class SignalThread(QThread):
def __init__(self, parent=None):
QThread.__init__(self, parent)
self.waitcond = QWaitCondition()
self.mutex = QMutex()
self.isstopped = False
def trigger(self):
"""lock first to make sure the QThread is actually waiting for a signal"""
self.mutex.lock()
self.waitcond.wakeOne()
self.mutex.unlock()
def stopThread(self):
self.mutex.lock()
self.isstopped = True
self.waitcond.wakeOne()
self.mutex.unlock()
def run(self):
self.mutex.lock()
while not self.isstopped:
# just wait, and trigger every time we receive a signal
self.waitcond.wait(self.mutex)
if not self.isstopped:
self.emit(SIGNAL("triggerSignal()"))
self.mutex.unlock()
class FortuneThread(QThread):
newFortune = Signal(str)
error = Signal(int, str)
def __init__(self, parent=None):
super(FortuneThread, self).__init__(parent)
self.quit = False
self.hostName = ''
self.cond = QWaitCondition()
self.mutex = QMutex()
self.port = 0
def __del__(self):
self.mutex.lock()
self.quit = True
self.cond.wakeOne()
self.mutex.unlock()
self.wait()
def requestNewFortune(self, hostname, port):
locker = QMutexLocker(self.mutex)
self.hostName = hostname
self.port = port
if not self.isRunning():
self.start()
else:
self.cond.wakeOne()
def run(self):
self.mutex.lock()
serverName = self.hostName
serverPort = self.port
self.mutex.unlock()
while not self.quit:
Timeout = 5 * 1000
socket = QTcpSocket()
socket.connectToHost(serverName, serverPort)
if not socket.waitForConnected(Timeout):
self.error.emit(socket.error(), socket.errorString())
return
while socket.bytesAvailable() < 2:
if not socket.waitForReadyRead(Timeout):
self.error.emit(socket.error(), socket.errorString())
return
instr = QDataStream(socket)
instr.setVersion(QDataStream.Qt_4_0)
blockSize = instr.readUInt16()
while socket.bytesAvailable() < blockSize:
if not socket.waitForReadyRead(Timeout):
self.error.emit(socket.error(), socket.errorString())
return
self.mutex.lock()
fortune = instr.readQString()
self.newFortune.emit(fortune)
self.cond.wait(self.mutex)
serverName = self.hostName
serverPort = self.port
self.mutex.unlock()
class RenderThread(QThread):
ColormapSize = 512
renderedImage = Signal(QImage, float)
def __init__(self, parent=None):
super(RenderThread, self).__init__(parent)
self.mutex = QMutex()
self.condition = QWaitCondition()
self.centerX = 0.0
self.centerY = 0.0
self.scaleFactor = 0.0
self.resultSize = QSize()
self.colormap = []
self.restart = False
self.abort = False
for i in range(RenderThread.ColormapSize):
self.colormap.append(self.rgbFromWaveLength(380.0 + (i * 400.0 / RenderThread.ColormapSize)))
def stop(self):
self.mutex.lock()
self.abort = True
self.condition.wakeOne()
self.mutex.unlock()
self.wait(2000)
def render(self, centerX, centerY, scaleFactor, resultSize):
locker = QMutexLocker(self.mutex)
self.centerX = centerX
self.centerY = centerY
self.scaleFactor = scaleFactor
self.resultSize = resultSize
if not self.isRunning():
self.start(QThread.LowPriority)
else:
self.restart = True
self.condition.wakeOne()
def run(self):
while True:
self.mutex.lock()
resultSize = self.resultSize
scaleFactor = self.scaleFactor
centerX = self.centerX
centerY = self.centerY
self.mutex.unlock()
halfWidth = resultSize.width() // 2
