Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1951 insertions, 0 deletions

diff --git a/plug-ins/common/file-pdf-load.c b/plug-ins/common/file-pdf-load.c
new file mode 100644
index 0000000..b2c12fa
--- /dev/null
+++ b/plug-ins/common/file-pdf-load.c
@@ -0,0 +1,1951 @@
+/* GIMP - The GNU Image Manipulation Program
+ *
+ * file-pdf-load.c - PDF file loader
+ *
+ * Copyright (C) 2005 Nathan Summers
+ *
+ * Some code in render_page_to_surface() borrowed from
+ * poppler.git/glib/poppler-page.cc.
+ *
+ * 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 3 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#undef GTK_DISABLE_SINGLE_INCLUDES
+#include <poppler.h>
+#define GTK_DISABLE_SINGLE_INCLUDES
+
+#include "libgimp/stdplugins-intl.h"
+
+
+#define LOAD_PROC       "file-pdf-load"
+#define LOAD2_PROC      "file-pdf-load2"
+#define LOAD_THUMB_PROC "file-pdf-load-thumb"
+#define PLUG_IN_BINARY  "file-pdf-load"
+#define PLUG_IN_ROLE    "gimp-file-pdf-load"
+
+#define THUMBNAIL_SIZE  128
+
+#define GIMP_PLUGIN_PDF_LOAD_ERROR gimp_plugin_pdf_load_error_quark ()
+static GQuark
+gimp_plugin_pdf_load_error_quark (void)
+{
+  return g_quark_from_static_string ("gimp-plugin-pdf-load-error-quark");
+}
+
+/* Structs for the load dialog */
+typedef struct
+{
+  GimpPageSelectorTarget  target;
+  gdouble                 resolution;
+  gboolean                antialias;
+  gchar                  *PDF_password;
+} PdfLoadVals;
+
+static PdfLoadVals loadvals =
+{
+  GIMP_PAGE_SELECTOR_TARGET_LAYERS,
+  100.00,  /* 100 dpi   */
+  TRUE,
+  NULL
+};
+
+typedef struct
+{
+  gint  n_pages;
+  gint *pages;
+} PdfSelectedPages;
+
+/* Declare local functions */
+static void              query             (void);
+static void              run               (const gchar            *name,
+                                            gint                    nparams,
+                                            const GimpParam        *param,
+                                            gint                   *nreturn_vals,
+                                            GimpParam             **return_vals);
+
+static gint32            load_image        (PopplerDocument        *doc,
+                                            const gchar            *filename,
+                                            GimpRunMode             run_mode,
+                                            GimpPageSelectorTarget  target,
+                                            guint32                 resolution,
+                                            gboolean                antialias,
+                                            PdfSelectedPages       *pages);
+
+static GimpPDBStatusType load_dialog       (PopplerDocument        *doc,
+                                            PdfSelectedPages       *pages);
+
+static PopplerDocument * open_document     (const gchar            *filename,
+                                            const gchar            *PDF_password,
+                                            GimpRunMode             run_mode,
+                                            GError                **error);
+
+static cairo_surface_t * get_thumb_surface (PopplerDocument        *doc,
+                                            gint                    page,
+                                            gint                    preferred_size);
+
+static GdkPixbuf *       get_thumb_pixbuf  (PopplerDocument        *doc,
+                                            gint                    page,
+                                            gint                    preferred_size);
+
+static gint32            layer_from_surface (gint32                  image,
+                                             const gchar            *layer_name,
+                                             gint                    position,
+                                             cairo_surface_t        *surface,
+                                             gdouble                 progress_start,
+                                             gdouble                 progress_scale);
+
+/**
+ ** the following was formerly part of
+ ** gimpresolutionentry.h and gimpresolutionentry.c,
+ ** moved here because this is the only thing that uses
+ ** it, and it is undesirable to maintain all that api.
+ ** Most unused functions have been removed.
+ **/
+#define GIMP_TYPE_RESOLUTION_ENTRY            (gimp_resolution_entry_get_type ())
+#define GIMP_RESOLUTION_ENTRY(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_RESOLUTION_ENTRY, GimpResolutionEntry))
+#define GIMP_RESOLUTION_ENTRY_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_RESOLUTION_ENTRY, GimpResolutionEntryClass))
+#define GIMP_IS_RESOLUTION_ENTRY(obj)         (G_TYPE_CHECK_INSTANCE_TYPE (obj, GIMP_TYPE_RESOLUTION_ENTRY))
+#define GIMP_IS_RESOLUTION_ENTRY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_RESOLUTION_ENTRY))
+#define GIMP_RESOLUTION_ENTRY_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_RESOLUTION_ENTRY, GimpResolutionEntryClass))
+
+
+typedef struct _GimpResolutionEntry       GimpResolutionEntry;
+typedef struct _GimpResolutionEntryClass  GimpResolutionEntryClass;
+
+typedef struct _GimpResolutionEntryField  GimpResolutionEntryField;
+
+struct _GimpResolutionEntryField
+{
+  GimpResolutionEntry      *gre;
+  GimpResolutionEntryField *corresponding;
+
+  gboolean       size;
+
+  GtkWidget     *label;
+
+  guint          changed_signal;
+
+  GtkAdjustment *adjustment;
+  GtkWidget     *spinbutton;
+
+  gdouble        phy_size;
+
+  gdouble        value;
+  gdouble        min_value;
+  gdouble        max_value;
+
+  gint           stop_recursion;
+};
+
+
+struct _GimpResolutionEntry
+{
+  GtkTable                  parent_instance;
+
+  GimpUnit                  size_unit;
+  GimpUnit                  unit;
+
+  GtkWidget                *unitmenu;
+  GtkWidget                *chainbutton;
+
+  GimpResolutionEntryField  width;
+  GimpResolutionEntryField  height;
+  GimpResolutionEntryField  x;
+  GimpResolutionEntryField  y;
+
+};
+
+struct _GimpResolutionEntryClass
+{
+  GtkTableClass  parent_class;
+
+  void (* value_changed)  (GimpResolutionEntry *gse);
+  void (* refval_changed) (GimpResolutionEntry *gse);
+  void (* unit_changed)   (GimpResolutionEntry *gse);
+};
+
+
+GType       gimp_resolution_entry_get_type (void) G_GNUC_CONST;
+
+GtkWidget * gimp_resolution_entry_new          (const gchar   *width_label,
+                                                gdouble        width,
+                                                const gchar   *height_label,
+                                                gdouble        height,
+                                                GimpUnit       size_unit,
+                                                const gchar   *res_label,
+                                                gdouble        initial_res,
+                                                GimpUnit       initial_unit);
+
+GtkWidget * gimp_resolution_entry_attach_label (GimpResolutionEntry *gre,
+                                                const gchar         *text,
+                                                gint                 row,
+                                                gint                 column,
+                                                gfloat               alignment);
+
+gdouble     gimp_resolution_entry_get_x_in_dpi (GimpResolutionEntry *gre);
+
+gdouble     gimp_resolution_entry_get_y_in_dpi (GimpResolutionEntry *gre);
+
+
+/* signal callback convenience functions */
+void        gimp_resolution_entry_update_x_in_dpi (GimpResolutionEntry *gre,
+                                                   gpointer             data);
+
+void        gimp_resolution_entry_update_y_in_dpi (GimpResolutionEntry *gre,
+                                                   gpointer             data);
+
+
+enum
+{
+  WIDTH_CHANGED,
+  HEIGHT_CHANGED,
+  X_CHANGED,
+  Y_CHANGED,
+  UNIT_CHANGED,
+  LAST_SIGNAL
+};
+
+static void   gimp_resolution_entry_class_init      (GimpResolutionEntryClass *class);
+static void   gimp_resolution_entry_init            (GimpResolutionEntry      *gre);
+
+static void   gimp_resolution_entry_update_value    (GimpResolutionEntryField *gref,
+                                                     gdouble              value);
+static void   gimp_resolution_entry_value_callback  (GtkWidget           *widget,
+                                                     gpointer             data);
+static void   gimp_resolution_entry_update_unit     (GimpResolutionEntry *gre,
+                                                     GimpUnit             unit);
+static void   gimp_resolution_entry_unit_callback   (GtkWidget           *widget,
+                                                     GimpResolutionEntry *gre);
+
+static void   gimp_resolution_entry_field_init (GimpResolutionEntry      *gre,
+                                                GimpResolutionEntryField *gref,
+                                                GimpResolutionEntryField *corresponding,
+                                                guint                     changed_signal,
+                                                gdouble                   initial_val,
