Jacob Lorentzon
328 lines
11 KiB
Rust
328 lines
11 KiB
Rust
extern crate ransid;
|
|
|
|
use std::collections::{BTreeSet, VecDeque};
|
|
use std::convert::{TryFrom, TryInto};
|
|
use std::os::fd::AsRawFd;
|
|
use std::{cmp, ptr};
|
|
|
|
use orbclient::{Event, EventOption, FONT};
|
|
use syscall::error::*;
|
|
|
|
use crate::display::{Display, SyncRect};
|
|
|
|
pub struct TextScreen {
|
|
console: ransid::Console,
|
|
pub display: Display,
|
|
changed: BTreeSet<usize>,
|
|
ctrl: bool,
|
|
input: VecDeque<u8>,
|
|
}
|
|
|
|
impl TextScreen {
|
|
pub fn new(display: Display) -> TextScreen {
|
|
TextScreen {
|
|
console: ransid::Console::new(display.width / 8, display.height / 16),
|
|
display,
|
|
changed: BTreeSet::new(),
|
|
ctrl: false,
|
|
input: VecDeque::new(),
|
|
}
|
|
}
|
|
|
|
/// Draw a rectangle
|
|
fn rect(display: &mut Display, x: usize, y: usize, w: usize, h: usize, color: u32) {
|
|
let start_y = cmp::min(display.height, y);
|
|
let end_y = cmp::min(display.height, y + h);
|
|
|
|
let start_x = cmp::min(display.width, x);
|
|
let len = cmp::min(display.width, x + w) - start_x;
|
|
|
|
let mut offscreen_ptr = display.offscreen as *mut u8 as usize;
|
|
|
|
let stride = display.width * 4;
|
|
|
|
let offset = y * stride + start_x * 4;
|
|
offscreen_ptr += offset;
|
|
|
|
let mut rows = end_y - start_y;
|
|
while rows > 0 {
|
|
for i in 0..len {
|
|
unsafe {
|
|
*(offscreen_ptr as *mut u32).add(i) = color;
|
|
}
|
|
}
|
|
offscreen_ptr += stride;
|
|
rows -= 1;
|
|
}
|
|
}
|
|
|
|
/// Invert a rectangle
|
|
fn invert(display: &mut Display, x: usize, y: usize, w: usize, h: usize) {
|
|
let start_y = cmp::min(display.height, y);
|
|
let end_y = cmp::min(display.height, y + h);
|
|
|
|
let start_x = cmp::min(display.width, x);
|
|
let len = cmp::min(display.width, x + w) - start_x;
|
|
|
|
let mut offscreen_ptr = display.offscreen as *mut u8 as usize;
|
|
|
|
let stride = display.width * 4;
|
|
|
|
let offset = y * stride + start_x * 4;
|
|
offscreen_ptr += offset;
|
|
|
|
let mut rows = end_y - start_y;
|
|
while rows > 0 {
|
|
let mut row_ptr = offscreen_ptr;
|
|
let mut cols = len;
|
|
while cols > 0 {
|
|
unsafe {
|
|
let color = *(row_ptr as *mut u32);
|
|
*(row_ptr as *mut u32) = !color;
|
|
}
|
|
row_ptr += 4;
|
|
cols -= 1;
|
|
}
|
|
offscreen_ptr += stride;
|
|
rows -= 1;
|
|
}
|
|
}
|
|
|
|
/// Draw a character
|
|
fn char(
|
|
display: &mut Display,
|
|
x: usize,
|
|
y: usize,
|
|
character: char,
|
|
color: u32,
|
|
_bold: bool,
|
|
_italic: bool,
|
|
) {
|
|
if x + 8 <= display.width && y + 16 <= display.height {
|
|
let mut dst = display.offscreen as *mut u8 as usize + (y * display.width + x) * 4;
|
|
|
|
let font_i = 16 * (character as usize);
|
|
if font_i + 16 <= FONT.len() {
|
|
for row in 0..16 {
|
|
let row_data = FONT[font_i + row];
|
|
for col in 0..8 {
|
|
if (row_data >> (7 - col)) & 1 == 1 {
|
|
unsafe {
|
|
*((dst + col * 4) as *mut u32) = color;
|
|
}
|
|
}
|
|
}
|
|
dst += display.width * 4;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn resize(&mut self, width: usize, height: usize) {
|
|
self.display
|
|
.resize(width.try_into().unwrap(), height.try_into().unwrap());
|
|
self.console.state.w = width / 8;
|
|
self.console.state.h = height / 16;
|
|
}
|
|
|
|
pub fn input(&mut self, event: &Event) {
|
|
let mut buf = vec![];
|
|
|
|
match event.to_option() {
|
|
EventOption::Key(key_event) => {
|
|
if key_event.scancode == 0x1D {
|
|
self.ctrl = key_event.pressed;
|
|
} else if key_event.pressed {
|
|
match key_event.scancode {
|
|
0x0E => {
|
|
// Backspace
|
|
buf.extend_from_slice(b"\x7F");
|
|
}
|
|
0x47 => {
|
|
// Home
|
|
buf.extend_from_slice(b"\x1B[H");
|
|
}
|
|
0x48 => {
|
|
// Up
|
|
buf.extend_from_slice(b"\x1B[A");
|
|
}
|
|
0x49 => {
|
|
// Page up
|
|
buf.extend_from_slice(b"\x1B[5~");
|
|
}
|
|
0x4B => {
|
|
// Left
|
|
buf.extend_from_slice(b"\x1B[D");
|
|
}
|
|
0x4D => {
