/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 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 .
*/
/* SVG loader plug-in
* (C) Copyright 2003 Dom Lachowicz
*
* Largely rewritten in September 2003 by Sven Neumann
*/
#include "config.h"
#include
#include
#include
#include "libgimp/gimp.h"
#include "libgimp/gimpui.h"
#include "libgimp/stdplugins-intl.h"
#define LOAD_PROC "file-svg-load"
#define LOAD_THUMB_PROC "file-svg-load-thumb"
#define PLUG_IN_BINARY "file-svg"
#define PLUG_IN_ROLE "gimp-file-svg"
#define SVG_VERSION "2.5.0"
#define SVG_DEFAULT_RESOLUTION 90.0
#define SVG_DEFAULT_SIZE 500
#define SVG_PREVIEW_SIZE 128
typedef struct
{
gdouble resolution;
gint width;
gint height;
gboolean import;
gboolean merge;
} SvgLoadVals;
static SvgLoadVals load_vals =
{
SVG_DEFAULT_RESOLUTION,
0,
0,
FALSE,
FALSE
};
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint32 load_image (const gchar *filename,
GError **error);
static GdkPixbuf * load_rsvg_pixbuf (const gchar *filename,
SvgLoadVals *vals,
GError **error);
static gboolean load_rsvg_size (const gchar *filename,
SvgLoadVals *vals,
GError **error);
static GimpPDBStatusType load_dialog (const gchar *filename,
GError **error);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL,
NULL,
query,
run,
};
MAIN ()
static void
query (void)
{
static const GimpParamDef load_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_STRING, "filename", "The name of the file to load" },
{ GIMP_PDB_STRING, "raw-filename", "The name of the file to load" },
{ GIMP_PDB_FLOAT, "resolution",
"Resolution to use for rendering the SVG (defaults to 90 dpi)" },
{ GIMP_PDB_INT32, "width",
"Width (in pixels) to load the SVG in. "
"(0 for original width, a negative width to specify a maximum width)" },
{ GIMP_PDB_INT32, "height",
"Height (in pixels) to load the SVG in. "
"(0 for original height, a negative width to specify a maximum height)"},
{ GIMP_PDB_INT32, "paths",
"Whether to not import paths (0), import paths individually (1) "
"or merge all imported paths (2)" }
};
static const GimpParamDef load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" }
};
static const GimpParamDef thumb_args[] =
{
{ GIMP_PDB_STRING, "filename", "The name of the file to load" },
{ GIMP_PDB_INT32, "thumb-size", "Preferred thumbnail size" }
};
static const GimpParamDef thumb_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Thumbnail image" },
{ GIMP_PDB_INT32, "image-width", "Width of full-sized image" },
{ GIMP_PDB_INT32, "image-height", "Height of full-sized image" }
};
gimp_install_procedure (LOAD_PROC,
"Loads files in the SVG file format",
"Renders SVG files to raster graphics using librsvg.",
"Dom Lachowicz, Sven Neumann",
"Dom Lachowicz ",
SVG_VERSION,
N_("SVG image"),
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (load_args),
G_N_ELEMENTS (load_return_vals),
load_args, load_return_vals);
gimp_register_file_handler_mime (LOAD_PROC, "image/svg+xml");
gimp_register_magic_load_handler (LOAD_PROC,
"svg", "",
"0,string,",
SVG_VERSION,
NULL,
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (thumb_args),
G_N_ELEMENTS (thumb_return_vals),
thumb_args, thumb_return_vals);
gimp_register_thumbnail_loader (LOAD_PROC, LOAD_THUMB_PROC);
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[4];
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GError *error = NULL;
INIT_I18N ();
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
if (strcmp (name, LOAD_PROC) == 0)
{
gimp_get_data (LOAD_PROC, &load_vals);
switch (run_mode)
{
case GIMP_RUN_NONINTERACTIVE:
if (nparams > 3) load_vals.resolution = param[3].data.d_float;
if (nparams > 4) load_vals.width = param[4].data.d_int32;
if (nparams > 5) load_vals.height = param[5].data.d_int32;
if (nparams > 6)
{
load_vals.import = param[6].data.d_int32 != FALSE;
load_vals.merge = param[6].data.d_int32 > TRUE;
}
break;
case GIMP_RUN_INTERACTIVE:
status = load_dialog (param[1].data.d_string, &error);
break;
case GIMP_RUN_WITH_LAST_VALS:
break;
}
/* Don't clamp this; insane values are probably not meant to be
* used as resolution anyway.