+                                                GimpUnit                  initial_unit,
+                                                gboolean                  size,
+                                                gint                      spinbutton_width);
+
+static void   gimp_resolution_entry_format_label (GimpResolutionEntry *gre,
+                                                  GtkWidget           *label,
+                                                  gdouble              size);
+
+/**
+ ** end of gimpresolutionentry stuff
+ ** the actual code can be found at the end of this file
+ **/
+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 load_args[] =
+  {
+    { GIMP_PDB_INT32,     "run-mode",     "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }"     },
+    { GIMP_PDB_STRING,    "filename",     "The name of the file to load"     },
+    { GIMP_PDB_STRING,    "raw-filename", "The name entered"                 }
+  };
+
+  static const GimpParamDef load2_args[] =
+  {
+    { GIMP_PDB_INT32,     "run-mode",     "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+    { GIMP_PDB_STRING,    "filename",     "The name of the file to load"                                 },
+    { GIMP_PDB_STRING,    "raw-filename", "The name entered"                                             },
+    { GIMP_PDB_STRING,    "pdf-password", "The password to decrypt the encrypted PDF file"               },
+    { GIMP_PDB_INT32,     "n-pages",      "Number of pages to load (0 for all)"                          },
+    { GIMP_PDB_INT32ARRAY,"pages",        "The pages to load in the expected order"                      },
+    /* XXX: Nice to have API at some point, but needs work
+    { GIMP_PDB_INT32,     "resolution",   "Resolution to rasterize to (dpi)" },
+    { GIMP_PDB_INT32,     "antialiasing", "Use anti-aliasing" }, */
+  };
+
+  static const GimpParamDef load_return_vals[] =
+  {
+    { GIMP_PDB_IMAGE,     "image",        "Output image" }
+  };
+
+  static const GimpParamDef thumb_args[] =
+  {
+    { GIMP_PDB_STRING,    "filename",     "The name of the file to load"  },
+    { GIMP_PDB_INT32,     "thumb-size",   "Preferred thumbnail size"      }
+  };
+
+  static const GimpParamDef thumb_return_vals[] =
+  {
+    { GIMP_PDB_IMAGE,  "image",        "Thumbnail image"               },
+    { GIMP_PDB_INT32,  "image-width",  "Width of full-sized image"     },
+    { GIMP_PDB_INT32,  "image-height", "Height of full-sized image"    },
+    { GIMP_PDB_INT32,  "image-type",   "Image type"                    },
+    { GIMP_PDB_INT32,  "num-layers",   "Number of pages"               }
+  };
+
+  gimp_install_procedure (LOAD_PROC,
+                          "Load file in PDF format",
+                          "Loads files in Adobe's Portable Document Format. "
+                          "PDF is designed to be easily processed by a variety "
+                          "of different platforms, and is a distant cousin of "
+                          "PostScript.\n"
+                          "If the PDF document has multiple pages, only the first "
+                          "page will be loaded. Call file_pdf_load2() to load "
+                          "several pages as layers.",
+                          "Nathan Summers",
+                          "Nathan Summers",
+                          "2005",
+                          N_("Portable Document Format"),
+                          NULL,
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (load_args),
+                          G_N_ELEMENTS (load_return_vals),
+                          load_args, load_return_vals);
+
+  gimp_install_procedure (LOAD2_PROC,
+                          "Load file in PDF format",
+                          "Loads files in Adobe's Portable Document Format. "
+                          "PDF is designed to be easily processed by a variety "
+                          "of different platforms, and is a distant cousin of "
+                          "PostScript.\n"
+                          "This procedure adds extra parameters to "
+                          "file-pdf-load to open encrypted PDF and to allow "
+                          "multiple page loading.",
+                          "Nathan Summers, Lionel N.",
+                          "Nathan Summers, Lionel N.",
+                          "2005, 2017",
+                          N_("Portable Document Format"),
+                          NULL,
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (load2_args),
+                          G_N_ELEMENTS (load_return_vals),
+                          load2_args, load_return_vals);
+
+  gimp_register_file_handler_mime (LOAD2_PROC, "application/pdf");
+  gimp_register_magic_load_handler (LOAD2_PROC,
+                                    "pdf",
+                                    "",
+                                    "0, string,%PDF-");
+
+  gimp_install_procedure (LOAD_THUMB_PROC,
+                          "Loads a preview from a PDF file.",
+                          "Loads a small preview of the first page of the PDF "
+                          "format file. Uses the embedded thumbnail if "
+                          "present.",
+                          "Nathan Summers",
+                          "Nathan Summers",
+                          "2005",
+                          NULL,
+                          NULL,
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (thumb_args),
+                          G_N_ELEMENTS (thumb_return_vals),
+                          thumb_args, thumb_return_vals);
+
+  gimp_register_thumbnail_loader (LOAD2_PROC, LOAD_THUMB_PROC);
+}
+
+static void
+run (const gchar      *name,
+     gint              nparams,
+     const GimpParam  *param,
+     gint             *nreturn_vals,
+     GimpParam       **return_vals)
+{
+  static GimpParam  values[7];
+  GimpPDBStatusType status   = GIMP_PDB_SUCCESS;
+  gint32            image_ID = -1;
+  PopplerDocument  *doc      = NULL;
+  GError           *error    = NULL;
+
+  INIT_I18N ();
+  gegl_init (NULL, NULL);
+
+  *nreturn_vals = 1;
+  *return_vals  = values;
+
+  values[0].type          = GIMP_PDB_STATUS;
+  values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
+
+  if (strcmp (name, LOAD_PROC) == 0 || strcmp (name, LOAD2_PROC) == 0)
+    {
+      PdfSelectedPages pages = { 0, NULL };
+      GimpRunMode      run_mode;
+
+      run_mode = param[0].data.d_int32;
+      switch (run_mode)
+        {
+        case GIMP_RUN_INTERACTIVE:
+          /* Possibly retrieve last settings */
+          if (strcmp (name, LOAD_PROC) == 0)
+            {
+              gimp_get_data (LOAD_PROC, &loadvals);
+            }
+          else if (strcmp (name, LOAD2_PROC) == 0)
+            {
+              gimp_get_data (LOAD2_PROC, &loadvals);
+            }
+          gimp_ui_init (PLUG_IN_BINARY, FALSE);
+          doc = open_document (param[1].data.d_string,
+                               loadvals.PDF_password,
+                               run_mode, &error);
+
+          if (!doc)
+            {
+              status = GIMP_PDB_EXECUTION_ERROR;
+              break;
+            }
+
+          status = load_dialog (doc, &pages);
+          if (status == GIMP_PDB_SUCCESS)
+            {
+              if (strcmp (name, LOAD_PROC) == 0)
+                {
+                  gimp_set_data (LOAD_PROC, &loadvals, sizeof(loadvals));
+                }
+              else if (strcmp (name, LOAD2_PROC) == 0)
+                {
+                  gimp_set_data (LOAD2_PROC, &loadvals, sizeof(loadvals));
+                }
+            }
+          break;
+
+        case GIMP_RUN_WITH_LAST_VALS:
+          /* FIXME: implement last vals mode */
+          status = GIMP_PDB_EXECUTION_ERROR;
+          break;
+
+        case GIMP_RUN_NONINTERACTIVE:
+          if (strcmp (name, LOAD_PROC) == 0)
+            {
+              doc = open_document (param[1].data.d_string,
+                                   NULL, run_mode, &error);
+            }
+          else if (strcmp (name, LOAD2_PROC) == 0)
+            {
+              doc = open_document (param[1].data.d_string,
+                                   param[3].data.d_string,
+                                   run_mode, &error);
+            }
+
+          if (doc)
+            {
+              PopplerPage *test_page = poppler_document_get_page (doc, 0);
+
+              if (test_page)
+                {
+                  if (strcmp (name, LOAD2_PROC) != 0)
+                    {
+                      /* For retrocompatibility, file-pdf-load always
+                       * just loads the first page. */
+                      pages.n_pages = 1;
+                      pages.pages = g_new (gint, 1);
+                      pages.pages[0] = 0;
+
+                      g_object_unref (test_page);
+                    }
+                  else
+                    {
+                      gint i;
+                      gint doc_n_pages;
+
+                      doc_n_pages = poppler_document_get_n_pages (doc);
+                      /* The number of imported pages may be bigger than
+                       * the number of pages from the original document.
