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use std::any::TypeId;
use std::hash::Hash;
use winapi::HWND;
use ui::Ui;
use controls::{Control, ControlT, ControlType, AnyHandle};
use error::Error;
use events::Event;
const WINDOW_CLASS_NAME: &'static str = "NWG_BUILTIN_WINDOW";
#[derive(Clone)]
pub struct WindowT<S: Clone+Into<String>> {
pub title: S,
pub position: (i32, i32),
pub size: (u32, u32),
pub resizable: bool,
pub visible: bool,
pub disabled: bool,
pub exit_on_close: bool
}
impl<S: Clone+Into<String>, ID: Hash+Clone> ControlT<ID> for WindowT<S> {
fn type_id(&self) -> TypeId { TypeId::of::<Window>() }
fn events(&self) -> Vec<Event> {
vec![Event::Destroyed, Event::KeyDown, Event::KeyUp, Event::Char, Event::Closed, Event::MouseDown, Event::MouseUp,
Event::Moved, Event::Resized, Event::Raw]
}
#[allow(unused_variables)]
fn build(&self, ui: &Ui<ID>) -> Result<Box<Control>, Error> {
unsafe{
if let Err(e) = build_sysclass() { return Err(e); }
match build_window(&self) {
Ok(h) => { Ok( Box::new(Window{handle: h}) as Box<Control> ) },
Err(e) => Err(e)
}
}
}
}
#[allow(dead_code)]
pub struct Window {
handle: HWND,
}
impl Window {
pub fn close(&self) {
use user32::PostMessageW;
use winapi::WM_CLOSE;
unsafe{ PostMessageW(self.handle, WM_CLOSE, 0, 0) };
}
pub fn activate(&self) { unsafe{
use user32::SetForegroundWindow;
SetForegroundWindow(self.handle);
} }
pub fn get_title(&self) -> String { unsafe{ ::low::window_helper::get_window_text(self.handle) } }
pub fn set_title<'a>(&self, text: &'a str) { unsafe{ ::low::window_helper::set_window_text(self.handle, text); } }
pub fn get_visibility(&self) -> bool { unsafe{ ::low::window_helper::get_window_visibility(self.handle) } }
pub fn set_visibility(&self, visible: bool) { unsafe{ ::low::window_helper::set_window_visibility(self.handle, visible); }}
pub fn get_position(&self) -> (i32, i32) { unsafe{ ::low::window_helper::get_window_position(self.handle) } }
pub fn set_position(&self, x: i32, y: i32) { unsafe{ ::low::window_helper::set_window_position(self.handle, x, y); }}
pub fn get_size(&self) -> (u32, u32) { unsafe{ ::low::window_helper::get_window_size(self.handle) } }
pub fn set_size(&self, w: u32, h: u32) { unsafe{ ::low::window_helper::set_window_size(self.handle, w, h, true); } }
pub fn get_enabled(&self) -> bool { unsafe{ ::low::window_helper::get_window_enabled(self.handle) } }
pub fn set_enabled(&self, e:bool) { unsafe{ ::low::window_helper::set_window_enabled(self.handle, e); } }
}
impl Control for Window {
fn handle(&self) -> AnyHandle {
AnyHandle::HWND(self.handle)
}
fn control_type(&self) -> ControlType {
ControlType::Window
}
fn free(&mut self) {
use user32::DestroyWindow;
unsafe{ DestroyWindow(self.handle) };
}
}
use winapi::{UINT, WPARAM, LPARAM, LRESULT};
#[allow(unused_variables)]
unsafe extern "system" fn window_sysproc(hwnd: HWND, msg: UINT, w: WPARAM, l: LPARAM) -> LRESULT {
use winapi::{WM_CREATE, WM_CLOSE, GWL_USERDATA};
use user32::{DefWindowProcW, PostQuitMessage, ShowWindow};
use low::window_helper::get_window_long;
let handled = match msg {
WM_CREATE => true,
WM_CLOSE => {
ShowWindow(hwnd, 0);
let exit_on_close = get_window_long(hwnd, GWL_USERDATA) & 0x01 == 1;
if exit_on_close {
PostQuitMessage(0);
}
true
}
_ => false
};
if handled {
0
} else {
DefWindowProcW(hwnd, msg, w, l)
}
}
#[inline(always)]
unsafe fn build_sysclass() -> Result<(), Error> {
use low::window_helper::{SysclassParams, build_sysclass};
let params = SysclassParams {
class_name: WINDOW_CLASS_NAME,
sysproc: Some(window_sysproc),
background: None, style: None
};
if let Err(e) = build_sysclass(params) {
Err(Error::System(e))
} else {
Ok(())
}
}
#[inline(always)]
unsafe fn build_window<S: Clone+Into<String>>(t: &WindowT<S>) -> Result<HWND, Error> {
use low::window_helper::{WindowParams, build_window, set_window_long};
use winapi::{DWORD, WS_VISIBLE, WS_DISABLED, WS_OVERLAPPEDWINDOW, WS_CAPTION, WS_OVERLAPPED, WS_MINIMIZEBOX,
WS_MAXIMIZEBOX, WS_SYSMENU, GWL_USERDATA, WS_CLIPCHILDREN};
let fixed_window: DWORD = WS_CLIPCHILDREN| WS_SYSMENU | WS_CAPTION | WS_OVERLAPPED | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
let flags: DWORD =
if t.visible { WS_VISIBLE } else { 0 } |
if t.disabled { WS_DISABLED } else { 0 } |
if !t.resizable { fixed_window } else { WS_OVERLAPPEDWINDOW } ;
let params = WindowParams {
title: t.title.clone().into(),
class_name: WINDOW_CLASS_NAME,
position: t.position.clone(),
size: t.size.clone(),
flags: flags,
ex_flags: None,
parent: ::std::ptr::null_mut()
};
match build_window(params) {
Ok(h) => {
set_window_long(h, GWL_USERDATA, t.exit_on_close as usize);
Ok(h)
},
Err(e) => Err(Error::System(e))
}
}