# Source code for tecplot.text.label_format

    from builtins import int, str, super

    from ..tecutil import _tecutil
    from ..constant import *
    from ..exception import *
    from .. import session
    from ..tecutil import Index, StringList, flatten_args, lock, sv

    class LabelFormat(session.Style):
        """Formatting of numbers shown along in axes and in legends.

        This example shows how to format tick label along an axis:

        .. code-block:: python
            :emphasize-lines: 31-36

            from datetime import datetime
            import tecplot as tp
            from tecplot.constant import PlotType, AxisMode, AxisAlignment, NumberFormat

            tp.new_layout()
            plot = tp.active_frame().plot(tp.constant.PlotType.Sketch)
            plot.activate()

            # setup the plot area margins
            plot.axes.viewport.left = 10
            plot.axes.viewport.right = 90

            # show the x-axis, set the title, and alignment with the viewport
            xaxis = plot.axes.x_axis
            xaxis.show = True
            xaxis.title.text = 'Negative numbers in parentheses'
            xaxis.title.offset = 20
            xaxis.line.alignment = AxisAlignment.WithViewport
            xaxis.line.position = 50

            # set limits, tick placement and tick label properties
            xaxis.ticks.auto_spacing = False
            xaxis.min, xaxis.max = -5.123e-5, 5.234e-5
            xaxis.ticks.spacing = (xaxis.max - xaxis.min) / 6
            xaxis.ticks.spacing_anchor = 0
            xaxis.tick_labels.angle = 45
            xaxis.tick_labels.offset = 3

            # format the tick labels in superscript form. example: 1.234x10^5
            # format negative numbers to use parentheses instead of a negative sign
            xformat = xaxis.tick_labels.format
            xformat.format_type = NumberFormat.SuperScript
            xformat.precision = 3
            xformat.show_negative_sign = False
            xformat.negative_prefix = '('
            xformat.negative_suffix = ')'

            tp.export.save_png('label_format.png', 600, supersample=3)

        ..  figure:: /_static/images/label_format.png
            :width: 300px
            :figwidth: 300px
        """
        def __init__(self, labels):
            self.labels = labels
            super().__init__(labels._sv, sv.NUMFORMAT, **labels._style_attrs)

        @property
        def format_type(self):
            """`NumberFormat`: Type of number formatting to use.

            Possible values: `Integer`, `FixedFloat`, `Exponential`, `BestFloat`,
            `SuperScript`, `CustomLabel`, `LogSuperScript`, `RangeBestFloat`,
            `DynamicLabel`, `TimeDate`.

            Example usage::

                >>> from tecplot.constant import NumberFormat
                >>> axis.tick_labels.format.format_type = NumberFormat.BestFloat
            """
            return self._get_style(NumberFormat, sv.FORMATTING)

        @format_type.setter
        def format_type(self, value):
            self._set_style(NumberFormat(value), sv.FORMATTING)

        @property
        def custom_labels_index(self):
            """`Index` (zero-based): Index of the custom label to use.

            Example usage::

                >>> axis.tick_labels.format.custom_labels_index = 0
            """
            return self._get_style(Index, sv.CUSTOMLABEL)

        @custom_labels_index.setter
        def custom_labels_index(self, index):
            index = (self.num_custom_labels + index) if index < 0 else index
            self._set_style(Index(index), sv.CUSTOMLABEL)

        @property
        def num_custom_labels(self):
            """`int`: Number of custom label sets available to use.

            Example usage::

                >>> print(axis.tick_labels.format.num_custom_labels)
                1
            """
            return _tecutil.CustomLabelsGetNumSets()

        def custom_labels(self, index):
            """List of labels for custom labels for set specified by index.

            Example usage::

                >>> axis.tick_labels.format.custom_labels(0)
                ['apples', 'bananas', 'carrots']
            """
            index = (self.num_custom_labels + index) if index < 0 else index
            sl = _tecutil.CustomLabelsGet(index + 1)
            ret = list(sl)
            sl.dealloc()
            return ret

        @lock()
        def add_custom_labels(self, *labels):
            """Append a list of custom labels as a new set.

