问题描述
从 this rest api 获取异步数据并将其设置为 gtk-rs 中的标签会导致 gnome-session 崩溃。
重现：
#left_pane {
background-color: #ff3551;
}
#left_pane button {
background-color: transparent;
border: none;
}
#right_pane {
background-color: #131313;
font-size: 20px;
}
* {
color: white;
padding: 0;
margin: 0;
}
- 将以下依赖项放入
cargo.toml
[dependencies]
gtk = "0.9.2"
gdk = "0.13.2"
glib = "0.10.3"
gdk-pixbuf = "0.9.0"
async-std = "1.9.0"
reqwest = "0.11.2"
tokio = { version = "1.3.0",features = ["full"] }
- 将以下内容复制并粘贴到
main.rs
use std::ops::Deref;
use std::process::exit;
use std::rc::Rc;
use gdk_pixbuf::{Pixbuf,PixbufLoaderExt};
use gtk::{ButtonExt,ContainerExt,Cssprovider,CssproviderExt,GtkWindowExt,Image,Label,Orientation,WidgetExt,WindowType,LabelExt};
use gtk::prelude::WidgetExtManual;
use glib;
use glib::Continue;
use std::borrow::Borrow;
use std::thread::Thread;
use std::thread;
fn main() {
gtk::init().unwrap();
init_window();
gtk::main();
}
fn init_css(win: >k::Window) {
let css = Cssprovider::new();
css.load_from_path("main.css").unwrap();
let screen = win.get_screen().unwrap();
gtk::StyleContext::add_provider_for_screen(&screen,&css,gtk::STYLE_PROVIDER_PRIORITY_APPLICATION);
}
fn init_window() {
let win = gtk::Window::new(WindowType::Toplevel);
init_css(&win);
win.set_title("Youtube Tutorial");
win.connect_destroy(|_| exit(0));
{
let parent = gtk::Box::new(Orientation::Horizontal,2);
init_right_pane(&parent,init_left_pane(&parent));
win.add(&parent);
}
win.show_all();
}
struct LeftPaneElements {
home_bt: gtk::Button,about_bt: gtk::Button,}
fn init_right_pane(parent: >k::Box,left_pane_elements: LeftPaneElements) {
let right_pane = Rc::new(gtk::Box::new(Orientation::Horizontal,1));
right_pane.set_widget_name("right_pane");
right_pane.set_hexpand(true);
{
let right_pane = right_pane.clone();
left_pane_elements.home_bt.connect_clicked(move |_| {
if let Some(s) = right_pane.get_children().get(0) {
right_pane.remove(s);
}
let label = Rc::new(Label::new(Some("Home")));
label.set_label("Fetching...");
let (ready_tx,ready_rx) = glib::MainContext::channel(glib::PRIORITY_DEFAULT);
tokio::runtime::Runtime::new().unwrap().block_on(async {
println!("Thread name on async is {}",thread::current().name().unwrap_or("unkNown"));
let str = reqwest::get("https://api.covid19api.com/summary").await.unwrap().text().await.unwrap();
ready_tx.send(str).unwrap();
});
label.set_visible(true);
right_pane.add(label.deref());
let label = label.clone();
ready_rx.attach(None,move |str| {
println!("Thread name on receiving {} is {}",str,thread::current().name().unwrap_or("unkNown"));
label.set_label(&format!(" {} ",str));
Continue(true)
});
});
}
{
let right_pane = right_pane.clone();
left_pane_elements.about_bt.connect_clicked(move |_| {
if let Some(s) = right_pane.get_children().get(0) {
right_pane.remove(s);
}
let label = Label::new(Some("About"));
label.set_visible(true);
right_pane.add(&label);
});
}
parent.add(right_pane.deref());
}
fn init_left_pane(parent: >k::Box) -> LeftPaneElements {
let left_pane = gtk::Box::new(Orientation::Vertical,4);
left_pane.set_widget_name("left_pane");
left_pane.set_property_width_request(50);
{
let space = gtk::Box::new(Orientation::Vertical,0);
space.set_vexpand(true);
left_pane.add(&space);
}
let left_pane_elements = LeftPaneElements {
home_bt: {
let home_bt = gtk::Button::new();
home_bt.set_image(Some(&Image::from_pixbuf(Some(&Pixbuf::from_file_at_scale("home.svg",25,true).unwrap()))));
home_bt.set_size_request(50,50);
left_pane.add(&home_bt);
home_bt
},about_bt: {
let about_bt = gtk::Button::new();
about_bt.set_size_request(50,50);
about_bt.set_image(Some(&Image::from_pixbuf(Some(&Pixbuf::from_file_at_scale("about.svg",true).unwrap()))));
left_pane.add(&about_bt);
about_bt
},};
{
let space = gtk::Box::new(Orientation::Vertical,0);
space.set_vexpand(true);
left_pane.add(&space);
}
parent.add(&left_pane);
left_pane_elements
}
- 编译并运行程序
- 点击左侧面板中的主页按钮
- Gnome shell 崩溃
代码在 bspwm 和 Xephyr 下使用 Xephyr -br -ac -reset -softCursor -screen 1600x900 :2 运行良好。
当在行号 &str[3..10] 上使用 68 对字符串进行切片时，该错误似乎已解决。似乎是退格字符及其在开罗中的渲染问题，或者可能是合成器的问题。我想不出会话崩溃而不是应用程序崩溃的原因。
neofetch output
██████████████████ ████████ aniketfuryrocks@manjaro
██████████████████ ████████ -----------------------
██████████████████ ████████ OS: manjaro Linux x86_64
██████████████████ ████████ Host: 81BF Ideapad 520-15IKB
████████ ████████ Kernel: 5.11.2-1-manjaro
████████ ████████ ████████ Uptime: 23 mins
████████ ████████ ████████ Packages: 1468 (pacman),11 (flatpak),5 (snap)
████████ ████████ ████████ Shell: zsh 5.8
████████ ████████ ████████ Resolution: 1600x900,1920x1080
████████ ████████ ████████ DE: GNOME 3.38.3
████████ ████████ ████████ WM: Mutter
████████ ████████ ████████ WM Theme: Matcha-dark-sea
████████ ████████ ████████ Theme: Matcha-dark-sea [GTK2/3]
████████ ████████ ████████ Icons: Papirus-Dark-Maia [GTK2/3]
Terminal: alacritty
Terminal Font: black: '
cpu: Intel i5-8250U (8) @ 3.400GHz
GPU: Intel UHD Graphics 620
GPU: NVIDIA GeForce MX150
Memory: 4301MiB / 7865MiB
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@）