示例#1
0
class OWLegendTitle(QGraphicsObject):
    """
        A legend item that shows ``text`` with a bold font and no symbol.
    """
    def __init__(self, text, parent):
        QGraphicsObject.__init__(self, parent)
        self.text_item = QGraphicsTextItem(text + ':', self)
        f = self.text_item.font()
        f.setBold(True)
        self.text_item.setFont(f)
        self.rect_item = QGraphicsRectItem(self.text_item.boundingRect(), self)
        self.rect_item.setPen(QPen(Qt.NoPen))
        self.rect_item.stackBefore(self.text_item)

    def boundingRect(self):
        return self.text_item.boundingRect()

    def paint(self, painter, option, widget):
        pass
示例#2
0
class OWLegendItem(QGraphicsObject):
    """
        Represents a legend item with a title and a point symbol.
        
        :param name: The text to display
        :type name: str
        
        :param point: The point symbol
        :type point: :obj:`.OWPoint`
        
        :param parent: The parent item, passed to QGraphicsItem
        :type parent: :obj:`QGraphicsItem`
        
        .. seealso:: :meth:`.OWLegend.add_item`, :meth:`.OWLegend.add_curve`. 
    """
    def __init__(self, name, point, parent):
        QGraphicsObject.__init__(self, parent)
        self.text_item = QGraphicsTextItem(name, self)
        if point:
            s = point.size()
            height = max(2 * s, self.text_item.boundingRect().height())
        else:
            height = self.text_item.boundingRect().height()
        p = 0.5 * height
        self.text_item.setPos(height, 0)
        self.point_item = point
        if point:
            self.point_item.setParentItem(self)
            self.point_item.setPos(p, p)
        self._rect = QRectF(0, 0,
                            height + self.text_item.boundingRect().width(),
                            height)
        self.rect_item = QGraphicsRectItem(self._rect, self)
        self.rect_item.setPen(QPen(Qt.NoPen))
        self.rect_item.stackBefore(self.text_item)
        if self.point_item:
            self.rect_item.stackBefore(self.point_item)

    def boundingRect(self):
        return self._rect

    def paint(self, painter, option, widget):
        pass
示例#3
0
class OWLegendTitle(QGraphicsObject):
    """
        A legend item that shows ``text`` with a bold font and no symbol. 
    """
    def __init__(self, text, parent):
        QGraphicsObject.__init__(self, parent)
        self.text_item = QGraphicsTextItem(text + ':', self)
        f = self.text_item.font()
        f.setBold(True)
        self.text_item.setFont(f)
        self.rect_item = QGraphicsRectItem(self.text_item.boundingRect(), self)
        self.rect_item.setPen(QPen(Qt.NoPen))
        self.rect_item.stackBefore(self.text_item)

    def boundingRect(self):
        return self.text_item.boundingRect()

    def paint(self, painter, option, widget):
        pass
示例#4
0
class OWLegendItem(QGraphicsObject):
    """
        Represents a legend item with a title and a point symbol.

        :param name: The text to display
        :type name: str

        :param point: The point symbol
        :type point: :obj:`.OWPoint`

        :param parent: The parent item, passed to QGraphicsItem
        :type parent: :obj:`QGraphicsItem`

        .. seealso:: :meth:`.OWLegend.add_item`, :meth:`.OWLegend.add_curve`.
    """
    def __init__(self, name, point, parent):
        QGraphicsObject.__init__(self, parent)
        self.text_item = QGraphicsTextItem(name, self)
        if point:
            s = point.size()
            height = max(2*s, self.text_item.boundingRect().height())
        else:
            height = self.text_item.boundingRect().height()
        p = 0.5 * height
        self.text_item.setPos(height, 0)
        self.point_item = point
        if point:
            self.point_item.setParentItem(self)
            self.point_item.setPos(p, p)
        self._rect = QRectF(0, 0, height + self.text_item.boundingRect().width(), height )
        self.rect_item = QGraphicsRectItem(self._rect, self)
        self.rect_item.setPen(QPen(Qt.NoPen))
        self.rect_item.stackBefore(self.text_item)
        if self.point_item:
            self.rect_item.stackBefore(self.point_item)

