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Diffstat (limited to 'bindgen/rust/examples/gui_test.rs')
| -rw-r--r-- | bindgen/rust/examples/gui_test.rs | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/bindgen/rust/examples/gui_test.rs b/bindgen/rust/examples/gui_test.rs new file mode 100644 index 0000000..891b698 --- /dev/null +++ b/bindgen/rust/examples/gui_test.rs @@ -0,0 +1,135 @@ +#![windows_subsystem = "windows"] // to turn off console. + +use celeritas::{Frame_Begin, Frame_End}; +use egui::DragValue; +use egui_overlay::EguiOverlay; +use egui_render_three_d::ThreeDBackend; +use egui_render_wgpu::WgpuBackend; + +fn main() { + // use tracing_subscriber::{fmt, prelude::*, EnvFilter}; + // if RUST_LOG is not set, we will use the following filters + // tracing_subscriber::registry() + // .with(fmt::layer()) + // .with( + // EnvFilter::try_from_default_env() + // .unwrap_or(EnvFilter::new("debug,wgpu=warn,naga=warn")), + // ) + // .init(); + + celeritas::egui_utils::start(HelloWorld { frame: 0}); +} + +pub struct HelloWorld { + pub frame: u64, +} +impl EguiOverlay for HelloWorld { + fn gui_run( + &mut self, + egui_context: &egui::Context, + _default_gfx_backend: &mut ThreeDBackend, + glfw_backend: &mut egui_window_glfw_passthrough::GlfwBackend, + ) { + // unsafe { + // Frame_Begin(); + // Frame_End(); + // } + + // just some controls to show how you can use glfw_backend + egui::Window::new("controls").show(egui_context, |ui| { + ui.set_width(300.0); + self.frame += 1; + ui.label(format!("current frame number: {}", self.frame)); + // sometimes, you want to see the borders to understand where the overlay is. + let mut borders = glfw_backend.window.is_decorated(); + if ui.checkbox(&mut borders, "window borders").changed() { + glfw_backend.window.set_decorated(borders); + } + + ui.label(format!( + "pixels_per_virtual_unit: {}", + glfw_backend.physical_pixels_per_virtual_unit + )); + ui.label(format!("window scale: {}", glfw_backend.scale)); + ui.label(format!("cursor pos x: {}", glfw_backend.cursor_pos[0])); + ui.label(format!("cursor pos y: {}", glfw_backend.cursor_pos[1])); + + ui.label(format!( + "passthrough: {}", + glfw_backend.window.is_mouse_passthrough() + )); + // how to change size. + // WARNING: don't use drag value, because window size changing while dragging ui messes things up. + let mut size = glfw_backend.window_size_logical; + let mut changed = false; + ui.horizontal(|ui| { + ui.label("width: "); + ui.add_enabled(false, DragValue::new(&mut size[0])); + if ui.button("inc").clicked() { + size[0] += 10.0; + changed = true; + } + if ui.button("dec").clicked() { + size[0] -= 10.0; + changed = true; + } + }); + ui.horizontal(|ui| { + ui.label("height: "); + ui.add_enabled(false, DragValue::new(&mut size[1])); + if ui.button("inc").clicked() { + size[1] += 10.0; + changed = true; + } + if ui.button("dec").clicked() { + size[1] -= 10.0; + changed = true; + } + }); + if changed { + glfw_backend.set_window_size(size); + } + // how to change size. + // WARNING: don't use drag value, because window size changing while dragging ui messes things up. + let mut pos = glfw_backend.window_position; + let mut changed = false; + ui.horizontal(|ui| { + ui.label("x: "); + ui.add_enabled(false, DragValue::new(&mut pos[0])); + if ui.button("inc").clicked() { + pos[0] += 10; + changed = true; + } + if ui.button("dec").clicked() { + pos[0] -= 10; + changed = true; + } + }); + ui.horizontal(|ui| { + ui.label("y: "); + ui.add_enabled(false, DragValue::new(&mut pos[1])); + if ui.button("inc").clicked() { + pos[1] += 10; + changed = true; + } + if ui.button("dec").clicked() { + pos[1] -= 10; + changed = true; + } + }); + if changed { + glfw_backend.window.set_pos(pos[0], pos[1]); + } + }); + + // here you decide if you want to be passthrough or not. + if egui_context.wants_pointer_input() || egui_context.wants_keyboard_input() { + // we need input, so we need the window to be NOT passthrough + glfw_backend.set_passthrough(false); + } else { + // we don't care about input, so the window can be passthrough now + glfw_backend.set_passthrough(true) + } + egui_context.request_repaint(); + } +}
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