file-pdf-load.c 58.1 KB
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/* GIMP - The GNU Image Manipulation Program
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 *
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 * file-pdf-load.c - PDF file loader
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 *
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 * Copyright (C) 2005 Nathan Summers
 *
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 * Some code in render_page_to_surface() borrowed from
 * poppler.git/glib/poppler-page.cc.
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 3 of the License, or
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 * (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
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 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
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 */

#include "config.h"

#include <string.h>

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

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#undef GTK_DISABLE_SINGLE_INCLUDES
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#include <poppler.h>
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#define GTK_DISABLE_SINGLE_INCLUDES
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#include "libgimp/stdplugins-intl.h"

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#define LOAD_PROC       "file-pdf-load"
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#define LOAD2_PROC      "file-pdf-load2"
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#define LOAD_THUMB_PROC "file-pdf-load-thumb"
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#define PLUG_IN_BINARY  "file-pdf-load"
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#define PLUG_IN_ROLE    "gimp-file-pdf-load"
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#define THUMBNAIL_SIZE  128

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#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");
}
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/* Structs for the load dialog */
typedef struct
{
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  GimpPageSelectorTarget  target;
  gdouble                 resolution;
  gboolean                antialias;
  gchar                  *PDF_password;
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} PdfLoadVals;

static PdfLoadVals loadvals =
{
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  GIMP_PAGE_SELECTOR_TARGET_LAYERS,
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  100.00,  /* 100 dpi   */
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  TRUE,
  NULL
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};

typedef struct
{
  gint  n_pages;
  gint *pages;
} PdfSelectedPages;

/* Declare local functions */
static void              query             (void);
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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,
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                                            gboolean                antialias,
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                                            PdfSelectedPages       *pages);

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static GimpPDBStatusType load_dialog       (PopplerDocument        *doc,
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                                            PdfSelectedPages       *pages);

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static PopplerDocument * open_document     (const gchar            *filename,
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                                            const gchar            *PDF_password,
                                            GimpRunMode             run_mode,
                                            GError                **error);
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static cairo_surface_t * get_thumb_surface (PopplerDocument        *doc,
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                                            gint                    page,
                                            gint                    preferred_size);

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static GdkPixbuf *       get_thumb_pixbuf  (PopplerDocument        *doc,
                                            gint                    page,
                                            gint                    preferred_size);

static gint32            layer_from_surface (gint32                  image,
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                                             const gchar            *layer_name,
                                             gint                    position,
                                             cairo_surface_t        *surface,
                                             gdouble                 progress_start,
                                             gdouble                 progress_scale);
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/**
 ** 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))


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typedef struct _GimpResolutionEntry       GimpResolutionEntry;
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typedef struct _GimpResolutionEntryClass  GimpResolutionEntryClass;

typedef struct _GimpResolutionEntryField  GimpResolutionEntryField;

struct _GimpResolutionEntryField
{
  GimpResolutionEntry      *gre;
  GimpResolutionEntryField *corresponding;

  gboolean       size;

  GtkWidget     *label;

  guint          changed_signal;

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  GtkAdjustment *adjustment;
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  GtkWidget     *spinbutton;

  gdouble        phy_size;

  gdouble        value;
  gdouble        min_value;
  gdouble        max_value;

  gint           stop_recursion;
};


struct _GimpResolutionEntry
{
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  GtkGrid                   parent_instance;
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  GimpUnit                  size_unit;
  GimpUnit                  unit;

  GtkWidget                *unitmenu;
  GtkWidget                *chainbutton;

  GimpResolutionEntryField  width;
  GimpResolutionEntryField  height;
  GimpResolutionEntryField  x;
  GimpResolutionEntryField  y;

};

struct _GimpResolutionEntryClass
{
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  GtkGridClass   parent_class;
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  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,
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                                                const gchar   *res_label,
                                                gdouble        initial_res,
                                                GimpUnit       initial_unit);
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GtkWidget * gimp_resolution_entry_attach_label (GimpResolutionEntry *gre,
                                                const gchar         *text,
                                                gint                 row,
                                                gint                 column,
                                                gfloat               alignment);

