| Flutter Impeller |

Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
impeller::Color Struct Reference

`#include <color.h>`

## Public Member Functions
constexpr | Color ()
| Color (const Vector4 &value)
constexpr | Color (Scalar r, Scalar g, Scalar b, Scalar a)
constexpr bool | operator== (const Color &c) const
constexpr Color | operator+ (const Color &c) const
template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color | operator+ (T value) const
constexpr Color | operator- (const Color &c) const
template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color | operator- (T value) const
constexpr Color | operator* (const Color &c) const
template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color | operator* (T value) const
constexpr Color | operator/ (const Color &c) const
template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color | operator/ (T value) const
constexpr Color | Premultiply () const
constexpr Color | Unpremultiply () const
constexpr Color | Clamp01 () const
std::array< uint8_t, 4 > | ToR8G8B8A8 () const
| Convert to R8G8B8A8 representation. More...
uint32_t | ToARGB () const
| Convert to ARGB 32 bit color. More...
constexpr Color | WithAlpha (Scalar new_alpha) const
Color | Blend (Color source, BlendMode blend_mode) const
| Blends an unpremultiplied destination color into a given unpremultiplied source color to form a new unpremultiplied color. More...
Color | ApplyColorMatrix (const ColorMatrix &color_matrix) const
| A color filter that transforms colors through a 4x5 color matrix. More...
Color | LinearToSRGB () const
| Convert the color from linear space to sRGB space. More...
Color | SRGBToLinear () const
| Convert the color from sRGB space to linear space. More...
constexpr bool | IsTransparent () const
constexpr bool | IsOpaque () const

## Static Public Member Functions
static constexpr Color | MakeRGBA8 (uint8_t r, uint8_t g, uint8_t b, uint8_t a)
static uint32_t | ToIColor (Color color)
| Convert this color to a 32-bit representation. More...
constexpr static Color | Lerp (Color a, Color b, Scalar t)
| Return a color that is linearly interpolated between colors a and b, according to the value of t. More...
static constexpr Color | White ()
static constexpr Color | Black ()
static constexpr Color | WhiteTransparent ()
static constexpr Color | BlackTransparent ()
static constexpr Color | Red ()
static constexpr Color | Green ()
static constexpr Color | Blue ()
static constexpr Color | AliceBlue ()
static constexpr Color | AntiqueWhite ()
static constexpr Color | Aqua ()
static constexpr Color | AquaMarine ()
static constexpr Color | Azure ()
static constexpr Color | Beige ()
static constexpr Color | Bisque ()
static constexpr Color | BlanchedAlmond ()
static constexpr Color | BlueViolet ()
static constexpr Color | Brown ()
static constexpr Color | BurlyWood ()
static constexpr Color | CadetBlue ()
static constexpr Color | Chartreuse ()
static constexpr Color | Chocolate ()
static constexpr Color | Coral ()
static constexpr Color | CornflowerBlue ()
static constexpr Color | Cornsilk ()
static constexpr Color | Crimson ()
static constexpr Color | Cyan ()
static constexpr Color | DarkBlue ()
static constexpr Color | DarkCyan ()
static constexpr Color | DarkGoldenrod ()
static constexpr Color | DarkGray ()
static constexpr Color | DarkGreen ()
static constexpr Color | DarkGrey ()
static constexpr Color | DarkKhaki ()
static constexpr Color | DarkMagenta ()
static constexpr Color | DarkOliveGreen ()
static constexpr Color | DarkOrange ()
static constexpr Color | DarkOrchid ()
static constexpr Color | DarkRed ()
static constexpr Color | DarkSalmon ()
static constexpr Color | DarkSeagreen ()
static constexpr Color | DarkSlateBlue ()
static constexpr Color | DarkSlateGray ()
static constexpr Color | DarkSlateGrey ()
static constexpr Color | DarkTurquoise ()
static constexpr Color | DarkViolet ()
static constexpr Color | DeepPink ()
static constexpr Color | DeepSkyBlue ()
static constexpr Color | DimGray ()
static constexpr Color | DimGrey ()
static constexpr Color | DodgerBlue ()
static constexpr Color | Firebrick ()
static constexpr Color | FloralWhite ()
static constexpr Color | ForestGreen ()
static constexpr Color | Fuchsia ()
static constexpr Color | Gainsboro ()
static constexpr Color | Ghostwhite ()
static constexpr Color | Gold ()
static constexpr Color | Goldenrod ()
static constexpr Color | Gray ()
static constexpr Color | GreenYellow ()
static constexpr Color | Grey ()
static constexpr Color | Honeydew ()
static constexpr Color | HotPink ()
static constexpr Color | IndianRed ()
static constexpr Color | Indigo ()
static constexpr Color | Ivory ()
static constexpr Color | Khaki ()
static constexpr Color | Lavender ()
static constexpr Color | LavenderBlush ()
static constexpr Color | LawnGreen ()
static constexpr Color | LemonChiffon ()
static constexpr Color | LightBlue ()
static constexpr Color | LightCoral ()
static constexpr Color | LightCyan ()
static constexpr Color | LightGoldenrodYellow ()
static constexpr Color | LightGray ()
static constexpr Color | LightGreen ()
static constexpr Color | LightGrey ()
static constexpr Color | LightPink ()
static constexpr Color | LightSalmon ()
static constexpr Color | LightSeaGreen ()
static constexpr Color | LightSkyBlue ()
static constexpr Color | LightSlateGray ()
static constexpr Color | LightSlateGrey ()
static constexpr Color | LightSteelBlue ()
static constexpr Color | LightYellow ()
static constexpr Color | Lime ()
static constexpr Color | LimeGreen ()
static constexpr Color | Linen ()
static constexpr Color | Magenta ()
static constexpr Color | Maroon ()
static constexpr Color | MediumAquamarine ()
static constexpr Color | MediumBlue ()
static constexpr Color | MediumOrchid ()
static constexpr Color | MediumPurple ()
static constexpr Color | MediumSeagreen ()
static constexpr Color | MediumSlateBlue ()
static constexpr Color | MediumSpringGreen ()
static constexpr Color | MediumTurquoise ()
static constexpr Color | MediumVioletRed ()
static constexpr Color | MidnightBlue ()
static constexpr Color | MintCream ()
static constexpr Color | MistyRose ()
static constexpr Color | Moccasin ()
static constexpr Color | NavajoWhite ()
static constexpr Color | Navy ()
static constexpr Color | OldLace ()
static constexpr Color | Olive ()
static constexpr Color | OliveDrab ()
static constexpr Color | Orange ()
static constexpr Color | OrangeRed ()
static constexpr Color | Orchid ()
static constexpr Color | PaleGoldenrod ()
static constexpr Color | PaleGreen ()
static constexpr Color | PaleTurquoise ()
static constexpr Color | PaleVioletRed ()
static constexpr Color | PapayaWhip ()
static constexpr Color | Peachpuff ()
static constexpr Color | Peru ()
static constexpr Color | Pink ()
static constexpr Color | Plum ()
static constexpr Color | PowderBlue ()
static constexpr Color | Purple ()
static constexpr Color | RosyBrown ()
static constexpr Color | RoyalBlue ()
static constexpr Color | SaddleBrown ()
static constexpr Color | Salmon ()
static constexpr Color | SandyBrown ()
static constexpr Color | Seagreen ()
static constexpr Color | Seashell ()
static constexpr Color | Sienna ()
static constexpr Color | Silver ()
static constexpr Color | SkyBlue ()
static constexpr Color | SlateBlue ()
static constexpr Color | SlateGray ()
static constexpr Color | SlateGrey ()
static constexpr Color | Snow ()
static constexpr Color | SpringGreen ()
static constexpr Color | SteelBlue ()
static constexpr Color | Tan ()
static constexpr Color | Teal ()
static constexpr Color | Thistle ()
static constexpr Color | Tomato ()
static constexpr Color | Turquoise ()
static constexpr Color | Violet ()
static constexpr Color | Wheat ()
static constexpr Color | Whitesmoke ()
static constexpr Color | Yellow ()
static constexpr Color | YellowGreen ()
static Color | Random ()

## Public Attributes
Scalar | red = 0.0
Scalar | green = 0.0
Scalar | blue = 0.0
Scalar | alpha = 0.0

## Detailed Description

Represents a RGBA color

Definition at line 124 of file color.h.

## Constructor & Destructor Documentation

## ◆ Color() [1/3]

constexpr impeller::Color::Color | ( |  | ) |
| inline constexpr

Definition at line 145 of file color.h.

145 {}

Referenced by ApplyColorMatrix(), Clamp01(), LinearToSRGB(), MakeRGBA8(), and SRGBToLinear().

## ◆ Color() [2/3]

impeller::Color::Color | ( | const Vector4 & | value | ) |
| explicit

Definition at line 52 of file color.cc.

53 : red(value.x), green(value.y), blue(value.z), alpha(value.w) {}
value
int32_t value
Definition: dl_golden_unittests.cc:459
impeller::Color::blue
Scalar blue
Definition: color.h:138
impeller::Color::alpha
Scalar alpha
Definition: color.h:143
impeller::Color::red
Scalar red
Definition: color.h:128
impeller::Color::green
Scalar green
Definition: color.h:133

## ◆ Color() [3/3]

constexpr impeller::Color::Color | ( | Scalar | r,
|  | Scalar | g,
|  | Scalar | b,
|  | Scalar | a
| ) |  |
| inline constexpr

Definition at line 149 of file color.h.

150 : red(r), green(g), blue(b), alpha(a) {}
impeller::saturated::b
SI b
Definition: saturated_math.h:87

## Member Function Documentation

## ◆ AliceBlue()

static constexpr Color impeller::Color::AliceBlue | ( |  | ) |
| inline static constexpr

Definition at line 282 of file color.h.

282 {
283 return {240.0f / 255.0f, 248.0f / 255.0f, 255.0f / 255.0f, 1.0f};
284 }

## ◆ AntiqueWhite()

static constexpr Color impeller::Color::AntiqueWhite | ( |  | ) |
| inline static constexpr

Definition at line 286 of file color.h.

