src/libs/print/libprint/JSDSlider.cpp

   1 /*
   2         JSDSlider.cpp
   3         Dr.H.Reh
   4         27.11.2004
   5
   6         Based on source code from Be Inc. RIP
   7         Copyright 1995 Be Incorporated, All Rights Reserved.
   8 */
   9
  10 #include "JSDSlider.h"
  11
  12 #include <stdlib.h>
  13 #include <stdio.h>
  14 #include <string.h>
  15
  16
  17 JSDSlider::JSDSlider(const char* name, const char* label,
  18         BMessage* msg, int32 min, int32 max)
  19         : BSlider(name, label, msg, min, max, B_HORIZONTAL)
  20 {
  21 }
  22
  23
  24 JSDSlider::~JSDSlider()
  25 {
  26 }
  27
  28
  29 const char*
  30 JSDSlider::UpdateText() const
  31 {
  32         // When the slider's Draw method is called, this method will also be called.
  33         // If its return value is non-NULL, then it will be drawn with the rest of
  34         // the slider
  35         static char string[64];
  36         string[0] = 0;
  37
  38         if (!strcmp("gamma", Name())) {
  39                 float gamma;
  40                 gamma = exp((Value() * log(2.0) * 0.01) );
  41                 sprintf(string, " %.2f", gamma);
  42         } else if (!strcmp("inkDensity", Name()) ) {
  43                 float density = Value();
  44                 density = (density / 127.0) * 100.0;
  45                 sprintf(string," %.0f%%", density);
  46         }
  47
  48         fResult.SetTo(string);
  49         return fResult.String();
  50 }