pub fn manager() -> &'static Mutex<KittyManager>Examples found in repository?
src/app/app.rs (line 222)
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fn display_panels(
&mut self,
w: &mut W,
skin: &AppSkin,
app_state: &AppState,
con: &AppContext,
) -> Result<(), ProgramError> {
self.drawing_count += 1;
for (idx, panel) in self.panels.as_mut_slice().iter_mut().enumerate() {
let active = idx == self.active_panel_idx;
let panel_skin = if active { &skin.focused } else { &skin.unfocused };
let disc = DisplayContext {
count: self.drawing_count,
active,
screen: self.screen,
panel_skin,
state_area: panel.areas.state.clone(),
app_state,
con,
};
time!(
"display panel",
panel.display(w, &disc)?,
);
}
kitty::manager().lock().unwrap().erase_images_before(w, self.drawing_count)?;
w.flush()?;
Ok(())
}More examples
src/image/image_view.rs (line 109)
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pub fn display(
&mut self,
w: &mut W,
disc: &DisplayContext,
area: &Area,
) -> Result<(), ProgramError> {
let styles = &disc.panel_skin.styles;
let bg = styles.preview.get_bg()
.or_else(|| styles.default.get_bg())
.unwrap_or(Color::AnsiValue(238));
// we avoid drawing when we were just displayed
// on the last drawing_count and the area is the same.
let drawing_info = DrawingInfo {
drawing_count: disc.count,
area: area.clone(),
};
let must_draw = self.last_drawing
.as_ref()
.map_or(true, |previous| !drawing_info.follows_in_place(previous));
if must_draw {
debug!("image_view must be cleared");
} else {
debug!("no need to clear image_view");
}
self.last_drawing = Some(drawing_info);
let mut kitty_manager = kitty::manager().lock().unwrap();
if !must_draw {
if let Some(kitty_image_id) = self.kitty_image_id {
// we tell the manager the images must be kept, otherwise
// they would be erased at end of drawing, as obsolete
kitty_manager.keep(kitty_image_id, disc.count);
}
return Ok(());
}
self.kitty_image_id = kitty_manager
.try_print_image(w, &self.source_img, area, bg, disc.count)?;
if self.kitty_image_id.is_some() {
return Ok(());
}
let target_width = area.width as u32;
let target_height = (area.height * 2) as u32;
let cached = self
.display_img
.as_ref()
.filter(|ci| ci.target_width == target_width && ci.target_height == target_height);
let img = match cached {
Some(ci) => &ci.img,
None => {
let img = time!(
"resize image",
self.source_img.resize(target_width, target_height, FilterType::Triangle),
);
self.display_img = Some(CachedImage {
img,
target_width,
target_height,
});
&self.display_img.as_ref().unwrap().img
}
};
let (width, height) = img.dimensions();
debug!("resized image dimensions: {},{}", width, height);
debug_assert!(width <= area.width as u32);
let mut double_line = DoubleLine::new(width as usize, disc.con.true_colors);
let mut y = area.top;
let img_top_offset = (area.height - (height / 2) as u16) / 2;
for _ in 0..img_top_offset {
w.queue(cursor::MoveTo(area.left, y))?;
fill_bg(w, area.width as usize, bg)?;
y += 1;
}
let margin = area.width as usize - width as usize;
let left_margin = margin / 2;
let right_margin = margin - left_margin;
w.queue(cursor::MoveTo(area.left, y))?;
for pixel in img.pixels() {
double_line.push(pixel.2);
if double_line.is_full() {
double_line.write(w, left_margin, right_margin, bg)?;
y += 1;
w.queue(cursor::MoveTo(area.left, y))?;
}
}
if !double_line.is_empty() {
double_line.write(w, left_margin, right_margin, bg)?;
y += 1;
}
w.queue(SetBackgroundColor(bg))?;
for y in y..area.top + area.height {
w.queue(cursor::MoveTo(area.left, y))?;
fill_bg(w, area.width as usize, bg)?;
}
Ok(())
}