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use std::any::Any;
use std::marker::PhantomPinned;
use std::pin::Pin;
use std::sync::Arc;
use crate::co;
use crate::decl::*;
use crate::gui::{*, events::*, privs::*};
use crate::msg::*;
use crate::prelude::*;
struct Obj { // actual fields of Trackbar
base: BaseNativeControl,
events: TrackbarEvents,
_pin: PhantomPinned,
}
//------------------------------------------------------------------------------
/// Native
/// [trackbar](https://learn.microsoft.com/en-us/windows/win32/controls/trackbar-controls)
/// control.
#[derive(Clone)]
pub struct Trackbar(Pin<Arc<Obj>>);
unsafe impl Send for Trackbar {}
impl AsRef<BaseNativeControl> for Trackbar {
fn as_ref(&self) -> &BaseNativeControl {
&self.0.base
}
}
impl GuiWindow for Trackbar {
fn hwnd(&self) -> &HWND {
self.0.base.hwnd()
}
fn as_any(&self) -> &dyn Any {
self
}
}
impl GuiChild for Trackbar {
fn ctrl_id(&self) -> u16 {
self.0.base.ctrl_id()
}
}
impl GuiChildFocus for Trackbar {}
impl GuiNativeControl for Trackbar {}
impl GuiNativeControlEvents<TrackbarEvents> for Trackbar {
fn on(&self) -> &TrackbarEvents {
if *self.hwnd() != HWND::NULL {
panic!("Cannot add events after the control creation.");
} else if *self.0.base.parent().hwnd() != HWND::NULL {
panic!("Cannot add events after the parent window creation.");
}
&self.0.events
}
}
impl Trackbar {
/// Instantiates a new `Trackbar` object, to be created on the parent window
/// with
/// [`HWND::CreateWindowEx`](crate::prelude::user_Hwnd::CreateWindowEx).
///
/// # Panics
///
/// Panics if the parent window was already created – that is, you cannot
/// dynamically create a `Trackbar` in an event closure.
#[must_use]
pub fn new(parent: &impl GuiParent, opts: TrackbarOpts) -> Self {
let opts = auto_ctrl_id_if_zero(opts);
let ctrl_id = opts.ctrl_id;
let new_self = Self(
Arc::pin(
Obj {
base: BaseNativeControl::new(parent, ctrl_id),
events: TrackbarEvents::new(parent, ctrl_id),
_pin: PhantomPinned,
},
),
);
let self2 = new_self.clone();
parent.as_ref().before_user_on().wm_create_or_initdialog(move |_, _| {
self2.create(OptsResz::Wnd(&opts))?;
Ok(WmRet::NotHandled)
});
new_self
}
/// Instantiates a new `Trackbar` object, to be loaded from a dialog
/// resource with
/// [`HWND::GetDlgItem`](crate::prelude::user_Hwnd::GetDlgItem).
///
/// # Panics
///
/// Panics if the parent dialog was already created – that is, you cannot
/// dynamically create a `Trackbar` in an event closure.
#[must_use]
pub fn new_dlg(
parent: &impl GuiParent,
ctrl_id: u16,
resize_behavior: (Horz, Vert),
) -> Self
{
let new_self = Self(
Arc::pin(
Obj {
base: BaseNativeControl::new(parent, ctrl_id),
events: TrackbarEvents::new(parent, ctrl_id),
_pin: PhantomPinned,
},
),
);
let self2 = new_self.clone();
parent.as_ref().before_user_on().wm(co::WM::INITDIALOG, move |_, _| {
self2.create(OptsResz::Dlg(resize_behavior))?;
Ok(WmRet::NotHandled)
});
new_self
}
fn create(&self, opts_resz: OptsResz<&TrackbarOpts>) -> SysResult<()> {
match opts_resz {
OptsResz::Wnd(opts) => {
let mut pos = POINT::new(opts.position.0, opts.position.1);
let mut sz = SIZE::new(opts.size.0 as _, opts.size.1 as _);
multiply_dpi_or_dtu(
self.0.base.parent(), Some(&mut pos), Some(&mut sz))?;
self.0.base.create_window( // may panic
"msctls_trackbar32", None, pos, sz,
opts.window_ex_style,
opts.window_style | opts.trackbar_style.into(),
)?;
if opts.range != (0, 100) {
self.set_range(opts.range.0, opts.range.1);
}
},
OptsResz::Dlg(_) => self.0.base.create_dlg()?,
}
self.0.base.parent()
.add_to_layout_arranger(self.hwnd(), opts_resz.resize_behavior())
}
/// Retrieves the current position by sending a
/// [`trbm::GetPos`](crate::msg::trbm::GetPos) message.
