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PIKApp/plug-ins/common/file-ps.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
* PostScript file plugin
* PostScript writing and GhostScript interfacing code
* Copyright (C) 1997-98 Peter Kirchgessner
* (email: peter@kirchgessner.net, WWW: http://www.kirchgessner.net)
*
* Added controls for TextAlphaBits and GraphicsAlphaBits
* George White <aa056@chebucto.ns.ca>
*
* Added Ascii85 encoding
* Austin Donnelly <austin@gimp.org>
*
* 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/>.
*
*/
/* Event history:
* V 0.90, PK, 28-Mar-97: Creation.
* V 0.91, PK, 03-Apr-97: Clip everything outside BoundingBox.
* 24-Apr-97: Multi page read support.
* V 1.00, PK, 30-Apr-97: PDF support.
* V 1.01, PK, 05-Oct-97: Parse rc-file.
* V 1.02, GW, 09-Oct-97: Antialiasing support.
* PK, 11-Oct-97: No progress bars when running non-interactive.
* New procedure file_ps_load_setargs to set
* load-arguments non-interactively.
* If GS_OPTIONS are not set, use at least "-dSAFER"
* V 1.03, nn, 20-Dec-97: Initialize some variables
* V 1.04, PK, 20-Dec-97: Add Encapsulated PostScript output and preview
* V 1.05, PK, 21-Sep-98: Write b/w-images (indexed) using image-operator
* V 1.06, PK, 22-Dec-98: Fix problem with writing color PS files.
* Ghostview may hang when displaying the files.
* V 1.07, PK, 14-Sep-99: Add resolution to image
* V 1.08, PK, 16-Jan-2000: Add PostScript-Level 2 by Austin Donnelly
* V 1.09, PK, 15-Feb-2000: Force showpage on EPS-files
* Add "RunLength" compression
* Fix problem with "Level 2" toggle
* V 1.10, PK, 15-Mar-2000: For load EPSF, allow negative Bounding Box Values
* Save PS: don't start lines of image data with %%
* to prevent problems with stupid PostScript
* analyzer programs (Stanislav Brabec)
* Add BeginData/EndData comments
* Save PS: Set default rotation to 0
* V 1.11, PK, 20-Aug-2000: Fix problem with BoundingBox recognition
* for Mac files.
* Fix problem with loop when reading not all
* images of a multi page file.
* PK, 31-Aug-2000: Load PS: Add checks for space in filename.
* V 1.12 PK, 19-Jun-2001: Fix problem with command line switch --
* (reported by Ferenc Wagner)
* V 1.13 PK, 07-Apr-2002: Fix problem with DOS binary EPS files
* V 1.14 PK, 14-May-2002: Workaround EPS files of Adb. Ill. 8.0
* V 1.15 PK, 04-Oct-2002: Be more accurate with using BoundingBox
* V 1.16 PK, 22-Jan-2004: Don't use popen(), use g_spawn_async_with_pipes()
* or g_spawn_sync().
* V 1.17 PK, 19-Sep-2004: Fix problem with interpretation of bounding box
*/
#include "config.h"
#include <errno.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <glib/gstdio.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include "libpika/stdplugins-intl.h"
#include <ghostscript/ierrors.h>
#include <ghostscript/iapi.h>
#include <ghostscript/gdevdsp.h>
#define VERSION 1.17
static const gchar dversion[] = "v1.17 19-Sep-2004";
#define LOAD_PS_PROC "file-ps-load"
#define LOAD_EPS_PROC "file-eps-load"
#define LOAD_PS_THUMB_PROC "file-ps-load-thumb"
#define SAVE_PS_PROC "file-ps-save"
#define SAVE_EPS_PROC "file-eps-save"
#define PLUG_IN_BINARY "file-ps"
#define PLUG_IN_ROLE "pika-file-ps"
#define STR_LENGTH 64
#define MIN_RESOLUTION 5
#define MAX_RESOLUTION 8192
typedef struct _PostScript PostScript;
typedef struct _PostScriptClass PostScriptClass;
struct _PostScript
{
PikaPlugIn parent_instance;
};
struct _PostScriptClass
{
PikaPlugInClass parent_class;
};
#define PS_TYPE (ps_get_type ())
#define PS (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PS_TYPE, PostScript))
GType ps_get_type (void) G_GNUC_CONST;
static GList * ps_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * ps_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * ps_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
const PikaValueArray *args,
gpointer run_data);
static PikaValueArray * ps_load_thumb (PikaProcedure *procedure,
GFile *file,
gint size,
const PikaValueArray *args,
gpointer run_data);
static PikaValueArray * ps_save (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GFile *file,
const PikaValueArray *args,
gpointer run_data);
static PikaImage * load_image (GFile *file,
GObject *config,
GError **error);
static gboolean save_image (GFile *file,
GObject *config,
PikaImage *image,
PikaDrawable *drawable,
GError **error);
static void ps_set_save_size (GObject *config,
PikaImage *image);
static gboolean save_ps_header (GOutputStream *output,
GFile *file,
GObject *config,
GError **error);
static gboolean save_ps_setup (GOutputStream *output,
PikaDrawable *drawable,
gint width,
gint height,
GObject *config,
gint bpp,
GError **error);
static gboolean save_ps_trailer (GOutputStream *output,
GError **error);
static gboolean save_ps_preview (GOutputStream *output,
PikaDrawable *drawable,
GObject *config,
GError **error);
static gboolean save_gray (GOutputStream *output,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error);
static gboolean save_bw (GOutputStream *output,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error);
static gboolean save_index (GOutputStream *output,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error);
static gboolean save_rgb (GOutputStream *output,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error);
static gboolean print (GOutputStream *output,
GError **error,
const gchar *format,
...) G_GNUC_PRINTF (3, 4);
static PikaImage * create_new_image (GFile *file,
guint pagenum,
guint width,
guint height,
PikaImageBaseType type,
PikaLayer **layer);
static void check_load_vals (GObject *config);
static void check_save_vals (GObject *config);
static gint page_in_list (gchar *list,
guint pagenum);
static gint get_bbox (GFile *file,
gint *x0,
gint *y0,
gint *x1,
gint *y1);
static FILE * ps_open (GFile *file,
GObject *config,
gint *llx,
gint *lly,
gint *urx,
gint *ury,
gboolean *is_epsf,
gchar **tmp_filename);
static void ps_close (FILE *ifp,
gchar *tmp_filename);
static gboolean skip_ps (FILE *ifp);
static PikaImage * load_ps (GFile *file,
guint pagenum,
FILE *ifp,
gint llx,
gint lly,
gint urx,
gint ury);
static void dither_grey (const guchar *grey,
guchar *bw,
gint npix,
gint linecount);
/* Dialog-handling */
static gint32 count_ps_pages (GFile *file);
static gboolean load_dialog (GFile *file,
PikaProcedure *procedure,
GObject *config);
static gboolean resolution_change_callback (GtkWidget *adjustment,
gpointer data);
typedef struct
{
GtkAdjustment *adjustment[4];
gint level;
} SaveDialogVals;
static gboolean save_dialog (PikaProcedure *procedure,
GObject *config,
PikaImage *image);
static void save_unit_toggle_update (GtkWidget *widget,
gpointer data);
G_DEFINE_TYPE (PostScript, ps, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (PS_TYPE)
DEFINE_STD_SET_I18N
static const char hex[] = "0123456789abcdef";
/* The run mode */
static PikaRunMode l_run_mode;
static void
ps_class_init (PostScriptClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = ps_query_procedures;
plug_in_class->create_procedure = ps_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
ps_init (PostScript *ps)
{
}
static GList *
ps_query_procedures (PikaPlugIn *plug_in)
{
GList *list = NULL;
list = g_list_append (list, g_strdup (LOAD_PS_THUMB_PROC));
list = g_list_append (list, g_strdup (LOAD_PS_PROC));
list = g_list_append (list, g_strdup (LOAD_EPS_PROC));
list = g_list_append (list, g_strdup (SAVE_PS_PROC));
list = g_list_append (list, g_strdup (SAVE_EPS_PROC));
return list;
}
static PikaProcedure *
ps_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, LOAD_PS_PROC) ||
! strcmp (name, LOAD_EPS_PROC))
{
procedure = pika_load_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
ps_load, NULL, NULL);
if (! strcmp (name, LOAD_PS_PROC))
{
pika_procedure_set_menu_label (procedure, _("PostScript document"));
pika_procedure_set_documentation (procedure,
"Load PostScript documents",
"Load PostScript documents",
name);
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"application/postscript");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"ps");
pika_file_procedure_set_magics (PIKA_FILE_PROCEDURE (procedure),
"0,string,%!,0,long,0xc5d0d3c6");
}
else
{
pika_procedure_set_menu_label (procedure,
_("Encapsulated PostScript image"));
pika_procedure_set_documentation (procedure,
"load Encapsulated PostScript images",
"load Encapsulated PostScript images",
name);
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"image/x-eps");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"eps");
pika_file_procedure_set_magics (PIKA_FILE_PROCEDURE (procedure),
"0,string,%!,0,long,0xc5d0d3c6");
}
pika_procedure_set_attribution (procedure,
"Peter Kirchgessner <peter@kirchgessner.net>",
"Peter Kirchgessner",
dversion);
pika_load_procedure_set_thumbnail_loader (PIKA_LOAD_PROCEDURE (procedure),
LOAD_PS_THUMB_PROC);
PIKA_PROC_ARG_INT (procedure, "resolution",
_("Resol_ution"),
_("Resolution to interpret image (dpi)"),
MIN_RESOLUTION, MAX_RESOLUTION, 100,
PIKA_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "width",
_("_Width"),
_("Desired width"),
1, PIKA_MAX_IMAGE_SIZE, 826,
PIKA_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "height",
_("_Height"),
_("Desired height"),
1, PIKA_MAX_IMAGE_SIZE, 1170,
PIKA_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "check-bbox",
_("Try _Bounding Box"),
_("FALSE: Use width/height, TRUE: Use BoundingBox"),
TRUE,
PIKA_PARAM_READWRITE);
PIKA_PROC_ARG_STRING (procedure, "pages",
_("_Pages"),
_("Pages to load (e.g.: 1,3,5-7)"),
"1",
PIKA_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "coloring",
_("Coloring"),
_("4: b/w, 5: grey, 6: color image, 7: automatic"),
4, 7, 6,
PIKA_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "text-alpha-bits",
_("Text antialiasing"),
_("1, 2 or 4"),
1, 4, 1,
PIKA_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "graphoc-alpha-bits",
_("Graphic antialiasing"),
_("1, 2 or 4"),
1, 4, 1,
PIKA_PARAM_READWRITE);
}
else if (! strcmp (name, LOAD_PS_THUMB_PROC))
{
procedure = pika_thumbnail_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
ps_load_thumb, NULL, NULL);
pika_procedure_set_documentation (procedure,
"Loads a small preview from a "
"PostScript or PDF document",
"",
name);
pika_procedure_set_attribution (procedure,
"Peter Kirchgessner <peter@kirchgessner.net>",
"Peter Kirchgessner",
dversion);
}
else if (! strcmp (name, SAVE_PS_PROC) ||
! strcmp (name, SAVE_EPS_PROC))
{
procedure = pika_save_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
ps_save, NULL, NULL);
if (! strcmp (name, SAVE_PS_PROC))
{
pika_procedure_set_menu_label (procedure, _("PostScript document"));
pika_procedure_set_documentation (procedure,
"Export image as PostScript document",
"PostScript exporting handles all "
"image types except those with alpha "
"channels.",
name);
pika_file_procedure_set_format_name (PIKA_FILE_PROCEDURE (procedure),
_("PS"));
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"application/postscript");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"ps");
}
else
{
pika_procedure_set_menu_label (procedure,
_("Encapsulated PostScript"));
pika_procedure_set_documentation (procedure,
"Export image as Encapsulated "
"PostScript image",
"PostScript exporting handles all "
"image types except those with alpha "
"channels.",
name);
pika_file_procedure_set_format_name (PIKA_FILE_PROCEDURE (procedure),
_("EPS"));
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"application/x-eps");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"eps");
}
pika_procedure_set_image_types (procedure, "RGB, GRAY, INDEXED");
pika_procedure_set_attribution (procedure,
"Peter Kirchgessner <peter@kirchgessner.net>",
"Peter Kirchgessner",
dversion);
pika_file_procedure_set_handles_remote (PIKA_FILE_PROCEDURE (procedure),
TRUE);
PIKA_PROC_ARG_DOUBLE (procedure, "width",
_("_Width"),
_("Width of the image in PostScript file "
"(0: use input image size)"),
0, PIKA_MAX_IMAGE_SIZE, 287.0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DOUBLE (procedure, "height",
_("_Height"),
_("Height of the image in PostScript file "
"(0: use input image size)"),
0, PIKA_MAX_IMAGE_SIZE, 200.0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DOUBLE (procedure, "x-offset",
_("_X offset"),
_("X-offset to image from lower left corner"),
-PIKA_MAX_IMAGE_SIZE, PIKA_MAX_IMAGE_SIZE, 5.0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DOUBLE (procedure, "y-offset",
_("Y o_ffset"),
_("Y-offset to image from lower left corner"),
-PIKA_MAX_IMAGE_SIZE, PIKA_MAX_IMAGE_SIZE, 5.0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "unit",
_("Unit"),
_("Unit for width/height/offset. "
"0: inches, 1: millimeters"),
0, 1, 1,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "keep-ratio",
_("_Keep aspect ratio"),
_("FALSE: use width/height, TRUE: keep aspect ratio"),
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "rotation",
_("Rotation"),
"0, 90, 180, 270",
0, 270, 0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "level",
_("PostScript Level _2"),
_("FALSE: PostScript Level 1, TRUE: PostScript Level 2"),
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "eps-flag",
_("Encapsula_ted PostScript"),
_("FALSE: PostScript, TRUE: Encapsulated PostScript"),
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "show-preview",
_("_Preview"),
_("Show Preview"),
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "preview",
_("Preview Si_ze"),
_("0: no preview, >0: max. size of preview"),
0, PIKA_MAX_IMAGE_SIZE, 256,
G_PARAM_READWRITE);
}
return procedure;
}
static PikaValueArray *
ps_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
const PikaValueArray *args,
gpointer run_data)
{
PikaProcedureConfig *config;
PikaValueArray *return_vals;
PikaPDBStatusType status = PIKA_PDB_SUCCESS;
PikaImage *image = NULL;
GError *error = NULL;
gegl_init (NULL, NULL);
config = pika_procedure_create_config (procedure);
pika_procedure_config_begin_run (config, image, run_mode, args);
l_run_mode = run_mode;
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
if (! load_dialog (file, procedure, G_OBJECT (config)))
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
break;
default:
break;
}
check_load_vals (G_OBJECT (config));
image = load_image (file, G_OBJECT (config), &error);
pika_procedure_config_end_run (config, status);
g_object_unref (config);
if (! image)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
error);
return_vals = pika_procedure_new_return_values (procedure,
PIKA_PDB_SUCCESS,
NULL);
PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
return return_vals;
}
static PikaValueArray *
ps_load_thumb (PikaProcedure *procedure,
GFile *file,
gint size,
const PikaValueArray *args,
gpointer run_data)
{
PikaProcedureConfig *config;
PikaValueArray *return_vals;
PikaImage *image = NULL;
GError *error = NULL;
gegl_init (NULL, NULL);
config = pika_procedure_create_config (procedure);
pika_procedure_config_begin_run (config, image,
PIKA_RUN_NONINTERACTIVE, args);
/* We should look for an embedded preview but for now we
* just load the document at a small resolution and the
* first page only.
