1572 lines
51 KiB
Rust
1572 lines
51 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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core::PCWSTR,
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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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};
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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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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(handle, wparam, state_ptr),
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WM_CREATE => handle_create_msg(handle, 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_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(wparam, lparam, state_ptr),
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WM_SYSKEYUP => handle_syskeyup_msg(wparam, state_ptr),
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WM_SYSCOMMAND => handle_system_command(wparam, state_ptr),
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WM_KEYDOWN => handle_keydown_msg(wparam, lparam, state_ptr),
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WM_KEYUP => handle_keyup_msg(wparam, state_ptr),
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WM_CHAR => handle_char_msg(wparam, lparam, 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(lparam, state_ptr),
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WM_SETTINGCHANGE => handle_system_settings_changed(handle, lparam, state_ptr),
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WM_GPUI_CURSOR_STYLE_CHANGED => handle_cursor_changed(lparam, 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_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.renderer
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.update_drawable_size_even_if_unchanged(new_size);
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lock.callbacks.request_frame = lock.restore_from_minimized.take();
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} else {
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lock.renderer.update_drawable_size(new_size);
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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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let mut lock = state_ptr.state.borrow_mut();
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if let Some(mut request_frame) = lock.callbacks.request_frame.take() {
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drop(lock);
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request_frame(Default::default());
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state_ptr.state.borrow_mut().callbacks.request_frame = Some(request_frame);
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}
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unsafe { ValidateRect(Some(handle), None).ok().log_err() };
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Some(0)
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}
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fn handle_close_msg(state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
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let mut lock = state_ptr.state.borrow_mut();
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if let Some(mut callback) = lock.callbacks.should_close.take() {
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drop(lock);
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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 {
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None
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} else {
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Some(0)
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}
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} else {
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None
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}
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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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if let Some(mut callback) = lock.callbacks.input.take() {
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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 event = 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 result = if callback(PlatformInput::MouseMove(event)).default_prevented {
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Some(0)
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} else {
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Some(1)
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};
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state_ptr.state.borrow_mut().callbacks.input = Some(callback);
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return result;
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}
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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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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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// 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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let keystroke = parse_syskeydown_msg_keystroke(wparam)?;
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let mut func = state_ptr.state.borrow_mut().callbacks.input.take()?;
