migrations/egui
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eframe: capture a screenshot using Frame::request_screenshot

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Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
This commit is contained in:
amfaber
2023-03-29 16:34:22 +02:00
committed by GitHub
parent 74d43bfa17
commit 870264b005
11 changed files with 384 additions and 73 deletions
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5
crates/eframe/src/native/epi_integration.rs
View File

@@ -128,7 +128,7 @@ pub fn window_builder<E>(
// Restore pos/size from previous session
window_settings.clamp_to_sane_values(largest_monitor_point_size(event_loop));
#[cfg(windows)]
window_settings.clamp_window_to_sane_position(&event_loop);
window_settings.clamp_window_to_sane_position(event_loop);
window_builder = window_settings.initialize_window(window_builder);
window_settings.inner_size_points()
} else {
@@ -228,6 +228,7 @@ pub fn handle_app_output(
window_pos,
visible: _, // handled in post_present
always_on_top,
screenshot_requested: _, // handled by the rendering backend,
minimized,
maximized,
} = app_output;
@@ -349,6 +350,7 @@ impl EpiIntegration {
gl,
#[cfg(feature = "wgpu")]
wgpu_render_state,
screenshot: std::cell::Cell::new(None),
};
let mut egui_winit = egui_winit::State::new(event_loop);
@@ -467,6 +469,7 @@ impl EpiIntegration {
tracing::debug!("App::on_close_event returned {}", self.close);
}
self.frame.output.visible = app_output.visible; // this is handled by post_present
self.frame.output.screenshot_requested = app_output.screenshot_requested;
handle_app_output(
window,
self.egui_ctx.pixels_per_point(),

29
crates/eframe/src/native/run.rs
View File

@@ -803,6 +803,14 @@ mod glow_integration {
&textures_delta,
);
let screenshot_requested = &mut integration.frame.output.screenshot_requested;
if *screenshot_requested {
*screenshot_requested = false;
let screenshot = painter.read_screen_rgba(screen_size_in_pixels);
integration.frame.screenshot.set(Some(screenshot));
}
integration.post_rendering(app.as_mut(), window);
{
@@ -820,11 +828,15 @@ mod glow_integration {
path.ends_with(".png"),
"Expected EFRAME_SCREENSHOT_TO to end with '.png', got {path:?}"
);
let [w, h] = screen_size_in_pixels;
let pixels = painter.read_screen_rgba(screen_size_in_pixels);
let image = image::RgbaImage::from_vec(w, h, pixels).unwrap();
let image = image::imageops::flip_vertical(&image);
image.save(&path).unwrap_or_else(|err| {
let screenshot = painter.read_screen_rgba(screen_size_in_pixels);
image::save_buffer(
&path,
screenshot.as_raw(),
screenshot.width() as u32,
screenshot.height() as u32,
image::ColorType::Rgba8,
)
.unwrap_or_else(|err| {
panic!("Failed to save screenshot to {path:?}: {err}");
});
eprintln!("Screenshot saved to {path:?}.");
@@ -1229,12 +1241,17 @@ mod wgpu_integration {
integration.egui_ctx.tessellate(shapes)
};
painter.paint_and_update_textures(
let screenshot_requested = &mut integration.frame.output.screenshot_requested;
let screenshot = painter.paint_and_update_textures(
integration.egui_ctx.pixels_per_point(),
app.clear_color(&integration.egui_ctx.style().visuals),
&clipped_primitives,
&textures_delta,
*screenshot_requested,
);
*screenshot_requested = false;
integration.frame.screenshot.set(screenshot);
integration.post_rendering(app.as_mut(), window);
integration.post_present(window);