issue: flutter/flutter#127855
integration test: #54415

This does the preliminary work for implementing wide gamut colors in the
Flutter framework. Here are the following changes:
1) colors now specify a colorspace with which they are to be interpreted
1) colors now store their components as floats to accommodate bit depths
more than 8

The storage of this Color class is weird with float/int storage but that
is a temporary solution to support a smooth transition. Here is the plan
for landing this:
1) Land this PR
1) Wait for it to roll into the Framework
1) Land flutter/flutter#153938 which will make
CupertinoDynamicColor implement Color
1) Land another engine PR that rips out the int storage:
#54714

Here are follow up PRs:
1) #54473 - changes DlColor so the
wide gamut colors are rendered
1) #54567 - Hooks up these changes
to take advantage of wide DlColor
1) flutter/flutter#153319 - the integration test
for the framework repo

There are some things that have been left as follow up PRs since they
are technically breaking:
1) The math on `lerp` hasn't been updated to take advantage of the
higher bit depth
1) `operator==` hasn't been updated to take advantage of the higher bit
depth
1) `hashCode` hasn't been updated to take advantage of the higher bit
depth
1) `alphaBlend` hasn't been updated to take advantage of the higher bit
depth
1) `toString` hasn't been updated to take advantage of the higher bit
depth

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide] and the [C++,
Objective-C, Java style guides].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I added new tests to check the change I am making or feature I am
adding, or the PR is [test-exempt]. See [testing the engine] for
instructions on writing and running engine tests.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I signed the [CLA].
- [x] All existing and new tests are passing.

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issue: flutter/flutter#127855
integration test: flutter#54415

This does the preliminary work for implementing wide gamut colors in the
Flutter framework. Here are the following changes:
1) colors now specify a colorspace with which they are to be interpreted
1) colors now store their components as floats to accommodate bit depths
more than 8

The storage of this Color class is weird with float/int storage but that
is a temporary solution to support a smooth transition. Here is the plan
for landing this:
1) Land this PR
1) Wait for it to roll into the Framework
1) Land flutter/flutter#153938 which will make
CupertinoDynamicColor implement Color
1) Land another engine PR that rips out the int storage:
flutter#54714

Here are follow up PRs:
1) flutter#54473 - changes DlColor so the
wide gamut colors are rendered
1) flutter#54567 - Hooks up these changes
to take advantage of wide DlColor
1) flutter/flutter#153319 - the integration test
for the framework repo

There are some things that have been left as follow up PRs since they
are technically breaking:
1) The math on `lerp` hasn't been updated to take advantage of the
higher bit depth
1) `operator==` hasn't been updated to take advantage of the higher bit
depth
1) `hashCode` hasn't been updated to take advantage of the higher bit
depth
1) `alphaBlend` hasn't been updated to take advantage of the higher bit
depth
1) `toString` hasn't been updated to take advantage of the higher bit
depth

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide] and the [C++,
Objective-C, Java style guides].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I added new tests to check the change I am making or feature I am
adding, or the PR is [test-exempt]. See [testing the engine] for
instructions on writing and running engine tests.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I signed the [CLA].
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

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issue: flutter/flutter#127855
integration test: flutter#54415

This does the preliminary work for implementing wide gamut colors in the
Flutter framework. Here are the following changes:
1) colors now specify a colorspace with which they are to be interpreted
1) colors now store their components as floats to accommodate bit depths
more than 8

The storage of this Color class is weird with float/int storage but that
is a temporary solution to support a smooth transition. Here is the plan
for landing this:
1) Land this PR
1) Wait for it to roll into the Framework
1) Land flutter/flutter#153938 which will make
CupertinoDynamicColor implement Color
1) Land another engine PR that rips out the int storage:
flutter#54714

Here are follow up PRs:
1) flutter#54473 - changes DlColor so the
wide gamut colors are rendered
1) flutter#54567 - Hooks up these changes
to take advantage of wide DlColor
1) flutter/flutter#153319 - the integration test
for the framework repo

There are some things that have been left as follow up PRs since they
are technically breaking:
1) The math on `lerp` hasn't been updated to take advantage of the
higher bit depth
1) `operator==` hasn't been updated to take advantage of the higher bit
depth
1) `hashCode` hasn't been updated to take advantage of the higher bit
depth
1) `alphaBlend` hasn't been updated to take advantage of the higher bit
depth
1) `toString` hasn't been updated to take advantage of the higher bit
depth

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide] and the [C++,
Objective-C, Java style guides].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I added new tests to check the change I am making or feature I am
adding, or the PR is [test-exempt]. See [testing the engine] for
instructions on writing and running engine tests.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I signed the [CLA].
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

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[This PR](#54415) was reverted because it requires a manual roll into the framework.

issue: flutter/flutter#127855
integration test: #54415

This does the preliminary work for implementing wide gamut colors in the Flutter framework. Here are the following changes: 1) colors now specify a colorspace with which they are to be interpreted 1) colors now store their components as floats to accommodate bit depths more than 8

The storage of this Color class is weird with float/int storage but that is a temporary solution to support a smooth transition. Here is the plan for landing this:
1) Land this PR
1) Wait for it to roll into the Framework
1) Land flutter/flutter#153938 which will make CupertinoDynamicColor implement Color
1) Land another engine PR that rips out the int storage: #54714

