From 841d8d6a772ff4bfb61a2dd9b578aca921797989 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Capucho?= <jcapucho7@gmail.com>
Date: Fri, 10 Sep 2021 21:17:06 +0100
Subject: [PATCH] Add checkbox rendering logic for iced

---
 voxygen/src/ui/ice/renderer/style/checkbox.rs | 74 +++++++++++++++++++
 voxygen/src/ui/ice/renderer/style/mod.rs      |  1 +
 .../src/ui/ice/renderer/widget/checkbox.rs    | 64 ++++++++++++++++
 voxygen/src/ui/ice/renderer/widget/mod.rs     |  1 +
 4 files changed, 140 insertions(+)
 create mode 100644 voxygen/src/ui/ice/renderer/style/checkbox.rs
 create mode 100644 voxygen/src/ui/ice/renderer/widget/checkbox.rs

diff --git a/voxygen/src/ui/ice/renderer/style/checkbox.rs b/voxygen/src/ui/ice/renderer/style/checkbox.rs
new file mode 100644
index 0000000000..943d44fe5f
--- /dev/null
+++ b/voxygen/src/ui/ice/renderer/style/checkbox.rs
@@ -0,0 +1,74 @@
+use super::super::super::widget::image;
+
+#[derive(Clone, Copy)]
+struct Background {
+    default: image::Handle,
+    hover: image::Handle,
+    press: image::Handle,
+}
+
+impl Background {
+    fn new(image: image::Handle) -> Self {
+        Self {
+            default: image,
+            hover: image,
+            press: image,
+        }
+    }
+}
+
+#[derive(Clone, Copy)]
+pub struct Style {
+    background: Option<Background>,
+    checked: Option<image::Handle>,
+}
+
+impl Style {
+    pub fn new(image: image::Handle, checked: image::Handle) -> Self {
+        Self {
+            background: Some(Background::new(image)),
+            checked: Some(checked),
+        }
+    }
+
+    pub fn hover_image(mut self, image: image::Handle) -> Self {
+        self.background = Some(match self.background {
+            Some(mut background) => {
+                background.hover = image;
+                background
+            },
+            None => Background::new(image),
+        });
+        self
+    }
+
+    pub fn press_image(mut self, image: image::Handle) -> Self {
+        self.background = Some(match self.background {
+            Some(mut background) => {
+                background.press = image;
+                background
+            },
+            None => Background::new(image),
+        });
+        self
+    }
+
+    pub fn pressed(&self) -> Option<image::Handle> { self.background.as_ref().map(|b| b.press) }
+
+    pub fn checked(&self) -> Option<image::Handle> { self.checked }
+
+    pub fn hovered(&self) -> Option<image::Handle> { self.background.as_ref().map(|b| b.hover) }
+
+    pub fn background(&self) -> Option<image::Handle> {
+        self.background.as_ref().map(|b| b.default)
+    }
+}
+
+impl Default for Style {
+    fn default() -> Self {
+        Self {
+            background: None,
+            checked: None,
+        }
+    }
+}
diff --git a/voxygen/src/ui/ice/renderer/style/mod.rs b/voxygen/src/ui/ice/renderer/style/mod.rs
index 04297da836..8dc82f0179 100644
--- a/voxygen/src/ui/ice/renderer/style/mod.rs
+++ b/voxygen/src/ui/ice/renderer/style/mod.rs
@@ -1,4 +1,5 @@
 pub mod button;
+pub mod checkbox;
 pub mod container;
 pub mod scrollable;
 pub mod slider;
diff --git a/voxygen/src/ui/ice/renderer/widget/checkbox.rs b/voxygen/src/ui/ice/renderer/widget/checkbox.rs
new file mode 100644
index 0000000000..7b51e83ad6
--- /dev/null
+++ b/voxygen/src/ui/ice/renderer/widget/checkbox.rs
@@ -0,0 +1,64 @@
+use super::super::{super::Rotation, style, IcedRenderer, Primitive};
+use iced::{checkbox, mouse, Rectangle};
+
+impl checkbox::Renderer for IcedRenderer {
+    // TODO: what if this gets large enough to not be copied around?
+    type Style = style::checkbox::Style;
+
+    const DEFAULT_SIZE: u16 = 20;
+    const DEFAULT_SPACING: u16 = 15;
+
+    fn draw(
+        &mut self,
+        bounds: Rectangle,
+        is_checked: bool,
+        is_mouse_over: bool,
+        (label, _): Self::Output,
+        style: &Self::Style,
+    ) -> Self::Output {
+        let default_rect = || Primitive::Rectangle {
+            bounds,
+            linear_color: vek::Rgba::broadcast(1.0),
+        };
+
+        let background_image = match (is_checked, is_mouse_over) {
+            (true, _) => style.pressed(),
+            (_, true) => style.hovered(),
+            _ => style.background(),
+        };
+
+        let background = background_image
+            .map(|image| Primitive::Image {
+                handle: (image, Rotation::None),
+                bounds,
+                color: vek::Rgba::broadcast(255),
+                source_rect: None,
+            })
+            .unwrap_or_else(default_rect);
+
+        (
+            Primitive::Group {
+                primitives: if is_checked {
+                    let check = style
+                        .pressed()
+                        .map(|image| Primitive::Image {
+                            handle: (image, Rotation::None),
+                            bounds,
+                            color: vek::Rgba::broadcast(255),
+                            source_rect: None,
+                        })
+                        .unwrap_or_else(default_rect);
+
+                    vec![background, check, label]
+                } else {
+                    vec![background, label]
+                },
+            },
+            if is_mouse_over {
+                mouse::Interaction::Pointer
+            } else {
+                mouse::Interaction::default()
+            },
+        )
+    }
+}
diff --git a/voxygen/src/ui/ice/renderer/widget/mod.rs b/voxygen/src/ui/ice/renderer/widget/mod.rs
index 8f9c84758e..c58b3aa152 100644
--- a/voxygen/src/ui/ice/renderer/widget/mod.rs
+++ b/voxygen/src/ui/ice/renderer/widget/mod.rs
@@ -1,6 +1,7 @@
 mod aspect_ratio_container;
 mod background_container;
 mod button;
+mod checkbox;
 mod column;
 mod compound_graphic;
 mod container;