1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193

use std::ops::RangeInclusive;
use std::os::raw::c_void;
use std::ptr;

use crate::internal::DataTypeKind;
use crate::string::ImStr;
use crate::sys;
use crate::Ui;

/// Builder for a slider widget.
#[derive(Copy, Clone, Debug)]
#[must_use]
pub struct Slider<'a, T: DataTypeKind> {
    label: &'a ImStr,
    min: T,
    max: T,
    display_format: Option<&'a ImStr>,
    power: f32,
}

impl<'a, T: DataTypeKind> Slider<'a, T> {
    /// Constructs a new slider builder with the given range.
    pub fn new(label: &ImStr, range: RangeInclusive<T>) -> Slider<T> {
        Slider {
            label,
            min: *range.start(),
            max: *range.end(),
            display_format: None,
            power: 1.0,
        }
    }
    /// Sets the display format using *a C-style printf string*
    #[inline]
    pub fn display_format(mut self, display_format: &'a ImStr) -> Self {
        self.display_format = Some(display_format);
        self
    }
    /// Sets the power (exponent) of the slider values
    #[inline]
    pub fn power(mut self, power: f32) -> Self {
        self.power = power;
        self
    }
    /// Builds a slider that is bound to the given value.
    ///
    /// Returns true if the slider value was changed.
    pub fn build(self, _: &Ui, value: &mut T) -> bool {
        unsafe {
            sys::igSliderScalar(
                self.label.as_ptr(),
                T::KIND as i32,
                value as *mut T as *mut c_void,
                &self.min as *const T as *const c_void,
                &self.max as *const T as *const c_void,
                self.display_format
                    .map(ImStr::as_ptr)
                    .unwrap_or(ptr::null()),
                self.power,
            )
        }
    }
    /// Builds a horizontal array of multiple sliders attached to the given slice.
    ///
    /// Returns true if any slider value was changed.
    pub fn build_array(self, _: &Ui, values: &mut [T]) -> bool {
        unsafe {
            sys::igSliderScalarN(
                self.label.as_ptr(),
                T::KIND as i32,
                values.as_mut_ptr() as *mut c_void,
                values.len() as i32,
                &self.min as *const T as *const c_void,
                &self.max as *const T as *const c_void,
                self.display_format
                    .map(ImStr::as_ptr)
                    .unwrap_or(ptr::null()),
                self.power,
            )
        }
    }
}

/// Builder for a vertical slider widget.
#[derive(Clone, Debug)]
#[must_use]
pub struct VerticalSlider<'a, T: DataTypeKind + Copy> {
    label: &'a ImStr,
    size: [f32; 2],
    min: T,
    max: T,
    display_format: Option<&'a ImStr>,
    power: f32,
}

impl<'a, T: DataTypeKind> VerticalSlider<'a, T> {
    /// Constructs a new vertical slider builder with the given size and range.
    pub fn new(label: &ImStr, size: [f32; 2], range: RangeInclusive<T>) -> VerticalSlider<T> {
        VerticalSlider {
            label,
            size,
            min: *range.start(),
            max: *range.end(),
            display_format: None,
            power: 1.0,
        }
    }
    /// Sets the display format using *a C-style printf string*
    #[inline]
    pub fn display_format(mut self, display_format: &'a ImStr) -> Self {
        self.display_format = Some(display_format);
        self
    }
    /// Sets the power (exponent) of the slider values
    #[inline]
    pub fn power(mut self, power: f32) -> Self {
        self.power = power;
        self
    }
    /// Builds a vertical slider that is bound to the given value.
    ///
    /// Returns true if the slider value was changed.
    pub fn build(self, _: &Ui, value: &mut T) -> bool {
        unsafe {
            sys::igVSliderScalar(
                self.label.as_ptr(),
                self.size.into(),
                T::KIND as i32,
                value as *mut T as *mut c_void,
                &self.min as *const T as *const c_void,
                &self.max as *const T as *const c_void,
                self.display_format
                    .map(ImStr::as_ptr)
                    .unwrap_or(ptr::null()),
                self.power,
            )
        }
    }
}

/// Builder for an angle slider widget.
#[derive(Copy, Clone, Debug)]
#[must_use]
pub struct AngleSlider<'a> {
    label: &'a ImStr,
    min_degrees: f32,
    max_degrees: f32,
    display_format: &'a ImStr,
}

impl<'a> AngleSlider<'a> {
    /// Constructs a new angle slider builder.
    pub fn new(label: &ImStr) -> AngleSlider {
        use crate::im_str;
        AngleSlider {
            label,
            min_degrees: -360.0,
            max_degrees: 360.0,
            display_format: im_str!("%.0f deg"),
        }
    }
    /// Sets the minimum value (in degrees)
    #[inline]
    pub fn min_degrees(mut self, min_degrees: f32) -> Self {
        self.min_degrees = min_degrees;
        self
    }
    /// Sets the maximum value (in degrees)
    #[inline]
    pub fn max_degrees(mut self, max_degrees: f32) -> Self {
        self.max_degrees = max_degrees;
        self
    }
    /// Sets the display format using *a C-style printf string*
    #[inline]
    pub fn display_format(mut self, display_format: &'a ImStr) -> Self {
        self.display_format = display_format;
        self
    }
    /// Builds an angle slider that is bound to the given value (in radians).
    ///
    /// Returns true if the slider value was changed.
    pub fn build(self, _: &Ui, value_rad: &mut f32) -> bool {
        unsafe {
            sys::igSliderAngle(
                self.label.as_ptr(),
                value_rad as *mut _,
                self.min_degrees,
                self.max_degrees,
                self.display_format.as_ptr(),
            )
        }
    }
}