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gdouble     gimp_resolution_entry_get_x_in_dpi (GimpResolutionEntry *gre);
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gdouble     gimp_resolution_entry_get_y_in_dpi (GimpResolutionEntry *gre);
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/* 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);
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static void   gimp_resolution_entry_value_callback  (GtkAdjustment       *adjustment,
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                                                     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);

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static void   gimp_resolution_entry_format_label (GimpResolutionEntry *gre,
                                                  GtkWidget           *label,
                                                  gdouble              size);
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/**
 ** end of gimpresolutionentry stuff
 ** the actual code can be found at the end of this file
 **/
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const GimpPlugInInfo PLUG_IN_INFO =
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{
  NULL,  /* init_proc  */
  NULL,  /* quit_proc  */
  query, /* query_proc */
  run,   /* run_proc   */
};


MAIN ()

static void
query (void)
{
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  static const GimpParamDef load_args[] =
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  {
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    { GIMP_PDB_INT32,     "run-mode",     "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }"     },
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    { GIMP_PDB_STRING,    "filename",     "The name of the file to load"     },
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    { GIMP_PDB_STRING,    "raw-filename", "The name entered"                 }
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  };
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  static const GimpParamDef load2_args[] =
  {
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    { 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"                      },
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    /* XXX: Nice to have API at some point, but needs work
    { GIMP_PDB_INT32,     "resolution",   "Resolution to rasterize to (dpi)" },
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    { GIMP_PDB_INT32,     "antialiasing", "Use anti-aliasing" }, */
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  };

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  static const GimpParamDef load_return_vals[] =
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  {
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    { GIMP_PDB_IMAGE,     "image",        "Output image" }
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  };

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  static const GimpParamDef thumb_args[] =
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  {
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    { GIMP_PDB_STRING,    "filename",     "The name of the file to load"  },
    { GIMP_PDB_INT32,     "thumb-size",   "Preferred thumbnail size"      }
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  };

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  static const GimpParamDef thumb_return_vals[] =
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  {
    { GIMP_PDB_IMAGE,  "image",        "Thumbnail image"               },
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    { GIMP_PDB_INT32,  "image-width",  "Width of full-sized image"     },
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    { 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"               }
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  };

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  gimp_install_procedure (LOAD_PROC,
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                          "Load file in PDF format",
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                          "Loads files in Adobe's Portable Document Format. "
                          "PDF is designed to be easily processed by a variety "
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                          "of different platforms, and is a distant cousin of "
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                          "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.",
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                          "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);

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  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"
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                          "This procedure adds extra parameters to "
                          "file-pdf-load to open encrypted PDF and to allow "
                          "multiple page loading.",
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                          "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,
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                                    "pdf",
                                    "",
                                    "0, string,%PDF-");

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  gimp_install_procedure (LOAD_THUMB_PROC,
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                          "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);

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  gimp_register_thumbnail_loader (LOAD2_PROC, LOAD_THUMB_PROC);
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}

static void
run (const gchar      *name,
     gint              nparams,
     const GimpParam  *param,
     gint             *nreturn_vals,
     GimpParam       **return_vals)
{
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  static GimpParam  values[7];
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  GimpRunMode       run_mode;
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  GimpPDBStatusType status   = GIMP_PDB_SUCCESS;
  gint32            image_ID = -1;
  PopplerDocument  *doc      = NULL;
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  GError           *error    = NULL;
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  run_mode = param[0].data.d_int32;

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  INIT_I18N ();
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  *nreturn_vals = 1;
  *return_vals  = values;

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

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  if (strcmp (name, LOAD_PROC) == 0 || strcmp (name, LOAD2_PROC) == 0)
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    {
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      PdfSelectedPages pages = { 0, NULL };
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      switch (run_mode)
        {
        case GIMP_RUN_INTERACTIVE:
          /* Possibly retrieve last settings */
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          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);
            }
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          gimp_ui_init (PLUG_IN_BINARY, FALSE);
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          doc = open_document (param[1].data.d_string,
                               loadvals.PDF_password,
                               run_mode, &error);
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          if (!doc)
            {
              status = GIMP_PDB_EXECUTION_ERROR;
              break;
            }

