|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* responsive-images-css |
|
5
|
|
|
* |
|
6
|
|
|
* @category Jkphl |
|
7
|
|
|
* @package Jkphl\Respimgcss |
|
8
|
|
|
* @subpackage Jkphl\Respimgcss\Domain\Service |
|
9
|
|
|
* @author Joschi Kuphal <[email protected]> / @jkphl |
|
10
|
|
|
* @copyright Copyright © 2018 Joschi Kuphal <[email protected]> / @jkphl |
|
11
|
|
|
* @license http://opensource.org/licenses/MIT The MIT License (MIT) |
|
12
|
|
|
*/ |
|
13
|
|
|
|
|
14
|
|
|
/*********************************************************************************** |
|
15
|
|
|
* The MIT License (MIT) |
|
16
|
|
|
* |
|
17
|
|
|
* Copyright © 2018 Joschi Kuphal <[email protected]> / @jkphl |
|
18
|
|
|
* |
|
19
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy of |
|
20
|
|
|
* this software and associated documentation files (the "Software"), to deal in |
|
21
|
|
|
* the Software without restriction, including without limitation the rights to |
|
22
|
|
|
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of |
|
23
|
|
|
* the Software, and to permit persons to whom the Software is furnished to do so, |
|
24
|
|
|
* subject to the following conditions: |
|
25
|
|
|
* |
|
26
|
|
|
* The above copyright notice and this permission notice shall be included in all |
|
27
|
|
|
* copies or substantial portions of the Software. |
|
28
|
|
|
* |
|
29
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
30
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS |
|
31
|
|
|
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR |
|
32
|
|
|
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER |
|
33
|
|
|
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
|
34
|
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
|
35
|
|
|
***********************************************************************************/ |
|
36
|
|
|
|
|
37
|
|
|
namespace Jkphl\Respimgcss\Domain\Service; |
|
38
|
|
|
|
|
39
|
|
|
use Jkphl\Respimgcss\Domain\Contract\CssMinMaxMediaConditionInterface; |
|
40
|
|
|
use Jkphl\Respimgcss\Domain\Contract\CssRulesetInterface; |
|
41
|
|
|
use Jkphl\Respimgcss\Domain\Contract\ImageCandidateInterface; |
|
42
|
|
|
use Jkphl\Respimgcss\Domain\Model\Css\ResolutionMediaCondition; |
|
43
|
|
|
use Jkphl\Respimgcss\Domain\Model\Css\Rule; |
|
44
|
|
|
use Jkphl\Respimgcss\Domain\Model\Css\WidthMediaCondition; |
|
45
|
|
|
use Jkphl\Respimgcss\Tests\Domain\Mock\AbsoluteLength; |
|
46
|
|
|
|
|
47
|
|
|
/** |
|
48
|
|
|
* Pixel density CSS ruleset compiler service |
|
49
|
|
|
* |
|
50
|
|
|
* @package Jkphl\Respimgcss |
|
51
|
|
|
* @subpackage Jkphl\Respimgcss\Domain |
|
52
|
|
|
*/ |
|
53
|
|
|
class WidthCssRulesetCompilerService extends AbstractCssRulesetCompilerService |
|
54
|
|
|
{ |
|
55
|
|
|
/** |
|
56
|
|
|
* Compile a CSS ruleset based on the registered breakpoints, image candidates and a given density |
|
57
|
|
|
* |
|
58
|
|
|
* @param float $density Density |
|
59
|
|
|
* |
|
60
|
|
|
* @return CssRulesetInterface CSS ruleset |
|
61
|
|
|
*/ |
|
62
|
3 |
|
public function compile(float $density): CssRulesetInterface |
|
63
|
|
|
{ |
|
64
|
|
|
// Initialize a virtual breakpoint |
|
65
|
3 |
|
$lastImageCandidateWidth = 0; |
|
66
|
|
|
|
