switch to tinyobj and nanovg from assimp and cairo

1 files changed, 0 insertions, 2400 deletions

diff --git a/libs/cairo-1.16.0/src/cairo-gstate.c b/libs/cairo-1.16.0/src/cairo-gstate.c
deleted file mode 100644
index ff0cb8b..0000000
--- a/libs/cairo-1.16.0/src/cairo-gstate.c
+++ /dev/null
@@ -1,2400 +0,0 @@
-/* cairo - a vector graphics library with display and print output
- *
- * Copyright © 2002 University of Southern California
- * Copyright © 2005 Red Hat, Inc.
- *
- * 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 University of Southern
- * California.
- *
- * Contributor(s):
- *	Carl D. Worth <cworth@cworth.org>
- */
-
-#include "cairoint.h"
-
-#include "cairo-clip-inline.h"
-#include "cairo-clip-private.h"
-#include "cairo-error-private.h"
-#include "cairo-list-inline.h"
-#include "cairo-gstate-private.h"
-#include "cairo-pattern-private.h"
-#include "cairo-traps-private.h"
-
-static cairo_status_t
-_cairo_gstate_init_copy (cairo_gstate_t *gstate, cairo_gstate_t *other);
-
-static cairo_status_t
-_cairo_gstate_ensure_font_face (cairo_gstate_t *gstate);
-
-static cairo_status_t
-_cairo_gstate_ensure_scaled_font (cairo_gstate_t *gstate);
-
-static void
-_cairo_gstate_unset_scaled_font (cairo_gstate_t *gstate);
-
-static void
-_cairo_gstate_transform_glyphs_to_backend (cairo_gstate_t      *gstate,
-                                           const cairo_glyph_t *glyphs,
-                                           int                  num_glyphs,
-					   const cairo_text_cluster_t	*clusters,
-					   int			 num_clusters,
-					   cairo_text_cluster_flags_t cluster_flags,
-                                           cairo_glyph_t       *transformed_glyphs,
-					   int			*num_transformed_glyphs,
-					   cairo_text_cluster_t *transformed_clusters);
-
-static void
-_cairo_gstate_update_device_transform (cairo_observer_t *observer,
-				       void *arg)
-{
-    cairo_gstate_t *gstate = cairo_container_of (observer,
-						 cairo_gstate_t,
-						 device_transform_observer);
-
-    gstate->is_identity = (_cairo_matrix_is_identity (&gstate->ctm) &&
-			   _cairo_matrix_is_identity (&gstate->target->device_transform));
-}
-
-cairo_status_t
-_cairo_gstate_init (cairo_gstate_t  *gstate,
-		    cairo_surface_t *target)
-{
-    VG (VALGRIND_MAKE_MEM_UNDEFINED (gstate, sizeof (cairo_gstate_t)));
-
-    gstate->next = NULL;
-
-    gstate->op = CAIRO_GSTATE_OPERATOR_DEFAULT;
-    gstate->opacity = 1.;
-
-    gstate->tolerance = CAIRO_GSTATE_TOLERANCE_DEFAULT;
-    gstate->antialias = CAIRO_ANTIALIAS_DEFAULT;
-
-    _cairo_stroke_style_init (&gstate->stroke_style);
-
-    gstate->fill_rule = CAIRO_GSTATE_FILL_RULE_DEFAULT;
-
-    gstate->font_face = NULL;
-    gstate->scaled_font = NULL;
-    gstate->previous_scaled_font = NULL;
-
-    cairo_matrix_init_scale (&gstate->font_matrix,
-			     CAIRO_GSTATE_DEFAULT_FONT_SIZE,
-			     CAIRO_GSTATE_DEFAULT_FONT_SIZE);
-
-    _cairo_font_options_init_default (&gstate->font_options);
-
-    gstate->clip = NULL;
-
-    gstate->target = cairo_surface_reference (target);
-    gstate->parent_target = NULL;
-    gstate->original_target = cairo_surface_reference (target);
-
-    gstate->device_transform_observer.callback = _cairo_gstate_update_device_transform;
-    cairo_list_add (&gstate->device_transform_observer.link,
-		    &gstate->target->device_transform_observers);
-
-    gstate->is_identity = _cairo_matrix_is_identity (&gstate->target->device_transform);
-    cairo_matrix_init_identity (&gstate->ctm);
-    gstate->ctm_inverse = gstate->ctm;
-    gstate->source_ctm_inverse = gstate->ctm;
-
-    gstate->source = (cairo_pattern_t *) &_cairo_pattern_black.base;
-
-    /* Now that the gstate is fully initialized and ready for the eventual
-     * _cairo_gstate_fini(), we can check for errors (and not worry about
-     * the resource deallocation). */
-    return target->status;
-}
-
-/**
- * _cairo_gstate_init_copy:
- *
- * Initialize @gstate by performing a deep copy of state fields from
- * @other. Note that gstate->next is not copied but is set to %NULL by
- * this function.
- **/
-static cairo_status_t
-_cairo_gstate_init_copy (cairo_gstate_t *gstate, cairo_gstate_t *other)
-{
-    cairo_status_t status;
-
-    VG (VALGRIND_MAKE_MEM_UNDEFINED (gstate, sizeof (cairo_gstate_t)));
-
-    gstate->op = other->op;
-    gstate->opacity = other->opacity;
-
-    gstate->tolerance = other->tolerance;
-    gstate->antialias = other->antialias;
-
-    status = _cairo_stroke_style_init_copy (&gstate->stroke_style,
-					    &other->stroke_style);
-    if (unlikely (status))
-	return status;
-
-    gstate->fill_rule = other->fill_rule;
-
-    gstate->font_face = cairo_font_face_reference (other->font_face);
-    gstate->scaled_font = cairo_scaled_font_reference (other->scaled_font);
-    gstate->previous_scaled_font = cairo_scaled_font_reference (other->previous_scaled_font);
-
-    gstate->font_matrix = other->font_matrix;
-
-    _cairo_font_options_init_copy (&gstate->font_options , &other->font_options);
-
-    gstate->clip = _cairo_clip_copy (other->clip);
-
-    gstate->target = cairo_surface_reference (other->target);
-    /* parent_target is always set to NULL; it's only ever set by redirect_target */
-    gstate->parent_target = NULL;
-    gstate->original_target = cairo_surface_reference (other->original_target);
-
-    gstate->device_transform_observer.callback = _cairo_gstate_update_device_transform;
-    cairo_list_add (&gstate->device_transform_observer.link,
-		    &gstate->target->device_transform_observers);
-
-    gstate->is_identity = other->is_identity;
-    gstate->ctm = other->ctm;
-    gstate->ctm_inverse = other->ctm_inverse;
-    gstate->source_ctm_inverse = other->source_ctm_inverse;
-
-    gstate->source = cairo_pattern_reference (other->source);
-
-    gstate->next = NULL;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-void
-_cairo_gstate_fini (cairo_gstate_t *gstate)
-{
-    _cairo_stroke_style_fini (&gstate->stroke_style);
-
-    cairo_font_face_destroy (gstate->font_face);
-    gstate->font_face = NULL;
-
-    cairo_scaled_font_destroy (gstate->previous_scaled_font);
-    gstate->previous_scaled_font = NULL;
-
-    cairo_scaled_font_destroy (gstate->scaled_font);
-    gstate->scaled_font = NULL;
-
-    _cairo_clip_destroy (gstate->clip);
-
-    cairo_list_del (&gstate->device_transform_observer.link);
-
-    cairo_surface_destroy (gstate->target);
-    gstate->target = NULL;
-
-    cairo_surface_destroy (gstate->parent_target);
-    gstate->parent_target = NULL;
-
-    cairo_surface_destroy (gstate->original_target);
-    gstate->original_target = NULL;
-
-    cairo_pattern_destroy (gstate->source);
-    gstate->source = NULL;
-
-    VG (VALGRIND_MAKE_MEM_UNDEFINED (gstate, sizeof (cairo_gstate_t)));
-}
-
-/**
- * _cairo_gstate_save:
- * @gstate: input/output gstate pointer
- *
- * Makes a copy of the current state of @gstate and saves it
- * to @gstate->next, then put the address of the newly allcated
- * copy into @gstate.  _cairo_gstate_restore() reverses this.
- **/
-cairo_status_t
-_cairo_gstate_save (cairo_gstate_t **gstate, cairo_gstate_t **freelist)
-{
-    cairo_gstate_t *top;
-    cairo_status_t status;
-
-    if (CAIRO_INJECT_FAULT ())
-	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
-    top = *freelist;
-    if (top == NULL) {
-	top = _cairo_malloc (sizeof (cairo_gstate_t));
-	if (unlikely (top == NULL))
-	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-    } else
-	*freelist = top->next;
-
-    status = _cairo_gstate_init_copy (top, *gstate);
-    if (unlikely (status)) {
-	top->next = *freelist;
-	*freelist = top;
-	return status;
-    }
-
-    top->next = *gstate;
-    *gstate = top;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-/**
- * _cairo_gstate_restore:
- * @gstate: input/output gstate pointer
- *
- * Reverses the effects of one _cairo_gstate_save() call.
- **/
-cairo_status_t
-_cairo_gstate_restore (cairo_gstate_t **gstate, cairo_gstate_t **freelist)
-{
-    cairo_gstate_t *top;
-
-    top = *gstate;
-    if (top->next == NULL)
-	return _cairo_error (CAIRO_STATUS_INVALID_RESTORE);
-
-    *gstate = top->next;
-
-    _cairo_gstate_fini (top);
-    VG (VALGRIND_MAKE_MEM_UNDEFINED (&top->next, sizeof (cairo_gstate_t *)));
-    top->next = *freelist;
-    *freelist = top;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-/**
- * _cairo_gstate_redirect_target:
- * @gstate: a #cairo_gstate_t
- * @child: the new child target
- *
- * Redirect @gstate rendering to a "child" target. The original
- * "parent" target with which the gstate was created will not be
- * affected. See _cairo_gstate_get_target().
