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/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2009 Chris Wilson
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is Chris Wilson.
*
* Contributor(s):
* Chris Wilson <chris@chris-wilson.co.uk>
*/
/* This surface is intended to produce a verbose, hierarchical, DAG XML file
* representing a single surface. It is intended to be used by debuggers,
* such as cairo-sphinx, or by application test-suites that want a log of
* operations.
*/
#include "cairoint.h"
#include "cairo-xml.h"
#include "cairo-clip-private.h"
#include "cairo-device-private.h"
#include "cairo-default-context-private.h"
#include "cairo-image-surface-private.h"
#include "cairo-error-private.h"
#include "cairo-output-stream-private.h"
#include "cairo-recording-surface-inline.h"
#define static cairo_warn static
typedef struct _cairo_xml_surface cairo_xml_surface_t;
typedef struct _cairo_xml {
cairo_device_t base;
cairo_output_stream_t *stream;
int indent;
} cairo_xml_t;
struct _cairo_xml_surface {
cairo_surface_t base;
double width, height;
};
slim_hidden_proto (cairo_xml_for_recording_surface);
static const cairo_surface_backend_t _cairo_xml_surface_backend;
static const char *
_operator_to_string (cairo_operator_t op)
{
static const char *names[] = {
"CLEAR", /* CAIRO_OPERATOR_CLEAR */
"SOURCE", /* CAIRO_OPERATOR_SOURCE */
"OVER", /* CAIRO_OPERATOR_OVER */
"IN", /* CAIRO_OPERATOR_IN */
"OUT", /* CAIRO_OPERATOR_OUT */
"ATOP", /* CAIRO_OPERATOR_ATOP */
"DEST", /* CAIRO_OPERATOR_DEST */
"DEST_OVER", /* CAIRO_OPERATOR_DEST_OVER */
"DEST_IN", /* CAIRO_OPERATOR_DEST_IN */
"DEST_OUT", /* CAIRO_OPERATOR_DEST_OUT */
"DEST_ATOP", /* CAIRO_OPERATOR_DEST_ATOP */
"XOR", /* CAIRO_OPERATOR_XOR */
"ADD", /* CAIRO_OPERATOR_ADD */
"SATURATE", /* CAIRO_OPERATOR_SATURATE */
"MULTIPLY", /* CAIRO_OPERATOR_MULTIPLY */
"SCREEN", /* CAIRO_OPERATOR_SCREEN */
"OVERLAY", /* CAIRO_OPERATOR_OVERLAY */
"DARKEN", /* CAIRO_OPERATOR_DARKEN */
"LIGHTEN", /* CAIRO_OPERATOR_LIGHTEN */
"DODGE", /* CAIRO_OPERATOR_COLOR_DODGE */
"BURN", /* CAIRO_OPERATOR_COLOR_BURN */
"HARD_LIGHT", /* CAIRO_OPERATOR_HARD_LIGHT */
"SOFT_LIGHT", /* CAIRO_OPERATOR_SOFT_LIGHT */
"DIFFERENCE", /* CAIRO_OPERATOR_DIFFERENCE */
"EXCLUSION", /* CAIRO_OPERATOR_EXCLUSION */
"HSL_HUE", /* CAIRO_OPERATOR_HSL_HUE */
"HSL_SATURATION", /* CAIRO_OPERATOR_HSL_SATURATION */
"HSL_COLOR", /* CAIRO_OPERATOR_HSL_COLOR */
"HSL_LUMINOSITY" /* CAIRO_OPERATOR_HSL_LUMINOSITY */
};
assert (op < ARRAY_LENGTH (names));
return names[op];
}
static const char *
_extend_to_string (cairo_extend_t extend)
{
static const char *names[] = {
"EXTEND_NONE", /* CAIRO_EXTEND_NONE */
"EXTEND_REPEAT", /* CAIRO_EXTEND_REPEAT */
"EXTEND_REFLECT", /* CAIRO_EXTEND_REFLECT */
"EXTEND_PAD" /* CAIRO_EXTEND_PAD */
};
assert (extend < ARRAY_LENGTH (names));
return names[extend];
}
static const char *
_filter_to_string (cairo_filter_t filter)
{
static const char *names[] = {
"FILTER_FAST", /* CAIRO_FILTER_FAST */
"FILTER_GOOD", /* CAIRO_FILTER_GOOD */
"FILTER_BEST", /* CAIRO_FILTER_BEST */
"FILTER_NEAREST", /* CAIRO_FILTER_NEAREST */
"FILTER_BILINEAR", /* CAIRO_FILTER_BILINEAR */
"FILTER_GAUSSIAN", /* CAIRO_FILTER_GAUSSIAN */
