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Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-surface-offset.c')
-rw-r--r--libs/cairo-1.16.0/src/cairo-surface-offset.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-surface-offset.c b/libs/cairo-1.16.0/src/cairo-surface-offset.c
new file mode 100644
index 0000000..98f57f2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-offset.c
@@ -0,0 +1,308 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2007 Adrian Johnson
+ * Copyright © 2009 Chris Wilson
+ *
+ * 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 Red Hat, Inc.
+ *
+ * Contributor(s):
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-offset-private.h"
+
+/* A collection of routines to facilitate drawing to an alternate surface. */
+
+static void
+_copy_transformed_pattern (cairo_pattern_t *pattern,
+ const cairo_pattern_t *original,
+ const cairo_matrix_t *ctm_inverse)
+{
+ _cairo_pattern_init_static_copy (pattern, original);
+
+ if (! _cairo_matrix_is_identity (ctm_inverse))
+ _cairo_pattern_transform (pattern, ctm_inverse);
+}
+
+cairo_status_t
+_cairo_surface_offset_paint (cairo_surface_t *target,
+ int x, int y,
+ cairo_operator_t op,
+ const cairo_pattern_t *source,
+ const cairo_clip_t *clip)
+{
+ cairo_status_t status;
+ cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+ cairo_pattern_union_t source_copy;
+
+ if (unlikely (target->status))
+ return target->status;
+
+ if (_cairo_clip_is_all_clipped (clip))
+ return CAIRO_STATUS_SUCCESS;
+
+ if (x | y) {
+ cairo_matrix_t m;
+
+ dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+ cairo_matrix_init_translate (&m, x, y);
+ _copy_transformed_pattern (&source_copy.base, source, &m);
+ source = &source_copy.base;
+ }
+
+ status = _cairo_surface_paint (target, op, source, dev_clip);
+
+ if (dev_clip != clip)
+ _cairo_clip_destroy (dev_clip);
+
+ return status;
+}
+
+cairo_status_t
+_cairo_surface_offset_mask (cairo_surface_t *target,
+ int x, int y,
+ cairo_operator_t op,
+ const cairo_pattern_t *source,
+ const cairo_pattern_t *mask,
+ const cairo_clip_t *clip)
+{
+ cairo_status_t status;
+ cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+ cairo_pattern_union_t source_copy;
+ cairo_pattern_union_t mask_copy;
+
+ if (unlikely (target->status))
+ return target->status;
+
+ if (_cairo_clip_is_all_clipped (clip))
+ return CAIRO_STATUS_SUCCESS;
+
+ if (x | y) {
+ cairo_matrix_t m;
+
+ dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+ cairo_matrix_init_translate (&m, x, y);
+ _copy_transformed_pattern (&source_copy.base, source, &m);
+ _copy_transformed_pattern (&mask_copy.base, mask, &m);
+ source = &source_copy.base;
+ mask = &mask_copy.base;
+ }
+
+ status = _cairo_surface_mask (target, op,
+ source, mask,
+ dev_clip);
+
+ if (dev_clip != clip)
+ _cairo_clip_destroy (dev_clip);
+
+ return status;
+}
+
+cairo_status_t
+_cairo_surface_offset_stroke (cairo_surface_t *surface,
+ int x, int y,
+ cairo_operator_t op,
+ const cairo_pattern_t *source,
+ const cairo_path_fixed_t *path,
+ const cairo_stroke_style_t*stroke_style,
+ const cairo_matrix_t *ctm,
+ const cairo_matrix_t *ctm_inverse,
+ double tolerance,
+ cairo_antialias_t antialias,
+ const cairo_clip_t *clip)
+{
+ cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
+ cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+ cairo_matrix_t dev_ctm = *ctm;
+ cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
+ cairo_pattern_union_t source_copy;
+ cairo_status_t status;
+
+ if (unlikely (surface->status))
+ return surface->status;
+
