chromium/src/third_party/blink/web_tests/flag-specific/highdpi/compositing/squashing/add-remove-squashed-layers-expected.txt

Test that layers can be nicely added or removed from a squashed layer, without unnecessary repaints on any layer. Click anywhere to test interactively; keep clicking to proceed through the test.

CASE 1, original layer tree with overlap1 and overlap2:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
    {
      "name": "LayoutNGBlockFlow (positioned) DIV class='composited'",
      "bounds": [600, 600],
      "contentsOpaque": true,
      "backgroundColor": "#808080",
      "transform": 1
    },
    {
      "name": "Squashing Layer (first squashed layer: LayoutNGBlockFlow (positioned) DIV id='A' class='overlap1')",
      "position": [120, 120],
      "bounds": [270, 270],
      "transform": 1
    }
  ],
  "transforms": [
    {
      "id": 1,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [90, 90, 0, 1]
      ]
    }
  ]
}

CASE 2, overlap3 gets added:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
    {
      "name": "LayoutNGBlockFlow (positioned) DIV class='composited'",
      "bounds": [600, 600],
      "contentsOpaque": true,
      "backgroundColor": "#808080",
      "transform": 1
    },
    {
      "name": "Squashing Layer (first squashed layer: LayoutNGBlockFlow (positioned) DIV id='A' class='overlap1')",
      "position": [120, 120],
      "bounds": [390, 390],
      "invalidations": [
        [240, 240, 150, 150]
      ],
      "transform": 1
    }
  ],
  "transforms": [
    {
      "id": 1,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [90, 90, 0, 1]
      ]
    }
  ]
}

CASE 3, overlap2 gets removed. Since this does not resize the layer, there should only be a repaint of overlap2:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
    {
      "name": "LayoutNGBlockFlow (positioned) DIV class='composited'",
      "bounds": [600, 600],
      "contentsOpaque": true,
      "backgroundColor": "#808080",
      "transform": 1
    },
    {
      "name": "Squashing Layer (first squashed layer: LayoutNGBlockFlow (positioned) DIV id='A' class='overlap1')",
      "position": [120, 120],
      "bounds": [390, 390],
      "invalidations": [
        [120, 120, 150, 150]
      ],
      "transform": 1
    }
  ],
  "transforms": [
    {
      "id": 1,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [90, 90, 0, 1]
      ]
    }
  ]
}

CASE 4, overlap1 gets removed:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
    {
      "name": "LayoutNGBlockFlow (positioned) DIV class='composited'",
      "bounds": [600, 600],
      "contentsOpaque": true,
      "backgroundColor": "#808080",
      "transform": 1
    },
    {
      "name": "Squashing Layer (first squashed layer: LayoutNGBlockFlow (positioned) DIV id='C' class='overlap3')",
      "position": [360, 360],
      "bounds": [150, 150],
      "invalidations": [
        [0, 0, 150, 150]
      ],
      "transform": 1
    }
  ],
  "transforms": [
    {
      "id": 1,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [90, 90, 0, 1]
      ]
    }
  ]
}

CASE 5, overlap2 gets added back:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
    {
      "name": "LayoutNGBlockFlow (positioned) DIV class='composited'",
      "bounds": [600, 600],
      "contentsOpaque": true,
      "backgroundColor": "#808080",
      "transform": 1
    },
    {
      "name": "Squashing Layer (first squashed layer: LayoutNGBlockFlow (positioned) DIV id='B' class='overlap2')",
      "position": [240, 240],
      "bounds": [270, 270],
      "invalidations": [
        [120, 120, 150, 150],
        [0, 0, 150, 150]
      ],
      "transform": 1
    }
  ],
  "transforms": [
    {
      "id": 1,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [90, 90, 0, 1]
      ]
    }
  ]
}

CASE 6, overlap1 gets added back, and overlap3 gets removed:
{
  "layers": [
    {
      "name": "Scrolling Contents Layer",
      "bounds": [1200, 900],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
    {
      "name": "LayoutNGBlockFlow (positioned) DIV class='composited'",
      "bounds": [600, 600],
      "contentsOpaque": true,
      "backgroundColor": "#808080",
      "transform": 1
    },
    {
      "name": "Squashing Layer (first squashed layer: LayoutNGBlockFlow (positioned) DIV id='A' class='overlap1')",
      "position": [120, 120],
      "bounds": [270, 270],
      "invalidations": [
        [120, 120, 150, 150],
        [0, 0, 150, 150]
      ],
      "transform": 1
    }
  ],
  "transforms": [
    {
      "id": 1,
      "transform": [
        [1, 0, 0, 0],
        [0, 1, 0, 0],
        [0, 0, 1, 0],
        [90, 90, 0, 1]
      ]
    }
  ]
}