diff options
Diffstat (limited to 'gfx/cairo/cairo/src/cairo-quartz-image-surface.c')
| -rw-r--r-- | gfx/cairo/cairo/src/cairo-quartz-image-surface.c | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/gfx/cairo/cairo/src/cairo-quartz-image-surface.c b/gfx/cairo/cairo/src/cairo-quartz-image-surface.c new file mode 100644 index 000000000..9a18dd46e --- /dev/null +++ b/gfx/cairo/cairo/src/cairo-quartz-image-surface.c @@ -0,0 +1,290 @@ +/* -*- 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-quartz-image.h" +#include "cairo-quartz-private.h" + +#include "cairo-error-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 *result; + cairo_surface_t *isurf = + _cairo_image_surface_create_with_content (content, width, height); + if (cairo_surface_status(isurf)) + return isurf; + + 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_status_t +_cairo_quartz_image_surface_acquire_dest_image (void *asurface, + cairo_rectangle_int_t *interest_rect, + cairo_image_surface_t **image_out, + cairo_rectangle_int_t *image_rect, + void **image_extra) +{ + cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface; + + *image_out = surface->imageSurface; + *image_rect = surface->extents; + *image_extra = NULL; + + return CAIRO_STATUS_SUCCESS; +} + +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 = surface->extents; + 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) +{ + cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface; + CGImageRef oldImage = surface->image; + CGImageRef newImage = NULL; + + /* To be released by the ReleaseCallback */ + cairo_surface_reference ((cairo_surface_t*) surface->imageSurface); + + newImage = _cairo_quartz_create_cgimage (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); + + surface->base.is_clear = surface->imageSurface->base.is_clear; + + return CAIRO_STATUS_SUCCESS; +} + +static const cairo_surface_backend_t cairo_quartz_image_surface_backend = { + CAIRO_SURFACE_TYPE_QUARTZ_IMAGE, + _cairo_quartz_image_surface_create_similar, + _cairo_quartz_image_surface_finish, + _cairo_quartz_image_surface_acquire_source_image, + NULL, /* release_source_image */ + _cairo_quartz_image_surface_acquire_dest_image, + NULL, /* release_dest_image */ + NULL, /* clone_similar */ + NULL, /* composite */ + NULL, /* fill_rectangles */ + NULL, /* composite_trapezoids */ + NULL, /* create_span_renderer */ + NULL, /* check_span_renderer */ + NULL, /* copy_page */ + NULL, /* show_page */ + _cairo_quartz_image_surface_get_extents, + NULL, /* old_show_glyphs */ + NULL, /* get_font_options */ + _cairo_quartz_image_surface_flush, + NULL, /* mark_dirty_rectangle */ + NULL, /* scaled_font_fini */ + NULL, /* scaled_glyph_fini */ + + NULL, /* paint */ + NULL, /* mask */ + NULL, /* stroke */ + NULL, /* fill */ + NULL, /* surface_show_glyphs */ + NULL, /* snapshot */ + NULL, /* is_similar */ + NULL /* fill_stroke */ + +}; + +/** + * cairo_quartz_image_surface_create + * @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 (cairo_surface_get_type(surface) != CAIRO_SURFACE_TYPE_IMAGE) + 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 = _cairo_quartz_create_cgimage (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->extents.x = qisurf->extents.y = 0; + qisurf->extents.width = width; + qisurf->extents.height = height; + + qisurf->image = image; + qisurf->imageSurface = image_surface; + + qisurf->base.is_clear = image_surface->base.is_clear; + + 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; + + if (cairo_surface_get_type(asurface) != CAIRO_SURFACE_TYPE_QUARTZ_IMAGE) + return NULL; + + return (cairo_surface_t*) surface->imageSurface; +} |