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Co-authored-by: Wu Yu Wei <wusyong9104@gmail.com> Co-authored-by: Amr Bashir <amr.bashir2015@gmail.com>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,5 @@ | ||
| --- | ||
| "wry": minor | ||
| --- | ||
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| Add `winit` and `tao` feature flag with `tao` as default. |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,149 @@ | ||
| #![allow(non_snake_case)] | ||
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| use once_cell::sync::Lazy; | ||
| use windows::{ | ||
| core::HRESULT, | ||
| Win32::{ | ||
| Foundation::{HWND, LPARAM, LRESULT, RECT, WPARAM}, | ||
| Graphics::Gdi::{ | ||
| GetDC, GetDeviceCaps, MonitorFromWindow, HMONITOR, LOGPIXELSX, MONITOR_DEFAULTTONEAREST, | ||
| }, | ||
| UI::{ | ||
| HiDpi::{MDT_EFFECTIVE_DPI, MONITOR_DPI_TYPE}, | ||
| Input::KeyboardAndMouse::ReleaseCapture, | ||
| WindowsAndMessaging::{ | ||
| GetWindowRect, IsProcessDPIAware, PostMessageW, HTBOTTOM, HTBOTTOMLEFT, HTBOTTOMRIGHT, | ||
| HTCLIENT, HTLEFT, HTNOWHERE, HTRIGHT, HTTOP, HTTOPLEFT, HTTOPRIGHT, | ||
| }, | ||
| }, | ||
| }, | ||
| }; | ||
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| use super::get_function; | ||
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| #[inline] | ||
| pub fn MAKELPARAM(x: i16, y: i16) -> LPARAM { | ||
| LPARAM(((x as u16 as u32) | ((y as u16 as u32) << 16)) as usize as _) | ||
| } | ||
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| #[inline] | ||
| pub fn begin_resize_drag(hwnd: isize, edge: isize, button: u32, x: i32, y: i32) { | ||
| unsafe { | ||
| let w_param = WPARAM(edge as _); | ||
| let l_param = MAKELPARAM(x as i16, y as i16); | ||
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| ReleaseCapture(); | ||
| PostMessageW(HWND(hwnd), button, w_param, l_param); | ||
| } | ||
| } | ||
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| type GetDpiForWindow = unsafe extern "system" fn(hwnd: HWND) -> u32; | ||
| type GetDpiForMonitor = unsafe extern "system" fn( | ||
| hmonitor: HMONITOR, | ||
| dpi_type: MONITOR_DPI_TYPE, | ||
| dpi_x: *mut u32, | ||
| dpi_y: *mut u32, | ||
| ) -> HRESULT; | ||
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| static GET_DPI_FOR_WINDOW: Lazy<Option<GetDpiForWindow>> = | ||
| Lazy::new(|| get_function!("user32.dll", GetDpiForWindow)); | ||
| static GET_DPI_FOR_MONITOR: Lazy<Option<GetDpiForMonitor>> = | ||
| Lazy::new(|| get_function!("shcore.dll", GetDpiForMonitor)); | ||
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| const BASE_DPI: u32 = 96; | ||
| fn dpi_to_scale_factor(dpi: u32) -> f64 { | ||
| dpi as f64 / BASE_DPI as f64 | ||
| } | ||
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| unsafe fn hwnd_dpi(hwnd: HWND) -> u32 { | ||
| let hdc = GetDC(hwnd); | ||
| if hdc.is_invalid() { | ||
| panic!("[tao] `GetDC` returned null!"); | ||
| } | ||
| if let Some(GetDpiForWindow) = *GET_DPI_FOR_WINDOW { | ||
| // We are on Windows 10 Anniversary Update (1607) or later. | ||
| match GetDpiForWindow(hwnd) { | ||
| 0 => BASE_DPI, // 0 is returned if hwnd is invalid | ||
| dpi => dpi as u32, | ||
| } | ||
| } else if let Some(GetDpiForMonitor) = *GET_DPI_FOR_MONITOR { | ||
| // We are on Windows 8.1 or later. | ||
| let monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST); | ||
| if monitor.is_invalid() { | ||
| return BASE_DPI; | ||
| } | ||
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| let mut dpi_x = 0; | ||
| let mut dpi_y = 0; | ||
| if GetDpiForMonitor(monitor, MDT_EFFECTIVE_DPI, &mut dpi_x, &mut dpi_y).is_ok() { | ||
| dpi_x as u32 | ||
| } else { | ||
| BASE_DPI | ||
| } | ||
| } else { | ||
| // We are on Vista or later. | ||
| if IsProcessDPIAware().as_bool() { | ||
| // If the process is DPI aware, then scaling must be handled by the application using | ||
| // this DPI value. | ||
| GetDeviceCaps(hdc, LOGPIXELSX) as u32 | ||
| } else { | ||
| // If the process is DPI unaware, then scaling is performed by the OS; we thus return | ||
| // 96 (scale factor 1.0) to prevent the window from being re-scaled by both the | ||
| // application and the WM. | ||
| BASE_DPI | ||
| } | ||
| } | ||
| } | ||
|
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| const BORDERLESS_RESIZE_INSET: i32 = 5; | ||
|
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| pub fn hit_test(hwnd: isize, cx: i32, cy: i32) -> LRESULT { | ||
| let hwnd = HWND(hwnd); | ||
| let mut window_rect = RECT::default(); | ||
| unsafe { | ||
| if GetWindowRect(hwnd, <*mut _>::cast(&mut window_rect)).as_bool() { | ||
| const CLIENT: isize = 0b0000; | ||
| const LEFT: isize = 0b0001; | ||
| const RIGHT: isize = 0b0010; | ||
| const TOP: isize = 0b0100; | ||
| const BOTTOM: isize = 0b1000; | ||
| const TOPLEFT: isize = TOP | LEFT; | ||
| const TOPRIGHT: isize = TOP | RIGHT; | ||
| const BOTTOMLEFT: isize = BOTTOM | LEFT; | ||
| const BOTTOMRIGHT: isize = BOTTOM | RIGHT; | ||
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| let RECT { | ||
| left, | ||
| right, | ||
| bottom, | ||
| top, | ||
| } = window_rect; | ||
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| let dpi = hwnd_dpi(hwnd); | ||
| let scale_factor = dpi_to_scale_factor(dpi); | ||
| let inset = (BORDERLESS_RESIZE_INSET as f64 * scale_factor) as i32; | ||
|
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| #[rustfmt::skip] | ||
| let result = | ||
| (LEFT * (if cx < (left + inset) { 1 } else { 0 })) | ||
| | (RIGHT * (if cx >= (right - inset) { 1 } else { 0 })) | ||
| | (TOP * (if cy < (top + inset) { 1 } else { 0 })) | ||
| | (BOTTOM * (if cy >= (bottom - inset) { 1 } else { 0 })); | ||
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| LRESULT(match result { | ||
| CLIENT => HTCLIENT, | ||
| LEFT => HTLEFT, | ||
| RIGHT => HTRIGHT, | ||
| TOP => HTTOP, | ||
| BOTTOM => HTBOTTOM, | ||
| TOPLEFT => HTTOPLEFT, | ||
| TOPRIGHT => HTTOPRIGHT, | ||
| BOTTOMLEFT => HTBOTTOMLEFT, | ||
| BOTTOMRIGHT => HTBOTTOMRIGHT, | ||
| _ => HTNOWHERE, | ||
| } as _) | ||
| } else { | ||
| LRESULT(HTNOWHERE as _) | ||
| } | ||
| } | ||
| } |