|
67
|
|
|
// Run through and test all image candidates |
|
68
|
|
|
/** @var ImageCandidateInterface $imageCandidate */ |
|
69
|
3 |
|
foreach ($this->imageCandidates as $imageCandidate) { |
|
70
|
3 |
|
if ($lastImageCandidateWidth || ($density == 1)) { |
|
71
|
3 |
|
$this->cssRuleset->appendRule( |
|
72
|
3 |
|
$this->createImageCandidateRule($imageCandidate, $density, $lastImageCandidateWidth) |
|
73
|
|
|
); |
|
74
|
|
|
} |
|
75
|
3 |
|
$lastImageCandidateWidth = $imageCandidate->getValue(); |
|
76
|
|
|
} |
|
77
|
|
|
|
|
78
|
3 |
|
return $this->cssRuleset; |
|
79
|
|
|
} |
|
80
|
|
|
|
|
81
|
|
|
/** |
|
82
|
|
|
* Create a width CSS rule for a particular image candidate |
|
83
|
|
|
* |
|
84
|
|
|
* @param ImageCandidateInterface $imageCandidate Image candidate |
|
85
|
|
|
* @param float $density Density |
|
86
|
|
|
* @param int $imageCandidateWidth Image candidate width |
|
87
|
|
|
* |
|
88
|
|
|
* @return Rule Density CSS rule |
|
89
|
|
|
*/ |
|
90
|
3 |
|
protected function createImageCandidateRule( |
|
91
|
|
|
ImageCandidateInterface $imageCandidate, |
|
92
|
|
|
float $density, |
|
93
|
|
|
int $imageCandidateWidth |
|
94
|
|
|
): Rule { |
|
95
|
3 |
|
$rule = new Rule($imageCandidate); |
|
96
|
3 |
|
$rule = $this->addWidthCondition($rule, $imageCandidateWidth, $density); |
|
97
|
|
|
|
|
98
|
3 |
|
return $this->addDensityCondition($rule, $density); |
|
99
|
|
|
} |
|
100
|
|
|
|
|
101
|
|
|
/** |
|
102
|
|
|
* Add a width condition to a CSS rule |
|
103
|
|
|
* |
|
104
|
|
|
* @param Rule $rule CSS rule |
|
105
|
|
|
* @param int $imageCandidateWidth Image candidate width in pixels |
|
106
|
|
|
* @param float $density Density |
|
107
|
|
|
* |
|
108
|
|
|
* @return Rule CSS rule |
|
109
|
|
|
*/ |
|
110
|
3 |
|
protected function addWidthCondition(Rule $rule, int $imageCandidateWidth, float $density): Rule |
|
111
|
|
|
{ |
|
112
|
|
|
// If this is not the minimum width: Add a width condition |
|
113
|
3 |
|
if ($imageCandidateWidth) { |
|
114
|
3 |
|
$breakpoint = new AbsoluteLength(round($imageCandidateWidth) / $density); |
|
115
|
3 |
|
$widthMediaCondition = new WidthMediaCondition($breakpoint, CssMinMaxMediaConditionInterface::MIN); |
|
116
|
3 |
|
$rule = $rule->appendCondition($widthMediaCondition); |
|
117
|
|
|
} |
|
118
|
|
|
|
|
119
|
3 |
|
return $rule; |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
/** |
|
123
|
|
|
* Add a density condition to a CSS rule |
|
124
|
|
|
* |
|
125
|
|
|
* @param Rule $rule CSS rule |
|
126
|
|
|
* @param float $density Density |
|
127
|
|
|
* |
|
128
|
|
|
* @return Rule CSS rule |
|
129
|
|
|
*/ |
|
130
|
3 |
|
protected function addDensityCondition(Rule $rule, float $density): Rule |
|
131
|
|
|
{ |
|
132
|
|
|
// If this is not the default density: Add a resolution condition |
|
133
|
3 |
|
if ($density > 1) { |
|
134
|
2 |
|
$resolutionMediaCondition = new ResolutionMediaCondition( |
|
135
|
2 |
|
new AbsoluteLength($density), |
|
136
|
2 |
|
CssMinMaxMediaConditionInterface::MIN |
|
137
|
|
|
); |
|
138
|
2 |
|
$rule = $rule->appendCondition($resolutionMediaCondition); |
|
139
|
|
|
} |
|
140
|
|
|
|
|
141
|
3 |
|
return $rule; |
|
142
|
|
|
} |
|
143
|
|
|
} |
jkphl /
responsive-images-css
