"""
     qtgui/mgSliders.py: CCP4MG Molecular Graphics Program
     Copyright (C) 2001-2008 University of York, CCLRC
     Copyright (C) 2009-2011 University of York
     Copyright (C) 2012 STFC

     This library is free software: you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public License
     version 3, modified in accordance with the provisions of the 
     license to address the requirements of UK law.
 
     You should have received a copy of the modified GNU Lesser General 
     Public License along with this library.  If not, copies may be 
     downloaded from http://www.ccp4.ac.uk/ccp4license.php
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU Lesser General Public License for more details.
"""

from PyQt4 import QtGui,QtCore
import sip
import sys
from mgUpperLowerSlider import *

class DropDownSliderWithValue(QtGui.QWidget):
	def textChanged(self,dum=None):
		self.slider.blockSignals(True)
		import utils
		value = utils.safeFloat(self.text.text(),.75)
		import math
		if str(value) == "":
			value = 0

		try:
			if self.integer:
				val = int(value)
			else:
				val = float(value)
			self.slider.setValue(val*self.sliderScale)
			if self.integer:
				self.emit(QtCore.SIGNAL("valueChanged(int)"),(val))
			else:
				self.emit(QtCore.SIGNAL("valueChanged(double)"),(val))
		except:
			if  self.integer:
				self.emit(QtCore.SIGNAL("valueChanged(int)"),(0))
			else:
				self.emit(QtCore.SIGNAL("valueChanged(double)"),(0))
		self.slider.blockSignals(False)

	def sliderReleased(self):
		#if self.slider.isSliderDown():# Avoid cyclic signals
		self.text.blockSignals(True)
		if self.integer:
			self.text.setText(("%4i" % (self.value())).strip())
		else:
			self.text.setText(("%8.4f" % (self.value())).strip())
		self.text.blockSignals(False)
		if self.immediateMode:
			self.emit(QtCore.SIGNAL("sliderReleased()"))
		else:
			if self.integer:
				self.emit(QtCore.SIGNAL("valueChanged(int)"),self.value())
			else:
				self.emit(QtCore.SIGNAL("valueChanged(double)"),self.value())

	def setImmediateMode(self,value):
		self.immediateMode = value

	def sliderChanged(self,value):
		self.text.blockSignals(True)
		if self.integer:
			self.text.setText(("%4i" % (value/self.sliderScale)).strip())
		else:
			self.text.setText(("%8.4f" % (value/self.sliderScale)).strip())
		if self.immediateMode:
			if self.integer:
				self.emit(QtCore.SIGNAL("valueChanged(int)"),(float(value)/self.sliderScale))
			else:
				self.emit(QtCore.SIGNAL("valueChanged(double)"),(float(value)/self.sliderScale))
		self.text.blockSignals(False)

	def setValue(self,value):
		self.slider.blockSignals(True)

		self.slider.setValue(value*self.sliderScale)
		self.slider.blockSignals(False)
		self.text.blockSignals(True)
		if self.integer:
			self.text.setText(("%4i" % (value)).strip())
		else:
			self.text.setText(("%8.4f" % (value)).strip())
		self.text.blockSignals(False)

	def value(self):
		return self.slider.value()/self.sliderScale
   
	def setRange(self,min,max,integer=0):
		import math
		self.integer = integer # flag if restricted to integer values
		realRange = max-min
		if -0.01<realRange<0.01: realRange=100.0
		if self.integer:
			self.sliderScale = 1
			self.sliderMin = min
			self.sliderMax = max
			self.validator = QtGui.QIntValidator(min,max,self.text)
		else:       
			self.sliderScale = 1000.0/realRange
			self.sliderMin = int(math.floor(self.sliderScale*min))
			self.sliderMax = int(math.floor(self.sliderScale*max))
			self.validator = QtGui.QDoubleValidator(self.sliderMin,self.sliderMax,4,self.text)
		self.slider.setRange(self.sliderMin,self.sliderMax)
		self.text.setValidator(self.validator)

