Make `tour` a simple example instead of a crate

1 files changed, 0 insertions, 587 deletions

diff --git a/examples/tour/src/main.rs b/examples/tour/src/main.rs
deleted file mode 100644
index 0b88ccd5..00000000
--- a/examples/tour/src/main.rs
+++ /dev/null
@@ -1,587 +0,0 @@
-use iced::{
-    button, slider, text::HorizontalAlignment, Align, Button, Checkbox, Color,
-    Column, Element, Image, Justify, Length, Radio, Row, Slider, Text,
-    UserInterface,
-};
-
-pub fn main() {
-    let tour = Tour::new();
-
-    tour.run();
-}
-
-pub struct Tour {
-    steps: Steps,
-    back_button: button::State,
-    next_button: button::State,
-    debug: bool,
-}
-
-impl Tour {
-    pub fn new() -> Tour {
-        Tour {
-            steps: Steps::new(),
-            back_button: button::State::new(),
-            next_button: button::State::new(),
-            debug: false,
-        }
-    }
-}
-
-impl UserInterface for Tour {
-    type Message = Message;
-
-    fn update(&mut self, event: Message) {
-        match event {
-            Message::BackPressed => {
-                self.steps.go_back();
-            }
-            Message::NextPressed => {
-                self.steps.advance();
-            }
-            Message::StepMessage(step_msg) => {
-                self.steps.update(step_msg, &mut self.debug);
-            }
-        }
-    }
-
-    fn view(&mut self) -> Element<Message> {
-        let Tour {
-            steps,
-            back_button,
-            next_button,
-            ..
-        } = self;
-
-        let mut controls = Row::new();
-
-        if steps.has_previous() {
-            controls = controls.push(
-                Button::new(back_button, "Back")
-                    .on_press(Message::BackPressed)
-                    .class(button::Class::Secondary),
-            );
-        }
-
-        controls = controls.push(Column::new());
-
-        if steps.can_continue() {
-            controls = controls.push(
-                Button::new(next_button, "Next").on_press(Message::NextPressed),
-            );
-        }
-
-        let element: Element<_> = Column::new()
-            .max_width(Length::Units(500))
-            .spacing(20)
-            .padding(20)
-            .push(steps.view(self.debug).map(Message::StepMessage))
-            .push(controls)
-            .into();
-
-        let element = if self.debug {
-            element.explain(Color::BLACK)
-        } else {
-            element
-        };
-
-        Column::new()
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .align_items(Align::Center)
-            .justify_content(Justify::Center)
-            .push(element)
-            .into()
-    }
-}
-
-#[derive(Debug, Clone, Copy)]
-pub enum Message {
-    BackPressed,
-    NextPressed,
-    StepMessage(StepMessage),
-}
-
-struct Steps {
-    steps: Vec<Step>,
-    current: usize,
-}
-
-impl Steps {
-    fn new() -> Steps {
-        Steps {
-            steps: vec![
-                Step::Welcome,
-                Step::Slider {
-                    state: slider::State::new(),
-                    value: 50,
-                },
-                Step::RowsAndColumns {
-                    layout: Layout::Row,
-                    spacing_slider: slider::State::new(),
-                    spacing: 20,
-                },
-                Step::Text {
-                    size_slider: slider::State::new(),
-                    size: 30,
-                    color_sliders: [slider::State::new(); 3],
-                    color: Color::BLACK,
-                },
-                Step::Radio { selection: None },
-                Step::Image {
-                    width: 300,
-                    slider: slider::State::new(),
-                },
-                Step::Debugger,
-                Step::End,
-            ],
-            current: 0,
-        }
-    }
-
-    fn update(&mut self, msg: StepMessage, debug: &mut bool) {
-        self.steps[self.current].update(msg, debug);
-    }
-
-    fn view(&mut self, debug: bool) -> Element<StepMessage> {
-        self.steps[self.current].view(debug)
-    }
-
-    fn advance(&mut self) {
-        if self.can_continue() {
-            self.current += 1;
-        }
-    }
-
-    fn go_back(&mut self) {
-        if self.has_previous() {
-            self.current -= 1;
-        }
-    }
-
-    fn has_previous(&self) -> bool {
