// This file was generated by gir (https://github.com/gtk-rs/gir)
// from
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::{Buffer, View};
use glib::{
    prelude::*,
    signal::{connect_raw, SignalHandlerId},
    translate::*,
};
use std::{boxed::Box as Box_, fmt, mem::transmute};

glib::wrapper! {
    ///
    ///
    /// ## Properties
    ///
    ///
    /// #### `body-font-name`
    ///  Name of the font used for the text body.
    ///
    /// Accepted values are strings representing a font description Pango can understand.
    /// (e.g. "Monospace 10"). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `buffer`
    ///  The GtkSourceBuffer object to print.
    ///
    /// Readable | Writeable | Construct Only
    ///
    ///
    /// #### `footer-font-name`
    ///  Name of the font used to print page footer.
    /// If this property is unspecified, the text body font is used.
    ///
    /// Accepted values are strings representing a font description Pango can understand.
    /// (e.g. "Monospace 10"). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `header-font-name`
    ///  Name of the font used to print page header.
    /// If this property is unspecified, the text body font is used.
    ///
    /// Accepted values are strings representing a font description Pango can understand.
    /// (e.g. "Monospace 10"). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `highlight-syntax`
    ///  Whether to print the document with highlighted syntax.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `line-numbers-font-name`
    ///  Name of the font used to print line numbers on the left margin.
    /// If this property is unspecified, the text body font is used.
    ///
    /// Accepted values are strings representing a font description Pango can understand.
    /// (e.g. "Monospace 10"). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `n-pages`
    ///  The number of pages in the document or `<code>`-1`</code>` if the
    /// document has not been completely paginated.
    ///
    /// Readable
    ///
    ///
    /// #### `print-footer`
    ///  Whether to print a footer in each page.
    ///
    /// Note that by default the footer format is unspecified, and if it is
    /// unspecified the footer will not be printed, regardless of the value of
    /// this property.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `print-header`
    ///  Whether to print a header in each page.
    ///
    /// Note that by default the header format is unspecified, and if it is
    /// unspecified the header will not be printed, regardless of the value of
    /// this property.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `print-line-numbers`
    ///  Interval of printed line numbers. If this property is set to 0 no
    /// numbers will be printed. If greater than 0, a number will be
    /// printed every "print-line-numbers" lines (i.e. 1 will print all line numbers).
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `tab-width`
    ///  Width of a tab character expressed in spaces.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `wrap-mode`
    ///  Whether to wrap lines never, at word boundaries, or at character boundaries.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    ///
    /// Readable | Writeable
    ///
    /// # Implements
    ///
    /// [`PrintCompositorExt`][trait@crate::prelude::PrintCompositorExt]
    #[doc(alias = "GtkSourcePrintCompositor")]
    pub struct PrintCompositor(Object<ffi::GtkSourcePrintCompositor, ffi::GtkSourcePrintCompositorClass>);

    match fn {
        type_ => || ffi::gtk_source_print_compositor_get_type(),
    }
}

impl PrintCompositor {
    pub const NONE: Option<&'static PrintCompositor> = None;

    /// Creates a new print compositor that can be used to print `buffer`.
    /// ## `buffer`
    /// the [`Buffer`][crate::Buffer] to print.
    ///
    /// # Returns
    ///
    /// a new print compositor object.
    #[doc(alias = "gtk_source_print_compositor_new")]
    pub fn new(buffer: &impl IsA<Buffer>) -> PrintCompositor {
        skip_assert_initialized!();
        unsafe {
            from_glib_full(ffi::gtk_source_print_compositor_new(
                buffer.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Creates a new print compositor that can be used to print the buffer
    /// associated with `view`.
    /// This constructor sets some configuration properties to make the
    /// printed output match `view` as much as possible. The properties set are
    /// [`tab-width`][struct@crate::PrintCompositor#tab-width], [`highlight-syntax`][struct@crate::PrintCompositor#highlight-syntax],
    /// [`wrap-mode`][struct@crate::PrintCompositor#wrap-mode], [`body-font-name`][struct@crate::PrintCompositor#body-font-name] and
    /// [`print-line-numbers`][struct@crate::PrintCompositor#print-line-numbers].
    /// ## `view`
    /// a [`View`][crate::View] to get configuration from.
    ///
    /// # Returns
    ///
    /// a new print compositor object.
    #[doc(alias = "gtk_source_print_compositor_new_from_view")]
    #[doc(alias = "new_from_view")]
    pub fn from_view(view: &impl IsA<View>) -> PrintCompositor {
        skip_assert_initialized!();
        unsafe {
            from_glib_full(ffi::gtk_source_print_compositor_new_from_view(
                view.as_ref().to_glib_none().0,
            ))
        }
    }

