def add_crosshair(plot, render_measurements, color=Qt.gray):
pen = mkPen(color=QColor(color), width=1)
vline = InfiniteLine(angle=90, movable=False, pen=pen)
hline = InfiniteLine(angle=0, movable=False, pen=pen)
plot.addItem(vline, ignoreBounds=True)
plot.addItem(hline, ignoreBounds=True)
current_coordinates = None
reference_coordinates = None
def do_render():
render_measurements(current_coordinates, reference_coordinates)
def update(pos):
nonlocal current_coordinates
if plot.sceneBoundingRect().contains(pos):
mouse_point = plot.getViewBox().mapSceneToView(pos)
current_coordinates = mouse_point.x(), mouse_point.y()
vline.setPos(mouse_point.x())
hline.setPos(mouse_point.y())
do_render()
def set_reference(ev):
nonlocal reference_coordinates
if ev.button() == Qt.LeftButton and current_coordinates is not None:
reference_coordinates = current_coordinates
do_render()
plot.scene().sigMouseMoved.connect(update)
plot.scene().sigMouseClicked.connect(set_reference)
python类gray()的实例源码
def paint(self, painter, option, widget):
painter.setBrush(Qt.gray)
painter.drawRect(-20, -58, 40, 2) # Front axel
painter.drawRect(-20, 7, 40, 2) # Rear axel
painter.setBrush(self.color)
painter.drawRect(-25, -79, 50, 10) # Front wing
painter.drawEllipse(-25, -48, 50, 20) # Side pods
painter.drawRect(-25, -38, 50, 35) # Side pods
painter.drawRect(-5, 9, 10, 10) # Back pod
painter.drawEllipse(-10, -81, 20, 100) # Main body
painter.drawRect(-17, 19, 34, 15) # Rear wing
painter.setBrush(Qt.black)
painter.drawPie(-5, -51, 10, 15, 0, 180 * 16)
painter.drawRect(-5, -44, 10, 10) # Cockpit
painter.save()
painter.translate(-20, -58)
painter.rotate(self.wheelsAngle)
painter.drawRect(-10, -7, 10, 15) # Front left
painter.restore()
painter.save()
painter.translate(20, -58)
painter.rotate(self.wheelsAngle)
painter.drawRect(0, -7, 10, 15) # Front right
painter.restore()
painter.drawRect(-30, 0, 12, 17) # Rear left
painter.drawRect(19, 0, 12, 17) # Rear right
def paintEvent(self, event):
painter = QPainter(self)
painter.fillRect(event.rect(), Qt.white)
painter.setFont(self.displayFont)
redrawRect = event.rect()
beginRow = redrawRect.top() // self.squareSize
endRow = redrawRect.bottom() // self.squareSize
beginColumn = redrawRect.left() // self.squareSize
endColumn = redrawRect.right() // self.squareSize
painter.setPen(Qt.gray)
for row in range(beginRow, endRow + 1):
for column in range(beginColumn, endColumn + 1):
painter.drawRect(column * self.squareSize,
row * self.squareSize, self.squareSize,
self.squareSize)
fontMetrics = QFontMetrics(self.displayFont)
painter.setPen(Qt.black)
for row in range(beginRow, endRow + 1):
for column in range(beginColumn, endColumn + 1):
key = row * self.columns + column
painter.setClipRect(column * self.squareSize,
row * self.squareSize, self.squareSize,
self.squareSize)
if key == self.lastKey:
painter.fillRect(column * self.squareSize + 1,
row * self.squareSize + 1, self.squareSize,
self.squareSize, Qt.red)
key_ch = self._chr(key)
painter.drawText(column * self.squareSize + (self.squareSize / 2) - fontMetrics.width(key_ch) / 2,
row * self.squareSize + 4 + fontMetrics.ascent(),
key_ch)
def paint(self, painter, option, widget):
painter.setBrush(Qt.gray)
painter.drawRect(-20, -58, 40, 2) # Front axel
painter.drawRect(-20, 7, 40, 2) # Rear axel
painter.setBrush(self.color)
painter.drawRect(-25, -79, 50, 10) # Front wing
painter.drawEllipse(-25, -48, 50, 20) # Side pods
painter.drawRect(-25, -38, 50, 35) # Side pods
painter.drawRect(-5, 9, 10, 10) # Back pod
painter.drawEllipse(-10, -81, 20, 100) # Main body
painter.drawRect(-17, 19, 34, 15) # Rear wing
painter.setBrush(Qt.black)
painter.drawPie(-5, -51, 10, 15, 0, 180 * 16)
painter.drawRect(-5, -44, 10, 10) # Cockpit
painter.save()
painter.translate(-20, -58)
painter.rotate(self.wheelsAngle)
painter.drawRect(-10, -7, 10, 15) # Front left
painter.restore()
painter.save()
painter.translate(20, -58)
painter.rotate(self.wheelsAngle)
painter.drawRect(0, -7, 10, 15) # Front right
painter.restore()
painter.drawRect(-30, 0, 12, 17) # Rear left
painter.drawRect(19, 0, 12, 17) # Rear right
def paintEvent(self, event):
painter = QPainter(self)
painter.fillRect(event.rect(), Qt.white)
painter.setFont(self.displayFont)
redrawRect = event.rect()
beginRow = redrawRect.top() // self.squareSize
endRow = redrawRect.bottom() // self.squareSize
beginColumn = redrawRect.left() // self.squareSize
endColumn = redrawRect.right() // self.squareSize
painter.setPen(Qt.gray)
for row in range(beginRow, endRow + 1):
for column in range(beginColumn, endColumn + 1):
painter.drawRect(column * self.squareSize,
row * self.squareSize, self.squareSize,
self.squareSize)
fontMetrics = QFontMetrics(self.displayFont)
painter.setPen(Qt.black)
for row in range(beginRow, endRow + 1):
for column in range(beginColumn, endColumn + 1):
key = row * self.columns + column
painter.setClipRect(column * self.squareSize,
row * self.squareSize, self.squareSize,
self.squareSize)
if key == self.lastKey:
painter.fillRect(column * self.squareSize + 1,
row * self.squareSize + 1, self.squareSize,
self.squareSize, Qt.red)
key_ch = self._chr(key)
painter.drawText(column * self.squareSize + (self.squareSize / 2) - fontMetrics.width(key_ch) / 2,
row * self.squareSize + 4 + fontMetrics.ascent(),
key_ch)
def setStatusColor(self, rowIndex):
"""????????"""
