1 | #include <graph_displayer_canvas.h>
|
---|
2 | #include <math.h>
|
---|
3 |
|
---|
4 | 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)
|
---|
5 | {
|
---|
6 | //set_center_scroll_region(true);
|
---|
7 |
|
---|
8 | //first edges are drawn, to hide joining with nodes later
|
---|
9 |
|
---|
10 | for (EdgeIt i(g); i!=INVALID; ++i)
|
---|
11 | {
|
---|
12 |
|
---|
13 | //drawing green lines, coordinates are from cm
|
---|
14 |
|
---|
15 | Gnome::Canvas::Points coos;
|
---|
16 | coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
|
---|
17 | coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
|
---|
18 |
|
---|
19 | edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
|
---|
20 | *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
|
---|
21 | edgesmap[i]->property_width_pixels().set_value(10);
|
---|
22 |
|
---|
23 | //initializing edge-text as well, to empty string
|
---|
24 |
|
---|
25 | double x1, x2, y1, y2;
|
---|
26 | edgesmap[i]->get_bounds(x1, y1, x2, y2);
|
---|
27 |
|
---|
28 | edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
|
---|
29 | edgetextmap[i]->property_fill_color().set_value("black");
|
---|
30 | }
|
---|
31 |
|
---|
32 | //afterwards nodes come to be drawn
|
---|
33 |
|
---|
34 | NodeIt i(g);
|
---|
35 | int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
|
---|
36 |
|
---|
37 | for (; i!=INVALID; ++i)
|
---|
38 | {
|
---|
39 | //minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen)
|
---|
40 |
|
---|
41 | if(cm[i].x>maxx)maxx=(int)cm[i].x;
|
---|
42 | if(cm[i].y>maxy)maxy=(int)cm[i].y;
|
---|
43 | if(cm[i].x<minx)minx=(int)cm[i].x;
|
---|
44 | if(cm[i].y<miny)miny=(int)cm[i].y;
|
---|
45 |
|
---|
46 | //drawing bule nodes, with black line around them
|
---|
47 |
|
---|
48 | nodesmap[i]=new Gnome::Canvas::Ellipse(displayed_graph, cm[i].x-20, cm[i].y-20, cm[i].x+20, cm[i].y+20);
|
---|
49 | *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
|
---|
50 | *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
|
---|
51 | (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
|
---|
52 | }
|
---|
53 |
|
---|
54 | /*
|
---|
55 | //setting zoom to be able to see the whole graph on the canvas
|
---|
56 |
|
---|
57 | double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
|
---|
58 | double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
|
---|
59 |
|
---|
60 | set_pixels_per_unit((biggest_x>biggest_y)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
|
---|
61 | std::cout<<abs(maxx)<<" "<<abs(minx)<<" big x "<<biggest_x<<" "<<abs(maxy)<<" "<<abs(miny)<<" big y "<<biggest_y<<std::endl;
|
---|
62 | std::cout<<maxx<<" "<<minx<<" big x "<<biggest_x<<" "<<maxy<<" "<<miny<<" big y "<<biggest_y<<std::endl;
|
---|
63 | std::cout<<"dx "<<(maxx-minx)<<" dy "<<(maxy-miny)<<" xrate "<<((maxx-minx)/WIN_WIDTH)<<" yrate "<<((maxy-miny)/WIN_HEIGHT)<<std::endl;
|
---|
64 | */
|
---|
65 | updateScrollRegion();
|
---|
66 | }
|
---|
67 |
|
---|
68 | GraphDisplayerCanvas::~GraphDisplayerCanvas()
|
---|
69 | {
|
---|
70 |
|
---|
71 | //writing out the end state of the graph
|
---|
72 | //\todo all the maps has to be write out!
