upload sdk
git-svn-id: svn://kolibrios.org@4349 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
571
contrib/sdk/sources/cairo/src/cairo-surface-subsurface.c
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571
contrib/sdk/sources/cairo/src/cairo-surface-subsurface.c
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@@ -0,0 +1,571 @@
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/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2009 Intel Corporation
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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
|
||||
* 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
|
||||
* 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.
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||||
*
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||||
* 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
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* You should have received a copy of the MPL along with this library
|
||||
* 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
|
||||
* 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/
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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
|
||||
* 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 Intel Corporation.
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*
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* Contributor(s):
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* Chris Wilson <chris@chris-wilson.co.uk>
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*/
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#include "cairoint.h"
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#include "cairo-clip-inline.h"
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#include "cairo-error-private.h"
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#include "cairo-image-surface-private.h"
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#include "cairo-recording-surface-private.h"
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#include "cairo-surface-offset-private.h"
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#include "cairo-surface-snapshot-private.h"
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#include "cairo-surface-subsurface-private.h"
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static const cairo_surface_backend_t _cairo_surface_subsurface_backend;
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static cairo_status_t
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_cairo_surface_subsurface_finish (void *abstract_surface)
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{
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cairo_surface_subsurface_t *surface = abstract_surface;
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cairo_surface_destroy (surface->target);
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cairo_surface_destroy (surface->snapshot);
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_surface_t *
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_cairo_surface_subsurface_create_similar (void *other,
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cairo_content_t content,
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int width, int height)
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{
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cairo_surface_subsurface_t *surface = other;
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if (surface->target->backend->create_similar == NULL)
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return NULL;
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return surface->target->backend->create_similar (surface->target, content, width, height);
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}
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static cairo_surface_t *
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_cairo_surface_subsurface_create_similar_image (void *other,
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cairo_format_t format,
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int width, int height)
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{
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cairo_surface_subsurface_t *surface = other;
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if (surface->target->backend->create_similar_image == NULL)
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return NULL;
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return surface->target->backend->create_similar_image (surface->target,
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format,
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width, height);
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}
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static cairo_image_surface_t *
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_cairo_surface_subsurface_map_to_image (void *abstract_surface,
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const cairo_rectangle_int_t *extents)
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{
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cairo_surface_subsurface_t *surface = abstract_surface;
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cairo_rectangle_int_t target_extents;
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target_extents.x = extents->x + surface->extents.x;
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target_extents.y = extents->y + surface->extents.y;
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target_extents.width = extents->width;
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target_extents.height = extents->height;