            Example usage::

                >>> labels = ['apples', 'bananas', 'carrots']
                >>> axis.tick_labels.format.add_custom_labels(*labels)
                >>> print(axis.tick_labels.format.custom_labels(-1))
                ['apples', 'bananas', 'carrots']
            """
            with StringList(*flatten_args(labels)) as sl:
                if not _tecutil.CustomLabelsAppend(sl):
                    raise TecplotSystemError()

        @property
        def precision(self):
            """`int`: Number digits after decimal for fixed floating point format.

            Example usage::

                >>> from tecplot.constant import NumberFormat
                >>> axis.tick_labels.format.format_type = NumberFormat.FixedFloat
                >>> axis.tick_labels.format.precision = 3
            """
            return self._get_style(int, sv.PRECISION)

        @precision.setter
        def precision(self, value):
            self._set_style(int(value), sv.PRECISION)

        @property
        def remove_leading_zeros(self):
            """`bool`: Strip leading zeros in the formatted number.

            Example usage::

                >>> axis.tick_labels.format.remove_leading_zeros = True
            """
            return self._get_style(bool, sv.REMOVELEADINGZEROS)

        @remove_leading_zeros.setter
        def remove_leading_zeros(self, value):
            self._set_style(bool(value), sv.REMOVELEADINGZEROS)

        @property
        def show_decimals_on_whole_numbers(self):
            """`bool`: Include trailing decimal character with whole numbers.

            Example usage::

                >>> axis.tick_labels.format.show_decimals_on_whole_numbers = True
            """
            return self._get_style(bool, sv.SHOWDECIMALSONWHOLENUMBERS)

        @show_decimals_on_whole_numbers.setter
        def show_decimals_on_whole_numbers(self, value):
            self._set_style(bool(value), sv.SHOWDECIMALSONWHOLENUMBERS)

        @property
        def show_negative_sign(self):
            """`bool`: Include negative sign for negative values.

            Example usage::

                >>> axis.tick_labels.format.show_negative_sign = True
            """
            return self._get_style(bool, sv.SHOWNEGATIVESIGN)

        @show_negative_sign.setter
        def show_negative_sign(self, value):
            self._set_style(bool(value), sv.SHOWNEGATIVESIGN)

        @property
        def negative_prefix(self):
            """`str`: Prefix string to use for negative valued tick labels.

            This example shows how to use parentheses instead of a negative sign::

                >>> axis.tick_labels.format.show_negative_sign = False
                >>> axis.tick_labels.format.negative_prefix = '('
                >>> axis.tick_labels.format.negative_suffix = ')'
            """
            return self._get_style(str, sv.NEGATIVEPREFIX)

        @negative_prefix.setter
        def negative_prefix(self, value):
            self._set_style(str(value), sv.NEGATIVEPREFIX)

        @property
        def negative_suffix(self):
            """`str`: Suffix string to use for negative valued tick labels.

            This example shows how to use parentheses instead of a negative sign::

                >>> axis.tick_labels.format.show_negative_sign = False
                >>> axis.tick_labels.format.negative_prefix = '('
                >>> axis.tick_labels.format.negative_suffix = ')'
            """
            return self._get_style(str, sv.NEGATIVESUFFIX)

        @negative_suffix.setter
        def negative_suffix(self, value):
            self._set_style(str(value), sv.NEGATIVESUFFIX)

        @property
        def positive_prefix(self):
            """`str`: Prefix string to use for positive valued tick labels.

            Example usage::

                >>> axis.tick_labels.format.positive_prefix = 'increase: '
            """
            return self._get_style(str, sv.POSITIVEPREFIX)

        @positive_prefix.setter
        def positive_prefix(self, value):
            self._set_style(str(value), sv.POSITIVEPREFIX)

        @property
        def positive_suffix(self):
            """`str`: Suffix string to use for positive valued tick labels.