*/
if (load_vals.resolution < GIMP_MIN_RESOLUTION ||
load_vals.resolution > GIMP_MAX_RESOLUTION)
{
load_vals.resolution = SVG_DEFAULT_RESOLUTION;
}
if (status == GIMP_PDB_SUCCESS)
{
const gchar *filename = param[1].data.d_string;
gint32 image_ID = load_image (filename, &error);
if (image_ID != -1)
{
if (load_vals.import)
{
gint32 *vectors;
gint num_vectors;
gimp_vectors_import_from_file (image_ID, filename,
load_vals.merge, TRUE,
&num_vectors, &vectors);
if (num_vectors > 0)
g_free (vectors);
}
*nreturn_vals = 2;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_image = image_ID;
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
gimp_set_data (LOAD_PROC, &load_vals, sizeof (load_vals));
}
}
else if (strcmp (name, LOAD_THUMB_PROC) == 0)
{
if (nparams < 2)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
const gchar *filename = param[0].data.d_string;
gint width = 0;
gint height = 0;
gint32 image_ID;
if (load_rsvg_size (filename, &load_vals, NULL))
{
width = load_vals.width;
height = load_vals.height;
}
load_vals.resolution = SVG_DEFAULT_RESOLUTION;
load_vals.width = - param[1].data.d_int32;
load_vals.height = - param[1].data.d_int32;
image_ID = load_image (filename, &error);
if (image_ID != -1)
{
*nreturn_vals = 4;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_image = image_ID;
values[2].type = GIMP_PDB_INT32;
values[2].data.d_int32 = width;
values[3].type = GIMP_PDB_INT32;
values[3].data.d_int32 = height;
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
if (status != GIMP_PDB_SUCCESS && error)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_STRING;
values[1].data.d_string = error->message;
}
values[0].data.d_status = status;
}
static gint32
load_image (const gchar *filename,
GError **load_error)
{
gint32 image;
gint32 layer;
GdkPixbuf *pixbuf;
gint width;
gint height;
GError *error = NULL;
pixbuf = load_rsvg_pixbuf (filename, &load_vals, &error);
if (! pixbuf)
{
/* Do not rely on librsvg setting GError on failure! */
g_set_error (load_error,
error ? error->domain : 0, error ? error->code : 0,
_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (filename),
error ? error->message : _("Unknown reason"));
g_clear_error (&error);
return -1;
}
gimp_progress_init (_("Rendering SVG"));
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
image = gimp_image_new (width, height, GIMP_RGB);
gimp_image_undo_disable (image);
gimp_image_set_filename (image, filename);
gimp_image_set_resolution (image,
load_vals.resolution, load_vals.resolution);
layer = gimp_layer_new_from_pixbuf (image, _("Rendered SVG"), pixbuf,
100,
gimp_image_get_default_new_layer_mode (image),
0.0, 1.0);
gimp_image_insert_layer (image, layer, -1, 0);
gimp_image_undo_enable (image);
return image;
}
/* This is the callback used from load_rsvg_pixbuf(). */
static void
load_set_size_callback (gint *width,
gint *height,
gpointer data)
{
SvgLoadVals *vals = data;
if (*width < 1 || *height < 1)
{
*width = SVG_DEFAULT_SIZE;
*height = SVG_DEFAULT_SIZE;
}
if (!vals->width || !vals->height)
return;
/* either both arguments negative or none */
if ((vals->width * vals->height) < 0)
return;
if (vals->width > 0)
{
*width = vals->width;
*height = vals->height;
}
else
{
gdouble w = *width;
gdouble h = *height;
gdouble aspect = (gdouble) vals->width / (gdouble) vals->height;
if (aspect > (w / h))
{
*height = abs (vals->height);
*width = (gdouble) abs (vals->width) * (w / h) + 0.5;
}
else
{
*width = abs (vals->width);
*height = (gdouble) abs (vals->height) / (w / h) + 0.5;
}
vals->width = *width;
vals->height = *height;
}
}
/* This function renders a pixbuf from an SVG file according to vals. */
static GdkPixbuf *
load_rsvg_pixbuf (const gchar *filename,
SvgLoadVals *vals,
GError **error)
{
GdkPixbuf *pixbuf = NULL;
RsvgHandle *handle;
GIOChannel *io;
gchar *uri;
GIOStatus status = G_IO_STATUS_NORMAL;
gboolean success = TRUE;
io = g_io_channel_new_file (filename, "r", error);
if (!io)
return NULL;
g_io_channel_set_encoding (io, NULL, NULL);
handle = rsvg_handle_new ();
rsvg_handle_set_dpi (handle, vals->resolution);
/* set the base URI so that librsvg can resolve relative paths */
uri = g_filename_to_uri (filename, NULL, NULL);
if (uri)
{
gchar *p = strrchr (uri, '/');
if (p)
*p = '\0';
rsvg_handle_set_base_uri (handle, uri);
g_free (uri);
}
rsvg_handle_set_size_callback (handle, load_set_size_callback, vals, NULL);
while (success && status != G_IO_STATUS_EOF)
{
gchar buf[8192];
gsize len;
status = g_io_channel_read_chars (io, buf, sizeof (buf), &len, error);
switch (status)
{
case G_IO_STATUS_ERROR:
success = FALSE;
break;
case G_IO_STATUS_EOF:
success = rsvg_handle_close (handle, error);
break;
case G_IO_STATUS_NORMAL:
success = rsvg_handle_write (handle,
(const guchar *) buf, len, error);
break;
case G_IO_STATUS_AGAIN:
break;
}
}
g_io_channel_unref (io);
if (success)
pixbuf = rsvg_handle_get_pixbuf (handle);
g_object_unref (handle);
return pixbuf;
}
static GtkWidget *size_label = NULL;
/* This function retrieves the pixel size from an SVG file. Parsing
* stops after the first chunk that provided the parser with enough
* information to determine the size. This is usually the opening
*