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InteractionState

Struct InteractionState 

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pub struct InteractionState {
    pub selection_rect: Option<SelectionRect>,
    pub is_selecting: bool,
    pub selection_start: Option<[f64; 2]>,
    pub is_panning: bool,
    pub last_pan_pos: Option<[f64; 2]>,
    pub view_range: (f64, f64),
    pub view_y_range: (f64, f64),
}

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§selection_rect: Option<SelectionRect>

Прямоугольник текущего выделения (если есть)

§is_selecting: bool

Флаг, указывающий, выполняется ли выделение

§selection_start: Option<[f64; 2]>

Начальная точка выделения (если выполняется выделение)

§is_panning: bool

Флаг, указывающий, выполняется ли панорамирование

§last_pan_pos: Option<[f64; 2]>

Последняя позиция панорамирования (для вычисления смещения)

§view_range: (f64, f64)

Диапазон отображения по оси X (минимум и максимум)

§view_y_range: (f64, f64)

Диапазон отображения по оси Y (минимум и максимум)

Implementations§

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impl InteractionState

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pub fn default() -> Self

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pub fn pan(&mut self, delta: f64)

Сдвигает отображение по оси X

§Параметры
  • delta - величина сдвига
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pub fn pan_xy(&mut self, delta_x: f64, delta_y: f64)

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pub fn start_selection(&mut self, start_point: [f64; 2])

Начинает процесс выделения области

§Параметры
  • start_point - начальная точка выделения [x, y]
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pub fn start_pan(&mut self, start_point: [f64; 2])

Начинает процесс панорамирования

§Параметры
  • start_x - начальная x-координата панорамирования
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pub fn update_pan(&mut self, current_point: [f64; 2])

Обновляет процесс панорамирования

§Параметры
  • current_x - текущая x-координата панорамирования
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pub fn end_pan(&mut self)

Завершает процесс панорамирования

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pub fn update_selection(&mut self, end_point: [f64; 2]) -> bool

Обновляет процесс выделения

§Параметры
  • end_point - конечная точка выделения [x, y]
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pub fn end_selection(&mut self)

Завершает процесс выделения

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pub fn clear_selection_rect(&mut self)

Очищает прямоугольник выделения

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pub fn zoom(&mut self, factor: f64, center: [f64; 2])

Масштабирует отображение

§Параметры
  • factor - коэффициент масштабирования
  • center - центральная точка масштабирования
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pub fn fit_to_selection(&mut self)

Масштабирует отображение под выделенную область

Trait Implementations§

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impl Clone for InteractionState

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fn clone(&self) -> InteractionState

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for InteractionState

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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