286 {
287 return {250.0f / 255.0f, 235.0f / 255.0f, 215.0f / 255.0f, 1.0f};
288 }

Referenced by impeller::testing::MaskBlurVariantTest().

## ◆ ApplyColorMatrix()

Color impeller::Color::ApplyColorMatrix | ( | const ColorMatrix & | color_matrix | ) | const

A color filter that transforms colors through a 4x5 color matrix.

       This filter can be used to change the saturation of pixels, convert
       from YUV to RGB, etc.

       Each channel of the output color is clamped to the 0 to 1 range.

See also
  `ColorMatrix`

Definition at line 301 of file color.cc.

301 {
302 auto* c = color_matrix.array;
303 return Color(
304 c[0] * red + c[1] * green + c[2] * blue + c[3] * alpha + c[4],
305 c[5] * red + c[6] * green + c[7] * blue + c[8] * alpha + c[9],
306 c[10] * red + c[11] * green + c[12] * blue + c[13] * alpha + c[14],
307 c[15] * red + c[16] * green + c[17] * blue + c[18] * alpha + c[19])
308 .Clamp01();
309 }
impeller::Color::Color
constexpr Color()
Definition: color.h:145

References alpha, impeller::ColorMatrix::array, blue, Color(), green, and red.

Referenced by impeller::testing::TEST().

## ◆ Aqua()

static constexpr Color impeller::Color::Aqua | ( |  | ) |
| inline static constexpr

Definition at line 290 of file color.h.

290 {
291 return {0.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
292 }

## ◆ AquaMarine()

static constexpr Color impeller::Color::AquaMarine | ( |  | ) |
| inline static constexpr

Definition at line 294 of file color.h.

294 {
295 return {127.0f / 255.0f, 255.0f / 255.0f, 212.0f / 255.0f, 1.0f};
296 }

## ◆ Azure()

static constexpr Color impeller::Color::Azure | ( |  | ) |
| inline static constexpr

Definition at line 298 of file color.h.

298 {
299 return {240.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
300 }

Referenced by impeller::testing::TEST_P().

## ◆ Beige()

static constexpr Color impeller::Color::Beige | ( |  | ) |
| inline static constexpr

Definition at line 302 of file color.h.

302 {
303 return {245.0f / 255.0f, 245.0f / 255.0f, 220.0f / 255.0f, 1.0f};
304 }

## ◆ Bisque()

static constexpr Color impeller::Color::Bisque | ( |  | ) |
| inline static constexpr

Definition at line 306 of file color.h.

306 {
307 return {255.0f / 255.0f, 228.0f / 255.0f, 196.0f / 255.0f, 1.0f};
308 }

## ◆ Black()

static constexpr Color impeller::Color::Black | ( |  | ) |
| inline static constexpr

Definition at line 266 of file color.h.

266 { return {0.0f, 0.0f, 0.0f, 1.0f}; }

Referenced by impeller::testing::BlendModeTest(), impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ BlackTransparent()

static constexpr Color impeller::Color::BlackTransparent | ( |  | ) |
| inline static constexpr

Definition at line 270 of file color.h.

270 { return {0.0f, 0.0f, 0.0f, 0.0f}; }

Referenced by Blend(), impeller::ContentContext::ContentContext(), impeller::Paint::CreateContents(), impeller::DlVerticesGeometry::GetPositionUVColorBuffer(), impeller::Canvas::SaveLayer(), impeller::testing::TEST(), and Unpremultiply().

## ◆ BlanchedAlmond()

static constexpr Color impeller::Color::BlanchedAlmond | ( |  | ) |
| inline static constexpr

Definition at line 310 of file color.h.

310 {
311 return {255.0f / 255.0f, 235.0f / 255.0f, 205.0f / 255.0f, 1.0f};
312 }

## ◆ Blend()

Color impeller::Color::Blend | ( | Color | source,
|  | BlendMode | blend_mode
| ) |  | const

Blends an unpremultiplied destination color into a given unpremultiplied source color to form a new unpremultiplied color.

If either the source or destination are premultiplied, the result will be incorrect.

Definition at line 157 of file color.cc.

157 {
158 Color dst = *this;
159
160 switch (blend_mode) {
161 case BlendMode::kClear:
162 return Color::BlackTransparent();
163 case BlendMode::kSrc:
164 return src;
165 case BlendMode::kDst:
166 return dst;
167 case BlendMode::kSrcOver:
168 // r = s + (1-sa)*d
169 return (src.Premultiply() + dst.Premultiply() * (1 - src.alpha))
170 .Unpremultiply();
171 case BlendMode::kDstOver:
172 // r = d + (1-da)*s
173 return (dst.Premultiply() + src.Premultiply() * (1 - dst.alpha))
174 .Unpremultiply();
175 case BlendMode::kSrcIn:
176 // r = s * da
177 return (src.Premultiply() * dst.alpha).Unpremultiply();
178 case BlendMode::kDstIn:
179 // r = d * sa
180 return (dst.Premultiply() * src.alpha).Unpremultiply();
181 case BlendMode::kSrcOut:
182 // r = s * ( 1- da)
183 return (src.Premultiply() * (1 - dst.alpha)).Unpremultiply();
184 case BlendMode::kDstOut:
185 // r = d * (1-sa)
186 return (dst.Premultiply() * (1 - src.alpha)).Unpremultiply();
187 case BlendMode::kSrcATop:
188 // r = s*da + d*(1-sa)
189 return (src.Premultiply() * dst.alpha +
190 dst.Premultiply() * (1 - src.alpha))
191 .Unpremultiply();
192 case BlendMode::kDstATop:
193 // r = d*sa + s*(1-da)
194 return (dst.Premultiply() * src.alpha +
195 src.Premultiply() * (1 - dst.alpha))
196 .Unpremultiply();
197 case BlendMode::kXor:
198 // r = s*(1-da) + d*(1-sa)
199 return (src.Premultiply() * (1 - dst.alpha) +
200 dst.Premultiply() * (1 - src.alpha))
201 .Unpremultiply();
202 case BlendMode::kPlus:
203 // r = min(s + d, 1)
204 return (Min(src.Premultiply() + dst.Premultiply(), 1)).Unpremultiply();
205 case BlendMode::kModulate:
206 // r = s*d
207 return (src.Premultiply() * dst.Premultiply()).Unpremultiply();
208 case BlendMode::kScreen: {
209 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
210 return s + d - s * d;
211 });
212 }
213 case BlendMode::kOverlay:
214 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
215 // The same as HardLight, but with the source and destination reversed.
216 Vector3 screen_src = 2.0 * d - 1.0;
217 Vector3 screen = screen_src + s - screen_src * s;
218 return ComponentChoose(s * (2.0 * d), //
219 screen, //
220 d, //
221 0.5);
222 });
223 case BlendMode::kDarken:
224 return DoColorBlend(
225 dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d.Min(s); });
226 case BlendMode::kLighten:
227 return DoColorBlend(
228 dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d.Max(s); });
229 case BlendMode::kColorDodge:
230 return DoColorBlendComponents(dst, src, [](Scalar d, Scalar s) -> Scalar {
231 if (d < kEhCloseEnough) {
232 return 0.0f;
233 }
234 if (1.0 - s < kEhCloseEnough) {
235 return 1.0f;
236 }
237 return std::min(1.0f, d / (1.0f - s));
238 });
239 case BlendMode::kColorBurn:
240 return DoColorBlendComponents(dst, src, [](Scalar d, Scalar s) -> Scalar {
241 if (1.0 - d < kEhCloseEnough) {
242 return 1.0f;
243 }
244 if (s < kEhCloseEnough) {
245 return 0.0f;
246 }
247 return 1.0f - std::min(1.0f, (1.0f - d) / s);
248 });
249 case BlendMode::kHardLight:
250 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
251 Vector3 screen_src = 2.0 * s - 1.0;
252 Vector3 screen = screen_src + d - screen_src * d;
253 return ComponentChoose(d * (2.0 * s), //
254 screen, //
255 s, //
256 0.5);
257 });
258 case BlendMode::kSoftLight:
259 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
260 Vector3 D = ComponentChoose(((16.0 * d - 12.0) * d + 4.0) * d, //
261 Vector3(std::sqrt(d.x), std::sqrt(d.y),
262 std::sqrt(d.z)), //
263 d, //
264 0.25);
265 return ComponentChoose(d - (1.0 - 2.0 * s) * d * (1.0 - d), //
266 d + (2.0 * s - 1.0) * (D - d), //
267 s, //
268 0.5);
269 });
270 case BlendMode::kDifference:
271 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
272 return (d - s).Abs();
273 });
274 case BlendMode::kExclusion:
275 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
276 return d + s - 2.0f * d * s;
277 });
278 case BlendMode::kMultiply:
279 return DoColorBlend(
280 dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d * s; });
281 case BlendMode::kHue: {
282 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
283 return SetLuminosity(SetSaturation(s, Saturation(d)), Luminosity(d));
284 });
285 }
286 case BlendMode::kSaturation:
287 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
288 return SetLuminosity(SetSaturation(d, Saturation(s)), Luminosity(d));
289 });
290 case BlendMode::kColor:
291 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
292 return SetLuminosity(s, Luminosity(d));
293 });
294 case BlendMode::kLuminosity:
295 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
296 return SetLuminosity(d, Luminosity(s));
297 });
298 }
299 }
impeller::Min
static constexpr Color Min(Color c, float threshold)
Definition: color.cc:55
impeller::SetSaturation
static constexpr Vector3 SetSaturation(Vector3 color, Scalar saturation)
Definition: color.cc:94
impeller::Scalar
float Scalar
Definition: scalar.h:19
impeller::DoColorBlendComponents
static Color DoColorBlendComponents(Color dst, Color src, const std::function< Scalar(Scalar, Scalar)> &blend_func)
Definition: color.cc:147
impeller::kEhCloseEnough
constexpr float kEhCloseEnough
Definition: constants.h:57
impeller::Saturation
static constexpr Scalar Saturation(Vector3 color)
Definition: color.cc:89
impeller::SetLuminosity
static constexpr Vector3 SetLuminosity(Vector3 color, Scalar luminosity)
Definition: color.cc:83
impeller::BlendMode::kSrcOut
@ kSrcOut
impeller::BlendMode::kExclusion
@ kExclusion
impeller::BlendMode::kSaturation
@ kSaturation
impeller::BlendMode::kColorBurn
@ kColorBurn
impeller::BlendMode::kPlus
@ kPlus
impeller::BlendMode::kLighten
@ kLighten
impeller::BlendMode::kHue
@ kHue
impeller::BlendMode::kDst
@ kDst
impeller::BlendMode::kDstIn
@ kDstIn
impeller::BlendMode::kModulate
@ kModulate
impeller::BlendMode::kMultiply
@ kMultiply
impeller::BlendMode::kColorDodge
@ kColorDodge
impeller::BlendMode::kScreen
@ kScreen
impeller::BlendMode::kSrcOver
@ kSrcOver
impeller::BlendMode::kXor
@ kXor
impeller::BlendMode::kSrc
@ kSrc
impeller::BlendMode::kLuminosity
@ kLuminosity
impeller::BlendMode::kSoftLight
@ kSoftLight
impeller::BlendMode::kDifference
@ kDifference
impeller::BlendMode::kOverlay
@ kOverlay
impeller::BlendMode::kSrcATop
@ kSrcATop
impeller::BlendMode::kDstATop
@ kDstATop
impeller::BlendMode::kDstOver
@ kDstOver
impeller::BlendMode::kColor
@ kColor
impeller::BlendMode::kHardLight
@ kHardLight
impeller::BlendMode::kDstOut
@ kDstOut
impeller::BlendMode::kDarken
@ kDarken
impeller::BlendMode::kSrcIn
@ kSrcIn
impeller::BlendMode::kClear
@ kClear
impeller::DoColorBlend
static Color DoColorBlend(Color dst, Color src, const std::function< Vector3(Vector3, Vector3)> &blend_rgb_func)
Definition: color.cc:139
impeller::ComponentChoose
static constexpr Vector3 ComponentChoose(Vector3 a, Vector3 b, Vector3 value, Scalar cutoff)
Definition: color.cc:101
impeller::Luminosity
static constexpr Scalar Luminosity(Vector3 color)
Definition: color.cc:63
impeller::Color::BlackTransparent
static constexpr Color BlackTransparent()
Definition: color.h:270

