我最近一直在学习使用 gtk-rs 制作简单的 GUI，但遇到了一个问题，即数字数据在列表存储/树视图中左对齐，我希望它右对齐。
下面的代码是从这里修改的：https ://github.com/gtk-rs/examples/blob/master/src/bin/list_store.rs
通过使用“.set_alignment”，我已经能够使列标题居中（日期）和右（人口和区域），但无法更改数据本身的对齐方式。
字符串数据很容易操作（我在日期项目中嵌入了一个选项卡，它排列得很好。但是，如果我将人口和区域数据更改为格式化字符串，它们将在单击列标题时按此排序，而不是作为数字。
非常感谢任何和所有帮助！
extern crate gio;
extern crate gtk;
use gtk::prelude::*;
use std::rc::Rc;
use std::env::args;
use gio::prelude::*;
#[repr(i32)]
enum Columns {
State,
Population,
Area,
Date,
}
fn build_ui(application: >k::Application) {
let window = gtk::ApplicationWindow::new(application);
window.set_title("List Store");
window.set_border_width(10);
window.set_position(gtk::WindowPosition::Center);
window.set_default_size(300, 500);
let vbox = gtk::Box::new(gtk::Orientation::Vertical, 8);
window.add(&vbox);
let label = gtk::Label::new(Some("US State Facts"));
vbox.add(&label);
let sw = gtk::ScrolledWindow::new(None::<>k::Adjustment>, None:: <>k::Adjustment>);
sw.set_shadow_type(gtk::ShadowType::EtchedIn);
sw.set_policy(gtk::PolicyType::Never, gtk::PolicyType::Automatic);
vbox.add(&sw);
let model = Rc::new(create_model());
let treeview = gtk::TreeView::new_with_model(&*model);
treeview.set_vexpand(true);
sw.add(&treeview);
add_columns(&treeview);
window.show_all();
}
struct Data {
state: String,
population: u32,
area: u32,
date: String,
}
fn create_model() -> gtk::ListStore {
let col_types: [gtk::Type; 4] = [
gtk::Type::String,
gtk::Type::U32,
gtk::Type::U32,
gtk::Type::String,
];
let data: [Data; 14] = [
Data {
state: "Alabama".to_string(),
population: 4887871,
area: 125767,
date: "\t1819.12.14".to_string(),
},
Data {
state: "Alaska".to_string(),
population: 737438,
area: 1723337,
date: "\t1959.01.03".to_string(),
},
Data {
state: "Arkansas".to_string(),
population: 3013825,
area: 137732,
date: "\t1836.06.15".to_string(),
},
Data {
state: "Arizona".to_string(),
population: 7171646,
area: 295234,
date: "\t1912.02.14".to_string(),
},
Data {
state: "California".to_string(),
population: 39557045,
area: 423972,
date: "\t1850.09.09".to_string(),
},
Data {
state: "Colorado".to_string(),
population: 5695564,
area: 269601,
date: "\t1876.08.01".to_string(),
},
Data {
state: "Connecticut".to_string(),
population: 3572665,
area: 14357,
date: "\t1788.01.09".to_string(),
},
Data {
state: "Delaware".to_string(),
population: 967171,
area: 6446,
date: "\t1787.12.07".to_string(),
},
Data {
state: "Maine".to_string(),
population: 1338404,
area: 91633,
date: "\t1820.03.15".to_string(),
},
Data {
state: "Maryland".to_string(),
population: 6042718,
area: 32131,
date: "\t1788.04.28".to_string(),
},
Data {
state: "Massachusetts".to_string(),
population: 6902149,
area: 27336,
date: "\t1788.02.06".to_string(),
},
Data {
state: "Michigan".to_string(),
population: 9998915,
area: 250487,
date: "\t1837.01.26".to_string(),
},
Data {
state: "Missouri".to_string(),
population: 6126452,
area: 180540,
date: "\t1821.08.10".to_string(),
},
Data {
state: "Nebraska".to_string(),
population: 1929268,
area: 200330,
date: "\t1867.03.01".to_string(),
},
];
let store = gtk::ListStore::new(&col_types);
let col_indices: [u32; 4] = [0, 1, 2, 3];
for (_, d) in data.iter().enumerate() {
let values: [&dyn ToValue; 4] = [
&d.state,
&d.population,
&d.area,
&d.date,
];
store.set(&store.append(), &col_indices, &values);
}
store
}
//fn add_columns(treeview: >k::TreeView)
fn add_columns(treeview: >k::TreeView) {
// Column for state name
{
let renderer = gtk::CellRendererText::new();
let column = gtk::TreeViewColumn::new();
column.pack_start(&renderer, true);
column.set_title("State");
column.add_attribute(&renderer, "text", Columns::State as i32);
column.set_sort_column_id(Columns::State as i32);
column.set_fixed_width(150);
column.set_alignment(0.0);
treeview.append_column(&column);
}
// Column for population
{
let renderer = gtk::CellRendererText::new();
let column = gtk::TreeViewColumn::new();
column.pack_start(&renderer, true);
column.set_title("Population");
column.add_attribute(&renderer, "text", Columns::Population as i32);
column.set_sort_column_id(Columns::Population as i32);
column.set_fixed_width(150);
column.set_alignment(1.0);
treeview.append_column(&column);
}
// Column for area
{
let renderer = gtk::CellRendererText::new();
let column = gtk::TreeViewColumn::new();
column.pack_start(&renderer, true);
column.set_title("Area");
column.add_attribute(&renderer, "text", Columns::Area as i32);
column.set_sort_column_id(Columns::Area as i32);
column.set_fixed_width(150);
column.set_alignment(1.0);
treeview.append_column(&column);
}
// Column for date
{
let renderer = gtk::CellRendererText::new();
let column = gtk::TreeViewColumn::new();
column.pack_start(&renderer, true);
column.set_title("Date");
column.add_attribute(&renderer, "text", Columns::Date as i32);
column.set_sort_column_id(Columns::Date as i32);
column.set_fixed_width(150);
column.set_alignment(0.5);
treeview.append_column(&column);
}
}
fn main() {
let application = gtk::Application::new(
Some("com.github.gtk-rs.examples.list-store"),
Default::default(),
)
.expect("Initialization failed...");
application.connect_startup(|app| {
build_ui(app);
});
application.connect_activate(|_| {});
application.run(&args().collect::<Vec<_>>());
}
货物.toml：
[package]
name = "testit"
version = "0.1.0"
authors = ["jerry"]
edition = "2018"
[dependencies]
gio = "0.7.0"
gtk = "0.7.0"
修复：renderer.set_alignment(1.0, 1.0);
// Column for population
{
let renderer = gtk::CellRendererText::new();
renderer.set_alignment(1.0, 1.0);
let column = gtk::TreeViewColumn::new();
column.pack_start(&renderer, true);
column.set_title("Population");
column.add_attribute(&renderer, "text", Columns::Population as i32);
column.set_sort_column_id(Columns::Population as i32);
column.set_fixed_width(150);
column.set_alignment(1.0);
treeview.append_column(&column);
}
好结果：
编译器错误：
