diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ld-window-main.c | 94 |
1 files changed, 89 insertions, 5 deletions
diff --git a/src/ld-window-main.c b/src/ld-window-main.c index c68ff3d..6616168 100644 --- a/src/ld-window-main.c +++ b/src/ld-window-main.c @@ -106,6 +106,9 @@ static void on_action_new (GtkAction *action, LdWindowMain *self); static void on_action_open (GtkAction *action, LdWindowMain *self); static void on_action_save (GtkAction *action, LdWindowMain *self); static void on_action_save_as (GtkAction *action, LdWindowMain *self); +static void on_action_print (GtkAction *action, LdWindowMain *self); +static void on_action_print_draw_page (GtkPrintOperation *operation, + GtkPrintContext *context, int page_nr, LdWindowMain *self); static void on_action_quit (GtkAction *action, LdWindowMain *self); static void on_action_user_guide (GtkAction *action, LdWindowMain *self); static void on_action_about (GtkAction *action, LdWindowMain *self); @@ -146,11 +149,11 @@ static GtkActionEntry wm_action_entries[] = {"SaveAs", GTK_STOCK_SAVE_AS, N_("Save _As..."), "<Shift><Ctrl>S", N_("Save the current diagram with another name"), G_CALLBACK (on_action_save_as)}, -/* - * {"Export", NULL, N_("_Export"), NULL, - * N_("Export the diagram"), - * NULL}, - */ + + {"Print", GTK_STOCK_PRINT, N_("_Print"), "<Ctrl>P", + N_("Print the diagram"), + G_CALLBACK (on_action_print)}, + {"Quit", GTK_STOCK_QUIT, N_("_Quit"), "<Ctrl>Q", N_("Quit the application"), G_CALLBACK (on_action_quit)}, @@ -995,6 +998,87 @@ on_action_save_as (GtkAction *action, LdWindowMain *self) } static void +on_action_print (GtkAction *action, LdWindowMain *self) +{ + static GtkPrintSettings *settings = NULL; + GError *error = NULL; + GtkPrintOperation *print; + GtkPrintOperationResult res; + gchar *name; + + print = gtk_print_operation_new (); + gtk_print_operation_set_n_pages (print, 1); + gtk_print_operation_set_embed_page_setup (print, TRUE); + gtk_print_operation_set_unit (print, GTK_UNIT_MM); + + name = diagram_get_name (self); + gtk_print_operation_set_job_name (print, name); + g_free (name); + + if (settings != NULL) + gtk_print_operation_set_print_settings (print, settings); + g_signal_connect (print, "draw-page", + G_CALLBACK (on_action_print_draw_page), self); + + /* On Windows, it is not possible to get a print preview from the system + * print dialog. But in Windows XP previews do not work at all--unreadable + * EMFs come out. Windows 10 errors out with "A sharing violation occurred + * while accessing" the temporary EMF file on our first run of + * GtkPrintOperation, and following that it opens the previews up in + * fucking Paint, so there is no point in trying. It lacks a stage + * or controls for setting up page parameters anyway. + */ + res = gtk_print_operation_run (print, + GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG, + GTK_WINDOW (self), &error); + if (res == GTK_PRINT_OPERATION_RESULT_APPLY) + { + if (settings != NULL) + g_object_unref (settings); + settings + = g_object_ref (gtk_print_operation_get_print_settings (print)); + } + if (error) + display_and_free_error (self, _("Error"), error); + + g_object_unref (print); +} + +static void +on_action_print_draw_page (GtkPrintOperation *operation, + GtkPrintContext *context, int page_nr, LdWindowMain *self) +{ + cairo_t *cr; + LdDiagramView *view; + gdouble area_width_mm, area_height_mm; + gdouble diagram_width_mm, diagram_height_mm; + gdouble diagram_to_export_units, scale; + LdRectangle bounds; + + cr = gtk_print_context_get_cairo_context (context); + view = self->priv->view; + + area_width_mm = gtk_print_context_get_width (context); + area_height_mm = gtk_print_context_get_height (context); + diagram_to_export_units = ld_diagram_view_get_export_bounds (view, &bounds); + + /* Scale for the view's constant, measured in milimetres. */ + scale = 1 / diagram_to_export_units * LD_DIAGRAM_VIEW_BASE_UNIT_LENGTH; + diagram_width_mm = bounds.width * scale; + diagram_height_mm = bounds.height * scale; + + /* Scale to fit the paper. */ + if (area_width_mm < diagram_width_mm) + scale *= area_width_mm / diagram_width_mm; + if (area_height_mm < diagram_height_mm) + scale *= area_height_mm / diagram_height_mm; + + cairo_scale (cr, scale, scale); + cairo_translate (cr, -bounds.x, -bounds.y); + ld_diagram_view_export (view, cr, &bounds); +} + +static void on_action_quit (GtkAction *action, LdWindowMain *self) { if (may_quit (self)) |