def __imageLoaded(self, filePath, targetSize, image, extraArgs):
"""
Repaint the rect containing the image
:parameters:
filePath : str
path to image file
targetSize : QtCore.QSize
intended size of the image
image : QtGui.QImage
the image that has been loaded
extraArgs : list
Index of model item containing the image
[ QtCore.QPersistandModelIndex ]
"""
index = QtCore.QModelIndex(extraArgs[0])
model = index.model()
if model is None:
return
# On OSX 10.9 PyQt 4.10 replaces null QImages with QPyNullVariants when retreiving them from a model
if not isinstance(image, QtGui.QImage):
image = QtGui.QImage()
model.setItemData(index, {
common.ROLE_IMAGE: image,
self.ROLE_SCALED_IMAGE: image
})
if image.isNull():
return
if index.isValid():
rect = self._view.visualRect(index)
if rect.isValid():
self._view.viewport().repaint(rect)
def _paintImage(self, painter, option, index):
"""
Draw an image in the cell
:parameters:
painter : QtGui.QPainter
painter to draw the image with
option : QtGui.QStyleOption
style information
index : QtCore.QModelIndex
index if the cell to draw
"""
# using old method for now
imageFile = index.data()
if not imageFile:
return
model = index.model()
# only load an image where one hasn't already been loaded
origImage = image = index.data(role=common.ROLE_IMAGE)
origScaledImage = scaledImage = index.data(role=self.ROLE_SCALED_IMAGE)
origFailedImage = failedImage = index.data(role=self.ROLE_FAILED_IMAGE)
# On OSX 10.9 PyQt 4.10 replaces null QImages with QPyNullVariants when retreiving them from a model
if image is not None and not isinstance(image, QtGui.QImage):
image = QtGui.QImage()
if scaledImage is not None and not isinstance(scaledImage,
QtGui.QImage):
scaledImage = QtGui.QImage()
if not failedImage:
if image is None:
# if it's a null image or a loading image, load it.
scaledImage = image = self.__imageLoader.loadImage(
imageFile, None, QtCore.QPersistentModelIndex(index))
# if it's not a null image or a loading image...
if not image.isNull():
if scaledImage is None:
scaledImage = image
scaledImageSize = scaledImage.size()
targetSize = option.rect.size().boundedTo(image.size())
targetSize.setHeight(
int(targetSize.width() / self.__imageCellAspectRatio))
if scaledImageSize.width() != targetSize.width(
) and scaledImageSize.height() != targetSize.height():
scaledImage = image.scaled(targetSize,
QtCore.Qt.KeepAspectRatio,
QtCore.Qt.SmoothTransformation)
else:
failedImage = True
# if <image> is null, set scaled image to null as well
# this would make null images show up as failed, we could maybe have a more neutral icon?
# scaledImage = self.__imageLoader._imageMissingLrg
# update model data
dataUpdateMap = {}
if origImage is not image:
dataUpdateMap[common.ROLE_IMAGE] = image
if origScaledImage is not scaledImage:
dataUpdateMap[self.ROLE_SCALED_IMAGE] = scaledImage
if origFailedImage != failedImage:
dataUpdateMap[self.ROLE_FAILED_IMAGE] = failedImage
if dataUpdateMap:
model.setItemData(index, dataUpdateMap)
# center the image in the cell
targetRect = scaledImage.rect()
targetRect.moveCenter(option.rect.center())
# draw the image
painter.save()
painter.drawImage(targetRect, scaledImage)
# Image cycling icon ( test )
# if common.imageFormatIsAnimatable( imageFile ) and os.path.isfile( imageFile ):
# animIcon = QtGui.QImage( common.ICON_CLAPBOARD_SML )
# animIconSize = animIcon.size()
# brPoint = targetRect.bottomRight() - QtCore.QPoint( animIconSize.width(), animIconSize.height() )
# painter.drawImage( brPoint, animIcon ) # TODO proper icon
painter.restore()
