ASCEE/pyqtgraph
5
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

convert uses of QTimer.singleShot to QTimer instances

Browse Source 
On macOS and Linux with PyQt bindings, QTimer.singleShot continues
to fire on python interpreter shutdown.
This commit is contained in:
KIU Shueng Chuan 2021-03-01 13:45:00 +08:00
parent 1ad7d49908
commit 85e894dd73
2 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
examples/ImageItem.py
View File

@ -36,6 +36,10 @@ i = 0
updateTime = ptime.time() updateTime = ptime.time()
fps = 0 fps = 0
timer = QtCore.QTimer()
timer.setSingleShot(True)
# not using QTimer.singleShot() because of persistence on PyQt. see PR #1605
def updateData(): def updateData():
global img, data, i, updateTime, fps global img, data, i, updateTime, fps
@ -43,7 +47,7 @@ def updateData():
img.setImage(data[i]) img.setImage(data[i])
i = (i+1) % data.shape[0] i = (i+1) % data.shape[0]
QtCore.QTimer.singleShot(1, updateData) timer.start(1)
now = ptime.time() now = ptime.time()
fps2 = 1.0 / (now-updateTime) fps2 = 1.0 / (now-updateTime)
updateTime = now updateTime = now
@ -51,7 +55,7 @@ def updateData():
#print "%0.1f fps" % fps #print "%0.1f fps" % fps
timer.timeout.connect(updateData)
updateData() updateData()
## Start Qt event loop unless running in interactive mode. ## Start Qt event loop unless running in interactive mode.

7
examples/PColorMeshItem.py
View File

@ -61,6 +61,10 @@ wave_speed = 0.3
wave_length = 10 wave_length = 10
color_speed = 0.3 color_speed = 0.3
timer = QtCore.QTimer()
timer.setSingleShot(True)
# not using QTimer.singleShot() because of persistence on PyQt. see PR #1605
i=0 i=0
def updateData(): def updateData():
global i global i
@ -74,8 +78,9 @@ def updateData():
new_z) new_z)
i += wave_speed i += wave_speed
QtCore.QTimer.singleShot(1000//fps, updateData) timer.start(1000//fps)
timer.timeout.connect(updateData)
updateData() updateData()
## Start Qt event loop unless running in interactive mode. ## Start Qt event loop unless running in interactive mode.