def plotSVG(self, width, height, output_file, _plotting_object = None):
"""Plots the data specified in the current input file as a page in a
PDF file with the given width and height, writing the output to the
specified output file. Returns the SVG object produced."""
printer = QPrinter()
svg = QSvgGenerator()
svg.setFileName(output_file)
svg.setSize(QSize(width, height))
svg.setViewBox(QRect(0, 0, width, height))
svg.setResolution(printer.resolution())
return self._plot(width, height, svg, _plotting_object)[0]
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 _get_composer_svg_image(self, width, height, dpi):
# from qgscomposer.cpp, QgsComposer::on_mActionExportAsSVG_triggered,
# line 1909, near end of function
svgpath = getTempfilePath('svg')
temp_size = os.path.getsize(svgpath)
svg_g = QSvgGenerator()
# noinspection PyArgumentList
svg_g.setTitle(QgsProject.instance().title())
svg_g.setFileName(svgpath)
# width and height in pixels
# svg_w = int(self._c.paperWidth() * self._c.printResolution() / 25.4)
# svg_h = int(self._c.paperHeight() * self._c.printResolution() / 25.4)
svg_w = width
svg_h = height
svg_g.setSize(QSize(svg_w, svg_h))
svg_g.setViewBox(QRect(0, 0, svg_w, svg_h))
# because the rendering is done in mm, convert the dpi
# svg_g.setResolution(self._c.printResolution())
svg_g.setResolution(dpi)
sp = QPainter(svg_g)
self._c.renderPage(sp, 0)
sp.end()
if temp_size == os.path.getsize(svgpath):
# something went pear-shaped
return False, ''
image = QImage(width, height, QImage.Format_ARGB32)
image.fill(QColor(152, 219, 249).rgb())
image.setDotsPerMeterX(dpi / 25.4 * 1000)
image.setDotsPerMeterY(dpi / 25.4 * 1000)
svgr = QSvgRenderer(svgpath)
p = QPainter(image)
svgr.render(p)
p.end()
filepath = getTempfilePath('png')
res = image.save(filepath, 'png')
if not res:
os.unlink(filepath)
filepath = ''
# TODO: remove .svg file as well?
return res, filepath
def _get_composer_svg_image(self, width, height, dpi):
# from qgscomposer.cpp, QgsComposer::on_mActionExportAsSVG_triggered,
# near end of function
svgpath = getTempfilePath('svg')
temp_size = os.path.getsize(svgpath)
svg_g = QSvgGenerator()
# noinspection PyArgumentList
svg_g.setTitle(QgsProject.instance().title())
svg_g.setFileName(svgpath)
svg_g.setSize(QSize(width, height))
svg_g.setViewBox(QRect(0, 0, width, height))
svg_g.setResolution(dpi)
sp = QPainter(svg_g)
self._c.renderPage(sp, 0)
sp.end()
if temp_size == os.path.getsize(svgpath):
return False, ''
image = QImage(width, height,
self._TestMapSettings.outputImageFormat())
image.fill(QColor(152, 219, 249).rgb())
image.setDotsPerMeterX(dpi / 25.4 * 1000)
image.setDotsPerMeterY(dpi / 25.4 * 1000)
svgr = QSvgRenderer(svgpath)
p = QPainter(image)
p.setRenderHint(
QPainter.Antialiasing,
self._TestMapSettings.testFlag(QgsMapSettings.Antialiasing))
p.setRenderHint(QPainter.TextAntialiasing)
svgr.render(p)
p.end()
filepath = getTempfilePath('png')
res = image.save(filepath, 'png')
if not res:
os.unlink(filepath)
filepath = ''
# TODO: remove .svg file as well?
return res, filepath
def _get_composer_svg_image(self, width, height, dpi):
# from qgscomposer.cpp, QgsComposer::on_mActionExportAsSVG_triggered,
# near end of function
svgpath = getTempfilePath('svg')
temp_size = os.path.getsize(svgpath)
svg_g = QSvgGenerator()
# noinspection PyArgumentList
svg_g.setTitle(QgsProject.instance().title())
svg_g.setFileName(svgpath)
svg_g.setSize(QSize(width, height))
svg_g.setViewBox(QRect(0, 0, width, height))
svg_g.setResolution(dpi)
sp = QPainter(svg_g)
self._c.renderPage(sp, 0)
sp.end()
if temp_size == os.path.getsize(svgpath):
return False, ''
image = QImage(width, height, self._TestMapSettings.outputImageFormat())
image.fill(QColor(152, 219, 249).rgb())
image.setDotsPerMeterX(dpi / 25.4 * 1000)
image.setDotsPerMeterY(dpi / 25.4 * 1000)
svgr = QSvgRenderer(svgpath)
p = QPainter(image)
p.setRenderHint(
QPainter.Antialiasing,
self._TestMapSettings.testFlag(QgsMapSettings.Antialiasing)
)
p.setRenderHint(QPainter.TextAntialiasing)
svgr.render(p)
p.end()
filepath = getTempfilePath('png')
res = image.save(filepath, 'png')
if not res:
os.unlink(filepath)
filepath = ''
# TODO: remove .svg file as well?
return res, filepath
