add softbuf example

csv/src/main.rs

@@ -35,19 +35,20 @@ fn main() {
     let app = app::App::default().with_scheme(app::Scheme::Gtk);
     app::background(79, 79, 79);
     app::background2(41, 41, 41);
-    app::foreground(255, 255, 255);
+    app::foreground(150, 150, 150);
     let mut wind = window::Window::default().with_size(800, 600);
-    wind.make_resizable(true);
-    let mut browser = browser::Browser::new(5, 10, 100, 520, "");
-    let mut frame = frame::Frame::default()
-        .with_size(680, 520)
-        .right_of(&browser, 10);
+    let mut row = group::Flex::default_fill().row();
+    wind.resizable(&row);
+    let mut col = group::Flex::default().column();
+    let mut browser = browser::Browser::default();
     let mut btn = button::Button::default()
-        .with_label("Save image")
-        .with_size(100, 30)
-        .below_of(&frame, 15)
-        .center_x(&wind);
-    wind.make_resizable(true);
+        .with_label("@filesave");
+    // btn.set_label_color(Color::Magenta);
+    col.end();
+    col.fixed(&btn, 50);
+    row.fixed(&col, 100);
+    let mut frame = frame::Frame::default();
+    wind.end();
     wind.show();
 
     browser.set_type(browser::BrowserType::Hold);

softbuf/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "softbuf"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+fltk = { version = "1", features = ["rwh06"] }
+softbuffer = "0.4"

softbuf/src/main.rs

@@ -0,0 +1,38 @@
+use fltk::{prelude::*, *};
+use std::num::NonZeroU32;
+
+fn main() {
+    const width: u32 = 400;
+    const height: u32 = 300;
+    let a = app::App::default();
+    let mut w = window::Window::default().with_size(width as i32, height as i32);
+    w.end();
+    w.show();
+    w.wait_for_expose();
+
+    let context = softbuffer::Context::new(w.clone()).unwrap();
+    let mut surface = softbuffer::Surface::new(&context, w.clone()).unwrap();
+    surface
+        .resize(
+            NonZeroU32::new(width).unwrap(),
+            NonZeroU32::new(height).unwrap(),
+        )
+        .unwrap();
+
+    app::add_timeout(1.0, move || {
+        let mut buffer = surface.buffer_mut().unwrap();
+        for index in 0..(width * height) {
+            let y = index / width;
+            let x = index % width;
+            let red = x % 255;
+            let green = y % 255;
+            let blue = (x * y) % 255;
+
+            buffer[index as usize] = blue | (green << 8) | (red << 16);
+        }
+        buffer.present().unwrap();
+    });
+
+
+    a.run().unwrap();
+}