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#![allow(dead_code)]
mod closable_tab {
use fltk::{
app, button,
enums::{Align, Color, FrameType},
group,
prelude::*,
};
#[derive(Copy, Clone)]
pub enum Message {
Foreground(i32),
Delete(i32),
InsertNew(i32),
}
fn create_tab_button(label: &str) -> group::Group {
let mut grp = group::Group::new(0, 0, 150, 40, None);
grp.set_align(Align::Left | Align::Inside);
let mut but_handle = button::Button::new(grp.x() + 5, grp.y() + 5, 110, 30, "");
but_handle.set_align(Align::Left | Align::Inside);
but_handle.set_label(label);
let mut but_close = button::Button::new(grp.x() + 120, grp.y() + 10, 20, 20, "@1+");
but_handle.set_frame(FrameType::FlatBox);
but_handle.clear_visible_focus();
but_close.set_frame(FrameType::FlatBox);
grp.end();
grp.set_frame(FrameType::UpFrame);
grp
}
pub struct ClosableTab<'a> {
current: Option<i32>,
snd: &'a app::Sender<Message>,
contents: group::Group,
tab_labels: group::Pack,
}
impl<'a> ClosableTab<'a> {
pub fn new(x: i32, y: i32, w: i32, h: i32, snd: &'a app::Sender<Message>) -> Self {
let current = None;
let parent_grp = group::Group::new(x, y, w, h, None);
let mut tab_labels = group::Pack::new(x + 5, y, w - 10, 40, None);
tab_labels.set_spacing(3);
tab_labels.set_type(group::PackType::Horizontal);
tab_labels.end();
let mut contents = group::Group::new(x, y + 40, w, h - 40, None);
contents.set_frame(FrameType::NoBox);
contents.end();
parent_grp.end();
Self {
current,
snd,
contents,
tab_labels,
}
}
pub fn add(&mut self, child: &mut group::Group, label: &str) {
child.resize(
self.contents.x(),
self.contents.y(),
self.contents.w(),
self.contents.h(),
);
self.contents.add(child);
let but = create_tab_button(label);
self.tab_labels.add(&but);
but.child(1).unwrap().set_callback({
let curr_child = child.clone();
let contents = self.contents.clone();
let sndb = *self.snd;
move |_| {
let idx = contents.find(&curr_child);
sndb.send(Message::Delete(idx));
app::redraw();
}
});
but.child(0).unwrap().set_callback({
let curr_child = child.clone();
let contents = self.contents.clone();
let sndb = *self.snd;
move |_| {
let idx = contents.find(&curr_child);
sndb.send(Message::Foreground(idx));
app::redraw();
}
});
}
pub fn remove(&mut self, idx: i32) {
self.contents.remove_by_index(idx);
self.tab_labels.remove_by_index(idx);
if self.current == Some(idx) {
if idx > 1 {
self.set_foreground(idx - 1);
} else if self.contents.children() > 0 {
self.set_foreground(0);
}
}
}
pub fn set_foreground(&mut self, fg_idx: i32) {
for idx in 0..self.contents.children() {
if idx != fg_idx {
self.contents.child(idx).unwrap().hide();
self.tab_labels
.child(idx)
.unwrap()
.set_label_color(fltk::enums::Color::Inactive);
self.tab_labels
.child(idx)
.unwrap()
.set_color(fltk::enums::Color::Inactive);
self.tab_labels
.child(idx)
.unwrap()
.set_frame(FrameType::DownFrame);
} else {
self.contents.child(idx).unwrap().show();
self.tab_labels
.child(idx)
.unwrap()
.set_label_color(Color::Selection);
self.tab_labels
.child(idx)
.unwrap()
.set_color(fltk::enums::Color::Selection);
self.tab_labels
.child(idx)
.unwrap()
.set_frame(FrameType::NoBox);
}
self.tab_labels.child(idx).unwrap().set_damage(true);
self.tab_labels.child(idx).unwrap().redraw();
self.current = Some(fg_idx);
}
}
pub fn get_foreground(&self) -> Option<i32> {
self.current
}
}
}
fn main() {
use fltk::{prelude::*, *};
pub fn create_tab(from: i32, to: i32) -> group::Group {
let grp = group::Group::new(0, 0, 800, 600, None);
for idx in from..to {
button::Button::new(
idx * 10 + (idx - from) * 42,
idx * 10 + (idx - from) * 42,
80,
40,
None,
)
.with_label(&format!("button {}", idx));
}
grp.end();
grp
}
let app = app::App::default();
let mut win = window::Window::default().with_size(800, 600);
let (s, r) = app::channel::<closable_tab::Message>();
let mut tabs = closable_tab::ClosableTab::new(0, 0, 800, 600, &s);
win.end();
win.show();
tabs.add(&mut create_tab(1, 3), "tab 1");
tabs.add(&mut create_tab(4, 7), "tab 2");
tabs.add(&mut create_tab(8, 11), "tab 3");
tabs.add(&mut create_tab(12, 15), "tab 4");
tabs.add(&mut create_tab(16, 22), "tab 5");
tabs.set_foreground(2);
while app.wait() {
use closable_tab::Message::*;
if let Some(msg) = r.recv() {
match msg {
Foreground(idx) => {
tabs.set_foreground(idx);
}
Delete(idx) => {
tabs.remove(idx);
}
InsertNew(_) => {}
}
}
}
}