    // rustdoc-stripper-ignore-next
    /// Creates a new builder-pattern struct instance to construct [`PrintCompositor`] objects.
    ///
    /// This method returns an instance of [`PrintCompositorBuilder`](crate::builders::PrintCompositorBuilder) which can be used to create [`PrintCompositor`] objects.
    pub fn builder() -> PrintCompositorBuilder {
        PrintCompositorBuilder::new()
    }
}

impl Default for PrintCompositor {
    fn default() -> Self {
        glib::object::Object::new::<Self>()
    }
}

// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`PrintCompositor`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
#[must_use = "The builder must be built to be used"]
pub struct PrintCompositorBuilder {
    builder: glib::object::ObjectBuilder<'static, PrintCompositor>,
}

impl PrintCompositorBuilder {
    fn new() -> Self {
        Self {
            builder: glib::object::Object::builder(),
        }
    }

    /// Name of the font used for the text body.
    ///
    /// Accepted values are strings representing a font description Pango can understand.
    /// (e.g. &quot;Monospace 10&quot;). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn body_font_name(self, body_font_name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self
                .builder
                .property("body-font-name", body_font_name.into()),
        }
    }

    /// The GtkSourceBuffer object to print.
    pub fn buffer(self, buffer: &impl IsA<Buffer>) -> Self {
        Self {
            builder: self.builder.property("buffer", buffer.clone().upcast()),
        }
    }

    /// Name of the font used to print page footer.
    /// If this property is unspecified, the text body font is used.
    ///
    /// Accepted values are strings representing a font description Pango can understand.
    /// (e.g. &quot;Monospace 10&quot;). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn footer_font_name(self, footer_font_name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self
                .builder
                .property("footer-font-name", footer_font_name.into()),
        }
    }

    /// Name of the font used to print page header.
    /// If this property is unspecified, the text body font is used.
    ///
    /// Accepted values are strings representing a font description Pango can understand.
    /// (e.g. &quot;Monospace 10&quot;). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn header_font_name(self, header_font_name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self
                .builder
                .property("header-font-name", header_font_name.into()),
        }
    }

    /// Whether to print the document with highlighted syntax.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn highlight_syntax(self, highlight_syntax: bool) -> Self {
        Self {
            builder: self.builder.property("highlight-syntax", highlight_syntax),
        }
    }

    /// Name of the font used to print line numbers on the left margin.
    /// If this property is unspecified, the text body font is used.
    ///
    /// Accepted values are strings representing a font description Pango can understand.
    /// (e.g. &quot;Monospace 10&quot;). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn line_numbers_font_name(self, line_numbers_font_name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self
                .builder
                .property("line-numbers-font-name", line_numbers_font_name.into()),
        }
    }

    /// Whether to print a footer in each page.
    ///
    /// Note that by default the footer format is unspecified, and if it is
    /// unspecified the footer will not be printed, regardless of the value of
    /// this property.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn print_footer(self, print_footer: bool) -> Self {
        Self {
            builder: self.builder.property("print-footer", print_footer),
        }
    }

    /// Whether to print a header in each page.
    ///
    /// Note that by default the header format is unspecified, and if it is
    /// unspecified the header will not be printed, regardless of the value of
    /// this property.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn print_header(self, print_header: bool) -> Self {
        Self {
            builder: self.builder.property("print-header", print_header),
        }
    }

    /// Interval of printed line numbers. If this property is set to 0 no
    /// numbers will be printed. If greater than 0, a number will be
    /// printed every "print-line-numbers" lines (i.e. 1 will print all line numbers).
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn print_line_numbers(self, print_line_numbers: u32) -> Self {
        Self {
            builder: self
                .builder
                .property("print-line-numbers", print_line_numbers),
        }
    }

    /// Width of a tab character expressed in spaces.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn tab_width(self, tab_width: u32) -> Self {
        Self {
            builder: self.builder.property("tab-width", tab_width),
        }
    }