};
assert (filter < ARRAY_LENGTH (names));
return names[filter];
}
static const char *
_fill_rule_to_string (cairo_fill_rule_t rule)
{
static const char *names[] = {
"WINDING", /* CAIRO_FILL_RULE_WINDING */
"EVEN_ODD" /* CAIRO_FILL_RILE_EVEN_ODD */
};
assert (rule < ARRAY_LENGTH (names));
return names[rule];
}
static const char *
_antialias_to_string (cairo_antialias_t antialias)
{
static const char *names[] = {
"DEFAULT", /* CAIRO_ANTIALIAS_DEFAULT */
"NONE", /* CAIRO_ANTIALIAS_NONE */
"GRAY", /* CAIRO_ANTIALIAS_GRAY */
"SUBPIXEL", /* CAIRO_ANTIALIAS_SUBPIXEL */
"FAST", /* CAIRO_ANTIALIAS_FAST */
"GOOD", /* CAIRO_ANTIALIAS_GOOD */
"BEST", /* CAIRO_ANTIALIAS_BEST */
};
assert (antialias < ARRAY_LENGTH (names));
return names[antialias];
}
static const char *
_line_cap_to_string (cairo_line_cap_t line_cap)
{
static const char *names[] = {
"LINE_CAP_BUTT", /* CAIRO_LINE_CAP_BUTT */
"LINE_CAP_ROUND", /* CAIRO_LINE_CAP_ROUND */
"LINE_CAP_SQUARE" /* CAIRO_LINE_CAP_SQUARE */
};
assert (line_cap < ARRAY_LENGTH (names));
return names[line_cap];
}
static const char *
_line_join_to_string (cairo_line_join_t line_join)
{
static const char *names[] = {
"LINE_JOIN_MITER", /* CAIRO_LINE_JOIN_MITER */
"LINE_JOIN_ROUND", /* CAIRO_LINE_JOIN_ROUND */
"LINE_JOIN_BEVEL", /* CAIRO_LINE_JOIN_BEVEL */
};
assert (line_join < ARRAY_LENGTH (names));
return names[line_join];
}
static const char *
_content_to_string (cairo_content_t content)
{
switch (content) {
case CAIRO_CONTENT_ALPHA: return "ALPHA";
case CAIRO_CONTENT_COLOR: return "COLOR";
default:
case CAIRO_CONTENT_COLOR_ALPHA: return "COLOR_ALPHA";
}
}
static const char *
_format_to_string (cairo_format_t format)
{
switch (format) {
case CAIRO_FORMAT_ARGB32: return "ARGB32";
case CAIRO_FORMAT_RGB30: return "RGB30";
case CAIRO_FORMAT_RGB24: return "RGB24";
case CAIRO_FORMAT_RGB16_565: return "RGB16_565";
case CAIRO_FORMAT_A8: return "A8";
case CAIRO_FORMAT_A1: return "A1";
case CAIRO_FORMAT_INVALID: return "INVALID";
}
ASSERT_NOT_REACHED;
return "INVALID";
}
static cairo_status_t
_device_flush (void *abstract_device)
{
cairo_xml_t *xml = abstract_device;
cairo_status_t status;
status = _cairo_output_stream_flush (xml->stream);
return status;
}
static void
_device_destroy (void *abstract_device)
{
cairo_xml_t *xml = abstract_device;
cairo_status_t status;
status = _cairo_output_stream_destroy (xml->stream);
free (xml);
}
static const cairo_device_backend_t _cairo_xml_device_backend = {
CAIRO_DEVICE_TYPE_XML,
NULL, NULL, /* lock, unlock */
_device_flush,
NULL, /* finish */
_device_destroy
};
static cairo_device_t *
_cairo_xml_create_internal (cairo_output_stream_t *stream)
{
cairo_xml_t *xml;
xml = _cairo_malloc (sizeof (cairo_xml_t));
if (unlikely (xml == NULL))
return _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
memset (xml, 0, sizeof (cairo_xml_t));
_cairo_device_init (&xml->base, &_cairo_xml_device_backend);
xml->indent = 0;
xml->stream = stream;
return &xml->base;
}
static void
_cairo_xml_indent (cairo_xml_t *xml, int indent)
{
xml->indent += indent;
assert (xml->indent >= 0);
}
static void CAIRO_PRINTF_FORMAT (2, 3)
_cairo_xml_printf (cairo_xml_t *xml, const char *fmt, ...)
