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use crate::{Knot, PathNode}; use glib::{ object as gobject, object::{Cast, IsA}, signal::{connect_raw, SignalHandlerId}, translate::*, GString, }; use std::boxed::Box as Box_; use std::{fmt, mem::transmute}; glib_wrapper! { pub struct Path(Object<ffi::ClutterPath, ffi::ClutterPathClass, PathClass>) @extends gobject::InitiallyUnowned; match fn { get_type => || ffi::clutter_path_get_type(), } } impl Path { /// Creates a new `Path` instance with no nodes. /// /// The object has a floating reference so if you add it to a /// `BehaviourPath` then you do not need to unref it. /// /// # Returns /// /// the newly created `Path` pub fn new() -> Path { unsafe { from_glib_none(ffi::clutter_path_new()) } } pub fn with_description(desc: &str) -> Path { unsafe { from_glib_none(ffi::clutter_path_new_with_description( desc.to_glib_none().0, )) } } } impl Default for Path { fn default() -> Self { Self::new() } } /// Trait containing all `Path` methods. /// /// # Implementors /// /// [`Path`](struct.Path.html) pub trait PathExt: 'static { // /// Add the nodes of the Cairo path to the end of `self`. // /// ## `cpath` // /// a Cairo path // fn add_cairo_path(&self, cpath: &cairo::Path); /// Adds a `PathNodeType::Close` type node to the path. This creates a /// straight line from the last node to the last `PathNodeType::MoveTo` /// type node. fn add_close(&self); /// Adds a `PathNodeType::CurveTo` type node to the path. This causes /// the actor to follow a bezier from the last node to (`x_3`, `y_3`) using /// (`x_1`, `y_1`) and (`x_2`,`y_2`) as control points. /// ## `x_1` /// the x coordinate of the first control point /// ## `y_1` /// the y coordinate of the first control point /// ## `x_2` /// the x coordinate of the second control point /// ## `y_2` /// the y coordinate of the second control point /// ## `x_3` /// the x coordinate of the third control point /// ## `y_3` /// the y coordinate of the third control point fn add_curve_to(&self, x_1: i32, y_1: i32, x_2: i32, y_2: i32, x_3: i32, y_3: i32); /// Adds a `PathNodeType::LineTo` type node to the path. This causes the /// actor to move to the new coordinates in a straight line. /// ## `x` /// the x coordinate /// ## `y` /// the y coordinate fn add_line_to(&self, x: i32, y: i32); /// Adds a `PathNodeType::MoveTo` type node to the path. This is usually /// used as the first node in a path. It can also be used in the middle /// of the path to cause the actor to jump to the new coordinate. /// ## `x` /// the x coordinate /// ## `y` /// the y coordinate fn add_move_to(&self, x: i32, y: i32); /// Adds `node` to the end of the path. /// ## `node` /// a `PathNode` fn add_node(&self, node: &PathNode); /// Same as `PathExt::add_curve_to` except the coordinates are /// relative to the previous node. /// ## `x_1` /// the x coordinate of the first control point /// ## `y_1` /// the y coordinate of the first control point /// ## `x_2` /// the x coordinate of the second control point /// ## `y_2` /// the y coordinate of the second control point /// ## `x_3` /// the x coordinate of the third control point /// ## `y_3` /// the y coordinate of the third control point fn add_rel_curve_to(&self, x_1: i32, y_1: i32, x_2: i32, y_2: i32, x_3: i32, y_3: i32); /// Same as `PathExt::add_line_to` except the coordinates are /// relative to the previous node. /// ## `x` /// the x coordinate /// ## `y` /// the y coordinate fn add_rel_line_to(&self, x: i32, y: i32); /// Same as `PathExt::add_move_to` except the coordinates are /// relative to the previous node. /// ## `x` /// the x coordinate /// ## `y` /// the y coordinate fn add_rel_move_to(&self, x: i32, y: i32); /// Adds new nodes to the end of the path as described in `str`. The /// format is a subset of the SVG path format. Each node is represented /// by a letter and is followed by zero, one or three pairs of /// coordinates. The coordinates can be separated by spaces or a /// comma. The types are: /// /// - `M`: Adds a `PathNodeType::MoveTo` node. Takes one pair of coordinates. /// - `L`: Adds a `PathNodeType::LineTo` node. Takes one pair of coordinates. /// - `C`: Adds a `PathNodeType::CurveTo` node. Takes three pairs of coordinates. /// - `z`: Adds a `PathNodeType::Close` node. No coordinates are needed. /// /// The M, L and C commands can also be specified in lower case which /// means the coordinates are relative to the previous