Package com.google.type
Class Color
java.lang.Object
com.google.protobuf.AbstractMessageLite
com.google.protobuf.AbstractMessage
com.google.protobuf.GeneratedMessageV3
com.google.type.Color
- All Implemented Interfaces:
com.google.protobuf.Message
,com.google.protobuf.MessageLite
,com.google.protobuf.MessageLiteOrBuilder
,com.google.protobuf.MessageOrBuilder
,ColorOrBuilder
,Serializable
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. This reference page doesn't 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. When color equality needs to be decided, implementations, unless documented otherwise, treat two colors as 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(''); }; // ...Protobuf type
google.type.Color
- See Also:
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Nested Class Summary
Modifier and TypeClassDescriptionstatic final class
Represents a color in the RGBA color space.Nested classes/interfaces inherited from class com.google.protobuf.GeneratedMessageV3
com.google.protobuf.GeneratedMessageV3.BuilderParent, com.google.protobuf.GeneratedMessageV3.ExtendableBuilder<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage,
BuilderType extends com.google.protobuf.GeneratedMessageV3.ExtendableBuilder<MessageType, BuilderType>>, com.google.protobuf.GeneratedMessageV3.ExtendableMessage<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage>, com.google.protobuf.GeneratedMessageV3.ExtendableMessageOrBuilder<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage>, com.google.protobuf.GeneratedMessageV3.FieldAccessorTable, com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter Nested classes/interfaces inherited from class com.google.protobuf.AbstractMessageLite
com.google.protobuf.AbstractMessageLite.InternalOneOfEnum
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Field Summary
Modifier and TypeFieldDescriptionstatic final int
static final int
static final int
static final int
Fields inherited from class com.google.protobuf.GeneratedMessageV3
alwaysUseFieldBuilders, unknownFields
Fields inherited from class com.google.protobuf.AbstractMessage
memoizedSize
Fields inherited from class com.google.protobuf.AbstractMessageLite
memoizedHashCode
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Method Summary
Modifier and TypeMethodDescriptionboolean
getAlpha()
The fraction of this color that should be applied to the pixel.The fraction of this color that should be applied to the pixel.float
getBlue()
The amount of blue in the color as a value in the interval [0, 1].static Color
static final com.google.protobuf.Descriptors.Descriptor
float
getGreen()
The amount of green in the color as a value in the interval [0, 1].com.google.protobuf.Parser<Color>
float
getRed()
The amount of red in the color as a value in the interval [0, 1].int
final com.google.protobuf.UnknownFieldSet
boolean
hasAlpha()
The fraction of this color that should be applied to the pixel.int
hashCode()
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
final boolean
static Color.Builder
static Color.Builder
newBuilder
(Color prototype) protected Color.Builder
newBuilderForType
(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) protected Object
newInstance
(com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter unused) static Color
parseDelimitedFrom
(InputStream input) static Color
parseDelimitedFrom
(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) static Color
parseFrom
(byte[] data) static Color
parseFrom
(byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) static Color
parseFrom
(com.google.protobuf.ByteString data) static Color
parseFrom
(com.google.protobuf.ByteString data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) static Color
parseFrom
(com.google.protobuf.CodedInputStream input) static Color
parseFrom
(com.google.protobuf.CodedInputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) static Color
parseFrom
(InputStream input) static Color
parseFrom
(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) static Color
parseFrom
(ByteBuffer data) static Color
parseFrom
(ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) static com.google.protobuf.Parser<Color>
parser()
void
writeTo
(com.google.protobuf.CodedOutputStream output) Methods inherited from class com.google.protobuf.GeneratedMessageV3
canUseUnsafe, computeStringSize, computeStringSizeNoTag, emptyBooleanList, emptyDoubleList, emptyFloatList, emptyIntList, emptyLongList, getAllFields, getDescriptorForType, getField, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, hasField, hasOneof, internalGetMapField, isStringEmpty, makeExtensionsImmutable, mergeFromAndMakeImmutableInternal, mutableCopy, mutableCopy, mutableCopy, mutableCopy, mutableCopy, newBooleanList, newBuilderForType, newDoubleList, newFloatList, newIntList, newLongList, parseDelimitedWithIOException, parseDelimitedWithIOException, parseUnknownField, parseUnknownFieldProto3, parseWithIOException, parseWithIOException, parseWithIOException, parseWithIOException, serializeBooleanMapTo, serializeIntegerMapTo, serializeLongMapTo, serializeStringMapTo, writeReplace, writeString, writeStringNoTag
Methods inherited from class com.google.protobuf.AbstractMessage
findInitializationErrors, getInitializationErrorString, hashBoolean, hashEnum, hashEnumList, hashFields, hashLong, toString
Methods inherited from class com.google.protobuf.AbstractMessageLite
addAll, addAll, checkByteStringIsUtf8, toByteArray, toByteString, writeDelimitedTo, writeTo
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface com.google.protobuf.MessageLite
toByteArray, toByteString, writeDelimitedTo, writeTo
Methods inherited from interface com.google.protobuf.MessageOrBuilder
findInitializationErrors, getAllFields, getDescriptorForType, getField, getInitializationErrorString, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, hasField, hasOneof
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Field Details
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RED_FIELD_NUMBER
public static final int RED_FIELD_NUMBER- See Also:
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GREEN_FIELD_NUMBER
public static final int GREEN_FIELD_NUMBER- See Also:
-
BLUE_FIELD_NUMBER
public static final int BLUE_FIELD_NUMBER- See Also:
-
ALPHA_FIELD_NUMBER
public static final int ALPHA_FIELD_NUMBER- See Also:
-
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Method Details
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newInstance
- Overrides:
newInstance
in classcom.google.protobuf.GeneratedMessageV3
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getUnknownFields
public final com.google.protobuf.UnknownFieldSet getUnknownFields()- Specified by:
getUnknownFields
in interfacecom.google.protobuf.MessageOrBuilder
- Overrides:
getUnknownFields
in classcom.google.protobuf.GeneratedMessageV3
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getDescriptor
public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() -
internalGetFieldAccessorTable
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()- Specified by:
internalGetFieldAccessorTable
in classcom.google.protobuf.GeneratedMessageV3
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getRed
public float getRed()The amount of red in the color as a value in the interval [0, 1].
