Signal-iOS/Signal/test/views/ImageEditor/ImageEditorModelTest.swift
Evan Hahn 370ff654e7
Change license to AGPL
Change license to AGPL

This commit:

- Updates the `LICENSE` file

- Start every file with something like:

      // Copyright YEAR_FIRST_PUBLISHED Signal Messenger, LLC
      // SPDX-License-Identifier: AGPL-3.0-only

---

First, I removed existing license headers with this Ruby 3.1.2 script:

    require 'set'

    EXTENSIONS_TO_CHECK = Set['.h', '.hpp', '.cpp', '.m', '.mm', '.pch', '.swift']

    same = 0
    different = 0

    all_files = `git ls-files`.lines.map { |line| line.strip }
    all_files.each do |relative_path|
      if relative_path == 'Pods'
        next
      end

      unless EXTENSIONS_TO_CHECK.include? File.extname(relative_path)
        next
      end

      path = File.expand_path(relative_path)

      contents = File.read(path)
      new_contents = contents.sub(/\/\/\n\/\/  Copyright .*\n\/\/\n\n/, '')

      if contents == new_contents
        same += 1
      else
        different += 1
      end

      File.write(path, new_contents)
    end

    puts "updated #{different} file(s), left #{same} untouched"

I'm sure this script could be improved, but it worked well enough.

Then, I created `Scripts/lint/lint-license-headers` and ran it to auto-
fix a lot of files. This changed the mode of some files, but I think
that's actually desirable. For example,
`SignalServiceKit/src/Util/AppContext.m` previously had a mode of
`0755/-rwxr-xr-x`, and it's now `0644/-rw-r--r--`.

Then I fixed some stragglers and updated the precommit script.

See [a similar change in the Desktop app][0].

