|
| 1 | +pub fn is_other_window_fullscreen() -> bool { |
| 2 | + #[cfg(target_os = "windows")] |
| 3 | + return is_fullscreen_windows(); |
| 4 | + |
| 5 | + #[cfg(target_os = "macos")] |
| 6 | + return is_fullscreen_macos(); |
| 7 | + |
| 8 | + #[cfg(target_os = "linux")] |
| 9 | + return is_fullscreen_linux(); |
| 10 | +} |
| 11 | + |
| 12 | +#[cfg(target_os = "windows")] |
| 13 | +fn is_fullscreen_windows() -> bool { |
| 14 | + use std::ffi::c_void; |
| 15 | + use std::mem::zeroed; |
| 16 | + |
| 17 | + #[repr(C)] |
| 18 | + struct RECT { |
| 19 | + left: i32, |
| 20 | + top: i32, |
| 21 | + right: i32, |
| 22 | + bottom: i32, |
| 23 | + } |
| 24 | + |
| 25 | + #[repr(C)] |
| 26 | + struct MONITORINFO { |
| 27 | + cb_size: u32, |
| 28 | + rc_monitor: RECT, |
| 29 | + rc_work: RECT, |
| 30 | + dw_flags: u32, |
| 31 | + } |
| 32 | + |
| 33 | + type HWND = *mut c_void; |
| 34 | + type HMONITOR = *mut c_void; |
| 35 | + |
| 36 | + #[link(name = "user32")] |
| 37 | + extern "system" { |
| 38 | + fn GetForegroundWindow() -> HWND; |
| 39 | + fn GetWindowRect(hwnd: HWND, lp_rect: *mut RECT) -> i32; |
| 40 | + fn MonitorFromWindow(hwnd: HWND, dw_flags: u32) -> HMONITOR; |
| 41 | + fn GetMonitorInfoW(h_monitor: HMONITOR, lpmi: *mut MONITORINFO) -> i32; |
| 42 | + fn GetDesktopWindow() -> HWND; |
| 43 | + fn GetShellWindow() -> HWND; |
| 44 | + } |
| 45 | + |
| 46 | + unsafe { |
| 47 | + let foreground = GetForegroundWindow(); |
| 48 | + if foreground.is_null() { |
| 49 | + return false; |
| 50 | + } |
| 51 | + |
| 52 | + let desktop = GetDesktopWindow(); |
| 53 | + let shell = GetShellWindow(); |
| 54 | + if foreground == desktop || foreground == shell { |
| 55 | + return false; |
| 56 | + } |
| 57 | + |
| 58 | + let mut window_rect: RECT = zeroed(); |
| 59 | + if GetWindowRect(foreground, &mut window_rect) == 0 { |
| 60 | + return false; |
| 61 | + } |
| 62 | + |
| 63 | + let monitor = MonitorFromWindow(foreground, 0x00000002); |
| 64 | + if monitor.is_null() { |
| 65 | + return false; |
| 66 | + } |
| 67 | + |
| 68 | + let mut monitor_info: MONITORINFO = zeroed(); |
| 69 | + monitor_info.cb_size = std::mem::size_of::<MONITORINFO>() as u32; |
| 70 | + if GetMonitorInfoW(monitor, &mut monitor_info) == 0 { |
| 71 | + return false; |
| 72 | + } |
| 73 | + |
| 74 | + let screen = &monitor_info.rc_monitor; |
| 75 | + window_rect.left <= screen.left |
| 76 | + && window_rect.top <= screen.top |
| 77 | + && window_rect.right >= screen.right |
| 78 | + && window_rect.bottom >= screen.bottom |
| 79 | + } |
| 80 | +} |
| 81 | + |
| 82 | +#[cfg(target_os = "macos")] |
| 83 | +fn is_fullscreen_macos() -> bool { |
| 84 | + use std::ffi::c_void; |
| 85 | + use std::ptr::null; |
| 86 | + |
| 87 | + type CFTypeRef = *const c_void; |
| 88 | + |
| 89 | + #[link(name = "CoreGraphics", kind = "framework")] |
| 90 | + extern "C" { |
| 91 | + fn CGWindowListCopyWindowInfo(option: u32, relative_to_window: u32) -> CFTypeRef; |
| 92 | + } |
| 93 | + |
| 94 | + #[link(name = "CoreFoundation", kind = "framework")] |
| 95 | + extern "C" { |
| 96 | + fn CFArrayGetCount(the_array: CFTypeRef) -> isize; |
| 97 | + fn CFArrayGetValueAtIndex(the_array: CFTypeRef, idx: isize) -> CFTypeRef; |
| 98 | + fn CFDictionaryGetValue(the_dict: CFTypeRef, key: CFTypeRef) -> CFTypeRef; |
| 99 | + fn CFNumberGetValue(number: CFTypeRef, the_type: isize, value_ptr: *mut c_void) -> u8; |
| 100 | + fn CFRelease(cf: CFTypeRef); |
| 101 | + fn CFStringCreateWithCString(alloc: CFTypeRef, c_str: *const i8, encoding: u32) -> CFTypeRef; |
| 102 | + } |
| 103 | + |
| 104 | + unsafe { |
| 105 | + let window_list = CGWindowListCopyWindowInfo(1, 0); |
| 106 | + if window_list.is_null() { |
| 107 | + return false; |
| 108 | + } |
| 109 | + |
| 110 | + let count = CFArrayGetCount(window_list); |
| 111 | + let layer_key = CFStringCreateWithCString(null(), b"kCGWindowLayer\0".as_ptr() as *const i8, 0x08000100); |
| 112 | + |
| 113 | + let mut result = false; |
| 114 | + for i in 0..count { |
| 115 | + let window_info = CFArrayGetValueAtIndex(window_list, i); |