- **/
-cairo_status_t
-_cairo_gstate_redirect_target (cairo_gstate_t *gstate, cairo_surface_t *child)
-{
-    /* If this gstate is already redirected, this is an error; we need a
-     * new gstate to be able to redirect */
-    assert (gstate->parent_target == NULL);
-
-    /* Set up our new parent_target based on our current target;
-     * gstate->parent_target will take the ref that is held by gstate->target
-     */
-    gstate->parent_target = gstate->target;
-
-    /* Now set up our new target; we overwrite gstate->target directly,
-     * since its ref is now owned by gstate->parent_target */
-    gstate->target = cairo_surface_reference (child);
-    gstate->is_identity &= _cairo_matrix_is_identity (&child->device_transform);
-    cairo_list_move (&gstate->device_transform_observer.link,
-		     &gstate->target->device_transform_observers);
-
-    /* The clip is in surface backend coordinates for the previous target;
-     * translate it into the child's backend coordinates. */
-    _cairo_clip_destroy (gstate->clip);
-    gstate->clip = _cairo_clip_copy_with_translation (gstate->next->clip,
-						      child->device_transform.x0 - gstate->parent_target->device_transform.x0,
-						      child->device_transform.y0 - gstate->parent_target->device_transform.y0);
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-/**
- * _cairo_gstate_is_group:
- * @gstate: a #cairo_gstate_t
- *
- * Check if _cairo_gstate_redirect_target has been called on the head
- * of the stack.
- *
- * Return value: %TRUE if @gstate is redirected to a target different
- * than the previous state in the stack, %FALSE otherwise.
- **/
-cairo_bool_t
-_cairo_gstate_is_group (cairo_gstate_t *gstate)
-{
-    return gstate->parent_target != NULL;
-}
-
-/**
- * _cairo_gstate_get_target:
- * @gstate: a #cairo_gstate_t
- *
- * Return the current drawing target; if drawing is not redirected,
- * this will be the same as _cairo_gstate_get_original_target().
- *
- * Return value: the current target surface
- **/
-cairo_surface_t *
-_cairo_gstate_get_target (cairo_gstate_t *gstate)
-{
-    return gstate->target;
-}
-
-/**
- * _cairo_gstate_get_original_target:
- * @gstate: a #cairo_gstate_t
- *
- * Return the original target with which @gstate was created. This
- * function always returns the original target independent of any
- * child target that may have been set with
- * _cairo_gstate_redirect_target.
- *
- * Return value: the original target surface
- **/
-cairo_surface_t *
-_cairo_gstate_get_original_target (cairo_gstate_t *gstate)
-{
-    return gstate->original_target;
-}
-
-/**
- * _cairo_gstate_get_clip:
- * @gstate: a #cairo_gstate_t
- *
- * This space left intentionally blank.
- *
- * Return value: a pointer to the gstate's #cairo_clip_t structure.
- **/
-cairo_clip_t *
-_cairo_gstate_get_clip (cairo_gstate_t *gstate)
-{
-    return gstate->clip;
-}
-
-cairo_status_t
-_cairo_gstate_set_source (cairo_gstate_t  *gstate,
-			  cairo_pattern_t *source)
-{
-    if (source->status)
-	return source->status;
-
-    source = cairo_pattern_reference (source);
-    cairo_pattern_destroy (gstate->source);
-    gstate->source = source;
-    gstate->source_ctm_inverse = gstate->ctm_inverse;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_pattern_t *
-_cairo_gstate_get_source (cairo_gstate_t *gstate)
-{
-    if (gstate->source == &_cairo_pattern_black.base) {
-	/* do not expose the static object to the user */
-        gstate->source = _cairo_pattern_create_solid (CAIRO_COLOR_BLACK);
-    }
-
-    return gstate->source;
-}
-
-cairo_status_t
-_cairo_gstate_set_operator (cairo_gstate_t *gstate, cairo_operator_t op)
-{
-    gstate->op = op;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_operator_t
-_cairo_gstate_get_operator (cairo_gstate_t *gstate)
-{
-    return gstate->op;
-}
-
-cairo_status_t
-_cairo_gstate_set_opacity (cairo_gstate_t *gstate, double op)
-{
-    gstate->opacity = op;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-double
-_cairo_gstate_get_opacity (cairo_gstate_t *gstate)
-{
-    return gstate->opacity;
-}
-
-cairo_status_t
-_cairo_gstate_set_tolerance (cairo_gstate_t *gstate, double tolerance)
-{
-    gstate->tolerance = tolerance;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-double
-_cairo_gstate_get_tolerance (cairo_gstate_t *gstate)
-{
-    return gstate->tolerance;
-}
-
-cairo_status_t
-_cairo_gstate_set_fill_rule (cairo_gstate_t *gstate, cairo_fill_rule_t fill_rule)
-{
-    gstate->fill_rule = fill_rule;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_fill_rule_t
-_cairo_gstate_get_fill_rule (cairo_gstate_t *gstate)
-{
-    return gstate->fill_rule;
-}
-
-cairo_status_t
-_cairo_gstate_set_line_width (cairo_gstate_t *gstate, double width)
-{
-    gstate->stroke_style.line_width = width;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-double
-_cairo_gstate_get_line_width (cairo_gstate_t *gstate)
-{
-    return gstate->stroke_style.line_width;
-}
-
-cairo_status_t
-_cairo_gstate_set_line_cap (cairo_gstate_t *gstate, cairo_line_cap_t line_cap)
-{
-    gstate->stroke_style.line_cap = line_cap;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_line_cap_t
-_cairo_gstate_get_line_cap (cairo_gstate_t *gstate)
-{
-    return gstate->stroke_style.line_cap;
-}
-
-cairo_status_t
-_cairo_gstate_set_line_join (cairo_gstate_t *gstate, cairo_line_join_t line_join)
-{
-    gstate->stroke_style.line_join = line_join;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_line_join_t
-_cairo_gstate_get_line_join (cairo_gstate_t *gstate)
-{
-    return gstate->stroke_style.line_join;
-}
-
-cairo_status_t
-_cairo_gstate_set_dash (cairo_gstate_t *gstate, const double *dash, int num_dashes, double offset)
-{
-    double dash_total, on_total, off_total;
-    int i, j;
-
-    free (gstate->stroke_style.dash);
-
-    gstate->stroke_style.num_dashes = num_dashes;
-
-    if (gstate->stroke_style.num_dashes == 0) {
-	gstate->stroke_style.dash = NULL;
-	gstate->stroke_style.dash_offset = 0.0;
-	return CAIRO_STATUS_SUCCESS;
-    }
-
-    gstate->stroke_style.dash = _cairo_malloc_ab (gstate->stroke_style.num_dashes, sizeof (double));
-    if (unlikely (gstate->stroke_style.dash == NULL)) {
-	gstate->stroke_style.num_dashes = 0;
-	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-    }
-
-    on_total = off_total = dash_total = 0.0;
-    for (i = j = 0; i < num_dashes; i++) {
-	if (dash[i] < 0)
-	    return _cairo_error (CAIRO_STATUS_INVALID_DASH);
-
-	if (dash[i] == 0 && i > 0 && i < num_dashes - 1) {
-	    if (dash[++i] < 0)
-		return _cairo_error (CAIRO_STATUS_INVALID_DASH);
-
-	    gstate->stroke_style.dash[j-1] += dash[i];
-	    gstate->stroke_style.num_dashes -= 2;
-	} else
-	    gstate->stroke_style.dash[j++] = dash[i];
-
-	if (dash[i]) {
-	    dash_total += dash[i];
-	    if ((i & 1) == 0)
-		on_total += dash[i];
-	    else
-		off_total += dash[i];
-	}
-    }
-
-    if (dash_total == 0.0)
-	return _cairo_error (CAIRO_STATUS_INVALID_DASH);
-
-    /* An odd dash value indicate symmetric repeating, so the total
-     * is twice as long. */
-    if (gstate->stroke_style.num_dashes & 1) {
-	dash_total *= 2;
-	on_total += off_total;
-    }
-
-    if (dash_total - on_total < CAIRO_FIXED_ERROR_DOUBLE) {
-	/* Degenerate dash -> solid line */
-	free (gstate->stroke_style.dash);
-	gstate->stroke_style.dash = NULL;
-	gstate->stroke_style.num_dashes = 0;
-	gstate->stroke_style.dash_offset = 0.0;
-	return CAIRO_STATUS_SUCCESS;
-    }
-
-    /* The dashing code doesn't like a negative offset or a big positive
-     * offset, so we compute an equivalent offset which is guaranteed to be
-     * positive and less than twice the pattern length. */
-    offset = fmod (offset, dash_total);
-    if (offset < 0.0)
-	offset += dash_total;
-    if (offset <= 0.0)		/* Take care of -0 */
-	offset = 0.0;
-    gstate->stroke_style.dash_offset = offset;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-void
-_cairo_gstate_get_dash (cairo_gstate_t *gstate,
-			double         *dashes,
-			int            *num_dashes,
-			double         *offset)
-{
-    if (dashes) {
-	memcpy (dashes,
-		gstate->stroke_style.dash,
-		sizeof (double) * gstate->stroke_style.num_dashes);
-    }
-
-    if (num_dashes)
-	*num_dashes = gstate->stroke_style.num_dashes;
-
-    if (offset)
-	*offset = gstate->stroke_style.dash_offset;
-}
-
-cairo_status_t
-_cairo_gstate_set_miter_limit (cairo_gstate_t *gstate, double limit)
-{
-    gstate->stroke_style.miter_limit = limit;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-double
-_cairo_gstate_get_miter_limit (cairo_gstate_t *gstate)
-{
-    return gstate->stroke_style.miter_limit;
-}
-
-void
-_cairo_gstate_get_matrix (cairo_gstate_t *gstate, cairo_matrix_t *matrix)
-{
-    *matrix = gstate->ctm;
-}
-
-cairo_status_t
-_cairo_gstate_translate (cairo_gstate_t *gstate, double tx, double ty)
-{
-    cairo_matrix_t tmp;
-
-    if (! ISFINITE (tx) || ! ISFINITE (ty))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    cairo_matrix_init_translate (&tmp, tx, ty);
-    cairo_matrix_multiply (&gstate->ctm, &tmp, &gstate->ctm);
-    gstate->is_identity = FALSE;
-
-    /* paranoid check against gradual numerical instability */
-    if (! _cairo_matrix_is_invertible (&gstate->ctm))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    cairo_matrix_init_translate (&tmp, -tx, -ty);
-    cairo_matrix_multiply (&gstate->ctm_inverse, &gstate->ctm_inverse, &tmp);
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_scale (cairo_gstate_t *gstate, double sx, double sy)
-{
-    cairo_matrix_t tmp;
-
-    if (sx * sy == 0.) /* either sx or sy is 0, or det == 0 due to underflow */
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-    if (! ISFINITE (sx) || ! ISFINITE (sy))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    cairo_matrix_init_scale (&tmp, sx, sy);
-    cairo_matrix_multiply (&gstate->ctm, &tmp, &gstate->ctm);
-    gstate->is_identity = FALSE;
-
-    /* paranoid check against gradual numerical instability */
-    if (! _cairo_matrix_is_invertible (&gstate->ctm))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    cairo_matrix_init_scale (&tmp, 1/sx, 1/sy);
-    cairo_matrix_multiply (&gstate->ctm_inverse, &gstate->ctm_inverse, &tmp);
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_rotate (cairo_gstate_t *gstate, double angle)
-{
-    cairo_matrix_t tmp;
-
-    if (angle == 0.)