{
va_list ap;
char indent[80];
int len;
len = MIN (xml->indent, ARRAY_LENGTH (indent));
memset (indent, ' ', len);
_cairo_output_stream_write (xml->stream, indent, len);
va_start (ap, fmt);
_cairo_output_stream_vprintf (xml->stream, fmt, ap);
va_end (ap);
_cairo_output_stream_write (xml->stream, "\n", 1);
}
static void CAIRO_PRINTF_FORMAT (2, 3)
_cairo_xml_printf_start (cairo_xml_t *xml, const char *fmt, ...)
{
char indent[80];
int len;
len = MIN (xml->indent, ARRAY_LENGTH (indent));
memset (indent, ' ', len);
_cairo_output_stream_write (xml->stream, indent, len);
if (fmt != NULL) {
va_list ap;
va_start (ap, fmt);
_cairo_output_stream_vprintf (xml->stream, fmt, ap);
va_end (ap);
}
}
static void CAIRO_PRINTF_FORMAT (2, 3)
_cairo_xml_printf_continue (cairo_xml_t *xml, const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
_cairo_output_stream_vprintf (xml->stream, fmt, ap);
va_end (ap);
}
static void CAIRO_PRINTF_FORMAT (2, 3)
_cairo_xml_printf_end (cairo_xml_t *xml, const char *fmt, ...)
{
if (fmt != NULL) {
va_list ap;
va_start (ap, fmt);
_cairo_output_stream_vprintf (xml->stream, fmt, ap);
va_end (ap);
}
_cairo_output_stream_write (xml->stream, "\n", 1);
}
static cairo_surface_t *
_cairo_xml_surface_create_similar (void *abstract_surface,
cairo_content_t content,
int width,
int height)
{
cairo_rectangle_t extents;
extents.x = extents.y = 0;
extents.width = width;
extents.height = height;
return cairo_recording_surface_create (content, &extents);
}
static cairo_bool_t
_cairo_xml_surface_get_extents (void *abstract_surface,
cairo_rectangle_int_t *rectangle)
{
cairo_xml_surface_t *surface = abstract_surface;
if (surface->width < 0 || surface->height < 0)
return FALSE;
rectangle->x = 0;
rectangle->y = 0;
rectangle->width = surface->width;
rectangle->height = surface->height;
return TRUE;
}
static cairo_status_t
_cairo_xml_move_to (void *closure,
const cairo_point_t *p1)
{
_cairo_xml_printf_continue (closure, " %f %f m",
_cairo_fixed_to_double (p1->x),
_cairo_fixed_to_double (p1->y));
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_line_to (void *closure,
const cairo_point_t *p1)
{
_cairo_xml_printf_continue (closure, " %f %f l",
_cairo_fixed_to_double (p1->x),
_cairo_fixed_to_double (p1->y));
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_curve_to (void *closure,
const cairo_point_t *p1,
const cairo_point_t *p2,
const cairo_point_t *p3)
{
_cairo_xml_printf_continue (closure, " %f %f %f %f %f %f c",
_cairo_fixed_to_double (p1->x),
_cairo_fixed_to_double (p1->y),
_cairo_fixed_to_double (p2->x),
_cairo_fixed_to_double (p2->y),
_cairo_fixed_to_double (p3->x),
_cairo_fixed_to_double (p3->y));
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_close_path (void *closure)
{
_cairo_xml_printf_continue (closure, " h");
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_xml_emit_path (cairo_xml_t *xml,
const cairo_path_fixed_t *path)
{
cairo_status_t status;
_cairo_xml_printf_start (xml, "<path>");
status = _cairo_path_fixed_interpret (path,
_cairo_xml_move_to,
_cairo_xml_line_to,
_cairo_xml_curve_to,
_cairo_xml_close_path,
xml);
assert (status == CAIRO_STATUS_SUCCESS);
_cairo_xml_printf_end (xml, "</path>");
}
static void
_cairo_xml_emit_string (cairo_xml_t *xml,
const char *node,
const char *data)
{
_cairo_xml_printf (xml, "<%s>%s</%s>", node, data, node);
}
static void
_cairo_xml_emit_double (cairo_xml_t *xml,
const char *node,
double data)
{
_cairo_xml_printf (xml, "<%s>%f</%s>", node, data, node);
}
static cairo_xml_t *
to_xml (cairo_xml_surface_t *surface)
{
return (cairo_xml_t *) surface->base.device;
}
static cairo_status_t
_cairo_xml_surface_emit_clip_boxes (cairo_xml_surface_t *surface,
