def render_html(self, ok):
try:
if not ok:
return
cwidth, cheight = self.page.mainFrame().contentsSize().width(
), self.page.mainFrame().contentsSize().height()
self.page.setViewportSize(QSize(cwidth, cheight))
factor = float(self.width) / cwidth if cwidth > self.width else 1
cutoff_height = int(self.height / factor) - 3
image = QImage(self.page.viewportSize(), QImage.Format_ARGB32)
image.setDotsPerMeterX(self.dpi * (100 / 2.54))
image.setDotsPerMeterY(self.dpi * (100 / 2.54))
painter = QPainter(image)
self.page.mainFrame().render(painter)
painter.end()
cheight = image.height()
cwidth = image.width()
pos = 0
while pos < cheight:
img = image.copy(0, pos, cwidth,
min(cheight - pos, cutoff_height))
pos += cutoff_height - 20
if cwidth > self.width:
img = img.scaledToWidth(self.width, Qt.SmoothTransform)
f = os.path.join(self.tdir, '%d.png' % pos)
img.save(f)
self.images.append((f, img.width(), img.height()))
finally:
QApplication.quit()
def __call__(self, ok):
from PyQt5.Qt import QImage, QPainter, QByteArray, QBuffer
try:
if not ok:
raise RuntimeError('Rendering of HTML failed.')
de = self.page.mainFrame().documentElement()
pe = de.findFirst('parsererror')
if not pe.isNull():
raise ParserError(pe.toPlainText())
image = QImage(self.page.viewportSize(), QImage.Format_ARGB32)
image.setDotsPerMeterX(96*(100/2.54))
image.setDotsPerMeterY(96*(100/2.54))
painter = QPainter(image)
self.page.mainFrame().render(painter)
painter.end()
ba = QByteArray()
buf = QBuffer(ba)
buf.open(QBuffer.WriteOnly)
image.save(buf, 'JPEG')
self.data = str(ba.data())
except Exception as e:
self.exception = e
self.traceback = traceback.format_exc()
finally:
self.loop.exit(0)
def __call__(self, ok):
from PyQt5.Qt import QImage, QPainter, QByteArray, QBuffer
try:
if not ok:
raise RuntimeError('Rendering of HTML failed.')
de = self.page.mainFrame().documentElement()
pe = de.findFirst('parsererror')
if not pe.isNull():
raise ParserError(pe.toPlainText())
image = QImage(self.page.viewportSize(), QImage.Format_ARGB32)
image.setDotsPerMeterX(96*(100/2.54))
image.setDotsPerMeterY(96*(100/2.54))
painter = QPainter(image)
self.page.mainFrame().render(painter)
painter.end()
ba = QByteArray()
buf = QBuffer(ba)
buf.open(QBuffer.WriteOnly)
image.save(buf, 'JPEG')
self.data = bytes(ba.data())
except Exception as e:
self.exception = e
self.traceback = traceback.format_exc()
finally:
self.loop.exit(0)
def render_html(self, ok):
try:
if not ok:
return
cwidth, cheight = self.page.mainFrame().contentsSize().width(), self.page.mainFrame().contentsSize().height()
self.page.setViewportSize(QSize(cwidth, cheight))
factor = float(self.width)/cwidth if cwidth > self.width else 1
cutoff_height = int(self.height/factor)-3
image = QImage(self.page.viewportSize(), QImage.Format_ARGB32)
image.setDotsPerMeterX(self.dpi*(100/2.54))
image.setDotsPerMeterY(self.dpi*(100/2.54))
painter = QPainter(image)
self.page.mainFrame().render(painter)
painter.end()
cheight = image.height()
cwidth = image.width()
pos = 0
while pos < cheight:
img = image.copy(0, pos, cwidth, min(cheight-pos, cutoff_height))
pos += cutoff_height-20
if cwidth > self.width:
img = img.scaledToWidth(self.width, Qt.SmoothTransform)
f = os.path.join(self.tdir, '%d.png'%pos)
img.save(f)
self.images.append((f, img.width(), img.height()))
finally:
QApplication.quit()
def main():
app = QApplication([])
app
tdir = os.path.abspath('.')
pdf = os.path.join(tdir, 'painter.pdf')
func = full
dpi = 100
with open(pdf, 'wb') as f:
dev = PdfDevice(f, xdpi=dpi, ydpi=dpi, compress=False)
img = QImage(dev.width(), dev.height(),
QImage.Format_ARGB32_Premultiplied)
img.setDotsPerMeterX(dpi*39.37)
img.setDotsPerMeterY(dpi*39.37)
img.fill(Qt.white)
run(dev, func)
run(img, func)
path = os.path.join(tdir, 'painter.png')
img.save(path)
print('PDF written to:', pdf)
print('Image written to:', path)