1602 lines
52 KiB
Rust
1602 lines
52 KiB
Rust
use std::rc::Rc;
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use ::util::ResultExt;
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use anyhow::Context as _;
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use windows::{
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Win32::{
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Foundation::*,
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Graphics::Gdi::*,
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System::SystemServices::*,
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UI::{
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Controls::*,
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HiDpi::*,
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Input::{Ime::*, KeyboardAndMouse::*},
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WindowsAndMessaging::*,
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},
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},
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core::PCWSTR,
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};
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use crate::*;
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pub(crate) const WM_GPUI_CURSOR_STYLE_CHANGED: u32 = WM_USER + 1;
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pub(crate) const WM_GPUI_CLOSE_ONE_WINDOW: u32 = WM_USER + 2;
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pub(crate) const WM_GPUI_TASK_DISPATCHED_ON_MAIN_THREAD: u32 = WM_USER + 3;
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pub(crate) const WM_GPUI_DOCK_MENU_ACTION: u32 = WM_USER + 4;
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pub(crate) const WM_GPUI_FORCE_UPDATE_WINDOW: u32 = WM_USER + 5;
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const SIZE_MOVE_LOOP_TIMER_ID: usize = 1;
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const AUTO_HIDE_TASKBAR_THICKNESS_PX: i32 = 1;
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pub(crate) fn handle_msg(
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handle: HWND,
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msg: u32,
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wparam: WPARAM,
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lparam: LPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> LRESULT {
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let handled = match msg {
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WM_ACTIVATE => handle_activate_msg(wparam, state_ptr),
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WM_CREATE => handle_create_msg(handle, state_ptr),
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WM_DEVICECHANGE => handle_device_change_msg(handle, wparam, state_ptr),
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WM_MOVE => handle_move_msg(handle, lparam, state_ptr),
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WM_SIZE => handle_size_msg(wparam, lparam, state_ptr),
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WM_GETMINMAXINFO => handle_get_min_max_info_msg(lparam, state_ptr),
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WM_ENTERSIZEMOVE | WM_ENTERMENULOOP => handle_size_move_loop(handle),
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WM_EXITSIZEMOVE | WM_EXITMENULOOP => handle_size_move_loop_exit(handle),
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WM_TIMER => handle_timer_msg(handle, wparam, state_ptr),
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WM_NCCALCSIZE => handle_calc_client_size(handle, wparam, lparam, state_ptr),
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WM_DPICHANGED => handle_dpi_changed_msg(handle, wparam, lparam, state_ptr),
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WM_DISPLAYCHANGE => handle_display_change_msg(handle, state_ptr),
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WM_NCHITTEST => handle_hit_test_msg(handle, msg, wparam, lparam, state_ptr),
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WM_PAINT => handle_paint_msg(handle, state_ptr),
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WM_CLOSE => handle_close_msg(state_ptr),
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WM_DESTROY => handle_destroy_msg(handle, state_ptr),
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WM_MOUSEMOVE => handle_mouse_move_msg(handle, lparam, wparam, state_ptr),
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WM_MOUSELEAVE | WM_NCMOUSELEAVE => handle_mouse_leave_msg(state_ptr),
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WM_NCMOUSEMOVE => handle_nc_mouse_move_msg(handle, lparam, state_ptr),
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WM_NCLBUTTONDOWN => {
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handle_nc_mouse_down_msg(handle, MouseButton::Left, wparam, lparam, state_ptr)
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}
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WM_NCRBUTTONDOWN => {
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handle_nc_mouse_down_msg(handle, MouseButton::Right, wparam, lparam, state_ptr)
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}
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WM_NCMBUTTONDOWN => {
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handle_nc_mouse_down_msg(handle, MouseButton::Middle, wparam, lparam, state_ptr)
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}
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WM_NCLBUTTONUP => {
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handle_nc_mouse_up_msg(handle, MouseButton::Left, wparam, lparam, state_ptr)
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}
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WM_NCRBUTTONUP => {
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handle_nc_mouse_up_msg(handle, MouseButton::Right, wparam, lparam, state_ptr)
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}
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WM_NCMBUTTONUP => {
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handle_nc_mouse_up_msg(handle, MouseButton::Middle, wparam, lparam, state_ptr)
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}
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WM_LBUTTONDOWN => handle_mouse_down_msg(handle, MouseButton::Left, lparam, state_ptr),
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WM_RBUTTONDOWN => handle_mouse_down_msg(handle, MouseButton::Right, lparam, state_ptr),
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WM_MBUTTONDOWN => handle_mouse_down_msg(handle, MouseButton::Middle, lparam, state_ptr),
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WM_XBUTTONDOWN => {
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handle_xbutton_msg(handle, wparam, lparam, handle_mouse_down_msg, state_ptr)
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}
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WM_LBUTTONUP => handle_mouse_up_msg(handle, MouseButton::Left, lparam, state_ptr),
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WM_RBUTTONUP => handle_mouse_up_msg(handle, MouseButton::Right, lparam, state_ptr),
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WM_MBUTTONUP => handle_mouse_up_msg(handle, MouseButton::Middle, lparam, state_ptr),
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WM_XBUTTONUP => handle_xbutton_msg(handle, wparam, lparam, handle_mouse_up_msg, state_ptr),
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WM_MOUSEWHEEL => handle_mouse_wheel_msg(handle, wparam, lparam, state_ptr),
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WM_MOUSEHWHEEL => handle_mouse_horizontal_wheel_msg(handle, wparam, lparam, state_ptr),
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WM_SYSKEYDOWN => handle_syskeydown_msg(handle, wparam, lparam, state_ptr),
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WM_SYSKEYUP => handle_syskeyup_msg(handle, wparam, lparam, state_ptr),
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WM_SYSCOMMAND => handle_system_command(wparam, state_ptr),
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WM_KEYDOWN => handle_keydown_msg(handle, wparam, lparam, state_ptr),
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WM_KEYUP => handle_keyup_msg(handle, wparam, lparam, state_ptr),
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WM_CHAR => handle_char_msg(wparam, state_ptr),
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WM_DEADCHAR => handle_dead_char_msg(wparam, state_ptr),
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WM_IME_STARTCOMPOSITION => handle_ime_position(handle, state_ptr),
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WM_IME_COMPOSITION => handle_ime_composition(handle, lparam, state_ptr),
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WM_SETCURSOR => handle_set_cursor(handle, lparam, state_ptr),
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WM_SETTINGCHANGE => handle_system_settings_changed(handle, wparam, lparam, state_ptr),
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WM_INPUTLANGCHANGE => handle_input_language_changed(lparam, state_ptr),
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WM_GPUI_CURSOR_STYLE_CHANGED => handle_cursor_changed(lparam, state_ptr),
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WM_GPUI_FORCE_UPDATE_WINDOW => draw_window(handle, true, state_ptr),
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_ => None,
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};
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if let Some(n) = handled {
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LRESULT(n)
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} else {
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unsafe { DefWindowProcW(handle, msg, wparam, lparam) }
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}
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}
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fn handle_move_msg(
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handle: HWND,
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lparam: LPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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let mut lock = state_ptr.state.borrow_mut();
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let origin = logical_point(
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lparam.signed_loword() as f32,
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lparam.signed_hiword() as f32,
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lock.scale_factor,
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);
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lock.origin = origin;
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let size = lock.logical_size;
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let center_x = origin.x.0 + size.width.0 / 2.;
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let center_y = origin.y.0 + size.height.0 / 2.;
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let monitor_bounds = lock.display.bounds();
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if center_x < monitor_bounds.left().0
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|| center_x > monitor_bounds.right().0
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|| center_y < monitor_bounds.top().0
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|| center_y > monitor_bounds.bottom().0
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{
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// center of the window may have moved to another monitor
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let monitor = unsafe { MonitorFromWindow(handle, MONITOR_DEFAULTTONULL) };
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// minimize the window can trigger this event too, in this case,
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// monitor is invalid, we do nothing.
