mirror of
https://github.com/wez/wezterm.git
synced 2024-12-24 05:42:03 +03:00
add theoretical support for storing Images in the Surface
There's basic rendering also, but it is not complete. Needs more tests; will come back to those once more scaffolding is in place.
This commit is contained in:
parent
5d27265b7c
commit
a267ebb576
@ -163,6 +163,11 @@ impl CellAttributes {
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self
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}
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pub fn set_image(&mut self, image: Option<Box<ImageCell>>) -> &mut Self {
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self.image = image;
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self
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}
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/// Clone the attributes, but exclude fancy extras such
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/// as hyperlinks or future sprite things
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pub fn clone_sgr_only(&self) -> Self {
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@ -270,21 +270,21 @@ pub enum ITermProprietary {
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#[derive(Debug, Clone, PartialEq, Eq)]
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pub struct ITermFileData {
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/// file name
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name: Option<String>,
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pub name: Option<String>,
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/// size of the data in bytes; this is used by iterm to show progress
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/// while waiting for the rest of the payload
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size: Option<u64>,
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pub size: Option<usize>,
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/// width to render
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width: ITermDimension,
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pub width: ITermDimension,
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/// height to render
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height: ITermDimension,
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pub height: ITermDimension,
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/// if true, preserve aspect ratio when fitting to width/height
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preserve_aspect_ratio: bool,
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pub preserve_aspect_ratio: bool,
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/// if true, attempt to display in the terminal rather than downloading to
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/// the users download directory
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inline: bool,
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pub inline: bool,
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/// The data to transfer
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data: Vec<u8>,
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pub data: Vec<u8>,
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}
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impl ITermFileData {
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@ -11,15 +11,25 @@
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// protocol appears to track the images out of band as attachments with
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// z-order.
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use failure::Error;
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use image_crate::load_from_memory;
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use ordered_float::NotNaN;
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use std::rc::Rc;
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#[derive(Debug, Clone, PartialEq, Eq)]
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pub struct TextureCoordinate {
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x: NotNaN<f32>,
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y: NotNaN<f32>,
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pub x: NotNaN<f32>,
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pub y: NotNaN<f32>,
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}
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impl TextureCoordinate {
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pub fn new(x: NotNaN<f32>, y: NotNaN<f32>) -> Self {
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Self { x, y }
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}
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pub fn new_f32(x: f32, y: f32) -> Self {
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let x = NotNaN::new(x).unwrap();
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let y = NotNaN::new(y).unwrap();
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Self::new(x, y)
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}
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}
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/// Tracks data for displaying an image in the place of the normal cell
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@ -39,39 +49,34 @@ pub struct ImageCell {
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data: Rc<ImageData>,
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}
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impl ImageCell {
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pub fn new(
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top_left: TextureCoordinate,
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bottom_right: TextureCoordinate,
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data: Rc<ImageData>,
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) -> Self {
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Self {
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top_left,
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bottom_right,
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data,
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}
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}
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}
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static IMAGE_ID: ::std::sync::atomic::AtomicUsize = ::std::sync::atomic::ATOMIC_USIZE_INIT;
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#[derive(Clone, Debug, PartialEq, Eq)]
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pub struct ImageData {
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id: usize,
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/// Width of the image, in pixels
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width: usize,
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/// Height of the image, in pixels,
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height: usize,
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/// The image data bytes. Data is SRGBA, 32 bits per pixel
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/// The image data bytes. Data is the native image file format
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data: Vec<u8>,
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}
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impl ImageData {
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/// Guess the image format from the contained buffer and return the
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/// decoded image data.
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pub fn load_from_memory(buffer: &[u8]) -> Result<ImageData, Error> {
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let img = load_from_memory(buffer)?.to_rgba();
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let width = img.width() as usize;
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let height = img.height() as usize;
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let data = img.into_raw();
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Ok(Self::with_raw_data(width, height, data))
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}
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pub fn with_raw_data(width: usize, height: usize, data: Vec<u8>) -> Self {
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/// Create a new ImageData struct with the provided raw data.