            Example usage::

                >>> axis.tick_labels.format.positive_suffix = ' (m)'
            """
            return self._get_style(str, sv.POSITIVESUFFIX)

        @positive_suffix.setter
        def positive_suffix(self, value):
            self._set_style(str(value), sv.POSITIVESUFFIX)

        @property
        def zero_prefix(self):
            """`str`: Prefix string to use for zero valued tick labels.

            Example usage::

                >>> axis.tick_labels.format.zero_prefix = 'origin: '
            """
            return self._get_style(str, sv.ZEROPREFIX)

        @zero_prefix.setter
        def zero_prefix(self, value):
            self._set_style(str(value), sv.ZEROPREFIX)

        @property
        def zero_suffix(self):
            """`str`: Suffix string to use for zero valued tick labels.

            Example usage::

                >>> axis.tick_labels.format.zero_suffix = ' (origin)'
            """
            return self._get_style(str, sv.ZEROSUFFIX)

        @zero_suffix.setter
        def zero_suffix(self, value):
            self._set_style(str(value), sv.ZEROSUFFIX)

        @property
        def datetime_format(self):
            r"""`str`: The date/time format to be used.

            Example usage::

                >>> from tecplot.constant import NumberFormat
                >>> axis.tick_labels.format.format_type = NumberFormat.TimeDate
                >>> axis.tick_labels.format.datetime_format = 'mmm d, yyyy'

            The format can be any combination of the following codes. Placing a
            backslash in front of a y, m, d, or s in the Time/Date formula will
            keep it from being processed as part of the formula. All characters not
            part of the Time/Date formula will appear as entered. For example,
            "\\year yyyy" will appear as "year 2008", as the backslash keeps the
            first y from being processed as part of the formula. If you use "m"
            immediately after the "h" or "hh" code or immediately before the "ss"
            code, the minutes instead of the month will be displayed.

            =============== =========================
            Years:
            -----------------------------------------
                ``yy``      00-99
                ``yyyy``    1800-9999
            --------------- -------------------------
            Months:
            -----------------------------------------
                ``m``       1-12
                ``mm``      01-12
                ``mmm``     Jan-Dec
                ``mmmm``    January-December
                ``mmmmm``   first letter of the month
            --------------- -------------------------
            Days:
            -----------------------------------------
                ``[d]``     elapsed days
                ``d``       1-31
                ``dd``      01-31
                ``ddd``     Sun-Sat
                ``dddd``    Sunday-Saturday
                ``ddddd``   S,M,T,W,T,F,S
            --------------- -------------------------
            Hours:
            -----------------------------------------
                ``[h]``     elapsed hours
                ``h``       0-23 or 1-12
                ``hh``      00-23 or 1-12
                ``AM/PM``   AM or PM
                ``A/P``     AM or PM as "A" or "P"
            --------------- -------------------------
            Minutes:
            -----------------------------------------
                ``[m]``     elapsed minutes
                ``m``       0-59
                ``mm``      00-59
            --------------- -------------------------
            Seconds:
            --------------- -------------------------
                ``s``       0-59
                ``ss``      00-59
                ``.0``      Tenths
                ``.00``     Hundredths
                ``.000``    Thousandths
            =============== =========================

            To display the time and date on your plot as a "Sat-Jan-05-2008", enter
            the following code::

                "ddd-mmm-dd-yyyy"

            To display the time and date on your plot as a "1-3-08", enter the
            following code::

                "m-d-yy"

            To display the time and date on your plot as a "9:30:05 AM", enter the
            following code::

                "h:mm:ss AM"

            To display an elapsed time, such as "3:10:15", enter the following
            code::

                "[d]:hh:mm"
            """
            return self._get_style(str, sv.TIMEDATEFORMAT)

        @datetime_format.setter
        def datetime_format(self, value):
            self._set_style(str(value), sv.TIMEDATEFORMAT)