1 /* This Source Code Form is subject to the terms of the Mozilla Public
2  * License, v. 2.0. If a copy of the MPL was not distributed with this
3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4 
5 use std::ptr;
6 use std::cell::UnsafeCell;
7 
8 use comptr::ComPtr;
9 use winapi;
10 use super::{DWriteFactory, BitmapRenderTarget};
11 
12 #[derive(Debug)]
13 pub struct GdiInterop {
14     native: UnsafeCell<ComPtr<winapi::IDWriteGdiInterop>>,
15 }
16 
17 impl GdiInterop {
create() -> GdiInterop18     pub fn create() -> GdiInterop {
19         unsafe {
20             let mut native: ComPtr<winapi::IDWriteGdiInterop> = ComPtr::new();
21             let hr = (*DWriteFactory()).GetGdiInterop(native.getter_addrefs());
22             assert!(hr == 0);
23             GdiInterop::take(native)
24         }
25     }
26 
take(native: ComPtr<winapi::IDWriteGdiInterop>) -> GdiInterop27     pub fn take(native: ComPtr<winapi::IDWriteGdiInterop>) -> GdiInterop {
28         GdiInterop {
29             native: UnsafeCell::new(native),
30         }
31     }
32 
create_bitmap_render_target(&self, width: u32, height: u32) -> BitmapRenderTarget33     pub fn create_bitmap_render_target(&self, width: u32, height: u32) -> BitmapRenderTarget {
34         unsafe {
35             let mut native: ComPtr<winapi::IDWriteBitmapRenderTarget> = ComPtr::new();
36             let hr = (*self.native.get()).CreateBitmapRenderTarget(ptr::null_mut(),
37                                                                    width, height,
38                                                                    native.getter_addrefs());
39             assert!(hr == 0);
40             BitmapRenderTarget::take(native)
41         }
42     }
43 }
44