1 | #include "graph_displayer_canvas.h" |
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2 | #include "broken_edge.h" |
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3 | #include <cmath> |
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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 | //has to do the same thing as in the case of NODE_MAP_EDIT |
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33 | case NODE_MAP_EDIT: |
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34 | { |
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35 | GdkEvent * generated=new GdkEvent(); |
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36 | generated->type=GDK_KEY_PRESS; |
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37 | ((GdkEventKey*)generated)->keyval=GDK_KP_Enter; |
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38 | entryWidgetChangeHandler(generated); |
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39 | entrywidget.hide(); |
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40 | break; |
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41 | } |
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42 | default: |
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43 | break; |
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44 | } |
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45 | |
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46 | active_item=NULL; |
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47 | target_item=NULL; |
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48 | active_edge=INVALID; |
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49 | active_node=INVALID; |
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50 | |
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51 | |
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52 | actual_tool=newtool; |
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53 | |
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54 | switch(newtool) |
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55 | { |
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56 | case MOVE: |
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57 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false); |
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58 | break; |
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59 | |
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60 | case CREATE_NODE: |
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61 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createNodeEventHandler), false); |
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62 | break; |
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63 | |
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64 | case CREATE_EDGE: |
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65 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createEdgeEventHandler), false); |
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66 | break; |
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67 | |
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68 | case ERASER: |
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69 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraserEventHandler), false); |
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70 | break; |
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71 | |
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72 | case EDGE_MAP_EDIT: |
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73 | grab_focus(); |
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74 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false); |
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75 | break; |
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76 | |
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77 | case NODE_MAP_EDIT: |
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78 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false); |
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79 | break; |
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80 | |
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81 | default: |
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82 | break; |
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83 | } |
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84 | } |
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85 | } |
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86 | |
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87 | int GraphDisplayerCanvas::getActualTool() |
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88 | { |
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89 | return actual_tool; |
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90 | } |
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91 | |
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92 | bool GraphDisplayerCanvas::moveEventHandler(GdkEvent* e) |
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93 | { |
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94 | switch(e->type) |
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95 | { |
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96 | case GDK_BUTTON_PRESS: |
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97 | //we mark the location of the event to be able to calculate parameters of dragging |
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98 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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99 | |
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100 | active_item=(get_item_at(clicked_x, clicked_y)); |
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101 | active_node=INVALID; |
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102 | for (NodeIt i(mapstorage.graph); i!=INVALID; ++i) |
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103 | { |
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104 | if(nodesmap[i]==active_item) |
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105 | { |
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106 | active_node=i; |
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107 | } |
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108 | } |
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109 | switch(e->button.button) |
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110 | { |
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111 | case 3: |
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112 | isbutton=3; |
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113 | break; |
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114 | default: |
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115 | isbutton=1; |
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116 | break; |
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117 | } |
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118 | break; |
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119 | case GDK_BUTTON_RELEASE: |
