# A prelininary attempt to implement two classes that create sliders
# that mimic the behavior of MEL's intSliderGrp and floatSliderGrp. 
# Malcolm Kesson
# 28 July 2020
 
try:
    from PyQt5.QtCore import *
    from PyQt5.QtGui import *
    from PyQt5.QtWidgets import *
except ImportError:
    from PySide2.QtGui import *
    from PySide2.QtWidgets import *
    from PySide2.QtCore import *
    from PySide2.QtUiTools import *
import math
 
#______________________________________________________________
class IntSlider(QWidget):
    def __init__(self, title, min, max, def_value, parent_layout, label_width=100):
        super(IntSlider, self).__init__(None)
        label = QLabel()
        label.setText(title)
        label.setFixedWidth(label_width)
    
        self.spinbox = QSpinBox()
        self.spinbox.setRange(min, max)
        self.spinbox.setValue(def_value)
        
        self.slider  = QSlider(Qt.Horizontal)
        self.slider.setRange(min, max)
        self.slider.setValue(def_value)
            
        self.slider.valueChanged.connect(self.update_spinbox)
        self.spinbox.valueChanged.connect(self.update_slider)
        hlayout = QHBoxLayout()    
        hlayout.addWidget(label)
        hlayout.addWidget(self.spinbox)
        hlayout.addWidget(self.slider)
        parent_layout.addLayout(hlayout)
        
    def update_spinbox(self):
        value = self.slider.value()
        self.spinbox.setValue( value )
    def update_slider(self):
        value = self.spinbox.value()
        self.slider.setValue( value )
    def getValue(self):
        return self.spinbox.value() 
 
#______________________________________________________________
 
 
class FloatSlider(QWidget):
    def __init__(self, title, min, max, def_value, parent_layout, label_widt=100, decimal_places=2):
        super(FloatSlider, self).__init__(None)
        self.decimal_conversion = math.pow(10,decimal_places)
        self.min = min
        self.max = max
        
        label = QLabel()
        label.setText(title)
        label.setFixedWidth(label_widt)
        
        self.spinbox = QDoubleSpinBox()
        self.spinbox.setRange(min, max)
        self.spinbox.setValue(def_value)
        self.spinbox.setDecimals(decimal_places)
        
        self.slider  = QSlider(Qt.Horizontal)
        adjusted_max = (max - min) * self.decimal_conversion
        adjusted_max = int(round(adjusted_max))
        self.slider.setRange(0, adjusted_max)
        
        self.slider.setValue( (def_value - min) * self.decimal_conversion)
            
        self.slider.valueChanged.connect(self.update_spinbox)
        self.spinbox.valueChanged.connect(self.update_slider)
        hlayout = QHBoxLayout()    
        hlayout.addWidget(label)
        hlayout.addWidget(self.spinbox)
        hlayout.addWidget(self.slider)
        parent_layout.addLayout(hlayout)
        
    def update_spinbox(self):
        value = self.slider.value()
        value = float(value)/self.decimal_conversion
        self.spinbox.setValue(value + self.min)
        
    def update_slider(self):
        value = self.spinbox.value()
        value = (value - self.min) * self.decimal_conversion
        self.slider.setValue( int(round(value)) )
        
    def getValue(self):
        return self.spinbox.value()
#______________________________________________________________