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[processing] Guess sensible step sizes for float spin boxes

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This commit is contained in:
Nyall Dawson 2015-11-18 16:26:55 +11:00
parent ffd9707516
commit 86231d79fa
1 changed files with 15 additions and 0 deletions
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15
python/plugins/processing/gui/NumberInputPanel.py
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@ -29,6 +29,7 @@ import os
from PyQt4 import uic
from math import log10, floor
from processing.gui.NumberInputDialog import NumberInputDialog
pluginPath = os.path.split(os.path.dirname(__file__))[0]
@ -45,6 +46,11 @@ class NumberInputPanel(BASE, WIDGET):
self.isInteger = isInteger
if self.isInteger:
self.spnValue.setDecimals(0)
else:
#Guess reasonable step value
if (maximum == 0 or maximum) and (minimum == 0 or minimum):
self.spnValue.setSingleStep(self.calculateStep(minimum, maximum))
if maximum == 0 or maximum:
self.spnValue.setMaximum(maximum)
else:
@ -66,3 +72,12 @@ class NumberInputPanel(BASE, WIDGET):
def getValue(self):
return self.spnValue.value()
def calculateStep(self, minimum, maximum):
valueRange = maximum - minimum
if valueRange <= 1.0:
step = valueRange / 10.0
# round to 1 significant figure
return round(step, -int(floor(log10(step))))
else:
return 1.0