[0]: 8bfaf598af
2022-10-13 08:25:37 -05:00

86 lines
5.8 KiB
Swift

//
// Copyright 2019 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
//
import XCTest
@testable import Signal
@testable import SignalMessaging
@testable import SignalUI
class ImageEditorModelTest: SignalBaseTest {
func testImageEditorTransform0() {
let imageSizePixels = CGSize(width: 200, height: 300)
let outputSizePixels = CGSize(width: 200, height: 300)
let unitTranslation = CGPoint.zero
let rotationRadians: CGFloat = 0
let scaling: CGFloat = 1
let transform = ImageEditorTransform(outputSizePixels: outputSizePixels, unitTranslation: unitTranslation, rotationRadians: rotationRadians, scaling: scaling, isFlipped: false)
let viewSize = outputSizePixels
let imageFrame = ImageEditorCanvasView.imageFrame(forViewSize: viewSize, imageSize: imageSizePixels, transform: transform)
let affineTransform = transform.affineTransform(viewSize: viewSize)
XCTAssertEqual(0.0, imageFrame.topLeft.applying(affineTransform).x, accuracy: 0.1)
XCTAssertEqual(0.0, imageFrame.topLeft.applying(affineTransform).y, accuracy: 0.1)
XCTAssertEqual(100.0, imageFrame.center.applying(affineTransform).x, accuracy: 0.1)
XCTAssertEqual(150.0, imageFrame.center.applying(affineTransform).y, accuracy: 0.1)
XCTAssertEqual(200.0, imageFrame.bottomRight.applying(affineTransform).x, accuracy: 0.1)
XCTAssertEqual(300.0, imageFrame.bottomRight.applying(affineTransform).y, accuracy: 0.1)
}
func testImageEditorTransform1() {
let imageSizePixels = CGSize(width: 864, height: 1536)
let outputSizePixels = CGSize(width: 432, height: 768)
let unitTranslation = CGPoint(x: +0.5, y: -0.5)
let rotationRadians: CGFloat = 0
let scaling: CGFloat = 2
let transform = ImageEditorTransform(outputSizePixels: outputSizePixels, unitTranslation: unitTranslation, rotationRadians: rotationRadians, scaling: scaling, isFlipped: false)
let viewSize = CGSize(width: 335, height: 595)
let imageFrame = ImageEditorCanvasView.imageFrame(forViewSize: viewSize, imageSize: imageSizePixels, transform: transform)
let affineTransform = transform.affineTransform(viewSize: viewSize)
XCTAssertEqual(+167.5, imageFrame.topLeft.applying(affineTransform).x, accuracy: 0.1)
XCTAssertEqual(-298.0, imageFrame.topLeft.applying(affineTransform).y, accuracy: 0.1)
XCTAssertEqual(+502.5, imageFrame.center.applying(affineTransform).x, accuracy: 0.1)
XCTAssertEqual(+297.5, imageFrame.center.applying(affineTransform).y, accuracy: 0.1)
XCTAssertEqual(+837.5, imageFrame.bottomRight.applying(affineTransform).x, accuracy: 0.1)
XCTAssertEqual(+893.0, imageFrame.bottomRight.applying(affineTransform).y, accuracy: 0.1)
}
func testAffineTransformComposition() {
// Documents how classic SRT (scale-rotate-translate) ordering is specified
// in _reverse_ order using CGAffineTransform.
// The transformed origin should reflect ONLY the translation, not scaling or rotation.
XCTAssertEqual(+20.0, CGPoint.zero.applying(CGAffineTransform.translate(CGPoint(x: 20, y: 30)).scale(5)).x, accuracy: 0.1)
XCTAssertEqual(+30.0, CGPoint.zero.applying(CGAffineTransform.translate(CGPoint(x: 20, y: 30)).scale(5)).y, accuracy: 0.1)
// WRONG: the translation is being scaled.
XCTAssertEqual(+100.0, CGPoint.zero.applying(CGAffineTransform.scale(5).translate(CGPoint(x: 20, y: 30))).x, accuracy: 0.1)
XCTAssertEqual(+150.0, CGPoint.zero.applying(CGAffineTransform.scale(5).translate(CGPoint(x: 20, y: 30))).y, accuracy: 0.1)
// The transformed origin should reflect ONLY the translation, not scaling or rotation.
XCTAssertEqual(+20.0, CGPoint.zero.applying(CGAffineTransform.translate(CGPoint(x: 20, y: 30)).rotate(CGFloat.halfPi).scale(5)).x, accuracy: 0.1)
XCTAssertEqual(+30.0, CGPoint.zero.applying(CGAffineTransform.translate(CGPoint(x: 20, y: 30)).rotate(CGFloat.halfPi).scale(5)).y, accuracy: 0.1)
// WRONG: the translation is being scaled.
XCTAssertEqual(-150.0, CGPoint.zero.applying(CGAffineTransform.scale(5).rotate(CGFloat.halfPi).translate(CGPoint(x: 20, y: 30))).x, accuracy: 0.1)
XCTAssertEqual(+100.0, CGPoint.zero.applying(CGAffineTransform.scale(5).rotate(CGFloat.halfPi).translate(CGPoint(x: 20, y: 30))).y, accuracy: 0.1)
// An arbitrary point one "unit" away from the origin should be end up scaled (unit x scaling) + translation.
XCTAssertEqual(+25.0, CGPoint.unit.applying(CGAffineTransform.translate(CGPoint(x: 20, y: 30)).scale(5)).x, accuracy: 0.1)
XCTAssertEqual(+35.0, CGPoint.unit.applying(CGAffineTransform.translate(CGPoint(x: 20, y: 30)).scale(5)).y, accuracy: 0.1)
// WRONG: the translation is being scaled.
XCTAssertEqual(+105.0, CGPoint.unit.applying(CGAffineTransform.scale(5).translate(CGPoint(x: 20, y: 30))).x, accuracy: 0.1)
XCTAssertEqual(+155.0, CGPoint.unit.applying(CGAffineTransform.scale(5).translate(CGPoint(x: 20, y: 30))).y, accuracy: 0.1)
// An arbitrary point one "unit" away from the origin should be end up scaled (unit x scaling ... rotated about the origin) + translation.
XCTAssertEqual(+15.0, CGPoint.unit.applying(CGAffineTransform.translate(CGPoint(x: 20, y: 30)).rotate(CGFloat.halfPi).scale(5)).x, accuracy: 0.1)
XCTAssertEqual(+35.0, CGPoint.unit.applying(CGAffineTransform.translate(CGPoint(x: 20, y: 30)).rotate(CGFloat.halfPi).scale(5)).y, accuracy: 0.1)
// WRONG: the translation is being scaled.
XCTAssertEqual(-155.0, CGPoint.unit.applying(CGAffineTransform.scale(5).rotate(CGFloat.halfPi).translate(CGPoint(x: 20, y: 30))).x, accuracy: 0.1)
XCTAssertEqual(+105.0, CGPoint.unit.applying(CGAffineTransform.scale(5).rotate(CGFloat.halfPi).translate(CGPoint(x: 20, y: 30))).y, accuracy: 0.1)
}
}