RGBAColor::__toString() - Code Metrics - Inspection of "Updated tests." - Mistralys/application-utils - Measure and Improve Code Quality continuously with Scrutinizer

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by Sebastian

created 2022-01-25 12:56 UTC

RGBAColor::__toString() A

↳ Parent: RGBAColor

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	1
c	1
b	0
f	0
dl	0
loc	3
rs	10
cc	1
nc	1
nop	0

<?php
/**
 * File containing the class {@see RGBAColor}.
 *
 * @package Application Utils
 * @subpackage RGBAColor
 * @see RGBAColor
 */

declare(strict_types=1);

namespace AppUtils;

use AppUtils\RGBAColor\ArrayConverter;
use AppUtils\RGBAColor\ColorChannel;
use AppUtils\RGBAColor\ColorComparator;
use AppUtils\RGBAColor\ColorException;
use AppUtils\RGBAColor\ColorFactory;
use AppUtils\RGBAColor\FormatsConverter;
use ArrayAccess;

/**
 * Container for RGB color information, with optional alpha channel.
 * Allows treating the objects as an array, as a drop-in replacement
 * for the GD color functions.
 *
 * It can be cast to string, which returns the human-readable version
 * of the color as returned by {@see RGBAColor::getLabel()}.
 *
 * To create an instance, the easiest way is to use the {@see ColorFactory},
 * which offers different data models to get the color information
 * from.
 *
 * @package Application Utils
 * @subpackage RGBAColor
 * @author Sebastian Mordziol <[email protected]>
 * @implements ArrayAccess<string,ColorChannel>
 */
class RGBAColor implements ArrayAccess, Interface_Stringable
{
    public const ERROR_UNKNOWN_COLOR_SUBJECT = 93401;
    public const ERROR_INVALID_COLOR_COMPONENT = 93402;
    public const ERROR_INVALID_PERCENTAGE_VALUE = 93503;
    public const ERROR_INVALID_HEX_LENGTH = 93505;
    public const ERROR_UNKNOWN_COLOR_PRESET = 93507;
    public const ERROR_INVALID_COLOR_ARRAY = 93508;

    public const CHANNEL_RED = 'red';
    public const CHANNEL_GREEN = 'green';
    public const CHANNEL_BLUE = 'blue';
    public const CHANNEL_ALPHA = 'alpha';

    /**
     * @var array<string,ColorChannel>
     */
    private $color;

    /**
     * @var string[]
     */
    public const COLOR_COMPONENTS = array(
        self::CHANNEL_RED,
        self::CHANNEL_GREEN,
        self::CHANNEL_BLUE,
        self::CHANNEL_ALPHA
    );

    /**
     * @var string
     */
    private $name;

    /**
     * @param ColorChannel $red
     * @param ColorChannel $green
     * @param ColorChannel $blue
     * @param ColorChannel $opacity
     * @param string $name
     */
    public function __construct(ColorChannel $red, ColorChannel $green, ColorChannel $blue, ColorChannel $opacity, string $name)
    {
        $this->color[self::CHANNEL_RED] = $red;
        $this->color[self::CHANNEL_GREEN] = $green;
        $this->color[self::CHANNEL_BLUE] = $blue;
        $this->color[self::CHANNEL_ALPHA] = $opacity;
        $this->name = $name;
    }

    /**
     * Retrieves the color's name, if any. Colors created from
     * presets for example, inherit the name from the preset.
     *
     * @return string
     */
    public function getName() : string
    {
        return $this->name;
    }

    /**
     * Whether the alpha channel has a transparency value.
     * @return bool
     */
    public function hasTransparency() : bool
    {
        return $this->getOpacity()->get8Bit() < 255;
    }

    /**
     * Human-readable label of the color. Automatically
     * switches between RGBA and RGB depending on whether
     * the color has any transparency.
     *
     * @return string
     */
    public function getLabel() : string
    {
        return FormatsConverter::color2readable($this);
    }

    /**
     * The amount of red in the color.
     *
     * @return ColorChannel
     */
    public function getRed() : ColorChannel
    {
        return $this->color[self::CHANNEL_RED];
    }

    /**
     * The amount of green in the color.
     *
     * @return ColorChannel
     */
    public function getGreen() : ColorChannel
    {
        return $this->color[self::CHANNEL_GREEN];
    }

    /**
     * The amount of blue in the color.
     *
     * @return ColorChannel
     */
    public function getBlue() : ColorChannel
    {
        return $this->color[self::CHANNEL_BLUE];
    }

