Python QGraphicsTextItem.setTextWidth方法代码示例

# 需要导入模块: from PyQt5.QtWidgets import QGraphicsTextItem [as 别名]
# 或者: from PyQt5.QtWidgets.QGraphicsTextItem import setTextWidth [as 别名]
    def createImage(self, transform):
        if self.type == DemoTextItem.DYNAMIC_TEXT:
            return None

        sx = min(transform.m11(), transform.m22())
        sy = max(transform.m22(), sx)

        textItem = QGraphicsTextItem()
        textItem.setHtml(self.text)
        textItem.setTextWidth(self.textWidth)
        textItem.setFont(self.font)
        textItem.setDefaultTextColor(self.textColor)
        textItem.document().setDocumentMargin(2)

        w = textItem.boundingRect().width()
        h = textItem.boundingRect().height()
        image = QImage(int(w * sx), int(h * sy),
                QImage.Format_ARGB32_Premultiplied)
        image.fill(QColor(0, 0, 0, 0).rgba())
        painter = QPainter(image)
        painter.scale(sx, sy)
        style = QStyleOptionGraphicsItem()
        textItem.paint(painter, style, None)

        return image

# 需要导入模块: from PyQt5.QtWidgets import QGraphicsTextItem [as 别名]
# 或者: from PyQt5.QtWidgets.QGraphicsTextItem import setTextWidth [as 别名]
    def showImage(self):
        (newImg, newImgInfo) = self.loadImage()
        # return PicItem(Pixmap(QPixmap(newImg)), -1, -1, xFactor, yFactor, newImgInfo)
        self.scene.clear()
        imgSz = newImgInfo.imgSize
        self.setSceneRect(QRectF(0,0,imgSz.width(), imgSz.height()))
        pixMap = QPixmap.fromImage(newImg)
        # # pixMap.setWidth(self.width())
        pixMapItem = self.scene.addPixmap(pixMap)
        # pixMapItem.setPos(50,50)
        # self.fitInView(QRectF(0, 0, self.width(), self.height()), Qt.KeepAspectRatio)
        # Add caption
        caption = QGraphicsTextItem()
        caption.setDefaultTextColor(QColor(255,255,255))
        caption.setPos(0, self.height()*0.94)
        caption.setFont(QFont("Segoe UI", 30))
        caption.setTextWidth(self.width())
        # caption.setPos(100, 100)
        # caption.setTextWidth(1500)
        # if newImgInfo.createDate is not None:
        #     caption.setPlainText(newImgInfo.createDate.format());
        # else:
        #     caption.setPlainText("Image is called bananas");
        # print("Tags", newImgInfo.tags)
        # tagStr = ""
        # for tag in newImgInfo.tags:
        #     if tag != "Duplicate":
        #         tagStr += (", " if len(tagStr) != 0 else "") + tag
        # if tagStr == "":
        #     tagStr = "NO TAGS"
        # captionStr = '<h1 style="text-align:center;width:100%">' + tagStr + '</h1>'
        # if newImgInfo.createDate is not None:
        #     print(newImgInfo.createDate.format())
        #     captionStr += '<BR><h2>' + newImgInfo.createDate.format() + '</h2>'

        captionStr = ""
        try:
            if newImgInfo.rating is not None:
                for i in range(newImgInfo.rating):
                    captionStr += "&#x2605;"
                for i in range(5-newImgInfo.rating):
                    captionStr += "&#x2606;"
            if newImgInfo.mainDate is not None:
                if len(captionStr) != 0:
                    captionStr += "  "
                captionStr += newImgInfo.mainDate.strftime("%d %b %Y")
        except Exception as excp:
            print("StaticPhotos: Cannot set caption")
        captionStr = '<div style="background-color:#000000;text-align: right;padding-right:10dp;">' + captionStr + "</div>"
        print(captionStr)
        caption.setHtml(captionStr)
        self.scene.addItem(caption)
        self.scene.update()

