[1497] | 1 | #include <broken_edge.h> |
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[1499] | 2 | #include <math.h> |
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[1497] | 3 | |
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[1501] | 4 | BrokenEdge::BrokenEdge(Gnome::Canvas::Group & g, Gnome::Canvas::Points p, GraphDisplayerCanvas & gc) : Line(g), gdc(gc), isbutton(false) |
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[1497] | 5 | { |
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[1499] | 6 | my_points=new Gnome::Art::Point[3]; |
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| 7 | |
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| 8 | arrow=new Gnome::Canvas::Polygon(g); |
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| 9 | *arrow << Gnome::Canvas::Properties::fill_color("red"); |
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[1524] | 10 | arrow->signal_event().connect(sigc::mem_fun(*this, &BrokenEdge::edgeFormerEventHandler)); |
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| 11 | setPoints(p); |
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[1499] | 12 | } |
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| 13 | |
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| 14 | BrokenEdge::~BrokenEdge() |
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| 15 | { |
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| 16 | if(arrow)delete(arrow); |
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| 17 | } |
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| 18 | |
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[1524] | 19 | void BrokenEdge::setPoints(Gnome::Canvas::Points p, bool move) |
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[1499] | 20 | { |
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| 21 | bool set_arrow=false; |
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[1500] | 22 | if(!move) |
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[1497] | 23 | { |
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[1500] | 24 | if(p.size()==2) |
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| 25 | { |
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| 26 | set_arrow=true; |
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| 27 | Gnome::Canvas::Points points_with_center; |
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| 28 | points_with_center.push_back(my_points[0]=p[0]); |
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| 29 | points_with_center.push_back(my_points[1]=Gnome::Art::Point( (p[0].get_x()+p[1].get_x())/2+0 , (p[0].get_y()+p[1].get_y())/2 )+0 ); |
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| 30 | points_with_center.push_back(my_points[2]=p[1]); |
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| 31 | property_points().set_value(points_with_center); |
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| 32 | } |
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| 33 | if(p.size()==3) |
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| 34 | { |
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| 35 | set_arrow=true; |
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| 36 | property_points().set_value(p); |
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| 37 | for(int i=0;i<3;i++) |
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| 38 | { |
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| 39 | my_points[i]=p[i]; |
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| 40 | } |
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| 41 | } |
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| 42 | } |
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| 43 | else |
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[1499] | 44 | { |
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[1500] | 45 | if(p.size()==2) |
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[1499] | 46 | { |
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[1500] | 47 | Gnome::Canvas::Points points; |
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| 48 | my_points[0]=p[0]; |
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| 49 | my_points[2]=p[1]; |
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| 50 | for(int i=0;i<3;i++) |
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| 51 | { |
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| 52 | points.push_back(my_points[i]); |
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| 53 | } |
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| 54 | property_points().set_value(points); |
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[1499] | 55 | } |
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| 56 | } |
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| 57 | |
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| 58 | if(set_arrow) |
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| 59 | { |
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| 60 | //calculating coordinates of the direction indicator arrow |
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| 61 | |
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| 62 | xy<gdouble> target( my_points[2].get_x(), my_points[2].get_y() ); |
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| 63 | xy<gdouble> center( my_points[1].get_x(), my_points[1].get_y() ); |
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| 64 | |
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| 65 | xy<gdouble> unit_vector_in_dir(target-center); |
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| 66 | // std::cout << target << " - " << center << " = " << unit_vector_in_dir << " / " <<unit_vector_in_dir.normSquare() ; |
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| 67 | unit_vector_in_dir/=sqrt( unit_vector_in_dir.normSquare() ); |
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| 68 | // std::cout << " = " << unit_vector_in_dir << std::endl; |
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| 69 | |
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| 70 | xy<gdouble> unit_norm_vector(0-unit_vector_in_dir.y, unit_vector_in_dir.x); |
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| 71 | // std::cout << unit_norm_vector << std::endl; |
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| 72 | |
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| 73 | { |
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[1504] | 74 | // /\ // top |
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| 75 | // / \ // |
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| 76 | // - - // c(enter)l(eft), ccl, ccr, cr |
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| 77 | // || // |
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| 78 | // || // b(ottom)l, br |
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[1499] | 79 | } |
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| 80 | |
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| 81 | double size=3; |
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| 82 | |
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| 83 | xy<gdouble> bl (center - unit_vector_in_dir * 3 * size + unit_norm_vector * size ); |
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| 84 | xy<gdouble> br (center - unit_vector_in_dir * 3 * size - unit_norm_vector * size ); |
