display-ambient-light/desktop
1
0
Fork 0
Code Issues 1 Pull Requests Packages Projects 1 Releases Wiki Activity

feat: GUI 控制的，LED 灯条颜色预览。

Browse Source
This commit is contained in:
Ivan Li
2023-03-26 10:48:50 +08:00
parent 3ede04c31b
commit 1a3102257e
23 changed files with 1067 additions and 192 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
src-tauri/src/screenshot_manager.rs
View File

@ -1,6 +1,5 @@
use std::{collections::HashMap, sync::Arc};
use base64::Engine;
use core_graphics::display::{
kCGNullWindowID, kCGWindowImageDefault, kCGWindowListOptionOnScreenOnly, CGDisplay,
};
@ -8,7 +7,7 @@ use paris::{error, info, warn};
use tauri::{async_runtime::RwLock, Window};
use tokio::sync::{watch, OnceCell};
use crate::screenshot::{Screenshot, ScreenshotPayload};
use crate::screenshot::{Screenshot, ScreenshotPayload, ScreenSamplePoints};
pub fn take_screenshot(display_id: u32, scale_factor: f32) -> anyhow::Result<Screenshot> {
log::debug!("take_screenshot");
@ -40,6 +39,7 @@ pub fn take_screenshot(display_id: u32, scale_factor: f32) -> anyhow::Result<Scr
bytes_per_row,
bytes,
scale_factor,
ScreenSamplePoints { top: vec![], bottom: vec![], left: vec![], right: vec![] }
))
}
@ -205,48 +205,4 @@ impl ScreenshotManager {
}
}
async fn encode_screenshot_to_base64(screenshot: &Screenshot) -> anyhow::Result<String> {
let bytes = screenshot.bytes.read().await;
let scale_factor = screenshot.scale_factor;
let image_height = (screenshot.height as f32 / scale_factor) as u32;
let image_width = (screenshot.width as f32 / scale_factor) as u32;
let mut image_buffer = vec![0u8; (image_width * image_height * 3) as usize];
for y in 0..image_height {
for x in 0..image_width {
let offset = (((y as f32) * screenshot.bytes_per_row as f32 + (x as f32) * 4.0)
* scale_factor) as usize;
let b = bytes[offset];
let g = bytes[offset + 1];
let r = bytes[offset + 2];
let offset = (y * image_width + x) as usize;
image_buffer[offset * 3] = r;
image_buffer[offset * 3 + 1] = g;
image_buffer[offset * 3 + 2] = b;
}
}
let mut image_png = Vec::new();
let mut encoder = png::Encoder::new(&mut image_png, image_width, image_height);
encoder.set_color(png::ColorType::Rgb);
encoder.set_depth(png::BitDepth::Eight);
let mut writer = encoder
.write_header()
.map_err(|e| anyhow::anyhow!("png: {}", anyhow::anyhow!(e.to_string())))?;
writer
.write_image_data(&image_buffer)
.map_err(|e| anyhow::anyhow!("png: {}", anyhow::anyhow!(e.to_string())))?;
writer
.finish()
.map_err(|e| anyhow::anyhow!("png: {}", anyhow::anyhow!(e.to_string())))?;
let mut base64_image = String::new();
base64_image.push_str("data:image/webp;base64,");
let encoded = base64::engine::general_purpose::STANDARD_NO_PAD.encode(&*image_png);
base64_image.push_str(encoded.as_str());
Ok(base64_image)
}
}