def export_scene(canvas, width, height, dpi, exportFileName):
""" This function exports the scene to a file. """
# need this to make sure we take away focus from
# any currently selected legend items
canvas.clearFocus()
with HiddenStitchManager(canvas):
# NOTE: We seem to need the 1px buffer region to avoid
# the image being cut off
margin = 10
theScene = visible_bounding_rect(canvas.items())
theScene.adjust(-margin, -margin, margin, margin)
# check if user requested an svg file
svg = True if QFileInfo(exportFileName).completeSuffix() == "svg" \
else False
if svg:
generator = QSvgGenerator()
generator.setFileName(exportFileName)
generator.setSize(QSize(width, height))
generator.setViewBox(QRect(0, 0, width, height))
generator.setTitle("sconcho generated SVG image")
generator.setDescription("this svg image was exported from "
"a sconcho project")
generator.setResolution(dpi)
else:
generator = QImage(width+2*margin, height+2*margin,
QImage.Format_ARGB32_Premultiplied)
generator.fill(1)
inchesToMeter = 39.3700787
generator.setDotsPerMeterX(dpi*inchesToMeter)
generator.setDotsPerMeterY(dpi*inchesToMeter)
painter = QPainter(generator)
painter.setRenderHints(QPainter.SmoothPixmapTransform
| QPainter.HighQualityAntialiasing
| QPainter.TextAntialiasing )
painter.setBackgroundMode(Qt.TransparentMode )
canvas.render(painter, QRectF(), theScene )
painter.end()
if not svg:
generator.save(exportFileName)
def export_scene(canvas, width, height, dpi, exportFileName):
""" This function exports the scene to a file. """
# need this to make sure we take away focus from
# any currently selected legend items
canvas.clearFocus()
with HiddenStitchManager(canvas):
# NOTE: We seem to need the 1px buffer region to avoid
# the image being cut off
margin = 10
theScene = visible_bounding_rect(canvas.items())
theScene.adjust(-margin, -margin, margin, margin)
# check if user requested an svg file
svg = True if QFileInfo(exportFileName).completeSuffix() == "svg" \
else False
if svg:
generator = QSvgGenerator()
generator.setFileName(exportFileName)
generator.setSize(QSize(width, height))
generator.setViewBox(QRect(0, 0, width, height))
generator.setTitle("sconcho generated SVG image")
generator.setDescription("this svg image was exported from "
"a sconcho project")
generator.setResolution(dpi)
else:
generator = QImage(width + 2 * margin, height + 2 * margin,
QImage.Format_ARGB32_Premultiplied)
generator.fill(1)
inchesToMeter = 39.3700787
generator.setDotsPerMeterX(dpi * inchesToMeter)
generator.setDotsPerMeterY(dpi * inchesToMeter)
painter = QPainter(generator)
painter.setRenderHints(QPainter.SmoothPixmapTransform
| QPainter.HighQualityAntialiasing
| QPainter.TextAntialiasing)
painter.setBackgroundMode(Qt.TransparentMode)
canvas.render(painter, QRectF(), theScene)
painter.end()
if not svg:
generator.save(exportFileName)
def saveGraph(self):
sizeDlg = OWChooseImageSizeDlg(self.dendrogram, parent=self)
filename = sizeDlg.getFileName(
"graph",
"Portable Network Graphics (*.PNG);;"
"Windows Bitmap (*.BMP);;"
"Graphics Interchange Format (*.GIF);;"
"Scalable Vector Graphics (*.SVG)",
".png",
)
if not filename:
return
_, ext = os.path.splitext(filename)
ext = ext.lower()
canvases = (self.headerView.scene(), self.dendrogramView.scene(), self.footerView.scene())
width = max([c.width() for c in canvases])
height = sum([c.height() for c in canvases])
size = QSize(width, height)
if ext == ".svg":
device = QSvgGenerator()
device.setTitle("Dendrogram Plot")
device.setFileName(filename)
device.setSize(size)
device.setViewBox(QRect(QPoint(0, 0), size))
else:
device = QPixmap(size)
device.fill(Qt.white)
painter = QPainter()
painter.begin(device)
painter.setRenderHint(QPainter.Antialiasing)
self.renderDendrogram(painter)
painter.end()
if ext != ".svg":
device.save(filename)
def saveGraph(self):
sizeDlg = OWChooseImageSizeDlg(self.dendrogram, parent=self)
filename = sizeDlg.getFileName(
"graph", "Portable Network Graphics (*.PNG);;"
"Windows Bitmap (*.BMP);;"
"Graphics Interchange Format (*.GIF);;"
"Scalable Vector Graphics (*.SVG)", ".png")
if not filename:
return
_, ext = os.path.splitext(filename)
ext = ext.lower()
canvases = (self.headerView.scene(), self.dendrogramView.scene(),
self.footerView.scene())
width = max([c.width() for c in canvases])
height = sum([c.height() for c in canvases])
size = QSize(width, height)
if ext == ".svg":
device = QSvgGenerator()
device.setTitle("Dendrogram Plot")
device.setFileName(filename)
device.setSize(size)
device.setViewBox(QRect(QPoint(0, 0), size))
else:
device = QPixmap(size)
device.fill(Qt.white)
painter = QPainter()
painter.begin(device)
painter.setRenderHint(QPainter.Antialiasing)
self.renderDendrogram(painter)
painter.end()
if ext != ".svg":
device.save(filename)