float red = 1;
- Specified by:
getRed
in interfaceColorOrBuilder
- Returns:
- The red.
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getGreen
public float getGreen()The amount of green in the color as a value in the interval [0, 1].
float green = 2;
- Specified by:
getGreen
in interfaceColorOrBuilder
- Returns:
- The green.
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getBlue
public float getBlue()The amount of blue in the color as a value in the interval [0, 1].
float blue = 3;
- Specified by:
getBlue
in interfaceColorOrBuilder
- Returns:
- The blue.
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hasAlpha
public boolean hasAlpha()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 rendered as a solid color (as if the alpha value had been explicitly given a value of 1.0).
.google.protobuf.FloatValue alpha = 4;
- Specified by:
hasAlpha
in interfaceColorOrBuilder
- Returns:
- Whether the alpha field is set.
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getAlpha
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 rendered as a solid color (as if the alpha value had been explicitly given a value of 1.0).
.google.protobuf.FloatValue alpha = 4;
- Specified by:
getAlpha
in interfaceColorOrBuilder
- Returns:
- The alpha.
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getAlphaOrBuilder
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 rendered as a solid color (as if the alpha value had been explicitly given a value of 1.0).
.google.protobuf.FloatValue alpha = 4;
- Specified by:
getAlphaOrBuilder
in interfaceColorOrBuilder
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isInitialized
public final boolean isInitialized()- Specified by:
isInitialized
in interfacecom.google.protobuf.MessageLiteOrBuilder
- Overrides:
isInitialized
in classcom.google.protobuf.GeneratedMessageV3
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writeTo
- Specified by:
writeTo
in interfacecom.google.protobuf.MessageLite
- Overrides:
writeTo
in classcom.google.protobuf.GeneratedMessageV3
- Throws:
IOException
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getSerializedSize
public int getSerializedSize()- Specified by:
getSerializedSize
in interfacecom.google.protobuf.MessageLite
- Overrides:
getSerializedSize
in classcom.google.protobuf.GeneratedMessageV3
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equals
- Specified by:
equals
in interfacecom.google.protobuf.Message
- Overrides:
equals
in classcom.google.protobuf.AbstractMessage
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hashCode
public int hashCode()- Specified by:
hashCode
in interfacecom.google.protobuf.Message
- Overrides:
hashCode
in classcom.google.protobuf.AbstractMessage
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parseFrom
public static Color parseFrom(ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException - Throws:
com.google.protobuf.InvalidProtocolBufferException
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parseFrom
public static Color parseFrom(ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException - Throws:
com.google.protobuf.InvalidProtocolBufferException
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parseFrom
public static Color parseFrom(com.google.protobuf.ByteString data) throws com.google.protobuf.InvalidProtocolBufferException - Throws:
com.google.protobuf.InvalidProtocolBufferException
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parseFrom
public static Color parseFrom(com.google.protobuf.ByteString data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException - Throws:
com.google.protobuf.InvalidProtocolBufferException
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parseFrom
public static Color parseFrom(byte[] data) throws com.google.protobuf.InvalidProtocolBufferException - Throws:
com.google.protobuf.InvalidProtocolBufferException
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parseFrom
public static Color parseFrom(byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException - Throws:
com.google.protobuf.InvalidProtocolBufferException
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parseFrom
- Throws:
IOException
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parseFrom
public static Color parseFrom(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws IOException - Throws:
IOException
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parseDelimitedFrom
- Throws:
IOException
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parseDelimitedFrom
public static Color parseDelimitedFrom(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws IOException - Throws:
IOException
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parseFrom
- Throws:
IOException
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parseFrom
public static Color parseFrom(com.google.protobuf.CodedInputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws IOException - Throws:
IOException
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newBuilderForType
- Specified by:
newBuilderForType
in interfacecom.google.protobuf.Message
- Specified by:
newBuilderForType
in interfacecom.google.protobuf.MessageLite
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newBuilder
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newBuilder
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toBuilder
- Specified by:
toBuilder
in interfacecom.google.protobuf.Message
- Specified by:
toBuilder
in interfacecom.google.protobuf.MessageLite
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newBuilderForType
protected Color.Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) - Specified by:
newBuilderForType
in classcom.google.protobuf.GeneratedMessageV3
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getDefaultInstance
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parser
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getParserForType
- Specified by:
getParserForType
in interfacecom.google.protobuf.Message
- Specified by:
getParserForType
in interfacecom.google.protobuf.MessageLite
- Overrides:
getParserForType
in classcom.google.protobuf.GeneratedMessageV3
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getDefaultInstanceForType
- Specified by:
getDefaultInstanceForType
in interfacecom.google.protobuf.MessageLiteOrBuilder
- Specified by:
getDefaultInstanceForType
in interfacecom.google.protobuf.MessageOrBuilder
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