diff options
Diffstat (limited to 'pure/src/widget/button.rs')
| -rw-r--r-- | pure/src/widget/button.rs | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/pure/src/widget/button.rs b/pure/src/widget/button.rs deleted file mode 100644 index eb174e57..00000000 --- a/pure/src/widget/button.rs +++ /dev/null @@ -1,274 +0,0 @@ -//! Allow your users to perform actions by pressing a button. -use crate::overlay; -use crate::widget::tree::{self, Tree}; -use crate::{Element, Widget}; - -use iced_native::event::{self, Event}; -use iced_native::layout; -use iced_native::mouse; -use iced_native::renderer; -use iced_native::widget::button; -use iced_native::{ - Clipboard, Layout, Length, Padding, Point, Rectangle, Shell, -}; - -pub use iced_style::button::{Appearance, StyleSheet}; - -use button::State; - -/// A generic widget that produces a message when pressed. -/// -/// ``` -/// # type Button<'a, Message> = -/// # iced_pure::widget::Button<'a, Message, iced_native::renderer::Null>; -/// # -/// #[derive(Clone)] -/// enum Message { -/// ButtonPressed, -/// } -/// -/// let button = Button::new("Press me!").on_press(Message::ButtonPressed); -/// ``` -/// -/// If a [`Button::on_press`] handler is not set, the resulting [`Button`] will -/// be disabled: -/// -/// ``` -/// # type Button<'a, Message> = -/// # iced_pure::widget::Button<'a, Message, iced_native::renderer::Null>; -/// # -/// #[derive(Clone)] -/// enum Message { -/// ButtonPressed, -/// } -/// -/// fn disabled_button<'a>() -> Button<'a, Message> { -/// Button::new("I'm disabled!") -/// } -/// -/// fn enabled_button<'a>() -> Button<'a, Message> { -/// disabled_button().on_press(Message::ButtonPressed) -/// } -/// ``` -pub struct Button<'a, Message, Renderer> -where - Renderer: iced_native::Renderer, - Renderer::Theme: StyleSheet, -{ - content: Element<'a, Message, Renderer>, - on_press: Option<Message>, - width: Length, - height: Length, - padding: Padding, - style: <Renderer::Theme as StyleSheet>::Style, -} - -impl<'a, Message, Renderer> Button<'a, Message, Renderer> -where - Renderer: iced_native::Renderer, - Renderer::Theme: StyleSheet, -{ - /// Creates a new [`Button`] with the given content. - pub fn new(content: impl Into<Element<'a, Message, Renderer>>) -> Self { - Button { - content: content.into(), - on_press: None, - width: Length::Shrink, - height: Length::Shrink, - padding: Padding::new(5), - style: <Renderer::Theme as StyleSheet>::Style::default(), - } - } - - /// Sets the width of the [`Button`]. - pub fn width(mut self, width: Length) -> Self { - self.width = width; - self - } - - /// Sets the height of the [`Button`]. - pub fn height(mut self, height: Length) -> Self { - self.height = height; - self - } - - /// Sets the [`Padding`] of the [`Button`]. - pub fn padding<P: Into<Padding>>(mut self, padding: P) -> Self { - self.padding = padding.into(); - self - } - - /// Sets the message that will be produced when the [`Button`] is pressed. - /// - /// Unless `on_press` is called, the [`Button`] will be disabled. - pub fn on_press(mut self, msg: Message) -> Self { - self.on_press = Some(msg); - self - } - - /// Sets the style variant of this [`Button`]. - pub fn style( - mut self, - style: <Renderer::Theme as StyleSheet>::Style, - ) -> Self { - self.style = style; - self - } -} - -impl<'a, Message, Renderer> Widget<Message, Renderer> - for Button<'a, Message, Renderer> -where - Message: 'a + Clone, - Renderer: 'a + iced_native::Renderer, - Renderer::Theme: StyleSheet, -{ - fn tag(&self) -> tree::Tag { - tree::Tag::of::<State>() - } - - fn state(&self) -> tree::State { - tree::State::new(State::new()) - } - - fn children(&self) -> Vec<Tree> { - vec![Tree::new(&self.content)] - } - - fn diff(&self, tree: &mut Tree) { - tree.diff_children(std::slice::from_ref(&self.content)) - } - - fn width(&self) -> Length { - self.width - } - - fn height(&self) -> Length { - self.height - } - - fn layout( - &self, - renderer: &Renderer, - limits: &layout::Limits, - ) -> layout::Node { - button::layout( - renderer, - limits, - self.width, - self.height, - self.padding, - |renderer, limits| { - self.content.as_widget().layout(renderer, limits) - }, - ) - } - - fn on_event( - &mut self, - tree: &mut Tree, - event: Event, - layout: Layout<'_>, - cursor_position: Point, - renderer: &Renderer, - clipboard: &mut dyn Clipboard, - shell: &mut Shell<'_, Message>, - ) -> event::Status { - if let event::Status::Captured = self.content.as_widget_mut().on_event( - &mut tree.children[0], - event.clone(), - layout.children().next().unwrap(), - cursor_position, - renderer, - clipboard, - shell, - ) { - return event::Status::Captured; - } - - button::update( - event, - layout, - cursor_position, - shell, - &self.on_press, - || tree.state.downcast_mut::<State>(), - ) - } - - fn draw( - &self, - tree: &Tree, - renderer: &mut Renderer, - theme: &Renderer::Theme, - _style: &renderer::Style, - layout: Layout<'_>, - cursor_position: Point, - _viewport: &Rectangle, - ) { - let bounds = layout.bounds(); - let content_layout = layout.children().next().unwrap(); - - let styling = button::draw( - renderer, - bounds, - cursor_position, - self.on_press.is_some(), - theme, - self.style, - || tree.state.downcast_ref::<State>(), - ); - - self.content.as_widget().draw( - &tree.children[0], - renderer, - theme, - &renderer::Style { - text_color: styling.text_color, - }, - content_layout, - cursor_position, - &bounds, - ); - } - - fn mouse_interaction( - &self, - _tree: &Tree, - layout: Layout<'_>, - cursor_position: Point, - _viewport: &Rectangle, - _renderer: &Renderer, - ) -> mouse::Interaction { - button::mouse_interaction( - layout, - cursor_position, - self.on_press.is_some(), - ) - } - - fn overlay<'b>( - &'b self, - tree: &'b mut Tree, - layout: Layout<'_>, - renderer: &Renderer, - ) -> Option<overlay::Element<'b, Message, Renderer>> { - self.content.as_widget().overlay( - &mut tree.children[0], - layout.children().next().unwrap(), - renderer, - ) - } -} - -impl<'a, Message, Renderer> From<Button<'a, Message, Renderer>> - for Element<'a, Message, Renderer> -where - Message: Clone + 'a, - Renderer: iced_native::Renderer + 'a, - Renderer::Theme: StyleSheet, -{ - fn from(button: Button<'a, Message, Renderer>) -> Self { - Self::new(button) - } -} |