References alpha, BlackTransparent(), impeller::ComponentChoose(), impeller::DoColorBlend(), impeller::DoColorBlendComponents(), impeller::kClear, impeller::kColor, impeller::kColorBurn, impeller::kColorDodge, impeller::kDarken, impeller::kDifference, impeller::kDst, impeller::kDstATop, impeller::kDstIn, impeller::kDstOut, impeller::kDstOver, impeller::kEhCloseEnough, impeller::kExclusion, impeller::kHardLight, impeller::kHue, impeller::kLighten, impeller::kLuminosity, impeller::kModulate, impeller::kMultiply, impeller::kOverlay, impeller::kPlus, impeller::kSaturation, impeller::kScreen, impeller::kSoftLight, impeller::kSrc, impeller::kSrcATop, impeller::kSrcIn, impeller::kSrcOut, impeller::kSrcOver, impeller::kXor, impeller::Luminosity(), impeller::Vector3::Max(), impeller::Min(), impeller::Vector3::Min(), Premultiply(), impeller::Saturation(), impeller::SetLuminosity(), impeller::SetSaturation(), impeller::Vector3::x, impeller::Vector3::y, and impeller::Vector3::z.

Referenced by impeller::testing::BlendModeTest(), impeller::GetCPUColorFilterProc(), and impeller::testing::TEST_P().

## ◆ Blue()

static constexpr Color impeller::Color::Blue | ( |  | ) |
| inline static constexpr

Definition at line 276 of file color.h.

276 { return {0.0f, 0.0f, 1.0f, 1.0f}; }

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ BlueViolet()

static constexpr Color impeller::Color::BlueViolet | ( |  | ) |
| inline static constexpr

Definition at line 314 of file color.h.

314 {
315 return {138.0f / 255.0f, 43.0f / 255.0f, 226.0f / 255.0f, 1.0f};
316 }

## ◆ Brown()

static constexpr Color impeller::Color::Brown | ( |  | ) |
| inline static constexpr

Definition at line 318 of file color.h.

318 {
319 return {165.0f / 255.0f, 42.0f / 255.0f, 42.0f / 255.0f, 1.0f};
320 }

## ◆ BurlyWood()

static constexpr Color impeller::Color::BurlyWood | ( |  | ) |
| inline static constexpr

Definition at line 322 of file color.h.

322 {
323 return {222.0f / 255.0f, 184.0f / 255.0f, 135.0f / 255.0f, 1.0f};
324 }

## ◆ CadetBlue()

static constexpr Color impeller::Color::CadetBlue | ( |  | ) |
| inline static constexpr

Definition at line 326 of file color.h.

326 {
327 return {95.0f / 255.0f, 158.0f / 255.0f, 160.0f / 255.0f, 1.0f};
328 }

## ◆ Chartreuse()

static constexpr Color impeller::Color::Chartreuse | ( |  | ) |
| inline static constexpr

Definition at line 330 of file color.h.

330 {
331 return {127.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
332 }

## ◆ Chocolate()

static constexpr Color impeller::Color::Chocolate | ( |  | ) |
| inline static constexpr

Definition at line 334 of file color.h.

334 {
335 return {210.0f / 255.0f, 105.0f / 255.0f, 30.0f / 255.0f, 1.0f};
336 }

## ◆ Clamp01()

constexpr Color impeller::Color::Clamp01 | ( |  | ) | const
| inline constexpr

Definition at line 236 of file color.h.

236 {
237 return Color(std::clamp(red, 0.0f, 1.0f), std::clamp(green, 0.0f, 1.0f),
238 std::clamp(blue, 0.0f, 1.0f), std::clamp(alpha, 0.0f, 1.0f));
239 }

References alpha, blue, Color(), green, and red.

Referenced by impeller::testing::TEST().

## ◆ Coral()

static constexpr Color impeller::Color::Coral | ( |  | ) |
| inline static constexpr

Definition at line 338 of file color.h.

338 {
339 return {255.0f / 255.0f, 127.0f / 255.0f, 80.0f / 255.0f, 1.0f};
340 }

Referenced by impeller::testing::TEST_P().

## ◆ CornflowerBlue()

static constexpr Color impeller::Color::CornflowerBlue | ( |  | ) |
| inline static constexpr

Definition at line 342 of file color.h.

342 {
343 return {100.0f / 255.0f, 149.0f / 255.0f, 237.0f / 255.0f, 1.0f};
344 }

Referenced by impeller::testing::BlendModeTest(), and impeller::testing::TEST_P().

## ◆ Cornsilk()

static constexpr Color impeller::Color::Cornsilk | ( |  | ) |
| inline static constexpr

Definition at line 346 of file color.h.

346 {
347 return {255.0f / 255.0f, 248.0f / 255.0f, 220.0f / 255.0f, 1.0f};
348 }

## ◆ Crimson()

static constexpr Color impeller::Color::Crimson | ( |  | ) |
| inline static constexpr

Definition at line 350 of file color.h.

350 {
351 return {220.0f / 255.0f, 20.0f / 255.0f, 60.0f / 255.0f, 1.0f};
352 }

## ◆ Cyan()

static constexpr Color impeller::Color::Cyan | ( |  | ) |
| inline static constexpr

Definition at line 354 of file color.h.

354 {
355 return {0.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
356 }

## ◆ DarkBlue()

static constexpr Color impeller::Color::DarkBlue | ( |  | ) |
| inline static constexpr

Definition at line 358 of file color.h.

358 {
359 return {0.0f / 255.0f, 0.0f / 255.0f, 139.0f / 255.0f, 1.0f};
360 }

## ◆ DarkCyan()

static constexpr Color impeller::Color::DarkCyan | ( |  | ) |
| inline static constexpr

Definition at line 362 of file color.h.

362 {
363 return {0.0f / 255.0f, 139.0f / 255.0f, 139.0f / 255.0f, 1.0f};
364 }

## ◆ DarkGoldenrod()

static constexpr Color impeller::Color::DarkGoldenrod | ( |  | ) |
| inline static constexpr

Definition at line 366 of file color.h.

366 {
367 return {184.0f / 255.0f, 134.0f / 255.0f, 11.0f / 255.0f, 1.0f};
368 }

## ◆ DarkGray()

static constexpr Color impeller::Color::DarkGray | ( |  | ) |
| inline static constexpr

Definition at line 370 of file color.h.

370 {
371 return {169.0f / 255.0f, 169.0f / 255.0f, 169.0f / 255.0f, 1.0f};
372 }

## ◆ DarkGreen()

static constexpr Color impeller::Color::DarkGreen | ( |  | ) |
| inline static constexpr

Definition at line 374 of file color.h.

374 {
375 return {0.0f / 255.0f, 100.0f / 255.0f, 0.0f / 255.0f, 1.0f};
376 }

## ◆ DarkGrey()

static constexpr Color impeller::Color::DarkGrey | ( |  | ) |
| inline static constexpr

Definition at line 378 of file color.h.

378 {
379 return {169.0f / 255.0f, 169.0f / 255.0f, 169.0f / 255.0f, 1.0f};
380 }

## ◆ DarkKhaki()

static constexpr Color impeller::Color::DarkKhaki | ( |  | ) |
| inline static constexpr

Definition at line 382 of file color.h.

382 {
383 return {189.0f / 255.0f, 183.0f / 255.0f, 107.0f / 255.0f, 1.0f};
384 }

## ◆ DarkMagenta()

static constexpr Color impeller::Color::DarkMagenta | ( |  | ) |
| inline static constexpr

Definition at line 386 of file color.h.

386 {
387 return {139.0f / 255.0f, 0.0f / 255.0f, 139.0f / 255.0f, 1.0f};
388 }

## ◆ DarkOliveGreen()

static constexpr Color impeller::Color::DarkOliveGreen | ( |  | ) |
| inline static constexpr

Definition at line 390 of file color.h.