|
---|
73 |
|
---|
74 | Graph::NodeMap <int> id(g);
|
---|
75 | Graph::NodeMap <double> xc(g);
|
---|
76 | Graph::NodeMap <double> yc(g);
|
---|
77 |
|
---|
78 | int j=1;
|
---|
79 |
|
---|
80 | for (NodeIt i(g); i!=INVALID; ++i)
|
---|
81 | {
|
---|
82 | double x1,y1,x2,y2;
|
---|
83 | nodesmap[i]->get_bounds(x1, y1, x2, y2);
|
---|
84 |
|
---|
85 | id[i]=j++;
|
---|
86 | xc[i]=(x1+x2)/2;
|
---|
87 | yc[i]=(y1+y2)/2;
|
---|
88 | }
|
---|
89 |
|
---|
90 | GraphWriter<Graph> writer(std::cout,g);
|
---|
91 |
|
---|
92 | writer.writeNodeMap("id", id);
|
---|
93 | writer.writeNodeMap("coordinates_x", xc);
|
---|
94 | writer.writeNodeMap("coordinates_y", yc);
|
---|
95 | writer.run();
|
---|
96 | }
|
---|
97 |
|
---|
98 | int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
|
---|
99 | {
|
---|
100 | for (EdgeIt i(g); i!=INVALID; ++i)
|
---|
101 | {
|
---|
102 | int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
|
---|
103 | edgesmap[i]->property_width_pixels().set_value(w);
|
---|
104 | }
|
---|
105 | return 0;
|
---|
106 | };
|
---|
107 |
|
---|
108 | int GraphDisplayerCanvas::changeColor (std::string mapname)
|
---|
109 | {
|
---|
110 |
|
---|
111 | //function maps the range of the maximum and
|
---|
112 | //the minimum of the nodemap to the range of
|
---|
113 | //green in RGB
|
---|
114 |
|
---|
115 | for (EdgeIt i(g); i!=INVALID; ++i)
|
---|
116 | {
|
---|
117 | double w=(*(mapstorage.edgemap_storage)[mapname])[i];
|
---|
118 | double max=mapstorage.maxOfEdgeMap(mapname);
|
---|
119 | double min=mapstorage.minOfEdgeMap(mapname);
|
---|
120 |
|
---|
121 | //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
|
---|
122 | Gdk::Color color;
|
---|
123 | if(max!=min)
|
---|
124 | {
|
---|
125 | color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
|
---|
126 | }
|
---|
127 | else
|
---|
128 | {
|
---|
129 | color.set_rgb_p (0, 100, 0);
|
---|
130 | }
|
---|
131 |
|
---|
132 | edgesmap[i]->property_fill_color_gdk().set_value(color);
|
---|
133 | }
|
---|
134 | return 0;
|
---|
135 | };
|
---|
136 |
|
---|
137 | int GraphDisplayerCanvas::changeText (std::string mapname)
|
---|
138 | {
|
---|
139 |
|
---|
140 | //the number in the map will be written on the edge
|
---|
141 | //EXCEPT when the name of the map is Text, because
|
---|
142 | //in that case empty string will be written, because
|
---|
143 | //that is the deleter map
|
---|
144 | //\todo isn't it a bit woodcutter?
