Class: Google::Apis::FcmV1::Color
- Inherits:
-
Object
- Object
- Google::Apis::FcmV1::Color
- Includes:
- Core::Hashable, Core::JsonObjectSupport
- Defined in:
- generated/google/apis/fcm_v1/classes.rb,
generated/google/apis/fcm_v1/representations.rb,
generated/google/apis/fcm_v1/representations.rb
Overview
Represents a color in the RGBA color space. This representation is designed
for simplicity of conversion to/from color representations in various
languages over compactness; for example, the fields of this representation can
be trivially provided to the constructor of "java.awt.Color" in Java; it can
also be trivially provided to UIColor's "+colorWithRed:green:blue:alpha"
method in iOS; and, with just a little work, it can be easily formatted into a
CSS "rgba()" string in JavaScript, as well. Note: this proto does not carry
information about the absolute color space that should be used to interpret
the RGB value (e.g. sRGB, Adobe RGB, DCI-P3, BT.2020, etc.). By default,
applications SHOULD assume the sRGB color space. Note: when color equality
needs to be decided, implementations, unless documented otherwise, will treat
two colors to be equal if all their red, green, blue and alpha values each
differ by at most 1e-5. Example (Java): import com.google.type.Color; // ...
public static java.awt.Color fromProto(Color protocolor) float alpha =
protocolor.hasAlpha() ? protocolor.getAlpha().getValue() : 1.0; return new
java.awt.Color( protocolor.getRed(), protocolor.getGreen(), protocolor.getBlue(
), alpha);
public static Color toProto(java.awt.Color color) float red = (
float) color.getRed(); float green = (float) color.getGreen(); float blue = (
float) color.getBlue(); float denominator = 255.0; Color.Builder resultBuilder
= Color .newBuilder() .setRed(red / denominator) .setGreen(green / denominator)
.setBlue(blue / denominator); int alpha = color.getAlpha(); if (alpha != 255)
result.setAlpha( FloatValue .newBuilder() .setValue(((float) alpha) /
denominator) .build()); return resultBuilder.build();
// ... Example (iOS /
Obj-C): // ... static UIColor* fromProto(Color* protocolor) float red = [
protocolor red]; float green = [protocolor green]; float blue = [protocolor
blue]; FloatValue* alpha_wrapper = [protocolor alpha]; float alpha = 1.0; if (
alpha_wrapper != nil)
alpha = [alpha_wrapper value]; return [UIColor
colorWithRed:red green:green blue:blue alpha:alpha];
static Color* toProto(
UIColor* color) CGFloat red, green, blue, alpha; if (![color getRed:&red
green:&green blue:&blue alpha:&alpha])
return nil; Color* result = [[Color
alloc] init]; [result setRed:red]; [result setGreen:green]; [result setBlue:
blue]; if (alpha <= 0.9999)
[result setAlpha:floatWrapperWithValue(alpha)];
[result autorelease]; return result;
// ... Example (JavaScript): // ...
var protoToCssColor = function(rgb_color) var redFrac = rgb_color.red || 0.0;
var greenFrac = rgb_color.green || 0.0; var blueFrac = rgb_color.blue || 0.0;
var red = Math.floor(redFrac * 255); var green = Math.floor(greenFrac * 255);
var blue = Math.floor(blueFrac * 255); if (!('alpha' in rgb_color))
return
rgbToCssColor_(red, green, blue); var alphaFrac = rgb_color.alpha.value || 0.
0; var rgbParams = [red, green, blue].join(','); return ['rgba(', rgbParams, ',
', alphaFrac, ')'].join('');
; var rgbToCssColor_ = function(red, green, blue)
var rgbNumber = new Number((red << 16) | (green << 8) | blue); var
hexString = rgbNumber.toString(16); var missingZeros = 6 - hexString.length;
var resultBuilder = ['#']; for (var i = 0; i < missingZeros; i++)
resultBuilder.push('0'); resultBuilder.push(hexString); return resultBuilder.
join('');
; // ...
Instance Attribute Summary collapse
-
#alpha ⇒ Float
The fraction of this color that should be applied to the pixel.
-
#blue ⇒ Float
The amount of blue in the color as a value in the interval [0, 1].
-
#green ⇒ Float
The amount of green in the color as a value in the interval [0, 1].
-
#red ⇒ Float
The amount of red in the color as a value in the interval [0, 1].
Instance Method Summary collapse
-
#initialize(**args) ⇒ Color
constructor
A new instance of Color.
-
#update!(**args) ⇒ Object
Update properties of this object.
Constructor Details
#initialize(**args) ⇒ Color
Returns a new instance of Color.
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# File 'generated/google/apis/fcm_v1/classes.rb', line 505 def initialize(**args) update!(**args) end |
Instance Attribute Details
#alpha ⇒ Float
The fraction of this color that should be applied to the pixel. That is, the
final pixel color is defined by the equation: pixel color = alpha * (this
color) + (1.0 - alpha) * (background color) This means that a value of 1.0
corresponds to a solid color, whereas a value of 0.0 corresponds to a
completely transparent color. This uses a wrapper message rather than a simple
float scalar so that it is possible to distinguish between a default value and
the value being unset. If omitted, this color object is to be rendered as a
solid color (as if the alpha value had been explicitly given with a value of 1.
0).
Corresponds to the JSON property alpha
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# File 'generated/google/apis/fcm_v1/classes.rb', line 488 def alpha @alpha end |
#blue ⇒ Float
The amount of blue in the color as a value in the interval [0, 1].
Corresponds to the JSON property blue
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# File 'generated/google/apis/fcm_v1/classes.rb', line 493 def blue @blue end |
#green ⇒ Float
The amount of green in the color as a value in the interval [0, 1].
Corresponds to the JSON property green
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# File 'generated/google/apis/fcm_v1/classes.rb', line 498 def green @green end |
#red ⇒ Float
The amount of red in the color as a value in the interval [0, 1].
Corresponds to the JSON property red
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# File 'generated/google/apis/fcm_v1/classes.rb', line 503 def red @red end |
Instance Method Details
#update!(**args) ⇒ Object
Update properties of this object
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# File 'generated/google/apis/fcm_v1/classes.rb', line 510 def update!(**args) @alpha = args[:alpha] if args.key?(:alpha) @blue = args[:blue] if args.key?(:blue) @green = args[:green] if args.key?(:green) @red = args[:red] if args.key?(:red) end |