halfHeight = resultSize.height() // 2
image = QImage(resultSize, QImage.Format_RGB32)
NumPasses = 8
curpass = 0
while curpass < NumPasses:
MaxIterations = (1 << (2 * curpass + 6)) + 32
Limit = 4
allBlack = True
for y in range(-halfHeight, halfHeight):
if self.restart:
break
if self.abort:
return
ay = 1j * (centerY + (y * scaleFactor))
for x in range(-halfWidth, halfWidth):
c0 = centerX + (x * scaleFactor) + ay
c = c0
numIterations = 0
while numIterations < MaxIterations:
numIterations += 1
c = c*c + c0
if abs(c) >= Limit:
break
numIterations += 1
c = c*c + c0
if abs(c) >= Limit:
break
numIterations += 1
c = c*c + c0
if abs(c) >= Limit:
break
numIterations += 1
c = c*c + c0
if abs(c) >= Limit:
break
if numIterations < MaxIterations:
image.setPixel(x + halfWidth, y + halfHeight,
self.colormap[numIterations % RenderThread.ColormapSize])
allBlack = False
else:
image.setPixel(x + halfWidth, y + halfHeight, qRgb(0, 0, 0))
if allBlack and curpass == 0:
curpass = 4
else:
if not self.restart:
self.renderedImage.emit(image, scaleFactor)
curpass += 1
self.mutex.lock()
if not self.restart:
self.condition.wait(self.mutex)
self.restart = False
self.mutex.unlock()
def rgbFromWaveLength(self, wave):
r = 0.0
g = 0.0
b = 0.0
if wave >= 380.0 and wave <= 440.0:
r = -1.0 * (wave - 440.0) / (440.0 - 380.0)
b = 1.0
elif wave >= 440.0 and wave <= 490.0:
g = (wave - 440.0) / (490.0 - 440.0)
b = 1.0
elif wave >= 490.0 and wave <= 510.0:
g = 1.0
b = -1.0 * (wave - 510.0) / (510.0 - 490.0)
elif wave >= 510.0 and wave <= 580.0:
r = (wave - 510.0) / (580.0 - 510.0)
g = 1.0
elif wave >= 580.0 and wave <= 645.0:
r = 1.0
g = -1.0 * (wave - 645.0) / (645.0 - 580.0)
elif wave >= 645.0 and wave <= 780.0:
r = 1.0
s = 1.0
if wave > 700.0:
s = 0.3 + 0.7 * (780.0 - wave) / (780.0 - 700.0)
elif wave < 420.0:
s = 0.3 + 0.7 * (wave - 380.0) / (420.0 - 380.0)
r = pow(r * s, 0.8)
g = pow(g * s, 0.8)
b = pow(b * s, 0.8)
return qRgb(r*255, g*255, b*255)
class RenderThread(QThread):
ColormapSize = 512
renderedImage = Signal(QImage, float)
def __init__(self, parent=None):
super(RenderThread, self).__init__(parent)
self.mutex = QMutex()
self.condition = QWaitCondition()
self.centerX = 0.0
self.centerY = 0.0
self.scaleFactor = 0.0
self.resultSize = QSize()
self.colormap = []
self.restart = False
self.abort = False
for i in range(RenderThread.ColormapSize):
self.colormap.append(
self.rgbFromWaveLength(380.0 + (i * 400.0 /
RenderThread.ColormapSize)))
def stop(self):
self.mutex.lock()
self.abort = True
self.condition.wakeOne()
self.mutex.unlock()
self.wait(2000)
def render(self, centerX, centerY, scaleFactor, resultSize):
locker = QMutexLocker(self.mutex)
self.centerX = centerX
self.centerY = centerY
self.scaleFactor = scaleFactor
self.resultSize = resultSize
if not self.isRunning():
self.start(QThread.LowPriority)
else:
self.restart = True
self.condition.wakeOne()
def run(self):
while True:
self.mutex.lock()
resultSize = self.resultSize
scaleFactor = self.scaleFactor
centerX = self.centerX
centerY = self.centerY
self.mutex.unlock()
halfWidth = resultSize.width() // 2
halfHeight = resultSize.height() // 2
image = QImage(resultSize, QImage.Format_RGB32)
NumPasses = 8
curpass = 0
while curpass < NumPasses:
