def resize_scene(self):
center_x = self.mapToScene(
QtCore.QPoint(self.viewport().width() / 2,
self.viewport().height() / 2)).x()
center_y = self.mapToScene(
QtCore.QPoint(self.viewport().width() / 2,
self.viewport().height() / 2)).y()
w = self.viewport().width() / self.current_zoom * 2 + 25000
h = self.viewport().height() / self.current_zoom * 2 + 25000
self.scene().setSceneRect(
QtCore.QRectF(center_x - w / 2, center_y - h / 2, w, h))
show_detail = True if self.current_zoom >= 0.5 else False
point1 = self.mapToScene(QtCore.QPoint(0, 0))
point2 = self.mapToScene(
QtCore.QPoint(self.viewport().width(),
self.viewport().height()))
rect = QtCore.QRectF(point1, point2)
for version_node in self.nodes():
if hasattr(version_node, 'version_widget'):
version_node.version_widget.setVisible(show_detail)
else:
if rect.contains(version_node.pos()) and show_detail:
# version_node.start_show_version_widget()
version_node.show_version_widget()
QtCore.QCoreApplication.processEvents()
for knob in version_node.knobs():
knob.setVisible(show_detail)
for tag in version_node.tags():
if tag.auto_hide:
tag.setVisible(show_detail)
def paintEvent(self, event):
super(AttachmentLabel, self).paintEvent(event)
if self.text() != '':
painter = QtGui.QPainter(self)
painter.drawLine(QtCore.QPoint(0,
self.height() - 1),
QtCore.QPoint(self.width(),
self.height() - 1))
def drawBackground(self, painter, rect):
painter.setBrush(QtGui.QBrush(self.fillColor))
painter.setPen(QtGui.QPen(self.lineColor))
painter.drawRect(rect)
lines = []
scale = max(int(1 / self.current_zoom / 2), 1)
line_w = 200 * scale
line_h = 80 * scale
point1 = self.mapToScene(QtCore.QPoint(0, 0))
point2 = self.mapToScene(
QtCore.QPoint(self.viewport().width(),
self.viewport().height()))
# for i in range(int(point1.y() / line_h), int(self.scene().height() / line_h)):
for i in range(int(point1.y() / line_h), int(point2.y() / line_h)):
lines.append(
QtCore.QLineF(
QtCore.QPoint(rect.x(), i * line_h),
QtCore.QPoint(rect.x() + rect.width(), i * line_h)))
# for i in range(int(self.scene().sceneRect().x()), int(self.scene().width() / line_w)):
for i in range(int(point1.x() / line_w), int(point2.x() / line_w)):
lines.append(
QtCore.QLineF(
QtCore.QPoint(i * line_w, rect.y()),
QtCore.QPoint(i * line_w,
rect.y() + rect.height())))
painter.drawLines(lines)
painter.setPen(QtGui.QPen(QtGui.QColor(80, 80, 60, 50)))
painter.drawLine(
QtCore.QLineF(QtCore.QPoint(rect.x(), 0),
QtCore.QPoint(rect.x() + rect.width(), 0)))
painter.drawLine(
QtCore.QLineF(QtCore.QPoint(0, rect.y()),
QtCore.QPoint(0,
rect.y() + rect.height())))
def mouseMoveEvent(self, event):
if self.panning:
mouse_move = event.pos() - self.prevPos
newCenter = QtCore.QPointF(
self.prev_center.x() - mouse_move.x() / self.current_zoom,
self.prev_center.y() - mouse_move.y() / self.current_zoom)
self.centerOn(newCenter)
show_detail = True if self.current_zoom >= 0.5 else False
if show_detail:
point1 = self.mapToScene(QtCore.QPoint(0, 0))
point2 = self.mapToScene(
QtCore.QPoint(self.viewport().width(),
self.viewport().height()))
rect = QtCore.QRectF(point1, point2)
for version_node in self.nodes():
if rect.contains(version_node.pos()) and not hasattr(
version_node, 'version_widget'):
version_node.start_show_version_widget()
# print version_node.pos(), point1, point2
return
super(GraphicsView, self).mouseMoveEvent(event)
def mousePressEvent(self, event):
"""Initiate custom panning using middle mouse button."""
selected_items = self.scene().selectedItems()
if event.button() == QtCore.Qt.MiddleButton:
self.setDragMode(QtWidgets.QGraphicsView.NoDrag)
self.panning = True
self.prevPos = event.pos()
self.prev_center = self.mapToScene(
QtCore.QPoint(self.viewport().width() / 2,
self.viewport().height() / 2))
self.setCursor(QtCore.Qt.SizeAllCursor)
elif event.button() == QtCore.Qt.LeftButton:
self.setDragMode(QtWidgets.QGraphicsView.RubberBandDrag)
super(GraphicsView, self).mousePressEvent(event)
if event.button() == QtCore.Qt.MiddleButton:
for item in selected_items:
item.setSelected(True)
self.highlight_connection()