Rename cairo-path.c to cairo-path-fixed.c

1 files changed, 0 insertions, 639 deletions

diff --git a/src/cairo-path.c b/src/cairo-path.c
deleted file mode 100644
index 9549f8d3f..000000000
--- a/src/cairo-path.c
+++ /dev/null
@@ -1,639 +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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <stdlib.h>
-#include "cairoint.h"
-
-#include "cairo-path-fixed-private.h"
-
-/* private functions */
-static cairo_status_t
-_cairo_path_fixed_add (cairo_path_fixed_t *path,
-		       cairo_path_op_t 	   op,
-		       cairo_point_t	  *points,
-		       int		   num_points);
-
-static void
-_cairo_path_fixed_add_op_buf (cairo_path_fixed_t  *path,
-			      cairo_path_op_buf_t *op_buf);
-
-static void
-_cairo_path_fixed_add_arg_buf (cairo_path_fixed_t   *path,
-			       cairo_path_arg_buf_t *arg_buf);
-
-static cairo_path_op_buf_t *
-_cairo_path_op_buf_create (void);
-
-static void
-_cairo_path_op_buf_destroy (cairo_path_op_buf_t *op_buf);
-
-static void
-_cairo_path_op_buf_add_op (cairo_path_op_buf_t *op_buf,
-			   cairo_path_op_t      op);
-
-static cairo_path_arg_buf_t *
-_cairo_path_arg_buf_create (void);
-
-static void
-_cairo_path_arg_buf_destroy (cairo_path_arg_buf_t *arg_buf);
-
-static void
-_cairo_path_arg_buf_add_points (cairo_path_arg_buf_t *arg_buf,
-				cairo_point_t	     *points,
-				int		      num_points);
-
-void
-_cairo_path_fixed_init (cairo_path_fixed_t *path)
-{
-    path->op_buf_head = NULL;
-    path->op_buf_tail = NULL;
-
-    path->arg_buf_head = NULL;
-    path->arg_buf_tail = NULL;
-
-    path->current_point.x = 0;
-    path->current_point.y = 0;
-    path->has_current_point = FALSE;
-    path->last_move_point = path->current_point;
-}
-
-cairo_status_t
-_cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
-			     cairo_path_fixed_t *other)
-{
-    cairo_path_op_buf_t *op_buf, *other_op_buf;
-    cairo_path_arg_buf_t *arg_buf, *other_arg_buf;
-
-    _cairo_path_fixed_init (path);
-    path->current_point = other->current_point;
-    path->has_current_point = other->has_current_point;
-    path->last_move_point = other->last_move_point;
-
-    for (other_op_buf = other->op_buf_head;
-	 other_op_buf;
-	 other_op_buf = other_op_buf->next)
-    {
-	op_buf = _cairo_path_op_buf_create ();
-	if (op_buf == NULL) {
-	    _cairo_path_fixed_fini (path);
-	    return CAIRO_STATUS_NO_MEMORY;
-	}
-	memcpy (op_buf, other_op_buf, sizeof (cairo_path_op_buf_t));
-	_cairo_path_fixed_add_op_buf (path, op_buf);
-    }
-
-    for (other_arg_buf = other->arg_buf_head;
-	 other_arg_buf;
-	 other_arg_buf = other_arg_buf->next)
-    {
-	arg_buf = _cairo_path_arg_buf_create ();
-	if (arg_buf == NULL) {
-	    _cairo_path_fixed_fini (path);
-	    return CAIRO_STATUS_NO_MEMORY;
-	}
-	memcpy (arg_buf, other_arg_buf, sizeof (cairo_path_arg_buf_t));
-	_cairo_path_fixed_add_arg_buf (path, arg_buf);
-    }
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_path_fixed_t *
-_cairo_path_fixed_create (void)
-{
-    cairo_path_fixed_t	*path = malloc (sizeof (cairo_path_fixed_t));
-
-    if (!path)
