b.santos/cursopython2023
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Calculadora: os Signals de teclas digitadas aos Slots corretos

Browse Source
This commit is contained in:
Luiz Otávio
2023-03-04 09:01:28 -03:00
parent f53db75afc
commit bfb445ad4f
1 changed files with 16 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
aula202-calculadora/buttons.py
View File

@@ -59,19 +59,12 @@ class ButtonsGrid(QGridLayout):
self._equation = value self._equation = value
self.info.setText(value) self.info.setText(value)
def vouApagarVocê(self, *args):
print(
'Signal recebido por "vouApagarVocê" em',
type(self).__name__,
args,
)
def _makeGrid(self): def _makeGrid(self):
self.display.eqPressed.connect(self.vouApagarVocê) self.display.eqPressed.connect(self._eq)
self.display.delPressed.connect(self.display.backspace) self.display.delPressed.connect(self.display.backspace)
self.display.clearPressed.connect(self.vouApagarVocê) self.display.clearPressed.connect(self._clear)
self.display.inputPressed.connect(self.vouApagarVocê) self.display.inputPressed.connect(self._insertToDisplay)
self.display.operatorPressed.connect(self.vouApagarVocê) self.display.operatorPressed.connect(self._configLeftOp)
for rowNumber, rowData in enumerate(self._gridMask): for rowNumber, rowData in enumerate(self._gridMask):
for colNumber, buttonText in enumerate(rowData): for colNumber, buttonText in enumerate(rowData):
@@ -82,7 +75,7 @@ class ButtonsGrid(QGridLayout):
self._configSpecialButton(button) self._configSpecialButton(button)
self.addWidget(button, rowNumber, colNumber) self.addWidget(button, rowNumber, colNumber)
slot = self._makeSlot(self._insertButtonTextToDisplay, button) slot = self._makeSlot(self._insertToDisplay, buttonText)
self._connectButtonClicked(button, slot) self._connectButtonClicked(button, slot)
def _connectButtonClicked(self, button, slot): def _connectButtonClicked(self, button, slot):
@@ -100,27 +93,29 @@ class ButtonsGrid(QGridLayout):
if text in '+-/*^': if text in '+-/*^':
self._connectButtonClicked( self._connectButtonClicked(
button, button,
self._makeSlot(self._operatorClicked, button) self._makeSlot(self._configLeftOp, button)
) )
if text == '=': if text == '=':
self._connectButtonClicked(button, self._eq) self._connectButtonClicked(button, self._eq)
@Slot()
def _makeSlot(self, func, *args, **kwargs): def _makeSlot(self, func, *args, **kwargs):
@ Slot(bool) @ Slot(bool)
def realSlot(_): def realSlot(_):
func(*args, **kwargs) func(*args, **kwargs)
return realSlot return realSlot
def _insertButtonTextToDisplay(self, button): @Slot()
buttonText = button.text() def _insertToDisplay(self, text):
newDisplayValue = self.display.text() + buttonText newDisplayValue = self.display.text() + text
if not isValidNumber(newDisplayValue): if not isValidNumber(newDisplayValue):
return return
self.display.insert(buttonText) self.display.insert(text)
@Slot()
def _clear(self): def _clear(self):
self._left = None self._left = None
self._right = None self._right = None
@@ -128,8 +123,8 @@ class ButtonsGrid(QGridLayout):
self.equation = self._equationInitialValue self.equation = self._equationInitialValue
self.display.clear() self.display.clear()
def _operatorClicked(self, button): @Slot()
buttonText = button.text() # +-/* (etc...) def _configLeftOp(self, text):
displayText = self.display.text() # Deverá ser meu número _left displayText = self.display.text() # Deverá ser meu número _left
self.display.clear() # Limpa o display self.display.clear() # Limpa o display
@@ -144,9 +139,10 @@ class ButtonsGrid(QGridLayout):
if self._left is None: if self._left is None:
self._left = float(displayText) self._left = float(displayText)
self._op = buttonText self._op = text
self.equation = f'{self._left} {self._op} ??' self.equation = f'{self._left} {self._op} ??'
@Slot()
def _eq(self): def _eq(self):
displayText = self.display.text() displayText = self.display.text()