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120 | isbutton=0; |
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121 | active_item=NULL; |
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122 | active_node=INVALID; |
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123 | break; |
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124 | case GDK_MOTION_NOTIFY: |
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125 | //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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126 | if(active_node!=INVALID) |
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127 | { |
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128 | mapstorage.modified = true; |
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129 | mapstorage.coords.set(active_node, xy<double>(clicked_x, clicked_y)); |
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130 | //new coordinates will be the old values, |
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131 | //because the item will be moved to the |
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132 | //new coordinate therefore the new movement |
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133 | //has to be calculated from here |
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134 | |
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135 | double new_x, new_y; |
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136 | |
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137 | window_to_world (e->motion.x, e->motion.y, new_x, new_y); |
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138 | |
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139 | double dx=new_x-clicked_x; |
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140 | double dy=new_y-clicked_y; |
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141 | |
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142 | //repositioning node and its text |
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143 | active_item->move(dx, dy); |
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144 | nodetextmap[active_node]->move(dx, dy); |
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145 | |
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146 | clicked_x=new_x; |
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147 | clicked_y=new_y; |
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148 | |
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149 | //all the edges connected to the moved point has to be redrawn |
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150 | EdgeIt ei; |
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151 | |
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152 | mapstorage.graph.firstOut(ei,active_node); |
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153 | |
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154 | for(;ei!=INVALID;mapstorage.graph.nextOut(ei)) |
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155 | { |
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156 | Gnome::Canvas::Points coos; |
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157 | double x1, x2, y1, y2; |
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158 | |
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159 | nodesmap[mapstorage.graph.source(ei)]->get_bounds(x1, y1, x2, y2); |
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160 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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161 | |
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162 | nodesmap[mapstorage.graph.target(ei)]->get_bounds(x1, y1, x2, y2); |
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163 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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164 | |
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165 | if(isbutton==3) |
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166 | { |
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167 | edgesmap[ei]->setPoints(coos); |
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168 | } |
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169 | else |
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170 | { |
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171 | edgesmap[ei]->setPoints(coos,true); |
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172 | } |
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173 | |
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174 | //reposition of edgetext |
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175 | xy<double> text_pos=edgesmap[ei]->getArrowPos(); |
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176 | text_pos+=(xy<double>(10,10)); |
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177 | edgetextmap[ei]->property_x().set_value(text_pos.x); |
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178 | edgetextmap[ei]->property_y().set_value(text_pos.y); |
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179 | } |
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180 | |
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181 | mapstorage.graph.firstIn(ei,active_node); |
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182 | for(;ei!=INVALID;mapstorage.graph.nextIn(ei)) |
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183 | { |
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184 | Gnome::Canvas::Points coos; |
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185 | double x1, x2, y1, y2; |
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186 | |
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187 | nodesmap[mapstorage.graph.source(ei)]->get_bounds(x1, y1, x2, y2); |
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188 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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189 | |
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190 | nodesmap[mapstorage.graph.target(ei)]->get_bounds(x1, y1, x2, y2); |
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191 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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192 | |
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193 | if(isbutton==3) |
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194 | { |
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195 | edgesmap[ei]->setPoints(coos); |
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196 | } |
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197 | else |
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198 | { |
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199 | edgesmap[ei]->setPoints(coos,true); |
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200 | } |
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201 | |
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202 | xy<double> text_pos=edgesmap[ei]->getArrowPos(); |
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203 | text_pos+=(xy<double>(10,10)); |
