Update example screenshots

examples/save_plot/README.md

@@ -3,3 +3,5 @@ This example shows that you can save a plot in egui as a png.
 ```sh
 cargo run -p save_plot
 ```
+
+![](screenshot.png)

examples/save_plot/src/main.rs

@@ -8,7 +8,7 @@ fn main() -> Result<(), eframe::Error> {
     env_logger::init(); // Log to stderr (if you run with `RUST_LOG=debug`).
 
     let options = eframe::NativeOptions {
-        initial_window_size: Some(egui::vec2(350.0, 400.0)),
+        initial_window_size: Some(egui::vec2(350.0, 200.0)),
         ..Default::default()
     };
     eframe::run_native(
@@ -27,45 +27,19 @@ impl eframe::App for MyApp {
     fn update(&mut self, ctx: &egui::Context, frame: &mut eframe::Frame) {
         let mut plot_rect = None;
         egui::CentralPanel::default().show(ctx, |ui| {
-            // these are just some dummy variables for the example,
-            // such that the plot is not at position (0,0)
-            let height = 200.0;
-            let border_x = 11.0;
-            let border_y = 18.0;
-            let width = 300.0;
-
-            ui.heading("My egui Application");
-
-            // add some whitespace in y direction
-            ui.add_space(border_y);
-
             if ui.button("Save Plot").clicked() {
                 frame.request_screenshot();
             }
 
-            // add some whitespace in y direction
-            ui.add_space(border_y);
+            let my_plot = Plot::new("My Plot").legend(Legend::default());
 
-            ui.horizontal(|ui| {
-                // add some whitespace in x direction
-                ui.add_space(border_x);
-
-                let my_plot = Plot::new("My Plot")
-                    .height(height)
-                    .width(width)
-                    .legend(Legend::default());
-
-                // let's create a dummy line in the plot
-                let graph: Vec<[f64; 2]> = vec![[0.0, 1.0], [2.0, 3.0], [3.0, 2.0]];
-                let inner = my_plot.show(ui, |plot_ui| {
-                    plot_ui.line(Line::new(PlotPoints::from(graph)).name("curve"));
-                });
-                // Remember the position of the plot
-                plot_rect = Some(inner.response.rect);
+            // let's create a dummy line in the plot
+            let graph: Vec<[f64; 2]> = vec![[0.0, 1.0], [2.0, 3.0], [3.0, 2.0]];
+            let inner = my_plot.show(ui, |plot_ui| {
+                plot_ui.line(Line::new(PlotPoints::from(graph)).name("curve"));
             });
-
-            // add some whitespace in y direction
-            ui.add_space(border_y);
+            // Remember the position of the plot
+            plot_rect = Some(inner.response.rect);
         });
 
         if let (Some(screenshot), Some(plot_location)) = (self.screenshot.take(), plot_rect) {