From d07a4de80539182ee3849655fcbf28c5cc52379a Mon Sep 17 00:00:00 2001
From: Victoria Brekenfeld <victoria@system76.com>
Date: Tue, 13 Jun 2023 18:32:38 +0200
Subject: [PATCH] iced: Add tab_text helper widget

---
 src/utils/{iced.rs => iced/mod.rs} |   6 +-
 src/utils/iced/tab_text.rs         | 126 +++++++++++++++++++++++++++++
 2 files changed, 129 insertions(+), 3 deletions(-)
 rename src/utils/{iced.rs => iced/mod.rs} (99%)
 create mode 100644 src/utils/iced/tab_text.rs

diff --git a/src/utils/iced.rs b/src/utils/iced/mod.rs
similarity index 99%
rename from src/utils/iced.rs
rename to src/utils/iced/mod.rs
index fabf8663..16882109 100644
--- a/src/utils/iced.rs
+++ b/src/utils/iced/mod.rs
@@ -28,6 +28,8 @@ use iced_tiny_skia::{
 };
 pub type Element<'a, Message> = cosmic::iced::Element<'a, Message, IcedRenderer>;
 
+pub mod tab_text;
+
 use ordered_float::OrderedFloat;
 use smithay::{
     backend::{
@@ -284,10 +286,8 @@ impl<P: Program + Send + 'static> IcedElementInternal<P> {
                 &mut NullClipboard,
                 &mut self.debug,
             )
-            .1
-            .map(|command| command.actions());
+            .1;
 
-        let actions = actions.unwrap_or_default();
         actions
             .into_iter()
             .filter_map(|action| {
diff --git a/src/utils/iced/tab_text.rs b/src/utils/iced/tab_text.rs
new file mode 100644
index 00000000..da31b59e
--- /dev/null
+++ b/src/utils/iced/tab_text.rs
@@ -0,0 +1,126 @@
+use cosmic::{
+    iced::Element,
+    iced_core::{
+        layout::{Layout, Limits, Node},
+        renderer,
+        widget::{Tree, Widget},
+        Length, Point, Rectangle, Size,
+    },
+    iced_widget::text::StyleSheet as TextStyleSheet,
+};
+
+pub struct TabText<'a, Message, Renderer>
+where
+    Renderer: cosmic::iced_core::Renderer,
+    Renderer::Theme: TextStyleSheet,
+{
+    text: Element<'a, Message, Renderer>,
+    height: Length,
+    width: Length,
+}
+
+pub fn tab_text<'a, Message, Renderer>(
+    text: impl Into<Element<'a, Message, Renderer>>,
+) -> TabText<'a, Message, Renderer>
+where
+    Renderer: cosmic::iced_core::Renderer,
+    Renderer::Theme: TextStyleSheet,
+{
+    TabText::new(text)
+}
+
+impl<'a, Message, Renderer> TabText<'a, Message, Renderer>
+where
+    Renderer: cosmic::iced_core::Renderer,
+    Renderer::Theme: TextStyleSheet,
+{
+    pub fn new(text: impl Into<Element<'a, Message, Renderer>>) -> Self {
+        TabText {
+            width: Length::Shrink,
+            height: Length::Shrink,
+            text: text.into(),
+        }
+    }
+
+    pub fn width(mut self, width: impl Into<Length>) -> Self {
+        let width = width.into();
+        self.width = width;
+        self
+    }
+
+    pub fn height(mut self, height: impl Into<Length>) -> Self {
+        let height = height.into();
+        self.height = height;
+        self
+    }
+}
+
+impl<'a, Message, Renderer> Widget<Message, Renderer> for TabText<'a, Message, Renderer>
+where
+    Renderer: cosmic::iced_core::Renderer,
+    Renderer::Theme: TextStyleSheet,
+{
+    fn width(&self) -> Length {
+        self.width
+    }
+    fn height(&self) -> Length {
+        self.height
+    }
+
+    fn children(&self) -> Vec<Tree> {
+        vec![Tree::new(&self.text)]
+    }
+
+    fn diff(&mut self, tree: &mut Tree) {
+        tree.diff_children(std::slice::from_mut(&mut self.text))
+    }
+
+    fn layout(&self, renderer: &Renderer, limits: &Limits) -> Node {
+        let limits = limits.width(self.width).height(self.height);
+        let child_limits = Limits::new(
+            Size::new(limits.min().width, limits.min().height),
+            Size::new(limits.max().width * 2., limits.max().height),
+        );
+        let content = self.text.as_widget().layout(renderer, &child_limits);
+        let size = limits.resolve(content.size());
+
+        Node::with_children(size, vec![content])
+    }
+
+    fn draw(
+        &self,
+        tree: &Tree,
+        renderer: &mut Renderer,
+        theme: &Renderer::Theme,
+        style: &renderer::Style,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        _viewport: &Rectangle,
+    ) {
+        let bounds = layout.bounds();
+        let content_layout = layout.children().next().unwrap();
+
+        renderer.with_layer(bounds, |renderer| {
+            self.text.as_widget().draw(
+                &tree.children[0],
+                renderer,
+                theme,
+                style,
+                content_layout,
+                cursor_position,
+                &bounds,
+            );
+        });
+    }
+}
+
+impl<'a, Message, Renderer> Into<Element<'a, Message, Renderer>> for TabText<'a, Message, Renderer>
+where
+    Renderer: cosmic::iced_core::Renderer + 'a,
+    Renderer::Theme: TextStyleSheet,
+    Message: 'a,
+{
+    fn into(self) -> Element<'a, Message, Renderer> {
+        Element::new(self)
+    }
+}