    /**
     * The opacity of the color (smaller value = transparent, higher value = opaque).
     *
     * @return ColorChannel
     */
    public function getOpacity() : ColorChannel
    {
        return $this->color[self::CHANNEL_ALPHA];
    }

    /**
     * Retrieves the current transparency value as a percentage.
     * 100 = fully transparent, 0 = fully opaque
     *
     * @return ColorChannel
     * @throws ColorException
     */
    public function getTransparency() : ColorChannel
    {
        return $this->color[self::CHANNEL_ALPHA]->invert();
    }

    /**
     * @param string $name
     * @return ColorChannel
     *
     * @throws ColorException
     * @see RGBAColor::ERROR_INVALID_COLOR_COMPONENT
     */
    public function getColor(string $name) : ColorChannel
    {
        $this->requireValidComponent($name);

        return $this->color[$name];
    }

    // region: Converting

    /**
     * Converts the color to a HEX color value. This is either
     * a RRGGBB or RRGGBBAA string, depending on whether there
     * is an alpha channel value.
     *
     * @return string
     */
    public function toHEX() : string
    {
        return FormatsConverter::color2HEX($this);
    }

    public function toCSS() : string
    {
        return FormatsConverter::color2CSS($this);
    }

    /**
     * Converts the color to a color array.
     *
     * @return ArrayConverter
     */
    public function toArray() : ArrayConverter
    {
        return FormatsConverter::color2array($this);
    }

    // endregion

    // region: Setting color values

    /**
     * Returns a new instance with the modified color channel,
     * keeping all other color values.
     *
     * @param ColorChannel $red
     * @return RGBAColor
     */
    public function setRed(ColorChannel $red) : RGBAColor
    {
        return ColorFactory::create(
            $red,
            $this->getGreen(),
            $this->getBlue(),
            $this->getOpacity()
        );
    }

    /**
     * Returns a new instance with the modified color channel,
     * keeping all other color values.
     *
     * @param ColorChannel $green
     * @return RGBAColor
     */
    public function setGreen(ColorChannel $green) : RGBAColor
    {
        return ColorFactory::create(
            $this->getRed(),
            $green,
            $this->getBlue(),
            $this->getOpacity()
        );
    }

    /**
     * Returns a new instance with the modified color channel,
     * keeping all other color values.
     *
     * @param ColorChannel $blue
     * @return RGBAColor
     */
    public function setBlue(ColorChannel $blue) : RGBAColor
    {
        return ColorFactory::create(
            $this->getRed(),
            $this->getGreen(),
            $blue,
            $this->getOpacity()
        );
    }

    /**
     * Returns a new instance with the modified color channel,
     * keeping all other color values.
     *
     * @param ColorChannel $opacity
     * @return RGBAColor
     */
    public function setOpacity(ColorChannel $opacity) : RGBAColor
    {
        return ColorFactory::create(
            $this->getRed(),
            $this->getGreen(),
            $this->getBlue(),
            $opacity
        );
    }

    /**
     * Sets the transparency of the color, which is an alias
     * for the opacity, but inverted. Returns a new color
     * instance with the modified value.
     *
     * @param ColorChannel $transparency
     * @return RGBAColor
     */
    public function setTransparency(ColorChannel $transparency) : RGBAColor
    {
        return $this->setOpacity($transparency->invert());
    }

    /**
     * Sets the color, and returns a new RGBAColor instance
     * with the target color modified.
     *
     * @param string $name
     * @param ColorChannel $value
     * @return RGBAColor
     *
     * @throws ColorException
     * @see RGBAColor::ERROR_INVALID_COLOR_COMPONENT
     */
    public function setColor(string $name, ColorChannel $value) : RGBAColor
    {
        $this->requireValidComponent($name);

        $channels = array(
            self::CHANNEL_RED => $this->getRed(),
            self::CHANNEL_GREEN => $this->getGreen(),
            self::CHANNEL_BLUE => $this->getBlue(),
            self::CHANNEL_ALPHA => $this->getOpacity()
        );

        $channels[$name] = $value;

        return ColorFactory::create(
            $channels[self::CHANNEL_RED],
            $channels[self::CHANNEL_GREEN],
            $channels[self::CHANNEL_BLUE],
            $channels[self::CHANNEL_ALPHA]
        );
    }