|
---|
145 |
|
---|
146 | for (EdgeIt i(g); i!=INVALID; ++i)
|
---|
147 | {
|
---|
148 | if(mapname!="Text")
|
---|
149 | {
|
---|
150 | double number=(*(mapstorage.edgemap_storage)[mapname])[i];
|
---|
151 | int length=(int)(floor(log(number)/log(10)))+1;
|
---|
152 | int maxpos=(int)(pow(10,length-1));
|
---|
153 | int strl=length+1+RANGE;
|
---|
154 | char * str=new char[strl];
|
---|
155 | str[length]='.';
|
---|
156 | str[strl]='\0';
|
---|
157 |
|
---|
158 | for(int j=0;j<strl;j++)
|
---|
159 | {
|
---|
160 | if(j!=length)
|
---|
161 | {
|
---|
162 | int digit=(int)(number/maxpos);
|
---|
163 | str[j]=(digit+'0');
|
---|
164 | number-=digit*maxpos;
|
---|
165 | number*=10;
|
---|
166 | }
|
---|
167 | }
|
---|
168 |
|
---|
169 | edgetextmap[i]->property_text().set_value(str);
|
---|
170 | }
|
---|
171 | else
|
---|
172 | {
|
---|
173 | edgetextmap[i]->property_text().set_value("");
|
---|
174 | }
|
---|
175 | }
|
---|
176 | return 0;
|
---|
177 | };
|
---|
178 |
|
---|
179 | bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n)
|
---|
180 | {
|
---|
181 | switch(e->type)
|
---|
182 | {
|
---|
183 | case GDK_BUTTON_PRESS:
|
---|
184 | //we mark the location of the event to be able to calculate parameters of dragging
|
---|
185 | clicked_x=e->button.x;
|
---|
186 | clicked_y=e->button.y;
|
---|
187 | active_item=(get_item_at(e->button.x, e->button.y));
|
---|
188 | isbutton=true;
|
---|
189 | break;
|
---|
190 | case GDK_BUTTON_RELEASE:
|
---|
191 | isbutton=false;
|
---|
192 | active_item=NULL;
|
---|
193 | break;
|
---|
194 | case GDK_MOTION_NOTIFY:
|
---|
195 | //we only have to do sg. if the mouse button is pressed
|
---|
196 | if(isbutton)
|
---|
197 | {
|
---|
198 | //new coordinates will be the old values,
|
---|
199 | //because the item will be moved to the
|
---|
200 | //new coordinate therefore the new movement
|
---|
201 | //has to be calculated from here
|
---|
202 |
|
---|
203 | double dx=e->motion.x-clicked_x;
|
---|
204 | double dy=e->motion.y-clicked_y;
|
---|
205 | active_item->move(dx, dy);
|
---|
206 | clicked_x=e->motion.x;
|
---|
207 | clicked_y=e->motion.y;
|
---|
208 |
|
---|
209 | //all the edges connected to the moved point has to be redrawn
|
---|
210 |
|
---|
211 | EdgeIt e;
|
---|
212 | g.firstOut(e,n);
|
---|
213 | for(;e!=INVALID;g.nextOut(e))
|
---|
214 | {
|
---|
215 | Gnome::Canvas::Points coos;
|
---|
216 | double x1, x2, y1, y2;
|
---|
217 |
|
---|
218 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
|
---|
219 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
---|
220 |
|
---|
221 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
|
---|
222 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
---|
223 |
|
---|
224 | edgesmap[e]->property_points().set_value(coos);
|
---|
225 |
|
---|
226 | edgesmap[e]->get_bounds(x1, y1, x2, y2);
|
---|
227 |
|
---|
228 | edgetextmap[e]->property_x().set_value((x1+x2)/2);
|
---|
229 | edgetextmap[e]->property_y().set_value((y1+y2)/2);
|
---|
230 | }
|
---|
231 |
|
---|
232 | g.firstIn(e,n);
|
---|
233 | for(;e!=INVALID;g.nextIn(e))
|
---|
234 | {
|
---|
235 | Gnome::Canvas::Points coos;
|
---|
236 | double x1, x2, y1, y2;
|
---|
237 |
|
---|
238 | nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
|
---|
239 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
---|
