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327use std::path::Path;
use anyhow::Result;
use log::error;
use pixels::{Pixels, SurfaceTexture};
use winit::dpi::LogicalSize;
use winit::event::{Event, VirtualKeyCode};
use winit::event_loop::{ControlFlow, EventLoop};
use winit::window::{Fullscreen, WindowBuilder};
use winit_input_helper::WinitInputHelper;
use crate::binocle::Binocle;
use crate::gui::Gui;
use crate::options::CliOptions;
use crate::settings::{HEIGHT, WIDTH};
enum MouseDragAction {
Nothing,
ControlOffset {
start_y: f32,
start_offset: isize,
},
ControlOffsetFine {
start_x: f32,
start_offset_fine: isize,
},
ControlWidth {
start_x: f32,
start_width: isize,
},
}
pub fn run(options: CliOptions) -> Result<()> {
env_logger::init();
let event_loop = EventLoop::new();
let mut input = WinitInputHelper::new();
let window = {
let size = LogicalSize::new(WIDTH as f64, HEIGHT as f64);
WindowBuilder::new()
.with_title(format!(
"binocle - {}",
Path::new(&options.filename)
.file_name()
.map(|f| f.to_string_lossy())
.as_deref()
.unwrap_or("<unknown>")
))
.with_inner_size(size)
.with_min_inner_size(size)
.build(&event_loop)
.unwrap()
};
let (mut pixels, mut gui) = {
let window_size = window.inner_size();
let scale_factor = window.scale_factor();
let surface_texture = SurfaceTexture::new(window_size.width, window_size.height, &window);
let pixels = Pixels::new(WIDTH, HEIGHT, surface_texture)?;
let gui = Gui::new(window_size.width, window_size.height, scale_factor, &pixels);
(pixels, gui)
};
let mut binocle = Binocle::new(options)?;
let mut mouse_drag_action = MouseDragAction::Nothing;
event_loop.run(move |event, _, control_flow| {
// Update egui inputs
gui.handle_event(&event);
// Draw the current frame
if let Event::RedrawRequested(_) = event {
// Draw the binocle
binocle.draw(pixels.get_frame());
// Prepare egui
gui.prepare(&window, &mut binocle.settings);
// Render everything together
let render_result = pixels.render_with(|encoder, render_target, context| {
// Render the binocle texture
context.scaling_renderer.render(encoder, render_target);
// Render egui
gui.render(encoder, render_target, context)?;
Ok(())
});
// Basic error handling
if render_result
.map_err(|e| error!("pixels.render() failed: {}", e))
.is_err()
{
*control_flow = ControlFlow::Exit;
return;
}
}
// Handle input events
if input.update(&event) {
{
let mut settings = &mut binocle.settings;
let offset_factor = if input.held_shift() { 1 } else { 160 };
if !settings.gui_wants_keyboard {
// Close events
if input.key_pressed(VirtualKeyCode::Escape)
|| input.key_pressed(VirtualKeyCode::Q)
|| input.quit()
{
*control_flow = ControlFlow::Exit;
return;
}
// Fullscreen
if input.key_pressed(VirtualKeyCode::F) {
if window.fullscreen().is_none() {
window.set_fullscreen(Some(Fullscreen::Borderless(None)));
} else {
window.set_fullscreen(None)
}
}
// Hex view
if input.key_pressed(VirtualKeyCode::H) {
settings.hex_view_visible = !settings.hex_view_visible;
}
if input.key_pressed(VirtualKeyCode::Plus)
|| input.key_pressed(VirtualKeyCode::NumpadAdd)
{
settings.zoom += 1;
} else if input.key_pressed(VirtualKeyCode::Minus)
|| input.key_pressed(VirtualKeyCode::NumpadSubtract)
{
settings.zoom -= 1;
}
if input.key_pressed(VirtualKeyCode::Left) {
settings.width -= 1;
} else if input.key_pressed(VirtualKeyCode::Right) {
settings.width += 1;
}
if input.key_pressed(VirtualKeyCode::Up) {
settings.offset -= offset_factor * settings.width * settings.stride;
} else if input.key_pressed(VirtualKeyCode::Down) {
settings.offset += offset_factor * settings.width * settings.stride;
}
if input.key_pressed(VirtualKeyCode::N) {
settings.offset -= 1;
} else if input.key_pressed(VirtualKeyCode::M) {
settings.offset += 1;
}
if input.key_pressed(VirtualKeyCode::Comma) {
settings.stride -= 1;
} else if input.key_pressed(VirtualKeyCode::Period) {
settings.stride += 1;
}
if input.key_pressed(VirtualKeyCode::PageUp) {
settings.offset -= settings.width * settings.stride * (HEIGHT as isize);
} else if input.key_pressed(VirtualKeyCode::PageDown) {