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pub fn with_raw_data(data: Vec<u8>) -> Self {
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let id = IMAGE_ID.fetch_add(1, ::std::sync::atomic::Ordering::Relaxed);
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Self {
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id,
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width,
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height,
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data,
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}
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Self { id, data }
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}
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#[inline]
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@ -83,14 +88,4 @@ impl ImageData {
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pub fn id(&self) -> usize {
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self.id
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}
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#[inline]
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pub fn width(&self) -> usize {
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self.width
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}
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#[inline]
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pub fn height(&self) -> usize {
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self.height
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}
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}
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@ -3,8 +3,9 @@ use caps::{Capabilities, ColorLevel};
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use cell::{AttributeChange, Blink, CellAttributes, Intensity, Underline};
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use color::{ColorAttribute, ColorSpec};
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use escape::csi::{Cursor, Edit, EraseInDisplay, EraseInLine, Sgr, CSI};
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use escape::osc::OperatingSystemCommand;
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use failure;
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use escape::osc::{ITermDimension, ITermFileData, ITermProprietary, OperatingSystemCommand};
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use failure::{self, Error};
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use image::TextureCoordinate;
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use std::io::{Read, Write};
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use surface::{Change, CursorShape, Position};
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use terminal::unix::UnixTty;
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@ -239,6 +240,40 @@ impl TerminfoRenderer {
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Ok(())
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}
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fn cursor_up<W: UnixTty + Write>(&mut self, n: u32, out: &mut W) -> Result<(), Error> {
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if let Some(attr) = self.get_capability::<cap::ParmUpCursor>() {
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attr.expand().count(n).to(out.by_ref())?;
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} else {
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write!(out, "{}", CSI::Cursor(Cursor::Up(n)))?;
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}
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Ok(())
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}
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fn cursor_down<W: UnixTty + Write>(&mut self, n: u32, out: &mut W) -> Result<(), Error> {
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if let Some(attr) = self.get_capability::<cap::ParmDownCursor>() {
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attr.expand().count(n).to(out.by_ref())?;
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} else {
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write!(out, "{}", CSI::Cursor(Cursor::Down(n)))?;
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}
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Ok(())
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}
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fn cursor_left<W: UnixTty + Write>(&mut self, n: u32, out: &mut W) -> Result<(), Error> {
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if let Some(attr) = self.get_capability::<cap::ParmLeftCursor>() {
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attr.expand().count(n).to(out.by_ref())?;
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} else {
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write!(out, "{}", CSI::Cursor(Cursor::Left(n)))?;
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}
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Ok(())
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}
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fn cursor_right<W: UnixTty + Write>(&mut self, n: u32, out: &mut W) -> Result<(), Error> {
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if let Some(attr) = self.get_capability::<cap::ParmRightCursor>() {
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attr.expand().count(n).to(out.by_ref())?;
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} else {
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write!(out, "{}", CSI::Cursor(Cursor::Right(n)))?;
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}
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Ok(())
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}
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}
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impl TerminfoRenderer {
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@ -412,43 +447,31 @@ impl TerminfoRenderer {
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}
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Change::CursorPosition {
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x: Position::NoChange,
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y: Position::Relative(1),
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} => {
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if let Some(attr) = self.get_capability::<cap::CursorDown>() {
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attr.expand().to(out.by_ref())?;
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} else {
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write!(out, "{}", CSI::Cursor(Cursor::Down(1)))?;
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}
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y: Position::Relative(n),
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} if *n > 0 =>
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{
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self.cursor_down(*n as u32, out)?;
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}
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Change::CursorPosition {
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x: Position::NoChange,
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y: Position::Relative(-1),
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} => {
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if let Some(attr) = self.get_capability::<cap::CursorUp>() {
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attr.expand().to(out.by_ref())?;
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} else {
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write!(out, "{}", CSI::Cursor(Cursor::Up(1)))?;
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}
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y: Position::Relative(n),
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} if *n < 0 =>
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{
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self.cursor_up(*n as u32, out)?;
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}
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Change::CursorPosition {
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x: Position::Relative(-1),
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x: Position::Relative(n),
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y: Position::NoChange,
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} => {
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if let Some(attr) = self.get_capability::<cap::CursorLeft>() {
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attr.expand().to(out.by_ref())?;
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} else {
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write!(out, "{}", CSI::Cursor(Cursor::Left(1)))?;
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}
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} if *n < 0 =>
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{
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self.cursor_left(*n as u32, out)?;
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}
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Change::CursorPosition {
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x: Position::Relative(1),
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x: Position::Relative(n),
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y: Position::NoChange,
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} => {
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if let Some(attr) = self.get_capability::<cap::CursorRight>() {
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attr.expand().to(out.by_ref())?;
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} else {
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write!(out, "{}", CSI::Cursor(Cursor::Right(1)))?;
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}
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} if *n > 0 =>
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{
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self.cursor_right(*n as u32, out)?;
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}
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Change::CursorPosition {
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x: Position::Absolute(x),
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@ -512,6 +535,52 @@ impl TerminfoRenderer {
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}
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}
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},
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Change::Image(image) => {
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if self.caps.iterm2_image() {
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let data = if image.top_left == TextureCoordinate::new_f32(0.0, 0.0)
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&& image.bottom_right == TextureCoordinate::new_f32(1.0, 1.0)
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{
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// The whole image is requested, so we can send the
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// original image bytes over
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image.image.data().to_vec()
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} else {
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// TODO: slice out the requested region of the image,
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// and encode as a PNG.