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return _cairo_surface_map_to_image (surface->target, &target_extents);
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}
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static cairo_int_status_t
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_cairo_surface_subsurface_unmap_image (void *abstract_surface,
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cairo_image_surface_t *image)
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{
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cairo_surface_subsurface_t *surface = abstract_surface;
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return _cairo_surface_unmap_image (surface->target, image);
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}
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static cairo_int_status_t
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_cairo_surface_subsurface_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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cairo_surface_subsurface_t *surface = abstract_surface;
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cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
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cairo_status_t status;
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cairo_clip_t *target_clip;
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target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
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status = _cairo_surface_offset_paint (surface->target,
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-surface->extents.x, -surface->extents.y,
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op, source, target_clip);
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_cairo_clip_destroy (target_clip);
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return status;
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}
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static cairo_int_status_t
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_cairo_surface_subsurface_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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cairo_surface_subsurface_t *surface = abstract_surface;
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cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
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cairo_status_t status;
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cairo_clip_t *target_clip;
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target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
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status = _cairo_surface_offset_mask (surface->target,
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-surface->extents.x, -surface->extents.y,
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op, source, mask, target_clip);
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_cairo_clip_destroy (target_clip);
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return status;
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}
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static cairo_int_status_t
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_cairo_surface_subsurface_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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cairo_surface_subsurface_t *surface = abstract_surface;
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cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
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cairo_status_t status;
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cairo_clip_t *target_clip;
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target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
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status = _cairo_surface_offset_fill (surface->target,
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-surface->extents.x, -surface->extents.y,
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op, source, path, fill_rule, tolerance, antialias,
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target_clip);
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_cairo_clip_destroy (target_clip);
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return status;
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}
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static cairo_int_status_t
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_cairo_surface_subsurface_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 *stroke_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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cairo_surface_subsurface_t *surface = abstract_surface;
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cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
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cairo_status_t status;
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cairo_clip_t *target_clip;
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target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
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status = _cairo_surface_offset_stroke (surface->target,
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-surface->extents.x, -surface->extents.y,
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op, source, path, stroke_style, ctm, ctm_inverse,
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tolerance, antialias,
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target_clip);
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_cairo_clip_destroy (target_clip);
