items.py 文件源码

def createGraphicItemsFromData(self):
        w =  self.staticItem["completeDuration"] / constantsAndConfigs.ticksToPixelRatio - constantsAndConfigs.magicPixel*2

        if int(self.staticItem["numberOfMeasures"]) == self.staticItem["numberOfMeasures"]: #just an int?
            numberOfMeasuresString = str(int(self.staticItem["numberOfMeasures"]))
        else:
            numberOfMeasuresString = str(self.staticItem["numberOfMeasures"]) #include the decimal dot

        rect = QtWidgets.QGraphicsRectItem(constantsAndConfigs.magicPixel,0, w, constantsAndConfigs.stafflineGap) #x,y, w, h
        rect.setBrush(QtCore.Qt.black)
        rect.setParentItem(self)
        self.rect = rect #for stretching

        leftBlock = QtWidgets.QGraphicsRectItem(2, -1* constantsAndConfigs.stafflineGap, constantsAndConfigs.magicPixel, 3*constantsAndConfigs.stafflineGap)
        leftBlock.setBrush(QtCore.Qt.black)
        leftBlock.setParentItem(self)

        rightBlock = QtWidgets.QGraphicsRectItem(0, -1* constantsAndConfigs.stafflineGap, constantsAndConfigs.magicPixel, 3*constantsAndConfigs.stafflineGap) #x, y, w, h
        rightBlock.setBrush(QtCore.Qt.black)
        #rightBlock.setPos(w,0)
        rightBlock.setPos(rect.rect().right(),0)
        rightBlock.setParentItem(self)
        self.rightBlock = rightBlock #for stretching

        for i, char in enumerate(numberOfMeasuresString):
            if char == ".":
                continue #TODO: Maybe warn about that?  MMR below 1 are not valid but they are needed for editing purposes. Sometimes you need to go through such a value.
            else:
                n = GuiTimeSignature.digits[int(char)]
                char = QtSvg.QGraphicsSvgItem()
                char.setSharedRenderer(GuiTimeSignature.renderer)
                char.setElementId(n)
            #char.setPos(i*4*constantsAndConfigs.magicPixel + 4* constantsAndConfigs.magicPixel, -3*constantsAndConfigs.stafflineGap)
            char.setPos(leftBlock.rect().width(), -3*constantsAndConfigs.stafflineGap)
            char.setScale(1.5)
            char.setParentItem(self)

        self.setPos(0, -3 * constantsAndConfigs.stafflineGap)