# HG changeset patch
# User ladanyi
# Date 1117801523 0
# Node ID 6a9399f56813a5ad24b4aaee5a39fc33fa0431cd
# Parent  603b85626bc00bd655422290e6d4fc5a17e07c39
zooming should really work now

diff -r 603b85626bc0 -r 6a9399f56813 graph_displayer_canvas.cc
--- a/graph_displayer_canvas.cc	Wed Jun 01 23:33:26 2005 +0000
+++ b/graph_displayer_canvas.cc	Fri Jun 03 12:25:23 2005 +0000
@@ -190,6 +190,7 @@
     case GDK_BUTTON_RELEASE:
       isbutton=false;
       active_item=NULL;
+      updateScrollRegion();
       break;
     case GDK_MOTION_NOTIFY:
       //we only have to do sg. if the mouse button is pressed
@@ -283,25 +284,16 @@
   // add some space
   aw -= 5; if (aw < 0) aw = 0;
   ah -= 5; if (ah < 0) ah = 0;
-  //std::cout << "aw=" << aw << " ah=" << ah << std::endl;
 
   // get the bounding box of the graph
-  set_pixels_per_unit(1.0); // I don't really understand why this is necessary
   double wx1, wy1, wx2, wy2;
-  double cx1, cy1, cx2, cy2;
   Gnome::Canvas::Item* pCanvasItem = root();
   pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
-  //std::cout << "root bounds: " << wx1 << " " << wy1 << " " << wx2 << " " << wy2 << std::endl;
-  w2c(wx1, wy1, cx1, cy1);
-  w2c(wx2, wy2, cx2, cy2);
-  //std::cout << "root bounds (c): " << cx1 << " " << cy1 << " " << cx2 << " " << cy2 << std::endl;
-  //std::cout << "cx2 - cx1=" << fabs(cx2 - cx1) << " cy2 - cy1=" << fabs(cy2 - cy1) << std::endl;
 
   // fit the graph to the window
-  double ppu1 = (double) aw / fabs(cx2 - cx1);
-  double ppu2 = (double) ah / fabs(cy2 - cy1);
-  //std::cout << "ppu1=" << ppu1 << " ppu2=" << ppu2 << std::endl;
-  (ppu1 < ppu2) ? set_pixels_per_unit(ppu1) : set_pixels_per_unit(ppu2);
+  double ppu1 = (double) aw / fabs(wx2 - wx1);
+  double ppu2 = (double) ah / fabs(wy2 - wy1);
+  set_pixels_per_unit((ppu1 < ppu2) ? ppu1 : ppu2);
 }
 
 void GraphDisplayerCanvas::zoom100()
@@ -312,10 +304,7 @@
 void GraphDisplayerCanvas::updateScrollRegion()
 {
   double wx1, wy1, wx2, wy2;
-  int cx1, cy1, cx2, cy2;
   Gnome::Canvas::Item* pCanvasItem = root();
   pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
-  w2c(wx1, wy1, cx1, cy1);
-  w2c(wx2, wy2, cx2, cy2);
-  set_scroll_region(cx1, cy1, cx2, cy2);
+  set_scroll_region(wx1, wy1, wx2, wy2);
 }