def mouseMoveEvent(self, event):
if event.buttons() & Qt.LeftButton:
downPos = event.buttonDownPos(Qt.LeftButton)
if not self.__tmpLine and self.__dragStartItem and \
(downPos - event.pos()).manhattanLength() > \
QApplication.instance().startDragDistance():
# Start a line drag
line = QGraphicsLineItem(self)
start = self.__dragStartItem.boundingRect().center()
start = self.mapFromItem(self.__dragStartItem, start)
line.setLine(start.x(), start.y(),
event.pos().x(),
event.pos().y())
pen = QPen(self.palette().color(QPalette.Foreground), 4)
pen.setCapStyle(Qt.RoundCap)
line.setPen(pen)
line.show()
self.__tmpLine = line
if self.__tmpLine:
# Update the temp line
line = self.__tmpLine.line()
line.setP2(event.pos())
self.__tmpLine.setLine(line)
QGraphicsWidget.mouseMoveEvent(self, event)
def mouseMoveEvent(self, event):
if event.buttons() & Qt.LeftButton:
downPos = event.buttonDownPos(Qt.LeftButton)
if not self.__tmpLine and self.__dragStartItem and \
(downPos - event.pos()).manhattanLength() > \
QApplication.instance().startDragDistance():
# Start a line drag
line = QGraphicsLineItem(self)
start = self.__dragStartItem.boundingRect().center()
start = self.mapFromItem(self.__dragStartItem, start)
line.setLine(start.x(), start.y(),
event.pos().x(), event.pos().y())
pen = QPen(Qt.black, 4)
pen.setCapStyle(Qt.RoundCap)
line.setPen(pen)
line.show()
self.__tmpLine = line
if self.__tmpLine:
# Update the temp line
line = self.__tmpLine.line()
line.setP2(event.pos())
self.__tmpLine.setLine(line)
QGraphicsWidget.mouseMoveEvent(self, event)
class LinePlotViewBox(ViewBox):
def __init__(self, graph, enable_menu=False):
ViewBox.__init__(self, enableMenu=enable_menu)
self.graph = graph
self.setMouseMode(self.PanMode)
pen = mkPen(LinePlotStyle.SELECTION_LINE_COLOR,
width=LinePlotStyle.SELECTION_LINE_WIDTH)
self.selection_line = QGraphicsLineItem()
self.selection_line.setPen(pen)
self.selection_line.setZValue(1e9)
self.addItem(self.selection_line, ignoreBounds=True)
def update_selection_line(self, button_down_pos, current_pos):
p1 = self.childGroup.mapFromParent(button_down_pos)
p2 = self.childGroup.mapFromParent(current_pos)
self.selection_line.setLine(QLineF(p1, p2))
self.selection_line.resetTransform()
self.selection_line.show()
def mouseDragEvent(self, event, axis=None):
if self.graph.state == SELECT and axis is None:
event.accept()
if event.button() == Qt.LeftButton:
self.update_selection_line(event.buttonDownPos(), event.pos())
if event.isFinish():
self.selection_line.hide()
p1 = self.childGroup.mapFromParent(
event.buttonDownPos(event.button()))
p2 = self.childGroup.mapFromParent(event.pos())
self.graph.select_by_line(p1, p2)
else:
self.update_selection_line(
event.buttonDownPos(), event.pos())
elif self.graph.state == ZOOMING or self.graph.state == PANNING:
event.ignore()
super().mouseDragEvent(event, axis=axis)
else:
event.ignore()
def mouseClickEvent(self, event):
if event.button() == Qt.RightButton:
self.autoRange()
else:
event.accept()
self.graph.deselect_all()
class LinePlotViewBox(ViewBox):
selection_changed = Signal(np.ndarray)
def __init__(self):
super().__init__(enableMenu=False)
self._profile_items = None
self._can_select = True
self._graph_state = SELECT
self.setMouseMode(self.PanMode)
pen = mkPen(LinePlotStyle.SELECTION_LINE_COLOR,
width=LinePlotStyle.SELECTION_LINE_WIDTH)
self.selection_line = QGraphicsLineItem()
self.selection_line.setPen(pen)
self.selection_line.setZValue(1e9)
self.addItem(self.selection_line, ignoreBounds=True)
def update_selection_line(self, button_down_pos, current_pos):
p1 = self.childGroup.mapFromParent(button_down_pos)
p2 = self.childGroup.mapFromParent(current_pos)
