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The following commit(s) were added to refs/heads/master by this push:
new 18838d23b examples/rust: Add basic Slint example
18838d23b is described below
commit 18838d23bff52e9e15627abcb54e7a4085489673
Author: Huang Qi <huang...@xiaomi.com>
AuthorDate: Wed Jan 22 16:06:47 2025 +0800
examples/rust: Add basic Slint example
Summary:
- Added a basic Slint example for NuttX, demonstrating how to integrate
Slint UI framework with Rust on NuttX
- Includes a simple UI with a counter and touchscreen input handling
- Provides CMake, Kconfig, and Makefile configurations for building the
example
Impact:
- Introduces a new example showcasing Slint UI framework usage on NuttX
- Enables developers to explore Rust-based UI development on embedded
systems
- Demonstrates integration with NuttX framebuffer and touchscreen drivers
Signed-off-by: Huang Qi <huang...@xiaomi.com>
---
examples/rust/slint/.gitignore | 1 +
examples/rust/slint/CMakeLists.txt | 31 +++++++
examples/rust/slint/Cargo.toml | 24 ++++++
examples/rust/slint/Kconfig | 29 +++++++
examples/rust/slint/Make.defs | 26 ++++++
examples/rust/slint/Makefile | 34 ++++++++
examples/rust/slint/build.rs | 28 ++++++
examples/rust/slint/src/lib.rs | 171 +++++++++++++++++++++++++++++++++++++
examples/rust/slint/ui/app.slint | 25 ++++++
9 files changed, 369 insertions(+)
diff --git a/examples/rust/slint/.gitignore b/examples/rust/slint/.gitignore
new file mode 100644
index 000000000..eb5a316cb
--- /dev/null
+++ b/examples/rust/slint/.gitignore
@@ -0,0 +1 @@
+target
diff --git a/examples/rust/slint/CMakeLists.txt
b/examples/rust/slint/CMakeLists.txt
new file mode 100644
index 000000000..6ed088aea
--- /dev/null
+++ b/examples/rust/slint/CMakeLists.txt
@@ -0,0 +1,31 @@
+#
##############################################################################
+# apps/examples/rust/slint/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
contributor
+# license agreements. See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership. The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may
not
+# use this file except in compliance with the License. You may obtain a copy
of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+#
##############################################################################
+
+if(CONFIG_EXAMPLES_RUST_SLINT)
+
+ # Build the Rust crate using nuttx_add_rust
+ nuttx_add_rust(CRATE_NAME slint CRATE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
+
+ nuttx_add_application(
+ NAME ${CONFIG_EXAMPLES_RUST_SLINT_PROGNAME} STACKSIZE
+ ${CONFIG_EXAMPLES_RUST_SLINT_STACKSIZE} PRIORITY
+ ${CONFIG_EXAMPLES_RUST_SLINT_PRIORITY})
+
+endif() # CONFIG_EXAMPLES_RUST_SLINT
diff --git a/examples/rust/slint/Cargo.toml b/examples/rust/slint/Cargo.toml
new file mode 100644
index 000000000..4600f2220
--- /dev/null
+++ b/examples/rust/slint/Cargo.toml
@@ -0,0 +1,24 @@
+[package]
+name = "slint"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["staticlib"]
+
+[profile.dev]
+panic = "abort"
+
+[profile.release]
+panic = "abort"
+lto = true
+codegen-units = 1
+opt-level = 'z'
+
+[dependencies]
+libc = "0.2"
+slint = { version = "1.9", default-features = false, features = ["compat-1-2",
"renderer-software", "libm", "unsafe-single-threaded"] }
+nuttx = { git = "https://github.com/no1wudi/nuttx-rs.git";, branch = "master" }
+
+[build-dependencies]
+slint-build = { version = "1.9" }
diff --git a/examples/rust/slint/Kconfig b/examples/rust/slint/Kconfig
new file mode 100644
index 000000000..babc19d04
--- /dev/null
+++ b/examples/rust/slint/Kconfig
@@ -0,0 +1,29 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config EXAMPLES_RUST_SLINT
+ tristate "Slint Basic Example"
+ default n
+ ---help---
+ Enable the basic Slint example.
+
+if EXAMPLES_RUST_SLINT
+
+config EXAMPLES_RUST_SLINT_PROGNAME
+ string "Program name"
+ default "slint"
+ ---help---
+ This is the name of the program that will be used when the
+ program is installed.
