This is now the whole event filter.
class PixelFilter(QtCore.QObject):
""" This is the Pixel Event Filter, which draws a label when Pixel
Information is activated.
MMB enables the UI and prints the according pixel information
inside of the RenderView.
"""
def eventFilter(self, source, event):
""" Creates the Pixel information event
@param source Object where event is installed on
@type: QtObject
@param event Event type
@type: QEvent
"""
if event.type() == QtCore.QEvent.MouseButtonPress:
if event.buttons() == QtCore.Qt.MidButton:
''' Creates design of pixel label'''
pixelLabel.setStyleSheet("QLabel {background: rgb(150,
150, 150);"
" border-style: inset;"
" border-width: 1px;"
"color: rgb(0, 0, 0);}")
pixelLabel.setAlignment(QtCore.Qt.AlignCenter)
self.img =
QtGui.QPixmap.grabWindow(QtGui.QApplication.desktop().winId(), 0, 0, -1,
-1).toImage()
return False
elif event.type() == QtCore.QEvent.MouseButtonRelease:
pixelLabel.hide()
source.removeEventFilter(self)
vrGlobalVariable.pixelInformation.setChecked(False)
return False
if event.type() == QtCore.QEvent.MouseMove:
if event.buttons() == QtCore.Qt.MidButton:
''' Shows Pixel Information label and updates when
mouse is moving'''
pixelLabel.show()
px = QtGui.QCursor.pos()
pixelLabel.setGeometry(px.x(), px.y() - 20, 120, 15)
c = self.img.pixel(px.x(), px.y())
color = QtGui.QColor(c).getRgbF()
pixelLabel.setText('R:%.2f G:%.2f B:%.2f \n' %
(color[0], color[1], color[2]))
return False
return QtCore.QObject.eventFilter(self, source, event)
On Friday, December 5, 2014 8:57:04 AM UTC+1, Marcus Ottosson wrote:
>
> Now I want to extend the feature, and use it with maya’s updated render
> view( float values)..but grabbing just grabs 8 bit..
>
> This is still me theorising, but remember back in Windows 95-98 when you
> could set your desktop to both resolution and color depth? Well, if you’d
> set the depth to 1-bit, the entire desktop would be black & white. Even the
> Maya Render View, and any image within it. I suspect that it is from this
> very same framebuffer that Qt grabs images from. Like the whole desktop is
> one big rendered image, and that image is limited to whichever bit-depth
> the window manager is set to render in. In the case of desktops today, this
> depth is typically 8-bit per channel which would explain why you’re only
> getting that depth when grabbing your images.
>
> What I am trying to do is getting float pixel values when hovering with
> the cursor above the image.
>
> As a solution, I think you could safely save out the image via the render
> view as Justin suggests, load that image and get the position and color of
> that instead of a grabbed image. You would subtract from the local
> coordinate of the Render View widget and apply it to the actual coordinates
> of the final image, taking Render View zoom into account. And you might
> probably want to delay the tooltip, as saving the image might take a second
> depending on its size, but tooltips typically take a second or two to show
> anyway so it should still work out.
>
> If you could show me what you’ve got so far I might be able to take a
> closer look.
>
>
> On 4 December 2014 at 23:09, Arvid Schneider <[email protected]
> <javascript:>> wrote:
>
>> Float is only supported in Maya 15 and above. And when saving the image
>> from the render view as exr its definitely float.
>> What I am trying to do is getting float pixel values when hovering with
>> the cursor above the image.
>>
>> What I have done so far is grabbing the whole screen image and saving it
>> as a qimage. Then getting the global mouse x and y to query the pixel rgb
>> value under the cursor. Its works pretty smooth..
>> Now I want to extend the feature, and use it with maya's updated render
>> view( float values)..but grabbing just grabs 8 bit..
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Python Programming for Autodesk Maya" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to [email protected] <javascript:>.
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>> https://groups.google.com/d/msgid/python_inside_maya/af43fe28-6456-4611-b64d-ec2c09fa9941%40googlegroups.com
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
>
> --
> *Marcus Ottosson*
> [email protected] <javascript:>
>
--
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