diff options
Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-default-context.c')
| -rw-r--r-- | libs/cairo-1.16.0/src/cairo-default-context.c | 1496 |
1 files changed, 0 insertions, 1496 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-default-context.c b/libs/cairo-1.16.0/src/cairo-default-context.c deleted file mode 100644 index 985215f..0000000 --- a/libs/cairo-1.16.0/src/cairo-default-context.c +++ /dev/null @@ -1,1496 +0,0 @@ -/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ -/* cairo - a vector graphics library with display and print output - * - * Copyright © 2002 University of Southern California - * Copyright © 2005 Red Hat, Inc. - * Copyright © 2011 Intel Corporation - * - * 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> - * Chris Wilson <chris@chris-wilson.co.uk> - */ - -#include "cairoint.h" - -#include "cairo-private.h" -#include "cairo-arc-private.h" -#include "cairo-backend-private.h" -#include "cairo-clip-inline.h" -#include "cairo-default-context-private.h" -#include "cairo-error-private.h" -#include "cairo-freed-pool-private.h" -#include "cairo-path-private.h" -#include "cairo-pattern-private.h" - -#define CAIRO_TOLERANCE_MINIMUM _cairo_fixed_to_double(1) - -#if !defined(INFINITY) -#define INFINITY HUGE_VAL -#endif - -static freed_pool_t context_pool; - -void -_cairo_default_context_reset_static_data (void) -{ - _freed_pool_reset (&context_pool); -} - -void -_cairo_default_context_fini (cairo_default_context_t *cr) -{ - while (cr->gstate != &cr->gstate_tail[0]) { - if (_cairo_gstate_restore (&cr->gstate, &cr->gstate_freelist)) - break; - } - - _cairo_gstate_fini (cr->gstate); - cr->gstate_freelist = cr->gstate_freelist->next; /* skip over tail[1] */ - while (cr->gstate_freelist != NULL) { - cairo_gstate_t *gstate = cr->gstate_freelist; - cr->gstate_freelist = gstate->next; - free (gstate); - } - - _cairo_path_fixed_fini (cr->path); - - _cairo_fini (&cr->base); -} - -static void -_cairo_default_context_destroy (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_default_context_fini (cr); - - /* mark the context as invalid to protect against misuse */ - cr->base.status = CAIRO_STATUS_NULL_POINTER; - _freed_pool_put (&context_pool, cr); -} - -static cairo_surface_t * -_cairo_default_context_get_original_target (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_original_target (cr->gstate); -} - -static cairo_surface_t * -_cairo_default_context_get_current_target (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_target (cr->gstate); -} - -static cairo_status_t -_cairo_default_context_save (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_save (&cr->gstate, &cr->gstate_freelist); -} - -static cairo_status_t -_cairo_default_context_restore (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - if (unlikely (_cairo_gstate_is_group (cr->gstate))) - return _cairo_error (CAIRO_STATUS_INVALID_RESTORE); - - return _cairo_gstate_restore (&cr->gstate, &cr->gstate_freelist); -} - -static cairo_status_t -_cairo_default_context_push_group (void *abstract_cr, cairo_content_t content) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_surface_t *group_surface; - cairo_clip_t *clip; - cairo_status_t status; - - clip = _cairo_gstate_get_clip (cr->gstate); - if (_cairo_clip_is_all_clipped (clip)) { - group_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0); - status = group_surface->status; - if (unlikely (status)) - goto bail; - } else { - cairo_surface_t *parent_surface; - cairo_rectangle_int_t extents; - cairo_bool_t bounded, is_empty; - - parent_surface = _cairo_gstate_get_target (cr->gstate); - - if (unlikely (parent_surface->status)) - return parent_surface->status; - if (unlikely (parent_surface->finished)) - return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED); - - /* Get the extents that we'll use in creating our new group surface */ - bounded = _cairo_surface_get_extents (parent_surface, &extents); - if (clip) - /* XXX: This assignment just fixes a compiler warning? */ - is_empty = _cairo_rectangle_intersect (&extents, - _cairo_clip_get_extents (clip)); - - if (!bounded) { - /* XXX: Generic solution? */ - group_surface = cairo_recording_surface_create (content, NULL); - extents.x = extents.y = 0; - } else { - group_surface = _cairo_surface_create_scratch (parent_surface, - content, - extents.width, - extents.height, - CAIRO_COLOR_TRANSPARENT); - } - status = group_surface->status; - if (unlikely (status)) - goto bail; - - /* Set device offsets on the new surface so that logically it appears at - * the same location on the parent surface -- when we pop_group this, - * the