Python QGraphicsTextItem.document方法代码示例

# 需要导入模块: from PyQt4.QtGui import QGraphicsTextItem [as 别名]
# 或者: from PyQt4.QtGui.QGraphicsTextItem import document [as 别名]
class GraphicsTextWidget(QGraphicsWidget):
    def __init__(self, text, parent=None, **kwargs):
        super().__init__(parent, **kwargs)
        self.labelItem = QGraphicsTextItem(self)
        self.setHtml(text)

        self.labelItem.document().documentLayout().documentSizeChanged.connect(
            self.onLayoutChanged
        )

    def setGeometry(self, rect):
        self.prepareGeometryChange()
        super().setGeometry(rect)

    def onLayoutChanged(self, *args):
        self.updateGeometry()

    def sizeHint(self, which, constraint=QSizeF()):
        if which == Qt.MinimumSize:
            return self.labelItem.boundingRect().size()
        else:
            return self.labelItem.boundingRect().size()

    def setTextWidth(self, width):
        self.labelItem.setTextWidth(width)

    def setHtml(self, text):
        self.labelItem.setHtml(text)

# 需要导入模块: from PyQt4.QtGui import QGraphicsTextItem [as 别名]
# 或者: from PyQt4.QtGui.QGraphicsTextItem import document [as 别名]
 def set_functions_list(self, functionsList, prefix="", sufix=""):
     self.funtionsList = functionsList
     self.funtionsListItems = []
     self.maxHeight = 0
     tempHeight = 0
     for element in functionsList:
         tempElement = QGraphicsTextItem(self)
         tempElement.setPlainText(prefix + element + sufix)
         tempElement.setPos(0, tempHeight)
         tempHeight += tempElement.document().size().height()
         if self.maxWidth < tempElement.document().size().width():
             self.maxWidth = tempElement.document().size().width()
         self.funtionsListItems.append(tempElement)
     self.maxHeight = tempHeight

# 需要导入模块: from PyQt4.QtGui import QGraphicsTextItem [as 别名]
# 或者: from PyQt4.QtGui.QGraphicsTextItem import document [as 别名]
class VennIntersectionArea(QGraphicsPathItem):
    def __init__(self, parent=None, text=""):
        super(QGraphicsPathItem, self).__init__(parent)
        self.setAcceptHoverEvents(True)
        self.setPen(QPen(Qt.NoPen))

        self.text = QGraphicsTextItem(self)
        layout = self.text.document().documentLayout()
        layout.documentSizeChanged.connect(self._onLayoutChanged)

        self._text = ""
        self._anchor = QPointF()

    def setText(self, text):
        if self._text != text:
            self._text = text
            self.text.setPlainText(text)

    def text(self):
        return self._text

    def setTextAnchor(self, pos):
        if self._anchor != pos:
            self._anchor = pos
            self._updateTextAnchor()

    def hoverEnterEvent(self, event):
        self.setZValue(self.zValue() + 1)
        return QGraphicsPathItem.hoverEnterEvent(self, event)

    def hoverLeaveEvent(self, event):
        self.setZValue(self.zValue() - 1)
        return QGraphicsPathItem.hoverLeaveEvent(self, event)

    def mousePressEvent(self, event):
        if event.button() == Qt.LeftButton:
            if event.modifiers() & Qt.AltModifier:
                self.setSelected(False)
            elif event.modifiers() & Qt.ControlModifier:
                self.setSelected(not self.isSelected())
            elif event.modifiers() & Qt.ShiftModifier:
                self.setSelected(True)
            else:
                for area in self.parentWidget().vennareas():
                    area.setSelected(False)
                self.setSelected(True)

    def mouseReleaseEvent(self, event):
        pass

    def paint(self, painter, option, widget=None):
        painter.save()
        path = self.path()
        brush = QBrush(self.brush())
        pen = QPen(self.pen())

        if option.state & QStyle.State_Selected:
            pen.setColor(Qt.red)
            brush.setStyle(Qt.DiagCrossPattern)
            brush.setColor(QColor(40, 40, 40, 100))

        elif option.state & QStyle.State_MouseOver:
            pen.setColor(Qt.blue)

        if option.state & QStyle.State_MouseOver:
            brush.setColor(QColor(100, 100, 100, 100))
            if brush.style() == Qt.NoBrush:
                # Make sure the highlight is actually visible.
                brush.setStyle(Qt.SolidPattern)

        painter.setPen(pen)
        painter.setBrush(brush)
        painter.drawPath(path)
        painter.restore()

    def itemChange(self, change, value):
        if change == QGraphicsPathItem.ItemSelectedHasChanged:
            self.setZValue(self.zValue() + (1 if value else -1))
        return QGraphicsPathItem.itemChange(self, change, value)

    def _updateTextAnchor(self):
        rect = self.text.boundingRect()
        pos = anchor_rect(rect, self._anchor)
        self.text.setPos(pos)

    def _onLayoutChanged(self):
        self._updateTextAnchor()

