hegyi@1819: #include "graph_displayer_canvas.h" alpar@1632: #include <cmath> hegyi@1497: ladanyi@1860: GraphDisplayerCanvas::BrokenEdge::BrokenEdge(Gnome::Canvas::Group & g, Edge _edge, GraphDisplayerCanvas & gc) : Line(g), edge(_edge), gdc(gc), isbutton(false) hegyi@1497: { hegyi@1499: arrow=new Gnome::Canvas::Polygon(g); hegyi@1499: *arrow << Gnome::Canvas::Properties::fill_color("red"); hegyi@1819: arrow->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::BrokenEdge::edgeFormerEventHandler)); ladanyi@1645: arrow->lower_to_bottom(); ladanyi@1860: draw(); hegyi@1499: } hegyi@1499: hegyi@1819: GraphDisplayerCanvas::BrokenEdge::~BrokenEdge() hegyi@1499: { hegyi@1499: if(arrow)delete(arrow); hegyi@1499: } hegyi@1499: ladanyi@1860: void GraphDisplayerCanvas::BrokenEdge::draw() hegyi@1499: { ladanyi@1860: MapStorage& ms = gdc.mytab.mapstorage; ladanyi@1860: ladanyi@1860: // update the edge ladanyi@1860: { ladanyi@1860: Gnome::Canvas::Points points; ladanyi@1860: Node source = ms.graph.source(edge); ladanyi@1860: Node target = ms.graph.target(edge); ladanyi@1860: points.push_back(Gnome::Art::Point(ms.coords[source].x, ladanyi@1860: ms.coords[source].y)); ladanyi@1860: points.push_back(Gnome::Art::Point(ms.arrow_pos[edge].x, ladanyi@1860: ms.arrow_pos[edge].y)); ladanyi@1860: points.push_back(Gnome::Art::Point(ms.coords[target].x, ladanyi@1860: ms.coords[target].y)); ladanyi@1860: property_points().set_value(points); ladanyi@1860: } ladanyi@1860: ladanyi@1860: // update the arrow ladanyi@1860: { ladanyi@1860: //calculating coordinates of the direction indicator arrow ladanyi@1860: XY target(ms.coords[ms.graph.target(edge)]); ladanyi@1860: XY center(ms.arrow_pos[edge]); ladanyi@1860: ladanyi@1860: XY unit_vector_in_dir(target-center); ladanyi@1860: double length=sqrt( unit_vector_in_dir.normSquare() ); ladanyi@1860: ladanyi@1860: // std::cout << target << " - " << center << " = " << unit_vector_in_dir << " / " <<unit_vector_in_dir.normSquare() ; ladanyi@1860: unit_vector_in_dir/=length; ladanyi@1860: // std::cout << " = " << unit_vector_in_dir << std::endl; ladanyi@1860: ladanyi@1860: XY unit_norm_vector(0-unit_vector_in_dir.y, unit_vector_in_dir.x); ladanyi@1860: // std::cout << unit_norm_vector << std::endl; ladanyi@1860: ladanyi@1860: { ladanyi@1860: // /\ // top ladanyi@1860: // / \ // ladanyi@1860: // - - // c(enter)l(eft), ccl, ccr, cr ladanyi@1860: // || // ladanyi@1860: // || // b(ottom)l, br hegyi@1500: } hegyi@1601: ladanyi@1860: double size=3; hegyi@1601: ladanyi@1860: XY bl (center - unit_vector_in_dir * 3 * size + unit_norm_vector * size ); ladanyi@1860: XY br (center - unit_vector_in_dir * 3 * size - unit_norm_vector * size ); ladanyi@1860: XY ccl(center + unit_vector_in_dir * size + unit_norm_vector * size ); ladanyi@1860: XY ccr(center + unit_vector_in_dir * size - unit_norm_vector * size ); ladanyi@1860: XY cl (center + unit_vector_in_dir * size + unit_norm_vector * 2 * size ); ladanyi@1860: XY cr (center + unit_vector_in_dir * size - unit_norm_vector * 2 * size ); ladanyi@1860: XY top(center + unit_vector_in_dir * 3 * size); hegyi@1601: ladanyi@1860: //std::cout << bl << " " << br << " " << ccl << " " << ccr << " " << cl << " " << cr << " " << top << std::endl; hegyi@1601: ladanyi@1860: Gnome::Canvas::Points arrow_points; ladanyi@1860: arrow_points.push_back(Gnome::Art::Point( bl.x , bl.y ) ); ladanyi@1860: arrow_points.push_back(Gnome::Art::Point( br.x , br.y ) ); ladanyi@1860: arrow_points.push_back(Gnome::Art::Point( ccr.x, ccr.y ) ); ladanyi@1860: arrow_points.push_back(Gnome::Art::Point( cr.x , cr.y ) ); ladanyi@1860: arrow_points.push_back(Gnome::Art::Point( top.x, top.y ) ); ladanyi@1860: arrow_points.push_back(Gnome::Art::Point( cl.x , cl.y ) ); ladanyi@1860: arrow_points.push_back(Gnome::Art::Point( ccl.x, ccl.y ) ); hegyi@1601: ladanyi@1860: arrow->property_points().set_value(arrow_points); ladanyi@1860: } hegyi@1497: } hegyi@1499: hegyi@1819: bool GraphDisplayerCanvas::BrokenEdge::edgeFormerEventHandler(GdkEvent* e) hegyi@1499: { hegyi@1499: switch(e->type) hegyi@1499: { hegyi@1499: case GDK_BUTTON_PRESS: hegyi@1499: //we mark the location of the event to be able to calculate parameters of dragging hegyi@1524: if(gdc.getActualTool()!=CREATE_NODE) hegyi@1501: { hegyi@1524: gdc.toggleEdgeActivity(this, true); hegyi@1501: clicked_x=e->button.x; hegyi@1501: clicked_y=e->button.y; hegyi@1501: isbutton=true; hegyi@1501: } hegyi@1499: break; hegyi@1499: case GDK_BUTTON_RELEASE: hegyi@1524: if(gdc.getActualTool()!=CREATE_NODE) hegyi@1505: { hegyi@1524: gdc.toggleEdgeActivity(this, false); hegyi@1505: isbutton=false; hegyi@1505: } hegyi@1499: break; hegyi@1499: case GDK_MOTION_NOTIFY: hegyi@1499: //we only have to do sg. if the mouse button is pressed hegyi@1499: if(isbutton) hegyi@1499: { hegyi@1499: //new coordinates will be the old values, hegyi@1499: //because the item will be moved to the hegyi@1499: //new coordinate therefore the new movement hegyi@1499: //has to be calculated from here hegyi@1499: hegyi@1499: double dx=e->motion.x-clicked_x; hegyi@1499: double dy=e->motion.y-clicked_y; hegyi@1499: hegyi@1499: Gnome::Canvas::Points points_new; hegyi@1499: ladanyi@1860: gdc.mytab.mapstorage.arrow_pos.set(edge, gdc.mytab.mapstorage.arrow_pos[edge] + XY(dx, dy)); hegyi@1499: ladanyi@1860: draw(); ladanyi@1860: gdc.textReposition(gdc.mytab.mapstorage.arrow_pos[edge]); hegyi@1499: hegyi@1499: clicked_x=e->motion.x; hegyi@1499: clicked_y=e->motion.y; hegyi@1499: hegyi@1499: } hegyi@1499: default: break; hegyi@1499: } hegyi@1499: hegyi@1499: return true; hegyi@1499: }