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return status;
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}
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static cairo_int_status_t
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_cairo_surface_subsurface_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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cairo_glyph_t *glyphs,
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int num_glyphs,
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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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cairo_surface_subsurface_t *surface = abstract_surface;
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cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
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cairo_status_t status;
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cairo_clip_t *target_clip;
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target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
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status = _cairo_surface_offset_glyphs (surface->target,
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-surface->extents.x, -surface->extents.y,
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op, source,
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scaled_font, glyphs, num_glyphs,
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target_clip);
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_cairo_clip_destroy (target_clip);
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return status;
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}
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static cairo_status_t
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_cairo_surface_subsurface_flush (void *abstract_surface, unsigned flags)
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{
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cairo_surface_subsurface_t *surface = abstract_surface;
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return _cairo_surface_flush (surface->target, flags);
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}
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static cairo_status_t
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_cairo_surface_subsurface_mark_dirty (void *abstract_surface,
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int x, int y,
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int width, int height)
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{
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cairo_surface_subsurface_t *surface = abstract_surface;
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cairo_status_t status;
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status = CAIRO_STATUS_SUCCESS;
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if (surface->target->backend->mark_dirty_rectangle != NULL) {
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cairo_rectangle_int_t rect, extents;
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rect.x = x;
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rect.y = y;
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rect.width = width;
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rect.height = height;
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extents.x = extents.y = 0;
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extents.width = surface->extents.width;
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extents.height = surface->extents.height;
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if (_cairo_rectangle_intersect (&rect, &extents)) {
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status = surface->target->backend->mark_dirty_rectangle (surface->target,
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rect.x + surface->extents.x,
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rect.y + surface->extents.y,
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rect.width, rect.height);
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}
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}
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return status;
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}
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static cairo_bool_t
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_cairo_surface_subsurface_get_extents (void *abstract_surface,
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cairo_rectangle_int_t *extents)
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{
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cairo_surface_subsurface_t *surface = abstract_surface;
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extents->x = 0;
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extents->y = 0;
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extents->width = surface->extents.width;
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extents->height = surface->extents.height;
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return TRUE;
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}
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static void
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_cairo_surface_subsurface_get_font_options (void *abstract_surface,
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cairo_font_options_t *options)
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{
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cairo_surface_subsurface_t *surface = abstract_surface;
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||||
if (surface->target->backend->get_font_options != NULL)
