GdkEvent * generated=new GdkEvent(); |
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241 | generated->motion.x=e->motion.x; |
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242 | generated->motion.y=e->motion.y; |
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243 | generated->type=GDK_MOTION_NOTIFY; |
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244 | moveEventHandler(generated); |
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245 | break; |
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246 | } |
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247 | |
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248 | //finalize the new node |
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249 | case GDK_BUTTON_RELEASE: |
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250 | isbutton=0; |
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251 | if(!target_item) |
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252 | { |
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253 | //Its appropriate color is given by update. |
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254 | //*active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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255 | } |
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256 | else |
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257 | { |
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258 | //In this case the given color has to be overwritten, because the noe covers an other item. |
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259 | *active_item << Gnome::Canvas::Properties::fill_color("lightblue"); |
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260 | } |
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261 | target_item=NULL; |
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262 | active_item=NULL; |
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263 | active_node=INVALID; |
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264 | break; |
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265 | default: |
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266 | break; |
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267 | } |
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268 | return false; |
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269 | } |
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270 | |
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271 | bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e) |
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272 | { |
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273 | switch(e->type) |
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274 | { |
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275 | case GDK_BUTTON_PRESS: |
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276 | //in edge creation right button has special meaning |
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277 | if(e->button.button!=3) |
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278 | { |
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279 | //there is not yet selected node |
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280 | if(active_node==INVALID) |
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281 | { |
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282 | //we mark the location of the event to be able to calculate parameters of dragging |
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283 | |
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284 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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285 | |
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286 | active_item=(get_item_at(clicked_x, clicked_y)); |
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287 | active_node=INVALID; |
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288 | for (NodeIt i(g); i!=INVALID; ++i) |
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289 | { |
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290 | if(nodesmap[i]==active_item) |
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291 | { |
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292 | active_node=i; |
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293 | } |
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294 | } |
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295 | //the clicked item is really a node |
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296 | if(active_node!=INVALID) |
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297 | { |
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298 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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299 | isbutton=1; |
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300 | } |
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301 | //clicked item was not a node. It could be e.g. edge. |
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302 | else |
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303 | { |
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304 | active_item=NULL; |
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305 | } |
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306 | } |
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307 | //we only have to do sg. if the mouse button |
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308 | // is pressed already once AND the click was |
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309 | // on a node that was found in the set of |
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310 | //nodes, and now we only search for the second |
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311 | //node |
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312 | else |
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313 | { |
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314 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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315 | target_item=(get_item_at(clicked_x, clicked_y)); |
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316 | Graph::NodeIt target_node=INVALID; |
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317 | for (NodeIt i(g); i!=INVALID; ++i) |
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318 | { |
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319 | if(nodesmap[i]==target_item) |
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320 | { |
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321 | target_node=i; |
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322 | } |
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323 | } |
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324 | //the clicked item is a node, the edge can be drawn |
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325 | if(target_node!=INVALID) |
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326 | { |
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327 | if(target_node!=active_node) |
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328 | { |
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329 | *(nodesmap[target_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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330 | |
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331 | //creating new edge |
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332 | active_edge=EdgeIt(g,g.addEdge(active_node, target_node)); |
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333 | |
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334 | //initiating values corresponding to new edge in maps |
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335 | mapstorage.initMapsForEdge(active_edge); |
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336 | |
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337 | //calculating coordinates of new edge |
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338 | Gnome::Canvas::Points coos; |
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339 | double x1, x2, y1, y2; |
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340 | |
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341 | active_item->get_bounds(x1, y1, x2, y2); |
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342 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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343 | |
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344 | target_item->get_bounds(x1, y1, x2, y2); |
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345 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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346 | |
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347 | //drawing new edge |
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348 | edgesmap[active_edge]=new BrokenEdge(displayed_graph, coos, *this); |
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349 | *(edgesmap[active_edge]) << Gnome::Canvas::Properties::fill_color("green"); |
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350 | edgesmap[active_edge]->property_width_pixels().set_value(10); |