    // endregion

    /**
     * @param string $name
     * @throws ColorException
     * @see RGBAColor::ERROR_INVALID_COLOR_COMPONENT
     */
    private function requireValidComponent(string $name) : void
    {
        if(in_array($name, self::COLOR_COMPONENTS))
        {
            return;
        }

        throw new ColorException(
            'Invalid color component.',
            sprintf(
                'The color component [%s] is not a valid color component. Valid components are: [%s].',
                $name,
                implode(', ', self::COLOR_COMPONENTS)
            ),
            self::ERROR_INVALID_COLOR_COMPONENT
        );
    }

    /**
     * Whether this color is the same as the specified color.
     *
     * NOTE: Only compares the RGB color values, ignoring the
     * transparency. To also compare transparency, use `matchesAlpha()`.
     *
     * @param RGBAColor $targetColor
     * @return bool
     * @throws ColorException
     */
    public function matches(RGBAColor $targetColor) : bool
    {
        return ColorComparator::colorsMatch($this, $targetColor);
    }

    /**
     * Whether this color is the same as the specified color,
     * including the alpha channel.
     *
     * @param RGBAColor $targetColor
     * @return bool
     * @throws ColorException
     */
    public function matchesAlpha(RGBAColor $targetColor) : bool
    {
        return ColorComparator::colorsMatchAlpha($this, $targetColor);
    }

    public function __toString()
    {
        return $this->getLabel();
    }

    // region: ArrayAccess interface methods

    public function offsetExists($offset)
    {
        $key = (string)$offset;

        return isset($this->color[$key]);
    }

    public function offsetGet($offset)
    {
        $key = (string)$offset;

        return $this->color[$key] ?? 0;
    }

    public function offsetSet($offset, $value)
    {
        $this->setColor((string)$offset, $value);
    }

