forked from KolibriOS/kolibrios
309 lines
8.5 KiB
C
309 lines
8.5 KiB
C
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/* 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 © 2007 Adrian Johnson
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* Copyright © 2009 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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* 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-pattern-private.h"
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#include "cairo-surface-offset-private.h"
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/* A collection of routines to facilitate drawing to an alternate surface. */
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static void
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_copy_transformed_pattern (cairo_pattern_t *pattern,
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const cairo_pattern_t *original,
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const cairo_matrix_t *ctm_inverse)
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{
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_cairo_pattern_init_static_copy (pattern, original);
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if (! _cairo_matrix_is_identity (ctm_inverse))
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_cairo_pattern_transform (pattern, ctm_inverse);
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}
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cairo_status_t
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_cairo_surface_offset_paint (cairo_surface_t *target,
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int x, int y,
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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_status_t status;
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cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
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cairo_pattern_union_t source_copy;
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if (unlikely (target->status))
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return target->status;
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if (_cairo_clip_is_all_clipped (clip))
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return CAIRO_STATUS_SUCCESS;
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if (x | y) {
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cairo_matrix_t m;
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dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
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cairo_matrix_init_translate (&m, x, y);
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_copy_transformed_pattern (&source_copy.base, source, &m);
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source = &source_copy.base;
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}
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status = _cairo_surface_paint (target, op, source, dev_clip);
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if (dev_clip != clip)
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_cairo_clip_destroy (dev_clip);
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return status;
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}
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cairo_status_t
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_cairo_surface_offset_mask (cairo_surface_t *target,
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int x, int y,
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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_status_t status;
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cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
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cairo_pattern_union_t source_copy;
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cairo_pattern_union_t mask_copy;
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if (unlikely (target->status))
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return target->status;
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if (_cairo_clip_is_all_clipped (clip))
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return CAIRO_STATUS_SUCCESS;
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if (x | y) {
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cairo_matrix_t m;
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dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
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cairo_matrix_init_translate (&m, x, y);
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_copy_transformed_pattern (&source_copy.base, source, &m);
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_copy_transformed_pattern (&mask_copy.base, mask, &m);
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source = &source_copy.base;
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mask = &mask_copy.base;
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}
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status = _cairo_surface_mask (target, op,
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source, mask,
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dev_clip);
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if (dev_clip != clip)
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_cairo_clip_destroy (dev_clip);
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return status;
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}
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cairo_status_t
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_cairo_surface_offset_stroke (cairo_surface_t *surface,
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int x, int y,
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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_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
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cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
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cairo_matrix_t dev_ctm = *ctm;
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cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
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cairo_pattern_union_t source_copy;
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cairo_status_t status;
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if (unlikely (surface->status))
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return surface->status;
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if (_cairo_clip_is_all_clipped (clip))
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return CAIRO_STATUS_SUCCESS;
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if (x | y) {
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cairo_matrix_t m;
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dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
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status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
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if (unlikely (status))
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goto FINISH;
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_cairo_path_fixed_translate (&path_copy,
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_cairo_fixed_from_int (-x),
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_cairo_fixed_from_int (-y));
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dev_path = &path_copy;
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cairo_matrix_init_translate (&m, -x, -y);
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cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
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cairo_matrix_init_translate (&m, x, y);
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_copy_transformed_pattern (&source_copy.base, source, &m);
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source = &source_copy.base;
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cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
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}
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status = _cairo_surface_stroke (surface, op, source,
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dev_path, stroke_style,
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&dev_ctm, &dev_ctm_inverse,
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tolerance, antialias,
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dev_clip);
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FINISH:
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if (dev_path != path)
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_cairo_path_fixed_fini (dev_path);
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if (dev_clip != clip)
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_cairo_clip_destroy (dev_clip);
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return status;
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}
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cairo_status_t
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_cairo_surface_offset_fill (cairo_surface_t *surface,
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int x, int y,
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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_status_t status;
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cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
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cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
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cairo_pattern_union_t source_copy;
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if (unlikely (surface->status))
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return surface->status;
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if (_cairo_clip_is_all_clipped (clip))
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return CAIRO_STATUS_SUCCESS;
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if (x | y) {
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cairo_matrix_t m;
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dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
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status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
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if (unlikely (status))
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goto FINISH;
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_cairo_path_fixed_translate (&path_copy,
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_cairo_fixed_from_int (-x),
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_cairo_fixed_from_int (-y));
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dev_path = &path_copy;
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cairo_matrix_init_translate (&m, x, y);
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_copy_transformed_pattern (&source_copy.base, source, &m);
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source = &source_copy.base;
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}
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status = _cairo_surface_fill (surface, op, source,
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dev_path, fill_rule,
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tolerance, antialias,
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dev_clip);
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FINISH:
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if (dev_path != path)
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_cairo_path_fixed_fini (dev_path);
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if (dev_clip != clip)
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_cairo_clip_destroy (dev_clip);
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return status;
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}
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cairo_status_t
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_cairo_surface_offset_glyphs (cairo_surface_t *surface,
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int x, int y,
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cairo_operator_t op,
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const cairo_pattern_t *source,
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cairo_scaled_font_t *scaled_font,
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cairo_glyph_t *glyphs,
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int num_glyphs,
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const cairo_clip_t *clip)
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{
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cairo_status_t status;
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cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
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cairo_pattern_union_t source_copy;
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cairo_glyph_t *dev_glyphs;
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int i;
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if (unlikely (surface->status))
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return surface->status;
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if (_cairo_clip_is_all_clipped (clip))
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return CAIRO_STATUS_SUCCESS;
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dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
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if (dev_glyphs == NULL)
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return _cairo_error (CAIRO_STATUS_NO_MEMORY);
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memcpy (dev_glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
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if (x | y) {
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cairo_matrix_t m;
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dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
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cairo_matrix_init_translate (&m, x, y);
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_copy_transformed_pattern (&source_copy.base, source, &m);
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source = &source_copy.base;
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for (i = 0; i < num_glyphs; i++) {
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dev_glyphs[i].x -= x;
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dev_glyphs[i].y -= y;
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}
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}
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status = _cairo_surface_show_text_glyphs (surface, op, source,
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NULL, 0,
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dev_glyphs, num_glyphs,
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NULL, 0, 0,
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scaled_font,
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dev_clip);
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if (dev_clip != clip)
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_cairo_clip_destroy (dev_clip);
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free (dev_glyphs);
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return status;
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}
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