+
+config EXAMPLES_RUST_SLINT_PRIORITY
+ int "Task priority"
+ default 100
+
+config EXAMPLES_RUST_SLINT_STACKSIZE
+ int "Stack size"
+ default DEFAULT_TASK_STACKSIZE
+
+endif
diff --git a/examples/rust/slint/Make.defs b/examples/rust/slint/Make.defs
new file mode 100644
index 000000000..9259913fc
--- /dev/null
+++ b/examples/rust/slint/Make.defs
@@ -0,0 +1,26 @@
+############################################################################
+# apps/examples/rust/slint/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/tools/Rust.mk
+
+ifneq ($(CONFIG_EXAMPLES_RUST_SLINT),)
+CONFIGURED_APPS += $(APPDIR)/examples/rust/slint
+EXTRA_LIBS += $(call RUST_GET_BINDIR,slint,$(APPDIR)/examples/rust)
+endif
diff --git a/examples/rust/slint/Makefile b/examples/rust/slint/Makefile
new file mode 100644
index 000000000..34b444e9d
--- /dev/null
+++ b/examples/rust/slint/Makefile
@@ -0,0 +1,34 @@
+############################################################################
+# apps/examples/rust/slint/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+PROGNAME = $(CONFIG_EXAMPLES_RUST_SLINT_PROGNAME)
+PRIORITY = $(CONFIG_EXAMPLES_RUST_SLINT_PRIORITY)
+STACKSIZE = $(CONFIG_EXAMPLES_RUST_SLINT_STACKSIZE)
+MODULE = $(CONFIG_EXAMPLES_RUST_SLINT)
+
+context::
+ $(call RUST_CARGO_BUILD,slint,$(APPDIR)/examples/rust)
+
+clean::
+ $(call RUST_CARGO_CLEAN,slint,$(APPDIR)/examples/rust)
+
+include $(APPDIR)/Application.mk
diff --git a/examples/rust/slint/build.rs b/examples/rust/slint/build.rs
new file mode 100644
index 000000000..6142de92a
--- /dev/null
+++ b/examples/rust/slint/build.rs
@@ -0,0 +1,28 @@
+//
##############################################################################
+// examples/rust/slint/build.rs
+//
+// Licensed to the Apache Software Foundation (ASF) under one or more
contributor
+// license agreements. See the NOTICE file distributed with this work for
+// additional information regarding copyright ownership. The ASF licenses this
+// file to you under the Apache License, Version 2.0 (the "License"); you may
not
+// use this file except in compliance with the License. You may obtain a copy
of
+// the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
under
+// the License.
+//
+//
##############################################################################
+
+fn main() {
+ slint_build::compile_with_config(
+ "ui/app.slint",
+ slint_build::CompilerConfiguration::new()
+
.embed_resources(slint_build::EmbedResourcesKind::EmbedForSoftwareRenderer),
+ )
+ .unwrap();
+}
diff --git a/examples/rust/slint/src/lib.rs b/examples/rust/slint/src/lib.rs
new file mode 100644
index 000000000..043274cbc
--- /dev/null
+++ b/examples/rust/slint/src/lib.rs
@@ -0,0 +1,171 @@
+//
##############################################################################
+// examples/rust/slint/src/lib.rs
+//
+// Licensed to the Apache Software Foundation (ASF) under one or more
contributor
+// license agreements. See the NOTICE file distributed with this work for
+// additional information regarding copyright ownership. The ASF licenses this
+// file to you under the Apache License, Version 2.0 (the "License"); you may
not
+// use this file except in compliance with the License. You may obtain a copy
of
+// the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
under
+// the License.
