/
main.rs
408 lines (363 loc) · 15.2 KB
/
main.rs
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//! Qglif - A cross-platform .glif renderer and editor.
//! Main author is Fredrick Brennan (@ctrlcctrlv); see AUTHORS.
//! (c) 2020. Apache 2.0 licensed.
#![feature(
assoc_char_funcs,
panic_info_message,
stmt_expr_attributes,
cell_leak,
or_patterns
)]
// Cargo.toml comments say what crates are used for what.
#[macro_use]
extern crate lazy_static;
extern crate enum_iterator;
#[macro_use]
extern crate glium;
extern crate clap;
extern crate gl;
extern crate xmltree;
#[macro_use]
extern crate git_version; // for util::parse_args
extern crate nsvg;
extern crate reclutch;
use glium::glutin;
use glium::{GlObject, Surface};
use glutin::dpi::PhysicalPosition;
use glutin::event::{ElementState, Event, KeyboardInput, MouseButton, VirtualKeyCode, WindowEvent};
use glutin::event_loop::{ControlFlow, EventLoop};
use reclutch::display::GraphicsDisplay;
use reclutch::skia::{Contains, Point, Rect};
use enum_iterator::IntoEnumIterator;
use std::time::Instant;
#[macro_use]
extern crate imgui; // for the macros, can't use one in imgui_glium_renderer
#[macro_use]
extern crate imgui_glium_renderer;
extern crate imgui_winit_support;
use imgui::Context as ImguiContext;
use imgui_glium_renderer::Renderer as ImguiRenderer;
use imgui_winit_support::{HiDpiMode, WinitPlatform};
#[macro_use]
mod util;
// Provides a thread-local global `state` variable
mod state;
use state::{state, Glyph, PointLabels};
mod events;
mod glifparser;
mod opengl;
mod renderer;
use renderer::constants::*;
use std::fs;
fn main() {
util::set_panic_hook();
let window_size = (WIDTH, HEIGHT);
state.with(|v| {
v.borrow_mut().winsize = window_size.into();
});
let args = util::argparser::parse_args();
let filename = args.filename;
let glif =
glifparser::read_ufo_glif(&fs::read_to_string(&filename).expect("Failed to read file"));
state.with(|v| {
v.borrow_mut().glyph = Some(Glyph {
glif,
filename: filename.clone(),
})
});
state.with(|v| {
v.borrow().glyph.as_ref().map(|glyph| {
let glif = &glyph.glif;
debug!(
"Loaded {:?} (U+{:04x}) from {}",
glif.name,
glif.unicode,
state.with(|v| v
.borrow()
.glyph
.as_ref()
.expect("Glyph NULL!?")
.filename
.clone())
);
});
});
let event_loop = EventLoop::new();
let wb = glutin::window::WindowBuilder::new()
.with_title(format!("Qglif: {}", filename))
.with_inner_size(glutin::dpi::PhysicalSize::new(
window_size.0 as f64,
window_size.1 as f64,
))
.with_resizable(true);
let cb = glutin::ContextBuilder::new()
.with_vsync(true)
.with_srgb(true);
let gl_display = glium::Display::new(wb, cb, &event_loop).unwrap();
let quad_vertex_buffer = opengl::quad_vertex_buffer(&gl_display);
let quad_indices = opengl::quad_indices(&gl_display);
let quad_program = opengl::quad_program(&gl_display);
let mut out_texture = opengl::create_texture(&gl_display, window_size);