const cairo_clip_t *clip)
{
cairo_box_t *box;
cairo_xml_t *xml;
int n;
if (clip->num_boxes == 0)
return CAIRO_STATUS_SUCCESS;
/* skip the trivial clip covering the surface extents */
if (surface->width >= 0 && surface->height >= 0 && clip->num_boxes == 1) {
box = &clip->boxes[0];
if (box->p1.x <= 0 && box->p1.y <= 0 &&
box->p2.x - box->p1.x >= _cairo_fixed_from_double (surface->width) &&
box->p2.y - box->p1.y >= _cairo_fixed_from_double (surface->height))
{
return CAIRO_STATUS_SUCCESS;
}
}
xml = to_xml (surface);
_cairo_xml_printf (xml, "<clip>");
_cairo_xml_indent (xml, 2);
_cairo_xml_printf (xml, "<path>");
_cairo_xml_indent (xml, 2);
for (n = 0; n < clip->num_boxes; n++) {
box = &clip->boxes[n];
_cairo_xml_printf_start (xml, "%f %f m",
_cairo_fixed_to_double (box->p1.x),
_cairo_fixed_to_double (box->p1.y));
_cairo_xml_printf_continue (xml, " %f %f l",
_cairo_fixed_to_double (box->p2.x),
_cairo_fixed_to_double (box->p1.y));
_cairo_xml_printf_continue (xml, " %f %f l",
_cairo_fixed_to_double (box->p2.x),
_cairo_fixed_to_double (box->p2.y));
_cairo_xml_printf_continue (xml, " %f %f l",
_cairo_fixed_to_double (box->p1.x),
_cairo_fixed_to_double (box->p2.y));
_cairo_xml_printf_end (xml, " h");
}
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</path>");
_cairo_xml_emit_double (xml, "tolerance", 1.0);
_cairo_xml_emit_string (xml, "antialias",
_antialias_to_string (CAIRO_ANTIALIAS_NONE));
_cairo_xml_emit_string (xml, "fill-rule",
_fill_rule_to_string (CAIRO_FILL_RULE_WINDING));
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</clip>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_surface_emit_clip_path (cairo_xml_surface_t *surface,
const cairo_clip_path_t *clip_path)
{
cairo_box_t box;
cairo_status_t status;
cairo_xml_t *xml;
if (clip_path == NULL)
return CAIRO_STATUS_SUCCESS;
status = _cairo_xml_surface_emit_clip_path (surface, clip_path->prev);
if (unlikely (status))
return status;
/* skip the trivial clip covering the surface extents */
if (surface->width >= 0 && surface->height >= 0 &&
_cairo_path_fixed_is_box (&clip_path->path, &box))
{
if (box.p1.x <= 0 && box.p1.y <= 0 &&
box.p2.x - box.p1.x >= _cairo_fixed_from_double (surface->width) &&
box.p2.y - box.p1.y >= _cairo_fixed_from_double (surface->height))
{
return CAIRO_STATUS_SUCCESS;
}
}
xml = to_xml (surface);
_cairo_xml_printf_start (xml, "<clip>");
_cairo_xml_indent (xml, 2);
_cairo_xml_emit_path (xml, &clip_path->path);
_cairo_xml_emit_double (xml, "tolerance", clip_path->tolerance);
_cairo_xml_emit_string (xml, "antialias",
_antialias_to_string (clip_path->antialias));
_cairo_xml_emit_string (xml, "fill-rule",
_fill_rule_to_string (clip_path->fill_rule));
_cairo_xml_indent (xml, -2);
_cairo_xml_printf_end (xml, "</clip>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_surface_emit_clip (cairo_xml_surface_t *surface,
const cairo_clip_t *clip)
{
cairo_status_t status;
if (clip == NULL)
return CAIRO_STATUS_SUCCESS;
status = _cairo_xml_surface_emit_clip_boxes (surface, clip);
if (unlikely (status))
return status;
return _cairo_xml_surface_emit_clip_path (surface, clip->path);
}
static cairo_status_t
_cairo_xml_emit_solid (cairo_xml_t *xml,
const cairo_solid_pattern_t *solid)
{
_cairo_xml_printf (xml, "<solid>%f %f %f %f</solid>",
solid->color.red,
solid->color.green,
solid->color.blue,
solid->color.alpha);
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_xml_emit_matrix (cairo_xml_t *xml,
const cairo_matrix_t *matrix)
{
if (! _cairo_matrix_is_identity (matrix)) {
_cairo_xml_printf (xml, "<matrix>%f %f %f %f %f %f</matrix>",
matrix->xx, matrix->yx,
matrix->xy, matrix->yy,
matrix->x0, matrix->y0);
}
}
static void