settings.offset += settings.width * settings.stride * (HEIGHT as isize);
}
if input.key_pressed(VirtualKeyCode::Key1)
|| input.key_pressed(VirtualKeyCode::Numpad1)
{
settings.stride = 1;
} else if input.key_pressed(VirtualKeyCode::Key2)
|| input.key_pressed(VirtualKeyCode::Numpad2)
{
settings.stride = 2;
} else if input.key_pressed(VirtualKeyCode::Key3)
|| input.key_pressed(VirtualKeyCode::Numpad3)
{
settings.stride = 3;
} else if input.key_pressed(VirtualKeyCode::Key4)
|| input.key_pressed(VirtualKeyCode::Numpad4)
{
settings.stride = 4;
} else if input.key_pressed(VirtualKeyCode::Key5)
|| input.key_pressed(VirtualKeyCode::Numpad5)
{
settings.stride = 5;
} else if input.key_pressed(VirtualKeyCode::Key6)
|| input.key_pressed(VirtualKeyCode::Numpad6)
{
settings.stride = 6;
} else if input.key_pressed(VirtualKeyCode::Key7)
|| input.key_pressed(VirtualKeyCode::Numpad7)
{
settings.stride = 7;
} else if input.key_pressed(VirtualKeyCode::Key8)
|| input.key_pressed(VirtualKeyCode::Numpad8)
{
settings.stride = 8;
} else if input.key_pressed(VirtualKeyCode::Key9)
|| input.key_pressed(VirtualKeyCode::Numpad9)
{
settings.stride = 9;
}
if input.key_pressed(VirtualKeyCode::Home) {
settings.offset = 0;
settings.offset_fine = 0;
} else if input.key_pressed(VirtualKeyCode::End) {
settings.offset = settings.buffer_length
- settings.width * (HEIGHT as isize) * settings.stride;
settings.offset_fine = 0;
}
}
if !settings.gui_wants_mouse {
if input.scroll_diff().abs() > 0.5 {
let scroll = input.scroll_diff() as isize;
if input.held_control() {
settings.zoom += scroll;
} else if input.held_alt() {
settings.width += scroll;
} else {
settings.offset -=
offset_factor * scroll * settings.width * settings.stride;
}
}
if let Some((x, y)) = input.mouse() {
if input.mouse_pressed(0) {
if input.held_shift() {
mouse_drag_action = MouseDragAction::ControlOffsetFine {
start_x: x,
start_offset_fine: settings.offset_fine,
};
} else {
mouse_drag_action = MouseDragAction::ControlOffset {
start_y: y,
start_offset: settings.offset,
};
}
} else if input.mouse_pressed(1) {
mouse_drag_action = MouseDragAction::ControlWidth {
start_x: x,
start_width: settings.width,
};
}
}
if input.mouse_released(0) || input.mouse_released(1) {
mouse_drag_action = MouseDragAction::Nothing;
}
if input.mouse_held(0) || input.mouse_held(1) {
if let Some((x, y)) = input.mouse() {
let zoom_factor = settings.zoom_factor() as f32;
match mouse_drag_action {
MouseDragAction::ControlOffset {
start_y,
start_offset,
} => {
let delta_y = (y - start_y) / zoom_factor;
let min_offset =
start_offset % (settings.width * settings.stride);
settings.offset = min_offset.max(
start_offset
- (delta_y as isize) * settings.width * settings.stride,
);
}
MouseDragAction::ControlOffsetFine {
start_x,
start_offset_fine,
} => {
let delta_x = (x - start_x) / zoom_factor;
settings.offset_fine =
start_offset_fine - (delta_x as isize) * settings.stride;
}
MouseDragAction::ControlWidth {
start_x,
start_width,
} => {
let delta_x = (x - start_x) / zoom_factor;
settings.width = start_width + (delta_x as isize);
}
MouseDragAction::Nothing => {}
}
}
}
}
settings.zoom = settings.zoom.max(settings.zoom_range.0);
settings.zoom = settings.zoom.min(settings.zoom_range.1);
settings.width = settings.width.max(1);
settings.width = settings.width.min(settings.max_width());
settings.offset = settings.offset.max(0);
settings.offset = settings.offset.min(settings.buffer_length);
settings.offset_fine = settings.offset_fine.max(0);
settings.offset_fine = settings.offset_fine.min(settings.max_offset_fine());
settings.stride = settings.stride.max(1);
settings.stride = settings.stride.min(settings.max_stride);
// Update the scale factor
if let Some(scale_factor) = input.scale_factor() {
gui.scale_factor(scale_factor);
}
// Resize the window
if let Some(size) = input.window_resized() {
pixels.resize_surface(size.width, size.height);
gui.resize(size.width, size.height);
}
}
binocle.update_hex_view();
window.request_redraw();
}
});
}