diff options
| author | Bill Spitzak <spitzak@gmail.com> | 2000-01-17 20:40:12 +0000 |
|---|---|---|
| committer | Bill Spitzak <spitzak@gmail.com> | 2000-01-17 20:40:12 +0000 |
| commit | ecc91867b307b1280e0a1cb1beb3fd8d2ebdc4b4 (patch) | |
| tree | c82aa232257a0cf72b2a24309061978964d35849 | |
| parent | 685d58c4979f7c6a307b191321307e32130ed959 (diff) | |
Fixed divide by zero in Fl_Scrollbar found by Harm-Jan Zwinderman. This
happened if minimum == maximum.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@987 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
| -rw-r--r-- | src/Fl_Scrollbar.cxx | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/src/Fl_Scrollbar.cxx b/src/Fl_Scrollbar.cxx index 16ba09074..464266a17 100644 --- a/src/Fl_Scrollbar.cxx +++ b/src/Fl_Scrollbar.cxx @@ -1,5 +1,5 @@ // -// "$Id: Fl_Scrollbar.cxx,v 1.7.2.5 2000/01/16 04:30:37 bill Exp $" +// "$Id: Fl_Scrollbar.cxx,v 1.7.2.6 2000/01/17 20:40:12 bill Exp $" // // Scroll bar widget for the Fast Light Tool Kit (FLTK). // @@ -75,7 +75,11 @@ int Fl_Scrollbar::handle(int event) { else { int sliderx; int S = int(slider_size()*W+.5); - double val = (value()-minimum())/(maximum()-minimum()); + double val; + if (minimum() == maximum()) + val = 0.5; + else + val = (value()-minimum())/(maximum()-minimum()); if (val >= 1.0) sliderx = W-S; else if (val <= 0.0) sliderx = 0; else sliderx = int(val*(W-S)+.5); @@ -91,7 +95,11 @@ int Fl_Scrollbar::handle(int event) { else { int slidery; int S = int(slider_size()*H+.5); - double val = (value()-minimum())/(maximum()-minimum()); + double val; + if (minimum() == maximum()) + val = 0.5; + else + val = (value()-minimum())/(maximum()-minimum()); if (val >= 1.0) slidery = H-S; else if (val <= 0.0) slidery = 0; else slidery = int(val*(H-S)+.5); @@ -241,5 +249,5 @@ Fl_Scrollbar::Fl_Scrollbar(int X, int Y, int W, int H, const char* L) } // -// End of "$Id: Fl_Scrollbar.cxx,v 1.7.2.5 2000/01/16 04:30:37 bill Exp $". +// End of "$Id: Fl_Scrollbar.cxx,v 1.7.2.6 2000/01/17 20:40:12 bill Exp $". // |