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          status = load_dialog (doc, &pages);
          if (status == GIMP_PDB_SUCCESS)
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            {
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              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));
                }
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            }
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          break;

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        case GIMP_RUN_WITH_LAST_VALS:
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          /* FIXME: implement last vals mode */
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          status = GIMP_PDB_EXECUTION_ERROR;
          break;
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        case GIMP_RUN_NONINTERACTIVE:
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          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);
            }
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          if (doc)
            {
              PopplerPage *test_page = poppler_document_get_page (doc, 0);

              if (test_page)
                {
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                  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;
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                                  g_set_error (&error, GIMP_PLUGIN_PDF_LOAD_ERROR, 0,
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                                               /* 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.
                                                */
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                                               ngettext ("PDF document '%1$s' has %3$d page. Page %2$d is out of range.",
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                                                         "PDF document '%1$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);
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                                  break;
                                }
                              else
                                {
                                  pages.pages[i] = param[5].data.d_int32array[i];
                                }
                            }
                        }
                      g_object_unref (test_page);
                    }
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                }
              else
                {
                  status = GIMP_PDB_EXECUTION_ERROR;
                  g_object_unref (doc);
                }
            }
          else
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            {
              status = GIMP_PDB_EXECUTION_ERROR;
            }
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          break;
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        }

      if (status == GIMP_PDB_SUCCESS)
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        {
          image_ID = load_image (doc, param[1].data.d_string,
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                                 run_mode,
                                 loadvals.target,
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                                 loadvals.resolution,
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                                 loadvals.antialias,
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                                 &pages);
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          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;
            }
        }
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      if (doc)
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        g_object_unref (doc);
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      g_free (pages.pages);
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    }
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  else if (strcmp (name, LOAD_THUMB_PROC) == 0)
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    {
      if (nparams < 2)
        {
          status = GIMP_PDB_CALLING_ERROR;
        }
      else
        {
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          gdouble          width     = 0;
          gdouble          height    = 0;
          gdouble          scale;
          gint32           image     = -1;
          gint             num_pages = 0;
          cairo_surface_t *surface   = NULL;
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          /* Possibly retrieve last settings */
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          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);
            }
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          doc = open_document (param[0].data.d_string,
                               loadvals.PDF_password,
                               run_mode, &error);
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          if (doc)
            {
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              PopplerPage *page = poppler_document_get_page (doc, 0);
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              if (page)
                {
                  poppler_page_get_size (page, &width, &height);
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                  g_object_unref (page);
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                }
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              num_pages = poppler_document_get_n_pages (doc);

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              surface = get_thumb_surface (doc, 0, param[1].data.d_int32);
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              g_object_unref (doc);
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            }

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          if (surface)
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            {
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              image = gimp_image_new (cairo_image_surface_get_width (surface),
                                      cairo_image_surface_get_height (surface),
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                                      GIMP_RGB);
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              gimp_image_undo_disable (image);
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              layer_from_surface (image, "thumbnail", 0, surface, 0.0, 1.0);
              cairo_surface_destroy (surface);
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              gimp_image_undo_enable (image);
              gimp_image_clean_all (image);
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            }

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          scale = loadvals.resolution / gimp_unit_get_factor (GIMP_UNIT_POINT);
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          width  *= scale;
          height *= scale;

          if (image != -1)
            {
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              *nreturn_vals = 6;
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              values[1].type         = GIMP_PDB_IMAGE;
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              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;
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              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;
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            }
          else
            {
              status = GIMP_PDB_EXECUTION_ERROR;
            }
        }
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    }
  else
    {
      status = GIMP_PDB_CALLING_ERROR;
    }

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  if (status != GIMP_PDB_SUCCESS && error)
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    {
      *nreturn_vals = 2;
      values[1].type          = GIMP_PDB_STRING;
      values[1].data.d_string = error->message;
    }

661 662 663 664
  values[0].data.d_status = status;
}

static PopplerDocument*
665
open_document (const gchar  *filename,
666 667 668
               const gchar  *PDF_password,
               GimpRunMode   run_mode,
               GError      **load_error)
669 670
{
  PopplerDocument *doc;
671
  GMappedFile     *mapped_file;
672
  GError          *error = NULL;
673

