History: Theme Customizer

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            ! Theme customizer
In ((Tiki18)), it was called "Style Guide Tool", but was renamed to "Theme customizer" in ((Tiki19)) to be more descriptive. There were also some changes as:
* Tiki18 uses Bootstrap 3 with Less
* Tiki19 uses Bootstrap 4 with Sass

{DIV(class="lead")}New in ((Tiki18)), the Theme Customizer is an interactive page for editing site colors, fonts, and other style details, with the results shown in real time. The generated code can be input as custom CSS or Less variables on the Look and Feel admin page, to modify the appearance of the Tiki site. This tool is for making overall, global changes. {DIV}  

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-10 col-sm-offset-1 thumbnail")}{img src="display1664"}%%%::Theme Customizer Overview::{DIV}{DIV}

!! How to activate it
To access the tool, go to the Look and Feel admin page (tiki-admin.php?page=look), and the "Customization" tab. The activation checkbox is near the bottom of the page. If you don't see it, the reason is probably that Advanced features aren't being displayed, so follow the instructions in the box below.

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-10 col-sm-offset-1")}
{REMARKSBOX(type="note" title="Activating Advanced Features")}This is an "advanced" feature, so be sure the feature preferences filter is set to "Advanced". You can make this your default in the dropdown list (under the {icon name="filter"} filter icon).

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-6")}{img src="dl1419"}%%%::Switch preference filter to Advanced::{DIV}{DIV(class="col-sm-6")}{img src="dl1418"}%%%::Check desired preference levels as your personal default::{DIV}{DIV}{REMARKSBOX}{DIV}{DIV}

Activate the feature by checking the checkbox and clicking the "Apply" button. When the page refreshes, hover over the Theme Customizer {icon name="play-circle"} "Actions" icon and, in the popup, click "{icon name="search-plus"} View". This opens the Theme Customizer page.

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-8 col-sm-offset-2 thumbnail")}{img src="dl1422"}%%%::Theme Customizer Checkbox::{DIV}{DIV}

!! How to use it
The tool works with the theme that is currently active at the site. Shown here are the Slate and TheNews themes.

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-10 col-sm-offset-1 thumbnail")}{img src="dl1420"}%%%::Slate theme::{DIV}{DIV}

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-10 col-sm-offset-1 thumbnail")}{img src="dl1421"}%%%::TheNews theme::{DIV}{DIV}

There are sections of the tool for these page elements: page colors, fonts, headings, tables, buttons, forms, lists, navbar, dropdowns, tabs, alerts, and icons. At the page bottom there is a "Select a section" link for navigating to the sections in the page.

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-6 col-sm-offset-3 thumbnail")}{img src="dl1423"}%%%::Section selection::{DIV}{DIV}

Colors can be selected by clicking in the square sample area for each item, which causes a colorpicker to display. Or the CSS hex value can be edited directly.

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-6 col-sm-offset-3 thumbnail")}{img src="dl1411"}%%%::Colorpicker::{DIV}{DIV}

Changes such as font size and style affect the those properties on the HTML body tag, meaning that the changes will be implemented throughout the site unless they are overridden by a more-specfic CSS rule for a particular page element.

!!! How to use the results - as CSS
After making the desired edits, to save the results as CSS code, click the "Generate Custom CSS" button. 

{DIV(class="row margin-bottom-md")}{DIV(class="col-sm-8 col-sm-offset-2 thumbnail")}{img src="dl1424"}%%%::Custom CSS and custom Less variables::{DIV}{DIV}

To use the new custom CSS, copy it from the text area and paste it into the Custom CSS text area on the Look and Feel admin page. Generating custom CSS with this tool actually produces the CSS for all the items on the Theme Customizer page, not just for the edited/changed items. To reduce the amount of redundant CSS rules, the custom CSS could be edited to retain just the changed rules, and the other, unchanged rules could be removed (if you are familiar enough with editing CSS). [[This redundancy should be improved in future development.] 

As Look and Feel custom CSS, these style rules will of course affect any theme that is in effect at the site, and could have unwanted effects if a theme is selected for use other than the theme whose rules were customized with the Style Guide tool. This is something to consider if more than one theme is used at the site, such as if users have permission to select a theme for their personal use. 

!!! How to use the results - as Less variables
Alternatively, the style changes can be saved as custom Less code. This can then be copied and pasted into the "Custom Less" text area on the Look and Feel page, under the "Customization" tab.  (More information on using custom Less variables is coming soon.)

~tc~ (alias(Style Guide)) ~/tc~