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if !monitor.is_invalid() && lock.display.handle != monitor {
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// we will get the same monitor if we only have one
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lock.display = WindowsDisplay::new_with_handle(monitor);
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}
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}
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if let Some(mut callback) = lock.callbacks.moved.take() {
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drop(lock);
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callback();
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state_ptr.state.borrow_mut().callbacks.moved = Some(callback);
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}
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Some(0)
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}
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fn handle_get_min_max_info_msg(
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lparam: LPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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let lock = state_ptr.state.borrow();
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let min_size = lock.min_size?;
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let scale_factor = lock.scale_factor;
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let boarder_offset = lock.border_offset;
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drop(lock);
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unsafe {
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let minmax_info = &mut *(lparam.0 as *mut MINMAXINFO);
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minmax_info.ptMinTrackSize.x =
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min_size.width.scale(scale_factor).0 as i32 + boarder_offset.width_offset;
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minmax_info.ptMinTrackSize.y =
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min_size.height.scale(scale_factor).0 as i32 + boarder_offset.height_offset;
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}
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Some(0)
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}
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fn handle_size_msg(
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wparam: WPARAM,
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lparam: LPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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let mut lock = state_ptr.state.borrow_mut();
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// Don't resize the renderer when the window is minimized, but record that it was minimized so
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// that on restore the swap chain can be recreated via `update_drawable_size_even_if_unchanged`.
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if wparam.0 == SIZE_MINIMIZED as usize {
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lock.restore_from_minimized = lock.callbacks.request_frame.take();
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return Some(0);
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}
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let width = lparam.loword().max(1) as i32;
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let height = lparam.hiword().max(1) as i32;
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let new_size = size(DevicePixels(width), DevicePixels(height));
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let scale_factor = lock.scale_factor;
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if lock.restore_from_minimized.is_some() {
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lock.callbacks.request_frame = lock.restore_from_minimized.take();
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} else {
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lock.renderer.resize(new_size).log_err();
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}
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let new_size = new_size.to_pixels(scale_factor);
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lock.logical_size = new_size;
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if let Some(mut callback) = lock.callbacks.resize.take() {
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drop(lock);
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callback(new_size, scale_factor);
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state_ptr.state.borrow_mut().callbacks.resize = Some(callback);
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}
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Some(0)
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}
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fn handle_size_move_loop(handle: HWND) -> Option<isize> {
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unsafe {
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let ret = SetTimer(
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Some(handle),
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SIZE_MOVE_LOOP_TIMER_ID,
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USER_TIMER_MINIMUM,
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None,
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);
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if ret == 0 {
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log::error!(
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"unable to create timer: {}",
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std::io::Error::last_os_error()
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);
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}
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}
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None
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}
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fn handle_size_move_loop_exit(handle: HWND) -> Option<isize> {
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unsafe {
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KillTimer(Some(handle), SIZE_MOVE_LOOP_TIMER_ID).log_err();
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}
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None
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}
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fn handle_timer_msg(
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handle: HWND,
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wparam: WPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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if wparam.0 == SIZE_MOVE_LOOP_TIMER_ID {
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for runnable in state_ptr.main_receiver.drain() {
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runnable.run();
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}
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handle_paint_msg(handle, state_ptr)
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} else {
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None
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}
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}
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fn handle_paint_msg(handle: HWND, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
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draw_window(handle, false, state_ptr)
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}
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fn handle_close_msg(state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
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let mut callback = state_ptr.state.borrow_mut().callbacks.should_close.take()?;
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let should_close = callback();
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state_ptr.state.borrow_mut().callbacks.should_close = Some(callback);
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if should_close { None } else { Some(0) }
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}
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fn handle_destroy_msg(handle: HWND, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
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let callback = {
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let mut lock = state_ptr.state.borrow_mut();
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lock.callbacks.close.take()
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};
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if let Some(callback) = callback {
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callback();
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}
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unsafe {
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PostThreadMessageW(
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state_ptr.main_thread_id_win32,
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WM_GPUI_CLOSE_ONE_WINDOW,
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WPARAM(state_ptr.validation_number),
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LPARAM(handle.0 as isize),
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)
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.log_err();
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}
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Some(0)
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}
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fn handle_mouse_move_msg(
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handle: HWND,
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lparam: LPARAM,
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wparam: WPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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start_tracking_mouse(handle, &state_ptr, TME_LEAVE);
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let mut lock = state_ptr.state.borrow_mut();
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let Some(mut func) = lock.callbacks.input.take() else {
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return Some(1);
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};
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let scale_factor = lock.scale_factor;
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drop(lock);
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let pressed_button = match MODIFIERKEYS_FLAGS(wparam.loword() as u32) {
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flags if flags.contains(MK_LBUTTON) => Some(MouseButton::Left),
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flags if flags.contains(MK_RBUTTON) => Some(MouseButton::Right),
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flags if flags.contains(MK_MBUTTON) => Some(MouseButton::Middle),
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flags if flags.contains(MK_XBUTTON1) => {
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Some(MouseButton::Navigate(NavigationDirection::Back))
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}
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flags if flags.contains(MK_XBUTTON2) => {
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Some(MouseButton::Navigate(NavigationDirection::Forward))
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}
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_ => None,
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};
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let x = lparam.signed_loword() as f32;
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let y = lparam.signed_hiword() as f32;
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let input = PlatformInput::MouseMove(MouseMoveEvent {
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position: logical_point(x, y, scale_factor),
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pressed_button,
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modifiers: current_modifiers(),
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});
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let handled = !func(input).propagate;
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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if handled { Some(0) } else { Some(1) }
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}
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fn handle_mouse_leave_msg(state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
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let mut lock = state_ptr.state.borrow_mut();
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lock.hovered = false;
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if let Some(mut callback) = lock.callbacks.hovered_status_change.take() {
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drop(lock);
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callback(false);
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state_ptr.state.borrow_mut().callbacks.hovered_status_change = Some(callback);
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}
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Some(0)
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}
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fn handle_syskeydown_msg(
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handle: HWND,
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wparam: WPARAM,
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lparam: LPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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let mut lock = state_ptr.state.borrow_mut();
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let input = handle_key_event(handle, wparam, lparam, &mut lock, |keystroke| {
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PlatformInput::KeyDown(KeyDownEvent {
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keystroke,
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is_held: lparam.0 & (0x1 << 30) > 0,
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})
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})?;
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let mut func = lock.callbacks.input.take()?;
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drop(lock);
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let handled = !func(input).propagate;
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let mut lock = state_ptr.state.borrow_mut();
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lock.callbacks.input = Some(func);
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if handled {
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lock.system_key_handled = true;
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Some(0)
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} else {
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// we need to call `DefWindowProcW`, or we will lose the system-wide `Alt+F4`, `Alt+{other keys}`
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// shortcuts.