-        self.current > 0
-    }
-
-    fn can_continue(&self) -> bool {
-        self.current + 1 < self.steps.len()
-            && self.steps[self.current].can_continue()
-    }
-}
-
-enum Step {
-    Welcome,
-    Slider {
-        state: slider::State,
-        value: u16,
-    },
-    RowsAndColumns {
-        layout: Layout,
-        spacing_slider: slider::State,
-        spacing: u16,
-    },
-    Text {
-        size_slider: slider::State,
-        size: u16,
-        color_sliders: [slider::State; 3],
-        color: Color,
-    },
-    Radio {
-        selection: Option<Language>,
-    },
-    Image {
-        width: u16,
-        slider: slider::State,
-    },
-    Debugger,
-    End,
-}
-
-#[derive(Debug, Clone, Copy)]
-pub enum StepMessage {
-    SliderChanged(f32),
-    LayoutChanged(Layout),
-    SpacingChanged(f32),
-    TextSizeChanged(f32),
-    TextColorChanged(Color),
-    LanguageSelected(Language),
-    ImageWidthChanged(f32),
-    DebugToggled(bool),
-}
-
-impl<'a> Step {
-    fn update(&mut self, msg: StepMessage, debug: &mut bool) {
-        match msg {
-            StepMessage::DebugToggled(value) => {
-                if let Step::Debugger = self {
-                    *debug = value;
-                }
-            }
-            StepMessage::LanguageSelected(language) => {
-                if let Step::Radio { selection } = self {
-                    *selection = Some(language);
-                }
-            }
-            StepMessage::SliderChanged(new_value) => {
-                if let Step::Slider { value, .. } = self {
-                    *value = new_value.round() as u16;
-                }
-            }
-            StepMessage::TextSizeChanged(new_size) => {
-                if let Step::Text { size, .. } = self {
-                    *size = new_size.round() as u16;
-                }
-            }
-            StepMessage::TextColorChanged(new_color) => {
-                if let Step::Text { color, .. } = self {
-                    *color = new_color;
-                }
-            }
-            StepMessage::LayoutChanged(new_layout) => {
-                if let Step::RowsAndColumns { layout, .. } = self {
-                    *layout = new_layout;
-                }
-            }
-            StepMessage::SpacingChanged(new_spacing) => {
-                if let Step::RowsAndColumns { spacing, .. } = self {
-                    *spacing = new_spacing.round() as u16;
-                }
-            }
-            StepMessage::ImageWidthChanged(new_width) => {
-                if let Step::Image { width, .. } = self {
-                    *width = new_width.round() as u16;
-                }
-            }
-        };
-    }
-
-    fn can_continue(&self) -> bool {
-        match self {
-            Step::Welcome => true,
-            Step::Radio { selection } => *selection == Some(Language::Rust),
-            Step::Slider { .. } => true,
-            Step::Text { .. } => true,
-            Step::Image { .. } => true,
-            Step::RowsAndColumns { .. } => true,
-            Step::Debugger => true,
-            Step::End => false,
-        }
-    }
-
-    fn view(&mut self, debug: bool) -> Element<StepMessage> {
-        match self {
-            Step::Welcome => Self::welcome().into(),
-            Step::Radio { selection } => Self::radio(*selection).into(),
-            Step::Slider { state, value } => Self::slider(state, *value).into(),
-            Step::Text {
-                size_slider,
-                size,
-                color_sliders,
-                color,
-            } => Self::text(size_slider, *size, color_sliders, *color).into(),
-            Step::Image { width, slider } => Self::image(*width, slider).into(),
-            Step::RowsAndColumns {
-                layout,
-                spacing_slider,
-                spacing,
-            } => {
-                Self::rows_and_columns(*layout, spacing_slider, *spacing).into()
-            }
-            Step::Debugger => Self::debugger(debug).into(),
-            Step::End => Self::end().into(),
-        }
-    }
-
-    fn container(title: &str) -> Column<'a, StepMessage> {
-        Column::new()
-            .spacing(20)
-            .align_items(Align::Stretch)
-            .push(Text::new(title).size(50))
-    }
-
-    fn welcome() -> Column<'a, StepMessage> {
-        Self::container("Welcome!")