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351 | |
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352 | //redraw nodes to blank terminations of the new edge |
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353 | target_item->raise_to_top(); |
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354 | active_item->raise_to_top(); |
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355 | |
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356 | //initializing edge-text as well, to empty string |
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357 | xy<double> text_pos=edgesmap[active_edge]->getArrowPos(); |
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358 | text_pos+=(xy<double>(10,10)); |
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359 | |
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360 | edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, ""); |
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361 | edgetextmap[active_edge]->property_fill_color().set_value("darkgreen"); |
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362 | |
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363 | //updating its properties |
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364 | mapwin->updateEdge(active_edge); |
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365 | } |
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366 | else |
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367 | { |
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368 | target_node=INVALID; |
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369 | std::cout << "Loop edge is not yet implemented!" << std::endl; |
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370 | } |
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371 | } |
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372 | //clicked item was not a node. it could be an e.g. edge. we do not deal with it furthermore. |
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373 | else |
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374 | { |
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375 | target_item=NULL; |
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376 | } |
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377 | } |
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378 | } |
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379 | break; |
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380 | case GDK_BUTTON_RELEASE: |
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381 | isbutton=0; |
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382 | //we clear settings in two cases |
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383 | //1: the edge is ready (target_item has valid value) |
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384 | //2: the edge creation is cancelled with right button |
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385 | if((target_item)||(e->button.button==3)) |
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386 | { |
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387 | if(active_item) |
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388 | { |
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389 | *active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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390 | active_item=NULL; |
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391 | } |
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392 | if(target_item) |
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393 | { |
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394 | *target_item << Gnome::Canvas::Properties::fill_color("blue"); |
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395 | target_item=NULL; |
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396 | } |
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397 | active_node=INVALID; |
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398 | active_edge=INVALID; |
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399 | } |
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400 | break; |
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401 | default: |
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402 | break; |
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403 | } |
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404 | return false; |
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405 | } |
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406 | |
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407 | bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e) |
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408 | { |
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409 | switch(e->type) |
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410 | { |
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411 | case GDK_BUTTON_PRESS: |
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412 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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413 | active_item=(get_item_at(clicked_x, clicked_y)); |
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414 | active_node=INVALID; |
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415 | active_edge=INVALID; |
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416 | for (NodeIt i(g); i!=INVALID; ++i) |
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417 | { |
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418 | if(nodesmap[i]==active_item) |
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419 | { |
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420 | active_node=i; |
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421 | } |
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422 | } |
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423 | if(active_node==INVALID) |
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424 | { |
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425 | for (EdgeIt i(g); i!=INVALID; ++i) |
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426 | { |
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427 | if(edgesmap[i]==active_item) |
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428 | { |
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429 | active_edge=i; |
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430 | } |
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431 | } |
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432 | } |
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433 | if(active_item) |
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434 | { |
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435 | *active_item << Gnome::Canvas::Properties::fill_color("red"); |
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436 | } |
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437 | break; |
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438 | |
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439 | case GDK_BUTTON_RELEASE: |
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440 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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441 | if(active_item) |
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442 | { |
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443 | if( active_item == ( get_item_at (clicked_x, clicked_y) ) ) |
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444 | { |
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445 | if(active_node!=INVALID) |
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446 | { |
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447 | |
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448 | //collecting edges to delete |
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449 | EdgeIt e; |
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450 | std::set<Graph::Edge> edges_to_delete; |
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451 | |
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452 | g.firstOut(e,active_node); |
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453 | for(;e!=INVALID;g.nextOut(e)) |
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454 | { |
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455 | edges_to_delete.insert(e); |
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456 | } |
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457 | |
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458 | g.firstIn(e,active_node); |
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459 | for(;e!=INVALID;g.nextIn(e)) |
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460 | { |
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461 | edges_to_delete.insert(e); |
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462 | } |
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463 | |
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464 | //deleting collected edges |
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465 | for(std::set<Graph::Edge>::iterator edge_set_it=edges_to_delete.begin();edge_set_it!=edges_to_delete.end();edge_set_it++) |
