97 } |
97 } |
98 isbutton=e->button.button; |
98 isbutton=e->button.button; |
99 break; |
99 break; |
100 case GDK_BUTTON_RELEASE: |
100 case GDK_BUTTON_RELEASE: |
101 if (coord_text) |
101 if (coord_text) |
102 { |
102 { |
103 delete coord_text; |
103 delete coord_text; |
104 coord_text = 0; |
104 coord_text = 0; |
105 } |
105 } |
106 isbutton=0; |
106 isbutton=0; |
107 active_item=NULL; |
107 active_item=NULL; |
108 active_node=INVALID; |
108 active_node=INVALID; |
109 break; |
109 break; |
110 case GDK_MOTION_NOTIFY: |
110 case GDK_MOTION_NOTIFY: |
111 //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 |
111 //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 |
112 if(active_node!=INVALID) |
112 if(active_node!=INVALID) |
113 { |
113 { |
114 (mytab.mapstorage).modified = true; |
114 (mytab.mapstorage).modified = true; |
115 |
115 |
116 //new coordinates will be the old values, |
116 //new coordinates will be the old values, |
117 //because the item will be moved to the |
117 //because the item will be moved to the |
118 //new coordinate therefore the new movement |
118 //new coordinate therefore the new movement |
119 //has to be calculated from here |
119 //has to be calculated from here |
120 |
120 |
121 double new_x, new_y; |
121 double new_x, new_y; |
122 |
122 |
123 window_to_world (e->motion.x, e->motion.y, new_x, new_y); |
123 window_to_world (e->motion.x, e->motion.y, new_x, new_y); |
124 |
124 |
125 double dx=new_x-clicked_x; |
125 double dx=new_x-clicked_x; |
126 double dy=new_y-clicked_y; |
126 double dy=new_y-clicked_y; |
127 |
127 |
128 //repositioning node and its text |
128 moveNode(dx, dy); |
129 active_item->move(dx, dy); |
129 |
130 nodetextmap[active_node]->move(dx, dy); |
130 clicked_x=new_x; |
131 |
131 clicked_y=new_y; |
132 // the new coordinates of the centre of the node |
132 |
133 double coord_x = new_x - (clicked_x - (mytab.mapstorage).coords[active_node].x); |
133 // reposition the coordinates text |
134 double coord_y = new_y - (clicked_y - (mytab.mapstorage).coords[active_node].y); |
134 std::ostringstream ostr; |
135 |
135 ostr << "(" << |
136 // write back the new coordinates to the coords map |
136 (mytab.mapstorage).coords[active_node].x << ", " << |
137 (mytab.mapstorage).coords.set(active_node, XY(coord_x, coord_y)); |
137 (mytab.mapstorage).coords[active_node].y << ")"; |
138 |
138 double radius = |
139 clicked_x=new_x; |
139 (nodesmap[active_node]->property_x2().get_value() - |
140 clicked_y=new_y; |
140 nodesmap[active_node]->property_x1().get_value()) / 2.0; |
141 |
141 if (coord_text) |
142 // reposition the coordinates text |
142 { |
143 std::ostringstream ostr; |
143 coord_text->property_text().set_value(ostr.str()); |
144 ostr << "(" << |
144 coord_text->property_x().set_value((mytab.mapstorage).coords[active_node].x + |
145 (mytab.mapstorage).coords[active_node].x << ", " << |
145 radius); |
146 (mytab.mapstorage).coords[active_node].y << ")"; |
146 coord_text->property_y().set_value((mytab.mapstorage).coords[active_node].y - |
147 double radius = |
147 radius); |
148 (nodesmap[active_node]->property_x2().get_value() - |
148 } |
149 nodesmap[active_node]->property_x1().get_value()) / 2.0; |
149 else |
150 if (coord_text) |
150 { |
151 { |
151 coord_text = new Gnome::Canvas::Text( |
152 coord_text->property_text().set_value(ostr.str()); |
152 displayed_graph, |
153 coord_text->property_x().set_value((mytab.mapstorage).coords[active_node].x + |