+                       * Indeed it is possible to duplicate some pages
+                       * by setting the same number several times in the
+                       * "pages" argument.
+                       * Not ceiling this value is *not* an error.
+                       */
+                      pages.n_pages = param[4].data.d_int32;
+                      if (pages.n_pages <= 0)
+                        {
+                          pages.n_pages = doc_n_pages;
+                          pages.pages = g_new (gint, pages.n_pages);
+                          for (i = 0; i < pages.n_pages; i++)
+                            pages.pages[i] = i;
+                        }
+                      else
+                        {
+                          pages.pages = g_new (gint, pages.n_pages);
+                          for (i = 0; i < pages.n_pages; i++)
+                            {
+                              if (param[5].data.d_int32array[i] >= doc_n_pages)
+                                {
+                                  status = GIMP_PDB_EXECUTION_ERROR;
+                                  g_set_error (&error, GIMP_PLUGIN_PDF_LOAD_ERROR, 0,
+                                               /* TRANSLATORS: first argument is file name,
+                                                * second is out-of-range page number, third is
+                                                * number of pages. Specify order as in English if needed.
+                                                */
+                                               ngettext ("PDF document '%1$s' has %3$d page. Page %2$d is out of range.",
+                                                         "PDF document '%1$s' has %3$d pages. Page %2$d is out of range.",
+                                                         doc_n_pages),
+                                               param[1].data.d_string,
+                                               param[5].data.d_int32array[i],
+                                               doc_n_pages);
+                                  break;
+                                }
+                              else
+                                {
+                                  pages.pages[i] = param[5].data.d_int32array[i];
+                                }
+                            }
+                        }
+                      g_object_unref (test_page);
+                    }
+                }
+              else
+                {
+                  status = GIMP_PDB_EXECUTION_ERROR;
+                  g_object_unref (doc);
+                }
+            }
+          else
+            {
+              status = GIMP_PDB_EXECUTION_ERROR;
+            }
+          break;
+        }
+
+      if (status == GIMP_PDB_SUCCESS)
+        {
+          image_ID = load_image (doc, param[1].data.d_string,
+                                 run_mode,
+                                 loadvals.target,
+                                 loadvals.resolution,
+                                 loadvals.antialias,
+                                 &pages);
+
+          if (image_ID != -1)
+            {
+              *nreturn_vals = 2;
+              values[1].type         = GIMP_PDB_IMAGE;
+              values[1].data.d_image = image_ID;
+            }
+          else
+            {
+              status = GIMP_PDB_EXECUTION_ERROR;
+            }
+        }
+
+      if (doc)
+        g_object_unref (doc);
+
+      g_free (pages.pages);
+    }
+  else if (strcmp (name, LOAD_THUMB_PROC) == 0)
+    {
+      if (nparams < 2)
+        {
+          status = GIMP_PDB_CALLING_ERROR;
+        }
+      else
+        {
+          gdouble          width     = 0;
+          gdouble          height    = 0;
+          gdouble          scale;
+          gint32           image     = -1;
+          gint             num_pages = 0;
+          cairo_surface_t *surface   = NULL;
+
+          /* Possibly retrieve last settings */
+          if (strcmp (name, LOAD_PROC) == 0)
+            {
+              gimp_get_data (LOAD_PROC, &loadvals);
+            }
+          else if (strcmp (name, LOAD2_PROC) == 0)
+            {
+              gimp_get_data (LOAD2_PROC, &loadvals);
+            }
+
+          doc = open_document (param[0].data.d_string,
+                               loadvals.PDF_password,
+                               GIMP_RUN_NONINTERACTIVE,
+                               &error);
+
+          if (doc)
+            {
+              PopplerPage *page = poppler_document_get_page (doc, 0);
+
+              if (page)
+                {
+                  poppler_page_get_size (page, &width, &height);
+
+                  g_object_unref (page);
+                }
+
+              num_pages = poppler_document_get_n_pages (doc);
+
+              surface = get_thumb_surface (doc, 0, param[1].data.d_int32);
+
+              g_object_unref (doc);
+            }
+
+          if (surface)
+            {
+              image = gimp_image_new (cairo_image_surface_get_width (surface),
+                                      cairo_image_surface_get_height (surface),
+                                      GIMP_RGB);
+
+              gimp_image_undo_disable (image);
+
+
+              layer_from_surface (image, "thumbnail", 0, surface, 0.0, 1.0);
+              cairo_surface_destroy (surface);
+
+              gimp_image_undo_enable (image);
+              gimp_image_clean_all (image);
+            }
+
+          scale = loadvals.resolution / gimp_unit_get_factor (GIMP_UNIT_POINT);
+
+          width  *= scale;
+          height *= scale;
+
+          if (image != -1)
+            {
+              *nreturn_vals = 6;
+
+              values[1].type         = GIMP_PDB_IMAGE;
+              values[1].data.d_image = image;
+              values[2].type         = GIMP_PDB_INT32;
+              values[2].data.d_int32 = width;
+              values[3].type         = GIMP_PDB_INT32;
+              values[3].data.d_int32 = height;
+              values[4].type         = GIMP_PDB_INT32;
+              values[4].data.d_int32 = GIMP_RGB_IMAGE;
+              values[5].type         = GIMP_PDB_INT32;
+              values[5].data.d_int32 = num_pages;
+            }
+          else
+            {
+              status = GIMP_PDB_EXECUTION_ERROR;
+            }
+        }
+
+    }
+  else
+    {
+      status = GIMP_PDB_CALLING_ERROR;
+    }
+
+  if (status != GIMP_PDB_SUCCESS && error)
+    {
+      *nreturn_vals = 2;
+      values[1].type          = GIMP_PDB_STRING;
+      values[1].data.d_string = error->message;
+    }
+
+  values[0].data.d_status = status;
+
+  gegl_exit ();
+}
+
+static PopplerDocument*
+open_document (const gchar  *filename,
+               const gchar  *PDF_password,
+               GimpRunMode   run_mode,
+               GError      **load_error)
+{
+  PopplerDocument *doc;
+  GFile           *file;
+  GError          *error = NULL;
+
+  file = g_file_new_for_path (filename);
+  doc = poppler_document_new_from_gfile (file, PDF_password, NULL, &error);
+
+  if (run_mode == GIMP_RUN_INTERACTIVE)
+    {
+      GtkWidget *label;
+
+      label = gtk_label_new (_("PDF is password protected, please input the password:"));
+      while (error                          &&
+             error->domain == POPPLER_ERROR &&
+             error->code == POPPLER_ERROR_ENCRYPTED)
+        {
+          GtkWidget *vbox;
+          GtkWidget *dialog;
+          GtkWidget *entry;
+          gint       run;
+
+          dialog = gimp_dialog_new (_("Encrypted PDF"), PLUG_IN_ROLE,
+                                    NULL, 0,
+                                    NULL, NULL,
+                                    _("_Cancel"), GTK_RESPONSE_CANCEL,
+                                    _("_OK"), GTK_RESPONSE_OK,
+                                    NULL);
+          gimp_window_set_transient (GTK_WINDOW (dialog));
+          vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+          gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+          gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
+                              vbox, TRUE, TRUE, 0);
+          entry = gtk_entry_new ();
+          gtk_entry_set_visibility (GTK_ENTRY (entry), FALSE);
+          gtk_entry_set_activates_default (GTK_ENTRY (entry), TRUE);
+          gtk_container_add (GTK_CONTAINER (vbox), label);
+          gtk_container_add (GTK_CONTAINER (vbox), entry);
+
+          gtk_widget_show_all (dialog);
+
+          run = gimp_dialog_run (GIMP_DIALOG (dialog));
+          if (run == GTK_RESPONSE_OK)
+            {
+              g_clear_error (&error);
+              doc = poppler_document_new_from_gfile (file,
+                                                     gtk_entry_get_text (GTK_ENTRY (entry)),
+                                                     NULL, &error);
+            }
+          label = gtk_label_new (_("Wrong password! Please input the right one:"));
+          gtk_widget_destroy (dialog);
+          if (run == GTK_RESPONSE_CANCEL || run == GTK_RESPONSE_DELETE_EVENT)
+            {
+              break;
+            }
+        }
+      gtk_widget_destroy (label);
+    }
+  g_object_unref (file);
+
+  /* We can't g_mapped_file_unref(mapped_file) as apparently doc has
+   * references to data in there. No big deal, this is just a
+   * short-lived plug-in.