674
  mapped_file = g_mapped_file_new (filename, FALSE, &error);
675

676
  if (! mapped_file)
677
    {
678
      g_set_error (load_error, GIMP_PLUGIN_PDF_LOAD_ERROR, 0,
679
                   _("Could not load '%s': %s"),
680 681
                   gimp_filename_to_utf8 (filename), error->message);
      g_error_free (error);
682 683
      return NULL;
    }
684

685 686
  doc = poppler_document_new_from_data (g_mapped_file_get_contents (mapped_file),
                                        g_mapped_file_get_length (mapped_file),
687
                                        PDF_password,
688
                                        &error);
689

690
  if (run_mode == GIMP_RUN_INTERACTIVE)
691
    {
692 693
      GtkWidget *label;

694
      label = gtk_label_new (_("PDF is password protected, please input the password:"));
695 696 697
      while (error                          &&
             error->domain == POPPLER_ERROR &&
             error->code == POPPLER_ERROR_ENCRYPTED)
698
        {
699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737
          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_data (g_mapped_file_get_contents (mapped_file),
                                                    g_mapped_file_get_length (mapped_file),
                                                    gtk_entry_get_text (GTK_ENTRY (entry)),
                                                    &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;
            }
738
        }
739
      gtk_widget_destroy (label);
740 741
    }

742 743 744 745
  /* 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.
   */
746
  if (! doc)
747
    {
748
      g_set_error (load_error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
749
                   _("Could not load '%s': %s"),
750 751 752
                   gimp_filename_to_utf8 (filename),
                   error->message);
      g_error_free (error);
753 754 755 756 757 758
      return NULL;
    }

  return doc;
}

759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779
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 = 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,
780 781
                        double       scale,
                        gboolean     antialias)
782 783 784 785 786 787 788 789 790 791 792 793 794
{
  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);

795 796
  if (! antialias)
    {
797
      cairo_font_options_t *options = cairo_font_options_create ();
798 799 800 801 802

      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);
803 804

      cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
805 806
    }

807 808 809 810 811 812 813 814
  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);
815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836

  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));
837 838 839 840 841
  cairo_surface_destroy (surface);

  return pixbuf;
}

842 843
#endif

844
static gint32
845 846 847 848 849
load_image (PopplerDocument        *doc,
            const gchar            *filename,
            GimpRunMode             run_mode,
            GimpPageSelectorTarget  target,
            guint32                 resolution,
850
            gboolean                antialias,
851
            PdfSelectedPages       *pages)
852
{
853 854 855 856 857 858 859 860
  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);
861

862
  gimp_progress_init_printf (_("Opening '%s'"),
863
                             gimp_filename_to_utf8 (filename));
864 865 866 867 868 869

  scale = resolution / gimp_unit_get_factor (GIMP_UNIT_POINT);

  /* read the file */

  for (i = 0; i < pages->n_pages; i++)
870
    {
871 872 873 874
      PopplerPage *page;
      gchar       *page_label;
      gdouble      page_width;
      gdouble      page_height;
875

876 877 878
      cairo_surface_t *surface;
      gint             width;
      gint             height;
879 880

      page = poppler_document_get_page (doc, pages->pages[i]);
881

882 883 884
      poppler_page_get_size (page, &page_width, &page_height);
      width  = page_width  * scale;
      height = page_height * scale;
885

886 887 888
      g_object_get (G_OBJECT (page), "label", &page_label, NULL);

      if (! image_ID)
889
        {
890 891
          gchar *name;

892 893
          image_ID = gimp_image_new (width, height, GIMP_RGB);
          gimp_image_undo_disable (image_ID);
894

895 896 897 898 899 900
          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);
901
          g_free (name);
902

903
          gimp_image_set_resolution (image_ID, resolution, resolution);
904 905
        }

906
      surface = render_page_to_surface (page, width, height, scale, antialias);
907

908 909
      layer_from_surface (image_ID, page_label, i, surface,
                          doc_progress, 1.0 / pages->n_pages);
910 911

      g_free (page_label);
912
      cairo_surface_destroy (surface);
913

914 915
      doc_progress = (double) (i + 1) / pages->n_pages;
      gimp_progress_update (doc_progress);
916 917 918 919 920 921 922 923 924 925

