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Implement win32 initialization in a cleaner way

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This commit is contained in:
Pierre Krieger 2015-01-14 10:04:28 +01:00
parent 9884908240
commit e9a775c6b1
3 changed files with 49 additions and 29 deletions
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27
src/lib.rs
View file

@ -217,6 +217,33 @@ impl BuilderAttribs<'static> {
}
}
impl<'a> BuilderAttribs<'a> {
fn extract_non_static(mut self) -> (BuilderAttribs<'static>, Option<&'a winimpl::Window>) {
let sharing = self.sharing.take();
let new_attribs = BuilderAttribs {
headless: self.headless,
strict: self.strict,
sharing: None,
dimensions: self.dimensions,
title: self.title,
monitor: self.monitor,
gl_version: self.gl_version,
gl_debug: self.gl_debug,
vsync: self.vsync,
visible: self.visible,
multisampling: self.multisampling,
depth_bits: self.depth_bits,
stencil_bits: self.stencil_bits,
color_bits: self.color_bits,
alpha_bits: self.alpha_bits,
stereoscopy: self.stereoscopy,
};
(new_attribs, sharing)
}
}
#[cfg(feature = "window")]
impl<'a> WindowBuilder<'a> {
/// Initializes a new `WindowBuilder` with default values.

37
src/win32/init.rs
View file

@ -2,6 +2,7 @@ use std::sync::atomic::AtomicBool;
use std::ptr;
use super::event;
use super::Window;
use BuilderAttribs;
use {CreationError, Event};
use CreationError::OsError;
@ -27,18 +28,14 @@ thread_local!(static WINDOW: Rc<RefCell<Option<(winapi::HWND, Sender<Event>)>>>
pub struct ContextHack(pub winapi::HGLRC);
unsafe impl Send for ContextHack {}
pub fn new_window(builder_dimensions: Option<(u32, u32)>, builder_title: String,
builder_monitor: Option<super::MonitorID>,
builder_gl_version: Option<(u32, u32)>, builder_debug: bool,
builder_vsync: bool, builder_hidden: bool,
builder_sharelists: Option<ContextHack>, builder_multisampling: Option<u16>)
pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<ContextHack>)
-> Result<Window, CreationError>
{
use std::mem;
use std::os;
// initializing variables to be sent to the task
let title = builder_title.as_slice().utf16_units()
let title = builder.title.as_slice().utf16_units()
.chain(Some(0).into_iter()).collect::<Vec<u16>>(); // title to utf16
//let hints = hints.clone();
let (tx, rx) = channel();
@ -80,15 +77,15 @@ pub fn new_window(builder_dimensions: Option<(u32, u32)>, builder_title: String,
// building a RECT object with coordinates
let mut rect = winapi::RECT {
left: 0, right: builder_dimensions.unwrap_or((1024, 768)).0 as winapi::LONG,
top: 0, bottom: builder_dimensions.unwrap_or((1024, 768)).1 as winapi::LONG,
left: 0, right: builder.dimensions.unwrap_or((1024, 768)).0 as winapi::LONG,
top: 0, bottom: builder.dimensions.unwrap_or((1024, 768)).1 as winapi::LONG,
};
// switching to fullscreen if necessary
// this means adjusting the window's position so that it overlaps the right monitor,
// and change the monitor's resolution if necessary
if builder_monitor.is_some() {
let monitor = builder_monitor.as_ref().unwrap();
if builder.monitor.is_some() {
let monitor = builder.monitor.as_ref().unwrap();
// adjusting the rect
{
@ -117,7 +114,7 @@ pub fn new_window(builder_dimensions: Option<(u32, u32)>, builder_title: String,
}
// computing the style and extended style of the window
let (ex_style, style) = if builder_monitor.is_some() {
let (ex_style, style) = if builder.monitor.is_some() {
(winapi::WS_EX_APPWINDOW, winapi::WS_POPUP | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN)
} else {
(winapi::WS_EX_APPWINDOW | winapi::WS_EX_WINDOWEDGE,
@ -250,13 +247,13 @@ pub fn new_window(builder_dimensions: Option<(u32, u32)>, builder_title: String,
