📚 DOCS: Add page on CSS classes (#7)

README.md

@@ -50,7 +50,7 @@ This package is an iteration on sphinx-panels and intends to replace it.
   - `tabbed` -> `tab-item`
   - include `:sync:` option to synchronize tab selection across sets
 - Minimises direct use of CSS classes (encourage to not use them)
-  - More declarative, easy to understand options
+  - More declarative, easy to understand options, easier to validate
   - Easier to work with non-HTML outputs
   - Easier to improve/refactor
 - Updated Bootstrap CSS v4 -> v5
@@ -65,9 +65,6 @@ This package is an iteration on sphinx-panels and intends to replace it.
   - card header/footer syntax? (don't really want to have to use separate directives for these, hence `^^^`/`+++` syntax)
   - auto-wrap `grid-item` and `tab-item`, if not already inside `grid` or `tab-set`?
 
-note that directly using classes should be used as a "last resort",
-and to please open an issue if you find you are commonly using a certain class.
-
 grids items cannot contain headers; is this in anyway possible with docutils structure?
 
 naming of directives/roles: standard prefix?
@@ -82,8 +79,6 @@ horizontal card (grid row inside card, picture on left)
 
 horizontally scrollable cards: (see <https://stackoverflow.com/questions/35993300/horizontally-scrollable-list-of-cards-in-bootstrap>)
 
-div directive
-
 subtitle for card (see <https://material.io/components/cards#anatomy>)
 
 paragraph and tab-set in grid-item

docs/additional.md

@@ -7,7 +7,7 @@ These are additional components that are not part of the standard Materials Desi
 ## `article-info`
 
