Merge pull request #11 from hangleang/number-inputs

Add ``NumberInput`` widget

Author: Kaiden42

Cargo.toml

@@ -26,6 +26,7 @@ modal = []
 tab_bar = []
 tabs = ["tab_bar"]
 time_picker = ["chrono", "icon_text", "iced_graphics/canvas"]
+number_input = ["num-traits"]
 
 default = [
     "badge",
@@ -42,6 +43,7 @@ default = [
 
 [dependencies]
 iced_style = "0.3"
+num-traits = { version = "0.2.14", optional = true }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 iced_native = "0.4"
@@ -69,5 +71,6 @@ members = [
     #"examples/tabs",
     #"examples/tabs_min",
     "examples/time_picker",
-    "examples/web"
+    "examples/web",
+    "examples/number_input",
 ]

examples/number_input/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "number_input"
+version = "0.1.0"
+authors = ["leang27 <[email protected]>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+iced =  "0.3"
+iced_aw = { path = "../..", default-features = false, features = ["number_input"] }

examples/number_input/src/main.rs

@@ -0,0 +1,124 @@
+use iced::{window, Align, Container, Element, Length, Row, Sandbox, Settings, Text};
+use iced_aw::number_input::{self, NumberInput};
+
+#[derive(Default)]
+pub struct NumberInputDemo {
+    state: number_input::State,
+    value: f32,
+}
+
+#[derive(Debug, Clone)]
+pub enum Message {
+    NumInpChanged(f32),
+}
+
+fn main() -> iced::Result {
+    NumberInputDemo::run(Settings {
+        default_text_size: 14,
+        window: window::Settings {
+            size: (250, 200),
+            ..Default::default()
+        },
+        ..Settings::default()
+    })
+}
+
+impl Sandbox for NumberInputDemo {
+    type Message = Message;
+
+    fn new() -> Self {
+        Self {
+            value: 27.0,
+            ..Self::default()
+        }
+    }
+
+    fn title(&self) -> String {
+        String::from("Number Input Demo")
+    }
+
+    fn update(&mut self, message: Message) {
+        match message {
+            Message::NumInpChanged(val) => {
+                self.value = val;
+            }
+        }
+    }
+
+    fn view(&mut self) -> Element<Message> {
+        let lb_minute = Text::new("Number Input:");
+        let txt_minute =
+            NumberInput::new(&mut self.state, self.value, 255.0, Message::NumInpChanged)
+                .step(0.5)
+                .min(1.0)
+                .input_style(style::CustomTextInput)
+                .style(style::CustomNumInput);
+
+        Container::new(
+            Row::new()
+                .spacing(10)
+                .align_items(Align::Center)
+                .push(lb_minute)
+                .push(txt_minute),
+        )
+        .width(Length::Fill)
+        .height(Length::Fill)
+        .center_x()
+        .center_y()
+        .into()
+    }
+}
+
+mod style {
+    use iced::{text_input, Color};
+    use iced_aw::number_input;
+
+    const BACKGROUND: Color = Color::from_rgb(238.0 / 255.0, 238.0 / 255.0, 238.0 / 255.0);
+    const FOREGROUND: Color = Color::from_rgb(224.0 / 255.0, 224.0 / 255.0, 224.0 / 255.0);
+    const HOVERED: Color = Color::from_rgb(129.0 / 255.0, 129.0 / 255.0, 129.0 / 255.0);
+    const PRIMARY: Color = Color::from_rgb(12.0 / 255.0, 46.0 / 251.0, 179.0 / 255.0);
+
+    pub struct CustomNumInput;
+    impl number_input::StyleSheet for CustomNumInput {
+        fn active(&self) -> number_input::Style {
+            number_input::Style {
+                icon_color: PRIMARY,
+                ..number_input::Style::default()
+            }
+        }
+    }
+
+    pub struct CustomTextInput;
+    impl text_input::StyleSheet for CustomTextInput {
+        fn active(&self) -> text_input::Style {
+            text_input::Style {
+                background: BACKGROUND.into(),
+                border_color: PRIMARY,
+                border_width: 1.0,
+                border_radius: 5.5,
+                ..text_input::Style::default()
+            }
+        }
+
+        fn focused(&self) -> text_input::Style {
+            let active = self.active();
+
+            text_input::Style {
+                background: FOREGROUND.into(),
+                ..active
+            }
+        }
+
+        fn placeholder_color(&self) -> Color {
+            HOVERED
+        }
+
+        fn selection_color(&self) -> Color {
+            HOVERED
+        }
+
+        fn value_color(&self) -> Color {
+            Color::BLACK
+        }
+    }
+}

src/graphics/mod.rs

@@ -53,3 +53,8 @@ pub mod time_picker;
 #[doc(no_inline)]
 #[cfg(feature = "time_picker")]
 pub use time_picker::TimePicker;
+
+#[cfg(feature = "number_input")]
+pub mod number_input;
+#[cfg(feature = "number_input")]
+pub use number_input::NumberInput;