-            .push(Text::new(
-                "This a simple tour meant to showcase a bunch of widgets that \
-                 can be easily implemented on top of Iced.",
-            ))
-            .push(Text::new(
-                "Iced is a renderer-agnostic GUI library for Rust focused on \
-                 simplicity and type-safety. It is heavily inspired by Elm.",
-            ))
-            .push(Text::new(
-                "It was originally born as part of Coffee, an opinionated \
-                 2D game engine for Rust.",
-            ))
-            .push(Text::new(
-                "Iced does not provide a built-in renderer. On native \
-                 platforms, this example runs on a fairly simple renderer \
-                 built on top of ggez, another game library.",
-            ))
-            .push(Text::new(
-                "Additionally, this tour can also run on WebAssembly thanks \
-                 to dodrio, an experimental VDOM library for Rust.",
-            ))
-            .push(Text::new(
-                "You will need to interact with the UI in order to reach the \
-                 end!",
-            ))
-    }
-
-    fn slider(
-        state: &'a mut slider::State,
-        value: u16,
-    ) -> Column<'a, StepMessage> {
-        Self::container("Slider")
-            .push(Text::new(
-                "A slider allows you to smoothly select a value from a range \
-                 of values.",
-            ))
-            .push(Text::new(
-                "The following slider lets you choose an integer from \
-                 0 to 100:",
-            ))
-            .push(Slider::new(
-                state,
-                0.0..=100.0,
-                value as f32,
-                StepMessage::SliderChanged,
-            ))
-            .push(
-                Text::new(&value.to_string())
-                    .horizontal_alignment(HorizontalAlignment::Center),
-            )
-    }
-
-    fn rows_and_columns(
-        layout: Layout,
-        spacing_slider: &'a mut slider::State,
-        spacing: u16,
-    ) -> Column<'a, StepMessage> {
-        let row_radio = Radio::new(
-            Layout::Row,
-            "Row",
-            Some(layout),
-            StepMessage::LayoutChanged,
-        );
-
-        let column_radio = Radio::new(
-            Layout::Column,
-            "Column",
-            Some(layout),
-            StepMessage::LayoutChanged,
-        );
-
-        let layout_section: Element<_> = match layout {
-            Layout::Row => Row::new()
-                .spacing(spacing)
-                .push(row_radio)
-                .push(column_radio)
-                .into(),
-            Layout::Column => Column::new()
-                .spacing(spacing)
-                .push(row_radio)
-                .push(column_radio)
-                .into(),
-        };
-
-        let spacing_section = Column::new()
-            .spacing(10)
-            .push(Slider::new(
-                spacing_slider,
-                0.0..=80.0,
-                spacing as f32,
-                StepMessage::SpacingChanged,
-            ))
-            .push(
-                Text::new(&format!("{} px", spacing))
-                    .horizontal_alignment(HorizontalAlignment::Center),
-            );
-
-        Self::container("Rows and columns")
-            .spacing(spacing)
-            .push(Text::new(
-                "Iced uses a layout model based on flexbox to position UI \
-                 elements.",
-            ))
-            .push(Text::new(
-                "Rows and columns can be used to distribute content \
-                 horizontally or vertically, respectively.",
-            ))
-            .push(layout_section)
-            .push(Text::new(
-                "You can also easily change the spacing between elements:",
-            ))
-            .push(spacing_section)
-    }
-
-    fn text(
-        size_slider: &'a mut slider::State,
-        size: u16,
-        color_sliders: &'a mut [slider::State; 3],
-        color: Color,
-    ) -> Column<'a, StepMessage> {
-        let size_section = Column::new()
-            .padding(20)
-            .spacing(20)
-            .push(Text::new("You can change its size:"))
-            .push(
-                Text::new(&format!("This text is {} pixels", size)).size(size),
-            )
-            .push(Slider::new(
-                size_slider,
-                10.0..=70.0,
-                size as f32,
-                StepMessage::TextSizeChanged,
-            ));
-
-        let [red, green, blue] = color_sliders;
-        let color_section = Column::new()
-            .padding(20)
-            .spacing(20)
-            .push(Text::new("And its color:"))
