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Coverage Report

  1. Project Clover database Wed Nov 13 2024 16:12:26 GMT
  2. Package jalview.gui

File Slider.java

 

Coverage histogram

../../img/srcFileCovDistChart6.png
37% of files have more coverage

Code metrics

2
15
6
1
139
45
7
0.47
2.5
6
1.17

Classes

Class Line # Actions
Slider 36 15 7
0.565217456.5%
 

Contributing tests

This file is covered by 1 test. .

Source view

1    /*
2    * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3    * Copyright (C) $$Year-Rel$$ The Jalview Authors
4    *
5    * This file is part of Jalview.
6    *
7    * Jalview is free software: you can redistribute it and/or
8    * modify it under the terms of the GNU General Public License
9    * as published by the Free Software Foundation, either version 3
10    * of the License, or (at your option) any later version.
11    *
12    * Jalview is distributed in the hope that it will be useful, but
13    * WITHOUT ANY WARRANTY; without even the implied warranty
14    * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15    * PURPOSE. See the GNU General Public License for more details.
16    *
17    * You should have received a copy of the GNU General Public License
18    * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
19    * The Jalview Authors are detailed in the 'AUTHORS' file.
20    */
21    package jalview.gui;
22   
23    import javax.swing.JSlider;
24   
25    /**
26    * A modified {@code javax.swing.JSlider} that
27    * <ul>
28    * <li>supports float valued numbers (by scaling up integer values)</li>
29    * <li>rescales 'true' value range to avoid negative values, as these are not
30    * rendered correctly by some look and feel libraries</li>
31    * </ul>
32    *
33    * @author gmcarstairs
34    */
35    @SuppressWarnings("serial")
 
36    public class Slider extends JSlider
37    {
38    /*
39    * the number of nominal positions the slider represents
40    * (higher number = more fine-grained positioning)
41    */
42    private static final int SCALE_TICKS = 1000;
43   
44    /*
45    * 'true' value corresponding to zero on the slider
46    */
47    private float trueMin;
48   
49    /*
50    * 'true' value corresponding to slider maximum
51    */
52    private float trueMax;
53   
54    /*
55    * scaleFactor applied to true value range to give a
56    * slider range of 0 - 100
57    */
58    private float sliderScaleFactor;
59   
60    /**
61    * Constructor that rescales min - max to 0 - 100 for the slider
62    *
63    * @param min
64    * @param max
65    * @param value
66    */
 
67  2 toggle public Slider(float min, float max, float value)
68    {
69  2 super();
70  2 setSliderModel(min, max, value);
71    }
72   
73    /**
74    * Sets the min-max range and current value of the slider, with rescaling from
75    * true values to slider range as required
76    *
77    * @param min
78    * @param max
79    * @param value
80    */
 
81  2 toggle public void setSliderModel(float min, float max, float value)
82    {
83  2 trueMin = min;
84  2 trueMax = max;
85  2 setMinimum(0);
86  2 sliderScaleFactor = SCALE_TICKS / (max - min);
87  2 int sliderMax = (int) ((max - min) * sliderScaleFactor);
88  2 setMaximum(sliderMax);
89  2 setSliderValue(value);
90    }
91   
92    /**
93    * Answers the value of the slider position (descaled to 'true' value)
94    *
95    * @return
96    */
 
97  0 toggle public float getSliderValue()
98    {
99    /*
100    * convert slider max to 'true max' in case of rounding errors
101    */
102  0 int value = getValue();
103  0 return value == getMaximum() ? trueMax
104    : value / sliderScaleFactor + trueMin;
105    }
106   
107    /**
108    * Sets the slider value (scaled from the true value to the slider range)
109    *
110    * @param value
111    */
 
112  2 toggle public void setSliderValue(float value)
113    {
114  2 setValue(Math.round((value - trueMin) * sliderScaleFactor));
115    }
116   
117    /**
118    * Answers the value of the slider position as a percentage between minimum
119    * and maximum of its range
120    *
121    * @return
122    */
 
123  0 toggle public float getSliderPercentageValue()
124    {
125  0 return (getValue() - getMinimum()) * 100f
126    / (getMaximum() - getMinimum());
127    }
128   
129    /**
130    * Sets the slider position for a given percentage value of its min-max range
131    *
132    * @param pct
133    */
 
134  0 toggle public void setSliderPercentageValue(float pct)
135    {
136  0 float pc = pct / 100f * getMaximum();
137  0 setValue((int) pc);
138    }
139    }