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Don't redraw static frame

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This commit is contained in:
Jonathan Turner 2019-07-14 19:54:30 +12:00
parent a3f628427f
commit 1a36f47bcb
1 changed files with 19 additions and 8 deletions
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27
src/plugins/binaryview.rs
View File

@ -55,7 +55,8 @@ fn view_binary(b: &[u8]) -> Result<(), Box<dyn std::error::Error>> {
pub struct Context {
pub width: usize,
pub height: usize,
pub frame_buffer: Vec<(char, (u8, u8, u8))>,
pub frame_buffer: Vec<(u8, u8, u8)>,
pub prev_frame_buffer: Option<Vec<(u8, u8, u8)>>,
pub since_last_button: Vec<usize>,
}
@ -65,16 +66,24 @@ impl Context {
width: 0,
height: 0,
frame_buffer: vec![],
prev_frame_buffer: None,
since_last_button: vec![0; 8],
}
}
pub fn clear(&mut self) {
self.frame_buffer = vec![(' ', (0, 0, 0)); self.width * self.height as usize];
self.frame_buffer = vec![(0, 0, 0); self.width * self.height as usize];
}
pub fn flush(&self) -> Result<(), Box<dyn std::error::Error>> {
pub fn flush(&mut self) -> Result<(), Box<dyn std::error::Error>> {
let cursor = cursor();
cursor.goto(0, 0)?;
// check if we should redraw
if let Some(ref prev) = self.prev_frame_buffer {
if self.frame_buffer == *prev {
return Ok(());
}
}
let mut prev_fg: Option<(u8, u8, u8)> = None;
let mut prev_bg: Option<(u8, u8, u8)> = None;
let mut prev_count = 1;
@ -82,8 +91,8 @@ impl Context {
let mut pos = 0;
let fb_len = self.frame_buffer.len();
while pos < (fb_len - self.width) {
let top_pixel = self.frame_buffer[pos].1;
let bottom_pixel = self.frame_buffer[pos + self.width].1;
let top_pixel = self.frame_buffer[pos];
let bottom_pixel = self.frame_buffer[pos + self.width];
match (prev_fg, prev_bg) {
(Some(c), Some(d)) if c == top_pixel && d == bottom_pixel => {
@ -124,6 +133,8 @@ impl Context {
_ => {}
}
}
self.prev_frame_buffer = Some(self.frame_buffer.clone());
/*
for pixel in &self.frame_buffer {
match prev_color {
@ -262,7 +273,7 @@ pub fn view_contents(buffer: &[u8]) -> Result<(), Box<dyn std::error::Error>> {
use image::Pixel;
let rgb = pixel.to_rgb();
//print!("{}", rgb[0]);
context.frame_buffer[count] = ('@', (rgb[0], rgb[1], rgb[2]));
context.frame_buffer[count] = (rgb[0], rgb[1], rgb[2]);
count += 1;
}
}
@ -286,7 +297,7 @@ pub fn view_contents(buffer: &[u8]) -> Result<(), Box<dyn std::error::Error>> {
use image::Pixel;
let rgb = pixel.to_rgb();
//print!("{}", rgb[0]);
context.frame_buffer[count] = ('@', (rgb[0], rgb[1], rgb[2]));
context.frame_buffer[count] = (rgb[0], rgb[1], rgb[2]);
count += 1;
}
}
@ -359,7 +370,7 @@ pub fn view_contents_interactive(buffer: &[u8]) -> Result<(), Box<dyn std::error
use image::Pixel;
let rgb = pixel.to_rgb();
context.frame_buffer[count] = ('@', (rgb[0], rgb[1], rgb[2]));
context.frame_buffer[count] = (rgb[0], rgb[1], rgb[2]);
count += 1;
}
context.flush()?;