Implement `radio::Renderer` and `slider::Renderer` in `ggez` example

1 files changed, 82 insertions, 0 deletions

diff --git a/examples/ggez/renderer/slider.rs b/examples/ggez/renderer/slider.rs
new file mode 100644
index 00000000..86757127
--- /dev/null
+++ b/examples/ggez/renderer/slider.rs
@@ -0,0 +1,82 @@
+use super::Renderer;
+
+use ggez::graphics::{DrawParam, Rect};
+use iced::{slider, MouseCursor, Point, Rectangle};
+use std::ops::RangeInclusive;
+
+const RAIL: Rect = Rect {
+    x: 98.0,
+    y: 56.0,
+    w: 1.0,
+    h: 4.0,
+};
+
+const MARKER: Rect = Rect {
+    x: RAIL.x + 28.0,
+    y: RAIL.y,
+    w: 16.0,
+    h: 24.0,
+};
+
+impl slider::Renderer for Renderer<'_> {
+    fn draw(
+        &mut self,
+        cursor_position: Point,
+        bounds: Rectangle<f32>,
+        state: &slider::State,
+        range: RangeInclusive<f32>,
+        value: f32,
+    ) -> MouseCursor {
+        let width = self.spritesheet.width() as f32;
+        let height = self.spritesheet.height() as f32;
+
+        self.sprites.add(DrawParam {
+            src: Rect {
+                x: RAIL.x / width,
+                y: RAIL.y / height,
+                w: RAIL.w / width,
+                h: RAIL.h / height,
+            },
+            dest: ggez::mint::Point2 {
+                x: bounds.x + MARKER.w as f32 / 2.0,
+                y: bounds.y + 12.5,
+            },
+            scale: ggez::mint::Vector2 {
+                x: bounds.width - MARKER.w as f32,
+                y: 1.0,
+            },
+            ..DrawParam::default()
+        });
+
+        let (range_start, range_end) = range.into_inner();
+
+        let marker_offset = (bounds.width - MARKER.w as f32)
+            * ((value - range_start) / (range_end - range_start).max(1.0));
+
+        let mouse_over = bounds.contains(cursor_position);
+        let is_active = state.is_dragging() || mouse_over;
+
+        self.sprites.add(DrawParam {
+            src: Rect {
+                x: (MARKER.x + (if is_active { MARKER.w } else { 0.0 }))
+                    / width,
+                y: MARKER.y / height,
+                w: MARKER.w / width,
+                h: MARKER.h / height,
+            },
+            dest: ggez::mint::Point2 {
+                x: bounds.x + marker_offset.round(),
+                y: bounds.y + (if state.is_dragging() { 2.0 } else { 0.0 }),
+            },
+            ..DrawParam::default()
+        });
+
+        if state.is_dragging() {
+            MouseCursor::Grabbing
+        } else if mouse_over {
+            MouseCursor::Grab
+        } else {
+            MouseCursor::OutOfBounds
+        }
+    }
+}