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204 | edgetextmap[ei]->property_x().set_value(text_pos.x); |
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205 | edgetextmap[ei]->property_y().set_value(text_pos.y); |
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206 | } |
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207 | } |
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208 | default: break; |
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209 | } |
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210 | |
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211 | return false; |
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212 | } |
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213 | |
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214 | bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e) |
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215 | { |
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216 | switch(e->type) |
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217 | { |
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218 | |
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219 | //draw the new node in red at the clicked place |
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220 | case GDK_2BUTTON_PRESS: |
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221 | //std::cout << "double click" << std::endl; |
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222 | break; |
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223 | case GDK_BUTTON_PRESS: |
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224 | mapstorage.modified = true; |
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225 | |
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226 | isbutton=1; |
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227 | |
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228 | active_node=NodeIt(mapstorage.graph,mapstorage.graph.addNode()); |
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229 | |
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230 | //initiating values corresponding to new node in maps |
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231 | |
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232 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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233 | |
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234 | mapstorage.coords.set(active_node, xy<double>(clicked_x, clicked_y)); |
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235 | (*mapstorage.nodemap_storage["id"])[active_node] = |
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236 | mapstorage.graph.id(active_node); |
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237 | |
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238 | nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph, |
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239 | clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20); |
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240 | active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]); |
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241 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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242 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::outline_color("black"); |
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243 | (nodesmap[active_node])->show(); |
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244 | |
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245 | nodetextmap[active_node]=new Gnome::Canvas::Text(displayed_graph, |
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246 | clicked_x+node_property_defaults[N_RADIUS]+5, |
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247 | clicked_y+node_property_defaults[N_RADIUS]+5, ""); |
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248 | nodetextmap[active_node]->property_fill_color().set_value("darkblue"); |
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249 | |
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250 | mapwin.updateNode(active_node); |
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251 | |
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252 | break; |
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253 | |
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254 | //move the new node |
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255 | case GDK_MOTION_NOTIFY: |
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256 | { |
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257 | GdkEvent * generated=new GdkEvent(); |
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258 | generated->motion.x=e->motion.x; |
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259 | generated->motion.y=e->motion.y; |
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260 | generated->type=GDK_MOTION_NOTIFY; |
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261 | moveEventHandler(generated); |
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262 | break; |
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263 | } |
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264 | |
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265 | //finalize the new node |
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266 | case GDK_BUTTON_RELEASE: |
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267 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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268 | |
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269 | active_item->lower_to_bottom(); |
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270 | |
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271 | target_item=NULL; |
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272 | target_item=get_item_at(clicked_x, clicked_y); |
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273 | |
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274 | active_item->raise_to_top(); |
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275 | |
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276 | isbutton=0; |
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277 | if(target_item==active_item) |
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278 | { |
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279 | //Its appropriate color is given by update. |
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280 | *active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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281 | } |
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282 | else |
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283 | { |
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284 | //In this case the given color has to be overwritten, because the noe covers an other item. |
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285 | *active_item << Gnome::Canvas::Properties::fill_color("lightblue"); |