    /// Whether to wrap lines never, at word boundaries, or at character boundaries.
    ///
    /// The value of this property cannot be changed anymore after the first
    /// call to the [`PrintCompositorExt::paginate()`][crate::prelude::PrintCompositorExt::paginate()] function.
    pub fn wrap_mode(self, wrap_mode: gtk::WrapMode) -> Self {
        Self {
            builder: self.builder.property("wrap-mode", wrap_mode),
        }
    }

    // rustdoc-stripper-ignore-next
    /// Build the [`PrintCompositor`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> PrintCompositor {
        self.builder.build()
    }
}

mod sealed {
    pub trait Sealed {}
    impl<T: super::IsA<super::PrintCompositor>> Sealed for T {}
}

/// Trait containing all [`struct@PrintCompositor`] methods.
///
/// # Implementors
///
/// [`PrintCompositor`][struct@crate::PrintCompositor]
pub trait PrintCompositorExt: IsA<PrintCompositor> + sealed::Sealed + 'static {
    /// Draw page `page_nr` for printing on the the Cairo context encapsuled in `context`.
    ///
    /// This method has been designed to be called in the handler of the `GtkPrintOperation::draw_page` signal
    /// as shown in the following example:
    ///
    /// `<informalexample>``<programlisting>`
    /// // Signal handler for the GtkPrintOperation::draw_page signal
    ///
    /// static void
    /// draw_page (GtkPrintOperation *operation,
    ///  GtkPrintContext *context,
    ///  gint page_nr,
    ///  gpointer user_data)
    /// {
    ///  GtkSourcePrintCompositor *compositor;
    ///
    ///  compositor = GTK_SOURCE_PRINT_COMPOSITOR (user_data);
    ///
    ///  gtk_source_print_compositor_draw_page (compositor,
    ///  context,
    ///  page_nr);
    /// }
    /// `</programlisting>``</informalexample>`
    /// ## `context`
    /// the [`gtk::PrintContext`][crate::gtk::PrintContext] encapsulating the context information that is required when
    ///  drawing the page for printing.
    /// ## `page_nr`
    /// the number of the page to print.
    #[doc(alias = "gtk_source_print_compositor_draw_page")]
    fn draw_page(&self, context: &gtk::PrintContext, page_nr: i32) {
        unsafe {
            ffi::gtk_source_print_compositor_draw_page(
                self.as_ref().to_glib_none().0,
                context.to_glib_none().0,
                page_nr,
            );
        }
    }

    /// Returns the name of the font used to print the text body. The returned string
    /// must be freed with `g_free()`.
    ///
    /// # Returns
    ///
    /// a new string containing the name of the font used to print the
    /// text body.
    #[doc(alias = "gtk_source_print_compositor_get_body_font_name")]
    #[doc(alias = "get_body_font_name")]
    fn body_font_name(&self) -> Option<glib::GString> {
        unsafe {
            from_glib_full(ffi::gtk_source_print_compositor_get_body_font_name(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the bottom margin in units of `unit`.
    /// ## `unit`
    /// the unit for the return value.
    ///
    /// # Returns
    ///
    /// the bottom margin.
    #[doc(alias = "gtk_source_print_compositor_get_bottom_margin")]
    #[doc(alias = "get_bottom_margin")]
    fn bottom_margin(&self, unit: gtk::Unit) -> f64 {
        unsafe {
            ffi::gtk_source_print_compositor_get_bottom_margin(
                self.as_ref().to_glib_none().0,
                unit.into_glib(),
            )
        }
    }