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surface->target->backend->get_font_options (surface->target, options);
|
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}
|
||||
|
||||
static cairo_surface_t *
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_cairo_surface_subsurface_source (void *abstract_surface,
|
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cairo_rectangle_int_t *extents)
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{
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cairo_surface_subsurface_t *surface = abstract_surface;
|
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cairo_surface_t *source;
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source = _cairo_surface_get_source (surface->target, extents);
|
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if (extents)
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*extents = surface->extents;
|
||||
|
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return source;
|
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}
|
||||
|
||||
static cairo_status_t
|
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_cairo_surface_subsurface_acquire_source_image (void *abstract_surface,
|
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cairo_image_surface_t **image_out,
|
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void **extra_out)
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||||
{
|
||||
cairo_surface_subsurface_t *surface = abstract_surface;
|
||||
cairo_surface_pattern_t pattern;
|
||||
cairo_surface_t *image;
|
||||
cairo_status_t status;
|
||||
|
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image = _cairo_image_surface_create_with_content (surface->base.content,
|
||||
surface->extents.width,
|
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surface->extents.height);
|
||||
if (unlikely (image->status))
|
||||
return image->status;
|
||||
|
||||
_cairo_pattern_init_for_surface (&pattern, surface->target);
|
||||
cairo_matrix_init_translate (&pattern.base.matrix,
|
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surface->extents.x,
|
||||
surface->extents.y);
|
||||
pattern.base.filter = CAIRO_FILTER_NEAREST;
|
||||
status = _cairo_surface_paint (image,
|
||||
CAIRO_OPERATOR_SOURCE,
|
||||
&pattern.base, NULL);
|
||||
_cairo_pattern_fini (&pattern.base);
|
||||
if (unlikely (status)) {
|
||||
cairo_surface_destroy (image);
|
||||
return status;
|
||||
}
|
||||
|
||||
*image_out = (cairo_image_surface_t *)image;
|
||||
*extra_out = NULL;
|
||||
return CAIRO_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
static void
|
||||
_cairo_surface_subsurface_release_source_image (void *abstract_surface,
|
||||
cairo_image_surface_t *image,
|
||||
void *abstract_extra)
|
||||
{
|
||||
cairo_surface_destroy (&image->base);
|
||||
}
|
||||
|
||||
static cairo_surface_t *
|
||||
_cairo_surface_subsurface_snapshot (void *abstract_surface)
|
||||
{
|
||||
cairo_surface_subsurface_t *surface = abstract_surface;
|
||||
cairo_surface_pattern_t pattern;
|
||||
cairo_surface_t *clone;
|
||||
cairo_status_t status;
|
||||
|
||||
TRACE ((stderr, "%s: target=%d\n", __FUNCTION__, surface->target->unique_id));
|
||||
|
||||
clone = _cairo_surface_create_similar_scratch (surface->target,
|
||||
surface->target->content,
|
||||
surface->extents.width,
|
||||
surface->extents.height);
|
||||
if (unlikely (clone->status))
|
||||
return clone;
|
||||
|
||||
_cairo_pattern_init_for_surface (&pattern, surface->target);
|
||||
cairo_matrix_init_translate (&pattern.base.matrix,
|
||||
surface->extents.x, surface->extents.y);
|
||||
pattern.base.filter = CAIRO_FILTER_NEAREST;
|
||||
status = _cairo_surface_paint (clone,
|
||||
CAIRO_OPERATOR_SOURCE,
|
||||
&pattern.base, NULL);
|
||||
_cairo_pattern_fini (&pattern.base);
|
||||
|
||||
if (unlikely (status)) {
|
||||
cairo_surface_destroy (clone);
|
||||
clone = _cairo_surface_create_in_error (status);
|
||||
}
|
||||
|
||||
return clone;
|
||||
}
|
||||
|
||||
static cairo_t *
|
||||
_cairo_surface_subsurface_create_context(void *target)
|
||||
{
|
||||
cairo_surface_subsurface_t *surface = target;
|
||||
return surface->target->backend->create_context (&surface->base);
|
||||
}
|
||||
|
||||
static const cairo_surface_backend_t _cairo_surface_subsurface_backend = {
|
||||
CAIRO_SURFACE_TYPE_SUBSURFACE,
|
||||
_cairo_surface_subsurface_finish,
|
||||
|
||||
_cairo_surface_subsurface_create_context,
|
||||
|
||||
_cairo_surface_subsurface_create_similar,
|
||||
_cairo_surface_subsurface_create_similar_image,
|
||||
_cairo_surface_subsurface_map_to_image,
|
||||
_cairo_surface_subsurface_unmap_image,
|
||||
|
||||
_cairo_surface_subsurface_source,
|
||||
_cairo_surface_subsurface_acquire_source_image,
|
||||
_cairo_surface_subsurface_release_source_image,
|
||||
_cairo_surface_subsurface_snapshot,
|
||||
|
||||
NULL, /* copy_page */
|
||||
NULL, /* show_page */
|
||||
|
||||
_cairo_surface_subsurface_get_extents,
|
||||
_cairo_surface_subsurface_get_font_options,
|
||||
|
||||
_cairo_surface_subsurface_flush,
|
||||
_cairo_surface_subsurface_mark_dirty,
|
||||
|
||||
_cairo_surface_subsurface_paint,
|
||||
_cairo_surface_subsurface_mask,
|
||||
_cairo_surface_subsurface_stroke,
|
||||
_cairo_surface_subsurface_fill,
|
||||
NULL, /* fill/stroke */
|
||||
_cairo_surface_subsurface_glyphs,
|
||||
};
|
||||
|
||||
/**
|
||||
* cairo_surface_create_for_rectangle:
|
||||
* @target: an existing surface for which the sub-surface will point to
|
||||
* @x: the x-origin of the sub-surface from the top-left of the target surface (in device-space units)
|
||||
* @y: the y-origin of the sub-surface from the top-left of the target surface (in device-space units)
|
||||
* @width: width of the sub-surface (in device-space units)