-	return CAIRO_STATUS_SUCCESS;
-
-    if (! ISFINITE (angle))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    cairo_matrix_init_rotate (&tmp, angle);
-    cairo_matrix_multiply (&gstate->ctm, &tmp, &gstate->ctm);
-    gstate->is_identity = FALSE;
-
-    /* paranoid check against gradual numerical instability */
-    if (! _cairo_matrix_is_invertible (&gstate->ctm))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    cairo_matrix_init_rotate (&tmp, -angle);
-    cairo_matrix_multiply (&gstate->ctm_inverse, &gstate->ctm_inverse, &tmp);
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_transform (cairo_gstate_t	      *gstate,
-			 const cairo_matrix_t *matrix)
-{
-    cairo_matrix_t tmp;
-    cairo_status_t status;
-
-    if (! _cairo_matrix_is_invertible (matrix))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    if (_cairo_matrix_is_identity (matrix))
-	return CAIRO_STATUS_SUCCESS;
-
-    tmp = *matrix;
-    status = cairo_matrix_invert (&tmp);
-    if (unlikely (status))
-	return status;
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    cairo_matrix_multiply (&gstate->ctm, matrix, &gstate->ctm);
-    cairo_matrix_multiply (&gstate->ctm_inverse, &gstate->ctm_inverse, &tmp);
-    gstate->is_identity = FALSE;
-
-    /* paranoid check against gradual numerical instability */
-    if (! _cairo_matrix_is_invertible (&gstate->ctm))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_set_matrix (cairo_gstate_t       *gstate,
-			  const cairo_matrix_t *matrix)
-{
-    cairo_status_t status;
-
-    if (memcmp (matrix, &gstate->ctm, sizeof (cairo_matrix_t)) == 0)
-	return CAIRO_STATUS_SUCCESS;
-
-    if (! _cairo_matrix_is_invertible (matrix))
-	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
-
-    if (_cairo_matrix_is_identity (matrix)) {
-	_cairo_gstate_identity_matrix (gstate);
-	return CAIRO_STATUS_SUCCESS;
-    }
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    gstate->ctm = *matrix;
-    gstate->ctm_inverse = *matrix;
-    status = cairo_matrix_invert (&gstate->ctm_inverse);
-    assert (status == CAIRO_STATUS_SUCCESS);
-    gstate->is_identity = FALSE;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-void
-_cairo_gstate_identity_matrix (cairo_gstate_t *gstate)
-{
-    if (_cairo_matrix_is_identity (&gstate->ctm))
-	return;
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    cairo_matrix_init_identity (&gstate->ctm);
-    cairo_matrix_init_identity (&gstate->ctm_inverse);
-    gstate->is_identity = _cairo_matrix_is_identity (&gstate->target->device_transform);
-}
-
-void
-_cairo_gstate_user_to_device (cairo_gstate_t *gstate, double *x, double *y)
-{
-    cairo_matrix_transform_point (&gstate->ctm, x, y);
-}
-
-void
-_cairo_gstate_user_to_device_distance (cairo_gstate_t *gstate,
-				       double *dx, double *dy)
-{
-    cairo_matrix_transform_distance (&gstate->ctm, dx, dy);
-}
-
-void
-_cairo_gstate_device_to_user (cairo_gstate_t *gstate, double *x, double *y)
-{
-    cairo_matrix_transform_point (&gstate->ctm_inverse, x, y);
-}
-
-void
-_cairo_gstate_device_to_user_distance (cairo_gstate_t *gstate,
-				       double *dx, double *dy)
-{
-    cairo_matrix_transform_distance (&gstate->ctm_inverse, dx, dy);
-}
-
-void
-_do_cairo_gstate_user_to_backend (cairo_gstate_t *gstate, double *x, double *y)
-{
-    cairo_matrix_transform_point (&gstate->ctm, x, y);
-    cairo_matrix_transform_point (&gstate->target->device_transform, x, y);
-}
-
-void
-_do_cairo_gstate_user_to_backend_distance (cairo_gstate_t *gstate, double *x, double *y)
-{
-    cairo_matrix_transform_distance (&gstate->ctm, x, y);
-    cairo_matrix_transform_distance (&gstate->target->device_transform, x, y);
-}
-
-void
-_do_cairo_gstate_backend_to_user (cairo_gstate_t *gstate, double *x, double *y)
-{
-    cairo_matrix_transform_point (&gstate->target->device_transform_inverse, x, y);
-    cairo_matrix_transform_point (&gstate->ctm_inverse, x, y);
-}
-
-void
-_do_cairo_gstate_backend_to_user_distance (cairo_gstate_t *gstate, double *x, double *y)
-{
-    cairo_matrix_transform_distance (&gstate->target->device_transform_inverse, x, y);
-    cairo_matrix_transform_distance (&gstate->ctm_inverse, x, y);
-}
-
-void
-_cairo_gstate_backend_to_user_rectangle (cairo_gstate_t *gstate,
-                                         double *x1, double *y1,
-                                         double *x2, double *y2,
-                                         cairo_bool_t *is_tight)
-{
-    cairo_matrix_t matrix_inverse;
-
-    if (! _cairo_matrix_is_identity (&gstate->target->device_transform_inverse) ||
-    ! _cairo_matrix_is_identity (&gstate->ctm_inverse))
-    {
-	cairo_matrix_multiply (&matrix_inverse,
-			       &gstate->target->device_transform_inverse,
-			       &gstate->ctm_inverse);
-	_cairo_matrix_transform_bounding_box (&matrix_inverse,
-					      x1, y1, x2, y2, is_tight);
-    }
-
-    else
-    {
-	if (is_tight)
-	    *is_tight = TRUE;
-    }
-}
-
-/* XXX: NYI
-cairo_status_t
-_cairo_gstate_stroke_to_path (cairo_gstate_t *gstate)
-{
-    cairo_status_t status;
-
-    _cairo_pen_init (&gstate);
-    return CAIRO_STATUS_SUCCESS;
-}
-*/
-
-void
-_cairo_gstate_path_extents (cairo_gstate_t     *gstate,
-			    cairo_path_fixed_t *path,
-			    double *x1, double *y1,
-			    double *x2, double *y2)
-{
-    cairo_box_t box;
-    double px1, py1, px2, py2;
-
-    if (_cairo_path_fixed_extents (path, &box)) {
-	px1 = _cairo_fixed_to_double (box.p1.x);
-	py1 = _cairo_fixed_to_double (box.p1.y);
-	px2 = _cairo_fixed_to_double (box.p2.x);
-	py2 = _cairo_fixed_to_double (box.p2.y);
-
-	_cairo_gstate_backend_to_user_rectangle (gstate,
-						 &px1, &py1, &px2, &py2,
-						 NULL);
-    } else {
-	px1 = 0.0;
-	py1 = 0.0;
-	px2 = 0.0;
-	py2 = 0.0;
-    }
-
-    if (x1)
-	*x1 = px1;
-    if (y1)
-	*y1 = py1;
-    if (x2)
-	*x2 = px2;
-    if (y2)
-	*y2 = py2;
-}
-
-static void
-_cairo_gstate_copy_pattern (cairo_pattern_t *pattern,
-			    const cairo_pattern_t *original)
-{
-    /* First check if the we can replace the original with a much simpler
-     * pattern. For example, gradients that are uniform or just have a single
-     * stop can sometimes be replaced with a solid.
