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  1. module GI.Gtk.Interfaces.PrintOperationPreview

    GtkPrintOperationPreview is the interface that is used to implement print preview. A GtkPrintOperationPreview object is passed to the PrintOperation::preview signal by PrintOperation.

  2. newtype PrintOperationPreview

    gi-gtk4 GI.Gtk.Interfaces.PrintOperationPreview

    Memory-managed wrapper type.

  3. PrintOperationPreview :: ManagedPtr PrintOperationPreview -> PrintOperationPreview

    gi-gtk4 GI.Gtk.Interfaces.PrintOperationPreview

    No documentation available.

  4. type PrintOperationPreviewGotPageSizeCallback = PrintContext -> PageSetup -> IO ()

    gi-gtk4 GI.Gtk.Interfaces.PrintOperationPreview

    Emitted once for each page that gets rendered to the preview. A handler for this signal should update the context according to pageSetup and set up a suitable cairo context, using printContextSetCairoContext.

  5. type PrintOperationPreviewReadyCallback = PrintContext -> IO ()

    gi-gtk4 GI.Gtk.Interfaces.PrintOperationPreview

    The ready signal gets emitted once per preview operation, before the first page is rendered. A handler for this signal can be used for setup tasks.

  6. module GI.Gtk.Objects.PrintContext

    A GtkPrintContext encapsulates context information that is required when drawing pages for printing. This includes the cairo context and important parameters like page size and resolution. It also lets you easily create Layout and Context objects that match the font metrics of the cairo surface. GtkPrintContext objects get passed to the PrintOperation::beginPrint, PrintOperation::endPrint, PrintOperation::requestPageSetup and PrintOperation::drawPage signals on the PrintOperation object.

    Using GtkPrintContext in a drawPage callback

    c code

    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);
}

  7. newtype PrintContext

    gi-gtk4 GI.Gtk.Objects.PrintContext

    Memory-managed wrapper type.

  8. PrintContext :: ManagedPtr PrintContext -> PrintContext

    gi-gtk4 GI.Gtk.Objects.PrintContext

    No documentation available.

  9. module GI.Gtk.Objects.PrintDialog

    A GtkPrintDialog object collects the arguments that are needed to present a print dialog to the user, such as a title for the dialog and whether it should be modal. The dialog is shown with the printDialogSetup function. The actual printing can be done with printDialogPrint or printDialogPrintFile. These APIs follows the GIO async pattern, and the results can be obtained by calling the corresponding finish methods. Since: 4.14

  10. newtype PrintDialog

    gi-gtk4 GI.Gtk.Objects.PrintDialog

    Memory-managed wrapper type.

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