/
main.rs
525 lines (417 loc) · 17.3 KB
/
main.rs
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use windows::{core::*, Foundation::Numerics::*, Win32::Foundation::*, Win32::Graphics::Direct2D::Common::*, Win32::Graphics::Direct2D::*, Win32::Graphics::Direct3D::*, Win32::Graphics::Direct3D11::*, Win32::Graphics::Dxgi::Common::*, Win32::Graphics::Dxgi::*, Win32::Graphics::Gdi::*, Win32::System::Com::*, Win32::System::LibraryLoader::*, Win32::System::Performance::*, Win32::System::SystemInformation::GetLocalTime, Win32::UI::Animation::*, Win32::UI::WindowsAndMessaging::*};
fn main() -> Result<()> {
unsafe {
CoInitializeEx(std::ptr::null_mut(), COINIT_MULTITHREADED)?;
}
let mut window = Window::new()?;
window.run()
}
struct Window {
handle: HWND,
factory: ID2D1Factory1,
dxfactory: IDXGIFactory2,
style: ID2D1StrokeStyle,
manager: IUIAnimationManager,
variable: IUIAnimationVariable,
target: Option<ID2D1DeviceContext>,
swapchain: Option<IDXGISwapChain1>,
brush: Option<ID2D1SolidColorBrush>,
shadow: Option<ID2D1Effect>,
clock: Option<ID2D1Bitmap1>,
dpi: f32,
visible: bool,
occlusion: u32,
frequency: i64,
angles: Angles,
}
#[derive(Default)]
struct Angles {
second: f32,
minute: f32,
hour: f32,
}
impl Angles {
fn now() -> Self {
let mut time = Default::default();
unsafe { GetLocalTime(&mut time) };
let second = (time.wSecond as f32 + time.wMilliseconds as f32 / 1000.0) * 6.0;
let minute = time.wMinute as f32 * 6.0 + second / 60.0;
let hour = (time.wHour % 12) as f32 * 30.0 + minute / 12.0;
Self { second, minute, hour }
}
}
impl Window {
fn new() -> Result<Self> {
let factory = create_factory()?;
let dxfactory: IDXGIFactory2 = unsafe { CreateDXGIFactory1()? };
let style = create_style(&factory)?;
let manager: IUIAnimationManager = unsafe { CoCreateInstance(&UIAnimationManager, None, CLSCTX_ALL)? };
let transition = create_transition()?;
let mut dpi = 0.0;
let mut dpiy = 0.0;
unsafe { factory.GetDesktopDpi(&mut dpi, &mut dpiy) };
let mut frequency = 0;
unsafe { QueryPerformanceFrequency(&mut frequency).ok()? };
let variable = unsafe {
let variable = manager.CreateAnimationVariable(0.0)?;
manager.ScheduleTransition(&variable, transition, get_time(frequency)?)?;
variable
};
Ok(Window {
handle: HWND(0),
factory,
dxfactory,
style,
manager,
variable,
target: None,
swapchain: None,
brush: None,
shadow: None,
clock: None,
dpi,
visible: false,
occlusion: 0,
frequency,
angles: Angles::now(),
})
}
fn render(&mut self) -> Result<()> {
if self.target.is_none() {
let device = create_device()?;
let target = create_render_target(&self.factory, &device)?;
unsafe { target.SetDpi(self.dpi, self.dpi) };
let swapchain = create_swapchain(&device, self.handle)?;
create_swapchain_bitmap(&swapchain, &target)?;
self.brush = create_brush(&target).ok();
self.target = Some(target);
self.swapchain = Some(swapchain);
self.create_device_size_resources()?;
}
let target = self.target.as_ref().unwrap();
unsafe { target.BeginDraw() };
self.draw(target)?;
unsafe {
target.EndDraw(std::ptr::null_mut(), std::ptr::null_mut())?;
}
if let Err(error) = self.present(1, 0) {
if error.code() == DXGI_STATUS_OCCLUDED {
self.occlusion = unsafe { self.dxfactory.RegisterOcclusionStatusWindow(self.handle, WM_USER)? };
self.visible = false;
} else {
self.release_device();
}
}
Ok(())
}
fn release_device(&mut self) {
self.target = None;
self.swapchain = None;
self.release_device_resources();
}
fn release_device_resources(&mut self) {
self.brush = None;
self.clock = None;
self.shadow = None;
}