390 {
391 return {85.0f / 255.0f, 107.0f / 255.0f, 47.0f / 255.0f, 1.0f};
392 }

## ◆ DarkOrange()

static constexpr Color impeller::Color::DarkOrange | ( |  | ) |
| inline static constexpr

Definition at line 394 of file color.h.

394 {
395 return {255.0f / 255.0f, 140.0f / 255.0f, 0.0f / 255.0f, 1.0f};
396 }

## ◆ DarkOrchid()

static constexpr Color impeller::Color::DarkOrchid | ( |  | ) |
| inline static constexpr

Definition at line 398 of file color.h.

398 {
399 return {153.0f / 255.0f, 50.0f / 255.0f, 204.0f / 255.0f, 1.0f};
400 }

## ◆ DarkRed()

static constexpr Color impeller::Color::DarkRed | ( |  | ) |
| inline static constexpr

Definition at line 402 of file color.h.

402 {
403 return {139.0f / 255.0f, 0.0f / 255.0f, 0.0f / 255.0f, 1.0f};
404 }

## ◆ DarkSalmon()

static constexpr Color impeller::Color::DarkSalmon | ( |  | ) |
| inline static constexpr

Definition at line 406 of file color.h.

406 {
407 return {233.0f / 255.0f, 150.0f / 255.0f, 122.0f / 255.0f, 1.0f};
408 }

## ◆ DarkSeagreen()

static constexpr Color impeller::Color::DarkSeagreen | ( |  | ) |
| inline static constexpr

Definition at line 410 of file color.h.

410 {
411 return {143.0f / 255.0f, 188.0f / 255.0f, 143.0f / 255.0f, 1.0f};
412 }

## ◆ DarkSlateBlue()

static constexpr Color impeller::Color::DarkSlateBlue | ( |  | ) |
| inline static constexpr

Definition at line 414 of file color.h.

414 {
415 return {72.0f / 255.0f, 61.0f / 255.0f, 139.0f / 255.0f, 1.0f};
416 }

## ◆ DarkSlateGray()

static constexpr Color impeller::Color::DarkSlateGray | ( |  | ) |
| inline static constexpr

Definition at line 418 of file color.h.

418 {
419 return {47.0f / 255.0f, 79.0f / 255.0f, 79.0f / 255.0f, 1.0f};
420 }

Referenced by impeller::SurfaceGLES::WrapFBO(), impeller::SurfaceVK::WrapSwapchainImage(), and impeller::WrapTextureWithRenderTarget().

## ◆ DarkSlateGrey()

static constexpr Color impeller::Color::DarkSlateGrey | ( |  | ) |
| inline static constexpr

Definition at line 422 of file color.h.

422 {
423 return {47.0f / 255.0f, 79.0f / 255.0f, 79.0f / 255.0f, 1.0f};
424 }

## ◆ DarkTurquoise()

static constexpr Color impeller::Color::DarkTurquoise | ( |  | ) |
| inline static constexpr

Definition at line 426 of file color.h.

426 {
427 return {0.0f / 255.0f, 206.0f / 255.0f, 209.0f / 255.0f, 1.0f};
428 }

## ◆ DarkViolet()

static constexpr Color impeller::Color::DarkViolet | ( |  | ) |
| inline static constexpr

Definition at line 430 of file color.h.

430 {
431 return {148.0f / 255.0f, 0.0f / 255.0f, 211.0f / 255.0f, 1.0f};
432 }

## ◆ DeepPink()

static constexpr Color impeller::Color::DeepPink | ( |  | ) |
| inline static constexpr

Definition at line 434 of file color.h.

434 {
435 return {255.0f / 255.0f, 20.0f / 255.0f, 147.0f / 255.0f, 1.0f};
436 }

Referenced by impeller::testing::TEST_P().

## ◆ DeepSkyBlue()

static constexpr Color impeller::Color::DeepSkyBlue | ( |  | ) |
| inline static constexpr

Definition at line 438 of file color.h.

438 {
439 return {0.0f / 255.0f, 191.0f / 255.0f, 255.0f / 255.0f, 1.0f};
440 }

## ◆ DimGray()

static constexpr Color impeller::Color::DimGray | ( |  | ) |
| inline static constexpr

Definition at line 442 of file color.h.

442 {
443 return {105.0f / 255.0f, 105.0f / 255.0f, 105.0f / 255.0f, 1.0f};
444 }

## ◆ DimGrey()

static constexpr Color impeller::Color::DimGrey | ( |  | ) |
| inline static constexpr

Definition at line 446 of file color.h.

446 {
447 return {105.0f / 255.0f, 105.0f / 255.0f, 105.0f / 255.0f, 1.0f};
448 }

## ◆ DodgerBlue()

static constexpr Color impeller::Color::DodgerBlue | ( |  | ) |
| inline static constexpr

Definition at line 450 of file color.h.

450 {
451 return {30.0f / 255.0f, 144.0f / 255.0f, 255.0f / 255.0f, 1.0f};
452 }

## ◆ Firebrick()

static constexpr Color impeller::Color::Firebrick | ( |  | ) |
| inline static constexpr

Definition at line 454 of file color.h.

454 {
455 return {178.0f / 255.0f, 34.0f / 255.0f, 34.0f / 255.0f, 1.0f};
456 }

## ◆ FloralWhite()

static constexpr Color impeller::Color::FloralWhite | ( |  | ) |
| inline static constexpr

Definition at line 458 of file color.h.

458 {
459 return {255.0f / 255.0f, 250.0f / 255.0f, 240.0f / 255.0f, 1.0f};
460 }

## ◆ ForestGreen()

static constexpr Color impeller::Color::ForestGreen | ( |  | ) |
| inline static constexpr

Definition at line 462 of file color.h.

462 {
463 return {34.0f / 255.0f, 139.0f / 255.0f, 34.0f / 255.0f, 1.0f};
464 }

## ◆ Fuchsia()

static constexpr Color impeller::Color::Fuchsia | ( |  | ) |
| inline static constexpr

Definition at line 466 of file color.h.

466 {
467 return {255.0f / 255.0f, 0.0f / 255.0f, 255.0f / 255.0f, 1.0f};
468 }

Referenced by impeller::interop::testing::TEST_P().

## ◆ Gainsboro()

static constexpr Color impeller::Color::Gainsboro | ( |  | ) |
| inline static constexpr

Definition at line 470 of file color.h.

470 {
471 return {220.0f / 255.0f, 220.0f / 255.0f, 220.0f / 255.0f, 1.0f};
472 }

## ◆ Ghostwhite()

static constexpr Color impeller::Color::Ghostwhite | ( |  | ) |
| inline static constexpr

Definition at line 474 of file color.h.

474 {
475 return {248.0f / 255.0f, 248.0f / 255.0f, 255.0f / 255.0f, 1.0f};
476 }

## ◆ Gold()

static constexpr Color impeller::Color::Gold | ( |  | ) |
| inline static constexpr

Definition at line 478 of file color.h.

478 {
479 return {255.0f / 255.0f, 215.0f / 255.0f, 0.0f / 255.0f, 1.0f};
480 }

## ◆ Goldenrod()

static constexpr Color impeller::Color::Goldenrod | ( |  | ) |
| inline static constexpr

Definition at line 482 of file color.h.

482 {
483 return {218.0f / 255.0f, 165.0f / 255.0f, 32.0f / 255.0f, 1.0f};
484 }

## ◆ Gray()

static constexpr Color impeller::Color::Gray | ( |  | ) |
| inline static constexpr

Definition at line 486 of file color.h.

486 {
487 return {128.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
488 }

## ◆ Green()

static constexpr Color impeller::Color::Green | ( |  | ) |
| inline static constexpr

Definition at line 274 of file color.h.

274 { return {0.0f, 1.0f, 0.0f, 1.0f}; }

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ GreenYellow()

static constexpr Color impeller::Color::GreenYellow | ( |  | ) |
| inline static constexpr

Definition at line 490 of file color.h.

490 {
491 return {173.0f / 255.0f, 255.0f / 255.0f, 47.0f / 255.0f, 1.0f};
492 }

## ◆ Grey()

static constexpr Color impeller::Color::Grey | ( |  | ) |
| inline static constexpr

Definition at line 494 of file color.h.

494 {
495 return {128.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
496 }

## ◆ Honeydew()

static constexpr Color impeller::Color::Honeydew | ( |  | ) |
| inline static constexpr

Definition at line 498 of file color.h.

498 {
499 return {240.0f / 255.0f, 255.0f / 255.0f, 240.0f / 255.0f, 1.0f};
500 }

## ◆ HotPink()

static constexpr Color impeller::Color::HotPink | ( |  | ) |
| inline static constexpr

Definition at line 502 of file color.h.

502 {
503 return {255.0f / 255.0f, 105.0f / 255.0f, 180.0f / 255.0f, 1.0f};
504 }

## ◆ IndianRed()

static constexpr Color impeller::Color::IndianRed | ( |  | ) |
| inline static constexpr

Definition at line 506 of file color.h.

506 {
507 return {205.0f / 255.0f, 92.0f / 255.0f, 92.0f / 255.0f, 1.0f};
508 }

## ◆ Indigo()

static constexpr Color impeller::Color::Indigo | ( |  | ) |
| inline static constexpr

Definition at line 510 of file color.h.

510 {
511 return {75.0f / 255.0f, 0.0f / 255.0f, 130.0f / 255.0f, 1.0f};
512 }

## ◆ IsOpaque()

constexpr bool impeller::Color::IsOpaque | ( |  | ) | const
| inline constexpr

Definition at line 894 of file color.h.

894 { return alpha == 1.0f; }

References alpha.

Referenced by impeller::SolidColorContents::IsOpaque().

## ◆ IsTransparent()

constexpr bool impeller::Color::IsTransparent | ( |  | ) | const
| inline constexpr

Definition at line 892 of file color.h.

892 { return alpha == 0.0f; }

References alpha.

Referenced by impeller::TextContents::Render().

