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text with doubled line height
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@raphamorim
raphamorim committed Dec 8, 2024
1 parent 0b632f8 commit 71a3677
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281 changes: 281 additions & 0 deletions examples/text_with_doubled_line_height.rs
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use raw_window_handle::{HasDisplayHandle, HasWindowHandle};
use rio_window::application::ApplicationHandler;
use rio_window::event_loop::ControlFlow;
use rio_window::event_loop::{ActiveEventLoop, DeviceEvents};
use rio_window::window::{Window, WindowId};
use rio_window::{
dpi::LogicalSize, event::WindowEvent, event_loop::EventLoop, window::WindowAttributes,
};
use std::error::Error;
use sugarloaf::{
layout::RootStyle, FragmentStyle, FragmentStyleDecoration, Object, RichText,
Sugarloaf, SugarloafWindow, SugarloafWindowSize, UnderlineInfo, UnderlineShape,
};

fn main() {
let width = 600.0;
let height = 400.0;
let window_event_loop = rio_window::event_loop::EventLoop::new().unwrap();
let mut application = Application::new(&window_event_loop, width, height);
let _ = application.run(window_event_loop);
}

struct Application {
sugarloaf: Option<Sugarloaf<'static>>,
window: Option<Window>,
height: f32,
width: f32,
}

impl Application {
fn new(event_loop: &EventLoop<()>, width: f32, height: f32) -> Self {
event_loop.listen_device_events(DeviceEvents::Never);

Application {
sugarloaf: None,
window: None,
width,
height,
}
}

fn run(&mut self, event_loop: EventLoop<()>) -> Result<(), Box<dyn Error>> {
let result = event_loop.run_app(self);
result.map_err(Into::into)
}
}

impl ApplicationHandler for Application {
fn resumed(&mut self, active_event_loop: &ActiveEventLoop) {
let window_attribute = WindowAttributes::default()
.with_title("Line height example")
.with_inner_size(LogicalSize::new(self.width, self.height))
.with_resizable(true);
let window = active_event_loop.create_window(window_attribute).unwrap();

let scale_factor = window.scale_factor();
let font_size = 24.;

let line_height = 2.0;
let sugarloaf_layout = RootStyle::new(scale_factor as f32, font_size, line_height);

let size = window.inner_size();
let sugarloaf_window = SugarloafWindow {
handle: window.window_handle().unwrap().into(),
display: window.display_handle().unwrap().into(),
scale: scale_factor as f32,
size: SugarloafWindowSize {
width: size.width as f32,
height: size.height as f32,
},
};

let mut sugarloaf = Sugarloaf::new(
sugarloaf_window,
sugarloaf::SugarloafRenderer::default(),
&sugarloaf::font::FontLibrary::default(),
sugarloaf_layout,
)
.expect("Sugarloaf instance should be created");

sugarloaf.set_background_color(Some(wgpu::Color::RED));
sugarloaf.create_rich_text();
window.request_redraw();

self.sugarloaf = Some(sugarloaf);
self.window = Some(window);
}

fn window_event(
&mut self,
event_loop: &ActiveEventLoop,
_window_id: WindowId,
event: WindowEvent,
) {
if self.sugarloaf.is_none() || self.window.is_none() {
return;
}

let sugarloaf = self.sugarloaf.as_mut().unwrap();
let window = self.window.as_mut().unwrap();

match event {
WindowEvent::CloseRequested => event_loop.exit(),
WindowEvent::ScaleFactorChanged {
// mut inner_size_writer,
scale_factor,
..
} => {
let scale_factor_f32 = scale_factor as f32;
let new_inner_size = window.inner_size();
sugarloaf.rescale(scale_factor_f32);
sugarloaf.resize(new_inner_size.width, new_inner_size.height);
window.request_redraw();
}
WindowEvent::Resized(new_size) => {
sugarloaf.resize(new_size.width, new_size.height);
window.request_redraw();
}
WindowEvent::RedrawRequested { .. } => {
let content = sugarloaf.content();
content.sel(0).clear();
content
.new_line()
.add_text(
"Sugarloaf",
FragmentStyle {
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.new_line()
.add_text(
"│㏑¼",
FragmentStyle {
color: [0.0, 0.0, 0.0, 1.0],
background_color: Some([1.0, 1.0, 1.0, 1.0]),
width: 2.0,
..FragmentStyle::default()
},
)
.add_text(
"🥶",
FragmentStyle {
color: [1.0, 0.0, 1.0, 1.0],
background_color: Some([0.3, 0.5, 1.0, 1.0]),
width: 2.0,
..FragmentStyle::default()
},
)
.new_line()
.add_text(
"│regular -> ",
FragmentStyle {
decoration: Some(FragmentStyleDecoration::Underline(
UnderlineInfo {
offset: -2.0,
size: 1.0,
is_doubled: false,
shape: UnderlineShape::Regular,
},
)),
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.add_text(
" ",
FragmentStyle {
decoration: None,
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.add_text(
"|still|",
FragmentStyle {
decoration: Some(FragmentStyleDecoration::Underline(
UnderlineInfo {
offset: -2.0,
size: 1.0,
is_doubled: false,
shape: UnderlineShape::Regular,
},
)),
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.add_text(
" ",
FragmentStyle {
decoration: None,
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.add_text(
"│curly",
FragmentStyle {
decoration: Some(FragmentStyleDecoration::Underline(
UnderlineInfo {
offset: -2.0,
size: 1.0,
is_doubled: false,
shape: UnderlineShape::Curly,
},
)),
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.new_line()
.add_text(
"│dashed",
FragmentStyle {
decoration: Some(FragmentStyleDecoration::Underline(
UnderlineInfo {
offset: -2.0,
size: 1.0,
is_doubled: false,
shape: UnderlineShape::Dashed,
},
)),
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.add_text(
" ",
FragmentStyle {
decoration: None,
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.add_text(
"dotted",
FragmentStyle {
decoration: Some(FragmentStyleDecoration::Underline(
UnderlineInfo {
offset: -2.0,
size: 1.0,
is_doubled: false,
shape: UnderlineShape::Dotted,
},
)),
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.0, 0.0, 0.0, 1.0]),
..FragmentStyle::default()
},
)
.new_line()
.add_text(
"│ \u{E0B6}Hello There!\u{e0b4}",
FragmentStyle {
color: [1.0, 1.0, 1.0, 1.0],
background_color: Some([0.5, 0.5, 1.0, 1.0]),
..FragmentStyle::default()
},
)
.build();

sugarloaf.set_objects(vec![Object::RichText(RichText {
id: 0,
position: [10., 0.],
})]);
sugarloaf.render();
event_loop.set_control_flow(ControlFlow::Wait);
}
_ => (),
}
}
}

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