    /// Gets the [`Buffer`][crate::Buffer] associated with the compositor. The returned
    /// object reference is owned by the compositor object and
    /// should not be unreferenced.
    ///
    /// # Returns
    ///
    /// the [`Buffer`][crate::Buffer] associated with the compositor.
    #[doc(alias = "gtk_source_print_compositor_get_buffer")]
    #[doc(alias = "get_buffer")]
    fn buffer(&self) -> Option<Buffer> {
        unsafe {
            from_glib_none(ffi::gtk_source_print_compositor_get_buffer(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the name of the font used to print the page footer.
    /// The returned string must be freed with `g_free()`.
    ///
    /// # Returns
    ///
    /// a new string containing the name of the font used to print
    /// the page footer.
    #[doc(alias = "gtk_source_print_compositor_get_footer_font_name")]
    #[doc(alias = "get_footer_font_name")]
    fn footer_font_name(&self) -> Option<glib::GString> {
        unsafe {
            from_glib_full(ffi::gtk_source_print_compositor_get_footer_font_name(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the name of the font used to print the page header.
    /// The returned string must be freed with `g_free()`.
    ///
    /// # Returns
    ///
    /// a new string containing the name of the font used to print
    /// the page header.
    #[doc(alias = "gtk_source_print_compositor_get_header_font_name")]
    #[doc(alias = "get_header_font_name")]
    fn header_font_name(&self) -> Option<glib::GString> {
        unsafe {
            from_glib_full(ffi::gtk_source_print_compositor_get_header_font_name(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Determines whether the printed text will be highlighted according to the
    /// buffer rules. Note that highlighting will happen
    /// only if the buffer to print has highlighting activated.
    ///
    /// # Returns
    ///
    /// [`true`] if the printed output will be highlighted.
    #[doc(alias = "gtk_source_print_compositor_get_highlight_syntax")]
    #[doc(alias = "get_highlight_syntax")]
    fn is_highlight_syntax(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_source_print_compositor_get_highlight_syntax(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the left margin in units of `unit`.
    /// ## `unit`
    /// the unit for the return value.
    ///
    /// # Returns
    ///
    /// the left margin
    #[doc(alias = "gtk_source_print_compositor_get_left_margin")]
    #[doc(alias = "get_left_margin")]
    fn left_margin(&self, unit: gtk::Unit) -> f64 {
        unsafe {
            ffi::gtk_source_print_compositor_get_left_margin(
                self.as_ref().to_glib_none().0,
                unit.into_glib(),
            )
        }
    }

    /// Returns the name of the font used to print line numbers on the left margin.
    /// The returned string must be freed with `g_free()`.
    ///
    /// # Returns
    ///
    /// a new string containing the name of the font used to print
    /// line numbers on the left margin.
    #[doc(alias = "gtk_source_print_compositor_get_line_numbers_font_name")]
    #[doc(alias = "get_line_numbers_font_name")]
    fn line_numbers_font_name(&self) -> Option<glib::GString> {
        unsafe {
            from_glib_full(ffi::gtk_source_print_compositor_get_line_numbers_font_name(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the number of pages in the document or `<code>`-1`</code>` if the
    /// document has not been completely paginated.
    ///
    /// # Returns
    ///
    /// the number of pages in the document or `<code>`-1`</code>` if the
    /// document has not been completely paginated.
    #[doc(alias = "gtk_source_print_compositor_get_n_pages")]
    #[doc(alias = "get_n_pages")]
    fn n_pages(&self) -> i32 {
        unsafe { ffi::gtk_source_print_compositor_get_n_pages(self.as_ref().to_glib_none().0) }
    }

    /// Returns the current fraction of the document pagination that has been completed.
    ///
    /// # Returns
    ///
    /// a fraction from 0.0 to 1.0 inclusive.
    #[doc(alias = "gtk_source_print_compositor_get_pagination_progress")]
    #[doc(alias = "get_pagination_progress")]
    fn pagination_progress(&self) -> f64 {
        unsafe {
            ffi::gtk_source_print_compositor_get_pagination_progress(self.as_ref().to_glib_none().0)
        }
    }

    /// Determines if a footer is set to be printed for each page. A
    /// footer will be printed if this function returns [`true`]
    /// `<emphasis>`and`</emphasis>` some format strings have been specified
    /// with [`set_footer_format()`][Self::set_footer_format()].
    ///
    /// # Returns
    ///
    /// [`true`] if the footer is set to be printed.
    #[doc(alias = "gtk_source_print_compositor_get_print_footer")]
    #[doc(alias = "get_print_footer")]
    fn is_print_footer(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_source_print_compositor_get_print_footer(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Determines if a header is set to be printed for each page. A
    /// header will be printed if this function returns [`true`]
    /// `<emphasis>`and`</emphasis>` some format strings have been specified
    /// with [`set_header_format()`][Self::set_header_format()].
    ///
    /// # Returns
    ///
    /// [`true`] if the header is set to be printed.
    #[doc(alias = "gtk_source_print_compositor_get_print_header")]
    #[doc(alias = "get_print_header")]
    fn is_print_header(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_source_print_compositor_get_print_header(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the interval used for line number printing. If the
    /// value is 0, no line numbers will be printed. The default value is
    /// 1 (i.e. numbers printed in all lines).
    ///
    /// # Returns
    ///
    /// the interval of printed line numbers.
    #[doc(alias = "gtk_source_print_compositor_get_print_line_numbers")]
    #[doc(alias = "get_print_line_numbers")]
    fn print_line_numbers(&self) -> u32 {
        unsafe {
            ffi::gtk_source_print_compositor_get_print_line_numbers(self.as_ref().to_glib_none().0)
        }
    }

