我有bindData(){
this.invArr = this.invLookUpSvc.getPortalInvByProdNbrSum().query({
rtbProductNbr: this.productNumber
}, function (data) {
if (angular.isDefined(data)) {
this.invArr = data; //this.invArr not found
console.log(this.maxSize); //this.MaxSize not found.
}
});
}
可以显示图像，放大和缩小。这是代码：
QGraphicsView我想要做的是限制放大或缩小。图像大小缩放class MyQGraphicsView(QtGui.QGraphicsView):
def __init__ (self, parent=None):
super(MyQGraphicsView, self).__init__ (parent)
def wheelEvent(self, event):
# Zoom Factor
zoomInFactor = 1.25
zoomOutFactor = 1 / zoomInFactor
# Set Anchors
self.setTransformationAnchor(QtGui.QGraphicsView.NoAnchor)
self.setResizeAnchor(QtGui.QGraphicsView.NoAnchor)
# Save the scene pos
oldPos = self.mapToScene(event.pos())
# Zoom
if event.delta() > 0:
zoomFactor = zoomInFactor
else:
zoomFactor = zoomOutFactor
self.scale(zoomFactor, zoomFactor)
# Get the new position
newPos = self.mapToScene(event.pos())
# Move scene to old position
delta = newPos - oldPos
self.translate(delta.x(), delta.y())
大小，如下所示：
qgraphicsview如您所见，图片尺寸等于 scene = QtGui.QGraphicsScene()
pixmap = QtGui.QPixmap('pic.jpeg')
w = self.graphicsView.width()
h = self.graphicsView.height()
scene.addPixmap(pixmap.scaled(QtCore.QSize(w,h)))
self.graphicsView.setScene(scene)
尺寸。在这个位置，我不希望用户缩小图像。仅当用户放大图像时，才可以缩小，但直到图像大小等于qgraphicsview大小。我没控制住这个。你能建议我一个方法吗？