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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
/*
* Copyright © 2004,2006 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Red Hat, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Red Hat, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Carl D. Worth <cworth@cworth.org>
*/
#include "cairo-boilerplate-private.h"
#if CAIRO_CAN_TEST_SVG_SURFACE
#include <cairo-svg.h>
#include <cairo-svg-surface-private.h>
#include <cairo-paginated-surface-private.h>
#if HAVE_SIGNAL_H
#include <stdlib.h>
#include <signal.h>
#endif
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#if ! CAIRO_HAS_RECORDING_SURFACE
#define CAIRO_SURFACE_TYPE_RECORDING CAIRO_INTERNAL_SURFACE_TYPE_RECORDING
#endif
static const cairo_user_data_key_t svg_closure_key;
typedef struct _svg_target_closure {
char *filename;
int width, height;
cairo_surface_t *target;
} svg_target_closure_t;
static cairo_surface_t *
_cairo_boilerplate_svg_create_surface (const char *name,
cairo_content_t content,
cairo_svg_version_t version,
double width,
double height,
double max_width,
double max_height,
cairo_boilerplate_mode_t mode,
void **closure)
{
svg_target_closure_t *ptc;
cairo_surface_t *surface;
cairo_status_t status;
*closure = ptc = xmalloc (sizeof (svg_target_closure_t));
ptc->width = ceil (width);
ptc->height = ceil (height);
xasprintf (&ptc->filename, "%s.out.svg", name);
xunlink (ptc->filename);
surface = cairo_svg_surface_create (ptc->filename, width, height);
if (cairo_surface_status (surface))
goto CLEANUP_FILENAME;
cairo_svg_surface_restrict_to_version (surface, version);
cairo_surface_set_fallback_resolution (surface, 72., 72.);
if (content == CAIRO_CONTENT_COLOR) {
ptc->target = surface;
surface = cairo_surface_create_similar (ptc->target,
CAIRO_CONTENT_COLOR,
ptc->width, ptc->height);
if (cairo_surface_status (surface))
goto CLEANUP_TARGET;
} else
ptc->target = NULL;
status = cairo_surface_set_user_data (surface, &svg_closure_key, ptc, NULL);
if (status == CAIRO_STATUS_SUCCESS)
return surface;
cairo_surface_destroy (surface);
surface = cairo_boilerplate_surface_create_in_error (status);
CLEANUP_TARGET:
cairo_surface_destroy (ptc->target);
CLEANUP_FILENAME:
free (ptc->filename);
free (ptc);
return surface;
}
static cairo_surface_t *
_cairo_boilerplate_svg11_create_surface (const char *name,
cairo_content_t content,
double width,
double height,
double max_width,
double max_height,
cairo_boilerplate_mode_t mode,
void **closure)
{
/* current default, but be explicit in case the default changes */
return _cairo_boilerplate_svg_create_surface (name, content,
CAIRO_SVG_VERSION_1_1,
width, height,
max_width, max_height,
mode,
closure);
}
static cairo_surface_t *
_cairo_boilerplate_svg12_create_surface (const char *name,
cairo_content_t content,
double width,
double height,
double max_width,
double max_height,
cairo_boilerplate_mode_t mode,
void **closure)
{
return _cairo_boilerplate_svg_create_surface (name, content,
CAIRO_SVG_VERSION_1_2,
width, height,
max_width, max_height,
mode,
closure);
}
static cairo_status_t
_cairo_boilerplate_svg_finish_surface (cairo_surface_t *surface)
{
svg_target_closure_t *ptc = cairo_surface_get_user_data (surface,
&svg_closure_key);
cairo_status_t status;
/* Both surface and ptc->target were originally created at the
* same dimensions. We want a 1:1 copy here, so we first clear any
* device offset on surface.