## ◆ Ivory()

static constexpr Color impeller::Color::Ivory | ( |  | ) |
| inline static constexpr

Definition at line 514 of file color.h.

514 {
515 return {255.0f / 255.0f, 255.0f / 255.0f, 240.0f / 255.0f, 1.0f};
516 }

## ◆ Khaki()

static constexpr Color impeller::Color::Khaki | ( |  | ) |
| inline static constexpr

Definition at line 518 of file color.h.

518 {
519 return {240.0f / 255.0f, 230.0f / 255.0f, 140.0f / 255.0f, 1.0f};
520 }

## ◆ Lavender()

static constexpr Color impeller::Color::Lavender | ( |  | ) |
| inline static constexpr

Definition at line 522 of file color.h.

522 {
523 return {230.0f / 255.0f, 230.0f / 255.0f, 250.0f / 255.0f, 1.0f};
524 }

## ◆ LavenderBlush()

static constexpr Color impeller::Color::LavenderBlush | ( |  | ) |
| inline static constexpr

Definition at line 526 of file color.h.

526 {
527 return {255.0f / 255.0f, 240.0f / 255.0f, 245.0f / 255.0f, 1.0f};
528 }

## ◆ LawnGreen()

static constexpr Color impeller::Color::LawnGreen | ( |  | ) |
| inline static constexpr

Definition at line 530 of file color.h.

530 {
531 return {124.0f / 255.0f, 252.0f / 255.0f, 0.0f / 255.0f, 1.0f};
532 }

## ◆ LemonChiffon()

static constexpr Color impeller::Color::LemonChiffon | ( |  | ) |
| inline static constexpr

Definition at line 534 of file color.h.

534 {
535 return {255.0f / 255.0f, 250.0f / 255.0f, 205.0f / 255.0f, 1.0f};
536 }

## ◆ Lerp()

constexpr static Color impeller::Color::Lerp | ( | Color | a,
|  | Color | b,
|  | Scalar | t
| ) |  |
| inline static constexpr

Return a color that is linearly interpolated between colors a and b, according to the value of t.

Parameters

  a | The lower color.
  b | The upper color.
  t | A value between 0.0f and 1.0f, inclusive.

Returns
  constexpr Color

Definition at line 232 of file color.h.

232 {
233 return a + (b - a) * t;
234 }

References impeller::saturated::b.

Referenced by impeller::CreateGradientBuffer(), and impeller::testing::TEST().

## ◆ LightBlue()

static constexpr Color impeller::Color::LightBlue | ( |  | ) |
| inline static constexpr

Definition at line 538 of file color.h.

538 {
539 return {173.0f / 255.0f, 216.0f / 255.0f, 230.0f / 255.0f, 1.0f};
540 }

## ◆ LightCoral()

static constexpr Color impeller::Color::LightCoral | ( |  | ) |
| inline static constexpr

Definition at line 542 of file color.h.

542 {
543 return {240.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
544 }

## ◆ LightCyan()

static constexpr Color impeller::Color::LightCyan | ( |  | ) |
| inline static constexpr

Definition at line 546 of file color.h.

546 {
547 return {224.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
548 }

## ◆ LightGoldenrodYellow()

static constexpr Color impeller::Color::LightGoldenrodYellow | ( |  | ) |
| inline static constexpr

Definition at line 550 of file color.h.

550 {
551 return {50.0f / 255.0f, 250.0f / 255.0f, 210.0f / 255.0f, 1.0f};
552 }

## ◆ LightGray()

static constexpr Color impeller::Color::LightGray | ( |  | ) |
| inline static constexpr

Definition at line 554 of file color.h.

554 {
555 return {211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f};
556 }

## ◆ LightGreen()

static constexpr Color impeller::Color::LightGreen | ( |  | ) |
| inline static constexpr

Definition at line 558 of file color.h.

558 {
559 return {144.0f / 255.0f, 238.0f / 255.0f, 144.0f / 255.0f, 1.0f};
560 }

## ◆ LightGrey()

static constexpr Color impeller::Color::LightGrey | ( |  | ) |
| inline static constexpr

Definition at line 562 of file color.h.

562 {
563 return {211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f};
564 }

## ◆ LightPink()

static constexpr Color impeller::Color::LightPink | ( |  | ) |
| inline static constexpr

Definition at line 566 of file color.h.

566 {
567 return {255.0f / 255.0f, 182.0f / 255.0f, 193.0f / 255.0f, 1.0f};
568 }

## ◆ LightSalmon()

static constexpr Color impeller::Color::LightSalmon | ( |  | ) |
| inline static constexpr

Definition at line 570 of file color.h.

570 {
571 return {255.0f / 255.0f, 160.0f / 255.0f, 122.0f / 255.0f, 1.0f};
572 }

## ◆ LightSeaGreen()

static constexpr Color impeller::Color::LightSeaGreen | ( |  | ) |
| inline static constexpr

Definition at line 574 of file color.h.

574 {
575 return {32.0f / 255.0f, 178.0f / 255.0f, 170.0f / 255.0f, 1.0f};
576 }

## ◆ LightSkyBlue()

static constexpr Color impeller::Color::LightSkyBlue | ( |  | ) |
| inline static constexpr

Definition at line 578 of file color.h.

578 {
579 return {135.0f / 255.0f, 206.0f / 255.0f, 250.0f / 255.0f, 1.0f};
580 }

## ◆ LightSlateGray()

static constexpr Color impeller::Color::LightSlateGray | ( |  | ) |
| inline static constexpr

Definition at line 582 of file color.h.

582 {
583 return {119.0f / 255.0f, 136.0f / 255.0f, 153.0f / 255.0f, 1.0f};
584 }

## ◆ LightSlateGrey()

static constexpr Color impeller::Color::LightSlateGrey | ( |  | ) |
| inline static constexpr

Definition at line 586 of file color.h.

586 {
587 return {119.0f / 255.0f, 136.0f / 255.0f, 153.0f / 255.0f, 1.0f};
588 }

## ◆ LightSteelBlue()

static constexpr Color impeller::Color::LightSteelBlue | ( |  | ) |
| inline static constexpr

Definition at line 590 of file color.h.

590 {
591 return {176.0f / 255.0f, 196.0f / 255.0f, 222.0f / 255.0f, 1.0f};
592 }

## ◆ LightYellow()

static constexpr Color impeller::Color::LightYellow | ( |  | ) |
| inline static constexpr

Definition at line 594 of file color.h.

594 {
595 return {255.0f / 255.0f, 255.0f / 255.0f, 224.0f / 255.0f, 1.0f};
596 }

## ◆ Lime()

static constexpr Color impeller::Color::Lime | ( |  | ) |
| inline static constexpr

Definition at line 598 of file color.h.

598 {
599 return {0.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
600 }

## ◆ LimeGreen()

static constexpr Color impeller::Color::LimeGreen | ( |  | ) |
| inline static constexpr

Definition at line 602 of file color.h.

602 {
603 return {50.0f / 255.0f, 205.0f / 255.0f, 50.0f / 255.0f, 1.0f};
604 }

Referenced by impeller::testing::BlendModeTest(), and impeller::testing::TEST_P().

## ◆ LinearToSRGB()

Color impeller::Color::LinearToSRGB | ( |  | ) | const

Convert the color from linear space to sRGB space.

       The color is assumed to be unpremultiplied. If the color is
       premultipled, the conversion output will be incorrect.

Definition at line 311 of file color.cc.

311 {
312 static auto conversion = [](Scalar component) {
313 if (component <= 0.0031308) {
314 return component * 12.92;
315 }
316 return 1.055 * pow(component, (1.0 / 2.4)) - 0.055;
317 };
318
319 return Color(conversion(red), conversion(green), conversion(blue), alpha);
320 }

References alpha, blue, Color(), green, and red.

Referenced by impeller::testing::TEST().

## ◆ Linen()

static constexpr Color impeller::Color::Linen | ( |  | ) |
| inline static constexpr

Definition at line 606 of file color.h.

606 {
607 return {250.0f / 255.0f, 240.0f / 255.0f, 230.0f / 255.0f, 1.0f};
608 }

## ◆ Magenta()

static constexpr Color impeller::Color::Magenta | ( |  | ) |
| inline static constexpr

Definition at line 610 of file color.h.

610 {
611 return {255.0f / 255.0f, 0.0f / 255.0f, 255.0f / 255.0f, 1.0f};
612 }

## ◆ MakeRGBA8()

static constexpr Color impeller::Color::MakeRGBA8 | ( | uint8_t | r,
|  | uint8_t | g,
|  | uint8_t | b,
|  | uint8_t | a
| ) |  |
| inline static constexpr

Definition at line 152 of file color.h.

152 {
153 return Color(
154 static_cast<Scalar>(r) / 255.0f, static_cast<Scalar>(g) / 255.0f,
155 static_cast<Scalar>(b) / 255.0f, static_cast<Scalar>(a) / 255.0f);
156 }

References impeller::saturated::b, and Color().

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ Maroon()

static constexpr Color impeller::Color::Maroon | ( |  | ) |
| inline static constexpr

Definition at line 614 of file color.h.

614 {
615 return {128.0f / 255.0f, 0.0f / 255.0f, 0.0f / 255.0f, 1.0f};
616 }

## ◆ MediumAquamarine()

static constexpr Color impeller::Color::MediumAquamarine | ( |  | ) |
| inline static constexpr

Definition at line 618 of file color.h.

618 {
619 return {102.0f / 255.0f, 205.0f / 255.0f, 170.0f / 255.0f, 1.0f};
620 }

## ◆ MediumBlue()

static constexpr Color impeller::Color::MediumBlue | ( |  | ) |
| inline static constexpr

Definition at line 622 of file color.h.

622 {
623 return {0.0f / 255.0f, 0.0f / 255.0f, 205.0f / 255.0f, 1.0f};
624 }

## ◆ MediumOrchid()

static constexpr Color impeller::Color::MediumOrchid | ( |  | ) |
| inline static constexpr

Definition at line 626 of file color.h.

