Merge pull request #175 from jdeseno/simple-messagebox

Add simple message box

src/sdl2/lib.rs

@@ -39,3 +39,4 @@ pub mod rwops;
 pub mod sdl;
 pub mod audio;
 pub mod version;
+pub mod messagebox;

src/sdl2/messagebox.rs

@@ -0,0 +1,41 @@
+use video::Window;
+use get_error;
+use SdlResult;
+
+#[allow(non_camel_case_types)]
+pub mod ll {
+    use libc::{c_int, c_char, uint32_t};
+    use video::ll::SDL_Window;
+
+    pub enum SDL_MessageBoxFlags {
+        SDL_MESSAGEBOX_ERROR        = 0x00000010,
+        SDL_MESSAGEBOX_WARNING      = 0x00000020,
+        SDL_MESSAGEBOX_INFORMATION  = 0x00000040
+    }
+
+    extern "C" {
+        pub fn SDL_ShowSimpleMessageBox(flags: uint32_t, title: *const c_char, message: *const c_char, window: *const SDL_Window) -> c_int;
+    }
+}
+
+bitflags!(flags MessageBoxFlag: u32 {
+    static MessageBoxError = ll::SDL_MESSAGEBOX_ERROR as u32,
+    static MessageBoxWarning = ll::SDL_MESSAGEBOX_WARNING as u32,
+    static MessageBoxInformation = ll::SDL_MESSAGEBOX_INFORMATION as u32
+})
+
+pub fn show_simple_message_box(flags: MessageBoxFlag, title: &str, message: &str, window: Window) -> SdlResult<()> {
+    let result = unsafe {
+        title.with_c_str(|title_cstr| {
+        message.with_c_str(|message_cstr| {
+            ll::SDL_ShowSimpleMessageBox(flags.bits(), title_cstr, message_cstr, window.raw())
+        })
+        })
+    } == 0;
+
+    if result {
+        Ok(())
+    } else {
+        Err(get_error())
+    }
+}