240 |
|
---|
241 | nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
|
---|
242 | coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
---|
243 |
|
---|
244 | edgesmap[e]->property_points().set_value(coos);
|
---|
245 |
|
---|
246 | edgesmap[e]->get_bounds(x1, y1, x2, y2);
|
---|
247 |
|
---|
248 | edgetextmap[e]->property_x().set_value((x1+x2)/2);
|
---|
249 | edgetextmap[e]->property_y().set_value((y1+y2)/2);
|
---|
250 | }
|
---|
251 | }
|
---|
252 | default: break;
|
---|
253 | }
|
---|
254 | return true;
|
---|
255 | }
|
---|
256 |
|
---|
257 | bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
|
---|
258 | {
|
---|
259 | Gnome::Canvas::CanvasAA::on_expose_event(event);
|
---|
260 | //usleep(10000);
|
---|
261 | //rezoom();
|
---|
262 | return true;
|
---|
263 | }
|
---|
264 |
|
---|
265 | void GraphDisplayerCanvas::zoomIn()
|
---|
266 | {
|
---|
267 | set_pixels_per_unit(
|
---|
268 | (1.0 + (double) zoom_step / 100.0) * get_pixels_per_unit());
|
---|
269 | }
|
---|
270 |
|
---|
271 | void GraphDisplayerCanvas::zoomOut()
|
---|
272 | {
|
---|
273 | set_pixels_per_unit(
|
---|
274 | (1.0 - (double) zoom_step / 100.0) * get_pixels_per_unit());
|
---|
275 | }
|
---|
276 |
|
---|
277 | void GraphDisplayerCanvas::zoomFit()
|
---|
278 | {
|
---|
279 | // get the height and width of the canvas
|
---|
280 | Gtk::Allocation a = get_allocation();
|
---|
281 | int aw = a.get_width();
|
---|
282 | int ah = a.get_height();
|
---|
283 | // add some space
|
---|
284 | aw -= 5; if (aw < 0) aw = 0;
|
---|
285 | ah -= 5; if (ah < 0) ah = 0;
|
---|
286 | //std::cout << "aw=" << aw << " ah=" << ah << std::endl;
|
---|
287 |
|
---|
288 | // get the bounding box of the graph
|
---|
289 | set_pixels_per_unit(1.0); // I don't really understand why this is necessary
|
---|
290 | double wx1, wy1, wx2, wy2;
|
---|
291 | double cx1, cy1, cx2, cy2;
|
---|
292 | Gnome::Canvas::Item* pCanvasItem = root();
|
---|
293 | pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
|
---|
294 | //std::cout << "root bounds: " << wx1 << " " << wy1 << " " << wx2 << " " << wy2 << std::endl;
|
---|
295 | w2c(wx1, wy1, cx1, cy1);
|
---|
296 | w2c(wx2, wy2, cx2, cy2);
|
---|
297 | //std::cout << "root bounds (c): " << cx1 << " " << cy1 << " " << cx2 << " " << cy2 << std::endl;
|
---|
298 | //std::cout << "cx2 - cx1=" << fabs(cx2 - cx1) << " cy2 - cy1=" << fabs(cy2 - cy1) << std::endl;
|
---|
299 |
|
---|
300 | // fit the graph to the window
|
---|
301 | double ppu1 = (double) aw / fabs(cx2 - cx1);
|
---|
302 | double ppu2 = (double) ah / fabs(cy2 - cy1);
|
---|
303 | //std::cout << "ppu1=" << ppu1 << " ppu2=" << ppu2 << std::endl;
|
---|
304 | (ppu1 < ppu2) ? set_pixels_per_unit(ppu1) : set_pixels_per_unit(ppu2);
|
---|
305 | }
|
---|
306 |
|
---|
307 | void GraphDisplayerCanvas::zoom100()
|
---|
308 | {
|
---|
309 | set_pixels_per_unit(1.0);
|
---|
310 | }
|
---|
311 |
|
---|
312 | void GraphDisplayerCanvas::updateScrollRegion()
|
---|
313 | {
|
---|
314 | double wx1, wy1, wx2, wy2;
|
---|
315 | int cx1, cy1, cx2, cy2;
|
---|
316 | Gnome::Canvas::Item* pCanvasItem = root();
|
---|
317 | pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
|
---|
318 | w2c(wx1, wy1, cx1, cy1);
|
---|
319 | w2c(wx2, wy2, cx2, cy2);
|
---|
320 | set_scroll_region(cx1, cy1, cx2, cy2);
|
---|
321 | }
|
---|