let mut out_texture_depth =
glium::texture::DepthTexture2d::empty(&gl_display, window_size.0, window_size.1).unwrap();
let mut skia_context = Some(unsafe {
glutin::ContextBuilder::new()
.with_gl(glutin::GlRequest::Specific(glutin::Api::OpenGl, (3, 3)))
.with_shared_lists(&gl_display.gl_window())
.with_srgb(true)
.build_headless(
&event_loop,
glutin::dpi::PhysicalSize::new(window_size.0 as _, window_size.1 as _),
)
.unwrap()
.make_current()
.unwrap()
});
let mut display = opengl::skia::make_skia_display(&out_texture, window_size);
let mut last_frame = Instant::now();
let mut imgui = ImguiContext::create();
let mut platform = WinitPlatform::init(&mut imgui);
platform.attach_window(
imgui.io_mut(),
&gl_display.gl_window().window(),
HiDpiMode::Default,
);
debug!("DPI is {}", gl_display.gl_window().window().scale_factor());
imgui.set_ini_filename(None);
state.with(|v| {
v.borrow_mut().dpi = gl_display.gl_window().window().scale_factor();
});
opengl::imgui::set_imgui_fonts(&mut imgui);
opengl::imgui::set_imgui_dpi(&mut imgui, window_size);
let mut renderer =
ImguiRenderer::init(&mut imgui, &gl_display).expect("Failed to initialize renderer");
state.with(|v| {
let icons = state::Icons::from_display(&gl_display, &mut renderer);
v.borrow_mut().icons = Some(icons);
});
let mut should_redraw_skia = true;
let mut frame = 0;
let mut was_resized = false;
event_loop.run(move |event, _, control_flow| {
*control_flow = ControlFlow::Wait;
platform.handle_event(imgui.io_mut(), &gl_display.gl_window().window(), &event);
// These handle the Skia events. ImGui "events" don't really exist, see
// src/opengl/imgui.rs:fn build_imgui_ui.
#[allow(deprecated)]
match event {
Event::LoopDestroyed => {}
Event::WindowEvent { event, .. } => match event {
WindowEvent::Resized(physical_size) => {
out_texture = opengl::create_texture(
&gl_display,
(physical_size.width, physical_size.height),
);
out_texture_depth = glium::texture::DepthTexture2d::empty(
&gl_display,
physical_size.width,
physical_size.height,
)
.unwrap();
gl_display.gl_window().resize(physical_size);
opengl::imgui::set_imgui_dpi(
&mut imgui,
(physical_size.width, physical_size.height),
);
skia_context =
Some(unsafe { skia_context.take().unwrap().make_current().unwrap() });
display = opengl::skia::make_skia_display(
&out_texture,
(physical_size.width, physical_size.height),
);
should_redraw_skia = true;
state.with(|v| {
v.borrow_mut().winsize = physical_size;
display.perform_draw_closure(|canvas, _| {
events::update_viewport(None, None, &v, canvas)
});
});
was_resized = true;
}
WindowEvent::KeyboardInput {
input:
KeyboardInput {
virtual_keycode: Some(VirtualKeyCode::Escape | VirtualKeyCode::Q),
..
},
..
}
| WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
WindowEvent::KeyboardInput {
input:
KeyboardInput {
virtual_keycode,
modifiers,
state: kstate,
..
},
..