| 116 | + if window_info.is_null() { |
| 117 | + continue; |
| 118 | + } |
| 119 | + |
| 120 | + let layer_value = CFDictionaryGetValue(window_info, layer_key); |
| 121 | + if !layer_value.is_null() { |
| 122 | + let mut layer: i32 = 0; |
| 123 | + if CFNumberGetValue(layer_value, 9, &mut layer as *mut i32 as *mut c_void) != 0 && layer == 0 && i == 0 { |
| 124 | + result = true; |
| 125 | + break; |
| 126 | + } |
| 127 | + } |
| 128 | + } |
| 129 | + |
| 130 | + CFRelease(layer_key); |
| 131 | + CFRelease(window_list); |
| 132 | + result |
| 133 | + } |
| 134 | +} |
| 135 | + |
| 136 | +#[cfg(target_os = "linux")] |
| 137 | +fn is_fullscreen_linux() -> bool { |
| 138 | + use std::ffi::{c_char, c_int, c_long, c_uchar, c_ulong, c_void}; |
| 139 | + use std::ptr::null_mut; |
| 140 | + |
| 141 | + type Display = c_void; |
| 142 | + type Window = c_ulong; |
| 143 | + type Atom = c_ulong; |
| 144 | + |
| 145 | + #[link(name = "X11")] |
| 146 | + extern "C" { |
| 147 | + fn XOpenDisplay(display_name: *const c_char) -> *mut Display; |
| 148 | + fn XCloseDisplay(display: *mut Display) -> c_int; |
| 149 | + fn XDefaultRootWindow(display: *mut Display) -> Window; |
| 150 | + fn XInternAtom(display: *mut Display, atom_name: *const c_char, only_if_exists: c_int) -> Atom; |
| 151 | + fn XGetWindowProperty( |
| 152 | + display: *mut Display, w: Window, property: Atom, long_offset: c_long, long_length: c_long, |
| 153 | + delete: c_int, req_type: Atom, actual_type_return: *mut Atom, actual_format_return: *mut c_int, |
| 154 | + nitems_return: *mut c_ulong, bytes_after_return: *mut c_ulong, prop_return: *mut *mut c_uchar, |
| 155 | + ) -> c_int; |
| 156 | + fn XFree(data: *mut c_void) -> c_int; |
| 157 | + } |
| 158 | + |
| 159 | + unsafe { |
| 160 | + let display = XOpenDisplay(null_mut()); |
| 161 | + if display.is_null() { |
| 162 | + return false; |
| 163 | + } |
| 164 | + |
| 165 | + let root = XDefaultRootWindow(display); |
| 166 | + let net_active_window = XInternAtom(display, b"_NET_ACTIVE_WINDOW\0".as_ptr() as *const c_char, 1); |
| 167 | + let net_wm_state = XInternAtom(display, b"_NET_WM_STATE\0".as_ptr() as *const c_char, 1); |
| 168 | + let net_wm_state_fullscreen = XInternAtom(display, b"_NET_WM_STATE_FULLSCREEN\0".as_ptr() as *const c_char, 1); |
| 169 | + |
| 170 | + if net_active_window == 0 || net_wm_state == 0 || net_wm_state_fullscreen == 0 { |
| 171 | + XCloseDisplay(display); |
| 172 | + return false; |
| 173 | + } |
| 174 | + |
| 175 | + let mut actual_type: Atom = 0; |
| 176 | + let mut actual_format: c_int = 0; |
| 177 | + let mut nitems: c_ulong = 0; |
| 178 | + let mut bytes_after: c_ulong = 0; |
| 179 | + let mut prop: *mut c_uchar = null_mut(); |
| 180 | + |
| 181 | + let status = XGetWindowProperty(display, root, net_active_window, 0, 1, 0, 0, &mut actual_type, &mut actual_format, &mut nitems, &mut bytes_after, &mut prop); |
| 182 | + |
| 183 | + if status != 0 || nitems == 0 || prop.is_null() { |
| 184 | + if !prop.is_null() { XFree(prop as *mut c_void); } |
| 185 | + XCloseDisplay(display); |
| 186 | + return false; |
| 187 | + } |
| 188 | + |
| 189 | + let active_window = *(prop as *const Window); |
| 190 | + XFree(prop as *mut c_void); |
| 191 | + |
| 192 | + if active_window == 0 { |
| 193 | + XCloseDisplay(display); |
| 194 | + return false; |
| 195 | + } |
| 196 | + |
| 197 | + let status = XGetWindowProperty(display, active_window, net_wm_state, 0, 1024, 0, 0, &mut actual_type, &mut actual_format, &mut nitems, &mut bytes_after, &mut prop); |
| 198 | + |
| 199 | + let mut is_fullscreen = false; |
| 200 | + if status == 0 && nitems > 0 && !prop.is_null() { |
| 201 | + let atoms = std::slice::from_raw_parts(prop as *const Atom, nitems as usize); |
| 202 | + is_fullscreen = atoms.contains(&net_wm_state_fullscreen); |
| 203 | + XFree(prop as *mut c_void); |
| 204 | + } |
| 205 | + |
| 206 | + XCloseDisplay(display); |
| 207 | + is_fullscreen |
| 208 | + } |
| 209 | +} |
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