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import pickle
import sys
from fbs_runtime.application_context.PyQt5 import ApplicationContext
from PyQt5.QtCore import QObject, Qt, pyqtSignal
from PyQt5.QtGui import QBrush, QColor, QImage, QPainter, QPalette, QPen
from PyQt5.QtWidgets import (QComboBox, QFileDialog, QFormLayout, QVBoxLayout,
QHBoxLayout, QLabel, QMainWindow, QMenu,
QPushButton, QWidget, QMdiArea, QSplitter, QGraphicsItem)
from utils.canvas import canvas
from utils.fileWindow import fileWindow
from utils.data import ppiList, sheetDimensionList
from utils import dialogs
from utils.toolbar import toolbar
from utils.app import app
import shapes
class appWindow(QMainWindow):
"""
Application entry point, subclasses QMainWindow and implements the main widget,
sets necessary window behaviour etc.
"""
def __init__(self, parent=None):
super(appWindow, self).__init__(parent)
#create the menu bar
titleMenu = self.menuBar() #fetch reference to current menu bar
# self.mainWidget.setObjectName("Main Widget")
self.menuFile = titleMenu.addMenu('File') #File Menu
self.menuFile.addAction("New", self.newProject)
self.menuFile.addAction("Open", self.openProject)
self.menuFile.addAction("Save", self.saveProject)
self.menuEdit = titleMenu.addMenu('Edit')
self.undo = self.menuEdit.addAction("Undo", lambda x=self: x.activeScene.painter.undoAction.trigger())
self.redo = self.menuEdit.addAction("Redo", lambda x=self: x.activeScene.painter.redoAction.trigger())
self.menuEdit.addAction("Show Undo Stack", lambda x=self: x.activeScene.painter.createUndoView(self) )
self.menuGenerate = titleMenu.addMenu('Generate') #Generate menu
self.menuGenerate.addAction("Image", self.saveImage)
self.menuGenerate.addAction("Report", self.generateReport)
self.mdi = QMdiArea(self) #create area for files to be displayed
self.mdi.setObjectName('mdi area')
#create toolbar and add the toolbar plus mdi to layout
self.createToolbar()
#set flags so that window doesnt look weird
self.mdi.setOption(QMdiArea.DontMaximizeSubWindowOnActivation, True)
self.mdi.setTabsClosable(True)
self.mdi.setTabsMovable(True)
self.mdi.setDocumentMode(False)
#declare main window layout
self.setCentralWidget(self.mdi)
self.resize(1280, 720) #set collapse dim
self.mdi.subWindowActivated.connect(self.tabSwitched)
def updateMenuBar(self):
# self.undo.setAction(self.activeScene.painter.undoAction)
self.undo.triggered.connect(self.activeScene.painter.undoAction.trigger())
self.redo.triggered.connect(self.activeScene.painter.redoAction.trigger())
def createToolbar(self):
#place holder for toolbar with fixed width, layout may change
self.toolbar = toolbar(self)
self.toolbar.setObjectName("Toolbar")
# self.addToolBar(Qt.LeftToolBarArea, self.toolbar)
self.addDockWidget(Qt.LeftDockWidgetArea, self.toolbar)
self.toolbar.toolbuttonClicked.connect(self.toolButtonClicked)
self.toolbar.populateToolbar(self.toolbar.toolbarItemList)
def toolButtonClicked(self, object):
currentDiagram = self.mdi.currentSubWindow().tabber.currentWidget().painter
if currentDiagram:
graphic = getattr(shapes, object['object'])(*object['args'])
graphic.setPen(QPen(Qt.black, 2))
graphic.setFlags(QGraphicsItem.ItemIsSelectable | QGraphicsItem.ItemIsMovable)
currentDiagram.addItemPlus(graphic)
def newProject(self):
#call to create a new file inside mdi area
project = fileWindow(self.mdi)
project.setObjectName("New Project")
self.mdi.addSubWindow(project)
if not project.tabList: # important when unpickling a file instead
project.newDiagram() #create a new tab in the new file
project.resizeHandler()
project.fileCloseEvent.connect(self.fileClosed) #closed file signal to switch to sub window view
project.tabChangeEvent.connect(self.updateMenuBar)
if self.count > 1: #switch to tab view if needed
self.mdi.setViewMode(QMdiArea.TabbedView)
project.show()
def openProject(self):
#show the open file dialog to open a saved file, then unpickle it.
name = QFileDialog.getOpenFileNames(self, 'Open File(s)', '', 'Process Flow Diagram (*pfd)')
if name:
for files in name[0]:
with open(files,'rb') as file:
project = pickle.load(file)
self.mdi.addSubWindow(project)
project.show()
project.resizeHandler()
project.fileCloseEvent.connect(self.fileClosed)
if self.count > 1:
# self.tabSpace.setVisible(True)
self.mdi.setViewMode(QMdiArea.TabbedView)
def saveProject(self):
#pickle all files in mdi area
for j, i in enumerate(self.activeFiles): #get list of all windows with atleast one tab
if i.tabCount:
name = QFileDialog.getSaveFileName(self, 'Save File', f'New Diagram {j}', 'Process Flow Diagram (*.pfd)')
i.saveProject(name)
else:
return False
return True
def saveImage(self):
#place holder for future implementaion
pass
def generateReport(self):
#place holder for future implementaion
pass
def tabSwitched(self, window):
#handle window switched edge case
if window:
window.resizeHandler()
def resizeEvent(self, event):
#overload resize to also handle resize on file windows inside
for i in self.mdi.subWindowList():
i.resizeHandler()
self.toolbar.resize()
super(appWindow, self).resizeEvent(event)
def closeEvent(self, event):
#save alert on window close
if len(self.activeFiles) and not dialogs.saveEvent(self):
event.ignore()
else:
event.accept()
def fileClosed(self, index):
#checks if the file tab menu needs to be removed
if self.count <= 2 :
self.mdi.setViewMode(QMdiArea.SubWindowView)
@property
def activeFiles(self):
return [i for i in self.mdi.subWindowList() if i.tabCount]
@property
def count(self):
return len(self.mdi.subWindowList())
@property
def activeScene(self):
return self.mdi.currentSubWindow().tabber.currentWidget()
#Key input handler
def keyPressEvent(self, event):
#overload key press event for custom keyboard shortcuts
if event.modifiers() and Qt.ControlModifier:
if event.key() == Qt.Key_N:
self.newProject()
elif event.key() == Qt.Key_S:
self.saveProject()
elif event.key() == Qt.Key_O:
self.openProject()
elif event.key() == Qt.Key_W:
self.close()
elif event.key() == Qt.Key_P:
if Qt.AltModifier:
self.saveImage()
else:
self.generateReport()
elif event.key() == Qt.Key_A:
#todo implement selectAll
for item in self.mdi.activeSubWindow().tabber.currentWidget().items:
item.setSelected(True)
#todo copy, paste, undo redo
else:
return
event.accept()
elif event.key() == Qt.Key_Delete or event.key() == Qt.Key_Backspace:
for item in reversed(self.mdi.activeSubWindow().tabber.currentWidget().painter.selectedItems()):
# self.mdi.currentSubWindow().tabber.currentWidget().deleteItem(item)
pass
#donot delete, to manage undo redo
if __name__ == '__main__': # 1. Instantiate ApplicationContext
main = appWindow()
main.show()
exit_code = app.app.exec_() # 2. Invoke appctxt.app.exec_()
sys.exit(exit_code)
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