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|
use crate::{Primitive, Renderer};
use iced_native::{
text::HorizontalAlignment, text::VerticalAlignment, text_input, Background,
Color, MouseCursor, Point, Rectangle, TextInput, Vector,
};
use std::f32;
impl text_input::Renderer for Renderer {
fn default_size(&self) -> u16 {
// TODO: Make this configurable
20
}
fn draw<Message>(
&mut self,
text_input: &TextInput<Message>,
bounds: Rectangle,
text_bounds: Rectangle,
cursor_position: Point,
) -> Self::Output {
let is_mouse_over = bounds.contains(cursor_position);
let border = Primitive::Quad {
bounds,
background: Background::Color(
if is_mouse_over || text_input.state.is_focused {
[0.5, 0.5, 0.5]
} else {
[0.7, 0.7, 0.7]
}
.into(),
),
border_radius: 5,
};
let input = Primitive::Quad {
bounds: Rectangle {
x: bounds.x + 1.0,
y: bounds.y + 1.0,
width: bounds.width - 2.0,
height: bounds.height - 2.0,
},
background: Background::Color(Color::WHITE),
border_radius: 5,
};
let size = f32::from(text_input.size.unwrap_or(self.default_size()));
let text = text_input.value.to_string();
let value = Primitive::Text {
content: if text.is_empty() {
text_input.placeholder.clone()
} else {
text.clone()
},
color: if text.is_empty() {
[0.7, 0.7, 0.7]
} else {
[0.3, 0.3, 0.3]
}
.into(),
bounds: Rectangle {
width: f32::INFINITY,
..text_bounds
},
size,
horizontal_alignment: HorizontalAlignment::Left,
vertical_alignment: VerticalAlignment::Center,
};
let (contents_primitive, offset) = if text_input.state.is_focused {
use wgpu_glyph::{GlyphCruncher, Scale, Section};
let text_before_cursor = &text_input
.value
.until(text_input.state.cursor_position(&text_input.value))
.to_string();
let mut text_value_width = self
.glyph_brush
.borrow_mut()
.glyph_bounds(Section {
text: text_before_cursor,
bounds: (f32::INFINITY, text_bounds.height),
scale: Scale { x: size, y: size },
..Default::default()
})
.map(|bounds| bounds.width().round())
.unwrap_or(0.0);
let spaces_at_the_end =
text_before_cursor.len() - text_before_cursor.trim_end().len();
if spaces_at_the_end > 0 {
let space_width = {
let glyph_brush = self.glyph_brush.borrow();
// TODO: Select appropriate font
let font = &glyph_brush.fonts()[0];
font.glyph(' ')
.scaled(Scale { x: size, y: size })
.h_metrics()
.advance_width
};
text_value_width += spaces_at_the_end as f32 * space_width;
}
let cursor = Primitive::Quad {
bounds: Rectangle {
x: text_bounds.x + text_value_width,
y: text_bounds.y,
width: 1.0,
height: text_bounds.height,
},
background: Background::Color(Color::BLACK),
border_radius: 0,
};
(
Primitive::Group {
primitives: vec![value, cursor],
},
Vector::new(
((text_value_width + 5.0) - text_bounds.width).max(0.0)
as u32,
0,
),
)
} else {
(value, Vector::new(0, 0))
};
let contents = Primitive::Clip {
bounds: text_bounds,
offset,
content: Box::new(contents_primitive),
};
(
Primitive::Group {
primitives: vec![border, input, contents],
},
if is_mouse_over {
MouseCursor::Text
} else {
MouseCursor::OutOfBounds
},
)
}
}
|