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None
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}
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}
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fn handle_syskeyup_msg(
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handle: HWND,
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wparam: WPARAM,
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lparam: LPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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let mut lock = state_ptr.state.borrow_mut();
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let input = handle_key_event(handle, wparam, lparam, &mut lock, |keystroke| {
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PlatformInput::KeyUp(KeyUpEvent { keystroke })
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})?;
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let mut func = lock.callbacks.input.take()?;
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drop(lock);
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func(input);
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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// Always return 0 to indicate that the message was handled, so we could properly handle `ModifiersChanged` event.
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Some(0)
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}
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|
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// It's a known bug that you can't trigger `ctrl-shift-0`. See:
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// https://superuser.com/questions/1455762/ctrl-shift-number-key-combination-has-stopped-working-for-a-few-numbers
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fn handle_keydown_msg(
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handle: HWND,
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wparam: WPARAM,
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lparam: LPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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let mut lock = state_ptr.state.borrow_mut();
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lock.keydown_time = Some(std::time::Instant::now());
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let Some(input) = handle_key_event(handle, wparam, lparam, &mut lock, |keystroke| {
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PlatformInput::KeyDown(KeyDownEvent {
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keystroke,
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is_held: lparam.0 & (0x1 << 30) > 0,
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})
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}) else {
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return Some(1);
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};
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drop(lock);
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let is_composing = with_input_handler(&state_ptr, |input_handler| {
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input_handler.marked_text_range()
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})
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.flatten()
|
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.is_some();
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if is_composing {
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translate_message(handle, wparam, lparam);
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return Some(0);
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}
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let Some(mut func) = state_ptr.state.borrow_mut().callbacks.input.take() else {
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return Some(1);
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};
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let handled = !func(input).propagate;
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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if handled {
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Some(0)
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} else {
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translate_message(handle, wparam, lparam);
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Some(1)
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}
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}
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|
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fn handle_keyup_msg(
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handle: HWND,
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wparam: WPARAM,
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lparam: LPARAM,
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state_ptr: Rc<WindowsWindowStatePtr>,
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) -> Option<isize> {
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let mut lock = state_ptr.state.borrow_mut();
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let Some(input) = handle_key_event(handle, wparam, lparam, &mut lock, |keystroke| {
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PlatformInput::KeyUp(KeyUpEvent { keystroke })
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}) else {
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return Some(1);
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};
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let Some(mut func) = lock.callbacks.input.take() else {
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return Some(1);
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};
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drop(lock);
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let handled = !func(input).propagate;
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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if handled { Some(0) } else { Some(1) }
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}
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fn handle_char_msg(wparam: WPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
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let input = parse_char_message(wparam, &state_ptr)?;
|
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with_input_handler(&state_ptr, |input_handler| {
|
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input_handler.replace_text_in_range(None, &input);
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});
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|
|
Some(0)
|
|
}
|
|
|
|
fn handle_dead_char_msg(wparam: WPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
let ch = char::from_u32(wparam.0 as u32)?.to_string();
|
|
with_input_handler(&state_ptr, |input_handler| {
|
|
input_handler.replace_and_mark_text_in_range(None, &ch, None);
|
|
});
|
|
None
|
|
}
|
|
|
|
fn handle_mouse_down_msg(
|
|
handle: HWND,
|
|
button: MouseButton,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
unsafe { SetCapture(handle) };
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
let Some(mut func) = lock.callbacks.input.take() else {
|
|
return Some(1);
|
|
};
|
|
let x = lparam.signed_loword();
|
|
let y = lparam.signed_hiword();
|
|
let physical_point = point(DevicePixels(x as i32), DevicePixels(y as i32));
|
|
let click_count = lock.click_state.update(button, physical_point);
|
|
let scale_factor = lock.scale_factor;
|
|
drop(lock);
|
|
|
|
let input = PlatformInput::MouseDown(MouseDownEvent {
|
|
button,
|
|
position: logical_point(x as f32, y as f32, scale_factor),
|
|
modifiers: current_modifiers(),
|
|
click_count,
|
|
first_mouse: false,
|
|
});
|
|
let handled = !func(input).propagate;
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(func);
|
|
|
|
if handled { Some(0) } else { Some(1) }
|
|
