Bug 1232 - NEWT Translucent Decorated Windows Not Working On Windows >= 8 (Lack of Aero / Blur )

Adopting new undocumented user32.dll Windows >= 8 API:
  - SetWindowCompositionAttribute / AccentState

See:
  - <https://github.com/riverar/sample-win10-aeroglass/blob/master/MainWindow.xaml.cs>
  - <http://withinrafael.com/adding-the-aero-glass-blur-to-your-windows-10-apps/>
  - <http://undoc.airesoft.co.uk/user32.dll/SetWindowCompositionAttribute.php>
  - <http://undoc.airesoft.co.uk/user32.dll/GetWindowCompositionAttribute.php>

+++

Cleaning up WindowsDWM.h, use on header file (in stub_includes)
for GlueGen and implementation.

+++

Merge java implementation within GDIUtil.DwmSetupTranslucency(..),
to be utilized by NEWT and JOGL.

NEWT issues GDIUtil.DwmSetupTranslucency(..) at creation
and when toggling decoration.

Toggling decoration on Win >= 8 leads to lost of translucency
when returning to decorated window.
On Win 7, this may work .. but is also buggy.

+++

Followup patch is needed for NEWT to _not_ clear the background!

1 files changed, 85 insertions, 6 deletions

diff --git a/make/stub_includes/win32/WindowsDWM.h b/make/stub_includes/win32/WindowsDWM.h
index 2115a5908..247464afd 100644
--- a/make/stub_includes/win32/WindowsDWM.h
+++ b/make/stub_includes/win32/WindowsDWM.h
@@ -1,3 +1,6 @@
+#include <windows.h>
+#include <stdint.h>
+
 #ifndef WGL_DWM_VERSION_1_X
 
 #define DWM_BB_ENABLE                 0x00000001
@@ -6,19 +9,44 @@
 #define DWM_EC_DISABLECOMPOSITION     0
 #define DWM_EC_ENABLECOMPOSITION      1
 
+typedef enum _DWMWINDOWATTRIBUTE { 
+  DWMWA_NCRENDERING_ENABLED          = 1,
+  DWMWA_NCRENDERING_POLICY,
+  DWMWA_TRANSITIONS_FORCEDISABLED,
+  DWMWA_ALLOW_NCPAINT,
+  DWMWA_CAPTION_BUTTON_BOUNDS,
+  DWMWA_NONCLIENT_RTL_LAYOUT,
+  DWMWA_FORCE_ICONIC_REPRESENTATION,
+  DWMWA_FLIP3D_POLICY,
+  DWMWA_EXTENDED_FRAME_BOUNDS,
+  DWMWA_HAS_ICONIC_BITMAP,
+  DWMWA_DISALLOW_PEEK,
+  DWMWA_EXCLUDED_FROM_PEEK,
+  DWMWA_CLOAK,
+  DWMWA_CLOAKED,
+  DWMWA_FREEZE_REPRESENTATION,
+  DWMWA_LAST
+} DWMWINDOWATTRIBUTE;
+
+typedef enum _DWMNCRENDERINGPOLICY { 
+  DWMNCRP_USEWINDOWSTYLE = 0,
+  DWMNCRP_DISABLED,
+  DWMNCRP_ENABLED,
+  DWMNCRP_LAST
+} DWMNCRENDERINGPOLICY;
   
 typedef struct tagDWM_BLURBEHIND {  
     DWORD dwFlags;  
-    int fEnable; /* BOOL */
+    int32_t fEnable; /* BOOL */
     HRGN hRgnBlur;  
-    int fTransitionOnMaximized; /* BOOL */
+    int32_t fTransitionOnMaximized; /* BOOL */
 } DWM_BLURBEHIND, *PDWM_BLURBEHIND;
   
 typedef struct tagMARGINS {  
-    int cxLeftWidth;
-    int cxRightWidth;
-    int cyTopHeight;
-    int cyBottomHeight;
+    int32_t cxLeftWidth;
+    int32_t cxRightWidth;
+    int32_t cyTopHeight;
+    int32_t cyBottomHeight;
 } MARGINS, *PMARGINS;
   
 #endif /*  WGL_DWM_VERSION_1_X */
@@ -31,6 +59,57 @@ BOOL DwmIsCompositionEnabled();
 BOOL DwmEnableComposition( UINT uCompositionAction );
 BOOL DwmEnableBlurBehindWindow(HWND, CONST DWM_BLURBEHIND *);
 BOOL DwmExtendFrameIntoClientArea(HWND, CONST MARGINS *);
+HRESULT DwmGetWindowAttribute(HWND hwnd, DWORD dwAttribute, PVOID pvAttribute, DWORD cbAttribute);
+HRESULT DwmSetWindowAttribute(HWND hwnd, DWORD dwAttribute, LPCVOID pvAttribute, DWORD cbAttribute);
   
 #endif /*  WGL_DWM_VERSION_1_X */
 
+#ifndef WGL_WINCOMP_VERSION_0_X
+
+typedef enum _AccentState {
+    ACCENT_DISABLED = 0,
+    ACCENT_ENABLE_GRADIENT = 1,
+    ACCENT_ENABLE_TRANSPARENTGRADIENT = 2,
+    ACCENT_ENABLE_BLURBEHIND = 3,
+    ACCENT_INVALID_STATE = 4
+} AccentState;
+
+typedef struct _AccentPolicy {
+    AccentState AccentState;
+    int32_t AccentFlags;
+    int32_t GradientColor;
+    int32_t AnimationId;
+} AccentPolicy;
+
+
+#ifndef __GLUEGEN__
+
+typedef enum _WindowCompositionAttribute {
+    WCA_ACCENT_POLICY = 19
+} WindowCompositionAttribute;
+
+typedef struct _WINCOMPATTRDATA {
+    /** The attribute to query */
+    WindowCompositionAttribute attribute;
+    /** result storage */
+    PVOID pData;
+    /** size of the result storage */
+    ULONG dataSize;
+} WINCOMPATTRDATA;
+
+#endif
+
+#endif /*  WGL_WINCOMP_VERSION_0_X */
+
+#ifndef WGL_WINCOMP_VERSION_0_X
+#define WGL_WINCOMP_VERSION_0_X
+
+BOOL IsWindowCompositionExtensionAvailable();
+BOOL GetWindowCompositionAccentPolicy(HWND hwnd, AccentPolicy* pAccentPolicy);
+BOOL SetWindowCompositionAccentPolicy(HWND hwnd, const AccentPolicy* pAccentPolicy);
+#if 0
+    BOOL GetWindowCompositionAttribute(HWND hwnd, WINCOMPATTRDATA* pAttrData);
+    BOOL SetWindowCompositionAttribute(HWND hwnd, WINCOMPATTRDATA* pAttrData);
+#endif
+
+#endif /*  WGL_WINCOMP_VERSION_0_X */