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// This file was generated by gir (https://github.com/gtk-rs/gir) // from gir-files (https://github.com/gtk-rs/gir-files) // DO NOT EDIT use crate::PageSetup; use glib::translate::*; use std::fmt; use std::mem; glib::wrapper! { /// A GtkPrintContext encapsulates context information that is required when /// drawing pages for printing, such as the cairo context and important /// parameters like page size and resolution. It also lets you easily /// create [`pango::Layout`][crate::pango::Layout] and [`pango::Context`][crate::pango::Context] objects that match the font metrics /// of the cairo surface. /// /// GtkPrintContext objects gets passed to the `signal::PrintOperation::begin-print`, /// `signal::PrintOperation::end-print`, `signal::PrintOperation::request-page-setup` and /// `signal::PrintOperation::draw-page` signals on the [`PrintOperation`][crate::PrintOperation]. /// /// ## Using GtkPrintContext in a `signal::PrintOperation::draw-page` callback /// /// /// /// **⚠️ The following code is in C ⚠️** /// /// ```C /// static void /// draw_page (GtkPrintOperation *operation, /// GtkPrintContext *context, /// int page_nr) /// { /// cairo_t *cr; /// PangoLayout *layout; /// PangoFontDescription *desc; /// /// cr = gtk_print_context_get_cairo_context (context); /// /// // Draw a red rectangle, as wide as the paper (inside the margins) /// cairo_set_source_rgb (cr, 1.0, 0, 0); /// cairo_rectangle (cr, 0, 0, gtk_print_context_get_width (context), 50); /// /// cairo_fill (cr); /// /// // Draw some lines /// cairo_move_to (cr, 20, 10); /// cairo_line_to (cr, 40, 20); /// cairo_arc (cr, 60, 60, 20, 0, M_PI); /// cairo_line_to (cr, 80, 20); /// /// cairo_set_source_rgb (cr, 0, 0, 0); /// cairo_set_line_width (cr, 5); /// cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); /// cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND); /// /// cairo_stroke (cr); /// /// // Draw some text /// layout = gtk_print_context_create_pango_layout (context); /// pango_layout_set_text (layout, "Hello World! Printing is easy", -1); /// desc = pango_font_description_from_string ("sans 28"); /// pango_layout_set_font_description (layout, desc); /// pango_font_description_free (desc); /// /// cairo_move_to (cr, 30, 20); /// pango_cairo_layout_path (cr, layout); /// /// // Font Outline /// cairo_set_source_rgb (cr, 0.93, 1.0, 0.47); /// cairo_set_line_width (cr, 0.5); /// cairo_stroke_preserve (cr); /// /// // Font Fill /// cairo_set_source_rgb (cr, 0, 0.0, 1.0); /// cairo_fill (cr); /// /// g_object_unref (layout); /// } /// ``` /// /// Printing support was added in GTK+ 2.10. /// /// # Implements /// /// [`trait@glib::ObjectExt`] #[doc(alias = "GtkPrintContext")] pub struct PrintContext(Object<ffi::GtkPrintContext>); match fn { type_ => || ffi::gtk_print_context_get_type(), } } impl PrintContext { /// Creates a new [`pango::Context`][crate::pango::Context] that can be used with the /// [`PrintContext`][crate::PrintContext]. /// /// # Returns /// /// a new Pango context for `self` #[doc(alias = "gtk_print_context_create_pango_context")] pub fn create_pango_context(&self) -> Option<pango::Context> { unsafe { from_glib_full(ffi::gtk_print_context_create_pango_context( self.to_glib_none().0, )) } } /// Creates a new [`pango::Layout`][crate::pango::Layout] that is suitable for use /// with the [`PrintContext`][crate::PrintContext]. /// /// # Returns /// /// a new Pango layout for `self` #[doc(alias = "gtk_print_context_create_pango_layout")] pub fn create_pango_layout(&self) -> Option<pango::Layout> { unsafe { from_glib_full(ffi::gtk_print_context_create_pango_layout( self.to_glib_none().0, )) } } /// Obtains the cairo context that is associated with the /// [`PrintContext`][crate::PrintContext]. /// /// # Returns /// /// the cairo context of `self` #[doc(alias = "gtk_print_context_get_cairo_context")] #[doc(alias = "get_cairo_context")] pub fn cairo_context(&self) -> Option<cairo::Context> { unsafe { from_glib_none(ffi::gtk_print_context_get_cairo_context( self.to_glib_none().0, )) } } /// Obtains the horizontal resolution of the [`PrintContext`][crate::PrintContext], /// in dots per inch. /// /// # Returns /// /// the horizontal resolution of `self` #[doc(alias = "gtk_print_context_get_dpi_x")] #[doc(alias = "get_dpi_x")] pub fn dpi_x(&self) -> f64 { unsafe { ffi::gtk_print_context_get_dpi_x(self.to_glib_none().0) } } /// Obtains the vertical resolution of the [`PrintContext`][crate::PrintContext], /// in dots per inch. /// /// # Returns /// /// the vertical resolution of `self` #[doc(alias = "gtk_print_context_get_dpi_y")] #[doc(alias = "get_dpi_y")] pub fn dpi_y(&self) -> f64 { unsafe { ffi::gtk_print_context_get_dpi_y(self.to_glib_none().0) } } /// Obtains the hardware printer margins of the [`PrintContext`][crate::PrintContext], in units. /// /// # Returns /// /// [`true`] if the hard margins were retrieved /// /// ## `top` /// top hardware printer margin /// /// ## `bottom` /// bottom hardware printer margin /// /// ## `left` /// left hardware printer margin /// /// ## `right` /// right hardware printer margin #[doc(alias = "gtk_print_context_get_hard_margins")] #[doc(alias = "get_hard_margins")] pub fn hard_margins(&self) -> Option<(f64, f64, f64, f64)> { unsafe { let mut top = mem::MaybeUninit::uninit(); let mut bottom = mem::MaybeUninit::uninit(); let mut left = mem::MaybeUninit::uninit(); let mut right = mem::MaybeUninit::uninit(); let ret = from_glib(ffi::gtk_print_context_get_hard_margins( self.to_glib_none().0, top.as_mut_ptr(), bottom.as_mut_ptr(), left.as_mut_ptr(), right.as_mut_ptr(), )); let top = top.assume_init(); let bottom = bottom.assume_init(); let left = left.assume_init(); let right = right.assume_init(); if ret { Some((top, bottom, left, right)) } else { None } } } /// Obtains the height of the [`PrintContext`][crate::PrintContext], in pixels. /// /// # Returns /// /// the height of `self` #[doc(alias = "gtk_print_context_get_height")] #[doc(alias = "get_height")] pub fn height(&self) -> f64 { unsafe { ffi::gtk_print_context_get_height(self.to_glib_none().0) } } /// Obtains the [`PageSetup`][crate::PageSetup] that determines the page /// dimensions of the [`PrintContext`][crate::PrintContext]. /// /// # Returns /// /// the page setup of `self` #[doc(alias = "gtk_print_context_get_page_setup")] #[doc(alias = "get_page_setup")] pub fn page_setup(&self) -> Option<PageSetup> { unsafe { from_glib_none(ffi::gtk_print_context_get_page_setup(self.to_glib_none().0)) } } /// Returns a [`pango::FontMap`][crate::pango::FontMap] that is suitable for use /// with the [`PrintContext`][crate::PrintContext]. /// /// # Returns /// /// the font map of `self` #[doc(alias = "gtk_print_context_get_pango_fontmap")] #[doc(alias = "get_pango_fontmap")] pub fn pango_fontmap(&self) -> Option<pango::FontMap> { unsafe { from_glib_none(ffi::gtk_print_context_get_pango_fontmap( self.to_glib_none().0, )) } } /// Obtains the width of the [`PrintContext`][crate::PrintContext], in pixels. /// /// # Returns /// /// the width of `self` #[doc(alias = "gtk_print_context_get_width")] #[doc(alias = "get_width")] pub fn width(&self) -> f64 { unsafe { ffi::gtk_print_context_get_width(self.to_glib_none().0) } } /// Sets a new cairo context on a print context. /// /// This function is intended to be used when implementing /// an internal print preview, it is not needed for printing, /// since GTK+ itself creates a suitable cairo context in that /// case. /// ## `cr` /// the cairo context /// ## `dpi_x` /// the horizontal resolution to use with `cr` /// ## `dpi_y` /// the vertical resolution to use with `cr` #[doc(alias = "gtk_print_context_set_cairo_context")] pub fn set_cairo_context(&self, cr: &cairo::Context, dpi_x: f64, dpi_y: f64) { unsafe { ffi::gtk_print_context_set_cairo_context( self.to_glib_none().0, mut_override(cr.to_glib_none().0), dpi_x, dpi_y, ); } } } impl fmt::Display for PrintContext { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { f.write_str("PrintContext") } }