*
* In a more realistic use case of device offsets, the target of
* this copying would be of a different size than the source, and
* the offset would be desirable during the copy operation. */
cairo_surface_set_device_offset (surface, 0, 0);
if (ptc->target) {
cairo_t *cr;
cr = cairo_create (ptc->target);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
cairo_show_page (cr);
status = cairo_status (cr);
cairo_destroy (cr);
if (status)
return status;
cairo_surface_finish (surface);
status = cairo_surface_status (surface);
if (status)
return status;
surface = ptc->target;
}
cairo_surface_finish (surface);
status = cairo_surface_status (surface);
if (status)
return status;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_boilerplate_svg_surface_write_to_png (cairo_surface_t *surface,
const char *filename)
{
svg_target_closure_t *ptc = cairo_surface_get_user_data (surface,
&svg_closure_key);
char command[4096];
int exitstatus;
sprintf (command, "./svg2png %s %s",
ptc->filename, filename);
exitstatus = system (command);
#if _XOPEN_SOURCE && HAVE_SIGNAL_H
if (WIFSIGNALED (exitstatus))
raise (WTERMSIG (exitstatus));
#endif
if (exitstatus)
return CAIRO_STATUS_WRITE_ERROR;
return CAIRO_STATUS_SUCCESS;
}
static cairo_surface_t *
_cairo_boilerplate_svg_convert_to_image (cairo_surface_t *surface)
{
svg_target_closure_t *ptc = cairo_surface_get_user_data (surface,
&svg_closure_key);
return cairo_boilerplate_convert_to_image (ptc->filename, 0);
}
static cairo_surface_t *
_cairo_boilerplate_svg_get_image_surface (cairo_surface_t *surface,
int page,
int width,
int height)
{
cairo_surface_t *image;
if (page != 0)
return cairo_boilerplate_surface_create_in_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
image = _cairo_boilerplate_svg_convert_to_image (surface);
cairo_surface_set_device_offset (image,
cairo_image_surface_get_width (image) - width,
cairo_image_surface_get_height (image) - height);
surface = _cairo_boilerplate_get_image_surface (image, 0, width, height);
cairo_surface_destroy (image);
return surface;
}
static void
_cairo_boilerplate_svg_cleanup (void *closure)
{
svg_target_closure_t *ptc = closure;
if (ptc->target != NULL) {
cairo_surface_finish (ptc->target);
cairo_surface_destroy (ptc->target);
}
free (ptc->filename);
free (ptc);
}
static void
_cairo_boilerplate_svg_force_fallbacks (cairo_surface_t *abstract_surface,
double x_pixels_per_inch,
double y_pixels_per_inch)
{
svg_target_closure_t *ptc = cairo_surface_get_user_data (abstract_surface,
&svg_closure_key);
cairo_paginated_surface_t *paginated;
cairo_svg_surface_t *surface;
if (ptc->target)
abstract_surface = ptc->target;
paginated = (cairo_paginated_surface_t*) abstract_surface;
surface = (cairo_svg_surface_t*) paginated->target;
surface->force_fallbacks = TRUE;
cairo_surface_set_fallback_resolution (&paginated->base,
x_pixels_per_inch,
y_pixels_per_inch);
}
static const cairo_boilerplate_target_t targets[] = {
/* It seems we should be able to round-trip SVG content perfectly
* through librsvg and cairo, but for some mysterious reason, some
* systems get an error of 1 for some pixels on some of the text
* tests. XXX: I'd still like to chase these down at some point.
* For now just set the svg error tolerance to 1. */
{
"svg11", "svg", ".svg", NULL,
CAIRO_SURFACE_TYPE_SVG, CAIRO_CONTENT_COLOR_ALPHA, 1,
"cairo_svg_surface_create",
_cairo_boilerplate_svg11_create_surface,
cairo_surface_create_similar,
_cairo_boilerplate_svg_force_fallbacks,
_cairo_boilerplate_svg_finish_surface,
_cairo_boilerplate_svg_get_image_surface,
_cairo_boilerplate_svg_surface_write_to_png,
_cairo_boilerplate_svg_cleanup,
NULL, NULL, FALSE, TRUE, TRUE
},
{
"svg11", "svg", ".svg", NULL,
CAIRO_SURFACE_TYPE_RECORDING, CAIRO_CONTENT_COLOR, 1,
"cairo_svg_surface_create",
_cairo_boilerplate_svg11_create_surface,
cairo_surface_create_similar,
_cairo_boilerplate_svg_force_fallbacks,
_cairo_boilerplate_svg_finish_surface,
_cairo_boilerplate_svg_get_image_surface,
_cairo_boilerplate_svg_surface_write_to_png,
_cairo_boilerplate_svg_cleanup,
NULL, NULL, FALSE, TRUE, TRUE
},
{
"svg12", "svg", ".svg", NULL,
CAIRO_SURFACE_TYPE_SVG, CAIRO_CONTENT_COLOR_ALPHA, 1,
"cairo_svg_surface_create",
_cairo_boilerplate_svg12_create_surface,
cairo_surface_create_similar,
_cairo_boilerplate_svg_force_fallbacks,
_cairo_boilerplate_svg_finish_surface,
_cairo_boilerplate_svg_get_image_surface,
_cairo_boilerplate_svg_surface_write_to_png,
_cairo_boilerplate_svg_cleanup,
NULL, NULL, FALSE, TRUE, TRUE
},
{
"svg12", "svg", ".svg", NULL,
CAIRO_SURFACE_TYPE_RECORDING, CAIRO_CONTENT_COLOR, 1,
"cairo_svg_surface_create",
_cairo_boilerplate_svg12_create_surface,
cairo_surface_create_similar,
_cairo_boilerplate_svg_force_fallbacks,
_cairo_boilerplate_svg_finish_surface,
_cairo_boilerplate_svg_get_image_surface,
_cairo_boilerplate_svg_surface_write_to_png,
_cairo_boilerplate_svg_cleanup,
NULL, NULL, FALSE, TRUE, TRUE
},
};
CAIRO_BOILERPLATE (svg, targets)
#else
CAIRO_NO_BOILERPLATE (svg)
#endif