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from ost import gui
from ost import gfx
import os
import ost
from PyQt5 import QtCore, QtWidgets, QtGui
from .immutable_gradient_info_handler import ImmutableGradientInfoHandler
from .gradient_info_handler import GradientInfoHandler
class GradientListModel(QtCore.QAbstractListModel):
IMMUTABLE_GRADIENTS_PATH = os.path.join(ost.GetSharedDataPath(),"scene",
"gradients.xml")
MUTABLE_GRADIENTS_PATH = "user_gradients.xml"
dataChanged = QtCore.pyqtSignal(int, int, name="dataChanged")
def __init__(self, parent=None, *args):
QtCore.QAbstractListModel.__init__(self, parent, *args)
self.data_ = list()
#Info Handler
self.immutable_infoh_ = ImmutableGradientInfoHandler(GradientListModel.IMMUTABLE_GRADIENTS_PATH)
self.infoh_ = GradientInfoHandler(GradientListModel.MUTABLE_GRADIENTS_PATH)
self.LoadGradientFromInfo()
def AddItem(self, name, gradient, row, editable, save):
if self.NameIsValid(name):
icon = self.GetIcon(gradient)
self.insertRow(row, QtCore.QModelIndex())
self.data_[row] = [name, gradient, icon, editable]
model_index = self.createIndex(row,0)
index = self.index(row)
end_index = self.createIndex(self.rowCount(),0)
if save:
self.AddGradientToInfo(gradient,name)
self.dataChanged.emit(model_index, end_index)
return True
return False
def IsEditable(self, row):
return self.data_[row][3]
def RemoveItem(self, row):
if self.IsEditable(row):
name = self.data_[row][0]
self.removeRow(row, QtCore.QModelIndex())
model_index = self.createIndex(row,0)
self.infoh_.RemoveGradient(name)
self.dataChanged.emit(model_index, model_index)
return True
return False
def AddGradientToInfo(self,gradient,name):
self.infoh_.StoreQGradient(gradient,str(name))
def LoadGradientFromInfo(self):
if self.immutable_infoh_:
qgradients = self.immutable_infoh_.GetQGradients()
for k, v in qgradients.items():
self.AddItem(k, v, self.GetLastRow(), False, False)
qgradients = self.infoh_.GetQGradients()
for k, v in qgradients.items():
self.AddItem(k, v, self.GetLastRow(), True, False)
def GetGradient(self, model_index):
if model_index.isValid():
return self.data_[model_index.row()][1]
def GetLastRow(self):
return self.rowCount()
#Helper
def GetIcon(self, gradient):
pixmap = QtGui.QPixmap(64, 64)
pixmap.fill(QtCore.Qt.transparent)
painter = QtGui.QPainter()
if painter.begin(pixmap):
gradient.setStart(QtCore.QPointF(0, 0))
gradient.setFinalStop(QtCore.QPointF(64, 0))
brush = QtGui.QBrush(gradient)
painter.setBrush(brush)
painter.drawRect(0, 0, 64, 64)
painter.end()
return QtGui.QIcon(pixmap)
def NameIsValid(self, string):
if len(string)==0:
return False
for values in self.data_:
if string == values[0]:
return False
return True
#Overwritten Methods
def rowCount(self, parent=QtCore.QModelIndex()):
return len(self.data_)
def data(self, index, role):
if index.isValid() and index.row()< self.rowCount():
data = self.data_[index.row()]
if role == QtCore.Qt.DisplayRole:
return QtCore.QVariant(data[0])
elif role == QtCore.Qt.DecorationRole:
return QtCore.QVariant(data[2])
return QtCore.QVariant()
def setData(self, index, value, role):
if index.isValid():
row = index.row()
if not self.data_[row]:
self.data_[row] = list()
if role == QtCore.Qt.EditRole and self.NameIsValid(value.toString()):
old_name = str(self.data_[row][0])
new_name = value.toString()
self.data_[row][0] = new_name
self.infoh_.RenameGradient(old_name,str(new_name))
self.dataChanged.emit(index, index)
return True
elif role == QtCore.Qt.DisplayRole:
self.data_[row][0] = value.toString()
elif role == QtCore.Qt.DecorationRole:
self.data_[row][2] = value.toPyObject()
return False
def flags(self, index):
if index.isValid():
flags = QtCore.QAbstractItemModel.flags(self,index)
if self.IsEditable(index.row()):
return flags | QtCore.Qt.ItemIsEditable
else:
return flags
return QtCore.Qt.ItemIsEnabled
def insertRow(self, position, index):
self.beginInsertRows(index, position, position)
self.data_.insert(position,list())
self.endInsertRows()
return True
def removeRow(self, position, index):
self.beginRemoveRows(index, position, position)
del self.data_[position]
self.endRemoveRows()
return True
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