_cairo_xml_emit_gradient (cairo_xml_t *xml,
const cairo_gradient_pattern_t *gradient)
{
unsigned int i;
for (i = 0; i < gradient->n_stops; i++) {
_cairo_xml_printf (xml,
"<color-stop>%f %f %f %f %f</color-stop>",
gradient->stops[i].offset,
gradient->stops[i].color.red,
gradient->stops[i].color.green,
gradient->stops[i].color.blue,
gradient->stops[i].color.alpha);
}
}
static cairo_status_t
_cairo_xml_emit_linear (cairo_xml_t *xml,
const cairo_linear_pattern_t *linear)
{
_cairo_xml_printf (xml,
"<linear x1='%f' y1='%f' x2='%f' y2='%f'>",
linear->pd1.x, linear->pd1.y,
linear->pd2.x, linear->pd2.y);
_cairo_xml_indent (xml, 2);
_cairo_xml_emit_gradient (xml, &linear->base);
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</linear>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_emit_radial (cairo_xml_t *xml,
const cairo_radial_pattern_t *radial)
{
_cairo_xml_printf (xml,
"<radial x1='%f' y1='%f' r1='%f' x2='%f' y2='%f' r2='%f'>",
radial->cd1.center.x, radial->cd1.center.y, radial->cd1.radius,
radial->cd2.center.x, radial->cd2.center.y, radial->cd2.radius);
_cairo_xml_indent (xml, 2);
_cairo_xml_emit_gradient (xml, &radial->base);
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</radial>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_write_func (void *closure, const unsigned char *data, unsigned len)
{
_cairo_output_stream_write (closure, data, len);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_emit_image (cairo_xml_t *xml,
cairo_image_surface_t *image)
{
cairo_output_stream_t *stream;
cairo_status_t status;
_cairo_xml_printf_start (xml,
"<image width='%d' height='%d' format='%s'>",
image->width, image->height,
_format_to_string (image->format));
stream = _cairo_base64_stream_create (xml->stream);
status = cairo_surface_write_to_png_stream (&image->base,
_write_func, stream);
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_output_stream_destroy (stream);
if (unlikely (status))
return status;
_cairo_xml_printf_end (xml, "</image>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_emit_surface (cairo_xml_t *xml,
const cairo_surface_pattern_t *pattern)
{
cairo_surface_t *source = pattern->surface;
cairo_status_t status;
if (_cairo_surface_is_recording (source)) {
status = cairo_xml_for_recording_surface (&xml->base, source);
} else {
cairo_image_surface_t *image;
void *image_extra;
status = _cairo_surface_acquire_source_image (source,
&image, &image_extra);
if (unlikely (status))
return status;
status = _cairo_xml_emit_image (xml, image);
_cairo_surface_release_source_image (source, image, image_extra);
}
return status;
}
static cairo_status_t
_cairo_xml_emit_pattern (cairo_xml_t *xml,
const char *source_or_mask,
const cairo_pattern_t *pattern)
{
cairo_status_t status;
_cairo_xml_printf (xml, "<%s-pattern>", source_or_mask);
_cairo_xml_indent (xml, 2);
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SOLID:
status = _cairo_xml_emit_solid (xml, (cairo_solid_pattern_t *) pattern);
break;
case CAIRO_PATTERN_TYPE_LINEAR:
status = _cairo_xml_emit_linear (xml, (cairo_linear_pattern_t *) pattern);
break;
case CAIRO_PATTERN_TYPE_RADIAL:
status = _cairo_xml_emit_radial (xml, (cairo_radial_pattern_t *) pattern);
break;
case CAIRO_PATTERN_TYPE_SURFACE:
status = _cairo_xml_emit_surface (xml, (cairo_surface_pattern_t *) pattern);
break;
default:
ASSERT_NOT_REACHED;
status = CAIRO_INT_STATUS_UNSUPPORTED;
break;
}
if (pattern->type != CAIRO_PATTERN_TYPE_SOLID) {
_cairo_xml_emit_matrix (xml, &pattern->matrix);
_cairo_xml_printf (xml,
"<extend>%s</extend>",
_extend_to_string (pattern->extend));
_cairo_xml_printf (xml,
"<filter>%s</filter>",
_filter_to_string (pattern->filter));
}
