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unix: replaced scale functions with macro and added missing invocations (#79)

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This commit is contained in:
Johannes Stölp 2019-08-23 07:26:14 +02:00 committed by Daniel Collin
parent 85459c8b43
commit e20257db79
1 changed files with 47 additions and 42 deletions
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89
src/os/unix/mod.rs
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@ -625,6 +625,18 @@ impl Window {
self.scale_4x(buffer);
}
8 => {
self.scale_8x(buffer);
}
16 => {
self.scale_16x(buffer);
}
32 => {
self.scale_32x(buffer);
}
_ => {
panic!("bad scale for raw_blit_buffer()");
}
@ -645,48 +657,6 @@ impl Window {
(self.d.lib.XFlush)(self.d.display);
}
unsafe fn scale_2x(&mut self, buffer: &[u32]) {
let w = self.width as usize;
let bw = (self.width as usize) / 2;
let bh = (self.height as usize) / 2;
for y in 0..bh {
let src = &buffer[y * bw..y * bw + bw];
for dy in 0..2 {
let dest = &mut self.draw_buffer[(y * 2 + dy) * w..(y * 2 + dy) * w + w];
for x in 0..bw {
dest[x * 2] = src[x];
dest[x * 2 + 1] = src[x];
}
}
}
}
unsafe fn scale_4x(&mut self, buffer: &[u32]) {
let w = self.width as usize;
let bw = (self.width as usize) / 4;
let bh = (self.height as usize) / 4;
for y in 0..bh {
let src = &buffer[y * bw..y * bw + bw];
for dy in 0..4 {
let dest = &mut self.draw_buffer[(y * 4 + dy) * w..(y * 4 + dy) * w + w];
for x in 0..bw {
dest[x * 4] = src[x];
dest[x * 4 + 1] = src[x];
dest[x * 4 + 2] = src[x];
dest[x * 4 + 3] = src[x];
}
}
}
}
unsafe fn raw_get_mouse_pos(&mut self) {
let mut root: xlib::Window = 0;
let mut root_x: i32 = 0;
@ -997,6 +967,41 @@ impl Window {
}
}
// macro_rules inside impl {} blocks currently not supported
// https://github.com/rust-lang/rust/issues/37205
macro_rules! gen_scale_x(
($($fn_name:ident, $x:expr),+$(,)?) => (
impl Window {
$(unsafe fn $fn_name(&mut self, buffer : &[u32]) {
let w = self.width as usize;
let bw = (self.width as usize) / $x;
let bh = (self.height as usize) / $x;
for y in 0..bh {
let src = &buffer[y * bw..y * bw + bw];
for dy in 0..$x {
let dest = &mut self.draw_buffer[(y * $x + dy) * w..(y * $x + dy) * w + w];
for x in 0..bw {
dest[x * $x .. x * $x + $x].copy_from_slice(&[src[x]; $x]);
}
}
}
})+
}
)
);
gen_scale_x!(
scale_2x, 2,
scale_4x, 4,
scale_8x, 8,
scale_16x, 16,
scale_32x, 32,
);
impl Drop for Window {
fn drop(&mut self) {
unsafe {