ui: scroll in shortcuts panel

embed
Manos Pitsidianakis 2019-09-25 23:15:20 +03:00
parent 91ae539de1
commit 6d40a57a2e
Signed by: Manos Pitsidianakis
GPG Key ID: 73627C2F690DF710
1 changed files with 150 additions and 37 deletions

View File

@ -1140,6 +1140,9 @@ pub struct Tabbed {
cursor_pos: usize,
show_shortcuts: bool,
help_screen_cursor: (usize, usize),
help_content: CellBuffer,
help_curr_views: ShortcutMaps,
dirty: bool,
id: ComponentId,
@ -1153,6 +1156,9 @@ impl Tabbed {
children,
cursor_pos: 0,
show_shortcuts: false,
help_content: CellBuffer::default(),
help_screen_cursor: (0, 0),
help_curr_views: ShortcutMaps::default(),
dirty: true,
id: ComponentId::new_v4(),
}
@ -1232,9 +1238,18 @@ impl Component for Tabbed {
set_x(upper_left!(area), get_x(bottom_right!(area))),
),
);
self.dirty = false;
context.dirty_areas.push_back((
upper_left!(area),
set_x(upper_left!(area), get_x(bottom_right!(area))),
));
}
/* If children are dirty but self isn't and the shortcuts panel is visible, it will get
* overwritten. */
let must_redraw_shortcuts: bool = self.show_shortcuts && !self.dirty && self.is_dirty();
/* children should be drawn after the shortcuts/help panel lest they overwrite the panel on
* the grid. the drawing order is determined by the dirty_areas queue which is LIFO */
if self.children.len() > 1 {
self.draw_tabs(
grid,
@ -1254,7 +1269,7 @@ impl Component for Tabbed {
self.children[self.cursor_pos].draw(grid, area, context);
}
if self.show_shortcuts {
if (self.show_shortcuts && self.dirty) || must_redraw_shortcuts {
let area = (
pos_inc(upper_left!(area), (2, 1)),
set_x(
@ -1262,70 +1277,139 @@ impl Component for Tabbed {
get_x(bottom_right!(area)).saturating_sub(2),
),
);
context.dirty_areas.push_back(area);
clear_area(grid, area);
create_box(grid, area);
let mut idx = 0;
// TODO: print into a pager
for (desc, shortcuts) in self.children[self.cursor_pos]
.get_shortcuts(context)
.into_iter()
{
write_string_to_grid(
&desc,
let area = (
pos_inc(upper_left!(area), (3, 2)),
set_x(
bottom_right!(area),
get_x(bottom_right!(area)).saturating_sub(3),
),
);
let children_maps = self.children[self.cursor_pos].get_shortcuts(context);
if children_maps.is_empty() {
return;
}
if (children_maps == self.help_curr_views) && must_redraw_shortcuts {
let (width, height) = self.help_content.size();
let (cols, rows) = (width!(area), height!(area));
copy_area(
grid,
&self.help_content,
area,
(
(
std::cmp::min(
(width - 1).saturating_sub(cols),
self.help_screen_cursor.0,
),
std::cmp::min(
(height - 1).saturating_sub(rows),
self.help_screen_cursor.1,
),
),
(
std::cmp::min(self.help_screen_cursor.0 + cols, width - 1),
std::cmp::min(self.help_screen_cursor.1 + rows, height - 1),
),
),
);
self.dirty = false;
return;
}
self.help_curr_views = children_maps;
let mut max_length = 5;
let mut max_width = "Use Up, Down, Left, Right to scroll.".len() + 3;
for (desc, shortcuts) in self.help_curr_views.iter() {
max_length += shortcuts.len() + 3;
max_width = std::cmp::max(
max_width,
std::cmp::max(
desc.len(),
shortcuts.keys().map(|k| k.len() + 5).max().unwrap_or(0),
),
);
}
self.help_content = CellBuffer::new(max_width, max_length + 2, Cell::default());
let (width, height) = self.help_content.size();
let (cols, rows) = (width!(area), height!(area));
if cols == 0 || rows == 0 {
return;
}