*/
check_load_vals (NULL);
image = load_image (file, NULL, &error);
pika_procedure_config_end_run (config, PIKA_PDB_SUCCESS);
g_object_unref (config);
if (! image)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
error);
return_vals = pika_procedure_new_return_values (procedure,
PIKA_PDB_SUCCESS,
NULL);
PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
pika_value_array_truncate (return_vals, 2);
return return_vals;
}
static PikaValueArray *
ps_save (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GFile *file,
const PikaValueArray *args,
gpointer run_data)
{
PikaProcedureConfig *config;
PikaPDBStatusType status = PIKA_PDB_SUCCESS;
PikaExportReturn export = PIKA_EXPORT_CANCEL;
PikaImage *orig_image;
gboolean eps_flag = FALSE;
GError *error = NULL;
gegl_init (NULL, NULL);
config = pika_procedure_create_config (procedure);
pika_procedure_config_begin_run (config, image, run_mode, args);
eps_flag = strcmp (pika_procedure_get_name (procedure), SAVE_PS_PROC);
g_object_set (config,
"eps-flag", eps_flag ? 1 : 0,
NULL);
orig_image = image;
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
case PIKA_RUN_WITH_LAST_VALS:
pika_ui_init (PLUG_IN_BINARY);
export = pika_export_image (&image, &n_drawables, &drawables,
eps_flag ? "EPS" : "PostScript",
PIKA_EXPORT_CAN_HANDLE_RGB |
PIKA_EXPORT_CAN_HANDLE_GRAY |
PIKA_EXPORT_CAN_HANDLE_INDEXED);
if (export == PIKA_EXPORT_CANCEL)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
break;
default:
break;
}
if (n_drawables != 1)
{
g_set_error (&error, G_FILE_ERROR, 0,
_("PostScript plug-in does not support multiple layers."));
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CALLING_ERROR,
error);
}
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
ps_set_save_size (G_OBJECT (config), orig_image);
if (! save_dialog (procedure, G_OBJECT (config), image))
status = PIKA_PDB_CANCEL;
break;
case PIKA_RUN_NONINTERACTIVE:
case PIKA_RUN_WITH_LAST_VALS:
break;
default:
break;
}
if (status == PIKA_PDB_SUCCESS)
{
gdouble width = 0.0;
gdouble height = 0.0;
if (config)
g_object_get (config,
"width", &width,
"height", &height,
NULL);
if ((width == 0.0) || (height == 0.0))
ps_set_save_size (G_OBJECT (config), orig_image);
check_save_vals (G_OBJECT (config));
if (! save_image (file, G_OBJECT (config), image, drawables[0], &error))
status = PIKA_PDB_EXECUTION_ERROR;
}
pika_procedure_config_end_run (config, status);
g_object_unref (config);
if (export == PIKA_EXPORT_EXPORT)
{
pika_image_delete (image);
g_free (drawables);
}
return pika_procedure_new_return_values (procedure, status, error);
}
static void compress_packbits (int nin,
unsigned char *src,
int *nout,
unsigned char *dst);
static guint32 ascii85_buf = 0;
static gint ascii85_len = 0;
static gint ascii85_linewidth = 0;
static PikaPageSelectorTarget ps_pagemode = PIKA_PAGE_SELECTOR_TARGET_LAYERS;
static void
ascii85_init (void)
{
ascii85_len = 0;
ascii85_linewidth = 0;
}
static gboolean
ascii85_flush (GOutputStream *output,
GError **error)
{
gchar c[5];
gint i;
gboolean zero_case = (ascii85_buf == 0);
GString *string = g_string_new (NULL);
static gint max_linewidth = 75;
for (i = 4; i >= 0; i--)
{
c[i] = (ascii85_buf % 85) + '!';
ascii85_buf /= 85;
}
/* check for special case: "!!!!!" becomes "z", but only if not
* at end of data. */
if (zero_case && (ascii85_len == 4))
{
if (ascii85_linewidth >= max_linewidth)
{
g_string_append_c (string, '\n');
ascii85_linewidth = 0;
}
g_string_append_c (string, 'z');
ascii85_linewidth++;
}
else
{
for (i = 0; i < ascii85_len + 1; i++)
{
if ((ascii85_linewidth >= max_linewidth) && (c[i] != '%'))
{
g_string_append_c (string, '\n');
ascii85_linewidth = 0;
}
g_string_append_c (string, c[i]);
ascii85_linewidth++;
}
}
ascii85_len = 0;
ascii85_buf = 0;
if (string->len > 0 &&
! g_output_stream_write_all (output,
string->str, string->len, NULL,
NULL, error))
{
g_string_free (string, TRUE);
return FALSE;
}
g_string_free (string, TRUE);
return TRUE;
}
static inline gboolean
ascii85_out (GOutputStream *output,
guchar byte,
GError **error)
{
if (ascii85_len == 4)
if (! ascii85_flush (output, error))
return FALSE;
ascii85_buf <<= 8;
ascii85_buf |= byte;
ascii85_len++;
return TRUE;
}
static gboolean
ascii85_nout (GOutputStream *output,
gint n,
guchar *uptr,
GError **error)
{
while (n-- > 0)
{
if (! ascii85_out (output, *uptr, error))
return FALSE;
uptr++;
}
return TRUE;
}
static gboolean
ascii85_done (GOutputStream *output,
GError **error)
{
if (ascii85_len)
{
/* zero any unfilled buffer portion, then flush */
ascii85_buf <<= (8 * (4 - ascii85_len));
if (! ascii85_flush (output, error))
return FALSE;
}
if (! print (output, error, "~>\n"))
return FALSE;
return TRUE;
}
static void
compress_packbits (int nin,
unsigned char *src,
int *nout,
unsigned char *dst)
{
unsigned char c;
int nrepeat, nliteral;
unsigned char *run_start;
unsigned char *start_dst = dst;
unsigned char *last_literal = NULL;
for (;;)
{
if (nin <= 0) break;
run_start = src;
c = *run_start;
/* Search repeat bytes */
if ((nin > 1) && (c == src[1]))
{
nrepeat = 1;
nin -= 2;
src += 2;
while ((nin > 0) && (c == *src))
{
nrepeat++;
src++;
nin--;
if (nrepeat == 127) break; /* Maximum repeat */
}
/* Add two-byte repeat to last literal run ? */
if ( (nrepeat == 1)
&& (last_literal != NULL) && (((*last_literal)+1)+2 <= 128))
{
*last_literal += 2;
*(dst++) = c;
*(dst++) = c;
continue;
}
/* Add repeat run */
*(dst++) = (unsigned char)((-nrepeat) & 0xff);
*(dst++) = c;
last_literal = NULL;
continue;
}
/* Search literal bytes */
nliteral = 1;
nin--;
src++;
for (;;)
{
if (nin <= 0) break;
if ((nin >= 2) && (src[0] == src[1])) /* A two byte repeat ? */
break;
nliteral++;
nin--;
src++;
if (nliteral == 128) break; /* Maximum literal run */
}
/* Could be added to last literal run ? */
if ((last_literal != NULL) && (((*last_literal)+1)+nliteral <= 128))
{
*last_literal += nliteral;
}
else
{
last_literal = dst;
*(dst++) = (unsigned char)(nliteral-1);
}
while (nliteral-- > 0) *(dst++) = *(run_start++);
}
*nout = dst - start_dst;
}
typedef struct
{
goffset eol;
goffset begin_data;
} PS_DATA_POS;
static PS_DATA_POS ps_data_pos = { 0, 0 };
static gboolean
ps_begin_data (GOutputStream *output,
GError **error)
{
/* %%BeginData: 123456789012 ASCII Bytes */
if (! print (output, error, "%s", "%%BeginData: "))
return FALSE;
ps_data_pos.eol = g_seekable_tell (G_SEEKABLE (output));
if (! print (output, error, "\n"))
return FALSE;
ps_data_pos.begin_data = g_seekable_tell (G_SEEKABLE (output));
return TRUE;
}
static gboolean
ps_end_data (GOutputStream *output,
GError **error)
{
goffset end_data;
gchar s[64];
if ((ps_data_pos.begin_data > 0) && (ps_data_pos.eol > 0))
{
end_data = g_seekable_tell (G_SEEKABLE (output));
if (end_data > 0)
{
g_snprintf (s, sizeof (s),
"%"G_GOFFSET_FORMAT" ASCII Bytes", end_data - ps_data_pos.begin_data);
if (! g_seekable_seek (G_SEEKABLE (output),
ps_data_pos.eol - strlen (s), G_SEEK_SET,
NULL, error))
return FALSE;
if (! print (output, error, "%s", s))
return FALSE;
if (! g_seekable_seek (G_SEEKABLE (output),
end_data, G_SEEK_SET,
NULL, error))
return FALSE;
}
}
if (! print (output, error, "%s\n", "%%EndData"))
return FALSE;
return TRUE;
}
static PikaImage *
load_image (GFile *file,
GObject *config,
GError **error)
{
PikaImage *image = NULL;
PikaImage **image_list, **nl;
const gchar *filename;
gint width;
gint height;
guint resolution;
gboolean use_bbox;
gint pnm_type;
gint text_alpha;
gint graphics_alpha;
gchar *pages;
guint page_count;
FILE *ifp;
gchar *temp;
gint llx, lly, urx, ury;
gint k, n_images, max_images, max_pagenum;
gboolean is_epsf;
GdkPixbuf *pixbuf = NULL;
gchar *tmp_filename = NULL;
if (config)
{
g_object_get (config,
"resolution", &resolution,
"width", &width,
"height", &height,
"pages", &pages,
"check-bbox", &use_bbox,
"coloring", &pnm_type,
"text-alpha-bits", &text_alpha,
"graphoc-alpha-bits", &graphics_alpha,
NULL);
}
else
{
pages = g_strdup_printf ("1");
}
#ifdef PS_DEBUG
g_print ("load_image:\n resolution = %d\n", resolution);
g_print (" %dx%d pixels\n", width, height);
g_print (" BoundingBox: %d\n", use_bbox);
g_print (" Coloring: %d\n", pnm_type);
g_print (" TextAlphaBits: %d\n", text_alpha);
g_print (" GraphicsAlphaBits: %d\n", graphics_alpha);
#endif
pika_progress_init_printf (_("Opening '%s'"),
pika_file_get_utf8_name (file));
/* Try to see if PostScript file is available */
filename = pika_file_get_utf8_name (file);
ifp = g_fopen (filename, "r");
if (! ifp)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for reading: %s"),
pika_file_get_utf8_name (file), g_strerror (errno));
return NULL;
}
fclose (ifp);
ifp = ps_open (file, config, &llx, &lly, &urx, &ury, &is_epsf, &tmp_filename);
if (!ifp)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR,
_("Could not interpret PostScript file '%s'"),
pika_file_get_utf8_name (file));
return NULL;
}
image_list = g_new (PikaImage *, 10);
n_images = 0;
max_images = 10;
max_pagenum = 9999; /* Try to get the maximum pagenumber to read */
if (is_epsf)
{
max_pagenum = 1;
/* Use pixbuf to load transparent EPS as PNGs */
pixbuf = gdk_pixbuf_new_from_file (tmp_filename, error);
if (! pixbuf)
return NULL;
}
if (! page_in_list (pages, max_pagenum)) /* Is there a limit in list ? */
{
max_pagenum = -1;
for (temp = pages; *temp != '\0'; temp++)
{
if ((*temp < '0') || (*temp > '9'))
continue; /* Search next digit */
sscanf (temp, "%d", &k);
if (k > max_pagenum)
max_pagenum = k;
while ((*temp >= '0') && (*temp <= '9'))
temp++;
temp--;
}
if (max_pagenum < 1)
max_pagenum = 9999;
}
/* Load all images */
for (page_count = 1; page_count <= max_pagenum; page_count++)
{
if (page_in_list (pages, page_count))
{
image = load_ps (file, page_count, ifp, llx, lly, urx, ury);
if (! image)
break;
pika_image_set_resolution (image,
(gdouble) resolution,
(gdouble) resolution);
if (n_images == max_images)
{
nl = (PikaImage **) g_realloc (image_list,
(max_images+10)*sizeof (PikaImage *));
if (nl == NULL) break;
image_list = nl;
max_images += 10;
}
image_list[n_images++] = image;
}
else /* Skip an image */
{
image = NULL;
if (! skip_ps (ifp))
break;
}
}
ps_close (ifp, tmp_filename);
/* EPS are now imported using pngalpha, so they can be converted
* to a layer with pika_layer_new_from_pixbuf () and exported at
* this part of the loading process
*/
if (is_epsf)
{
PikaLayer *layer;
image = pika_image_new (urx, ury, PIKA_RGB);
pika_image_undo_disable (image);
pika_image_set_resolution (image, resolution, resolution);
layer = pika_layer_new_from_pixbuf (image, _("Rendered EPS"), pixbuf,
100,
pika_image_get_default_new_layer_mode (image),
0.0, 1.0);
pika_image_insert_layer (image, layer, NULL, 0);
pika_image_undo_enable (image);
g_free (image_list);
g_object_unref (pixbuf);
return image;
}
if (ps_pagemode == PIKA_PAGE_SELECTOR_TARGET_LAYERS)
{
for (k = 0; k < n_images; k++)
{
if (k == 0)
{
GFile *new_file;
gchar *uri;
gchar *new_uri;
image = image_list[0];
uri = g_file_get_uri (file);
new_uri = g_strdup_printf (_("%s-pages"), uri);
g_free (uri);
new_file = g_file_new_for_uri (new_uri);
g_free (new_uri);
g_object_unref (new_file);
}
else
{
PikaLayer *current_layer;
gchar *name;
PikaItem **tmp_drawables;
gint n_drawables;
tmp_drawables = pika_image_get_selected_drawables (image_list[k], &n_drawables);
name = pika_item_get_name (PIKA_ITEM (tmp_drawables[0]));
current_layer = pika_layer_new_from_drawable (PIKA_DRAWABLE (tmp_drawables[0]),
image);
pika_item_set_name (PIKA_ITEM (current_layer), name);
pika_image_insert_layer (image, current_layer, NULL, -1);
pika_image_delete (image_list[k]);
g_free (tmp_drawables);
g_free (name);
}
}
pika_image_undo_enable (image);
}
else
{
/* Display images in reverse order.
* The last will be displayed by PIKA itself
*/
for (k = n_images - 1; k >= 0; k--)
{
