def paint(self, painter, option, widget=None):
if not self.__icon.isNull():
if option.state & QStyle.State_Selected:
mode = QIcon.Selected
elif option.state & QStyle.State_Enabled:
mode = QIcon.Normal
elif option.state & QStyle.State_Active:
mode = QIcon.Active
else:
mode = QIcon.Disabled
transform = self.sceneTransform()
if widget is not None:
# 'widget' is the QGraphicsView.viewport()
view = widget.parent()
if isinstance(view, QGraphicsView):
# Combine the scene transform with the view transform.
view_transform = view.transform()
transform = view_transform * view_transform
lod = option.levelOfDetailFromTransform(transform)
w, h = self.__iconSize.width(), self.__iconSize.height()
target = QRectF(0, 0, w, h)
source = QRectF(0, 0, w * lod, w * lod).toRect()
# The actual size of the requested pixmap can be smaller.
size = self.__icon.actualSize(source.size(), mode=mode)
source.setSize(size)
pixmap = self.__icon.pixmap(source.size(), mode=mode)
painter.setRenderHint(
QPainter.SmoothPixmapTransform,
self.__transformationMode == Qt.SmoothTransformation
)
painter.drawPixmap(target, pixmap, QRectF(source))
def paint(self, painter, option, widget=None):
if not self.__icon.isNull():
if option.state & QStyle.State_Selected:
mode = QIcon.Selected
elif option.state & QStyle.State_Enabled:
mode = QIcon.Normal
elif option.state & QStyle.State_Active:
mode = QIcon.Active
else:
mode = QIcon.Disabled
transform = self.sceneTransform()
if widget is not None:
# 'widget' is the QGraphicsView.viewport()
view = widget.parent()
if isinstance(view, QGraphicsView):
# Combine the scene transform with the view transform.
view_transform = view.transform()
transform = view_transform * view_transform
lod = option.levelOfDetailFromTransform(transform)
w, h = self.__iconSize.width(), self.__iconSize.height()
target = QRectF(0, 0, w, h)
source = QRectF(0, 0, w * lod, w * lod).toRect()
# The actual size of the requested pixmap can be smaller.
size = self.__icon.actualSize(source.size(), mode=mode)
source.setSize(size)
pixmap = self.__icon.pixmap(source.size(), mode=mode)
painter.setRenderHint(
QPainter.SmoothPixmapTransform,
self.__transformationMode == Qt.SmoothTransformation)
painter.drawPixmap(target, pixmap, QRectF(source))
def grab_svg(scene):
# type: (QGraphicsScene) -> str
"""
Return a SVG rendering of the scene contents.
Parameters
----------
scene : :class:`CanvasScene`
"""
svg_buffer = QBuffer()
gen = _QSvgGenerator()
gen.setOutputDevice(svg_buffer)
items_rect = scene.itemsBoundingRect().adjusted(-10, -10, 10, 10)
if items_rect.isNull():
items_rect = QRectF(0, 0, 10, 10)
width, height = items_rect.width(), items_rect.height()
rect_ratio = float(width) / height
# Keep a fixed aspect ratio.
aspect_ratio = 1.618
if rect_ratio > aspect_ratio:
height = int(height * rect_ratio / aspect_ratio)
else:
width = int(width * aspect_ratio / rect_ratio)
target_rect = QRectF(0, 0, width, height)
source_rect = QRectF(0, 0, width, height)
source_rect.moveCenter(items_rect.center())
gen.setSize(target_rect.size().toSize())
gen.setViewBox(target_rect)
painter = QPainter(gen)
# Draw background.
painter.setPen(Qt.NoPen)
painter.setBrush(scene.palette().base())
painter.drawRect(target_rect)
# Render the scene
scene.render(painter, target_rect, source_rect)
painter.end()
buffer_str = bytes(svg_buffer.buffer())
return buffer_str.decode("utf-8")
def grab_svg(scene):
"""
Return a SVG rendering of the scene contents.
Parameters
----------
scene : :class:`CanvasScene`
"""
from AnyQt.QtSvg import QSvgGenerator
svg_buffer = QBuffer()
gen = QSvgGenerator()
gen.setOutputDevice(svg_buffer)
items_rect = scene.itemsBoundingRect().adjusted(-10, -10, 10, 10)
if items_rect.isNull():
items_rect = QRectF(0, 0, 10, 10)
width, height = items_rect.width(), items_rect.height()
rect_ratio = float(width) / height
# Keep a fixed aspect ratio.
aspect_ratio = 1.618
if rect_ratio > aspect_ratio:
height = int(height * rect_ratio / aspect_ratio)
else:
width = int(width * aspect_ratio / rect_ratio)
target_rect = QRectF(0, 0, width, height)
source_rect = QRectF(0, 0, width, height)
source_rect.moveCenter(items_rect.center())
gen.setSize(target_rect.size().toSize())
gen.setViewBox(target_rect)
painter = QPainter(gen)
# Draw background.
painter.setBrush(QBrush(Qt.white))
painter.drawRect(target_rect)
# Render the scene
scene.render(painter, target_rect, source_rect)
painter.end()
buffer_str = bytes(svg_buffer.buffer())
return buffer_str.decode("utf-8")
def setGeometry(self, rect: QRectF) -> None:
resized = rect.size() != self.geometry()
super().setGeometry(rect)
if resized and self.__resizeContents:
self.__updateScale()
self.__layout()