gtk/auto/
gesture_zoom.rs

1// This file was generated by gir (https://github.com/gtk-rs/gir)
2// from gir-files (https://github.com/gtk-rs/gir-files)
3// DO NOT EDIT
4
5use gdk;
6use glib::object::Cast;
7use glib::object::IsA;
8use glib::object::ObjectType as ObjectType_;
9use glib::signal::connect_raw;
10use glib::signal::SignalHandlerId;
11use glib::translate::*;
12use glib::StaticType;
13use glib::ToValue;
14use glib_sys;
15use gtk_sys;
16use libc;
17use std::boxed::Box as Box_;
18use std::fmt;
19use std::mem::transmute;
20use EventController;
21use Gesture;
22use PropagationPhase;
23use Widget;
24
25glib_wrapper! {
26    pub struct GestureZoom(Object<gtk_sys::GtkGestureZoom, gtk_sys::GtkGestureZoomClass, GestureZoomClass>) @extends Gesture, EventController;
27
28    match fn {
29        get_type => || gtk_sys::gtk_gesture_zoom_get_type(),
30    }
31}
32
33impl GestureZoom {
34    pub fn new<P: IsA<Widget>>(widget: &P) -> GestureZoom {
35        skip_assert_initialized!();
36        unsafe {
37            Gesture::from_glib_full(gtk_sys::gtk_gesture_zoom_new(
38                widget.as_ref().to_glib_none().0,
39            ))
40            .unsafe_cast()
41        }
42    }
43
44    pub fn get_scale_delta(&self) -> f64 {
45        unsafe { gtk_sys::gtk_gesture_zoom_get_scale_delta(self.to_glib_none().0) }
46    }
47
48    pub fn connect_scale_changed<F: Fn(&GestureZoom, f64) + 'static>(
49        &self,
50        f: F,
51    ) -> SignalHandlerId {
52        unsafe extern "C" fn scale_changed_trampoline<F: Fn(&GestureZoom, f64) + 'static>(
53            this: *mut gtk_sys::GtkGestureZoom,
54            scale: libc::c_double,
55            f: glib_sys::gpointer,
56        ) {
57            let f: &F = &*(f as *const F);
58            f(&from_glib_borrow(this), scale)
59        }
60        unsafe {
61            let f: Box_<F> = Box_::new(f);
62            connect_raw(
63                self.as_ptr() as *mut _,
64                b"scale-changed\0".as_ptr() as *const _,
65                Some(transmute(scale_changed_trampoline::<F> as usize)),
66                Box_::into_raw(f),
67            )
68        }
69    }
70}
71
72pub struct GestureZoomBuilder {
73    n_points: Option<u32>,
74    window: Option<gdk::Window>,
75    propagation_phase: Option<PropagationPhase>,
76    widget: Option<Widget>,
77}
78
79impl GestureZoomBuilder {
80    pub fn new() -> Self {
81        Self {
82            n_points: None,
83            window: None,
84            propagation_phase: None,
85            widget: None,
86        }
87    }
88
89    pub fn build(self) -> GestureZoom {
90        let mut properties: Vec<(&str, &dyn ToValue)> = vec![];
91        if let Some(ref n_points) = self.n_points {
92            properties.push(("n-points", n_points));
93        }
94        if let Some(ref window) = self.window {
95            properties.push(("window", window));
96        }
97        if let Some(ref propagation_phase) = self.propagation_phase {
98            properties.push(("propagation-phase", propagation_phase));
99        }
100        if let Some(ref widget) = self.widget {
101            properties.push(("widget", widget));
102        }
103        glib::Object::new(GestureZoom::static_type(), &properties)
104            .expect("object new")
105            .downcast()
106            .expect("downcast")
107    }
108
109    pub fn n_points(mut self, n_points: u32) -> Self {
110        self.n_points = Some(n_points);
111        self
112    }
113
114    pub fn window(mut self, window: &gdk::Window) -> Self {
115        self.window = Some(window.clone());
116        self
117    }
118
119    pub fn propagation_phase(mut self, propagation_phase: PropagationPhase) -> Self {
120        self.propagation_phase = Some(propagation_phase);
121        self
122    }
123
124    pub fn widget(mut self, widget: &Widget) -> Self {
125        self.widget = Some(widget.clone());
126        self
127    }
128}
129
130impl fmt::Display for GestureZoom {
131    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
132        write!(f, "GestureZoom")
133    }
134}