+ if (_cairo_clip_is_all_clipped (clip))
+ return CAIRO_STATUS_SUCCESS;
+
+ if (x | y) {
+ cairo_matrix_t m;
+
+ dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+ status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
+ if (unlikely (status))
+ goto FINISH;
+
+ _cairo_path_fixed_translate (&path_copy,
+ _cairo_fixed_from_int (-x),
+ _cairo_fixed_from_int (-y));
+ dev_path = &path_copy;
+
+ cairo_matrix_init_translate (&m, -x, -y);
+ cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
+
+ cairo_matrix_init_translate (&m, x, y);
+ _copy_transformed_pattern (&source_copy.base, source, &m);
+ source = &source_copy.base;
+ cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
+ }
+
+ status = _cairo_surface_stroke (surface, op, source,
+ dev_path, stroke_style,
+ &dev_ctm, &dev_ctm_inverse,
+ tolerance, antialias,
+ dev_clip);
+
+FINISH:
+ if (dev_path != path)
+ _cairo_path_fixed_fini (dev_path);
+ if (dev_clip != clip)
+ _cairo_clip_destroy (dev_clip);
+
+ return status;
+}
+
+cairo_status_t
+_cairo_surface_offset_fill (cairo_surface_t *surface,
+ int x, int y,
+ 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_status_t status;
+ cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
+ cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+ cairo_pattern_union_t source_copy;
+
+ if (unlikely (surface->status))
+ return surface->status;
+
+ if (_cairo_clip_is_all_clipped (clip))
+ return CAIRO_STATUS_SUCCESS;
+
+ if (x | y) {
+ cairo_matrix_t m;
+
+ dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+ status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
+ if (unlikely (status))
+ goto FINISH;
+
+ _cairo_path_fixed_translate (&path_copy,
+ _cairo_fixed_from_int (-x),
+ _cairo_fixed_from_int (-y));
+ dev_path = &path_copy;
+
+ cairo_matrix_init_translate (&m, x, y);
+ _copy_transformed_pattern (&source_copy.base, source, &m);
+ source = &source_copy.base;
+ }
+
+ status = _cairo_surface_fill (surface, op, source,
+ dev_path, fill_rule,
+ tolerance, antialias,
+ dev_clip);
+
+FINISH:
+ if (dev_path != path)
+ _cairo_path_fixed_fini (dev_path);
+ if (dev_clip != clip)
+ _cairo_clip_destroy (dev_clip);
+
+ return status;
+}
+
+cairo_status_t
+_cairo_surface_offset_glyphs (cairo_surface_t *surface,
+ int x, int y,
+ cairo_operator_t op,
+ const cairo_pattern_t *source,
+ cairo_scaled_font_t *scaled_font,
+ cairo_glyph_t *glyphs,
+ int num_glyphs,
+ const cairo_clip_t *clip)
+{
+ cairo_status_t status;
+ cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+ cairo_pattern_union_t source_copy;
+ cairo_glyph_t *dev_glyphs;
+ int i;
+
+ if (unlikely (surface->status))
+ return surface->status;
+
+ if (_cairo_clip_is_all_clipped (clip))
+ return CAIRO_STATUS_SUCCESS;
+
+ dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+ if (dev_glyphs == NULL)
+ return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+ memcpy (dev_glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
+
+ if (x | y) {
+ cairo_matrix_t m;
+
+ dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+ cairo_matrix_init_translate (&m, x, y);
+ _copy_transformed_pattern (&source_copy.base, source, &m);
+ source = &source_copy.base;
+
+ for (i = 0; i < num_glyphs; i++) {
+ dev_glyphs[i].x -= x;
+ dev_glyphs[i].y -= y;
+ }
+ }
+
+ status = _cairo_surface_show_text_glyphs (surface, op, source,
+ NULL, 0,
+ dev_glyphs, num_glyphs,
+ NULL, 0, 0,
+ scaled_font,
+ dev_clip);
+
+ if (dev_clip != clip)
+ _cairo_clip_destroy (dev_clip);
+ free (dev_glyphs);
+
+ return status;
+}
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