-	return NULL;
-    _cairo_path_fixed_init (path);
-    return path;
-}
-
-void
-_cairo_path_fixed_fini (cairo_path_fixed_t *path)
-{
-    cairo_path_op_buf_t *op_buf;
-    cairo_path_arg_buf_t *arg_buf;
-
-    while (path->op_buf_head) {
-	op_buf = path->op_buf_head;
-	path->op_buf_head = op_buf->next;
-	_cairo_path_op_buf_destroy (op_buf);
-    }
-    path->op_buf_tail = NULL;
-
-    while (path->arg_buf_head) {
-	arg_buf = path->arg_buf_head;
-	path->arg_buf_head = arg_buf->next;
-	_cairo_path_arg_buf_destroy (arg_buf);
-    }
-    path->arg_buf_tail = NULL;
-
-    path->has_current_point = FALSE;
-}
-
-void
-_cairo_path_fixed_destroy (cairo_path_fixed_t *path)
-{
-    _cairo_path_fixed_fini (path);
-    free (path);
-}
-
-cairo_status_t
-_cairo_path_fixed_move_to (cairo_path_fixed_t  *path,
-			   cairo_fixed_t	x,
-			   cairo_fixed_t	y)
-{
-    cairo_status_t status;
-    cairo_point_t point;
-
-    point.x = x;
-    point.y = y;
-
-    status = _cairo_path_fixed_add (path, CAIRO_PATH_OP_MOVE_TO, &point, 1);
-    if (status)
-	return status;
-
-    path->current_point = point;
-    path->has_current_point = TRUE;
-    path->last_move_point = path->current_point;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-void
-_cairo_path_fixed_new_sub_path (cairo_path_fixed_t *path)
-{
-    path->has_current_point = FALSE;
-}
-
-cairo_status_t
-_cairo_path_fixed_rel_move_to (cairo_path_fixed_t *path,
-			       cairo_fixed_t	   dx,
-			       cairo_fixed_t	   dy)
-{
-    cairo_fixed_t x, y;
-
-    if (! path->has_current_point)
-	return CAIRO_STATUS_NO_CURRENT_POINT;
-
-    x = path->current_point.x + dx;
-    y = path->current_point.y + dy;
-
-    return _cairo_path_fixed_move_to (path, x, y);
-}
-
-cairo_status_t
-_cairo_path_fixed_line_to (cairo_path_fixed_t *path,
-			   cairo_fixed_t	x,
-			   cairo_fixed_t	y)
-{
-    cairo_status_t status;
-    cairo_point_t point;
-
-    point.x = x;
-    point.y = y;
-
-    /* When there is not yet a current point, the line_to operation
-     * becomes a move_to instead. Note: We have to do this by
-     * explicitly calling into _cairo_path_fixed_line_to to ensure
-     * that the last_move_point state is updated properly.
-     */
-    if (! path->has_current_point)
-	status = _cairo_path_fixed_move_to (path, point.x, point.y);
-    else
-	status = _cairo_path_fixed_add (path, CAIRO_PATH_OP_LINE_TO, &point, 1);
-
-    if (status)
-	return status;
-
-    path->current_point = point;
-    path->has_current_point = TRUE;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_path_fixed_rel_line_to (cairo_path_fixed_t *path,
-			       cairo_fixed_t	   dx,
-			       cairo_fixed_t	   dy)
-{
-    cairo_fixed_t x, y;
-
-    if (! path->has_current_point)
-	return CAIRO_STATUS_NO_CURRENT_POINT;
-
-    x = path->current_point.x + dx;
-    y = path->current_point.y + dy;
-
-    return _cairo_path_fixed_line_to (path, x, y);
-}
-
-cairo_status_t
-_cairo_path_fixed_curve_to (cairo_path_fixed_t	*path,
-			    cairo_fixed_t x0, cairo_fixed_t y0,
-			    cairo_fixed_t x1, cairo_fixed_t y1,
