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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright � 2008 Mozilla Corporation
*
* 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
* http://www.mozilla.org/MPL/
*
* 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 Mozilla Foundation.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@mozilla.com>
*/
#include "cairoint.h"
#include "cairo-image-surface-inline.h"
#include "cairo-quartz-image.h"
#include "cairo-quartz-private.h"
#include "cairo-surface-backend-private.h"
#include "cairo-error-private.h"
#include "cairo-default-context-private.h"
#define SURFACE_ERROR_NO_MEMORY (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_NO_MEMORY)))
#define SURFACE_ERROR_TYPE_MISMATCH (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_SURFACE_TYPE_MISMATCH)))
#define SURFACE_ERROR_INVALID_SIZE (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_INVALID_SIZE)))
#define SURFACE_ERROR_INVALID_FORMAT (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_INVALID_FORMAT)))
static void
DataProviderReleaseCallback (void *info, const void *data, size_t size)
{
cairo_surface_t *surface = (cairo_surface_t *) info;
cairo_surface_destroy (surface);
}
static cairo_surface_t *
_cairo_quartz_image_surface_create_similar (void *asurface,
cairo_content_t content,
int width,
int height)
{
cairo_surface_t *isurf =
_cairo_image_surface_create_with_content (content, width, height);
cairo_surface_t *result = cairo_quartz_image_surface_create (isurf);
cairo_surface_destroy (isurf);
return result;
}
static cairo_surface_t *
_cairo_quartz_image_surface_create_similar_image (void *asurface,
cairo_format_t format,
int width,
int height)
{
cairo_surface_t *isurf = cairo_image_surface_create (format, width, height);
cairo_surface_t *result = cairo_quartz_image_surface_create (isurf);
cairo_surface_destroy (isurf);
return result;
}
static cairo_status_t
_cairo_quartz_image_surface_finish (void *asurface)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
/* the imageSurface will be destroyed by the data provider's release callback */
CGImageRelease (surface->image);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_quartz_image_surface_acquire_source_image (void *asurface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
*image_out = surface->imageSurface;
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
static cairo_image_surface_t *
_cairo_quartz_image_surface_map_to_image (void *asurface,
const cairo_rectangle_int_t *extents)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
return _cairo_surface_map_to_image (&surface->imageSurface->base, extents);
}
static cairo_int_status_t
_cairo_quartz_image_surface_unmap_image (void *asurface,
cairo_image_surface_t *image)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
return _cairo_surface_unmap_image (&surface->imageSurface->base, image);
}
static cairo_bool_t
_cairo_quartz_image_surface_get_extents (void *asurface,
cairo_rectangle_int_t *extents)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
extents->x = 0;
extents->y = 0;
extents->width = surface->width;
extents->height = surface->height;
return TRUE;
}
/* we assume some drawing happened to the image buffer; make sure it's
* represented in the CGImage on flush()
*/
static cairo_status_t
_cairo_quartz_image_surface_flush (void *asurface,
unsigned flags)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
CGImageRef oldImage = surface->image;
CGImageRef newImage = NULL;
if (flags)
return CAIRO_STATUS_SUCCESS;
/* XXX only flush if the image has been modified. */
/* To be released by the ReleaseCallback */
cairo_surface_reference ((cairo_surface_t*) surface->imageSurface);
newImage = CairoQuartzCreateCGImage (surface->imageSurface->format,
surface->imageSurface->width,
surface->imageSurface->height,
surface->imageSurface->stride,
surface->imageSurface->data,
TRUE,
NULL,
DataProviderReleaseCallback,
surface->imageSurface);
surface->image = newImage;
CGImageRelease (oldImage);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_quartz_image_surface_paint (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_clip_t *clip)
{
cairo_quartz_image_surface_t *surface = abstract_surface;
return _cairo_surface_paint (&surface->imageSurface->base,
op, source, clip);
}
static cairo_int_status_t
_cairo_quartz_image_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_quartz_image_surface_t *surface = abstract_surface;