}
|
|
|
|
fn handle_mouse_up_msg(
|
|
_handle: HWND,
|
|
button: MouseButton,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
unsafe { ReleaseCapture().log_err() };
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
let Some(mut func) = lock.callbacks.input.take() else {
|
|
return Some(1);
|
|
};
|
|
let x = lparam.signed_loword() as f32;
|
|
let y = lparam.signed_hiword() as f32;
|
|
let click_count = lock.click_state.current_count;
|
|
let scale_factor = lock.scale_factor;
|
|
drop(lock);
|
|
|
|
let input = PlatformInput::MouseUp(MouseUpEvent {
|
|
button,
|
|
position: logical_point(x, y, scale_factor),
|
|
modifiers: current_modifiers(),
|
|
click_count,
|
|
});
|
|
let handled = !func(input).propagate;
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(func);
|
|
|
|
if handled { Some(0) } else { Some(1) }
|
|
}
|
|
|
|
fn handle_xbutton_msg(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
handler: impl Fn(HWND, MouseButton, LPARAM, Rc<WindowsWindowStatePtr>) -> Option<isize>,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let nav_dir = match wparam.hiword() {
|
|
XBUTTON1 => NavigationDirection::Back,
|
|
XBUTTON2 => NavigationDirection::Forward,
|
|
_ => return Some(1),
|
|
};
|
|
handler(handle, MouseButton::Navigate(nav_dir), lparam, state_ptr)
|
|
}
|
|
|
|
fn handle_mouse_wheel_msg(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let modifiers = current_modifiers();
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
let Some(mut func) = lock.callbacks.input.take() else {
|
|
return Some(1);
|
|
};
|
|
let scale_factor = lock.scale_factor;
|
|
let wheel_scroll_amount = match modifiers.shift {
|
|
true => lock.system_settings.mouse_wheel_settings.wheel_scroll_chars,
|
|
false => lock.system_settings.mouse_wheel_settings.wheel_scroll_lines,
|
|
};
|
|
drop(lock);
|
|
|
|
let wheel_distance =
|
|
(wparam.signed_hiword() as f32 / WHEEL_DELTA as f32) * wheel_scroll_amount as f32;
|
|
let mut cursor_point = POINT {
|
|
x: lparam.signed_loword().into(),
|
|
y: lparam.signed_hiword().into(),
|
|
};
|
|
unsafe { ScreenToClient(handle, &mut cursor_point).ok().log_err() };
|
|
let input = PlatformInput::ScrollWheel(ScrollWheelEvent {
|
|
position: logical_point(cursor_point.x as f32, cursor_point.y as f32, scale_factor),
|
|
delta: ScrollDelta::Lines(match modifiers.shift {
|
|
true => Point {
|
|
x: wheel_distance,
|
|
y: 0.0,
|
|
},
|
|
false => Point {
|
|
y: wheel_distance,
|
|
x: 0.0,
|
|
},
|
|
}),
|
|
modifiers,
|
|
touch_phase: TouchPhase::Moved,
|
|
});
|
|
let handled = !func(input).propagate;
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(func);
|
|
|
|
if handled { Some(0) } else { Some(1) }
|
|
}
|
|
|
|
fn handle_mouse_horizontal_wheel_msg(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
let Some(mut func) = lock.callbacks.input.take() else {
|
|
return Some(1);
|
|
};
|
|
let scale_factor = lock.scale_factor;
|
|
let wheel_scroll_chars = lock.system_settings.mouse_wheel_settings.wheel_scroll_chars;
|
|
drop(lock);
|
|
|
|
let wheel_distance =
|
|
(-wparam.signed_hiword() as f32 / WHEEL_DELTA as f32) * wheel_scroll_chars as f32;
|
|
let mut cursor_point = POINT {
|
|
x: lparam.signed_loword().into(),
|
|
y: lparam.signed_hiword().into(),
|
|
};
|
|
unsafe { ScreenToClient(handle, &mut cursor_point).ok().log_err() };
|
|
let event = PlatformInput::ScrollWheel(ScrollWheelEvent {
|
|
position: logical_point(cursor_point.x as f32, cursor_point.y as f32, scale_factor),
|
|
delta: ScrollDelta::Lines(Point {
|
|
x: wheel_distance,
|
|
y: 0.0,
|
|
}),
|
|
modifiers: current_modifiers(),
|
|
touch_phase: TouchPhase::Moved,
|
|
});
|
|
let handled = !func(event).propagate;
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(func);
|
|
|
|
if handled { Some(0) } else { Some(1) }
|
|
}
|
|
|
|
fn retrieve_caret_position(state_ptr: &Rc<WindowsWindowStatePtr>) -> Option<POINT> {
|
|
with_input_handler_and_scale_factor(state_ptr, |input_handler, scale_factor| {
|
|
let caret_range = input_handler.selected_text_range(false)?;
|
|
let caret_position = input_handler.bounds_for_range(caret_range.range)?;
|
|
Some(POINT {
|
|
// logical to physical
|
|
x: (caret_position.origin.x.0 * scale_factor) as i32,
|
|
y: (caret_position.origin.y.0 * scale_factor) as i32
|
|
+ ((caret_position.size.height.0 * scale_factor) as i32 / 2),
|
|
})
|
|
})
|
|
}
|
|
|
|
fn handle_ime_position(handle: HWND, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
unsafe {
|
|
let ctx = ImmGetContext(handle);
|
|
|
|
let Some(caret_position) = retrieve_caret_position(&state_ptr) else {
|
|
return Some(0);
|
|
};
|
|
{
|
|
let config = COMPOSITIONFORM {
|
|
dwStyle: CFS_POINT,
|
|
ptCurrentPos: caret_position,
|
|
..Default::default()
|
|
};
|
|
ImmSetCompositionWindow(ctx, &config as _).ok().log_err();
|
|
}
|
|
{
|
|
let config = CANDIDATEFORM {
|
|
dwStyle: CFS_CANDIDATEPOS,
|
|
ptCurrentPos: caret_position,
|
|
..Default::default()
|
|
};
|
|
ImmSetCandidateWindow(ctx, &config as _).ok().log_err();
|
|
}
|
|
ImmReleaseContext(handle, ctx).ok().log_err();
|
|
Some(0)
|
|
}
|
|
}
|
|
|
|
fn handle_ime_composition(
|
|
handle: HWND,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let ctx = unsafe { ImmGetContext(handle) };
|
|
let result = handle_ime_composition_inner(ctx, lparam, state_ptr);
|
|
unsafe { ImmReleaseContext(handle, ctx).ok().log_err() };
|
|
result
|
|
}
|
|
|
|
fn handle_ime_composition_inner(
|
|
ctx: HIMC,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let lparam = lparam.0 as u32;
|
|
if lparam == 0 {
|
|
// Japanese IME may send this message with lparam = 0, which indicates that
|
|
// there is no composition string.
|
|
with_input_handler(&state_ptr, |input_handler| {
|
|
input_handler.replace_text_in_range(None, "");
|
|
})?;
|
|
Some(0)
|
|
} else {
|
|
if lparam & GCS_COMPSTR.0 > 0 {
|
|
let comp_string = parse_ime_composition_string(ctx, GCS_COMPSTR)?;
|
|
let caret_pos = (!comp_string.is_empty() && lparam & GCS_CURSORPOS.0 > 0).then(|| {
|
|
let pos = retrieve_composition_cursor_position(ctx);
|
|
pos..pos
|
|
});
|
|
with_input_handler(&state_ptr, |input_handler| {
|
|
input_handler.replace_and_mark_text_in_range(None, &comp_string, caret_pos);
|
|
})?;
|
|
}
|
|
if lparam & GCS_RESULTSTR.0 > 0 {
|
|
let comp_result = parse_ime_composition_string(ctx, GCS_RESULTSTR)?;
|
|
with_input_handler(&state_ptr, |input_handler| {
|
|
input_handler.replace_text_in_range(None, &comp_result);
|
|
})?;
|
|
return Some(0);
|
|
}
|
|
|
|
// currently, we don't care other stuff
|
|
None
|
|
}
|
|
}
|
|
|
|
/// SEE: https://learn.microsoft.com/en-us/windows/win32/winmsg/wm-nccalcsize
|
|
fn handle_calc_client_size(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
if !state_ptr.hide_title_bar || state_ptr.state.borrow().is_fullscreen() || wparam.0 == 0 {
|
|
return None;
|
|
}
|
|
|
|
let is_maximized = state_ptr.state.borrow().is_maximized();
|
|
let insets = get_client_area_insets(handle, is_maximized, state_ptr.windows_version);
|
|
// wparam is TRUE so lparam points to an NCCALCSIZE_PARAMS structure
|
|
let mut params = lparam.0 as *mut NCCALCSIZE_PARAMS;
|
|
let mut requested_client_rect = unsafe { &mut ((*params).rgrc) };
|
|
|
|
requested_client_rect[0].left += insets.left;
|
|
requested_client_rect[0].top += insets.top;
|
|
requested_client_rect[0].right -= insets.right;
|
|
requested_client_rect[0].bottom -= insets.bottom;
|
|
|
|
// Fix auto hide taskbar not showing. This solution is based on the approach
|
|
// used by Chrome. However, it may result in one row of pixels being obscured
|
|
// in our client area. But as Chrome says, "there seems to be no better solution."
|
|
if is_maximized {
|
|
if let Some(ref taskbar_position) = state_ptr
|
|
.state
|
|
.borrow()
|
|
.system_settings
|
|
.auto_hide_taskbar_position
|
|
{
|
|
// Fot the auto-hide taskbar, adjust in by 1 pixel on taskbar edge,
|
|
// so the window isn't treated as a "fullscreen app", which would cause
|
|
// the taskbar to disappear.
