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don't redefine width() and height()

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Qt widgets define width() and height() to be in device independent
pixels. Don't change that meaning.
This commit is contained in:
KIU Shueng Chuan 2021-07-17 10:14:53 +08:00
parent e158034c07
commit ee9b1565bd
1 changed files with 15 additions and 14 deletions
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29
pyqtgraph/opengl/GLViewWidget.py
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@ -71,14 +71,13 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
window.screenChanged.connect(self._updateScreen)
self._updateScreen(window.screen())
def width(self):
def deviceWidth(self):
dpr = self.devicePixelRatio()
return int(super().width() * dpr)
def height(self):
dpr = self.devicePixelRatio()
return int(super().height() * dpr)
return int(self.width() * dpr)
def deviceHeight(self):
dpr = self.devicePixelRatio()
return int(self.height() * dpr)
def reset(self):
"""
@ -143,8 +142,10 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
def getViewport(self):
vp = self.opts['viewport']
if vp is None:
return (0, 0, self.width(), self.height())
return (0, 0, self.deviceWidth(), self.deviceHeight())
else:
# note: the following code means that we have defined opts['viewport']
# to be in device independent pixels.
dpr = self.devicePixelRatio()
return tuple([int(x * dpr) for x in vp])
@ -165,7 +166,7 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
def projectionMatrix(self, region=None):
if region is None:
region = (0, 0, self.width(), self.height())
region = (0, 0, self.deviceWidth(), self.deviceHeight())
x0, y0, w, h = self.getViewport()
dist = self.opts['distance']
@ -211,7 +212,7 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
Return a list of the items displayed in the region (x, y, w, h)
relative to the widget.
"""
region = (region[0], self.height()-(region[1]+region[3]), region[2], region[3])
region = (region[0], self.deviceHeight()-(region[1]+region[3]), region[2], region[3])
#buf = np.zeros(100000, dtype=np.uint)
buf = glSelectBuffer(100000)
@ -378,7 +379,7 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
cVec = self.opts['center'] - cPos
dist = cVec.length() ## distance from camera to center
xDist = dist * 2. * tan(0.5 * radians(self.opts['fov'])) ## approx. width of view at distance of center point
xScale = xDist / self.width()
xScale = xDist / self.deviceWidth()
zVec = QtGui.QVector3D(0,0,1)
xVec = QtGui.QVector3D.crossProduct(zVec, cVec).normalized()
yVec = QtGui.QVector3D.crossProduct(xVec, zVec).normalized()
@ -403,7 +404,7 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
fov = radians(self.opts['fov'])
dist = (self.opts['center'] - self.cameraPosition()).length()
fov_factor = tan(fov / 2) * 2
scale_factor = dist * fov_factor / self.width()
scale_factor = dist * fov_factor / self.deviceWidth()
z = scale_factor * cos(elev) * dy
x = scale_factor * (sin(azim) * dx - sin(elev) * cos(azim) * dy)
y = scale_factor * (cos(azim) * dx + sin(elev) * sin(azim) * dy)
@ -425,7 +426,7 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
else:
dist = (pos-cam).length()
xDist = dist * 2. * tan(0.5 * radians(self.opts['fov']))
return xDist / self.width()
return xDist / self.deviceWidth()
def mousePressEvent(self, ev):
lpos = ev.position() if hasattr(ev, 'position') else ev.localPos()
@ -543,8 +544,8 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
"""
Read the current buffer pixels out as a QImage.
"""
w = self.width()
h = self.height()
w = self.deviceWidth()
h = self.deviceHeight()
self.repaint()
pixels = np.empty((h, w, 4), dtype=np.ubyte)
pixels[:] = 128