# 需要导入模块: from PyQt4.QtGui import QGraphicsTextItem [as 别名]
# 或者: from PyQt4.QtGui.QGraphicsTextItem import document [as 别名]

#.........这里部分代码省略.........
        """
        Set the anchor rotation.
        """
        self.inputAnchorItem.setRotation(angle)
        self.outputAnchorItem.setRotation(angle)
        self.anchorGeometryChanged.emit()

    def anchorRotation(self):
        """
        Return the anchor rotation.
        """
        return self.inputAnchorItem.rotation()

    def boundingRect(self):
        # TODO: Important because of this any time the child
        # items change geometry the self.prepareGeometryChange()
        # needs to be called.
        return self.childrenBoundingRect()

    def shape(self):
        # Shape for mouse hit detection.
        # TODO: Should this return the union of all child items?
        return self.shapeItem.shape()

    def __updateTitleText(self):
        """
        Update the title text item.
        """
        title_safe = escape(self.title())
        if self.progress() > 0:
            text = '<div align="center">%s<br/>%i%%</div>' % \
                   (title_safe, int(self.progress()))
        else:
            text = '<div align="center">%s</div>' % \
                   (title_safe)

        # The NodeItems boundingRect could change.
        self.prepareGeometryChange()
        self.captionTextItem.setHtml(text)
        self.captionTextItem.document().adjustSize()
        width = self.captionTextItem.textWidth()
        self.captionTextItem.setPos(-width / 2.0, 33)

    def __updateMessages(self):
        """
        Update message items (position, visibility and tool tips).
        """
        items = [self.errorItem, self.warningItem, self.infoItem]
        messages = [self.__error, self.__warning, self.__info]
        for message, item in zip(messages, items):
            item.setVisible(bool(message))
            item.setToolTip(message or "")
        shown = [item for item in items if item.isVisible()]
        count = len(shown)
        if count:
            spacing = 3
            rects = [item.boundingRect() for item in shown]
            width = sum(rect.width() for rect in rects)
            width += spacing * max(0, count - 1)
            height = max(rect.height() for rect in rects)
            origin = self.shapeItem.boundingRect().top() - spacing - height
            origin = QPointF(-width / 2, origin)
            for item, rect in zip(shown, rects):
                item.setPos(origin)
                origin = origin + QPointF(rect.width() + spacing, 0)

    def mousePressEvent(self, event):
        if self.shapeItem.path().contains(event.pos()):
            return QGraphicsObject.mousePressEvent(self, event)
        else:
            event.ignore()

    def mouseDoubleClickEvent(self, event):
        if self.shapeItem.path().contains(event.pos()):
            QGraphicsObject.mouseDoubleClickEvent(self, event)
            QTimer.singleShot(0, self.activated.emit)
        else:
            event.ignore()

    def contextMenuEvent(self, event):
        if self.shapeItem.path().contains(event.pos()):
            return QGraphicsObject.contextMenuEvent(self, event)
        else:
            event.ignore()

    def focusInEvent(self, event):
        self.shapeItem.setHasFocus(True)
        return QGraphicsObject.focusInEvent(self, event)

    def focusOutEvent(self, event):
        self.shapeItem.setHasFocus(False)
        return QGraphicsObject.focusOutEvent(self, event)

    def itemChange(self, change, value):
        if change == QGraphicsItem.ItemSelectedChange:
            self.shapeItem.setSelected(value.toBool())
        elif change == QGraphicsItem.ItemPositionHasChanged:
            self.positionChanged.emit()

        return QGraphicsObject.itemChange(self, change, value)

# 需要导入模块: from PyQt4.QtGui import QGraphicsTextItem [as 别名]
# 或者: from PyQt4.QtGui.QGraphicsTextItem import document [as 别名]
class ClassModel(QGraphicsItem):

    def __init__(self, parent=None, graphicView=None, graphicScene=None):
        QGraphicsItem.__init__(self)
        self.set_default_data()
        self.className = QGraphicsTextItem(self)
        self.functionsItem = FunctionsContainerModel(self)
        self.className.setPlainText(self.defaultClassName)
        self.setFlag(self.ItemIsMovable)
        self.setFlag(self.ItemSendsGeometryChanges)
        self.functionsItem.setPos(0, self.__get_title_height())
        self.attributesItem = FunctionsContainerModel(self)
        self.attributesItem.setPos(0, self.functionsItem.get_height())

    def set_default_data(self):
        self.maxWidth = 100
        self.defaultClassNameHeight = 30
        self.defaultClassName = "No name"

    def set_functions_list(self, functionsList):
        self.functionsItem.set_functions_list(functionsList, "*", "()")
        self.update_positions()

    def set_attributes_list(self, attributesList):
        self.attributesItem.set_functions_list(attributesList)
        self.update_positions()

    def set_class_name(self, className):
        self.className.setPlainText(className)

