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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
<?php
/**
* @copyright Copyright (c) 2016 Julius Härtl <jus@bitgrid.net>
*
* @author Jan-Christoph Borchardt <hey@jancborchardt.net>
* @author Julius Haertl <jus@bitgrid.net>
* @author Julius Härtl <jus@bitgrid.net>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Theming;
use Imagick;
use ImagickPixel;
use OCP\App\AppPathNotFoundException;
use OCP\Files\SimpleFS\ISimpleFile;
class IconBuilder {
/** @var ThemingDefaults */
private $themingDefaults;
/** @var Util */
private $util;
/** @var ImageManager */
private $imageManager;
/**
* IconBuilder constructor.
*
* @param ThemingDefaults $themingDefaults
* @param Util $util
* @param ImageManager $imageManager
*/
public function __construct(
ThemingDefaults $themingDefaults,
Util $util,
ImageManager $imageManager
) {
$this->themingDefaults = $themingDefaults;
$this->util = $util;
$this->imageManager = $imageManager;
}
/**
* @param $app string app name
* @return string|false image blob
*/
public function getFavicon($app) {
if (!$this->imageManager->shouldReplaceIcons()) {
return false;
}
try {
$favicon = new Imagick();
$favicon->setFormat("ico");
$icon = $this->renderAppIcon($app, 128);
if ($icon === false) {
return false;
}
$icon->setImageFormat("png32");
$clone = clone $icon;
$clone->scaleImage(16,0);
$favicon->addImage($clone);
$clone = clone $icon;
$clone->scaleImage(32,0);
$favicon->addImage($clone);
$clone = clone $icon;
$clone->scaleImage(64,0);
$favicon->addImage($clone);
$clone = clone $icon;
$clone->scaleImage(128,0);
$favicon->addImage($clone);
$data = $favicon->getImagesBlob();
$favicon->destroy();
$icon->destroy();
$clone->destroy();
return $data;
} catch (\ImagickException $e) {
return false;
}
}
/**
* @param $app string app name
* @return string|false image blob
*/
public function getTouchIcon($app) {
try {
$icon = $this->renderAppIcon($app, 512);
if ($icon === false) {
return false;
}
$icon->setImageFormat("png32");
$data = $icon->getImageBlob();
$icon->destroy();
return $data;
} catch (\ImagickException $e) {
return false;
}
}
/**
* Render app icon on themed background color
* fallback to logo
*
* @param $app string app name
* @param $size int size of the icon in px
* @return Imagick|false
*/
public function renderAppIcon($app, $size) {
$appIcon = $this->util->getAppIcon($app);
if($appIcon === false) {
return false;
}
if ($appIcon instanceof ISimpleFile) {
$appIconContent = $appIcon->getContent();
$mime = $appIcon->getMimeType();
} else {
$appIconContent = file_get_contents($appIcon);
$mime = mime_content_type($appIcon);
}
if($appIconContent === false || $appIconContent === "") {
return false;
}
$color = $this->themingDefaults->getColorPrimary();
// generate background image with rounded corners
$background = '<?xml version="1.0" encoding="UTF-8"?>' .
'<svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:cc="http://creativecommons.org/ns#" width="512" height="512" xmlns:xlink="http://www.w3.org/1999/xlink">' .
'<rect x="0" y="0" rx="100" ry="100" width="512" height="512" style="fill:' . $color . ';" />' .
'</svg>';
// resize svg magic as this seems broken in Imagemagick
if($mime === "image/svg+xml" || substr($appIconContent, 0, 4) === "<svg") {
if(substr($appIconContent, 0, 5) !== "<?xml") {
$svg = "<?xml version=\"1.0\"?>".$appIconContent;
} else {
$svg = $appIconContent;
}
$tmp = new Imagick();
$tmp->readImageBlob($svg);
$x = $tmp->getImageWidth();
$y = $tmp->getImageHeight();
$res = $tmp->getImageResolution();
$tmp->destroy();
if($x>$y) {
$max = $x;
} else {
$max = $y;
}
// convert svg to resized image
$appIconFile = new Imagick();
$resX = (int)(512 * $res['x'] / $max * 2.53);
$resY = (int)(512 * $res['y'] / $max * 2.53);
$appIconFile->setResolution($resX, $resY);
$appIconFile->setBackgroundColor(new ImagickPixel('transparent'));
$appIconFile->readImageBlob($svg);
/**
* invert app icons for bright primary colors
* the default nextcloud logo will not be inverted to black
*/
if ($this->util->invertTextColor($color)
&& !$appIcon instanceof ISimpleFile
&& $app !== "core"
) {
$appIconFile->negateImage(false);
}
$appIconFile->scaleImage(512, 512, true);
} else {
$appIconFile = new Imagick();
$appIconFile->setBackgroundColor(new ImagickPixel('transparent'));
$appIconFile->readImageBlob($appIconContent);
$appIconFile->scaleImage(512, 512, true);
}
// offset for icon positioning
$border_w = (int)($appIconFile->getImageWidth() * 0.05);
$border_h = (int)($appIconFile->getImageHeight() * 0.05);
$innerWidth = (int)($appIconFile->getImageWidth() - $border_w * 2);
$innerHeight = (int)($appIconFile->getImageHeight() - $border_h * 2);
$appIconFile->adaptiveResizeImage($innerWidth, $innerHeight);
// center icon
$offset_w = 512 / 2 - $innerWidth / 2;
$offset_h = 512 / 2 - $innerHeight / 2;
$finalIconFile = new Imagick();
$finalIconFile->setBackgroundColor(new ImagickPixel('transparent'));
$finalIconFile->readImageBlob($background);
$finalIconFile->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT);
$finalIconFile->setImageArtifact('compose:args', "1,0,-0.5,0.5");
$finalIconFile->compositeImage($appIconFile, Imagick::COMPOSITE_ATOP, $offset_w, $offset_h);
$finalIconFile->setImageFormat('png24');
if (defined("Imagick::INTERPOLATE_BICUBIC") === true) {
$filter = Imagick::INTERPOLATE_BICUBIC;
} else {
$filter = Imagick::FILTER_LANCZOS;
}
$finalIconFile->resizeImage($size, $size, $filter, 1, false);
$appIconFile->destroy();
return $finalIconFile;
}
public function colorSvg($app, $image) {
try {
$imageFile = $this->util->getAppImage($app, $image);
} catch (AppPathNotFoundException $e) {
return false;
}
$svg = file_get_contents($imageFile);
if ($svg !== false && $svg !== "") {
$color = $this->util->elementColor($this->themingDefaults->getColorPrimary());
$svg = $this->util->colorizeSvg($svg, $color);
return $svg;
} else {
return false;
}
}
}
|