 This directive is used to display a block of information about an article,
-normally positioned just below the title of the article (show below with non-standard outline).
+normally positioned just below the title of the article (shown below with non-standard outline).
 
 ```{article-info}
 :avatar: images/ebp-logo.png
@@ -45,7 +45,7 @@ so you can use substitutions like:
 ### options
 
 avatar
-: A URI (relative file path or URL) to an image for use as the avatar.
+: A URI (relative file path or URL) to an image for use as the avatar (a user portrait, logo or branded graphic).
 
 avatar-alt
 : Alternative text for the avatar.

docs/cards.md

@@ -175,8 +175,8 @@ link
 link-type
 : Type of link: `url` (default), `ref`, `doc`, `any`.
 
-no-shadow
-: Do not draw a shadow around the card.
+shadow
+: The size of the shadow below the card: `none`, `sm` (default), `md`, `lg`.
 
 class-card
 : Additional CSS classes for the card container element.

docs/conf.py

@@ -16,7 +16,7 @@
     ]
 
 exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
-myst_enable_extensions = ["colon_fence", "deflist", "substitution"]
+myst_enable_extensions = ["colon_fence", "deflist", "substitution", "html_image"]
 
 myst_substitutions = {
     "loremipsum": "Lorem ipsum dolor sit amet, consectetur adipiscing elit. "

docs/css_classes.md

@@ -0,0 +1,275 @@
+# CSS Classes
+
+For most roles/directive, it is preferentially recommended to use the available options to style components since, for example, this allows for better cross-output-format styling.
+
+But for custom cases, these roles/directives also provide `class` options for adding CSS classes directly to element, or you can directly use the `div` directive.
+All CSS classes that are part of sphinx-design are prefixed with `sd-`.
+
+:::{div} sd-text-center sd-font-italic sd-text-primary
+Some CSS styled text
+:::
+
+`````{dropdown} Syntax
+:icon: code
+:color: light
+
+````{tab-set-code}
+```{literalinclude} ./snippets/myst/div-basic.txt
+:language: markdown
+```
+```{literalinclude} ./snippets/rst/div-basic.txt
+:language: rst
+```
+````
+`````
+
+If you find yourself using a class(es) often, consider openeing an issue to request a new role/directive or option!
+
+## Text
+
+Classes are available for styling and alignment:
+
+- Alignment:
+  - `sd-text-justify`
+  - `sd-text-left`
+  - `sd-text-right`
+  - `sd-text-center`
+- Weight:
+  - `sd-font-weight-light`
+  - `sd-font-weight-lighter`
+  - `sd-font-weight-normal`
+  - `sd-font-weight-bold`
+  - `sd-font-weight-bolder`
+- Style
+  - `sd-font-italic`
+  - `sd-text-decoration-none`
+  - `sd-text-lowercase`
+  - `sd-text-uppercase`
+  - `sd-text-capitalize`
+- Wrapping
+  - `sd-text-wrap`
+  - `sd-text-nowrap`
+  - `sd-text-truncate` (requires `display: inline-block` or `display: block`)
+- Color
+  - `sd-text-{semantic color name}` (uses `--sd-color-{semantic color name}` CSS variable)
+  - `sd-bg-text-{semantic color name}` (uses `--sd-color-{semantic color name}-text` CSS variable)
+
+## Display
+
+Define the layout of an element and its children (see [`display`](https://developer.mozilla.org/en-US/docs/Web/CSS/display)):
+
+- `sd-d-none`
+- `sd-d-inline`
+- `sd-d-inline-block`
+- `sd-d-block`
+- `sd-d-grid`
+- `sd-d-flex`
+- `sd-d-inline-flex`
+
+Variants are also available for screen-sizes (xs, sm, md, lg), e.g. `sd-d-sm-none`.
+
+Items within a flex box can also be aligned:
+
+- `sd-align-items-start`
+- `sd-align-items-end`
+- `sd-align-items-center`
+
+## Sizing
+
+Size objects width/height by percentage:
+
+- `sd-width-25`, `sd-height-25`
+- `sd-width-50`, `sd-height-50`
+- `sd-width-75`, `sd-height-75`
+- `sd-width-100`, `sd-height-100`
+- `sd-width-auto`, `sd-height-auto`
+
+## Spacing
+
+Padding (`p`) and margins (`m`) can be controlled with these classes for; (`t`)op, (`r`)ight, (`b`)ottom, (`l`)eft, `x` (left and right), and `y` (top and bottom).
+
+Spacing are defined on a scale of 0 to 5, for example `sd-px-1` or `sd-mt-5`.
+
+Note, for grids the special gutter classes `sd-g-{screen-size}-{spacing}` are used to set margins, or for only `x`/`y`; `sd-gx-{screen-size}-{spacing}`.
+
+## Colors
+
+Colors can be set using [CSS variable](./css_variables.md), they are defined for the semantic color names: primary, secondary, success, warning, danger, info, light, dark, and muted.
+
+- `sd-bg-{name}`
+- `sd-bg-text-{name}`
+- `sd-text-{name}`
+- `sd-outline-{name}`
+
+Additional transparent colouring:
+
+- `sd-bg-transparent`
+- `sd-outline-transparent`
+- `sd-text-transparent`
+
+## Borders
+
+Borders can be applied to elements of thickness 0 to 5, for all are a specific side:
+
+- `sd-border-{thickness}`
+- `sd-border-top-{thickness}`
+- `sd-border-bottom-{thickness}`
+- `sd-border-right-{thickness}`
+- `sd-border-left-{thickness}`
+
+````{grid} 1 2 3 3
+:gutter: 1
+
+```{grid-item-card}
+:shadow: none
+:class-card: sd-border-0
+
+`sd-border-0`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-border-1
+
+`sd-border-1`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-border-2
+
+`sd-border-2`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-border-3
+
+`sd-border-3`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-border-4
+
+`sd-border-4`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-border-5
+
+`sd-border-5`
+```
+````
+
+Border can be rounded by different amounts using:
+
+- `sd-rounded-0`
+- `sd-rounded-1`
+- `sd-rounded-2`
+- `sd-rounded-3`
+- `sd-rounded-pill`
+- `sd-rounded-circle`
+
+````{grid} 1 2 3 3
+:gutter: 1
+
+```{grid-item-card}
+:shadow: none
+:class-card: sd-rounded-0
+
+`sd-rounded-0`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-rounded-1
+
+`sd-rounded-1`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-rounded-2
+
+`sd-rounded-2`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-rounded-3
+
+`sd-rounded-3`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-rounded-pill
+
+`sd-rounded-pill`
+```
+```{grid-item-card}
+:shadow: none
+:class-card: sd-rounded-circle
+
+`sd-rounded-circle`
+```
+````
+
+## Shadows
+
+Shadows can be applied to box elements (the color of the shadow is defined using `--sd-color-shadow` CSS variable):
+
+- `sd-shadow-none`
+- `sd-shadow-sm`
+- `sd-shadow-md`
+- `sd-shadow-lg`
+
+````{grid} 1 2 3 4
+:gutter: 3
+
+```{grid-item-card}
+:shadow: none
+
+`sd-shadow-none`
+```
+```{grid-item-card}
+:shadow: sm
+
+`sd-shadow-sm`
+```
+```{grid-item-card}
+:shadow: md
+
+`sd-shadow-md`
+```
+```{grid-item-card}
+:shadow: lg
+
+`sd-shadow-lg`
+```
+````
+
+## Avatars
+
+Avatars can represent a user or a brand,with a logo or branded graphic ([see Material Design imagery](https://material.io/design/communication/imagery.html#informational-imagery)).
+
+These classes center an image, set their size and add a circular crop:
+
+- `sd-avatar-xs`
+- `sd-avatar-sm`
+- `sd-avatar-md`
+- `sd-avatar-lg`
+- `sd-avatar-xl`
+
+````{grid} 1 2 3 3
+:gutter: 1
+
+```{grid-item-card} sd-avatar-xs
+<img src="images/ebp-logo.png" class="sd-avatar-xs sd-border-1">
+```
+```{grid-item-card} sd-avatar-sm
+<img src="images/ebp-logo.png" class="sd-avatar-sm sd-border-1">
+```
+```{grid-item-card} sd-avatar-md
+<img src="images/ebp-logo.png" class="sd-avatar-md sd-border-1">
+```
+```{grid-item-card} sd-avatar-lg
+<img src="images/ebp-logo.png" class="sd-avatar-lg sd-border-1">
+```
+```{grid-item-card} sd-avatar-xl
+<img src="images/ebp-logo.png" class="sd-avatar-xl sd-border-1">
+```
+````

docs/css.md → docs/css_variables.md

@@ -8,6 +8,15 @@ html_static_path = ['_static']
 html_css_files = ['custom.css']
 ```
 