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466 | { |
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467 | deleteItem(*edge_set_it); |
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468 | } |
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469 | deleteItem(active_node); |
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470 | } |
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471 | //a simple edge was chosen |
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472 | else |
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473 | { |
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474 | deleteItem(active_edge); |
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475 | } |
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476 | } |
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477 | //pointer was moved, deletion is cancelled |
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478 | else |
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479 | { |
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480 | if(active_node!=INVALID) |
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481 | { |
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482 | *active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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483 | } |
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484 | else |
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485 | { |
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486 | *active_item << Gnome::Canvas::Properties::fill_color("green"); |
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487 | } |
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488 | } |
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489 | } |
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490 | //reseting datas |
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491 | active_item=NULL; |
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492 | active_edge=INVALID; |
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493 | active_node=INVALID; |
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494 | break; |
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495 | |
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496 | case GDK_MOTION_NOTIFY: |
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497 | break; |
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498 | |
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499 | default: |
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500 | break; |
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501 | } |
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502 | return false; |
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503 | } |
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504 | |
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505 | bool GraphDisplayerCanvas::edgeMapEditEventHandler(GdkEvent* e) |
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506 | { |
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507 | switch(e->type) |
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508 | { |
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509 | case GDK_KEY_PRESS: |
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510 | { |
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511 | std::cout << "Any button was pressed" << std::endl; |
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512 | switch(((GdkEventKey*)e)->keyval) |
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513 | { |
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514 | case GDK_A: |
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515 | std::cout << "A button was pressed" << std::endl; |
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516 | break; |
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517 | default: |
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518 | break; |
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519 | } |
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520 | |
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521 | break; |
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522 | } |
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523 | case GDK_BUTTON_PRESS: |
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524 | { |
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525 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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526 | active_item=(get_item_at(clicked_x, clicked_y)); |
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527 | Graph::EdgeIt clicked_edge=INVALID; |
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528 | for (EdgeIt i(g); i!=INVALID; ++i) |
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529 | { |
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530 | if(edgesmap[i]==active_item) |
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531 | { |
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532 | clicked_edge=i; |
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533 | } |
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534 | } |
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535 | if(clicked_edge!=INVALID) |
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536 | { |
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537 | if(edgetextmap[clicked_edge]->property_text().get_value()!="") |
---|
538 | { |
---|
539 | active_edge=clicked_edge; |
---|
540 | if(canvasentrywidget) |
---|
541 | { |
---|
542 | delete(canvasentrywidget); |
---|
543 | } |
---|
544 | entrywidget.show(); |
---|
545 | entrywidget.set_text(edgetextmap[active_edge]->property_text().get_value()); |
---|
546 | xy<double> entry_coos; |
---|
547 | entry_coos.x=(edgetextmap[active_edge])->property_x().get_value(); |
---|
548 | entry_coos.x-=edgetextmap[active_edge]->property_text_width().get_value()/2; |
---|
549 | entry_coos.y=(edgetextmap[active_edge])->property_y().get_value(); |
---|
550 | entry_coos.y-=edgetextmap[active_edge]->property_text_height().get_value()*1.5/2; |
---|
551 | canvasentrywidget=new Gnome::Canvas::Widget(displayed_graph, entry_coos.x, entry_coos.y, entrywidget); |
---|
552 | canvasentrywidget->property_width().set_value(edgetextmap[active_edge]->property_text_width().get_value()*1.5); |
---|
553 | canvasentrywidget->property_height().set_value(edgetextmap[active_edge]->property_text_height().get_value()*1.5); |
---|
554 | } |
---|
555 | } |
---|
556 | else |
---|
557 | { |
---|
558 | //mentse el -> problema, hogy nem tudja melyik map-be |
---|
559 | entrywidget.hide(); |
---|
560 | } |
---|
561 | break; |
---|
562 | } |
---|
563 | default: |
---|
564 | break; |
---|
565 | } |
---|
566 | return false; |
---|
567 | } |
---|
568 | |
---|
569 | bool GraphDisplayerCanvas::nodeMapEditEventHandler(GdkEvent* e) |
---|
570 | { |
---|
571 | e=e; |
---|
572 | return false; |
---|
573 | } |
---|
574 | |
---|
575 | bool GraphDisplayerCanvas::entryWidgetChangeHandler(GdkEvent* e) |
---|
576 | { |
---|
577 | Glib::ustring mapvalue = entrywidget.get_text(); |
---|
578 | std::cout << mapvalue << std::endl; |
---|
579 | e=e; |
---|
580 | return false; |
---|
581 | } |
---|
582 | |
---|
583 | void GraphDisplayerCanvas::deleteItem(NodeIt node_to_delete) |
---|
584 | { |
---|
585 | delete(nodetextmap[node_to_delete]); |
---|
586 | delete(nodesmap[node_to_delete]); |
---|
587 | g.erase(node_to_delete); |
---|
588 | } |
---|
589 | |
---|
590 | void GraphDisplayerCanvas::deleteItem(EdgeIt edge_to_delete) |
---|
591 | { |
---|
592 | delete(edgetextmap[edge_to_delete]); |
---|
593 | delete(edgesmap[edge_to_delete]); |
---|
594 | g.erase(edge_to_delete); |
---|
595 | } |
---|
596 | |
---|
597 | void GraphDisplayerCanvas::deleteItem(Graph::Edge edge_to_delete) |
---|
598 | { |
---|
599 | delete(edgetextmap[edge_to_delete]); |
---|
600 | delete(edgesmap[edge_to_delete]); |
---|
601 | g.erase(edge_to_delete); |
---|
602 | } |
---|
603 | |
---|
604 | void GraphDisplayerCanvas::textReposition(xy<double> new_place) |
---|
605 | { |
---|
606 | new_place+=(xy<double>(10,10)); |
---|
607 | edgetextmap[active_edge]->property_x().set_value(new_place.x); |
---|
608 | edgetextmap[active_edge]->property_y().set_value(new_place.y); |
---|
609 | } |
---|
610 | |
---|
611 | void GraphDisplayerCanvas::toggleEdgeActivity(BrokenEdge* active_bre, bool on) |
---|
612 | { |
---|
613 | if(on) |
---|
614 | { |
---|
615 | if(active_edge!=INVALID) |
---|
616 | { |
---|
617 | std::cout << "ERROR!!!! Valid edge found!" << std::endl; |
---|
618 | } |
---|
619 | else |
---|
620 | { |
---|
621 | for (EdgeIt i(g); i!=INVALID; ++i) |
---|
622 | { |
---|
623 | if(edgesmap[i]==active_bre) |
---|
624 | { |
---|
625 | active_edge=i; |
---|
626 | } |
---|
627 | } |
---|
628 | } |
---|
629 | } |
---|
630 | else |
---|
631 | { |
---|
632 | if(active_edge!=INVALID) |
---|
633 | { |
---|
634 | active_edge=INVALID; |
---|
635 | } |
---|
636 | else |
---|
637 | { |
---|
638 | std::cout << "ERROR!!!! Invalid edge found!" << std::endl; |
---|
639 | } |
---|
640 | } |
---|
641 | |
---|
642 | } |
---|
643 | |
---|