    /// Gets the right margin in units of `unit`.
    /// ## `unit`
    /// the unit for the return value.
    ///
    /// # Returns
    ///
    /// the right margin.
    #[doc(alias = "gtk_source_print_compositor_get_right_margin")]
    #[doc(alias = "get_right_margin")]
    fn right_margin(&self, unit: gtk::Unit) -> f64 {
        unsafe {
            ffi::gtk_source_print_compositor_get_right_margin(
                self.as_ref().to_glib_none().0,
                unit.into_glib(),
            )
        }
    }

    /// Returns the width of tabulation in characters for printed text.
    ///
    /// # Returns
    ///
    /// width of tab.
    #[doc(alias = "gtk_source_print_compositor_get_tab_width")]
    #[doc(alias = "get_tab_width")]
    fn tab_width(&self) -> u32 {
        unsafe { ffi::gtk_source_print_compositor_get_tab_width(self.as_ref().to_glib_none().0) }
    }

    /// Gets the top margin in units of `unit`.
    /// ## `unit`
    /// the unit for the return value.
    ///
    /// # Returns
    ///
    /// the top margin.
    #[doc(alias = "gtk_source_print_compositor_get_top_margin")]
    #[doc(alias = "get_top_margin")]
    fn top_margin(&self, unit: gtk::Unit) -> f64 {
        unsafe {
            ffi::gtk_source_print_compositor_get_top_margin(
                self.as_ref().to_glib_none().0,
                unit.into_glib(),
            )
        }
    }

    /// Gets the line wrapping mode for the printed text.
    ///
    /// # Returns
    ///
    /// the line wrap mode.
    #[doc(alias = "gtk_source_print_compositor_get_wrap_mode")]
    #[doc(alias = "get_wrap_mode")]
    fn wrap_mode(&self) -> gtk::WrapMode {
        unsafe {
            from_glib(ffi::gtk_source_print_compositor_get_wrap_mode(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Paginate the document associated with the `self`.
    ///
    /// In order to support non-blocking pagination, document is paginated in small chunks.
    /// Each time [`paginate()`][Self::paginate()] is invoked, a chunk of the document
    /// is paginated. To paginate the entire document, [`paginate()`][Self::paginate()]
    /// must be invoked multiple times.
    /// It returns [`true`] if the document has been completely paginated, otherwise it returns [`false`].
    ///
    /// This method has been designed to be invoked in the handler of the `GtkPrintOperation::paginate` signal,
    /// as shown in the following example:
    ///
    /// `<informalexample>``<programlisting>`
    /// // Signal handler for the GtkPrintOperation::paginate signal
    ///
    /// static gboolean
    /// paginate (GtkPrintOperation *operation,
    ///  GtkPrintContext *context,
    ///  gpointer user_data)
    /// {
    ///  GtkSourcePrintCompositor *compositor;
    ///
    ///  compositor = GTK_SOURCE_PRINT_COMPOSITOR (user_data);
    ///
    ///  if (gtk_source_print_compositor_paginate (compositor, context))
    ///  {
    ///  gint n_pages;
    ///
    ///  n_pages = gtk_source_print_compositor_get_n_pages (compositor);
    ///  gtk_print_operation_set_n_pages (operation, n_pages);
    ///
    ///  return TRUE;
    ///  }
    ///
    ///  return FALSE;
    /// }
    /// `</programlisting>``</informalexample>`
    ///
    /// If you don't need to do pagination in chunks, you can simply do it all in the
    /// `GtkPrintOperation::begin-print` handler, and set the number of pages from there, like
    /// in the following example:
    ///
    /// `<informalexample>``<programlisting>`
    /// // Signal handler for the GtkPrintOperation::begin-print signal
    ///
    /// static void
    /// begin_print (GtkPrintOperation *operation,
    ///  GtkPrintContext *context,
    ///  gpointer user_data)
    /// {
    ///  GtkSourcePrintCompositor *compositor;
    ///  gint n_pages;
    ///
    ///  compositor = GTK_SOURCE_PRINT_COMPOSITOR (user_data);
    ///
    ///  while (!gtk_source_print_compositor_paginate (compositor, context));
    ///
    ///  n_pages = gtk_source_print_compositor_get_n_pages (compositor);
    ///  gtk_print_operation_set_n_pages (operation, n_pages);
    /// }
    /// `</programlisting>``</informalexample>`
    /// ## `context`
    /// the [`gtk::PrintContext`][crate::gtk::PrintContext] whose parameters (e.g. paper size, print margins, etc.)
    /// are used by the the `self` to paginate the document.
    ///
    /// # Returns
    ///
    /// [`true`] if the document has been completely paginated, [`false`] otherwise.
    #[doc(alias = "gtk_source_print_compositor_paginate")]
    fn paginate(&self, context: &gtk::PrintContext) -> bool {
        unsafe {
            from_glib(ffi::gtk_source_print_compositor_paginate(
                self.as_ref().to_glib_none().0,
                context.to_glib_none().0,
            ))
        }
    }