626 {
627 return {186.0f / 255.0f, 85.0f / 255.0f, 211.0f / 255.0f, 1.0f};
628 }

## ◆ MediumPurple()

static constexpr Color impeller::Color::MediumPurple | ( |  | ) |
| inline static constexpr

Definition at line 630 of file color.h.

630 {
631 return {147.0f / 255.0f, 112.0f / 255.0f, 219.0f / 255.0f, 1.0f};
632 }

## ◆ MediumSeagreen()

static constexpr Color impeller::Color::MediumSeagreen | ( |  | ) |
| inline static constexpr

Definition at line 634 of file color.h.

634 {
635 return {60.0f / 255.0f, 179.0f / 255.0f, 113.0f / 255.0f, 1.0f};
636 }

## ◆ MediumSlateBlue()

static constexpr Color impeller::Color::MediumSlateBlue | ( |  | ) |
| inline static constexpr

Definition at line 638 of file color.h.

638 {
639 return {123.0f / 255.0f, 104.0f / 255.0f, 238.0f / 255.0f, 1.0f};
640 }

## ◆ MediumSpringGreen()

static constexpr Color impeller::Color::MediumSpringGreen | ( |  | ) |
| inline static constexpr

Definition at line 642 of file color.h.

642 {
643 return {0.0f / 255.0f, 250.0f / 255.0f, 154.0f / 255.0f, 1.0f};
644 }

## ◆ MediumTurquoise()

static constexpr Color impeller::Color::MediumTurquoise | ( |  | ) |
| inline static constexpr

Definition at line 646 of file color.h.

646 {
647 return {72.0f / 255.0f, 209.0f / 255.0f, 204.0f / 255.0f, 1.0f};
648 }

Referenced by impeller::testing::TEST_P().

## ◆ MediumVioletRed()

static constexpr Color impeller::Color::MediumVioletRed | ( |  | ) |
| inline static constexpr

Definition at line 650 of file color.h.

650 {
651 return {199.0f / 255.0f, 21.0f / 255.0f, 133.0f / 255.0f, 1.0f};
652 }

## ◆ MidnightBlue()

static constexpr Color impeller::Color::MidnightBlue | ( |  | ) |
| inline static constexpr

Definition at line 654 of file color.h.

654 {
655 return {25.0f / 255.0f, 25.0f / 255.0f, 112.0f / 255.0f, 1.0f};
656 }

## ◆ MintCream()

static constexpr Color impeller::Color::MintCream | ( |  | ) |
| inline static constexpr

Definition at line 658 of file color.h.

658 {
659 return {245.0f / 255.0f, 255.0f / 255.0f, 250.0f / 255.0f, 1.0f};
660 }

Referenced by impeller::testing::TEST_P().

## ◆ MistyRose()

static constexpr Color impeller::Color::MistyRose | ( |  | ) |
| inline static constexpr

Definition at line 662 of file color.h.

662 {
663 return {255.0f / 255.0f, 228.0f / 255.0f, 225.0f / 255.0f, 1.0f};
664 }

## ◆ Moccasin()

static constexpr Color impeller::Color::Moccasin | ( |  | ) |
| inline static constexpr

Definition at line 666 of file color.h.

666 {
667 return {255.0f / 255.0f, 228.0f / 255.0f, 181.0f / 255.0f, 1.0f};
668 }

## ◆ NavajoWhite()

static constexpr Color impeller::Color::NavajoWhite | ( |  | ) |
| inline static constexpr

Definition at line 670 of file color.h.

670 {
671 return {255.0f / 255.0f, 222.0f / 255.0f, 173.0f / 255.0f, 1.0f};
672 }

## ◆ Navy()

static constexpr Color impeller::Color::Navy | ( |  | ) |
| inline static constexpr

Definition at line 674 of file color.h.

674 {
675 return {0.0f / 255.0f, 0.0f / 255.0f, 128.0f / 255.0f, 1.0f};
676 }

## ◆ OldLace()

static constexpr Color impeller::Color::OldLace | ( |  | ) |
| inline static constexpr

Definition at line 678 of file color.h.

678 {
679 return {253.0f / 255.0f, 245.0f / 255.0f, 230.0f / 255.0f, 1.0f};
680 }

## ◆ Olive()

static constexpr Color impeller::Color::Olive | ( |  | ) |
| inline static constexpr

Definition at line 682 of file color.h.

682 {
683 return {128.0f / 255.0f, 128.0f / 255.0f, 0.0f / 255.0f, 1.0f};
684 }

## ◆ OliveDrab()

static constexpr Color impeller::Color::OliveDrab | ( |  | ) |
| inline static constexpr

Definition at line 686 of file color.h.

686 {
687 return {107.0f / 255.0f, 142.0f / 255.0f, 35.0f / 255.0f, 1.0f};
688 }

## ◆ operator*() [1/2]

constexpr Color impeller::Color::operator* | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 192 of file color.h.

192 {
193 return {red * c.red, green * c.green, blue * c.blue, alpha * c.alpha};
194 }

References alpha, blue, green, and red.

## ◆ operator*() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator* | ( | T | value | ) | const
| inline constexpr

Definition at line 197 of file color.h.

197 {
198 auto v = static_cast<Scalar>(value);
199 return {red * v, green * v, blue * v, alpha * v};
200 }

References alpha, blue, green, red, and value.

## ◆ operator+() [1/2]

constexpr Color impeller::Color::operator+ | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 172 of file color.h.

172 {
173 return {red + c.red, green + c.green, blue + c.blue, alpha + c.alpha};
174 }

References alpha, blue, green, and red.

## ◆ operator+() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator+ | ( | T | value | ) | const
| inline constexpr

Definition at line 177 of file color.h.

177 {
178 auto v = static_cast<Scalar>(value);
179 return {red + v, green + v, blue + v, alpha + v};
180 }

References alpha, blue, green, red, and value.

## ◆ operator-() [1/2]

constexpr Color impeller::Color::operator- | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 182 of file color.h.

182 {
183 return {red - c.red, green - c.green, blue - c.blue, alpha - c.alpha};
184 }

References alpha, blue, green, and red.

## ◆ operator-() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator- | ( | T | value | ) | const
| inline constexpr

Definition at line 187 of file color.h.

187 {
188 auto v = static_cast<Scalar>(value);
189 return {red - v, green - v, blue - v, alpha - v};
190 }

References alpha, blue, green, red, and value.

## ◆ operator/() [1/2]

constexpr Color impeller::Color::operator/ | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 202 of file color.h.

202 {
203 return {red * c.red, green * c.green, blue * c.blue, alpha * c.alpha};
204 }

References alpha, blue, green, and red.

## ◆ operator/() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator/ | ( | T | value | ) | const
| inline constexpr

Definition at line 207 of file color.h.

207 {
208 auto v = static_cast<Scalar>(value);
209 return {red / v, green / v, blue / v, alpha / v};
210 }

References alpha, blue, green, red, and value.

## ◆ operator==()

constexpr bool impeller::Color::operator== | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 167 of file color.h.

167 {
168 return ScalarNearlyEqual(red, c.red) && ScalarNearlyEqual(green, c.green) &&
169 ScalarNearlyEqual(blue, c.blue) && ScalarNearlyEqual(alpha, c.alpha);
170 }
impeller::ScalarNearlyEqual
constexpr bool ScalarNearlyEqual(Scalar x, Scalar y, Scalar tolerance=kEhCloseEnough)
Definition: scalar.h:36

References alpha, blue, green, red, and impeller::ScalarNearlyEqual().

## ◆ Orange()

static constexpr Color impeller::Color::Orange | ( |  | ) |
| inline static constexpr

Definition at line 690 of file color.h.

690 {
691 return {255.0f / 255.0f, 165.0f / 255.0f, 0.0f / 255.0f, 1.0f};
692 }

## ◆ OrangeRed()

static constexpr Color impeller::Color::OrangeRed | ( |  | ) |
| inline static constexpr

Definition at line 694 of file color.h.

694 {
695 return {255.0f / 255.0f, 69.0f / 255.0f, 0.0f / 255.0f, 1.0f};
696 }

Referenced by impeller::testing::TEST_P().

## ◆ Orchid()

static constexpr Color impeller::Color::Orchid | ( |  | ) |
| inline static constexpr

Definition at line 698 of file color.h.

698 {
699 return {218.0f / 255.0f, 112.0f / 255.0f, 214.0f / 255.0f, 1.0f};
700 }

## ◆ PaleGoldenrod()

static constexpr Color impeller::Color::PaleGoldenrod | ( |  | ) |
| inline static constexpr

Definition at line 702 of file color.h.

702 {
703 return {238.0f / 255.0f, 232.0f / 255.0f, 170.0f / 255.0f, 1.0f};
704 }

## ◆ PaleGreen()

static constexpr Color impeller::Color::PaleGreen | ( |  | ) |
| inline static constexpr

Definition at line 706 of file color.h.

706 {
707 return {152.0f / 255.0f, 251.0f / 255.0f, 152.0f / 255.0f, 1.0f};
708 }

## ◆ PaleTurquoise()

static constexpr Color impeller::Color::PaleTurquoise | ( |  | ) |
| inline static constexpr

Definition at line 710 of file color.h.

710 {
711 return {175.0f / 255.0f, 238.0f / 255.0f, 238.0f / 255.0f, 1.0f};
712 }

## ◆ PaleVioletRed()

static constexpr Color impeller::Color::PaleVioletRed | ( |  | ) |
| inline static constexpr

Definition at line 714 of file color.h.

714 {
715 return {219.0f / 255.0f, 112.0f / 255.0f, 147.0f / 255.0f, 1.0f};
716 }

## ◆ PapayaWhip()

static constexpr Color impeller::Color::PapayaWhip | ( |  | ) |
| inline static constexpr

Definition at line 718 of file color.h.

718 {
719 return {255.0f / 255.0f, 239.0f / 255.0f, 213.0f / 255.0f, 1.0f};
720 }

## ◆ Peachpuff()

static constexpr Color impeller::Color::Peachpuff | ( |  | ) |
| inline static constexpr

Definition at line 722 of file color.h.

