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Fixed divide by zero in Fl_Scrollbar found by Harm-Jan Zwinderman. This

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happened if minimum == maximum.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@987 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Bill Spitzak 2000-01-17 20:40:12 +00:00
parent 685d58c497
commit ecc91867b3
1 changed files with 12 additions and 4 deletions
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16
src/Fl_Scrollbar.cxx
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@ -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 $".
//