Hephaestus

0.2.0

Public/Get-HDTConsoleTheme.ps1

                                function Get-HDTConsoleTheme {

    <#

        .SYNOPSIS

            The colours the console window paints itself with.

        .DESCRIPTION

            ONE WINDOW FILE, TWO PALETTES. HDTConsole.xaml names every colour

            through a DynamicResource key and declares the light values inline,

            so the file renders on its own; the host replaces those resources

            with whichever palette this command returned. The alternative - a

            second XAML - is a hundred and seventy lines that have to be kept

            identical by hand, and they never are.

            LIGHT IS THE DEFAULT because the console is a desktop application

            that sits beside Explorer, the Deployment Workbench it replaces, and

            an administrator's other windows, and it is used in an office rather

            than in front of a server rack. The technician wizard in WinPE keeps

            its dark palette: that one is looked at in a dark room, on a bench,

            on a machine with nothing else on the screen.

            BOTH PALETTES CARRY THE SAME KEYS, and a test asserts it. A key

            present in one and missing from the other renders as an unstyled

            control - black on black, or invisible - and only in the theme

            nobody had open when the change was made.

            THE ACCENT BLUE DOES NOT CHANGE. #FF0E639C is HDT's, it carries

            white text at the required contrast on both palettes, and a product

            whose identity colour moves with the theme has no identity colour.

        .PARAMETER Name

            Light or Dark.

        .INPUTS

            None. This command does not accept pipeline input.

        .OUTPUTS

            System.Collections.Specialized.OrderedDictionary - resource key to

            colour, as #AARRGGBB.

        .EXAMPLE

            Get-HDTConsoleTheme -Name Light

        .EXAMPLE

            Show-HDTConsole -Path 'C:\HDTLab\Share' -Theme Dark

            How a caller asks for the other one.

    #>

    [CmdletBinding()]

    [OutputType([System.Collections.Specialized.OrderedDictionary])]

    param(

        [Parameter(Position = 0)]

        [ValidateSet('Light', 'Dark')]

        [string] $Name = 'Light'

    )

    Set-StrictMode -Version Latest

    $ErrorActionPreference = 'Stop'

    if ($Name -eq 'Dark') {

        return [ordered] @{

            HDTWindowBrush      = '#FF1E1E1E'

            HDTBannerBrush      = '#FF0E639C'

            HDTBannerTextBrush  = '#FFFFFFFF'

            HDTBannerLabelBrush = '#FFBEDCF0'

            HDTPanelBrush       = '#FF252526'

            HDTPanelTextBrush   = '#FFE6E6E6'

            # SECONDARY TEXT AND A REFUSAL. Both are named by markup that had

            # nothing behind them: an undefined DynamicResource does not fail,

            # it silently paints the control's default - which is how a hint

            # meant to be quiet came out the same weight as the label above it,

            # and an error message came out black.

            HDTHintTextBrush    = '#FF9A9A9A'

            HDTErrorBrush       = '#FFF48771'

            HDTBorderBrush      = '#FF3C3C3C'

            HDTLabelBrush       = '#FF9CDCFE'

            HDTCommandBrush     = '#FF1B1B1B'

            HDTCommandTextBrush = '#FFCE9178'

            HDTFieldBrush            = '#FF1B1B1B'

            HDTFooterBrush           = '#FF252526'

            HDTButtonBrush           = '#FF0E639C'

            HDTButtonTextBrush       = '#FFFFFFFF'

            HDTButtonHoverBrush      = '#FF1177BB'

            HDTButtonHoverTextBrush  = '#FFFFFFFF'

            HDTButtonPressedBrush    = '#FF0C5484'

        }

    }

    return [ordered] @{

        HDTWindowBrush      = '#FFF3F3F3'

        HDTBannerBrush      = '#FF0E639C'

        HDTBannerTextBrush  = '#FFFFFFFF'

        HDTBannerLabelBrush = '#FFD6E9F5'

        HDTPanelBrush       = '#FFFFFFFF'

        HDTPanelTextBrush   = '#FF1B1B1B'

        # See the dark theme for why these two exist. Grey enough to read as

        # secondary, dark enough to read at 11pt on white.

        HDTHintTextBrush    = '#FF6B6B6B'

        HDTErrorBrush       = '#FFA31515'

        HDTBorderBrush      = '#FFC8C8C8'

        HDTLabelBrush       = '#FF0E639C'

        HDTCommandBrush     = '#FFF7F7F7'

        # NOT THE ERROR RED, AND IT USED TO BE. Both were #FFA31515, and on

        # every dialog that has them the two lines sit one above the other: the

        # refusal, and the command it would have run. Painted alike, a

        # technician cannot tell a complaint from a preview, and the complaints

        # get read as decoration.

        #

        # The console window has no error line at all, which is why red reads

        # correctly THERE and this went unnoticed until somebody asked why the

        # New Deployment Share window had red text on it.

        #

        # Deep blue rather than another warm tone: the dark theme separates the

        # two with a string colour on a dark ground, and the light theme's

        # equivalent has to stay clear of both the error red and the banner blue

        # (#FF0E639C), which is lighter than this.

        HDTCommandTextBrush = '#FF0A3069'

        # THE READ-ONLY WASH, AND IT HAS TO BE SEEN TO BE ONE. It was #FAFAFA,

        # which against a white panel is a difference nobody can see - so a box

        # that takes a rename and a box that shows a step count looked exactly

        # alike, on this window and in the editor's Properties pane. Grey enough

        # to read as "not this one", light enough that a pane of them is not a

        # grey slab.

        HDTFieldBrush            = '#FFEDEDED'

        HDTFooterBrush           = '#FFE8E8E8'

        HDTButtonBrush           = '#FF0E639C'

        HDTButtonTextBrush       = '#FFFFFFFF'

        # HOVER IS A LIGHT WASH IN THE LIGHT THEME, SO THE LABEL GOES BLACK.

        # White on #FFCCE4F7 is a contrast ratio of about 1.7:1 - a button that

        # empties as the pointer reaches it. The dark theme's hover goes the

        # other way, so its label stays white. A test measures both rather than

        # trusting the pair to be chosen carefully next time.

        HDTButtonHoverBrush      = '#FFCCE4F7'

        HDTButtonHoverTextBrush  = '#FF000000'

        HDTButtonPressedBrush    = '#FFA9CFEC'

    }

}