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let event = 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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let result = if !func(PlatformInput::KeyDown(event)).propagate {
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state_ptr.state.borrow_mut().system_key_handled = true;
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Some(0)
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} else {
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None
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};
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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result
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}
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fn handle_syskeyup_msg(wparam: WPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
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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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let keystroke = parse_syskeydown_msg_keystroke(wparam)?;
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let mut func = state_ptr.state.borrow_mut().callbacks.input.take()?;
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let event = KeyUpEvent { keystroke };
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let result = if func(PlatformInput::KeyUp(event)).default_prevented {
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Some(0)
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} else {
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Some(1)
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};
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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result
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}
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fn handle_keydown_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 Some(keystroke_or_modifier) = parse_keydown_msg_keystroke(wparam) else {
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return Some(1);
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};
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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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drop(lock);
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let event = match keystroke_or_modifier {
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KeystrokeOrModifier::Keystroke(keystroke) => 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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KeystrokeOrModifier::Modifier(modifiers) => {
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PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers })
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}
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};
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let result = if func(event).default_prevented {
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Some(0)
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} else {
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Some(1)
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};
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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result
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}
|
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fn handle_keyup_msg(wparam: WPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
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let Some(keystroke_or_modifier) = parse_keydown_msg_keystroke(wparam) else {
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return Some(1);
|
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};
|
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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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drop(lock);
|
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let event = match keystroke_or_modifier {
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KeystrokeOrModifier::Keystroke(keystroke) => PlatformInput::KeyUp(KeyUpEvent { keystroke }),
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KeystrokeOrModifier::Modifier(modifiers) => {
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PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers })
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}
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};
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|
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let result = if func(event).default_prevented {
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Some(0)
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} else {
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Some(1)
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};
|
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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result
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}
|
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|
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fn handle_char_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 Some(keystroke) = parse_char_msg_keystroke(wparam) else {