	def setSingleStep(self,step):
		import math
		self.step = int(math.floor(self.sliderScale*step))
		self.slider.setSingleStep(self.step)

	def __init__(self,align,parent=None):
		QtGui.QWidget.__init__(self,parent)
		layout = QtGui.QHBoxLayout()
		layout.setContentsMargins(2,2,2,2)
		layout.setSpacing(2)
		layout.setAlignment(QtCore.Qt.AlignLeft)
		self.text = QtGui.QLineEdit()

		menu = QtGui.QMenu(self)

		wac=QtGui.QWidgetAction(menu)
		self.slider = QtGui.QSlider(align)
		wac.setDefaultWidget(self.slider)
		action=menu.addAction(wac);

		tb = QtGui.QToolButton()
		tb.setMenu(menu)
		tb.setPopupMode(QtGui.QToolButton.InstantPopup)
		tb.setMaximumWidth(15)

		self.slider.setRange(-100,100)

		layout.addWidget(self.text)
		layout.addWidget(tb)
		self.setLayout(layout)
		self.text.setMaximumWidth(60)
		self.text.setMinimumWidth(45)
		self.validator = QtGui.QDoubleValidator(self.slider.minimum(),self.slider.maximum(),4,self.text)
		self.text.setValidator(self.validator)
		#self.text.setMaxLength(max(len(str(int(self.validator.bottom()))),len(str(int(self.validator.top()))))+self.validator.decimals())
		self.connect(self.slider,QtCore.SIGNAL("valueChanged(int)"),self.sliderChanged)
		self.connect(self.slider,QtCore.SIGNAL("sliderReleased()"),self.sliderReleased)
		self.connect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
		self.connect(self.text,QtCore.SIGNAL("editingFinished()"),self.textChanged)
		self.immediateMode = 1
		self.integer = 0
		self.sliderScale = 100.
		self.slider.setValue(0)

#-------------------------------------------------------------
class mgSlider(QtGui.QWidget):
#-------------------------------------------------------------
   #def textChanged(self,value):
   def textChanged(self,dum=None):
      self.slider.blockSignals(True)
      import utils
      value = utils.safeFloat(self.text.text(),.75)
      import math
      if str(value) == "":
	 value = 0

      try:
        if self.integer:
          val = int(value)
        else:
	  val = float(value)
	"""
	if val > self.validator.top():
	  val = self.validator.top()
	if val < self.validator.bottom():
	  val = self.validator.bottom()
	"""
        self.slider.setValue(val*self.sliderScale)
        if self.integer:
          self.emit(QtCore.SIGNAL("valueChanged(int)"),(val))
        else:
          self.emit(QtCore.SIGNAL("valueChanged(double)"),(val))
      except:
        if  self.integer:
          self.emit(QtCore.SIGNAL("valueChanged(int)"),(0))
        else:
          self.emit(QtCore.SIGNAL("valueChanged(double)"),(0))
      self.slider.blockSignals(False)
	 
   def sliderReleased(self):
      #if self.slider.isSliderDown():# Avoid cyclic signals
      #self.disconnect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.text.blockSignals(True)
      if self.integer:
        self.text.setText(("%4i" % (self.value())).strip())
      else:
        self.text.setText(("%8.4f" % (self.value())).strip())
      #self.connect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.text.blockSignals(False)
      if self.immediateMode:
        if self.integer:
          self.emit(QtCore.SIGNAL("sliderReleased()"))
        else:
          self.emit(QtCore.SIGNAL("sliderReleased()"))
      else:
        if self.integer:
          self.emit(QtCore.SIGNAL("valueChanged(int)"),self.value())
        else:
          self.emit(QtCore.SIGNAL("valueChanged(double)"),self.value())
        

