class SvgView(QGraphicsView):
def __init__(self, parent=None):
super(SvgView, self).__init__(parent)
self.setViewport(QWidget())
self.svgItem = None
self.image = QImage()
self.setScene(QGraphicsScene(self))
self.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
self.setDragMode(QGraphicsView.ScrollHandDrag)
self.setViewportUpdateMode(QGraphicsView.FullViewportUpdate)
def openFile(self, svg_file):
if not svg_file.exists():
return
s = self.scene()
s.clear()
self.resetTransform()
self.svgItem = QGraphicsSvgItem(svg_file.fileName())
self.svgItem.setFlags(QGraphicsItem.ItemClipsToShape)
self.svgItem.setCacheMode(QGraphicsItem.NoCache)
self.svgItem.setZValue(0)
s.addItem(self.svgItem)
self.printHotRectangles()
def printHotRectangles(self):
names="GND0,GND1,GND2,GND3,A1,A2,PVS,OUT,IN,MIC,SINE,IN1,IN2,SEN,SQR1,SQR2,OD1,CCS".split(",")
for n in names:
print(n, self.svgItem.renderer().boundsOnElement(n))
def wheelEvent(self, event):
factor = pow(1.2, event.angleDelta().y() / 240.0)
self.scale(factor, factor)
event.accept()
class SvgView(QGraphicsView):
def __init__(self, parent=None):
super(SvgView, self).__init__(parent)
self.setViewport(QWidget())
self.svgItem = None
self.image = QImage()
self.setScene(QGraphicsScene(self))
self.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
self.setDragMode(QGraphicsView.ScrollHandDrag)
self.setViewportUpdateMode(QGraphicsView.FullViewportUpdate)
def openFile(self, svg_file):
if not svg_file.exists():
return
s = self.scene()
s.clear()
self.resetTransform()
self.svgItem = QGraphicsSvgItem(svg_file.fileName())
self.svgItem.setFlags(QGraphicsItem.ItemClipsToShape)
self.svgItem.setCacheMode(QGraphicsItem.NoCache)
self.svgItem.setZValue(0)
s.addItem(self.svgItem)
self.printHotRectangles()
def printHotRectangles(self):
names = "GND0,GND1,GND2,GND3,A1,A2,PVS,OUT,IN,MIC,SINE,IN1,IN2,SEN,SQR1,SQR2,OD1,CCS".split(
",")
for n in names:
print(n, self.svgItem.renderer().boundsOnElement(n))
def wheelEvent(self, event):
factor = pow(1.2, event.angleDelta().y() / 240.0)
self.scale(factor, factor)
event.accept()
class SvgView(QGraphicsView):
Native, Image = range(2)
clicked_event = pyqtSignal(QMouseEvent)
double_click_event = pyqtSignal(QMouseEvent)
wheel_event = pyqtSignal(QWheelEvent)
def __init__(self, parent=None):
super(SvgView, self).__init__(parent)
self.renderer = SvgView.Native
self.svgItem = None
self.backgroundItem = None
self.image = QImage()
self.default_width = 0
self.default_height = 0
self.__tf_rotate = QTransform()
self.__tf_scale = QTransform()
self.setScene(QGraphicsScene(self))
def drawBackground(self, p: QPainter, rect: QRectF):
p.save()
p.resetTransform()
p.drawTiledPixmap(self.viewport().rect(),
self.backgroundBrush().texture())
p.restore()
def openFile(self, svg_file: QFile):
if not svg_file.exists():
return
if self.backgroundItem:
drawBackground = self.backgroundItem.isVisible()
else:
drawBackground = False
s = self.scene()
s.clear()
self.resetTransform()
self.svgItem = QGraphicsSvgItem(svg_file.fileName())
self.svgItem.setFlags(QGraphicsItem.ItemClipsToShape)
self.svgItem.setCacheMode(QGraphicsItem.NoCache)
self.svgItem.setZValue(0)
tmp = self.svgItem.renderer().defaultSize()
self.default_width = tmp.width()
self.default_height = tmp.height()
self.backgroundItem = QGraphicsRectItem(self.svgItem.boundingRect())
self.backgroundItem.setBrush(Qt.white)
self.backgroundItem.setPen(QPen(Qt.NoPen))
self.backgroundItem.setVisible(drawBackground)
self.backgroundItem.setZValue(-1)
s.addItem(self.backgroundItem)
s.addItem(self.svgItem)
def setRenderer(self, renderer):
self.renderer = renderer
self.setViewport(QWidget())
def setViewBackground(self, enable):
if self.backgroundItem:
self.backgroundItem.setVisible(enable)
def paintEvent(self, event: QPaintEvent):
if self.renderer == SvgView.Image:
if self.image.size() != self.viewport().size():
self.image = QImage(self.viewport().size(),
QImage.Format_ARGB32_Premultiplied)
imagePainter = QPainter(self.image)
QGraphicsView.render(self, imagePainter)
imagePainter.end()
p = QPainter(self.viewport())
p.drawImage(0, 0, self.image)
else:
super(SvgView, self).paintEvent(event)
def _setSize(self, width: float, height: float):
self.__tf_scale = QTransform.fromScale(width / self.default_width,
height / self.default_height)
self.__tf()
def _setAngle(self, angle: float):
self.__tf_rotate = QTransform().rotate(angle)
self.__tf()
def __tf(self):
self.setTransform(self.__tf_rotate * self.__tf_scale)
def mouseReleaseEvent(self, event: QMouseEvent):
self.clicked_event.emit(event)
def mouseDoubleClickEvent(self, event: QMouseEvent):
self.double_click_event.emit(event)
def wheelEvent(self, event: QWheelEvent):
self.wheel_event.emit(event)
