ui: scroll in shortcuts panel
parent
91ae539de1
commit
6d40a57a2e
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@ -1140,6 +1140,9 @@ pub struct Tabbed {
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cursor_pos: usize,
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show_shortcuts: bool,
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help_screen_cursor: (usize, usize),
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help_content: CellBuffer,
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help_curr_views: ShortcutMaps,
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dirty: bool,
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id: ComponentId,
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@ -1153,6 +1156,9 @@ impl Tabbed {
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children,
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cursor_pos: 0,
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show_shortcuts: false,
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help_content: CellBuffer::default(),
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help_screen_cursor: (0, 0),
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help_curr_views: ShortcutMaps::default(),
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dirty: true,
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id: ComponentId::new_v4(),
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}
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@ -1232,9 +1238,18 @@ impl Component for Tabbed {
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set_x(upper_left!(area), get_x(bottom_right!(area))),
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),
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);
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self.dirty = false;
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context.dirty_areas.push_back((
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upper_left!(area),
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set_x(upper_left!(area), get_x(bottom_right!(area))),
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));
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}
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/* If children are dirty but self isn't and the shortcuts panel is visible, it will get
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* overwritten. */
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let must_redraw_shortcuts: bool = self.show_shortcuts && !self.dirty && self.is_dirty();
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/* children should be drawn after the shortcuts/help panel lest they overwrite the panel on
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* the grid. the drawing order is determined by the dirty_areas queue which is LIFO */
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if self.children.len() > 1 {
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self.draw_tabs(
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grid,
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@ -1254,7 +1269,7 @@ impl Component for Tabbed {
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self.children[self.cursor_pos].draw(grid, area, context);
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}
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if self.show_shortcuts {
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if (self.show_shortcuts && self.dirty) || must_redraw_shortcuts {
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let area = (
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pos_inc(upper_left!(area), (2, 1)),
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set_x(
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@ -1262,70 +1277,139 @@ impl Component for Tabbed {
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get_x(bottom_right!(area)).saturating_sub(2),
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),
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);
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context.dirty_areas.push_back(area);
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clear_area(grid, area);
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create_box(grid, area);
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let mut idx = 0;
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// TODO: print into a pager
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for (desc, shortcuts) in self.children[self.cursor_pos]
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.get_shortcuts(context)
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.into_iter()
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{
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write_string_to_grid(
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&desc,
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let area = (
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pos_inc(upper_left!(area), (3, 2)),
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set_x(
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bottom_right!(area),
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get_x(bottom_right!(area)).saturating_sub(3),
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),
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);
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let children_maps = self.children[self.cursor_pos].get_shortcuts(context);
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if children_maps.is_empty() {
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return;
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}
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if (children_maps == self.help_curr_views) && must_redraw_shortcuts {
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let (width, height) = self.help_content.size();
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let (cols, rows) = (width!(area), height!(area));
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copy_area(
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grid,
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&self.help_content,
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area,
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(
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(
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std::cmp::min(
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(width - 1).saturating_sub(cols),
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self.help_screen_cursor.0,
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),
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std::cmp::min(
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(height - 1).saturating_sub(rows),
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self.help_screen_cursor.1,
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),
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),
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(
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std::cmp::min(self.help_screen_cursor.0 + cols, width - 1),
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std::cmp::min(self.help_screen_cursor.1 + rows, height - 1),
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),
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),
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);
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self.dirty = false;
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return;
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}
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self.help_curr_views = children_maps;
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let mut max_length = 5;
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let mut max_width = "Use Up, Down, Left, Right to scroll.".len() + 3;
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for (desc, shortcuts) in self.help_curr_views.iter() {
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max_length += shortcuts.len() + 3;
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max_width = std::cmp::max(
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max_width,
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std::cmp::max(
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desc.len(),
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shortcuts.keys().map(|k| k.len() + 5).max().unwrap_or(0),
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),
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);
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}
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self.help_content = CellBuffer::new(max_width, max_length + 2, Cell::default());
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let (width, height) = self.help_content.size();
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let (cols, rows) = (width!(area), height!(area));
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if cols == 0 || rows == 0 {
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return;
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}
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/* trim cursor if it's bigger than the help screen */
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self.help_screen_cursor = (
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std::cmp::min(width.saturating_sub(cols), self.help_screen_cursor.0),
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std::cmp::min(height.saturating_sub(rows), self.help_screen_cursor.1),
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);
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/* In this case we will be scrolling, so show the user how to do it */
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if height.wrapping_div(rows) > 0 || width.wrapping_div(cols) > 0 {
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write_string_to_grid(
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"Use Up, Down, Left, Right to scroll.",