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286 | } |
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287 | target_item=NULL; |
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288 | active_item=NULL; |
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289 | active_node=INVALID; |
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290 | break; |
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291 | default: |
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292 | break; |
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293 | } |
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294 | return false; |
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295 | } |
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296 | |
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297 | bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e) |
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298 | { |
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299 | switch(e->type) |
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300 | { |
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301 | case GDK_BUTTON_PRESS: |
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302 | //in edge creation right button has special meaning |
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303 | if(e->button.button!=3) |
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304 | { |
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305 | //there is not yet selected node |
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306 | if(active_node==INVALID) |
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307 | { |
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308 | //we mark the location of the event to be able to calculate parameters of dragging |
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309 | |
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310 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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311 | |
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312 | active_item=(get_item_at(clicked_x, clicked_y)); |
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313 | active_node=INVALID; |
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314 | for (NodeIt i(mapstorage.graph); i!=INVALID; ++i) |
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315 | { |
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316 | if(nodesmap[i]==active_item) |
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317 | { |
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318 | active_node=i; |
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319 | } |
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320 | } |
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321 | //the clicked item is really a node |
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322 | if(active_node!=INVALID) |
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323 | { |
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324 | *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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325 | isbutton=1; |
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326 | } |
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327 | //clicked item was not a node. It could be e.g. edge. |
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328 | else |
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329 | { |
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330 | active_item=NULL; |
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331 | } |
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332 | } |
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333 | //we only have to do sg. if the mouse button |
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334 | // is pressed already once AND the click was |
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335 | // on a node that was found in the set of |
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336 | //nodes, and now we only search for the second |
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337 | //node |
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338 | else |
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339 | { |
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340 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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341 | target_item=(get_item_at(clicked_x, clicked_y)); |
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342 | Graph::NodeIt target_node=INVALID; |
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343 | for (NodeIt i(mapstorage.graph); i!=INVALID; ++i) |
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344 | { |
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345 | if(nodesmap[i]==target_item) |
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346 | { |
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347 | target_node=i; |
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348 | } |
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349 | } |
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350 | //the clicked item is a node, the edge can be drawn |
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351 | if(target_node!=INVALID) |
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352 | { |
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353 | if(target_node!=active_node) |
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354 | { |
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355 | mapstorage.modified = true; |
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356 | |
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357 | *(nodesmap[target_node]) << Gnome::Canvas::Properties::fill_color("red"); |
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358 | |
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359 | //creating new edge |
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360 | active_edge=EdgeIt(mapstorage.graph,mapstorage.graph.addEdge(active_node, target_node)); |
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361 | |
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362 | //initiating values corresponding to new edge in maps |
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363 | mapstorage.initMapsForEdge(active_edge); |
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364 | (*mapstorage.edgemap_storage["id"])[active_edge] = mapstorage.graph.id(active_edge); |
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365 | |
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366 | //calculating coordinates of new edge |
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367 | Gnome::Canvas::Points coos; |
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368 | double x1, x2, y1, y2; |
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369 | |
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370 | active_item->get_bounds(x1, y1, x2, y2); |
