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from PyQt5.QtCore import Qt
from PyQt5.QtGui import QBrush
from PyQt5.QtWidgets import QGraphicsScene, QGraphicsView, QHBoxLayout, QWidget
import graphics
from .sizes import paperSizes, ppiList, sheetDimensionList
class canvas(QWidget):
def __init__(self, parent=None, size= 0, ppi= 1):
super(canvas, self).__init__(parent)
self._ppi = ppiList[ppi]
self._canvasSize = sheetDimensionList[size]
self.painter = QGraphicsScene(0, 0, *paperSizes[self.canvasSize][self.ppi])
self.painter.setSceneRect(0, 0, *paperSizes[self.canvasSize][self.ppi])
self.setMaximumSize(*paperSizes[self.canvasSize][self.ppi])
self.resize(*paperSizes[self.canvasSize][self.ppi])
self.painter.setBackgroundBrush(QBrush(Qt.white))
self.view = QGraphicsView(self.painter)
self.view.setMaximumSize(794, 1123)
self.layout = QHBoxLayout(self)
self.layout.addWidget(self.view)
self.setLayout(self.layout)
def setCanvasSize(self, size):
self.canvasSize = size
def setCanvasPPI(self, ppi):
self.ppi = ppi
@property
def canvasSize(self):
return self._canvasSize
@property
def ppi(self):
return self._ppi
@canvasSize.setter
def canvasSize(self, size):
self._canvasSize = size
if self.painter:
self.painter.setSceneRect(0, 0, *paperSizes[self.canvasSize][self.ppi])
self.setMaximumSize(*paperSizes[self.canvasSize][self.ppi])
self.resize(*paperSizes[self.canvasSize][self.ppi])
@ppi.setter
def ppi(self, ppi):
self._ppi = ppi
if self.painter:
self.painter.setSceneRect(0, 0, *paperSizes[self.canvasSize][self.ppi])
self.setMaximumSize(*paperSizes[self.canvasSize][self.ppi])
self.resize(*paperSizes[self.canvasSize][self.ppi])
@property
def dimensions(self):
return self.painter.sceneRect().width(), self.painter.sceneRect().height()
def __getstate__(self) -> dict:
return {
"_classname_": self.__class__.__name__,
"ppi": self._ppi,
"canvasSize": self._canvasSize,
"ObjectName": self.objectName(),
"items": [i.__getState__() for i in self.painter.items()]
}
def __setstate__(self, dict):
self.__init__()
self._ppi = dict['ppi']
self._canvasSize = dict['canvasSize']
self.setObjectName(dict['ObjectName'])
for item in dict['items']:
graphic = getattr(graphics, dict['_classname_'])
graphic.setstate(item)
self.painter.addItem(graphic)
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