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return Some(1);
|
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};
|
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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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drop(lock);
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let key_char = keystroke.key_char.clone();
|
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let event = 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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let dispatch_event_result = func(PlatformInput::KeyDown(event));
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state_ptr.state.borrow_mut().callbacks.input = Some(func);
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if dispatch_event_result.default_prevented || !dispatch_event_result.propagate {
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return Some(0);
|
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}
|
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let Some(ime_char) = key_char else {
|
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return Some(1);
|
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};
|
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with_input_handler(&state_ptr, |input_handler| {
|
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input_handler.replace_text_in_range(None, &ime_char);
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});
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Some(0)
|
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}
|
|
|
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fn handle_mouse_down_msg(
|
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handle: HWND,
|
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button: MouseButton,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
unsafe { SetCapture(handle) };
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if let Some(mut callback) = lock.callbacks.input.take() {
|
|
let x = lparam.signed_loword() as f32;
|
|
let y = lparam.signed_hiword() as f32;
|
|
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 event = MouseDownEvent {
|
|
button,
|
|
position: logical_point(x, y, scale_factor),
|
|
modifiers: current_modifiers(),
|
|
click_count,
|
|
first_mouse: false,
|
|
};
|
|
let result = if callback(PlatformInput::MouseDown(event)).default_prevented {
|
|
Some(0)
|
|
} else {
|
|
Some(1)
|
|
};
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(callback);
|
|
|
|
result
|
|
} 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();
|
|
if let Some(mut callback) = lock.callbacks.input.take() {
|
|
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 event = MouseUpEvent {
|
|
button,
|
|
position: logical_point(x, y, scale_factor),
|
|
modifiers: current_modifiers(),
|
|
click_count,
|
|
};
|
|
let result = if callback(PlatformInput::MouseUp(event)).default_prevented {
|
|
Some(0)
|
|
} else {
|
|
Some(1)
|
|
};
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(callback);
|
|
|
|
result
|
|
} 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();
|
|
if let Some(mut callback) = lock.callbacks.input.take() {
|
|
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 event = 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: current_modifiers(),
|
|
touch_phase: TouchPhase::Moved,
|
|
};
|
|
let result = if callback(PlatformInput::ScrollWheel(event)).default_prevented {
|
|
Some(0)
|
|
} else {
|
|
Some(1)
|
|
};
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(callback);
|
|
|
|
result
|
|
} 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();
|
|
if let Some(mut callback) = lock.callbacks.input.take() {
|
|
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 = 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 result = if callback(PlatformInput::ScrollWheel(event)).default_prevented {
|
|
Some(0)
|
|
} else {
|
|
Some(1)
|
|
};
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(callback);
|
|
|
|
result
|
|
} 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 mut ime_input = None;
|
|
if lparam.0 as u32 & GCS_COMPSTR.0 > 0 {
|
|
let (comp_string, string_len) = parse_ime_compostion_string(ctx)?;
|
|
with_input_handler(&state_ptr, |input_handler| {
|
|
input_handler.replace_and_mark_text_in_range(
|
|
None,
|
|
&comp_string,
|
|
Some(string_len..string_len),
|
|
);
|
|
})?;
|
|
ime_input = Some(comp_string);
|
|
}
|
|
if lparam.0 as u32 & GCS_CURSORPOS.0 > 0 {
|
|
let comp_string = &ime_input?;
|
|
let caret_pos = retrieve_composition_cursor_position(ctx);
|
|
with_input_handler(&state_ptr, |input_handler| {
|
|
input_handler.replace_and_mark_text_in_range(
|
|
None,
|
|
comp_string,
|
|
Some(caret_pos..caret_pos),
|
|
);
|
|
})?;
|
|
}
|
|
if lparam.0 as u32 & GCS_RESULTSTR.0 > 0 {
|
|
let comp_result = parse_ime_compostion_result(ctx)?;
|
|
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(
|
|
handle: HWND,
|
|
wparam: WPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let activated = wparam.loword() > 0;
|
|
if state_ptr.hide_title_bar {
|
|
if let Some(titlebar_rect) = state_ptr.state.borrow().get_titlebar_rect().log_err() {
|
|
unsafe {
|
|
InvalidateRect(Some(handle), Some(&titlebar_rect), false)
|
|
.ok()
|
|
.log_err()
|
|
};
|
|
}
|
|
}
|
|
let this = state_ptr.clone();
|
|
state_ptr
|
|
.executor
|
|
.spawn(async move {
|
|