-            .push(Text::new(&format!("{:?}", color)).color(color))
-            .push(
-                Row::new()
-                    .spacing(10)
-                    .push(Slider::new(red, 0.0..=1.0, color.r, move |r| {
-                        StepMessage::TextColorChanged(Color { r, ..color })
-                    }))
-                    .push(Slider::new(green, 0.0..=1.0, color.g, move |g| {
-                        StepMessage::TextColorChanged(Color { g, ..color })
-                    }))
-                    .push(Slider::new(blue, 0.0..=1.0, color.b, move |b| {
-                        StepMessage::TextColorChanged(Color { b, ..color })
-                    })),
-            );
-
-        Self::container("Text")
-            .push(Text::new(
-                "Text is probably the most essential widget for your UI. \
-                 It will try to adapt to the dimensions of its container.",
-            ))
-            .push(size_section)
-            .push(color_section)
-    }
-
-    fn radio(selection: Option<Language>) -> Column<'a, StepMessage> {
-        let question = Column::new()
-            .padding(20)
-            .spacing(10)
-            .push(Text::new("Iced is written in...").size(24))
-            .push(Language::all().iter().cloned().fold(
-                Column::new().padding(10).spacing(20),
-                |choices, language| {
-                    choices.push(Radio::new(
-                        language,
-                        language.into(),
-                        selection,
-                        StepMessage::LanguageSelected,
-                    ))
-                },
-            ));
-
-        Self::container("Radio button")
-            .push(Text::new(
-                "A radio button is normally used to represent a choice... \
-                 Surprise test!",
-            ))
-            .push(question)
-            .push(Text::new(
-                "Iced works very well with iterators! The list above is \
-                 basically created by folding a column over the different \
-                 choices, creating a radio button for each one of them!",
-            ))
-    }
-
-    fn image(
-        width: u16,
-        slider: &'a mut slider::State,
-    ) -> Column<'a, StepMessage> {
-        Self::container("Image")
-            .push(Text::new("An image that tries to keep its aspect ratio."))
-            .push(
-                Image::new("resources/ferris.png")
-                    .width(Length::Units(width))
-                    .align_self(Align::Center),
-            )
-            .push(Slider::new(
-                slider,
-                100.0..=500.0,
-                width as f32,
-                StepMessage::ImageWidthChanged,
-            ))
-            .push(
-                Text::new(&format!("Width: {} px", width.to_string()))
-                    .horizontal_alignment(HorizontalAlignment::Center),
-            )
-    }
-
-    fn debugger(debug: bool) -> Column<'a, StepMessage> {
-        Self::container("Debugger")
-            .push(Text::new(
-                "You can ask Iced to visually explain the layouting of the \
-                 different elements comprising your UI!",
-            ))
-            .push(Text::new(
-                "Give it a shot! Check the following checkbox to be able to \
-                 see element boundaries.",
-            ))
-            .push(Checkbox::new(
-                debug,
-                "Explain layout",
-                StepMessage::DebugToggled,
-            ))
-            .push(Text::new("Feel free to go back and take a look."))
-    }
-
-    fn end() -> Column<'a, StepMessage> {
-        Self::container("You reached the end!")
-            .push(Text::new(
-                "This tour will be updated as more features are added.",
-            ))
-            .push(Text::new("Make sure to keep an eye on it!"))
-    }
-}
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Language {
-    Rust,
-    Elm,
-    Ruby,
-    Haskell,
-    C,
-    Other,
-}
-
-impl Language {
-    fn all() -> [Language; 6] {
-        [
-            Language::C,
-            Language::Elm,
-            Language::Ruby,
-            Language::Haskell,
-            Language::Rust,
-            Language::Other,
-        ]
-    }
-}
-
-impl From<Language> for &str {
-    fn from(language: Language) -> &'static str {
-        match language {
-            Language::Rust => "Rust",
-            Language::Elm => "Elm",
-            Language::Ruby => "Ruby",
-            Language::Haskell => "Haskell",
-            Language::C => "C",
-            Language::Other => "Other",
-        }
-    }
-}
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Layout {
-    Row,
-    Column,
-}