node. /// /// For example, to move an actor in a 100 by 100 pixel square centered /// on the point 300,300 you could use the following path: /// /// /// ```text /// M 250,350 l 0 -100 L 350,250 l 0 100 z /// ``` /// /// If the path description isn't valid `false` will be returned and no /// nodes will be added. /// ## `str` /// a string describing the new nodes /// /// # Returns /// /// `true` is the path description was valid or `false` /// otherwise. fn add_string(&self, str: &str) -> bool; /// Removes all nodes from the path. fn clear(&self); /// Calls a function for each node of the path. /// ## `callback` /// the function to call with each node /// ## `user_data` /// user data to pass to the function fn foreach<P: FnMut(&PathNode)>(&self, callback: P); /// Returns a newly allocated string describing the path in the same /// format as used by `PathExt::add_string`. /// /// # Returns /// /// a string description of the path. Free with `g_free`. fn get_description(&self) -> Option<GString>; /// Retrieves an approximation of the total length of the path. /// /// # Returns /// /// the length of the path. fn get_length(&self) -> u32; /// Retrieves the number of nodes in the path. /// /// # Returns /// /// the number of nodes. fn get_n_nodes(&self) -> u32; /// Retrieves the node of the path indexed by `index`. /// ## `index_` /// the node number to retrieve /// ## `node` /// a location to store a copy of the node fn get_node(&self, index_: u32) -> PathNode; /// Returns a `glib::SList` of `PathNode`<!-- -->s. The list should be /// freed with `glib::SList::free`. The nodes are owned by the path and /// should not be freed. Altering the path may cause the nodes in the /// list to become invalid so you should copy them if you want to keep /// the list. /// /// # Returns /// /// a /// list of nodes in the path. fn get_nodes(&self) -> Vec<PathNode>; /// The value in `progress` represents a position along the path where /// 0.0 is the beginning and 1.0 is the end of the path. An /// interpolated position is then stored in `position`. /// ## `progress` /// a position along the path as a fraction of its length /// ## `position` /// location to store the position /// /// # Returns /// /// index of the node used to calculate the position. fn get_position(&self, progress: f64) -> (u32, Knot); /// Inserts `node` into the path before the node at the given offset. If /// `index_` is negative it will append the node to the end of the path. /// ## `index_` /// offset of where to insert the node /// ## `node` /// the node to insert fn insert_node(&self, index_: i32, node: &PathNode); /// Removes the node at the given offset from the path. /// ## `index_` /// index of the node to remove fn remove_node(&self, index_: u32); /// Replaces the node at offset `index_` with `node`. /// ## `index_` /// index to the existing node /// ## `node` /// the replacement node fn replace_node(&self, index_: u32, node: &PathNode); /// Replaces all of the nodes in the path with nodes described by /// `str`. See `PathExt::add_string` for details of the format. /// /// If the string is invalid then `false` is returned and the path is /// unaltered. /// ## `str` /// a string describing the path /// /// # Returns /// /// `true` is the path was valid, `false` otherwise. fn set_description(&self, str: &str) -> bool; // /// Add the nodes of the Path to the path in the Cairo context. // /// ## `cr` // /// a Cairo context // fn to_cairo_path(&self, cr: &mut cairo::Context); fn connect_property_description_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId; fn connect_property_length_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId; } impl<O: IsA<Path>> PathExt for O { // fn add_cairo_path(&self, cpath: &cairo::Path) { // unsafe { // ffi::clutter_path_add_cairo_path( // self.as_ref().to_glib_none().0, // cpath.to_glib_none().0, // ); // } // } fn add_close(&self) { unsafe { ffi::clutter_path_add_close(self.as_ref().to_glib_none().0); } } fn add_curve_to(&self, x_1: i32, y_1: i32, x_2: i32, y_2: i32, x_3: i32, y_3: i32) { unsafe { ffi::clutter_path_add_curve_to( self.as_ref().to_glib_none().0, x_1, y_1, x_2, y_2, x_3, y_3, ); } } fn add_line_to(&self, x: i32, y: i32) { unsafe { ffi::clutter_path_add_line_to(self.as_ref().to_glib_none().0, x, y); } } fn add_move_to(&self, x: i32, y: i32) { unsafe { ffi::clutter_path_add_move_to(self.as_ref().to_glib_none().0, x, y); } } fn