pika_image_undo_enable (image_list[k]);
pika_image_clean_all (image_list[k]);
if (l_run_mode != PIKA_RUN_NONINTERACTIVE && k > 0)
pika_display_new (image_list[k]);
}
image = (n_images > 0) ? image_list[0] : NULL;
}
g_free (image_list);
return image;
}
static gboolean
save_image (GFile *file,
GObject *config,
PikaImage *image,
PikaDrawable *drawable,
GError **error)
{
GOutputStream *output;
GCancellable *cancellable;
PikaImageType drawable_type;
drawable_type = pika_drawable_type (drawable);
/* Make sure we're not exporting an image with an alpha channel */
if (pika_drawable_has_alpha (drawable))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("PostScript export cannot handle images with alpha channels"));
return FALSE;
}
switch (drawable_type)
{
case PIKA_INDEXED_IMAGE:
case PIKA_GRAY_IMAGE:
case PIKA_RGB_IMAGE:
break;
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Cannot operate on unknown image types."));
return FALSE;
break;
}
pika_progress_init_printf (_("Exporting '%s'"),
pika_file_get_utf8_name (file));
output = G_OUTPUT_STREAM (g_file_replace (file,
NULL, FALSE, G_FILE_CREATE_NONE,
NULL, error));
if (output)
{
GOutputStream *buffered;
buffered = g_buffered_output_stream_new (output);
g_object_unref (output);
output = buffered;
}
else
{
return FALSE;
}
if (! save_ps_header (output, file, config, error))
goto fail;
switch (drawable_type)
{
case PIKA_INDEXED_IMAGE:
if (! save_index (output, image, drawable, config, error))
goto fail;
break;
case PIKA_GRAY_IMAGE:
if (! save_gray (output, image, drawable, config, error))
goto fail;
break;
case PIKA_RGB_IMAGE:
if (! save_rgb (output, image, drawable, config, error))
goto fail;
break;
default:
g_return_val_if_reached (FALSE);
}
if (! save_ps_trailer (output, error))
goto fail;
if (! g_output_stream_close (output, NULL, error))
goto fail;
g_object_unref (output);
return TRUE;
fail:
cancellable = g_cancellable_new ();
g_cancellable_cancel (cancellable);
g_output_stream_close (output, cancellable, NULL);
g_object_unref (output);
g_object_unref (cancellable);
return FALSE;
}
/* Check (and correct) the load values */
static void
check_load_vals (GObject *config)
{
gint resolution = MIN_RESOLUTION;
gdouble width = 2;
gdouble height = 2;
gboolean use_bbox = FALSE;
gint pnm_type = 6;
gint text_alpha = 1;
gint graphics_alpha = 1;
gchar *pages;
if (config)
{
g_object_get (config,
"resolution", &resolution,
"width", &width,
"height", &height,
"check_bbox", &use_bbox,
"coloring", &pnm_type,
"pages", &pages,
"text-alpha-bits", &text_alpha,
"graphoc-alpha-bits", &graphics_alpha,
NULL);
}
if (resolution < MIN_RESOLUTION)
resolution = MIN_RESOLUTION;
else if (resolution > MAX_RESOLUTION)
resolution = MAX_RESOLUTION;
if (width < 2)
width = 2;
if (height < 2)
height = 2;
use_bbox = (use_bbox != 0);
if (! pages)
pages = g_strdup_printf ("1-99");
if ((pnm_type < 4) || (pnm_type > 7))
pnm_type = 6;
if ((text_alpha != 1) && (text_alpha != 2) &&
(text_alpha != 4))
text_alpha = 1;
if ((graphics_alpha != 1) && (graphics_alpha != 2) &&
(graphics_alpha != 4))
graphics_alpha = 1;
if (config)
{
g_object_set (config,
"resolution", resolution,
"width", width,
"height", height,
"check_bbox", use_bbox ? 1 : 0,
"coloring", pnm_type,
"pages", pages,
"text-alpha-bits", text_alpha,
"graphoc-alpha-bits", graphics_alpha,
NULL);
}
g_free (pages);
}
/* Check (and correct) the save values */
static void
check_save_vals (GObject *config)
{
gint i = 90;
gint preview_size = 0;
gboolean preview = TRUE;
g_object_get (config,
"rotation", &i,
"show-preview", &preview,
"preview", &preview_size,
NULL);
if ((i != 0) && (i != 90) && (i != 180) && (i != 270))
i = 90;
if (preview_size <= 0)
preview = FALSE;
g_object_set (config,
"rotation", i,
"show-preview", preview ? 1 : 0,
"preview", preview_size,
NULL);
}
static void
ps_set_save_size (GObject *config,
PikaImage *image)
{
gdouble xres, yres, factor, iw, ih;
guint width, height;
PikaUnit unit;
gboolean unit_mm = FALSE;
pika_image_get_resolution (image, &xres, &yres);
if ((xres < 1e-5) || (yres < 1e-5))
xres = yres = 72.0;
/* Calculate size of image in inches */
width = pika_image_get_width (image);
height = pika_image_get_height (image);
iw = width / xres;
ih = height / yres;
unit = pika_image_get_unit (image);
factor = pika_unit_get_factor (unit);
if (factor == 0.0254 ||
factor == 0.254 ||
factor == 2.54 ||
factor == 25.4)
{
unit_mm = TRUE;
}
if (unit_mm)
{
iw *= 25.4;
ih *= 25.4;
}
g_object_set (config,
"unit", unit_mm ? 1 : 0,
"width", iw,
"height", ih,
NULL);
}
/* Check if a page is in a given list */
static gint
page_in_list (gchar *list,
guint page_num)
{
char tmplist[STR_LENGTH], *c0, *c1;
int state, start_num, end_num;
#define READ_STARTNUM 0
#define READ_ENDNUM 1
#define CHK_LIST(a,b,c) {int low=(a),high=(b),swp; \
if ((low>0) && (high>0)) { \
if (low>high) {swp=low; low=high; high=swp;} \
if ((low<=(c))&&(high>=(c))) return (1); } }
if ((list == NULL) || (*list == '\0'))
return 1;
g_strlcpy (tmplist, list, STR_LENGTH);
c0 = c1 = tmplist;
while (*c1) /* Remove all whitespace and break on unsupported characters */
{
if ((*c1 >= '0') && (*c1 <= '9'))
{
*(c0++) = *c1;
}
else if ((*c1 == '-') || (*c1 == ','))
{ /* Try to remove double occurrences of these characters */
if (c0 == tmplist)
{
*(c0++) = *c1;
}
else
{
if (*(c0-1) != *c1)
*(c0++) = *c1;
}
}
else
break;
c1++;
}
if (c0 == tmplist)
return 1;
*c0 = '\0';
/* Now we have a comma separated list like 1-4-1,-3,1- */
start_num = end_num = -1;
state = READ_STARTNUM;
for (c0 = tmplist; *c0 != '\0'; c0++)
{
switch (state)
{
case READ_STARTNUM:
if (*c0 == ',')
{
if ((start_num > 0) && (start_num == (int)page_num))
return -1;
start_num = -1;
}
else if (*c0 == '-')
{
if (start_num < 0) start_num = 1;
state = READ_ENDNUM;
}
else /* '0' - '9' */
{
if (start_num < 0) start_num = 0;
start_num *= 10;
start_num += *c0 - '0';
}
break;
case READ_ENDNUM:
if (*c0 == ',')
{
if (end_num < 0) end_num = 9999;
CHK_LIST (start_num, end_num, (int)page_num);
start_num = end_num = -1;
state = READ_STARTNUM;
}
else if (*c0 == '-')
{
CHK_LIST (start_num, end_num, (int)page_num);
start_num = end_num;
end_num = -1;
}
else /* '0' - '9' */
{
if (end_num < 0) end_num = 0;
end_num *= 10;
end_num += *c0 - '0';
}
break;
}
}
if (state == READ_STARTNUM)
{
if (start_num > 0)
return (start_num == (int) page_num);
}
else
{
if (end_num < 0) end_num = 9999;
CHK_LIST (start_num, end_num, (int)page_num);
}
return 0;
#undef CHK_LIST
}
/* A function like fgets, but treats single CR-character as line break. */
/* As a line break the newline-character is returned. */
static char *psfgets (char *s, int size, FILE *stream)
{
int c;
char *sptr = s;
if (size <= 0)
return NULL;
if (size == 1)
{
*s = '\0';
return NULL;
}
c = getc (stream);
if (c == EOF)
return NULL;
for (;;)
{
/* At this point we have space in sptr for at least two characters */
if (c == '\n') /* Got end of line (UNIX line end) ? */
{
*(sptr++) = '\n';
break;
}
else if (c == '\r') /* Got a carriage return. Check next character */
{
c = getc (stream);
if ((c == EOF) || (c == '\n')) /* EOF or DOS line end ? */
{
*(sptr++) = '\n'; /* Return UNIX line end */
break;
}
else /* Single carriage return. Return UNIX line end. */
{
ungetc (c, stream); /* Save the extra character */
*(sptr++) = '\n';
break;
}
}
else /* no line end character */
{
*(sptr++) = (char)c;
size--;
}
if (size == 1)
break; /* Only space for the nul-character ? */
c = getc (stream);
if (c == EOF)
break;
}
*sptr = '\0';
return s;
}
/* Get the BoundingBox of a PostScript file. On success, 0 is returned. */
/* On failure, -1 is returned. */
static gint
get_bbox (GFile *file,
gint *x0,
gint *y0,
gint *x1,
gint *y1)
{
char line[1024], *src;
FILE *ifp;
int retval = -1;
ifp = g_fopen (g_file_peek_path (file), "rb");
if (! ifp)
return -1;
for (;;)
{
if (psfgets (line, sizeof (line)-1, ifp) == NULL) break;
if ((line[0] != '%') || (line[1] != '%')) continue;
src = &(line[2]);
while ((*src == ' ') || (*src == '\t')) src++;
if (strncmp (src, "BoundingBox", 11) != 0) continue;
src += 11;
while ((*src == ' ') || (*src == '\t') || (*src == ':')) src++;
if (strncmp (src, "(atend)", 7) == 0) continue;
if (sscanf (src, "%d%d%d%d", x0, y0, x1, y1) == 4)
retval = 0;
break;
}
fclose (ifp);
return retval;
}
/* Open the PostScript file. On failure, NULL is returned. */
/* The filepointer returned will give a PNM-file generated */
/* by the PostScript-interpreter. */
static FILE *
ps_open (GFile *file,
GObject *config,
gint *llx,
gint *lly,
gint *urx,
gint *ury,
gboolean *is_epsf,
gchar **tmp_filename)
{
const gchar *filename;
const gchar *driver;
GPtrArray *cmdA;
gchar **pcmdA;
FILE *fd_popen = NULL;
FILE *eps_file;
gint width, height;
gint resolution;
gboolean use_bbox;
gint pnm_type;
gint text_alpha;
gint graphics_alpha;
gint x0, y0, x1, y1;
gint offx = 0;
gint offy = 0;
gboolean is_pdf;
gboolean maybe_epsf = FALSE;
int code;
void *instance = NULL;
if (config)
{
g_object_get (config,
"width", &width,
"height", &height,
"resolution", &resolution,
"check-bbox", &use_bbox,
"coloring", &pnm_type,
"text-alpha-bits", &text_alpha,
"graphoc-alpha-bits", &graphics_alpha,
NULL);
}
else
{
width = 256;
height = 256;
resolution = 256 / 4;
}
*llx = *lly = 0;
*urx = width - 1;
*ury = height - 1;
/* Check if the file is a PDF. For PDF, we can't set geometry */
is_pdf = FALSE;
/* Check if it is a EPS-file */
*is_epsf = FALSE;
filename = pika_file_get_utf8_name (file);
eps_file = g_fopen (filename, "rb");
if (eps_file)
{
gchar hdr[512];
fread (hdr, 1, sizeof(hdr), eps_file);
is_pdf = (strncmp (hdr, "%PDF", 4) == 0);
if (!is_pdf) /* Check for EPSF */
{
char *adobe, *epsf;
int ds = 0;
static unsigned char doseps[5] = { 0xc5, 0xd0, 0xd3, 0xc6, 0 };
hdr[sizeof(hdr)-1] = '\0';
adobe = strstr (hdr, "PS-Adobe-");
epsf = strstr (hdr, "EPSF-");
if ((adobe != NULL) && (epsf != NULL))
ds = epsf - adobe;
*is_epsf = ((ds >= 11) && (ds <= 15));
/* Illustrator uses negative values in BoundingBox without marking */
/* files as EPSF. Try to handle that. */
maybe_epsf =
(strstr (hdr, "%%Creator: Adobe Illustrator(R) 8.0") != 0);
/* Check DOS EPS binary file */
if ((!*is_epsf) && (strncmp (hdr, (char *)doseps, 4) == 0))
*is_epsf = 1;
}
fclose (eps_file);
}
if ((!is_pdf) && (use_bbox)) /* Try the BoundingBox ? */
{
if (get_bbox (file, &x0, &y0, &x1, &y1) == 0)
{
if (maybe_epsf && ((x0 < 0) || (y0 < 0)))
*is_epsf = 1;
if (*is_epsf) /* Handle negative BoundingBox for EPSF */
{
offx = -x0; x1 += offx; x0 += offx;
offy = -y0; y1 += offy; y0 += offy;
}
if ((x0 >= 0) && (y0 >= 0) && (x1 > x0) && (y1 > y0))
{
*llx = (int)((x0/72.0) * resolution + 0.0001);
*lly = (int)((y0/72.0) * resolution + 0.0001);
/* Use upper bbox values as image size */
width = (int)((x1/72.0) * resolution + 0.5);
height = (int)((y1/72.0) * resolution + 0.5);
/* Pixel coordinates must be one less */
*urx = width - 1;
*ury = height - 1;
if (*urx < *llx) *urx = *llx;
if (*ury < *lly) *ury = *lly;
}
}
}
switch (pnm_type)
{
case 4:
driver = "pbmraw";
break;
case 5:
driver = "pgmraw";
break;
case 7:
driver = "pnmraw";
break;
default:
driver = "ppmraw";
break;
}
/* For instance, the Win32 port of ghostscript doesn't work correctly when
* using standard output as output file.
* Thus, use a real output file.
*/
if (*is_epsf)
{
driver = "pngalpha";
*tmp_filename = g_file_get_path (pika_temp_file ("png"));
}
else
{
*tmp_filename = g_file_get_path (pika_temp_file ("pnm"));
}
/* Build command array */
cmdA = g_ptr_array_new ();
g_ptr_array_add (cmdA, g_strdup (g_get_prgname ()));
g_ptr_array_add (cmdA, g_strdup_printf ("-sDEVICE=%s", driver));
g_ptr_array_add (cmdA, g_strdup_printf ("-r%d", resolution));
if (is_pdf)
{
/* Acrobat Reader honors CropBox over MediaBox, so let's match that
* behavior.
