lemon-0.x: comparison gui/graph_displayer

equal deleted inserted replaced

-:104651a2a1d5
+:b232cac441bc
 #include <graph_displayer_canvas.h>
+#include <math.h>
 GraphDisplayerCanvas::GraphDisplayerCanvas(Graph & gr, CoordinatesMap & cm, MapStorage & ms):g(gr),nodesmap(g),edgesmap(g),edgetextmap(g),displayed_graph(*(root()), 0, 0),mapstorage(ms),isbutton(false),active_item(NULL)
 {
+//first edges are drawn, to hide joining with nodes later
 for (EdgeIt i(g); i!=INVALID; ++i)
 {
+//drawing green lines, coordinates are from cm
 Gnome::Canvas::Points coos;
 coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
 coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
 edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
 *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
 edgesmap[i]->property_width_pixels().set_value(10);
+//initializing edge-text as well, to empty string
 double x1, x2, y1, y2;
 edgesmap[i]->get_bounds(x1, y1, x2, y2);
 edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
 edgetextmap[i]->property_fill_color().set_value("black");
 }
+//afterwards nodes come to be drawn
 NodeIt i(g);
 int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
 for (; i!=INVALID; ++i)
 {
+//minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen)
 if(cm[i].x>maxx)maxx=(int)cm[i].x;
 if(cm[i].y>maxy)maxy=(int)cm[i].y;
 if(cm[i].x<minx)minx=(int)cm[i].x;
 if(cm[i].y<miny)miny=(int)cm[i].y;
+//drawing bule nodes, with black line around them
 nodesmap[i]=new Gnome::Canvas::Ellipse(displayed_graph, cm[i].x-20, cm[i].y-20, cm[i].x+20, cm[i].y+20);
 *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
 *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
 (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
 }
+//setting zoom to be able to see the whole graph on the canvas
 double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
 double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
 set_pixels_per_unit((biggest_x>biggest_y)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
 std::cout<<abs(maxx)<<" "<<abs(minx)<<" big x "<<biggest_x<<" "<<abs(maxy)<<" "<<abs(miny)<<" big y "<<biggest_y<<std::endl;
 }
 GraphDisplayerCanvas::~GraphDisplayerCanvas()
 {
-Graph::NodeMap <int> id(g);
-Graph::NodeMap <double> xc(g);
+//writing out the end state of the graph
-Graph::NodeMap <double> yc(g);
+//\todo all the maps has to be write out!
-int j=1;
+Graph::NodeMap <int> id(g);
+Graph::NodeMap <double> xc(g);
-for (NodeIt i(g); i!=INVALID; ++i)
+Graph::NodeMap <double> yc(g);
-{
-double x1,y1,x2,y2;
+int j=1;
-nodesmap[i]->get_bounds(x1, y1, x2, y2);
+for (NodeIt i(g); i!=INVALID; ++i)
-id[i]=j++;
+{
-xc[i]=(x1+x2)/2;
+double x1,y1,x2,y2;
-yc[i]=(y1+y2)/2;
+nodesmap[i]->get_bounds(x1, y1, x2, y2);
-}
+id[i]=j++;
-GraphWriter<Graph> writer(std::cout,g);
+xc[i]=(x1+x2)/2;
+yc[i]=(y1+y2)/2;
-writer.writeNodeMap("id", id);
+}
-writer.writeNodeMap("coordinates_x", xc);
-writer.writeNodeMap("coordinates_y", yc);
+GraphWriter<Graph> writer(std::cout,g);
-writer.run();
+writer.writeNodeMap("id", id);
+writer.writeNodeMap("coordinates_x", xc);
+writer.writeNodeMap("coordinates_y", yc);
+writer.run();
 }
 int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
 {
 for (EdgeIt i(g); i!=INVALID; ++i)
 return 0;
 };
 int GraphDisplayerCanvas::changeColor (std::string mapname)
 {
+//function maps the range of the maximum and
+//the minimum of the nodemap to the range of
+//green in RGB
 for (EdgeIt i(g); i!=INVALID; ++i)
 {
 double w=(*(mapstorage.edgemap_storage)[mapname])[i];
 double max=mapstorage.maxOfEdgeMap(mapname);
 double min=mapstorage.minOfEdgeMap(mapname);
 return 0;
 };
 int GraphDisplayerCanvas::changeText (std::string mapname)
 {
+//the number in the map will be written on the edge
+//EXCEPT when the name of the map is Text, because
+//in that case empty string will be written, because
+//that is the deleter map
+//\todo isn't it a bit woodcutter?
 for (EdgeIt i(g); i!=INVALID; ++i)
 {
 if(mapname!="Text")
 {
 double number=(*(mapstorage.edgemap_storage)[mapname])[i];
 };
 int GraphDisplayerCanvas::rezoom ()
 {
+//searches for the minimum and the maximum
+//value of the coordinates of the nodes to
+//set the pixel rpo unit to a value to be
+//able to see the whole graph in the canvas
+//\todo does not work properly
 double x1, x2, y1, y2;
 int x,y;
 NodeIt i(g);
 nodesmap[i]->get_bounds(x1, y1, x2, y2);
 set_pixels_per_unit((biggest_x-WIN_WIDTH>biggest_y-WIN_HEIGHT)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
 return 0;
 };
-///This function moves only one node of displayed_graph,
-///but recalculate the location of weight point,
-///and also redraw the sides of the planefigure.
 bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n)
 {
 switch(e->type)
 {
 case GDK_BUTTON_PRESS:
+//we mark the location of the event to be able to calculate parameters of dragging
 clicked_x=e->button.x;
 clicked_y=e->button.y;
 active_item=(get_item_at(e->button.x, e->button.y));
 isbutton=true;
 break;
 case GDK_BUTTON_RELEASE:
 isbutton=false;
 active_item=NULL;
 break;
 case GDK_MOTION_NOTIFY:
+//we only have to do sg. if the mouse button is pressed
 if(isbutton)
 {
+	//new coordinates will be the old values,
+	//because the item will be moved to the
+	//new coordinate therefore the new movement
+	//has to be calculated from here
 double dx=e->motion.x-clicked_x;
 double dy=e->motion.y-clicked_y;
 active_item->move(dx, dy);
 clicked_x=e->motion.x;
 clicked_y=e->motion.y;
+	//all the edges connected to the moved point has to be redrawn
 EdgeIt e;
 g.firstOut(e,n);
 for(;e!=INVALID;g.nextOut(e))
 {
 Gnome::Canvas::Points coos;
 double x1, x2, y1, y2;

changeset 1440	3d2e3cfb2a6c
parent 1435	8e85e6bbefdf
child 1441	fd4b6f6d592a