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Windows: implement window close method

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This commit is contained in:
Mirko Covizzi 2020-06-09 21:48:17 +02:00
parent 45ea5387b4
commit 8c2c743da4
1 changed files with 61 additions and 30 deletions
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91
src/win/window.rs
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@ -5,20 +5,20 @@ use std::ptr::null_mut;
use self::winapi::shared::guiddef::GUID;
use self::winapi::shared::minwindef::{LPARAM, LRESULT, UINT, WPARAM};
use self::winapi::shared::windef::{HGLRC, HWND};
use self::winapi::shared::windef::{HDC, HGLRC, HWND};
use self::winapi::um::combaseapi::CoCreateGuid;
use self::winapi::um::libloaderapi::{GetProcAddress, LoadLibraryA};
use self::winapi::um::wingdi::{
wglCreateContext, wglMakeCurrent, ChoosePixelFormat, SetPixelFormat, SwapBuffers,
PFD_DOUBLEBUFFER, PFD_DRAW_TO_WINDOW, PFD_MAIN_PLANE, PFD_SUPPORT_OPENGL, PFD_TYPE_RGBA,
PIXELFORMATDESCRIPTOR,
wglCreateContext, wglDeleteContext, wglMakeCurrent, ChoosePixelFormat, SetPixelFormat,
SwapBuffers, PFD_DOUBLEBUFFER, PFD_DRAW_TO_WINDOW, PFD_MAIN_PLANE, PFD_SUPPORT_OPENGL,
PFD_TYPE_RGBA, PIXELFORMATDESCRIPTOR,
};
use self::winapi::um::winuser::{
CreateWindowExA, DefWindowProcA, DispatchMessageA, GetDC, MessageBoxA, PeekMessageA,
PostQuitMessage, RegisterClassA, TranslateMessage, CS_HREDRAW, CS_OWNDC, CS_VREDRAW,
CW_USEDEFAULT, MB_ICONERROR, MB_OK, MB_TOPMOST, MSG, PM_REMOVE, WM_DESTROY, WM_QUIT, WNDCLASSA,
WS_CAPTION, WS_CHILD, WS_CLIPSIBLINGS, WS_MAXIMIZEBOX, WS_MINIMIZEBOX, WS_POPUPWINDOW,
WS_SIZEBOX, WS_VISIBLE,
CreateWindowExA, DefWindowProcA, DestroyWindow, DispatchMessageA, GetDC, MessageBoxA,
PeekMessageA, PostQuitMessage, RegisterClassA, ReleaseDC, TranslateMessage, UnregisterClassA,
CS_HREDRAW, CS_OWNDC, CS_VREDRAW, MB_ICONERROR, MB_OK, MB_TOPMOST, MSG, PM_REMOVE, WM_CLOSE,
WM_QUIT, WNDCLASSA, WS_CAPTION, WS_CHILD, WS_CLIPSIBLINGS, WS_MAXIMIZEBOX, WS_MINIMIZEBOX,
WS_POPUPWINDOW, WS_SIZEBOX, WS_VISIBLE,
};
use crate::Parent::WithParent;
@ -49,21 +49,35 @@ unsafe fn generate_guid() -> String {
)
}
pub struct Window;
pub struct Window {
hwnd: HWND,
hdc: HDC,
gl_context: HGLRC,
class_name: *const i8,
}
impl Window {
// todo: we should decide this interface
pub fn open(options: WindowOpenOptions) -> Self {
unsafe {
let mut hwnd = null_mut();
let mut hdc = null_mut();
let mut gl_context = null_mut();
// We generate a unique name for the new window class to prevent name collisions
let class_name = format!("Baseview-{}", generate_guid());
let class_name = format!("Baseview-{}", generate_guid()).as_ptr() as *const i8;
let window = Window {
hwnd,
hdc,
gl_context,
class_name,
};
let wnd_class = WNDCLASSA {
// todo: for OpenGL, will use it later
style: CS_OWNDC | CS_HREDRAW | CS_VREDRAW,
lpfnWndProc: Some(wnd_proc),
hInstance: null_mut(),
lpszClassName: class_name.as_ptr() as *const i8,
lpszClassName: class_name,
cbClsExtra: 0,
cbWndExtra: 0,
hIcon: null_mut(),
@ -71,6 +85,7 @@ impl Window {
hbrBackground: null_mut(),
lpszMenuName: std::ptr::null::<i8>(),
};
RegisterClassA(&wnd_class);
let mut flags = WS_POPUPWINDOW
@ -87,14 +102,13 @@ impl Window {
flags = WS_CHILD | WS_VISIBLE;
}
let hwnd = CreateWindowExA(
hwnd = CreateWindowExA(
0,
class_name.as_ptr() as *const i8,
class_name,
(options.title.to_owned() + "\0").as_ptr() as *const i8,
// todo: fine for now, will have to change with a parent
flags,
CW_USEDEFAULT,
CW_USEDEFAULT,
0,
0,
// todo: check if usize fits into i32
options.width as i32,
options.height as i32,
@ -104,7 +118,7 @@ impl Window {
null_mut(),
);
let hdc = GetDC(hwnd);
hdc = GetDC(hwnd);
let mut pfd: PIXELFORMATDESCRIPTOR = std::mem::zeroed();
pfd.nSize = std::mem::size_of::<PIXELFORMATDESCRIPTOR>() as u16;
@ -119,20 +133,28 @@ impl Window {
let pf_id: i32 = ChoosePixelFormat(hdc, &pfd);
if pf_id == 0 {
return Window;
// todo: use a more useful return like an Option
// todo: also launch error message boxes
return window;
}
if SetPixelFormat(hdc, pf_id, &pfd) == 0 {
return Window;
// todo: use a more useful return like an Option
// todo: also launch error message boxes
return window;
}
let gl_context: HGLRC = wglCreateContext(hdc);
gl_context = wglCreateContext(hdc);
if gl_context == 0 as HGLRC {
return Window;
// todo: use a more useful return like an Option
// todo: also launch error message boxes
return window;
}
if wglMakeCurrent(hdc, gl_context) == 0 {
return Window;
// todo: use a more useful return like an Option
// todo: also launch error message boxes
return window;
}
let h = LoadLibraryA("opengl32.dll\0".as_ptr() as *const i8);
@ -155,9 +177,20 @@ impl Window {
SwapBuffers(hdc);
}
}
}
Window
window
}
}
pub fn close(&self) {
// todo: see https://github.com/wrl/rutabaga/blob/f30ff67e157375cafdbafe5fb549f1790443a3a8/src/platform/win/window.c#L402
unsafe {
wglMakeCurrent(null_mut(), null_mut());
wglDeleteContext(self.gl_context);
ReleaseDC(self.hwnd, self.hdc);
DestroyWindow(self.hwnd);
UnregisterClassA(self.class_name, null_mut());
}
}
}
@ -184,12 +217,10 @@ unsafe extern "system" fn wnd_proc(
l_param: LPARAM,
) -> LRESULT {
match msg {
WM_DESTROY => {
WM_CLOSE => {
PostQuitMessage(0);
}
_ => {
return DefWindowProcA(hwnd, msg, w_param, l_param);
}
_ => return DefWindowProcA(hwnd, msg, w_param, l_param),
}
0
}