Implement fullscreen for win32

2 files changed, 138 insertions, 6 deletions

diff --git a/src/win32/ffi.rs b/src/win32/ffi.rs
index 8ff7c43..4a3ce7e 100644
--- a/src/win32/ffi.rs
+++ b/src/win32/ffi.rs
@@ -96,6 +96,17 @@ pub static BS_USERBUTTON: DWORD = 8;
 pub static BS_VCENTER: DWORD =  0xc00;
 pub static BS_FLAT: DWORD = 0x8000;
 
+// ?
+pub static CDS_UPDATEREGISTRY: DWORD = 0x1;
+pub static CDS_TEST: DWORD = 0x2;
+pub static CDS_FULLSCREEN: DWORD = 0x4;
+pub static CDS_GLOBAL: DWORD = 0x8;
+pub static CDS_SET_PRIMARY: DWORD = 0x10;
+pub static CDS_VIDEOPARAMETERS: DWORD = 0x20;
+pub static CDS_NORESET: DWORD = 0x10000000;
+pub static CDS_SETRECT: DWORD = 0x20000000;
+pub static CDS_RESET: DWORD = 0x40000000;
+
 // http://msdn.microsoft.com/en-us/library/windows/desktop/ff729176(v=vs.85).aspx
 pub static CS_BYTEALIGNCLIENT: DWORD = 0x1000;
 pub static CS_BYTEALIGNWINDOW: DWORD = 0x2000;
@@ -114,6 +125,48 @@ pub static CS_VREDRAW: DWORD = 0x0001;
 #[allow(type_overflow)]
 pub static CW_USEDEFAULT: libc::c_int = 0x80000000;
 
+// ?
+pub static DISP_CHANGE_SUCCESSFUL: LONG = 0;
+pub static DISP_CHANGE_RESTART: LONG = 1;
+pub static DISP_CHANGE_FAILED: LONG = -1;
+pub static DISP_CHANGE_BADMODE: LONG = -2;
+pub static DISP_CHANGE_NOTUPDATED: LONG = -3;
+pub static DISP_CHANGE_BADFLAGS: LONG = -4;
+pub static DISP_CHANGE_BADPARAM: LONG = -5;
+pub static DISP_CHANGE_BADDUALVIEW: LONG = -6;
+
+// ?
+pub static DM_ORIENTATION: DWORD = 0x00000001;
+pub static DM_PAPERSIZE: DWORD = 0x00000002;
+pub static DM_PAPERLENGTH: DWORD = 0x00000004;
+pub static DM_PAPERWIDTH: DWORD = 0x00000008;
+pub static DM_SCALE: DWORD = 0x00000010;
+pub static DM_POSITION: DWORD = 0x00000020;
+pub static DM_NUP: DWORD = 0x00000040;
+pub static DM_DISPLAYORIENTATION: DWORD = 0x00000080;
+pub static DM_COPIES: DWORD = 0x00000100;
+pub static DM_DEFAULTSOURCE: DWORD = 0x00000200;
+pub static DM_PRINTQUALITY: DWORD = 0x00000400;
+pub static DM_COLOR: DWORD = 0x00000800;
+pub static DM_DUPLEX: DWORD = 0x00001000;
+pub static DM_YRESOLUTION: DWORD = 0x00002000;
+pub static DM_TTOPTION: DWORD = 0x00004000;
+pub static DM_COLLATE: DWORD = 0x00008000;
+pub static DM_FORMNAME: DWORD = 0x00010000;
+pub static DM_LOGPIXELS: DWORD = 0x00020000;
+pub static DM_BITSPERPEL: DWORD = 0x00040000;
+pub static DM_PELSWIDTH: DWORD = 0x00080000;
+pub static DM_PELSHEIGHT: DWORD = 0x00100000;
+pub static DM_DISPLAYFLAGS: DWORD = 0x00200000;
+pub static DM_DISPLAYFREQUENCY: DWORD = 0x00400000;
+pub static DM_ICMMETHOD: DWORD = 0x00800000;
+pub static DM_ICMINTENT: DWORD = 0x01000000;
+pub static DM_MEDIATYPE: DWORD = 0x02000000;
+pub static DM_DITHERTYPE: DWORD = 0x04000000;
+pub static DM_PANNINGWIDTH: DWORD = 0x08000000;
+pub static DM_PANNINGHEIGHT: DWORD = 0x10000000;
+pub static DM_DISPLAYFIXEDOUTPUT: DWORD = 0x20000000;
+
 // http://msdn.microsoft.com/en-us/library/windows/desktop/ms679351(v=vs.85).aspx
 pub static FORMAT_MESSAGE_ALLOCATE_BUFFER: DWORD = 0x00000100;
 pub static FORMAT_MESSAGE_ARGUMENT_ARRAY: DWORD = 0x00002000;
@@ -467,6 +520,38 @@ pub struct PIXELFORMATDESCRIPTOR {
     pub dwDamageMask: DWORD,
 }
 