|
||||
* @height: height of the sub-surface (in device-space units)
|
||||
*
|
||||
* Create a new surface that is a rectangle within the target surface.
|
||||
* All operations drawn to this surface are then clipped and translated
|
||||
* onto the target surface. Nothing drawn via this sub-surface outside of
|
||||
* its bounds is drawn onto the target surface, making this a useful method
|
||||
* for passing constrained child surfaces to library routines that draw
|
||||
* directly onto the parent surface, i.e. with no further backend allocations,
|
||||
* double buffering or copies.
|
||||
*
|
||||
* <note><para>The semantics of subsurfaces have not been finalized yet
|
||||
* unless the rectangle is in full device units, is contained within
|
||||
* the extents of the target surface, and the target or subsurface's
|
||||
* device transforms are not changed.</para></note>
|
||||
*
|
||||
* Return value: a pointer to the newly allocated surface. The caller
|
||||
* owns the surface and should call cairo_surface_destroy() when done
|
||||
* with it.
|
||||
*
|
||||
* This function always returns a valid pointer, but it will return a
|
||||
* pointer to a "nil" surface if @other is already in an error state
|
||||
* or any other error occurs.
|
||||
*
|
||||
* Since: 1.10
|
||||
**/
|
||||
cairo_surface_t *
|
||||
cairo_surface_create_for_rectangle (cairo_surface_t *target,
|
||||
double x, double y,
|
||||
double width, double height)
|
||||
{
|
||||
cairo_surface_subsurface_t *surface;
|
||||
|
||||
if (unlikely (width < 0 || height < 0))
|
||||
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
|
||||
|
||||
if (unlikely (target->status))
|
||||
return _cairo_surface_create_in_error (target->status);
|
||||
if (unlikely (target->finished))
|
||||
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
|
||||
|
||||
surface = malloc (sizeof (cairo_surface_subsurface_t));
|
||||
if (unlikely (surface == NULL))
|
||||
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
|
||||
|
||||
assert (_cairo_matrix_is_translation (&target->device_transform));
|
||||
x += target->device_transform.x0;
|
||||
y += target->device_transform.y0;
|
||||
|
||||
_cairo_surface_init (&surface->base,
|
||||
&_cairo_surface_subsurface_backend,
|
||||
NULL, /* device */
|
||||
target->content);
|
||||
|
||||
/* XXX forced integer alignment */
|
||||
surface->extents.x = ceil (x);
|
||||
surface->extents.y = ceil (y);
|
||||
surface->extents.width = floor (x + width) - surface->extents.x;
|
||||
surface->extents.height = floor (y + height) - surface->extents.y;
|
||||
if ((surface->extents.width | surface->extents.height) < 0)
|
||||
surface->extents.width = surface->extents.height = 0;
|
||||
|
||||
if (target->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
|
||||
/* Maintain subsurfaces as 1-depth */
|
||||
cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) target;
|
||||
surface->extents.x += sub->extents.x;
|
||||
surface->extents.y += sub->extents.y;
|
||||
target = sub->target;
|
||||
}
|
||||
|
||||
surface->target = cairo_surface_reference (target);
|
||||
surface->base.type = surface->target->type;
|
||||
|
||||
surface->snapshot = NULL;
|
||||
|
||||
return &surface->base;
|
||||
}
|
||||
|
||||
cairo_surface_t *
|
||||
_cairo_surface_create_for_rectangle_int (cairo_surface_t *target,
|
||||
const cairo_rectangle_int_t *extents)
|
||||
{
|
||||
cairo_surface_subsurface_t *surface;
|
||||
|
||||
if (unlikely (target->status))
|
||||
return _cairo_surface_create_in_error (target->status);
|
||||
if (unlikely (target->finished))
|
||||
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
|
||||
|
||||
assert (target->backend->type != CAIRO_SURFACE_TYPE_SUBSURFACE);
|
||||
|
||||
surface = malloc (sizeof (cairo_surface_subsurface_t));
|
||||
if (unlikely (surface == NULL))
|
||||
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
|
||||
|
||||
assert (_cairo_matrix_is_translation (&target->device_transform));
|
||||
|
||||
_cairo_surface_init (&surface->base,
|
||||
&_cairo_surface_subsurface_backend,
|
||||
NULL, /* device */
|
||||
target->content);
|
||||
|
||||
surface->extents = *extents;
|
||||
surface->extents.x += target->device_transform.x0;
|
||||
surface->extents.y += target->device_transform.y0;
|
||||
|
||||
surface->target = cairo_surface_reference (target);
|
||||
surface->base.type = surface->target->type;
|
||||
|
||||
surface->snapshot = NULL;
|
||||
|
||||
return &surface->base;
|
||||
}
|
||||
/* XXX observe mark-dirty */
|
||||
|
||||
static void
|
||||
_cairo_surface_subsurface_detach_snapshot (cairo_surface_t *surface)
|
||||
{
|
||||
cairo_surface_subsurface_t *ss = (cairo_surface_subsurface_t *) surface;
|
||||
|
||||
TRACE ((stderr, "%s: target=%d\n", __FUNCTION__, ss->target->unique_id));
|
||||
|
||||
cairo_surface_destroy (ss->snapshot);
|
||||
ss->snapshot = NULL;
|
||||
}
|
||||
|
||||
void
|
||||
_cairo_surface_subsurface_set_snapshot (cairo_surface_t *surface,
|
||||
cairo_surface_t *snapshot)
|
||||
{
|
||||
cairo_surface_subsurface_t *ss = (cairo_surface_subsurface_t *) surface;
|
||||
|
||||
TRACE ((stderr, "%s: target=%d, snapshot=%d\n", __FUNCTION__,
|
||||
ss->target->unique_id, snapshot->unique_id));
|
||||
|
||||
/* FIXME: attaching the subsurface as a snapshot to its target creates
|
||||
* a reference cycle. Let's make this call as a no-op until that bug
|
||||
* is fixed.
|
||||
*/
|
||||
return;
|
||||
|
||||
if (ss->snapshot)
|
||||
_cairo_surface_detach_snapshot (ss->snapshot);
|
||||
|
||||
ss->snapshot = cairo_surface_reference (snapshot);
|
||||
|
||||
_cairo_surface_attach_snapshot (ss->target, &ss->base,
|
||||
_cairo_surface_subsurface_detach_snapshot);
|
||||
}
|
||||
Reference in New Issue
Block a user