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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*************************************************************************/
/* image_loader_svg.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "image_loader_svg.h"
#include "core/os/memory.h"
#include "core/variant/variant.h"
#include <thorvg.h>
void ImageLoaderSVG::_replace_color_property(const String &p_prefix, String &r_string) {
// Replace colors in the SVG based on what is configured in `replace_colors`.
// Used to change the colors of editor icons based on the used theme.
// The strings being replaced are typically of the form:
// fill="#5abbef"
// But can also be 3-letter codes, include alpha, be "none" or a named color
// string ("blue"). So we convert to Godot Color to compare with `replace_colors`.
const int prefix_len = p_prefix.length();
int pos = r_string.find(p_prefix);
while (pos != -1) {
pos += prefix_len; // Skip prefix.
int end_pos = r_string.find("\"", pos);
ERR_FAIL_COND_MSG(end_pos == -1, vformat("Malformed SVG string after property \"%s\".", p_prefix));
const String color_code = r_string.substr(pos, end_pos - pos);
if (color_code != "none" && !color_code.begins_with("url(")) {
const Color color = Color(color_code); // Handles both HTML codes and named colors.
if (replace_colors.has(color)) {
r_string = r_string.left(pos) + "#" + replace_colors[color].operator Color().to_html(false) + r_string.substr(end_pos);
}
}
// Search for other occurrences.
pos = r_string.find(p_prefix, pos);
}
}
void ImageLoaderSVG::create_image_from_string(Ref<Image> p_image, String p_string, float p_scale, bool p_upsample, bool p_convert_color) {
ERR_FAIL_COND(Math::is_zero_approx(p_scale));
if (p_convert_color) {
_replace_color_property("stop-color=\"", p_string);
_replace_color_property("fill=\"", p_string);
_replace_color_property("stroke=\"", p_string);
}
std::unique_ptr<tvg::Picture> picture = tvg::Picture::gen();
PackedByteArray bytes = p_string.to_utf8_buffer();
tvg::Result result = picture->load((const char *)bytes.ptr(), bytes.size(), "svg", true);
if (result != tvg::Result::Success) {
return;
}
float fw, fh;
picture->size(&fw, &fh);
uint32_t width = MIN(fw * p_scale, 16 * 1024);
uint32_t height = MIN(fh * p_scale, 16 * 1024);
picture->size(width, height);
std::unique_ptr<tvg::SwCanvas> sw_canvas = tvg::SwCanvas::gen();
// Note: memalloc here, be sure to memfree before any return.
uint32_t *buffer = (uint32_t *)memalloc(sizeof(uint32_t) * width * height);
tvg::Result res = sw_canvas->target(buffer, width, width, height, tvg::SwCanvas::ARGB8888_STRAIGHT);
if (res != tvg::Result::Success) {
memfree(buffer);
ERR_FAIL_MSG("ImageLoaderSVG can't create image.");
}
res = sw_canvas->push(move(picture));
if (res != tvg::Result::Success) {
memfree(buffer);
ERR_FAIL_MSG("ImageLoaderSVG can't create image.");
}
res = sw_canvas->draw();
if (res != tvg::Result::Success) {
memfree(buffer);
ERR_FAIL_MSG("ImageLoaderSVG can't create image.");
}
res = sw_canvas->sync();
if (res != tvg::Result::Success) {
memfree(buffer);
ERR_FAIL_MSG("ImageLoaderSVG can't create image.");
}
Vector<uint8_t> image;
image.resize(width * height * sizeof(uint32_t));
for (uint32_t y = 0; y < height; y++) {
for (uint32_t x = 0; x < width; x++) {
uint32_t n = buffer[y * width + x];
const size_t offset = sizeof(uint32_t) * width * y + sizeof(uint32_t) * x;
image.write[offset + 0] = (n >> 16) & 0xff;
image.write[offset + 1] = (n >> 8) & 0xff;
image.write[offset + 2] = n & 0xff;
image.write[offset + 3] = (n >> 24) & 0xff;
}
}
res = sw_canvas->clear(true);
memfree(buffer);
p_image->create(width, height, false, Image::FORMAT_RGBA8, image);
}
void ImageLoaderSVG::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("svg");
}
Error ImageLoaderSVG::load_image(Ref<Image> p_image, FileAccess *p_fileaccess, bool p_force_linear, float p_scale) {
String svg = p_fileaccess->get_as_utf8_string();
create_image_from_string(p_image, svg, p_scale, false, false);
ERR_FAIL_COND_V(p_image->is_empty(), FAILED);
if (p_force_linear) {
p_image->srgb_to_linear();
}
return OK;
}
|