1use 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}