+   */
+  if (! doc)
+    {
+      g_set_error (load_error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
+                   _("Could not load '%s': %s"),
+                   gimp_filename_to_utf8 (filename),
+                   error->message);
+      g_error_free (error);
+      return NULL;
+    }
+
+  return doc;
+}
+
+/* FIXME: Remove this someday when we depend fully on GTK+ >= 3 */
+
+#if (!GTK_CHECK_VERSION (3, 0, 0))
+
+static cairo_format_t
+gdk_cairo_format_for_content (cairo_content_t content)
+{
+  switch (content)
+    {
+    case CAIRO_CONTENT_COLOR:
+      return CAIRO_FORMAT_RGB24;
+    case CAIRO_CONTENT_ALPHA:
+      return CAIRO_FORMAT_A8;
+    case CAIRO_CONTENT_COLOR_ALPHA:
+    default:
+      return CAIRO_FORMAT_ARGB32;
+    }
+}
+
+static cairo_surface_t *
+gdk_cairo_surface_coerce_to_image (cairo_surface_t *surface,
+                                   cairo_content_t  content,
+                                   int              src_x,
+                                   int              src_y,
+                                   int              width,
+                                   int              height)
+{
+  cairo_surface_t *copy;
+  cairo_t *cr;
+
+  copy = cairo_image_surface_create (gdk_cairo_format_for_content (content),
+                                     width,
+                                     height);
+
+  cr = cairo_create (copy);
+  cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+  cairo_set_source_surface (cr, surface, -src_x, -src_y);
+  cairo_paint (cr);
+  cairo_destroy (cr);
+
+  return copy;
+}
+
+static void
+convert_alpha (guchar *dest_data,
+               int     dest_stride,
+               guchar *src_data,
+               int     src_stride,
+               int     src_x,
+               int     src_y,
+               int     width,
+               int     height)
+{
+  int x, y;
+
+  src_data += src_stride * src_y + src_x * 4;
+
+  for (y = 0; y < height; y++) {
+    guint32 *src = (guint32 *) src_data;
+
+    for (x = 0; x < width; x++) {
+      guint alpha = src[x] >> 24;
+
+      if (alpha == 0)
+        {
+          dest_data[x * 4 + 0] = 0;
+          dest_data[x * 4 + 1] = 0;
+          dest_data[x * 4 + 2] = 0;
+        }
+      else
+        {
+          dest_data[x * 4 + 0] = (((src[x] & 0xff0000) >> 16) * 255 + alpha / 2) / alpha;
+          dest_data[x * 4 + 1] = (((src[x] & 0x00ff00) >>  8) * 255 + alpha / 2) / alpha;
+          dest_data[x * 4 + 2] = (((src[x] & 0x0000ff) >>  0) * 255 + alpha / 2) / alpha;
+        }
+      dest_data[x * 4 + 3] = alpha;
+    }
+
+    src_data += src_stride;
+    dest_data += dest_stride;
+  }
+}
+
+static void
+convert_no_alpha (guchar *dest_data,
+                  int     dest_stride,
+                  guchar *src_data,
+                  int     src_stride,
+                  int     src_x,
+                  int     src_y,
+                  int     width,
+                  int     height)
+{
+  int x, y;
+
+  src_data += src_stride * src_y + src_x * 4;
+
+  for (y = 0; y < height; y++) {
+    guint32 *src = (guint32 *) src_data;
+
+    for (x = 0; x < width; x++) {
+      dest_data[x * 3 + 0] = src[x] >> 16;
+      dest_data[x * 3 + 1] = src[x] >>  8;
+      dest_data[x * 3 + 2] = src[x];
+    }
+
+    src_data += src_stride;
+    dest_data += dest_stride;
+  }
+}
+
+/**
+ * gdk_pixbuf_get_from_surface:
+ * @surface: surface to copy from
+ * @src_x: Source X coordinate within @surface
+ * @src_y: Source Y coordinate within @surface
+ * @width: Width in pixels of region to get
+ * @height: Height in pixels of region to get
+ *
+ * Transfers image data from a #cairo_surface_t and converts it to an RGB(A)
+ * representation inside a #GdkPixbuf. This allows you to efficiently read
+ * individual pixels from cairo surfaces. For #GdkWindows, use
+ * gdk_pixbuf_get_from_window() instead.
+ *
+ * This function will create an RGB pixbuf with 8 bits per channel.
+ * The pixbuf will contain an alpha channel if the @surface contains one.