-			    cairo_fixed_t x2, cairo_fixed_t y2)
-{
-    cairo_status_t status;
-    cairo_point_t point[3];
-
-    point[0].x = x0; point[0].y = y0;
-    point[1].x = x1; point[1].y = y1;
-    point[2].x = x2; point[2].y = y2;
-
-    if (! path->has_current_point) {
-	status = _cairo_path_fixed_add (path, CAIRO_PATH_OP_MOVE_TO,
-					&point[0], 1);
-	if (status)
-	    return status;
-    }
-
-    status = _cairo_path_fixed_add (path, CAIRO_PATH_OP_CURVE_TO, point, 3);
-    if (status)
-	return status;
-
-    path->current_point = point[2];
-    path->has_current_point = TRUE;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_path_fixed_rel_curve_to (cairo_path_fixed_t *path,
-				cairo_fixed_t dx0, cairo_fixed_t dy0,
-				cairo_fixed_t dx1, cairo_fixed_t dy1,
-				cairo_fixed_t dx2, cairo_fixed_t dy2)
-{
-    cairo_fixed_t x0, y0;
-    cairo_fixed_t x1, y1;
-    cairo_fixed_t x2, y2;
-
-    if (! path->has_current_point)
-	return CAIRO_STATUS_NO_CURRENT_POINT;
-
-    x0 = path->current_point.x + dx0;
-    y0 = path->current_point.y + dy0;
-
-    x1 = path->current_point.x + dx1;
-    y1 = path->current_point.y + dy1;
-
-    x2 = path->current_point.x + dx2;
-    y2 = path->current_point.y + dy2;
-
-    return _cairo_path_fixed_curve_to (path,
-				       x0, y0,
-				       x1, y1,
-				       x2, y2);
-}
-
-cairo_status_t
-_cairo_path_fixed_close_path (cairo_path_fixed_t *path)
-{
-    cairo_status_t status;
-
-    if (! path->has_current_point)
-	return CAIRO_STATUS_SUCCESS;
-
-    status = _cairo_path_fixed_add (path, CAIRO_PATH_OP_CLOSE_PATH, NULL, 0);
-    if (status)
-	return status;
-
-    status = _cairo_path_fixed_move_to (path,
-					path->last_move_point.x,
-					path->last_move_point.y);
-    if (status)
-	return status;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-cairo_status_t
-_cairo_path_fixed_get_current_point (cairo_path_fixed_t *path,
-				     cairo_fixed_t	*x,
-				     cairo_fixed_t	*y)
-{
-    if (! path->has_current_point)
-	return CAIRO_STATUS_NO_CURRENT_POINT;
-
-    *x = path->current_point.x;
-    *y = path->current_point.y;
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_status_t
-_cairo_path_fixed_add (cairo_path_fixed_t *path,
-		       cairo_path_op_t	   op,
-		       cairo_point_t	  *points,
-		       int		   num_points)
-{
-    if (path->op_buf_tail == NULL ||
-	path->op_buf_tail->num_ops + 1 > CAIRO_PATH_BUF_SIZE)
-    {
-	cairo_path_op_buf_t *op_buf;
-
-	op_buf = _cairo_path_op_buf_create ();
-	if (op_buf == NULL)
-	    return CAIRO_STATUS_NO_MEMORY;
-
-	_cairo_path_fixed_add_op_buf (path, op_buf);
-    }
-
-    _cairo_path_op_buf_add_op (path->op_buf_tail, op);
-
-    if (path->arg_buf_tail == NULL ||
-	path->arg_buf_tail->num_points + num_points > CAIRO_PATH_BUF_SIZE)
-    {
-	cairo_path_arg_buf_t *arg_buf;
-
-	arg_buf = _cairo_path_arg_buf_create ();
-
-	if (arg_buf == NULL)
-	    return CAIRO_STATUS_NO_MEMORY;
-
-	_cairo_path_fixed_add_arg_buf (path, arg_buf);
-    }
-
-    _cairo_path_arg_buf_add_points (path->arg_buf_tail, points, num_points);
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-static void
