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最大化shadow初始化最下面有些挫位的bug修复失败，就那样吧
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lynnux committed May 28, 2022
1 parent 97caa1c commit 84af741
Showing 1 changed file with 63 additions and 56 deletions.
119 changes: 63 additions & 56 deletions src/transparent.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,6 @@ use std::sync::Arc;
use std::sync::Mutex;
use winapi::shared::ntdef::NULL;
use winapi::shared::winerror::ERROR_SUCCESS;
use winapi::um::debugapi::*;
use winapi::um::errhandlingapi::GetLastError;
use winapi::um::errhandlingapi::SetLastError;
use winapi::um::libloaderapi::*;
Expand All @@ -16,10 +15,31 @@ use std::sync::atomic::Ordering;
use winapi::shared::basetsd::LONG_PTR;
use winapi::shared::minwindef::*;
use winapi::shared::windef::*;
use winapi::um::processthreadsapi::*;
use winapi::um::wingdi::RGB;
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)]
#[allow(unused_unsafe)]
unsafe {
use winapi::um::debugapi::*;
use winapi::um::processthreadsapi::*;
$str.insert_str(
0,
&format!(
"pid:{}, tid:{} ",
GetCurrentProcessId(),
GetCurrentThreadId()
),
);
let s = to_wstring(&$str);
OutputDebugStringW(s.as_ptr() as *const _);
}
};
}

// https://github.com/duilib/duilib/blob/bbc817e0a134cda1dc5be6a38864257649273095/DuiLib/Utils/WndShadow.cpp#L197-L307
// msdn: https://docs.microsoft.com/en-us/windows/win32/winmsg/window-features
pub fn transparent_init() {
Expand All @@ -42,7 +62,7 @@ pub fn transparent_init() {
if RegisterClassExW(&wc) == 0 {
#[cfg(debug_assertions)]
{
OutputDebugStringA(b"RegisterClassEx failed\0".as_ptr() as *const _);
//OutputDebugStringA(b"RegisterClassEx failed\0".as_ptr() as *const _);
}
}
}
Expand Down Expand Up @@ -119,7 +139,7 @@ fn set_window_pos(pthis: &ShadowData, parent: Option<HWND>) {

fn create_shadow_window(hwd_parent: HWND) -> Option<ShadowData> {
unsafe {
debug_output("create_shadow_window".to_owned());
debug_output!("create_shadow_window".to_owned());
let cls_name = to_wstring("EmacsShadowWindow");
let wnd_name = to_wstring("EmacsShadowWindowName");
let m_h_wnd = CreateWindowExW(
Expand All @@ -139,19 +159,21 @@ fn create_shadow_window(hwd_parent: HWND) -> Option<ShadowData> {
);

if m_h_wnd.is_null() {
debug_output(format!(
debug_output!(format!(
"create_shadow_window CreateWindowExA failed! LastError:{}",
GetLastError()
));
return None;
}

let mut rc: RECT = std::mem::zeroed();
GetWindowRect(hwd_parent, &mut rc as *mut _);
GetWindowRect(hwd_parent, &mut rc as *mut _); // 最大化shadow初始化最下面有些挫位，影响不大
// MapWindowPoints(HWND_DESKTOP, hwd_parent, &mut rc as *mut _ as *mut _, 2);
let x = rc.left;
let y = rc.top;
let w = rc.right - rc.left;
let h = rc.bottom - rc.top;
debug_output!(format!("init rect: x:{}, y: {}, w:{}, h:{}", x, y, w, h));
let sd = ShadowData {
hwnd: m_h_wnd as usize,
width: AtomicU16::new((w).try_into().unwrap_or(0)),
Expand All @@ -176,7 +198,7 @@ unsafe extern "system" fn cwndshadow_window_proc(
return MA_NOACTIVATE as LRESULT;
};
if msg == WM_PAINT {
debug_output("child WM_PAINT".to_owned());
debug_output!("child WM_PAINT".to_owned());
if !SHADOW_BRUSH.is_null() {
let mut ps: PAINTSTRUCT = std::mem::zeroed();
let hdc = BeginPaint(hwnd, &mut ps as *mut _);
Expand All @@ -187,28 +209,29 @@ 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) {
// 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;
debug_output("child redraw_window".to_owned());
unsafe {
let hdc = GetDC(pthis.hwnd as HWND);
if !hdc.is_null() {
redraw(hdc, &pthis);
ReleaseDC(pthis.hwnd as HWND, hdc);
}
}