*/
g_ptr_array_add (cmdA, g_strdup ("-dUseCropBox"));
}
else
{
/* For PDF, we can't set geometry */
g_ptr_array_add (cmdA, g_strdup_printf ("-g%dx%d", width, height));
}
/* Antialiasing not available for PBM-device */
if ((pnm_type != 4) && (text_alpha != 1))
g_ptr_array_add (cmdA, g_strdup_printf ("-dTextAlphaBits=%d",
text_alpha));
if ((pnm_type != 4) && (graphics_alpha != 1))
g_ptr_array_add (cmdA, g_strdup_printf ("-dGraphicsAlphaBits=%d",
graphics_alpha));
g_ptr_array_add (cmdA, g_strdup ("-q"));
g_ptr_array_add (cmdA, g_strdup ("-dBATCH"));
g_ptr_array_add (cmdA, g_strdup ("-dNOPAUSE"));
/* If no additional options specified, use at least -dSAFER */
if (g_getenv ("GS_OPTIONS") == NULL)
g_ptr_array_add (cmdA, g_strdup ("-dSAFER"));
/* Output file name */
g_ptr_array_add (cmdA, g_strdup_printf ("-sOutputFile=%s", *tmp_filename));
/* Offset command for gs to get image part with negative x/y-coord. */
if ((offx != 0) || (offy != 0))
{
g_ptr_array_add (cmdA, g_strdup ("-c"));
g_ptr_array_add (cmdA, g_strdup_printf ("%d", offx));
g_ptr_array_add (cmdA, g_strdup_printf ("%d", offy));
g_ptr_array_add (cmdA, g_strdup ("translate"));
}
/* input file name */
g_ptr_array_add (cmdA, g_strdup ("-f"));
g_ptr_array_add (cmdA, g_strdup (filename));
if (*is_epsf)
{
g_ptr_array_add (cmdA, g_strdup ("-c"));
g_ptr_array_add (cmdA, g_strdup ("showpage"));
}
g_ptr_array_add (cmdA, g_strdup ("-c"));
g_ptr_array_add (cmdA, g_strdup ("quit"));
g_ptr_array_add (cmdA, NULL);
pcmdA = (gchar **) cmdA->pdata;
#ifdef PS_DEBUG
{
gchar **p = pcmdA;
g_print ("Passing args (argc=%d):\n", cmdA->len - 1);
while (*p)
{
g_print ("%s\n", *p);
p++;
}
}
#endif
code = gsapi_new_instance (&instance, NULL);
if (code == 0) {
code = gsapi_set_arg_encoding(instance, GS_ARG_ENCODING_UTF8);
code = gsapi_init_with_args (instance, cmdA->len - 1, pcmdA);
code = gsapi_exit (instance);
gsapi_delete_instance (instance);
}
/* Don't care about exit status of ghostscript. */
/* Just try to read what it wrote. */
fd_popen = g_fopen (*tmp_filename, "rb");
g_ptr_array_free (cmdA, FALSE);
g_strfreev (pcmdA);
return fd_popen;
}
/* Close the PNM-File of the PostScript interpreter */
static void
ps_close (FILE *ifp, gchar *tmp_filename)
{
/* If a real outputfile was used, close the file and remove it. */
fclose (ifp);
g_unlink (tmp_filename);
}
/* Read the header of a raw PNM-file and return type (4-6) or -1 on failure */
static gint
read_pnmraw_type (FILE *ifp,
gint *width,
gint *height,
gint *maxval)
{
int frst, scnd, thrd;
gint pnmtype;
gchar line[1024];
/* GhostScript may write some informational messages infront of the header. */
/* We are just looking at a Px\n in the input stream. */
frst = getc (ifp);
scnd = getc (ifp);
thrd = getc (ifp);
for (;;)
{
if (thrd == EOF) return -1;
#ifdef G_OS_WIN32
if (thrd == '\r') thrd = getc (ifp);
#endif
if ((thrd == '\n') && (frst == 'P') && (scnd >= '1') && (scnd <= '6'))
break;
frst = scnd;
scnd = thrd;
thrd = getc (ifp);
}
pnmtype = scnd - '0';
/* We don't use the ASCII-versions */
if ((pnmtype >= 1) && (pnmtype <= 3))
return -1;
/* Read width/height */
for (;;)
{
if (fgets (line, sizeof (line)-1, ifp) == NULL)
return -1;
if (line[0] != '#')
break;
}
if (sscanf (line, "%d%d", width, height) != 2)
return -1;
*maxval = 255;
if (pnmtype != 4) /* Read maxval */
{
for (;;)
{
if (fgets (line, sizeof (line)-1, ifp) == NULL)
return -1;
if (line[0] != '#')
break;
}
if (sscanf (line, "%d", maxval) != 1)
return -1;
}
return pnmtype;
}
/* Create an image. Sets layer, drawable and rgn. Returns image */
static PikaImage *
create_new_image (GFile *file,
guint pagenum,
guint width,
guint height,
PikaImageBaseType type,
PikaLayer **layer)
{
PikaImage *image;
PikaImageType gdtype;
gchar *tmp;
switch (type)
{
case PIKA_GRAY:
gdtype = PIKA_GRAY_IMAGE;
break;
case PIKA_INDEXED:
gdtype = PIKA_INDEXED_IMAGE;
break;
case PIKA_RGB:
default:
gdtype = PIKA_RGB_IMAGE;
}
image = pika_image_new_with_precision (width, height, type,
PIKA_PRECISION_U8_NON_LINEAR);
pika_image_undo_disable (image);
tmp = g_strdup_printf (_("Page %d"), pagenum);
*layer = pika_layer_new (image, tmp, width, height,
gdtype,
100,
pika_image_get_default_new_layer_mode (image));
g_free (tmp);
pika_image_insert_layer (image, *layer, NULL, 0);
return image;
}
/* Skip PNM image generated from PostScript file. */
/* Return TRUE on success, FALSE otherwise. */
static gboolean
skip_ps (FILE *ifp)
{
guchar buf[8192];
gsize len;
gint pnmtype, width, height, maxval, bpl;
pnmtype = read_pnmraw_type (ifp, &width, &height, &maxval);
if (pnmtype == 4) /* Portable bitmap */
bpl = (width + 7) / 8;
else if (pnmtype == 5)
bpl = width;
else if (pnmtype == 6)
bpl = width * 3;
else
return FALSE;
len = bpl * height;
while (len)
{
gsize bytes = fread (buf, 1, MIN (len, sizeof (buf)), ifp);
if (bytes < MIN (len, sizeof (buf)))
return FALSE;
len -= bytes;
}
return TRUE;
}
/* Load PNM image generated from PostScript file */
static PikaImage *
load_ps (GFile *file,
guint pagenum,
FILE *ifp,
gint llx,
gint lly,
gint urx,
gint ury)
{
guchar *dest;
guchar *data, *bitline = NULL, *byteline = NULL, *byteptr, *temp;
guchar bit2byte[256*8];
int width, height, tile_height, scan_lines, total_scan_lines;
int image_width, image_height;
int skip_left, skip_bottom;
int i, j, pnmtype, maxval, bpp, nread;
PikaImageBaseType imagetype;
PikaImage *image;
PikaLayer *layer;
GeglBuffer *buffer = NULL;
int err = 0;
int e;
pnmtype = read_pnmraw_type (ifp, &width, &height, &maxval);
if ((width == urx+1) && (height == ury+1)) /* gs respected BoundingBox ? */
{
skip_left = llx; skip_bottom = lly;
image_width = width - skip_left;
image_height = height - skip_bottom;
}
else
{
skip_left = skip_bottom = 0;
image_width = width;
image_height = height;
}
if (pnmtype == 4) /* Portable Bitmap */
{
imagetype = PIKA_INDEXED;
nread = (width+7)/8;
bpp = 1;
bitline = g_new (guchar, nread);
byteline = g_new (guchar, nread * 8);
/* Get an array for mapping 8 bits in a byte to 8 bytes */
temp = bit2byte;
for (j = 0; j < 256; j++)
for (i = 7; i >= 0; i--)
*(temp++) = ((j & (1 << i)) != 0);
}
else if (pnmtype == 5) /* Portable Greymap */
{
imagetype = PIKA_GRAY;
nread = width;
bpp = 1;
byteline = g_new (guchar, nread);
}
else if (pnmtype == 6) /* Portable Pixmap */
{
imagetype = PIKA_RGB;
nread = width * 3;
bpp = 3;
byteline = g_new (guchar, nread);
}
else
return NULL;
image = create_new_image (file, pagenum,
image_width, image_height, imagetype,
&layer);
buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (layer));
tile_height = pika_tile_height ();
data = g_malloc (tile_height * image_width * bpp);
dest = data;
total_scan_lines = scan_lines = 0;
if (pnmtype == 4) /* Read bitimage ? Must be mapped to indexed */
{
const guchar BWColorMap[2*3] = { 255, 255, 255, 0, 0, 0 };
pika_image_set_colormap (image, BWColorMap, 2);
for (i = 0; i < height; i++)
{
e = (fread (bitline, 1, nread, ifp) != nread);
if (total_scan_lines >= image_height)
continue;
err |= e;
if (err)
break;
j = width; /* Map 1 byte of bitimage to 8 bytes of indexed image */
temp = bitline;
byteptr = byteline;
while (j >= 8)
{
memcpy (byteptr, bit2byte + *(temp++)*8, 8);
byteptr += 8;
j -= 8;
}
if (j > 0)
memcpy (byteptr, bit2byte + *temp*8, j);
memcpy (dest, byteline+skip_left, image_width);