-_cairo_path_fixed_add_op_buf (cairo_path_fixed_t  *path,
-			      cairo_path_op_buf_t *op_buf)
-{
-    op_buf->next = NULL;
-    op_buf->prev = path->op_buf_tail;
-
-    if (path->op_buf_tail) {
-	path->op_buf_tail->next = op_buf;
-    } else {
-	path->op_buf_head = op_buf;
-    }
-
-    path->op_buf_tail = op_buf;
-}
-
-static void
-_cairo_path_fixed_add_arg_buf (cairo_path_fixed_t   *path,
-			       cairo_path_arg_buf_t *arg_buf)
-{
-    arg_buf->next = NULL;
-    arg_buf->prev = path->arg_buf_tail;
-
-    if (path->arg_buf_tail) {
-	path->arg_buf_tail->next = arg_buf;
-    } else {
-	path->arg_buf_head = arg_buf;
-    }
-
-    path->arg_buf_tail = arg_buf;
-}
-
-static cairo_path_op_buf_t *
-_cairo_path_op_buf_create (void)
-{
-    cairo_path_op_buf_t *op_buf;
-
-    op_buf = malloc (sizeof (cairo_path_op_buf_t));
-
-    if (op_buf) {
-	op_buf->num_ops = 0;
-	op_buf->next = NULL;
-    }
-
-    return op_buf;
-}
-
-static void
-_cairo_path_op_buf_destroy (cairo_path_op_buf_t *op_buf)
-{
-    free (op_buf);
-}
-
-static void
-_cairo_path_op_buf_add_op (cairo_path_op_buf_t *op_buf,
-			   cairo_path_op_t	op)
-{
-    op_buf->op[op_buf->num_ops++] = op;
-}
-
-static cairo_path_arg_buf_t *
-_cairo_path_arg_buf_create (void)
-{
-    cairo_path_arg_buf_t *arg_buf;
-
-    arg_buf = malloc (sizeof (cairo_path_arg_buf_t));
-
-    if (arg_buf) {
-	arg_buf->num_points = 0;
-	arg_buf->next = NULL;
-    }
-
-    return arg_buf;
-}
-
-static void
-_cairo_path_arg_buf_destroy (cairo_path_arg_buf_t *arg_buf)
-{
-    free (arg_buf);
-}
-
-static void
-_cairo_path_arg_buf_add_points (cairo_path_arg_buf_t *arg_buf,
-				cairo_point_t	     *points,
-				int		      num_points)
-{
-    int i;
-
-    for (i=0; i < num_points; i++) {
-	arg_buf->points[arg_buf->num_points++] = points[i];
-    }
-}
-
-#define CAIRO_PATH_OP_MAX_ARGS 3
-
-static int const num_args[] =
-{
-    1, /* cairo_path_move_to */
-    1, /* cairo_path_op_line_to */
-    3, /* cairo_path_op_curve_to */
-    0, /* cairo_path_op_close_path */
-};
-
-cairo_status_t
-_cairo_path_fixed_interpret (cairo_path_fixed_t			*path,
-			     cairo_direction_t			 dir,
-			     cairo_path_fixed_move_to_func_t	*move_to,
-			     cairo_path_fixed_line_to_func_t	*line_to,
-			     cairo_path_fixed_curve_to_func_t	*curve_to,
-			     cairo_path_fixed_close_path_func_t	*close_path,
-			     void				*closure)
-{
-    cairo_status_t status;
-    int i, arg;
-    cairo_path_op_buf_t *op_buf;
-    cairo_path_op_t op;
-    cairo_path_arg_buf_t *arg_buf = path->arg_buf_head;
-    int buf_i = 0;
-    cairo_point_t point[CAIRO_PATH_OP_MAX_ARGS];
-    cairo_bool_t forward = (dir == CAIRO_DIRECTION_FORWARD);
-    int step = forward ? 1 : -1;
-
-    for (op_buf = forward ? path->op_buf_head : path->op_buf_tail;
-	 op_buf;
-	 op_buf = forward ? op_buf->next : op_buf->prev)
-    {
-	int start, stop;
-	if (forward) {
-	    start = 0;
-	    stop = op_buf->num_ops;
-	} else {
-	    start = op_buf->num_ops - 1;
-	    stop = -1;
-	}
-
-	for (i=start; i != stop; i += step) {
-	    op = op_buf->op[i];