    public function offsetUnset($offset)
    {

    }

    // endregion
}


1			<?php
2			/**
3			* File containing the class {@see RGBAColor}.
4			*
5			* @package Application Utils
6			* @subpackage RGBAColor
7			* @see RGBAColor
8			*/
9
10			declare(strict_types=1);
11
12			namespace AppUtils;
13
14			use AppUtils\RGBAColor\ArrayConverter;
15			use AppUtils\RGBAColor\ColorChannel;
16			use AppUtils\RGBAColor\ColorComparator;
17			use AppUtils\RGBAColor\ColorException;
18			use AppUtils\RGBAColor\ColorFactory;
19			use AppUtils\RGBAColor\FormatsConverter;
20			use ArrayAccess;
21
22			/**
23			* Container for RGB color information, with optional alpha channel.
24			* Allows treating the objects as an array, as a drop-in replacement
25			* for the GD color functions.
26			*
27			* It can be cast to string, which returns the human-readable version
28			* of the color as returned by {@see RGBAColor::getLabel()}.
29			*
30			* To create an instance, the easiest way is to use the {@see ColorFactory},
31			* which offers different data models to get the color information
32			* from.
33			*
34			* @package Application Utils
35			* @subpackage RGBAColor
36			* @author Sebastian Mordziol <[email protected]>
37			* @implements ArrayAccess<string,ColorChannel>
38			*/
39			class RGBAColor implements ArrayAccess, Interface_Stringable
40			{
41			public const ERROR_UNKNOWN_COLOR_SUBJECT = 93401;
42			public const ERROR_INVALID_COLOR_COMPONENT = 93402;
43			public const ERROR_INVALID_PERCENTAGE_VALUE = 93503;
44			public const ERROR_INVALID_HEX_LENGTH = 93505;
45			public const ERROR_UNKNOWN_COLOR_PRESET = 93507;
46			public const ERROR_INVALID_COLOR_ARRAY = 93508;
47
48			public const CHANNEL_RED = 'red';
49			public const CHANNEL_GREEN = 'green';
50			public const CHANNEL_BLUE = 'blue';
51			public const CHANNEL_ALPHA = 'alpha';
52
53			/**
54			* @var array<string,ColorChannel>
55			*/
56			private $color;
57
58			/**
59			* @var string[]
60			*/
61			public const COLOR_COMPONENTS = array(
62			self::CHANNEL_RED,
63			self::CHANNEL_GREEN,
64			self::CHANNEL_BLUE,
65			self::CHANNEL_ALPHA
66			);
67
68			/**
69			* @var string
70			*/
71			private $name;
72
73			/**
74			* @param ColorChannel $red
75			* @param ColorChannel $green
76			* @param ColorChannel $blue
77			* @param ColorChannel $opacity
78			* @param string $name
79			*/
80			public function __construct(ColorChannel $red, ColorChannel $green, ColorChannel $blue, ColorChannel $opacity, string $name)
81			{
82			$this->color[self::CHANNEL_RED] = $red;
83			$this->color[self::CHANNEL_GREEN] = $green;
84			$this->color[self::CHANNEL_BLUE] = $blue;
85			$this->color[self::CHANNEL_ALPHA] = $opacity;
86			$this->name = $name;
87			}
88
89			/**
90			* Retrieves the color's name, if any. Colors created from
91			* presets for example, inherit the name from the preset.
92			*
93			* @return string
94			*/
95			public function getName() : string
96			{
97			return $this->name;
98			}
99
100			/**
101			* Whether the alpha channel has a transparency value.
102			* @return bool
103			*/
104			public function hasTransparency() : bool
105			{
106			return $this->getOpacity()->get8Bit() < 255;
107			}
108
109			/**
110			* Human-readable label of the color. Automatically
111			* switches between RGBA and RGB depending on whether
112			* the color has any transparency.
113			*
114			* @return string
115			*/
116			public function getLabel() : string
117			{
118			return FormatsConverter::color2readable($this);
119			}
120
121			/**
122			* The amount of red in the color.
123			*
124			* @return ColorChannel
125			*/
126			public function getRed() : ColorChannel
127			{
128			return $this->color[self::CHANNEL_RED];
129			}
130
131			/**
132			* The amount of green in the color.
133			*
134			* @return ColorChannel
135			*/
136			public function getGreen() : ColorChannel
137			{
138			return $this->color[self::CHANNEL_GREEN];
139			}
140
141			/**
142			* The amount of blue in the color.
143			*
144			* @return ColorChannel
145			*/
146			public function getBlue() : ColorChannel
147			{
148			return $this->color[self::CHANNEL_BLUE];
149			}
150
151			/**
152			* The opacity of the color (smaller value = transparent, higher value = opaque).
153			*
154			* @return ColorChannel
155			*/
156			public function getOpacity() : ColorChannel
157			{
158			return $this->color[self::CHANNEL_ALPHA];
159			}
160
161			/**
162			* Retrieves the current transparency value as a percentage.
163			* 100 = fully transparent, 0 = fully opaque
164			*
165			* @return ColorChannel
166			* @throws ColorException
167			*/
168			public function getTransparency() : ColorChannel
169			{
170			return $this->color[self::CHANNEL_ALPHA]->invert();
171			}
172
173			/**
174			* @param string $name
175			* @return ColorChannel
176			*
177			* @throws ColorException
178			* @see RGBAColor::ERROR_INVALID_COLOR_COMPONENT
179			*/
180			public function getColor(string $name) : ColorChannel
181			{
182			$this->requireValidComponent($name);
183
184			return $this->color[$name];
185			}
186
187			// region: Converting
188
189			/**
190			* Converts the color to a HEX color value. This is either
191			* a RRGGBB or RRGGBBAA string, depending on whether there
192			* is an alpha channel value.
193			*
194			* @return string
195			*/
196			public function toHEX() : string
197			{
198			return FormatsConverter::color2HEX($this);
199			}
200
201			public function toCSS() : string
202			{
203			return FormatsConverter::color2CSS($this);