      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;
        }
926 927
    }
  gimp_progress_update (1.0);
928

929 930 931 932 933 934 935
  if (image_ID)
    {
      gimp_image_undo_enable (image_ID);
      gimp_image_clean_all (image_ID);
    }

  if (target == GIMP_PAGE_SELECTOR_TARGET_IMAGES)
936
    {
937 938 939 940 941 942 943 944 945 946 947 948
      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);
949 950
    }

951
  return image_ID;
952 953
}

954 955 956 957
static cairo_surface_t *
get_thumb_surface (PopplerDocument *doc,
                   gint             page_num,
                   gint             preferred_size)
958 959
{
  PopplerPage *page;
960
  cairo_surface_t *surface;
961 962 963 964 965

  page = poppler_document_get_page (doc, page_num);

  if (! page)
    return NULL;
966

967
  surface = poppler_page_get_thumbnail (page);
968

969
  if (! surface)
970
    {
971 972 973
      gdouble width;
      gdouble height;
      gdouble scale;
974 975 976

      poppler_page_get_size (page, &width, &height);

977
      scale = (gdouble) preferred_size / MAX (width, height);
978 979 980 981

      width  *= scale;
      height *= scale;

982
      surface = render_page_to_surface (page, width, height, scale, TRUE);
983 984
    }

985
  g_object_unref (page);
986

987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003
  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);

1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051
  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? */
1052 1053
      idle_data->pixbuf = get_thumb_pixbuf (thread_data->document, i,
                                            THUMBNAIL_SIZE);
1054 1055 1056 1057 1058 1059 1060 1061 1062 1063

      g_idle_add (idle_set_thumbnail, idle_data);

      if (thread_data->stop_thumbnailing)
        break;
    }

  return NULL;
}

1064
static GimpPDBStatusType
1065 1066 1067
load_dialog (PopplerDocument  *doc,
             PdfSelectedPages *pages)
{
1068 1069
  GtkWidget  *dialog;
  GtkWidget  *vbox;
1070
  GtkWidget  *title;
1071
  GtkWidget  *selector;
1072
  GtkWidget  *resolution;
1073
  GtkWidget  *antialias;
1074
  GtkWidget  *hbox;
1075

1076 1077 1078 1079 1080 1081 1082 1083
  ThreadData  thread_data;
  GThread    *thread;

  gint        i;
  gint        n_pages;

  gdouble     width;
  gdouble     height;
1084

1085
  gboolean    run;
1086

1087
  dialog = gimp_dialog_new (_("Import from PDF"), PLUG_IN_ROLE,
1088
                            NULL, 0,
1089
                            gimp_standard_help_func, LOAD_PROC,
1090

1091 1092
                            _("_Cancel"), GTK_RESPONSE_CANCEL,
                            _("_Import"), GTK_RESPONSE_OK,
1093 1094 1095

                            NULL);

1096
  gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
1097 1098 1099 1100
                                           GTK_RESPONSE_OK,
                                           GTK_RESPONSE_CANCEL,
                                           -1);

1101 1102
  gimp_window_set_transient (GTK_WINDOW (dialog));

1103
  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
1104
  gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
1105 1106
  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
                      vbox, TRUE, TRUE, 0);
1107 1108
  gtk_widget_show (vbox);

1109
  /* Title */
1110
  title = gimp_prop_label_new (G_OBJECT (doc), "title");
1111
  gtk_label_set_ellipsize (GTK_LABEL (title), PANGO_ELLIPSIZE_END);
1112 1113
  gtk_box_pack_start (GTK_BOX (vbox), title, FALSE, FALSE, 0);
  gtk_widget_show (title);
1114

1115 1116
  /* Page Selector */
  selector = gimp_page_selector_new ();
1117
  gtk_widget_set_size_request (selector, 380, 360);
1118
  gtk_box_pack_start (GTK_BOX (vbox), selector, TRUE, TRUE, 0);
1119 1120
  gtk_widget_show (selector);

1121
  n_pages = poppler_document_get_n_pages (doc);
1122 1123

  if (n_pages <= 0)
1124 1125 1126 1127
    {
      g_message (_("Error getting number of pages from the given PDF file."));
      return GIMP_PDB_EXECUTION_ERROR;
    }
1128

