138 lines
3.8 KiB
Rust
138 lines
3.8 KiB
Rust
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use std::sync::{Arc, Mutex};
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use crate::host::traits::{WindowUpdater, BlitableSurface};
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pub const MASK_COLOUR: u32 = 0xFFFFFFFF;
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#[derive(Clone)]
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pub struct Frame {
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pub width: u32,
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pub height: u32,
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pub bitmap: Vec<u32>,
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}
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impl Frame {
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pub fn new(width: u32, height: u32) -> Self {
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Self { width, height, bitmap: vec![0; (width * height) as usize] }
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}
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pub fn new_shared(width: u32, height: u32) -> Arc<Mutex<Frame>> {
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Arc::new(Mutex::new(Frame::new(width, height)))
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}
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pub fn new_updater(frame: Arc<Mutex<Frame>>) -> Box<dyn WindowUpdater> {
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Box::new(FrameUpdateWrapper(frame))
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}
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}
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impl BlitableSurface for Frame {
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fn set_size(&mut self, width: u32, height: u32) {
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self.width = width;
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self.height = height;
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self.bitmap.resize((width * height) as usize, 0);
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}
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fn set_pixel(&mut self, pos_x: u32, pos_y: u32, pixel: u32) {
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match pixel {
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MASK_COLOUR => { },
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value if pos_x < self.width && pos_y < self.height => {
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self.bitmap[(pos_x + (pos_y * self.width)) as usize] = value;
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},
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_ => { },
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}
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}
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fn blit<B: Iterator<Item=u32>>(&mut self, pos_x: u32, pos_y: u32, mut bitmap: B, width: u32, height: u32) {
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for y in pos_y..(pos_y + height) {
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for x in pos_x..(pos_x + width) {
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match bitmap.next().unwrap() {
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MASK_COLOUR => { },
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value if x < self.width && y < self.height => { self.bitmap[(x + (y * self.width)) as usize] = value; },
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_ => { },
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}
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}
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}
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}
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fn clear(&mut self, value: u32) {
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let value = if value == MASK_COLOUR { 0 } else { value };
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for i in 0..((self.width as usize) * (self.height as usize)) {
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self.bitmap[i] = value;
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}
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}
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}
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pub struct FrameUpdateWrapper(Arc<Mutex<Frame>>);
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impl WindowUpdater for FrameUpdateWrapper {
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fn get_size(&mut self) -> (u32, u32) {
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match self.0.lock() {
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Ok(frame) => (frame.width, frame.height),
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_ => (0, 0),
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}
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}
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fn update_frame(&mut self, width: u32, _height: u32, bitmap: &mut [u32]) {
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if let Ok(frame) = self.0.lock() {
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for y in 0..frame.height {
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for x in 0..frame.width {
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bitmap[(x + (y * width)) as usize] = frame.bitmap[(x + (y * frame.width)) as usize];
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}
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}
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}
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}
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}
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#[derive(Clone)]
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pub struct FrameSwapper {
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pub current: Arc<Mutex<Frame>>,
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pub previous: Arc<Mutex<Frame>>,
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}
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impl FrameSwapper {
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pub fn new(width: u32, height: u32) -> FrameSwapper {
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FrameSwapper {
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current: Arc::new(Mutex::new(Frame::new(width, height))),
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previous: Arc::new(Mutex::new(Frame::new(width, height))),
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}
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}
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pub fn to_boxed(swapper: FrameSwapper) -> Box<dyn WindowUpdater> {
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Box::new(swapper)
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}
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pub fn swap(&mut self) {
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std::mem::swap(&mut self.current.lock().unwrap().bitmap, &mut self.previous.lock().unwrap().bitmap);
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}
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pub fn set_size(&mut self, width: u32, height: u32) {
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self.previous.lock().unwrap().set_size(width, height);
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self.current.lock().unwrap().set_size(width, height);
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}
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}
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impl WindowUpdater for FrameSwapper {
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fn get_size(&mut self) -> (u32, u32) {
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if let Ok(frame) = self.current.lock() {
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(frame.width, frame.height)
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} else {
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(0, 0)
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}
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}
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fn update_frame(&mut self, width: u32, _height: u32, bitmap: &mut [u32]) {
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if let Ok(frame) = self.previous.lock() {
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for y in 0..frame.height {
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for x in 0..frame.width {
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bitmap[(x + (y * width)) as usize] = frame.bitmap[(x + (y * frame.width)) as usize];
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}
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}
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}
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}
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}
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