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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use windows_sys::Win32::{Foundation::S_OK, Graphics::Gdi, UI::Controls};
/// Windows font handle (`HFONT`).
pub struct Font(Gdi::HFONT);
impl Font {
/// Get the system theme caption font.
///
/// Panics if the font cannot be retrieved.
pub fn caption() -> Self {
unsafe {
let mut font = std::mem::zeroed::<Gdi::LOGFONTW>();
success!(hresult
Controls::GetThemeSysFont(0, Controls::TMT_CAPTIONFONT as i32, &mut font)
);
Font(success!(pointer Gdi::CreateFontIndirectW(&font)))
}
}
/// Get the system theme bold caption font.
///
/// Returns `None` if the font cannot be retrieved.
pub fn caption_bold() -> Option<Self> {
unsafe {
let mut font = std::mem::zeroed::<Gdi::LOGFONTW>();
if Controls::GetThemeSysFont(0, Controls::TMT_CAPTIONFONT as i32, &mut font) != S_OK {
return None;
}
font.lfWeight = Gdi::FW_BOLD as i32;
let ptr = Gdi::CreateFontIndirectW(&font);
if ptr == 0 {
return None;
}
Some(Font(ptr))
}
}
}
impl std::ops::Deref for Font {
type Target = Gdi::HFONT;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl Drop for Font {
fn drop(&mut self) {
unsafe { Gdi::DeleteObject(self.0 as _) };
}
}
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