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371 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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372 | |
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373 | target_item->get_bounds(x1, y1, x2, y2); |
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374 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2)); |
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375 | |
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376 | //drawing new edge |
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377 | edgesmap[active_edge]=new BrokenEdge(displayed_graph, coos, *this); |
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378 | *(edgesmap[active_edge]) << Gnome::Canvas::Properties::fill_color("green"); |
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379 | edgesmap[active_edge]->property_width_pixels().set_value(10); |
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380 | |
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381 | //redraw nodes to blank terminations of the new edge |
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382 | target_item->raise_to_top(); |
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383 | active_item->raise_to_top(); |
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384 | |
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385 | //initializing edge-text as well, to empty string |
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386 | xy<double> text_pos=edgesmap[active_edge]->getArrowPos(); |
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387 | text_pos+=(xy<double>(10,10)); |
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388 | |
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389 | edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, ""); |
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390 | edgetextmap[active_edge]->property_fill_color().set_value("darkgreen"); |
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391 | |
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392 | //updating its properties |
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393 | mapwin.updateEdge(active_edge); |
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394 | } |
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395 | else |
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396 | { |
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397 | target_node=INVALID; |
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398 | std::cerr << "Loop edge is not yet implemented!" << std::endl; |
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399 | } |
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400 | } |
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401 | //clicked item was not a node. it could be an e.g. edge. we do not deal with it furthermore. |
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402 | else |
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403 | { |
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404 | target_item=NULL; |
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405 | } |
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406 | } |
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407 | } |
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408 | break; |
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409 | case GDK_BUTTON_RELEASE: |
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410 | isbutton=0; |
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411 | //we clear settings in two cases |
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412 | //1: the edge is ready (target_item has valid value) |
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413 | //2: the edge creation is cancelled with right button |
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414 | if((target_item)||(e->button.button==3)) |
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415 | { |
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416 | if(active_item) |
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417 | { |
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418 | *active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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419 | active_item=NULL; |
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420 | } |
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421 | if(target_item) |
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422 | { |
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423 | *target_item << Gnome::Canvas::Properties::fill_color("blue"); |
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424 | target_item=NULL; |
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425 | } |
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426 | active_node=INVALID; |
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427 | active_edge=INVALID; |
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428 | } |
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429 | break; |
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430 | default: |
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431 | break; |
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432 | } |
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433 | return false; |
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434 | } |
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435 | |
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436 | bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e) |
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437 | { |
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438 | switch(e->type) |
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439 | { |
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440 | case GDK_BUTTON_PRESS: |
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441 | //finding the clicked items |
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442 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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443 | active_item=(get_item_at(clicked_x, clicked_y)); |
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444 | active_node=INVALID; |
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445 | active_edge=INVALID; |
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446 | //was it a node? |
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447 | for (NodeIt i(mapstorage.graph); i!=INVALID; ++i) |
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448 | { |
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449 | if(nodesmap[i]==active_item) |
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450 | { |
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451 | active_node=i; |
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452 | } |
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453 | } |
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454 | //or was it an edge? |
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455 | if(active_node==INVALID) |
