| 51 | |
| 52 | |
| 53 | class AttributeSlider(wx.Panel): |
| 54 | # Slider which abstracts users values from internal values (because the built in slider does not deal with floats |
| 55 | # and the like), based on http://wxpython-users.wxwidgets.narkive.com/ekgBzA7u/anyone-ever-thought-of-a-floating-point-slider |
| 56 | |
| 57 | def __init__(self, parent, baseValue, minValue, maxValue, inverse=False, id=-1): |
| 58 | wx.Panel.__init__(self, parent, id=id) |
| 59 | |
| 60 | self.parent = parent |
| 61 | |
| 62 | self.base_value = baseValue |
| 63 | |
| 64 | self.UserMinValue = minValue |
| 65 | self.UserMaxValue = maxValue |
| 66 | |
| 67 | self.inverse = inverse |
| 68 | |
| 69 | def getStep(valRange): |
| 70 | """ |
| 71 | Find step for the passed range, which is based on 1, 2 or 5. |
| 72 | Step returned will make sure that range fits 10..50 of them, |
| 73 | as close to 10 as possible. |
| 74 | """ |
| 75 | steps = {1: None, 2: None, 5: None} |
| 76 | for baseInc in steps: |
| 77 | baseIncAmount = valRange / baseInc |
| 78 | incScale = math.floor(math.log10(baseIncAmount) - 1) |
| 79 | steps[baseInc] = baseInc * 10 ** incScale |
| 80 | chosenBase = min(steps, key=lambda base: valRange / steps[base]) |
| 81 | chosenStep = steps[chosenBase] |
| 82 | if inverse: |
| 83 | chosenStep *= -1 |
| 84 | return chosenStep |
| 85 | |
| 86 | def getDigitPlaces(minValue, maxValue): |
| 87 | minDigits = 3 |
| 88 | maxDigits = 5 |
| 89 | currentDecision = minDigits |
| 90 | for value in (floatUnerr(minValue), floatUnerr(maxValue)): |
| 91 | for currentDigit in range(minDigits, maxDigits + 1): |
| 92 | if round(value, currentDigit) == value: |
| 93 | if currentDigit > currentDecision: |
| 94 | currentDecision = currentDigit |
| 95 | break |
| 96 | # Max decimal places we can afford to show was not enough |
| 97 | else: |
| 98 | return maxDigits |
| 99 | return currentDecision |
| 100 | |
| 101 | self.ctrl = wx.SpinCtrlDouble(self, min=minValue, max=maxValue, inc=getStep(maxValue - minValue)) |
| 102 | self.ctrl.SetDigits(getDigitPlaces(minValue, maxValue)) |
| 103 | |
| 104 | self.ctrl.Bind(wx.EVT_SPINCTRLDOUBLE, self.UpdateValue) |
| 105 | # GTK scrolls spinboxes with mousewheel, others do not |
| 106 | if "wxGTK" not in wx.PlatformInfo: |
| 107 | self.ctrl.Bind(wx.EVT_MOUSEWHEEL, self.OnMouseWheel) |
| 108 | |
| 109 | self.slider = AttributeGauge(self, size=(-1, 8)) |
| 110 | |