Public/Set-FluenceAccent.ps1
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<# Copyright (c) 2026, Dan Cunningham. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #> function Set-FluenceAccent { <# .SYNOPSIS Sets the Fluent accent color, either to a custom color or back to the system accent. .DESCRIPTION Runs the Fluence accent resolver on the UI (STA) thread and re-runs the theme pipeline so every accent-derived brush is recomputed. Use -Color to pin the accent ramp to a custom color, or -System to reset the accent intent to the OS palette. .PARAMETER Color The custom accent color (System.Windows.Media.Color or a parseable string). .PARAMETER System Reset the accent intent to the system (OS) accent. .EXAMPLE Set-FluenceAccent -Color '#0078D4' .EXAMPLE Set-FluenceAccent -System .NOTES Uses the calling STA thread or a module-owned STA runspace. An existing host application is supported only when the command already runs on its dispatcher thread. #> [CmdletBinding(DefaultParameterSetName = 'Custom')] [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSUseShouldProcessForStateChangingFunctions', '', Justification = 'Mutates transient in-process WPF accent resources only; makes no persistent or destructive system change, so ShouldProcess prompting is not appropriate.')] [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSReviewUnusedParameter', 'System', Justification = 'Selects the System parameter set; its presence is read via $PSCmdlet.ParameterSetName, which PSScriptAnalyzer cannot statically trace.')] param ( [Parameter(Mandatory = $true, Position = 0, ParameterSetName = 'Custom')] [System.Windows.Media.Color]$Color, [Parameter(Mandatory = $true, ParameterSetName = 'System')] [switch]$System ) $null = Invoke-OnFluenceUi -Script { param($parameterSetName, $color) if ($null -eq [System.Windows.Application]::Current) { $app = [System.Windows.Application]::new() $app.ShutdownMode = [System.Windows.ShutdownMode]::OnExplicitShutdown } if ($parameterSetName -eq 'System') { [Fluence.Wpf.ApplicationAccentColorManager]::ApplySystemAccent() } else { [Fluence.Wpf.ApplicationAccentColorManager]::ApplyCustomAccent([System.Windows.Media.Color]$color) } # Record the apply so a later dialog without -Accent leaves this accent alone instead of # resetting it to the system accent; see Initialize-FluenceApplication. [System.AppDomain]::CurrentDomain.SetData($script:ThemeSeededSlot, $true) } -ArgumentList @($PSCmdlet.ParameterSetName, $Color) } |