dest += image_width;
scan_lines++;
total_scan_lines++;
if ((scan_lines == tile_height) || ((i + 1) == image_height))
{
gegl_buffer_set (buffer,
GEGL_RECTANGLE (0, i-scan_lines+1,
image_width, scan_lines),
0,
NULL,
data,
GEGL_AUTO_ROWSTRIDE);
scan_lines = 0;
dest = data;
}
if ((i % 20) == 0)
pika_progress_update ((gdouble) (i + 1) / (gdouble) image_height);
if (err)
break;
}
}
else /* Read gray/rgb-image */
{
for (i = 0; i < height; i++)
{
e = (fread (byteline, bpp, width, ifp) != width);
if (total_scan_lines >= image_height)
continue;
err |= e;
if (err)
break;
memcpy (dest, byteline+skip_left*bpp, image_width*bpp);
dest += image_width*bpp;
scan_lines++;
total_scan_lines++;
if ((scan_lines == tile_height) || ((i + 1) == image_height))
{
gegl_buffer_set (buffer,
GEGL_RECTANGLE (0, i-scan_lines+1,
image_width, scan_lines),
0,
NULL,
data,
GEGL_AUTO_ROWSTRIDE);
scan_lines = 0;
dest = data;
}
if ((i % 20) == 0)
pika_progress_update ((gdouble) (i + 1) / (gdouble) image_height);
if (err)
break;
}
}
pika_progress_update (1.0);
g_free (data);
g_free (byteline);
g_free (bitline);
if (err)
g_message ("EOF encountered on reading");
g_object_unref (buffer);
return (err ? NULL : image);
}
/* Write out the PostScript file header */
static gboolean
save_ps_header (GOutputStream *output,
GFile *file,
GObject *config,
GError **error)
{
gchar *basename = g_path_get_basename (pika_file_get_utf8_name (file));
gboolean eps = FALSE;
gboolean level2 = FALSE;
time_t cutime = time (NULL);
g_object_get (config,
"eps-flag", &eps,
"level", &level2,
NULL);
if (! print (output, error,
"%%!PS-Adobe-3.0%s\n", eps ? " EPSF-3.0" : ""))
goto fail;
if (! print (output, error,
"%%%%Creator: PIKA PostScript file plug-in V %4.2f "
"by Peter Kirchgessner\n", VERSION))
goto fail;
if (! print (output, error,
"%%%%Title: %s\n"
"%%%%CreationDate: %s"
"%%%%DocumentData: Clean7Bit\n",
basename, ctime (&cutime)))
goto fail;
if (eps || level2)
if (! print (output, error,"%%%%LanguageLevel: 2\n"))
goto fail;
if (! print (output, error, "%%%%Pages: 1\n"))
goto fail;
g_free (basename);
return TRUE;
fail:
g_free (basename);
return FALSE;
}
/* Write out transformation for image */
static gboolean
save_ps_setup (GOutputStream *output,
PikaDrawable *drawable,
gint width,
gint height,
GObject *config,
gint bpp,
GError **error)
{
gdouble config_width;
gdouble config_height;
gdouble x_offset, y_offset, x_size, y_size;
gdouble urx, ury;
gdouble width_inch, height_inch;
gdouble f1, f2, dx, dy;
gint rotation;
gint xtrans, ytrans;
gint i_urx, i_ury;
gint preview_size;
gboolean unit_mm;
gboolean keep_ratio;
gboolean show_preview;
gboolean level2;
gchar tmpbuf1[G_ASCII_DTOSTR_BUF_SIZE];
gchar tmpbuf2[G_ASCII_DTOSTR_BUF_SIZE];
/* initialize */
g_object_get (config,
"width", &config_width,
"height", &config_height,
"x-offset", &x_offset,
"y-offset", &y_offset,
"unit", &unit_mm,
"keep-ratio", &keep_ratio,
"level", &level2,
"rotation", &rotation,
"show-preview", &show_preview,
"preview", &preview_size,
NULL);
dx = 0.0;
dy = 0.0;
width_inch = fabs (config_width);
height_inch = fabs (config_height);
if (unit_mm)
{
x_offset /= 25.4; y_offset /= 25.4;
width_inch /= 25.4; height_inch /= 25.4;
}
if (keep_ratio) /* Proportions to keep ? */
{ /* Fit the image into the allowed size */
f1 = width_inch / (gint) width;
f2 = height_inch / (gint) height;
if (f1 < f2)
height_inch = width_inch * (gdouble) height / (gdouble) width;
else
width_inch = fabs (height_inch) * (gdouble) width / (gdouble) height;
}
if ((rotation == 0) || (rotation == 180))
{
x_size = width_inch;
y_size = height_inch;
}
else
{
y_size = width_inch;
x_size = height_inch;
}
/* Round up upper right corner only for non-integer values */
urx = (x_offset + x_size) * 72.0;
ury = (y_offset + y_size) * 72.0;
i_urx = (gint) urx;
i_ury = (gint) ury;
if (urx != (gdouble) i_urx) i_urx++; /* Check for non-integer value */
if (ury != (gdouble) i_ury) i_ury++;
if (! print (output, error,
"%%%%BoundingBox: %d %d %d %d\n"
"%%%%EndComments\n",
(gint) (x_offset * 72.0), (gint) (y_offset * 72.0), i_urx, i_ury))
return FALSE;
if (show_preview && (preview_size > 0))
{
if (! save_ps_preview (output, drawable, config, error))
return FALSE;
}
if (! print (output, error,
"%%%%BeginProlog\n"
"%% Use own dictionary to avoid conflicts\n"
"10 dict begin\n"
"%%%%EndProlog\n"
"%%%%Page: 1 1\n"
"%% Translate for offset\n"
"%s %s translate\n",
g_ascii_dtostr (tmpbuf1, sizeof (tmpbuf1), x_offset * 72.0),
g_ascii_dtostr (tmpbuf2, sizeof (tmpbuf2), y_offset * 72.0)))
return FALSE;
/* Calculate translation to startpoint of first scanline */
switch (rotation)
{
case 0: dx = 0.0; dy = y_size * 72.0;
break;
case 90: dx = dy = 0.0;
break;
case 180: dx = x_size * 72.0; dy = 0.0;
break;
case 270: dx = x_size * 72.0; dy = y_size * 72.0;
break;
}
if ((dx != 0.0) || (dy != 0.0))
{
if (! print (output, error,
"%% Translate to begin of first scanline\n"
"%s %s translate\n",
g_ascii_dtostr (tmpbuf1, sizeof (tmpbuf1), dx),
g_ascii_dtostr (tmpbuf2, sizeof (tmpbuf2), dy)))
return FALSE;
}
if (rotation)
if (! print (output, error, "%d rotate\n", (gint) rotation))
return FALSE;
if (! print (output, error,
"%s %s scale\n",
g_ascii_dtostr (tmpbuf1, sizeof (tmpbuf1), 72.0 * width_inch),
g_ascii_dtostr (tmpbuf2, sizeof (tmpbuf2), -72.0 * height_inch)))
return FALSE;
/* Write the PostScript procedures to read the image */
if (! level2)
{
if (! print (output, error,
"%% Variable to keep one line of raster data\n"))
return FALSE;
if (bpp == 1)
{
if (! print (output, error,
"/scanline %d string def\n", ((gint) width + 7) / 8))
return FALSE;
}
else
{
if (! print (output, error,
"/scanline %d %d mul string def\n",
(gint) width, bpp / 8))
return FALSE;
}
}
if (! print (output, error,
"%% Image geometry\n%d %d %d\n"
"%% Transformation matrix\n",
(gint) width, (gint) height, (bpp == 1) ? 1 : 8))
return FALSE;
xtrans = ytrans = 0;
if (config_width < 0.0)
{
width = -width;
xtrans = -width;
}
if (config_height < 0.0)
{
height = -height;
ytrans = -height;
}
if (! print (output, error,
"[ %d 0 0 %d %d %d ]\n", (gint) width, (gint) height, xtrans, ytrans))
return FALSE;
return TRUE;
}
static gboolean
save_ps_trailer (GOutputStream *output,
GError **error)
{
return print (output, error,
"%%%%Trailer\n"
"end\n%%%%EOF\n");
}
/* Do a Floyd-Steinberg dithering on a grayscale scanline. */
/* linecount must keep the counter for the actual scanline (0, 1, 2, ...). */
/* If linecount is less than zero, all used memory is freed. */
static void
dither_grey (const guchar *grey,
guchar *bw,
gint npix,
gint linecount)
{
static gboolean do_init_arrays = TRUE;
static gint *fs_error = NULL;
static gint limit[1278];
static gint east_error[256];
static gint seast_error[256];
static gint south_error[256];
static gint swest_error[256];
const guchar *greyptr;
guchar *bwptr, mask;
gint *fse;
gint x, greyval, fse_inline;
if (linecount <= 0)
{
g_free (fs_error);
if (linecount < 0)
return;
fs_error = g_new0 (gint, npix + 2);
/* Initialize some arrays that speed up dithering */
if (do_init_arrays)
{
gint i;
do_init_arrays = FALSE;
for (i = 0, x = -511; x <= 766; i++, x++)
limit[i] = (x < 0) ? 0 : ((x > 255) ? 255 : x);
for (greyval = 0; greyval < 256; greyval++)
{
east_error[greyval] = (greyval < 128) ?
