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import sys
from fbs_runtime.application_context.PyQt5 import ApplicationContext
from PyQt5.QtCore import QObject, Qt, pyqtSignal, QSize, QPoint
from PyQt5.QtGui import QBrush, QColor, QImage, QPainter, QPalette, QPen, QKeySequence
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, settings, load
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
self.createMenuBar()
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)
self.readSettings()
def createMenuBar(self):
# Fetches a reference to the menu bar in the main window, and adds actions to it.
titleMenu = self.menuBar() #fetch reference to current menu bar
self.menuFile = titleMenu.addMenu('File') #File Menu
newAction = self.menuFile.addAction("New", self.newProject)
openAction = self.menuFile.addAction("Open", self.openProject)
saveAction = self.menuFile.addAction("Save", self.saveProject)
newAction.setShortcut(QKeySequence.New)
openAction.setShortcut(QKeySequence.Open)
saveAction.setShortcut(QKeySequence.Save)
self.menuEdit = titleMenu.addMenu('Edit')
undoAction = self.undo = self.menuEdit.addAction("Undo", lambda x=self: x.activeScene.painter.undoAction.trigger())
redoAction = self.redo = self.menuEdit.addAction("Redo", lambda x=self: x.activeScene.painter.redoAction.trigger())
undoAction.setShortcut(QKeySequence.Undo)
redoAction.setShortcut(QKeySequence.Redo)
self.menuEdit.addAction("Show Undo Stack", lambda x=self: x.activeScene.painter.createUndoView(self) )
self.menuEdit.addSeparator()
self.menuEdit.addAction("Add new symbols", self.addSymbolWindow)
self.menuGenerate = titleMenu.addMenu('Generate') #Generate menu
imageAction = self.menuGenerate.addAction("Image", self.saveImage)
reportAction = self.menuGenerate.addAction("Report", self.generateReport)
imageAction.setShortcut(QKeySequence("Ctrl+P"))
reportAction.setShortcut(QKeySequence("Ctrl+R"))
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()
def toolButtonClicked(self, object):
# To add the corresponding symbol for the clicked button to active scene.
if self.mdi.currentSubWindow():
currentDiagram = self.mdi.currentSubWindow().tabber.currentWidget().painter
if currentDiagram:
graphic = getattr(shapes, object['object'])(*map(lambda x: int(x) if x.isdigit() else x, object['args']))
graphic.setPos(50, 50)
currentDiagram.addItemPlus(graphic)
def addSymbolWindow(self):
# Opens the add symbol window when requested
from utils.custom import ShapeDialog
ShapeDialog(self).exec()
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.fileCloseEvent.connect(self.fileClosed) #closed file signal to switch to sub window view
if self.count > 0: #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,'r') as file:
projectData = load(file)
project = FileWindow(self.mdi)
self.mdi.addSubWindow(project)
#create blank window and set its state
project.__setstate__(projectData)
project.resizeHandler()
project.fileCloseEvent.connect(self.fileClosed)
project.show()
if self.count > 1:
# self.tabSpace.setVisible(True)
self.mdi.setViewMode(QMdiArea.TabbedView)
def saveProject(self):
#serialize 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 and window.tabCount:
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()
self.writeSettings()
def fileClosed(self, index):
#checks if the file tab menu needs to be removed
if self.count <= 1 :
self.mdi.setViewMode(QMdiArea.SubWindowView)
def writeSettings(self):
# write window state on window close
settings.beginGroup("MainWindow")
settings.setValue("maximized", self.isMaximized())
if not self.isMaximized():
settings.setValue("size", self.size())
settings.setValue("pos", self.pos())
settings.endGroup()
def readSettings(self):
# read window state when app launches
settings.beginGroup("MainWindow")
self.resize(settings.value("size", QSize(1280, 720)))
self.move(settings.value("pos", QPoint(320, 124)))
if settings.value("maximized", False, type=bool):
self.showMaximized()
settings.endGroup()
#useful one liner properties for getting data
@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() & Qt.ControlModifier:
if 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_Q:
if self.mdi.activeSubWindow() and self.mdi.activeSubWindow().tabber.currentWidget():
for item in self.mdi.activeSubWindow().tabber.currentWidget().painter.selectedItems():
item.rotation -= 1
elif event.key() == Qt.Key_E:
if self.mdi.activeSubWindow() and self.mdi.activeSubWindow().tabber.currentWidget():
for item in self.mdi.activeSubWindow().tabber.currentWidget().painter.selectedItems():
item.rotation += 1
if __name__ == '__main__': # 1. Instantiate ApplicationContext
main = appWindow()
main.show()
exit_code = app.app.exec_() # 2. Invoke app.app.exec_()
sys.exit(exit_code)
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