-     */
-
-    if (_cairo_pattern_is_clear (original)) {
-        _cairo_pattern_init_solid ((cairo_solid_pattern_t *) pattern,
-				   CAIRO_COLOR_TRANSPARENT);
-	return;
-    }
-
-    if (original->type == CAIRO_PATTERN_TYPE_LINEAR ||
-	original->type == CAIRO_PATTERN_TYPE_RADIAL)
-    {
-        cairo_color_t color;
-	if (_cairo_gradient_pattern_is_solid ((cairo_gradient_pattern_t *) original,
-					      NULL,
-					      &color))
-	{
-	    _cairo_pattern_init_solid ((cairo_solid_pattern_t *) pattern,
-				       &color);
-	    return;
-	}
-    }
-
-    _cairo_pattern_init_static_copy (pattern, original);
-}
-
-static void
-_cairo_gstate_copy_transformed_pattern (cairo_gstate_t  *gstate,
-					cairo_pattern_t *pattern,
-					const cairo_pattern_t *original,
-					const cairo_matrix_t  *ctm_inverse)
-{
-    _cairo_gstate_copy_pattern (pattern, original);
-
-    /* apply device_transform first so that it is transformed by ctm_inverse */
-    if (original->type == CAIRO_PATTERN_TYPE_SURFACE) {
-	cairo_surface_pattern_t *surface_pattern;
-	cairo_surface_t *surface;
-
-        surface_pattern = (cairo_surface_pattern_t *) original;
-        surface = surface_pattern->surface;
-
-	if (_cairo_surface_has_device_transform (surface))
-	    _cairo_pattern_pretransform (pattern, &surface->device_transform);
-    }
-
-    if (! _cairo_matrix_is_identity (ctm_inverse))
-	_cairo_pattern_transform (pattern, ctm_inverse);
-
-    if (_cairo_surface_has_device_transform (gstate->target)) {
-        _cairo_pattern_transform (pattern,
-                                  &gstate->target->device_transform_inverse);
-    }
-}
-
-static void
-_cairo_gstate_copy_transformed_source (cairo_gstate_t   *gstate,
-				       cairo_pattern_t  *pattern)
-{
-    _cairo_gstate_copy_transformed_pattern (gstate, pattern,
-					    gstate->source,
-					    &gstate->source_ctm_inverse);
-}
-
-static void
-_cairo_gstate_copy_transformed_mask (cairo_gstate_t   *gstate,
-				     cairo_pattern_t  *pattern,
-				     cairo_pattern_t  *mask)
-{
-    _cairo_gstate_copy_transformed_pattern (gstate, pattern,
-					    mask,
-					    &gstate->ctm_inverse);
-}
-
-static cairo_operator_t
-_reduce_op (cairo_gstate_t *gstate)
-{
-    cairo_operator_t op;
-    const cairo_pattern_t *pattern;
-
-    op = gstate->op;
-    if (op != CAIRO_OPERATOR_SOURCE)
-	return op;
-
-    pattern = gstate->source;
-    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
-	const cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) pattern;
-	if (solid->color.alpha_short <= 0x00ff) {
-	    op = CAIRO_OPERATOR_CLEAR;
-	} else if ((gstate->target->content & CAIRO_CONTENT_ALPHA) == 0) {
-	    if ((solid->color.red_short |
-		 solid->color.green_short |
-		 solid->color.blue_short) <= 0x00ff)
-	    {
-		op = CAIRO_OPERATOR_CLEAR;
-	    }
-	}
-    } else if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
-	const cairo_surface_pattern_t *surface = (cairo_surface_pattern_t *) pattern;
-	if (surface->surface->is_clear &&
-	    surface->surface->content & CAIRO_CONTENT_ALPHA)
-	{
-	    op = CAIRO_OPERATOR_CLEAR;
-	}
-    } else {
-	const cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t *) pattern;
-	if (gradient->n_stops == 0)
-	    op = CAIRO_OPERATOR_CLEAR;
-    }
-
-    return op;
-}
-
-static cairo_status_t
-_cairo_gstate_get_pattern_status (const cairo_pattern_t *pattern)
-{
-    if (unlikely (pattern->type == CAIRO_PATTERN_TYPE_MESH &&
-		  ((const cairo_mesh_pattern_t *) pattern)->current_patch))
-    {
-	/* If current patch != NULL, the pattern is under construction
-	 * and cannot be used as a source */
-	return CAIRO_STATUS_INVALID_MESH_CONSTRUCTION;
-    }
-
-    return pattern->status;
-}
-
-cairo_status_t
-_cairo_gstate_paint (cairo_gstate_t *gstate)
-{
-    cairo_pattern_union_t source_pattern;
-    const cairo_pattern_t *pattern;
-    cairo_status_t status;
-    cairo_operator_t op;
-
-    status = _cairo_gstate_get_pattern_status (gstate->source);
-    if (unlikely (status))
-	return status;
-
-    if (gstate->op == CAIRO_OPERATOR_DEST)
-	return CAIRO_STATUS_SUCCESS;
-
-    if (_cairo_clip_is_all_clipped (gstate->clip))
-	return CAIRO_STATUS_SUCCESS;
-
-    op = _reduce_op (gstate);
-    if (op == CAIRO_OPERATOR_CLEAR) {
-	pattern = &_cairo_pattern_clear.base;
-    } else {
-	_cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
-	pattern = &source_pattern.base;
-    }
-
-    return _cairo_surface_paint (gstate->target,
-				 op, pattern,
-				 gstate->clip);
-}
-
-cairo_status_t
-_cairo_gstate_mask (cairo_gstate_t  *gstate,
-		    cairo_pattern_t *mask)
-{
-    cairo_pattern_union_t source_pattern, mask_pattern;
-    const cairo_pattern_t *source;
-    cairo_operator_t op;
-    cairo_status_t status;
-
-    status = _cairo_gstate_get_pattern_status (mask);
-    if (unlikely (status))
-	return status;
-
-    status = _cairo_gstate_get_pattern_status (gstate->source);
-    if (unlikely (status))
-	return status;
-
-    if (gstate->op == CAIRO_OPERATOR_DEST)
-	return CAIRO_STATUS_SUCCESS;
-
-    if (_cairo_clip_is_all_clipped (gstate->clip))
-	return CAIRO_STATUS_SUCCESS;
-
-    assert (gstate->opacity == 1.0);
-
-    if (_cairo_pattern_is_opaque (mask, NULL))
-	return _cairo_gstate_paint (gstate);
-
-    if (_cairo_pattern_is_clear (mask) &&
-	_cairo_operator_bounded_by_mask (gstate->op))
-    {
-	return CAIRO_STATUS_SUCCESS;
-    }
-
-    op = _reduce_op (gstate);
-    if (op == CAIRO_OPERATOR_CLEAR) {
-	source = &_cairo_pattern_clear.base;
-    } else {
-	_cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
-	source = &source_pattern.base;
-    }
-    _cairo_gstate_copy_transformed_mask (gstate, &mask_pattern.base, mask);
-
-    if (source->type == CAIRO_PATTERN_TYPE_SOLID &&
-	mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID &&
-	_cairo_operator_bounded_by_source (op))
-    {
-	const cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) source;
-	cairo_color_t combined;
-
-	if (mask_pattern.base.has_component_alpha) {
-#define M(R, A, B, c) R.c = A.c * B.c
-	    M(combined, solid->color, mask_pattern.solid.color, red);
-	    M(combined, solid->color, mask_pattern.solid.color, green);
-	    M(combined, solid->color, mask_pattern.solid.color, blue);
-	    M(combined, solid->color, mask_pattern.solid.color, alpha);
-#undef M
-	} else {
-	    combined = solid->color;
-	    _cairo_color_multiply_alpha (&combined, mask_pattern.solid.color.alpha);
-	}
-
-	_cairo_pattern_init_solid (&source_pattern.solid, &combined);
-
-	status = _cairo_surface_paint (gstate->target, op,
-				       &source_pattern.base,
-				       gstate->clip);
-    }
-    else
-    {
-	status = _cairo_surface_mask (gstate->target, op,
-				      source,
-				      &mask_pattern.base,
-				      gstate->clip);
-    }
-
-    return status;
-}
-
-cairo_status_t
-_cairo_gstate_stroke (cairo_gstate_t *gstate, cairo_path_fixed_t *path)
-{
-    cairo_pattern_union_t source_pattern;
-    cairo_stroke_style_t style;
-    double dash[2];
-    cairo_status_t status;
-    cairo_matrix_t aggregate_transform;
-    cairo_matrix_t aggregate_transform_inverse;
-
-    status = _cairo_gstate_get_pattern_status (gstate->source);
-    if (unlikely (status))
-	return status;
-
-    if (gstate->op == CAIRO_OPERATOR_DEST)
-	return CAIRO_STATUS_SUCCESS;
-
-    if (gstate->stroke_style.line_width <= 0.0)
-	return CAIRO_STATUS_SUCCESS;
-
-    if (_cairo_clip_is_all_clipped (gstate->clip))
-	return CAIRO_STATUS_SUCCESS;
-
-    assert (gstate->opacity == 1.0);
-
-    cairo_matrix_multiply (&aggregate_transform,
-                           &gstate->ctm,
-                           &gstate->target->device_transform);
-    cairo_matrix_multiply (&aggregate_transform_inverse,
-                           &gstate->target->device_transform_inverse,
-                           &gstate->ctm_inverse);
-
-    memcpy (&style, &gstate->stroke_style, sizeof (gstate->stroke_style));
-    if (_cairo_stroke_style_dash_can_approximate (&gstate->stroke_style, &aggregate_transform, gstate->tolerance)) {
-        style.dash = dash;
-        _cairo_stroke_style_dash_approximate (&gstate->stroke_style, &gstate->ctm, gstate->tolerance,
-					      &style.dash_offset,
-					      style.dash,
-					      &style.num_dashes);
-    }
-
-    _cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
-
-    return _cairo_surface_stroke (gstate->target,
-				  gstate->op,
-				  &source_pattern.base,
-				  path,
-				  &style,
-				  &aggregate_transform,
-				  &aggregate_transform_inverse,
-				  gstate->tolerance,
-				  gstate->antialias,
-				  gstate->clip);
-}
-
-cairo_status_t
-_cairo_gstate_in_stroke (cairo_gstate_t	    *gstate,
-			 cairo_path_fixed_t *path,
-			 double		     x,
-			 double		     y,
-			 cairo_bool_t	    *inside_ret)
-{
-    cairo_status_t status;
-    cairo_rectangle_int_t extents;
-    cairo_box_t limit;
-    cairo_traps_t traps;
-
-    if (gstate->stroke_style.line_width <= 0.0) {
-	*inside_ret = FALSE;
-	return CAIRO_STATUS_SUCCESS;
-    }
-
-    _cairo_gstate_user_to_backend (gstate, &x, &y);
-
-    /* Before we perform the expensive stroke analysis,
-     * check whether the point is within the extents of the path.
