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use Format_RGB32 when using QImage as paint device

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this allows sub-pixel font antialiasing to take place.
This commit is contained in:
KIU Shueng Chuan 2021-04-23 18:29:27 +08:00
parent a9161e0794
commit fbc86cd2c5
1 changed files with 3 additions and 6 deletions
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9
pyqtgraph/widgets/RemoteGraphicsView.py
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@ -80,17 +80,14 @@ class RemoteGraphicsView(QtGui.QWidget):
self.shm = mmap.mmap(-1, size, self.shmtag) ## can't use tmpfile on windows because the file can only be opened once. self.shm = mmap.mmap(-1, size, self.shmtag) ## can't use tmpfile on windows because the file can only be opened once.
else: else:
self.shm = mmap.mmap(self.shmFile.fileno(), size, mmap.MAP_SHARED, mmap.PROT_READ) self.shm = mmap.mmap(self.shmFile.fileno(), size, mmap.MAP_SHARED, mmap.PROT_READ)
self.shm.seek(0) self._img = QtGui.QImage(self.shm, w, h, QtGui.QImage.Format.Format_RGB32).copy()
data = self.shm.read(w*h*4)
self._img = QtGui.QImage(data, w, h, QtGui.QImage.Format_ARGB32)
self._img.data = data # data must be kept alive or PySide 1.2.1 (and probably earlier) will crash.
self.update() self.update()
def paintEvent(self, ev): def paintEvent(self, ev):
if self._img is None: if self._img is None:
return return
p = QtGui.QPainter(self) p = QtGui.QPainter(self)
p.drawImage(self.rect(), self._img, QtCore.QRect(0, 0, self._img.width(), self._img.height())) p.drawImage(self.rect(), self._img, self._img.rect())
p.end() p.end()
def serialize_mouse_enum(self, *args): def serialize_mouse_enum(self, *args):
@ -243,7 +240,7 @@ class Renderer(GraphicsView):
# PySide2, PySide6 # PySide2, PySide6
img_ptr = self.shm img_ptr = self.shm
self.img = QtGui.QImage(img_ptr, iwidth, iheight, QtGui.QImage.Format_ARGB32) self.img = QtGui.QImage(img_ptr, iwidth, iheight, QtGui.QImage.Format.Format_RGB32)
self.img.setDevicePixelRatio(dpr) self.img.setDevicePixelRatio(dpr)
self.img.fill(0xffffffff) self.img.fill(0xffffffff)