// unsafe {
// let hdc = GetDC(pthis.hwnd as HWND);
// if !hdc.is_null() {
// redraw(hdc, &pthis);
// ReleaseDC(pthis.hwnd as HWND, hdc);
// }
// }
}

extern "system" fn window_proc(hwnd: HWND, msg: u32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
Expand All @@ -222,19 +245,18 @@ extern "system" fn window_proc(hwnd: HWND, msg: u32, wparam: WPARAM, lparam: LPA
return DefWindowProcW(hwnd, msg, wparam, lparam);
}
}
// debug_output(format!("message:{}", msg));
// debug_output!(format!("message:{}", msg));
let pthis = data;
if msg == WM_MOVE {
let x = LOWORD(lparam as DWORD);
let y = HIWORD(lparam as DWORD);
debug_output(format!("WM_MOVE, x:{}, y:{}", x, y));
debug_output!(format!("WM_MOVE, x:{}, y:{}", x, y));
pthis.xpos.store(x, Ordering::SeqCst);
pthis.ypos.store(y, Ordering::SeqCst);
set_window_pos(&pthis, Some(hwnd));
// ShowWindow(pthis.hwnd as HWND, SW_SHOWNA);
}
if msg == WM_ERASEBKGND {
// debug_output("WM_ERASEBKGND".to_owned());
// debug_output!("WM_ERASEBKGND".to_owned());
}
if msg == WM_SIZE {
let w = LOWORD(lparam as DWORD);
Expand All @@ -255,35 +277,35 @@ extern "system" fn window_proc(hwnd: HWND, msg: u32, wparam: WPARAM, lparam: LPA
out += " SIZE_MINIMIZED";
}
}
debug_output(out);
debug_output!(out);
}
if msg == WM_SHOWWINDOW {
if wparam == 0 {
debug_output("WM_SHOWWINDOW SW_HIDE".to_owned());
debug_output!("WM_SHOWWINDOW SW_HIDE".to_owned());
ShowWindow(pthis.hwnd as HWND, SW_HIDE);
} else {
debug_output("WM_SHOWWINDOW SHOW".to_owned());
debug_output!("WM_SHOWWINDOW SHOW".to_owned());
ShowWindow(pthis.hwnd as HWND, SW_SHOWNA);
}
}
if msg == WM_PAINT {
debug_output("parent WM_PAINT".to_owned());
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());
debug_output!("WM_SETFOCUS".to_owned());
}
if msg == WM_DESTROY {
debug_output("WM_DESTROY".to_owned());
debug_output!("WM_DESTROY".to_owned());
ShowWindow(pthis.hwnd as HWND, SW_HIDE);
DestroyWindow(pthis.hwnd as HWND);
}
if msg == WM_NCDESTROY {
debug_output("WM_NCDESTROY".to_owned());
debug_output!("WM_NCDESTROY".to_owned());
let mut sw = SHADOW_WNDOWS.lock().unwrap();
sw.remove(&(hwnd as usize));
}
Expand Down Expand Up @@ -311,7 +333,7 @@ fn hook_emacs_windproc(h: HWND) {
SetLastError(ERROR_SUCCESS);
let result = SetWindowLongPtrW(h, GWLP_WNDPROC, window_proc as isize);
if result == 0 && GetLastError() != ERROR_SUCCESS {
debug_output("SetWindowLongPtrW failed!".to_owned());
debug_output!("SetWindowLongPtrW failed!".to_owned());
return;
}
sd.org_winproc = result as usize;
Expand Down Expand Up @@ -339,20 +361,6 @@ fn get_current_process_wnd() -> Option<Vec<HWND>> {
}
}

fn debug_output(mut str: String) {
unsafe {
str.insert_str(
0,
&format!(
"pid:{}, tid:{} ",
GetCurrentProcessId(),
GetCurrentThreadId()
),
);
let s = to_wstring(&str);
OutputDebugStringW(s.as_ptr() as *const _);
}
}

fn set_transparent_one_frame(alpha: u8, hwnd: HWND) {
unsafe {
Expand Down Expand Up @@ -442,7 +450,7 @@ pub fn set_background(alpha: u8, r: u8, g: u8, b: u8) -> Result<()> {
}

if SHADOW_BRUSH.is_null() {
debug_output("SHADOW_BRUSH.is_null !".to_owned());
debug_output!("SHADOW_BRUSH.is_null !".to_owned());
}
let mut enable = true;
let emacs_windows = get_current_process_wnd();
Expand All @@ -467,7 +475,6 @@ pub fn set_background(alpha: u8, r: u8, g: u8, b: u8) -> Result<()> {
if alpha != 255{
if let Some(hwnd) = &emacs_windows {
for hp in hwnd {
// ShowWindow(*hp as HWND, SW_SHOWNA);
SetWindowPos(
*hp,
HWND_TOPMOST, //HWND_TOP
Expand Down

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