source pattern will get fixed up for the appropriate target surface - * device offsets, so we want to set our own surface offsets from /that/, - * and not from the device origin. */ - cairo_surface_set_device_offset (group_surface, - parent_surface->device_transform.x0 - extents.x, - parent_surface->device_transform.y0 - extents.y); - - cairo_surface_set_device_scale (group_surface, - parent_surface->device_transform.xx, - parent_surface->device_transform.yy); - - /* If we have a current path, we need to adjust it to compensate for - * the device offset just applied. */ - _cairo_path_fixed_translate (cr->path, - _cairo_fixed_from_int (-extents.x), - _cairo_fixed_from_int (-extents.y)); - } - - /* create a new gstate for the redirect */ - status = _cairo_gstate_save (&cr->gstate, &cr->gstate_freelist); - if (unlikely (status)) - goto bail; - - status = _cairo_gstate_redirect_target (cr->gstate, group_surface); - -bail: - cairo_surface_destroy (group_surface); - return status; -} - -static cairo_pattern_t * -_cairo_default_context_pop_group (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_surface_t *group_surface; - cairo_pattern_t *group_pattern; - cairo_surface_t *parent_surface; - cairo_matrix_t group_matrix; - cairo_status_t status; - - /* Verify that we are at the right nesting level */ - if (unlikely (! _cairo_gstate_is_group (cr->gstate))) - return _cairo_pattern_create_in_error (CAIRO_STATUS_INVALID_POP_GROUP); - - /* Get a reference to the active surface before restoring */ - group_surface = _cairo_gstate_get_target (cr->gstate); - group_surface = cairo_surface_reference (group_surface); - - status = _cairo_gstate_restore (&cr->gstate, &cr->gstate_freelist); - assert (status == CAIRO_STATUS_SUCCESS); - - parent_surface = _cairo_gstate_get_target (cr->gstate); - - group_pattern = cairo_pattern_create_for_surface (group_surface); - status = group_pattern->status; - if (unlikely (status)) - goto done; - - _cairo_gstate_get_matrix (cr->gstate, &group_matrix); - cairo_pattern_set_matrix (group_pattern, &group_matrix); - - /* If we have a current path, we need to adjust it to compensate for - * the device offset just removed. */ - _cairo_path_fixed_translate (cr->path, - _cairo_fixed_from_int (parent_surface->device_transform.x0 - group_surface->device_transform.x0), - _cairo_fixed_from_int (parent_surface->device_transform.y0 - group_surface->device_transform.y0)); - -done: - cairo_surface_destroy (group_surface); - - return group_pattern; -} - -static cairo_status_t -_cairo_default_context_set_source (void *abstract_cr, - cairo_pattern_t *source) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_source (cr->gstate, source); -} - -static cairo_bool_t -_current_source_matches_solid (const cairo_pattern_t *pattern, - double red, - double green, - double blue, - double alpha) -{ - cairo_color_t color; - - if (pattern->type != CAIRO_PATTERN_TYPE_SOLID) - return FALSE; - - red = _cairo_restrict_value (red, 0.0, 1.0); - green = _cairo_restrict_value (green, 0.0, 1.0); - blue = _cairo_restrict_value (blue, 0.0, 1.0); - alpha = _cairo_restrict_value (alpha, 0.0, 1.0); - - _cairo_color_init_rgba (&color, red, green, blue, alpha); - return _cairo_color_equal (&color, - &((cairo_solid_pattern_t *) pattern)->color); -} - -static cairo_status_t -_cairo_default_context_set_source_rgba (void *abstract_cr, double red, double green, double blue, double alpha) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_pattern_t *pattern; - cairo_status_t status; - - if (_current_source_matches_solid (cr->gstate->source, - red, green, blue, alpha)) - return CAIRO_STATUS_SUCCESS; - - /* push the current pattern to the freed lists */ - _cairo_default_context_set_source (cr, (cairo_pattern_t *) &_cairo_pattern_black); - - pattern = cairo_pattern_create_rgba (red, green, blue, alpha); - if (unlikely (pattern->status)) - return pattern->status; - - status = _cairo_default_context_set_source (cr, pattern); - cairo_pattern_destroy (pattern); - - return status; -} - -static cairo_status_t -_cairo_default_context_set_source_surface (void *abstract_cr, - cairo_surface_t *surface, - double x, - double y) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_pattern_t *pattern; - cairo_matrix_t matrix; - cairo_status_t status; - - /* push the current pattern to the freed lists */ - _cairo_default_context_set_source (cr, (cairo_pattern_t *) &_cairo_pattern_black); - - pattern = cairo_pattern_create_for_surface (surface); - if (unlikely (pattern->status)) - return pattern->status; - - cairo_matrix_init_translate (&matrix, -x, -y); - cairo_pattern_set_matrix (pattern, &matrix); - - status = _cairo_default_context_set_source (cr, pattern); - cairo_pattern_destroy (pattern); - - return status; -} - -static cairo_pattern_t * -_cairo_default_context_get_source (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_source (cr->gstate); -} - -static cairo_status_t -_cairo_default_context_set_tolerance (void *abstract_cr, - double tolerance) -{ - cairo_default_context_t *cr = abstract_cr; - - if (tolerance < CAIRO_TOLERANCE_MINIMUM) - tolerance = CAIRO_TOLERANCE_MINIMUM; - - return _cairo_gstate_set_tolerance (cr->gstate, tolerance); -} - -static cairo_status_t -_cairo_default_context_set_operator (void *abstract_cr, cairo_operator_t op) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_operator (cr->gstate, op); -} - -static cairo_status_t -_cairo_default_context_set_opacity (void *abstract_cr, double opacity) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_opacity (cr->gstate, opacity); -} - -static cairo_status_t -_cairo_default_context_set_antialias (void *abstract_cr, - cairo_antialias_t antialias) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_antialias (cr->gstate, antialias); -} - -static cairo_status_t -_cairo_default_context_set_fill_rule (void *abstract_cr, - cairo_fill_rule_t fill_rule) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_fill_rule (cr->gstate, fill_rule); -} - -static cairo_status_t -_cairo_default_context_set_line_width (void *abstract_cr, - double line_width) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_line_width (cr->gstate, line_width); -} - -static cairo_status_t -_cairo_default_context_set_line_cap (void *abstract_cr, - cairo_line_cap_t line_cap) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_line_cap (cr->gstate, line_cap); -} - -static cairo_status_t -_cairo_default_context_set_line_join (void *abstract_cr, - cairo_line_join_t line_join) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_line_join (cr->gstate, line_join); -} - -static cairo_status_t -_cairo_default_context_set_dash (void *abstract_cr, - const double *dashes, - int num_dashes, - double offset) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_dash (cr->gstate, - dashes, num_dashes, offset); -} - -static cairo_status_t -_cairo_default_context_set_miter_limit (void *abstract_cr, - double limit) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_miter_limit (cr->gstate, limit); -} - -static cairo_antialias_t -_cairo_default_context_get_antialias (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_antialias (cr->gstate); -} - -static void -_cairo_default_context_get_dash (void *abstract_cr, - double *dashes, - int *num_dashes, - double *offset) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_get_dash (cr->gstate, dashes, num_dashes, offset); -} - -static cairo_fill_rule_t -_cairo_default_context_get_fill_rule (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_fill_rule (cr->gstate); -} - -static double -_cairo_default_context_get_line_width (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_line_width (cr->gstate); -} - -static cairo_line_cap_t -_cairo_default_context_get_line_cap (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_line_cap (cr->gstate); -} - -static cairo_line_join_t -_cairo_default_context_get_line_join (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_line_join (cr->gstate); -} - -static double -_cairo_default_context_get_miter_limit (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_miter_limit (cr->gstate); -} - -static cairo_operator_t -_cairo_default_context_get_operator (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_operator (cr->gstate); -} - -static double -_cairo_default_context_get_opacity (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_opacity (cr->gstate); -} - -static double -_cairo_default_context_get_tolerance (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_tolerance (cr->gstate); -} - - -/* Current tranformation matrix */ - -static cairo_status_t -_cairo_default_context_translate (void *abstract_cr, - double tx, - double ty) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_translate (cr->gstate, tx, ty); -} - -static cairo_status_t -_cairo_default_context_scale (void *abstract_cr, - double sx, - double sy) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_scale (cr->gstate, sx, sy); -} - -static cairo_status_t -_cairo_default_context_rotate (void *abstract_cr, - double theta) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_rotate (cr->gstate, theta); -} - -static cairo_status_t -_cairo_default_context_transform (void *abstract_cr, - const cairo_matrix_t *matrix) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_transform (cr->gstate, matrix); -} - -static cairo_status_t -_cairo_default_context_set_matrix (void *abstract_cr, - const cairo_matrix_t *matrix) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_matrix (cr->gstate, matrix); -} - -static cairo_status_t -_cairo_default_context_set_identity_matrix (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_identity_matrix (cr->gstate); - return CAIRO_STATUS_SUCCESS; -} - -static void -_cairo_default_context_get_matrix (void *abstract_cr, - cairo_matrix_t *matrix) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_get_matrix (cr->gstate, matrix); -} - -static void -_cairo_default_context_user_to_device (void *abstract_cr, - double *x, - double *y) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_user_to_device (cr->gstate, x, y); -} - -static void -_cairo_default_context_user_to_device_distance (void *abstract_cr, double *dx, double *dy) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_user_to_device_distance (cr->gstate, dx, dy); -} - -static void -_cairo_default_context_device_to_user (void *abstract_cr, - double *x, - double *y) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_device_to_user (cr->gstate, x, y); -} - -static void -_cairo_default_context_device_to_user_distance (void *abstract_cr, - double *dx, - double *dy) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_device_to_user_distance (cr->gstate, dx, dy); -} - -static void -_cairo_default_context_backend_to_user (void *abstract_cr, - double *x, - double *y) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_backend_to_user (cr->gstate, x, y); -} - -static void -_cairo_default_context_backend_to_user_distance (void *abstract_cr, double *dx, double *dy) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_backend_to_user_distance (cr->gstate, dx, dy); -} - -static void -_cairo_default_context_user_to_backend (void *abstract_cr, - double *x, - double *y) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_user_to_backend (cr->gstate, x, y); -} - -static void -_cairo_default_context_user_to_backend_distance (void *abstract_cr, - double *dx, - double *dy) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_user_to_backend_distance (cr->gstate, dx, dy); -} - -/* Path constructor */ - -static cairo_status_t -_cairo_default_context_new_path (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_path_fixed_fini (cr->path); - _cairo_path_fixed_init (cr->path); - - return CAIRO_STATUS_SUCCESS; -} - -static cairo_status_t -_cairo_default_context_new_sub_path (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_path_fixed_new_sub_path (cr->path); - - return CAIRO_STATUS_SUCCESS; -} - -static cairo_status_t -_cairo_default_context_move_to (void *abstract_cr, double x, double y) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_fixed_t x_fixed, y_fixed; - - _cairo_gstate_user_to_backend (cr->gstate, &x, &y); - x_fixed = _cairo_fixed_from_double (x); - y_fixed = _cairo_fixed_from_double (y); - - return _cairo_path_fixed_move_to (cr->path, x_fixed, y_fixed); -} - -static cairo_status_t -_cairo_default_context_line_to (void *abstract_cr, double x, double y) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_fixed_t x_fixed, y_fixed; - - _cairo_gstate_user_to_backend (cr->gstate, &x, &y); - x_fixed = _cairo_fixed_from_double (x); - y_fixed = _cairo_fixed_from_double (y); - - return _cairo_path_fixed_line_to (cr->path, x_fixed, y_fixed); -} - -static cairo_status_t -_cairo_default_context_curve_to (void *abstract_cr, - double x1, double y1, - double x2, double y2, - double x3, double y3) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_fixed_t x1_fixed, y1_fixed; - cairo_fixed_t x2_fixed, y2_fixed; - cairo_fixed_t x3_fixed, y3_fixed; - - _cairo_gstate_user_to_backend (cr->gstate, &x1, &y1); - _cairo_gstate_user_to_backend (cr->gstate, &x2, &y2); - _cairo_gstate_user_to_backend (cr->gstate, &x3, &y3); - - x1_fixed = _cairo_fixed_from_double (x1); - y1_fixed = _cairo_fixed_from_double (y1); - - x2_fixed = _cairo_fixed_from_double (x2); - y2_fixed = _cairo_fixed_from_double (y2); - - x3_fixed = _cairo_fixed_from_double (x3); - y3_fixed = _cairo_fixed_from_double (y3); - - return _cairo_path_fixed_curve_to (cr->path, - x1_fixed, y1_fixed, - x2_fixed, y2_fixed, - x3_fixed, y3_fixed); -} - -static cairo_status_t -_cairo_default_context_arc (void *abstract_cr, - double xc, double yc, double radius, - double angle1, double angle2, - cairo_bool_t forward) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_status_t status; - - /* Do nothing, successfully, if radius is <= 0 */ - if (radius <= 0.0) { - cairo_fixed_t x_fixed, y_fixed; - - _cairo_gstate_user_to_backend (cr->gstate, &xc, &yc); - x_fixed = _cairo_fixed_from_double (xc); - y_fixed = _cairo_fixed_from_double (yc); - status = _cairo_path_fixed_line_to (cr->path, x_fixed, y_fixed); - if (unlikely (status)) - return status; - - status = _cairo_path_fixed_line_to (cr->path, x_fixed, y_fixed); - if (unlikely (status)) - return status; - - return CAIRO_STATUS_SUCCESS; - } - - status = _cairo_default_context_line_to (cr, - xc + radius * cos (angle1), - yc + radius * sin (angle1)); - - if (unlikely (status)) - return status; - - if (forward) - _cairo_arc_path (&cr->base, xc, yc, radius, angle1, angle2); - else - _cairo_arc_path_negative (&cr->base, xc, yc, radius, angle1, angle2); - - return CAIRO_STATUS_SUCCESS; /* any error will have already been set on cr */ -} - -static cairo_status_t -_cairo_default_context_rel_move_to (void *abstract_cr, double dx, double dy) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_fixed_t dx_fixed, dy_fixed; - - _cairo_gstate_user_to_backend_distance (cr->gstate, &dx, &dy); - - dx_fixed = _cairo_fixed_from_double (dx); - dy_fixed = _cairo_fixed_from_double (dy); - - return _cairo_path_fixed_rel_move_to (cr->path, dx_fixed, dy_fixed); -} - -static cairo_status_t -_cairo_default_context_rel_line_to (void *abstract_cr, double dx, double dy) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_fixed_t dx_fixed, dy_fixed; - - _cairo_gstate_user_to_backend_distance (cr->gstate, &dx, &dy); - - dx_fixed = _cairo_fixed_from_double (dx); - dy_fixed = _cairo_fixed_from_double (dy); - - return _cairo_path_fixed_rel_line_to (cr->path, dx_fixed, dy_fixed); -} - - -static cairo_status_t -_cairo_default_context_rel_curve_to (void *abstract_cr, - double dx1, double dy1, - double dx2, double dy2, - double dx3, double dy3) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_fixed_t dx1_fixed, dy1_fixed; - cairo_fixed_t dx2_fixed, dy2_fixed; - cairo_fixed_t dx3_fixed, dy3_fixed; - - _cairo_gstate_user_to_backend_distance (cr->gstate, &dx1, &dy1); - _cairo_gstate_user_to_backend_distance (cr->gstate, &dx2, &dy2); - _cairo_gstate_user_to_backend_distance (cr->gstate, &dx3, &dy3); - - dx1_fixed = _cairo_fixed_from_double (dx1); - dy1_fixed = _cairo_fixed_from_double (dy1); - - dx2_fixed = _cairo_fixed_from_double (dx2); - dy2_fixed = _cairo_fixed_from_double (dy2); - - dx3_fixed = _cairo_fixed_from_double (dx3); - dy3_fixed = _cairo_fixed_from_double (dy3); - - return _cairo_path_fixed_rel_curve_to (cr->path, - dx1_fixed, dy1_fixed, - dx2_fixed, dy2_fixed, - dx3_fixed, dy3_fixed); -} - -static cairo_status_t -_cairo_default_context_close_path (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_path_fixed_close_path (cr->path); -} - -static cairo_status_t -_cairo_default_context_rectangle (void *abstract_cr, - double x, double y, - double width, double height) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_status_t status; - - status = _cairo_default_context_move_to (cr, x, y); - if (unlikely (status)) - return status; - - status = _cairo_default_context_rel_line_to (cr, width, 0); - if (unlikely (status)) - return status; - - status = _cairo_default_context_rel_line_to (cr, 0, height); - if (unlikely (status)) - return status; - - status = _cairo_default_context_rel_line_to (cr, -width, 0); - if (unlikely (status)) - return status; - - return _cairo_default_context_close_path (cr); -} - -static void -_cairo_default_context_path_extents (void *abstract_cr, - double *x1, - double *y1, - double *x2, - double *y2) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_path_extents (cr->gstate, - cr->path, - x1, y1, x2, y2); -} - -static cairo_bool_t -_cairo_default_context_has_current_point (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return cr->path->has_current_point; -} - -static cairo_bool_t -_cairo_default_context_get_current_point (void *abstract_cr, - double *x, - double *y) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_fixed_t x_fixed, y_fixed; - - if (_cairo_path_fixed_get_current_point (cr->path, &x_fixed, &y_fixed)) - { - *x = _cairo_fixed_to_double (x_fixed); - *y = _cairo_fixed_to_double (y_fixed); - _cairo_gstate_backend_to_user (cr->gstate, x, y); - - return TRUE; - } - else - { - return FALSE; - } -} - -static cairo_path_t * -_cairo_default_context_copy_path (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_path_create (cr->path, &cr->base); -} - -static cairo_path_t * -_cairo_default_context_copy_path_flat (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_path_create_flat (cr->path, &cr->base); -} - -static