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| 85 | xy<gdouble> ccl(center + unit_vector_in_dir * size + unit_norm_vector * size ); |
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| 86 | xy<gdouble> ccr(center + unit_vector_in_dir * size - unit_norm_vector * size ); |
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| 87 | xy<gdouble> cl (center + unit_vector_in_dir * size + unit_norm_vector * 2 * size ); |
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| 88 | xy<gdouble> cr (center + unit_vector_in_dir * size - unit_norm_vector * 2 * size ); |
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| 89 | xy<gdouble> top(center + unit_vector_in_dir * 3 * size); |
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| 90 | |
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| 91 | // std::cout << bl << " " << br << " " << ccl << " " << ccr << " " << cl << " " << cr << " " << top << std::endl; |
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| 92 | |
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| 93 | Gnome::Canvas::Points arrow_points; |
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| 94 | arrow_points.push_back(Gnome::Art::Point( bl.x , bl.y ) ); |
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| 95 | arrow_points.push_back(Gnome::Art::Point( br.x , br.y ) ); |
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| 96 | arrow_points.push_back(Gnome::Art::Point( ccr.x, ccr.y ) ); |
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| 97 | arrow_points.push_back(Gnome::Art::Point( cr.x , cr.y ) ); |
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| 98 | arrow_points.push_back(Gnome::Art::Point( top.x, top.y ) ); |
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| 99 | arrow_points.push_back(Gnome::Art::Point( cl.x , cl.y ) ); |
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| 100 | arrow_points.push_back(Gnome::Art::Point( ccl.x, ccl.y ) ); |
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| 101 | |
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| 102 | arrow->property_points().set_value(arrow_points); |
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[1497] | 103 | } |
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| 104 | } |
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[1499] | 105 | |
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[1524] | 106 | bool BrokenEdge::edgeFormerEventHandler(GdkEvent* e) |
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[1499] | 107 | { |
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| 108 | switch(e->type) |
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| 109 | { |
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| 110 | case GDK_BUTTON_PRESS: |
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| 111 | //we mark the location of the event to be able to calculate parameters of dragging |
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[1524] | 112 | if(gdc.getActualTool()!=CREATE_NODE) |
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[1501] | 113 | { |
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[1524] | 114 | gdc.toggleEdgeActivity(this, true); |
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[1501] | 115 | clicked_x=e->button.x; |
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| 116 | clicked_y=e->button.y; |
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| 117 | isbutton=true; |
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| 118 | } |
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[1499] | 119 | break; |
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| 120 | case GDK_BUTTON_RELEASE: |
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[1524] | 121 | if(gdc.getActualTool()!=CREATE_NODE) |
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[1505] | 122 | { |
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[1524] | 123 | gdc.toggleEdgeActivity(this, false); |
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[1505] | 124 | isbutton=false; |
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| 125 | } |
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[1499] | 126 | break; |
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| 127 | case GDK_MOTION_NOTIFY: |
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| 128 | //we only have to do sg. if the mouse button is pressed |
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| 129 | if(isbutton) |
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| 130 | { |
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| 131 | //new coordinates will be the old values, |
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| 132 | //because the item will be moved to the |
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| 133 | //new coordinate therefore the new movement |
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| 134 | //has to be calculated from here |
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| 135 | |
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| 136 | double dx=e->motion.x-clicked_x; |
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| 137 | double dy=e->motion.y-clicked_y; |
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| 138 | |
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| 139 | Gnome::Canvas::Points points_new; |
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| 140 | |
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| 141 | points_new.push_back(my_points[0]); |
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| 142 | points_new.push_back(my_points[1]=Gnome::Art::Point(my_points[1].get_x()+dx,my_points[1].get_y()+dy)); |
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| 143 | points_new.push_back(my_points[2]); |
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| 144 | |
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[1524] | 145 | setPoints(points_new); |
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| 146 | gdc.textReposition(xy<double>(my_points[1].get_x(),my_points[1].get_y())); |
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[1499] | 147 | |
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| 148 | clicked_x=e->motion.x; |
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| 149 | clicked_y=e->motion.y; |
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| 150 | |
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| 151 | } |
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| 152 | default: break; |
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| 153 | } |
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| 154 | |
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| 155 | return true; |
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| 156 | } |
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[1505] | 157 | |
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[1524] | 158 | xy<double> BrokenEdge::getArrowPos() |
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[1505] | 159 | { |
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| 160 | xy<double> ret_val(my_points[1].get_x(),my_points[1].get_y()); |
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| 161 | return ret_val; |
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| 162 | } |
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