let mut lock = this.state.borrow_mut();
|
|
if let Some(mut cb) = lock.callbacks.active_status_change.take() {
|
|
drop(lock);
|
|
cb(activated);
|
|
this.state.borrow_mut().callbacks.active_status_change = Some(cb);
|
|
}
|
|
})
|
|
.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.as_ref().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.as_ref().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 {
|
|
return None;
|
|
}
|
|
if !state_ptr.hide_title_bar {
|
|
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 _);
|
|
}
|
|
|
|
let titlebar_rect = state_ptr.state.borrow().get_titlebar_rect();
|
|
if let Ok(titlebar_rect) = titlebar_rect {
|
|
if cursor_point.y < titlebar_rect.bottom {
|
|
let caption_btn_width = (state_ptr.state.borrow().caption_button_width().0
|
|
* state_ptr.state.borrow().scale_factor) as i32;
|
|
if cursor_point.x >= titlebar_rect.right - caption_btn_width {
|
|
return Some(HTCLOSE as _);
|
|
} else if cursor_point.x >= titlebar_rect.right - caption_btn_width * 2 {
|
|
return Some(HTMAXBUTTON as _);
|
|
} else if cursor_point.x >= titlebar_rect.right - caption_btn_width * 3 {
|
|
return Some(HTMINBUTTON as _);
|
|
}
|
|
|
|
return Some(HTCAPTION as _);
|
|
}
|
|
}
|
|
|
|
Some(HTCLIENT as _)
|
|
}
|
|
|
|
fn handle_nc_mouse_move_msg(
|
|
handle: HWND,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
if !state_ptr.hide_title_bar {
|
|
return None;
|
|
}
|
|
|
|
start_tracking_mouse(handle, &state_ptr, TME_LEAVE | TME_NONCLIENT);
|
|
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if let Some(mut callback) = 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 event = MouseMoveEvent {
|
|
position: logical_point(cursor_point.x as f32, cursor_point.y as f32, scale_factor),
|
|
pressed_button: None,
|
|
modifiers: current_modifiers(),
|
|
};
|
|
let result = if callback(PlatformInput::MouseMove(event)).default_prevented {
|
|
Some(0)
|
|
} else {
|
|
Some(1)
|
|
};
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(callback);
|
|
|
|
result
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
fn handle_nc_mouse_down_msg(
|
|
handle: HWND,
|
|
button: MouseButton,
|
|
wparam: WPARAM,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
if !state_ptr.hide_title_bar {
|
|
return None;
|
|
}
|
|
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if let Some(mut callback) = 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 event = 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 = if callback(PlatformInput::MouseDown(event)).default_prevented {
|
|
Some(0)
|
|
} else {
|
|
None
|
|
};
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(callback);
|
|
|
|
if result.is_some() {
|
|
return result;
|
|
}
|
|
} 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> {
|
|
if !state_ptr.hide_title_bar {
|
|
return None;
|
|
}
|
|
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
if let Some(mut callback) = 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 event = MouseUpEvent {
|
|
button,
|
|
position: logical_point(cursor_point.x as f32, cursor_point.y as f32, scale_factor),
|
|
modifiers: current_modifiers(),
|
|
click_count: 1,
|
|
};
|
|
let result = if callback(PlatformInput::MouseUp(event)).default_prevented {
|
|
Some(0)
|
|
} else {
|
|
None
|
|
};
|
|
state_ptr.state.borrow_mut().callbacks.input = Some(callback);
|
|
if result.is_some() {
|
|
return result;
|
|
}
|
|
} else {
|
|
drop(lock);
|
|
}
|
|
|
|
let last_pressed = state_ptr.state.borrow_mut().nc_button_pressed.take();
|
|
if button == MouseButton::Left && last_pressed.is_some() {
|
|
let last_button = last_pressed.unwrap();
|
|
let mut handled = false;
|
|
match wparam.0 as u32 {
|
|
HTMINBUTTON => {
|
|
if last_button == HTMINBUTTON {
|
|
unsafe { ShowWindowAsync(handle, SW_MINIMIZE).ok().log_err() };
|
|
handled = true;
|
|
}
|
|
}
|
|
HTMAXBUTTON => {
|
|
if last_button == 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() };
|
|
}
|
|
handled = true;
|
|
}
|
|
}
|
|
HTCLOSE => {
|
|
if last_button == HTCLOSE {
|
|
unsafe {
|
|
PostMessageW(Some(handle), WM_CLOSE, WPARAM::default(), LPARAM::default())
|
|
.log_err()
|
|
};
|
|
handled = true;
|
|
}
|
|
}
|
|
_ => {}
|
|
};
|
|
if handled {
|
|
return Some(0);
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
fn handle_cursor_changed(lparam: LPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
state_ptr.state.borrow_mut().current_cursor = HCURSOR(lparam.0 as _);
|
|
Some(0)
|
|
}
|
|
|
|
fn handle_set_cursor(lparam: LPARAM, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
|
|
if matches!(
|
|
lparam.loword() as u32,
|
|
HTLEFT | HTRIGHT | HTTOP | HTTOPLEFT | HTTOPRIGHT | HTBOTTOM | HTBOTTOMLEFT | HTBOTTOMRIGHT
|
|
) {
|
|
return None;
|
|
}
|
|
unsafe { SetCursor(Some(state_ptr.state.borrow().current_cursor)) };
|
|
Some(1)
|
|
}
|
|
|
|
fn handle_system_settings_changed(
|
|
handle: HWND,
|
|
lparam: LPARAM,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let mut lock = state_ptr.state.borrow_mut();
|
|
let display = lock.display;
|
|
// system settings
|
|
lock.system_settings.update(display);
|
|
// mouse double click
|
|
lock.click_state.system_update();
|
|
// window border offset
|
|
lock.border_offset.update(handle).log_err();
|
|
drop(lock);
|
|
|
|
// 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" => {
|
|
handle_system_theme_changed(handle, 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,
|