+// http://msdn.microsoft.com/en-us/library/windows/desktop/dd183565(v=vs.85).aspx
+#[repr(C)]
+pub struct DEVMODE {
+    pub dmDeviceName: [WCHAR, ..32],
+    pub dmSpecVersion: WORD,
+    pub dmDriverVersion: WORD,
+    pub dmSize: WORD,
+    pub dmDriverExtra: WORD,
+    pub dmFields: DWORD,
+    union1: [u8, ..16],
+    pub dmColor: libc::c_short,
+    pub dmDuplex: libc::c_short,
+    pub dmYResolution: libc::c_short,
+    pub dmTTOption: libc::c_short,
+    pub dmCollate: libc::c_short,
+    pub dmFormName: [WCHAR, ..32],
+    pub dmLogPixels: WORD,
+    pub dmBitsPerPel: DWORD,
+    pub dmPelsWidth: DWORD,
+    pub dmPelsHeight: DWORD,
+    pub dmDisplayFlags: DWORD,
+    pub dmDisplayFrequency: DWORD,
+    pub dmICMMethod: DWORD,
+    pub dmICMIntent: DWORD,
+    pub dmMediaType: DWORD,
+    pub dmDitherType: DWORD,
+    dmReserved1: DWORD,
+    dmReserved2: DWORD,
+    pub dmPanningWidth: DWORD,
+    pub dmPanningHeight: DWORD,
+}
+
 pub type LPMSG = *mut MSG;
 
 #[link(name = "advapi32")]
@@ -484,9 +569,16 @@ pub type LPMSG = *mut MSG;
 #[link(name = "uuid")]
 #[link(name = "winspool")]
 extern "system" {
+    // http://msdn.microsoft.com/en-us/library/windows/desktop/ms632667(v=vs.85).aspx
+    pub fn AdjustWindowRectEx(lpRect: *mut RECT, dwStyle: DWORD, bMenu: BOOL,
+        dwExStyle: DWORD) -> BOOL;
+
     // http://msdn.microsoft.com/en-us/library/windows/desktop/dd183362(v=vs.85).aspx
     pub fn BeginPaint(hwnd: HWND, lpPaint: *mut PAINTSTRUCT) -> HDC;
 
+    // http://msdn.microsoft.com/en-us/library/windows/desktop/dd183411(v=vs.85).aspx
+    pub fn ChangeDisplaySettingsW(lpDevMode: *mut DEVMODE, dwFlags: DWORD) -> LONG;
+
     // http://msdn.microsoft.com/en-us/library/windows/desktop/ms632680(v=vs.85).aspx
     pub fn CreateWindowExW(dwExStyle: DWORD, lpClassName: LPCWSTR, lpWindowName: LPCWSTR,
         dwStyle: DWORD, x: libc::c_int, y: libc::c_int, nWidth: libc::c_int, nHeight: libc::c_int,
@@ -542,6 +634,9 @@ extern "system" {
     // http://msdn.microsoft.com/en-us/library/windows/desktop/ms633586(v=vs.85).aspx
     pub fn RegisterClassExW(lpWndClass: *const WNDCLASSEX) -> ATOM;
 