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456 | { |
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457 | for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i) |
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458 | { |
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459 | if(edgesmap[i]==active_item) |
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460 | { |
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461 | active_edge=i; |
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462 | } |
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463 | } |
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464 | } |
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465 | |
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466 | //recolor activated item |
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467 | if(active_item) |
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468 | { |
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469 | *active_item << Gnome::Canvas::Properties::fill_color("red"); |
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470 | } |
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471 | break; |
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472 | |
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473 | case GDK_BUTTON_RELEASE: |
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474 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
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475 | if(active_item) |
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476 | { |
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477 | //the cursor was not moved since pressing it |
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478 | if( active_item == ( get_item_at (clicked_x, clicked_y) ) ) |
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479 | { |
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480 | //a node was found |
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481 | if(active_node!=INVALID) |
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482 | { |
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483 | mapstorage.modified = true; |
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484 | |
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485 | //collecting edges to delete |
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486 | EdgeIt e; |
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487 | std::set<Graph::Edge> edges_to_delete; |
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488 | |
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489 | mapstorage.graph.firstOut(e,active_node); |
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490 | for(;e!=INVALID;mapstorage.graph.nextOut(e)) |
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491 | { |
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492 | edges_to_delete.insert(e); |
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493 | } |
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494 | |
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495 | mapstorage.graph.firstIn(e,active_node); |
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496 | for(;e!=INVALID;mapstorage.graph.nextIn(e)) |
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497 | { |
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498 | edges_to_delete.insert(e); |
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499 | } |
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500 | |
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501 | //deleting collected edges |
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502 | 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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503 | { |
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504 | deleteItem(*edge_set_it); |
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505 | } |
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506 | deleteItem(active_node); |
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507 | } |
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508 | //a simple edge was chosen |
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509 | else |
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510 | { |
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511 | deleteItem(active_edge); |
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512 | } |
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513 | } |
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514 | //pointer was moved, deletion is cancelled |
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515 | else |
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516 | { |
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517 | if(active_node!=INVALID) |
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518 | { |
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519 | *active_item << Gnome::Canvas::Properties::fill_color("blue"); |
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520 | } |
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521 | else |
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522 | { |
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523 | *active_item << Gnome::Canvas::Properties::fill_color("green"); |
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524 | } |
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525 | } |
---|
526 | } |
---|
527 | //reseting datas |
---|
528 | active_item=NULL; |
---|
529 | active_edge=INVALID; |
---|
530 | active_node=INVALID; |
---|
531 | break; |
---|
532 | |
---|
533 | case GDK_MOTION_NOTIFY: |
---|
534 | break; |
---|
535 | |
---|
536 | default: |
---|
537 | break; |
---|
538 | } |
---|
539 | return false; |
---|
540 | } |
---|
541 | |
---|
542 | bool GraphDisplayerCanvas::edgeMapEditEventHandler(GdkEvent* e) |
---|
543 | { |
---|
544 | if(actual_tool==EDGE_MAP_EDIT) |
---|
545 | { |
---|
546 | switch(e->type) |
---|
547 | { |
---|
548 | case GDK_KEY_PRESS: |
---|
549 | //for Escape or Enter hide the displayed widget |
---|
550 | { |
---|
551 | nodeMapEditEventHandler(e); |
---|
552 | break; |
---|
553 | } |
---|
554 | case GDK_BUTTON_PRESS: |
---|
555 | //If the click happened on an edge we place the entrywidget there and fill in the value of the activated map at that edge. |
---|
556 | { |
---|
557 | //for determine, whether it was an edge |
---|
558 | Graph::EdgeIt clicked_edge=INVALID; |
---|
559 | |
---|
560 | //find the activated item between texts |
---|
561 | active_item=(get_item_at(e->button.x, e->button.y)); |
---|
562 | for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i) |
---|
563 | { |
---|
564 | if(edgetextmap[i]==active_item) |
---|
565 | { |
---|
566 | clicked_edge=i; |
---|
567 | } |
---|
568 | } |
---|
569 | |
---|
570 | //if it was not between texts, search for it between edges |
---|
571 | if(clicked_edge==INVALID) |
---|
572 | { |
---|
573 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
---|