722 {
723 return {255.0f / 255.0f, 218.0f / 255.0f, 185.0f / 255.0f, 1.0f};
724 }

## ◆ Peru()

static constexpr Color impeller::Color::Peru | ( |  | ) |
| inline static constexpr

Definition at line 726 of file color.h.

726 {
727 return {205.0f / 255.0f, 133.0f / 255.0f, 63.0f / 255.0f, 1.0f};
728 }

## ◆ Pink()

static constexpr Color impeller::Color::Pink | ( |  | ) |
| inline static constexpr

Definition at line 730 of file color.h.

730 {
731 return {255.0f / 255.0f, 192.0f / 255.0f, 203.0f / 255.0f, 1.0f};
732 }

## ◆ Plum()

static constexpr Color impeller::Color::Plum | ( |  | ) |
| inline static constexpr

Definition at line 734 of file color.h.

734 {
735 return {221.0f / 255.0f, 160.0f / 255.0f, 221.0f / 255.0f, 1.0f};
736 }

## ◆ PowderBlue()

static constexpr Color impeller::Color::PowderBlue | ( |  | ) |
| inline static constexpr

Definition at line 738 of file color.h.

738 {
739 return {176.0f / 255.0f, 224.0f / 255.0f, 230.0f / 255.0f, 1.0f};
740 }

## ◆ Premultiply()

constexpr Color impeller::Color::Premultiply | ( |  | ) | const
| inline constexpr

Definition at line 212 of file color.h.

212 {
213 return {red * alpha, green * alpha, blue * alpha, alpha};
214 }

References alpha, blue, green, and red.

Referenced by impeller::ApplyBlendedColor(), Blend(), impeller::DlAtlasGeometry::CreateBlendVertexBuffer(), impeller::DrawImageRectAtlasGeometry::CreateBlendVertexBuffer(), impeller::DlVerticesGeometry::GetPositionUVColorBuffer(), impeller::SolidColorContents::Render(), impeller::TextContents::Render(), impeller::SolidRRectLikeBlurContents::SetColor(), impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ Purple()

static constexpr Color impeller::Color::Purple | ( |  | ) |
| inline static constexpr

Definition at line 742 of file color.h.

742 {
743 return {128.0f / 255.0f, 0.0f / 255.0f, 128.0f / 255.0f, 1.0f};
744 }

## ◆ Random()

static Color impeller::Color::Random | ( |  | ) |
| inline static

Definition at line 850 of file color.h.

850 {
851 return {
852 // This method is not used for cryptographic purposes.
853 // NOLINTBEGIN(clang-analyzer-security.insecureAPI.rand)
854 static_cast<Scalar>((std::rand() % 255) / 255.0f), //
855 static_cast<Scalar>((std::rand() % 255) / 255.0f), //
856 static_cast<Scalar>((std::rand() % 255) / 255.0f), //
857 // NOLINTEND(clang-analyzer-security.insecureAPI.rand)
858 1.0f //
859
860 };
861 }

Referenced by impeller::testing::TEST_P().

## ◆ Red()

static constexpr Color impeller::Color::Red | ( |  | ) |
| inline static constexpr

Definition at line 272 of file color.h.

272 { return {1.0f, 0.0f, 0.0f, 1.0f}; }

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ RosyBrown()

static constexpr Color impeller::Color::RosyBrown | ( |  | ) |
| inline static constexpr

Definition at line 746 of file color.h.

746 {
747 return {188.0f / 255.0f, 143.0f / 255.0f, 143.0f / 255.0f, 1.0f};
748 }

## ◆ RoyalBlue()

static constexpr Color impeller::Color::RoyalBlue | ( |  | ) |
| inline static constexpr

Definition at line 750 of file color.h.

750 {
751 return {65.0f / 255.0f, 105.0f / 255.0f, 225.0f / 255.0f, 1.0f};
752 }

## ◆ SaddleBrown()

static constexpr Color impeller::Color::SaddleBrown | ( |  | ) |
| inline static constexpr

Definition at line 754 of file color.h.

754 {
755 return {139.0f / 255.0f, 69.0f / 255.0f, 19.0f / 255.0f, 1.0f};
756 }

## ◆ Salmon()

static constexpr Color impeller::Color::Salmon | ( |  | ) |
| inline static constexpr

Definition at line 758 of file color.h.

758 {
759 return {250.0f / 255.0f, 128.0f / 255.0f, 114.0f / 255.0f, 1.0f};
760 }

## ◆ SandyBrown()

static constexpr Color impeller::Color::SandyBrown | ( |  | ) |
| inline static constexpr

Definition at line 762 of file color.h.

762 {
763 return {244.0f / 255.0f, 164.0f / 255.0f, 96.0f / 255.0f, 1.0f};
764 }

## ◆ Seagreen()

static constexpr Color impeller::Color::Seagreen | ( |  | ) |
| inline static constexpr

Definition at line 766 of file color.h.

766 {
767 return {46.0f / 255.0f, 139.0f / 255.0f, 87.0f / 255.0f, 1.0f};
768 }

## ◆ Seashell()

static constexpr Color impeller::Color::Seashell | ( |  | ) |
| inline static constexpr

Definition at line 770 of file color.h.

770 {
771 return {255.0f / 255.0f, 245.0f / 255.0f, 238.0f / 255.0f, 1.0f};
772 }

## ◆ Sienna()

static constexpr Color impeller::Color::Sienna | ( |  | ) |
| inline static constexpr

Definition at line 774 of file color.h.

774 {
775 return {160.0f / 255.0f, 82.0f / 255.0f, 45.0f / 255.0f, 1.0f};
776 }

## ◆ Silver()

static constexpr Color impeller::Color::Silver | ( |  | ) |
| inline static constexpr

Definition at line 778 of file color.h.

778 {
779 return {192.0f / 255.0f, 192.0f / 255.0f, 192.0f / 255.0f, 1.0f};
780 }

## ◆ SkyBlue()

static constexpr Color impeller::Color::SkyBlue | ( |  | ) |
| inline static constexpr

Definition at line 782 of file color.h.

782 {
783 return {135.0f / 255.0f, 206.0f / 255.0f, 235.0f / 255.0f, 1.0f};
784 }

## ◆ SlateBlue()

static constexpr Color impeller::Color::SlateBlue | ( |  | ) |
| inline static constexpr

Definition at line 786 of file color.h.

786 {
787 return {106.0f / 255.0f, 90.0f / 255.0f, 205.0f / 255.0f, 1.0f};
788 }

## ◆ SlateGray()

static constexpr Color impeller::Color::SlateGray | ( |  | ) |
| inline static constexpr

Definition at line 790 of file color.h.

790 {
791 return {112.0f / 255.0f, 128.0f / 255.0f, 144.0f / 255.0f, 1.0f};
792 }

## ◆ SlateGrey()

static constexpr Color impeller::Color::SlateGrey | ( |  | ) |
| inline static constexpr

Definition at line 794 of file color.h.

794 {
795 return {112.0f / 255.0f, 128.0f / 255.0f, 144.0f / 255.0f, 1.0f};
796 }

## ◆ Snow()

static constexpr Color impeller::Color::Snow | ( |  | ) |
| inline static constexpr

Definition at line 798 of file color.h.

798 {
799 return {255.0f / 255.0f, 250.0f / 255.0f, 250.0f / 255.0f, 1.0f};
800 }

## ◆ SpringGreen()

static constexpr Color impeller::Color::SpringGreen | ( |  | ) |
| inline static constexpr

Definition at line 802 of file color.h.

802 {
803 return {0.0f / 255.0f, 255.0f / 255.0f, 127.0f / 255.0f, 1.0f};
804 }

## ◆ SRGBToLinear()

Color impeller::Color::SRGBToLinear | ( |  | ) | const

Convert the color from sRGB space to linear space.

       The color is assumed to be unpremultiplied. If the color is
       premultipled, the conversion output will be incorrect.

Definition at line 322 of file color.cc.

322 {
323 static auto conversion = [](Scalar component) {
324 if (component <= 0.04045) {
325 return component / 12.92;
326 }
327 return pow((component + 0.055) / 1.055, 2.4);
328 };
329
330 return Color(conversion(red), conversion(green), conversion(blue), alpha);
331 }

References alpha, blue, Color(), green, and red.

Referenced by impeller::testing::TEST().

## ◆ SteelBlue()

static constexpr Color impeller::Color::SteelBlue | ( |  | ) |
| inline static constexpr

Definition at line 806 of file color.h.

806 {
807 return {70.0f / 255.0f, 130.0f / 255.0f, 180.0f / 255.0f, 1.0f};
808 }

## ◆ Tan()

static constexpr Color impeller::Color::Tan | ( |  | ) |
| inline static constexpr

Definition at line 810 of file color.h.

810 {
811 return {210.0f / 255.0f, 180.0f / 255.0f, 140.0f / 255.0f, 1.0f};
812 }

## ◆ Teal()

static constexpr Color impeller::Color::Teal | ( |  | ) |
| inline static constexpr

Definition at line 814 of file color.h.

814 {
815 return {0.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
816 }

## ◆ Thistle()

static constexpr Color impeller::Color::Thistle | ( |  | ) |
| inline static constexpr

Definition at line 818 of file color.h.

818 {
819 return {216.0f / 255.0f, 191.0f / 255.0f, 216.0f / 255.0f, 1.0f};
820 }

## ◆ ToARGB()

uint32_t impeller::Color::ToARGB | ( |  | ) | const
| inline

Convert to ARGB 32 bit color.

Returns
  constexpr uint32_t

Definition at line 259 of file color.h.

259 {
260 std::array<uint8_t, 4> result = ToR8G8B8A8();
261 return result[3] << 24 | result[0] << 16 | result[1] << 8 | result[2];
262 }
impeller::Color::ToR8G8B8A8
std::array< uint8_t, 4 > ToR8G8B8A8() const
Convert to R8G8B8A8 representation.
Definition: color.h:246

References ToR8G8B8A8().

Referenced by impeller::testing::CanRenderConicalGradientWithDithering(), impeller::testing::CanRenderRadialGradientWithDithering(), impeller::testing::CanRenderSweepGradientWithDithering(), impeller::GlyphProperties::Equal::operator()(), and impeller::testing::TEST_P().