|
|
// Right
|
|
buf.extend_from_slice(b"\x1B[C");
|
|
}
|
|
0x4F => {
|
|
// End
|
|
buf.extend_from_slice(b"\x1B[F");
|
|
}
|
|
0x50 => {
|
|
// Down
|
|
buf.extend_from_slice(b"\x1B[B");
|
|
}
|
|
0x51 => {
|
|
// Page down
|
|
buf.extend_from_slice(b"\x1B[6~");
|
|
}
|
|
0x52 => {
|
|
// Insert
|
|
buf.extend_from_slice(b"\x1B[2~");
|
|
}
|
|
0x53 => {
|
|
// Delete
|
|
buf.extend_from_slice(b"\x1B[3~");
|
|
}
|
|
_ => {
|
|
let c = match key_event.character {
|
|
c @ 'A'..='Z' if self.ctrl => ((c as u8 - b'A') + b'\x01') as char,
|
|
c @ 'a'..='z' if self.ctrl => ((c as u8 - b'a') + b'\x01') as char,
|
|
c => c,
|
|
};
|
|
|
|
if c != '\0' {
|
|
let mut b = [0; 4];
|
|
buf.extend_from_slice(c.encode_utf8(&mut b).as_bytes());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
_ => (), //TODO: Mouse in terminal
|
|
}
|
|
|
|
for &b in buf.iter() {
|
|
self.input.push_back(b);
|
|
}
|
|
}
|
|
|
|
pub fn can_read(&self) -> Option<usize> {
|
|
if self.input.is_empty() {
|
|
None
|
|
} else {
|
|
Some(self.input.len())
|
|
}
|
|
}
|
|
}
|
|
|
|
impl TextScreen {
|
|
pub fn read(&mut self, buf: &mut [u8]) -> Result<usize> {
|
|
let mut i = 0;
|
|
|
|
while i < buf.len() && !self.input.is_empty() {
|
|
buf[i] = self.input.pop_front().unwrap();
|
|
i += 1;
|
|
}
|
|
|
|
Ok(i)
|
|
}
|
|
|
|
pub fn write(&mut self, buf: &[u8]) -> Result<usize> {
|
|
if self.console.state.cursor
|
|
&& self.console.state.x < self.console.state.w
|
|
&& self.console.state.y < self.console.state.h
|
|
{
|
|
let x = self.console.state.x;
|
|
let y = self.console.state.y;
|
|
Self::invert(&mut self.display, x * 8, y * 16, 8, 16);
|
|
self.changed.insert(y);
|
|
}
|
|
|
|
{
|
|
let display = &mut self.display;
|
|
let changed = &mut self.changed;
|
|
let input = &mut self.input;
|
|
self.console.write(buf, |event| match event {
|
|
ransid::Event::Char {
|
|
x,
|
|
y,
|
|
c,
|
|
color,
|
|
bold,
|
|
..
|
|
} => {
|
|
Self::char(display, x * 8, y * 16, c, color.as_rgb(), bold, false);
|
|
changed.insert(y);
|
|
}
|
|
ransid::Event::Input { data } => {
|
|
input.extend(data);
|
|
}
|
|
ransid::Event::Rect { x, y, w, h, color } => {
|
|
Self::rect(display, x * 8, y * 16, w * 8, h * 16, color.as_rgb());
|
|
for y2 in y..y + h {
|
|
changed.insert(y2);
|
|
}
|
|
}
|
|
ransid::Event::ScreenBuffer { .. } => (),
|
|
ransid::Event::Move {
|
|
from_x,
|
|
from_y,
|
|
to_x,
|
|
to_y,
|
|
w,
|
|
h,
|
|
} => {
|
|
let width = display.width;
|
|
let pixels = unsafe { &mut *display.offscreen };
|
|
|
|
for raw_y in 0..h {
|
|
let y = if from_y > to_y { raw_y } else { h - raw_y - 1 };
|
|
|
|
for pixel_y in 0..16 {
|
|
{
|
|
let off_from = ((from_y + y) * 16 + pixel_y) * width + from_x * 8;
|
|
let off_to = ((to_y + y) * 16 + pixel_y) * width + to_x * 8;
|
|
let len = w * 8;
|
|
|
|
if off_from + len <= pixels.len() && off_to + len <= pixels.len() {
|
|
unsafe {
|
|
let data_ptr = pixels.as_mut_ptr() as *mut u32;
|
|
ptr::copy(
|
|
data_ptr.offset(off_from as isize),
|
|
data_ptr.offset(off_to as isize),
|
|
len,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
changed.insert(to_y + y);
|
|
}
|
|
}
|
|
ransid::Event::Resize { .. } => (),
|
|
ransid::Event::Title { .. } => (),
|
|
});
|
|
}
|
|
|
|
if self.console.state.cursor
|
|
&& self.console.state.x < self.console.state.w
|
|
&& self.console.state.y < self.console.state.h
|
|
{
|
|
let x = self.console.state.x;
|
|
let y = self.console.state.y;
|
|
Self::invert(&mut self.display, x * 8, y * 16, 8, 16);
|
|
self.changed.insert(y);
|
|
}
|
|
|
|
let width = self.display.width.try_into().unwrap();
|
|
for &change in self.changed.iter() {
|
|
self.display.sync_rect(SyncRect {
|
|
x: 0,
|
|
y: i32::try_from(change).unwrap() * 16,
|
|
w: width,
|
|
h: 16,
|
|
})?;
|
|
}
|
|
self.changed.clear();
|
|
libredox::call::fsync(self.display.display_file.as_raw_fd().as_raw_fd() as usize)?;
|
|
|
|
Ok(buf.len())
|
|
}
|
|
}
|