From 87db9987c8ec762c567e6e11856026b77f9981fd Mon Sep 17 00:00:00 2001
From: Martin Lindhe <martin-commit@ubique.se>
Date: Thu, 21 Dec 2017 13:34:36 +0100
Subject: [PATCH] add an example using a custom mouse cursor

example: cargo run --example cursor --features="image gfx" assets/cursor.png
---
 Cargo.toml         |   4 +++
 assets/cursor.png  | Bin 0 -> 172 bytes
 examples/cursor.rs |  67 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 71 insertions(+)
 create mode 100644 assets/cursor.png
 create mode 100644 examples/cursor.rs

diff --git a/Cargo.toml b/Cargo.toml
index ae54c457832..26c31d9e712 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -66,6 +66,10 @@ name = "audio-wav"
 [[example]]
 name = "audio-whitenoise"
 
+[[example]]
+required-features = ["image", "gfx"]
+name = "cursor"
+
 [[example]]
 name = "demo"
 
diff --git a/assets/cursor.png b/assets/cursor.png
new file mode 100644
index 0000000000000000000000000000000000000000..2118eb86ea319ded5001c60636e466e8654ccfcf
GIT binary patch
literal 172
zcmeAS@N?(olHy`uVBq!ia0vp^3LwnF3?v&v(vJfvp#Yx{R|ZA~$Cx^XNp~2kcIu_{
znkKYKy!Olm$}*M&`2{mLJiCzw<al_xIEHAPe|o`CkU@dR`J&f?LI-|U7tViY4ZbTk
z_Utq_>6N*-_+(P^iOH-TJW9<c6pX;s?p0A6{nD&$E&HMw9{oIif9I|ZoM|^yroI50
O$>8bg=d#Wzp$P!VRycqF

literal 0
HcmV?d00001

diff --git a/examples/cursor.rs b/examples/cursor.rs
new file mode 100644
index 00000000000..60656038ea4
--- /dev/null
+++ b/examples/cursor.rs
@@ -0,0 +1,67 @@
+extern crate sdl2;
+
+use std::env;
+use std::path::Path;
+use sdl2::event::Event;
+use sdl2::image::{LoadSurface, INIT_PNG, INIT_JPG};
+use sdl2::keyboard::Keycode;
+use sdl2::mouse::Cursor;
+use sdl2::pixels::Color;
+use sdl2::gfx::primitives::DrawRenderer;
+use sdl2::surface::Surface;
+
+pub fn run(png: &Path) {
+
+    let sdl_context = sdl2::init().unwrap();
+    let video_subsystem = sdl_context.video().unwrap();
+    let _image_context = sdl2::image::init(INIT_PNG | INIT_JPG).unwrap();
+    let window = video_subsystem.window("rust-sdl2 demo: Cursor", 800, 600)
+      .position_centered()
+      .build()
+      .unwrap();
+
+    let mut canvas = window.into_canvas().software().build().unwrap();
+
+    let surface = match Surface::from_file(png) {
+        Ok(surface) => surface,
+        Err(err)    => panic!("failed to load cursor image: {}", err)
+    };
+    let cursor = match Cursor::from_surface(surface, 0, 0) {
+        Ok(cursor) => cursor,
+        Err(err) => panic!("failed to load cursor: {}", err)
+    };
+    cursor.set();
+
+    canvas.clear();
+    canvas.present();
+
+    let mut events = sdl_context.event_pump().unwrap();
+
+    'mainloop: loop {
+        for event in events.poll_iter() {
+            match event {
+                Event::Quit{..} |
+                Event::KeyDown {keycode: Option::Some(Keycode::Escape), ..} =>
+                    break 'mainloop,
+                 Event::MouseButtonDown {x, y, ..} => {
+                    let color = Color::RGB(255, 255, 255);
+                    canvas.pixel(x as i16, y as i16, color).unwrap();
+                    canvas.present();
+                }
+                _ => {}
+            }
+        }
+    }
+}
+
+
+fn main() {
+
+    let args: Vec<_> = env::args().collect();
+
+    if args.len() < 2 {
+        println!("Usage: cargo run /path/to/image.(png|jpg)")
+    } else {
+        run(Path::new(&args[1]));
+    }
+}