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a69335a84e
A common requirement is the fast upload of pixel data. In order to allocate the most appropriate image buffer, we need knowledge of the destination. The most obvious example is that we could use a shared-memory region for the image to avoid the transfer cost of uploading the pixels to the X server. Similarly, gl, win32, quartz... The other side of the equation is that for manual modification of a remote surface, it would be more efficient if we can create a similar image to reduce the transfer costs. This strategy is already followed for the destination fallbacks and this merely exposes the same capability for the application fallbacks. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
281 lines
8.5 KiB
C
281 lines
8.5 KiB
C
/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2005 Red Hat, Inc
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* Copyright © Chris Wilson
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*
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* This library is free software; you can redistribute it and/or
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* modify it either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is Red Hat, Inc.
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*
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* Contributor(s):
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* Carl Worth <cworth@cworth.org>
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* Chris Wilson <chris@chris-wilson.co.uk>
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*/
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/* Another mythical surface that exists to simply wrap another - do nothing
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* itself but forward the calls onto a target surface.
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*/
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#include "cairoint.h"
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#include "test-wrapping-surface.h"
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#include "cairo-default-context-private.h"
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#include "cairo-error-private.h"
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#include "cairo-surface-wrapper-private.h"
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typedef struct _test_wrapping_surface {
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cairo_surface_t base;
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cairo_surface_wrapper_t wrapper;
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} test_wrapping_surface_t;
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static const cairo_surface_backend_t test_wrapping_surface_backend;
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slim_hidden_proto (_cairo_test_wrapping_surface_create);
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cairo_surface_t *
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_cairo_test_wrapping_surface_create (cairo_surface_t *target)
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{
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test_wrapping_surface_t *surface;
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if (unlikely (target->status))
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return _cairo_surface_create_in_error (target->status);
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surface = malloc (sizeof (test_wrapping_surface_t));
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if (unlikely (surface == NULL))
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return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
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_cairo_surface_init (&surface->base,
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&test_wrapping_surface_backend,
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NULL, /* device */
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target->content);
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_cairo_surface_wrapper_init (&surface->wrapper, target);
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return &surface->base;
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}
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slim_hidden_def (_cairo_test_wrapping_surface_create);
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static cairo_surface_t *
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_test_wrapping_surface_create_similar (void *abstract_surface,
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cairo_content_t content,
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int width,
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int height)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_test_wrapping_surface_create (
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_cairo_surface_wrapper_create_similar (&surface->wrapper,
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content, width, height));
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}
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static cairo_status_t
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_test_wrapping_surface_finish (void *abstract_surface)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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_cairo_surface_wrapper_fini (&surface->wrapper);
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_status_t
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_test_wrapping_surface_acquire_source_image (void *abstract_surface,
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cairo_image_surface_t **image_out,
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void **image_extra)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_surface_wrapper_acquire_source_image (&surface->wrapper,
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image_out, image_extra);
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}
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static void
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_test_wrapping_surface_release_source_image (void *abstract_surface,
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cairo_image_surface_t *image,
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void *image_extra)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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_cairo_surface_wrapper_release_source_image (&surface->wrapper,
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image, image_extra);
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}
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static cairo_bool_t
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_test_wrapping_surface_get_extents (void *abstract_surface,
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cairo_rectangle_int_t *rectangle)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_surface_wrapper_get_extents (&surface->wrapper, rectangle);
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}
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static cairo_int_status_t
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_test_wrapping_surface_paint (void *abstract_surface,
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cairo_operator_t op,
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const cairo_pattern_t *source,
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const cairo_clip_t *clip)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_surface_wrapper_paint (&surface->wrapper, op, source, clip);
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}
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static cairo_int_status_t
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_test_wrapping_surface_mask (void *abstract_surface,
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cairo_operator_t op,
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const cairo_pattern_t *source,
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const cairo_pattern_t *mask,
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const cairo_clip_t *clip)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_surface_wrapper_mask (&surface->wrapper,