/* trim cursor if it's bigger than the help screen */
self.help_screen_cursor = (
std::cmp::min(width.saturating_sub(cols), self.help_screen_cursor.0),
std::cmp::min(height.saturating_sub(rows), self.help_screen_cursor.1),
);
/* In this case we will be scrolling, so show the user how to do it */
if height.wrapping_div(rows) > 0 || width.wrapping_div(cols) > 0 {
write_string_to_grid(
"Use Up, Down, Left, Right to scroll.",
&mut self.help_content,
Color::Default,
Color::Default,
Attr::Default,
(
pos_inc(upper_left!(area), (2, 1 + idx)),
set_x(
bottom_right!(area),
get_x(bottom_right!(area)).saturating_sub(2),
),
),
((2, 0), (max_width.saturating_sub(2), max_length - 1)),
false,
);
}
let mut idx = 0;
for (desc, shortcuts) in self.help_curr_views.iter() {
write_string_to_grid(
desc,
&mut self.help_content,
Color::Default,
Color::Default,
Attr::Default,
((2, 2 + idx), (max_width.saturating_sub(2), max_length - 1)),
false,
);
idx += 2;
let mut shortcuts = shortcuts.into_iter().collect::<Vec<_>>();
let mut shortcuts = shortcuts.iter().collect::<Vec<_>>();
shortcuts.sort_unstable_by_key(|(ref k, _)| *k);
for (k, v) in shortcuts {
debug!(&(k, v));
let (x, y) = write_string_to_grid(
&k,
grid,
&mut self.help_content,
Color::Byte(29),
Color::Default,
Attr::Default,
(
pos_inc(upper_left!(area), (2, 1 + idx)),
set_x(
bottom_right!(area),
get_x(bottom_right!(area)).saturating_sub(2),
),
),
((2, 2 + idx), (max_width.saturating_sub(2), max_length - 1)),
false,
);
write_string_to_grid(
&format!("{}", v),
grid,
&mut self.help_content,
Color::Default,
Color::Default,
Attr::Default,
(
(x + 2, y),
set_x(
bottom_right!(area),
get_x(bottom_right!(area)).saturating_sub(2),
),
),
((x + 2, y), (max_width.saturating_sub(2), max_length - 1)),
false,
);
idx += 1;
}
idx += 1;
}
context.dirty_areas.push_back(area);
copy_area(
grid,
&self.help_content,
area,
(
(
std::cmp::min((width - 1).saturating_sub(cols), self.help_screen_cursor.0),
std::cmp::min((height - 1).saturating_sub(rows), self.help_screen_cursor.1),
),
(
std::cmp::min(self.help_screen_cursor.0 + cols, width - 1),
std::cmp::min(self.help_screen_cursor.1 + rows, height - 1),
),
),
);
}
self.dirty = false;
}
fn process_event(&mut self, event: &mut UIEvent, context: &mut Context) -> bool {
match *event {
@ -1342,8 +1426,12 @@ impl Component for Tabbed {
return true;
}
UIEvent::Input(Key::Char('?')) => {
if self.show_shortcuts {
/* children below the shortcut overlay must be redrawn */
self.set_dirty();
}
self.show_shortcuts = !self.show_shortcuts;
self.set_dirty();
self.dirty = true;
return true;
}
UIEvent::Action(Tab(NewDraft(account_idx, ref draft))) => {
@ -1399,6 +1487,31 @@ impl Component for Tabbed {
);
}
}
UIEvent::Resize => {
self.dirty = true;
}
UIEvent::Input(ref k) if self.show_shortcuts => {
match k {
Key::Up => {
self.help_screen_cursor.1 = self.help_screen_cursor.1.saturating_sub(1);
}
Key::Down => {
self.help_screen_cursor.1 = self.help_screen_cursor.1 + 1;
}
Key::Left => {
self.help_screen_cursor.0 = self.help_screen_cursor.0.saturating_sub(1);
}
Key::Right => {
self.help_screen_cursor.0 = self.help_screen_cursor.0 + 1;
}
_ => {
/* ignore, don't pass to components below the shortcut panel */
return false;
}
}
self.dirty = true;
return true;
}
_ => {}
}
self.children[self.cursor_pos].process_event(event, context)