    /// Sets the default font for the printed text.
    ///
    /// `font_name` should be a
    /// string representation of a font description Pango can understand.
    /// (e.g. &quot;Monospace 10&quot;). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `font_name`
    /// the name of the default font for the body text.
    #[doc(alias = "gtk_source_print_compositor_set_body_font_name")]
    fn set_body_font_name(&self, font_name: &str) {
        unsafe {
            ffi::gtk_source_print_compositor_set_body_font_name(
                self.as_ref().to_glib_none().0,
                font_name.to_glib_none().0,
            );
        }
    }

    /// Sets the bottom margin used by `self`.
    /// ## `margin`
    /// the new bottom margin in units of `unit`.
    /// ## `unit`
    /// the units for `margin`.
    #[doc(alias = "gtk_source_print_compositor_set_bottom_margin")]
    fn set_bottom_margin(&self, margin: f64, unit: gtk::Unit) {
        unsafe {
            ffi::gtk_source_print_compositor_set_bottom_margin(
                self.as_ref().to_glib_none().0,
                margin,
                unit.into_glib(),
            );
        }
    }

    /// Sets the font for printing the page footer. If
    /// [`None`] is supplied, the default font (i.e. the one being used for the
    /// text) will be used instead.
    ///
    /// `font_name` should be a
    /// string representation of a font description Pango can understand.
    /// (e.g. &quot;Monospace 10&quot;). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `font_name`
    /// the name of the font for the footer text, or [`None`].
    #[doc(alias = "gtk_source_print_compositor_set_footer_font_name")]
    fn set_footer_font_name(&self, font_name: Option<&str>) {
        unsafe {
            ffi::gtk_source_print_compositor_set_footer_font_name(
                self.as_ref().to_glib_none().0,
                font_name.to_glib_none().0,
            );
        }
    }

    /// See [`set_header_format()`][Self::set_header_format()] for more information
    /// about the parameters.
    /// ## `separator`
    /// [`true`] if you want a separator line to be printed.
    /// ## `left`
    /// a format string to print on the left of the footer.
    /// ## `center`
    /// a format string to print on the center of the footer.
    /// ## `right`
    /// a format string to print on the right of the footer.
    #[doc(alias = "gtk_source_print_compositor_set_footer_format")]
    fn set_footer_format(
        &self,
        separator: bool,
        left: Option<&str>,
        center: Option<&str>,
        right: Option<&str>,
    ) {
        unsafe {
            ffi::gtk_source_print_compositor_set_footer_format(
                self.as_ref().to_glib_none().0,
                separator.into_glib(),
                left.to_glib_none().0,
                center.to_glib_none().0,
                right.to_glib_none().0,
            );
        }
    }

    /// Sets the font for printing the page header. If
    /// [`None`] is supplied, the default font (i.e. the one being used for the
    /// text) will be used instead.
    ///
    /// `font_name` should be a
    /// string representation of a font description Pango can understand.
    /// (e.g. &quot;Monospace 10&quot;). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `font_name`
    /// the name of the font for header text, or [`None`].
    #[doc(alias = "gtk_source_print_compositor_set_header_font_name")]
    fn set_header_font_name(&self, font_name: Option<&str>) {
        unsafe {
            ffi::gtk_source_print_compositor_set_header_font_name(
                self.as_ref().to_glib_none().0,
                font_name.to_glib_none().0,
            );
        }
    }