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op, source, mask, clip);
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}
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static cairo_int_status_t
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_test_wrapping_surface_stroke (void *abstract_surface,
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cairo_operator_t op,
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const cairo_pattern_t *source,
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const cairo_path_fixed_t *path,
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const cairo_stroke_style_t *style,
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const cairo_matrix_t *ctm,
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const cairo_matrix_t *ctm_inverse,
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double tolerance,
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cairo_antialias_t antialias,
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const cairo_clip_t *clip)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_surface_wrapper_stroke (&surface->wrapper,
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op, source,
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path, style,
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ctm, ctm_inverse,
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tolerance, antialias,
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clip);
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}
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static cairo_int_status_t
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_test_wrapping_surface_fill (void *abstract_surface,
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cairo_operator_t op,
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const cairo_pattern_t *source,
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const cairo_path_fixed_t *path,
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cairo_fill_rule_t fill_rule,
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double tolerance,
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cairo_antialias_t antialias,
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const cairo_clip_t *clip)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_surface_wrapper_fill (&surface->wrapper,
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op, source,
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path, fill_rule,
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tolerance, antialias,
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clip);
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}
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static cairo_bool_t
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_test_wrapping_surface_has_show_text_glyphs (void *abstract_surface)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_surface_wrapper_has_show_text_glyphs (&surface->wrapper);
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}
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static cairo_int_status_t
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_test_wrapping_surface_show_text_glyphs (void *abstract_surface,
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cairo_operator_t op,
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const cairo_pattern_t *source,
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const char *utf8,
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int utf8_len,
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cairo_glyph_t *glyphs,
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int num_glyphs,
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const cairo_text_cluster_t *clusters,
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int num_clusters,
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cairo_text_cluster_flags_t cluster_flags,
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cairo_scaled_font_t *scaled_font,
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const cairo_clip_t *clip)
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{
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test_wrapping_surface_t *surface = abstract_surface;
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return _cairo_surface_wrapper_show_text_glyphs (&surface->wrapper,
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op, source,
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utf8, utf8_len,
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glyphs, num_glyphs,
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clusters, num_clusters,
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cluster_flags,
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scaled_font,
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clip);
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}
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static const cairo_surface_backend_t test_wrapping_surface_backend = {
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CAIRO_INTERNAL_SURFACE_TYPE_TEST_WRAPPING,
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_test_wrapping_surface_finish,
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_cairo_default_context_create,
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_test_wrapping_surface_create_similar,
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NULL, /* create similar image */
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NULL, /* map to image */
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NULL, /* unmap image */
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_test_wrapping_surface_acquire_source_image,
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_test_wrapping_surface_release_source_image,
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NULL, NULL, /* dest_image */
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NULL, /* clone_similar */
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NULL, /* composite */
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NULL, /* fill_rectangles */
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NULL, /* composite_trapezoids */
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NULL, /* create_span_renderer */
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NULL, /* check_span_renderer */
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NULL, /* copy_page */
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NULL, /* show_page */
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_test_wrapping_surface_get_extents,
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NULL, /* old_show_glyphs */
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NULL, /* get_font_options */
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NULL, /* flush */
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NULL, /* mark_dirty_rectangle */
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NULL, /* scaled_font_fini */
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NULL, /* scaled_glyph_fini */
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_test_wrapping_surface_paint,
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_test_wrapping_surface_mask,
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_test_wrapping_surface_stroke,
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_test_wrapping_surface_fill,
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NULL, /* replaced by show_text_glyphs */
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NULL, /* snapshot */
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NULL, /* is_similar */
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NULL, /* fill_stroke */
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NULL, /* create_solid_pattern_surface */
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NULL, /* can_repaint_solid_pattern_surface */
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_test_wrapping_surface_has_show_text_glyphs,
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_test_wrapping_surface_show_text_glyphs
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/* XXX wrap fill-stroke and show_glyphs */
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};
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