+//
+//
##############################################################################
+
+use std::rc::Rc;
+use std::{cell::RefCell, ffi::CStr};
+
+use slint::platform::software_renderer::{LineBufferProvider, Rgb565Pixel};
+
+use nuttx::input::touchscreen::*;
+use nuttx::video::fb::*;
+use slint::platform::WindowEvent;
+
+slint::include_modules!();
+
+struct NuttXPlatform {
+ window: Rc<slint::platform::software_renderer::MinimalSoftwareWindow>,
+}
+
+impl slint::platform::Platform for NuttXPlatform {
+ fn create_window_adapter(
+ &self,
+ ) -> Result<Rc<dyn slint::platform::WindowAdapter>, slint::PlatformError> {
+ Ok(self.window.clone())
+ }
+ fn duration_since_start(&self) -> std::time::Duration {
+ std::time::SystemTime::now()
+ .duration_since(std::time::UNIX_EPOCH)
+ .unwrap()
+ }
+}
+
+fn create_slint_app() -> AppWindow {
+ AppWindow::new().expect("Failed to load UI")
+}
+
+#[derive(Debug, Clone)]
+struct NuttXRenderer {
+ frame_buffer: *mut u8,
+ line_buffer: Rc<RefCell<Vec<Rgb565Pixel>>>,
+ stride: usize,
+ lines: usize,
+}
+
+impl LineBufferProvider for NuttXRenderer {
+ type TargetPixel = Rgb565Pixel;
+ fn process_line(
+ &mut self,
+ line: usize,
+ range: std::ops::Range<usize>,
+ render_fn: impl FnOnce(&mut [Self::TargetPixel]),
+ ) {
+ let fb_size = self.stride * self.lines;
+ let frame = unsafe {
+ std::slice::from_raw_parts_mut(self.frame_buffer as *mut
Rgb565Pixel, fb_size)
+ };
+ let mut buffer = self.line_buffer.borrow_mut();
+ render_fn(&mut buffer[range.clone()]);
+ let offset = line * self.stride;
+ frame[offset..offset + range.end -
range.start].copy_from_slice(&buffer[range]);
+ }
+}
+
+#[no_mangle]
+pub extern "C" fn slint_main() {
+ // Open the framebuffer device and get its information
+ let fbdev = match
FrameBuffer::new(CStr::from_bytes_with_nul(b"/dev/fb0\0").unwrap()) {
+ Ok(fb) => fb,
+ Err(_) => {
+ println!("Failed to open framebuffer device");
+ return;
+ }
+ };
+
+ let planeinfo = fbdev.get_plane_info().unwrap();
+ let videoinfo = fbdev.get_video_info().unwrap();
+
+ println!("{:?}", planeinfo);
+ println!("{:?}", videoinfo);
+
+ if videoinfo.fmt != Format::RGB565 as u8 {
+ println!("Unsupported pixel format, only RGB565 is supported for now");
+ return;
+ }
+
+ // Open the touchscreen device
+ let mut tsdev = match
TouchScreen::open(CStr::from_bytes_with_nul(b"/dev/input0\0").unwrap()) {
+ Ok(ts) => ts,
+ Err(_) => {
+ println!("Failed to open touchscreen device");
+ return;
+ }
+ };
+
+ // Setup the Slint backend
+ let window =
slint::platform::software_renderer::MinimalSoftwareWindow::new(Default::default());
+ window.set_size(slint::PhysicalSize::new(
+ videoinfo.xres.into(),
+ videoinfo.yres.into(),
+ ));
+
+ // Set the platform
+ slint::platform::set_platform(Box::new(NuttXPlatform {
+ window: window.clone(),
+ }))
+ .unwrap();
+
+ // Configure the UI
+ let _ui = create_slint_app();
+
+ // Create the renderer for NuttX
+ let nxrender = NuttXRenderer {
+ frame_buffer: planeinfo.fbmem as *mut u8,
+ line_buffer: Rc::new(RefCell::new(vec![
+ Rgb565Pixel::default();
+ videoinfo.xres as usize
+ ])),
+ stride: videoinfo.xres.into(),
+ lines: videoinfo.yres.into(),
+ };
+
+ let button = slint::platform::PointerEventButton::Left;
+ let mut last_touch_down = false;
+ let mut last_position = Default::default();
+
+ loop {
+ slint::platform::update_timers_and_animations();
+ window.draw_if_needed(|renderer| {
+ renderer.render_by_line(nxrender.clone());
+ });
+
+ if let Ok(sample) = tsdev.read_sample() {
+ if sample.npoints > 0 {
+ let point = sample.point[0];
+ if point.is_pos_valid() {
+ let position =
slint::PhysicalPosition::new(point.x.into(), point.y.into())
+ .to_logical(window.scale_factor());
+ last_position = position;
+ if point.is_touch_down() || point.is_touch_move() {
+ last_touch_down = true;
+ window.dispatch_event(WindowEvent::PointerPressed {
position, button });
+ }
+ }
+ }
+ } else {
+ if last_touch_down {
+ window.dispatch_event(WindowEvent::PointerReleased {
+ position: last_position,
+ button,
+ });
+ last_touch_down = false;
+ }
+ }
+ }
+}
diff --git a/examples/rust/slint/ui/app.slint b/examples/rust/slint/ui/app.slint
new file mode 100644
index 000000000..29c14af06
--- /dev/null
+++ b/examples/rust/slint/ui/app.slint
@@ -0,0 +1,25 @@
+import { Button, VerticalBox, HorizontalBox , AboutSlint } from
"std-widgets.slint";
+
+export component AppWindow inherits Window {
+ property <int> counter: 0;
+
+ timer := Timer {
+ interval: 1s;
+ running: true;
+ triggered() => {
+ counter += 1;
+ }
+ }
+
+ VerticalBox {
+ Text {
+ horizontal-alignment: center;
+ vertical-alignment: center;
+ text: "Times since start on NuttX: \n\{root.counter}";
+ font-size: 24px;
+ }
+
+ AboutSlint { }
+
+ }
+}