    /// Sets strftime like header format strings, to be printed on the
    /// left, center and right of the top of each page. The strings may
    /// include strftime(3) codes which will be expanded at print time.
    /// A subset of `strftime()` codes are accepted, see `g_date_time_format()`
    /// for more details on the accepted format specifiers.
    /// Additionally the following format specifiers are accepted:
    /// - `N`: the page number
    /// - `Q`: the page count.
    ///
    /// `separator` specifies if a solid line should be drawn to separate
    /// the header from the document text.
    ///
    /// If [`None`] is given for any of the three arguments, that particular
    /// string will not be printed.
    ///
    /// For the header to be printed, in
    /// addition to specifying format strings, you need to enable header
    /// printing with [`set_print_header()`][Self::set_print_header()].
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `separator`
    /// [`true`] if you want a separator line to be printed.
    /// ## `left`
    /// a format string to print on the left of the header.
    /// ## `center`
    /// a format string to print on the center of the header.
    /// ## `right`
    /// a format string to print on the right of the header.
    #[doc(alias = "gtk_source_print_compositor_set_header_format")]
    fn set_header_format(
        &self,
        separator: bool,
        left: Option<&str>,
        center: Option<&str>,
        right: Option<&str>,
    ) {
        unsafe {
            ffi::gtk_source_print_compositor_set_header_format(
                self.as_ref().to_glib_none().0,
                separator.into_glib(),
                left.to_glib_none().0,
                center.to_glib_none().0,
                right.to_glib_none().0,
            );
        }
    }

    /// Sets whether the printed text will be highlighted according to the
    /// buffer rules. Both color and font style are applied.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `highlight`
    /// whether syntax should be highlighted.
    #[doc(alias = "gtk_source_print_compositor_set_highlight_syntax")]
    fn set_highlight_syntax(&self, highlight: bool) {
        unsafe {
            ffi::gtk_source_print_compositor_set_highlight_syntax(
                self.as_ref().to_glib_none().0,
                highlight.into_glib(),
            );
        }
    }

    /// Sets the left margin used by `self`.
    /// ## `margin`
    /// the new left margin in units of `unit`.
    /// ## `unit`
    /// the units for `margin`.
    #[doc(alias = "gtk_source_print_compositor_set_left_margin")]
    fn set_left_margin(&self, margin: f64, unit: gtk::Unit) {
        unsafe {
            ffi::gtk_source_print_compositor_set_left_margin(
                self.as_ref().to_glib_none().0,
                margin,
                unit.into_glib(),
            );
        }
    }

    /// Sets the font for printing line numbers on the left margin. If
    /// [`None`] is supplied, the default font (i.e. the one being used for the
    /// text) will be used instead.
    ///
    /// `font_name` should be a
    /// string representation of a font description Pango can understand.
    /// (e.g. &quot;Monospace 10&quot;). See [`pango::FontDescription::from_string()`][crate::pango::FontDescription::from_string()]
    /// for a description of the format of the string representation.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `font_name`
    /// the name of the font for line numbers, or [`None`].
    #[doc(alias = "gtk_source_print_compositor_set_line_numbers_font_name")]
    fn set_line_numbers_font_name(&self, font_name: Option<&str>) {
        unsafe {
            ffi::gtk_source_print_compositor_set_line_numbers_font_name(
                self.as_ref().to_glib_none().0,
                font_name.to_glib_none().0,
            );
        }
    }

    /// Sets whether you want to print a footer in each page. The
    /// footer consists of three pieces of text and an optional line
    /// separator, configurable with
    /// [`set_footer_format()`][Self::set_footer_format()].
    ///
    /// Note that by default the footer format is unspecified, and if it's
    /// empty it will not be printed, regardless of this setting.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `print`
    /// [`true`] if you want the footer to be printed.
    #[doc(alias = "gtk_source_print_compositor_set_print_footer")]
    fn set_print_footer(&self, print: bool) {
        unsafe {
            ffi::gtk_source_print_compositor_set_print_footer(
                self.as_ref().to_glib_none().0,
                print.into_glib(),
            );
        }
    }

    /// Sets whether you want to print a header in each page. The
    /// header consists of three pieces of text and an optional line
    /// separator, configurable with
    /// [`set_header_format()`][Self::set_header_format()].
    ///
    /// Note that by default the header format is unspecified, and if it's
    /// empty it will not be printed, regardless of this setting.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `print`
    /// [`true`] if you want the header to be printed.
    #[doc(alias = "gtk_source_print_compositor_set_print_header")]
    fn set_print_header(&self, print: bool) {
        unsafe {
            ffi::gtk_source_print_compositor_set_print_header(
                self.as_ref().to_glib_none().0,
                print.into_glib(),
            );
        }
    }