    def boundingRect(self):
        return self._rect

    def paint(self, painter, option, widget):
        pass
示例#5
0
class GradientLegendItem(QGraphicsObject, GraphicsWidgetAnchor):
    gradient_width = 20

    def __init__(self, title, palette, values, parent):
        QGraphicsObject.__init__(self, parent)
        GraphicsWidgetAnchor.__init__(self)
        self.parent = self.legend = parent
        self.palette = palette
        self.values = values

        self.title = QGraphicsTextItem('%s:' % title, self)
        f = self.title.font()
        f.setBold(True)
        self.title.setFont(f)
        self.title_item = QGraphicsRectItem(self.title.boundingRect(), self)
        self.title_item.setPen(QPen(Qt.NoPen))
        self.title_item.stackBefore(self.title)

        self.label_items = [QGraphicsTextItem(text, self) for text in values]
        for i in self.label_items:
            i.setTextWidth(50)

        self.rect = QRectF()

        self.gradient_item = QGraphicsRectItem(self)
        self.gradient = QLinearGradient()
        self.gradient.setStops([(v * 0.1, self.palette[v * 0.1])
                                for v in range(11)])
        self.orientation = Qt.Horizontal
        self.set_orientation(Qt.Vertical)

        self.setFlag(QGraphicsItem.ItemIgnoresTransformations, True)
        self.setFlag(QGraphicsItem.ItemIsMovable, True)

    def set_orientation(self, orientation):
        return
        if self.orientation == orientation:
            return

        self.orientation = orientation

        if self.orientation == Qt.Vertical:
            height = max(item.boundingRect().height()
                         for item in self.label_items)
            total_height = height * max(5, len(self.label_items))
            interval = (total_height -
                        self.label_items[-1].boundingRect().height()
                        ) / (len(self.label_items) - 1)
            self.gradient_item.setRect(10, 0, self.gradient_width, total_height)
            self.gradient.setStart(10, 0)
            self.gradient.setFinalStop(10, total_height)
            self.gradient_item.setBrush(QBrush(self.gradient))
            self.gradient_item.setPen(QPen(Qt.NoPen))
            y = -20   # hja, no; dela --> pri boundingRect() zato pristejem +20
            x = 0
            move_item_xy(self.title, x, y, False)
            y = 10
            x = 30
            for item in self.label_items:
                move_item_xy(item, x, y, False)
                                       # self.parent.graph.animate_plot)
                y += interval
            self.rect = QRectF(10, 0,
                               self.gradient_width +
                               max(item.boundingRect().width()
                                   for item in self.label_items),
                               self.label_items[0].boundingRect().height() *
                               max(5, len(self.label_items)))
        else:
            # za horizontalno orientacijo nisem dodajal title-a
            width = 50
            height = max(item.boundingRect().height()
                         for item in self.label_items)
            total_width = width * max(5, len(self.label_items))
            interval = (total_width -
                        self.label_items[-1].boundingRect().width()
                        ) / (len(self.label_items) - 1)

            self.gradient_item.setRect(0, 0, total_width, self.gradient_width)
            self.gradient.setStart(0, 0)
            self.gradient.setFinalStop(total_width, 0)
            self.gradient_item.setBrush(QBrush(self.gradient))
            self.gradient_item.setPen(QPen(Qt.NoPen))
            x = 0
            y = 30
            for item in self.label_items:
                move_item_xy(item, x, y, False)
                                       # self.parent.graph.animate_plot)
                x += interval
            self.rect = QRectF(0, 0, total_width, self.gradient_width + height)

    # noinspection PyPep8Naming
    def boundingRect(self):
        width = max(self.rect.width(), self.title_item.boundingRect().width())
        height = self.rect.height() + self.title_item.boundingRect().height()
        return QRectF(self.rect.left(), self.rect.top(), width, height)

    def paint(self, painter, option, widget):
        pass