gdk/
cairo_interaction.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use crate::{RGBA, Rectangle, Window, ffi};
4use cairo::Surface;
5use cairo::{Context, Region};
6use gdk_pixbuf::Pixbuf;
7use glib::object::IsA;
8use glib::translate::*;
9
10pub trait GdkSurfaceExt {
11    #[doc(alias = "gdk_cairo_region_create_from_surface")]
12    fn create_region(&self) -> Option<Region>;
13}
14
15impl GdkSurfaceExt for Surface {
16    fn create_region(&self) -> Option<Region> {
17        unsafe {
18            from_glib_full(ffi::gdk_cairo_region_create_from_surface(
19                self.to_glib_none().0,
20            ))
21        }
22    }
23}
24
25pub trait GdkPixbufExt {
26    #[doc(alias = "gdk_cairo_surface_create_from_pixbuf")]
27    fn create_surface<W: IsA<Window>>(&self, scale: i32, for_window: Option<&W>)
28    -> Option<Surface>;
29}
30
31impl GdkPixbufExt for Pixbuf {
32    fn create_surface<W: IsA<Window>>(
33        &self,
34        scale: i32,
35        for_window: Option<&W>,
36    ) -> Option<Surface> {
37        unsafe {
38            from_glib_full(ffi::gdk_cairo_surface_create_from_pixbuf(
39                self.to_glib_none().0,
40                scale,
41                for_window.map(std::convert::AsRef::as_ref).to_glib_none().0,
42            ))
43        }
44    }
45}
46
47pub trait GdkContextExt {
48    fn create_from_window<W: IsA<Window>>(window: &W) -> Context;
49
50    #[allow(clippy::too_many_arguments)]
51    unsafe fn draw_from_gl<W: IsA<Window>>(
52        &self,
53        window: &W,
54        source: i32,
55        source_type: i32,
56        buffer_scale: i32,
57        x: i32,
58        y: i32,
59        width: i32,
60        height: i32,
61    );
62
63    #[doc(alias = "get_clip_rectangle")]
64    #[doc(alias = "gdk_cairo_get_clip_rectangle")]
65    fn clip_rectangle(&self) -> Option<Rectangle>;
66
67    #[doc(alias = "gdk_cairo_set_source_rgba")]
68    fn set_source_rgba(&self, rgba: &RGBA);
69
70    #[doc(alias = "gdk_cairo_set_source_pixbuf")]
71    fn set_source_pixbuf(&self, pixbuf: &Pixbuf, x: f64, y: f64);
72
73    #[doc(alias = "gdk_cairo_set_source_window")]
74    fn set_source_window<W: IsA<Window>>(&self, window: &W, x: f64, y: f64);
75
76    #[doc(alias = "gdk_cairo_rectangle")]
77    fn rectangle(&self, rectangle: &Rectangle);
78
79    fn add_region(&self, region: &Region);
80}
81
82impl GdkContextExt for Context {
83    fn create_from_window<W: IsA<Window>>(window: &W) -> Context {
84        skip_assert_initialized!();
85        unsafe { from_glib_full(ffi::gdk_cairo_create(window.as_ref().to_glib_none().0)) }
86    }
87
88    unsafe fn draw_from_gl<W: IsA<Window>>(
89        &self,
90        window: &W,
91        source: i32,
92        source_type: i32,
93        buffer_scale: i32,
94        x: i32,
95        y: i32,
96        width: i32,
97        height: i32,
98    ) {
99        unsafe {
100            skip_assert_initialized!();
101            ffi::gdk_cairo_draw_from_gl(
102                mut_override(self.to_glib_none().0),
103                window.as_ref().to_glib_none().0,
104                source,
105                source_type,
106                buffer_scale,
107                x,
108                y,
109                width,
110                height,
111            );
112        }
113    }
114
115    fn clip_rectangle(&self) -> Option<Rectangle> {
116        unsafe {
117            let mut rectangle = Rectangle::uninitialized();
118            if from_glib(ffi::gdk_cairo_get_clip_rectangle(
119                self.to_glib_none().0,
120                rectangle.to_glib_none_mut().0,
121            )) {
122                Some(rectangle)
123            } else {
124                None
125            }
126        }
127    }
128
129    fn set_source_rgba(&self, rgba: &RGBA) {
130        unsafe {
131            ffi::gdk_cairo_set_source_rgba(self.to_glib_none().0, rgba.to_glib_none().0);
132        }
133    }
134
135    fn set_source_pixbuf(&self, pixbuf: &Pixbuf, x: f64, y: f64) {
136        unsafe {
137            ffi::gdk_cairo_set_source_pixbuf(self.to_glib_none().0, pixbuf.to_glib_none().0, x, y);
138        }
139    }
140
141    fn set_source_window<W: IsA<Window>>(&self, window: &W, x: f64, y: f64) {
142        unsafe {
143            ffi::gdk_cairo_set_source_window(
144                self.to_glib_none().0,
145                window.as_ref().to_glib_none().0,
146                x,
147                y,
148            );
149        }
150    }
151
152    fn rectangle(&self, rectangle: &Rectangle) {
153        unsafe {
154            ffi::gdk_cairo_rectangle(self.to_glib_none().0, rectangle.to_glib_none().0);
155        }
156    }
157
158    fn add_region(&self, region: &Region) {
159        unsafe {
160            ffi::gdk_cairo_region(self.to_glib_none().0, region.to_glib_none().0);
161        }
162    }
163}
gdk/cairo_interaction.rs

gdk/
cairo_interaction.rs
