Cut after last label only

[stuartlynne]

My application prints either one or two labels on pre-cut 62x100 labels.

I need to cut after the last label only.

If a single label is printed cut after it.

If two labels are printed cut only after the second.

I am using pdf2image convert_from_bytes to generate an images list (from pdf on stdin.)

And then:

model = 'QL-710W'
printer = 'tcp://192.168.40.16:9100'
kwargs = { 'rotate': '90', 'cut': False, 'label': labelsize,
qlr = BrotherQLRaster(model)
instructions = convert(qlr, images, **kwargs)
send(instructions=instructions, printer_identifier=printer, backend_identifier=backend, blocking=True)

Setting cut to False I get no cut. Setting it to True I get a cut after each label.

Suggestions? Thanks!

[FriedrichFroebel]

This does not seem to be supported without further changes as both command sets handled here are supported by your model: https://github.com/pklaus/brother_ql/blob/56cf4394ad750346c6b664821ccd7489ec140dae/brother_ql/conversion.py#L175-L187 You might try to use

convert(qlr, images, **kwargs)
qlr.cut_at_end = True
qlr.add_expanded_mode()
instructions = qlr.data

but I have not tested it and this probably will not actually work.

[stuartlynne]

No, that did not work.

On Sat, Mar 2, 2024 at 1:27 AM FriedrichFroebel @.***> wrote:

This does not seem to be supported without further changes as both command sets handled here are supported by your model: https://github.com/pklaus/brother_ql/blob/56cf4394ad750346c6b664821ccd7489ec140dae/brother_ql/conversion.py#L175-L187 You might try to use

convert(qlr, images, **kwargs)qlr.cut_at_end = Trueqlr.add_expanded_mode()instructions = qlr.data

but I have not tested it and this probably will not actually work.

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[FriedrichFroebel]

Then you might want to create your custom raster class:

class CutAtEndRaster(BrotherQLRaster):
    def add_expanded_mode(self):
        self.cut_at_end = True
        return super().add_expanded_mode()

qlr = CutAtEndRaster(model)
instructions = convert(qlr, images, **kwargs)
send(instructions=instructions, printer_identifier=printer, backend_identifier=backend, blocking=True)

[stuartlynne]

That gets a cut after each label.

On Sun, Mar 3, 2024 at 9:56 AM FriedrichFroebel @.***> wrote:

Then you might want to create your custom raster class:

class CutAtEndRaster(BrotherQLRaster): def add_expanded_mode(self): self.cut_at_end = True super().add_expanded_mode()

qlr = CutAtEndRaster(model)instructions = convert(qlr, images, **kwargs)send(instructions=instructions, printer_identifier=printer, backend_identifier=backend, blocking=True)

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[FriedrichFroebel]

Did you set cut=False for this? Then you are only left with doing the same as in my previous comment with add_cut_every(n) and setting n to the number of pages you have while enabling cut=True as far as I understand.

[stuartlynne]

This is cuts every label if 'cut' is True, or no cuts if False

┆ kwargs = { 'rotate': '90', 'cut': True, 'label': labelsize, } ┆ qlr = BrotherQLRaster(model) ┆ convert(qlr, images, **kwargs) ┆ qlr.add_cut_every(2) ┆ instructions = qlr.data ┆ send(instructions=instructions, printer_identifier=printer, backend_identifier=backend, blocking=True)

This was the previous. Again with 'cut' False no cuts, 'cut' True cuts after each label.

┆ kwargs = { 'rotate': '90', 'cut': False, 'label': labelsize, } ┆ class CutAtEndRaster(BrotherQLRaster): ┆ def add_expanded_mode(self): ┆ self.cut_at_end = True ┆ super().add_expanded_mode() ┆ qlr = CutAtEndRaster(model) ┆ convert(qlr, images, **kwargs) ┆ qlr.add_expanded_mode() ┆ instructions = qlr.data ┆ send(instructions=instructions, printer_identifier=printer, backend_identifier=backend, blocking=True)

On Sun, Mar 3, 2024 at 11:57 AM FriedrichFroebel @.***> wrote:

Did you set cut=False for this? Then you are only left with doing the same as in my previous comment with add_cut_every(n) and setting n to the number of pages you have.

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[FriedrichFroebel]

convert(qlr, images, **kwargs)
qlr.add_cut_every(2)

is wrong. You need a custom BrotherQLRaster class which overrides add_cut_every with your custom logic and cut=True set, as convert does not allow you to pass these parameters directly.

[stuartlynne]

I thought something like this would work, but still get cuts after every label:

┆ kwargs = { 'rotate': '90', 'cut': False, 'label': labelsize, } ┆ class CutAtEndRaster(BrotherQLRaster): ┆ def init(self, model, pages): ┆ self.pages = pages ┆ self.page_count = 0 ┆ print('pages: %s' % (pages), file=sys.stderr) ┆ super(CutAtEndRaster, self).init(model) ┆

┆ def add_autocut(self, flag):

┆ self.page_count += 1 ┆ print('add_autocut: flag: %s page_count: %s' % (flag, self.page_count), file=sys.stderr) ┆ if self.page_count == self.pages: ┆ print('add_autocut: calling super', file=sys.stderr)

┆ super(CutAtEndRaster, self).add_autocut(flag)

┆ ┆ def add_cut_every(self, n): ┆ print('add_cut_every: n: %s overide: %s' % (n, self.pages), file=sys.stderr) ┆ if self.page_count == self.pages:

┆ print('add_autocut: calling super', file=sys.stderr)

┆ super(CutAtEndRaster, self).add_cut_every(self.pages) ┆ ┆ qlr = CutAtEndRaster(model, len(images)) ┆ convert(qlr, images, **kwargs) ┆ instructions = qlr.data ┆ send(instructions=instructions, printer_identifier=printer, backend_identifier=backend, blocking=True)

On Mon, Mar 4, 2024 at 3:15 AM FriedrichFroebel @.***> wrote:

convert(qlr, images, **kwargs) qlr.add_cut_every(2)

is wrong. You need a custom BrotherQLRaster class which overrides add_cut_every with your custom logic and cut=True set, as convert misses these parameters.

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