-     */
-    _cairo_path_fixed_approximate_stroke_extents (path,
-						  &gstate->stroke_style,
-						  &gstate->ctm,
-						  gstate->target->is_vector,
-						  &extents);
-    if (x < extents.x || x > extents.x + extents.width ||
-	y < extents.y || y > extents.y + extents.height)
-    {
-	*inside_ret = FALSE;
-	return CAIRO_STATUS_SUCCESS;
-    }
-
-    limit.p1.x = _cairo_fixed_from_double (x) - 1;
-    limit.p1.y = _cairo_fixed_from_double (y) - 1;
-    limit.p2.x = limit.p1.x + 2;
-    limit.p2.y = limit.p1.y + 2;
-
-    _cairo_traps_init (&traps);
-    _cairo_traps_limit (&traps, &limit, 1);
-
-    status = _cairo_path_fixed_stroke_polygon_to_traps (path,
-							&gstate->stroke_style,
-							&gstate->ctm,
-							&gstate->ctm_inverse,
-							gstate->tolerance,
-							&traps);
-    if (unlikely (status))
-	goto BAIL;
-
-    *inside_ret = _cairo_traps_contain (&traps, x, y);
-
-BAIL:
-    _cairo_traps_fini (&traps);
-
-    return status;
-}
-
-cairo_status_t
-_cairo_gstate_fill (cairo_gstate_t *gstate, cairo_path_fixed_t *path)
-{
-    cairo_status_t status;
-
-    status = _cairo_gstate_get_pattern_status (gstate->source);
-    if (unlikely (status))
-	return status;
-
-    if (gstate->op == CAIRO_OPERATOR_DEST)
-	return CAIRO_STATUS_SUCCESS;
-
-    if (_cairo_clip_is_all_clipped (gstate->clip))
-	return CAIRO_STATUS_SUCCESS;
-
-    assert (gstate->opacity == 1.0);
-
-    if (_cairo_path_fixed_fill_is_empty (path)) {
-	if (_cairo_operator_bounded_by_mask (gstate->op))
-	    return CAIRO_STATUS_SUCCESS;
-
-	status = _cairo_surface_paint (gstate->target,
-				       CAIRO_OPERATOR_CLEAR,
-				       &_cairo_pattern_clear.base,
-				       gstate->clip);
-    } else {
-	cairo_pattern_union_t source_pattern;
-	const cairo_pattern_t *pattern;
-	cairo_operator_t op;
-	cairo_rectangle_int_t extents;
-	cairo_box_t box;
-
-	op = _reduce_op (gstate);
-	if (op == CAIRO_OPERATOR_CLEAR) {
-	    pattern = &_cairo_pattern_clear.base;
-	} else {
-	    _cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
-	    pattern = &source_pattern.base;
-	}
-
-	/* Toolkits often paint the entire background with a fill */
-	if (_cairo_surface_get_extents (gstate->target, &extents) &&
-	    _cairo_path_fixed_is_box (path, &box) &&
-	    box.p1.x <= _cairo_fixed_from_int (extents.x) &&
-	    box.p1.y <= _cairo_fixed_from_int (extents.y) &&
-	    box.p2.x >= _cairo_fixed_from_int (extents.x + extents.width) &&
-	    box.p2.y >= _cairo_fixed_from_int (extents.y + extents.height))
-	{
-	    status = _cairo_surface_paint (gstate->target, op, pattern,
-					   gstate->clip);
-	}
-	else
-	{
-	    status = _cairo_surface_fill (gstate->target, op, pattern,
-					  path,
-					  gstate->fill_rule,
-					  gstate->tolerance,
-					  gstate->antialias,
-					  gstate->clip);
-	}
-    }
-
-    return status;
-}
-
-cairo_bool_t
-_cairo_gstate_in_fill (cairo_gstate_t	  *gstate,
-		       cairo_path_fixed_t *path,
-		       double		   x,
-		       double		   y)
-{
-    _cairo_gstate_user_to_backend (gstate, &x, &y);
-
-    return _cairo_path_fixed_in_fill (path,
-				      gstate->fill_rule,
-				      gstate->tolerance,
-				      x, y);
-}
-
-cairo_bool_t
-_cairo_gstate_in_clip (cairo_gstate_t	  *gstate,
-		       double		   x,
-		       double		   y)
-{
-    cairo_clip_t *clip = gstate->clip;
-    int i;
-
-    if (_cairo_clip_is_all_clipped (clip))
-	return FALSE;
-
-    if (clip == NULL)
-	return TRUE;
-
-    _cairo_gstate_user_to_backend (gstate, &x, &y);
-
-    if (x <  clip->extents.x ||
-	x >= clip->extents.x + clip->extents.width ||
-	y <  clip->extents.y ||
-	y >= clip->extents.y + clip->extents.height)
-    {
-	return FALSE;
-    }
-
-    if (clip->num_boxes) {
-	int fx, fy;
-
-	fx = _cairo_fixed_from_double (x);
-	fy = _cairo_fixed_from_double (y);
-	for (i = 0; i < clip->num_boxes; i++) {
-	    if (fx >= clip->boxes[i].p1.x && fx <= clip->boxes[i].p2.x &&
-		fy >= clip->boxes[i].p1.y && fy <= clip->boxes[i].p2.y)
-		break;
-	}
-	if (i == clip->num_boxes)
-	    return FALSE;
-    }
-
-    if (clip->path) {
-	cairo_clip_path_t *clip_path = clip->path;
-	do {
-	    if (! _cairo_path_fixed_in_fill (&clip_path->path,
-					     clip_path->fill_rule,
-					     clip_path->tolerance,
-					     x, y))
-		return FALSE;
-	} while ((clip_path = clip_path->prev) != NULL);
-    }
-
-    return TRUE;
-}
-
-cairo_status_t
-_cairo_gstate_copy_page (cairo_gstate_t *gstate)
-{
-    cairo_surface_copy_page (gstate->target);
-    return cairo_surface_status (gstate->target);
-}
-
-cairo_status_t
-_cairo_gstate_show_page (cairo_gstate_t *gstate)
-{
-    cairo_surface_show_page (gstate->target);
-    return cairo_surface_status (gstate->target);
-}
-
-static void
-_cairo_gstate_extents_to_user_rectangle (cairo_gstate_t	  *gstate,
-					 const cairo_box_t *extents,
-					 double *x1, double *y1,
-					 double *x2, double *y2)
-{
-    double px1, py1, px2, py2;
-
-    px1 = _cairo_fixed_to_double (extents->p1.x);
-    py1 = _cairo_fixed_to_double (extents->p1.y);
-    px2 = _cairo_fixed_to_double (extents->p2.x);
-    py2 = _cairo_fixed_to_double (extents->p2.y);
-
-    _cairo_gstate_backend_to_user_rectangle (gstate,
-					     &px1, &py1, &px2, &py2,
-					     NULL);
-    if (x1)
-	*x1 = px1;
-    if (y1)
-	*y1 = py1;
-    if (x2)
-	*x2 = px2;
-    if (y2)
-	*y2 = py2;
-}
-
-cairo_status_t
-_cairo_gstate_stroke_extents (cairo_gstate_t	 *gstate,
-			      cairo_path_fixed_t *path,
-                              double *x1, double *y1,
-			      double *x2, double *y2)
-{
-    cairo_int_status_t status;
-    cairo_box_t extents;
-    cairo_bool_t empty;
-
-    if (x1)
-	*x1 = 0.0;
-    if (y1)
-	*y1 = 0.0;
-    if (x2)
-	*x2 = 0.0;
-    if (y2)
-	*y2 = 0.0;
-
-    if (gstate->stroke_style.line_width <= 0.0)
-	return CAIRO_STATUS_SUCCESS;
-
-    status = CAIRO_INT_STATUS_UNSUPPORTED;
-    if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
-	cairo_boxes_t boxes;
-
-	_cairo_boxes_init (&boxes);
-	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
-								&gstate->stroke_style,
-								&gstate->ctm,
-								gstate->antialias,
-								&boxes);
-	empty = boxes.num_boxes == 0;
-	if (! empty)
-	    _cairo_boxes_extents (&boxes, &extents);
-	_cairo_boxes_fini (&boxes);
-    }
-
-    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
-	cairo_polygon_t polygon;
-
-	_cairo_polygon_init (&polygon, NULL, 0);
-	status = _cairo_path_fixed_stroke_to_polygon (path,
-						      &gstate->stroke_style,
-						      &gstate->ctm,
-						      &gstate->ctm_inverse,
-						      gstate->tolerance,
-						      &polygon);
-	empty = polygon.num_edges == 0;
-	if (! empty)
-	    extents = polygon.extents;
-	_cairo_polygon_fini (&polygon);
-    }
-    if (! empty) {
-	_cairo_gstate_extents_to_user_rectangle (gstate, &extents,
-						 x1, y1, x2, y2);
-    }
-
-    return status;
-}
-
-cairo_status_t
-_cairo_gstate_fill_extents (cairo_gstate_t     *gstate,
-			    cairo_path_fixed_t *path,
-                            double *x1, double *y1,
-			    double *x2, double *y2)
-{
-    cairo_status_t status;
-    cairo_box_t extents;
-    cairo_bool_t empty;
-
-    if (x1)
-	*x1 = 0.0;
-    if (y1)
-	*y1 = 0.0;
-    if (x2)
-	*x2 = 0.0;
-    if (y2)
-	*y2 = 0.0;
-
-    if (_cairo_path_fixed_fill_is_empty (path))
-	return CAIRO_STATUS_SUCCESS;
-
-    if (_cairo_path_fixed_fill_is_rectilinear (path)) {
-	cairo_boxes_t boxes;
-
-	_cairo_boxes_init (&boxes);
-	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
-							      gstate->fill_rule,
-							      gstate->antialias,
-							      &boxes);
-	empty = boxes.num_boxes == 0;
-	if (! empty)
-	    _cairo_boxes_extents (&boxes, &extents);
-
-	_cairo_boxes_fini (&boxes);
-    } else {
-	cairo_traps_t traps;
-
-	_cairo_traps_init (&traps);
-
-	status = _cairo_path_fixed_fill_to_traps (path,
-						  gstate->fill_rule,
-						  gstate->tolerance,
-						  &traps);
-	empty = traps.num_traps == 0;
-	if (! empty)
-	    _cairo_traps_extents (&traps, &extents);
-
-	_cairo_traps_fini (&traps);
-    }
-
-    if (! empty) {
-	_cairo_gstate_extents_to_user_rectangle (gstate, &extents,
-						 x1, y1, x2, y2);
-    }
-
-    return status;
-}
-
-cairo_status_t
-_cairo_gstate_reset_clip (cairo_gstate_t *gstate)
-{
-    _cairo_clip_destroy (gstate->clip);
-    gstate->clip = NULL;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_clip (cairo_gstate_t *gstate, cairo_path_fixed_t *path)
-{
-    gstate->clip =
-	_cairo_clip_intersect_path (gstate->clip,
-				    path,
-				    gstate->fill_rule,
-				    gstate->tolerance,
-				    gstate->antialias);