self.selection_line.setLine(QLineF(p1, p2))
self.selection_line.resetTransform()
self.selection_line.show()
def set_graph_state(self, state):
self._graph_state = state
def enable_selection(self, enable):
self._can_select = enable
def get_selected(self, p1, p2):
if self._profile_items is None:
return np.array(False)
return line_intersects_profiles(np.array([p1.x(), p1.y()]),
np.array([p2.x(), p2.y()]),
self._profile_items)
def add_profiles(self, y):
if sp.issparse(y):
y = y.todense()
self._profile_items = np.array(
[np.vstack((np.full((1, y.shape[0]), i + 1), y[:, i].flatten())).T
for i in range(y.shape[1])])
def remove_profiles(self):
self._profile_items = None
def mouseDragEvent(self, ev, axis=None):
if self._graph_state == SELECT and axis is None and self._can_select:
ev.accept()
if ev.button() == Qt.LeftButton:
self.update_selection_line(ev.buttonDownPos(), ev.pos())
if ev.isFinish():
self.selection_line.hide()
p1 = self.childGroup.mapFromParent(
ev.buttonDownPos(ev.button()))
p2 = self.childGroup.mapFromParent(ev.pos())
self.selection_changed.emit(self.get_selected(p1, p2))
elif self._graph_state == ZOOMING or self._graph_state == PANNING:
ev.ignore()
super().mouseDragEvent(ev, axis=axis)
else:
ev.ignore()
def mouseClickEvent(self, ev):
if ev.button() == Qt.RightButton:
self.autoRange()
self.enableAutoRange()
else:
ev.accept()
self.selection_changed.emit(np.array(False))
def reset(self):
self._profile_items = None
self._can_select = True
self._graph_state = SELECT
class LinePlotViewBox(ViewBox):
selection_changed = Signal(np.ndarray)
def __init__(self):
super().__init__(enableMenu=False)
self._profile_items = None
self._can_select = True
self._graph_state = SELECT
self.setMouseMode(self.PanMode)
pen = mkPen(LinePlotStyle.SELECTION_LINE_COLOR,
width=LinePlotStyle.SELECTION_LINE_WIDTH)
self.selection_line = QGraphicsLineItem()
self.selection_line.setPen(pen)
self.selection_line.setZValue(1e9)
self.addItem(self.selection_line, ignoreBounds=True)
def update_selection_line(self, button_down_pos, current_pos):
p1 = self.childGroup.mapFromParent(button_down_pos)
p2 = self.childGroup.mapFromParent(current_pos)
self.selection_line.setLine(QLineF(p1, p2))
self.selection_line.resetTransform()
self.selection_line.show()
def set_graph_state(self, state):
self._graph_state = state
def enable_selection(self, enable):
self._can_select = enable
def get_selected(self, p1, p2):
if self._profile_items is None:
return np.array(False)
return line_intersects_profiles(np.array([p1.x(), p1.y()]),
np.array([p2.x(), p2.y()]),
self._profile_items)
def add_profiles(self, y):
if sp.issparse(y):
y = y.todense()
self._profile_items = np.array(
[np.vstack((np.full((1, y.shape[0]), i + 1), y[:, i].flatten())).T
for i in range(y.shape[1])])
def remove_profiles(self):
self._profile_items = None
def mouseDragEvent(self, event, axis=None):
if self._graph_state == SELECT and axis is None and self._can_select:
event.accept()
if event.button() == Qt.LeftButton:
self.update_selection_line(event.buttonDownPos(), event.pos())
if event.isFinish():
self.selection_line.hide()
p1 = self.childGroup.mapFromParent(
event.buttonDownPos(event.button()))
p2 = self.childGroup.mapFromParent(event.pos())
self.selection_changed.emit(self.get_selected(p1, p2))
elif self._graph_state == ZOOMING or self._graph_state == PANNING:
event.ignore()
super().mouseDragEvent(event, axis=axis)
else:
event.ignore()
def mouseClickEvent(self, event):
if event.button() == Qt.RightButton:
self.autoRange()
self.enableAutoRange()
else:
event.accept()
self.selection_changed.emit(np.array(False))
def reset(self):
self._profile_items = None
self._can_select = True
self._graph_state = SELECT