153 (mytab.mapstorage).coords[active_node].x + radius, |
154 radius); |
154 (mytab.mapstorage).coords[active_node].y - radius, |
155 coord_text->property_y().set_value((mytab.mapstorage).coords[active_node].y - |
155 ostr.str()); |
156 radius); |
156 coord_text->property_fill_color().set_value("black"); |
157 } |
157 coord_text->property_anchor().set_value(Gtk::ANCHOR_SOUTH_WEST); |
158 else |
158 } |
159 { |
159 |
160 coord_text = new Gnome::Canvas::Text( |
160 |
161 displayed_graph, |
161 } |
162 (mytab.mapstorage).coords[active_node].x + radius, |
|
163 (mytab.mapstorage).coords[active_node].y - radius, |
|
164 ostr.str()); |
|
165 coord_text->property_fill_color().set_value("black"); |
|
166 coord_text->property_anchor().set_value(Gtk::ANCHOR_SOUTH_WEST); |
|
167 } |
|
168 |
|
169 //all the edges connected to the moved point has to be redrawn |
|
170 for(OutEdgeIt ei((mytab.mapstorage).graph,active_node);ei!=INVALID;++ei) |
|
171 { |
|
172 XY arrow_pos; |
|
173 |
|
174 if (mytab.mapstorage.graph.source(ei) == mytab.mapstorage.graph.target(ei)) |
|
175 { |
|
176 arrow_pos = mytab.mapstorage.arrow_pos[ei] + XY(dx, dy); |
|
177 } |
|
178 else |
|
179 { |
|
180 XY moved_node_1(coord_x - dx, coord_y - dy); |
|
181 XY moved_node_2(coord_x, coord_y); |
|
182 Node target = mytab.mapstorage.graph.target(ei); |
|
183 XY fix_node(mytab.mapstorage.coords[target].x, |
|
184 mytab.mapstorage.coords[target].y); |
|
185 XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]); |
|
186 |
|
187 arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton); |
|
188 } |
|
189 |
|
190 mytab.mapstorage.arrow_pos.set(ei, arrow_pos); |
|
191 edgesmap[ei]->draw(); |
|
192 |
|
193 //reposition of edgetext |
|
194 XY text_pos=mytab.mapstorage.arrow_pos[ei]; |
|
195 text_pos+=(XY(10,10)); |
|
196 edgetextmap[ei]->property_x().set_value(text_pos.x); |
|
197 edgetextmap[ei]->property_y().set_value(text_pos.y); |
|
198 } |
|
199 |
|
200 for(InEdgeIt ei((mytab.mapstorage).graph,active_node);ei!=INVALID;++ei) |
|
201 { |
|
202 if (mytab.mapstorage.graph.source(ei) != mytab.mapstorage.graph.target(ei)) |
|
203 { |
|
204 XY moved_node_1(coord_x - dx, coord_y - dy); |
|
205 XY moved_node_2(coord_x, coord_y); |
|
206 Node source = mytab.mapstorage.graph.source(ei); |
|
207 XY fix_node(mytab.mapstorage.coords[source].x, |
|
208 mytab.mapstorage.coords[source].y); |
|
209 XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]); |
|
210 |
|
211 XY arrow_pos; |
|
212 arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton); |
|
213 |
|
214 mytab.mapstorage.arrow_pos.set(ei, arrow_pos); |
|
215 edgesmap[ei]->draw(); |
|
216 |
|
217 //reposition of edgetext |
|
218 XY text_pos=mytab.mapstorage.arrow_pos[ei]; |
|
219 text_pos+=(XY(10,10)); |
|
220 edgetextmap[ei]->property_x().set_value(text_pos.x); |
|
221 edgetextmap[ei]->property_y().set_value(text_pos.y); |
|
222 } |
|
223 } |
|
224 } |
|
225 default: break; |
162 default: break; |
226 } |
163 } |
227 |
164 |
228 return false; |
165 return false; |
229 } |
166 } |
230 |
167 |
231 XY GraphDisplayerCanvas::calcArrowPos(XY moved_node_1, XY moved_node_2, XY fix_node, XY old_arrow_pos, int move_code) |
168 XY GraphDisplayerCanvas::calcArrowPos(XY moved_node_1, XY moved_node_2, XY fix_node, XY old_arrow_pos, int move_code) |
232 { |
169 { |
233 switch(move_code) |
170 switch(move_code) |
821 } |
758 } |
822 } |
759 } |