src/graphics/number_input.rs

@@ -0,0 +1,128 @@
+//! Display fields that can only be filled with numeric type.
+//!
+//! A [`NumberInput`] has some local [`State`].
+use crate::native::number_input::{self, ModifierState};
+use iced_graphics::backend::{self, Backend};
+use iced_graphics::{Primitive, Renderer};
+use iced_native::mouse;
+use iced_native::{Background, Color, HorizontalAlignment, Point, Rectangle, VerticalAlignment};
+
+pub use crate::native::number_input::State;
+pub use crate::style::number_input::{Style, StyleSheet};
+
+/// A field that can only be filled with numeric type.
+///
+/// This is an alias of an `iced_native` number input with an `iced_wgpu::Renderer`.
+pub type NumberInput<'a, T, Message, Backend> =
+    number_input::NumberInput<'a, T, Message, Renderer<Backend>>;
+
+impl<B> number_input::Renderer for Renderer<B>
+where
+    B: Backend + backend::Text,
+{
+    type Style = Box<dyn StyleSheet>;
+
+    const DEFAULT_PADDING: u16 = 5;
+
+    fn draw(
+        &mut self,
+        cursor_position: Point,
+        state: &ModifierState,
+        inc_bounds: Rectangle,
+        dec_bounds: Rectangle,
+        is_mouse_over: bool,
+        is_decrease_disabled: bool,
+        is_increase_disabled: bool,
+        (content, _): Self::Output,
+        style: &<Self as number_input::Renderer>::Style,
+        font: Self::Font,
+    ) -> Self::Output {
+        let mouse_over_decrease = dec_bounds.contains(cursor_position);
+        let mouse_over_increase = inc_bounds.contains(cursor_position);
+
+        let decrease_btn_style = if is_decrease_disabled {
+            style.disabled()
+        } else if state.decrease_pressed {
+            style.pressed()
+        } else {
+            style.active()
+        };
+
+        let increase_btn_style = if is_increase_disabled {
+            style.disabled()
+        } else if state.increase_pressed {
+            style.pressed()
+        } else {
+            style.active()
+        };
+
+        // decrease button section
+        let decrease_button_rect = Primitive::Quad {
+            bounds: dec_bounds,
+            background: decrease_btn_style
+                .button_background
+                .unwrap_or(Background::Color(Color::TRANSPARENT)),
+            border_radius: 3.0,
+            border_width: 0.,
+            border_color: Color::TRANSPARENT,
+        };
+        let decrease_text = Primitive::Text {
+            content: String::from("\u{25bc}"),
+            bounds: Rectangle {
+                x: dec_bounds.center_x(),
+                y: dec_bounds.center_y(),
+                ..dec_bounds
+            },
+            font,
+            size: dec_bounds.height * 0.9,
+            color: decrease_btn_style.icon_color,
+            horizontal_alignment: HorizontalAlignment::Center,
+            vertical_alignment: VerticalAlignment::Center,
+        };
+        let decrease_btn = Primitive::Group {
+            primitives: vec![decrease_button_rect, decrease_text],
+        };
+
+        // increase button section
+        let increase_button_rect = Primitive::Quad {
+            bounds: inc_bounds,
+            background: increase_btn_style
+                .button_background
+                .unwrap_or(Background::Color(Color::TRANSPARENT)),
+            border_radius: 3.0,
+            border_width: 0.,
+            border_color: Color::TRANSPARENT,
+        };
+        let increase_text = Primitive::Text {
+            content: String::from("\u{25b2}"),
+            bounds: Rectangle {
+                x: inc_bounds.center_x(),
+                y: inc_bounds.center_y(),
+                ..inc_bounds
+            },
+            font,
+            size: inc_bounds.height * 0.9,
+            color: increase_btn_style.icon_color,
+            horizontal_alignment: HorizontalAlignment::Center,
+            vertical_alignment: VerticalAlignment::Center,
+        };
+        let increase_btn = Primitive::Group {
+            primitives: vec![increase_button_rect, increase_text],
+        };
+
+        (
+            Primitive::Group {
+                primitives: vec![content, decrease_btn, increase_btn],
+            },
+            if (mouse_over_decrease && !is_decrease_disabled)
+                || (mouse_over_increase && !is_increase_disabled)
+            {
+                mouse::Interaction::Pointer
+            } else if is_mouse_over {
+                mouse::Interaction::Text
+            } else {
+                mouse::Interaction::default()
+            },
+        )
+    }
+}

src/lib.rs

@@ -98,6 +98,10 @@ mod platform {
     #[doc(no_inline)]
     #[cfg(feature = "time_picker")]
     pub use {crate::graphics::time_picker, time_picker::TimePicker};
+
+    #[doc(no_inline)]
+    #[cfg(feature = "number_input")]
+    pub use {crate::graphics::number_input, number_input::NumberInput};
 }
 #[cfg(target_arch = "wasm32")]
 pub mod web;

src/native/mod.rs

@@ -51,3 +51,8 @@ pub use tabs::Tabs;
 pub mod time_picker;
 #[cfg(feature = "time_picker")]
 pub use time_picker::TimePicker;
+
+#[cfg(feature = "number_input")]
+pub mod number_input;
+#[cfg(feature = "number_input")]
+pub use number_input::NumberInput;