|
|
match taskbar_position {
|
|
AutoHideTaskbarPosition::Left => {
|
|
requested_client_rect[0].left += AUTO_HIDE_TASKBAR_THICKNESS_PX
|
|
}
|
|
AutoHideTaskbarPosition::Top => {
|
|
requested_client_rect[0].top += AUTO_HIDE_TASKBAR_THICKNESS_PX
|
|
}
|
|
AutoHideTaskbarPosition::Right => {
|
|
requested_client_rect[0].right -= AUTO_HIDE_TASKBAR_THICKNESS_PX
|
|
}
|
|
AutoHideTaskbarPosition::Bottom => {
|
|
requested_client_rect[0].bottom -= AUTO_HIDE_TASKBAR_THICKNESS_PX
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Some(0)
|
|
}
|
|
|
|
fn handle_activate_msg(wparam: WPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
let activated = wparam.loword() > 0;
|
|
let this = state_ptr.clone();
|
|
state_ptr
|
|
.executor
|
|
.spawn(async move {
|
|
let mut lock = this.state.borrow_mut();
|
|
if let Some(mut func) = lock.callbacks.active_status_change.take() {
|
|
drop(lock);
|
|
func(activated);
|
|
this.state.borrow_mut().callbacks.active_status_change = Some(func);
|
|
}
|
|
})
|
|
.detach();
|
|
|
|
None
|
|
}
|
|
|
|
fn handle_create_msg(handle: HWND, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
if state_ptr.hide_title_bar {
|
|
notify_frame_changed(handle);
|
|
Some(0)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
fn handle_dpi_changed_msg(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let new_dpi = wparam.loword() as f32;
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
lock.scale_factor = new_dpi / USER_DEFAULT_SCREEN_DPI as f32;
|
|
lock.border_offset.update(handle).log_err();
|
|
drop(lock);
|
|
|
|
let rect = unsafe { &*(lparam.0 as *const RECT) };
|
|
let width = rect.right - rect.left;
|
|
let height = rect.bottom - rect.top;
|
|
// this will emit `WM_SIZE` and `WM_MOVE` right here
|
|
// even before this function returns
|
|
// the new size is handled in `WM_SIZE`
|
|
unsafe {
|
|
SetWindowPos(
|
|
handle,
|
|
None,
|
|
rect.left,
|
|
rect.top,
|
|
width,
|
|
height,
|
|
SWP_NOZORDER | SWP_NOACTIVATE,
|
|
)
|
|
.context("unable to set window position after dpi has changed")
|
|
.log_err();
|
|
}
|
|
|
|
Some(0)
|
|
}
|
|
|
|
/// The following conditions will trigger this event:
|
|
/// 1. The monitor on which the window is located goes offline or changes resolution.
|
|
/// 2. Another monitor goes offline, is plugged in, or changes resolution.
|
|
///
|
|
/// In either case, the window will only receive information from the monitor on which
|
|
/// it is located.
|
|
///
|
|
/// For example, in the case of condition 2, where the monitor on which the window is
|
|
/// located has actually changed nothing, it will still receive this event.
|
|
fn handle_display_change_msg(handle: HWND, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
// NOTE:
|
|
// Even the `lParam` holds the resolution of the screen, we just ignore it.
|
|
// Because WM_DPICHANGED, WM_MOVE, WM_SIZE will come first, window reposition and resize
|
|
// are handled there.
|
|
// So we only care about if monitor is disconnected.
|
|
let previous_monitor = state_ptr.state.borrow().display;
|
|
if WindowsDisplay::is_connected(previous_monitor.handle) {
|
|
// we are fine, other display changed
|
|
return None;
|
|
}
|
|
// display disconnected
|
|
// in this case, the OS will move our window to another monitor, and minimize it.
|
|
// we deminimize the window and query the monitor after moving
|
|
unsafe {
|
|
let _ = ShowWindow(handle, SW_SHOWNORMAL);
|
|
};
|
|
let new_monitor = unsafe { MonitorFromWindow(handle, MONITOR_DEFAULTTONULL) };
|
|
// all monitors disconnected
|
|
if new_monitor.is_invalid() {
|
|
log::error!("No monitor detected!");
|
|
return None;
|
|
}
|
|
let new_display = WindowsDisplay::new_with_handle(new_monitor);
|
|
state_ptr.state.borrow_mut().display = new_display;
|
|
Some(0)
|
|
}
|
|
|
|
fn handle_hit_test_msg(
|
|
handle: HWND,
|
|
msg: u32,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
if !state_ptr.is_movable || state_ptr.state.borrow().is_fullscreen() {
|
|
return None;
|
|
}
|
|
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if let Some(mut callback) = lock.callbacks.hit_test_window_control.take() {
|
|
drop(lock);
|
|
let area = callback();
|
|
state_ptr
|
|
.state
|
|
.borrow_mut()
|
|
.callbacks
|
|
.hit_test_window_control = Some(callback);
|
|
if let Some(area) = area {
|
|
return match area {
|
|
WindowControlArea::Drag => Some(HTCAPTION as _),
|
|
WindowControlArea::Close => Some(HTCLOSE as _),
|
|
WindowControlArea::Max => Some(HTMAXBUTTON as _),
|
|
WindowControlArea::Min => Some(HTMINBUTTON as _),
|
|
};
|
|
}
|
|
} else {
|
|
drop(lock);
|
|
}
|
|
|
|
if !state_ptr.hide_title_bar {
|
|
// If the OS draws the title bar, we don't need to handle hit test messages.
|
|
return None;
|
|
}
|
|
|
|
// default handler for resize areas
|
|
let hit = unsafe { DefWindowProcW(handle, msg, wparam, lparam) };
|
|
if matches!(
|
|
hit.0 as u32,
|
|
HTNOWHERE
|
|
| HTRIGHT
|
|
| HTLEFT
|
|
| HTTOPLEFT
|
|
| HTTOP
|
|
| HTTOPRIGHT
|
|
| HTBOTTOMRIGHT
|
|
| HTBOTTOM
|
|
| HTBOTTOMLEFT
|
|
) {
|
|
return Some(hit.0);
|
|
}
|
|
|
|
if state_ptr.state.borrow().is_fullscreen() {
|
|
return Some(HTCLIENT as _);
|
|
}
|
|
|
|
let dpi = unsafe { GetDpiForWindow(handle) };
|
|
let frame_y = unsafe { GetSystemMetricsForDpi(SM_CYFRAME, dpi) };
|
|
|
|
let mut cursor_point = POINT {
|
|
x: lparam.signed_loword().into(),
|
|
y: lparam.signed_hiword().into(),
|
|
};
|
|
unsafe { ScreenToClient(handle, &mut cursor_point).ok().log_err() };
|
|
if !state_ptr.state.borrow().is_maximized() && cursor_point.y >= 0 && cursor_point.y <= frame_y
|
|
{
|
|
return Some(HTTOP as _);
|
|
}
|
|
|
|
Some(HTCLIENT as _)
|
|
}
|
|
|
|
fn handle_nc_mouse_move_msg(
|
|
handle: HWND,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
start_tracking_mouse(handle, &state_ptr, TME_LEAVE | TME_NONCLIENT);
|
|
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
let mut func = lock.callbacks.input.take()?;
|
|
let scale_factor = lock.scale_factor;
|
|
drop(lock);
|
|
|
|
let mut cursor_point = POINT {
|
|
x: lparam.signed_loword().into(),
|
|
y: lparam.signed_hiword().into(),
|
|
};
|
|
unsafe { ScreenToClient(handle, &mut cursor_point).ok().log_err() };
|
|
let input = PlatformInput::MouseMove(MouseMoveEvent {
|
|
position: logical_point(cursor_point.x as f32, cursor_point.y as f32, scale_factor),
|
|
pressed_button: None,
|
|
modifiers: current_modifiers(),
|
|
});
|
|
let handled = !func(input).propagate;
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(func);
|
|
|
|
if handled { Some(0) } else { None }
|
|
}
|
|
|
|
fn handle_nc_mouse_down_msg(
|
|
handle: HWND,
|
|