return _cairo_surface_mask (&surface->imageSurface->base,
op, source, mask, clip);
}
static cairo_int_status_t
_cairo_quartz_image_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_quartz_image_surface_t *surface = abstract_surface;
return _cairo_surface_stroke (&surface->imageSurface->base,
op, source, path,
style, ctm, ctm_inverse,
tolerance, antialias, clip);
}
static cairo_int_status_t
_cairo_quartz_image_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_quartz_image_surface_t *surface = abstract_surface;
return _cairo_surface_fill (&surface->imageSurface->base,
op, source, path,
fill_rule, tolerance, antialias,
clip);
}
static cairo_int_status_t
_cairo_quartz_image_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_quartz_image_surface_t *surface = abstract_surface;
return _cairo_surface_show_text_glyphs (&surface->imageSurface->base,
op, source,
NULL, 0,
glyphs, num_glyphs,
NULL, 0, 0,
scaled_font, clip);
}
static const cairo_surface_backend_t cairo_quartz_image_surface_backend = {
CAIRO_SURFACE_TYPE_QUARTZ_IMAGE,
_cairo_quartz_image_surface_finish,
_cairo_default_context_create,
_cairo_quartz_image_surface_create_similar,
_cairo_quartz_image_surface_create_similar_image,
_cairo_quartz_image_surface_map_to_image,
_cairo_quartz_image_surface_unmap_image,
_cairo_surface_default_source,
_cairo_quartz_image_surface_acquire_source_image,
NULL, /* release_source_image */
NULL, /* snapshot */
NULL, /* copy_page */
NULL, /* show_page */
_cairo_quartz_image_surface_get_extents,
NULL, /* get_font_options */
_cairo_quartz_image_surface_flush,
NULL, /* mark_dirty_rectangle */
_cairo_quartz_image_surface_paint,
_cairo_quartz_image_surface_mask,
_cairo_quartz_image_surface_stroke,
_cairo_quartz_image_surface_fill,
NULL, /* fill-stroke */
_cairo_quartz_image_surface_glyphs,
};
/**
* cairo_quartz_image_surface_create:
* @image_surface: a cairo image surface to wrap with a quartz image surface
*
* Creates a Quartz surface backed by a CGImageRef that references the
* given image surface. The resulting surface can be rendered quickly
* when used as a source when rendering to a #cairo_quartz_surface. If
* the data in the image surface is ever updated, cairo_surface_flush()
* must be called on the #cairo_quartz_image_surface to ensure that the
* CGImageRef refers to the updated data.
*
* Return value: the newly created surface.
*
* Since: 1.6
**/
cairo_surface_t *
cairo_quartz_image_surface_create (cairo_surface_t *surface)
{
cairo_quartz_image_surface_t *qisurf;
CGImageRef image;
cairo_image_surface_t *image_surface;
int width, height, stride;
cairo_format_t format;
unsigned char *data;
if (surface->status)
return surface;
if (! _cairo_surface_is_image (surface))
return SURFACE_ERROR_TYPE_MISMATCH;
image_surface = (cairo_image_surface_t*) surface;
width = image_surface->width;
height = image_surface->height;
stride = image_surface->stride;
format = image_surface->format;
data = image_surface->data;
if (!_cairo_quartz_verify_surface_size(width, height))
return SURFACE_ERROR_INVALID_SIZE;
if (width == 0 || height == 0)
return SURFACE_ERROR_INVALID_SIZE;
if (format != CAIRO_FORMAT_ARGB32 && format != CAIRO_FORMAT_RGB24)
return SURFACE_ERROR_INVALID_FORMAT;
qisurf = malloc(sizeof(cairo_quartz_image_surface_t));
if (qisurf == NULL)
return SURFACE_ERROR_NO_MEMORY;
memset (qisurf, 0, sizeof(cairo_quartz_image_surface_t));
/* In case the create_cgimage fails, this ref will
* be released via the callback (which will be called in
* case of failure.)
*/
cairo_surface_reference (surface);
image = CairoQuartzCreateCGImage (format,
width, height,
stride,
data,
TRUE,
NULL,
DataProviderReleaseCallback,
image_surface);
if (!image) {
free (qisurf);
return SURFACE_ERROR_NO_MEMORY;
}
_cairo_surface_init (&qisurf->base,
&cairo_quartz_image_surface_backend,
NULL, /* device */
_cairo_content_from_format (format));
qisurf->width = width;
qisurf->height = height;
qisurf->image = image;
qisurf->imageSurface = image_surface;
return &qisurf->base;
}
cairo_surface_t *
cairo_quartz_image_surface_get_image (cairo_surface_t *asurface)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t*) asurface;
/* Throw an error for a non-quartz surface */
if (! _cairo_surface_is_quartz (asurface)) {
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
}
return (cairo_surface_t*) surface->imageSurface;
}