+ *
+ * Return value: (transfer full): A newly-created pixbuf with a reference
+ *     count of 1, or %NULL on error
+ */
+static GdkPixbuf *
+gdk_pixbuf_get_from_surface  (cairo_surface_t *surface,
+                              gint             src_x,
+                              gint             src_y,
+                              gint             width,
+                              gint             height)
+{
+  cairo_content_t content;
+  GdkPixbuf *dest;
+
+  /* General sanity checks */
+  g_return_val_if_fail (surface != NULL, NULL);
+  g_return_val_if_fail (width > 0 && height > 0, NULL);
+
+  content = cairo_surface_get_content (surface) | CAIRO_CONTENT_COLOR;
+  dest = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
+                         !!(content & CAIRO_CONTENT_ALPHA),
+                         8,
+                         width, height);
+
+  surface = gdk_cairo_surface_coerce_to_image (surface, content,
+                                               src_x, src_y,
+                                               width, height);
+  cairo_surface_flush (surface);
+  if (cairo_surface_status (surface) || dest == NULL)
+    {
+      cairo_surface_destroy (surface);
+      return NULL;
+    }
+
+  if (gdk_pixbuf_get_has_alpha (dest))
+    convert_alpha (gdk_pixbuf_get_pixels (dest),
+                   gdk_pixbuf_get_rowstride (dest),
+                   cairo_image_surface_get_data (surface),
+                   cairo_image_surface_get_stride (surface),
+                   0, 0,
+                   width, height);
+  else
+    convert_no_alpha (gdk_pixbuf_get_pixels (dest),
+                      gdk_pixbuf_get_rowstride (dest),
+                      cairo_image_surface_get_data (surface),
+                      cairo_image_surface_get_stride (surface),
+                      0, 0,
+                      width, height);
+
+  cairo_surface_destroy (surface);
+  return dest;
+}
+
+#endif
+
+static gint32
+layer_from_surface (gint32           image,
+                    const gchar     *layer_name,
+                    gint             position,
+                    cairo_surface_t *surface,
+                    gdouble          progress_start,
+                    gdouble          progress_scale)
+{
+  gint32 layer;
+
+  layer = gimp_layer_new_from_surface (image, layer_name, surface,
+                                       progress_start,
+                                       progress_start + progress_scale);
+  gimp_image_insert_layer (image, layer, -1, position);
+
+  return layer;
+}
+
+static cairo_surface_t *
+render_page_to_surface (PopplerPage *page,
+                        int          width,
+                        int          height,
+                        double       scale,
+                        gboolean     antialias)
+{
+  cairo_surface_t *surface;
+  cairo_t *cr;
+
+  surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+  cr = cairo_create (surface);
+
+  cairo_save (cr);
+  cairo_translate (cr, 0.0, 0.0);
+
+  if (scale != 1.0)
+    cairo_scale (cr, scale, scale);
+
+  if (! antialias)
+    {
+      cairo_font_options_t *options = cairo_font_options_create ();
+
+      cairo_get_font_options (cr, options);
+      cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_NONE);
+      cairo_set_font_options (cr, options);
+      cairo_font_options_destroy (options);
+
+      cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
+    }
+
+  poppler_page_render (page, cr);
+  cairo_restore (cr);
+
+  cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER);
+  cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
+  cairo_paint (cr);
+
+  cairo_destroy (cr);
+
+  return surface;
+}
+
+#if 0
+
+/* This is currently unused, but we'll have it here in case the military
+   wants it. */
+
+static GdkPixbuf *
+render_page_to_pixbuf (PopplerPage *page,
+                       int          width,
+                       int          height,
+                       double       scale)
+{
+  GdkPixbuf *pixbuf;
+  cairo_surface_t *surface;
+
+  surface = render_page_to_surface (page, width, height, scale);
+  pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0,
+                                        cairo_image_surface_get_width (surface),
+                                        cairo_image_surface_get_height (surface));
+  cairo_surface_destroy (surface);
+
+  return pixbuf;
+}
+
+#endif
+
+static gint32
+load_image (PopplerDocument        *doc,
+            const gchar            *filename,
+            GimpRunMode             run_mode,
+            GimpPageSelectorTarget  target,
+            guint32                 resolution,
+            gboolean                antialias,
+            PdfSelectedPages       *pages)
+{
+  gint32   image_ID = 0;
+  gint32  *images   = NULL;
+  gint     i;
+  gdouble  scale;
+  gdouble  doc_progress = 0;
+
+  if (target == GIMP_PAGE_SELECTOR_TARGET_IMAGES)
+    images = g_new0 (gint32, pages->n_pages);
+
+  gimp_progress_init_printf (_("Opening '%s'"),
+                             gimp_filename_to_utf8 (filename));
+
+  scale = resolution / gimp_unit_get_factor (GIMP_UNIT_POINT);
+
+  /* read the file */
+
+  for (i = 0; i < pages->n_pages; i++)
+    {
+      PopplerPage *page;
+      gchar       *page_label;
+      gdouble      page_width;
+      gdouble      page_height;
+
+      cairo_surface_t *surface;
+      gint             width;
+      gint             height;
+
+      page = poppler_document_get_page (doc, pages->pages[i]);
+
+      poppler_page_get_size (page, &page_width, &page_height);
+      width  = page_width  * scale;
+      height = page_height * scale;
+
+      g_object_get (G_OBJECT (page), "label", &page_label, NULL);
+
+      if (! image_ID)
+        {
+          gchar *name;
+
+          image_ID = gimp_image_new (width, height, GIMP_RGB);
+          gimp_image_undo_disable (image_ID);
+
+          if (target == GIMP_PAGE_SELECTOR_TARGET_IMAGES)
+            name = g_strdup_printf (_("%s-%s"), filename, page_label);
+          else
+            name = g_strdup_printf (_("%s-pages"), filename);
+
+          gimp_image_set_filename (image_ID, name);
+          g_free (name);
+
+          gimp_image_set_resolution (image_ID, resolution, resolution);
+        }
+
+      surface = render_page_to_surface (page, width, height, scale, antialias);
+
+      layer_from_surface (image_ID, page_label, 0, surface,
+                          doc_progress, 1.0 / pages->n_pages);
+
+      g_free (page_label);
+      cairo_surface_destroy (surface);
+
+      doc_progress = (double) (i + 1) / pages->n_pages;
+      gimp_progress_update (doc_progress);
+
+      if (target == GIMP_PAGE_SELECTOR_TARGET_IMAGES)
+        {
+          images[i] = image_ID;
+
+          gimp_image_undo_enable (image_ID);
+          gimp_image_clean_all (image_ID);
+
+          image_ID = 0;
+        }
+    }
+  gimp_progress_update (1.0);
+
+  if (image_ID)
+    {
+      gimp_image_undo_enable (image_ID);
+      gimp_image_clean_all (image_ID);
+    }
+
+  if (target == GIMP_PAGE_SELECTOR_TARGET_IMAGES)
+    {
+      if (run_mode != GIMP_RUN_NONINTERACTIVE)
+        {
+          /* Display images in reverse order.  The last will be
+           * displayed by GIMP itself
+           */
+          for (i = pages->n_pages - 1; i > 0; i--)
+            gimp_display_new (images[i]);
+        }
+
+      image_ID = images[0];
+
+      g_free (images);
+    }
+
+  return image_ID;
+}
+
+static cairo_surface_t *
+get_thumb_surface (PopplerDocument *doc,
+                   gint             page_num,
+                   gint             preferred_size)
+{
+  PopplerPage *page;
+  cairo_surface_t *surface;
+
+  page = poppler_document_get_page (doc, page_num);
+
+  if (! page)
+    return NULL;
+
+  surface = poppler_page_get_thumbnail (page);
+
+  if (! surface)
+    {
+      gdouble width;
+      gdouble height;
+      gdouble scale;
+
+      poppler_page_get_size (page, &width, &height);
+
+      scale = (gdouble) preferred_size / MAX (width, height);
+
+      width  *= scale;
+      height *= scale;
+
+      surface = render_page_to_surface (page, width, height, scale, TRUE);
+    }
+
+  g_object_unref (page);
+
+  return surface;
+}
+
+static GdkPixbuf *
+get_thumb_pixbuf (PopplerDocument *doc,
+                  gint             page_num,
+                  gint             preferred_size)
+{
+  cairo_surface_t *surface;
+  GdkPixbuf *pixbuf;
+
+  surface = get_thumb_surface (doc, page_num, preferred_size);
+  pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0,
+                                        cairo_image_surface_get_width (surface),
