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//! Example demonstrating text transform support.
//!
//! This example shows text following parent container transforms:
//! - Text with rotation
//! - Text with scale
//! - Text with translation
//! - Combined transformations (rotation + scale + translation)
//! - Custom transform origin
//! - Nested transforms with text
//! - Animated text rotation
use guido::prelude::*;
use std::f32::consts::PI;
use std::time::Duration;
#[tokio::main]
async fn main() {
App::new().run(|app| {
// Animated rotation angle
let angle = create_signal(0.0_f32);
// Animation service - updates the angle signal continuously
let start_time = std::time::Instant::now();
let angle_w = angle.writer();
create_task(move |ctx| async move {
while ctx.is_running() {
let elapsed = start_time.elapsed().as_secs_f32();
let new_angle = (elapsed * PI / 2.0).to_degrees() % 360.0;
angle_w.set(new_angle);
tokio::time::sleep(Duration::from_millis(16)).await;
}
});
let view = container()
.layout(Flex::column().spacing(20.0).center())
.padding(30.0)
.children([
// Title
container().child(
text("Text Transform Demo")
.font_size(24.0)
.color(Color::WHITE),
),
// Row 1: Basic transforms (rotation, scale, translation)
container()
.layout(Flex::row().spacing(30.0).center())
.children([
// Rotation
container()
.width(110.0)
.height(70.0)
.background(Color::rgba(0.3, 0.5, 0.8, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.rotate(15.0)
.child(text("Rotate 15°").font_size(13.0).color(Color::WHITE)),
// Scale
container()
.width(110.0)
.height(70.0)
.background(Color::rgba(0.8, 0.5, 0.3, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.scale(1.2)
.child(text("Scale 1.2x").font_size(13.0).color(Color::WHITE)),
// Translation
container()
.width(110.0)
.height(70.0)
.background(Color::rgba(0.5, 0.8, 0.3, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.translate((10.0, -10.0))
.child(text("Translate").font_size(13.0).color(Color::WHITE)),
// Rotation + Scale
container()
.width(110.0)
.height(70.0)
.background(Color::rgba(0.8, 0.3, 0.8, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.rotate(-20.0)
.scale(0.9)
.child(text("Rot + Scale").font_size(13.0).color(Color::WHITE)),
]),
// Row 2: Combined transforms and custom origin
container()
.layout(Flex::row().spacing(30.0).center())
.children([
// All three: rotation + scale + translation
container()
.width(130.0)
.height(80.0)
.background(Color::rgba(0.3, 0.7, 0.7, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.translate((5.0, 5.0))
.rotate(10.0)
.scale(1.1)
.child(text("All Combined").font_size(13.0).color(Color::WHITE)),
// Custom origin: top-left
container()
.width(130.0)
.height(80.0)
.background(Color::rgba(0.7, 0.5, 0.2, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.pivot(Pivot::TOP_LEFT)
.rotate(15.0)
.child(text("Origin: Top-Left").font_size(12.0).color(Color::WHITE)),
// Custom origin: bottom-right
container()
.width(130.0)
.height(80.0)
.background(Color::rgba(0.2, 0.5, 0.7, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.pivot(Pivot::BOTTOM_RIGHT)
.rotate(15.0)
.child(
text("Origin: Bot-Right")
.font_size(12.0)
.color(Color::WHITE),
),
// Custom origin with scale
container()
.width(130.0)
.height(80.0)
.background(Color::rgba(0.7, 0.3, 0.5, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.pivot(Pivot::TOP_RIGHT)
.scale(1.15)
.rotate(-10.0)
.child(text("Origin + Scale").font_size(12.0).color(Color::WHITE)),
]),
// Row 3: Nested transforms
container()
.layout(Flex::row().spacing(30.0).center())
.children([
// Nested: parent rotated, child has text
container()
.width(130.0)
.height(90.0)
.background(Color::rgba(0.6, 0.3, 0.6, 0.5))
.corners(12.0)
.layout(Flex::column().center())
.rotate(20.0)
.child(
container()
.width(90.0)
.height(50.0)
.background(Color::rgba(0.8, 0.6, 0.8, 0.9))
.corners(6.0)
.layout(Flex::column().center())
.child(text("Nested").font_size(14.0).color(Color::WHITE)),
),
// Double nested with additional rotation
container()
.width(130.0)
.height(90.0)
.background(Color::rgba(0.3, 0.6, 0.6, 0.5))
.corners(12.0)
.layout(Flex::column().center())
.rotate(15.0)
.child(
container()
.width(90.0)
.height(50.0)
.background(Color::rgba(0.5, 0.8, 0.8, 0.9))
.corners(6.0)
.layout(Flex::column().center())
.rotate(15.0)
.child(
text("30° Total")
.font_size(13.0)
.color(Color::rgb(0.1, 0.1, 0.1)),
),
),
// Nested with scale + translation
container()
.width(130.0)
.height(90.0)
.background(Color::rgba(0.6, 0.6, 0.3, 0.5))
.corners(12.0)
.layout(Flex::column().center())
.scale(1.1)
.translate((5.0, 0.0))
.child(
container()
.width(90.0)
.height(50.0)
.background(Color::rgba(0.8, 0.8, 0.5, 0.9))
.corners(6.0)
.layout(Flex::column().center())
.rotate(-10.0)
.child(
text("Scale+Trans")
.font_size(12.0)
.color(Color::rgb(0.1, 0.1, 0.1)),
),
),
// Animated rotating text
container()
.width(110.0)
.height(70.0)
.background(Color::rgba(0.8, 0.3, 0.5, 0.8))
.corners(8.0)
.layout(Flex::column().center())
.rotate(move || angle.get())
.child(text("Spinning!").font_size(14.0).color(Color::WHITE)),
]),
]);
app.add_surface(
SurfaceConfig::new()
.width(900)
.height(450)
.anchor(Anchor::TOP | Anchor::LEFT)
.background_color(Color::rgb(0.1, 0.1, 0.15)),
move || view,
);
});
}