hasufell/neovim-gtk
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Adapt size to contents

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This commit is contained in:
daa84 2017-05-24 17:51:16 +03:00
parent 04c60cd61f
commit 5f7019dd0d
2 changed files with 54 additions and 10 deletions
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52
src/popup_menu.rs
View File

@ -1,5 +1,6 @@
use std::rc::Rc;
use std::cell::RefCell;
use std::cmp::min;
use gtk;
use gtk::prelude::*;
@ -13,12 +14,13 @@ use nvim::ErrorReport;
use input;
const MIN_CONTENT_HEIGHT: i32 = 250;
const MAX_VISIBLE_ROWS: i32 = 10;
struct State {
nvim: Option<Rc<RefCell<Neovim>>>,
renderer: gtk::CellRendererText,
tree: gtk::TreeView,
scroll: gtk::ScrolledWindow,
}
impl State {
@ -27,6 +29,7 @@ impl State {
nvim: None,
renderer: gtk::CellRendererText::new(),
tree: gtk::TreeView::new(),
scroll: gtk::ScrolledWindow::new(None, None),
}
}
@ -74,7 +77,6 @@ impl State {
}
self.tree.set_model(Some(&list_store));
self.tree.set_headers_visible(false);
}
fn append_column(&self, id: i32) {
@ -96,6 +98,17 @@ impl State {
self.tree.get_selection().unselect_all();
}
}
fn calc_treeview_height(&self) -> i32 {
let (_, natural_size) = self.renderer.get_preferred_height(&self.tree);
let (_, ypad) = self.renderer.get_padding();
let row_height = natural_size + ypad;
let actual_count = self.tree.get_model().unwrap().iter_n_children(None);
row_height * min(actual_count, MAX_VISIBLE_ROWS) as i32
}
}
pub struct PopupMenu {
@ -115,13 +128,11 @@ impl PopupMenu {
state.tree.set_can_focus(false);
let scroll = gtk::ScrolledWindow::new(None, None);
scroll.set_policy(gtk::PolicyType::Never, gtk::PolicyType::Automatic);
scroll.set_min_content_height(MIN_CONTENT_HEIGHT);
state.scroll.set_policy(gtk::PolicyType::Never, gtk::PolicyType::Automatic);
scroll.add(&state.tree);
scroll.show_all();
popover.add(&scroll);
state.scroll.add(&state.tree);
state.scroll.show_all();
popover.add(&state.scroll);
let state = Rc::new(RefCell::new(state));
let state_ref = state.clone();
@ -130,6 +141,10 @@ impl PopupMenu {
let mut nvim = state.nvim.as_ref().unwrap().borrow_mut();
tree_button_press(tree, ev, &mut *nvim)
});
let state_ref = state.clone();
state.borrow().tree.connect_size_allocate(move |_, _| on_treeview_allocate(state_ref.clone()));
let state_ref = state.clone();
popover.connect_key_press_event(move |_, ev| {
let state = state_ref.borrow();
@ -229,3 +244,24 @@ fn find_scroll_count(selected_idx: i32, target_idx: i32) -> i32 {
selected_idx - target_idx
}
}
fn on_treeview_allocate(state: Rc<RefCell<State>>) {
let treeview_height = state.borrow().calc_treeview_height();
idle_add(move || {
let state = state.borrow();
// strange solution to make gtk assertions happy
let previous_height = state.scroll.get_max_content_height();
if previous_height < treeview_height {
state.scroll.set_max_content_height(treeview_height);
state.scroll.set_min_content_height(treeview_height);
} else if previous_height > treeview_height {
state.scroll.set_min_content_height(treeview_height);
state.scroll.set_max_content_height(treeview_height);
}
Continue(false)
});
}

8
src/project.rs
View File

@ -335,8 +335,16 @@ fn on_treeview_allocate(projects: Rc<RefCell<Projects>>) {
idle_add(move || {
let prj = projects.borrow();
// strange solution to make gtk assertions happy
let previous_height = prj.scroll.get_max_content_height();
if previous_height < treeview_height {
prj.scroll.set_max_content_height(treeview_height);
prj.scroll.set_min_content_height(treeview_height);
} else if previous_height > treeview_height {
prj.scroll.set_min_content_height(treeview_height);
prj.scroll.set_max_content_height(treeview_height);
}
Continue(false)
});
}