From 81314f91d82dff07f6da3409dd1280a68d4dcd60 Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Fri, 15 May 2015 15:19:33 +0200
Subject: Add API for transparency and decorations and add support for win32

---
 src/api/win32/callback.rs |  1 +
 src/api/win32/init.rs     | 23 ++++++++++++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

(limited to 'src/api')

diff --git a/src/api/win32/callback.rs b/src/api/win32/callback.rs
index 1ea95a5..86d5f1c 100644
--- a/src/api/win32/callback.rs
+++ b/src/api/win32/callback.rs
@@ -44,6 +44,7 @@ fn send_event(input_window: winapi::HWND, event: Event) {
 /// This is the callback that is called by `DispatchMessage` in the events loop.
 /// 
 /// Returning 0 tells the Win32 API that the message has been processed.
+// FIXME: detect WM_DWMCOMPOSITIONCHANGED and call DwmEnableBlurBehindWindow if necessary
 pub unsafe extern "system" fn callback(window: winapi::HWND, msg: winapi::UINT,
                                        wparam: winapi::WPARAM, lparam: winapi::LPARAM)
                                        -> winapi::LRESULT
diff --git a/src/api/win32/init.rs b/src/api/win32/init.rs
index fb4e181..1252354 100644
--- a/src/api/win32/init.rs
+++ b/src/api/win32/init.rs
@@ -102,7 +102,7 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
     }
 
     // computing the style and extended style of the window
-    let (ex_style, style) = if builder.monitor.is_some() {
+    let (ex_style, style) = if builder.monitor.is_some() || builder.decorations == false {
         (winapi::WS_EX_APPWINDOW, winapi::WS_POPUP | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN)
     } else {
         (winapi::WS_EX_APPWINDOW | winapi::WS_EX_WINDOWEDGE,
@@ -214,6 +214,27 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
         }
     };
 
+    // making the window transparent
+    if builder.transparent {
+        let bb = winapi::DWM_BLURBEHIND {
+            dwFlags: 0x1, // FIXME: DWM_BB_ENABLE;
+            fEnable: 1,
+            hRgnBlur: ptr::null_mut(),
+            fTransitionOnMaximized: 0,
+        };
+
+        let dll = kernel32::LoadLibraryA(b"dwmapi.dll\0".as_ptr() as *const _);
+        if !dll.is_null() {
+            let pr = kernel32::GetProcAddress(dll, b"DwmEnableBlurBehindWindow\0".as_ptr() as *const _);
+            if !pr.is_null() {
+                let pr: unsafe extern "system" fn(winapi::HWND, *const winapi::DWM_BLURBEHIND)
+                        -> winapi::HRESULT = mem::transmute(pr);
+                pr(real_window.0, &bb);
+            }
+            kernel32::FreeLibrary(dll);
+        }
+    }
+
     // calling SetForegroundWindow if fullscreen
     if builder.monitor.is_some() {
         user32::SetForegroundWindow(real_window.0);
-- 
cgit v1.2.3


From 9117bcf3d3f441c86c85b04ce54e135d28fcb2e1 Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Wed, 20 May 2015 18:46:10 +0200
Subject: Switch to dwmapi

---
 Cargo.toml            |  6 ++++--
 src/api/win32/init.rs | 12 +++---------
 src/lib.rs            |  2 ++
 3 files changed, 9 insertions(+), 11 deletions(-)

(limited to 'src/api')

diff --git a/Cargo.toml b/Cargo.toml
index 4f73636..4bcbac5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,16 +37,18 @@ glutin_core_graphics = "0"
 glutin_core_foundation = "0"
 
 [target.i686-pc-windows-gnu.dependencies]
-winapi = "0.1"
+winapi = "~0.1.18"
 gdi32-sys = "0.1"
 user32-sys = "~0.1.1"
 kernel32-sys = "0.1"
+dwmapi-sys = "0.1"
 
 [target.x86_64-pc-windows-gnu.dependencies]
-winapi = "0.1"
+winapi = "~0.1.18"
 gdi32-sys = "0.1"
 user32-sys = "~0.1.1"
 kernel32-sys = "0.1"
+dwmapi-sys = "0.1"
 
 [target.i686-unknown-linux-gnu.dependencies]
 osmesa-sys = "0.0.5"
diff --git a/src/api/win32/init.rs b/src/api/win32/init.rs
index 1252354..f46c395 100644
--- a/src/api/win32/init.rs
+++ b/src/api/win32/init.rs
@@ -25,6 +25,7 @@ use std::sync::mpsc::channel;
 
 use winapi;
 use kernel32;
+use dwmapi;
 use user32;
 
 use api::wgl;
@@ -223,15 +224,8 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
             fTransitionOnMaximized: 0,
         };
 
-        let dll = kernel32::LoadLibraryA(b"dwmapi.dll\0".as_ptr() as *const _);
-        if !dll.is_null() {
-            let pr = kernel32::GetProcAddress(dll, b"DwmEnableBlurBehindWindow\0".as_ptr() as *const _);
-            if !pr.is_null() {
-                let pr: unsafe extern "system" fn(winapi::HWND, *const winapi::DWM_BLURBEHIND)
-                        -> winapi::HRESULT = mem::transmute(pr);
-                pr(real_window.0, &bb);
-            }
-            kernel32::FreeLibrary(dll);
+        unsafe {
+            dwmapi::DwmEnableBlurBehindWindow(real_window.0, &bb);
         }
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index d2aaf46..612206e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -40,6 +40,8 @@ extern crate kernel32;
 extern crate gdi32;
 #[cfg(target_os = "windows")]
 extern crate user32;
+#[cfg(target_os = "windows")]
+extern crate dwmapi;
 #[cfg(target_os = "macos")]
 #[macro_use]
 extern crate objc;
-- 
cgit v1.2.3