} => {
if kstate != ElementState::Pressed {
return;
}
state.with(|v| {
let mut scale = v.borrow().factor;
let mut offset = v.borrow().offset;
match virtual_keycode {
// Scales
Some(VirtualKeyCode::Key1) => scale = 1.,
Some(VirtualKeyCode::Equals) => {
scale = events::zoom_in_factor(scale, &v);
}
Some(VirtualKeyCode::Minus) => {
scale = events::zoom_out_factor(scale, &v);
}
// Translations
Some(VirtualKeyCode::Up) => {
offset.1 += OFFSET_FACTOR;
}
Some(VirtualKeyCode::Down) => {
offset.1 += -OFFSET_FACTOR;
}
Some(VirtualKeyCode::Left) => {
offset.0 += OFFSET_FACTOR;
}
Some(VirtualKeyCode::Right) => {
offset.0 += -OFFSET_FACTOR;
}
// Modes
Some(VirtualKeyCode::V) => {
v.borrow_mut().mode = state::Mode::Select;
}
Some(VirtualKeyCode::A) => {
v.borrow_mut().mode = state::Mode::Pan;
}
Some(VirtualKeyCode::Z) => {
v.borrow_mut().mode = state::Mode::Zoom;
}
// Toggles
Some(VirtualKeyCode::Key3) => {
let point_labels = v.borrow().point_labels;
if modifiers.shift() {
let mut e = PointLabels::into_enum_iter().cycle().skip(1+point_labels as usize);
let pl = e.next().unwrap();
v.borrow_mut().point_labels = pl;
}
}
_ => {},
}
display.perform_draw_closure(|canvas, _| {
events::update_viewport(Some(offset), Some(scale), &v, canvas)
});
should_redraw_skia = true;
debug!("Scale factor now {}; offset {:?}; mode {:?}", v.borrow().factor, v.borrow().offset, v.borrow().mode);
});
}
WindowEvent::CursorMoved { position, .. } => {
display.perform_draw_closure(|canvas, _| {
state.with(|v| {
let mode = v.borrow().mode;
should_redraw_skia = match mode {
#[rustfmt::skip]
state::Mode::Select => events::mouse_moved_select(position, &v, canvas),
state::Mode::Pan => events::mouse_moved_move(position, &v, canvas),
state::Mode::Zoom => events::mouse_moved_zoom(position, &v, canvas),
};
});
});
}
WindowEvent::MouseInput {
state: mstate,
button,
..
} => {
state.with(|v| {
// Ignore events if we are clicking on Dear ImGui toolbox.
let toolbox_rect = opengl::imgui::toolbox_rect();
let absolute_position = v.borrow().absolute_mousepos;
if toolbox_rect.contains(Point::from((absolute_position.x as f32, absolute_position.y as f32))) {
return
}
display.perform_draw_closure(|canvas, _| {
let mode = v.borrow().mode;
let position = v.borrow().mousepos;
v.borrow_mut().mousedown = mstate == ElementState::Pressed;
should_redraw_skia = match mode {
state::Mode::Select => {
events::mouse_button_select(position, &v, canvas, button)
}
_ => false,
};
match mstate {
ElementState::Pressed => {
should_redraw_skia = match mode {
state::Mode::Select => events::mouse_pressed_select(
position, &v, canvas, button,
),
_ => false,
};
}
ElementState::Released => {
should_redraw_skia = match mode {
state::Mode::Select => events::mouse_released_select(
position, &v, canvas, button,
),
state::Mode::Zoom => events::mouse_released_zoom(
position, &v, canvas, button,
),
_ => false,
};
}
}
});
});
}
_ => (),
},
Event::RedrawRequested { .. } => {
let mut out_texture_fb = glium::framebuffer::SimpleFrameBuffer::with_depth_buffer(
&gl_display,
&out_texture,
&out_texture_depth,
)
.unwrap();
let target = &mut out_texture_fb;
skia_context =
Some(unsafe { skia_context.take().unwrap().make_current().unwrap() });
if !should_redraw_skia && was_resized {
should_redraw_skia = true;
was_resized = false;
}
// Yes, 10 is a magic number. 👻
if frame < 10 || should_redraw_skia {
display.perform_draw_closure(|canvas, _| {
opengl::skia::redraw_skia(canvas, &mut should_redraw_skia);
});
}
display.present(None).unwrap();
opengl::imgui::render_imgui_frame(
target,
&mut imgui,
&mut last_frame,
&mut renderer,
);
let mut frame_target = gl_display.draw();
frame_target
.draw(
&quad_vertex_buffer,
&quad_indices,
&quad_program,
&uniform! { tex: &out_texture },
&Default::default(),
)
.unwrap();
frame_target.finish().unwrap();
}
Event::MainEventsCleared => {
gl_display.gl_window().window().request_redraw();
}
_ => return,
}
frame += 1;
});
}