-    /* XXX */
-    return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_bool_t
-_cairo_gstate_int_clip_extents (cairo_gstate_t        *gstate,
-				cairo_rectangle_int_t *extents)
-{
-    cairo_bool_t is_bounded;
-
-    is_bounded = _cairo_surface_get_extents (gstate->target, extents);
-
-    if (gstate->clip) {
-	_cairo_rectangle_intersect (extents,
-				    _cairo_clip_get_extents (gstate->clip));
-	is_bounded = TRUE;
-    }
-
-    return is_bounded;
-}
-
-cairo_bool_t
-_cairo_gstate_clip_extents (cairo_gstate_t *gstate,
-		            double         *x1,
-		            double         *y1,
-			    double         *x2,
-			    double         *y2)
-{
-    cairo_rectangle_int_t extents;
-    double px1, py1, px2, py2;
-
-    if (! _cairo_gstate_int_clip_extents (gstate, &extents))
-	return FALSE;
-
-    px1 = extents.x;
-    py1 = extents.y;
-    px2 = extents.x + (int) extents.width;
-    py2 = extents.y + (int) extents.height;
-
-    _cairo_gstate_backend_to_user_rectangle (gstate,
-					     &px1, &py1, &px2, &py2,
-					     NULL);
-
-    if (x1)
-	*x1 = px1;
-    if (y1)
-	*y1 = py1;
-    if (x2)
-	*x2 = px2;
-    if (y2)
-	*y2 = py2;
-
-    return TRUE;
-}
-
-cairo_rectangle_list_t*
-_cairo_gstate_copy_clip_rectangle_list (cairo_gstate_t *gstate)
-{
-    cairo_rectangle_int_t extents;
-    cairo_rectangle_list_t *list;
-    cairo_clip_t *clip;
-
-    if (_cairo_surface_get_extents (gstate->target, &extents))
-	clip = _cairo_clip_copy_intersect_rectangle (gstate->clip, &extents);
-    else
-	clip = gstate->clip;
-
-    list = _cairo_clip_copy_rectangle_list (clip, gstate);
-
-    if (clip != gstate->clip)
-	_cairo_clip_destroy (clip);
-
-    return list;
-}
-
-cairo_status_t
-_cairo_gstate_tag_begin (cairo_gstate_t *gstate,
-			 const char *tag_name, const char *attributes)
-{
-    cairo_pattern_union_t source_pattern;
-    cairo_stroke_style_t style;
-    double dash[2];
-    cairo_status_t status;
-    cairo_matrix_t aggregate_transform;
-    cairo_matrix_t aggregate_transform_inverse;
-
-    status = _cairo_gstate_get_pattern_status (gstate->source);
-    if (unlikely (status))
-	return status;
-
-    cairo_matrix_multiply (&aggregate_transform,
-                           &gstate->ctm,
-                           &gstate->target->device_transform);
-    cairo_matrix_multiply (&aggregate_transform_inverse,
-                           &gstate->target->device_transform_inverse,
-                           &gstate->ctm_inverse);
-
-    memcpy (&style, &gstate->stroke_style, sizeof (gstate->stroke_style));
-    if (_cairo_stroke_style_dash_can_approximate (&gstate->stroke_style, &aggregate_transform, gstate->tolerance)) {
-        style.dash = dash;
-        _cairo_stroke_style_dash_approximate (&gstate->stroke_style, &gstate->ctm, gstate->tolerance,
-					      &style.dash_offset,
-					      style.dash,
-					      &style.num_dashes);
-    }
-
-    _cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
-
-    return _cairo_surface_tag (gstate->target,
-			       TRUE, /* begin */
-			       tag_name,
-			       attributes ? attributes : "",
-			       &source_pattern.base,
-			       &style,
-			       &aggregate_transform,
-			       &aggregate_transform_inverse,
-			       gstate->clip);
-}
-
-cairo_status_t
-_cairo_gstate_tag_end (cairo_gstate_t *gstate,
-		       const char *tag_name)
-{
-    return _cairo_surface_tag (gstate->target,
-			       FALSE, /* begin */
-			       tag_name,
-			       NULL, /* attributes */
-			       NULL, /* source */
-			       NULL, /* stroke_style */
-			       NULL, /* ctm */
-			       NULL, /* ctm_inverse*/
-			       NULL); /* clip */
-}
-
-static void
-_cairo_gstate_unset_scaled_font (cairo_gstate_t *gstate)
-{
-    if (gstate->scaled_font == NULL)
-	return;
-
-    if (gstate->previous_scaled_font != NULL)
-	cairo_scaled_font_destroy (gstate->previous_scaled_font);
-
-    gstate->previous_scaled_font = gstate->scaled_font;
-    gstate->scaled_font = NULL;
-}
-
-cairo_status_t
-_cairo_gstate_set_font_size (cairo_gstate_t *gstate,
-			     double          size)
-{
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    cairo_matrix_init_scale (&gstate->font_matrix, size, size);
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_set_font_matrix (cairo_gstate_t	    *gstate,
-			       const cairo_matrix_t *matrix)
-{
-    if (memcmp (matrix, &gstate->font_matrix, sizeof (cairo_matrix_t)) == 0)
-	return CAIRO_STATUS_SUCCESS;
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    gstate->font_matrix = *matrix;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-void
-_cairo_gstate_get_font_matrix (cairo_gstate_t *gstate,
-			       cairo_matrix_t *matrix)
-{
-    *matrix = gstate->font_matrix;
-}
-
-void
-_cairo_gstate_set_font_options (cairo_gstate_t             *gstate,
-				const cairo_font_options_t *options)
-{
-    if (memcmp (options, &gstate->font_options, sizeof (cairo_font_options_t)) == 0)
-	return;
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    _cairo_font_options_init_copy (&gstate->font_options, options);
-}
-
-void
-_cairo_gstate_get_font_options (cairo_gstate_t       *gstate,
-				cairo_font_options_t *options)
-{
-    *options = gstate->font_options;
-}
-
-cairo_status_t
-_cairo_gstate_get_font_face (cairo_gstate_t     *gstate,
-			     cairo_font_face_t **font_face)
-{
-    cairo_status_t status;
-
-    status = _cairo_gstate_ensure_font_face (gstate);
-    if (unlikely (status))
-	return status;
-
-    *font_face = gstate->font_face;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_get_scaled_font (cairo_gstate_t       *gstate,
-			       cairo_scaled_font_t **scaled_font)
-{
-    cairo_status_t status;
-
-    status = _cairo_gstate_ensure_scaled_font (gstate);
-    if (unlikely (status))
-	return status;
-
-    *scaled_font = gstate->scaled_font;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-/*
- * Like everything else in this file, fonts involve Too Many Coordinate Spaces;
- * it is easy to get confused about what's going on.
- *
- * The user's view
- * ---------------
- *
- * Users ask for things in user space. When cairo starts, a user space unit
- * is about 1/96 inch, which is similar to (but importantly different from)
- * the normal "point" units most users think in terms of. When a user
- * selects a font, its scale is set to "one user unit". The user can then
- * independently scale the user coordinate system *or* the font matrix, in
- * order to adjust the rendered size of the font.
- *
- * Metrics are returned in user space, whether they are obtained from
- * the currently selected font in a  #cairo_t or from a #cairo_scaled_font_t
- * which is a font specialized to a particular scale matrix, CTM, and target
- * surface.
- *
- * The font's view
- * ---------------
- *
- * Fonts are designed and stored (in say .ttf files) in "font space", which
- * describes an "EM Square" (a design tile) and has some abstract number
- * such as 1000, 1024, or 2048 units per "EM". This is basically an
- * uninteresting space for us, but we need to remember that it exists.
- *
- * Font resources (from libraries or operating systems) render themselves
- * to a particular device. Since they do not want to make most programmers
- * worry about the font design space, the scaling API is simplified to
- * involve just telling the font the required pixel size of the EM square
- * (that is, in device space).
- *
- *
- * Cairo's gstate view
- * -------------------
- *
- * In addition to the CTM and CTM inverse, we keep a matrix in the gstate
- * called the "font matrix" which describes the user's most recent
- * font-scaling or font-transforming request. This is kept in terms of an
- * abstract scale factor, composed with the CTM and used to set the font's
- * pixel size. So if the user asks to "scale the font by 12", the matrix
- * is:
- *
- *   [ 12.0, 0.0, 0.0, 12.0, 0.0, 0.0 ]
- *
- * It is an affine matrix, like all cairo matrices, where its tx and ty
- * components are used to "nudging" fonts around and are handled in gstate
- * and then ignored by the "scaled-font" layer.
- *
- * In order to perform any action on a font, we must build an object
- * called a #cairo_font_scale_t; this contains the central 2x2 matrix
- * resulting from "font matrix * CTM" (sans the font matrix translation
- * components as stated in the previous paragraph).
- *
- * We pass this to the font when making requests of it, which causes it to
- * reply for a particular [user request, device] combination, under the CTM
- * (to accommodate the "zoom in" == "bigger fonts" issue above).