cairo_status_t -_cairo_default_context_append_path (void *abstract_cr, - const cairo_path_t *path) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_path_append_to_context (path, &cr->base); -} - -static cairo_status_t -_cairo_default_context_paint (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_paint (cr->gstate); -} - -static cairo_status_t -_cairo_default_context_paint_with_alpha (void *abstract_cr, - double alpha) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_solid_pattern_t pattern; - cairo_status_t status; - cairo_color_t color; - - if (CAIRO_ALPHA_IS_OPAQUE (alpha)) - return _cairo_gstate_paint (cr->gstate); - - if (CAIRO_ALPHA_IS_ZERO (alpha) && - _cairo_operator_bounded_by_mask (cr->gstate->op)) { - return CAIRO_STATUS_SUCCESS; - } - - _cairo_color_init_rgba (&color, 0., 0., 0., alpha); - _cairo_pattern_init_solid (&pattern, &color); - - status = _cairo_gstate_mask (cr->gstate, &pattern.base); - _cairo_pattern_fini (&pattern.base); - - return status; -} - -static cairo_status_t -_cairo_default_context_mask (void *abstract_cr, - cairo_pattern_t *mask) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_mask (cr->gstate, mask); -} - -static cairo_status_t -_cairo_default_context_stroke_preserve (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_stroke (cr->gstate, cr->path); -} - -static cairo_status_t -_cairo_default_context_stroke (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_status_t status; - - status = _cairo_gstate_stroke (cr->gstate, cr->path); - if (unlikely (status)) - return status; - - return _cairo_default_context_new_path (cr); -} - -static cairo_status_t -_cairo_default_context_in_stroke (void *abstract_cr, - double x, double y, - cairo_bool_t *inside) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_in_stroke (cr->gstate, - cr->path, - x, y, - inside); -} - -static cairo_status_t -_cairo_default_context_stroke_extents (void *abstract_cr, - double *x1, double *y1, double *x2, double *y2) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_stroke_extents (cr->gstate, - cr->path, - x1, y1, x2, y2); -} - -static cairo_status_t -_cairo_default_context_fill_preserve (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_fill (cr->gstate, cr->path); -} - -static cairo_status_t -_cairo_default_context_fill (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_status_t status; - - status = _cairo_gstate_fill (cr->gstate, cr->path); - if (unlikely (status)) - return status; - - return _cairo_default_context_new_path (cr); -} - -static cairo_status_t -_cairo_default_context_in_fill (void *abstract_cr, - double x, double y, - cairo_bool_t *inside) -{ - cairo_default_context_t *cr = abstract_cr; - - *inside = _cairo_gstate_in_fill (cr->gstate, - cr->path, - x, y); - return CAIRO_STATUS_SUCCESS; -} - -static cairo_status_t -_cairo_default_context_fill_extents (void *abstract_cr, - double *x1, double *y1, double *x2, double *y2) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_fill_extents (cr->gstate, - cr->path, - x1, y1, x2, y2); -} - -static cairo_status_t -_cairo_default_context_clip_preserve (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_clip (cr->gstate, cr->path); -} - -static cairo_status_t -_cairo_default_context_clip (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_status_t status; - - status = _cairo_gstate_clip (cr->gstate, cr->path); - if (unlikely (status)) - return status; - - return _cairo_default_context_new_path (cr); -} - -static cairo_status_t -_cairo_default_context_in_clip (void *abstract_cr, - double x, double y, - cairo_bool_t *inside) -{ - cairo_default_context_t *cr = abstract_cr; - - *inside = _cairo_gstate_in_clip (cr->gstate, x, y); - return CAIRO_STATUS_SUCCESS; -} - -static cairo_status_t -_cairo_default_context_reset_clip (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_reset_clip (cr->gstate); -} - -static cairo_status_t -_cairo_default_context_clip_extents (void *abstract_cr, - double *x1, double *y1, double *x2, double *y2) -{ - cairo_default_context_t *cr = abstract_cr; - - if (! _cairo_gstate_clip_extents (cr->gstate, x1, y1, x2, y2)) { - *x1 = -INFINITY; - *y1 = -INFINITY; - *x2 = +INFINITY; - *y2 = +INFINITY; - } - - return CAIRO_STATUS_SUCCESS; -} - -static cairo_rectangle_list_t * -_cairo_default_context_copy_clip_rectangle_list (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_copy_clip_rectangle_list (cr->gstate); -} - -static cairo_status_t -_cairo_default_context_copy_page (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_copy_page (cr->gstate); -} - -static cairo_status_t -_cairo_default_context_tag_begin (void *abstract_cr, - const char *tag_name, const char *attributes) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_tag_begin (cr->gstate, tag_name, attributes); -} - -static cairo_status_t -_cairo_default_context_tag_end (void *abstract_cr, - const char *tag_name) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_tag_end (cr->gstate, tag_name); -} - -static cairo_status_t -_cairo_default_context_show_page (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_show_page (cr->gstate); -} - -static cairo_status_t -_cairo_default_context_set_font_face (void *abstract_cr, - cairo_font_face_t *font_face) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_font_face (cr->gstate, font_face); -} - -static cairo_font_face_t * -_cairo_default_context_get_font_face (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_font_face_t *font_face; - cairo_status_t status; - - status = _cairo_gstate_get_font_face (cr->gstate, &font_face); - if (unlikely (status)) { - _cairo_error_throw (CAIRO_STATUS_NO_MEMORY); - return (cairo_font_face_t *) &_cairo_font_face_nil; - } - - return font_face; -} - -static cairo_status_t -_cairo_default_context_font_extents (void *abstract_cr, - cairo_font_extents_t *extents) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_get_font_extents (cr->gstate, extents); -} - -static cairo_status_t -_cairo_default_context_set_font_size (void *abstract_cr, - double size) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_font_size (cr->gstate, size); -} - -static cairo_status_t -_cairo_default_context_set_font_matrix (void *abstract_cr, - const cairo_matrix_t *matrix) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_set_font_matrix (cr->gstate, matrix); -} - -static void -_cairo_default_context_get_font_matrix (void *abstract_cr, - cairo_matrix_t *matrix) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_get_font_matrix (cr->gstate, matrix); -} - -static cairo_status_t -_cairo_default_context_set_font_options (void *abstract_cr, - const cairo_font_options_t *options) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_set_font_options (cr->gstate, options); - return CAIRO_STATUS_SUCCESS; -} - -static void -_cairo_default_context_get_font_options (void *abstract_cr, - cairo_font_options_t *options) -{ - cairo_default_context_t *cr = abstract_cr; - - _cairo_gstate_get_font_options (cr->gstate, options); -} - -static cairo_status_t -_cairo_default_context_set_scaled_font (void *abstract_cr, - cairo_scaled_font_t *scaled_font) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_bool_t was_previous; - cairo_status_t status; - - if (scaled_font == cr->gstate->scaled_font) - return CAIRO_STATUS_SUCCESS; - - was_previous = scaled_font == cr->gstate->previous_scaled_font; - - status = _cairo_gstate_set_font_face (cr->gstate, scaled_font->font_face); - if (unlikely (status)) - return status; - - status = _cairo_gstate_set_font_matrix (cr->gstate, &scaled_font->font_matrix); - if (unlikely (status)) - return status; - - _cairo_gstate_set_font_options (cr->gstate, &scaled_font->options); - - if (was_previous) - cr->gstate->scaled_font = cairo_scaled_font_reference (scaled_font); - - return CAIRO_STATUS_SUCCESS; -} - -static cairo_scaled_font_t * -_cairo_default_context_get_scaled_font (void *abstract_cr) -{ - cairo_default_context_t *cr = abstract_cr; - cairo_scaled_font_t *scaled_font; - cairo_status_t status; - - status = _cairo_gstate_get_scaled_font (cr->gstate, &scaled_font); - if (unlikely (status)) - return _cairo_scaled_font_create_in_error (status); - - return scaled_font; -} - -static cairo_status_t -_cairo_default_context_glyphs (void *abstract_cr, - const cairo_glyph_t *glyphs, - int num_glyphs, - cairo_glyph_text_info_t *info) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_show_text_glyphs (cr->gstate, glyphs, num_glyphs, info); -} - -static cairo_status_t -_cairo_default_context_glyph_path (void *abstract_cr, - const cairo_glyph_t *glyphs, - int num_glyphs) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_glyph_path (cr->gstate, - glyphs, num_glyphs, - cr->path); -} - -static cairo_status_t -_cairo_default_context_glyph_extents (void *abstract_cr, - const cairo_glyph_t *glyphs, - int num_glyphs, - cairo_text_extents_t *extents) -{ - cairo_default_context_t *cr = abstract_cr; - - return _cairo_gstate_glyph_extents (cr->gstate, glyphs, num_glyphs, extents); -} - -static const cairo_backend_t _cairo_default_context_backend = { - CAIRO_TYPE_DEFAULT, - _cairo_default_context_destroy, - - _cairo_default_context_get_original_target, - _cairo_default_context_get_current_target, - - _cairo_default_context_save, - _cairo_default_context_restore, - - _cairo_default_context_push_group, - _cairo_default_context_pop_group, - - _cairo_default_context_set_source_rgba, - _cairo_default_context_set_source_surface, - _cairo_default_context_set_source, - _cairo_default_context_get_source, - - _cairo_default_context_set_antialias, - _cairo_default_context_set_dash, - _cairo_default_context_set_fill_rule, - _cairo_default_context_set_line_cap, - _cairo_default_context_set_line_join, - _cairo_default_context_set_line_width, - _cairo_default_context_set_miter_limit, - _cairo_default_context_set_opacity, - _cairo_default_context_set_operator, - _cairo_default_context_set_tolerance, - _cairo_default_context_get_antialias, - _cairo_default_context_get_dash, - _cairo_default_context_get_fill_rule, - _cairo_default_context_get_line_cap, - _cairo_default_context_get_line_join, - _cairo_default_context_get_line_width, - _cairo_default_context_get_miter_limit, - _cairo_default_context_get_opacity, - _cairo_default_context_get_operator, - _cairo_default_context_get_tolerance, - - _cairo_default_context_translate, - _cairo_default_context_scale, - _cairo_default_context_rotate, - _cairo_default_context_transform, - _cairo_default_context_set_matrix, - _cairo_default_context_set_identity_matrix, - _cairo_default_context_get_matrix, - - _cairo_default_context_user_to_device, - _cairo_default_context_user_to_device_distance, - _cairo_default_context_device_to_user, - _cairo_default_context_device_to_user_distance, - - _cairo_default_context_user_to_backend, - _cairo_default_context_user_to_backend_distance, - _cairo_default_context_backend_to_user, - _cairo_default_context_backend_to_user_distance, - - _cairo_default_context_new_path, - _cairo_default_context_new_sub_path, - _cairo_default_context_move_to, - _cairo_default_context_rel_move_to, - _cairo_default_context_line_to, - _cairo_default_context_rel_line_to, - _cairo_default_context_curve_to, - _cairo_default_context_rel_curve_to, - NULL, /* arc-to */ - NULL, /* rel-arc-to */ - _cairo_default_context_close_path, - _cairo_default_context_arc, - _cairo_default_context_rectangle, - _cairo_default_context_path_extents, - _cairo_default_context_has_current_point, - _cairo_default_context_get_current_point, - _cairo_default_context_copy_path, - _cairo_default_context_copy_path_flat, - _cairo_default_context_append_path, - - NULL, /* stroke-to-path */ - - _cairo_default_context_clip, - _cairo_default_context_clip_preserve, - _cairo_default_context_in_clip, - _cairo_default_context_clip_extents, - _cairo_default_context_reset_clip, - _cairo_default_context_copy_clip_rectangle_list, - - _cairo_default_context_paint, - _cairo_default_context_paint_with_alpha, - _cairo_default_context_mask, - - _cairo_default_context_stroke, - _cairo_default_context_stroke_preserve, - _cairo_default_context_in_stroke, - _cairo_default_context_stroke_extents, - - _cairo_default_context_fill, - _cairo_default_context_fill_preserve, - _cairo_default_context_in_fill, - _cairo_default_context_fill_extents, - - _cairo_default_context_set_font_face, - _cairo_default_context_get_font_face, - _cairo_default_context_set_font_size, - _cairo_default_context_set_font_matrix, - _cairo_default_context_get_font_matrix, - _cairo_default_context_set_font_options, - _cairo_default_context_get_font_options, - _cairo_default_context_set_scaled_font, - _cairo_default_context_get_scaled_font, - _cairo_default_context_font_extents, - - _cairo_default_context_glyphs, - _cairo_default_context_glyph_path, - _cairo_default_context_glyph_extents, - - _cairo_default_context_copy_page, - _cairo_default_context_show_page, - - _cairo_default_context_tag_begin, - _cairo_default_context_tag_end, -}; - -cairo_status_t -_cairo_default_context_init (cairo_default_context_t *cr, void *target) -{ - _cairo_init (&cr->base, &_cairo_default_context_backend); - _cairo_path_fixed_init (cr->path); - - cr->gstate = &cr->gstate_tail[0]; - cr->gstate_freelist = &cr->gstate_tail[1]; - cr->gstate_tail[1].next = NULL; - - return _cairo_gstate_init (cr->gstate, target); -} - -cairo_t * -_cairo_default_context_create (void *target) -{ - cairo_default_context_t *cr; - cairo_status_t status; - - cr = _freed_pool_get (&context_pool); - if (unlikely (cr == NULL)) { - cr = _cairo_malloc (sizeof (cairo_default_context_t)); - if (unlikely (cr == NULL)) - return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY)); - } - - status = _cairo_default_context_init (cr, target); - if (unlikely (status)) { - _freed_pool_put (&context_pool, cr); - return _cairo_create_in_error (status); - } - - return &cr->base; -} |