def mouseMoveEvent(self, event: QtGui.QMouseEvent) -> None:
x, y = event.pos().x(), event.pos().y()
x, y = self.gr_field.pixel_to_norm_coord(x, y)
for zone in self.gr_field.zones:
if zone.coordinates_are_in_zone(x, y):
if not zone.activated:
zone.mouse_enter.emit()
zone.activated = True
else:
if zone.activated:
zone.mouse_leave.emit()
zone.activated = False
def mouseMoveEvent(self, event: QtGui.QMouseEvent) -> None:
x, y = event.pos().x(), event.pos().y()
if self.__mode == 'select' and self.__mouse_is_pressed:
self.__select_end = (x, y)
self.update()
elif self.__mode == 'grab' and self.__mouse_is_pressed:
end = (x, y)
dx = end[0] - self.__move_start[0]
dy = end[1] - self.__move_start[1]
self.zoom_x = self.__zoom_x0 - self.pixel_to_norm_rel(dx)
self.zoom_y = self.__zoom_y0 - self.pixel_to_norm_rel(dy)
self.zoomed.emit()
def mousePressEvent(self, event: QtGui.QMouseEvent) -> None:
x, y = event.pos().x(), event.pos().y()
if self.__mode == 'select':
self.__select = True
self.__select_start = (x, y)
self.__select_end = (x, y)
elif self.__mode == 'grab':
self.setCursor(Qt.CursorShape.ClosedHandCursor)
self.__move_start = (x, y)
self.__zoom_x0 = self.zoom_x
self.__zoom_y0 = self.zoom_y
else:
x, y = self.pixel_to_norm_coord(x, y)
for zone in self.zones:
if zone.coordinates_are_in_zone(x, y):
zone.clicked.emit()
self.__mouse_is_pressed = True
def mouseReleaseEvent(self, event: QtGui.QMouseEvent) -> None:
self.__mouse_is_pressed = False
if self.__mode == 'select':
self.__select_end = (event.pos().x(), event.pos().y())
width = self.__select_end[0] - self.__select_start[0]
height = self.__select_end[1] - self.__select_start[1]
self.zoom_x, self.zoom_y = self.pixel_to_norm_coord(
self.__select_start[0], self.__select_start[1])
self.zoom_x += self.margin
self.zoom_y += self.margin
if width < 0:
width = abs(width)
self.zoom_x -= self.pixel_to_norm_rel(width)
if height < 0:
height = abs(height)
self.zoom_y -= self.pixel_to_norm_rel(height)
if width <= height * self.x_range / self.y_range:
self.zoom_w = self.pixel_to_norm_rel(width)
else:
self.zoom_w = self.pixel_to_norm_rel(height * self.x_range /
self.y_range)
if self.zoom_w <= 2 * self.margin:
self.zoom_w = 0
else:
self.zoom_w -= 2 * self.margin
self.__select = False
self.zoomed.emit()
elif self.__mode == 'grab':
self.setCursor(Qt.CursorShape.OpenHandCursor)
def mouseDoubleClickEvent(self, event: QtGui.QMouseEvent) -> None:
x, y = self.pixel_to_norm_coord(event.pos().x(), event.pos().y())
for zone in self.zones:
if zone.coordinates_are_in_zone(x, y):
zone.double_clicked.emit()