# 需要导入模块: from PyQt5.QtWidgets import QGraphicsTextItem [as 别名]
# 或者: from PyQt5.QtWidgets.QGraphicsTextItem import setTextWidth [as 别名]

#.........这里部分代码省略.........
    @property
    def end_point(self):
        ''' Compute connection end point - redefine in subclasses '''
        return self.mapFromScene(*self.edge['end']) \
               if self.edge.get('end') else None

    def bezier_set_visible(self, visible=True):
        ''' Display or hide the edge control points '''
        self.bezier_visible = visible
        for group in self.bezier[1:]:
            for ctrl_point in group:
                if visible:
                    ctrl_point.show()
                else:
                    ctrl_point.hide()
        if visible:
            self.end_connection.show()
            self.source_connection.show()
        else:
            self.end_connection.hide()
            self.source_connection.hide()
        self.update()

    def mousePressEvent(self, event):
        ''' On a mouse click, display the control points '''
        self.bezier_set_visible(True)

  # pylint: disable=R0914
    def reshape(self):
        ''' Update the shape of the edge (redefined function) '''
        path = QPainterPath()
        # If there is a starting point, draw a line to the first curve point
        if self.start_point:
            path.moveTo(self.source_connection.center)
            path.lineTo(self.bezier[0])
        else:
            path.moveTo(self.source_connection.center)
        # Loop over the curve points:
        for group in self.bezier[1:]:
            path.cubicTo(*[point.center for point in group])

        # If there is an ending point, draw a line to it
        if self.end_point:
            path.lineTo(self.end_connection.center)

        end_point = path.currentPosition()
        arrowhead = self.angle_arrow(path)
        path.lineTo(arrowhead[0])
        path.moveTo(end_point)
        path.lineTo(arrowhead[1])
        path.moveTo(end_point)
        try:
            # Add the transition label, if any (none for the START edge)
            font = QFont('arial', pointSize=8)
            metrics = QFontMetrics(font)
            label = self.edge.get('label', '')
            lines = label.split('\n')
            width = metrics.width(max(lines)) # longest line
            height = metrics.height() * len(lines)
            # lp is the position of the center of the text
            pos = self.mapFromScene(*self.edge['lp'])
            if not self.text_label:
                self.text_label = QGraphicsTextItem(
                                 self.edge.get('label', ''), parent=self)
            self.text_label.setX(pos.x() - width / 2)
            self.text_label.setY(pos.y() - height / 2)
            self.text_label.setFont(font)
            # Make horizontal center alignment, as dot does
            self.text_label.setTextWidth(self.text_label.boundingRect().width())
            fmt = QTextBlockFormat()
            fmt.setAlignment(Qt.AlignHCenter)
            cursor = self.text_label.textCursor()
            cursor.select(QTextCursor.Document)
            cursor.mergeBlockFormat(fmt)
            cursor.clearSelection()
            self.text_label.setTextCursor(cursor)
            self.text_label.show()
        except KeyError:
            # no label
            pass
        self.setPath(path)

    def __str__(self):
        ''' user-friendly information about the edge coordinates '''
        return('Edge between ' + self.edge['source'].name + ' and ' +
                self.edge['target'].name + str(self.edge['spline'][0]))

    def paint(self, painter, option, widget):
        ''' Apply anti-aliasing to Edge Connections '''
        painter.setRenderHint(QPainter.Antialiasing, True)
        super(Edge, self).paint(painter, option, widget)
        # Draw lines between connection points, if visible
        if self.bezier_visible:
            painter.setPen(
                    QPen(Qt.lightGray, 0, Qt.SolidLine))
            painter.setBrush(Qt.NoBrush)
            points_flat = [point.center
                           for sub1 in self.bezier[1:] for point in sub1]
            painter.drawPolyline([self.source_connection.center]
                                  + points_flat + [self.end_connection.center])