Draft `ComboBox` and `Menu` layer

1 files changed, 67 insertions, 0 deletions

diff --git a/graphics/src/widget/combo_box.rs b/graphics/src/widget/combo_box.rs
new file mode 100644
index 00000000..27ea762a
--- /dev/null
+++ b/graphics/src/widget/combo_box.rs
@@ -0,0 +1,67 @@
+use crate::backend::{self, Backend};
+use crate::{Primitive, Renderer};
+use iced_native::{
+    mouse, Background, Color, Font, HorizontalAlignment, Point, Rectangle,
+    VerticalAlignment,
+};
+
+pub use iced_native::ComboBox;
+
+impl<B> iced_native::combo_box::Renderer for Renderer<B>
+where
+    B: Backend + backend::Text,
+{
+    const DEFAULT_PADDING: u16 = 5;
+
+    fn draw(
+        &mut self,
+        bounds: Rectangle,
+        cursor_position: Point,
+        selected: Option<String>,
+        text_size: u16,
+        padding: u16,
+    ) -> Self::Output {
+        let is_mouse_over = bounds.contains(cursor_position);
+
+        let background = Primitive::Quad {
+            bounds,
+            background: Background::Color([0.87, 0.87, 0.87].into()),
+            border_color: if is_mouse_over {
+                Color::BLACK
+            } else {
+                [0.7, 0.7, 0.7].into()
+            },
+            border_width: 1,
+            border_radius: 0,
+        };
+
+        (
+            if let Some(label) = selected {
+                let label = Primitive::Text {
+                    content: label,
+                    size: f32::from(text_size),
+                    font: Font::Default,
+                    color: Color::BLACK,
+                    bounds: Rectangle {
+                        x: bounds.x + f32::from(padding),
+                        y: bounds.center_y(),
+                        ..bounds
+                    },
+                    horizontal_alignment: HorizontalAlignment::Left,
+                    vertical_alignment: VerticalAlignment::Center,
+                };
+
+                Primitive::Group {
+                    primitives: vec![background, label],
+                }
+            } else {
+                background
+            },
+            if is_mouse_over {
+                mouse::Interaction::Pointer
+            } else {
+                mouse::Interaction::default()
+            },
+        )
+    }
+}