gimp/plug-ins/print/print.c

/* GIMP - The GNU Image Manipulation Program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include "config.h"

#include <string.h>

#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>

#include "print.h"
#include "print-settings.h"
#include "print-page-layout.h"
#include "print-draw-page.h"

#include "libgimp/stdplugins-intl.h"


#define PRINT_PROC_NAME  "file-print-gtk"
#define PLUG_IN_BINARY   "print"


static void        query (void);
static void        run   (const gchar       *name,
                          gint               nparams,
                          const GimpParam   *param,
                          gint              *nreturn_vals,
                          GimpParam        **return_vals);

static gboolean    print_image          (gint32             image_ID,
                                         gint32             drawable_ID,
                                         gboolean           interactive);

static void        begin_print          (GtkPrintOperation *operation,
                                         GtkPrintContext   *context,
                                         PrintData         *data);

static void        end_print            (GtkPrintOperation *operation,
                                         GtkPrintContext   *context,
                                         PrintData         *data);

static void        draw_page            (GtkPrintOperation *print,
                                         GtkPrintContext   *context,
                                         int                page_nr,
                                         PrintData         *data);
static void        print_status_changed (GtkPrintOperation *operation);

static GtkWidget * create_custom_widget (GtkPrintOperation *operation,
                                         PrintData         *data);



const GimpPlugInInfo PLUG_IN_INFO =
{
  NULL,  /* init_proc  */
  NULL,  /* quit_proc  */
  query, /* query_proc */
  run,   /* run_proc   */
};

MAIN ()

static void
query (void)
{
  static const GimpParamDef print_args[] =
  {
    { GIMP_PDB_INT32,    "run-mode", "Interactive, non-interactive" },
    { GIMP_PDB_IMAGE,    "image",    "Input image"                  },
    { GIMP_PDB_DRAWABLE, "drawable", "Drawable to print"            }
  };

  gimp_install_procedure (PRINT_PROC_NAME,
                          N_("Print the image"),
                          "Print the image using the GTK+ Print API.",
                          "Bill Skaggs  <weskaggs@primate.ucdavis.edu>",
                          "Bill Skaggs  <weskaggs@primate.ucdavis.edu>",
                          "2006",
                          N_("_Print..."),
                          "*",
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (print_args), 0,
                          print_args, NULL);

  gimp_plugin_menu_register (PRINT_PROC_NAME, "<Image>/File/Send");
  gimp_plugin_icon_register (PRINT_PROC_NAME, GIMP_ICON_TYPE_STOCK_ID,
                             (const guint8 *) GTK_STOCK_PRINT);

}

static void
run (const gchar      *name,
     gint              nparams,
     const GimpParam  *param,
     gint             *nreturn_vals,
     GimpParam       **return_vals)
{
  static GimpParam  values[2];
  GimpRunMode       run_mode;
  GimpPDBStatusType status = GIMP_PDB_SUCCESS;
  gint32            image_ID;
  gint32            drawable_ID;

  run_mode = param[0].data.d_int32;

  INIT_I18N ();

  *nreturn_vals = 1;
  *return_vals  = values;

  values[0].type          = GIMP_PDB_STATUS;
  values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;

  image_ID    = param[1].data.d_int32;
  drawable_ID = param[2].data.d_int32;

  if (strcmp (name, PRINT_PROC_NAME) == 0)
    {
      if (run_mode == GIMP_RUN_INTERACTIVE)
        gimp_ui_init (PLUG_IN_BINARY, FALSE);

      if (! print_image (image_ID, drawable_ID,
                         run_mode == GIMP_RUN_INTERACTIVE))
        {
          status = GIMP_PDB_EXECUTION_ERROR;
        }
    }
  else
    {
      status = GIMP_PDB_CALLING_ERROR;
    }

  values[0].data.d_status = status;
}

static gboolean
print_image (gint32    image_ID,
             gint32    drawable_ID,
             gboolean  interactive)
{
  GtkPrintOperation *operation = gtk_print_operation_new ();
  GError            *error     = NULL;
  PrintData         *data;

  data = g_new0 (PrintData, 1);

  data->num_pages   = 1;
  data->image_id    = image_ID;
  data->drawable_id = drawable_ID;
  data->operation   = operation;
  data->unit        = gimp_get_default_unit ();
  gimp_image_get_resolution (data->image_id, &data->xres, &data->yres);

  load_print_settings (data);

  g_signal_connect (operation, "begin-print",
                    G_CALLBACK (begin_print),
                    data);
  g_signal_connect (operation, "draw-page",
                    G_CALLBACK (draw_page),
                    data);
  g_signal_connect (operation, "end-print",
                    G_CALLBACK (end_print),
                    data);

  if (interactive)
    {
      GtkPrintOperationResult  result;

      g_signal_connect (operation, "create-custom-widget",
                        G_CALLBACK (create_custom_widget),
                        data);

      gtk_print_operation_set_custom_tab_label (operation, _("Image"));

      g_signal_connect (operation, "status-changed",
                        G_CALLBACK (print_status_changed),
                        &result);

      result = gtk_print_operation_run (operation,
                                        GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
                                        NULL, &error);

      switch (result)
        {
        case GTK_PRINT_OPERATION_RESULT_APPLY:
        case GTK_PRINT_OPERATION_RESULT_IN_PROGRESS:
          save_print_settings (data);
          break;

        case GTK_PRINT_OPERATION_RESULT_ERROR:
        case GTK_PRINT_OPERATION_RESULT_CANCEL:
          break;
        }
    }
  else
    {
      gtk_print_operation_run (operation,
                               GTK_PRINT_OPERATION_ACTION_PRINT,
                               NULL, &error);
    }

  g_object_unref (operation);

  if (error)
    {
      GtkWidget *dialog;

      dialog = gtk_message_dialog_new (NULL, 0,
                                       GTK_MESSAGE_ERROR,
                                       GTK_BUTTONS_OK,
                                       _("An error occurred while trying to print:"));

      gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
                                                error->message);
      g_error_free (error);

      gimp_window_set_transient (GTK_WINDOW (dialog));

      gtk_dialog_run (GTK_DIALOG (dialog));
      gtk_widget_destroy (dialog);
    }

  return TRUE;
}

static void
begin_print (GtkPrintOperation *operation,
             GtkPrintContext   *context,
             PrintData         *data)
{
  data->num_pages = 1;

  gtk_print_operation_set_n_pages (operation, data->num_pages);

  gimp_progress_init (_("Printing"));
}

static void
end_print (GtkPrintOperation *operation,
           GtkPrintContext   *context,
           PrintData         *data)
{
  gimp_progress_update (1.0);
}

static void
print_status_changed (GtkPrintOperation *operation)
{
  const gchar *status = gtk_print_operation_get_status_string (operation);

  if (status && strlen (status))
    {
      /* display status of the print operation in the status bar */
      gimp_progress_set_text_printf (_("Print: %s"), status);
    }
}

static void
draw_page (GtkPrintOperation *operation,
           GtkPrintContext   *context,
           int                page_nr,
           PrintData         *data)
{
  draw_page_cairo (context, data);
}

/*
 * This callback creates a "custom" widget that gets inserted into the
 * print operation dialog.
 */
static GtkWidget *
create_custom_widget (GtkPrintOperation *operation,
                      PrintData         *data)
{
  return print_page_layout_gui (data);
}