MaxIterations = (1 << (2 * curpass + 6)) + 32
Limit = 4
allBlack = True
for y in range(-halfHeight, halfHeight):
if self.restart:
break
if self.abort:
return
ay = 1j * (centerY + (y * scaleFactor))
for x in range(-halfWidth, halfWidth):
c0 = centerX + (x * scaleFactor) + ay
c = c0
numIterations = 0
while numIterations < MaxIterations:
numIterations += 1
c = c * c + c0
if abs(c) >= Limit:
break
numIterations += 1
c = c * c + c0
if abs(c) >= Limit:
break
numIterations += 1
c = c * c + c0
if abs(c) >= Limit:
break
numIterations += 1
c = c * c + c0
if abs(c) >= Limit:
break
if numIterations < MaxIterations:
image.setPixel(
x + halfWidth, y + halfHeight,
self.colormap[numIterations %
RenderThread.ColormapSize])
allBlack = False
else:
image.setPixel(x + halfWidth, y + halfHeight,
qRgb(0, 0, 0))
if allBlack and curpass == 0:
curpass = 4
else:
if not self.restart:
self.renderedImage.emit(image, scaleFactor)
curpass += 1
self.mutex.lock()
if not self.restart:
self.condition.wait(self.mutex)
self.restart = False
self.mutex.unlock()
def rgbFromWaveLength(self, wave):
r = 0.0
g = 0.0
b = 0.0
if wave >= 380.0 and wave <= 440.0:
r = -1.0 * (wave - 440.0) / (440.0 - 380.0)
b = 1.0
elif wave >= 440.0 and wave <= 490.0:
g = (wave - 440.0) / (490.0 - 440.0)
b = 1.0
elif wave >= 490.0 and wave <= 510.0:
g = 1.0
b = -1.0 * (wave - 510.0) / (510.0 - 490.0)
elif wave >= 510.0 and wave <= 580.0:
r = (wave - 510.0) / (580.0 - 510.0)
g = 1.0
elif wave >= 580.0 and wave <= 645.0:
r = 1.0
g = -1.0 * (wave - 645.0) / (645.0 - 580.0)
elif wave >= 645.0 and wave <= 780.0:
r = 1.0
s = 1.0
if wave > 700.0:
s = 0.3 + 0.7 * (780.0 - wave) / (780.0 - 700.0)
elif wave < 420.0:
s = 0.3 + 0.7 * (wave - 380.0) / (420.0 - 380.0)
r = pow(r * s, 0.8)
g = pow(g * s, 0.8)
b = pow(b * s, 0.8)
return qRgb(r * 255, g * 255, b * 255)
class FortuneThread(QThread):
newFortune = Signal(str)
error = Signal(int, str)
def __init__(self, parent=None):
super(FortuneThread, self).__init__(parent)
self.quit = False
self.hostName = ''
self.cond = QWaitCondition()
self.mutex = QMutex()
self.port = 0
def __del__(self):
self.mutex.lock()
self.quit = True
self.cond.wakeOne()
self.mutex.unlock()
self.wait()
def requestNewFortune(self, hostname, port):
locker = QMutexLocker(self.mutex)
self.hostName = hostname
self.port = port
if not self.isRunning():
self.start()
else:
self.cond.wakeOne()
def run(self):
self.mutex.lock()
serverName = self.hostName
serverPort = self.port
self.mutex.unlock()
while not self.quit:
Timeout = 5 * 1000
socket = QTcpSocket()
socket.connectToHost(serverName, serverPort)
if not socket.waitForConnected(Timeout):
self.error.emit(socket.error(), socket.errorString())
return
while socket.bytesAvailable() < 2:
if not socket.waitForReadyRead(Timeout):
self.error.emit(socket.error(), socket.errorString())
return
instr = QDataStream(socket)
instr.setVersion(QDataStream.Qt_4_0)
blockSize = instr.readUInt16()
while socket.bytesAvailable() < blockSize:
if not socket.waitForReadyRead(Timeout):
self.error.emit(socket.error(), socket.errorString())
return
self.mutex.lock()
fortune = instr.readQString()
self.newFortune.emit(fortune)
self.cond.wait(self.mutex)
serverName = self.hostName
serverPort = self.port
self.mutex.unlock()