- *
- * The other terms in our communication with the font are therefore in
- * device space. When we ask it to perform text->glyph conversion, it will
- * produce a glyph string in device space. Glyph vectors we pass to it for
- * measuring or rendering should be in device space. The metrics which we
- * get back from the font will be in device space. The contents of the
- * global glyph image cache will be in device space.
- *
- *
- * Cairo's public view
- * -------------------
- *
- * Since the values entering and leaving via public API calls are in user
- * space, the gstate functions typically need to multiply arguments by the
- * CTM (for user-input glyph vectors), and return values by the CTM inverse
- * (for font responses such as metrics or glyph vectors).
- *
- */
-
-static cairo_status_t
-_cairo_gstate_ensure_font_face (cairo_gstate_t *gstate)
-{
-    cairo_font_face_t *font_face;
-
-    if (gstate->font_face != NULL)
-	return gstate->font_face->status;
-
-
-    font_face = cairo_toy_font_face_create (CAIRO_FONT_FAMILY_DEFAULT,
-					    CAIRO_FONT_SLANT_DEFAULT,
-					    CAIRO_FONT_WEIGHT_DEFAULT);
-    if (font_face->status)
-	return font_face->status;
-
-    gstate->font_face = font_face;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_status_t
-_cairo_gstate_ensure_scaled_font (cairo_gstate_t *gstate)
-{
-    cairo_status_t status;
-    cairo_font_options_t options;
-    cairo_scaled_font_t *scaled_font;
-    cairo_matrix_t font_ctm;
-
-    if (gstate->scaled_font != NULL)
-	return gstate->scaled_font->status;
-
-    status = _cairo_gstate_ensure_font_face (gstate);
-    if (unlikely (status))
-	return status;
-
-    cairo_surface_get_font_options (gstate->target, &options);
-    cairo_font_options_merge (&options, &gstate->font_options);
-
-    cairo_matrix_multiply (&font_ctm,
-			   &gstate->ctm,
-			   &gstate->target->device_transform);
-
-    scaled_font = cairo_scaled_font_create (gstate->font_face,
-				            &gstate->font_matrix,
-					    &font_ctm,
-					    &options);
-
-    status = cairo_scaled_font_status (scaled_font);
-    if (unlikely (status))
-	return status;
-
-    gstate->scaled_font = scaled_font;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_get_font_extents (cairo_gstate_t *gstate,
-				cairo_font_extents_t *extents)
-{
-    cairo_status_t status = _cairo_gstate_ensure_scaled_font (gstate);
-    if (unlikely (status))
-	return status;
-
-    cairo_scaled_font_extents (gstate->scaled_font, extents);
-
-    return cairo_scaled_font_status (gstate->scaled_font);
-}
-
-cairo_status_t
-_cairo_gstate_set_font_face (cairo_gstate_t    *gstate,
-			     cairo_font_face_t *font_face)
-{
-    if (font_face && font_face->status)
-	return _cairo_error (font_face->status);
-
-    if (font_face == gstate->font_face)
-	return CAIRO_STATUS_SUCCESS;
-
-    cairo_font_face_destroy (gstate->font_face);
-    gstate->font_face = cairo_font_face_reference (font_face);
-
-    _cairo_gstate_unset_scaled_font (gstate);
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_gstate_glyph_extents (cairo_gstate_t *gstate,
-			     const cairo_glyph_t *glyphs,
-			     int num_glyphs,
-			     cairo_text_extents_t *extents)
-{
-    cairo_status_t status;
-
-    status = _cairo_gstate_ensure_scaled_font (gstate);
-    if (unlikely (status))
-	return status;
-
-    cairo_scaled_font_glyph_extents (gstate->scaled_font,
-				     glyphs, num_glyphs,
-				     extents);
-
-    return cairo_scaled_font_status (gstate->scaled_font);
-}
-
-cairo_status_t
-_cairo_gstate_show_text_glyphs (cairo_gstate_t		   *gstate,
-				const cairo_glyph_t	   *glyphs,
-				int			    num_glyphs,
-				cairo_glyph_text_info_t    *info)
-{
-    cairo_glyph_t stack_transformed_glyphs[CAIRO_STACK_ARRAY_LENGTH (cairo_glyph_t)];
-    cairo_text_cluster_t stack_transformed_clusters[CAIRO_STACK_ARRAY_LENGTH (cairo_text_cluster_t)];
-    cairo_pattern_union_t source_pattern;
-    cairo_glyph_t *transformed_glyphs;
-    const cairo_pattern_t *pattern;
-    cairo_text_cluster_t *transformed_clusters;
-    cairo_operator_t op;
-    cairo_status_t status;
-
-    status = _cairo_gstate_get_pattern_status (gstate->source);
-    if (unlikely (status))
-	return status;
-
-    if (gstate->op == CAIRO_OPERATOR_DEST)
-	return CAIRO_STATUS_SUCCESS;
-
-    if (_cairo_clip_is_all_clipped (gstate->clip))
-	return CAIRO_STATUS_SUCCESS;
-
-    status = _cairo_gstate_ensure_scaled_font (gstate);
-    if (unlikely (status))
-	return status;
-
-    transformed_glyphs = stack_transformed_glyphs;
-    transformed_clusters = stack_transformed_clusters;
-
-    if (num_glyphs > ARRAY_LENGTH (stack_transformed_glyphs)) {
-	transformed_glyphs = cairo_glyph_allocate (num_glyphs);
-	if (unlikely (transformed_glyphs == NULL))
-	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-    }
-
-    if (info != NULL) {
-	if (info->num_clusters > ARRAY_LENGTH (stack_transformed_clusters)) {
-	    transformed_clusters = cairo_text_cluster_allocate (info->num_clusters);
-	    if (unlikely (transformed_clusters == NULL)) {
-		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
-		goto CLEANUP_GLYPHS;
-	    }
-	}
-
-	_cairo_gstate_transform_glyphs_to_backend (gstate,
-						   glyphs, num_glyphs,
-						   info->clusters,
-						   info->num_clusters,
-						   info->cluster_flags,
-						   transformed_glyphs,
-						   &num_glyphs,
-						   transformed_clusters);
-    } else {
-	_cairo_gstate_transform_glyphs_to_backend (gstate,
-						   glyphs, num_glyphs,
-						   NULL, 0, 0,
-						   transformed_glyphs,
-						   &num_glyphs,
-						   NULL);
-    }
-
-    if (num_glyphs == 0)
-	goto CLEANUP_GLYPHS;
-
-    op = _reduce_op (gstate);
-    if (op == CAIRO_OPERATOR_CLEAR) {
-	pattern = &_cairo_pattern_clear.base;
-    } else {
-	_cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
-	pattern = &source_pattern.base;
-    }
-
-    /* For really huge font sizes, we can just do path;fill instead of
-     * show_glyphs, as show_glyphs would put excess pressure on the cache,
-     * and moreover, not all components below us correctly handle huge font
-     * sizes.  I wanted to set the limit at 256.  But alas, seems like cairo's
-     * rasterizer is something like ten times slower than freetype's for huge
-     * sizes.  So, no win just yet.  For now, do it for insanely-huge sizes,
-     * just to make sure we don't make anyone unhappy.  When we get a really
-     * fast rasterizer in cairo, we may want to readjust this.
-     *
-     * Needless to say, do this only if show_text_glyphs is not available. */
-    if (cairo_surface_has_show_text_glyphs (gstate->target) ||
-	_cairo_scaled_font_get_max_scale (gstate->scaled_font) <= 10240)
-    {
-
-	if (info != NULL) {
-	    status = _cairo_surface_show_text_glyphs (gstate->target, op, pattern,
-						      info->utf8, info->utf8_len,
-						      transformed_glyphs, num_glyphs,
-						      transformed_clusters, info->num_clusters,
-						      info->cluster_flags,
-						      gstate->scaled_font,
-						      gstate->clip);
-	} else {
-	    status = _cairo_surface_show_text_glyphs (gstate->target, op, pattern,
-						      NULL, 0,
-						      transformed_glyphs, num_glyphs,
-						      NULL, 0, 0,
-						      gstate->scaled_font,
-						      gstate->clip);
-	}
-    }
-    else
-    {
-	cairo_path_fixed_t path;
-
-	_cairo_path_fixed_init (&path);
-
-	status = _cairo_scaled_font_glyph_path (gstate->scaled_font,
-						transformed_glyphs, num_glyphs,
-						&path);
-
-	if (status == CAIRO_STATUS_SUCCESS) {
-	    status = _cairo_surface_fill (gstate->target, op, pattern,
-					  &path,
-					  CAIRO_FILL_RULE_WINDING,
-					  gstate->tolerance,
-					  gstate->scaled_font->options.antialias,
-					  gstate->clip);
-	}
-
-	_cairo_path_fixed_fini (&path);
-    }
-
-CLEANUP_GLYPHS:
-    if (transformed_glyphs != stack_transformed_glyphs)
-      cairo_glyph_free (transformed_glyphs);
-    if (transformed_clusters != stack_transformed_clusters)
-      cairo_text_cluster_free (transformed_clusters);
-
-    return status;
-}
-
-cairo_status_t
-_cairo_gstate_glyph_path (cairo_gstate_t      *gstate,
-			  const cairo_glyph_t *glyphs,
-			  int		       num_glyphs,
-			  cairo_path_fixed_t  *path)
-{
-    cairo_glyph_t stack_transformed_glyphs[CAIRO_STACK_ARRAY_LENGTH (cairo_glyph_t)];
-    cairo_glyph_t *transformed_glyphs;
-    cairo_status_t status;
-
-    status = _cairo_gstate_ensure_scaled_font (gstate);
-    if (unlikely (status))
-	return status;
-
-    if (num_glyphs < ARRAY_LENGTH (stack_transformed_glyphs)) {
-	transformed_glyphs = stack_transformed_glyphs;
-    } else {
-	transformed_glyphs = cairo_glyph_allocate (num_glyphs);
-	if (unlikely (transformed_glyphs == NULL))
-	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-    }
-
-    _cairo_gstate_transform_glyphs_to_backend (gstate,
-					       glyphs, num_glyphs,
-					       NULL, 0, 0,
-					       transformed_glyphs,
-					       &num_glyphs, NULL);
-
-    status = _cairo_scaled_font_glyph_path (gstate->scaled_font,
-					    transformed_glyphs, num_glyphs,
-					    path);
-
-    if (transformed_glyphs != stack_transformed_glyphs)
-      cairo_glyph_free (transformed_glyphs);
-
-    return status;
-}
-
-cairo_status_t
-_cairo_gstate_set_antialias (cairo_gstate_t *gstate,
-			     cairo_antialias_t antialias)
-{
-    gstate->antialias = antialias;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_antialias_t
-_cairo_gstate_get_antialias (cairo_gstate_t *gstate)
-{
-    return gstate->antialias;
-}
-
-/**
- * _cairo_gstate_transform_glyphs_to_backend:
- * @gstate: a #cairo_gstate_t
- * @glyphs: the array of #cairo_glyph_t objects to be transformed
- * @num_glyphs: the number of elements in @glyphs
- * @transformed_glyphs: a pre-allocated array of at least @num_glyphs
- * #cairo_glyph_t objects
- * @num_transformed_glyphs: the number of elements in @transformed_glyphs
- * after dropping out of bounds glyphs, or %NULL if glyphs shouldn't be
- * dropped
- *
- * Transform an array of glyphs to backend space by first adding the offset
- * of the font matrix, then transforming from user space to backend space.