-
-	    if (! forward) {
-		if (buf_i == 0) {
-		    arg_buf = arg_buf->prev;
-		    buf_i = arg_buf->num_points;
-		}
-		buf_i -= num_args[op];
-	    }
-
-	    for (arg = 0; arg < num_args[op]; arg++) {
-		point[arg] = arg_buf->points[buf_i];
-		buf_i++;
-		if (buf_i >= arg_buf->num_points) {
-		    arg_buf = arg_buf->next;
-		    buf_i = 0;
-		}
-	    }
-
-	    if (! forward) {
-		buf_i -= num_args[op];
-	    }
-
-	    switch (op) {
-	    case CAIRO_PATH_OP_MOVE_TO:
-		status = (*move_to) (closure, &point[0]);
-		break;
-	    case CAIRO_PATH_OP_LINE_TO:
-		status = (*line_to) (closure, &point[0]);
-		break;
-	    case CAIRO_PATH_OP_CURVE_TO:
-		status = (*curve_to) (closure, &point[0], &point[1], &point[2]);
-		break;
-	    case CAIRO_PATH_OP_CLOSE_PATH:
-	    default:
-		status = (*close_path) (closure);
-		break;
-	    }
-	    if (status)
-		return status;
-	}
-    }
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
-static void
-_cairo_path_fixed_offset_and_scale (cairo_path_fixed_t *path,
-				    cairo_fixed_t offx,
-				    cairo_fixed_t offy,
-				    cairo_fixed_t scalex,
-				    cairo_fixed_t scaley)
-{
-    cairo_path_arg_buf_t *arg_buf = path->arg_buf_head;
-    int i;
-    cairo_int64_t i64temp;
-    cairo_fixed_t fixedtemp;
-
-    while (arg_buf) {
-	 for (i = 0; i < arg_buf->num_points; i++) {
-	     if (scalex == CAIRO_FIXED_ONE) {
-		 arg_buf->points[i].x += offx;
-	     } else {
-		 fixedtemp = arg_buf->points[i].x + offx;
-		 i64temp = _cairo_int32x32_64_mul (fixedtemp, scalex);
-		 arg_buf->points[i].x = _cairo_int64_to_int32(_cairo_int64_rsl (i64temp, 16));
-	     }
-
-	     if (scaley == CAIRO_FIXED_ONE) {
-		 arg_buf->points[i].y += offy;
-	     } else {
-		 fixedtemp = arg_buf->points[i].y + offy;
-		 i64temp = _cairo_int32x32_64_mul (fixedtemp, scaley);
-		 arg_buf->points[i].y = _cairo_int64_to_int32(_cairo_int64_rsl (i64temp, 16));
-	     }
-	 }
-
-	 arg_buf = arg_buf->next;
-    }
-}
-
-
-/**
- * _cairo_path_fixed_device_transform:
- * @path: a #cairo_path_fixed_t to be transformed
- * @device_transform: a matrix with only scaling/translation (no rotation or shear)
- *
- * Transform the fixed-point path according to the scaling and
- * translation of the given matrix. This function assert()s that the
- * given matrix has no rotation or shear elements, (that is, xy and yx
- * are 0.0).
- **/
-void
-_cairo_path_fixed_device_transform (cairo_path_fixed_t	*path,
-				    cairo_matrix_t	*device_transform)
-{
-    assert (device_transform->yx == 0.0 && device_transform->xy == 0.0);
-    /* XXX: FRAGILE: I'm not really sure whether we're doing the
-     * "right" thing here if there is both scaling and translation in
-     * the matrix. But for now, the internals guarantee that we won't
-     * really ever have both going on. */
-    _cairo_path_fixed_offset_and_scale (path,
-					_cairo_fixed_from_double (device_transform->x0),
-					_cairo_fixed_from_double (device_transform->y0),
-					_cairo_fixed_from_double (device_transform->xx),
-					_cairo_fixed_from_double (device_transform->yy));
-}