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修复非透明情况仍然会置顶的问题，删除部分代码
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lynnux committed May 28, 2022
1 parent 881ce3f commit 32ece8e
Showing 1 changed file with 64 additions and 73 deletions.
137 changes: 64 additions & 73 deletions src/transparent.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ use winapi::um::winuser::*;
// 查看过release，确实把format!给优化了，没有内存分配
macro_rules! debug_output {
($str:expr) => {
#[cfg(debug_assertions)]
// #[cfg(debug_assertions)]
#[allow(unused_unsafe)]
unsafe {
use winapi::um::debugapi::*;
Expand Down Expand Up @@ -106,33 +106,47 @@ lazy_static! {
static ref SHADOW_WNDOWS: Mutex<HashMap<usize, ShadowDataPtr>> = Mutex::new(HashMap::new());
}
static mut SHADOW_BRUSH: HBRUSH = std::ptr::null_mut();
static mut SHADOW_DISABLED: bool = false;

fn set_window_pos(pthis: &ShadowData, parent: Option<HWND>) {
let x = pthis.xpos.load(Ordering::SeqCst).into();
let y = pthis.ypos.load(Ordering::SeqCst).into();
let w = pthis.width.load(Ordering::SeqCst).into();
let h = pthis.height.load(Ordering::SeqCst).into();

unsafe {
SetWindowPos(
pthis.hwnd as HWND,
HWND_TOPMOST, //std::ptr::null_mut(),//HWND_TOPMOST, //,//HWND_NOTOPMOST,//
x,
y,
w,
h,
//SWP_SHOWWINDOW | SWP_NOACTIVATE,
SWP_SHOWWINDOW | SWP_NOACTIVATE, // | , // SWP_NOSIZE SWP_NOZORDER
);
if let Some(hp) = parent {
if SHADOW_DISABLED {
// 非透明情况下仍然需要更新位置，不然重新透明时窗口会挫位
SetWindowPos(
hp,
HWND_TOPMOST, //HWND_TOP
0,
0,
0,
0,
SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE,
pthis.hwnd as HWND,
std::ptr::null_mut(),
x,
y,
w,
h,
SWP_HIDEWINDOW | SWP_NOACTIVATE,
);
} else {
SetWindowPos(
pthis.hwnd as HWND,
HWND_TOPMOST,
x,
y,
w,
h,
SWP_SHOWWINDOW | SWP_NOACTIVATE, // SWP_NOSIZE SWP_NOZORDER
);
if let Some(hp) = parent {
SetWindowPos(
hp,
HWND_TOPMOST,
0,
0,
0,
0,
SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE,
);
}
}
}
}
Expand Down Expand Up @@ -183,7 +197,7 @@ fn create_shadow_window(hwd_parent: HWND) -> Option<ShadowData> {
org_winproc: 0,
};
set_window_pos(&sd, Some(hwd_parent));
redraw_window(&sd);

return Some(sd);
}
}
Expand All @@ -209,31 +223,17 @@ unsafe extern "system" fn cwndshadow_window_proc(
return DefWindowProcA(hwnd, msg, wparam, lparam);
}

// fn redraw(hdc: HDC, pthis: &ShadowData) {
// unsafe {
// if !SHADOW_BRUSH.is_null() {
// let mut rc: RECT = std::mem::zeroed();
// rc.left = 0;
// rc.top = 0;
// rc.right = pthis.width.load(Ordering::SeqCst) as i32;
// rc.bottom = pthis.height.load(Ordering::SeqCst) as i32;
// FillRect(hdc, &rc, SHADOW_BRUSH as *mut _);
// }
// }
// }
fn redraw_window(_pthis: &ShadowData) {
debug_output!("child redraw_window".to_owned());
return;

// unsafe {
// let hdc = GetDC(pthis.hwnd as HWND);
// if !hdc.is_null() {
// redraw(hdc, &pthis);
// ReleaseDC(pthis.hwnd as HWND, hdc);
// }
// }
fn show_window(hwnd: HWND, show: bool) {
unsafe {
if show {
if !SHADOW_DISABLED {
ShowWindow(hwnd as HWND, SW_SHOWNA);
}
} else {
ShowWindow(hwnd as HWND, SW_HIDE);
}
}
}