Here are follow up PRs:
1) #54473 - changes DlColor so the wide gamut colors are rendered
1) #54567 - Hooks up these changes to take advantage of wide DlColor
1) flutter/flutter#153319 - the integration test for the framework repo

There are some things that have been left as follow up PRs since they are technically breaking:
1) The math on `lerp` hasn't been updated to take advantage of the higher bit depth
1) `operator==` hasn't been updated to take advantage of the higher bit depth
1) `hashCode` hasn't been updated to take advantage of the higher bit depth
1) `alphaBlend` hasn't been updated to take advantage of the higher bit depth
1) `toString` hasn't been updated to take advantage of the higher bit depth

Reverts: #54737
Initiated by: chingjun
Reason for reverting: Breaking internal tests. See b/363125155
Original PR Author: gaaclarke

Reviewed By: {matanlurey, jonahwilliams}

This change reverts the following previous change:
[This PR](#54415) was reverted because it requires a manual roll into the framework.

issue: flutter/flutter#127855
integration test: #54415

This does the preliminary work for implementing wide gamut colors in the Flutter framework. Here are the following changes: 1) colors now specify a colorspace with which they are to be interpreted 1) colors now store their components as floats to accommodate bit depths more than 8

The storage of this Color class is weird with float/int storage but that is a temporary solution to support a smooth transition. Here is the plan for landing this:
1) Land this PR
1) Wait for it to roll into the Framework
1) Land flutter/flutter#153938 which will make CupertinoDynamicColor implement Color
1) Land another engine PR that rips out the int storage: #54714

Here are follow up PRs:
1) #54473 - changes DlColor so the wide gamut colors are rendered
1) #54567 - Hooks up these changes to take advantage of wide DlColor
1) flutter/flutter#153319 - the integration test for the framework repo

There are some things that have been left as follow up PRs since they are technically breaking:
1) The math on `lerp` hasn't been updated to take advantage of the higher bit depth
1) `operator==` hasn't been updated to take advantage of the higher bit depth
1) `hashCode` hasn't been updated to take advantage of the higher bit depth
1) `alphaBlend` hasn't been updated to take advantage of the higher bit depth
1) `toString` hasn't been updated to take advantage of the higher bit depth

[This PR](flutter#54415) was reverted because it requires a manual roll into the framework.

issue: flutter/flutter#127855
integration test: flutter#54415

This does the preliminary work for implementing wide gamut colors in the Flutter framework. Here are the following changes: 1) colors now specify a colorspace with which they are to be interpreted 1) colors now store their components as floats to accommodate bit depths more than 8

The storage of this Color class is weird with float/int storage but that is a temporary solution to support a smooth transition. Here is the plan for landing this:
1) Land this PR
1) Wait for it to roll into the Framework
1) Land flutter/flutter#153938 which will make CupertinoDynamicColor implement Color
1) Land another engine PR that rips out the int storage: flutter#54714

Here are follow up PRs:
1) flutter#54473 - changes DlColor so the wide gamut colors are rendered
1) flutter#54567 - Hooks up these changes to take advantage of wide DlColor
1) flutter/flutter#153319 - the integration test for the framework repo

There are some things that have been left as follow up PRs since they are technically breaking:
1) The math on `lerp` hasn't been updated to take advantage of the higher bit depth
1) `operator==` hasn't been updated to take advantage of the higher bit depth
1) `hashCode` hasn't been updated to take advantage of the higher bit depth
1) `alphaBlend` hasn't been updated to take advantage of the higher bit depth
1) `toString` hasn't been updated to take advantage of the higher bit depth

[This PR](#54415) was reverted
because it required customer testing updates.

issue: flutter/flutter#127855
integration test: #54415

This does the preliminary work for implementing wide gamut colors in the
Flutter framework. Here are the following changes: 1) colors now specify
a colorspace with which they are to be interpreted 1) colors now store
their components as floats to accommodate bit depths more than 8

The storage of this Color class is weird with float/int storage but that
is a temporary solution to support a smooth transition. Here is the plan
for landing this: 1) Land this PR
1) Wait for it to roll into the Framework
1) Land flutter/flutter#153938 which will make
CupertinoDynamicColor implement Color 1) Land another engine PR that
rips out the int storage: #54714

Here are follow up PRs:
1) #54473 - changes DlColor so the
wide gamut colors are rendered 1)
#54567 - Hooks up these changes to
take advantage of wide DlColor 1)
flutter/flutter#153319 - the integration test
for the framework repo

There are some things that have been left as follow up PRs since they
are technically breaking: 1) The math on `lerp` hasn't been updated to
take advantage of the higher bit depth 1) `operator==` hasn't been
updated to take advantage of the higher bit depth 1) `hashCode` hasn't
been updated to take advantage of the higher bit depth 1) `alphaBlend`
hasn't been updated to take advantage of the higher bit depth 1)
`toString` hasn't been updated to take advantage of the higher bit depth

## Reland 2 notes

This was reverted because it changes the math on `_lerpDouble`. While
those changes were mathematcially equivalent, they had different
behaviors when working with non-numbers which created unexpected
changes. The change has been reverted and a test added.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide] and the [C++,
Objective-C, Java style guides].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I added new tests to check the change I am making or feature I am
adding, or the PR is [test-exempt]. See [testing the engine] for
instructions on writing and running engine tests.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I signed the [CLA].
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

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