// creating the real window this time
let real_window = unsafe {
let (width, height) = if builder_monitor.is_some() || builder_dimensions.is_some() {
let (width, height) = if builder.monitor.is_some() || builder.dimensions.is_some() {
(Some(rect.right - rect.left), Some(rect.bottom - rect.top))
} else {
(None, None)
};
let style = if builder_hidden {
let style = if !builder.visible || builder.headless {
style
} else {
style | winapi::WS_VISIBLE
@ -265,8 +262,8 @@ pub fn new_window(builder_dimensions: Option<(u32, u32)>, builder_title: String,
let handle = user32::CreateWindowExW(ex_style, class_name.as_ptr(),
title.as_ptr() as winapi::LPCWSTR,
style | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN,
if builder_monitor.is_some() { 0 } else { winapi::CW_USEDEFAULT },
if builder_monitor.is_some() { 0 } else { winapi::CW_USEDEFAULT },
if builder.monitor.is_some() { 0 } else { winapi::CW_USEDEFAULT },
if builder.monitor.is_some() { 0 } else { winapi::CW_USEDEFAULT },
width.unwrap_or(winapi::CW_USEDEFAULT), height.unwrap_or(winapi::CW_USEDEFAULT),
ptr::null_mut(), ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
ptr::null_mut());
@ -309,15 +306,15 @@ pub fn new_window(builder_dimensions: Option<(u32, u32)>, builder_title: String,
let mut attributes = Vec::new();
if builder_gl_version.is_some() {
let version = builder_gl_version.as_ref().unwrap();
if builder.gl_version.is_some() {
let version = builder.gl_version.as_ref().unwrap();
attributes.push(gl::wgl_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
attributes.push(version.0 as libc::c_int);
attributes.push(gl::wgl_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
attributes.push(version.1 as libc::c_int);
}
if builder_debug {
if builder.gl_debug {
attributes.push(gl::wgl_extra::CONTEXT_FLAGS_ARB as libc::c_int);
attributes.push(gl::wgl_extra::CONTEXT_DEBUG_BIT_ARB as libc::c_int);
}
@ -351,7 +348,7 @@ pub fn new_window(builder_dimensions: Option<(u32, u32)>, builder_title: String,
};
// calling SetForegroundWindow if fullscreen
if builder_monitor.is_some() {
if builder.monitor.is_some() {
unsafe { user32::SetForegroundWindow(real_window) };
}
@ -381,7 +378,7 @@ pub fn new_window(builder_dimensions: Option<(u32, u32)>, builder_title: String,
};
// handling vsync
if builder_vsync {
if builder.vsync {
if extra_functions.SwapIntervalEXT.is_loaded() {
unsafe { gl::wgl::MakeCurrent(hdc as *const libc::c_void, context) };
if unsafe { extra_functions.SwapIntervalEXT(1) } == 0 {

14
src/win32/mod.rs
View file

@ -26,10 +26,8 @@ pub struct HeadlessContext(Window);
impl HeadlessContext {
/// See the docs in the crate root file.
pub fn new(builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
let BuilderAttribs { dimensions, gl_version, gl_debug, .. } = builder;
init::new_window(dimensions, "".to_string(), None, gl_version, gl_debug, false, true,
None, None)
.map(|w| HeadlessContext(w))
let (builder, _) = builder.extract_non_static();
init::new_window(builder, None).map(|w| HeadlessContext(w))
}
/// See the docs in the crate root file.
@ -86,11 +84,9 @@ unsafe impl Sync for Window {}
impl Window {
/// See the docs in the crate root file.
pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
let BuilderAttribs { dimensions, title, monitor, gl_version,
gl_debug, vsync, visible, sharing, multisampling, .. } = builder;
init::new_window(dimensions, title, monitor, gl_version, gl_debug, vsync,
!visible, sharing.map(|w| init::ContextHack(w.context)),
multisampling)
let (builder, sharing) = builder.extract_non_static();
let sharing = sharing.map(|w| init::ContextHack(w.context));
init::new_window(builder, sharing)
}
}