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Windows: IME support (#9188)
Waiting for #9180 to be merged. The behavior of IME windows is consistent with VS Code. https://github.com/zed-industries/zed/assets/14981363/14913219-7345-4fec-9cc5-623d0c60acc9 Release Notes: - N/A
This commit is contained in:
张小白
GitHub
parent
c2d27c44f9
commit
845eb64615
@ -340,6 +340,7 @@ version = "0.53.0"
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features = [
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"implement",
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"Wdk_System_SystemServices",
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"Win32_Globalization",
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"Win32_Graphics_DirectComposition",
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"Win32_Graphics_Gdi",
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"Win32_Security",
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@ -353,6 +354,7 @@ features = [
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"Win32_System_Time",
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"Win32_System_Threading",
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"Win32_UI_Controls",
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"Win32_UI_Input_Ime",
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"Win32_UI_Input_KeyboardAndMouse",
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"Win32_UI_Shell",
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"Win32_UI_WindowsAndMessaging",
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@ -22,7 +22,7 @@ use smallvec::SmallVec;
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use windows::{
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core::{implement, w, HSTRING, PCWSTR},
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Win32::{
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Foundation::{FALSE, HINSTANCE, HWND, LPARAM, LRESULT, POINTL, S_OK, WPARAM},
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Foundation::{FALSE, HINSTANCE, HWND, LPARAM, LRESULT, POINT, POINTL, S_OK, WPARAM},
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Graphics::Gdi::{BeginPaint, EndPaint, InvalidateRect, PAINTSTRUCT},
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System::{
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Com::{IDataObject, DVASPECT_CONTENT, FORMATETC, TYMED_HGLOBAL},
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@ -39,22 +39,28 @@ use windows::{
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TaskDialogIndirect, TASKDIALOGCONFIG, TASKDIALOG_BUTTON, TD_ERROR_ICON,
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TD_INFORMATION_ICON, TD_WARNING_ICON,
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},
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Input::KeyboardAndMouse::{
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GetKeyState, VIRTUAL_KEY, VK_0, VK_A, VK_BACK, VK_CONTROL, VK_DOWN, VK_END,
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VK_ESCAPE, VK_F1, VK_F24, VK_HOME, VK_INSERT, VK_LEFT, VK_LWIN, VK_MENU, VK_NEXT,
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VK_PRIOR, VK_RETURN, VK_RIGHT, VK_RWIN, VK_SHIFT, VK_TAB, VK_UP,
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Input::{
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Ime::{
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ImmGetCompositionStringW, ImmGetContext, ImmReleaseContext,
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ImmSetCandidateWindow, CANDIDATEFORM, CFS_CANDIDATEPOS, GCS_COMPSTR,
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},
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KeyboardAndMouse::{
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GetKeyState, VIRTUAL_KEY, VK_0, VK_A, VK_BACK, VK_CONTROL, VK_DOWN, VK_END,
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VK_ESCAPE, VK_F1, VK_F24, VK_HOME, VK_INSERT, VK_LEFT, VK_LWIN, VK_MENU,
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VK_NEXT, VK_PRIOR, VK_RETURN, VK_RIGHT, VK_RWIN, VK_SHIFT, VK_TAB, VK_UP,
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},
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},
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Shell::{DragQueryFileW, HDROP},
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WindowsAndMessaging::{
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CreateWindowExW, DefWindowProcW, GetWindowLongPtrW, LoadCursorW, PostQuitMessage,
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RegisterClassW, SetWindowLongPtrW, SetWindowTextW, ShowWindow, CREATESTRUCTW,
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GWLP_USERDATA, HMENU, IDC_ARROW, SW_MAXIMIZE, SW_SHOW, WHEEL_DELTA,
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WINDOW_EX_STYLE, WINDOW_LONG_PTR_INDEX, WM_CHAR, WM_CLOSE, WM_DESTROY, WM_KEYDOWN,
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WM_KEYUP, WM_LBUTTONDOWN, WM_LBUTTONUP, WM_MBUTTONDOWN, WM_MBUTTONUP,
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WM_MOUSEHWHEEL, WM_MOUSEMOVE, WM_MOUSEWHEEL, WM_MOVE, WM_NCCREATE, WM_NCDESTROY,
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WM_PAINT, WM_RBUTTONDOWN, WM_RBUTTONUP, WM_SIZE, WM_SYSKEYDOWN, WM_SYSKEYUP,
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WM_XBUTTONDOWN, WM_XBUTTONUP, WNDCLASSW, WS_OVERLAPPEDWINDOW, WS_VISIBLE, XBUTTON1,
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XBUTTON2,
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WINDOW_EX_STYLE, WINDOW_LONG_PTR_INDEX, WM_CHAR, WM_CLOSE, WM_DESTROY, WM_IME_CHAR,
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WM_IME_COMPOSITION, WM_IME_STARTCOMPOSITION, WM_KEYDOWN, WM_KEYUP, WM_LBUTTONDOWN,
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WM_LBUTTONUP, WM_MBUTTONDOWN, WM_MBUTTONUP, WM_MOUSEHWHEEL, WM_MOUSEMOVE,
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WM_MOUSEWHEEL, WM_MOVE, WM_NCCREATE, WM_NCDESTROY, WM_PAINT, WM_RBUTTONDOWN,
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WM_RBUTTONUP, WM_SIZE, WM_SYSKEYDOWN, WM_SYSKEYUP, WM_XBUTTONDOWN, WM_XBUTTONUP,
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WNDCLASSW, WS_OVERLAPPEDWINDOW, WS_VISIBLE, XBUTTON1, XBUTTON2,
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},
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},
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},
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@ -211,6 +217,9 @@ impl WindowsWindowInner {
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WM_KEYDOWN => self.handle_keydown_msg(msg, wparam, lparam),
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WM_KEYUP => self.handle_keyup_msg(msg, wparam),
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WM_CHAR => self.handle_char_msg(msg, wparam, lparam),
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WM_IME_STARTCOMPOSITION => self.handle_ime_position(),
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WM_IME_COMPOSITION => self.handle_ime_composition(msg, wparam, lparam),
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WM_IME_CHAR => self.handle_ime_char(wparam),
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_ => unsafe { DefWindowProcW(self.hwnd, msg, wparam, lparam) },
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}
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}
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@ -612,6 +621,99 @@ impl WindowsWindowInner {
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LRESULT(1)
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}