823 } |
760 } |
824 } |
761 } |
825 else |
762 else |
826 { |
763 { |
827 if(forming_edge!=INVALID) |
764 if(forming_edge!=INVALID) |
828 { |
765 { |
829 forming_edge=INVALID; |
766 forming_edge=INVALID; |
830 } |
767 } |
831 else |
768 else |
832 { |
769 { |
833 std::cerr << "ERROR!!!! Invalid edge found!" << std::endl; |
770 std::cerr << "ERROR!!!! Invalid edge found!" << std::endl; |
834 } |
771 } |
835 } |
772 } |
836 } |
773 } |
|
774 |
|
775 void GraphDisplayerCanvas::moveNode(double dx, double dy, Gnome::Canvas::Item * item, Node node) |
|
776 { |
|
777 Gnome::Canvas::Item * moved_item=item; |
|
778 Node moved_node=node; |
|
779 |
|
780 if(item==NULL && node==INVALID) |
|
781 { |
|
782 moved_item=active_item; |
|
783 moved_node=active_node; |
|
784 } |
|
785 else |
|
786 { |
|
787 isbutton=1; |
|
788 } |
|
789 |
|
790 //repositioning node and its text |
|
791 moved_item->move(dx, dy); |
|
792 nodetextmap[moved_node]->move(dx, dy); |
|
793 |
|
794 // the new coordinates of the centre of the node |
|
795 double coord_x = dx + (mytab.mapstorage).coords[moved_node].x; |
|
796 double coord_y = dy + (mytab.mapstorage).coords[moved_node].y; |
|
797 |
|
798 // write back the new coordinates to the coords map |
|
799 (mytab.mapstorage).coords.set(moved_node, XY(coord_x, coord_y)); |
|
800 |
|
801 //all the edges connected to the moved point has to be redrawn |
|
802 for(OutEdgeIt ei((mytab.mapstorage).graph,moved_node);ei!=INVALID;++ei) |
|
803 { |
|
804 XY arrow_pos; |
|
805 |
|
806 if (mytab.mapstorage.graph.source(ei) == mytab.mapstorage.graph.target(ei)) |
|
807 { |
|
808 arrow_pos = mytab.mapstorage.arrow_pos[ei] + XY(dx, dy); |
|
809 } |
|
810 else |
|
811 { |
|
812 XY moved_node_1(coord_x - dx, coord_y - dy); |
|
813 XY moved_node_2(coord_x, coord_y); |
|
814 Node target = mytab.mapstorage.graph.target(ei); |
|
815 XY fix_node(mytab.mapstorage.coords[target].x, |
|
816 mytab.mapstorage.coords[target].y); |
|
817 XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]); |
|
818 |
|
819 arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton); |
|
820 } |
|
821 |
|
822 mytab.mapstorage.arrow_pos.set(ei, arrow_pos); |
|
823 edgesmap[ei]->draw(); |
|
824 |
|
825 //reposition of edgetext |
|
826 XY text_pos=mytab.mapstorage.arrow_pos[ei]; |
|
827 text_pos+=(XY(10,10)); |
|
828 edgetextmap[ei]->property_x().set_value(text_pos.x); |
|
829 edgetextmap[ei]->property_y().set_value(text_pos.y); |
|
830 } |
|
831 |
|
832 for(InEdgeIt ei((mytab.mapstorage).graph,moved_node);ei!=INVALID;++ei) |
|
833 { |
|
834 if (mytab.mapstorage.graph.source(ei) != mytab.mapstorage.graph.target(ei)) |
|
835 { |
|
836 XY moved_node_1(coord_x - dx, coord_y - dy); |
|
837 XY moved_node_2(coord_x, coord_y); |
|
838 Node source = mytab.mapstorage.graph.source(ei); |
|
839 XY fix_node(mytab.mapstorage.coords[source].x, |
|
840 mytab.mapstorage.coords[source].y); |
|
841 XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]); |
|
842 |
|
843 XY arrow_pos; |
|
844 arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton); |
|
845 |
|
846 mytab.mapstorage.arrow_pos.set(ei, arrow_pos); |
|
847 edgesmap[ei]->draw(); |
|
848 |
|
849 //reposition of edgetext |
|
850 XY text_pos=mytab.mapstorage.arrow_pos[ei]; |
|
851 text_pos+=(XY(10,10)); |
|
852 edgetextmap[ei]->property_x().set_value(text_pos.x); |
|
853 edgetextmap[ei]->property_y().set_value(text_pos.y); |
|
854 } |
|
855 } |
|
856 } |