574 | active_item=(get_item_at(clicked_x, clicked_y)); |
---|
575 | |
---|
576 | for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i) |
---|
577 | { |
---|
578 | //at the same time only one can be active |
---|
579 | if((edgesmap[i]==active_item)||(edgetextmap[i]==active_item)) |
---|
580 | { |
---|
581 | clicked_edge=i; |
---|
582 | } |
---|
583 | } |
---|
584 | } |
---|
585 | //if it was really an edge... |
---|
586 | if(clicked_edge!=INVALID) |
---|
587 | { |
---|
588 | //If there is already edited edge, it has to be saved first |
---|
589 | if(entrywidget.is_visible()) |
---|
590 | { |
---|
591 | GdkEvent * generated=new GdkEvent(); |
---|
592 | generated->type=GDK_KEY_PRESS; |
---|
593 | ((GdkEventKey*)generated)->keyval=GDK_KP_Enter; |
---|
594 | entryWidgetChangeHandler(generated); |
---|
595 | } |
---|
596 | //If the previous value could be saved, we can go further, otherwise not |
---|
597 | if(!entrywidget.is_visible()) |
---|
598 | { |
---|
599 | //and there is activated map |
---|
600 | if(edgetextmap[clicked_edge]->property_text().get_value()!="") |
---|
601 | { |
---|
602 | //activate the general variable for it |
---|
603 | active_edge=clicked_edge; |
---|
604 | //delete visible widget if there is |
---|
605 | if(canvasentrywidget) |
---|
606 | { |
---|
607 | delete(canvasentrywidget); |
---|
608 | } |
---|
609 | |
---|
610 | //initialize the entry |
---|
611 | entrywidget.show(); |
---|
612 | |
---|
613 | //fill in the correct value |
---|
614 | entrywidget.set_text(edgetextmap[active_edge]->property_text().get_value()); |
---|
615 | |
---|
616 | //replace and resize the entry to the activated edge and put it in a Canvas::Widget to be able to display it on gdc |
---|
617 | xy<double> entry_coos; |
---|
618 | entry_coos.x=(edgetextmap[active_edge])->property_x().get_value(); |
---|
619 | entry_coos.x-=edgetextmap[active_edge]->property_text_width().get_value()/2; |
---|
620 | entry_coos.y=(edgetextmap[active_edge])->property_y().get_value(); |
---|
621 | entry_coos.y-=edgetextmap[active_edge]->property_text_height().get_value()*1.5/2; |
---|
622 | canvasentrywidget=new Gnome::Canvas::Widget(displayed_graph, entry_coos.x, entry_coos.y, entrywidget); |
---|
623 | canvasentrywidget->property_width().set_value(edgetextmap[active_edge]->property_text_width().get_value()*4); |
---|
624 | canvasentrywidget->property_height().set_value(edgetextmap[active_edge]->property_text_height().get_value()*1.5); |
---|
625 | |
---|
626 | //setting the focus to newly created widget |
---|
627 | parentwin->set_focus(entrywidget); |
---|
628 | parentwin->activate_focus(); |
---|
629 | } |
---|
630 | } |
---|
631 | } |
---|
632 | //if it was not an edge... |
---|
633 | else |
---|
634 | { |
---|
635 | //In this case the click did not happen on an edge |
---|
636 | //if there is visible entry we save the value in it |
---|
637 | //we pretend like an Enter was presse din the Entry widget |
---|
638 | GdkEvent * generated=new GdkEvent(); |
---|
639 | generated->type=GDK_KEY_PRESS; |
---|
640 | ((GdkEventKey*)generated)->keyval=GDK_KP_Enter; |
---|
641 | entryWidgetChangeHandler(generated); |
---|
642 | } |
---|
643 | break; |
---|
644 | } |
---|
645 | default: |
---|
646 | break; |
---|
647 | } |
---|
648 | } |
---|
649 | return false; |
---|
650 | } |
---|
651 | |
---|
652 | bool GraphDisplayerCanvas::nodeMapEditEventHandler(GdkEvent* e) |
---|
653 | { |
---|
654 | if(actual_tool==NODE_MAP_EDIT) |
---|
655 | { |
---|
656 | switch(e->type) |
---|
657 | { |
---|
658 | case GDK_KEY_PRESS: |
---|
659 | //for Escape or Enter hide the displayed widget |
---|
660 | { |
---|
661 | switch(((GdkEventKey*)e)->keyval) |
---|
662 | { |
---|
663 | case GDK_Escape: |
---|
664 | entrywidget.hide(); |
---|
665 | break; |
---|
666 | case GDK_Return: |
---|
667 | case GDK_KP_Enter: |
---|
668 | entrywidget.hide(); |
---|
669 | break; |
---|
670 | default: |
---|
671 | break; |
---|
672 | } |
---|
673 | |
---|
674 | break; |
---|
675 | } |
---|
676 | case GDK_BUTTON_PRESS: |
---|
677 | //If the click happened on an edge we place the entrywidget there and fill in the value of the activated map at that edge. |
---|
678 | { |
---|
679 | //for determine, whether it was a node |
---|
680 | Graph::NodeIt clicked_node=INVALID; |
---|
681 | |
---|
682 | //find the activated item between texts |
---|
683 | active_item=(get_item_at(e->button.x, e->button.y)); |
---|
684 | for (NodeIt i(mapstorage.graph); i!=INVALID; ++i) |
---|
685 | { |
---|
686 | //at the same time only one can be active |
---|
687 | if(nodetextmap[i]==active_item) |
---|
688 | { |
---|
689 | clicked_node=i; |
---|
690 | } |
---|
691 | } |
---|
692 | |
---|
693 | //if there was not, search for it between nodes |
---|
694 | if(clicked_node==INVALID) |
---|
695 | { |
---|
696 | window_to_world (e->button.x, e->button.y, clicked_x, clicked_y); |
---|
697 | active_item=(get_item_at(clicked_x, clicked_y)); |
---|
698 | |
---|
699 | for (NodeIt i(mapstorage.graph); i!=INVALID; ++i) |
---|
700 | { |
---|
701 | //at the same time only one can be active |
---|
702 | if(nodesmap[i]==active_item) |
---|
703 | { |
---|
704 | clicked_node=i; |
---|
705 | } |
---|
706 | } |
---|
707 | } |
---|
708 | //if it was really an edge... |
---|
709 | if(clicked_node!=INVALID) |
---|
710 | { |
---|
711 | //If there is already edited edge, it has to be saved first |
---|
712 | if(entrywidget.is_visible()) |
---|
713 | { |
---|
714 | GdkEvent * generated=new GdkEvent(); |
---|
715 | generated->type=GDK_KEY_PRESS; |
---|
716 | ((GdkEventKey*)generated)->keyval=GDK_KP_Enter; |
---|
717 | entryWidgetChangeHandler(generated); |
---|
718 | } |
---|
719 | //If the previous value could be saved, we can go further, otherwise not |
---|
720 | if(!entrywidget.is_visible()) |
---|
721 | { |
---|
722 | //and there is activated map |
---|
723 | if(nodetextmap[clicked_node]->property_text().get_value()!="") |
---|
724 | { |
---|
725 | //activate the general variable for it |
---|
726 | active_node=clicked_node; |
---|
727 | //delete visible widget if there is |
---|
728 | if(canvasentrywidget) |
---|
729 | { |
---|
730 | delete(canvasentrywidget); |
---|
731 | } |
---|
732 | |
---|
733 | //initialize the entry |
---|
734 | entrywidget.show(); |
---|
735 | |
---|
736 | //fill in the correct value |
---|
737 | entrywidget.set_text(nodetextmap[active_node]->property_text().get_value()); |
---|
738 | |
---|
739 | //replace and resize the entry to the activated node and put it in a Canvas::Widget to be able to display it on gdc |
---|
740 | xy<double> entry_coos; |
---|
741 | entry_coos.x=(nodetextmap[active_node])->property_x().get_value(); |
---|
742 | entry_coos.x-=nodetextmap[active_node]->property_text_width().get_value()/2; |
---|
743 | entry_coos.y=(nodetextmap[active_node])->property_y().get_value(); |
---|
744 | entry_coos.y-=nodetextmap[active_node]->property_text_height().get_value()*1.5/2; |
---|
745 | canvasentrywidget=new Gnome::Canvas::Widget(displayed_graph, entry_coos.x, entry_coos.y, entrywidget); |
---|
746 | canvasentrywidget->property_width().set_value(nodetextmap[active_node]->property_text_width().get_value()*4); |