## ◆ ToIColor()

static uint32_t impeller::Color::ToIColor | ( | Color | color | ) |
| inline static

Convert this color to a 32-bit representation.

Definition at line 159 of file color.h.

159 {
160 return (((std::lround(color.alpha * 255.0f) & 0xff) << 24) |
161 ((std::lround(color.red * 255.0f) & 0xff) << 16) |
162 ((std::lround(color.green * 255.0f) & 0xff) << 8) |
163 ((std::lround(color.blue * 255.0f) & 0xff) << 0)) &
164 0xFFFFFFFF;
165 }

References alpha, blue, green, and red.

Referenced by impeller::testing::TEST(), and impeller::testing::toColor().

## ◆ Tomato()

static constexpr Color impeller::Color::Tomato | ( |  | ) |
| inline static constexpr

Definition at line 822 of file color.h.

822 {
823 return {255.0f / 255.0f, 99.0f / 255.0f, 71.0f / 255.0f, 1.0f};
824 }

## ◆ ToR8G8B8A8()

std::array<uint8_t, 4> impeller::Color::ToR8G8B8A8 | ( |  | ) | const
| inline

Convert to R8G8B8A8 representation.

Returns
  constexpr std::array<u_int8, 4>

Definition at line 246 of file color.h.

246 {
247 uint8_t r = std::round(red * 255.0f);
248 uint8_t g = std::round(green * 255.0f);
249 uint8_t b = std::round(blue * 255.0f);
250 uint8_t a = std::round(alpha * 255.0f);
251 return {r, g, b, a};
252 }

References alpha, impeller::saturated::b, blue, green, and red.

Referenced by impeller::AppendColor(), impeller::ContentContext::ContentContext(), impeller::testing::TEST(), impeller::interop::testing::TEST_P(), and ToARGB().

## ◆ Turquoise()

static constexpr Color impeller::Color::Turquoise | ( |  | ) |
| inline static constexpr

Definition at line 826 of file color.h.

826 {
827 return {64.0f / 255.0f, 224.0f / 255.0f, 208.0f / 255.0f, 1.0f};
828 }

## ◆ Unpremultiply()

constexpr Color impeller::Color::Unpremultiply | ( |  | ) | const
| inline constexpr

Definition at line 216 of file color.h.

216 {
217 if (ScalarNearlyEqual(alpha, 0.0f)) {
218 return Color::BlackTransparent();
219 }
220 return {red / alpha, green / alpha, blue / alpha, alpha};
221 }

References alpha, BlackTransparent(), blue, green, red, and impeller::ScalarNearlyEqual().

Referenced by impeller::DoColorBlend(), impeller::DoColorBlendComponents(), and impeller::testing::TEST().

## ◆ Violet()

static constexpr Color impeller::Color::Violet | ( |  | ) |
| inline static constexpr

Definition at line 830 of file color.h.

830 {
831 return {238.0f / 255.0f, 130.0f / 255.0f, 238.0f / 255.0f, 1.0f};
832 }

## ◆ Wheat()

static constexpr Color impeller::Color::Wheat | ( |  | ) |
| inline static constexpr

Definition at line 834 of file color.h.

834 {
835 return {245.0f / 255.0f, 222.0f / 255.0f, 179.0f / 255.0f, 1.0f};
836 }

## ◆ White()

static constexpr Color impeller::Color::White | ( |  | ) |
| inline static constexpr

Definition at line 264 of file color.h.

264 { return {1.0f, 1.0f, 1.0f, 1.0f}; }

Referenced by impeller::testing::BlendModeTest(), impeller::SolidRRectLikeBlurContents::Render(), impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ Whitesmoke()

static constexpr Color impeller::Color::Whitesmoke | ( |  | ) |
| inline static constexpr

Definition at line 838 of file color.h.

838 {
839 return {245.0f / 255.0f, 245.0f / 255.0f, 245.0f / 255.0f, 1.0f};
840 }

## ◆ WhiteTransparent()

static constexpr Color impeller::Color::WhiteTransparent | ( |  | ) |
| inline static constexpr

Definition at line 268 of file color.h.

268 { return {1.0f, 1.0f, 1.0f, 0.0f}; }

Referenced by impeller::testing::TEST_P().

## ◆ WithAlpha()

constexpr Color impeller::Color::WithAlpha | ( | Scalar | new_alpha | ) | const
| inline constexpr

Definition at line 278 of file color.h.

278 {
279 return {red, green, blue, new_alpha};
280 }

References blue, green, and red.

Referenced by impeller::testing::BlendModeTest(), impeller::FirstPassDispatcher::drawTextFrame(), impeller::Canvas::DrawVertices(), impeller::SolidColorContents::GetColor(), impeller::TextContents::GetColor(), impeller::TextContents::SetTextProperties(), and impeller::testing::TEST_P().

## ◆ Yellow()

static constexpr Color impeller::Color::Yellow | ( |  | ) |
| inline static constexpr

Definition at line 842 of file color.h.

842 {
843 return {255.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
844 }

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ YellowGreen()

static constexpr Color impeller::Color::YellowGreen | ( |  | ) |
| inline static constexpr

Definition at line 846 of file color.h.

846 {
847 return {154.0f / 255.0f, 205.0f / 255.0f, 50.0f / 255.0f, 1.0f};
848 }

## Member Data Documentation

## ◆ alpha

Scalar impeller::Color::alpha = 0.0

The alpha component of the color (0 to 1)

Definition at line 143 of file color.h.

Referenced by impeller::ApplyBlendedColor(), ApplyColorMatrix(), Blend(), impeller::testing::BlendModeTest(), Clamp01(), ColorNear(), impeller::ColorToString(), impeller::Paint::CreateContents(), impeller::Canvas::DrawAtlas(), impeller::Canvas::DrawImageRect(), impeller::DlDispatcherBase::drawShadow(), impeller::Canvas::DrawVertices(), impeller::EncodeCommandsInReactor(), impeller::SolidColorContents::GetColor(), impeller::TextContents::GetColor(), IsOpaque(), IsTransparent(), LinearToSRGB(), impeller::Min(), operator*(), operator+(), operator-(), impeller::operator-(), operator/(), impeller::operator/(), std::operator<<(), operator==(), Premultiply(), impeller::Canvas::SaveLayer(), impeller::android::SurfaceTransaction::SetBackgroundColor(), SRGBToLinear(), impeller::testing::TEST_P(), impeller::interop::ToDisplayListType(), ToIColor(), impeller::interop::ToImpellerType(), impeller::ToMTLClearColor(), ToR8G8B8A8(), impeller::ToVector(), Unpremultiply(), and impeller::VKClearValueFromColor().

## ◆ blue

Scalar impeller::Color::blue = 0.0

The blue color component (0 to 1)

Definition at line 138 of file color.h.

Referenced by ApplyColorMatrix(), impeller::testing::BlendModeTest(), Clamp01(), ColorNear(), impeller::ColorToString(), impeller::DoColorBlendComponents(), impeller::DrawPlaygroundLine(), impeller::DrawPlaygroundPoint(), impeller::DlDispatcherBase::drawShadow(), impeller::EncodeCommandsInReactor(), LinearToSRGB(), impeller::Min(), operator*(), operator+(), operator-(), impeller::operator-(), operator/(), impeller::operator/(), std::operator<<(), operator==(), Premultiply(), impeller::android::SurfaceTransaction::SetBackgroundColor(), SRGBToLinear(), impeller::testing::TEST_P(), impeller::interop::ToDisplayListType(), ToIColor(), impeller::interop::ToImpellerType(), impeller::ToMTLClearColor(), ToR8G8B8A8(), impeller::ToRGB(), impeller::ToVector(), Unpremultiply(), impeller::VKClearValueFromColor(), and WithAlpha().

## ◆ green

Scalar impeller::Color::green = 0.0

The green color component (0 to 1)

Definition at line 133 of file color.h.

Referenced by ApplyColorMatrix(), impeller::testing::BlendModeTest(), Clamp01(), ColorNear(), impeller::ColorToString(), impeller::DoColorBlendComponents(), impeller::DrawPlaygroundLine(), impeller::DrawPlaygroundPoint(), impeller::DlDispatcherBase::drawShadow(), impeller::EncodeCommandsInReactor(), LinearToSRGB(), impeller::Min(), operator*(), operator+(), operator-(), impeller::operator-(), operator/(), impeller::operator/(), std::operator<<(), operator==(), Premultiply(), impeller::android::SurfaceTransaction::SetBackgroundColor(), SRGBToLinear(), impeller::testing::TEST_P(), impeller::interop::ToDisplayListType(), ToIColor(), impeller::interop::ToImpellerType(), impeller::ToMTLClearColor(), ToR8G8B8A8(), impeller::ToRGB(), impeller::ToVector(), Unpremultiply(), impeller::VKClearValueFromColor(), and WithAlpha().

## ◆ red

Scalar impeller::Color::red = 0.0

The red color component (0 to 1)

Definition at line 128 of file color.h.

Referenced by ApplyColorMatrix(), impeller::testing::BlendModeTest(), Clamp01(), ColorNear(), impeller::ColorToString(), impeller::DoColorBlendComponents(), impeller::DrawPlaygroundLine(), impeller::DrawPlaygroundPoint(), impeller::DlDispatcherBase::drawShadow(), impeller::EncodeCommandsInReactor(), LinearToSRGB(), impeller::Min(), operator*(), operator+(), operator-(), impeller::operator-(), operator/(), impeller::operator/(), std::operator<<(), operator==(), Premultiply(), impeller::android::SurfaceTransaction::SetBackgroundColor(), SRGBToLinear(), impeller::testing::TEST_P(), impeller::interop::ToDisplayListType(), ToIColor(), impeller::interop::ToImpellerType(), impeller::ToMTLClearColor(), ToR8G8B8A8(), impeller::ToRGB(), impeller::ToVector(), Unpremultiply(), impeller::VKClearValueFromColor(), and WithAlpha().

The documentation for this struct was generated from the following files:

- impeller/geometry/color.h
- impeller/geometry/color.cc