def load_image(self, data):
self.is_valid = False
try:
fmt = identify_data(data)[-1].encode('ascii')
except Exception:
fmt = b''
self.original_image_format = fmt.decode('ascii').lower()
self.selection_state.reset()
self.original_image_data = data
self.current_image = i = self.original_image = (
QImage.fromData(data, format=fmt) if fmt else QImage.fromData(data))
self.is_valid = not i.isNull()
self.update()
self.image_changed.emit(self.current_image)
def magick_to_qimage(img):
fmt = get_pixel_map()
# ImageMagick can only output raw data in some formats that can be
# read into QImage directly, if the QImage format is not one of those, use
# PNG
if fmt in {'RGBA', 'BGRA'}:
w, h = img.size
img.depth = 8 # QImage expects 8bpp
raw = img.export(fmt)
i = QImage(raw, w, h, QImage.Format_ARGB32)
del raw # According to the documentation, raw is supposed to not be deleted, but it works, so make it explicit
return i
else:
raw = img.export('PNG')
return QImage.fromData(QByteArray(raw), 'PNG')
def copyToClipboard(self):
with BytesIO() as buffer:
self._figure.savefig(buffer,
facecolor=self._figure.get_facecolor())
QApplication.clipboard().setImage(
QImage.fromData(buffer.getvalue()))
