1 files changed, 157 insertions, 0 deletions
diff --git a/src/button.rs b/src/button.rs
new file mode 100644
index 0000000..2800ac4
--- /dev/null
+++ b/src/button.rs
@@ -0,0 +1,157 @@
+use iced_widget::button::{Catalog, Status, Style, StyleFn};
+use iced_widget::core::{Background, Border, Color, border};
+
+use crate::Theme;
+use crate::utils::{
+    HOVERED_LAYER_OPACITY, PRESSED_LAYER_OPACITY, disabled_container,
+    disabled_text, elevation, mix, shadow_from_elevation,
+};
+
+impl Catalog for Theme {
+    type Class<'a> = StyleFn<'a, Self>;
+
+    fn default<'a>() -> Self::Class<'a> {
+        Box::new(filled)
+    }
+
+    fn style(&self, class: &Self::Class<'_>, status: Status) -> Style {
+        class(self, status)
+    }
+}
+
+fn button(
+    background: Color,
+    foreground: Color,
+    disabled: Color,
+    shadow_color: Color,
+    elevation_level: u8,
+    status: Status,
+) -> Style {
+    let active = Style {
+        background: Some(Background::Color(background)),
+        text_color: foreground,
+        border: border::rounded(400),
+        shadow: shadow_from_elevation(elevation(elevation_level), shadow_color),
+        snap: cfg!(feature = "crisp"),
+    };
+
+    match status {
+        Status::Active => active,
+        Status::Pressed => Style {
+            background: Some(Background::Color(mix(
+                background,
+                foreground,
+                HOVERED_LAYER_OPACITY,
+            ))),
+            ..active
+        },
+        Status::Hovered => Style {
+            background: Some(Background::Color(mix(
+                background,
+                foreground,
+                PRESSED_LAYER_OPACITY,
+            ))),
+            shadow: shadow_from_elevation(
+                elevation(elevation_level + 1),
+                shadow_color,
+            ),
+            ..active
+        },
+        Status::Disabled => Style {
+            background: Some(Background::Color(disabled_container(disabled))),
+            text_color: disabled_text(disabled),
+            border: border::rounded(400),
+            ..Default::default()
+        },
+    }
+}
+
+pub fn elevated(theme: &Theme, status: Status) -> Style {
+    let surface = theme.colors().surface;
+
+    let foreground = theme.colors().primary.color;
+    let background = surface.surface_container.low;
+    let disabled = surface.on_surface;
+
+    let shadow_color = theme.colors().shadow;
+
+    button(background, foreground, disabled, shadow_color, 1, status)
+}
+
+pub fn filled(theme: &Theme, status: Status) -> Style {
+    let primary = theme.colors().primary;
+
+    let foreground = primary.on_primary;
+    let background = primary.color;
+    let disabled = theme.colors().surface.on_surface;
+
+    let shadow_color = theme.colors().shadow;
+
+    button(background, foreground, disabled, shadow_color, 0, status)
+}
+
+pub fn filled_tonal(theme: &Theme, status: Status) -> Style {
+    let secondary = theme.colors().secondary;
+
+    let foreground = secondary.on_secondary_container;
+    let background = secondary.secondary_container;
+    let disabled = theme.colors().surface.on_surface;
+    let shadow_color = theme.colors().shadow;
+
+    button(background, foreground, disabled, shadow_color, 0, status)
+}
+
+pub fn outlined(theme: &Theme, status: Status) -> Style {
+    let foreground = theme.colors().primary.color;
+    let background = Color::TRANSPARENT;
+    let disabled = theme.colors().surface.on_surface;
+
+    let outline = theme.colors().outline.color;
+
+    let border = match status {
+        Status::Active | Status::Pressed | Status::Hovered => Border {
+            color: outline,
+            width: 1.0,
+            radius: 400.into(),
+        },
+        Status::Disabled => Border {
+            color: disabled_container(disabled),
+            width: 1.0,
+            radius: 400.into(),
+        },
+    };
+
+    let style = button(
+        background,
+        foreground,
+        disabled,
+        Color::TRANSPARENT,
+        0,
+        status,
+    );
+
+    Style { border, ..style }
+}
+
+pub fn text(theme: &Theme, status: Status) -> Style {
+    let foreground = theme.colors().primary.color;
+    let background = Color::TRANSPARENT;
+    let disabled = theme.colors().surface.on_surface;
+
+    let style = button(
+        background,
+        foreground,
+        disabled,
+        Color::TRANSPARENT,
+        0,
+        status,
+    );
+
+    match status {
+        Status::Hovered | Status::Pressed => style,
+        Status::Active | Status::Disabled => Style {
+            background: None,
+            ..style
+        },
+    }
+}