extern "system" fn window_proc(hwnd: HWND, msg: u32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
unsafe {
let data;
Expand All @@ -245,7 +245,6 @@ extern "system" fn window_proc(hwnd: HWND, msg: u32, wparam: WPARAM, lparam: LPA
return DefWindowProcW(hwnd, msg, wparam, lparam);
}
}
// debug_output!(format!("message:{}", msg));
let pthis = data;
if msg == WM_MOVE {
let x = LOWORD(lparam as DWORD);
Expand All @@ -267,11 +266,10 @@ extern "system" fn window_proc(hwnd: HWND, msg: u32, wparam: WPARAM, lparam: LPA
pthis.width.store(w, Ordering::SeqCst);
pthis.height.store(h, Ordering::SeqCst);
set_window_pos(&pthis, Some(hwnd));
redraw_window(&pthis);
}
if SIZE_MAXIMIZED == wparam || SIZE_MINIMIZED == wparam {
if SIZE_MINIMIZED == wparam {
ShowWindow(pthis.hwnd as HWND, SW_HIDE);
show_window(pthis.hwnd as HWND, false);
out += " SIZE_MINIMIZED";
} else {
out += " SIZE_MINIMIZED";
Expand All @@ -282,26 +280,21 @@ extern "system" fn window_proc(hwnd: HWND, msg: u32, wparam: WPARAM, lparam: LPA
if msg == WM_SHOWWINDOW {
if wparam == 0 {
debug_output!("WM_SHOWWINDOW SW_HIDE".to_owned());
ShowWindow(pthis.hwnd as HWND, SW_HIDE);
show_window(pthis.hwnd as HWND, false);
} else {
debug_output!("WM_SHOWWINDOW SHOW".to_owned());
ShowWindow(pthis.hwnd as HWND, SW_SHOWNA);
show_window(pthis.hwnd as HWND, true);
}
}
if msg == WM_PAINT {
debug_output!("parent WM_PAINT".to_owned());
// update_shadow_window(pthis.hwnd as HWND);
redraw_window(&pthis);
}
if msg == WM_EXITSIZEMOVE {
redraw_window(&pthis);
}
if msg == WM_SETFOCUS {
debug_output!("WM_SETFOCUS".to_owned());
}
if msg == WM_DESTROY {
debug_output!("WM_DESTROY".to_owned());
ShowWindow(pthis.hwnd as HWND, SW_HIDE);
show_window(pthis.hwnd as HWND, false);
DestroyWindow(pthis.hwnd as HWND);
}
if msg == WM_NCDESTROY {
Expand Down Expand Up @@ -361,7 +354,6 @@ fn get_current_process_wnd() -> Option<Vec<HWND>> {
}
}


fn set_transparent_one_frame(alpha: u8, hwnd: HWND) {
unsafe {
let old_style = GetWindowLongPtrW(hwnd, GWL_EXSTYLE);
Expand All @@ -388,21 +380,19 @@ fn set_background_transparent_one_frame(hwnd: HWND, r: u8, g: u8, b: u8) {
}

fn enable_shadow_windows(enable: bool, alpha: u8) {
unsafe {
let mut temp = Vec::new();
{
let sw = SHADOW_WNDOWS.lock().unwrap();
for (_, s) in sw.iter() {
temp.push(s.hwnd);
}
let mut temp = Vec::new();
{
let sw = SHADOW_WNDOWS.lock().unwrap();
for (_, s) in sw.iter() {
temp.push(s.hwnd);
}
for hwnd in temp {
if enable {
set_transparent_one_frame(alpha, hwnd as HWND);
ShowWindow(hwnd as HWND, SW_SHOWNA);
} else {
ShowWindow(hwnd as HWND, SW_HIDE);
}
}
for hwnd in temp {
if enable {
set_transparent_one_frame(alpha, hwnd as HWND);
show_window(hwnd as HWND, true);
} else {
show_window(hwnd as HWND, false);
}
}
}
Expand Down Expand Up @@ -454,11 +444,12 @@ pub fn set_background(alpha: u8, r: u8, g: u8, b: u8) -> Result<()> {
}
let mut enable = true;
let emacs_windows = get_current_process_wnd();
SHADOW_DISABLED = alpha == 255;
// 先给所有Emacs窗口设置透明颜色
if let Some(hwnd) = &emacs_windows {
for hp in hwnd {
let h = *hp;
if alpha != 255 {
if !SHADOW_DISABLED {
hook_emacs_windproc(h);
set_background_transparent_one_frame(h, r, g, b);
} else {
Expand All @@ -472,7 +463,7 @@ pub fn set_background(alpha: u8, r: u8, g: u8, b: u8) -> Result<()> {
enable_shadow_windows(enable, alpha);

// 再把emacs置顶一下
if alpha != 255{
if !SHADOW_DISABLED {
if let Some(hwnd) = &emacs_windows {
for hp in hwnd {
SetWindowPos(
Expand All @@ -485,7 +476,7 @@ pub fn set_background(alpha: u8, r: u8, g: u8, b: u8) -> Result<()> {
SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE,
);
}
}
}
}
}
Ok(())
Expand Down

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