Several changes. \n If new map is added to mapstorage it emits signal with the name of the new map. This was important, because from now on not only tha mapwin should be updated. \n Furthermore algobox gets a pointer to mapstorage instead of only the mapnames from it. This is important because without it it would be complicated to pass all of the required maps to algobox.
1 #include "graph_displayer_canvas.h"
4 void GraphDisplayerCanvas::zoomIn()
7 (1.0 + (double) zoom_step / 100.0) * get_pixels_per_unit());
10 void GraphDisplayerCanvas::zoomOut()
13 (1.0 - (double) zoom_step / 100.0) * get_pixels_per_unit());
16 void GraphDisplayerCanvas::zoomFit()
20 // get the height and width of the canvas
21 Gtk::Allocation a = get_allocation();
22 int aw = a.get_width();
23 int ah = a.get_height();
25 // get the bounding box of the graph
27 double x1, y1, x2, y2;
28 root()->get_bounds(x1, y1, x2, y2);
30 // fit the graph to the window
31 double ppu1 = (double) aw / fabs(x2 - x1);
32 double ppu2 = (double) ah / fabs(y2 - y1);
33 set_pixels_per_unit((ppu1 < ppu2) ? ppu1 : ppu2);
36 void GraphDisplayerCanvas::zoom100()
39 set_pixels_per_unit(1.0);
42 void GraphDisplayerCanvas::updateScrollRegion()
44 // get_bounds() yields something sane only when no updates are pending
45 // and it returns a sufficient, not an exact bounding box
47 double x1, y1, x2, y2;
48 root()->get_bounds(x1, y1, x2, y2);
49 set_scroll_region(x1, y1, x2, y2);