Gtk.PrintContext

const Gtk = imports.gi.Gtk;

let print_context = new Gtk.PrintContext();
  

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 and Pango.Context objects that match the font metrics of the cairo surface.

GtkPrintContext objects gets passed to the Gtk.begin-print, Gtk.end-print, Gtk.request-page-setup and Gtk.draw-page signals on the Gtk.PrintOperation.

<example> <title>Using GtkPrintContext in a Gtk.draw-page callback</title> <programlisting> 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_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); } </programlisting> </example>

Printing support was added in GTK+ 2.10.