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from PyQt5.QtWidgets import QDialog, QPushButton, QFormLayout, QComboBox, QLabel, QMessageBox
from .sizes import sheetDimensionList, ppiList
class paperDims(QDialog):
"""
Utility dialog box to adjust the current canvas's dimensions, might return just dimensions later
so that sizes do not need to be imported in every other module.
"""
def __init__(self, parent=None, size='A4', ppi='72', name='Canvas Size'):
super(paperDims, self).__init__(parent)
#store initial values to show currently set value, also updated when changed. these are returned at EOL
self._canvasSize = size
self._ppi = ppi
self.setWindowTitle(name+":Canvas Size") #Set Window Title
#init layout
dialogBoxLayout = QFormLayout(self)
sizeComboBox = QComboBox() #combo box for paper sizes
sizeComboBox.addItems(sheetDimensionList)
sizeComboBox.setCurrentIndex(4)
sizeComboBox.activated[str].connect(self.setCanvasSize)
sizeLabel = QLabel("Canvas Size")
sizeLabel.setBuddy(sizeComboBox) # label for the above combo box
sizeComboBox.setCurrentIndex(sheetDimensionList.index(self._canvasSize)) #set index to current value of canvas
dialogBoxLayout.setWidget(0, QFormLayout.LabelRole, sizeLabel)
dialogBoxLayout.setWidget(0, QFormLayout.FieldRole, sizeComboBox)
ppiComboBox = QComboBox() #combo box for ppis
ppiComboBox.addItems(ppiList)
ppiComboBox.activated[str].connect(self.setCanvasPPI)
ppiLabel = QLabel("Canvas ppi")
ppiLabel.setBuddy(ppiComboBox) # label for the above combo box
ppiComboBox.setCurrentIndex(ppiList.index(self._ppi)) #set index to current value of canvas
dialogBoxLayout.setWidget(1, QFormLayout.LabelRole, ppiLabel)
dialogBoxLayout.setWidget(1, QFormLayout.FieldRole, ppiComboBox)
self.setLayout(dialogBoxLayout)
self.resize(400,300) #resize to a certain size
#todo add ok or cancel buttons
def setCanvasSize(self, size):
#for standard combo box behaviour
self._canvasSize = size
def setCanvasPPI(self, ppi):
#for standard combo box behaviour
self._ppi = ppi
def exec_(self):
#overload exec_ to add return values and delete itself(currently being tested)
super(paperDims, self).exec_()
self.deleteLater()
return self._canvasSize, self._ppi
def saveEvent(parent = None):
#utility function to generate a Qt alert window requesting the user to save the file, returns user intention on window close
alert = QMessageBox.question(parent, parent.objectName(), "All unsaved progress will be LOST!",
QMessageBox.StandardButtons(QMessageBox.Save|QMessageBox.Ignore|QMessageBox.Cancel), QMessageBox.Save)
if alert == QMessageBox.Cancel:
return False
else:
if alert == QMessageBox.Save:
if not parent.saveProject(): #the parent's saveProject method is called which returns false if saving was cancelled by the user
return False
return True
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