((greyval * 79) >> 8) : (((greyval - 255) * 79) >> 8);
seast_error[greyval] = (greyval < 128) ?
((greyval * 34) >> 8) : (((greyval - 255) * 34) >> 8);
south_error[greyval] = (greyval < 128) ?
((greyval * 56) >> 8) : (((greyval - 255) * 56) >> 8);
swest_error[greyval] = (greyval < 128) ?
((greyval * 12) >> 8) : (((greyval - 255) * 12) >> 8);
}
}
}
g_return_if_fail (fs_error != NULL);
memset (bw, 0, (npix + 7) / 8); /* Initialize with white */
greyptr = grey;
bwptr = bw;
mask = 0x80;
fse_inline = fs_error[1];
for (x = 0, fse = fs_error + 1; x < npix; x++, fse++)
{
greyval =
limit[*(greyptr++) + fse_inline + 512]; /* 0 <= greyval <= 255 */
if (greyval < 128)
*bwptr |= mask; /* Set a black pixel */
/* Error distribution */
fse_inline = east_error[greyval] + fse[1];
fse[1] = seast_error[greyval];
fse[0] += south_error[greyval];
fse[-1] += swest_error[greyval];
mask >>= 1; /* Get mask for next b/w-pixel */
if (!mask)
{
mask = 0x80;
bwptr++;
}
}
}
/* Write a device independent screen preview */
static gboolean
save_ps_preview (GOutputStream *output,
PikaDrawable *drawable,
GObject *config,
GError **error)
{
PikaImageType drawable_type;
GeglBuffer *buffer = NULL;
const Babl *format;
gint bpp;
guchar *bwptr, *greyptr;
gint width, height, x, y, nbsl, out_count;
gint nchar_pl = 72, src_y;
gdouble f1, f2;
guchar *grey, *bw, *src_row, *src_ptr;
guchar *cmap;
gint ncols, cind;
gint preview_size;
g_object_get (config,
"preview", &preview_size,
NULL);
if (preview_size <= 0)
return TRUE;
buffer = pika_drawable_get_buffer (drawable);
cmap = NULL;
drawable_type = pika_drawable_type (drawable);
switch (drawable_type)
{
case PIKA_GRAY_IMAGE:
format = babl_format ("Y' u8");
break;
case PIKA_INDEXED_IMAGE:
cmap = pika_image_get_colormap (pika_item_get_image (PIKA_ITEM (drawable)),
NULL,
&ncols);
format = pika_drawable_get_format (drawable);
break;
case PIKA_RGB_IMAGE:
default:
format = babl_format ("R'G'B' u8");
break;
}
bpp = babl_format_get_bytes_per_pixel (format);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
/* Calculate size of preview */
if ((width > preview_size) ||
(height > preview_size))
{
f1 = (gdouble) preview_size / (gdouble) width;
f2 = (gdouble) preview_size / (gdouble) height;
if (f1 < f2)
{
width = preview_size;
height *= f1;
if (height <= 0)
height = 1;
}
else
{
height = preview_size;
width *= f1;
if (width <= 0)
width = 1;
}
}
nbsl = (width + 7) / 8; /* Number of bytes per scanline in bitmap */
grey = g_new (guchar, width);
bw = g_new (guchar, nbsl);
src_row = g_new (guchar, gegl_buffer_get_width (buffer) * bpp);
if (! print (output, error,
"%%%%BeginPreview: %d %d 1 %d\n",
width, height,
((nbsl * 2 + nchar_pl - 1) / nchar_pl) * height))
goto fail;
for (y = 0; y < height; y++)
{
/* Get a scanline from the input image and scale it to the desired
width */
src_y = (y * gegl_buffer_get_height (buffer)) / height;
gegl_buffer_get (buffer,
GEGL_RECTANGLE (0, src_y,
gegl_buffer_get_width (buffer), 1),
1.0, format, src_row,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
greyptr = grey;
if (bpp == 3) /* RGB-image */
{
for (x = 0; x < width; x++)
{ /* Convert to grey */
src_ptr = src_row + ((x * gegl_buffer_get_width (buffer)) / width) * 3;
*(greyptr++) = (3*src_ptr[0] + 6*src_ptr[1] + src_ptr[2]) / 10;
}
}
else if (cmap) /* Indexed image */
{
for (x = 0; x < width; x++)
{
src_ptr = src_row + ((x * gegl_buffer_get_width (buffer)) / width);
cind = *src_ptr; /* Get color index and convert to grey */
src_ptr = (cind >= ncols) ? cmap : (cmap + 3*cind);
*(greyptr++) = (3*src_ptr[0] + 6*src_ptr[1] + src_ptr[2]) / 10;
}
}
else /* Grey image */
{
for (x = 0; x < width; x++)
*(greyptr++) = *(src_row + ((x * gegl_buffer_get_width (buffer)) / width));
}
/* Now we have a grayscale line for the desired width. */
/* Dither it to b/w */
dither_grey (grey, bw, width, y);
/* Write out the b/w line */
out_count = 0;
bwptr = bw;
for (x = 0; x < nbsl; x++)
{
if (out_count == 0)
if (! print (output, error, "%% "))
goto fail;
if (! print (output, error, "%02x", *(bwptr++)))
goto fail;
out_count += 2;
if (out_count >= nchar_pl)
{
if (! print (output, error, "\n"))
goto fail;
out_count = 0;
}
}
if (! print (output, error, "\n"))
goto fail;
if ((y % 20) == 0)
pika_progress_update ((gdouble) y / (gdouble) height);
}
pika_progress_update (1.0);
if (! print (output, error, "%%%%EndPreview\n"))
goto fail;
dither_grey (grey, bw, width, -1);
g_free (src_row);
g_free (bw);
g_free (grey);
g_object_unref (buffer);
return TRUE;
fail:
g_free (src_row);
g_free (bw);
g_free (grey);
g_object_unref (buffer);
return FALSE;
}
static gboolean
save_gray (GOutputStream *output,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error)
{
GeglBuffer *buffer = NULL;
const Babl *format;
gboolean level2;
gint bpp;
gint height, width, i, j;
gint tile_height;
guchar *data;
guchar *src;
guchar *packb = NULL;
g_object_get (config,
"level", &level2,
NULL);
buffer = pika_drawable_get_buffer (drawable);
format = babl_format ("Y' u8");
bpp = babl_format_get_bytes_per_pixel (format);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
tile_height = pika_tile_height ();
/* allocate a buffer for retrieving information from the pixel region */
src = data = (guchar *) g_malloc (tile_height * width * bpp);
/* Set up transformation in PostScript */
if (! save_ps_setup (output, drawable, width, height, config, 1 * 8, error))
goto fail;
/* Write read image procedure */
if (! level2)
{
if (! print (output, error,
"{ currentfile scanline readhexstring pop }\n"))
goto fail;
}
else
{
if (! print (output, error,
"currentfile /ASCII85Decode filter /RunLengthDecode filter\n"))
goto fail;
ascii85_init ();
/* Allocate buffer for packbits data. Worst case: Less than 1% increase */
packb = (guchar *) g_malloc ((width * 105) / 100 + 2);
}
if (! ps_begin_data (output, error))
goto fail;
if (! print (output, error, "image\n"))
goto fail;
#define GET_GRAY_TILE(begin) \
{ gint scan_lines; \
scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, scan_lines), \
1.0, format, begin, \
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); \
src = begin; }
for (i = 0; i < height; i++)
{
if ((i % tile_height) == 0)
GET_GRAY_TILE (data); /* Get more data */
if (! level2)
{
for (j = 0; j < width; j++)
{
if (! print (output, error, "%c", hex[(*src) >> 4]))
goto fail;
if (! print (output, error, "%c", hex[(*(src++)) & 0x0f]))
goto fail;
if (((j + 1) % 39) == 0)
if (! print (output, error, "\n"))
goto fail;
}
if (! print (output, error, "\n"))
goto fail;
}
else
{
gint nout;
compress_packbits (width, src, &nout, packb);
if (! ascii85_nout (output, nout, packb, error))
goto fail;
src += width;
}
if ((i % 20) == 0)
pika_progress_update ((gdouble) i / (gdouble) height);
}
pika_progress_update (1.0);
if (level2)
{
/* Write EOD of RunLengthDecode filter */
if (! ascii85_out (output, 128, error))
goto fail;
if (! ascii85_done (output, error))
goto fail;
}
if (! ps_end_data (output, error))
return FALSE;
if (! print (output, error, "showpage\n"))
goto fail;
g_free (data);
g_free (packb);
g_object_unref (buffer);
return TRUE;
fail:
g_free (data);
g_free (packb);
g_object_unref (buffer);
return FALSE;
#undef GET_GRAY_TILE
}
static gboolean
save_bw (GOutputStream *output,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error)
{
GeglBuffer *buffer = NULL;
const Babl *format;
gboolean level2;
gint bpp;
gint height, width, i, j;
gint ncols, nbsl, nwrite;
gint tile_height;
guchar *cmap, *ct;
guchar *data, *src;
guchar *packb = NULL;
guchar *scanline, *dst, mask;
guchar *hex_scanline;
g_object_get (config,
"level", &level2,
NULL);
cmap = pika_image_get_colormap (image, NULL, &ncols);
buffer = pika_drawable_get_buffer (drawable);
format = pika_drawable_get_format (drawable);
bpp = babl_format_get_bytes_per_pixel (format);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
tile_height = pika_tile_height ();
/* allocate a buffer for retrieving information from the pixel region */
src = data = g_new (guchar, tile_height * width * bpp);
nbsl = (width + 7) / 8;
scanline = g_new (guchar, nbsl + 1);
hex_scanline = g_new (guchar, (nbsl + 1) * 2);
/* Set up transformation in PostScript */
if (! save_ps_setup (output, drawable, width, height, config, 1, error))
goto fail;
/* Write read image procedure */
if (! level2)
{
if (! print (output, error,
"{ currentfile scanline readhexstring pop }\n"))
goto fail;
}
else
{
if (! print (output, error,
"currentfile /ASCII85Decode filter /RunLengthDecode filter\n"))
goto fail;
ascii85_init ();
/* Allocate buffer for packbits data. Worst case: Less than 1% increase */
packb = g_new (guchar, ((nbsl+1) * 105) / 100 + 2);
}
if (! ps_begin_data (output, error))
goto fail;
if (! print (output, error, "image\n"))
goto fail;
#define GET_BW_TILE(begin) \
{ gint scan_lines; \
scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, scan_lines), \
1.0, format, begin, \
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); \
src = begin; }
for (i = 0; i < height; i++)
{
if ((i % tile_height) == 0)
