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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.
 
uint32_t ToARGB () const
 Convert to ARGB 32 bit color.
 
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.
 
Color ApplyColorMatrix (const ColorMatrix &color_matrix) const
 A color filter that transforms colors through a 4x5 color matrix.
 
Color LinearToSRGB () const
 Convert the color from linear space to sRGB space.
 
Color SRGBToLinear () const
 Convert the color from sRGB space to linear space.
 
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.
 
static constexpr 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.
 
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 ( )
inlineconstexpr

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) {}
int32_t value
Scalar blue
Definition color.h:138
Scalar alpha
Definition color.h:143
Scalar red
Definition color.h:128
Scalar green
Definition color.h:133

References value.

◆ Color() [3/3]

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

Definition at line 149 of file color.h.

150 : red(r), green(g), blue(b), alpha(a) {}

Member Function Documentation

◆ AliceBlue()

static constexpr Color impeller::Color::AliceBlue ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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}
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 ( )
inlinestaticconstexpr

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 }

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

◆ AquaMarine()

static constexpr Color impeller::Color::AquaMarine ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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(), impeller::testing::TEST_P(), impeller::testing::TEST_P(), and impeller::testing::TEST_P().

◆ Beige()

static constexpr Color impeller::Color::Beige ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

◆ BlackTransparent()

static constexpr Color impeller::Color::BlackTransparent ( )
inlinestaticconstexpr

◆ BlanchedAlmond()

static constexpr Color impeller::Color::BlanchedAlmond ( )
inlinestaticconstexpr

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) {
163 case BlendMode::kSrc:
164 return src;
165 case BlendMode::kDst:
166 return dst;
168 // r = s + (1-sa)*d
169 return (src.Premultiply() + dst.Premultiply() * (1 - src.alpha))
170 .Unpremultiply();
172 // r = d + (1-da)*s
173 return (dst.Premultiply() + src.Premultiply() * (1 - dst.alpha))
174 .Unpremultiply();
176 // r = s * da
177 return (src.Premultiply() * dst.alpha).Unpremultiply();
179 // r = d * sa
180 return (dst.Premultiply() * src.alpha).Unpremultiply();
182 // r = s * ( 1- da)
183 return (src.Premultiply() * (1 - dst.alpha)).Unpremultiply();
185 // r = d * (1-sa)
186 return (dst.Premultiply() * (1 - src.alpha)).Unpremultiply();
188 // r = s*da + d*(1-sa)
189 return (src.Premultiply() * dst.alpha +
190 dst.Premultiply() * (1 - src.alpha))
191 .Unpremultiply();
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();
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 }
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 });
224 return DoColorBlend(
225 dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d.Min(s); });
227 return DoColorBlend(
228 dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d.Max(s); });
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 });
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 });
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 });
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 });
271 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
272 return (d - s).Abs();
273 });
275 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
276 return d + s - 2.0f * d * s;
277 });
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 {
284 });
285 }
287 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
289 });
291 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
292 return SetLuminosity(s, Luminosity(d));
293 });
295 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
296 return SetLuminosity(d, Luminosity(s));
297 });
298 }
299}
auto & d
Definition main.cc:28
static constexpr Color Min(Color c, float threshold)
Definition color.cc:55
static constexpr Vector3 SetSaturation(Vector3 color, Scalar saturation)
Definition color.cc:94
float Scalar
Definition scalar.h:19
static Color DoColorBlendComponents(Color dst, Color src, const std::function< Scalar(Scalar, Scalar)> &blend_func)
Definition color.cc:147
constexpr float kEhCloseEnough
Definition constants.h:57
static constexpr Scalar Saturation(Vector3 color)
Definition color.cc:89
static constexpr Vector3 SetLuminosity(Vector3 color, Scalar luminosity)
Definition color.cc:83
static Color DoColorBlend(Color dst, Color src, const std::function< Vector3(Vector3, Vector3)> &blend_rgb_func)
Definition color.cc:139
static constexpr Vector3 ComponentChoose(Vector3 a, Vector3 b, Vector3 value, Scalar cutoff)
Definition color.cc:101
static constexpr Scalar Luminosity(Vector3 color)
Definition color.cc:63
static constexpr Color BlackTransparent()
Definition color.h:270

References alpha, BlackTransparent(), impeller::ComponentChoose(), d, 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(), and Unpremultiply().

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

◆ Blue()

static constexpr Color impeller::Color::Blue ( )
inlinestaticconstexpr

Definition at line 276 of file color.h.

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

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

◆ BlueViolet()

static constexpr Color impeller::Color::BlueViolet ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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
inlineconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

◆ Cornsilk()

static constexpr Color impeller::Color::Cornsilk ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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

◆ DarkSlateGrey()

static constexpr Color impeller::Color::DarkSlateGrey ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

◆ GreenYellow()

static constexpr Color impeller::Color::GreenYellow ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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
inlineconstexpr

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
inlineconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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()

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

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

Parameters
aThe lower color.
bThe upper color.
tA 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 }

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

◆ LightBlue()

static constexpr Color impeller::Color::LightBlue ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 
)
inlinestaticconstexpr

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 Color().

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

◆ Maroon()

static constexpr Color impeller::Color::Maroon ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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(), and impeller::testing::TEST_P().

◆ MediumVioletRed()

static constexpr Color impeller::Color::MediumVioletRed ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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
inlineconstexpr

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* ( value) const
inlineconstexpr

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
inlineconstexpr

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+ ( value) const
inlineconstexpr

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
inlineconstexpr

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- ( value) const
inlineconstexpr

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
inlineconstexpr

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/ ( value) const
inlineconstexpr

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
inlineconstexpr

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 }
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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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()

◆ Purple()

static constexpr Color impeller::Color::Purple ( )
inlinestaticconstexpr

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 ( )
inlinestatic

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()

◆ RosyBrown()

static constexpr Color impeller::Color::RosyBrown ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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 }
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()(), impeller::testing::TEST_P(), impeller::testing::TEST_P(), impeller::testing::TEST_P(), impeller::testing::TEST_P(), impeller::testing::TEST_P(), impeller::testing::TEST_P(), and impeller::testing::TEST_P().

◆ ToIColor()

static uint32_t impeller::Color::ToIColor ( Color  color)
inlinestatic

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 ( )
inlinestaticconstexpr

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, 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 ( )
inlinestaticconstexpr

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
inlineconstexpr

Definition at line 216 of file color.h.

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

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

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

◆ Violet()

static constexpr Color impeller::Color::Violet ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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()

◆ Whitesmoke()

static constexpr Color impeller::Color::Whitesmoke ( )
inlinestaticconstexpr

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 ( )
inlinestaticconstexpr

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()

◆ Yellow()

static constexpr Color impeller::Color::Yellow ( )
inlinestaticconstexpr

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().

◆ YellowGreen()

static constexpr Color impeller::Color::YellowGreen ( )
inlinestaticconstexpr

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

◆ blue

◆ green

◆ red


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