fn present(&self, sync: u32, flags: u32) -> Result<()> {
unsafe { self.swapchain.as_ref().unwrap().Present(sync, flags) }
}
fn draw(&self, target: &ID2D1DeviceContext) -> Result<()> {
let clock = self.clock.as_ref().unwrap();
let shadow = self.shadow.as_ref().unwrap();
unsafe {
self.manager.Update(get_time(self.frequency)?)?;
target.Clear(&D2D1_COLOR_F { r: 1.0, g: 1.0, b: 1.0, a: 1.0 });
let mut previous = None;
target.GetTarget(&mut previous);
target.SetTarget(clock);
target.Clear(std::ptr::null());
self.draw_clock()?;
target.SetTarget(previous);
target.SetTransform(&Matrix3x2::translation(5.0, 5.0));
let mut output = None;
shadow.GetOutput(&mut output);
target.DrawImage(output, std::ptr::null(), std::ptr::null(), D2D1_INTERPOLATION_MODE_LINEAR, D2D1_COMPOSITE_MODE_SOURCE_OVER);
target.SetTransform(&Matrix3x2::identity());
target.DrawImage(clock, std::ptr::null(), std::ptr::null(), D2D1_INTERPOLATION_MODE_LINEAR, D2D1_COMPOSITE_MODE_SOURCE_OVER);
}
Ok(())
}
fn draw_clock(&self) -> Result<()> {
let target = self.target.as_ref().unwrap();
let brush = self.brush.as_ref().unwrap();
let size = unsafe { target.GetSize() };
let radius = size.width.min(size.height).max(200.0) / 2.0 - 50.0;
let translation = Matrix3x2::translation(size.width / 2.0, size.height / 2.0);
unsafe { target.SetTransform(&translation) };
let ellipse = D2D1_ELLIPSE { point: D2D_POINT_2F::default(), radiusX: radius, radiusY: radius };
let swing = unsafe {
target.DrawEllipse(&ellipse, brush, radius / 20.0, None);
self.variable.GetValue()?
};
let mut angles = Angles::now();
if swing < 1.0 {
if self.angles.second > angles.second {
angles.second += 360.0;
}
if self.angles.minute > angles.minute {
angles.minute += 360.0;
}
if self.angles.hour > angles.hour {
angles.hour += 360.0;
}
angles.second *= swing as f32;
angles.minute *= swing as f32;
angles.hour *= swing as f32;
}
unsafe {
target.SetTransform(&(Matrix3x2::rotation(angles.second, 0.0, 0.0) * translation));
target.DrawLine(D2D_POINT_2F::default(), D2D_POINT_2F { x: 0.0, y: -(radius * 0.75) }, brush, radius / 25.0, &self.style);
target.SetTransform(&(Matrix3x2::rotation(angles.minute, 0.0, 0.0) * translation));
target.DrawLine(D2D_POINT_2F::default(), D2D_POINT_2F { x: 0.0, y: -(radius * 0.75) }, brush, radius / 15.0, &self.style);
target.SetTransform(&(Matrix3x2::rotation(angles.hour, 0.0, 0.0) * translation));
target.DrawLine(D2D_POINT_2F::default(), D2D_POINT_2F { x: 0.0, y: -(radius * 0.5) }, brush, radius / 10.0, &self.style);
}
Ok(())
}
fn create_device_size_resources(&mut self) -> Result<()> {
let target = self.target.as_ref().unwrap();
let clock = self.create_clock(target)?;
self.shadow = create_shadow(target, &clock).ok();
self.clock = Some(clock);
Ok(())
}
fn create_clock(&self, target: &ID2D1DeviceContext) -> Result<ID2D1Bitmap1> {
let size_f = unsafe { target.GetSize() };
let size_u = D2D_SIZE_U { width: (size_f.width * self.dpi / 96.0) as u32, height: (size_f.height * self.dpi / 96.0) as u32 };
let properties = D2D1_BITMAP_PROPERTIES1 {
pixelFormat: D2D1_PIXEL_FORMAT { format: DXGI_FORMAT_B8G8R8A8_UNORM, alphaMode: D2D1_ALPHA_MODE_PREMULTIPLIED },
dpiX: self.dpi,
dpiY: self.dpi,
bitmapOptions: D2D1_BITMAP_OPTIONS_TARGET,
colorContext: None,
};
unsafe { target.CreateBitmap2(size_u, std::ptr::null(), 0, &properties) }
}
fn resize_swapchain_bitmap(&mut self) -> Result<()> {
if let Some(target) = &self.target {
let swapchain = self.swapchain.as_ref().unwrap();
unsafe { target.SetTarget(None) };
if unsafe { swapchain.ResizeBuffers(0, 0, 0, DXGI_FORMAT_UNKNOWN, 0).is_ok() } {