|
state_ptr: Rc<WindowsWindowStatePtr>,
|
|
) -> Option<isize> {
|
|
let mut callback = state_ptr
|
|
.state
|
|
.borrow_mut()
|
|
.callbacks
|
|
.appearance_changed
|
|
.take()?;
|
|
callback();
|
|
state_ptr.state.borrow_mut().callbacks.appearance_changed = Some(callback);
|
|
configure_dwm_dark_mode(handle);
|
|
Some(0)
|
|
}
|
|
|
|
fn parse_syskeydown_msg_keystroke(wparam: WPARAM) -> Option<Keystroke> {
|
|
let modifiers = current_modifiers();
|
|
let vk_code = wparam.loword();
|
|
|
|
// on Windows, F10 can trigger this event, not just the alt key,
|
|
// so when F10 was pressed, handle only it
|
|
if !modifiers.alt {
|
|
if vk_code == VK_F10.0 {
|
|
let offset = vk_code - VK_F1.0;
|
|
return Some(Keystroke {
|
|
modifiers,
|
|
key: format!("f{}", offset + 1),
|
|
key_char: None,
|
|
});
|
|
} else {
|
|
return None;
|
|
}
|
|
}
|
|
|
|
let key = match VIRTUAL_KEY(vk_code) {
|
|
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",
|
|
_ => {
|
|
let basic_key = basic_vkcode_to_string(vk_code, modifiers);
|
|
if basic_key.is_some() {
|
|
return basic_key;
|
|
} else {
|
|
if vk_code >= VK_F1.0 && vk_code <= VK_F24.0 {
|
|
let offset = vk_code - VK_F1.0;
|
|
return Some(Keystroke {
|
|
modifiers,
|
|
key: format!("f{}", offset + 1),
|
|
key_char: None,
|
|
});
|
|
} else {
|
|
return None;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
.to_owned();
|
|
|
|
Some(Keystroke {
|
|
modifiers,
|
|
key,
|
|
key_char: None,
|
|
})
|
|
}
|
|
|
|
enum KeystrokeOrModifier {
|
|
Keystroke(Keystroke),
|
|
Modifier(Modifiers),
|
|
}
|
|
|
|
fn parse_keydown_msg_keystroke(wparam: WPARAM) -> Option<KeystrokeOrModifier> {
|
|
let vk_code = wparam.loword();
|
|
|
|
let modifiers = current_modifiers();
|
|
|
|
let key = match VIRTUAL_KEY(vk_code) {
|
|
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",
|
|
_ => {
|
|
if is_modifier(VIRTUAL_KEY(vk_code)) {
|
|
return Some(KeystrokeOrModifier::Modifier(modifiers));
|
|
}
|
|
|
|
if modifiers.control || modifiers.alt {
|
|
let basic_key = basic_vkcode_to_string(vk_code, modifiers);
|
|
if let Some(basic_key) = basic_key {
|
|
return Some(KeystrokeOrModifier::Keystroke(basic_key));
|
|
}
|
|
}
|
|
|
|
if vk_code >= VK_F1.0 && vk_code <= VK_F24.0 {
|
|
let offset = vk_code - VK_F1.0;
|
|
return Some(KeystrokeOrModifier::Keystroke(Keystroke {
|
|
modifiers,
|
|
key: format!("f{}", offset + 1),
|
|
key_char: None,
|
|
}));
|
|
};
|
|
return None;
|
|
}
|
|
}
|
|
.to_owned();
|
|
|
|
Some(KeystrokeOrModifier::Keystroke(Keystroke {
|
|
modifiers,
|
|
key,
|
|
key_char: None,
|
|
}))
|
|
}
|
|
|
|
fn parse_char_msg_keystroke(wparam: WPARAM) -> Option<Keystroke> {
|
|
let first_char = char::from_u32((wparam.0 as u16).into())?;
|
|
if first_char.is_control() {
|
|
None
|
|
} else {
|
|
let mut modifiers = current_modifiers();
|
|
// for characters that use 'shift' to type it is expected that the
|
|
// shift is not reported if the uppercase/lowercase are the same and instead only the key is reported
|
|
if first_char.to_ascii_uppercase() == first_char.to_ascii_lowercase() {
|
|
modifiers.shift = false;
|
|
}
|
|
let key = match first_char {
|
|
' ' => "space".to_string(),
|
|
first_char => first_char.to_lowercase().to_string(),
|
|
};
|
|
Some(Keystroke {
|
|
modifiers,
|
|
key,
|
|
key_char: Some(first_char.to_string()),
|
|
})
|
|
}
|
|
}
|
|
|
|
fn parse_ime_compostion_string(ctx: HIMC) -> Option<(String, usize)> {
|
|
unsafe {
|
|
let string_len = ImmGetCompositionStringW(ctx, GCS_COMPSTR, None, 0);
|
|
if string_len >= 0 {
|
|
let mut buffer = vec![0u8; string_len as usize + 2];
|
|
ImmGetCompositionStringW(
|
|
ctx,
|
|
GCS_COMPSTR,
|
|
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,
|
|
);
|
|
let string = String::from_utf16_lossy(wstring);
|
|
Some((string, string_len as usize / 2))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn retrieve_composition_cursor_position(ctx: HIMC) -> usize {
|
|
unsafe { ImmGetCompositionStringW(ctx, GCS_CURSORPOS, None, 0) as usize }
|
|
}
|
|
|
|
fn parse_ime_compostion_result(ctx: HIMC) -> Option<String> {
|
|
unsafe {
|
|
let string_len = ImmGetCompositionStringW(ctx, GCS_RESULTSTR, None, 0);
|
|
if string_len >= 0 {
|
|
let mut buffer = vec![0u8; string_len as usize + 2];
|
|
ImmGetCompositionStringW(
|
|
ctx,
|
|
GCS_RESULTSTR,
|
|
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,
|
|
);
|
|
let string = String::from_utf16_lossy(wstring);
|
|
Some(string)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
fn basic_vkcode_to_string(code: u16, modifiers: Modifiers) -> Option<Keystroke> {
|
|
let mapped_code = unsafe { MapVirtualKeyW(code as u32, MAPVK_VK_TO_CHAR) };
|
|
|
|
let key = match mapped_code {
|
|
0 => None,
|
|
raw_code => char::from_u32(raw_code),
|
|
}?
|
|
.to_ascii_lowercase();
|
|
|
|
let key = if matches!(code as u32, 112..=135) {
|
|
format!("f{key}")
|
|
} else {
|
|
key.to_string()
|
|
};
|
|
|
|
Some(Keystroke {
|
|
modifiers,
|
|
key,
|
|
key_char: None,
|
|
})
|
|
}
|
|
|
|
#[inline]
|
|
fn is_virtual_key_pressed(vkey: VIRTUAL_KEY) -> bool {
|
|
unsafe { GetKeyState(vkey.0 as i32) < 0 }
|
|
}
|
|
|
|
fn is_modifier(virtual_key: VIRTUAL_KEY) -> bool {
|
|
matches!(
|
|
virtual_key,
|
|
VK_CONTROL | VK_MENU | VK_SHIFT | VK_LWIN | VK_RWIN
|
|
)
|
|
}
|
|
|
|
#[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,
|
|
}
|
|
}
|
|
|
|
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
|
|
}
|