+                                        cairo_image_surface_get_height (surface));
+  cairo_surface_destroy (surface);
+
+  return pixbuf;
+}
+
+typedef struct
+{
+  PopplerDocument  *document;
+  GimpPageSelector *selector;
+  gboolean          stop_thumbnailing;
+} ThreadData;
+
+typedef struct
+{
+  GimpPageSelector *selector;
+  gint              page_no;
+  GdkPixbuf        *pixbuf;
+} IdleData;
+
+static gboolean
+idle_set_thumbnail (gpointer data)
+{
+  IdleData *idle_data = data;
+
+  gimp_page_selector_set_page_thumbnail (idle_data->selector,
+                                         idle_data->page_no,
+                                         idle_data->pixbuf);
+  g_object_unref (idle_data->pixbuf);
+  g_free (idle_data);
+
+  return FALSE;
+}
+
+static gpointer
+thumbnail_thread (gpointer data)
+{
+  ThreadData  *thread_data = data;
+  gint         n_pages;
+  gint         i;
+
+  n_pages = poppler_document_get_n_pages (thread_data->document);
+
+  for (i = 0; i < n_pages; i++)
+    {
+      IdleData *idle_data = g_new0 (IdleData, 1);
+
+      idle_data->selector = thread_data->selector;
+      idle_data->page_no  = i;
+
+      /* FIXME get preferred size from somewhere? */
+      idle_data->pixbuf = get_thumb_pixbuf (thread_data->document, i,
+                                            THUMBNAIL_SIZE);
+
+      g_idle_add (idle_set_thumbnail, idle_data);
+
+      if (thread_data->stop_thumbnailing)
+        break;
+    }
+
+  return NULL;
+}
+
+static GimpPDBStatusType
+load_dialog (PopplerDocument  *doc,
+             PdfSelectedPages *pages)
+{
+  GtkWidget  *dialog;
+  GtkWidget  *vbox;
+  GtkWidget  *title;
+  GtkWidget  *selector;
+  GtkWidget  *resolution;
+  GtkWidget  *antialias;
+  GtkWidget  *hbox;
+
+  ThreadData  thread_data;
+  GThread    *thread;
+
+  gint        i;
+  gint        n_pages;
+
+  gdouble     width;
+  gdouble     height;
+
+  gboolean    run;
+
+  dialog = gimp_dialog_new (_("Import from PDF"), PLUG_IN_ROLE,
+                            NULL, 0,
+                            gimp_standard_help_func, LOAD_PROC,
+
+                            _("_Cancel"), GTK_RESPONSE_CANCEL,
+                            _("_Import"), GTK_RESPONSE_OK,
+
+                            NULL);
+
+  gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
+                                           GTK_RESPONSE_OK,
+                                           GTK_RESPONSE_CANCEL,
+                                           -1);
+
+  gimp_window_set_transient (GTK_WINDOW (dialog));
+
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+  gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
+                      vbox, TRUE, TRUE, 0);
+  gtk_widget_show (vbox);
+
+  /* Title */
+  title = gimp_prop_label_new (G_OBJECT (doc), "title");
+  gtk_label_set_ellipsize (GTK_LABEL (title), PANGO_ELLIPSIZE_END);
+  gtk_box_pack_start (GTK_BOX (vbox), title, FALSE, FALSE, 0);
+  gtk_widget_show (title);
+
+  /* Page Selector */
+  selector = gimp_page_selector_new ();
+  gtk_widget_set_size_request (selector, 380, 360);
+  gtk_box_pack_start (GTK_BOX (vbox), selector, TRUE, TRUE, 0);
+  gtk_widget_show (selector);
+
+  n_pages = poppler_document_get_n_pages (doc);
+
+  if (n_pages <= 0)
+    {
+      g_message (_("Error getting number of pages from the given PDF file."));
+      return GIMP_PDB_EXECUTION_ERROR;
+    }
+
+  gimp_page_selector_set_n_pages (GIMP_PAGE_SELECTOR (selector), n_pages);
+  gimp_page_selector_set_target (GIMP_PAGE_SELECTOR (selector),
+                                 loadvals.target);
+
+  for (i = 0; i < n_pages; i++)
+    {
+      PopplerPage     *page;
+      gchar           *label;
+
+      page = poppler_document_get_page (doc, i);
+      g_object_get (G_OBJECT (page), "label", &label, NULL);
+
+      gimp_page_selector_set_page_label (GIMP_PAGE_SELECTOR (selector), i,
+                                         label);
+
+      if (i == 0)
+        poppler_page_get_size (page, &width, &height);
+
+      g_object_unref (page);
+      g_free (label);
+    }
+  /* Since selecting none will be equivalent to selecting all, this is
+   * only useful as a feedback for the default behavior of selecting all
+   * pages. */
+  gimp_page_selector_select_all (GIMP_PAGE_SELECTOR (selector));
+
+  g_signal_connect_swapped (selector, "activate",
+                            G_CALLBACK (gtk_window_activate_default),
+                            dialog);
+
+  thread_data.document          = doc;
+  thread_data.selector          = GIMP_PAGE_SELECTOR (selector);
+  thread_data.stop_thumbnailing = FALSE;
+
+  thread = g_thread_new ("thumbnailer", thumbnail_thread, &thread_data);
+
+  /* Resolution */
+
+  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+
+  resolution = gimp_resolution_entry_new (_("_Width (pixels):"), width,
+                                          _("_Height (pixels):"), height,
+                                          GIMP_UNIT_POINT,
+                                          _("_Resolution:"),
+                                          loadvals.resolution, GIMP_UNIT_INCH);
+
+  gtk_box_pack_start (GTK_BOX (hbox), resolution, FALSE, FALSE, 0);
+  gtk_widget_show (resolution);
+
+  g_signal_connect (resolution, "x-changed",
+                    G_CALLBACK (gimp_resolution_entry_update_x_in_dpi),
+                    &loadvals.resolution);
+
+  /* Antialiasing*/
+  antialias = gtk_check_button_new_with_mnemonic (_("Use _Anti-aliasing"));
+  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (antialias), loadvals.antialias);
+  gtk_box_pack_start (GTK_BOX (vbox), antialias, FALSE, FALSE, 0);
+
+  g_signal_connect (antialias, "toggled",
+                    G_CALLBACK (gimp_toggle_button_update), &loadvals.antialias);
+  gtk_widget_show (antialias);
+
+  /* Setup done; display the dialog */
+  gtk_widget_show (dialog);
+
+  /* run the dialog */
+  run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
+
+  loadvals.target =
+    gimp_page_selector_get_target (GIMP_PAGE_SELECTOR (selector));
+
+  pages->pages =
+    gimp_page_selector_get_selected_pages (GIMP_PAGE_SELECTOR (selector),
+                                           &pages->n_pages);
+
+  /* select all if none selected */
+  if (pages->n_pages == 0)
+    {
+      gimp_page_selector_select_all (GIMP_PAGE_SELECTOR (selector));
+
+      pages->pages =
+        gimp_page_selector_get_selected_pages (GIMP_PAGE_SELECTOR (selector),
+                                               &pages->n_pages);
+    }
+
+  /* cleanup */
+  thread_data.stop_thumbnailing = TRUE;
+  g_thread_join (thread);
+
+  return run ? GIMP_PDB_SUCCESS : GIMP_PDB_CANCEL;
+}
+
+
+/**
+ ** code for GimpResolutionEntry widget, formerly in libgimpwidgets
+ **/
+
+static guint gimp_resolution_entry_signals[LAST_SIGNAL] = { 0 };
+
+static GtkTableClass *parent_class = NULL;
+
+
+GType
+gimp_resolution_entry_get_type (void)
+{
+  static GType gre_type = 0;
+
+  if (! gre_type)
+    {
+      const GTypeInfo gre_info =
+      {
+        sizeof (GimpResolutionEntryClass),
+        (GBaseInitFunc) NULL,
+        (GBaseFinalizeFunc) NULL,
+        (GClassInitFunc) gimp_resolution_entry_class_init,
+        NULL,                /* class_finalize */
+        NULL,                /* class_data     */
+        sizeof (GimpResolutionEntry),
+        0,              /* n_preallocs    */
+        (GInstanceInitFunc) gimp_resolution_entry_init,
+      };
+
+      gre_type = g_type_register_static (GTK_TYPE_TABLE,
+                                         "GimpResolutionEntry",
+                                         &gre_info, 0);
+    }
+
+  return gre_type;
+}
+
+static void
+gimp_resolution_entry_class_init (GimpResolutionEntryClass *klass)
+{
+  parent_class = g_type_class_peek_parent (klass);
+
+  gimp_resolution_entry_signals[HEIGHT_CHANGED] =
+    g_signal_new ("height-changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpResolutionEntryClass, value_changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
+  gimp_resolution_entry_signals[WIDTH_CHANGED] =
+    g_signal_new ("width-changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpResolutionEntryClass, value_changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
+  gimp_resolution_entry_signals[X_CHANGED] =
+    g_signal_new ("x-changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpResolutionEntryClass, value_changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
+  gimp_resolution_entry_signals[Y_CHANGED] =
+    g_signal_new ("y-changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpResolutionEntryClass, refval_changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