create_swapchain_bitmap(swapchain, target)?;
self.create_device_size_resources()?;
} else {
self.release_device();
}
self.render()?;
}
Ok(())
}
fn message_handler(&mut self, message: u32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
unsafe {
match message {
WM_PAINT => {
let mut ps = PAINTSTRUCT::default();
BeginPaint(self.handle, &mut ps);
self.render().unwrap();
EndPaint(self.handle, &ps);
LRESULT(0)
}
WM_SIZE => {
if wparam.0 != SIZE_MINIMIZED as usize {
self.resize_swapchain_bitmap().unwrap();
}
LRESULT(0)
}
WM_DISPLAYCHANGE => {
self.render().unwrap();
LRESULT(0)
}
WM_USER => {
if self.present(0, DXGI_PRESENT_TEST).is_ok() {
self.dxfactory.UnregisterOcclusionStatus(self.occlusion);
self.occlusion = 0;
self.visible = true;
}
LRESULT(0)
}
WM_ACTIVATE => {
self.visible = true; // TODO: unpack !HIWORD(wparam);
LRESULT(0)
}
WM_DESTROY => {
PostQuitMessage(0);
LRESULT(0)
}
_ => DefWindowProcA(self.handle, message, wparam, lparam),
}
}
}
fn run(&mut self) -> Result<()> {
unsafe {
let instance = GetModuleHandleA(None);
debug_assert!(instance.0 != 0);
let wc = WNDCLASSA {
hCursor: LoadCursorW(None, IDC_HAND),
hInstance: instance,
lpszClassName: PSTR(b"window\0".as_ptr()),
style: CS_HREDRAW | CS_VREDRAW,
lpfnWndProc: Some(Self::wndproc),
..Default::default()
};
let atom = RegisterClassA(&wc);
debug_assert!(atom != 0);
let handle = CreateWindowExA(Default::default(), PSTR(b"window\0".as_ptr()), PSTR(b"Sample Window\0".as_ptr()), WS_OVERLAPPEDWINDOW | WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, None, None, instance, self as *mut _ as _);
debug_assert!(handle.0 != 0);
debug_assert!(handle == self.handle);
let mut message = MSG::default();
loop {
if self.visible {
self.render()?;
while PeekMessageA(&mut message, None, 0, 0, PM_REMOVE).into() {
if message.message == WM_QUIT {
return Ok(());
}
DispatchMessageA(&message);
}
} else {
GetMessageA(&mut message, None, 0, 0);
if message.message == WM_QUIT {
return Ok(());
}
DispatchMessageA(&message);
}
}
}
}
extern "system" fn wndproc(window: HWND, message: u32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
unsafe {
if message == WM_NCCREATE {
let cs = lparam.0 as *const CREATESTRUCTA;
let this = (*cs).lpCreateParams as *mut Self;
(*this).handle = window;
SetWindowLong(window, GWLP_USERDATA, this as _);
} else {
let this = GetWindowLong(window, GWLP_USERDATA) as *mut Self;
if !this.is_null() {
return (*this).message_handler(message, wparam, lparam);
}
}
DefWindowProcA(window, message, wparam, lparam)
}
}
}
fn get_time(frequency: i64) -> Result<f64> {
unsafe {
let mut time = 0;
QueryPerformanceCounter(&mut time).ok()?;
Ok(time as f64 / frequency as f64)
}
}
fn create_brush(target: &ID2D1DeviceContext) -> Result<ID2D1SolidColorBrush> {
let color = D2D1_COLOR_F { r: 0.92, g: 0.38, b: 0.208, a: 1.0 };
let properties = D2D1_BRUSH_PROPERTIES { opacity: 0.8, transform: Matrix3x2::identity() };
unsafe { target.CreateSolidColorBrush(&color, &properties) }
}
fn create_shadow(target: &ID2D1DeviceContext, clock: &ID2D1Bitmap1) -> Result<ID2D1Effect> {
unsafe {
let shadow = target.CreateEffect(&CLSID_D2D1Shadow)?;
shadow.SetInput(0, clock, true);
Ok(shadow)
}
}
fn create_factory() -> Result<ID2D1Factory1> {
let mut options = D2D1_FACTORY_OPTIONS::default();
if cfg!(debug_assertions) {
options.debugLevel = D2D1_DEBUG_LEVEL_INFORMATION;
}
let mut result = None;
unsafe { D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &ID2D1Factory1::IID, &options, std::mem::transmute(&mut result)).map(|()| result.unwrap()) }
