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use bitflags::bitflags;
use std::ops::{BitAnd, BitAndAssign, BitOrAssign, Not};
use crate::math::MintVec2;
use crate::sys;
use crate::{Direction, Ui};
bitflags!(
/// Flags for invisible buttons
#[repr(transparent)]
pub struct ButtonFlags: u32 {
/// React on left mouse button
const MOUSE_BUTTON_LEFT = sys::ImGuiButtonFlags_MouseButtonLeft;
/// React on right mouse button
const MOUSE_BUTTON_RIGHT = sys::ImGuiButtonFlags_MouseButtonRight;
/// React on middle mouse button
const MOUSE_BUTTON_MIDDLE = sys::ImGuiButtonFlags_MouseButtonMiddle;
}
);
/// # Widgets: Miscellaneous
impl Ui {
/// Renders a clickable button.
///
/// Returns true if this button was clicked.
///
/// This is the equivalent of [button_with_size](Self::button_with_size)
/// with `size` set to `[0.0, 0.0]`, which will size the button to the
/// label's width in the current style.
#[doc(alias = "Button")]
pub fn button(&self, label: impl AsRef<str>) -> bool {
self.button_with_size(label, [0.0, 0.0])
}
/// Renders a clickable button.
///
/// Returns true if this button was clicked.
///
/// Setting `size` as `[0.0, 0.0]` will size the button to the label's width in
/// the current style.
#[doc(alias = "Button")]
pub fn button_with_size(&self, label: impl AsRef<str>, size: impl Into<MintVec2>) -> bool {
unsafe { sys::igButton(self.scratch_txt(label), size.into().into()) }
}
/// Renders a small clickable button that is easy to embed in text.
///
/// Returns true if this button was clicked.
#[doc(alias = "SmallButton")]
pub fn small_button(&self, label: impl AsRef<str>) -> bool {
unsafe { sys::igSmallButton(self.scratch_txt(label)) }
}
/// Renders a widget with button behaviour without the visual look.
///
/// Returns true if this button was clicked.
#[doc(alias = "InvisibleButton")]
pub fn invisible_button(&self, id: impl AsRef<str>, size: impl Into<MintVec2>) -> bool {
unsafe { sys::igInvisibleButton(self.scratch_txt(id), size.into().into(), 0) }
}
/// Renders a widget with button behaviour without the visual look.
///
/// Returns true if this button was clicked.
#[doc(alias = "InvisibleButton")]
pub fn invisible_button_flags(
&self,
id: impl AsRef<str>,
size: impl Into<MintVec2>,
flags: ButtonFlags,
) -> bool {
unsafe {
sys::igInvisibleButton(
self.scratch_txt(id),
size.into().into(),
flags.bits() as i32,
)
}
}
/// Renders a square button with an arrow shape.
///
/// Returns true if this button was clicked.
#[doc(alias = "ArrowButton")]
pub fn arrow_button(&self, id: impl AsRef<str>, direction: Direction) -> bool {
unsafe { sys::igArrowButton(self.scratch_txt(id), direction as i32) }
}
/// Renders a simple checkbox.
///
/// Returns true if this checkbox was clicked.
#[doc(alias = "Checkbox")]
pub fn checkbox(&self, label: impl AsRef<str>, value: &mut bool) -> bool {
unsafe { sys::igCheckbox(self.scratch_txt(label), value as *mut bool) }
}
/// Renders a checkbox suitable for toggling bit flags using a mask.
///
/// Returns true if this checkbox was clicked.
pub fn checkbox_flags<T>(&self, label: impl AsRef<str>, flags: &mut T, mask: T) -> bool
where
T: Copy + PartialEq + BitOrAssign + BitAndAssign + BitAnd<Output = T> + Not<Output = T>,
{
let mut value = *flags & mask == mask;
let pressed = self.checkbox(label, &mut value);
if pressed {
if value {
*flags |= mask;
} else {
*flags &= !mask;
}
}
pressed
}
/// Renders a simple radio button.
///
/// Returns true if this radio button was clicked.
#[doc(alias = "RadioButtonBool")]
pub fn radio_button_bool(&self, label: impl AsRef<str>, active: bool) -> bool {
unsafe { sys::igRadioButton_Bool(self.scratch_txt(label), active) }
}
/// Renders a radio button suitable for choosing an arbitrary value.
///
/// Returns true if this radio button was clicked.
#[doc(alias = "RadioButtonBool")]
pub fn radio_button<T>(&self, label: impl AsRef<str>, value: &mut T, button_value: T) -> bool
where
T: Copy + PartialEq,
{
let pressed = self.radio_button_bool(label, *value == button_value);
if pressed {
*value = button_value;
}
pressed
}
/// Renders a small circle and keeps the cursor on the same line
#[doc(alias = "Bullet")]
pub fn bullet(&self) {
unsafe { sys::igBullet() };
}
}