    def _get_width(self):
        self.__calc_max_width()
        return self.maxWidth

    def __get_title_height(self):
        titleHeight = self.defaultClassNameHeight
        if titleHeight == self.className.document().size().height():
            titleHeight = self.className.document().size().height()
        return titleHeight

    def get_height(self):
        summary = self.defaultClassNameHeight
        summary += self.functionsItem.get_height()
        summary += self.attributesItem.get_height()
        return summary

    def __calc_max_width(self):
        if self.maxWidth < self.className.document().size().width():
            self.maxWidth = self.className.document().size().width()
        if hasattr(self, "functionsItem"):
            if self.maxWidth < self.functionsItem.get_width():
                self.maxWidth = self.functionsItem.get_width()
        if hasattr(self, "attributesItem"):
            if self.maxWidth < self.attributesItem.get_width():
                self.maxWidth = self.attributesItem.get_width()

    def set_bg_color(self, qColor):
        self.backgroundColor = qColor

    def set_method_list(self, itemList):
        self.methodList = itemList

    def update_positions(self):
        self.functionsItem.setPos(0, self.__get_title_height())
        self.attributesItem.setPos(
            0, self.functionsItem.y() + self.functionsItem.get_height())

    def paint(self, painter, option, widget):
        gradient = QRadialGradient(-3, -3, 10)
        if option.state & QStyle.State_Sunken:
            gradient.setCenter(3, 3)
            gradient.setFocalPoint(3, 3)
            gradient.setColorAt(0, QColor(Qt.yellow).light(120))
        else:
            gradient.setColorAt(0, QColor(Qt.yellow).light(120))
        painter.setBrush(gradient)
        painter.setPen(QPen(Qt.black, 0))
        painter.drawRoundedRect(self.boundingRect(), 3, 3)

    def boundingRect(self):
        return QRectF(0, 0, self._get_width(), self.get_height())

    def add_edge(self, edge):
        self.myEdge = edge
        edge.adjust()

# 需要导入模块: from PyQt4.QtGui import QGraphicsTextItem [as 别名]
# 或者: from PyQt4.QtGui.QGraphicsTextItem import document [as 别名]
class VennIntersectionArea(QGraphicsPathItem):
    def __init__(self, parent=None, text=""):
        super(QGraphicsPathItem, self).__init__(parent)
        self.setAcceptHoverEvents(True)
        self.setPen(QPen(Qt.NoPen))

        self.text = QGraphicsTextItem(self)
        layout = self.text.document().documentLayout()
        layout.documentSizeChanged.connect(self._onLayoutChanged)

        self._text = ""
        self._anchor = QPointF()

    def setText(self, text):
        if self._text != text:
            self._text = text
            self.text.setPlainText(text)

    def text(self):
        return self._text

    def setTextAnchor(self, pos):
        if self._anchor != pos:
            self._anchor = pos
            self._updateTextAnchor()

    def hoverEnterEvent(self, event):
        self.setZValue(self.zValue() + 1)
        return QGraphicsPathItem.hoverEnterEvent(self, event)

    def hoverLeaveEvent(self, event):
        self.setZValue(self.zValue() - 1)
        return QGraphicsPathItem.hoverLeaveEvent(self, event)

#     def mousePressEvent(self, event):
#         pos = event.pos()
#         parent = self.parentItem()
#         pbrect = parent.boundingRect()
#         w, h = pbrect.width(), pbrect.height()
#         print "(%.3f, %.3f)" % (pos.x() / w, pos.y() / h)
#         super(VennIntersectionArea, self).mousePressEvent(event)

    def paint(self, painter, option, widget=None):
        painter.save()
        path = self.path()
        brush = QBrush(self.brush())
        pen = QPen(self.pen())

        if option.state & QStyle.State_Selected:
            pen.setColor(Qt.red)
            brush.setStyle(Qt.DiagCrossPattern)
            brush.setColor(QColor(40, 40, 40, 100))

        elif option.state & QStyle.State_MouseOver:
            pen.setColor(Qt.blue)

        if option.state & QStyle.State_MouseOver:
            brush.setColor(QColor(100, 100, 100, 100))
            if brush.style() == Qt.NoBrush:
                # Make sure the highlight is actually visible.
                brush.setStyle(Qt.SolidPattern)

        painter.setPen(pen)
        painter.setBrush(brush)
        painter.drawPath(path)
        painter.restore()

    def itemChange(self, change, value):
        if change == QGraphicsPathItem.ItemSelectedHasChanged:
            if value.toBool():
                self.setZValue(self.zValue() + 1)
            else:
                self.setZValue(self.zValue() - 1)

        return QGraphicsPathItem.itemChange(self, change, value)

    def _updateTextAnchor(self):
        rect = self.text.boundingRect()
        pos = anchor_rect(rect, self._anchor)
        self.text.setPos(pos)

    def _onLayoutChanged(self):
        self._updateTextAnchor()