    /// Sets the interval for printed line numbers. If `interval` is 0 no
    /// numbers will be printed. If greater than 0, a number will be
    /// printed every `interval` lines (i.e. 1 will print all line numbers).
    ///
    /// Maximum accepted value for `interval` is 100.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `interval`
    /// interval for printed line numbers.
    #[doc(alias = "gtk_source_print_compositor_set_print_line_numbers")]
    fn set_print_line_numbers(&self, interval: u32) {
        unsafe {
            ffi::gtk_source_print_compositor_set_print_line_numbers(
                self.as_ref().to_glib_none().0,
                interval,
            );
        }
    }

    /// Sets the right margin used by `self`.
    /// ## `margin`
    /// the new right margin in units of `unit`.
    /// ## `unit`
    /// the units for `margin`.
    #[doc(alias = "gtk_source_print_compositor_set_right_margin")]
    fn set_right_margin(&self, margin: f64, unit: gtk::Unit) {
        unsafe {
            ffi::gtk_source_print_compositor_set_right_margin(
                self.as_ref().to_glib_none().0,
                margin,
                unit.into_glib(),
            );
        }
    }

    /// Sets the width of tabulation in characters for printed text.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `width`
    /// width of tab in characters.
    #[doc(alias = "gtk_source_print_compositor_set_tab_width")]
    fn set_tab_width(&self, width: u32) {
        unsafe {
            ffi::gtk_source_print_compositor_set_tab_width(self.as_ref().to_glib_none().0, width);
        }
    }

    /// Sets the top margin used by `self`.
    /// ## `margin`
    /// the new top margin in units of `unit`
    /// ## `unit`
    /// the units for `margin`
    #[doc(alias = "gtk_source_print_compositor_set_top_margin")]
    fn set_top_margin(&self, margin: f64, unit: gtk::Unit) {
        unsafe {
            ffi::gtk_source_print_compositor_set_top_margin(
                self.as_ref().to_glib_none().0,
                margin,
                unit.into_glib(),
            );
        }
    }

    /// Sets the line wrapping mode for the printed text.
    ///
    /// This function cannot be called anymore after the first call to the
    /// [`paginate()`][Self::paginate()] function.
    /// ## `wrap_mode`
    /// a [`gtk::WrapMode`][crate::gtk::WrapMode].
    #[doc(alias = "gtk_source_print_compositor_set_wrap_mode")]
    fn set_wrap_mode(&self, wrap_mode: gtk::WrapMode) {
        unsafe {
            ffi::gtk_source_print_compositor_set_wrap_mode(
                self.as_ref().to_glib_none().0,
                wrap_mode.into_glib(),
            );
        }
    }

    #[doc(alias = "body-font-name")]
    fn connect_body_font_name_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_body_font_name_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::body-font-name\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_body_font_name_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "footer-font-name")]
    fn connect_footer_font_name_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_footer_font_name_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::footer-font-name\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_footer_font_name_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "header-font-name")]
    fn connect_header_font_name_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_header_font_name_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::header-font-name\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_header_font_name_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "highlight-syntax")]
    fn connect_highlight_syntax_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_highlight_syntax_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::highlight-syntax\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_highlight_syntax_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "line-numbers-font-name")]
    fn connect_line_numbers_font_name_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_line_numbers_font_name_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::line-numbers-font-name\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_line_numbers_font_name_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "n-pages")]
    fn connect_n_pages_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_n_pages_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::n-pages\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_n_pages_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "print-footer")]
    fn connect_print_footer_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_print_footer_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::print-footer\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_print_footer_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "print-header")]
    fn connect_print_header_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_print_header_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::print-header\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_print_header_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "print-line-numbers")]
    fn connect_print_line_numbers_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_print_line_numbers_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::print-line-numbers\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_print_line_numbers_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "tab-width")]
    fn connect_tab_width_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_tab_width_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::tab-width\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_tab_width_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "wrap-mode")]
    fn connect_wrap_mode_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_wrap_mode_trampoline<
            P: IsA<PrintCompositor>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkSourcePrintCompositor,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(PrintCompositor::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::wrap-mode\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_wrap_mode_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl<O: IsA<PrintCompositor>> PrintCompositorExt for O {}

impl fmt::Display for PrintCompositor {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("PrintCompositor")
    }
}