add_node(&self, node: &PathNode) { unsafe { ffi::clutter_path_add_node(self.as_ref().to_glib_none().0, node.to_glib_none().0); } } fn add_rel_curve_to(&self, x_1: i32, y_1: i32, x_2: i32, y_2: i32, x_3: i32, y_3: i32) { unsafe { ffi::clutter_path_add_rel_curve_to( self.as_ref().to_glib_none().0, x_1, y_1, x_2, y_2, x_3, y_3, ); } } fn add_rel_line_to(&self, x: i32, y: i32) { unsafe { ffi::clutter_path_add_rel_line_to(self.as_ref().to_glib_none().0, x, y); } } fn add_rel_move_to(&self, x: i32, y: i32) { unsafe { ffi::clutter_path_add_rel_move_to(self.as_ref().to_glib_none().0, x, y); } } fn add_string(&self, str: &str) -> bool { unsafe { from_glib(ffi::clutter_path_add_string( self.as_ref().to_glib_none().0, str.to_glib_none().0, )) } } fn clear(&self) { unsafe { ffi::clutter_path_clear(self.as_ref().to_glib_none().0); } } fn foreach<P: FnMut(&PathNode)>(&self, callback: P) { let callback_data: P = callback; unsafe extern "C" fn callback_func<P: FnMut(&PathNode)>( node: *const ffi::ClutterPathNode, data: glib_sys::gpointer, ) { let node = from_glib_borrow(node); let callback: *mut P = data as *const _ as usize as *mut P; (*callback)(&node); } let callback = Some(callback_func::<P> as _); let super_callback0: &P = &callback_data; unsafe { ffi::clutter_path_foreach( self.as_ref().to_glib_none().0, callback, super_callback0 as *const _ as usize as *mut _, ); } } fn get_description(&self) -> Option<GString> { unsafe { from_glib_full(ffi::clutter_path_get_description( self.as_ref().to_glib_none().0, )) } } fn get_length(&self) -> u32 { unsafe { ffi::clutter_path_get_length(self.as_ref().to_glib_none().0) } } fn get_n_nodes(&self) -> u32 { unsafe { ffi::clutter_path_get_n_nodes(self.as_ref().to_glib_none().0) } } fn get_node(&self, index_: u32) -> PathNode { unsafe { let mut node = PathNode::uninitialized(); ffi::clutter_path_get_node( self.as_ref().to_glib_none().0, index_, node.to_glib_none_mut().0, ); node } } fn get_nodes(&self) -> Vec<PathNode> { unsafe { FromGlibPtrContainer::from_glib_container(ffi::clutter_path_get_nodes( self.as_ref().to_glib_none().0, )) } } fn get_position(&self, progress: f64) -> (u32, Knot) { unsafe { let mut position = Knot::uninitialized(); let ret = ffi::clutter_path_get_position( self.as_ref().to_glib_none().0, progress, position.to_glib_none_mut().0, ); (ret, position) } } fn insert_node(&self, index_: i32, node: &PathNode) { unsafe { ffi::clutter_path_insert_node( self.as_ref().to_glib_none().0, index_, node.to_glib_none().0, ); } } fn remove_node(&self, index_: u32) { unsafe { ffi::clutter_path_remove_node(self.as_ref().to_glib_none().0, index_); } } fn replace_node(&self, index_: u32, node: &PathNode) { unsafe { ffi::clutter_path_replace_node( self.as_ref().to_glib_none().0, index_, node.to_glib_none().0, ); } } fn set_description(&self, str: &str) -> bool { unsafe { from_glib(ffi::clutter_path_set_description( self.as_ref().to_glib_none().0, str.to_glib_none().0, )) } } // fn to_cairo_path(&self, cr: &mut cairo::Context) { // unsafe { // ffi::clutter_path_to_cairo_path( // self.as_ref().to_glib_none().0, // cr.to_glib_none_mut().0, // ); // } // } fn connect_property_description_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId { unsafe extern "C" fn notify_description_trampoline<P, F: Fn(&P) + 'static>( this: *mut ffi::ClutterPath, _param_spec: glib_sys::gpointer, f: glib_sys::gpointer, ) where P: IsA<Path>, { let f: &F = &*(f as *const F); f(&Path::from_glib_borrow(this).unsafe_cast_ref()) } unsafe { let f: Box_<F> = Box_::new(f); connect_raw( self.as_ptr() as *mut _, b"notify::description\0".as_ptr() as *const _, Some(transmute::<_, unsafe extern "C" fn()>( notify_description_trampoline::<Self, F> as *const (), )), Box_::into_raw(f), ) } } fn connect_property_length_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId { unsafe extern "C" fn notify_length_trampoline<P, F: Fn(&P) + 'static>( this: *mut ffi::ClutterPath, _param_spec: glib_sys::gpointer, f: glib_sys::gpointer, ) where P: IsA<Path>, { let f: &F = &*(f as *const F); f(&Path::from_glib_borrow(this).unsafe_cast_ref()) } unsafe { let f: Box_<F> = Box_::new(f); connect_raw( self.as_ptr() as *mut _, b"notify::length\0".as_ptr() as *const _, Some(transmute::<_, unsafe extern "C" fn()>( notify_length_trampoline::<Self, F> as *const (), )), Box_::into_raw(f), ) } } } impl fmt::Display for Path { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "Path") } }