1129
  gimp_page_selector_set_n_pages (GIMP_PAGE_SELECTOR (selector), n_pages);
1130 1131
  gimp_page_selector_set_target (GIMP_PAGE_SELECTOR (selector),
                                 loadvals.target);
1132

1133
  for (i = 0; i < n_pages; i++)
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143
    {
      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);

1144 1145
      if (i == 0)
        poppler_page_get_size (page, &width, &height);
1146

1147 1148 1149
      g_object_unref (page);
      g_free (label);
    }
1150 1151 1152
  /* Since selecting none will be equivalent to selecting all, this is
   * only useful as a feedback for the default behavior of selecting all
   * pages. */
1153
  gimp_page_selector_select_all (GIMP_PAGE_SELECTOR (selector));
1154

1155 1156 1157 1158
  g_signal_connect_swapped (selector, "activate",
                            G_CALLBACK (gtk_window_activate_default),
                            dialog);

1159 1160 1161 1162
  thread_data.document          = doc;
  thread_data.selector          = GIMP_PAGE_SELECTOR (selector);
  thread_data.stop_thumbnailing = FALSE;

1163
  thread = g_thread_new ("thumbnailer", thumbnail_thread, &thread_data);
1164 1165 1166

  /* Resolution */

1167
  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
1168
  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
1169 1170
  gtk_widget_show (hbox);

1171 1172 1173
  resolution = gimp_resolution_entry_new (_("_Width (pixels):"), width,
                                          _("_Height (pixels):"), height,
                                          GIMP_UNIT_POINT,
1174 1175
                                          _("_Resolution:"),
                                          loadvals.resolution, GIMP_UNIT_INCH);
1176

1177 1178
  gtk_box_pack_start (GTK_BOX (hbox), resolution, FALSE, FALSE, 0);
  gtk_widget_show (resolution);
1179

1180 1181 1182
  g_signal_connect (resolution, "x-changed",
                    G_CALLBACK (gimp_resolution_entry_update_x_in_dpi),
                    &loadvals.resolution);
1183

1184
  /* Antialiasing*/
1185
  antialias = gtk_check_button_new_with_mnemonic (_("Use _Anti-aliasing"));
1186 1187 1188 1189 1190 1191 1192
  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);

1193 1194 1195 1196 1197
  /* Setup done; display the dialog */
  gtk_widget_show (dialog);

  /* run the dialog */
  run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
1198

1199 1200 1201
  loadvals.target =
    gimp_page_selector_get_target (GIMP_PAGE_SELECTOR (selector));

1202
  pages->pages =
1203 1204 1205 1206 1207 1208 1209 1210
    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));

1211
      pages->pages =
1212 1213 1214
        gimp_page_selector_get_selected_pages (GIMP_PAGE_SELECTOR (selector),
                                               &pages->n_pages);
    }
1215

1216 1217 1218 1219
  /* cleanup */
  thread_data.stop_thumbnailing = TRUE;
  g_thread_join (thread);

1220
  return run ? GIMP_PDB_SUCCESS : GIMP_PDB_CANCEL;
1221
}
1222 1223 1224 1225


/**
 ** code for GimpResolutionEntry widget, formerly in libgimpwidgets
1226 1227 1228
 **/

static guint gimp_resolution_entry_signals[LAST_SIGNAL] = { 0 };
1229

1230
static GtkGridClass *parent_class = NULL;
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252


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,
      };

1253
      gre_type = g_type_register_static (GTK_TYPE_GRID,
1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310
                                         "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);

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  klass->value_changed  = NULL;
  klass->refval_changed = NULL;
  klass->unit_changed   = NULL;
1314 1315 1316 1317 1318
}

static void
gimp_resolution_entry_init (GimpResolutionEntry *gre)
{
1319 1320
  gre->unitmenu = NULL;
  gre->unit     = GIMP_UNIT_INCH;
1321

1322 1323
  gtk_grid_set_row_spacing (GTK_GRID (gre), 2);
  gtk_grid_set_column_spacing (GTK_GRID (gre), 4);
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}