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unimplemented!();
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};
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let file = ITermFileData {
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name: None,
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size: Some(data.len()),
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width: ITermDimension::Cells(image.width as i64),
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height: ITermDimension::Cells(image.height as i64),
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preserve_aspect_ratio: true,
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inline: true,
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data,
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};
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let osc = OperatingSystemCommand::ITermProprietary(ITermProprietary::File(
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Box::new(file),
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));
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write!(out, "{}", osc)?;
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// TODO: } else if self.caps.sixel() {
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} else {
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// Blank out the cells and move the cursor to the right spot
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for y in 0..image.height {
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for _ in 0..image.width {
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write!(out, " ")?;
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}
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if y != image.height - 1 {
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write!(out, "\n")?;
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self.cursor_left(image.width as u32, out)?;
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}
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}
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self.cursor_up(image.height as u32, out)?;
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}
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}
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}
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}
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@ -262,6 +262,24 @@ impl WindowsConsoleRenderer {
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}
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Change::CursorColor(_color) => {}
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Change::CursorShape(_shape) => {}
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Change::Image(image) => {
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// Images are not supported, so just blank out the cells and
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// move the cursor to the right spot
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out.flush()?;
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let info = out.get_buffer_info()?;
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for y in 0..image.height {
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out.fill_char(
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' ',
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info.dwCursorPosition.X,
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y as i16 + info.dwCursorPosition.Y,
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image.width as u32,
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)?;
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}
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out.set_cursor_position(
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info.dwCursorPosition.X + image.width as i16,
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info.dwCursorPosition.Y,
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)?;
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}
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}
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}
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out.flush()?;
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@ -1,5 +1,7 @@
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use cell::{AttributeChange, CellAttributes};
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use color::ColorAttribute;
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pub use image::{ImageData, TextureCoordinate};
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use std::rc::Rc;
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use surface::{CursorShape, Position};
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/// `Change` describes an update operation to be applied to a `Surface`.
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@ -40,6 +42,14 @@ pub enum Change {
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/// Change the cursor shape
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CursorShape(CursorShape),
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/* ChangeScrollRegion{top: usize, bottom: usize}, */
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/// Place an image at the current cursor position.
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/// The image defines the dimensions in cells.
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/// TODO: check iterm rendering behavior when the image is larger than the width of the screen.
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/// If the image is taller than the remaining space at the bottom
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/// of the screen, the screen will scroll up.
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/// The cursor Y position is unchanged by rendering the Image.
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/// The cursor X position will be incremented by `Image::width` cells.
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Image(Image),
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}
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impl Change {
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@ -69,3 +79,29 @@ impl From<AttributeChange> for Change {
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Change::Attribute(c)
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}
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}
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/// The `Image` `Change` needs to support adding an image that spans multiple
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/// rows and columns, as well as model the content for just one of those cells.
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/// For instance, if some of the cells inside an image are replaced by textual
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/// content, and the screen is scrolled, computing the diff change stream needs
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/// to be able to express that a single cell holds a slice from a larger image.
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/// The `Image` struct expresses its dimensions in cells and references a region
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/// in the shared source image data using texture coordinates.
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/// A 4x3 cell image would set `width=3`, `height=3`, `top_left=(0,0)`, `bottom_right=(1,1)`.
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/// The top left cell from that image, if it were to be included in a diff,
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/// would be recorded as `width=1`, `height=1`, `top_left=(0,0)`, `bottom_right=(1/4,1/3)`.
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#[derive(Debug, Clone, Eq, PartialEq)]
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pub struct Image {
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/// measured in cells
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pub width: usize,
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/// measure in cells
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pub height: usize,
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/// Texture coordinate for the top left of this image block.
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/// (0,0) is the top left of the ImageData. (1, 1) is
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/// the bottom right.
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pub top_left: TextureCoordinate,
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/// Texture coordinates for the bottom right of this image block.