button: MouseButton,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if let Some(mut func) = lock.callbacks.input.take() {
|
|
let scale_factor = lock.scale_factor;
|
|
let mut cursor_point = POINT {
|
|
x: lparam.signed_loword().into(),
|
|
y: lparam.signed_hiword().into(),
|
|
};
|
|
unsafe { ScreenToClient(handle, &mut cursor_point).ok().log_err() };
|
|
let physical_point = point(DevicePixels(cursor_point.x), DevicePixels(cursor_point.y));
|
|
let click_count = lock.click_state.update(button, physical_point);
|
|
drop(lock);
|
|
|
|
let input = PlatformInput::MouseDown(MouseDownEvent {
|
|
button,
|
|
position: logical_point(cursor_point.x as f32, cursor_point.y as f32, scale_factor),
|
|
modifiers: current_modifiers(),
|
|
click_count,
|
|
first_mouse: false,
|
|
});
|
|
let result = func(input.clone());
|
|
let handled = !result.propagate || result.default_prevented;
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(func);
|
|
|
|
if handled {
|
|
return Some(0);
|
|
}
|
|
} else {
|
|
drop(lock);
|
|
};
|
|
|
|
// Since these are handled in handle_nc_mouse_up_msg we must prevent the default window proc
|
|
if button == MouseButton::Left {
|
|
match wparam.0 as u32 {
|
|
HTMINBUTTON => state_ptr.state.borrow_mut().nc_button_pressed = Some(HTMINBUTTON),
|
|
HTMAXBUTTON => state_ptr.state.borrow_mut().nc_button_pressed = Some(HTMAXBUTTON),
|
|
HTCLOSE => state_ptr.state.borrow_mut().nc_button_pressed = Some(HTCLOSE),
|
|
_ => return None,
|
|
};
|
|
Some(0)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
fn handle_nc_mouse_up_msg(
|
|
handle: HWND,
|
|
button: MouseButton,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if let Some(mut func) = lock.callbacks.input.take() {
|
|
let scale_factor = lock.scale_factor;
|
|
drop(lock);
|
|
|
|
let mut cursor_point = POINT {
|
|
x: lparam.signed_loword().into(),
|
|
y: lparam.signed_hiword().into(),
|
|
};
|
|
unsafe { ScreenToClient(handle, &mut cursor_point).ok().log_err() };
|
|
let input = PlatformInput::MouseUp(MouseUpEvent {
|
|
button,
|
|
position: logical_point(cursor_point.x as f32, cursor_point.y as f32, scale_factor),
|
|
modifiers: current_modifiers(),
|
|
click_count: 1,
|
|
});
|
|
let handled = !func(input).propagate;
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(func);
|
|
|
|
if handled {
|
|
return Some(0);
|
|
}
|
|
} else {
|
|
drop(lock);
|
|
}
|
|
|
|
let last_pressed = state_ptr.state.borrow_mut().nc_button_pressed.take();
|
|
if button == MouseButton::Left
|
|
&& let Some(last_pressed) = last_pressed
|
|
{
|
|
let handled = match (wparam.0 as u32, last_pressed) {
|
|
(HTMINBUTTON, HTMINBUTTON) => {
|
|
unsafe { ShowWindowAsync(handle, SW_MINIMIZE).ok().log_err() };
|
|
true
|
|
}
|
|
(HTMAXBUTTON, HTMAXBUTTON) => {
|
|
if state_ptr.state.borrow().is_maximized() {
|
|
unsafe { ShowWindowAsync(handle, SW_NORMAL).ok().log_err() };
|
|
} else {
|
|
unsafe { ShowWindowAsync(handle, SW_MAXIMIZE).ok().log_err() };
|
|
}
|
|
true
|
|
}
|
|
(HTCLOSE, HTCLOSE) => {
|
|
unsafe {
|
|
PostMessageW(Some(handle), WM_CLOSE, WPARAM::default(), LPARAM::default())
|
|
.log_err()
|
|
};
|
|
true
|
|
}
|
|
_ => false,
|
|
};
|
|
if handled {
|
|
return Some(0);
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
fn handle_cursor_changed(lparam: LPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
let mut state = state_ptr.state.borrow_mut();
|
|
let had_cursor = state.current_cursor.is_some();
|
|
|
|
state.current_cursor = if lparam.0 == 0 {
|
|
None
|
|
} else {
|
|
Some(HCURSOR(lparam.0 as _))
|
|
};
|
|
|
|
if had_cursor != state.current_cursor.is_some() {
|
|
unsafe { SetCursor(state.current_cursor) };
|
|
}
|
|
|
|
Some(0)
|
|
}
|
|
|
|
fn handle_set_cursor(
|
|
handle: HWND,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
if unsafe { !IsWindowEnabled(handle).as_bool() }
|
|
|| matches!(
|
|
lparam.loword() as u32,
|
|
HTLEFT
|
|
| HTRIGHT
|
|
| HTTOP
|
|
| HTTOPLEFT
|
|
| HTTOPRIGHT
|
|
| HTBOTTOM
|
|
| HTBOTTOMLEFT
|
|
| HTBOTTOMRIGHT
|
|
)
|
|
{
|
|
return None;
|
|
}
|
|
unsafe {
|
|
SetCursor(state_ptr.state.borrow().current_cursor);
|
|
};
|
|
Some(1)
|
|
}
|
|
|
|
fn handle_system_settings_changed(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
if wparam.0 != 0 {
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
let display = lock.display;
|
|
lock.system_settings.update(display, wparam.0);
|
|
lock.click_state.system_update(wparam.0);
|
|
lock.border_offset.update(handle).log_err();
|
|
} else {
|
|
handle_system_theme_changed(handle, lparam, state_ptr)?;
|
|
};
|
|
// Force to trigger WM_NCCALCSIZE event to ensure that we handle auto hide
|
|
// taskbar correctly.
|
|
notify_frame_changed(handle);
|
|
|
|
Some(0)
|
|
}
|
|
|
|
fn handle_system_command(wparam: WPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
if wparam.0 == SC_KEYMENU as usize {
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if lock.system_key_handled {
|
|
lock.system_key_handled = false;
|
|
return Some(0);
|
|
}
|
|
}
|
|
None
|
|
}
|
|
|
|
fn handle_system_theme_changed(
|
|
handle: HWND,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
// lParam is a pointer to a string that indicates the area containing the system parameter
|
|
// that was changed.
|
|
let parameter = PCWSTR::from_raw(lparam.0 as _);
|
|
if unsafe { !parameter.is_null() && !parameter.is_empty() } {
|
|
if let Some(parameter_string) = unsafe { parameter.to_string() }.log_err() {
|
|
log::info!("System settings changed: {}", parameter_string);
|
|
match parameter_string.as_str() {
|
|
"ImmersiveColorSet" => {
|
|
let new_appearance = system_appearance()
|
|
.context("unable to get system appearance when handling ImmersiveColorSet")
|
|
.log_err()?;
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if new_appearance != lock.appearance {
|
|
lock.appearance = new_appearance;
|
|
let mut callback = lock.callbacks.appearance_changed.take()?;
|
|
drop(lock);
|
|
callback();
|
|
state_ptr.state.borrow_mut().callbacks.appearance_changed = Some(callback);
|
|
configure_dwm_dark_mode(handle, new_appearance);
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
}
|
|
Some(0)
|
|
}
|
|
|
|
fn handle_input_language_changed(
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let thread = state_ptr.main_thread_id_win32;
|
|
let validation = state_ptr.validation_number;
|
|
unsafe {
|
|
PostThreadMessageW(thread, WM_INPUTLANGCHANGE, WPARAM(validation), lparam).log_err();
|
|
}
|
|
Some(0)
|
|
}
|
|
|
|
fn handle_device_change_msg(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
if wparam.0 == DBT_DEVNODES_CHANGED as usize {
|
|
// The reason for sending this message is to actually trigger a redraw of the window.