}
fn create_style(factory: &ID2D1Factory1) -> Result<ID2D1StrokeStyle> {
let props = D2D1_STROKE_STYLE_PROPERTIES { startCap: D2D1_CAP_STYLE_ROUND, endCap: D2D1_CAP_STYLE_TRIANGLE, ..Default::default() };
unsafe { factory.CreateStrokeStyle(&props, std::ptr::null(), 0) }
}
fn create_transition() -> Result<IUIAnimationTransition> {
unsafe {
let library: IUIAnimationTransitionLibrary = CoCreateInstance(&UIAnimationTransitionLibrary, None, CLSCTX_ALL)?;
library.CreateAccelerateDecelerateTransition(5.0, 1.0, 0.2, 0.8)
}
}
fn create_device_with_type(drive_type: D3D_DRIVER_TYPE) -> Result<ID3D11Device> {
let mut flags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
if cfg!(debug_assertions) {
flags |= D3D11_CREATE_DEVICE_DEBUG;
}
let mut device = None;
unsafe { D3D11CreateDevice(None, drive_type, HINSTANCE::default(), flags, std::ptr::null(), 0, D3D11_SDK_VERSION, &mut device, std::ptr::null_mut(), &mut None).map(|()| device.unwrap()) }
}
fn create_device() -> Result<ID3D11Device> {
let mut result = create_device_with_type(D3D_DRIVER_TYPE_HARDWARE);
if let Err(err) = &result {
if err.code() == DXGI_ERROR_UNSUPPORTED {
result = create_device_with_type(D3D_DRIVER_TYPE_WARP);
}
}
result
}
fn create_render_target(factory: &ID2D1Factory1, device: &ID3D11Device) -> Result<ID2D1DeviceContext> {
unsafe {
let d2device = factory.CreateDevice(device.cast::<IDXGIDevice>()?)?;
let target = d2device.CreateDeviceContext(D2D1_DEVICE_CONTEXT_OPTIONS_NONE)?;
target.SetUnitMode(D2D1_UNIT_MODE_DIPS);
Ok(target)
}
}
fn get_dxgi_factory(device: &ID3D11Device) -> Result<IDXGIFactory2> {
let dxdevice = device.cast::<IDXGIDevice>()?;
unsafe { dxdevice.GetAdapter()?.GetParent() }
}
fn create_swapchain_bitmap(swapchain: &IDXGISwapChain1, target: &ID2D1DeviceContext) -> Result<()> {
let surface: IDXGISurface = unsafe { swapchain.GetBuffer(0)? };
let props = D2D1_BITMAP_PROPERTIES1 {
pixelFormat: D2D1_PIXEL_FORMAT { format: DXGI_FORMAT_B8G8R8A8_UNORM, alphaMode: D2D1_ALPHA_MODE_IGNORE },
dpiX: 96.0,
dpiY: 96.0,
bitmapOptions: D2D1_BITMAP_OPTIONS_TARGET | D2D1_BITMAP_OPTIONS_CANNOT_DRAW,
colorContext: None,
};
unsafe {
let bitmap = target.CreateBitmapFromDxgiSurface(&surface, &props)?;
target.SetTarget(bitmap);
};
Ok(())
}
fn create_swapchain(device: &ID3D11Device, window: HWND) -> Result<IDXGISwapChain1> {
let factory = get_dxgi_factory(device)?;
let props = DXGI_SWAP_CHAIN_DESC1 {
Format: DXGI_FORMAT_B8G8R8A8_UNORM,
SampleDesc: DXGI_SAMPLE_DESC { Count: 1, Quality: 0 },
BufferUsage: DXGI_USAGE_RENDER_TARGET_OUTPUT,
BufferCount: 2,
SwapEffect: DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL,
..Default::default()
};
unsafe { factory.CreateSwapChainForHwnd(device, window, &props, std::ptr::null(), None) }
}
#[allow(non_snake_case)]
#[cfg(target_pointer_width = "32")]
unsafe fn SetWindowLong(window: HWND, index: WINDOW_LONG_PTR_INDEX, value: isize) -> isize {
SetWindowLongA(window, index, value as _) as _
}
#[allow(non_snake_case)]
#[cfg(target_pointer_width = "64")]
unsafe fn SetWindowLong(window: HWND, index: WINDOW_LONG_PTR_INDEX, value: isize) -> isize {
SetWindowLongPtrA(window, index, value)
}
#[allow(non_snake_case)]
#[cfg(target_pointer_width = "32")]
unsafe fn GetWindowLong(window: HWND, index: WINDOW_LONG_PTR_INDEX) -> isize {
GetWindowLongA(window, index) as _
}
#[allow(non_snake_case)]
#[cfg(target_pointer_width = "64")]
unsafe fn GetWindowLong(window: HWND, index: WINDOW_LONG_PTR_INDEX) -> isize {
GetWindowLongPtrA(window, index)
}