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fn handle_ime_position(&self) -> LRESULT {
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unsafe {
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let ctx = ImmGetContext(self.hwnd);
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let Some(mut input_handler) = self.input_handler.take() else {
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return LRESULT(1);
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};
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// we are composing, this should never fail
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let caret_range = input_handler.selected_text_range().unwrap();
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let caret_position = input_handler.bounds_for_range(caret_range).unwrap();
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self.input_handler.set(Some(input_handler));
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let config = CANDIDATEFORM {
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dwStyle: CFS_CANDIDATEPOS,
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ptCurrentPos: POINT {
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x: caret_position.origin.x.0 as i32,
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y: caret_position.origin.y.0 as i32 + (caret_position.size.height.0 as i32 / 2),
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},
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..Default::default()
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};
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ImmSetCandidateWindow(ctx, &config as _);
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ImmReleaseContext(self.hwnd, ctx);
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LRESULT(0)
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}
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}
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fn parse_ime_compostion_string(&self) -> Option<(String, usize)> {
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unsafe {
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let ctx = ImmGetContext(self.hwnd);
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let string_len = ImmGetCompositionStringW(ctx, GCS_COMPSTR, None, 0);
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let result = if string_len >= 0 {
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let mut buffer = vec![0u8; string_len as usize + 2];
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// let mut buffer = [0u8; MAX_PATH as _];
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ImmGetCompositionStringW(
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ctx,
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GCS_COMPSTR,
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Some(buffer.as_mut_ptr() as _),
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string_len as _,
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);
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let wstring = std::slice::from_raw_parts::<u16>(
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buffer.as_mut_ptr().cast::<u16>(),
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string_len as usize / 2,
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);
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let string = String::from_utf16_lossy(wstring);
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Some((string, string_len as usize / 2))
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} else {
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None
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};
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ImmReleaseContext(self.hwnd, ctx);
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result
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}
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}
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fn handle_ime_composition(&self, msg: u32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
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if lparam.0 as u32 & GCS_COMPSTR.0 > 0 {
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let Some((string, string_len)) = self.parse_ime_compostion_string() else {
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return unsafe { DefWindowProcW(self.hwnd, msg, wparam, lparam) };
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};
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let Some(mut input_handler) = self.input_handler.take() else {
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return unsafe { DefWindowProcW(self.hwnd, msg, wparam, lparam) };
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};
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input_handler.replace_and_mark_text_in_range(
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None,
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string.as_str(),
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Some(0..string_len),
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);
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self.input_handler.set(Some(input_handler));
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unsafe { DefWindowProcW(self.hwnd, msg, wparam, lparam) }
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} else {
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// currently, we don't care other stuff
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unsafe { DefWindowProcW(self.hwnd, msg, wparam, lparam) }
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}
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}
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fn parse_ime_char(&self, wparam: WPARAM) -> Option<String> {
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let src = [wparam.0 as u16];
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let Ok(first_char) = char::decode_utf16(src).collect::<Vec<_>>()[0] else {
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return None;
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};
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Some(first_char.to_string())
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}
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fn handle_ime_char(&self, wparam: WPARAM) -> LRESULT {
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let Some(ime_char) = self.parse_ime_char(wparam) else {
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return LRESULT(1);
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};
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let Some(mut input_handler) = self.input_handler.take() else {
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return LRESULT(1);
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};
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input_handler.replace_text_in_range(None, &ime_char);
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self.input_handler.set(Some(input_handler));
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self.invalidate_client_area();
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LRESULT(0)
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}
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fn handle_drag_drop(&self, input: PlatformInput) {
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let mut callbacks = self.callbacks.borrow_mut();
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let Some(ref mut func) = callbacks.input else {
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