+    // http://msdn.microsoft.com/en-us/library/windows/desktop/ms633539(v=vs.85).aspx
+    pub fn SetForegroundWindow(hWnd: HWND) -> BOOL;
+
     // http://msdn.microsoft.com/en-us/library/windows/desktop/dd369049(v=vs.85).aspx
     pub fn SetPixelFormat(hdc: HDC, iPixelFormat: libc::c_int,
         ppfd: *const PIXELFORMATDESCRIPTOR) -> BOOL;
diff --git a/src/win32/mod.rs b/src/win32/mod.rs
index 03c262f..7230ee4 100644
--- a/src/win32/mod.rs
+++ b/src/win32/mod.rs
@@ -23,7 +23,7 @@ local_data_key!(pub WINDOWS_LIST: Mutex<Vec<(ffi::HWND, Sender<Event>)>>)
 
 impl Window {
     pub fn new(dimensions: Option<(uint, uint)>, title: &str,
-        _hints: &Hints, _monitor: Option<MonitorID>)
+        _hints: &Hints, monitor: Option<MonitorID>)
         -> Result<Window, String>
     {
         use std::mem;
@@ -60,16 +60,48 @@ impl Window {
                 os::error_string(os::errno() as uint)))
         }
 
+        // building a RECT object with coordinates
+        let mut rect = ffi::RECT {
+            left: 0, right: dimensions.map(|(w, _)| w as ffi::LONG).unwrap_or(1024),
+            top: 0, bottom: dimensions.map(|(_, h)| h as ffi::LONG).unwrap_or(768),
+        };
+
+        // switching to fullscreen
+        if monitor.is_some() {
+            let mut screen_settings: ffi::DEVMODE = unsafe { mem::zeroed() };
+            screen_settings.dmSize = mem::size_of::<ffi::DEVMODE>() as ffi::WORD;
+            screen_settings.dmPelsWidth = 1024;
+            screen_settings.dmPelsHeight = 768;
+            screen_settings.dmBitsPerPel = 32;
+            screen_settings.dmFields = ffi::DM_BITSPERPEL | ffi::DM_PELSWIDTH | ffi::DM_PELSHEIGHT;
+
+            let result = unsafe { ffi::ChangeDisplaySettingsW(&mut screen_settings, ffi::CDS_FULLSCREEN) };
+            if result != ffi::DISP_CHANGE_SUCCESSFUL {
+                return Err(format!("ChangeDisplaySettings failed: {}", result))
+            }
+        }
+
+        // computing the style and extended style
+        let (ex_style, style) = if monitor.is_some() {
+            (ffi::WS_EX_APPWINDOW, ffi::WS_POPUP | ffi::WS_CLIPSIBLINGS | ffi::WS_CLIPCHILDREN)
+        } else {
+            (ffi::WS_EX_APPWINDOW | ffi::WS_EX_WINDOWEDGE,
+                ffi::WS_OVERLAPPEDWINDOW | ffi::WS_CLIPSIBLINGS | ffi::WS_CLIPCHILDREN)
+        };
+
+        // adjusting
+        unsafe { ffi::AdjustWindowRectEx(&mut rect, style, 0, ex_style) };
+
         // creating the window
         let handle = unsafe {
             use libc;
 
-            let handle = ffi::CreateWindowExW(0, class_name.as_ptr(),
+            let handle = ffi::CreateWindowExW(ex_style, class_name.as_ptr(),
                 title.utf16_units().collect::<Vec<u16>>().append_one(0).as_ptr() as ffi::LPCWSTR,
-                ffi::WS_OVERLAPPEDWINDOW | ffi::WS_VISIBLE,
-                dimensions.map(|(x, _)| x as libc::c_int).unwrap_or(ffi::CW_USEDEFAULT),
-                dimensions.map(|(_, y)| y as libc::c_int).unwrap_or(ffi::CW_USEDEFAULT),
-                ffi::CW_USEDEFAULT, ffi::CW_USEDEFAULT,
+                style | ffi::WS_VISIBLE | ffi::WS_CLIPSIBLINGS | ffi::WS_CLIPCHILDREN,
+                if monitor.is_some() { 0 } else { ffi::CW_USEDEFAULT},
+                if monitor.is_some() { 0 } else { ffi::CW_USEDEFAULT},
+                rect.right - rect.left, rect.bottom - rect.top,
                 ptr::mut_null(), ptr::mut_null(), ffi::GetModuleHandleW(ptr::null()),
                 ptr::mut_null());
 
@@ -82,6 +114,11 @@ impl Window {
             handle
         };
 
+        // calling SetForegroundWindow if fullscreen
+        if monitor.is_some() {
+            unsafe { ffi::SetForegroundWindow(handle) };
+        }
+
         // adding it to WINDOWS_LIST
         let events_receiver = {
             let (tx, rx) = channel();