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