---|
747 | canvasentrywidget->property_height().set_value(nodetextmap[active_node]->property_text_height().get_value()*1.5); |
---|
748 | } |
---|
749 | } |
---|
750 | } |
---|
751 | //if it was not an edge... |
---|
752 | else |
---|
753 | { |
---|
754 | //In this case the click did not happen on an edge |
---|
755 | //if there is visible entry we save the value in it |
---|
756 | //we pretend like an Enter was presse din the Entry widget |
---|
757 | GdkEvent * generated=new GdkEvent(); |
---|
758 | generated->type=GDK_KEY_PRESS; |
---|
759 | ((GdkEventKey*)generated)->keyval=GDK_KP_Enter; |
---|
760 | entryWidgetChangeHandler(generated); |
---|
761 | } |
---|
762 | break; |
---|
763 | } |
---|
764 | default: |
---|
765 | break; |
---|
766 | } |
---|
767 | } |
---|
768 | return false; |
---|
769 | } |
---|
770 | |
---|
771 | bool GraphDisplayerCanvas::entryWidgetChangeHandler(GdkEvent* e) |
---|
772 | { |
---|
773 | if(entrywidget.is_visible()) |
---|
774 | { |
---|
775 | if(e->type==GDK_KEY_PRESS) |
---|
776 | { |
---|
777 | switch(((GdkEventKey*)e)->keyval) |
---|
778 | { |
---|
779 | case GDK_Escape: |
---|
780 | entrywidget.hide(); |
---|
781 | break; |
---|
782 | case GDK_KP_Enter: |
---|
783 | case GDK_Return: |
---|
784 | { |
---|
785 | //these variables check whether the text in the entry is valid |
---|
786 | bool valid_double=true; |
---|
787 | int point_num=0; |
---|
788 | |
---|
789 | //getting the value from the entry and converting it to double |
---|
790 | Glib::ustring mapvalue_str = entrywidget.get_text(); |
---|
791 | |
---|
792 | char * mapvalue_ch=new char [mapvalue_str.length()]; |
---|
793 | for(int i=0;i<(int)(mapvalue_str.length());i++) |
---|
794 | { |
---|
795 | if(((mapvalue_str[i]<'0')||(mapvalue_str[i]>'9'))&&(mapvalue_str[i]!='.')) |
---|
796 | { |
---|
797 | valid_double=false; |
---|
798 | } |
---|
799 | else |
---|
800 | { |
---|
801 | if(mapvalue_str[i]=='.') |
---|
802 | { |
---|
803 | point_num++; |
---|
804 | } |
---|
805 | } |
---|
806 | mapvalue_ch[i]=mapvalue_str[i]; |
---|
807 | } |
---|
808 | |
---|
809 | //if the text in the entry was correct |
---|
810 | if((point_num<=1)&&(valid_double)) |
---|
811 | { |
---|
812 | double mapvalue_d=atof(mapvalue_ch); |
---|
813 | |
---|
814 | //reconvert the double to string for the correct format |
---|
815 | std::ostringstream ostr; |
---|
816 | ostr << mapvalue_d; |
---|
817 | |
---|
818 | //save the value to the correct place |
---|
819 | switch(actual_tool) |
---|
820 | { |
---|
821 | case EDGE_MAP_EDIT: |
---|
822 | edgetextmap[active_edge]->property_text().set_value(ostr.str()); |
---|
823 | (*(mapstorage.edgemap_storage)[edgemap_to_edit])[active_edge]=mapvalue_d; |
---|
824 | mapwin.updateEdge(active_edge); |
---|
825 | break; |
---|
826 | case NODE_MAP_EDIT: |
---|
827 | nodetextmap[active_node]->property_text().set_value(ostr.str()); |
---|
828 | (*(mapstorage.nodemap_storage)[nodemap_to_edit])[active_node]=mapvalue_d; |
---|
829 | mapwin.updateNode(active_node); |
---|
830 | break; |
---|
831 | default: |
---|
832 | break; |
---|
833 | } |
---|
834 | entrywidget.hide(); |
---|
835 | } |
---|
836 | //the text in the entry was not correct for a double |
---|
837 | else |
---|
838 | { |
---|
839 | std::cerr << "ERROR: only handling of double values is implemented yet!" << std::endl; |
---|
840 | } |
---|
841 | |
---|
842 | break; |
---|
843 | } |
---|
844 | default: |
---|
845 | break; |
---|
846 | } |
---|
847 | } |
---|
848 | } |
---|
849 | return false; |
---|
850 | } |
---|
851 | |
---|
852 | void GraphDisplayerCanvas::deleteItem(NodeIt node_to_delete) |
---|
853 | { |
---|
854 | delete(nodetextmap[node_to_delete]); |
---|
855 | delete(nodesmap[node_to_delete]); |
---|
856 | mapstorage.graph.erase(node_to_delete); |
---|
857 | } |
---|
858 | |
---|
859 | void GraphDisplayerCanvas::deleteItem(EdgeIt edge_to_delete) |
---|
860 | { |
---|
861 | delete(edgetextmap[edge_to_delete]); |
---|
862 | delete(edgesmap[edge_to_delete]); |
---|
863 | mapstorage.graph.erase(edge_to_delete); |
---|
864 | } |
---|
865 | |
---|
866 | void GraphDisplayerCanvas::deleteItem(Graph::Edge edge_to_delete) |
---|
867 | { |
---|
868 | delete(edgetextmap[edge_to_delete]); |
---|
869 | delete(edgesmap[edge_to_delete]); |
---|
870 | mapstorage.graph.erase(edge_to_delete); |
---|
871 | } |
---|
872 | |
---|
873 | void GraphDisplayerCanvas::textReposition(xy<double> new_place) |
---|
874 | { |
---|
875 | new_place+=(xy<double>(10,10)); |
---|
876 | edgetextmap[forming_edge]->property_x().set_value(new_place.x); |
---|
877 | edgetextmap[forming_edge]->property_y().set_value(new_place.y); |
---|
878 | } |
---|
879 | |
---|
880 | void GraphDisplayerCanvas::toggleEdgeActivity(BrokenEdge* active_bre, bool on) |
---|
881 | { |
---|
882 | if(on) |
---|
883 | { |
---|
884 | if(forming_edge!=INVALID) |
---|
885 | { |
---|
886 | std::cerr << "ERROR!!!! Valid edge found!" << std::endl; |
---|
887 | } |
---|
888 | else |
---|
889 | { |
---|
890 | for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i) |
---|
891 | { |
---|
892 | if(edgesmap[i]==active_bre) |
---|
893 | { |
---|
894 | forming_edge=i; |
---|
895 | } |
---|
896 | } |
---|
897 | } |
---|
898 | } |
---|
899 | else |
---|
900 | { |
---|
901 | if(forming_edge!=INVALID) |
---|
902 | { |
---|
903 | forming_edge=INVALID; |
---|
904 | } |
---|
905 | else |
---|
906 | { |
---|
907 | std::cerr << "ERROR!!!! Invalid edge found!" << std::endl; |
---|
908 | } |
---|
909 | } |
---|
910 | |
---|
911 | } |
---|
912 | |
---|
913 | int GraphDisplayerCanvas::addNewEdgeMap(double default_value, std::string mapname) |
---|
914 | { |
---|
915 | //create the new map |
---|
916 | Graph::EdgeMap<double> * emptr=new Graph::EdgeMap<double> (mapstorage.graph, default_value); |
---|
917 | |
---|
918 | //if addition was not successful addEdgeMap returns one. |
---|
919 | //cause can be that there is already a map named like the new one |
---|
920 | if(mapstorage.addEdgeMap(mapname,emptr)) |
---|
921 | { |
---|
922 | return 1; |
---|
923 | } |
---|
924 | |
---|
925 | |
---|
926 | //add it to the list of the displayable maps |
---|
927 | mapwin.registerNewEdgeMap(mapname); |
---|
928 | |
---|
929 | //display it |
---|
930 | changeEdgeText(mapname); |
---|
931 | |
---|
932 | return 0; |
---|
933 | } |
---|
934 | |
---|
935 | int GraphDisplayerCanvas::addNewNodeMap(double default_value, std::string mapname) |
---|
936 | { |
---|
937 | //create the new map |
---|
938 | Graph::NodeMap<double> * emptr=new Graph::NodeMap<double> (mapstorage.graph,default_value); |
---|
939 | |
---|
940 | //if addition was not successful addNodeMap returns one. |
---|
941 | //cause can be that there is already a map named like the new one |
---|
942 | if(mapstorage.addNodeMap(mapname,emptr)) |
---|
943 | { |
---|
944 | return 1; |
---|
945 | } |
---|
946 | |
---|
947 | //add it to the list of the displayable maps |
---|
948 | mapwin.registerNewNodeMap(mapname); |
---|
949 | |
---|
950 | //display it |
---|
951 | changeNodeText(mapname); |
---|
952 | |
---|
953 | return 0; |
---|
954 | } |
---|
955 | |
---|