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</%s-pattern>", source_or_mask);
return status;
}
static cairo_int_status_t
_cairo_xml_surface_paint (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_clip_t *clip)
{
cairo_xml_surface_t *surface = abstract_surface;
cairo_xml_t *xml = to_xml (surface);
cairo_status_t status;
_cairo_xml_printf (xml, "<paint>");
_cairo_xml_indent (xml, 2);
_cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
status = _cairo_xml_surface_emit_clip (surface, clip);
if (unlikely (status))
return status;
status = _cairo_xml_emit_pattern (xml, "source", source);
if (unlikely (status))
return status;
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</paint>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_xml_surface_mask (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_pattern_t *mask,
const cairo_clip_t *clip)
{
cairo_xml_surface_t *surface = abstract_surface;
cairo_xml_t *xml = to_xml (surface);
cairo_status_t status;
_cairo_xml_printf (xml, "<mask>");
_cairo_xml_indent (xml, 2);
_cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
status = _cairo_xml_surface_emit_clip (surface, clip);
if (unlikely (status))
return status;
status = _cairo_xml_emit_pattern (xml, "source", source);
if (unlikely (status))
return status;
status = _cairo_xml_emit_pattern (xml, "mask", mask);
if (unlikely (status))
return status;
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</mask>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_xml_surface_stroke (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_path_fixed_t *path,
const cairo_stroke_style_t *style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip)
{
cairo_xml_surface_t *surface = abstract_surface;
cairo_xml_t *xml = to_xml (surface);
cairo_status_t status;
_cairo_xml_printf (xml, "<stroke>");
_cairo_xml_indent (xml, 2);
_cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
_cairo_xml_emit_double (xml, "line-width", style->line_width);
_cairo_xml_emit_double (xml, "miter-limit", style->miter_limit);
_cairo_xml_emit_string (xml, "line-cap", _line_cap_to_string (style->line_cap));
_cairo_xml_emit_string (xml, "line-join", _line_join_to_string (style->line_join));
status = _cairo_xml_surface_emit_clip (surface, clip);
if (unlikely (status))
return status;
status = _cairo_xml_emit_pattern (xml, "source", source);
if (unlikely (status))
return status;
if (style->num_dashes) {
unsigned int i;
_cairo_xml_printf_start (xml, "<dash offset='%f'>",
style->dash_offset);
for (i = 0; i < style->num_dashes; i++)
_cairo_xml_printf_continue (xml, "%f ", style->dash[i]);
_cairo_xml_printf_end (xml, "</dash>");
}
_cairo_xml_emit_path (xml, path);
_cairo_xml_emit_double (xml, "tolerance", tolerance);
_cairo_xml_emit_string (xml, "antialias", _antialias_to_string (antialias));
_cairo_xml_emit_matrix (xml, ctm);
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</stroke>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_xml_surface_fill (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_path_fixed_t*path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip)
{
cairo_xml_surface_t *surface = abstract_surface;
cairo_xml_t *xml = to_xml (surface);
cairo_status_t status;
_cairo_xml_printf (xml, "<fill>");
_cairo_xml_indent (xml, 2);
_cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
status = _cairo_xml_surface_emit_clip (surface, clip);
if (unlikely (status))
return status;
status = _cairo_xml_emit_pattern (xml, "source", source);
if (unlikely (status))
return status;
_cairo_xml_emit_path (xml, path);
_cairo_xml_emit_double (xml, "tolerance", tolerance);
_cairo_xml_emit_string (xml, "antialias", _antialias_to_string (antialias));