204			}
205
206			/**
207			* Converts the color to a color array.
208			*
209			* @return ArrayConverter
210			*/
211			public function toArray() : ArrayConverter
212			{
213			return FormatsConverter::color2array($this);
214			}
215
216			// endregion
217
218			// region: Setting color values
219
220			/**
221			* Returns a new instance with the modified color channel,
222			* keeping all other color values.
223			*
224			* @param ColorChannel $red
225			* @return RGBAColor
226			*/
227			public function setRed(ColorChannel $red) : RGBAColor
228			{
229			return ColorFactory::create(
230			$red,
231			$this->getGreen(),
232			$this->getBlue(),
233			$this->getOpacity()
234			);
235			}
236
237			/**
238			* Returns a new instance with the modified color channel,
239			* keeping all other color values.
240			*
241			* @param ColorChannel $green
242			* @return RGBAColor
243			*/
244			public function setGreen(ColorChannel $green) : RGBAColor
245			{
246			return ColorFactory::create(
247			$this->getRed(),
248			$green,
249			$this->getBlue(),
250			$this->getOpacity()
251			);
252			}
253
254			/**
255			* Returns a new instance with the modified color channel,
256			* keeping all other color values.
257			*
258			* @param ColorChannel $blue
259			* @return RGBAColor
260			*/
261			public function setBlue(ColorChannel $blue) : RGBAColor
262			{
263			return ColorFactory::create(
264			$this->getRed(),
265			$this->getGreen(),
266			$blue,
267			$this->getOpacity()
268			);
269			}
270
271			/**
272			* Returns a new instance with the modified color channel,
273			* keeping all other color values.
274			*
275			* @param ColorChannel $opacity
276			* @return RGBAColor
277			*/
278			public function setOpacity(ColorChannel $opacity) : RGBAColor
279			{
280			return ColorFactory::create(
281			$this->getRed(),
282			$this->getGreen(),
283			$this->getBlue(),
284			$opacity
285			);
286			}
287
288			/**
289			* Sets the transparency of the color, which is an alias
290			* for the opacity, but inverted. Returns a new color
291			* instance with the modified value.
292			*
293			* @param ColorChannel $transparency
294			* @return RGBAColor
295			*/
296			public function setTransparency(ColorChannel $transparency) : RGBAColor
297			{
298			return $this->setOpacity($transparency->invert());
299			}
300
301			/**
302			* Sets the color, and returns a new RGBAColor instance
303			* with the target color modified.
304			*
305			* @param string $name
306			* @param ColorChannel $value
307			* @return RGBAColor
308			*
309			* @throws ColorException
310			* @see RGBAColor::ERROR_INVALID_COLOR_COMPONENT
311			*/
312			public function setColor(string $name, ColorChannel $value) : RGBAColor
313			{
314			$this->requireValidComponent($name);
315
316			$channels = array(
317			self::CHANNEL_RED => $this->getRed(),
318			self::CHANNEL_GREEN => $this->getGreen(),
319			self::CHANNEL_BLUE => $this->getBlue(),
320			self::CHANNEL_ALPHA => $this->getOpacity()
321			);
322
323			$channels[$name] = $value;
324
325			return ColorFactory::create(
326			$channels[self::CHANNEL_RED],
327			$channels[self::CHANNEL_GREEN],
328			$channels[self::CHANNEL_BLUE],
329			$channels[self::CHANNEL_ALPHA]
330			);
331			}
332
333			// endregion
334
335			/**
336			* @param string $name
337			* @throws ColorException
338			* @see RGBAColor::ERROR_INVALID_COLOR_COMPONENT
339			*/
340			private function requireValidComponent(string $name) : void
341			{
342			if(in_array($name, self::COLOR_COMPONENTS))
343			{
344			return;
345			}
346
347			throw new ColorException(
348			'Invalid color component.',
349			sprintf(
350			'The color component [%s] is not a valid color component. Valid components are: [%s].',
351			$name,
352			implode(', ', self::COLOR_COMPONENTS)
353			),
354			self::ERROR_INVALID_COLOR_COMPONENT
355			);
356			}
357
358			/**
359			* Whether this color is the same as the specified color.
360			*
361			* NOTE: Only compares the RGB color values, ignoring the
362			* transparency. To also compare transparency, use `matchesAlpha()`.
363			*
364			* @param RGBAColor $targetColor
365			* @return bool
366			* @throws ColorException
367			*/
368			public function matches(RGBAColor $targetColor) : bool
369			{
370			return ColorComparator::colorsMatch($this, $targetColor);
371			}
372
373			/**
374			* Whether this color is the same as the specified color,
375			* including the alpha channel.
376			*
377			* @param RGBAColor $targetColor
378			* @return bool
379			* @throws ColorException
380			*/
381			public function matchesAlpha(RGBAColor $targetColor) : bool
382			{
383			return ColorComparator::colorsMatchAlpha($this, $targetColor);
384			}
385
386			public function __toString()
387			{
388			return $this->getLabel();
389			}
390
391			// region: ArrayAccess interface methods
392
393			public function offsetExists($offset)
394			{
395			$key = (string)$offset;
396
397			return isset($this->color[$key]);
398			}
399
400			public function offsetGet($offset)
401			{
402			$key = (string)$offset;
403
404			return $this->color[$key] ?? 0;
405			}
406
407			public function offsetSet($offset, $value)
408			{
409			$this->setColor((string)$offset, $value);
410			}
411
412			public function offsetUnset($offset)
413			{
414
415			}
416
417			// endregion
418			}
419

Mistralys / application-utils

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RGBAColor::__toString() A

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