+For colors, there are nine semantic colors that can be defined.
+For each of these colors you should define:
+
+- `--sd-color-{name}` as the actual color
+- `--sd-color-{name}-highlight` as the color used when the component is highlighted
+  (e.g. if hovering over a button). By default, this is a 15% darker version of the original color.
+- `--sd-color-{name}-text` as the color to use for text displayed on top of the color.
+  By default, this is dark grey for light colors and white for dark colors.
+
 The defaults are:
 
 ```css

docs/index.md

@@ -38,7 +38,8 @@ additional
 :caption: Styling
 :hidden:
 
-css
+css_variables
+css_classes
 ```
 
 ```{toctree}
@@ -92,7 +93,7 @@ Roles and directives for {bdg-primary}`badges` and other components.
 :::
 
 :::{grid-item-card} {octicon-16}`image` CSS Styling
-:link: css
+:link: css_variables
 :link-type: doc
 
 Change the default colors and other CSS.

docs/snippets/myst/div-basic.txt

@@ -0,0 +1,3 @@
+:::{div} sd-text-center sd-font-italic sd-text-primary
+Some CSS styled text
+:::

docs/snippets/rst/div-basic.txt

@@ -0,0 +1,3 @@
+.. div:: sd-text-center sd-font-italic sd-text-primary
+
+    Some CSS styled text

sphinx_design/badges_buttons.py

@@ -165,7 +165,7 @@ def run(self) -> List[nodes.Node]:
         if "click-parent" in self.options:
             classes.append("sd-stretched-link")
         if "shadow" in self.options:
-            classes.append("sd-shadow")
+            classes.append("sd-shadow-sm")
         if "class" in self.options:
             classes.extend(self.options["class"])
         node = self.create_ref_node(rawtext, target, bool(self.content), classes)