#[must_use]
pub fn pos(&self) -> u32 {
unsafe { self.hwnd().SendMessage(trbm::GetPos {}) }
}
/// Retrieves the minimum and maximum position values by sending
/// [`trbm::GetRangeMin`](crate::msg::trbm::GetRangeMin) and
/// [`trbm::GetRangeMax`](crate::msg::trbm::GetRangeMax) messages.
#[must_use]
pub fn range(&self) -> (u32, u32) {
unsafe { (
self.hwnd().SendMessage(trbm::GetRangeMin {}),
self.hwnd().SendMessage(trbm::GetRangeMax {}),
) }
}
/// Sets the current position by sending a
/// [`trbm::SetPos`](crate::msg::trbm::SetPos) message.
pub fn set_pos(&self, pos: u32) {
unsafe {
self.hwnd()
.SendMessage(trbm::SetPos { redraw: true, pos });
}
}
/// Sets the minimum and maximum position values by sending
/// [`trbm::SetRangeMin`](crate::msg::trbm::SetRangeMin) and
/// [`trbm::SetRangeMax`](crate::msg::trbm::SetRangeMax) messages.
pub fn set_range(&self, min: u32, max: u32) {
unsafe {
self.hwnd()
.SendMessage(trbm::SetRangeMin { redraw: false, min });
self.hwnd()
.SendMessage(trbm::SetRangeMax { redraw: true, max });
}
}
}
//------------------------------------------------------------------------------
/// Options to create a [`Trackbar`](crate::gui::Trackbar) programmatically with
/// [`Trackbar::new`](crate::gui::Trackbar::new).
pub struct TrackbarOpts {
/// Left and top position coordinates of control within parent's client
/// area, to be
/// [created](https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-createwindowexw).
///
/// If the parent window is a dialog, the values are in Dialog Template
/// Units; otherwise in pixels, which will be multiplied to match current
/// system DPI.
///
/// Defaults to `(0, 0)`.
pub position: (i32, i32),
/// Width and height of control to be
/// [created](https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-createwindowexw).
///
/// If the parent window is a dialog, the values are in Dialog Template
/// Units; otherwise in pixels, which will be multiplied to match current
/// system DPI.
///
/// Defaults to `(120, 23)`.
pub size: (u32, u32),
/// Trackbar styles to be
/// [created](https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-createwindowexw).
///
/// Defaults to `TBS::HORZ | TBS::AUTOTICKS`.
pub trackbar_style: co::TBS,
/// Window styles to be
/// [created](https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-createwindowexw).
///
/// Defaults to `WS::CHILD | WS::VISIBLE | WS::TABSTOP | WS::GROUP`.
pub window_style: co::WS,
/// Extended window styles to be
/// [created](https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-createwindowexw).
///
/// Defaults to `WS_EX::LEFT`.
pub window_ex_style: co::WS_EX,
/// The control ID.
///
/// Defaults to an auto-generated ID.
pub ctrl_id: u16,
/// Horizontal and vertical behavior of the control when the parent window
/// is resized.
///
/// Defaults to `(gui::Horz::None, gui::Vert::None)`.
pub resize_behavior: (Horz, Vert),
/// The minimum and maximum position values.
///
/// Defaults to `(0, 100)`.
pub range: (u32, u32),
}
impl Default for TrackbarOpts {
fn default() -> Self {
Self {
position: (0, 0),
size: (120, 23),
trackbar_style: co::TBS::HORZ | co::TBS::AUTOTICKS,
window_style: co::WS::CHILD | co::WS::VISIBLE | co::WS::TABSTOP | co::WS::GROUP,
window_ex_style: co::WS_EX::LEFT,
ctrl_id: 0,
resize_behavior: (Horz::None, Vert::None),
range: (0, 100),
}
}
}
impl ResizeBehavior for &TrackbarOpts {
fn resize_behavior(&self) -> (Horz, Vert) {
self.resize_behavior
}
}
impl AutoCtrlId for TrackbarOpts {
fn ctrl_id_mut(&mut self) -> &mut u16 {
&mut self.ctrl_id
}
}