new padding widget

src/lib.rs

@@ -23,8 +23,11 @@ pub mod prelude {
     pub use crate::event::application::Event as ApplicationEvent;
     pub use crate::event::window::Event as WindowEvent;
     pub use crate::platform::Platform;
+    pub use crate::widget::Column;
+    pub use crate::widget::IntoPadded;
     pub use crate::widget::Label;
     pub use crate::widget::Row;
+    pub use crate::widget::Padding;
     pub use crate::widget::Widget;
     pub use crate::window::*;
     pub use crate::rgb;

src/main.rs

@@ -8,7 +8,6 @@
 
 use abletk::plugin::QuitPlugin;
 use abletk::prelude::*;
-use abletk::widget::Column;
 
 #[launch]
 fn launch() -> _ {
@@ -22,7 +21,8 @@ fn launch() -> _ {
                     .add(Label::new("World!"))
                     .add(Label::new("AbleTK!")))
                 .add(Label::new("this is a label!")
-                    .bg_color(rgb!(0xFF0000FF))))
+                    .bg_color(rgb!(0xFF0000FF)))
+                .padding_left(10))
         .on_event(WindowEvent::Closed, |_, window| {
             window.set_title("CLOSING!")
         }))

src/widget/mod.rs

@@ -8,11 +8,13 @@
 
 mod column;
 mod label;
+mod padding;
 mod row;
 
 use abletk_common::Renderer;
 pub use column::*;
 pub use label::*;
+pub use padding::*;
 pub use row::*;
 
 use crate::layout::position::Position;

src/widget/padding.rs

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2022 Umut İnan Erdoğan <umutinanerdogan@pm.me>
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+use crate::{layout::position::Position, widget::Widget};
+use abletk_common::Renderer;
+
+pub struct Padding<W: Widget> {
+    widget: W,
+    left: u32,
+    right: u32,
+    top: u32,
+    bottom: u32,
+}
+
+impl<W: Widget> Widget for Padding<W> {
+    fn draw(&self, renderer: &mut Renderer) {
+        self.widget.draw(renderer)
+    }
+
+    fn position(&self, renderer: &mut Renderer) -> Position {
+        let pos = self.widget.position(renderer);
+
+        Position::new(
+            self.left,
+            self.top,
+            pos.width() + self.right,
+            pos.height() + self.bottom,
+        )
+    }
+}
+
+impl<W: Widget> Padding<W> {
+    pub fn new(
+        left: u32,
+        right: u32,
+        top: u32,
+        bottom: u32,
+        widget: W,
+    ) -> Self {
+        Self {
+            widget,
+            left,
+            right,
+            top,
+            bottom,
+        }
+    }
+}
+
+pub trait IntoPadded<W: Widget> {
+    fn padding(self, left: u32, right: u32, top: u32, bottom: u32) -> Padding<W>;
+    fn padding_x(self, left: u32, right: u32) -> Padding<W>;
+    fn padding_y(self, top: u32, bottom: u32) -> Padding<W>;
+    fn padding_left(self, left: u32) -> Padding<W>;
+    fn padding_right(self, right: u32) -> Padding<W>;
+    fn padding_top(self, top: u32) -> Padding<W>;
+    fn padding_bottom(self, bottom: u32) -> Padding<W>;
+    fn padding_all(self, padding: u32) -> Padding<W>;
+}
+
+impl<W: Widget> IntoPadded<W> for W {
+    fn padding(self, left: u32, right: u32, top: u32, bottom: u32) -> Padding<W> {
+        Padding::new(left, right, top, bottom, self)
+    }
+
+    fn padding_x(self, left: u32, right: u32) -> Padding<W> {
+        Padding::new(left, right, 0, 0, self)
+    }
+
+    fn padding_y(self, top: u32, bottom: u32) -> Padding<W> {
+        Padding::new(0, 0, top, bottom, self)
+    }
+
+    fn padding_left(self, left: u32) -> Padding<W> {
+        Padding::new(left, 0, 0, 0, self)
+    }
+
+    fn padding_right(self, right: u32) -> Padding<W> {
+        Padding::new(0, right, 0, 0, self)
+    }
+
+    fn padding_top(self, top: u32) -> Padding<W> {
+        Padding::new(0, 0, top, 0, self)
+    }
+
+    fn padding_bottom(self, bottom: u32) -> Padding<W> {
+        Padding::new(0, 0, 0, bottom, self)
+    }
+
+    fn padding_all(self, padding: u32) -> Padding<W> {
+        Padding::new(padding, padding, padding, padding, self)
+    }
+}