def paintEvent(self, event):
painter = QPainter()
painter.begin(self)
painter.setRenderHint(QPainter.Antialiasing)
# Get coordinates for the window
size_window = self.size()
xcenter = size_window.width() // 2
ycenter = size_window.height() // 2
font = painter.font()
metrics = QFontMetrics(font)
font_height = metrics.capHeight()
width_n = metrics.width("N")
width_s = metrics.width("S")
width_w = metrics.width("W")
width_e = metrics.width("E")
extent = min(size_window.width() - width_w - width_e, size_window.height() - 2 * font_height)
# Draw labels
painter.drawText(xcenter - width_n // 2, ycenter - extent // 2, "N")
painter.drawText(xcenter - width_s // 2, ycenter + extent // 2 + font_height, "S")
painter.drawText(xcenter - extent // 2 - width_w + 2, ycenter + font_height // 2, "W")
painter.drawText(xcenter + extent // 2, ycenter + font_height // 2, "E")
# Draw coordinate system
diameter = extent - 8
radius = diameter // 2
painter.drawEllipse(xcenter - radius, ycenter - radius, diameter, diameter)
diameter23 = diameter * 2 // 3
radius23 = diameter23 // 2
painter.drawEllipse(xcenter - radius23, ycenter - radius23, diameter23, diameter23)
diameter13 = diameter // 3
radius13 = diameter13 // 2
painter.drawEllipse(xcenter - radius13, ycenter - radius13, diameter13, diameter13)
# Draw satellites
brushGps = QBrush(self.get_color("blue"))
brushGlonass = QBrush(self.get_color("red"))
brushBeidou = QBrush(self.get_color("orange"))
brushGalileo = QBrush(self.get_color("green"))
sat_radius = 7
for sat in self.satellites_tracked:
# Make radius linear in elevation
if sat.sv_number in self.satellites_used:
r = radius * (180 - 2 * sat.elevation) // 180
if r < 0:
r = 0
x = xcenter + int(r * math.sin(sat.azimuth * math.pi / 180.0))
y = ycenter - int(r * math.cos(sat.azimuth * math.pi / 180.0))
if 1*64 <= sat.sv_number < 2*64:
brush = brushGlonass
elif 2*64 <= sat.sv_number < 3*64:
brush = brushBeidou
elif 3*64 <= sat.sv_number < 4*64:
brush = brushGalileo
else:
brush = brushGps
painter.setBrush(brush)
painter.drawEllipse(x - sat_radius // 2, y - sat_radius // 2, sat_radius, sat_radius)
painter.end()
def paintEvent(self, event):
"""Override paint event to additionally paint the current value."""
super().paintEvent(event)
self._init_style()
text = str(self.value())
rect = self.geometry()
painter = QPainter(self)
font_metrics = QFontMetrics(self.font())
x = (rect.width() - font_metrics.width(text)) // 2
y = rect.height() - (rect.height() - font_metrics.capHeight()) // 2
painter.drawText(x, y, text)
def update_adjusted(self, font=None):
if font is None:
font = self.font_family.currentFont()
if self.auto_size.isChecked():
font_size = self.font_size.value()
font.setPixelSize(font_size)
metrics = QFontMetrics(font)
rect = metrics.boundingRect(self.edit_text.text())
print('Font:', font.family())
print('Height:', rect.height(), rect.top(), '<->',
rect.bottom(), 'CapHeight:', metrics.capHeight(), 'Ascent:',
metrics.ascent(), 'FontSize:', font_size)
over_ascent = metrics.ascent() - font_size
print('OverAscent:', over_ascent)
adjusted_size = font_size - over_ascent
self.adjusted_size = adjusted_size
self.adjusted_size_label.setText(
'Adjusted size: {0}px'.format(adjusted_size))
else:
self.adjusted_size_label.setText('')