item = self.tableWidget.item(rowIndex, 6)
if item.text() == "normal":
item.setForeground(Qt.darkGreen)
elif item.text() == "update":
item.setForeground(Qt.darkRed)
elif item.text() == "error":
item.setForeground(Qt.darkYellow)
elif item.text() == "none":
item.setForeground(Qt.gray)
def paint(self, painter, option, widget):
painter.setBrush(Qt.gray)
painter.drawRect(-20, -58, 40, 2) # Front axel
painter.drawRect(-20, 7, 40, 2) # Rear axel
painter.setBrush(self.color)
painter.drawRect(-25, -79, 50, 10) # Front wing
painter.drawEllipse(-25, -48, 50, 20) # Side pods
painter.drawRect(-25, -38, 50, 35) # Side pods
painter.drawRect(-5, 9, 10, 10) # Back pod
painter.drawEllipse(-10, -81, 20, 100) # Main body
painter.drawRect(-17, 19, 34, 15) # Rear wing
painter.setBrush(Qt.black)
painter.drawPie(-5, -51, 10, 15, 0, 180 * 16)
painter.drawRect(-5, -44, 10, 10) # Cockpit
painter.save()
painter.translate(-20, -58)
painter.rotate(self.wheelsAngle)
painter.drawRect(-10, -7, 10, 15) # Front left
painter.restore()
painter.save()
painter.translate(20, -58)
painter.rotate(self.wheelsAngle)
painter.drawRect(0, -7, 10, 15) # Front right
painter.restore()
painter.drawRect(-30, 0, 12, 17) # Rear left
painter.drawRect(19, 0, 12, 17) # Rear right
def paintEvent(self, event):
painter = QPainter(self)
painter.fillRect(event.rect(), Qt.white)
painter.setFont(self.displayFont)
redrawRect = event.rect()
beginRow = redrawRect.top() // self.squareSize
endRow = redrawRect.bottom() // self.squareSize
beginColumn = redrawRect.left() // self.squareSize
endColumn = redrawRect.right() // self.squareSize
painter.setPen(Qt.gray)
for row in range(beginRow, endRow + 1):
for column in range(beginColumn, endColumn + 1):
painter.drawRect(column * self.squareSize,
row * self.squareSize, self.squareSize,
self.squareSize)
fontMetrics = QFontMetrics(self.displayFont)
painter.setPen(Qt.black)
for row in range(beginRow, endRow + 1):
for column in range(beginColumn, endColumn + 1):
key = row * self.columns + column
painter.setClipRect(column * self.squareSize,
row * self.squareSize, self.squareSize,
self.squareSize)
if key == self.lastKey:
painter.fillRect(column * self.squareSize + 1,
row * self.squareSize + 1, self.squareSize,
self.squareSize, Qt.red)
key_ch = self._chr(key)
painter.drawText(column * self.squareSize + (self.squareSize / 2) - fontMetrics.width(key_ch) / 2,
row * self.squareSize + 4 + fontMetrics.ascent(),
key_ch)
def __init__(self, parent=None):
super().__init__(parent)
width, height = 800, 800
self.setGeometry(width, height, width, height)
# configs, can be changed at runtime
self.circle_line_color = Qt.gray
self.crosshair_line_color = Qt.gray
self.text_label_color = Qt.darkGreen
self.measured_distances_color = Qt.green
self.circle_count = 10
self.dot_width = 10
self.line_width = 1
self.distance_measurement_angle = 15
self.measurement_angle = 10 # degrees that one sensor covers
self.fade_out_time = 4 # older measurements will fade out over this time
self.add_text_labels = False
# data
self.measurements = []
self.added_time = dict() # measurement -> timestamp
# drawing timer
self.timer = QTimer()
self.timer.setInterval(80)
self.timer.timeout.connect(self.draw_radar)
self.timer.start()
# internal canvas setup
self.layout = QHBoxLayout()
self.setLayout(self.layout)
self.scene = QGraphicsScene()
self.scene.setSceneRect(0, 0, width, height)
self.canvas = QGraphicsView()
self.canvas.setRenderHint(QPainter.Antialiasing)
self.canvas.setFixedSize(width, height)
self.canvas.setAlignment(Qt.AlignLeft)
self.canvas.setScene(self.scene)
self.canvas.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.canvas.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.layout.addWidget(self.canvas)
# initial rendering
self.draw_radar()