_cairo_xml_emit_string (xml, "fill-rule", _fill_rule_to_string (fill_rule));
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</fill>");
return CAIRO_STATUS_SUCCESS;
}
#if CAIRO_HAS_FT_FONT
#include "cairo-ft-private.h"
static cairo_status_t
_cairo_xml_emit_type42_font (cairo_xml_t *xml,
cairo_scaled_font_t *scaled_font)
{
const cairo_scaled_font_backend_t *backend;
cairo_output_stream_t *base64_stream;
cairo_output_stream_t *zlib_stream;
cairo_status_t status, status2;
unsigned long size;
uint32_t len;
uint8_t *buf;
backend = scaled_font->backend;
if (backend->load_truetype_table == NULL)
return CAIRO_INT_STATUS_UNSUPPORTED;
size = 0;
status = backend->load_truetype_table (scaled_font, 0, 0, NULL, &size);
if (unlikely (status))
return status;
buf = _cairo_malloc (size);
if (unlikely (buf == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = backend->load_truetype_table (scaled_font, 0, 0, buf, &size);
if (unlikely (status)) {
free (buf);
return status;
}
_cairo_xml_printf_start (xml, "<font type='42' flags='%d' index='0'>",
_cairo_ft_scaled_font_get_load_flags (scaled_font));
base64_stream = _cairo_base64_stream_create (xml->stream);
len = size;
_cairo_output_stream_write (base64_stream, &len, sizeof (len));
zlib_stream = _cairo_deflate_stream_create (base64_stream);
_cairo_output_stream_write (zlib_stream, buf, size);
free (buf);
status2 = _cairo_output_stream_destroy (zlib_stream);
if (status == CAIRO_STATUS_SUCCESS)
status = status2;
status2 = _cairo_output_stream_destroy (base64_stream);
if (status == CAIRO_STATUS_SUCCESS)
status = status2;
_cairo_xml_printf_end (xml, "</font>");
return status;
}
#else
static cairo_status_t
_cairo_xml_emit_type42_font (cairo_xml_t *xml,
cairo_scaled_font_t *scaled_font)
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
#endif
static cairo_status_t
_cairo_xml_emit_type3_font (cairo_xml_t *xml,
cairo_scaled_font_t *scaled_font,
cairo_glyph_t *glyphs,
int num_glyphs)
{
_cairo_xml_printf_start (xml, "<font type='3'>");
_cairo_xml_printf_end (xml, "</font>");
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xml_emit_scaled_font (cairo_xml_t *xml,
cairo_scaled_font_t *scaled_font,
cairo_glyph_t *glyphs,
int num_glyphs)
{
cairo_int_status_t status;
_cairo_xml_printf (xml, "<scaled-font>");
_cairo_xml_indent (xml, 2);
status = _cairo_xml_emit_type42_font (xml, scaled_font);
if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
status = _cairo_xml_emit_type3_font (xml, scaled_font,
glyphs, num_glyphs);
}
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</scaled-font>");
return status;
}
static cairo_int_status_t
_cairo_xml_surface_glyphs (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_scaled_font_t *scaled_font,
const cairo_clip_t *clip)
{
cairo_xml_surface_t *surface = abstract_surface;
cairo_xml_t *xml = to_xml (surface);
cairo_status_t status;
int i;
_cairo_xml_printf (xml, "<glyphs>");
_cairo_xml_indent (xml, 2);
_cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
status = _cairo_xml_surface_emit_clip (surface, clip);
if (unlikely (status))
return status;
status = _cairo_xml_emit_pattern (xml, "source", source);
if (unlikely (status))
return status;
status = _cairo_xml_emit_scaled_font (xml, scaled_font, glyphs, num_glyphs);
if (unlikely (status))
return status;
for (i = 0; i < num_glyphs; i++) {
_cairo_xml_printf (xml, "<glyph index='%lu'>%f %f</glyph>",
glyphs[i].index,
glyphs[i].x,
glyphs[i].y);
}
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</glyphs>");
return CAIRO_STATUS_SUCCESS;
}
static const cairo_surface_backend_t
_cairo_xml_surface_backend = {
CAIRO_SURFACE_TYPE_XML,
NULL,