|
|
unsafe {
|
|
PostMessageW(
|
|
Some(handle),
|
|
WM_GPUI_FORCE_UPDATE_WINDOW,
|
|
WPARAM(0),
|
|
LPARAM(0),
|
|
)
|
|
.log_err();
|
|
}
|
|
// If the GPU device is lost, this redraw will take care of recreating the device context.
|
|
// The WM_GPUI_FORCE_UPDATE_WINDOW message will take care of redrawing the window, after
|
|
// the device context has been recreated.
|
|
draw_window(handle, true, state_ptr)
|
|
} else {
|
|
// Other device change messages are not handled.
|
|
None
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn draw_window(
|
|
handle: HWND,
|
|
force_render: bool,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let mut request_frame = state_ptr
|
|
.state
|
|
.borrow_mut()
|
|
.callbacks
|
|
.request_frame
|
|
.take()?;
|
|
request_frame(RequestFrameOptions {
|
|
require_presentation: true,
|
|
force_render,
|
|
});
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if let Some(keydown_time) = lock.keydown_time.take() {
|
|
let elapsed = keydown_time.elapsed();
|
|
println!("Elapsed keydown time: {:.02} ms", elapsed.as_secs_f64() * 1000.0);
|
|
}
|
|
lock.callbacks.request_frame = Some(request_frame);
|
|
unsafe { ValidateRect(Some(handle), None).ok().log_err() };
|
|
Some(0)
|
|
}
|
|
|
|
#[inline]
|
|
fn parse_char_message(wparam: WPARAM, state_ptr: &Rc<WindowsWindowStatePtr>) -> Option<String> {
|
|
let code_point = wparam.loword();
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
// https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-3/#G2630
|
|
match code_point {
|
|
0xD800..=0xDBFF => {
|
|
// High surrogate, wait for low surrogate
|
|
lock.pending_surrogate = Some(code_point);
|
|
None
|
|
}
|
|
0xDC00..=0xDFFF => {
|
|
if let Some(high_surrogate) = lock.pending_surrogate.take() {
|
|
// Low surrogate, combine with pending high surrogate
|
|
String::from_utf16(&[high_surrogate, code_point]).ok()
|
|
} else {
|
|
// Invalid low surrogate without a preceding high surrogate
|
|
log::warn!(
|
|
"Received low surrogate without a preceding high surrogate: {code_point:x}"
|
|
);
|
|
None
|
|
}
|
|
}
|
|
_ => {
|
|
lock.pending_surrogate = None;
|
|
char::from_u32(code_point as u32)
|
|
.filter(|c| !c.is_control())
|
|
.map(|c| c.to_string())
|
|
}
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn translate_message(handle: HWND, wparam: WPARAM, lparam: LPARAM) {
|
|
let msg = MSG {
|
|
hwnd: handle,
|
|
message: WM_KEYDOWN,
|
|
wParam: wparam,
|
|
lParam: lparam,
|
|
// It seems like leaving the following two parameters empty doesn't break key events, they still work as expected.
|
|
// But if any bugs pop up after this PR, this is probably the place to look first.
|
|
time: 0,
|
|
pt: POINT::default(),
|
|
};
|
|
unsafe { TranslateMessage(&msg).ok().log_err() };
|
|
}
|
|
|
|
fn handle_key_event<F>(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state: &mut WindowsWindowState,
|
|
f: F,
|
|
) -> Option<PlatformInput>
|
|
where
|
|
F: FnOnce(Keystroke) -> PlatformInput,
|
|
{
|
|
let virtual_key = VIRTUAL_KEY(wparam.loword());
|
|
let mut modifiers = current_modifiers();
|
|
|
|
match virtual_key {
|
|
VK_SHIFT | VK_CONTROL | VK_MENU | VK_LWIN | VK_RWIN => {
|
|
if state
|
|
.last_reported_modifiers
|
|
.is_some_and(|prev_modifiers| prev_modifiers == modifiers)
|
|
{
|
|
return None;
|
|
}
|
|
state.last_reported_modifiers = Some(modifiers);
|
|
Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
|
|
modifiers,
|
|
capslock: current_capslock(),
|
|
}))
|
|
}
|
|
VK_PACKET => {
|
|
translate_message(handle, wparam, lparam);
|
|
None
|
|
}
|
|
VK_CAPITAL => {
|
|
let capslock = current_capslock();
|
|
if state
|
|
.last_reported_capslock
|
|
.is_some_and(|prev_capslock| prev_capslock == capslock)
|
|
{
|
|
return None;
|
|
}
|
|
state.last_reported_capslock = Some(capslock);
|
|
Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
|
|
modifiers,
|
|
capslock,
|
|
}))
|
|
}
|
|
vkey => {
|
|
let vkey = if vkey == VK_PROCESSKEY {
|
|
VIRTUAL_KEY(unsafe { ImmGetVirtualKey(handle) } as u16)
|
|
} else {
|
|
vkey
|
|
};
|
|
let keystroke = parse_normal_key(vkey, lparam, modifiers)?;
|
|
Some(f(keystroke))
|
|
}
|
|
}
|
|
}
|
|
|
|
fn parse_immutable(vkey: VIRTUAL_KEY) -> Option<String> {
|
|
Some(
|
|
match vkey {
|
|
VK_SPACE => "space",
|
|
VK_BACK => "backspace",
|
|
VK_RETURN => "enter",
|
|
VK_TAB => "tab",
|
|
VK_UP => "up",
|
|
VK_DOWN => "down",
|
|
VK_RIGHT => "right",
|
|
VK_LEFT => "left",
|
|
VK_HOME => "home",
|
|
VK_END => "end",
|
|
VK_PRIOR => "pageup",
|
|
VK_NEXT => "pagedown",
|
|
VK_BROWSER_BACK => "back",
|
|
VK_BROWSER_FORWARD => "forward",
|
|
VK_ESCAPE => "escape",
|
|
VK_INSERT => "insert",
|
|
VK_DELETE => "delete",
|
|
VK_APPS => "menu",
|
|
VK_F1 => "f1",
|
|
VK_F2 => "f2",
|
|
VK_F3 => "f3",
|
|
VK_F4 => "f4",
|
|
VK_F5 => "f5",
|
|
VK_F6 => "f6",
|
|
VK_F7 => "f7",
|
|
VK_F8 => "f8",
|
|
VK_F9 => "f9",
|
|
VK_F10 => "f10",
|
|
VK_F11 => "f11",
|
|
VK_F12 => "f12",
|
|
VK_F13 => "f13",
|
|
VK_F14 => "f14",
|
|
VK_F15 => "f15",
|
|
VK_F16 => "f16",
|
|
VK_F17 => "f17",
|
|
VK_F18 => "f18",
|
|
VK_F19 => "f19",
|
|
VK_F20 => "f20",
|
|
VK_F21 => "f21",
|
|
VK_F22 => "f22",
|
|
VK_F23 => "f23",
|
|
VK_F24 => "f24",
|
|
_ => return None,
|
|
}
|
|
.to_string(),
|
|
)
|
|
}
|
|
|
|
fn parse_normal_key(
|
|
vkey: VIRTUAL_KEY,
|
|
lparam: LPARAM,
|
|
mut modifiers: Modifiers,
|
|
) -> Option<Keystroke> {
|
|
let mut key_char = None;
|
|
let key = parse_immutable(vkey).or_else(|| {
|
|
let scan_code = lparam.hiword() & 0xFF;
|
|
key_char = generate_key_char(