   def sliderChanged(self,value):
      #if self.slider.isSliderDown():# Avoid cyclic signals
      #self.disconnect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.text.blockSignals(True)
      if self.integer:
        self.text.setText(("%4i" % (value/self.sliderScale)).strip())
      else:
        self.text.setText(("%8.4f" % (value/self.sliderScale)).strip())
      #self.connect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.text.blockSignals(False)
      if self.immediateMode:
        if self.integer:
          self.emit(QtCore.SIGNAL("valueChanged(int)"),(float(value)/self.sliderScale))
        else:
          self.emit(QtCore.SIGNAL("valueChanged(double)"),(float(value)/self.sliderScale))

   def setImmediateMode(self,value):
     self.immediateMode = value

   def setValue(self,value):
     #self.disconnect(self.slider,QtCore.SIGNAL("valueChanged(int)"),self.sliderChanged)
     self.slider.blockSignals(True)

     self.slider.setValue(value*self.sliderScale)
     #self.connect(self.slider,QtCore.SIGNAL("valueChanged(int)"),self.sliderChanged)
     self.slider.blockSignals(False)
     if self.integer:
       self.text.setText(("%4i" % (value)).strip())
     else:
       self.text.setText(("%8.4f" % (value)).strip())

   def minimum(self):
     return self.slider.minimum()/self.sliderScale

   def value(self):
     return self.slider.value()/self.sliderScale
   
   def setRange(self,min,max,integer=0):
      import math
      self.integer = integer # flag if restricted to integer values
      realRange = max-min
      if -0.01<realRange<0.01: realRange=100.0
      if self.integer:
        self.sliderScale = 1
        self.sliderMin = min
        self.sliderMax = max
        self.validator = QtGui.QIntValidator(min,max,self.text)
      else:       
        self.sliderScale = 1000.0/realRange
        self.sliderMin = int(math.floor(self.sliderScale*min))
        self.sliderMax = int(math.floor(self.sliderScale*max))
        self.validator = QtGui.QDoubleValidator(self.sliderMin,self.sliderMax,4,self.text)
      self.slider.setRange(self.sliderMin,self.sliderMax)
      self.text.setValidator(self.validator)
     

   def setSingleStep(self,step):
     import math
     self.step = int(math.floor(self.sliderScale*step))
     self.slider.setSingleStep(self.step)

   def __init__(self,align,parent=None):
      """
      For real value slider we want a slider with a big integer range,
      and then to scale the float line edit values onto that
      and vv.
      """
      QtGui.QWidget.__init__(self,parent)
      layout = QtGui.QHBoxLayout()
      margin=2
      layout.setContentsMargins(margin,margin,margin,margin)
      layout.setSpacing(margin)
      self.immediateMode = 1
      self.text = QtGui.QLineEdit(self)
      self.slider = QtGui.QSlider(align,self) 
      self.setRange(0.0,100.0,0)
      self.text.setMaximumWidth(60)
      self.text.setMinimumWidth(40)
      #self.text.setMinimumHeight(25)
      self.text.setMaxLength(max(len(str(int(self.validator.bottom()))),len(str(int(self.validator.top()))))+self.validator.decimals())
      layout.addWidget(self.slider)
      layout.addWidget(self.text,QtCore.Qt.AlignTop)
      self.connect(self.slider,QtCore.SIGNAL("valueChanged(int)"),self.sliderChanged)
      self.connect(self.slider,QtCore.SIGNAL("sliderReleased()"),self.sliderReleased)
      self.connect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.connect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.connect(self.text,QtCore.SIGNAL("editingFinished()"),self.textChanged)
      self.text.setText(str(self.slider.value()))
      self.setLayout(layout)
      self.show()


      
#-------------------------------------------------------------
class mgDeltaSlider(QtGui.QWidget):
#-------------------------------------------------------------

   def __init__(self,align,parent=None):
     
