assets: add A01 login design resources

2026-07-13 13:39:27 +08:00
parent 5507ba96b4
commit 86a41bcebc
8 changed files with 65 additions and 9 deletions
@@ -0,0 +1,46 @@
+$ErrorActionPreference = 'Stop'
+
+$root = Split-Path -Parent $PSScriptRoot
+Add-Type -AssemblyName System.Drawing
+
+$backgrounds = @(
+  'static/assets/backgrounds/auth-ancestral-header-v1.png',
+  'static/assets/backgrounds/auth-rice-paper-v1.jpg',
+  'static/assets/backgrounds/auth-ink-scenery-v1.png'
+)
+$icons = @(
+  'static/assets/icons/auth/login-outline-v1.png',
+  'static/assets/icons/auth/wechat-licensed-v1.png'
+)
+
+foreach ($asset in $backgrounds + $icons) {
+  if (-not (Test-Path -LiteralPath (Join-Path $root $asset))) {
+    throw "Missing A01 asset: $asset"
+  }
+}
+
+foreach ($asset in $icons) {
+  $bitmap = [System.Drawing.Bitmap]::FromFile((Join-Path $root $asset))
+  $width = [int]$bitmap.Width
+  $height = [int]$bitmap.Height
+  $corners = @(
+    $bitmap.GetPixel(0, 0).A,
+    $bitmap.GetPixel(($width - 1), 0).A,
+    $bitmap.GetPixel(0, ($height - 1)).A,
+    $bitmap.GetPixel(($width - 1), ($height - 1)).A
+  )
+  $visiblePixels = 0
+  for ($y = 0; $y -lt $height; $y++) {
+    for ($x = 0; $x -lt $width; $x++) {
+      if ($bitmap.GetPixel($x, $y).A -gt 24) { $visiblePixels++ }
+    }
+  }
+  $bitmap.Dispose()
+
+  if ($width -ne 96 -or $height -ne 96) { throw "$asset must be 96 x 96px." }
+  if (($corners | Where-Object { $_ -ne 0 }).Count -ne 0) { throw "$asset has opaque outer corners." }
+  if ($visiblePixels -lt 80) { throw "$asset has no usable visible artwork." }
+  Write-Output "PASS $asset transparent corners and visible artwork"
+}
+
+Write-Output 'A01-ASSET-ALPHA-AUDIT PASS'