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
1355 1356 1357
    {
      gref->value         = initial_val;
    }
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  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);
    }

1380
  digits = size ? 0 : MIN (gimp_unit_get_digits (initial_unit), 5) + 1;
1381

1382 1383 1384 1385
  gref->adjustment = gtk_adjustment_new (gref->value,
                                         gref->min_value,
                                         gref->max_value,
                                         1.0, 10.0, 0.0);
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  gref->spinbutton = gtk_spin_button_new (gref->adjustment,
                                          1.0, digits);
  gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (gref->spinbutton), TRUE);
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  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.
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 * @res_label:         Optional label for the resolution entry.
 * @initial_res:       The initial resolution.
1410 1411 1412 1413
 * @initial_unit:      The initial unit.
 *
 * Creates a new #GimpResolutionEntry widget.
 *
1414
 * The #GimpResolutionEntry is derived from #GtkGrid and will have
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 * 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,
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                           const gchar *res_label,
                           gdouble      initial_res,
                           GimpUnit     initial_unit)
1431 1432
{
  GimpResolutionEntry *gre;
1433
  GtkTreeModel        *model;
1434 1435 1436

  gre = g_object_new (GIMP_TYPE_RESOLUTION_ENTRY, NULL);

1437
  gre->unit = initial_unit;
1438 1439 1440 1441

  gimp_resolution_entry_field_init (gre, &gre->x,
                                    &gre->width,
                                    X_CHANGED,
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                                    initial_res, initial_unit,
                                    FALSE, 0);
1444

1445
  gtk_grid_attach (GTK_GRID (gre), gre->x.spinbutton, 1, 3, 1, 1);
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  g_signal_connect (gre->x.adjustment, "value-changed",
                    G_CALLBACK (gimp_resolution_entry_value_callback),
                    &gre->x);

  gtk_widget_show (gre->x.spinbutton);

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  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);
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  g_object_set (model,
                "short-format", _("pixels/%a"),
                "long-format",  _("pixels/%a"),
                NULL);
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  gimp_unit_combo_box_set_active (GIMP_UNIT_COMBO_BOX (gre->unitmenu),
                                  initial_unit);

1464
  gtk_grid_attach (GTK_GRID (gre), gre->unitmenu, 3, 3, 1, 1);
1465
  g_signal_connect (gre->unitmenu, "changed",
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                    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,
1474
                                    TRUE, 0);
1475

1476
  gtk_grid_attach (GTK_GRID (gre), gre->width.spinbutton, 1, 1, 1, 1);
1477

1478
  gtk_grid_attach (GTK_GRID (gre), gre->width.label, 3, 1, 1, 1);
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  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);

1487
  gimp_resolution_entry_field_init (gre, &gre->height, &gre->x,
1488 1489
                                    HEIGHT_CHANGED,
                                    height, size_unit,
1490
                                    TRUE, 0);
1491

1492
  gtk_grid_attach (GTK_GRID (gre), gre->height.spinbutton, 1, 2, 1, 1);
1493

1494
  gtk_grid_attach (GTK_GRID (gre), gre->height.label, 3, 2, 1, 1);
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  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);

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  if (res_label)
    gimp_resolution_entry_attach_label (gre, res_label,    3, 0, 0.0);
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  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.
 *
1523
 * Attaches a #GtkLabel to the #GimpResolutionEntry (which is a #GtkGrid).
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 *
 * 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)
    {
1543 1544
      GList *children;
      GList *list;
1545

1546 1547 1548
      children = gtk_container_get_children (GTK_CONTAINER (gre));

      for (list = children; list; list = g_list_next (list))
1549
        {
1550 1551 1552 1553 1554 1555 1556 1557
          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);
1558

1559
          if (left_attach == 1 && top_attach == row)
1560
            {
1561
              gtk_label_set_mnemonic_widget (GTK_LABEL (label), child);
1562 1563 1564
              break;
            }
        }
1565 1566

      g_list_free (children);
1567 1568
    }

1569
  gtk_label_set_xalign (GTK_LABEL (label), alignment);
1570

1571
  gtk_grid_attach (GTK_GRID (gre), label, column, row, 1, 1);
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