|
|
vkey,
|
|
scan_code as u32,
|
|
modifiers.control,
|
|
modifiers.shift,
|
|
modifiers.alt,
|
|
);
|
|
get_keystroke_key(vkey, scan_code as u32, &mut modifiers)
|
|
})?;
|
|
Some(Keystroke {
|
|
modifiers,
|
|
key,
|
|
key_char,
|
|
})
|
|
}
|
|
|
|
fn parse_ime_composition_string(ctx: HIMC, comp_type: IME_COMPOSITION_STRING) -> Option<String> {
|
|
unsafe {
|
|
let string_len = ImmGetCompositionStringW(ctx, comp_type, None, 0);
|
|
if string_len >= 0 {
|
|
let mut buffer = vec![0u8; string_len as usize + 2];
|
|
ImmGetCompositionStringW(
|
|
ctx,
|
|
comp_type,
|
|
Some(buffer.as_mut_ptr() as _),
|
|
string_len as _,
|
|
);
|
|
let wstring = std::slice::from_raw_parts::<u16>(
|
|
buffer.as_mut_ptr().cast::<u16>(),
|
|
string_len as usize / 2,
|
|
);
|
|
Some(String::from_utf16_lossy(wstring))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn retrieve_composition_cursor_position(ctx: HIMC) -> usize {
|
|
unsafe { ImmGetCompositionStringW(ctx, GCS_CURSORPOS, None, 0) as usize }
|
|
}
|
|
|
|
#[inline]
|
|
fn is_virtual_key_pressed(vkey: VIRTUAL_KEY) -> bool {
|
|
unsafe { GetKeyState(vkey.0 as i32) < 0 }
|
|
}
|
|
|
|
#[inline]
|
|
pub(crate) fn current_modifiers() -> Modifiers {
|
|
Modifiers {
|
|
control: is_virtual_key_pressed(VK_CONTROL),
|
|
alt: is_virtual_key_pressed(VK_MENU),
|
|
shift: is_virtual_key_pressed(VK_SHIFT),
|
|
platform: is_virtual_key_pressed(VK_LWIN) || is_virtual_key_pressed(VK_RWIN),
|
|
function: false,
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
pub(crate) fn current_capslock() -> Capslock {
|
|
let on = unsafe { GetKeyState(VK_CAPITAL.0 as i32) & 1 } > 0;
|
|
Capslock { on: on }
|
|
}
|
|
|
|
fn get_client_area_insets(
|
|
handle: HWND,
|
|
is_maximized: bool,
|
|
windows_version: WindowsVersion,
|
|
) -> RECT {
|
|
// For maximized windows, Windows outdents the window rect from the screen's client rect
|
|
// by `frame_thickness` on each edge, meaning `insets` must contain `frame_thickness`
|
|
// on all sides (including the top) to avoid the client area extending onto adjacent
|
|
// monitors.
|
|
//
|
|
// For non-maximized windows, things become complicated:
|
|
//
|
|
// - On Windows 10
|
|
// The top inset must be zero, since if there is any nonclient area, Windows will draw
|
|
// a full native titlebar outside the client area. (This doesn't occur in the maximized
|
|
// case.)
|
|
//
|
|
// - On Windows 11
|
|
// The top inset is calculated using an empirical formula that I derived through various
|
|
// tests. Without this, the top 1-2 rows of pixels in our window would be obscured.
|
|
let dpi = unsafe { GetDpiForWindow(handle) };
|
|
let frame_thickness = get_frame_thickness(dpi);
|
|
let top_insets = if is_maximized {
|
|
frame_thickness
|
|
} else {
|
|
match windows_version {
|
|
WindowsVersion::Win10 => 0,
|
|
WindowsVersion::Win11 => (dpi as f32 / USER_DEFAULT_SCREEN_DPI as f32).round() as i32,
|
|
}
|
|
};
|
|
RECT {
|
|
left: frame_thickness,
|
|
top: top_insets,
|
|
right: frame_thickness,
|
|
bottom: frame_thickness,
|
|
}
|
|
}
|
|
|
|
// there is some additional non-visible space when talking about window
|
|
// borders on Windows:
|
|
// - SM_CXSIZEFRAME: The resize handle.
|
|
// - SM_CXPADDEDBORDER: Additional border space that isn't part of the resize handle.
|
|
fn get_frame_thickness(dpi: u32) -> i32 {
|
|
let resize_frame_thickness = unsafe { GetSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) };
|
|
let padding_thickness = unsafe { GetSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi) };
|
|
resize_frame_thickness + padding_thickness
|
|
}
|
|
|
|
fn notify_frame_changed(handle: HWND) {
|
|
unsafe {
|
|
SetWindowPos(
|
|
handle,
|
|
None,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
SWP_FRAMECHANGED
|
|
| SWP_NOACTIVATE
|
|
| SWP_NOCOPYBITS
|
|
| SWP_NOMOVE
|
|
| SWP_NOOWNERZORDER
|
|
| SWP_NOREPOSITION
|
|
| SWP_NOSENDCHANGING
|
|
| SWP_NOSIZE
|
|
| SWP_NOZORDER,
|
|
)
|
|
.log_err();
|
|
}
|
|
}
|
|
|
|
fn start_tracking_mouse(
|
|
handle: HWND,
|
|
state_ptr: &Rc<WindowsWindowStatePtr>,
|
|
flags: TRACKMOUSEEVENT_FLAGS,
|
|
) {
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if !lock.hovered {
|
|
lock.hovered = true;
|
|
unsafe {
|
|
TrackMouseEvent(&mut TRACKMOUSEEVENT {
|
|
cbSize: std::mem::size_of::<TRACKMOUSEEVENT>() as u32,
|
|
dwFlags: flags,
|
|
hwndTrack: handle,
|
|
dwHoverTime: HOVER_DEFAULT,
|
|
})
|
|
.log_err()
|
|
};
|
|
if let Some(mut callback) = lock.callbacks.hovered_status_change.take() {
|
|
drop(lock);
|
|
callback(true);
|
|
state_ptr.state.borrow_mut().callbacks.hovered_status_change = Some(callback);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn with_input_handler<F, R>(state_ptr: &Rc<WindowsWindowStatePtr>, f: F) -> Option<R>
|
|
where
|
|
F: FnOnce(&mut PlatformInputHandler) -> R,
|
|
{
|
|
let mut input_handler = state_ptr.state.borrow_mut().input_handler.take()?;
|
|
let result = f(&mut input_handler);
|
|
state_ptr.state.borrow_mut().input_handler = Some(input_handler);
|
|
Some(result)
|
|
}
|
|
|
|
fn with_input_handler_and_scale_factor<F, R>(
|
|
state_ptr: &Rc<WindowsWindowStatePtr>,
|
|
f: F,
|
|
) -> Option<R>
|
|
where
|
|
F: FnOnce(&mut PlatformInputHandler, f32) -> Option<R>,
|
|
{
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
let mut input_handler = lock.input_handler.take()?;
|
|
let scale_factor = lock.scale_factor;
|
|
drop(lock);
|
|
let result = f(&mut input_handler, scale_factor);
|
|
state_ptr.state.borrow_mut().input_handler = Some(input_handler);
|
|
result
|
|
}
|