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Felix Goding
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"""@package docstring
Drag button class.
This class creates a dragbutton which can be clicked, dragged and dropped.
"""
import os.path
Adam Jakobsson
committed
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtCore import Qt, QSize
Felix Goding
committed
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from PyQt5.QtGui import QIcon
class DragButton(QPushButton):
def __init__(self, name, operation, operation_path_name, window, parent = None):
self.name = name
self.__window = window
self.operation = operation
self.operation_path_name = operation_path_name
self.clicked = 0
self.pressed = False
super(DragButton, self).__init__(self.__window)
def mousePressEvent(self, event):
self._mouse_press_pos = None
self._mouse_move_pos = None
if event.button() == Qt.LeftButton:
self._mouse_press_pos = event.globalPos()
self._mouse_move_pos = event.globalPos()
for signal in self.__window.signalList:
signal.update()
self.clicked += 1
if self.clicked == 1:
self.pressed = True
self.setStyleSheet("background-color: grey; border-style: solid;\
border-color: black; border-width: 2px; border-radius: 10px")
path_to_image = os.path.join('operation_icons', self.operation_path_name + '_grey.png')
self.setIcon(QIcon(path_to_image))
self.setIconSize(QSize(50, 50))
self.__window.pressed_button.append(self)
elif self.clicked == 2:
self.clicked = 0
self.pressed = False
self.setStyleSheet("background-color: white; border-style: solid;\
border-color: black; border-width: 2px; border-radius: 10px")
path_to_image = os.path.join('operation_icons', self.operation_path_name + '.png')
self.setIcon(QIcon(path_to_image))
self.setIconSize(QSize(50, 50))
self.__window.pressed_button.remove(self)
super(DragButton, self).mousePressEvent(event)
def mouseMoveEvent(self, event):
if event.buttons() == Qt.LeftButton:
cur_pos = self.mapToGlobal(self.pos())
global_pos = event.globalPos()
diff = global_pos - self._mouse_move_pos
new_pos = self.mapFromGlobal(cur_pos + diff)
self.move(new_pos)
self._mouse_move_pos = global_pos
self.__window.update()
super(DragButton, self).mouseMoveEvent(event)
def mouseReleaseEvent(self, event):
if self._mouse_press_pos is not None:
moved = event.globalPos() - self._mouse_press_pos
if moved.manhattanLength() > 3:
event.ignore()
return
super(DragButton, self).mouseReleaseEvent(event)
def remove(self):
self.deleteLater()