GET_BW_TILE (data); /* Get more data */
dst = scanline;
memset (dst, 0, nbsl);
mask = 0x80;
/* Build a bitmap for a scanline */
for (j = 0; j < width; j++)
{
ct = cmap + *(src++)*3;
if (ct[0] || ct[1] || ct[2])
*dst |= mask;
if (mask == 0x01)
{
mask = 0x80; dst++;
}
else
{
mask >>= 1;
}
}
if (! level2)
{
/* Convert to hexstring */
for (j = 0; j < nbsl; j++)
{
hex_scanline[j * 2] = (guchar) hex[scanline[j] >> 4];
hex_scanline[j * 2 + 1] = (guchar) hex[scanline[j] & 0x0f];
}
/* Write out hexstring */
j = nbsl * 2;
dst = hex_scanline;
while (j > 0)
{
nwrite = (j > 78) ? 78 : j;
if (! g_output_stream_write_all (output,
dst, nwrite, NULL,
NULL, error))
goto fail;
if (! print (output, error, "\n"))
goto fail;
j -= nwrite;
dst += nwrite;
}
}
else
{
gint nout;
compress_packbits (nbsl, scanline, &nout, packb);
if (! ascii85_nout (output, nout, packb, error))
goto fail;
}
if ((i % 20) == 0)
pika_progress_update ((gdouble) i / (gdouble) height);
}
pika_progress_update (1.0);
if (level2)
{
/* Write EOD of RunLengthDecode filter */
if (! ascii85_out (output, 128, error))
goto fail;
if (! ascii85_done (output, error))
goto fail;
}
if (! ps_end_data (output, error))
goto fail;
if (! print (output, error, "showpage\n"))
goto fail;
g_free (hex_scanline);
g_free (scanline);
g_free (data);
g_free (packb);
g_object_unref (buffer);
return TRUE;
fail:
g_free (hex_scanline);
g_free (scanline);
g_free (data);
g_free (packb);
g_object_unref (buffer);
return FALSE;
#undef GET_BW_TILE
}
static gboolean
save_index (GOutputStream *output,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error)
{
GeglBuffer *buffer = NULL;
const Babl *format;
gboolean level2;
gint bpp;
gint height, width, i, j;
gint ncols, bw;
gint tile_height;
guchar *cmap, *cmap_start;
guchar *data, *src;
guchar *packb = NULL;
guchar *plane = NULL;
gchar coltab[256 * 6], *ct;
g_object_get (config,
"level", &level2,
NULL);
cmap = cmap_start = pika_image_get_colormap (image, NULL, &ncols);
ct = coltab;
bw = 1;
for (j = 0; j < 256; j++)
{
if (j >= ncols)
{
memset (ct, 0, 6);
ct += 6;
}
else
{
bw &= ((cmap[0] == 0) && (cmap[1] == 0) && (cmap[2] == 0)) ||
((cmap[0] == 255) && (cmap[1] == 255) && (cmap[2] == 255));
*(ct++) = (guchar) hex[(*cmap) >> 4];
*(ct++) = (guchar) hex[(*(cmap++)) & 0x0f];
*(ct++) = (guchar) hex[(*cmap) >> 4];
*(ct++) = (guchar) hex[(*(cmap++)) & 0x0f];
*(ct++) = (guchar) hex[(*cmap) >> 4];
*(ct++) = (guchar) hex[(*(cmap++)) & 0x0f];
}
}
if (bw)
return save_bw (output, image, drawable, config, error);
buffer = pika_drawable_get_buffer (drawable);
format = pika_drawable_get_format (drawable);
bpp = babl_format_get_bytes_per_pixel (format);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
tile_height = pika_tile_height ();
/* allocate a buffer for retrieving information from the pixel region */
src = data = (guchar *) g_malloc (tile_height * width * bpp);
/* Set up transformation in PostScript */
if (! save_ps_setup (output, drawable, width, height, config, 3 * 8, error))
goto fail;
/* Write read image procedure */
if (! level2)
{
if (! print (output, error,
"{ currentfile scanline readhexstring pop } false 3\n"))
goto fail;
}
else
{
if (! print (output, error,
"%% Strings to hold RGB-samples per scanline\n"
"/rstr %d string def\n"
"/gstr %d string def\n"
"/bstr %d string def\n",
width, width, width))
goto fail;
if (! print (output, error,
"{currentfile /ASCII85Decode filter /RunLengthDecode filter\
rstr readstring pop}\n"
"{currentfile /ASCII85Decode filter /RunLengthDecode filter\
gstr readstring pop}\n"
"{currentfile /ASCII85Decode filter /RunLengthDecode filter\
bstr readstring pop}\n"
"true 3\n"))
goto fail;
/* Allocate buffer for packbits data. Worst case: Less than 1% increase */
packb = (guchar *) g_malloc ((width * 105) / 100 + 2);
plane = (guchar *) g_malloc (width);
}
if (! ps_begin_data (output, error))
goto fail;
if (! print (output, error, "colorimage\n"))
goto fail;
#define GET_INDEX_TILE(begin) \
{ gint scan_lines; \
scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, scan_lines), \
1.0, format, begin, \
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); \
src = begin; }
for (i = 0; i < height; i++)
{
if ((i % tile_height) == 0)
GET_INDEX_TILE (data); /* Get more data */
if (! level2)
{
for (j = 0; j < width; j++)
{
if (! g_output_stream_write_all (output,
coltab + (*(src++)) * 6, 6, NULL,
NULL, error))
goto fail;
if (((j + 1) % 13) == 0)
if (! print (output, error, "\n"))
goto fail;
}
if (! print (output, error, "\n"))
goto fail;
}
else
{
gint rgb;
for (rgb = 0; rgb < 3; rgb++)
{
guchar *src_ptr = src;
guchar *plane_ptr = plane;
gint nout;
for (j = 0; j < width; j++)
*(plane_ptr++) = cmap_start[3 * *(src_ptr++) + rgb];
compress_packbits (width, plane, &nout, packb);
ascii85_init ();
if (! ascii85_nout (output, nout, packb, error))
goto fail;
/* Write EOD of RunLengthDecode filter */
if (! ascii85_out (output, 128, error))
goto fail;
if (! ascii85_done (output, error))
goto fail;
}
src += width;
}
if ((i % 20) == 0)
pika_progress_update ((gdouble) i / (gdouble) height);
}
pika_progress_update (1.0);
if (! ps_end_data (output, error))
goto fail;
if (! print (output, error, "showpage\n"))
goto fail;
g_free (data);
g_free (packb);
g_free (plane);
g_object_unref (buffer);
return TRUE;
fail:
g_free (data);
g_free (packb);
g_free (plane);
g_object_unref (buffer);
return FALSE;
#undef GET_INDEX_TILE
}
static gboolean
save_rgb (GOutputStream *output,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error)
{
GeglBuffer *buffer = NULL;
const Babl *format;
gboolean level2;
gint bpp;
gint height, width, tile_height;
gint i, j;
guchar *data, *src;
guchar *packb = NULL;
guchar *plane = NULL;
g_object_get (config,
"level", &level2,
NULL);
buffer = pika_drawable_get_buffer (drawable);
format = babl_format ("R'G'B' u8");
bpp = babl_format_get_bytes_per_pixel (format);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
tile_height = pika_tile_height ();
/* allocate a buffer for retrieving information from the pixel region */
src = data = g_new (guchar, tile_height * width * bpp);
/* Set up transformation in PostScript */
if (! save_ps_setup (output, drawable, width, height, config, 3 * 8, error))
goto fail;
/* Write read image procedure */
if (! level2)
{
if (! print (output, error,
"{ currentfile scanline readhexstring pop } false 3\n"))
goto fail;
}
else
{
if (! print (output, error,
"%% Strings to hold RGB-samples per scanline\n"
"/rstr %d string def\n"
"/gstr %d string def\n"
"/bstr %d string def\n",
width, width, width))
goto fail;
if (! print (output, error,
"{currentfile /ASCII85Decode filter /RunLengthDecode filter\
rstr readstring pop}\n"
"{currentfile /ASCII85Decode filter /RunLengthDecode filter\
gstr readstring pop}\n"
"{currentfile /ASCII85Decode filter /RunLengthDecode filter\
bstr readstring pop}\n"
"true 3\n"))
goto fail;
/* Allocate buffer for packbits data. Worst case: Less than 1% increase */
packb = g_new (guchar, (width * 105) / 100 + 2);
plane = g_new (guchar, width);
}
if (! ps_begin_data (output, error))
goto fail;
if (! print (output, error, "colorimage\n"))
goto fail;
#define GET_RGB_TILE(begin) \
{ gint scan_lines; \
scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, scan_lines), \
1.0, format, begin, \
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); \
src = begin; }
for (i = 0; i < height; i++)
{
if ((i % tile_height) == 0)
GET_RGB_TILE (data); /* Get more data */
if (! level2)
{
for (j = 0; j < width; j++)
{
if (! print (output, error, "%c",
hex[(*src) >> 4])) /* Red */
goto fail;
if (! print (output, error, "%c",
hex[(*(src++)) & 0x0f]))
goto fail;
if (! print (output, error, "%c",
hex[(*src) >> 4])) /* Green */
goto fail;
if (! print (output, error, "%c",
hex[(*(src++)) & 0x0f]))
goto fail;
if (! print (output, error, "%c",
hex[(*src) >> 4])) /* Blue */
goto fail;
if (! print (output, error, "%c",
hex[(*(src++)) & 0x0f]))
goto fail;
if (((j+1) % 13) == 0)
if (! print (output, error, "\n"))
goto fail;
}
if (! print (output, error, "\n"))
goto fail;
}
else
{
gint rgb;
for (rgb = 0; rgb < 3; rgb++)
{
guchar *src_ptr = src + rgb;
guchar *plane_ptr = plane;
gint nout;
for (j = 0; j < width; j++)
{
*(plane_ptr++) = *src_ptr;
src_ptr += 3;
}
compress_packbits (width, plane, &nout, packb);
ascii85_init ();
if (! ascii85_nout (output, nout, packb, error))
goto fail;
/* Write EOD of RunLengthDecode filter */
if (! ascii85_out (output, 128, error))
goto fail;
if (! ascii85_done (output, error))
goto fail;
}
src += 3 * width;
}
if ((i % 20) == 0)
pika_progress_update ((gdouble) i / (gdouble) height);
}
pika_progress_update (1.0);
if (! ps_end_data (output, error))
goto fail;
if (! print (output, error, "showpage\n"))
goto fail;
g_free (data);
g_free (packb);
g_free (plane);
g_object_unref (buffer);
return TRUE;
fail:
g_free (data);
g_free (packb);
g_free (plane);
g_object_unref (buffer);
return FALSE;
#undef GET_RGB_TILE
}
static gboolean
print (GOutputStream *output,
GError **error,
const gchar *format,
...)
