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Merge pull request #518 from baskerville/display-dpi

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Add SDL_GetDisplayDPI
This commit is contained in:
Tony Aldridge
2016-07-05 12:48:18 +01:00
committed by GitHub
parent 9783128209 5fb451041a
commit da4686612e
2 changed files with 15 additions and 0 deletions
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sdl2-sys/src/video.rs
+1
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@@ -160,6 +160,7 @@ extern "C" {
pub fn SDL_GetWindowDisplayIndex(window: *mut SDL_Window) -> c_int;
pub fn SDL_SetWindowDisplayMode(window: *mut SDL_Window, mode: *const SDL_DisplayMode) -> c_int;
pub fn SDL_GetWindowDisplayMode(window: *mut SDL_Window, mode: *mut SDL_DisplayMode) -> c_int;
pub fn SDL_GetDisplayDPI(displayIndex: c_int, ddpi: *mut c_float, hdpi: *mut c_float, vdpi: *mut c_float) -> c_int;
pub fn SDL_GetWindowPixelFormat(window: *mut SDL_Window) -> uint32_t;
pub fn SDL_CreateWindow(title: *const c_char, x: c_int, y: c_int, w: c_int, h: c_int, flags: uint32_t) -> *mut SDL_Window;
pub fn SDL_CreateWindowFrom(data: *const c_void) -> *mut SDL_Window;
src/sdl2/video.rs
+14
View File
@@ -571,6 +571,20 @@ impl VideoSubsystem {
}
}
/// Return a triplet `(ddpi, hdpi, vdpi)` containing the diagonal, horizontal and vertical
/// dots/pixels-per-inch of a display
pub fn display_dpi(&self, display_index: i32) -> Result<(f32, f32, f32), String> {
let mut ddpi = 0.0;
let mut hdpi = 0.0;
let mut vdpi = 0.0;
let result = unsafe { ll::SDL_GetDisplayDPI(display_index as c_int, &mut ddpi, &mut hdpi, &mut vdpi) };
if result < 0 {
Err(get_error())
} else {
Ok((ddpi, hdpi, vdpi))
}
}
pub fn is_screen_saver_enabled(&self) -> bool {
unsafe { ll::SDL_IsScreenSaverEnabled() == 1 }
}