+  gimp_resolution_entry_signals[UNIT_CHANGED] =
+    g_signal_new ("unit-changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpResolutionEntryClass, unit_changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
+  klass->value_changed  = NULL;
+  klass->refval_changed = NULL;
+  klass->unit_changed   = NULL;
+}
+
+static void
+gimp_resolution_entry_init (GimpResolutionEntry *gre)
+{
+  gre->unitmenu = NULL;
+  gre->unit     = GIMP_UNIT_INCH;
+
+  gtk_table_set_col_spacings (GTK_TABLE (gre), 4);
+  gtk_table_set_row_spacings (GTK_TABLE (gre), 2);
+}
+
+static void
+gimp_resolution_entry_field_init (GimpResolutionEntry      *gre,
+                                  GimpResolutionEntryField *gref,
+                                  GimpResolutionEntryField *corresponding,
+                                  guint                     changed_signal,
+                                  gdouble                   initial_val,
+                                  GimpUnit                  initial_unit,
+                                  gboolean                  size,
+                                  gint                      spinbutton_width)
+{
+  gint digits;
+
+  g_return_if_fail (GIMP_IS_RESOLUTION_ENTRY (gre));
+
+  gref->gre               = gre;
+  gref->corresponding     = corresponding;
+  gref->changed_signal    = gimp_resolution_entry_signals[changed_signal];
+
+  if (size)
+    {
+      gref->value         = initial_val /
+                            gimp_unit_get_factor (initial_unit) *
+                            corresponding->value *
+                            gimp_unit_get_factor (gre->unit);
+
+      gref->phy_size      = initial_val /
+                            gimp_unit_get_factor (initial_unit);
+    }
+  else
+    {
+      gref->value         = initial_val;
+    }
+
+  gref->min_value         = GIMP_MIN_RESOLUTION;
+  gref->max_value         = GIMP_MAX_RESOLUTION;
+  gref->adjustment        = NULL;
+
+  gref->stop_recursion    = 0;
+
+  gref->size              = size;
+
+  if (size)
+    {
+      gref->label = g_object_new (GTK_TYPE_LABEL,
+                                  "xalign", 0.0,
+                                  "yalign", 0.5,
+                                  NULL);
+      gimp_label_set_attributes (GTK_LABEL (gref->label),
+                                 PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
+                                 -1);
+
+      gimp_resolution_entry_format_label (gre, gref->label, gref->phy_size);
+    }
+
+  digits = size ? 0 : MIN (gimp_unit_get_digits (initial_unit), 5) + 1;
+
+  gref->adjustment = (GtkAdjustment *)
+    gtk_adjustment_new (gref->value,
+                        gref->min_value,
+                        gref->max_value,
+                        1.0, 10.0, 0.0);
+  gref->spinbutton = gimp_spin_button_new (gref->adjustment,
+                                           1.0, digits);
+  gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (gref->spinbutton), TRUE);
+
+  if (spinbutton_width > 0)
+    {
+      if (spinbutton_width < 17)
+        gtk_entry_set_width_chars (GTK_ENTRY (gref->spinbutton),
+                                   spinbutton_width);
+      else
+        gtk_widget_set_size_request (gref->spinbutton,
+                                     spinbutton_width, -1);
+    }
+}
+
+/**
+ * gimp_resolution_entry_new:
+ * @width_label:       Optional label for the width control.
+ * @width:             Width of the item, specified in terms of @size_unit.
+ * @height_label:      Optional label for the height control.
+ * @height:            Height of the item, specified in terms of @size_unit.
+ * @size_unit:         Unit used to specify the width and height.
+ * @res_label:         Optional label for the resolution entry.
+ * @initial_res:       The initial resolution.
+ * @initial_unit:      The initial unit.
+ *
+ * Creates a new #GimpResolutionEntry widget.
+ *
+ * The #GimpResolutionEntry is derived from #GtkTable and will have
+ * an empty border of one cell width on each side plus an empty column left
+ * of the #GimpUnitMenu to allow the caller to add labels or other widgets.
+ *
+ * A #GimpChainButton is displayed if independent is set to %TRUE.
+ *
+ * Returns: A pointer to the new #GimpResolutionEntry widget.
+ **/
+GtkWidget *
+gimp_resolution_entry_new (const gchar *width_label,
+                           gdouble      width,
+                           const gchar *height_label,
+                           gdouble      height,
+                           GimpUnit     size_unit,
+                           const gchar *res_label,
+                           gdouble      initial_res,
+                           GimpUnit     initial_unit)
+{
+  GimpResolutionEntry *gre;
+  GtkTreeModel        *model;
+
+  gre = g_object_new (GIMP_TYPE_RESOLUTION_ENTRY, NULL);
+
+  gre->unit = initial_unit;
+
+  gtk_table_resize (GTK_TABLE (gre), 4, 4);
+
+  gimp_resolution_entry_field_init (gre, &gre->x,
+                                    &gre->width,
+                                    X_CHANGED,
+                                    initial_res, initial_unit,
+                                    FALSE, 0);
+
+  gtk_table_attach_defaults (GTK_TABLE (gre), gre->x.spinbutton,
+                             1, 2,
+                             3, 4);
+
+  g_signal_connect (gre->x.adjustment, "value-changed",
+                    G_CALLBACK (gimp_resolution_entry_value_callback),
+                    &gre->x);
+
+  gtk_widget_show (gre->x.spinbutton);
+
+  gre->unitmenu = gimp_unit_combo_box_new ();
+  model = gtk_combo_box_get_model (GTK_COMBO_BOX (gre->unitmenu));
+  gimp_unit_store_set_has_pixels (GIMP_UNIT_STORE (model), FALSE);
+  gimp_unit_store_set_has_percent (GIMP_UNIT_STORE (model), FALSE);
+  g_object_set (model,
+                "short-format", _("pixels/%a"),
+                "long-format",  _("pixels/%a"),
+                NULL);
+  gimp_unit_combo_box_set_active (GIMP_UNIT_COMBO_BOX (gre->unitmenu),
+                                  initial_unit);
+
+  gtk_table_attach (GTK_TABLE (gre), gre->unitmenu,
+                    3, 4, 3, 4,
+                    GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
+  g_signal_connect (gre->unitmenu, "changed",
+                    G_CALLBACK (gimp_resolution_entry_unit_callback),
+                    gre);
+  gtk_widget_show (gre->unitmenu);
+
+  gimp_resolution_entry_field_init (gre, &gre->width,
+                                    &gre->x,
+                                    WIDTH_CHANGED,
+                                    width, size_unit,
+                                    TRUE, 0);
+
+  gtk_table_attach_defaults (GTK_TABLE (gre), gre->width.spinbutton,
+                             1, 2,
+                             1, 2);
+
+  gtk_table_attach_defaults (GTK_TABLE (gre), gre->width.label,
+                             3, 4,
+                             1, 2);
+
+  g_signal_connect (gre->width.adjustment, "value-changed",
+                    G_CALLBACK (gimp_resolution_entry_value_callback),
+                    &gre->width);
+
+  gtk_widget_show (gre->width.spinbutton);
+  gtk_widget_show (gre->width.label);
+
+  gimp_resolution_entry_field_init (gre, &gre->height, &gre->x,
+                                    HEIGHT_CHANGED,
+                                    height, size_unit,
+                                    TRUE, 0);
+
+  gtk_table_attach_defaults (GTK_TABLE (gre), gre->height.spinbutton,
+                             1, 2, 2, 3);
+
+  gtk_table_attach_defaults (GTK_TABLE (gre), gre->height.label,
+                             3, 4, 2, 3);
+
+  g_signal_connect (gre->height.adjustment, "value-changed",
+                    G_CALLBACK (gimp_resolution_entry_value_callback),
+                    &gre->height);
+
+  gtk_widget_show (gre->height.spinbutton);
+  gtk_widget_show (gre->height.label);
+
+  if (width_label)
+    gimp_resolution_entry_attach_label (gre, width_label,  1, 0, 0.0);
+
+  if (height_label)
+    gimp_resolution_entry_attach_label (gre, height_label, 2, 0, 0.0);
+
+  if (res_label)
+    gimp_resolution_entry_attach_label (gre, res_label,    3, 0, 0.0);
+
+  return GTK_WIDGET (gre);
+}
+
+/**
+ * gimp_resolution_entry_attach_label:
+ * @gre:       The #GimpResolutionEntry you want to add a label to.
+ * @text:      The text of the label.
+ * @row:       The row where the label will be attached.
+ * @column:    The column where the label will be attached.
+ * @alignment: The horizontal alignment of the label.
+ *
+ * Attaches a #GtkLabel to the #GimpResolutionEntry (which is a #GtkTable).
