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be hidpi-aware for remote rendering

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KIU Shueng Chuan 2021-04-22 17:26:46 +08:00
parent ec4d613037
commit 51871cd01e
1 changed files with 7 additions and 3 deletions
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10
pyqtgraph/widgets/RemoteGraphicsView.py
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@ -211,7 +211,10 @@ class Renderer(GraphicsView):
## make sure shm is large enough and get its address
if self.width() == 0 or self.height() == 0:
return
size = self.width() * self.height() * 4
dpr = self.devicePixelRatioF()
iwidth = int(self.width() * dpr)
iheight = int(self.height() * dpr)
size = iwidth * iheight * 4
if size > self.shm.size():
if sys.platform.startswith('win'):
## windows says "WindowsError: [Error 87] the parameter is incorrect" if we try to resize the mmap
@ -240,13 +243,14 @@ class Renderer(GraphicsView):
# PySide2, PySide6
img_ptr = self.shm
self.img = QtGui.QImage(img_ptr, self.width(), self.height(), QtGui.QImage.Format_ARGB32)
self.img = QtGui.QImage(img_ptr, iwidth, iheight, QtGui.QImage.Format_ARGB32)
self.img.setDevicePixelRatio(dpr)
self.img.fill(0xffffffff)
p = QtGui.QPainter(self.img)
self.render(p, self.viewRect(), self.rect())
p.end()
self.sceneRendered.emit((self.width(), self.height(), self.shm.size(), self.shmFileName()))
self.sceneRendered.emit((iwidth, iheight, self.shm.size(), self.shmFileName()))
def deserialize_mouse_event(self, mouse_event):
typ, pos, gpos, btn, btns, mods = mouse_event