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use {
Align,
Color,
Colorable,
FontSize,
Borderable,
Positionable,
Range,
Rect,
Scalar,
Sizeable,
Widget,
};
use event;
use input;
use widget;
pub struct TextBox<'a> {
common: widget::CommonBuilder,
text: &'a str,
style: Style,
}
widget_style!{
style Style {
- text_padding: Scalar { 5.0 }
- color: Color { theme.shape_color }
- border: Scalar { theme.border_width }
- border_color: Color { theme.border_color }
- text_color: Color { theme.label_color }
- font_size: FontSize { theme.font_size_medium }
- x_align: Align { Align::Start }
}
}
widget_ids! {
struct Ids {
text_edit,
rectangle,
}
}
pub struct State {
ids: Ids,
}
impl<'a> TextBox<'a> {
pub fn new(text: &'a str) -> Self {
TextBox {
common: widget::CommonBuilder::new(),
text: text,
style: Style::new(),
}
}
pub fn align_text_left(self) -> Self {
self.x_align_text(Align::Start)
}
pub fn align_text_middle(self) -> Self {
self.x_align_text(Align::Middle)
}
pub fn align_text_right(self) -> Self {
self.x_align_text(Align::End)
}
builder_methods!{
pub text_color { style.text_color = Some(Color) }
pub font_size { style.font_size = Some(FontSize) }
pub x_align_text { style.x_align = Some(Align) }
pub pad_text { style.text_padding = Some(Scalar) }
}
}
#[derive(Clone, Debug)]
pub enum Event {
Update(String),
Enter,
}
impl<'a> Widget for TextBox<'a> {
type State = State;
type Style = Style;
type Event = Vec<Event>;
fn common(&self) -> &widget::CommonBuilder {
&self.common
}
fn common_mut(&mut self) -> &mut widget::CommonBuilder {
&mut self.common
}
fn init_state(&self, id_gen: widget::id::Generator) -> Self::State {
State {
ids: Ids::new(id_gen),
}
}
fn style(&self) -> Self::Style {
self.style.clone()
}
fn update(self, args: widget::UpdateArgs<Self>) -> Self::Event {
let widget::UpdateArgs { id, state, rect, style, mut ui, .. } = args;
let TextBox { text, .. } = self;
let font_size = style.font_size(ui.theme());
let border = style.border(ui.theme());
let text_padding = style.text_padding(ui.theme());
let x_align = style.x_align(ui.theme());
let text_rect = {
let w = rect.x.pad(border + text_padding).len();
let h = font_size as Scalar + 1.0;
let x = Range::new(0.0, w).align_middle_of(rect.x);
let y = Range::new(0.0, h).align_middle_of(rect.y);
Rect { x: x, y: y }
};
let color = style.color(ui.theme());
let border_color = style.border_color(ui.theme());
widget::BorderedRectangle::new(rect.dim())
.xy(rect.xy())
.graphics_for(id)
.parent(id)
.border(border)
.color(color)
.border_color(border_color)
.set(state.ids.rectangle, ui);
let mut events = Vec::new();
let text_color = style.text_color(ui.theme());
if let Some(new_string) = widget::TextEdit::new(text)
.wh(text_rect.dim())
.xy(text_rect.xy())
.font_size(font_size)
.color(text_color)
.x_align_text(x_align)
.parent(id)
.set(state.ids.text_edit, ui)
{
events.push(Event::Update(new_string));
}
for widget_event in ui.widget_input(state.ids.text_edit).events() {
match widget_event {
event::Widget::Press(press) => match press.button {
event::Button::Keyboard(key) => match key {
input::Key::Return => events.push(Event::Enter),
_ => (),
},
_ => (),
},
_ => (),
}
}
events
}
}
impl<'a> Borderable for TextBox<'a> {
builder_methods!{
border { style.border = Some(Scalar) }
border_color { style.border_color = Some(Color) }
}
}
impl<'a> Colorable for TextBox<'a> {
builder_method!(color { style.color = Some(Color) });
}