/* -*- 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 * Chris Wilson */ #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); /* 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_similar_solid (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); /* 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_matrix_t group_matrix, device_transform_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); 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); /* Transform by group_matrix centered around device_transform so that when * we call _cairo_gstate_copy_transformed_pattern the result is a pattern * with a matrix equivalent to the device_transform of group_surface. */ if (_cairo_surface_has_device_transform (group_surface)) { cairo_pattern_set_matrix (group_pattern, &group_surface->device_transform); _cairo_pattern_transform (group_pattern, &group_matrix); _cairo_pattern_transform (group_pattern, &group_surface->device_transform_inverse); } else { 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_matrix_multiply (&device_transform_matrix, &_cairo_gstate_get_target (cr->gstate)->device_transform, &group_surface->device_transform_inverse); _cairo_path_fixed_transform (cr->path, &device_transform_matrix); 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_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_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 = 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; }