migrations/egui
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Control the maximum egui web canvas size with App::max_size_points

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This commit is contained in:
Emil Ernerfeldt
2021-02-12 17:57:53 +01:00
parent be8d7b4eef
commit dbc6a620cd
6 changed files with 50 additions and 5 deletions
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2
egui_web/src/backend.rs
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@@ -191,7 +191,7 @@ impl AppRunner {
}
pub fn logic(&mut self) -> Result<(egui::Output, Vec<egui::ClippedMesh>), JsValue> {
resize_canvas_to_screen_size(self.web_backend.canvas_id());
resize_canvas_to_screen_size(self.web_backend.canvas_id(), self.app.max_size_points());
let canvas_size = canvas_size_in_points(self.web_backend.canvas_id());
let raw_input = self.input.new_frame(canvas_size);
self.web_backend.begin_frame(raw_input);

6
egui_web/src/lib.rs
View File

@@ -123,15 +123,15 @@ pub fn canvas_size_in_points(canvas_id: &str) -> egui::Vec2 {
)
}
pub fn resize_canvas_to_screen_size(canvas_id: &str) -> Option<()> {
pub fn resize_canvas_to_screen_size(canvas_id: &str, max_size_points: egui::Vec2) -> Option<()> {
let canvas = canvas_element(canvas_id)?;
let screen_size_points = screen_size_in_native_points()?;
let pixels_per_point = native_pixels_per_point();
let max_size_pixels = pixels_per_point * max_size_points;
let canvas_size_pixels = pixels_per_point * screen_size_points;
// Some browsers get slow with huge WebGL canvases, so we limit the size:
let max_size_pixels = egui::vec2(2048.0, 4096.0);
let canvas_size_pixels = canvas_size_pixels.min(max_size_pixels);
let canvas_size_points = canvas_size_pixels / pixels_per_point;