{
va_list args;
gboolean success;
va_start (args, format);
success = g_output_stream_vprintf (output, NULL, NULL,
error, format, args);
va_end (args);
return success;
}
/* Load interface functions */
static gint32
count_ps_pages (GFile *file)
{
FILE *psfile;
gchar *extension;
gchar buf[1024];
gint32 num_pages = 0;
gint32 showpage_count = 0;
extension = strrchr (g_file_peek_path (file), '.');
if (extension)
{
extension = g_ascii_strdown (extension + 1, -1);
if (strcmp (extension, "eps") == 0)
{
g_free (extension);
return 1;
}
g_free (extension);
}
psfile = g_fopen (g_file_peek_path (file), "r");
if (psfile == NULL)
{
g_message (_("Could not open '%s' for reading: %s"),
pika_file_get_utf8_name (file), g_strerror (errno));
return 0;
}
while (num_pages == 0 && !feof (psfile))
{
fgets (buf, sizeof (buf), psfile);
if (strncmp (buf + 2, "Pages:", 6) == 0)
sscanf (buf + strlen ("%%Pages:"), "%d", &num_pages);
else if (strncmp (buf, "showpage", 8) == 0)
showpage_count++;
}
if (feof (psfile) && num_pages < 1 && showpage_count > 0)
num_pages = showpage_count;
fclose (psfile);
return num_pages;
}
static gboolean
load_dialog (GFile *file,
PikaProcedure *procedure,
GObject *config)
{
GtkWidget *dialog;
GtkListStore *store;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *spinbutton;
GtkWidget *target = NULL;
GtkWidget *selector = NULL;
gint32 page_count;
gchar *range = NULL;
gboolean run;
page_count = count_ps_pages (file);
pika_ui_init (PLUG_IN_BINARY);
dialog = pika_procedure_dialog_new (PIKA_PROCEDURE (procedure),
PIKA_PROCEDURE_CONFIG (config),
NULL);
pika_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
pika_window_set_transient (GTK_WINDOW (dialog));
if (page_count > 1)
{
selector = pika_page_selector_new ();
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
selector, TRUE, TRUE, 0);
pika_page_selector_set_n_pages (PIKA_PAGE_SELECTOR (selector),
page_count);
pika_page_selector_set_target (PIKA_PAGE_SELECTOR (selector),
ps_pagemode);
gtk_widget_show (selector);
g_signal_connect_swapped (selector, "activate",
G_CALLBACK (gtk_window_activate_default),
dialog);
}
/* Rendering */
/* Resolution / Width / Height */
pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"rendering-options",
"resolution",
"width",
"height",
NULL);
spinbutton =
pika_procedure_dialog_get_scale_entry (PIKA_PROCEDURE_DIALOG (dialog),
"resolution", 1.0);
pika_procedure_dialog_get_scale_entry (PIKA_PROCEDURE_DIALOG (dialog),
"width", 1.0);
pika_procedure_dialog_get_scale_entry (PIKA_PROCEDURE_DIALOG (dialog),
"height", 1.0);
g_signal_connect (spinbutton, "value-changed",
G_CALLBACK (resolution_change_callback),
config);
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
"rendering-title", _("Rendering"));
pika_procedure_dialog_fill_frame (PIKA_PROCEDURE_DIALOG (dialog),
"rendering-frame", "rendering-title",
FALSE, "rendering-options");
/* Coloring */
store = pika_int_store_new (_("B/W"), 4,
_("Gray"), 5,
_("Color"), 6,
_("Automatic"), 7,
NULL);
pika_procedure_dialog_get_int_radio (PIKA_PROCEDURE_DIALOG (dialog),
"coloring", PIKA_INT_STORE (store));
/* Text antialiasing */
store = pika_int_store_new (_("None"), 1,
_("Weak"), 2,
_("Strong"), 4,
NULL);
pika_procedure_dialog_get_int_radio (PIKA_PROCEDURE_DIALOG (dialog),
"text-alpha-bits", PIKA_INT_STORE (store));
/* Graphics antialiasing */
store = pika_int_store_new (_("None"), 1,
_("Weak"), 2,
_("Strong"), 4,
NULL);
pika_procedure_dialog_get_int_radio (PIKA_PROCEDURE_DIALOG (dialog),
"graphoc-alpha-bits", PIKA_INT_STORE (store));
vbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"rendering-box",
"rendering-frame",
"check-bbox",
NULL);
if (page_count == 0)
{
GtkWidget *grid;
GtkWidget *entry = NULL;
grid = gtk_grid_new ();
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_box_pack_start (GTK_BOX (vbox), grid, FALSE, FALSE, 0);
gtk_widget_show (grid);
entry = pika_procedure_dialog_get_widget (PIKA_PROCEDURE_DIALOG (dialog),
"pages", GTK_TYPE_ENTRY);
gtk_widget_set_size_request (entry, 80, -1);
pika_grid_attach_aligned (GTK_GRID (grid), 0, 0,
_("Pages:"), 0.0, 0.5,
entry, 1);
pika_help_set_help_data (GTK_WIDGET (entry),
_("Pages to load (e.g.: 1-4 or 1,3,5-7)"),
NULL);
target = pika_enum_combo_box_new (PIKA_TYPE_PAGE_SELECTOR_TARGET);
gtk_combo_box_set_active (GTK_COMBO_BOX (target), (int) ps_pagemode);
pika_grid_attach_aligned (GTK_GRID (grid), 0, 1,
_("Open as"), 0.0, 0.5,
target, 1);
}
/* Dialog formatting */
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"ps-top-row",
"rendering-box",
"coloring",
NULL);
gtk_box_set_spacing (GTK_BOX (hbox), 12);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_widget_set_margin_bottom (hbox, 12);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"ps-bottom-row",
"text-alpha-bits",
"graphoc-alpha-bits",
NULL);
gtk_box_set_spacing (GTK_BOX (hbox), 12);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_widget_set_margin_bottom (hbox, 12);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
pika_procedure_dialog_fill (PIKA_PROCEDURE_DIALOG (dialog),
"ps-top-row",
"ps-bottom-row",
NULL);
gtk_widget_show (dialog);
run = pika_procedure_dialog_run (PIKA_PROCEDURE_DIALOG (dialog));
if (selector)
{
range = pika_page_selector_get_selected_range (PIKA_PAGE_SELECTOR (selector));
if (strlen (range) < 1)
{
pika_page_selector_select_all (PIKA_PAGE_SELECTOR (selector));
range = pika_page_selector_get_selected_range (PIKA_PAGE_SELECTOR (selector));
}
g_object_set (config,
"pages", range,
NULL);
ps_pagemode = pika_page_selector_get_target (PIKA_PAGE_SELECTOR (selector));
}
else if (page_count == 0)
{
ps_pagemode = gtk_combo_box_get_active (GTK_COMBO_BOX (target));
}
else
{
g_object_set (config,
"pages", "1",
NULL);
ps_pagemode = PIKA_PAGE_SELECTOR_TARGET_IMAGES;
}
gtk_widget_destroy (dialog);
return run;
}
/* Save interface functions */
static gboolean
save_dialog (PikaProcedure *procedure,
GObject *config,
PikaImage *image)
{
GtkWidget *dialog;
GtkListStore *store;
GtkWidget *toggle;
GtkWidget *frame;
GList *children;
GtkWidget *hbox, *vbox;
gboolean run;
dialog = pika_save_procedure_dialog_new (PIKA_SAVE_PROCEDURE (procedure),
PIKA_PROCEDURE_CONFIG (config),
image);
/* Image Size */
/* Width/Height/X-/Y-offset labels */
toggle = pika_procedure_dialog_get_widget (PIKA_PROCEDURE_DIALOG (dialog),
"keep-ratio", G_TYPE_NONE);
pika_help_set_help_data (toggle,
_("When toggled, the resulting image will be "
"scaled to fit into the given size without "
"changing the aspect ratio."),
"#keep_aspect_ratio"),
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
"image-title", _("Image Size"));
pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog), "image-box",
"width", "height", "x-offset", "y-offset",
"keep-ratio", NULL);
pika_procedure_dialog_fill_frame (PIKA_PROCEDURE_DIALOG (dialog),
"image-frame", "image-title",
FALSE, "image-box");
/* Unit */
store = pika_int_store_new (_("_Inch"), FALSE,
_("_Millimeter"), TRUE,
NULL);
frame = pika_procedure_dialog_get_int_radio (PIKA_PROCEDURE_DIALOG (dialog),
"unit", PIKA_INT_STORE (store));
vbox = gtk_bin_get_child (GTK_BIN (frame));
children = gtk_container_get_children (GTK_CONTAINER (vbox));
children = g_list_next (children);
toggle = GTK_WIDGET (children->data);
g_signal_connect (GTK_TOGGLE_BUTTON (toggle), "toggled",
G_CALLBACK (save_unit_toggle_update),
config);
/* Rotation */
store = pika_int_store_new (_("_0"), 0,
_("_90"), 90,
_("_180"), 180,
_("_270"), 270,
NULL);
pika_procedure_dialog_get_int_radio (PIKA_PROCEDURE_DIALOG (dialog),
"rotation", PIKA_INT_STORE (store));
/* Output */
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
"output-title", _("Output"));
pika_procedure_dialog_set_sensitive (PIKA_PROCEDURE_DIALOG (dialog),
"preview",
TRUE, config, "show-preview", FALSE);
pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog), "output-box",
"level", "eps-flag", "show-preview", "preview",
NULL);
pika_procedure_dialog_fill_frame (PIKA_PROCEDURE_DIALOG (dialog),
"output-frame", "output-title",
FALSE, "output-box");
/* Dialog Formatting */
vbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog), "left-column",
"image-frame", "unit",
NULL);
gtk_box_set_spacing (GTK_BOX (vbox), 12);
vbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog), "right-column",
"rotation", "output-frame",
NULL);
gtk_box_set_spacing (GTK_BOX (vbox), 12);
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog), "ps-hbox",
"left-column", "right-column",
NULL);
gtk_box_set_spacing (GTK_BOX (hbox), 12);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
pika_procedure_dialog_fill (PIKA_PROCEDURE_DIALOG (dialog),
"ps-hbox",
NULL);
gtk_widget_show (dialog);
run = pika_procedure_dialog_run (PIKA_PROCEDURE_DIALOG (dialog));
gtk_widget_destroy (dialog);
return run;
}
static void
save_unit_toggle_update (GtkWidget *widget,
gpointer data)
{
PikaProcedureConfig *config = PIKA_PROCEDURE_CONFIG (data);
gdouble factor;
gboolean unit_mm;
gdouble width;
gdouble height;
gdouble x_offset;
gdouble y_offset;
g_object_get (config,
"width", &width,
"height", &height,
"x-offset", &x_offset,
"y-offset", &y_offset,
NULL);
unit_mm = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget));
if (unit_mm)
factor = 25.4;
else
factor = 1.0 / 25.4;
g_object_set (config,
"width", width * factor,
"height", height * factor,
"x-offset", x_offset * factor,
"y-offset", y_offset * factor,
NULL);
}
static gboolean
resolution_change_callback (GtkWidget *adjustment,
gpointer data)
{
PikaProcedureConfig *config = PIKA_PROCEDURE_CONFIG (data);
gdouble ratio = 1.0;
gint old_resolution;
gdouble resolution;
gint width;
gint height;
g_object_get (config,
"resolution", &old_resolution,
"width", &width,
"height", &height,
NULL);
resolution = pika_label_spin_get_value (PIKA_LABEL_SPIN (adjustment));
if (old_resolution)
ratio = resolution / old_resolution;
width *= ratio;
height *= ratio;
g_object_set (config,
"width", width,
"height", height,
NULL);
return TRUE;
}
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