1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_SP_GRADIENT_CHEMISTRY_H
#define SEEN_SP_GRADIENT_CHEMISTRY_H
/*
* Various utility methods for gradients
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
* bulia byak <buliabyak@users.sf.net>
* Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
* Jon A. Cruz <jon@joncruz.org>
*
* Copyright (C) 2010 Authors
* Copyright (C) 2007 Johan Engelen
* Copyright (C) 2001-2002 Lauris Kaplinski
* Copyright (C) 2001 Ximian, Inc.
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "object/sp-gradient.h"
class SPCSSAttr;
class SPItem;
class SPGradient;
class SPDesktop;
/**
* Either normalizes given gradient to vector, or returns fresh normalized
* vector - in latter case, original gradient is flattened and stops cleared.
* No transrefing - i.e. caller shouldn't hold reference to original and
* does not get one to new automatically (doc holds ref of every object anyways)
*/
SPGradient *sp_gradient_ensure_vector_normalized(SPGradient *gradient);
/**
* Sets item fill or stroke to the gradient of the specified type with given vector, creating
* new private gradient, if needed.
* gr has to be a normalized vector.
*/
SPGradient *sp_item_set_gradient(SPItem *item, SPGradient *gr, SPGradientType type, Inkscape::PaintTarget fill_or_stroke);
/*
* Get default normalized gradient vector of document, create if there is none
*/
SPGradient *sp_document_default_gradient_vector( SPDocument *document, SPColor const &color, bool singleStop );
/**
* Return the preferred vector for \a o, made from (in order of preference) its current vector,
* current fill or stroke color, or from desktop style if \a o is NULL or doesn't have style.
*/
SPGradient *sp_gradient_vector_for_object( SPDocument *doc, SPDesktop *desktop, SPObject *o, Inkscape::PaintTarget fill_or_stroke, bool singleStop = false );
void sp_object_ensure_fill_gradient_normalized (SPObject *object);
void sp_object_ensure_stroke_gradient_normalized (SPObject *object);
SPGradient *sp_gradient_convert_to_userspace (SPGradient *gr, SPItem *item, const char *property);
SPGradient *sp_gradient_reset_to_userspace (SPGradient *gr, SPItem *item);
SPGradient *sp_gradient_fork_vector_if_necessary (SPGradient *gr);
SPGradient *sp_gradient_get_forked_vector_if_necessary(SPGradient *gradient, bool force_vector);
SPStop* sp_last_stop(SPGradient *gradient);
SPStop* sp_get_stop_i(SPGradient *gradient, unsigned int i);
unsigned int sp_number_of_stops(SPGradient const *gradient);
unsigned int sp_number_of_stops_before_stop(SPGradient const *gradient, SPStop *target);
guint32 average_color(guint32 c1, guint32 c2, double p = 0.5);
SPStop *sp_vector_add_stop(SPGradient *vector, SPStop* prev_stop, SPStop* next_stop, gfloat offset);
void sp_gradient_transform_multiply(SPGradient *gradient, Geom::Affine postmul, bool set);
void sp_gradient_reverse_selected_gradients(SPDesktop *desktop);
void sp_gradient_invert_selected_gradients(SPDesktop *desktop, Inkscape::PaintTarget fill_or_stroke);
void sp_gradient_unset_swatch(SPDesktop *desktop, std::string id);
/**
* Fetches either the fill or the stroke gradient from the given item.
*
* @param fill_or_stroke the gradient type (fill/stroke) to get.
* @return the specified gradient if set, null otherwise.
*/
SPGradient *getGradient(SPItem *item, Inkscape::PaintTarget fill_or_stroke);
void sp_item_gradient_set_coords(SPItem *item, GrPointType point_type, unsigned int point_i, Geom::Point p_desk, Inkscape::PaintTarget fill_or_stroke, bool write_repr, bool scale);
/**
* Returns the position of point point_type of the gradient applied to item (either fill_or_stroke),
* in desktop coordinates.
*/
Geom::Point getGradientCoords(SPItem *item, GrPointType point_type, unsigned int point_i, Inkscape::PaintTarget fill_or_stroke);
SPGradient *sp_item_gradient_get_vector(SPItem *item, Inkscape::PaintTarget fill_or_stroke);
SPGradientSpread sp_item_gradient_get_spread(SPItem *item, Inkscape::PaintTarget fill_or_stroke);
void sp_item_gradient_stop_set_style(SPItem *item, GrPointType point_type, unsigned int point_i, Inkscape::PaintTarget fill_or_stroke, SPCSSAttr *stop);
guint32 sp_item_gradient_stop_query_style(SPItem *item, GrPointType point_type, unsigned int point_i, Inkscape::PaintTarget fill_or_stroke);
void sp_item_gradient_edit_stop(SPItem *item, GrPointType point_type, unsigned int point_i, Inkscape::PaintTarget fill_or_stroke);
void sp_item_gradient_reverse_vector(SPItem *item, Inkscape::PaintTarget fill_or_stroke);
void sp_item_gradient_invert_vector_color(SPItem *item, Inkscape::PaintTarget fill_or_stroke);
#endif // SEEN_SP_GRADIENT_CHEMISTRY_H
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
|
