def port_scene_position(self,
port_type: PortType,
index: int,
t: QTransform = None) -> QPointF:
"""
Port scene position
Parameters
----------
port_type : PortType
index : int
t : QTransform
Returns
-------
value : QPointF
"""
if t is None:
t = QTransform()
step = self._entry_height + self._spacing
total_height = float(self.caption_height) + step * index
# TODO_UPSTREAM: why?
total_height += step / 2.0
if port_type == PortType.output:
x = self._width + self._style.connection_point_diameter
result = QPointF(x, total_height)
elif port_type == PortType.input:
x = -float(self._style.connection_point_diameter)
result = QPointF(x, total_height)
else:
raise ValueError(port_type)
return t.map(result)
def draw_icon(self, painter):
path = QPainterPath(QPointF(0, 0.3))
path.lineTo(0, 0.9)
path.lineTo(1, 0.3)
path.lineTo(1, 0.9)
path.closeSubpath()
painter.drawPath(path)
painter.drawLine(QPointF(0.5, 0.6), QPointF(0.5, 0.15))
# Draw the arrow end-caps
painter.setBrush(QBrush(QColor(0, 0, 0)))
top_arrow_point = QPointF(0.65, 0.36)
arrow = QPolygonF([
QPointF(-0.09, 0.0),
QPointF(-0.005, 0.0),
QPointF(-0.005, 0.8),
QPointF(0.005, 0.8),
QPointF(0.005, 0.0),
QPointF(0.09, 0.0),
QPointF(0.00, -0.25)
])
t = QTransform()
t.rotate(35)
top_arrow_r = t.map(arrow)
arrow_l = top_arrow_r.translated(top_arrow_point)
painter.drawPolygon(arrow_l)
painter.setBrush(self._interlock_brush)
painter.drawRect(QRectF(0.3, 0, 0.4, 0.15))
def draw_icon(self, painter):
painter.drawEllipse(QPointF(0.5, 0.5), 0.5, 0.5)
painter.drawChord(QRectF(0.0, 0.0, 1.0, 1.0), 45 * 16, -120 * 16)
painter.drawChord(QRectF(0.0, 0.0, 1.0, 1.0), 135 * 16, 120 * 16)
bottom_arrow_point = QPointF(0.5, 0.8)
painter.drawLine(bottom_arrow_point, QPointF(0.5, 0.7))
curve_start = QPointF(0.5, 0.7)
bend_angle = 25
curve_end_l = QPointF(
0.4 * math.cos(math.radians(90 + bend_angle)) + 0.5,
-0.4 * math.sin(math.radians(90 + bend_angle)) + 0.5)
c1 = QPointF(0.5, 0.4)
path = QPainterPath(curve_start)
path.quadTo(c1, curve_end_l)
painter.drawPath(path)
curve_end_r = QPointF(
0.4 * math.cos(math.radians(90 - bend_angle)) + 0.5,
-0.4 * math.sin(math.radians(90 - bend_angle)) + 0.5)
path = QPainterPath(curve_start)
path.quadTo(c1, curve_end_r)
painter.drawPath(path)
# Draw the arrow end-caps
painter.setBrush(QBrush(QColor(0, 0, 0)))
arrow = QPolygonF(
[QPointF(-0.025, 0.0),
QPointF(0.025, 0.0),
QPointF(0.0, 0.025)])
painter.drawPolygon(arrow.translated(bottom_arrow_point))
t = QTransform()
t.rotate(180.0 - 25.0)
arrow_l = t.map(arrow)
arrow_l = arrow_l.translated(curve_end_l)
painter.drawPolygon(arrow_l)
t = QTransform()
t.rotate(180.0 + 25.0)
arrow_r = t.map(arrow)
arrow_r = arrow_r.translated(curve_end_r)
painter.drawPolygon(arrow_r)
def draw_icon(self, painter):
painter.drawEllipse(QPointF(0.5, 0.5), 0.5, 0.5)
painter.drawChord(QRectF(0.0, 0.0, 1.0, 1.0), 90 * 16, -100 * 16)
painter.drawChord(QRectF(0.0, 0.0, 1.0, 1.0), 135 * 16, 100 * 16)
# Draw the arrow end-caps
painter.setBrush(QBrush(QColor(0, 0, 0)))
top_arrow_point = QPointF(0.35, 0.15)
arrow = QPolygonF([
QPointF(-0.08, 0.0),
QPointF(-0.005, 0.0),
QPointF(-0.005, 0.15),
QPointF(0.005, 0.15),
QPointF(0.005, 0.0),
QPointF(0.08, 0.0),
QPointF(0.00, -0.08)
])
t = QTransform()
t.rotate(-25)
top_arrow_r = t.map(arrow)
arrow_l = top_arrow_r.translated(top_arrow_point)
painter.drawPolygon(arrow_l)
bottom_left_arrow_point = QPointF(0.35, 0.89)
t = QTransform()
t.rotate(180.0 + 25.0)
arrow_r = t.map(arrow)
arrow_r = arrow_r.translated(bottom_left_arrow_point)
painter.drawPolygon(arrow_r)
bottom_right_arrow_point = QPointF(0.85, 0.65)
t = QTransform()
t.rotate(180.0 - 65.0)
arrow_r = t.map(arrow)
arrow_r = arrow_r.translated(bottom_right_arrow_point)
painter.drawPolygon(arrow_r)
def qwtDrawPixmapSymbols(painter, points, numPoints, symbol):
size = symbol.size()
if size.isEmpty():
size = symbol.pixmap().size()
transform = QTransform(painter.transform())
if transform.isScaling():
r = QRect(0, 0, size.width(), size.height())
size = transform.mapRect(r).size()
pm = QPixmap(symbol.pixmap())
if pm.size() != size:
pm = pm.scaled(size)
pinPoint = QPointF(0.5 * size.width(), 0.5 * size.height())
if symbol.isPinPointEnabled():
pinPoint = symbol.pinPoint()
painter.resetTransform()
for pos in points:
pos = QPointF(transform.map(pos)) - pinPoint
QwtPainter.drawPixmap(painter, QRect(pos.toPoint(), pm.size()), pm)
app = QApplication([]) # --- Construct custom symbol --- path = QPainterPath() path.moveTo(0, 8) path.lineTo(0, 5) path.lineTo(-3, 5) path.lineTo(0, 0) path.lineTo(3, 5) path.lineTo(0, 5) transform = QTransform() transform.rotate(-30.0) path = transform.map(path) pen = QPen(Qt.black, 2) pen.setJoinStyle(Qt.MiterJoin) symbol = QwtSymbol() symbol.setPen(pen) symbol.setBrush(Qt.red) symbol.setPath(path) symbol.setPinPoint(QPointF(0.0, 0.0)) symbol.setSize(10, 14) # --- Test it within a simple plot --- curve = QwtPlotCurve() curve_pen = QPen(Qt.blue)