- * The result of the transformation is placed in @transformed_glyphs.
- *
- * This also uses information from the scaled font and the surface to
- * cull/drop glyphs that will not be visible.
- **/
-static void
-_cairo_gstate_transform_glyphs_to_backend (cairo_gstate_t	*gstate,
-                                           const cairo_glyph_t	*glyphs,
-                                           int			 num_glyphs,
-					   const cairo_text_cluster_t	*clusters,
-					   int			 num_clusters,
-					   cairo_text_cluster_flags_t cluster_flags,
-                                           cairo_glyph_t	*transformed_glyphs,
-					   int			*num_transformed_glyphs,
-					   cairo_text_cluster_t *transformed_clusters)
-{
-    cairo_rectangle_int_t surface_extents;
-    cairo_matrix_t *ctm = &gstate->ctm;
-    cairo_matrix_t *font_matrix = &gstate->font_matrix;
-    cairo_matrix_t *device_transform = &gstate->target->device_transform;
-    cairo_bool_t drop = FALSE;
-    double x1 = 0, x2 = 0, y1 = 0, y2 = 0;
-    int i, j, k;
-
-    drop = TRUE;
-    if (! _cairo_gstate_int_clip_extents (gstate, &surface_extents)) {
-	drop = FALSE; /* unbounded surface */
-    } else {
-	double scale10 = 10 * _cairo_scaled_font_get_max_scale (gstate->scaled_font);
-	if (surface_extents.width == 0 || surface_extents.height == 0) {
-	  /* No visible area.  Don't draw anything */
-	  *num_transformed_glyphs = 0;
-	  return;
-	}
-	/* XXX We currently drop any glyphs that have their position outside
-	 * of the surface boundaries by a safety margin depending on the
-	 * font scale.  This however can fail in extreme cases where the
-	 * font has really long swashes for example...  We can correctly
-	 * handle that by looking the glyph up and using its device bbox
-	 * to device if it's going to be visible, but I'm not inclined to
-	 * do that now.
-	 */
-	x1 = surface_extents.x - scale10;
-	y1 = surface_extents.y - scale10;
-	x2 = surface_extents.x + (int) surface_extents.width  + scale10;
-	y2 = surface_extents.y + (int) surface_extents.height + scale10;
-    }
-
-    if (!drop)
-	*num_transformed_glyphs = num_glyphs;
-
-#define KEEP_GLYPH(glyph) (x1 <= glyph.x && glyph.x <= x2 && y1 <= glyph.y && glyph.y <= y2)
-
-    j = 0;
-    if (_cairo_matrix_is_identity (ctm) &&
-        _cairo_matrix_is_identity (device_transform) &&
-	font_matrix->x0 == 0 && font_matrix->y0 == 0)
-    {
-	if (! drop) {
-	    memcpy (transformed_glyphs, glyphs,
-		    num_glyphs * sizeof (cairo_glyph_t));
-	    memcpy (transformed_clusters, clusters,
-		    num_clusters * sizeof (cairo_text_cluster_t));
-	    j = num_glyphs;
-	} else if (num_clusters == 0) {
-	    for (i = 0; i < num_glyphs; i++) {
-		transformed_glyphs[j].index = glyphs[i].index;
-		transformed_glyphs[j].x = glyphs[i].x;
-		transformed_glyphs[j].y = glyphs[i].y;
-		if (KEEP_GLYPH (transformed_glyphs[j]))
-		    j++;
-	    }
-	} else {
-	    const cairo_glyph_t *cur_glyph;
-
-	    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
-		cur_glyph = glyphs + num_glyphs - 1;
-	    else
-		cur_glyph = glyphs;
-
-	    for (i = 0; i < num_clusters; i++) {
-		cairo_bool_t cluster_visible = FALSE;
-
-		for (k = 0; k < clusters[i].num_glyphs; k++) {
-		    transformed_glyphs[j+k].index = cur_glyph->index;
-		    transformed_glyphs[j+k].x = cur_glyph->x;
-		    transformed_glyphs[j+k].y = cur_glyph->y;
-		    if (KEEP_GLYPH (transformed_glyphs[j+k]))
-			cluster_visible = TRUE;
-
-		    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
-			cur_glyph--;
-		    else
-			cur_glyph++;
-		}
-
-		transformed_clusters[i] = clusters[i];
-		if (cluster_visible)
-		    j += k;
-		else
-		    transformed_clusters[i].num_glyphs = 0;
-	    }
-	}
-    }
-    else if (_cairo_matrix_is_translation (ctm) &&
-             _cairo_matrix_is_translation (device_transform))
-    {
-        double tx = font_matrix->x0 + ctm->x0 + device_transform->x0;
-        double ty = font_matrix->y0 + ctm->y0 + device_transform->y0;
-
-	if (! drop || num_clusters == 0) {
-	    for (i = 0; i < num_glyphs; i++) {
-		transformed_glyphs[j].index = glyphs[i].index;
-		transformed_glyphs[j].x = glyphs[i].x + tx;
-		transformed_glyphs[j].y = glyphs[i].y + ty;
-		if (!drop || KEEP_GLYPH (transformed_glyphs[j]))
-		    j++;
-	    }
-	    memcpy (transformed_clusters, clusters,
-		    num_clusters * sizeof (cairo_text_cluster_t));
-	} else {
-	    const cairo_glyph_t *cur_glyph;
-
-	    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
-		cur_glyph = glyphs + num_glyphs - 1;
-	    else
-		cur_glyph = glyphs;
-
-	    for (i = 0; i < num_clusters; i++) {
-		cairo_bool_t cluster_visible = FALSE;
-
-		for (k = 0; k < clusters[i].num_glyphs; k++) {
-		    transformed_glyphs[j+k].index = cur_glyph->index;
-		    transformed_glyphs[j+k].x = cur_glyph->x + tx;
-		    transformed_glyphs[j+k].y = cur_glyph->y + ty;
-		    if (KEEP_GLYPH (transformed_glyphs[j+k]))
-			cluster_visible = TRUE;
-
-		    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
-			cur_glyph--;
-		    else
-			cur_glyph++;
-		}
-
-		transformed_clusters[i] = clusters[i];
-		if (cluster_visible)
-		    j += k;
-		else
-		    transformed_clusters[i].num_glyphs = 0;
-	    }
-	}
-    }
-    else
-    {
-        cairo_matrix_t aggregate_transform;
-
-        cairo_matrix_init_translate (&aggregate_transform,
-                                     gstate->font_matrix.x0,
-                                     gstate->font_matrix.y0);
-        cairo_matrix_multiply (&aggregate_transform,
-                               &aggregate_transform, ctm);
-        cairo_matrix_multiply (&aggregate_transform,
-                               &aggregate_transform, device_transform);
-
-	if (! drop || num_clusters == 0) {
-	    for (i = 0; i < num_glyphs; i++) {
-		transformed_glyphs[j] = glyphs[i];
-		cairo_matrix_transform_point (&aggregate_transform,
-					      &transformed_glyphs[j].x,
-					      &transformed_glyphs[j].y);
-		if (! drop || KEEP_GLYPH (transformed_glyphs[j]))
-		    j++;
-	    }
-	    memcpy (transformed_clusters, clusters,
-		    num_clusters * sizeof (cairo_text_cluster_t));
-	} else {
-	    const cairo_glyph_t *cur_glyph;
-
-	    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
-		cur_glyph = glyphs + num_glyphs - 1;
-	    else
-		cur_glyph = glyphs;
-
-	    for (i = 0; i < num_clusters; i++) {
-		cairo_bool_t cluster_visible = FALSE;
-		for (k = 0; k < clusters[i].num_glyphs; k++) {
-		    transformed_glyphs[j+k] = *cur_glyph;
-		    cairo_matrix_transform_point (&aggregate_transform,
-						  &transformed_glyphs[j+k].x,
-						  &transformed_glyphs[j+k].y);
-		    if (KEEP_GLYPH (transformed_glyphs[j+k]))
-			cluster_visible = TRUE;
-
-		    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
-			cur_glyph--;
-		    else
-			cur_glyph++;
-		}
-
-		transformed_clusters[i] = clusters[i];
-		if (cluster_visible)
-		    j += k;
-		else
-		    transformed_clusters[i].num_glyphs = 0;
-	    }
-	}
-    }
-    *num_transformed_glyphs = j;
-
-    if (num_clusters != 0 && cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD) {
-	for (i = 0; i < --j; i++) {
-	    cairo_glyph_t tmp;
-
-	    tmp = transformed_glyphs[i];
-	    transformed_glyphs[i] = transformed_glyphs[j];
-	    transformed_glyphs[j] = tmp;
-	}
-    }
-}