def _draw_peak_values(self, painter, labels):
#mainlog.debug('_draw_peak_values : {}'.format(labels))
text_pen = QPen()
text_pen.setCapStyle(Qt.RoundCap)
text_pen.setColor(Qt.GlobalColor.white) # alpha=255=fully opaque
text_pen.setWidth(1)
fm = painter.fontMetrics()
rects = []
painter.setPen(text_pen)
# The sort allow to draw the peak values which are lower first.
# We do that to visually connect a peak value to its bar in a
# (hopefully) better way
for i in sorted( range(len(labels)), key=lambda i:self._item_coordinates(i)[1]):
x, y_top, y_below = self._item_coordinates(i)
label = labels[i]
w = fm.boundingRect(label).width()
h = fm.boundingRect(label).height()
r = QRect(self.x_centers[i] - int(w/2), self.y_base-y_top - 5 - h, w, h)
i = 0
while i < len(rects):
old_r = rects[i]
if r.intersect(old_r):
i = 0
# Move r atop old_r
r.translate(0, -(r.bottom() - old_r.y()) - 2)
else:
i += 1
rects.append(r)
self._draw_box_under_text(painter, r.x(), r.y() + h,label)
painter.drawText( r.x(), r.y() + h,label)
def rotate_clockwise_rect(self):
r = QRect(0, 0, self.CONTROLS_SIZE, self.CONTROLS_SIZE)
r.translate(
QPoint(self.box_rect.width() - self.CONTROLS_SIZE,
self.box_rect.height() - self.CONTROLS_SIZE))
return r