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&mut self.help_content,
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Color::Default,
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Color::Default,
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Attr::Default,
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(
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pos_inc(upper_left!(area), (2, 1 + idx)),
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set_x(
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bottom_right!(area),
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get_x(bottom_right!(area)).saturating_sub(2),
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),
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),
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((2, 0), (max_width.saturating_sub(2), max_length - 1)),
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false,
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);
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}
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let mut idx = 0;
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for (desc, shortcuts) in self.help_curr_views.iter() {
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write_string_to_grid(
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desc,
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&mut self.help_content,
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Color::Default,
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Color::Default,
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Attr::Default,
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((2, 2 + idx), (max_width.saturating_sub(2), max_length - 1)),
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false,
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);
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idx += 2;
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let mut shortcuts = shortcuts.into_iter().collect::<Vec<_>>();
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let mut shortcuts = shortcuts.iter().collect::<Vec<_>>();
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shortcuts.sort_unstable_by_key(|(ref k, _)| *k);
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for (k, v) in shortcuts {
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debug!(&(k, v));
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let (x, y) = write_string_to_grid(
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&k,
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grid,
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&mut self.help_content,
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Color::Byte(29),
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Color::Default,
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Attr::Default,
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(
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pos_inc(upper_left!(area), (2, 1 + idx)),
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set_x(
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bottom_right!(area),
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get_x(bottom_right!(area)).saturating_sub(2),
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),
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),
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((2, 2 + idx), (max_width.saturating_sub(2), max_length - 1)),
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false,
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);
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write_string_to_grid(
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&format!("{}", v),
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grid,
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&mut self.help_content,
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Color::Default,
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Color::Default,
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Attr::Default,
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(
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(x + 2, y),
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set_x(
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bottom_right!(area),
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get_x(bottom_right!(area)).saturating_sub(2),
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),
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),
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((x + 2, y), (max_width.saturating_sub(2), max_length - 1)),
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false,
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);
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idx += 1;
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}
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idx += 1;
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}
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context.dirty_areas.push_back(area);
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copy_area(
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grid,
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&self.help_content,
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area,
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(
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(
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std::cmp::min((width - 1).saturating_sub(cols), self.help_screen_cursor.0),
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std::cmp::min((height - 1).saturating_sub(rows), self.help_screen_cursor.1),
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),
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(
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std::cmp::min(self.help_screen_cursor.0 + cols, width - 1),
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std::cmp::min(self.help_screen_cursor.1 + rows, height - 1),
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),
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),
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);
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}
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self.dirty = false;
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}
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fn process_event(&mut self, event: &mut UIEvent, context: &mut Context) -> bool {
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match *event {
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@ -1342,8 +1426,12 @@ impl Component for Tabbed {
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return true;
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}
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UIEvent::Input(Key::Char('?')) => {
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if self.show_shortcuts {
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/* children below the shortcut overlay must be redrawn */
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self.set_dirty();
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}
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self.show_shortcuts = !self.show_shortcuts;
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self.set_dirty();
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self.dirty = true;
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return true;
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}
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UIEvent::Action(Tab(NewDraft(account_idx, ref draft))) => {
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@ -1399,6 +1487,31 @@ impl Component for Tabbed {
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);
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}
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}
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UIEvent::Resize => {
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self.dirty = true;
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}
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UIEvent::Input(ref k) if self.show_shortcuts => {
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match k {
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Key::Up => {
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self.help_screen_cursor.1 = self.help_screen_cursor.1.saturating_sub(1);
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}
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Key::Down => {
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self.help_screen_cursor.1 = self.help_screen_cursor.1 + 1;
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}
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Key::Left => {
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self.help_screen_cursor.0 = self.help_screen_cursor.0.saturating_sub(1);
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}
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Key::Right => {
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self.help_screen_cursor.0 = self.help_screen_cursor.0 + 1;
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}
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_ => {
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/* ignore, don't pass to components below the shortcut panel */
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return false;
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}
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}
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self.dirty = true;
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return true;
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}
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_ => {}
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}
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self.children[self.cursor_pos].process_event(event, context)
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