      """
      For real value slider we want a slider with a big integer range,
      and then to scale the float line edit values onto that
      and vv.
      """
      QtGui.QWidget.__init__(self,parent)
      self.resetToZero = 0
      layout = QtGui.QHBoxLayout()
      margin=2
      layout.setContentsMargins(margin,margin,margin,margin)
      layout.setSpacing(margin)
      self.text = QtGui.QLineEdit(self)
      self.slider = QtGui.QSlider(align,self)
      self.slider.setRange(-100,100)
      self.sliderScale = 100
      self.connect(self.slider,QtCore.SIGNAL('sliderPressed()'),self.sliderOn)
      self.connect(self.slider,QtCore.SIGNAL('sliderReleased()'),self.sliderOff)
      self.text.setMaximumWidth(60)
      self.setRange(-100,100)
      self.text.setMinimumWidth(40)
      #self.text.setMinimumHeight(25)
      self.text.setMaxLength(max(len(str(int(self.validator.bottom()))),len(str(int(self.validator.top()))))+self.validator.decimals())
      layout.addWidget(self.slider)
      layout.addWidget(self.text,QtCore.Qt.AlignTop)
      self.connect(self.slider,QtCore.SIGNAL("valueChanged(int)"),self.sliderChanged)
      self.connect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.connect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.connect(self.text,QtCore.SIGNAL("editingFinished()"),self.textChanged)
      self.text.setText(str(self.slider.value()))
      self.setLayout(layout)
      self.show()

   def textChanged(self):
      value = float(self.text.text())
      import math
      if str(value) == "":
	 value = 0

      try:
        if self.integer:
          val = int(value)
        else:
	  val = float(value)
	"""
	if val > self.validator.top():
	  val = self.validator.top()
	if val < self.validator.bottom():
	  val = self.validator.bottom()
	"""
        #self.slider.setValue(val*self.sliderScale)
        if self.integer:
          self.emit(QtCore.SIGNAL("valueChanged(int)"),(val))
        else:
          self.emit(QtCore.SIGNAL("valueChanged(double)"),(val))
      except:
        if  self.integer:
          self.emit(QtCore.SIGNAL("valueChanged(int)"),(0))
        else:
          self.emit(QtCore.SIGNAL("valueChanged(double)"),(0))
	 
   def sliderChanged(self,value):
      #if self.slider.isSliderDown():# Avoid cyclic signals
      #print 'mgDeltaSlider.sliderChanged',value
      #self.disconnect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.text.blockSignals(True)
      if self.integer:
        new = int(self.text.text()) + float(value)/self.sliderScale
        self.text.setText(("%4i" % (new)).strip())
      else:
        new = float(self.text.text()) + float(value)/self.sliderScale
        self.text.setText(("%8.4f" % (new)).strip())
      #self.connect(self.text,QtCore.SIGNAL("textEdited(const QString&)"),self.textChanged)
      self.text.blockSignals(False)
      if self.integer:
        self.emit(QtCore.SIGNAL("valueChanged(int)"),new)
      else:
        self.emit(QtCore.SIGNAL("valueChanged(double)"),new)

   def setValue(self,value):
     if self.integer:
       self.text.setText(("%4i" % (value)).strip())
     else:
       self.text.setText(("%8.4f" % (value)).strip())

   def value(self):
      if self.integer:
        return int(self.text.text())
      else:
        return float(self.text.text())

   
   def setRange(self,min,max,integer=0):
      import math
      self.integer = integer # flag if restricted to integer values
      realRange = max-min
      if -0.01<realRange<0.01: realRange=100.0
      if self.integer:
        self.validator = QtGui.QIntValidator(min,max,self.text)
      else:       
        self.validator = QtGui.QDoubleValidator(min,max,4,self.text)
      self.text.setValidator(self.validator)

   def sliderOn(self):
     #print 'sliderOn'
     global_definitions.MAINWINDOW().addAnimationHandler(self.objectName(),self.update)

   def sliderOff(self):
     global_definitions.MAINWINDOW().removeAnimationHandler(self.objectName())
     #self.disconnect(self.slider,QtCore.SIGNAL("valueChanged(int)"),self.sliderChanged)
     self.slider.blockSignals(True)
     self.slider.setValue(0)
     #self.connect(self.slider,QtCore.SIGNAL("valueChanged(int)"),self.sliderChanged)
     self.slider.blockSignals(False)

   def update(self):
     #print 'update',self.slider.value()
     self.sliderChanged(self.slider.value())