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pub bottom_right: TextureCoordinate,
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/// the image data
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pub image: Rc<ImageData>,
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}
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@ -1,5 +1,7 @@
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use cell::{AttributeChange, Cell, CellAttributes};
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use color::ColorAttribute;
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use image::ImageCell;
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use ordered_float::NotNaN;
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use std::borrow::Cow;
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use std::cmp::min;
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use unicode_segmentation::UnicodeSegmentation;
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@ -7,7 +9,7 @@ use unicode_segmentation::UnicodeSegmentation;
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pub mod change;
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pub mod line;
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pub use self::change::Change;
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pub use self::change::{Change, Image, TextureCoordinate};
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pub use self::line::Line;
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/// Position holds 0-based positioning information, where
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@ -178,9 +180,55 @@ impl Surface {
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Change::ClearToEndOfScreen(color) => self.clear_eos(color),
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Change::CursorColor(color) => self.cursor_color = color.clone(),
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Change::CursorShape(shape) => self.cursor_shape = shape.clone(),
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Change::Image(image) => self.add_image(image),
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}
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}
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fn add_image(&mut self, image: &Image) {
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let xsize = (image.bottom_right.x - image.top_left.x) / image.width as f32;
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let ysize = (image.bottom_right.y - image.top_left.y) / image.height as f32;
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if self.ypos + image.height > self.height {
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let scroll = (self.ypos + image.height) - self.height;
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for _ in 0..scroll {
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self.scroll_screen_up();
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}
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self.ypos -= scroll;
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}
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let mut ypos = NotNaN::new(0.0).unwrap();
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for y in 0..image.height {
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let mut xpos = NotNaN::new(0.0).unwrap();
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for x in 0..image.width {
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self.lines[self.ypos + y].set_cell(
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self.xpos + x,
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Cell::new(
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' ',
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self.attributes
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.clone()
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.set_image(Some(Box::new(ImageCell::new(
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TextureCoordinate::new(
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image.top_left.x + xpos,
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image.top_left.y + ypos,
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),
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TextureCoordinate::new(
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image.top_left.x + xpos + xsize,
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image.top_left.y + ypos + ysize,
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),
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image.image.clone(),
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))))
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.clone(),
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),
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);
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xpos += xsize;
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}
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ypos += ysize;
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}
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self.xpos += image.width;
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}
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fn clear_screen(&mut self, color: &ColorAttribute) {
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self.attributes = CellAttributes::default()
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.set_background(color.clone())
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@ -699,6 +747,8 @@ mod test {
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use super::*;
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use cell::Intensity;
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use color::AnsiColor;
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use image::ImageData;
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use std::rc::Rc;
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// The \x20's look a little awkward, but we can't use a plain
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// space in the first chararcter of a multi-line continuation;
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@ -1356,4 +1406,136 @@ mod test {
|
||||
s.add_change("A\u{200b}B");
|
||||
assert_eq!(s.screen_chars_to_string(), "A\u{200b}B \n");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn images() {
|
||||
// a dummy image blob with nonsense content
|
||||
let data = Rc::new(ImageData::with_raw_data(0, 0, vec![]));
|
||||
let mut s = Surface::new(2, 2);
|
||||
s.add_change(Change::Image(Image {
|
||||
top_left: TextureCoordinate::new_f32(0.0, 0.0),
|
||||
bottom_right: TextureCoordinate::new_f32(1.0, 1.0),
|
||||
image: data.clone(),
|
||||
width: 4,
|
||||
height: 2,
|
||||
}));
|
||||
|
||||
// We're checking that we slice the image up and assign the correct
|
||||
// texture coordinates for each cell. The width and height are
|
||||
// different from each other to help ensure that the right terms
|
||||
// are used by add_image() function.
|
||||
assert_eq!(
|
||||
s.screen_cells(),
|
||||
[
|
||||
[
|
||||
Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.0, 0.0),
|
||||
TextureCoordinate::new_f32(0.25, 0.5),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),
|
||||
Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.25, 0.0),
|
||||
TextureCoordinate::new_f32(0.5, 0.5),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),
|
||||
Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.5, 0.0),
|
||||
TextureCoordinate::new_f32(0.75, 0.5),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),
|
||||
Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.75, 0.0),
|
||||
TextureCoordinate::new_f32(1.0, 0.5),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),
|
||||
],
|
||||
[
|
||||
Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.0, 0.5),
|
||||
TextureCoordinate::new_f32(0.25, 1.0),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),
|
||||
Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.25, 0.5),
|
||||
TextureCoordinate::new_f32(0.5, 1.0),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),
|
||||
Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.5, 0.5),
|
||||
TextureCoordinate::new_f32(0.75, 1.0),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),
|
||||
Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.75, 0.5),
|
||||
TextureCoordinate::new_f32(1.0, 1.0),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),
|
||||
],
|
||||
]
|
||||
);
|
||||
|
||||
// Check that starting at not the texture origin coordinates
|
||||
// gives reasonable values in the resultant cell
|
||||
let mut other = Surface::new(1, 1);
|
||||
other.add_change(Change::Image(Image {
|
||||
top_left: TextureCoordinate::new_f32(0.25, 0.3),
|
||||
bottom_right: TextureCoordinate::new_f32(0.75, 0.8),
|
||||
image: data.clone(),
|
||||
width: 1,
|
||||
height: 1,
|
||||
}));
|
||||
assert_eq!(
|
||||
other.screen_cells(),
|
||||
[[Cell::new(
|
||||
' ',
|
||||
CellAttributes::default()
|
||||
.set_image(Some(Box::new(ImageCell::new(
|
||||
TextureCoordinate::new_f32(0.25, 0.3),
|
||||
TextureCoordinate::new_f32(0.75, 0.8),
|
||||
data.clone()
|
||||
))))
|
||||
.clone()
|
||||
),]]
|
||||
);
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user