+ *
+ * Returns: A pointer to the new #GtkLabel widget.
+ **/
+GtkWidget *
+gimp_resolution_entry_attach_label (GimpResolutionEntry *gre,
+                                    const gchar         *text,
+                                    gint                 row,
+                                    gint                 column,
+                                    gfloat               alignment)
+{
+  GtkWidget *label;
+
+  g_return_val_if_fail (GIMP_IS_RESOLUTION_ENTRY (gre), NULL);
+  g_return_val_if_fail (text != NULL, NULL);
+
+  label = gtk_label_new_with_mnemonic (text);
+
+  if (column == 0)
+    {
+      GList *children;
+      GList *list;
+
+      children = gtk_container_get_children (GTK_CONTAINER (gre));
+
+      for (list = children; list; list = g_list_next (list))
+        {
+          GtkWidget *child = list->data;
+          gint       left_attach;
+          gint       top_attach;
+
+          gtk_container_child_get (GTK_CONTAINER (gre), child,
+                                   "left-attach", &left_attach,
+                                   "top-attach",  &top_attach,
+                                   NULL);
+
+          if (left_attach == 1 && top_attach == row)
+            {
+              gtk_label_set_mnemonic_widget (GTK_LABEL (label), child);
+              break;
+            }
+        }
+
+      g_list_free (children);
+    }
+
+  gtk_label_set_xalign (GTK_LABEL (label), alignment);
+
+  gtk_table_attach (GTK_TABLE (gre), label, column, column+1, row, row+1,
+                    GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
+  gtk_widget_show (label);
+
+  return label;
+}
+
+/**
+ * gimp_resolution_entry_get_x_in_dpi;
+ * @gre:   The #GimpResolutionEntry you want to know the resolution of.
+ *
+ * Returns the X resolution of the #GimpResolutionEntry in pixels per inch.
+ **/
+gdouble
+gimp_resolution_entry_get_x_in_dpi (GimpResolutionEntry *gre)
+{
+  g_return_val_if_fail (GIMP_IS_RESOLUTION_ENTRY (gre), 0);
+
+  /* dots_in_one_unit * units_in_one_inch -> dpi */
+  return gre->x.value * gimp_unit_get_factor (gre->unit);
+}
+
+/**
+ * gimp_resolution_entry_get_y_in_dpi;
+ * @gre:   The #GimpResolutionEntry you want to know the resolution of.
+ *
+ * Returns the Y resolution of the #GimpResolutionEntry in pixels per inch.
+ **/
+gdouble
+gimp_resolution_entry_get_y_in_dpi (GimpResolutionEntry *gre)
+{
+  g_return_val_if_fail (GIMP_IS_RESOLUTION_ENTRY (gre), 0);
+
+  return gre->y.value * gimp_unit_get_factor (gre->unit);
+}
+
+
+static void
+gimp_resolution_entry_update_value (GimpResolutionEntryField *gref,
+                                    gdouble                   value)
+{
+  if (gref->stop_recursion > 0)
+    return;
+
+  gref->value = value;
+
+  gref->stop_recursion++;
+
+  if (gref->size)
+    gimp_resolution_entry_update_value (gref->corresponding,
+                                        gref->value /
+                                          gref->phy_size /
+                                          gimp_unit_get_factor (gref->gre->unit));
+  else
+    {
+      gdouble factor = gimp_unit_get_factor (gref->gre->unit);
+
+      gimp_resolution_entry_update_value (&gref->gre->width,
+                                          gref->value *
+                                          gref->gre->width.phy_size *
+                                          factor);
+
+      gimp_resolution_entry_update_value (&gref->gre->height,
+                                          gref->value *
+                                          gref->gre->height.phy_size *
+                                          factor);
+    }
+
+  gtk_adjustment_set_value (gref->adjustment, value);
+
+  gref->stop_recursion--;
+
+  g_signal_emit (gref->gre, gref->changed_signal, 0);
+}
+
+static void
+gimp_resolution_entry_value_callback (GtkWidget *widget,
+                                      gpointer   data)
+{
+  GimpResolutionEntryField *gref = (GimpResolutionEntryField *) data;
+  gdouble                   new_value;
+
+  new_value = gtk_adjustment_get_value (GTK_ADJUSTMENT (widget));
+
+  if (gref->value != new_value)
+    gimp_resolution_entry_update_value (gref, new_value);
+}
+
+static void
+gimp_resolution_entry_update_unit (GimpResolutionEntry *gre,
+                                   GimpUnit             unit)
+{
+  GimpUnit  old_unit;
+  gint      digits;
+  gdouble   factor;
+
+  old_unit  = gre->unit;
+  gre->unit = unit;
+
+  digits = (gimp_unit_get_digits (GIMP_UNIT_INCH) -
+            gimp_unit_get_digits (unit));
+
+  gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gre->x.spinbutton),
+                              MAX (3 + digits, 3));
+
+  factor = gimp_unit_get_factor (old_unit) / gimp_unit_get_factor (unit);
+
+  gre->x.min_value *= factor;
+  gre->x.max_value *= factor;
+  gre->x.value     *= factor;
+
+  gtk_adjustment_set_value (GTK_ADJUSTMENT (gre->x.adjustment),
+                            gre->x.value);
+
+  gimp_resolution_entry_format_label (gre,
+                                      gre->width.label, gre->width.phy_size);
+  gimp_resolution_entry_format_label (gre,
+                                      gre->height.label, gre->height.phy_size);
+
+  g_signal_emit (gre, gimp_resolution_entry_signals[UNIT_CHANGED], 0);
+}
+
+static void
+gimp_resolution_entry_unit_callback (GtkWidget           *widget,
+                                     GimpResolutionEntry *gre)
+{
+  GimpUnit new_unit;
+
+  new_unit = gimp_unit_combo_box_get_active (GIMP_UNIT_COMBO_BOX (widget));
+
+  if (gre->unit != new_unit)
+    gimp_resolution_entry_update_unit (gre, new_unit);
+}
+
+/**
+ * gimp_resolution_entry_update_x_in_dpi:
+ * @gre: the #GimpResolutionEntry
+ * @data: a pointer to a gdouble
+ *
+ * Convenience function to set a double to the X resolution, suitable
+ * for use as a signal callback.
+ */
+void
+gimp_resolution_entry_update_x_in_dpi (GimpResolutionEntry *gre,
+                                       gpointer             data)
+{
+  gdouble *val;
+
+  g_return_if_fail (gre  != NULL);
+  g_return_if_fail (data != NULL);
+  g_return_if_fail (GIMP_IS_RESOLUTION_ENTRY (gre));
+
+  val = (gdouble *) data;
+
+  *val = gimp_resolution_entry_get_x_in_dpi (gre);
+}
+
+/**
+ * gimp_resolution_entry_update_y_in_dpi:
+ * @gre: the #GimpResolutionEntry
+ * @data: a pointer to a gdouble
+ *
+ * Convenience function to set a double to the Y resolution, suitable
+ * for use as a signal callback.
+ */
+void
+gimp_resolution_entry_update_y_in_dpi (GimpResolutionEntry *gre,
+                                       gpointer             data)
+{
+  gdouble *val;
+
+  g_return_if_fail (gre  != NULL);
+  g_return_if_fail (data != NULL);
+  g_return_if_fail (GIMP_IS_RESOLUTION_ENTRY (gre));
+
+  val = (gdouble *) data;
+
+  *val = gimp_resolution_entry_get_y_in_dpi (gre);
+}
+
+static void
+gimp_resolution_entry_format_label (GimpResolutionEntry *gre,
+                                    GtkWidget           *label,
+                                    gdouble              size)
+{
+  gchar *format = g_strdup_printf ("%%.%df %%s",
+                                   gimp_unit_get_digits (gre->unit));
+  gchar *text = g_strdup_printf (format,
+                                 size * gimp_unit_get_factor (gre->unit),
+                                 gimp_unit_get_plural (gre->unit));
+  g_free (format);
+
+  gtk_label_set_text (GTK_LABEL (label), text);
+  g_free (text);
+}