_cairo_default_context_create,
_cairo_xml_surface_create_similar,
NULL, /* create_similar_image */
NULL, /* map_to_image */
NULL, /* unmap_image */
_cairo_surface_default_source,
NULL, /* acquire source image */
NULL, /* release source image */
NULL, /* snapshot */
NULL, /* copy page */
NULL, /* show page */
_cairo_xml_surface_get_extents,
NULL, /* get_font_options */
NULL, /* flush */
NULL, /* mark_dirty_rectangle */
_cairo_xml_surface_paint,
_cairo_xml_surface_mask,
_cairo_xml_surface_stroke,
_cairo_xml_surface_fill,
NULL, /* fill_stroke */
_cairo_xml_surface_glyphs,
};
static cairo_surface_t *
_cairo_xml_surface_create_internal (cairo_device_t *device,
cairo_content_t content,
double width,
double height)
{
cairo_xml_surface_t *surface;
surface = _cairo_malloc (sizeof (cairo_xml_surface_t));
if (unlikely (surface == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_surface_init (&surface->base,
&_cairo_xml_surface_backend,
device,
content,
TRUE); /* is_vector */
surface->width = width;
surface->height = height;
return &surface->base;
}
cairo_device_t *
cairo_xml_create (const char *filename)
{
cairo_output_stream_t *stream;
cairo_status_t status;
stream = _cairo_output_stream_create_for_filename (filename);
if ((status = _cairo_output_stream_get_status (stream)))
return _cairo_device_create_in_error (status);
return _cairo_xml_create_internal (stream);
}
cairo_device_t *
cairo_xml_create_for_stream (cairo_write_func_t write_func,
void *closure)
{
cairo_output_stream_t *stream;
cairo_status_t status;
stream = _cairo_output_stream_create (write_func, NULL, closure);
if ((status = _cairo_output_stream_get_status (stream)))
return _cairo_device_create_in_error (status);
return _cairo_xml_create_internal (stream);
}
cairo_surface_t *
cairo_xml_surface_create (cairo_device_t *device,
cairo_content_t content,
double width, double height)
{
if (unlikely (device->backend->type != CAIRO_DEVICE_TYPE_XML))
return _cairo_surface_create_in_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
if (unlikely (device->status))
return _cairo_surface_create_in_error (device->status);
return _cairo_xml_surface_create_internal (device, content, width, height);
}
cairo_status_t
cairo_xml_for_recording_surface (cairo_device_t *device,
cairo_surface_t *recording_surface)
{
cairo_box_t bbox;
cairo_rectangle_int_t extents;
cairo_surface_t *surface;
cairo_xml_t *xml;
cairo_status_t status;
if (unlikely (device->status))
return device->status;
if (unlikely (recording_surface->status))
return recording_surface->status;
if (unlikely (device->backend->type != CAIRO_DEVICE_TYPE_XML))
return _cairo_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
if (unlikely (! _cairo_surface_is_recording (recording_surface)))
return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
status = _cairo_recording_surface_get_bbox ((cairo_recording_surface_t *) recording_surface,
&bbox, NULL);
if (unlikely (status))
return status;
_cairo_box_round_to_rectangle (&bbox, &extents);
surface = _cairo_xml_surface_create_internal (device,
recording_surface->content,
extents.width,
extents.height);
if (unlikely (surface->status))
return surface->status;
xml = (cairo_xml_t *) device;
_cairo_xml_printf (xml,
"<surface content='%s' width='%d' height='%d'>",
_content_to_string (recording_surface->content),
extents.width, extents.height);
_cairo_xml_indent (xml, 2);
cairo_surface_set_device_offset (surface, -extents.x, -extents.y);
status = _cairo_recording_surface_replay (recording_surface, surface);
cairo_surface_destroy (surface);
_cairo_xml_indent (xml, -2);
_cairo_xml_printf (xml, "</surface>");
return status;
}
slim_hidden_def (cairo_xml_for_recording_surface);